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Tytuł:
Methods for assessment and testing students’ learning outcomes in cooperative teaching
Metody oceniania i testowania efektów kształcenia studentów w nauczaniu we współpracy
Autorzy:
Nguyen, Thi Thanh
Powiązania:
https://bibliotekanauki.pl/articles/551311.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
assessment and testing methods
cooperative teaching
method of implementation
cooperative behaviors
cooperative learning skills
metody oceniania i testowania
nauczanie kooperatywne
metody realizacji
zachowania kooperatywne
umiejętności kooperatywnego uczenia się
Opis:
This article presents some methods for assessing and testing student learning outcomes in cooperative teaching in order to help lecturers to assess objectively as well as to clearly present the results achieved by various groups and individuals. Understanding the basics of assessment can have a positive impact on every student. It is essential to adjust the methods of assessment to teaching and create incentives that will increase students’ interest in learning
Artykuł prezentuje kilka metod oceniania i testowania efektów kształcenia studentów w ramach nauczania opierającego się na współpracy w grupie. Przykłady metod zaprezentowanych w tekście mogą pomoc wykładowcom w obiektywnym ocenianiu, a także w jasnym prezentowaniu efektów osiąganych przez poszczególne grupy i osoby. Wyjaśnienie podstaw oceniania może wpłynąć pozytywnie na każdego studenta. Podstawą jest dostosowanie metod oceniania do nauczania, a także tworzenie zachęt, które zwiększą zainteresowanie studentów uczeniem się.
Źródło:
Relacje. Studia z nauk społecznych; 2016, 2; 209-215
2543-5124
Pojawia się w:
Relacje. Studia z nauk społecznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparing Shrimp Shell-Derived Chitosan with Rice Husk-Derived Biochar for Efficient Safranin O Removal from Aqueous Solution
Autorzy:
Phuong, Do Thi My
Thao, Nguyen Thi Thanh
Loc, Nguyen Xuan
Powiązania:
https://bibliotekanauki.pl/articles/2202335.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorption
biochar
chitosan
rice husk
Safranin O
shrimp shell
Opis:
In this study, the shrimp shell-derived chitosan was coated onto rice husk-derived biochar to form chitosan/biochar bio-composite beads. The physicochemical properties of biochar (BC) and chitosan/biochar beads (CS@BC) were characterized by BET, SEM-EDX, FTIR, and pHpzc analyses, which were then tested for their capacity to remove Safranin O (SO) from water. In kinetics, the pseudo-second-order model was found to well represent experimental data, indicating the adsorption was mainly a chemical process. The intra-particle diffusion model was not the sole rate-limiting step, because the results did not pass through the origin. In isotherms, both the Langmuir and Freundlich models described well the equilibrium adsorption data. The CS@BC adsorbent showed adsorption capacity at 77.94 mg/g for SO, which is higher than BC adsorbent with 62.25 mg/g (experimental conditions: pH ~ 7.0, dosage = 0.2 g, contact time = 240 min, and temperature = 298 K). The findings revealed that the biochar-loaded chitosan can improve the adsorption capacity of SO. It is predicted that the enhancement in the functional groups (i.e., -NH2 and -OH groups) of CS@BC could contribute to the electrostatic interactions and the complexation between SO and CS@BC, thereby enhancing the Safranin O adsorption from water.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 248--259
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Career Orientation of Students in the Faculty of Mining at Hanoi University of Mining and Geology
Autorzy:
Truong, Thi Hoa
Nguyen, Thuy Quynh
Nguyen, Thi Thanh Tra
Nguyen, Tat Thang
Powiązania:
https://bibliotekanauki.pl/articles/2020954.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
student
profession
career orientation
Faculty of Mining
studenci
kariera
Wydział Górniczy
Opis:
Career orientation has become significant in Vietnamese education recently. To students of the Mining Faculty of Hanoi University of Mining and Geology, this issue is more important as society changes its acceptance of mining. The research uses investigation, interview, and observation methods for 205 students to see their career orientation. The performance is on the following criteria: 1) Career choice based on individual interests, abilities, personalities, career values; 2) Understanding of the profession in aspects of quality and capacity, workplace, future working environment, the development trend, etc.; 3) The suitability of the profession with individual interests, abilities, personality, and values of the profession during the study; 4) Study plans to meet industry requirements; 5) Self-development plans in the future career. Research results show that the majority of students have the right and appropriate career. These students have clear and positive motivations and goals in the learning process. Only a few students have not determined the proper position in the profession due to their emotions, which are not stable and oriented.
Źródło:
Inżynieria Mineralna; 2021, 2; 555--566
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:
Research of Building the Reasonable Mixing Ratio between Waste Rock and Fly Ash as Backfill Material in Mongduong-Cocsau Area, Quang Ninh, Vietnam
Autorzy:
Nguyen, Phi Hung
Nguyen, Cao Khai
Nguyen, Thi Kim Thanh
Powiązania:
https://bibliotekanauki.pl/articles/27323277.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
waste rock
fly ash
shrinkage rate
pipeline transportation capacity
górnictwo
transport
rurociągi
Wietnam
Opis:
The coal mining industry in Quang Ninh province is primarily focused on serving thermal power plants which has resulted in a substantial amount of waste rock and ash. This way has not only narrowed the used land but also had a negative impact on the environment. However, the economic development plan for the province until 2030 emphasizes the development of a greener economy. Therefore, balancing between economic growth and environmental protection is one of the significant challenges of this province. To solve the problem of waste rock and ash dumps, some methods have been proposed. It tends to use waste materials for backfilling the underground mines, this can help to minimize the bad impact on the environment. Additionally, Another solution is to handle the waste in abandoned mining areas, or use them as construction materials. These ways are expected to partially reduce the bad effects of waste rock and ash dumps on the environment. In the world, there are many studies on filling using waste rock and fly ash, but in Vietnam this issue is quite new. In order to turn waste rock and fly ash into filling materials, the article researches on a laboratory scale, the ability of transportation in hydraulic pipelines, level of the water separation and shrinkage of mixtures of rock and fly ash in the Mong Duong – Coc Sau area with the different proportions. The results of the experiments show that the area has appropriate mixing ratio as 70–73% of waste rock and 30–27% of fly ash, this ratio satisfies the transportation conditions in the pipeline and the shrinkage rate of 8, 8–12.3%. The indicators in experiments show that it is able to take waste rock into mined underground area to fill, which prevents displacement of strata from mining, protects the underground water flow, and also reduces negative impact of waste rock on environment.
Źródło:
Inżynieria Mineralna; 2023, 2; 257--265
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research the Integration of Geodetic and Geotechnical Methods in Monitoring the Horizontal Displacement of Diaphragm Walls
Autorzy:
Pham, Quoc Khanh
Tran, Ngoc Dong
Nguyen, Thi Kim Thanh
Pham, Van Chung
Powiązania:
https://bibliotekanauki.pl/articles/2020165.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
deformation monitoring
diaphragm wall
engineering surveying
soft ground
deformacje
monitoring
grunt
Opis:
This article investigates the integration of geodetic and geotechnical methods for monitoring the horizontal displacement of diaphragm walls. The results show that when the horizontal displacement is measured by the geotechnical method using an inclinometer sensor, the center point at the bottom of the guide pipe is usually chosen to be the origin to calculate displacements of the upper points. However, it is challenging to survey the bottom point for checking its stability directly. If this bottom point moves, the observation results will be incorrect. Thus, the guide pipe must be installed in the stable rock layer. But in the soft ground, this rock layer locates more deeply than the diaphragm walls, so the guide pipe cannot be laid out at the required location. Geodetic methods can directly observe the displacement of the center point on the top of the guide pipe with absolute displacement values at high accuracy. Because the displacements of observation points are determined at stable benchmarks, these values are considered the pipe's displacement. Thus, an integrated solution allows the center point on the top of the pipe to be the origin to calculate the displacements of different points located inside the diaphragm wall. Then, the calculated values are calibrated back to the inclinometer observed values to achieve highly reliable displacement, which reflects the moving of diaphragm walls. An experiment integrating the geodetic and geotechnical methods is conducted with an observation point at a depth of 20 meters at a construction site in Ho Chi Minh city. The deviations of the top point that are observed by the two methods are -4.37 millimeters and -3.69 millimeters on the X-axis and the Y-axis, respectively. The corrected observed results prove that the integrated solution has a good efficiency in monitoring the horizontal displacement of diaphragm walls. The bottom point observed by an inclinometer is unconfident enough to choose to be a reference point.
Źródło:
Inżynieria Mineralna; 2021, 2; 331--340
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Doi moi – zmiany społeczno-ekonomiczne w Wietnamie: ich źródła, istota i rezultaty
Doi moi – social and economic changes in Vietnam: their sources, meaning and results
Autorzy:
Thi Thanh Thuy, Nguyen
Powiązania:
https://bibliotekanauki.pl/articles/2022682.pdf
Data publikacji:
2009-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Opis:
The article focuses on the modernization of the Vietnamese socio-economic system according to the reform program known as „doi moi” (renovation). After presentation of the economic systems of the South Vietnam and the Democratic Republic of Vietnam until 1976, the author describes the economic situation of the country after unifi cation. She points that efforts made to integrate two completely different systems were unsuccessful and caused the social and economic crisis, which reached its peak in the mid-1980’s. To overcome the crisis, Vietnam launched in 1986 the political and economic campaign of reforms to facilitate the transition from the centralized socialist economy to the socialist-oriented market economy. Doi Moi combined government planning with free-market incentives and encouraged the establishment of private businesses and foreign investment, including foreign-owned enterprises. The economic reforms that introduced market forces in Vietnam resembled those initiated earlier in China. As the result of the doi moi, the economic situation in Vietnam began changing gradually: 1. The period 1989–1992 was a turning point; gradual reforms staved off the total collapse while maintaining the support of society. 2. In 1993–1997 increase in export and foreign investments resulted in the rapid development of economy. 3. After 1997 East Asian Financial Crisis the government control of the economy and the nonconvertible currency has protected Vietnam from more serious consequences. 4. By the beginning of the 21st century the doi moi has managed to transform Vietnamese economy into the export-oriented one – the success of the reforms was evident. The socio-economic achievements of Vietnam consist of the following: 1. privatization, 2. openness in trade and investment as well as integration of the domestic economy with the regional and world economies; 3. macro-economic, social and political stabilization.
Źródło:
Azja-Pacyfik; 2009, XII; 71-99
1643-692X
Pojawia się w:
Azja-Pacyfik
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determine the Scope of Influence and Impact Due to Noise from Wind Turbines During the Operation of Wind Power Plant Project No. 3 – Soc Trang Province
Określenie zakresu oddziaływania turbin i oddziaływania hałasu z turbin wiatrowych podczas eksploatacji elektrowni wiatrowej projekt nr 3 – prowincja Soc Trang
Autorzy:
Nguyen, Hieu Minh
Thanh, Huong Nguyen Thi
Powiązania:
https://bibliotekanauki.pl/articles/2172074.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
wind power
noise
environmental impact
wind power plant project No. 3 - Soc Trang province
energetyka wiatrowa
hałas
oddziaływanie na środowisko
wind power plant project No. 3 - Soc Trang province Vietnam- (miasto Ho Chi Minh, Wietnam)
Opis:
Facing climate change, global warming and the depletion of fossil resources such as coal, oil, etc., the development of clean energy sources has become a global trend. Clean energy sources are being exploited and strongly developed globally today, including: solar energy, wind energy, geothermal energy, ocean wave energy, geothermal energy, biomass energy . Vietnam is located in the tropical monsoon climate, with a coastline stretching over 3,000 km, so the potential for wind energy development in Vietnam is extremely large, attracting a lot of investment in wind power projects in Vietnam. current and future, including wind power plant project No. 3 – Soc Trang province. So far, we have only mentioned the benefits and clean, renewable aspects of wind power, but few have mentioned the environmental and human health impacts of wind power plants, especially noise during operation. The paper uses WindPro software 3.1.597 to determine the extent of influence caused by noise emitted by wind turbines during the operation of wind power plants, thereby assessing its impacts on people's health. local people living around the project area and propose remedial measures
W obliczu zmian klimatu, globalnego ocieplenia i wyczerpywania się zasobów kopalnych, takich jak węgiel, ropa naftowa itp., rozwój czystych źródeł energii stał się światowym trendem. Czyste źródła energii są obecnie eksploatowane i silnie rozwijane na całym świecie, w tym: energia słoneczna, energia wiatru, energia geotermalna, energia fal oceanicznych, energia geotermalna, energia biomasy. Wietnam położony jest w tropikalnym klimacie monsunowym, z linią brzegową rozciągającą się na ponad 3000 km, więc potencjał rozwoju energetyki wiatrowej w Wietnamie jest niezwykle duży, co przyciąga wiele inwestycji w projekty wiatrowe w kraju. Przykładem omawianym a artykule jest elektrownia wiatrowa nr 3 – prowincja Soc Trang. Jak dotąd wspomnieliśmy tylko o korzyściach i czystych, odnawialnych aspektach energii wiatrowej, ale niewielu wspomniało o wpływie elektrowni wiatrowych na środowisko i zdrowie ludzi, a zwłaszcza emisji hałasu podczas pracy. W artykule wykorzystano oprogramowanie WindPro 3.1.597 do określenia stopnia oddziaływania hałasu emitowanego przez turbiny wiatrowe podczas pracy elektrowni wiatrowych, oceniając tym samym jego wpływ na zdrowie ludzi, lokalnych mieszkańców mieszkających w pobliżu obszaru objętego projektem i zaproponować środki zaradcze.
Źródło:
Inżynieria Mineralna; 2022, 2; 141--144
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theory Y in Modern Management: Advantages, Disadvantages, and the Relationship with Theory X
Autorzy:
Nguyen, Thanh Ha
Nguyen, Thi Thank Huyen
Nguyen, Thi Lan Huong
Powiązania:
https://bibliotekanauki.pl/articles/27323273.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
theory Y
theory X
management
strategy
organization
zarządzanie
strategia
organizacja
Opis:
This essay delves into the concept of Theory Y, one of the hallmark relationship management principles of the 20th century introduced by Douglas McGregor in his influential book "The Human Side of Enterprise" (1960). Theory Y assumes that employees are self-motivated, seek responsibility, and do not dislike work. The essay explores the advantages and disadvantages of Theory Y, highlighting its potential in nurturing creativity and maintaining employee satisfaction, but also addressing its limitations in certain situations. It examines successful examples of Theory Y implementation in companies like Facebook and Google, as well as the potential drawbacks such as freedom abuse and lack of organizational control. Additionally, the essay discusses the relationship between Theory Y and its counterpart, Theory X, which represents a more traditional, directive management style. By examining both theories, the essay emphasizes the importance of carefully considering and adapting management approaches based on the specific context and needs of an organization.
Źródło:
Inżynieria Mineralna; 2023, 2; 203--204
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rice Growth, Grain Zinc, and Soil Properties under Saline Irrigation Conditions
Autorzy:
Thi, Lan Phuong Dinh
Hang, Nga Nguyen Thi
Nguyen, Hoa Thanh
Nguyen, Lien Thi
Powiązania:
https://bibliotekanauki.pl/articles/1955578.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
salt stress
rice growth
nutrient zinc
irrigation water
salt accumulation
Opis:
This research evaluated rice growth and yield as well as Zn accumulation in both soil and grain under saline water irrigation conditions. The experiment consisted of a series of pots containing rice plants and paddy soil, with the application of irrigation treatments of five different salinity levels (1.5, 2, 3, 4, and 5‰ with a drip irrigation system). The results show that the salinity accumulation levels in soil can increase by up to 2.8‰ following the application of 5‰ salinity irrigation water during the development stages. Besides, this study also aimed to evaluate the influences of saline water irrigation on the observed rice yields, plant height, leaf length, and leaf width. In the results, irrigation with 3‰ saline water reduced potential rice yield by 58.6% and the length of rice leaves by one-third. Higher salinity of 4‰ in the irrigation water produced only 24% of average potential productivity, and 5‰ water salinity resulted in no yield. Furthermore, salt stress limited the mobile Zn content in paddy soil, reducing the Zn accumulation in grains by between 36.27% and 83.21%. Thus, the study shows that controlling salinity in irrigation water management is essential for controlling the yield and nutrient Zn content in rice grains.
Źródło:
Journal of Ecological Engineering; 2021, 22, 9; 59-70
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development
Autorzy:
Thanh, Hoa Nguyen
Nguyen, Lien
Lan, Phuong Dinh Thi
Powiązania:
https://bibliotekanauki.pl/articles/123109.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
photovoltaics
electrocoagulation
copper
Box-Behnken design
energy consumption
lithium battery
sustainable development
Opis:
This research aims at illustrating the optimal functions of removing copper ions in aqueous solution by means of the electrocoagulation process in which portable solar power generators are used as renewable energy. A solar photovoltaic cell (PV), producing approximately 48A current intensity for 4-7 h per day, was sufficient to charge the lithium batteries completely during the day. This system was connected directly to the electrocoagulation tank. The Box-Behnken design (BBD) was applied to evaluate three effects of process factors: current density, the dose of electrolyte (NaCl), and application time. The results showed that an optimal efficiency of 99.01% Cu removal plus an energy savings of 1.039 kWh/m3 were obtained at a current density of 4 A/m2, the dosage of NaCl (electrolyte) of 1.87 g/L, and electrolysis time of 10 min. The chemical components of the sludge produced under these optimized conditions were determined by means of EDX. It was illustrated that the copper ions were the main elements of sludge, and nonhazardous compounds were contained. The PV-lithium battery system is considered to be an efficient alternative energy source toward sustainable development.
Źródło:
Journal of Ecological Engineering; 2019, 20, 7; 103-111
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impacts of Financial Inclusion on Economic Development: Cases in Asian‑Pacific Countries
Wpływ włączenia finansowego na rozwój gospodarczy: przykłady krajów Azji i Pacyfiku
Autorzy:
Van, Dinh Thi Thanh
Linh, Nguyen Ha
Powiązania:
https://bibliotekanauki.pl/articles/632962.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Azja
konto
bankomaty
bank
kredyt
rozwój gospodarczy
włączenie finansowe
Asia
account
ATMs
credit
economic development
financial
inclusion
Opis:
Działania na rzecz włączenia finansowego mają na celu zapewnienie wszystkim podmiotom funkcjonującym w gospodarce dostępu do odpowiednich usług finansowych i możliwości ich efektywnego wykorzystania. Zwiększenie włączenia finansowego stało się poważnym problemem zarówno dla krajów rozwiniętych, jak i rozwijających się. Istnieje wiele wskaźników włączenia finansowego, z których najbardziej podstawowym jest posiadanie konta w instytucji finansowej. Niniejszy artykuł ma na celu ocenę wpływu wskaźników włączenia finansowego na rozwój gospodarczy. Wyniki badań pokazują, że istnieją korelacje między dużą liczbą oddziałów banków, bankomatów, kredytu krajowego w sektorze prywatnym a wzrostem tempa rozwoju gospodarki. Rozwój ten umożliwi wzrost poziomu życia ludności. W artykule przedstawiono także zalecenia dla rządów krajów rozwijających się służące zwiększeniu włączenia finansowego.
Financial inclusion efforts seek to ensure that all members of an economy can have access to and effectively use appropriate financial services. Improving financial inclusion has become a significant concern for developed and developing countries alike. There are many indicators of financial inclusion, the most elementary of which includes having an account in a financial institution. This paper will evaluate the impact of indicators of financial inclusion on economic development. The result shows that correlations exist between large numbers of bank branches, ATMs, domestic credit in the private sector and the increased rate of development in the economy. People will gain a more prosperous life due to this development. The paper also provides recommendations for the governments of developing countries to improve financial inclusion.
Źródło:
Comparative Economic Research. Central and Eastern Europe; 2019, 22, 1; 7-16
1508-2008
2082-6737
Pojawia się w:
Comparative Economic Research. Central and Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Use and Potential Impacts of Pesticides in Chili Farming in the Thanh Binh District, Dong Thap Province, Vietnam
Autorzy:
Mi, Le Thi Diem
Giao, Nguyen Thanh
Powiązania:
https://bibliotekanauki.pl/articles/2173321.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
frequency
chili farming
potential risk
pesticides
Dong Thap province
Opis:
The study aimed to evaluate the current status and potential risks of pesticide use of 23 chili growing households in the Thanh Binh district, Dong Thap province, Vietnam. The result shows that farmers used a total of 40 commercial pesticide names with 43 active ingredients, of which two active ingredients, i.e. Benomyl and Fipronil, were banned. The frequency of pesticide spraying for chili protection averaged at 8.93 times/crop, for weed control at 1.83 times/crop, for pests at 12.43 times/crop, for disease control at 14.48 times/crop and for chili growth promoting at 4.82 times/crop. Farmers sprayed pesticides with higher doses than recommended on the labels when pests and diseases occurred on chili farm. The active ingredients in powder and liquid pesticides of Mancozeb, Metalaxyl, Propined, Difenoconazole, Abamectin and Azoxystrobin have been frequently used with estimated concentrations of 5023±3886.36, 337.71±237.50, 4093.92±3628.57, 289.27±264.73, 31.60±29.02 and 652.57±468.35 g/L/ha, respectively. The predicted amounts of ineffective use of such pesticides as Benomyl, Cypermethrin, Fosetylaluminium, Propiconazole, Tebuconazole, Buprofezin, Chlorfenapyr and Difenoconazole, could pose great risks to the environment and humans. Burning is the main method chosen by chili farmers in the treatment of pesticide packaging after use. The study suggests local environmental managers should train farmers in the use and management of pesticide wastes more appropriately.
Źródło:
Journal of Ecological Engineering; 2022, 23, 8; 1--11
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium Immobilization in the Rice – Paddy Soil with Biochar Additive
Autorzy:
Thi, Khac Vu
Lan, Phuong Dinh Thi
Hang, Nga Nguyen Thi
Thanh, Hoa Nguyen
Powiązania:
https://bibliotekanauki.pl/articles/2086382.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Cd
cadmium
soil contamination
rice grain
cadmium accumulation
biochar
straw
Opis:
Cadmium (Cd) is toxic for humans, but its effects on the yield and quality of rice under contaminated irrigation conditions remain uncertain. In this study, paddy soils in the Red River Delta (Vietnam) were selected for experiments with the purpose of understanding the effects of Cd contaminated irrigation water on growth, yields, and grain Cd accumulation. In addition, biochar was produced from rice husk (BRH) and rice straw for preventing Cd infiltration into rice was also studied in this experiment. A field experiment was established with applicated BRH and straw into polluted paddy soil, as a result the Cd content in grains reduced significantly. The Cd contaminated soil was added to the BRH and rice straw (RS) with six ratios, including: (1) RS 2.5%, (2) BRH 2.5%, (3) RS-BRH: 1.25–1.25%, (4) RS 5.0%, (5) BRH 5.0%, (6) RS-BRH: 2.5–2.5%, (w:w). Besides, three content levels 0.01–0.05–0.5 mg/L of Cd in irrigation water were applied throughout crop season. The results showed that the Cd accumulation in rice was in the following order: roots > stems > seeds. With 3 contaminated irrigation levels which were applied, the Cd concentrations of 0.05 mg/L and 0.5 mg/L affected plant height and yield. However, the Cd content in grains under contaminated soil condition can be controlled from 82.47–83.94% by applying a BRH ratio from 2.5–5% (w:w).
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 85--95
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of a Mobile Application-Based Intervention to Improve Knowledge and Practice Regarding Silicosis Among High-Risk Workers of Dust Exposure in a Northern Province of Vietnam
Autorzy:
Nguyen, Thi Thu Huyen
Ta, Thi Kim Nhung
Pham, Thi Quan
Nguyen, Thanh Thao
Nguyen, Ngoc Anh
Nguyen, Thi Lien Huong
Le, Thi Huong
Luong, Mai Anh
Le, Thi Thanh Xuan
Powiązania:
https://bibliotekanauki.pl/articles/27323251.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
knowledge
practice
workers
silicosis
mobile application
effectiveness
praca
aplikacja mobilna
Wietnam
Opis:
Objectives: to analyze changes in knowledge and practices regarding silicosis in groups of workers at high risk of silicosis before - after an intervention. Methods: The study was conducted from 2018 to 2019 based on structured questions related to knowledge and practices of silicosis of workers directly exposed to silica dust in a Northern province of Vietnam. The mobile app-based intervention was applied to steel workers, then compared with ironworkers in improvements in silicosis knowledge and practices. Results: Significant changes in the intervention group related to workers' knowledge about the signs suggestive of silicosis, disease consequences, measures to reduce the risk of silicosis, and participation in annual occupational disease examinations were reported. Conclusion: Mobile applicationbased interventions could improve silicosis knowledge and practice among workers at high risk of exposure to silica dust.
Źródło:
Inżynieria Mineralna; 2023, 2; 295--302
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 41

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