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    Wyświetlanie 1-48 z 48
    Tytuł:
    Subjective risk estimation of the rare event
    Autorzy:
    Nguyen, Hoang
    Powiązania:
    https://bibliotekanauki.pl/articles/241939.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    rare event
    subjective risk estimation
    intuitionistic fuzzy set
    ship propulsion risk
    Opis:
    In the safety engineering, the most frequently disadvantage in risk estimation is the lack of data. In such cases, we have to rely on subjective estimations made by persons with practical knowledge in the field of interest, i.e. experts. However, in some realistic situations, they may have uncertainty in the perceiving and evaluation of the problem considered or limited knowledge of the rare events, such as the consequences of the seagoing ship propulsion failures. The probabilistic models of the risk estimation turn out to be insufficient in modelling the subjective uncertainty. The fuzzy methods are viewed to be powerful in dealing with ambiguity and uncertainty that can be used to handle with the subjective estimation. This article addresses the intuitionistic fuzzy method in the subjective estimation of the ship propulsion failure consequences as rare event risk. In the article, a subjective model of the ship propulsion risk is developed as scenarios of the different subsequent consequences of loss of ship propulsion function until a seriously severe accident resulting in loss of seaworthiness. The model proposes an approach combining AHP method and intuitionistic fuzzy method to assess the occurrence probability and severe probability of these rare events based on the expert opinions. In order to show the applicability of the proposed model, a study case of the propulsion risk of the container carrier operating on the North Atlantic lines is conducted.
    Źródło:
    Journal of KONES; 2019, 26, 1; 103-110
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Machine Learning Algorithms for Data Enrichment: A Promising Solution for Enhancing Accuracy in Predicting Blast-Induced Ground Vibration in Open-Pit Mines
    Autorzy:
    Nguyen, Hoang
    Bui, Xuan-Nam
    Drebenstedt, Carsten
    Powiązania:
    https://bibliotekanauki.pl/articles/25212182.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    blast-induced ground vibration
    data enrichment
    sustainable and responsible mining
    machine learning
    open-pit mining
    performance improvement
    górnictwo odkrywkowe
    sztuczna inteligencja
    maszyny
    Opis:
    The issue of blast-induced ground vibration poses a significant environmental challenge in open-pit mines, necessitating precise prediction and control measures. While artificial intelligence and machine learning models hold promise in addressing this concern, their accuracy remains a notable issue due to constrained input variables, dataset size, and potential environmental impact. To mitigate these challenges, data enrichment emerges as a potential solution to enhance the efficacy of machine learning models, not only in blast-induced ground vibration prediction but also across various domains within the mining industry. This study explores the viability of utilizing machine learning for data enrichment, with the objective of generating an augmented dataset that offers enhanced insights based on existing data points for the prediction of blast-induced ground vibration. Leveraging the support vector machine (SVM), we uncover intrinsic relationships among input variables and subsequently integrate them as supplementary inputs. The enriched dataset is then harnessed to construct multiple machine learning models, including k-nearest neighbors (KNN), classification and regression trees (CART), and random forest (RF), all designed to predict blast-induced ground vibration. Comparative analysis between the enriched models and their original counterparts, established on the initial dataset, provides a foundation for extracting insights into optimizing the performance of machine learning models not only in the context of predicting blast-induced ground vibration but also in addressing broader challenges within the mining industry.
    Źródło:
    Inżynieria Mineralna; 2023, 2; 79--88
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Artificial Neural Network Optimized by Modified Particle Swarm Optimization for Predicting Peak Particle Velocity Induced by Blasting Operations in Open Pit Mines
    Autorzy:
    Bui, Xuan‑Nam
    Nguyen, Hoang
    Nguyen, Truc Anh
    Powiązania:
    https://bibliotekanauki.pl/articles/2020892.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    blast-induced ground vibration
    peak particle velocity
    open pit mine
    artificial neural network
    modified particle swarm optimization
    metaheuristic algorithms
    wibracje gruntu wywołane podmuchami
    drgania górotworu
    górnictwo odkrywkowe
    sztuczne sieci neuronowe
    Opis:
    Blasting is an indispensable part of the open pit mining operations. It plays a vital role in preparing the rock mass for subsequent operations, such as loading/unloading, transporting, crushing, and dumping. However, adverse effects, especially blast-induced ground vibrations, are considered one of the most dangerous problems. In this study, artificial intelligence was supposed to predict the intensity of blast-induced ground vibration, which is represented by the peak particle velocity (PPV). Accordingly, an artificial neural network was designed to predict PPV at the Coc Sau open pit coal mine with 137 blasting events were collected. Aiming to optimize the ANN model, the modified version of the particle swarm optimization (MPSO) algorithm was applied to optimize the ANN model for predicting PPV, called the MPSO-ANN model. For the comparison purposes, two forms of empirical equations, namely United States Bureau of Mining (USBM) and U Langefors - Kihlstrom, were also developed to predict PPV and compared with the proposed MPSO-ANN model. The results showed that the proposed MPSO-ANN model provided a better performance with a mean absolute error (MAE) of 1.217, root-mean-squared error (RMSE) of 1.456, and coefficient of determination (R2) of 0.956. Meanwhile, the empirical models only provided poorer performances with an MAE of 1.830 and 2.012, RMSE of 2.268 and 2.464, and R2 of 0.874 and 0.852 for the USBM and U Langefors – Kihlstrom empirical models, respectively.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 79--90
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Triggering students’ learning autonomy using the combination of m-learning and gamification: a case study at Nguyen Tat Thanh University
    Autorzy:
    Le Nhat Pham, Linh
    Tan Nguyen, Hoang
    Thi Kieu Le, Van
    Powiązania:
    https://bibliotekanauki.pl/articles/2085224.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
    Tematy:
    gamification
    m-learning
    learner autonomy
    language teaching
    Opis:
    M-learning is usually thought of as based on videos, digital materials, and high technology. Nonetheless, it is not a complete perspective of this new educational trend. Mobile devices with many functions can be an effective tool to support learning. Furthermore, learners nowadays, who were born in the 4.0 movement, are more familiar with mobile devices than notebooks. They spend much time on their mobile phones interacting on social media and playing mobile games. Hence, if educators can integrate those interests into traditional lesson plans, added value would appear for learners’ academic performance and learner autonomy. This paper proposes the idea of combining m-learning, gamification, and other factors influencing learning motivation into a mobile application to reinforce students’ learner autonomy. With a case study at Nguyen Tat Thanh University, we take a closer look at the effectiveness of the application on students’ language acquisition and a detailed description of how to best use the application along with lessons at schools. Using experimental methods with surveys and tests, this paper draws a bonding connection between students’ personal interest in the subject and their performance. The study provides thoughtful insights into utilizing m-learning and gamification to improve students’ learner autonomy and modernize language learning classrooms in this technological context.
    Źródło:
    Teaching English with Technology; 2021, 21, 2; 66-91
    1642-1027
    Pojawia się w:
    Teaching English with Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nature-based tourism motivations and visit profiles of domestic and international segments to a Japanese national park
    Autorzy:
    Jones, Thomas E.
    Nguyen, Minh-Hoang
    Powiązania:
    https://bibliotekanauki.pl/articles/2054595.pdf
    Data publikacji:
    2021-06-30
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    motivation
    monitoring
    nature-based tourism
    international segments
    national park
    Opis:
    The rapid post-millennial internationalisation of Japan’s tourism sector and the influx of international visitors have quickly increased visitor motivations’ heterogeneity, thereby posing challenges for management. Given the lack of prior research, we aimed to identify nature-based tourism (NBT) push-factor motivation domains of visitors in a Japanese national park and segment domestic and international visitors based on their motivations, demographics and trip profiles. Primary data collection of 137 responses took place in November 2019 through an on-site self-administered questionnaire. From 11 push-factor statements, the principal component analysis yielded a four-factor solution: ‘enjoying nature with family or friends’, ‘improving physical health’, ‘discovering and learning’ and ‘escaping’. In addition, t-tests revealed significant differences between domestic and international visitors in three out of the four motivation dimensions. Underlying visitor profiles could explain some such differences. Despite the differences, both international and domestic visitors share similar motivations regarding ‘improving physical health’. These findings hint at the complexity of monitoring heterogeneous visitor segments within Japanese NBT. Despite increasing international visitors, there has been a lack of the necessary infrastructure and facilities to accommodate them. Thus, this study’s implications might help diversify NBT management strategies to deal with current shortcomings in Japan’s tourism sector.
    Źródło:
    Quaestiones Geographicae; 2021, 40, 2; 77-92
    0137-477X
    2081-6383
    Pojawia się w:
    Quaestiones Geographicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of green logistics in the construction of sustainable supply chains
    Autorzy:
    Pham, Nguyen Dang Khoa
    Dinh, Gia Huy
    Pham, Hoang Thai
    Kozak, Janusz
    Nguyen, Hoang Phuong
    Powiązania:
    https://bibliotekanauki.pl/articles/34606725.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    green logistics
    supply chain
    environmental pollution
    sustainable development
    Opis:
    The global supply chain has been growing strongly in recent years. This development brings many benefits to the economy, society, and human resources in each country but also causes a large number of concerns related to the environment since traditional logistics activities in the supply chain have been releasing a significant amount of emissions. For that reason, many solutions have been proposed to deal with these environmental pollution problems. Among these, three promising solutions are expected to completely solve environmental problems in every supply chain: (I) Application of blockchain in the supply chain, (II) Use of renewable energy and alternative fuels, and (III) Design of a closed supply chain. However, it seems to lack a comprehensive study of these solutions aiming to overcome the drawbacks of traditional logistics. Indeed, this work focuses on analyzing and evaluating the three above-mentioned solutions and the impacts of each solution on solving problems related to traditional logistics. More importantly, this work also identifies critical factors and challenges such as policies, laws, awareness, and risks that are found to be remarkable difficulties in the shifting progress of traditional logistics to green logistics. Finally, directions for developing and deploying green solutions to the logistics, supply chain, and shipping sectors toward decarbonization strategies and net-zero goals are discussed in detail.
    Źródło:
    Polish Maritime Research; 2023, 3; 191-211
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strategies for developing logistics centres: technological trends and policy implications
    Autorzy:
    Nguyen, Minh Duc
    Ko, Tae Yeon
    Rudzki, Krzysztof
    Nguyen, Hoang Phuong
    Pham, Nguyen Dang Khoa
    Powiązania:
    https://bibliotekanauki.pl/articles/34601208.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    logistics centers
    logistics infrastructure
    logistical services
    smart technologies
    Opis:
    Logistics centres are currently performing a key function in the development of countries through their ability to regulate goods, markets, and transport. This is shown by the infrastructure, cost, goods flow, and quality of logistical services provided by these centres. Nevertheless, in developing nations or regions with antiquated logistics infrastructure, conventional logistics centres seem to struggle to manage the volume of commodities passing through them, resulting in persistent congestion and an unsteady flow of goods inside these facilities. This issue poses a challenge to the progress of any nation. The emergence of new technology offers a potential avenue to solve the problems inherent in traditional logistics centres. Most prominently, four technologies (the Internet of Things (IoT), Blockchain, Big Data and Cloud computing) are widely applied in traditional logistics centres. This work has conducted a thorough analysis and evaluation of these new technologies in relation to their respective functions and roles inside a logistics centre. Furthermore, this work proposes difficulties in applying new technologies to logistics centres related to issues such as science, energy, cost, or staff qualifications. Finally, future development directions, related to expanding policies in technological applications, or combining each country’s policies for the logistics industry, are carefully discussed.
    Źródło:
    Polish Maritime Research; 2023, 4; 129-147
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on Suitable Mining Technology for Placer Titanium Mines in Vietnam
    Dobór odpowiedniej technologii eksploatacji okruchowego tytanu w Wietnamie
    Autorzy:
    Le, Qui Thao
    Nguyen, Hoang
    Nguyen, Nga
    Vu, Dinh Hieu
    Le, Hoa Thu-Thi
    Nguyen, Anh Thuc-Thi
    Bui, Xuan‑Nam
    Powiązania:
    https://bibliotekanauki.pl/articles/318901.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    mining technology
    placer titanium
    sustainable development
    Vietnam
    technologia górnicza
    złoże okruchowego tytanu
    zrównoważony rozwój
    Wietnam
    Opis:
    Vietnam has a potential reserve of placer titanium of around 650 Mt. The reserve lays in sandy beaches of the country from Thanh Hoa to Binh Thuan province. Placer titanium mines in Vietnam are different in geological condition, the scale of production, mining method, and environmental protection solutions, etc. Some of them are operating with inappropriate mining technology; therefore, have caused environmental issues and ineffective operation. Consequently, it is essential to have criteria for selecting appropriate mining technology to approach the sustainable development for the mines. Based on categories of geology, the scale of production, mining characteristics, requirements of safety, land reclamation and environmental protection, and mining effect, authors defined the criteria and method for selecting adequate mining technology for the placer titanium mines in Vietnam which aim for better safe, effective and sustainable. The categories to select the appropriate technology for coastal titanium placers in Vietnam including 1- feasible mining scheme, 2- mining procedure, 3- requirement volume of water, 4- slope stability, 5- environmental rehabilitation and reclamation, and 6- economic effect. The result of the application for Nam Suoi Nhum placer titanium mine in Bình Thuan province shows that the most appropriate scheme of this mine is the mining technology of using hydraulic jets, pumping and hauling by pumping mud, processing by spiral screws, and discharging by mud pumping.
    Wietnam ma potencjalne rezerwy okruchowego tytanu w wysokości około 650 Mt. Rezerwat leży na piaszczystych plażach kraju od Thanh Hoa do prowincji Binh Thuan. Kopalnie okruchowego tytanu w Wietnamie różnią się stanem geologicznym, skalą produkcji, sposobem wydobycia, rozwiązaniami w zakresie ochrony środowiska itp. Niektóre z nich działają na niewłaściwej technologii wydobywczej, w związku z czym spowodowały problemy środowiskowe i nieefektywną eksploatację. W związku z tym niezbędne jest posiadanie kryteriów doboru odpowiedniej technologii wydobywczej do podejścia do zrównoważonego rozwoju. W oparciu o kategorie geologiczne, skalę produkcji, charakterystykę górniczą, wymagania bezpieczeństwa, rekultywacji gruntów i ochrony środowiska oraz efektu górniczego, autorzy określili kryteria i sposób doboru odpowiedniej technologii wydobycia dla stacjonujących kopalni tytanu w Wietnamie, które mają na celu zwiększenie bezpieczeństwa , efektywne i trwałe. Te kategorie obejmują 1- wykonalny schemat wydobycia, 2- procedurę wydobycia, 3- wymaganą ilość wody, 4- stateczność zboczy, 5-rekultywację środowiska oraz 6-efekt ekonomiczny. Wynik zastosowania dla kopalni okruchowego tytanu Nam Suoi Nhum w prowincji Bình Thuan pokazuje, że najbardziej odpowiednim schematem tej kopalni jest technologia wydobywcza wykorzystująca strumienie hydrauliczne, pompowanie i ciągnięcie przez pompowanie szlamu, przetwarzanie za pomocą śrub spiralnych i odprowadzanie przez pompowanie błota.
    Źródło:
    Inżynieria Mineralna; 2020, 1, 2; 75-86
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing an Advanced Soft Computational Model for Estimating Blast-Induced Ground Vibration in Nui Beo Open-pit Coal Mine (Vietnam) Using Artificial Neural Network
    Opracowanie zaawansowanego modelu obliczeniowego do szacowania wibracji gruntu wywołanych wybuchem w odkrywkowej kopalni węgla Nui Beo (Wietnam) przy użyciu sztucznej sieci neuronowej
    Autorzy:
    Nguyen, Hoang
    Bui, Xuan‑Nam
    Tran, Quang Hieu
    Nguyen, Quoc Long
    Vu, Dinh Hieu
    Pham, Van Hoa
    Le, Qui Thao
    Nguyen, Phu Vu
    Powiązania:
    https://bibliotekanauki.pl/articles/317864.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    Wietnam
    górnictwo odkrywkowe
    sieci neuronowe
    Vietnam
    open pit mining
    artificial neural network
    Opis:
    The principal object of this study is blast-induced ground vibration (PPV), which is one of the dangerous side effects of blasting operations in an open-pit mine. In this study, nine artificial neural networks (ANN) models were developed to predict blast-induced PPV in Nui Beo open-pit coal mine, Vietnam. Multiple linear regression and the United States Bureau of Mines (USBM) empirical techniques are also conducted to compare with nine developed ANN models. 136 blasting operations were recorded in many years used for this study with 85% of the whole datasets (116 blasting events) was used for training and the rest 15% of the datasets (20 blasting events) for testing. Root Mean Square Error (RMSE), Determination Coefficient (R2), and Mean Absolute Error (MAE) are used to compare and evaluate the performance of the models. The results revealed that ANN technique is more superior to other techniques for estimating blast-induced PPV. Of the nine developed ANN models, the ANN 7-10-8-5-1 model with three hidden layers (ten neurons in the first hidden layer, eight neurons in the second layers, and five neurons in the third hidden layer) provides the most outstanding performance with an RMSE of 1.061, R2 of 0.980, and MAE of 0.717 on testing datasets. Based on the obtained results, ANN technique should be applied in preliminary engineering for estimating blast-induced PPV in open-pit mine.
    Źródło:
    Inżynieria Mineralna; 2019, 21, 2/2; 58-73
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Management strategy for seaports aspiring to green logistical goals of IMO: technology and policy solutions
    Autorzy:
    Le, Thanh Tuan
    Nguyen, Hoang Phuong
    Rudzki, Krzysztof
    Rowiński, Lech
    Bui, Viet Duc
    Truong, Thanh Hai
    Le, Huu Cuong
    Pham, Nguyen Dang Khoa
    Powiązania:
    https://bibliotekanauki.pl/articles/34605109.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    green seaport
    management strategy
    clean energy
    decarbonization
    sustainable Maritime
    Opis:
    Recently, because of serious global challenges including the consumption of energy and climate change, there has been an increase in interest in the environmental effect of port operations and expansion. More interestingly, a strategic tendency in seaport advancement has been to manage the seaport system using a model which balances environmental volatility and economic development demands. An energy efficient management system is regarded as being vital for meeting the strict rules aimed at reducing the environmental pollution caused by port facility activities. Moreover, the enhanced supervision of port system operating methods and technical resolutions for energy utilisation also raise significant issues. In addition, low-carbon ports, as well as green port models, are becoming increasingly popular in seafaring nations. This study comprises a comprehensive assessment of operational methods, cutting-edge technologies for sustainable generation, storage, and transformation of energy, as well as systems of smart grid management, to develop a green seaport system, obtaining optimum operational efficiency and environmental protection. It is thought that using a holistic method and adaptive management, based on a framework of sustainable and green energy, could stimulate creative thinking, consensus building, and cooperation, as well as streamline the regulatory demands associated with port energy management. Although several aspects of sustainability and green energy could increase initial expenditure, they might result in significant life cycle savings due to decreased consumption of energy and output of emissions, as well as reduced operational and maintenance expenses.
    Źródło:
    Polish Maritime Research; 2023, 2; 165-187
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Lasso and Elastic-Net Regularized Generalized Linear Model for Predicting Blast-Induced Air Over-pressure in Open-Pit Mines
    Model Lasso i uogólniony model liniowy elastycznej siatki do prognozowania nadciśnienia wywołanego wybuchem w kopalniach odkrywkowych
    Autorzy:
    Bui, Xuan‑Nam
    Nguyen, Hoang
    Tran, Quang Hieu
    Bui, Hoang‑Bac
    Nguyen, Quoc Long
    Nguyen, Dinh An
    Le, Thi Thu Hoa
    Pham, Van Viet
    Powiązania:
    https://bibliotekanauki.pl/articles/318532.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    Lasso model
    kopalnia odkrywkowa
    wybuchy
    open pit mines
    explosives
    Opis:
    Air overpressure (AOp) is one of the products of blasting operations in open-pit mines which have a great impact on the environment and public health. It can be dangerous for the lungs, brain, hearing and the other human senses. In addition, the impact on the surrounding environment such as the vibration of buildings, break the glass door systems are also dangerous agents caused by AOp. Therefore, it should be properly controlled and forecasted to minimize the impacts on the environment and public health. In this paper, a Lasso and Elastic-Net Regularized Generalized Linear Model (GLMNET) was developed for predicting blast-induced AOp. The United States Bureau of Mines (USBM) empirical technique was also applied to estimate blast-induced AOp and compare with the developed GLMNET model. Nui Beo open-pit coal mine, Vietnam was selected as a case study. The performance indices are used to evaluate the performance of the models, including Root Mean Square Error (RMSE), Determination Coefficient (R2), and Mean Absolute Error (MAE). For this aim, 108 blasting events were investigated with the Maximum of explosive charge capacity, monitoring distance, powder factor, burden, and the length of stemming were considered as input variables for predicting AOp. As a result, a robust GLMNET model was found for predicting blast-induced AOp with an RMSE of 1.663, R2 of 0.975, and MAE of 1.413 on testing datasets. Whereas, the USBM empirical method only reached an RMSE of 2.982, R2 of 0.838, and MAE of 2.162 on testing datasets.
    Źródło:
    Inżynieria Mineralna; 2019, 21, 2/2; 8-20
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Social capital and digital transformation of startups in Vietnam: the mediating role of access to resources
    Autorzy:
    Nguyen, Dat Hoang Anh
    Tran, Ghi Nha
    Tran, Khoa Dang
    Nguyen, Thach Ha
    Powiązania:
    https://bibliotekanauki.pl/articles/18029939.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Ekonomii i Zarządzania
    Tematy:
    social capital
    access to resources
    digital transformation
    kapitał społeczny
    dostęp do zasobów
    transformacja cyfrowa
    Opis:
    The purpose of this study is to use social capital theory to explain how startups in Vietnam undergo the digital transformation process. The study investigates the connection between social capital, resource access, and digital transformation in Vietnamese startups. 230 managers were analyzed using the Partial Least Squares Structural Model (PLS-SEM). The study found a positive correlation between social capital, resource access, and digital transformation. Additionally, the study looked at the role of resource access as a mediator between social capital and digital transformation. The findings of this study hold immense importance for managers seeking to establish social capital with stakeholders, including government agencies, customers, competitors, and suppliers in the digital platform services industry. Leveraging social capital can increase managers’ access to crucial resources, especially during the Covid-19 pandemic. The study acknowledges its limitations and identifies areas for future research.
    Źródło:
    Management; 2023, 27, 1; 1d84--200
    1429-9321
    2299-193X
    Pojawia się w:
    Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of Unmanned Aerial Vehicles for 3D topographic Mapping and Monitoring the Air Quality of Open-pit Mines
    Wykorzystanie bezzałogowych statków powietrznych (dronów) do monitorowania jakości powietrza w odkrywkowych kopalniach węgla kamiennego
    Autorzy:
    Bui, Xuan‑Nam
    Lee, Changwoo
    Nguyen, Quoc Long
    Adeel, Ahmad
    Cao, Xuan Cuong
    Nguyen, Viet Nghia
    Le, Van Canh
    Nguyen, Hoang
    Le, Qui Thao
    Duong, Thuy Huong
    Nguyen, Van Duc
    Powiązania:
    https://bibliotekanauki.pl/articles/317913.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    drony
    jakość powietrza
    kopalnie odkrywkowe
    unmanned aerial vehicles
    air quality
    open pit mines
    Opis:
    Recently remarkable advancement development of unmanned aerial vehicles (UAVs) has been observed and their applications have been shown in many fields such as agriculture, industry, and environmental management. However, in the mining industry, the application of UAV technology remains potential. This paper presents a low-cost unmanned aerial vehicle technology-based system for 3D mapping and air quality monitoring at open-pit mine sites in Vietnam. The system includes several dust sensors that are mounted on a low-cost rotary-wing type UAV. The system collects a variety of data, mainly images and airborne pollutant concentrations. To evaluate the performance of the proposed system, field tests were carried out at the Coc Sau coal mine. Based on the images transmitted to the ground monitoring station, large scale 3D topographic maps were successfully modeled. In addition, sensors mounted on the UAV system were able to monitor the levels of environmental variables associated with the air quality within the pit such as temperature, dust, CO, CO2, and NOx. The field test results in this study illustrate the applicability of the low-cost UAV for the 3D mapping and the air quality monitoring at large and deep coal pits with relatively high accuracy.
    Źródło:
    Inżynieria Mineralna; 2019, 21, 2/2; 223-239
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on launching technology of shield tunnel in Ho Chi Minh Metro line 1
    Autorzy:
    Nguyen, Xuan Loi
    Wu, Li
    Nguyen, Khanh Tung
    Bui, Quang Anh
    Nguyen, Huy Hoang
    Luu, Hoang Phuong
    Powiązania:
    https://bibliotekanauki.pl/articles/1853628.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Ho Chi Minh Metro
    maszyna tarczowa
    uruchomienie
    szyb
    poprawa gleby
    opad atmosferyczny
    miękkie oko
    shield machine
    launching
    shaft
    soil improvement
    precipitation
    soft eye
    Opis:
    The use of subway tunnel engineering technology has become more professional and refined with the growth of society and the advancement of science and technology. The initial construction process of a subway tunnel shield is the most critical part of the entire engineering system. Shield launching period construction is the most prone to accidents in the shield construction process, directly related to the smooth through the shield tunnel. The line 1 of Ho Chi Minh (HCM) Metro is the first subway line, the full length of 19.7 km, the underground road length of 2.6 km from km 0 + 615 to km 2 + 360, from Ben Thanh market, and then through the Sai Gon river and 14 station (including 3 underground stations and 11 elevated stations), reach Suoi Tien park and is located in Long Binh area station, underground building blocks including Ben Thanh market station to Opera House station interval, Opera House station, Opera House station to Ba Son station interval. This paper selects Shield launching period of Opera House station to Ba Son shaft interval as an example, analyze the key construction technology, construction control parameters and launching considerations of shield machine.
    Źródło:
    Archives of Civil Engineering; 2021, 67, 1; 387-401
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sulfur and lead isotope geochemical characteristics of Pb-Zn deposits in the Khau Loc zone, northeastern Vietnam, and their significance
    Autorzy:
    Hung, Khuong The
    Tung, Ta Dinh
    Binh, Do Quoc
    Sang, Pham Nhu
    Cuc, Nguyen Thi
    Linh, Nguyen Thi Hoang
    Tin, Quach Duc
    Powiązania:
    https://bibliotekanauki.pl/articles/2055848.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    lead-zinc
    sulfur isotopes
    lead isotopes
    Khau Loc zone
    northeastern Vietnam
    Opis:
    In northeastern Vietnam, the Khau Loc zone is considered to have high potential for lead-zinc mineralization. The lead isotope data for 18 galena samples and 18 ones of δ34S isotope data (including galena and pyrite samples) were collected from lead-zinc ore deposits in some areas in the Khau Loc zone, including Phia Dam, Khuoi Man, Ban Lin, Lung Dam, and Ta Pan. These were employed to investigate the sulfur and lead isotope geochemical characteristics of Pb-Zn deposits and their significance in this study. The samples were analyzed using the LA-ICP-MS to show that the Pb isotopic ratios of 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb in the galena samples range from 17.8908 to 18.6012, 15.5794 to 16.1025, 38.4420 to 39.2118, with the average values of 18.296, 15.749, and 38.812, respectively. The pyrite and galena samples had the δ34S isotope, ranging from 9.0 to 15.106. The sulfur isotope systematics implies that most of the lead-zinc ore formations originated from marine sedimentary evaporation deposits and magmatic intrusion-volcanic eruption sources rich in silica. The distribution of lead isotopic ratios had a well-defined cluster for each deposit, indicating the formation of lead-zinc deposits and lower crust and orogen trends. In addition, these findings of lead isotopic ratios and δ34S isotopes proved that the Khau Loc zone is an activated structure with continuous growth in continental crust thickness during the early Proterozoic and Cenozoic periods. Furthermore, the study results also presented the evolution of material sources involved in the formation of lead-zinc ores in the Khau Loc zone.
    Źródło:
    Geology, Geophysics and Environment; 2021, 47, 3; 143--157
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Carrier-Influenced Bistable Behaviour in Ring Cavity Configuration
    Autorzy:
    Nguyen, Ba An
    Nguyen, Trung Dan
    Hoang, Xuan Nguyen
    Powiązania:
    https://bibliotekanauki.pl/articles/1920640.pdf
    Data publikacji:
    1992-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Po
    78.20.Dj
    Opis:
    Bistable output-input light characteristics in the exciton spectral region have been examined in a ring cavity configuration taking ito account the influence of the presence of free carriers in the cavity as well as of the density-dependence of the exciton damping. The resulting modifications could serve as a means to optimize the optical bistable device operation.
    Źródło:
    Acta Physica Polonica A; 1992, 81, 4-5; 517-525
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysing the impact of cutting force and vibration on surface roughness in external cylindrical grinding of SKH2 steel
    Autorzy:
    Hoang, Long
    Nguyen, Linh Tuan
    Powiązania:
    https://bibliotekanauki.pl/articles/24084754.pdf
    Data publikacji:
    2023
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    surface roughness
    cutting force
    vibration
    SKH2 steel
    grinding
    Opis:
    The surface roughness of a part during external cylindrical grinding is directly impacted by cutting force and vibration, which are intermediate parameters. To improve the quality of finished parts, studying and controlling these parameters is essential. In this research, the Taguchi method combined with ANOVA analysis was utilized to analyse the effects of feed rate, cutting depth, and rotational speeds on cutting force and vibration amplitude. The test material used was SKH2 steel, which was heat-treated to a hardness of 60 HRC. The research aimed to investigate the relationship between cutting force, vibration, and surface roughness. The study concludes with an analysis of the influence of cutting force and vibration on the surface roughness of parts during external cylindrical grinding. The results show that as cutting force and vibration increase, the surface roughness of the workpiece in external grinding will also increase, and conversely when cutting force and vibration decrease, the surface roughness will decrease.
    Źródło:
    Journal of Machine Engineering; 2023, 23, 3; 130--140
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Disc tool profiling for air compressor screws with complex characteristic curves
    Autorzy:
    Nguyen, Tuan-Linh
    Hoang, Long
    Powiązania:
    https://bibliotekanauki.pl/articles/1833775.pdf
    Data publikacji:
    2021
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    disk tool
    meshing condition
    undercutting
    envelope
    gearing
    Opis:
    One of the best practical methods to machine the air compressor screw pairs is milling or grinding by disc tools. The mathematics involved in disc tool profiling is quite complex and requires representing the machined surface by mathematical equations without any singular points and undercutting. From a technical perspective, this article proposes the disc tool profiling integrated solution for machining complex profile screws from their reverse engineering data, which contains crucial issues such as machining deviation evaluation due to undercutting, appropriate tool position setting. The disc tool surface designed by the proposed method is highly accurate, leading the RMS error of the machined surface is less than 0.0201 mm. A difference of the angle, formed by the disc tool axis and the workpiece axis, less than 0.16°, is acceptable in air compressor technology, which leads to a machined surface RMS deviation of less than 0.0186 mm.
    Źródło:
    Journal of Machine Engineering; 2021, 21, 3; 101--109
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    AN EXPLORATORY STUDY OF ICT USE IN ENGLISH LANGUAGE LEARNING AMONG EFL UNIVERSITY STUDENTS
    Autorzy:
    Tri, Dang Hoang
    Nguyen, Nhung Hong Thi
    Powiązania:
    https://bibliotekanauki.pl/articles/941305.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
    Tematy:
    ICT
    EFL
    Opis:
    There has been a large volume of published studies describing the attitudes of teachers and students towards ICT usage to study English; nevertheless, limited research has been conducted to examine the use of ICT in terms of frequency of use, purposes, perceptions, and expectations among EFL students. Thus, the purpose of the current study was to address this research problem. The research used a convenience sample of 149 English major students who were invited to respond to the questionnaire survey. The findings indicated that the participants spent more time using ICT for private purposes than for English learning purposes. Most of them showed their positive attitudes towards ICT use to study English and expected that ICT should be used more frequently in the classroom in order to maximize language learning and teaching. Gaining an understanding of the way the learners employ ICT for their non-educational purposes may help “shed light on how best to determine their educational uses” (Fujimoto, 2012, p.165). Pedagogical implications were also given in this current inquiry.
    Źródło:
    Teaching English with Technology; 2014, 14, 4; 32-46
    1642-1027
    Pojawia się w:
    Teaching English with Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Circular transformation of current business solutions in wastewater management
    Cykliczna transformacja aktualnych rozwiązań biznesowych w zarządzaniu ściekami
    Autorzy:
    Czikkely, Marton
    Hoang, Nguyen Huu
    Fogarassy, Csaba
    Powiązania:
    https://bibliotekanauki.pl/articles/405190.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    conventional linear business models
    circular improve
    ReSOLVE framework
    Mapping analyze
    Business Model Canvas
    konwencjonalne liniowe modele biznesowe
    ramy ReSOLVE
    analiza mapowania
    osnowa modelu biznesowego
    Opis:
    The wastewater treatment technologies become more efficiency by biological treatment method business structure development. In this paper, we would like to present a circular economic transformation method to wastewater management development by economical way. The most used wastewater treatment technologies work with conventional business models (by a linear economic way). We determined a circular economic solve to get more effective and cost-efficient wastewater treatment system. The ReSOLVE framework and Mapping method were used and presented the main circular points (in focus of Regenerate part) of each technology to effectively application of treatment solutions. Regarding our research method results, we improved the Business Model Canvas and the main economic transformation points were given by the framework. In this short paper we would like to give answers to how could minimalize the wastewater production by business model development with low cost and effective economical background. The research clearly demonstrates that economic operators and members of the supply chain integrate their resources into circular systems, then business ecosystems can be continually redesigned, creating dynamically and efficiently self-regulating systems. The modern structure of environmental treatment methods does not mean exclusively technological development, the new business structure and innovative circular model could be more useful to rethink the economic loop and cascade solutions. Based on the research results we can almost be sure that the focus of related research will in the future be focused on sharing economy and big data applications.
    Technologie oczyszczania ścieków stają się bardziej wydajne dzięki rozwojowi struktury biznesowej metod oczyszczania biologicznego. W tym artykule chcielibyśmy przedstawić ekonomiczną metodę cyklicznej transformacji gospodarczej w rozwoju gospodarki ściekowej. Najczęściej stosowane technologie oczyszczania ścieków działają w oparciu o konwencjonalne modele biznesowe (w sposób liniowy ekonomiczny). Zdecydowaliśmy się na rozwiązanie ekonomiczne o obiegu zamkniętym, aby uzyskać bardziej wydajny i opłacalny system oczyszczania ścieków. Zastosowano szkielet ReSOLVE i metodę mapowania, które przedstawiły główne okrągłe punkty (w części Regenerate) każdej technologii w celu skutecznego zastosowania rozwiązań naprawczych. Jeśli chodzi o wyniki naszych metod badawczych, poprawiliśmy osnowe modelu biznesowego, a główne punkty transformacji gospodarczej zostały określone w ramach. W tym krótkim artykule chcielibyśmy odpowiedzieć na pytanie, w jaki sposób można zminimalizować produkcję ścieków poprzez opracowanie modelu biznesowego z niskim kosztem i efektywnym zapleczem ekonomicznym. Badanie wyraźnie pokazuje, że podmioty gospodarcze i członkowie łańcucha dostaw integrują swoje zasoby w systemy o obiegu zamkniętym, a następnie ekosystemy biznesowe można nieustannie przeprojektowywać, tworząc dynamicznie i skutecznie samoregulujące się systemy. Nowoczesna struktura metod oczyszczania środowiska nie oznacza wyłącznie rozwoju technologicznego, nowa struktura biznesowa i innowacyjny model kołowy mogą być bardziej przydatne do ponownego przemyślenia pętli ekonomicznej i rozwiązań kaskadowych. Na podstawie wyników badań możemy być prawie pewni, że badania pokrewne będą w przyszłości koncentrować się na udostępnianiu aplikacji ekonomicznych i dużych zbiorów danych.
    Źródło:
    Polish Journal of Management Studies; 2019, 20, 2; 196-209
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-objective optimization of the cylindrical grinding process of SCM440 steel using preference selection index method
    Autorzy:
    Tien, Dung Hoang
    Trung, Do Duc
    Thien, Nguyen Van
    Nguyen, Nhu-Tung
    Powiązania:
    https://bibliotekanauki.pl/articles/1833757.pdf
    Data publikacji:
    2021
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    MRR
    Taguchi PSI method
    surface roughness
    cylindrical grinding process
    Opis:
    This paper presents a study to ensure the minimum values of Ra and Rz, and the maximum value of MRR when external cylindrical grinding by the PSI method. The experiments were performed according to the orthogonal Taguchi L9 matrix with the input parameters including workpiece speed, feed rate, and depth of cut in the conventional grinding machine. Analysis of experimental results by Pareto chart showed that the feed rate and the depth of cut most influence on Ra and Rz, respectively. Feed rate and depth of cut all have a great influence on MRR. Meanwhile, the workpiece speed has a negligible effect on all three output parameters. The research results showed that to obtain the minimum values of Ra and Rz, and maximum of MRR, the workpiece speed, feed rate, and depth of cut were 400 rev/min 37.7 mm/min, 0.09 mm/rev, and 0.02 mm, respectively.
    Źródło:
    Journal of Machine Engineering; 2021, 21, 3; 110--123
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and performance analysis of a mechanically coupled spring compliant to out-of-plane oscillation
    Autorzy:
    Nguyen, Duong Van
    Nguyen, Chien Quoc
    Dang, Hieu Van
    Chu, Hoang Manh
    Powiązania:
    https://bibliotekanauki.pl/articles/27309868.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    coupled spring
    mode coupling
    serpentine spring
    Sigitta spring theory
    finite element
    method
    sprzężenie trybów
    element końcowy
    metoda
    Opis:
    In this paper, a spring system symmetrically arranged around a circular plate compliant to out-of-plane oscillation is proposed. The spring system consists of single serpentine springs mutually coupled in a plane. Three theoretical mechanical models for evaluating the stiffness of the spring system are built, which are based on the flexural beam, Sigitta, and serpentine spring theories and equivalent mechanical spring structure models. The theoretically calculated results are in good agreement with numerical solutions using the finite element method, with errors less than 10% in the appropriate dimension ranges of the spring. Compared to similar spring structures without mechanical coupling, the proposed mechanically coupled spring shows advantage in suppressing the mode coupling.
    Źródło:
    Archive of Mechanical Engineering; 2022, LXIX, 4; 629--643
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance analysis of serpentine springs compliant to out-of-plane oscillation
    Autorzy:
    Duong, Nguyen Van
    Chien, Nguyen Quoc
    Hieu, Dang Van
    Hoang, Chu Manh
    Powiązania:
    https://bibliotekanauki.pl/articles/2086964.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    serpentine spring
    out-of-plane oscillation
    curved spring beam
    straight spring beam
    mode coupling
    Opis:
    The performance of two serpentine type springs is comparatively investigated. The first type is composed of straight beams and the second one is composed of circular arcs. Based on comparing calculation results and simulation data, the crab-leg spring model is appropriate for evaluating the stiffness of springs. To obtain the operation mode to be the first mode, the number of turns and the opening angle of springs should be increased. The performance of springs is evaluated via analysis of mode coupling. This study is useful for choosing an appropriate serpentine spring and the stiffness calculation model for applications in microelectroemchanical sensors and actuators.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2022, 60, 1; 91--101
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric model analysis, geometrical characteristics and tool trajectories to surface roughness when machining the cycloid screw by a five-axis milling machine
    Autorzy:
    Pham, Van Bong
    Thien, Nguyen Van
    Nguyen, Van Que
    Duy, Trinh Nguyen
    Nguyen, Duy Khanh
    Tien, Dung Hoang
    Powiązania:
    https://bibliotekanauki.pl/articles/2086278.pdf
    Data publikacji:
    2022
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    cycloid screw surface
    five axis milling machine
    ball nose end mill
    surface roughness
    Opis:
    To improve the screw machining accuracy in modern air compressors. This paper investigates three main issues during the development process for cycloid screw machining methods on five-axis CNC machine tools with high precision and efficiency. First, the theoretical basis of cycloid screw surface shaping and derivative of the final profile equation is established. Then, modeling the center trajectory and feed rate according to the cycloid screw profile is given. Next is the experimental setup and simulation of the cycloid screw machining process and discussions. The obtained surface quality prediction parameters are close to the actual measured value, which can be used as a reference model for five-axis CNC milling technology processes. All experimental results obtained by the proposed mathematical model show that a surface with good surface quality is created, meeting the requirements for surface quality. The main work can be used as references for engineers and technicians in practice.
    Źródło:
    Journal of Machine Engineering; 2022, 22, 2; 108--124
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of supply chain management in construction industry
    Autorzy:
    Nguyen, Phong Thanh
    Nguyen, Vi Nguyen
    Pham, Luan Hong
    Nguyen, Thu Anh
    Nguyen, Quyen Le Hoang Thuy To
    Huynh, Vy Dang Bich
    Powiązania:
    https://bibliotekanauki.pl/articles/103168.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    supply chain management (SCM)
    limiting factor
    construction industry
    zarządzanie łańcuchem dostaw
    czynnik ograniczający
    przemysł budowlany
    Opis:
    The application of the supply chain management (SCM) in industry has achieved much success, especially in the manufacturing sector. In the current market, the Vietnamese construction companies must compete not only with domestic companies but also with foreign ones, the application of SCM is essential to improve efficiency and increase their competitive advantage. In this paper, a survey was carried out to identify factors that cause limitation in applying SCM to the Vietnamese construction industry. A qualitative approach was based on prime contractor’s perspective at the construction phase of the project. The survey questionnaire was designed by synthesizing and inheriting the previous studies and consultation with experts. The survey participants are those who have had working experience with main contractors and joined in the construction projects. The face-to-face interviews were conducted to collect data. Descriptive statistics analysis and Exploratory Factor Analysis (EFA) were used to analyze data. The results indicated seven leading causes which limited the application of SCM in the construction industry.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 2; 11-19
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water Lettuce (Pistia stratiotes L.) as a Potential Material for Biogas Production
    Autorzy:
    Cong, Nguyen Van
    Thanh, Tran Van
    Kha, Le Thi Mong
    Hoang, Nguyen Xuan
    Powiązania:
    https://bibliotekanauki.pl/articles/2105278.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    water lettuce
    anaerobic digestion
    renewable energy
    Opis:
    This study evaluated the biogas production potential of water lettuce (Pistia stratiotes L.) by batch anaerobic digestion under in-vitro conditions. Twenty-one litre-plastic jars were used to conduct 4 replications over 75 days. The results showed that solution temperature, pH and Eh were suitable for biogas production. More than 50% of the obtained CH4 was formed within 17–42 days after incubation. The maximum daily CH4 production was 0.052 L/gVS, whilst the daily H2S concentration was low, with a maximum value of 28 ppm within 14–21 d after incubation. Moreover, the peak of daily biogas production was seen at day 16 with production of 0.12 L/gVS. The results highlight that water lettuce biomass can be potentially used to produce high quality biogas in anaerobic incubation.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 6; 182--188
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy benchmarking management for beer and beverage industry in Vietnam
    Autorzy:
    Minh, Nguyen Dat
    Kien, Duon Trung
    Hoang, Truong Huy
    Powiązania:
    https://bibliotekanauki.pl/articles/2064458.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Ekonomii i Zarządzania
    Tematy:
    energy efficiency
    energy benchmarking
    specific energy consumption
    beer industry
    beverage industry
    Vietnam
    efektywność energetyczna
    benchmarking
    zużycie energii
    przemysł piwny
    Wietnam
    Opis:
    The purpose of this paper is to introduce basic principles of benchmarking and explain the methodology to set the specific energy consumption (SEC) target for the beer and beverage industry in Vietnam to evaluate performance, support decisions, and energy efficiency (EE) improvement. Energy benchmarking management method is used to assess EE performance. This study also presents the SEC methodology as a guide for Vietnam enterprises in the brewery sector on how to manage the EE consumption and to comply with the legal energy consumption quota in the beer and beverage production. The study supports the enterprise in how to determine the SEC and support for national EE is essential to the promotion and deployment of practical energy saving solutions and compliance with the SEC through a suitable energy-saving target. In addition, this paper is introducing the original SEC calculation in three cases of production in the beer and beverage industry including producing beer only, producing beverage only, and producing both beer & beverage in the context of Vietnam.
    Źródło:
    Management; 2021, 25, 2; 36--58
    1429-9321
    2299-193X
    Pojawia się w:
    Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Nitrogen and Potassium on Growth, Yield, and Seed Quality of Quinoa in Ferralsols and Acrisols under Rainfed Conditions
    Autorzy:
    Van Minh, Nguyen
    Hoang, Dinh Thai
    Anh, Dang Thi Phuong
    Long, Nguyen Viet
    Powiązania:
    https://bibliotekanauki.pl/articles/2086357.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    acrisols
    ferralsols
    nitrogen
    potassium
    quinoa
    Opis:
    The study has investigated the individual and combined effects of nitrogen and potassium on the growth, grain yield, and quality of quinoa in ferralsols and acrisols. The experiments were conducted during the dry season under rainfed conditions in Central Highland, Vietnam. The factorial design was a randomized complete block design with three replications. The results revealed the positive impacts of nitrogen and potassium on the growth and yield of quinoa. However, after the application of an optimum dose of nitrogen, growth, and yield were not significantly changed and even decreased when the dose continued increasing. Higher levels of nitrogen and potassium application resulted in greater protein and fat content, but lower starch and fiber contents, compared to lower levels. The fertilizer practice has to rely on soil fertility. The study shows that the application of 150 kg N and 105 kg K2O ha-1 could be the optimum rate of nitrogen and potassium for quinoa production in ferralsols and acrisols in Central Highland.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 4; 164--172
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of behaviour of the steel arch support in the geological and mining conditions of the Cam Pha coal basin, Vietnam
    Autorzy:
    Nguyen, Phu Minh Vuong
    Rotkegel, Marek
    Van, Hoang Do
    Powiązania:
    https://bibliotekanauki.pl/articles/1853833.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    podpora stalowa
    analiza numeryczna
    górnictwo wietnamskie
    steel arch support
    profiles of steel arch support
    numerical analysis
    Vietnamese coal mining industry
    Opis:
    In recent years, the Vietnamese coal mining industry has observed a dynamic increase in both its production and efficiency. In Vietnam, the most precious type of coal is anthracite, which is found in the Quang Ninh province. Industrial anthracite deposits are estimated to be over 2 billion Mg. At present, coal deposits are extracted mostly by the underground method. Coal production is gradually increasing in the underground mines in the Quang Ninh area and it is expected to constitute about 75% of the country’s total coal production in 2030. This involves an increase in the number and length of underground workings. Cam Pha is the largest coal basin of Vietnam, located in the Quang Ninh province. So far, the yearly length of underground workings driven in underground mines in the Cam Pha basin is roughly 90÷150 km. About 84 % of these underground workings are supported by the steel arch support made of SWP profile. A similar situation can be observed in Russia, Ukraine, China, India and Turkey. In addition, the average length of repaired underground workings in the Cam Pha basin constitutes approximately 30% of the total length driven . The main cause was reported is loss of underground workings stability. This requires significant material and labour costs as well as the cost of replacing damaged elements. Addi-tionally, it disturbs the continuity of the mining operations.This article presents the results of the numerical modelling of the rock mass around underground wor-kings driven in typical geo-mining conditions for underground coal mines in the Cam Pha basin, supported by the steel arch support made of SWP and V profiles. As a result of the conducted analyses, the range of failure zone of the rock mass around underground workings and the distribution of reduced stress in the steel arch support elements were determined. The effort states of the steel arch support made of SWP22 profile and V21 profile were compared. The simulations considered different inclinations angle of coal seam, following the structure of the rock mass in the Cam Pha basin. The analysis was carried out using the based-finite difference method code, FLAC2D. Based on the obtained results, actions for improving the stability of underground workings driven in the underground mines of the Cam Pha basin were proposed.
    Źródło:
    Archives of Mining Sciences; 2020, 65, 3; 551-567
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Front Stress Distribution Under the Impact of Cutting Height to Caving Height Ratio in Extra- -thick Longwall Top Coal Caving Technology
    Badanie nad rozkładem naprężeń przed ścianą gdy stosunek urabiania do odzyskania zmienia się w eksploatacji długich ścian przy bardzo grubych pokładach
    Autorzy:
    Bui, Manh Tung
    Nguyen, VanQuang
    Nguyen, Phi Hung
    Vo, Ngoc Dung
    Do, Hoang Hiep
    Powiązania:
    https://bibliotekanauki.pl/articles/319219.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    extra-thick seam
    extra-cutting height
    cutting/caving height ratio
    stress distribution
    bardzo gruby pokład
    duża wysokość urabiania
    stosunek wysokości urabiania/ odzyskania
    rozkład naprężeń
    Opis:
    The extraction with higher cutting height for extra-thick seam is the new research orientation in longwall caving technology. Due to the increase of top coal thickness and of cutting height which leads to the change of cutting/caving height ratio, the rule of roof failure (including top coal caving) and the distribution of stress around the face alter correspondingly. This paper is based on the geological conditions of face 8102 of Tashan-DaTong mine, employing the numerical model by UDEC2D code, analysing the effect of cutting/ caving height ratio on the law of stress distribution ahead of the face. When the ratio of cutting/caving height decreases and the cutting height increases, the results of the research have shown that: (i)- peak stress redistributes further ahead of the face and its value manifestly drops; (ii)- the plastic deformation ahead of face significant increases and the zone of plastic strain also expands. It is therefore concluded that the variation of cutting/caving height ratio results in the redistribution of roof pressure, which contributes to the control of roof failure and face stability.
    Przy bardzo grubych pokładach, eksploatacja z dużą wysokością to nowy kierunek badań w technologii zawału stropu węgla. Ze względu na grubość warstwy stropu węglowego i zwiększoną wysokość urabiania prowadzi do zmiany stosunku urabiania do odzyskania, co również zmienia regułę zapalenia skał stropowych i zmienia stan rozkładu naprężeń wokół ściany. W artykule, przedstawiono wyniki analizy wpływu stosunku urabiania do uzyskania opierając się na prawie rozkładu obciążenia przed ścianą. Analiza ta została oparta na warunkach geologicznych kopalni 8102 TaSan-DaTong wykorzystując model numeryczny UDEC2D. Wyniki badań pokazują, że wraz ze spadkiem stosunku urabiania do odzyskania, oznacza to wzrost wysokości urabiania, położenie maksymalnego naprężenia jest daleko od ściany, maksymalna wartość naprężeń znacznie spada, zniszczenie plastyczne przed ścianą i stropem gwałtownie rośnie, zwiększa się strefa odkształcenia plastycznego. Dlatego zmiana stosunku urabiania do odzyskania może zmienić stan rozkładu ciśnienia stropowego, co jest korzystne dla procesu niszczenia stropu i kontrolowania stabilności ściany.
    Źródło:
    Inżynieria Mineralna; 2020, 1, 2; 123-129
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal and Tidal Influence on Surface Water Quality – A Case Study in the Hau River Segment, Vietnamese Mekong Delta Province
    Autorzy:
    Ni, Duong Van
    Viet, Le Hoang
    Ly, Nguyen Hong Thao
    Powiązania:
    https://bibliotekanauki.pl/articles/2173269.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    surface water quality
    Hau Giang
    season
    discriminant analysis
    tide
    Opis:
    The study aimed to evaluate the influence of seasons and tides on surface water quality of Hau River in Hau Giang province, Vietnam. The water quality data were collected at six locations at low tide and high tide. The monitoring parameters included pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), ammonium (NH4+-N), nitrate (NO3--N), orthophosphate (PO43--P), total phosphorus (TP), total nitrogen (TN), iron (Fe) and Coliform. One-way analysis of variance (One-way ANOVA), cluster analysis (CA) and discriminant analysis (DA) were applied to determine the influence of tides and seasons on water quality. The surface water quality was compared with the national technical regulation on surface water quality in column A1 (QCVN 08-MT:2015/BTNMT). The results showed that surface water in the study area had organic pollution and high eutrophication potential. The BOD, COD, TN, TP, Fe and coliform parameters in low tide tended to be higher than those in high tide. Five parameters, including TSS, TP, TN, PO43--P and coliform had a significant difference between the wet season and the dry season by DA analysis. Cluster analysis classified the water quality into three clusters, mainly by the BOD, COD, TSS, PO43--P and Fe parameters. The study provides important information on the water quality of the Hau River in the Hau Giang province for water uses and monitoring.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 8; 290--298
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Occurrence, Ecological and Health Risk of Heavy Metals in Agricultural Soil in the Hau Giang Province, Vietnam
    Autorzy:
    Hong, Tran Thi Kim
    Dan, Truong Hoang
    Giao, Nguyen Thanh
    Powiązania:
    https://bibliotekanauki.pl/articles/2173352.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    agricultural soil
    ecological risk
    health risk
    Hau Giang province
    Opis:
    The study aimed to evaluate the occurrence of some heavy metals in agricultural soil in the Hau Giang province, Vietnam. The geographical accumulation index (Igeo), pollutant load index (PLI) and ecological risk index (RI) are used to assess the pollution levels and potential ecological risks due to the presence of heavy metals in agricultural soil. The results showed that the mean concentrations of Cu, Pb and Zn in the soil ranged from 16.25–40.32, 18.05–29.92 and 52.78–147.22 mg/kg, respectively, within the limits of QCVN 03-MT:2015/BTNMT. Cluster analysis showed that Pb originated from the process of using fertilizers, especially phosphate fertilizers in farming. Cu and Zn possibly share a common origin from the use of pesticides and fungicides in agricultural production. The Igeo value of Cu, Pb and Zn gradually increases in the order of Cu < Zn < Pb. The PLI (1.03–1.97) reflected that the soil in the study area is moderately polluted. The RI (14.80–25.33) represented a low potential ecological risk. In particular, position D3 had the highest level of pollution and risk among the study sites. Pb had the highest level of accumulation in soil with the highest single ecological risk factor; thus, measures should be taken to limit the source of Pb generation. The results of the study also indicated that ingestion route is the main exposure pathway by which heavy metals can be harmful to humans.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 9; 61--71
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Spatial-Temporal Variations of Surface Water Quality in the Southern Province of Vietnamese Mekong Delta Using Multivariate Statistical Analysis
    Autorzy:
    Hong, Tran Thi Kim
    Viet, Le Hoang
    Giao, Nguyen Thanh
    Powiązania:
    https://bibliotekanauki.pl/articles/2173256.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    surface water
    organic pollution
    multivariate statistical analysis
    Tien Giang province
    Opis:
    The study aimed to assess the variation in surface water quality in the Tien Giang province, Vietnam, and at the same time identify the main sources of water pollution. The surface water quality samples were collected at 34 locations (NM01-NM34) with 17 surface water quality indicators in March, June, September and November in canals and rivers in the Tien Giang province. Multivariate statistical analysis methods, including principal component analysis (PCA), cluster analysis (CA) and numerical discriminant analysis (DA), were used to analyze the variability and key indicators affecting the effect of multivariate statistical analysis. The analysis results show that the surface water quality in the study area is contaminated with organic (low DO, high BOD and COD) and nutrients (NH4+-N, NO2--N, PO43--P and TP), salinity (high Cl-). The PCA results showed that 14/17 surface water environmental parameters to be monitored are pH, temperature, TSS, BOD, COD, NH4+-N, NO2--N, PO43--P, TP, SO42-, Cl-, coliform and Fe. The PCA analysis showed that PC1-PC4 accounted for 79.70% of the variation in surface water quality in the study area. Potential surface water polluting sources include hydrological regime, domestic waste, agricultural production, industrial production activities. The CA results showed that 34 monitoring locations can be reduced to 27 locations, with a frequency of 4 times/year to ensure surface water quality representativeness. The DA indicated that the indicators of EC, SO42- and Cl- made the difference of the surface water quality between the wet and dry seasons. The current results provide important information on the current state of water quality for different uses and contribute to the improvement of the surface water quality monitoring system in the Tien Giang province.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 7; 1--9
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polymetallic Nodules Resource Estimation in the Suoi Thau-Sang Than Area, Northeastern Vietnam
    Ocena zasobów konkrecji polimetalicznych w rejonie Suoi Thau-Sang Than, północno-wschodnim Wietnamie
    Autorzy:
    Hung, Khuong The
    Sang, Pham Nhu
    Phuong, Nguyen
    Dung, Nguyen Tien
    Bui, Hoang‑Bac
    Nguyen, Quoc Phi
    Bui, Viet Sang
    Powiązania:
    https://bibliotekanauki.pl/articles/318903.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    polymetallic nodules
    resource estimation
    Suoi Thau-Sang Than area
    northeastern Vietnam
    konkrecja polimetaliczna
    szacowanie zasobów
    obszar SuoiTthau-Sang Than
    północno-wschodni Wietnam
    Opis:
    1,720 chemical, mineral, and petrography samples in the Suoi Thau-Sang Than area, northeastern Vietnam were collected to investigate polymetallic nodules resource. The similarity-analogy in ore geology, direct calculation method for metallization parameters, and mineral resource estimation based on cutoff grade change methods are employed to estimate polymetallic nodules resource from the Suoi Thau, Sang Than, and Ban Kep areas in northeastern Vietnam. The similarity-analogy in ore geology indicates 1,785,000 tons Cu, 12,005,000 tons Pb+Zn, and 195 kg Au in total. The direct calculation method for metallization parameters shows 2,060,000 tons Cu, 13,648,000 tons Pb+Zn, and 224 kg Au in total. These methods display that the Sang Than area contains mainly polymetallic nodules in the studied area. Following the mineral resource estimation based on cutoff grade changes, estimation results indicate potential Pb-Zn nodules resource in the Ban Kep and Cu nodules resource in the Sang Than, while no potential Au nodules resource in the Suoi Thau and the Sang Than as well as the Ban Kep. The estimation results obtained from mineral resource estimation based on cutoff grade changes are suitable with the results from the traditional geometric block methods. Our study suggests that the Sang Than area can be considered as a potential Cu nodules resource, and the Ban Kep area is potential Pb-Zn nodules resource in northeastern Vietnam for future exploitation, while there is no potential polymetallic nodules resource in the Suoi Thau area. Furthermore, the one resource estimation based on cutoff grade changes method displays an overview of the prospect on polymetallic nodules resources, indicating that this method can serve as a basis for the proposed selection of the prospective areas for effective Cu, Pb-Zn, and Au mineral exploration in the Suoi Thau-Sang Than area, northeastern Vietnam.
    W celu zbadania zasobów konkrecji polimetalicznych zebrano 1,720 próbek substancji chemicznych, minerałów i petrografii z obszaru Suoi Thau-Sang Than w północno-wschodnim Wietnamie. Podobieństwo-analogia w geolo-gii rudy, metoda bezpośredniego obliczania parametrów metalizacji i szacowania zasobów mineralnych w opar-ciu o metody zmian zawartości granicznej są wykorzystywane do szacowania zasobów konkrecji polimetalicz-nych w obszarze Suoi Thau, Sang Than i Ban Kep w północno-wschodnim Wietnamie. Podobieństwo-analogia w geologii rudy wskazuje łącznie na 1,785,000 ton Miedzi, 12,005,000 ton Ołowiu + Cynków i 195 kg Żłota. Meto-da bezpośredniego obliczania parametrów metalizacji pokazuje łącznie 2 060 000 ton Miedzi, 13,648,000 ton Ołowiu + Cynków i 224 kg Żłota. Te metody pokazują, że obszar Sang Than zawiera głównie konkrecje polimeta-liczne na badanym obszarze. Po oszacowaniu zasobów mineralnych na podstawie zmian zawartości granicznej, wyniki oszacowań wskazują na potencjalny zasobów konkrecji Ołowiu - Cynków w Ban Kep i Miedzi w Sang Than, natomiast nie ma potencjalnego zasobu konkrecji Żłota w Suoi Thau i Sang Than, a także w Ban Kep. Wy-niki uzyskane z szacowania zasobów mineralnych na podstawie zmian zawartości granicznej są zgodne z wyni-kami tradycyjnymi metodami bloków geometrycznych. Nasze badanie sugeruje, że obszar Sang Than można uznać za potencjalny zasób konkrecji Miedzi, a obszar Ban Kep jest potencjalnym zasobem konkrecji Ołowiu + Cynków w północno-wschodnim Wietnamie do przyszłej eksploatacji, natomiast w obszarze Suoi Thau nie ma potencjalnego zasobu konkrecji polimetalicznych. Co więcej, oszacowanie zasobu w oparciu o metody zmian zawartości granicznej przedstawia przegląd perspektyw dotyczących zasobów konkrecji polimetalicznych, wska-zując, że metoda ta może służyć jako podstawa do proponowanego wyboru perspektywicznych obszarów efek-tywnych Miedzi, Ołowiu-Cynków i Żłota poszukiwanie minerałów w obszarze Suoi Thau-Sang Than w północno-wschodnim Wietnamie.
    Źródło:
    Inżynieria Mineralna; 2020, 1, 2; 7-14
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Workflow of Ground Penetrating Radar Data Analysis Based on Maximum Energy Difference Steering
    Przebieg pracy z danymi radarowymi penetrującymi ziemię Analiza oparta na sterowaniu maksymalną różnicą energii
    Autorzy:
    Dang, Duy Hoang
    Le, Cuong Van Anh
    Nguyen, Thuan Van
    Nguyen, Long Quoc
    Huynh, Nhan Thanh
    Powiązania:
    https://bibliotekanauki.pl/articles/28756746.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    ground penetrating radar
    phase analysis
    energy difference
    radar penetrujący podłoże
    analiza fazowa
    różnica energii
    Opis:
    Ground Penetrating Radar is commonly used in civil engineering sectors. Underground anomalies (i.e., electric wires, water pipes or sinkholes) can be detected through representations of hyperbolae in the measured processed GPR image. Our work focuses on detecting the underground objects and understanding their metallic or nonmetallic characteristics. The max energy difference attribute is applied to illuminate their positions while phase analysis process can determine change of phase spectrum in the diffracted signals. For improving phase analysis, we applied a novel workflow combining conventional processed steps and a zooming step for preserving phase originality without disturbed by any unnecessary filters. We applied the workflow in model and real data for proving its effectiveness. Interpretation of two real datasets in Vietnam by our workflow can express existences of the artificial underground anomalies as well as their matter characteristics comparing to their surrounding environments.
    Ground Penetrating Radar jest powszechnie stosowany w inżynierii lądowej i wodnej. Podziemne anomalie (np. przewody elektryczne, rury wodociągowe lub zapadliska) można wykryć za pomocą reprezentacji hiperbol w zmierzonym przetworzonym obrazie GPR. Nasza praca koncentruje się na wykrywaniu podziemnych obiektów i zrozumieniu ich metalicznych lub niemetalicznych wła-ściwości. Atrybut maksymalnej różnicy energii jest stosowany do oświetlania ich pozycji, podczas gdy proces analizy fazowej może określić zmianę widma fazowego w dyfrakcyjnych sygnałach. Aby usprawnić analizę fazową, zastosowaliśmy nowatorski przepływ pracy łączący konwencjonalne kroki przetwarzania i krok powiększania w celu zachowania oryginalności fazy bez zakłócania przez niepotrzebne filtry. Zastosowaliśmy przepływ pracy w modelu i rzeczywistych danych, aby udowodnić jego skuteczność. Interpretacja dwóch rzeczywistych zbiorów danych w Wietnamie za pomocą naszego przepływu pracy może wyrazić istnienie sztucznych anomalii podziemnych, a także ich charakterystykę materii w porównaniu z otaczającym je środowiskiem.
    Źródło:
    Inżynieria Mineralna; 2023, 1; 195--202
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An efficient pedestrian attribute recognition system under challenging conditions
    Autorzy:
    Nguyen, Ha X.
    Hoang, Dong N.
    Tran, Tuan A.
    Dang, Tuan M.
    Powiązania:
    https://bibliotekanauki.pl/articles/24200444.pdf
    Data publikacji:
    2023
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Instytut Informatyki Technicznej
    Tematy:
    pedestrian attribute recognition
    Deep Learning
    vision transformer
    security surveil-lance
    Opis:
    In this work, an efficient pedestrian attribute recognition system is introduced. The system is based on a novel processing pipeline that combines the best-performing attribute extraction model with an efficient attribute filtering algorithm using keypoints of human pose. The attribute extraction models are developed based on several state-of-the-art deep networks via transfer learning techniques, including ResNet50, Swin-transformer, and ConvNeXt. Pre-trained models of these networks are fine-tuned using the Ensemble Pedestrian Attribute Recognition (EPAR) dataset. Several optimization techniques, including the advanced optimizer Adam with Decoupled Weight Decay Regularization (AdamW), Random Erasing (RE), and weighted loss functions, are adopted to solve issues of data unbalancing or challenging conditions like partial and occluded bodies. Experimental evaluations are performed via EPAR that contains 26 993 images of 1477 person IDs, most of which are in challenging conditions. The results show that the ConvNeXt-v2-B outperforms other networks; mean accuracy (mA) reaches 85.57%, and other indices are also the highest. The addition of AdamW or RE can improve accuracy by 1-2%. The use of new loss functions can solve the issue of data unbalancing, in which the accuracy of data-less attributes improves by a maximum of 14% in the best case. Significantly, when the attribute filtering algorithm is applied, the results are dramatically improved, and mA reaches an excellent value of 94.85%. Utilizing the state-of-the-art attribute extraction model with optimization techniques on the large-scale and diverse dataset and attribute filtering has shown a good approach and thus has a high potential for practical applications.
    Źródło:
    Machine Graphics & Vision; 2023, 32, 2; 3--18
    1230-0535
    2720-250X
    Pojawia się w:
    Machine Graphics & Vision
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A study on the influence of printing orientation in metal printing using material extrusion technology on the mechanical properties of 17-4 stainless steel products
    Autorzy:
    Dang, Long Cao
    Nguyen, Cuong Van
    Le, Anh Hoang
    Bui, Danh Thanh
    Powiązania:
    https://bibliotekanauki.pl/articles/28407327.pdf
    Data publikacji:
    2023
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    additive manufacturing
    material extrusion
    17-4 PH stainless steel
    mechanical properties
    Opis:
    This study investigated the influence of print orientation on the mechanical properties of 17-4 PH stainless steel parts fabricated using material extrusion technology. Tensile test specimens were 3D printed in different orientations (flat, on-edge, and upright), and their mechanical properties were evaluated. The results showed that the print orientation significantly affected the ultimate tensile strength, yield strength, and elongation at failure of the specimens. The flat and on-edge orientations exhibited similar mechanical properties, while the upright orientation resulted in lower strength and higher fracture susceptibility. Hardness measurements also indicated variations in hardness distribution among the orientations. The findings emphasize the importance of optimizing the print orientation parameter to achieve desired mechanical characteristics in 17-4 PH stainless steel parts.
    Źródło:
    Journal of Machine Engineering; 2023, 23, 4; 89--100
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of financial development on economic stability: evidence from asian countries
    Wpływ rozwoju finansowego na stabilność gospodarczą: dowody z krajów azjatyckich
    Autorzy:
    Lee, Anh Hoang
    Pham, An Ha Thi
    Doan, Kim Thanh
    Nguyen, Thanh Phuc
    Powiązania:
    https://bibliotekanauki.pl/articles/27315179.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    financial development
    economic stability
    Bayesian analysis
    rozwój finansowy
    stabilność gospodarcza
    analiza Bayesowska
    Opis:
    In recent years, most empirical studies have explored the critical role of financial sector development in economic growth. However, the study of the relationship between the progress of the financial sector and the volatility of economic development has received very little attention. This study is the first attempt at assessing the impact of financial development on the economic stability of Asian countries. In this study, economic stability is assessed through several proxies, such as growth stability, inflation stability and exchange rate stability. Employing panel data of 22 Asian economies covering the period 2011-2019 and Bayesian analysis, the findings show that financial development significantly impacts the economic stability of Asian countries. Additionally, depending on different indicators of financial development, the impact on economic stability of countries will be different. Given these research results, policy implications for economic stability in Asian countries are proposed. Besides, to stabilize growth, the study also suggests that Asian countries need better control of the ratio of non-performing loans to the total credit of the economy.
    W ostatnich latach większość badań empirycznych dotyczyła kluczowej roli rozwoju sektora finansowego we wzroście gospodarczym. Jednak badaniu związku między postępem sektora finansowego a zmiennością rozwoju gospodarczego poświęcono bardzo mało uwagi. Niniejsze opracowanie jest pierwszą próbą oceny wpływu rozwoju finansowego na stabilność gospodarczą krajów azjatyckich. W tym opracowaniu stabilność gospodarcza jest oceniana za pomocą kilku wskaźników, takich jak stabilność wzrostu, stabilność inflacji i stabilność kursu walutowego. Wykorzystując dane panelowe 22 gospodarek azjatyckich obejmujące lata 2011-2019 i analizę bayesowską, wyniki pokazują, że rozwój finansowy znacząco wpływa na stabilność gospodarczą krajów azjatyckich. Ponadto, w zależności od różnych wskaźników rozwoju finansowego, wpływ na stabilność gospodarczą krajów będzie różny. Biorąc pod uwagę te wyniki badań, zaproponowano wnioski dotyczące polityki stabilności gospodarczej w krajach azjatyckich. Poza tym, aby ustabilizować wzrost, zasugerowano również, że kraje azjatyckie potrzebują lepszej kontroli stosunku kredytów zagrożonych do całkowitego kredytu w gospodarce.
    Źródło:
    Polish Journal of Management Studies; 2023, 27, 1; 164--180
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithofacies and depositional environments of the Paleogene/Neogene sediments in the Hoanh Bo Basin (Quang Ninh province, NE Vietnam)
    Autorzy:
    Hoang, V. T.
    Wysocka, A.
    Phan, D. P.
    Nguyen, Q. C.
    Ziółkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/184794.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    terrestrial environments
    lithofacies
    Paleogene
    Neogene
    Vietnam
    Opis:
    The Hoanh Bo Basin is a multiple period formed basin which is associated with the tectonic mechanism due to the activity of the Chi Linh-Hon Gai and Trung Luong Faults during the late Paleogene – early Neogene time. The basin is filled with continental sediments, comprising mainly polymictic conglomerates, sandstones, siltstones, claystones and shales. Coarser-grained polymictic deposits predominate along the northern and western margins of the basin, while different types of siltstones, claystones, even sandstones occur in its center, as well as along its southern and eastern parts toward the Ha Long Bay. The source rocks for sedimentary materials are mainly originated from rocks of the Hon Gai and Ha Coi Formations. Based on the dominant grain-size class, texture, stratification, degree of clast rounding and sorting, 17 lithofacies were determined in the Hoanh Bo Basin infill. The basin is filled by gravelly, sandy and fine-grained lithofacies just covers a modest area but it represents a full of succession of 4 depositional systems including alluvial fan, fluvial, deltaic and lacustrine environments. Alluvial fan and fluvial environments are characterized by an assemblage of lithofacies such as sand- and mud-supported disorganized breccias (Gb), clast- to sand-supported conglomerates (Gmm), clast-supported inverse-graded conglomerates (Gig), planar-cross-bedded conglomerates (Gp), trough cross-bedded conglomerates (Gt), horizontally stratified conglomerates (Gh), planar cross-bedded sandstones (Sp), trough cross-bedded sandstones (St), ripple cross-laminated sandstones (Sr), horizontally bedded sandstones (Sh), massive sandstones (Sm), massive mudstones, siltstones (Fsm), laminated siltstones and mudstones (Fl), massive claystones (Fm) and coaly lithofacies (C); the deltaic assemblage is dominated by planar-cross-bedded conglomerates (Gp), horizontally stratified conglomerates (Gh), planar cross-bedded sandstones (Sp), horizontally bedded sandstones (Sh), low-angle cross-bedded sandstones (Sl); while the lacustrine assemblage consists of ripple cross-laminated sandstones (Sr), horizontally bedded sandstones (Sh), normally graded sandstones (Sng), massive mudstones, siltstones (Fsm), laminated siltstones and mudstones (Fl), massive claystones (Fm) and coaly lithofacies (C).
    Źródło:
    Geology, Geophysics and Environment; 2015, 41, 4; 353-369
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identifying Key Parameters Influencing Soil Quality at Various Depths in Tram Chim National Park, Dong Thap Province, Vietnam
    Autorzy:
    Giao, Nguyen Thanh
    Nhien, Huynh Thi Hong
    Dan, Truong Hoang
    Ni, Duong Van
    Powiązania:
    https://bibliotekanauki.pl/articles/2202379.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    soil quality
    national park
    organic matter
    alkaline soil
    multivariate analysis
    Opis:
    This study used multivariate statistics including cluster analysis (CA) and principal component analysis (PCA) to evaluate the variability and key indicators causing changes in soil quality in Tram Chim National Park, Dong Thap province, Vietnam. Soil samples were collected in the dry season at the habitats of Ischaemum rugosum (CM), Panicum repens (CO), Nelumbo nucifera (LS), Eleocharis dulcis (NO), Oryza rufipogon (LM), Rice field (RL), Melaleuca cajuputi (T) in two layers: A (0–20 cm) and B (20–40 cm). The parameters of pH, total nitrogen (TN), total phosphorus (TP), total acidity (TA), organic matter (OM), total iron (Fe) and exchanged aluminum (Al3+) were used to assess soil quality. The results showed that soil pH was low in both A and B layers. Fe and Al were both high, and the concentrations of these metals in layer A were higher than those in layer B. The OM content was medium while the TN and TP levels were very low. Most of the soil quality indicators tended to decrease with the depth (except for TA). The results of CA analysis showed that there was almost no major change in soil quality between the two soil layers; however, the soil quality in rice field habitat was different from other habitats. The cause may be due to human impact in adding fertilizers/pesticides during farming practices. The PCA results showed at least five influencing factors, explaining 99.7% and 99.9% of soil quality variation in A and B layers. The Al3+, TA, OM, and TP parameters had the main influence on the soil quality of layer A. Meanwhile, the pH, Al3+, TA, TN, Fet indicators had influence on the soil quality of layer B. These indicators need to be future surveyed to assess the evolution of soil quality in the study area.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 2; 81--91
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    BIM competency in personnel recruitment in Vietnam construction enterprises
    Autorzy:
    Anh, Pham Xuan
    Toan, Nguyen Quoc
    Nam, Tran Phuong
    Long, Hoang Duy
    Thang, Do Duc
    Powiązania:
    https://bibliotekanauki.pl/articles/27312107.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    kompetencja
    modelowanie informacji o budynku
    BIM
    rekrutacja personelu
    personel
    firma budowlana
    Wietnam
    competency
    building information modelling
    personnel recruitment
    personnel
    construction company
    Vietnam
    Opis:
    The world has been implementing Building Information Modelling (BIM) successfully to construction projects from small to large scale. In Vietnam and many other countries, BIM is also widely applied in different fields of the construction industry. However, there are still many problems that need to be solved. One of those is to determine the necessary BIM competencies, thereby develop BIM personnel recruitment standards. The article identifies the competencies as well as evaluates their importance when supporting the recruitment of BIM personnel in construction enterprises in Vietnam. Through survey forms such as survey on online recruitment, expert interviews, and survey forms, the study is conducted with Likert scale, relative importance index (RII) for result analysis and ranking the importance of BIM competency for three distinct group of positions in Vietnam. With this result, the authors hope that the study will be an important reference, contributing to the development and concretization of the required competency criteria in the recruitment of BIM personnel in Vietnam and other similar countries.
    Źródło:
    Archives of Civil Engineering; 2023, 69, 2; 381--397
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The efficiency of eco-logistics processes on the food market
    Efektywność procesów eko-logistycznych na rynku produktów żywnościowych
    Autorzy:
    Dorozińska, W.
    Hoang, L.
    Kwiatkowski, M.
    Nguyen, M.
    Nowicka, D.
    Sikora, M.
    Stańko, P.
    Quan, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/112734.pdf
    Data publikacji:
    2016
    Wydawca:
    STE GROUP
    Tematy:
    eco-logistics
    reverse logistics
    food market
    ekologistyka
    środowisko
    logistyka zwrotna
    rynek produktów żywnościowych
    Opis:
    The paper discusses the question of the efficiency of eco-logistics on the food market. The aim of the article is to present major problems related to the impact of food production processes, packaging, distribution and transport on the environment. It presents the origins of eco-logistics in relation to the concepts of logistics and reverse logistics. It analyses the characteristics and general assumptions of the efficiency of eco-logistics processes and describes food market as well as its impact on the natural environment. Furthermore it discusses the issue of waste generation and presents business entities operating on the food market in the aspect of their further development. The question of sanitary standards for products of the food sector is analyzed as well as the dynamics of the development of technologies used in the processes of reverse logistics, changing exogenic expectations and systems of values.
    Artykuł podejmuje problematykę efektywności eko-logistyki na rynku produktów żywnościowych. Celem artykułu jest przedstawienie głównych problemów oddziaływania procesów wytwórczych produktów żywnościowych, opakowań, dystrybucji oraz transportu na środowisko. Przedstawiono w nim genezę eko-logistyki w nawiązaniu do pojęcia logistyka i logistyka zwrotna. Została przedstawiona charakterystyka oraz ogólne założenia efektywności procesów eko-logistycznych, jednocześnie opisano rynek produktów żywnościowych oraz jego wpływ na środowisko naturalne. Ponadto określono w nim problematykę generowania odpadów przez podmioty gospodarcze działające na rynku żywnościowym w aspekcie ich dalszego zagospodarowania. Poruszono, także temat norm sanitarnych dla produktów z sektora gospodarki żywnościowej oraz dynamikę rozwoju technologii wykorzystywanych w procesach logistyki zwrotnej, zmieniających się oczekiwań egzogenicznych i systemów wartości.
    Źródło:
    Systemy Wspomagania w Inżynierii Produkcji; 2016, 3 (15); 59-69
    2391-9361
    Pojawia się w:
    Systemy Wspomagania w Inżynierii Produkcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in nutrient and heavy metal content levels of sawdust due to vermicomposting by Allomyrina dichotoma subsp. tunobosonis
    Autorzy:
    Hoang, C.N.
    Yang, Z.-W.
    Huang, M.-Y.
    Lin, K.-H.
    Yang, C.-M.
    Nguyen, M.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/81229.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vermicomposting
    organic waste
    nutrient
    heavy metal content
    sawdust substrate
    Allomyrina dichotoma
    beetle
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of macro economic factors and financial development on energy projects - case in ASEAN countries
    Autorzy:
    Hanh, Hoang Thanh
    Huy, Dinh Tran Ngoc
    Phuong, Nguyen Thi Thanh
    Nga, Le Thi Viet
    Anh, Pham Tuan
    Powiązania:
    https://bibliotekanauki.pl/articles/1818318.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Ekonomii i Zarządzania
    Tematy:
    countries ASEAN
    commerce
    financial development
    energy project
    macroeconomic
    macro politicies
    kraje ASEAN
    handel
    rozwój finansowy
    projekty energetyczne
    makroekonomia
    makropolityka
    Opis:
    ASEAN (The Association of SouthEast Asian Nations) demand on energy is depending on economic growth of each country, resources, and political and regulations of each country. This study aims to investigate the role of international trade, financial development, foreign direct investment (FDI) on the consumption of renewable energy (RE) in ASEAN countries of the world. The findings explore that positive nexus among the international trade, real output, financial development, foreign direct investment and consumption of RE. Last but not least, this paper will propose several recommendations and policy suggestion for ASEAN countries to manage and encourage better renewable energy projects in the region. One of its original value is that, in the globalization and integration era, environment pollution will affect all ASEAN countries and in the region, so these nations need to link together to implement renewable projects for environment protection and for further generation.
    Źródło:
    Management; 2020, 24, 2; 146-157
    1429-9321
    2299-193X
    Pojawia się w:
    Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid end-to-end approach integrating online learning with face-identification system
    Autorzy:
    Nguyene, Dat Van
    Nguyen, Son Trung
    Pham, Thi Hong Anh
    Pham, Van Toan
    Hoang, Thao Thu
    Thanh, Ta Minh
    Powiązania:
    https://bibliotekanauki.pl/articles/27312886.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    facial recognition
    visual search engine
    end-to-end applications
    online learning
    ElasticSearch (ES)
    ES
    Opis:
    Facial recognition has been one of the most intriguing and exciting research topics over the last few years. It involves multiple face-based algorithms such asfacial detection, facial alignment, facial representation, and facial recognition. However, all of these algorithms are derived from large deep-learning architectures, leading to limitations in development, scalability, accuracy, and deployment for public use with mere CPU servers. Also, large data sets that contain hundreds of thousands of records are often required for training purposes. In this paper, we propose a complete pipeline for an effective face-recognition application that requires only a small data set of Vietnamese celebrities and a CPU for training, solving the problem of data leakage, and the need for GPU devices. The pipeline is based on the combination of a conversion algorithm from face vectors to string tokens and the indexing & retrieval process by Elasticsearch, thereby tackling the problem of online learning in facial recognition. Compared with other popular algorithms on the same data set, our proposed pipeline not only outperforms the counterpart in terms of accuracy but also delivers faster inference, which is essential to real-time applications.
    Źródło:
    Computer Science; 2023, 24 (1); 141--161
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Space law in Vietnam: outer space policy, legal development and its future pathway
    Autorzy:
    Khanh Linh, Le Thi
    Anh, Hoang Thao
    Dieu Ha, Tran Thi
    Lan Phuong, Nguyen Luu
    Thuy Nhi, Le Thi
    Powiązania:
    https://bibliotekanauki.pl/articles/2127985.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Metropolitalny
    Tematy:
    Przestrzeń kosmiczna
    polityka
    prawo
    przyszła droga
    współpraca międzynarodowa
    Wietnam
    Outer space
    policies
    laws
    future pathway
    international cooperation
    Vietnam
    Opis:
    Chociaż Wietnam uczestniczył w licznych operacjach kosmicznych, współpracując z wieloma narodami z całego świata, prawna regulacja sektora kosmicznego jest wciąż w powijakach. W artykule przedstawiono rozwój polityki i prawa kosmicznego, a także współpracy międzynarodowej w zakresie wykorzystania przestrzeni kosmicznej w Wietnamie od 1979 roku do chwili obecnej, z punktem zwrotnym w 2006 roku. Autorzy wskazali także kilka prognoz dotyczących przyszłej ścieżki wietnamskiego prawa kosmicznego w nowej erze, liczonej od 2020 roku.
    Although Vietnam has participated in numerous outer space operations with many nations worldwide, its legal system in this sector is still in its infancy and consequently has several restrictions. More specifically, this article investigates the establishment and evolution of policies, laws, and international cooperation regarding the utilization of outer space in Vietnam from 1979 to the present, with the turning point in 2006. The authors then give some predictions concerning the future pathway of Vietnamese space law in the new age from 2020.
    Źródło:
    Ad Astra. Program badań nad astropolityką i prawem kosmicznym; 2022, 5; 4-13
    2720-4456
    Pojawia się w:
    Ad Astra. Program badań nad astropolityką i prawem kosmicznym
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Mulberry Pomace Addition and Transglutaminase Treatment on the Quality of Pasta Enriched with Antioxidants and Dietary Fiber
    Autorzy:
    Ta, Thi Minh Ngoc
    Hoang, Chi Hieu
    Nguyen, Thao Mi
    Tran, Thi Thu Tra
    Ton, Nu Minh Nguyet
    Van Viet Man, Le
    Powiązania:
    https://bibliotekanauki.pl/articles/24024618.pdf
    Data publikacji:
    2023-10-10
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    antioxidant
    dietary fiber
    mulberry pomace
    pasta
    transglutaminase
    Opis:
    Mulberry pomace powder, a by-product of mulberry juice processing, was added to pasta recipe to make pasta with high dietary fiber and antioxidant contents. The effects of mulberry pomace ratio on the nutritional, textural and cooking properties as well as the sensory overall acceptance of the product were investigated. A significant increment in dietary fiber and total anthocyanin contents as well as decrement in cooking quality, texture and color change were observed. The cooking loss increased with the substitution level of mulberry pomace while the optimal cooking time, swelling index and water absorption index decreased. The quality improvement of 10% mulberry pomace fortified pasta was investigated by adding a transglutaminase preparation with enzyme dosage from 0.25 to 1.00 U/g protein. The fortified pasta treated with transglutaminase at 0.50 U/g protein showed a significant improvement in chewiness, tensile strength and elongation rate but was not significantly affected in terms of the swelling index and water absorption. The use of transglutaminase also improved the overall acceptability of the fortified pasta. Mulberry pomace powder may, therefore, be considered a potential antioxidant-rich and dietary fiber-rich material for incorporation into pasta products.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2023, 73, 4; 301-310
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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