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Occurrence of emerging flame retardants from e-waste recycling activities in the northern part of Vietnam

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Emerging Contaminants 2016年第2期2卷 58-65页

作者： Masayuki Someya Go Suzuki Alin C.Ionas Nguyen Minh Tue Fuchao Xu Hidenori Matsukami Adrian Covaci le huu Tuyen Pham Hung Viet Shin Takahashi Shinsuke Tanabe Hidetaka Takigami Tokyo Metropolitan Research Institute for Environmental Protection 1-7-5 Shinsuna KotoTokyo 136-0075Japan Center for Material Cycles and Waste Management Research National Institute for Environmental Studies(NIES)16-2 OnogawaTsukuba 305-8506Japan Toxicological Centre University of AntwerpUniversiteitsplein 12610 WilrijkBelgium Center for Marine Environmental Studies Ehime University2-5 Bunkyo-choMatsuyama 790-8577Japan Centre for Environmental Technology and Sustainable Development Hanoi University of Science334 Nguyen TraiHanoiViet Nam

This study investigated the contamination status of 21 emerging flame retardants(FRs)in soils(n=32)and river sediments(n=8)from an e-waste recycling(EWR)site in the northern part of *** analyzed FRs,higher levels of decabromodiphenyl ethane(DBDPE)(NDe4200 ng/g dw),1,2-bis-(2,4,6-tribromophenoxy)ethane(BTBPE)(NDe350 ng/g dw)and Dechlorane Plus isomers(DPs)(NDe65 ng/g dw)were found in soils near EWR workshops and open burning *** highest concentrations of DBDPE(20 ng/g dw),BTBPE(5.7 ng/g dw)and DPs(6.7 ng/g dw)were also detected in sediments collected from the middle of the EWR *** levels decreased concomitantly with increasing distance from the EWR *** results indicate that these FRs were released to the surrounding environment from improper recycling activities,such as manual dismantling of devices and open burning of ***,the estimated daily intakes of those FRs via soil ingestion were approximately ten times higher for children than *** our knowledge,this is a first comprehensive study on characterization of soil and sediment contamination by a series of emerging FRs at an EWR site in Vietnam.

关键词： Emerging flame retardants e-waste Soil Sediment Vietnam

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30多年来越南革新事业的成就、经验与教训

毛泽东邓小平理论研究 2019年第10期 98-101,F0003页

作者：黎有义潘金娥中国社会科学院马克思主义研究院

在越南共产党领导下,1986年12月召开的越共六大开启了越南革新进程,至今已经走过30多年。在过去的30多年里,越南在建设社会主义和捍卫社会主义祖国的道路上取得了巨大的历史性成就。与此同时,为使国家快速、可持续发展,还有许多重大而... 详细信息

在越南共产党领导下,1986年12月召开的越共六大开启了越南革新进程,至今已经走过30多年。在过去的30多年里,越南在建设社会主义和捍卫社会主义祖国的道路上取得了巨大的历史性成就。与此同时,为使国家快速、可持续发展,还有许多重大而复杂的问题需要解决,有诸多不足和弱点需要克服。总结30多年来革新的成就和不足,经验教训主要有:必须坚持独立自主和社会主义的目标,坚持创造性地运用和发展马克思列宁主义;必须始终贯彻"以民为本"的观点;尊重客观规律;妥善处理好独立自主与积极主动融入国际之间的关系;加强党的建设和整顿党,提高党的领导能力和战斗力,等等。

关键词：越南革新事业成就经验教训

Integrated Coastal Flood Risk Management as a Means to Build Resilient Communities

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Journal of Hydraulic Engineering 2016年第1期2卷 52-59页

作者： Huynh Thi Lan Huong Nguyen Mai Dang W. Grabs le huu Ti M. Marchand Institute of Meteorology Hydrology and Climate Change (IMHEN) Viet Nam Water Resources University Viet Nam Associated Programme on Flood Management World Meteorological Organization Federal Institute of Hydrology Germany Deltares the Netherlands

There is a clear trend in the increase of damages and loss of lives and livelihoods in coastal areas as a result of rapid increase in coastal populations, and overall socio-economic development in coastal regions resulting in an increase in vulnerability of populations exposed to coastal floods and exposed infrastructure. Coastal flooding as a result of i.e. storm surges are difficult to predict and cannot be prevented, however there are means to apply integrated flood risk management approaches aiming to reduce the impact of coastal floods. A measure of the effectiveness of such approaches is the awareness and response of coastal communities to coastal flood risks. The paper introduces best practices and methods to lower coastal flood risk at the level of provinces, districts and the community level. This includes advances in coastal flood forecasting and early warning practices, improvement of institutional preparedness and integrated flood management practices as well as measures at the community level aiming to strengthen their resilience to coastal floods. The paper provides a showcase for the historical development and achievements to pave ways for the eventual implementation of a pilot project on integrated flood risk management in coastal areas in central Viet Nam.

关键词： Coastal flood management communities integrated flood management resilience Viet Nam.

Sustainable Construction --An International Comparison of Civil Engineering Students

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Journal of Civil Engineering and Architecture 2012年第12期6卷 1648-1653页

作者： Thanh Trung le Chris Ian Goodier Hanh huu Pham Marios N. Soutsos Kien Ton Tong School of Civil and Building Engineering Loughborough University Leicestershire LE112NS UK Department of Building Materials National University of Civil Engineering (NUCE) Hanoi 111110 Vietnam School of Planning Architecture and Civil Engineering Queen's University Northern Ireland BT9 5AG UK

Sustainable construction in the future will be influenced significantly by the beliefs and actions of civil engineering students studying at university today. A comparative investigation of the appreciation and attitudes regarding sustainable construction of civil engineering students at The NUCE （National University of Civil Engineering） in Vietnam, and the Universities of Loughborough and Liverpool in the UK were therefore conducted. Results indicate that students at all three universities appreciate the importance of the development of sustainable construction and have positive attitudes with regards to sustainability. Construction design and appropriate use of materials were two issues generally considered the most important with regards to sustainability, but were also thought to be adequately covered on the courses in all three institutions.

关键词： Sustainable construction education sustainability civil engineering Vietnam UK.

Rapid and efficient characterization of cervical collagen orientation using linearly polarized colposcopic images

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Journal of Innovative Optical Health Sciences 2023年第5期16卷 21-31页

作者： Cat Phan Ngoc Khuong Dung Nguyen huu Quang Hai Pham Thanh Long Nguyen Quynh Nguyen Ngoc Duc le Huynh Tien Tran Van Tu Ly Anh Department of Applied Physics Ho Chi Minh City University of Technology 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City 700000Vietnam Quality Management Department Tu Du Hospital 284 Cong QuynhDistrict 1 Ho Chi Minh City 700000Vietnam Department of Biomedical Engineering Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4Ho Chi Minh City 700000Vietnam Faculty of Science and Technology Jean Monnet University 11 Rue du Docteur Annino Saint Etienne 42000France

Collagen provides tissue strength and structural *** fication of the orientated dispersion of collagen fibers is an important factor when studying the mechanical properties of the *** this study,for the first time,a new method for rapid characterization of the collagen fiber orientations of the cervix using linearly polarized light colposcopy is presented.A total of 24 colposcopic images were captured using a cross-polarized imaging system with white leD light *** the preprocessing stage,the Red channel of the RGB image was chosen,which contains no information of the blood vessels because of the low-absorption of blood cells in the red ***,which is an ImageJ plug-in,was used to estimate the local orientation of the collagen *** result shows that in the nonpregnant cervix,the middle zone(Zone 2)has circumferentially aligned collagen fibers while the inner zone(Zone 1)has randomly *** collagen fiber dispersion in Zone 2 is much smaller than that in Zone 1 at all four quadrants region(anterior,posterior,left,and right quadrant).This new analysis technique could potentially combine with diagnostic tools to provide a quantitative platform of collagen fibers in the clinic.

关键词： Cervix collagen fibers collagen orientation coherency cross-polarized imaging colposcopy

Novel CagA ELISA exhibits enhanced sensitivity of Helicobacter pylori CagA antibody

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World Journal of Gastroenterology 2017年第1期23卷 48-59页

作者： Yuichi Matsuo Yasutoshi Kido Junko Akada Seiji Shiota Tran Thanh Binh Tran Thi Huyen Trang Ho DQ Dung Pham huu Tung Tran Dinh Tri Ngo P Minh Thuan le Quang Tam Bui Chi Nam Vu Van Khien Yoshio Yamaoka Department of Environmental and Preventive Medicine Oita University Faculty of Medicine Department of General Medicine Oita University Faculty of Medicine Department of Endoscopy Cho Ray Hospital Department of Molecular Biology 108 Military Central Hospital Department of Endoscopy Daklak Hospital Department of Endoscopy Lao Cai Hospital Department of Hepatogastroentrology 108 Military Center Hospital Department of Medicine-Gastroenterology Baylor College of Medicine and Michael E.De Bakey Veterans Affairs Medical Center

AIMTo develop a novel Helicobacter pylori (H. pylori) CagA antibody enzyme-linked immunosorbent assay (ELISA) suitable for detecting serum anti-CagA antibodies with high *** East Asian-type CagA protein was purified and immobilized for ELISA. Serum samples from 217 Vietnamese individuals (110 H. pylori-infected and 107 uninfected individuals) were applied. Conventional ELISA from Western-type CagA and our East Asian-type CagA ELISA were evaluated by comparing 38 subjects with the Western-type genotype and 72 subjects with the East Asian-type cagA genotype. Histological scores of the gastric mucosa were determined using the updated Sydney System to examine the relationship with anti-CagA antibody *** 70-100 kDa fragments were immobilized on the ELISA plate. In ROC analysis, the area under the curve of our East Asian-type CagA ELISA was comparable to that of conventional CagA ELISA. The sensitivity of the two ELISAs differed depending on the cagA genotype. The sensitivity of East Asian-type CagA ELISA was higher for subjects infected with East Asian-type cagA H. pylori (P < 0.001), and the sensitivity of the conventional CagA ELISA tended to be higher for subjects infected with Western cagA H. pylori (P = 0.056). The titer of anti-CagA antibody tended to correlate with monocyte infiltration scores (r = 0.25, P = 0.058) and was inversely correlated with H. pylori density (r = -0.26, P = 0.043).CONCLUSIONThe novel ELISA is useful to detect anti-CagA antibodies in East Asian countries, and the titer may be a marker for predicting chronic gastritis.

关键词： Helicobacter pylori cagA genotype Anti-CagA antibody Enzyme-linked immunosorbent assay Inflammation Gastritis

Compensation of Zn substitution and secondary phase controls effective mass and weighted mobility in In and Ga co-doped ZnO material

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Journal of Materiomics 2021年第4期7卷 742-755页

作者： Oanh Kieu Truong le Anh Tuan Thanh Pham Ngoc Kim Pham Trang Huyen Cao Pham Truong huu Nguyen Dung Van Hoang Hanh Kieu Thi Ta Dai Cao Truong Hoa Thi Lai Thuy Dieu Thi Ung Vinh Cao Tran Thang Bach Phan aboratory of Advanced Materials University of ScienceHoChiMinh City700000Viet Nam Vietnam National University HoChiMinh City700000Viet Nam Faculty of Physics and Engineering Physics University of ScienceHoChiMinh City700000Viet Nam Faculty of Materials Science and Technology University of ScienceHoChiMinh City700000Viet Nam Center for Innovative Materials and Architectures(INOMAR) HoChiMinh CityViet Nam Institute of Materials Science Vietnam Academy of Science and TechnologyHanoi100000Viet Nam

Conductivity s and thermal conductivity k are directly related to carrier concentration while Seebeck coefficient S is inversely proportional to carrier ***,improving thermoelectric(TE)performance is ***,the first-time analysis of secondary phase-controlled TE performance in terms of density-of-state effective mass m*d,weighted mobility mw and quality factor B is discussed in ZnO *** results show that the secondary spinel phase Ga2O_(3)(ZnO)9 not only impacts on k but also on s and S at high temperature,while the effect of carrier concentration seem to be dominant at low *** the high-spinel-segregation sample,a compensation of dopant atoms from the spinel to substitutional sites in the ZnO matrix at high temperature leads to a low decreased rate of temperaturedependent m**** compensation process also induces a band sharpening,a small mw reduction,and a large B *** a result,In and Ga co-doped ZnO bulk with the highest spinel segregation achieves the greatest PF improvement by 112.8%,owing to enhanced Seebeck coefficient by 110%as compared to the good Zn-substitution sample.

关键词： Thermoelectrics In and Ga co-Doped ZnO Secondary phase Zn substitution DOS effective Mass Weighted mobility

Determination of the Pore Water Velocity Using a Salt Tracer Combined with Self-Potential Measurements

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Journal of Geoscience and Environment Protection 2023年第1期11卷 15-27页

作者： Huong Huynh Thi Thu Son le Van Hieu Tran Trong Hai Lai Viet Quang Nguyen huu Luan Phan Thi Department of Tracer Techniques Center for Applications of Nuclear Technique in Industry Dalat Vietnam

The tracer technique is recommended as an effective tool in surveying abnormal seepage through lakes and dams. By injecting a tracer into a known upstream location and monitoring the appearance of the tracer in the downstream leak point, it is possible to determine the direction and the average water velocity of the preferential flow through the dam. The detailed result achieved depends on the number of samples and the sampling locations to analyze tracer concentration over time in the field. This study proposes to use noninvasive self-potential measurements to determine the location and time the salt tracer moves through the seepage zone. The connection between the potential signal according to the propagation of the NaCl salt tracer and the water velocity was demonstrated through an experiment on a sandbox model. Experimental results express a good agreement between the time to reach the maximum value of the potential variation and the salt concentration variation with the time that water comes to monitoring locations. The result indicates an ability to determine the pore water velocity of the seepage zone based on the recording of potential signals produced by a salt tracer movement. The salt tracer test using NaCl combined with self-potential measurements was then applied to survey a leaking earth dam in the Dong Nai river basin (Vietnam).

关键词： Earthen Dams Tracer Technique leakage Interstitial Velocity

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

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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 Qian 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 frequency 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