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81.
Do Thi Nhu Ngoc Ngo Xuan Truong Pham Van Ha Vuong Nhu Luan Le Hoang Anh Pham Chau Thuy Bui Quang Hung Nguyen Thi Nhat Thanh 《Environmental science and pollution research international》2021,28(10):12067-12081
Environmental Science and Pollution Research - The WRF-Chem (Weather Research and Forecasting with Chemistry) model is implemented and validated against ground-based observations for meteorological... 相似文献
82.
Santiago Badillo Tania Patricia Pham Thi Thanh Ha Nadeau Mireille Allard-Massicotte Rosalie Jacob-Vaillancourt Colin Heitz Michèle Avalos Ramirez Antonio 《Environmental science and pollution research international》2021,28(23):29037-29045
Environmental Science and Pollution Research - Composting process of residual organic material generates considerable amounts of liquid leachate which contains high organic load. This waste stream... 相似文献
83.
Hoang Anh Tuan Nižetić Sandro Pham Van Viet 《Environmental science and pollution research international》2021,28(5):4918-4950
Environmental Science and Pollution Research - Currently, the considerable decline in fossil fuel resources and the high rise in vehicle emissions have prompted researchers and governments to... 相似文献
84.
Society's growing interest in environmental issues requires the production of reliable information for policy-makers, stakeholders and society in general. This information must be based on accurate data produced by qualified laboratories and data need to be comparable between numerous laboratories for joint assessments, e.g. in International Conventions. The Marine Environment Laboratories of the International Atomic Energy Agency has been providing Quality Assurance services to laboratories involved in marine radioactivity studies for the past 30 years. This has included training, organization of laboratory intercomparison exercises, production of Reference Materials (RMs) and more recently, production of Certified Reference Materials (CRMs) that comply with relevant ISO standards. Here, the overall process of Certification of Reference Materials is reviewed, past work summarized and future needs of marine radioactivity laboratories briefly discussed. 相似文献
85.
T.T.H. Pham S.K. Brar R.D. Tyagi R.Y. Surampalli 《Journal of environmental management》2010,91(8):1657-1664
Fenton oxidation pretreatment was investigated for enhancement of biodegradability of wastewater sludge (WWS) which was subsequently used as substrate for the production of value- added products. The Response surface method with fractional factorial and central composite designs was applied to determine the effects of Fenton parameters on solubilization and biodegradability of sludge and the optimization of the Fenton process. Maximum solubilization and biodegradability were obtained as 70% and 74%, respectively at the optimal conditions: 0.01 ml H2O2/g SS, 150 [H2O2]0/[Fe2+]0, 25 g/L TS, at 25 °C and 60 min duration. Further, these optimal conditions were tested for the production of a value added product, Bacillus thuringiensis (Bt) which is being used as a biopesticide in the agriculture and forestry sector. It was observed that Bt growth using Fenton oxidized sludge as a substrate was improved with a maximum total cell count of 1.63 × 109 CFU ml?1 and 96% sporulation after 48 h of fermentation. The results were also tested against ultrasonication treatment and the total cell count was found to be 4.08 × 108 CFU ml?1 with a sporulation of 90%. Hence, classic Fenton oxidation was demonstrated to be a rather more promising chemical pre-treatment for Bt - based biopesticide production using WWS when compared to ultrasonication as a physical pre-treatment. 相似文献
86.
Van-Hieu Vu Xuan-Quynh Le Ngoc-Ho Pham Luc Hens 《Environmental science and pollution research international》2013,20(8):5138-5149
Transport is an essential sector in modern societies. It connects economic sectors and industries. Next to its contribution to economic development and social interconnection, it also causes adverse impacts on the environment and results in health hazards. Transport is a major source of ground air pollution, especially in urban areas, and therefore contributes to the health problems, such as cardiovascular and respiratory diseases, cancer and physical injuries. This paper presents the results of a health risk assessment that quantifies the mortality and the diseases associated with particulate matter pollution resulting from urban road transport in Haiphong City, Vietnam. The focus is on the integration of modelling and geographic information system approaches in the exposure analysis to increase the accuracy of the assessment and to produce timely and consistent assessment results. The modelling was done to estimate traffic conditions and concentrations of particulate matters based on geo-referenced data. The study shows that health burdens due to particulate matter in Haiphong include 1,200 extra deaths for the situation in 2007. This figure can double by 2020 as the result of the fast economic development the city pursues. In addition, 51,000 extra hospital admissions and more than 850,000 restricted activity days are expected by 2020. 相似文献
87.
Duong Minh Bui Phuc Duy Le Minh Tien Cao Trang Thi Pham Duy Anh Pham 《International Journal of Green Energy》2020,17(7):382-406
ABSTRACTTime-series and machine-learning methods are being strongly exploited to improve the accuracy of short-term load forecasting (STLF) results. In developing countries, power consumption behaviors could be suddenly changed by different customers, e.g. industrial customers, residential customers, so the load-demand dataset is often unstable. Therefore, reliability assessment of the load-demand dataset is obviously necessary for STLF models. Hence, this paper proposes a novel and unified statistical data-filtering method with the best confidence interval to eliminate unexpected noises/outliers of the input dataset before performing various short-term load forecasting models. This proposed novel data-filtering method, so-called the data pre-processing method, is also compared to other existing data-filtering methods (e.g. Kalman filter, Density-Based Spatial Clustering of Applications with Noise, Wavelet transform, and Singular Spectrum Analysis). By using an SCADA system?-based database of a typical 22kV distribution network in Vietnam, NYISO database, and PJM-RTO database, case studies of short-term load forecasting have been conducted with a conventional ARIMA model, an ANN forecasting model, an LSTM-RNN model, an LSTM-CNN combined model, a deep auto-encoder (DAE) network, a Wavenet-based model, a Wavenet and LSTM hybrid model, and a Wavelet Neural Network (WNN) model, which are to validate the novel and unified statistical data-filtering method proposed. The achieved numerical results demonstrate which the accuracy of the aforementioned STLF models can be significantly improved due to the proposed statistical data-filtering method with the best confidence interval of the input load dataset. The proposed statistical data-filtering method can considerably outperform the existing data-filtering methods. 相似文献
88.
89.
Pham Van Khang Xuan Truong Mai Hiep Hoang Phu Sy Danh Thuong Shen Sida 《毒物与环境化学》2020,102(1-4):124-131
AbstractIn this study, The essential oil of flowers, fruits, and leaves of Thevetia peruviana, which were collected in Vietnam, were being reported for the first time. The essential oil of flowers was extracted by different methods: n-hexane extraction, distillation water, and supercritical CO2 extraction. The compositions of essential oil of different parts of Thevetia peruviana were analyzed by GC-FID and GC/MS systems. Major chemical compositions of essential oil were identified as monoterpenes, sesquiterpenes, terpenoids, and sterol. The activities of total essential oil extracts of the Thevetia peruviana exhibit inhibitory activities against five cancer cell lines. 相似文献
90.
Le Trinh Hai Pham Hoang Hai Tran Anh Dung Luc Hens 《Environment, Development and Sustainability》2010,12(1):103-116
Background Sustainable development (SD) is a common concept. Knowledge and attitudes are essential in the SD process. This study assesses
the knowledge, attitudes, and practices (KAP) of local people about SD. Aim To study the factors that influence the understanding of the concept, contents, and indicators of different aspects affecting
the health and environmental issues. Methods A cross-sectional study was carried out from June to July 2007 among 546 households in the Quang Tri province. Data were
gathered on basis of socio-demographic variables, namely age, gender, education, occupation, income, and region. Chi square
tests and multivariate analysis were performed on the obtained data. The data were cleaned and analysed using SPSS 15.0 for
windows. Results Occupation is related to knowledge, attitude, or practice. Income is related to knowledge or practice. Gender related to
only attitude. Lastly, region is related to attitude or practice. The proportion of wrong understanding about SD is 2.0 times
(95% CI: 1.3; 3.1, p < 0.001) higher than that of the people who have good understanding about it. The rate of willingness to do any related SD
programmes of the people who understanding is 2.1 times (95% CI: 1.4; 3.2, p < 0.001) higher than that of the people who have bad one. Conclusions This study shows that knowledge on sustainability of the local communities is low. Occupation and income influence understanding
of SD more than region, age, gender, and education. Most of the local people who do not understand SD in general, do not want
to participate or act in SD programmes. 相似文献