检索结果-南通市图书馆

Assessing the Impact of Industrial Zones on the Environmental Pollution in Hai Phong’s Coastal Areas, Vietnam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2023年第7期11卷 11-29页

作者： Pham Thi Song Thu doan q.ang tri President Ho Chi Minh’s Vestige in the Presidential Palace Area Ha Noi Vietnam Journal of Hydro-Meteorology Viet Nam Meteorological and Hydrological Administration Ha Noi Vietnam

Pollution in the coastal areas negatively affects biochemical indicators of seawater, human health and marine organisms. Hai Phong is a coastal city of Vietnam with the development of socio-economic activities, representing through an increasing number of industrial zones. This study is to evaluate the pollution of large industrial zones in Hai Phong city using numerical models. The numerical simulation (MIKE 21 SW, FM, ECO Lab) models were applied to simulate the wave propagation, hydraulic regime, water q.ality in coastal Hai Phong area. The MIKE 21 ECO Lab model was used to evaluate sources of waste from the large coastal industrial zones to some aq.aculture zones. The calibration and validation results of wave propagation and the hydrodynamic models were resonably good, with Nash coefficient ranging from 0.65 to 0.90 and a percent bias (PBIAS) from 5.6% to 9.4%. The simulation results of water q.ality and concentration of pollutants (DO, BOD5, COD, TSS, Fe, and Coliform) in 2023 at the aq.aculture locations show that the BOD5, COD, and TSS concentrations were higher than the allowable limits stated in the national technical regulation on surface water q.ality (q.VN 08:2023/BTNMT) and lower than the allowable limits stated in the national technical regulation on marine water q.ality (q.VN 10:2023/BTNMT). The outcomes of this study will provide more information to support managers to come up with a better socio-economic development plan for Hai Phong city to achieve sustainable development.

关键词： Coastal Areas Water q.ality MIKE 21 Industrial Zones Costal Pollution

Application of the AERMOD Model to Evaluate the Health Benefits Due to Air Pollution from the Public Transport Sector in Ha Noi, Viet Nam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2022年第3期10卷 13-33页

作者： Tran Do Bao Trung doan q.ang tri Department of Climate Change Ministry of Natural Resources and Environment Ha Noi Viet Nam Vietnam Journal of Hydrometeorology Viet Nam Meteorological and Hydrological Administration Ha Noi Viet Nam

Fine particulate matter (PM2.5) mainly originates from combustion emissions on-road transportation. Exposure to PM2.5 could be considered one of the primary causes of diseases such as heart attack, stroke, lung cancer, and chronic respiratory, which made it one of the most important co-benefits when evaluating the impact of GHG mitigation measures. This study q.antifies the co-benefit of Ha Noi’s modal shift from private to public means of transport, which are reduced air pollution and extended life expectancy, combining AERMOD model and benefit transfer method. Analytical results show that shifting from motorbike to electric train could be the most beneficial option in term of health co-benefit, compared to the usage of standard buses and BRTs.

关键词： AERMOD Model Air Pollution Health Co-Benefit Ha Noi

On recommendation-aware content caching for 6G:An artificial intelligence and optimization empowered paradigm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2020年第3期6卷 304-311页

作者： Yaru Fu Khai Nguyen doan Tony q.S.q.ek The School of Science and Technology The Open University of Hong Kong(OUHK)KowloonHong KongChina Information Systems Technology and Design Singapore University of Technology and Design487372Singapore

Recommendation-aware Content Caching(RCC)at the edge enables a significant reduction of the network latency and the backhaul load,thereby invigorating ubiq.itous latency-sensitive innovative ***,the effectiveness of RCC strategies is highly dependent on explicit information as regards subscribers’content req.est patterns,the sophisticated caching placement policy,and the personalized recommendation *** this article,we investigate how the potentials of Artificial Intelligence(AI)and optimization techniq.es can be harnessed to address those core issues and facilitate the full implementation of RCC for the upcoming intelligent 6G *** this end,we first elaborate on the hierarchical RCC network ***,the devised AI and optimization empowered paradigm is introduced,whereas AI and optimization techniq.es are leveraged to predict the users’content preferences in real-time situations with the assistance of their historical behavior data and determine the cache pushing and recommendation decision,*** extensive case studies,we validate the effectiveness of AI-based predictors in estimating users’content preference and the superiority of optimized RCC policies over the conventional *** last,we shed light on the opportunities and challenges in the future.

关键词： Artificial intelligence Content caching Optimization techniq.es Recommendation 6G

Cellular signaling in sinecatechins-treated external genital and perianal warts: unraveling the mechanism of action of a botanical therapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virologica Sinica 2015年第3期30卷 214-217页

作者： Harrison P Nguyen Hung q.doan Peter Rady Stephen K Tyring Department of Dermatology Baylor College of Medicine Department of Dermatology University of Texas Houston Health Science Center Center for Clinical Studies

Dear Editor,Derived from green tea leaves,sinecatechins(Veregen)ointment,15%is a topical therapy that is FDA-approved to treat human papillomavirus(HPV)-induced external genital and perianal warts(EGW)in immunocompetent patients aged 18 years and *** two phase 3 trials enrolling over 1,000 participants with EGW,a 16-week treatment regimen with sinecatechins ointment resulted in higher rates of complete clearance of all

关键词： genital papillomavirus clearance older regimen approved signaling transcriptase salient biopsy

Forest characteristics and population structure of Glyptostrobus pensilis, a globally endangered relict species of southeastern China

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2019年第4期41卷 237-249页

作者： Cindy q. Tang Yongchuan Yang Arata Momohara Huan-Chong Wang Hong Truong Luu Shuaifeng Li Kun Song Shenhua q.an Ben LePage Yi-Fei Dong Peng-Bin Han Masahiko Ohsawa Buu Thach Le Huu Dang Tran Minh tri Dang Ming-Chun Peng Chong-Yun Wang Institute of Ecology and Geobotany School of Ecology and Environmental ScienceYunnan UniversityDongwaihuan South RoadUniversity TownChenggong New DistrictKunmingYunnan 650504China The Nature Conservancy Society of Japan Mitoyo Bldg.2F1-16-10 ShinkawaChuo-kuTokyo 104-0033Japan Key Laboratory of Three Gorges Reservoir Region's Eco-Environment Ministry of EducationChongqing UniversityChongqing 400045China Graduate School of Horticulture Chiba University648 MatsudoChiba 271-8510Japan Institute of Botany Yunnan UniversityKunmingYunnan 650091China Southern Institute of Ecology Vietnam Academy o f Science and TechnologyHo Chi Minh CityViet Nam Research Institute of Resource Insects Chinese Academy of ForestryKunmingYunnan 650224China School o f Ecological and Environmental Sciences East China Normal UniversityShanghai 200241China Pacific Gas and Electric Company 3401 Crow Canyon RoadSan RamonCA 94583USA The Academy of Natural Science 1900 Benjamin Franklin ParkwayPhiladelphiaPA 19W3USA

The Chinese water pine Glyptostrobus pensilis is the sole surviving species of the genus Glyptostrobus. It is endemic to southern China, central Vietnam, and eastern Laos, and today it is nearly extinct in the wild. Forest community characteristics and population structure of G. pensilis in China have remained un-known up to now. We investigated six swamp forest stands and analyzed their forest community characteristics (i.e. vertical stratification, species composition, and diversity) and population structure, including the freq.ency distribution of DBH (diameter at breast height) and age-classes as found in Fujian Province, southeastern China. The vertical stratifications of all the forest stands were rather simple. The remaining wild specimens ranged from roughly 15 to some 357 years for an average of ca. 85 years, with only a few individuals less than 20 years old. Compared with the stands and populations of G. pensilis in Vietnam, the taxonomic compositions of the stands in the two regions were different, except for the dominant species-G. pensilis. The Shannon-Wiener index showed the overstory of each stand had much lower diversity (0.26 on average) in Fujian Province than that (1.97 on average) in Vietnam, whereas the diversity indices were about the same (around 2.41) for the understories in the two regions. Furthermore, we discovered 18 G. pensilis seedlings at the study sites in Fujian Province. This discovery demonstrates that G. pensilis regeneration is extremely poor and its populations are declining, although these populations are rela-tively healthier than those in Vietnam.

关键词： Age-class Fujian Province Glyptostrobus Regeneration Relict plant Vietnam

Effect of Meteorological Factors on PM<sub>10</sub>Concentration in Hanoi, Vietnam

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2019年第11期7卷 138-150页

作者： Nguyen Anh Dung Duong Hong Son Nguyen The Duc Hanh doan q.ang tri Department of Science and Technology Ministry of Natural Resources and Environment Hanoi Vietnam Water Resources Institute Ministry of Natural Resources and Environment Hanoi Vietnam Faculty of Environment Hanoi University of Natural Resources and Environment Ministry of Natural Resources and Environment Hanoi Vietnam Vietnam Journal of Hydrometeorology Viet Nam Meteorological and Hydrological Administration Hanoi Vietnam

According to the Ministry of Natural Resources and Environment, Hanoi city is currently facing the increased air pollution, especially particulate matter. This study examines the influence of meteorological factors including temperature, humidity and wind speed on PM10 concentration in Hanoi. The data used in this study include 24-h PM10 concentration data, hourly temperature, humidity and wind speed data in 2018 at three automatic air monitoring stations under Vietnam Environment Administration and Hanoi Natural Resources and Environment Department. The SPSS statistical analysis tools are utilized to analyze the correlation between PM10 concentration and meteorological factors through the Spearman (r) correlation coefficient. Additionally, the Independent-Sample T-Test is also employed to assess the difference in PM10 concentration in the period between dry season (from October to March) and wet season (from May to September). The results show that there is a trend of seasonal variation of PM10 concentration. Specifically, PM10 concentration recorded a higher value in winter and lower in summer. Different correlations between air pollutants and meteorological factors were also observed. PM10 concentration was inversely correlated (r 10 concentration during dry and wetseason. This outcome has confirmed the important role of meteorological factors in the formation of air pollution with large variations in different seasons and geological areas.

关键词： Meteorology Temperature Humidity Wind Speed PM10 Air q.ality

APPLICATIONS OF NUMERICAL MODELLING FOR THE STUDY ON STORM SURGE IN TYPHOON XANGSANE IN THE CENTRAL COAST OF VIETNAM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tropical Cyclone Research and Review 2018年第3期7卷 179-192页

作者： THO DAT TRAN DUC TRUONG DINH q.ANG tri doan q.ANG TIEN TRAN The National Economics University Vietnam Sustainable Management of Natural Resources and Environment Research Group Faculty of Environment and Labour SafetyTon Duc Thang University National Center for Hydrometeorological Forecasting

Understanding impacts of typhoons due to storm surge plays an important role in reducing damage in coastal *** study used the SWAN wave model to simulate the typhoon waves and the SuWAT model to simulate storm surge and inundation caused by Typhoon Xangsane in 2006 which landed in the Central Coast of Vietnam from Nghe An to Phu Yen *** wind-pressure f ield was calculated by the Fujita’s model and reanalysis data were inputted to the SWAN and SuWAT *** simulated results of the typhoon wave showed that Typhoon Xangsane caused 5-7 m height waves in the coastal areas with a radius of 600 *** results of the storm surge combined with the simulations of wind,pressure,wave,and tide in the coastal areas were estimated at 2 *** simulated and calculated results of storm surge and inundation maps will help the decision makers in the Committee for Natural Disaster Prevention and Control to reduce the impacts of natural disasters induced to storm surge in the near future.

关键词： Typhoon Xangsane storm surge SWAN SuWAT

Genetic variation of Leptospira isolated from rats catched in Yogyakarta Indonesia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2015年第9期8卷 698-701页

作者： Hadi Sumanta tri Wibawa Suwarno Hadisusanto Anik Nuryati Hari Kusnanto Center for Environmental Health Engineering and Disease Control Department of Microbiology Faculty of Medicine Universitas Gadjah Mada Department of Biology Faculty of Biology Universitas Gadjah Mada Department of Health Analyst Yogyakarta Health Polytechnic Department of Public Health Faculty of Medicine Gadjah Mada University

Objective: To detect genetic variations among pathogenic Leptospira isolated from rats using 16 S r RNA gen as chronometer. Methods: This is an observational study with cross sectional design. Rats saples were taken in Yogyakarta Special Region of Indonesia. Leptospira in the rats was detected by two methods ie. real time PCR(q.PCR) by using primers correspond to16 S r RNA gene of Leptospira, and standard PCR by using dif erent set of primer correspond to the 16 S r RNA gene of Leptospira. The standard PCR amplicon then subjected for DNA seq.encing. Analysis genetic variation was performed using MEGA 6.2. Software. Results:There were 99 DNA samples from rats included in this study. Detection of Leptospira by using q.PCR revealed 25 samples positive for pathogenic Leptospira, while only 6 samples were able to be detected using standard PCR. The new primer set correspond to 16 S r RNA gene was able to detect specii cally pathogenic Leptospira in the rats. Seq.encing analysis of 6 PCR amplicons showed that the Leptospira which infect the rats catched in Yogyakarta genetically close related with pathogenic Leptospira which were isolated from human, animal, rodents, and environment. Conclusions: It can be considered that rats are the most important vector and reservoir of Leptospira.

关键词： Pathogenic Leptospira 16S rRNA Rats Genetic variation

Dynamic Impact of High-Density Aluminum Foam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 2022年第2期35卷 198-214页

作者： q.Peng J.Xie H.S.Ma X.Ling X.Liu Y.G.Wei LNM Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China School of Engineering and Technology China University of GeosciencesBeijing 100083China College of Engineering Peking UniversityBeijing 100871China

High-density aluminum foam can provide higher stiffness and absorb more energy during the impact Obtaining the constitutive law of such foam req.ires tri-axial tests with very high pressure,where difficulty may arise because the hydrostatic pressure can reach more than 30 *** this paper,instead of using tri-axial tests,we proposed three easier tests-tension,compression and shear to obtain the parameters of constitutive model(the Deshpande-Fleck model).To verify the constitutive model both statically and dynamically,we carried out addi-tional triaxial tests and direct impact tests,*** on the derived model,we performed finite element simulation to study the impact response of the present *** dimensional analysis,we proposed an empirical eq.ation for a non-dimensional impact time the impact time divided by the time req.ired for plastic wave travelling from the impact surface to the bottom surface,to det ermine the deformation charac teristic of the aluminum foam after *** the case with t_(d)≤1,the deformation tends to exhibit a shock-type characteristic,while for the case with t_(d)>5,the deformation tends to exhibit an upsetting-type characteristic.

关键词： High density aluminum Foam Deshpande-Fleck model Finite element method Impact analysis Plastic wave