Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Tran, Ngoc Anh" wg kryterium: Autor


Wyświetlanie 1-9 z 9
Tytuł:
Application of AHP-GIS Model to Assess the Ecological Suitability of Codonopsis javanica in Kon Plong District, Kon Tum Province, Viet Nam
Autorzy:
Tri, Chu Luong
Tuan, Tran Anh
Kiem, Truong Ngoc
Powiązania:
https://bibliotekanauki.pl/articles/2173290.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Codonopsis javanica
AHP
analytic hierarchy process
GIS
ecological adaptation
Kon Plong
Opis:
The Kon Plong district is located in the northeast area of the Kon Tum province, where ethnic people, such as Xo Dang and Hre, are dominant. With the portion of the poor families accounting for more than 50% of the total households, the improvement in the livelihood of ethnic is an emergency. Among the approaches to enhance the economical situation in the mountainous area like Kon Plong, the sustainable utilization of natural resources to produce valuable products is a possibility. The Codonopsis javanica (Blume) Hook.f. & Thomson (native name in the Vietnamese language is Dang Sam) is a precious medicinal plant with many benefits in pharmacological uses for human health. In nature, C. javanica is favorably distributed in the template climate and high mountain area. On the basis of the multi-criteria analysis using AHP (Analytic Hierarchy Process) integrated GIS, the influence of climate factors and soil features in the Kon Plong district on the growth of C. javanica was evaluated. Using AHP evaluation, the four classes of adaptation thresholds (very suitable, suitable, less suitable and not suitable) between the C. javanica growth and climate or soil factors were determined and expressed in weight values. These adaptation values (weight values) were then exported to ecological adaptation maps using the GIS mapping system. The results showed that the most suitable area (called S1 and S2) for the cultivation of C. javanica could be an area of 77 ha, accounting for 55.8% of the study area. The area with high adaptability (S1) for growing C. javanica is mainly located in the Mang Den town and Mang But commune (the south area of the Kon Plong district). These study findings suggested that the growth of C. javanica is suitable in several places in Kon Plong and the production process of C. javanica probably promotes the exploitation of sustainable utilization of local medical plant biomass in the study area.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 276--283
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatty Acid Composition and Anticancer Activity of Neutral and Polar Lipids of Pacific Oyster (Crassostrea gigas) Cultured in Khanh Hoa Coast in Vietnam
Autorzy:
Nguyen, Minh V.
Kakooza, Derrick
Do, Thi Hong Tuoi
Tran, Anh P.
Nguyen, Han T.
Tran, Ngoc Q.
Powiązania:
https://bibliotekanauki.pl/articles/31341116.pdf
Data publikacji:
2024-05-24
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
anticancer activity
fatty acid profile
lipid fraction
n3/n6 ratio
thrombogenicity
Opis:
In this study, we investigated the fatty acid composition and anticancer activity of neutral and polar lipid fractions extracted from Crassostrea gigas oysters cultured in Nha Phu Lagoon, Khanh Hoa Coast, harvested during the five months of January, April, May, September, and November. Analysis revealed that saturated fatty acids (SFAs) were the most abundant fatty acids in the neutral lipid fraction, followed by monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs). Conversely, the polar lipid fraction exhibited a different order, with PUFAs being the most abundant, followed by MUFAs and SFAs. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were identified as the most prevalent polyunsaturated fatty acids, while oleic acid and palmitic acid were the predominant monounsaturated and saturated fatty acids, respectively. Notably, the combined content of EPA and DHA in the polar lipid fraction consistently exceeded 30% throughout all five months of analysis. Thrombogenicity index (TI) values ranged from 0.13 to 0.29 for the polar lipid fraction and from 0.6 to 1.1 for the neutral lipid fraction. Moreover, the polar lipid fraction exhibited significantly higher n3/n6 ratios compared to the neutral lipid fraction. The polar lipid fraction exhibited stronger inhibitory effects on the growth of the three cancer cell lines (HepG2, MDA-MB-231, and RD) compared to the neutral lipid fraction. The findings of the present study show that lipids extracted from C. gigas oysters cultured in Khanh Hoa Coast have a weak anticancer activity but may still aid in prevention and treatment of certain cancer types.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2024, 74, 2; 169-176
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genotype TNF-α(-308) and Silicosis on Factory Workers in Vietnam in 2020
Autorzy:
Nguyen, Viet
Nguyen, Thi Thu Huyen
Dao, Xuan Dat
Vu, Xuan Quy
Pham, Thi Quan
Le, Thi Kim Chung
Tran, Huy Thinh
Le, Thi Huong
Nguyen, Ngoc Anh
Nguyen, Viet Nhung
Nguyen, Ngoc Hong
Luong, Mai Anh
Le, Thi Thanh Xuan
Powiązania:
https://bibliotekanauki.pl/articles/2020235.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
silicosis
genotype
TNF-α
Vietnam
Wietnam
genotyp
Opis:
The studFigy aims to determine the TNF-α single-nucleotide polymorphism TNF-α (-308) and assess the association of TNF-a(-308) SNP with the risk of silicosis among workers directly exposed to silica dust in Vietnam. A study was undertaken among 78 cases with silicosis and 103 controls without silicosis in Vietnam. Blood samples were collected for genomic DNA extraction from each subject. The phenotyping of TNF-α(-308) was performed using polymerase chain reaction‐based restriction fragment length polymorphism (PCR‐RFLP) and dye termination sequencing. Results: The average exposure time of the case group was slightly higher than that of the control group (12.46 ± 6.732 years vs. 12.09 ± 7.854 years). The majority of genotypes in both silicosis and non-silicosis was GG. When analyzing the concentration of TNF-α in the study participants' blood, it is shown that the average concentration of TNFα in the case group was higher than that in the control group. The genotype AG in the case group was 1.368 times higher than that in the control group. The percentage of all A alleles in the case group with silicosis was 1.342 times higher than the control group without the disease, similar to previous studies. Conclusion: The majority of genotypes in both groups was GG. The average concentration of TNF-α in blood, genotype AG, and the percentage of all A alleles in the case group was higher than that in the control group.
Źródło:
Inżynieria Mineralna; 2021, 2; 459--466
1640-4920
Pojawia się w:
Inżynieria Mineralna
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:
Method of Prediction of the Stream Flows in Poorly Gauged and Ungauged Basins
Autorzy:
Kuzmin, Vadim
Pivovarova, Inna
Shemanaev, Kirill
Sokolova, Daria
Batyrov, Artur
Tran, Ngoc Anh
Dang, DinhKha
Powiązania:
https://bibliotekanauki.pl/articles/123090.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
hydrological prediction
basin
mathematic model
parametrization
ungauged basin
hydrometeorological survey
Opis:
The underlying principles and content of new technology for automated hydrological predictions of poorly gauged and ungauged basins were reviewed herein. Basin classification principles depending on the availability and spatial-temporal discreteness of the observations of meteorological and hydrological variables were proposed. The prediction procedure for large river systems insufficiently covered by hydrometeorological survey was outlined. The prediction methodology for Sông Sê San river basin, which is the left tributary of Mekong river, was tested. The possible options for preliminary calibration and validation of MLCM3 predictive model (Multi-Layer Conceptual Model, 3rd generation), developed within the framework of set task, were described. The software, implementing the streamflow prediction method for ungauged and poorly gauged special basins of large rivers tributaries, was tested.
Źródło:
Journal of Ecological Engineering; 2019, 20, 1; 180-187
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling labor productivity in high-rise building construction projects using neural networks
Autorzy:
Nguyen, Duc Anh
Tran, Dung Quang
Nguyen, Thoan Ngoc
Tran, Hai Hong
Powiązania:
https://bibliotekanauki.pl/articles/2203438.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Labor productivity in building construction has long been a focused research topic due to the high contribution of labor cost in the building total costs. This study, among a few studies that used scaled data that were collected directly from measuring equipment and onsite activities, utilized neural networks to model the productivity of two main construction tasks and influencing factors. The neural networks show their ability to predict the behaviors of labor productivity of the formwork and rebar tasks in a test case of a high-rise building. A multilayer perceptron that had two layers and used sigmoid as its activation function provided the best effectiveness in predicting the relations among data. Among eleven independent factors, weather (e.g., temperature, precipitation, sun) generally played the most important role while crew factors were distributed in the mid of the ranking and the site factor (working floor height) played a mild role. This study confirms the robustness of neural networks in productivity research problems and the importance of working environments to labor productivity in building construction. Managerial implications, including careful environmental factors and crew structure deliberation, evolved from the study when labor productivity improvement is considered.
Źródło:
Archives of Civil Engineering; 2023, 69, 1; 675--692
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical investigation of length to beam ratio effects on ship resistance using ranse method
Autorzy:
Le, Tat Hien
Nguyen, Duy Anh
Tran, Ngoc Tu
Hoa, Nguyen Thi Ngọc
Ngoc, Vu Minh
Powiązania:
https://bibliotekanauki.pl/articles/32917972.pdf
Data publikacji:
2023
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
length-beam ratio
L/B
resistance
hull form
RANSE
Opis:
The paper discusses the length to beam (L/B) ratio effects on ship resistance at three different Froude numbers using unsteady RANSE simulation. First, the JBC ship model was used as an initial hull form for verification and validation of predicted ship resistance results with measured data, and then the influence of the L/B ratio on ship resistance was carried out. Ship hull forms with different L/B ratios were produced from the initial one by using the Lackenby method. The numerical results obtained show the L/B ratio’s effect on ship resistance. Increases of the L/B ratio led to gradual reduction of the total ship resistance and vice versa. Analysis of the changing of the resistance components indicates that the pressure resistance changes are considerably larger than the frictional one. Finally, the paper analyses the difference in the flow field around the hull of the ship with variation of the L/B ratio to fully understand the physical phenomenon in the change of ship resistance at different L/B parameters.
Źródło:
Polish Maritime Research; 2023, 1; 13-24
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study of effect of trim on performance of 12500DWT cargo ship using RANSE method
Autorzy:
Chuan, Tran Quoc
Phuong, Nguyen Kim
Tu, Tran Ngoc
Quan, Mai Van
Anh, Nguyen Duy
Le, Tat-Hien
Powiązania:
https://bibliotekanauki.pl/articles/32891489.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
RANSE
ship performance
trim optimisation
operating condition
ship speed
Opis:
This paper deals with the results of studying the effect of trim on the performance of series cargo ship 12500DWT in full scale at two operating conditions by using the RANSE method. The Body Force Propeller method is used to simulate a rotating propeller behind the ship. The numerical predicted results at the ballast condition were verified and validated with sea trial data. The ship’s engine power curves for different trim conditions at two operating conditions were carried out to produce a data source to evaluate the effect of trim on the performance of the 12500DWT cargo ship. The results indicate that if the ship operates under optimum trim conditions, this can decrease the ship’s engine power in a range from 2.5 to 4.5% depending on different loading conditions and ship speeds. Finally, the paper also provides detailed differences in flow around the ship due to trim variation to explain the physical phenomenon of changing ship performance.
Źródło:
Polish Maritime Research; 2022, 1; 3-12
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-step Homogenization of Poroelastic Properties of a Limestone
Dwu-etapowa homogenizacja właściwości poroelastycznych wapienia
Autorzy:
Trieu, Hung Truong
Nguyen, Ngoc Bien
Pham, Duc Tho
Vu, Minh Ngoc
Do, Ngoc Anh
Nguyen, Sy Tuan
Tran, Nam Hung
Nguyen, Thi Thu Nga
Powiązania:
https://bibliotekanauki.pl/articles/318822.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
oolitic limestone
tow-step homogenization
CSA
poro-elastic properties
differential self-consistent
wapień oolityczny
homogenizacja dwuetapowa
właściwości poroelastyczne
zróżnicowana spójność własna
Opis:
This study aims at deriving the effective poroelastic properties of the oolitic limestones based on the Hashin composite sphere assemblage (CSA) micromechanical theory. The microstructure of oolitic limestones generally exhibits an assemblage of grains (oolites) surrounded by a matrix. Grain and matrix are linked via the interfacial transition zone (ITZ). Pores exist in these three material phases (oolite, ITZ and matrix). A two-step homogenization method is proposed. The first step consists of upscaling the properties of each porous phase (i.e. porous oolite, porous ITZ and porous matrix) in which each phase contains two sub-phases including pore and solid. The differential self-consistent scheme is used for the first step. At the second step, the three different porous constituents (oolite, ITZ and matrix) are assembled in a CSA model. A mathematical analogy between thermoelasticity and poroelasticity is used to obtain the effective poroelastic properties. A comparison between the proposed model and test data on the oolitic limestone from Bourgogne (France) helps to calibrate the model parameters and to highlight the role of ITZ phase.
W artykule, przedstawiono wyniki badań efektywnych właściwości poroelastycznych wapieni oolitowych w oparciu o teorię mikromechaniczną złożonego zespołu kul Hashin (CSA). Mikrostruktura wapieni oolitycznych wykazuje generalnie zbiór ziaren (oolitów) otoczonych matrycą. Ziarno i matryca są połączone za pośrednictwem międzyfazowej strefy przejściowej (ITZ). W tych trzech fazach materiału (oolit, ITZ i matryca) istnieją pory. Zaproponowano dwuetapową metodę homogenizacji. Pierwszy etap polega na zwiększeniu skali właściwości każdej porowatej fazy (tj. Porowatego oolitu, porowatej ITZ i porowatej matrycy), w której każda faza zawiera dwie podfazy: porową i stałą. W pierwszym etapie zastosowano różnicowy schemat samouzgodnienia. Na drugim etapie trzy różne porowate składniki (oolit, ITZ i matryca) są składane w modelu CSA. Matematyczne analogie między termosprężystością a poroelastycznością są wykorzystywane do uzyskania efektywnych właściwości poroelastycznych. Porównanie proponowanego modelu z danymi testowymi dotyczącymi wapienia oolitycznego z Bourgogne (Francja) pomaga skalibrować parametry modelu i podkreślić rolę fazy ITZ.
Źródło:
Inżynieria Mineralna; 2020, 1, 2; 31-39
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies