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Does Embankment Improve Quality of a River? A Case Study in To Lich River Inner City Hanoi, with Special Reference to Heavy Metals

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Journal of Environmental Protection 2013年第4期4卷 361-370页

作者： nguyen thi thuong Minoru Yoneda Yasuto Matsui Lab of Environmental Risk Analysis Department of Environmental Engineering Graduate School of Engineering Kyoto University Kyoto Japan

To Lich River (TLR) system receives wastewaters from a population of nearly two million people and 100 manufactories of five industrial zones in inner city Hanoi, Vietnam. To improve quality of TLR, the embankment was carried out in 1998 and finished in 2002, resulted in width of 20 - 45 m, depth of 2 - 4 m, and maximum water flow capacity of 30 m3/s. Water and sediment quality indices based on heavy metal concentrations were used to evaluate current river environment compared to that of pre-embankment. Mass balance model was employed to estimate total metal loads for specific river reaches, which corresponds to various types of wastewater discharged along the river. The results indicated that currently there is about284,000 m3sediment accumulated in TLR bed, which is under high contamination of Cr, Mn, Fe, Ni Cu, Zn, As, Cd, and Pb with a total of 7347 tons of all concerned metals. Domestic-discharged river reaches received much lower metal loads, roughly 8% - 28% compared to river reaches of both domestic and industrial inputs. Total load of all nine concerned metals at the end of TLR is161.7 kg/day, which is finally discharged to Nhue River at South Hanoi. Water quality was improved much right after finishing embankment, then it gradually deteriorated. Meanwhile, sediment quality became even much worse after embankment. Relative river quality index as equal weight for both water and sediment quality indices indicated that quality of TLR was not much improved after the embankment. It even became worse due to the urbanization in recent years.

关键词： Industrial Discharge Mass Balance Metal Load River Quality Index Sediment Accumulation

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框架理论视野下越南＜VnExpress＞对“一带一路”报道研究

框架理论视野下越南＜VnExpress＞对“一带一路”报道研究

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作者： nguyen thi thuong 厦门大学

学位级别：硕士

中国国家主席习近平在2013年提出“一带一路”倡议,至今已经跟许多国家进行相关合作。越南是“一带一路”路线上国家之一,同时也是中国在东南亚地区的重要合作伙伴。因此,了解越南政府和民众对“一带一路”倡议的认识与看法,无论是对于... 详细信息

中国国家主席习近平在2013年提出“一带一路”倡议,至今已经跟许多国家进行相关合作。越南是“一带一路”路线上国家之一,同时也是中国在东南亚地区的重要合作伙伴。因此,了解越南政府和民众对“一带一路”倡议的认识与看法,无论是对于“一带一路”建设还是发展中越合作关系,均有着重要作用。当今由于新闻传媒成为探析某一国家民众观点与倾向的一个重要渠道,本研究选择越南主流媒体之一的VnExpress对“一带一路”的相关报道做为研究对象,以框架理论作为理论依据,并结合内容分析法和文本分析法对新闻报道进行分析。通过研究与分析,本研究发现:VnExpress媒体对“一带一路”报道以积极正面为主,但仍然还存在较多负面报道。一方面,出于本国紧迫的经济要求,越方表示期待顺利参与“一带一路”倡议建设,另一方面,对于中国的崛起以及地缘政治的“威胁”,越方又表现出一定的怀疑、警惕态度与平衡外交的策略。

关键词：越南VnExpress “一带一路”报道框架理论

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Twin reversed arterial perfusion sequence-a rare and dangerous complication form of monochorionic twins:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10214-10219页

作者： nguyen Duy Anh nguyen-thi Thu Ha nguyen-thi Sim nguyen Khac Toan Phan-thi Huyen thuong nguyen Minh Duc Fetal Medicine Center Hanoi Obstetrics and Gynecology HospitalHanoi 100000Vietnam Department of Assisted Reproduction Hanoi Obstetrics and Gynecology HospitalHanoi 100000Vietnam Department of Obstetrics and Gynecology Hanoi University of Medicine and PharmacyHanoi 100000Vietnam Department of Radiology Pham Ngoc Thach University of MedicineHo Chi Minh City 700000Vietnam

BACKGROUND Twin reversed arterial perfusion(TRAP) sequence is an extremely rare congenital anomaly in monochorionic(MC) *** condition is characterized by a malformed fetus(acardiac twin) without cardiac activities being perfused by a structurally normal one(pump twin) via an artery-to-artery anastomosis in a reverse *** SUMMARY We described the first case of TRAP to receive laser surgery in *** 26-wk pregnancy was originally misdiagnosed in another hospital as MC twins with single intrauterine fetal *** admission to our center,the diagnosis was amended to a 26-wk TRAP sequence stage *** acardiac twin was 7.5 cm at the longest length,the ratio of the weight of the acardiac twin to the weight of the pump twin was more than 90%,the pump twin showed fetal distress with absent diastolic flow in umbilical artery of pump twin,and the peak systolic velocity in the middle cerebral artery = 1.6 Mo *** performed emergency laser photocoagulation of the acardiac twin’s umbilical *** surgery,we successfully maintained the pregnancy for 8 wk and ended it electively by cesarean section at 34 wk of gestation due to rupture of *** TRAP should be appropriately diagnosed and treated early to avoid complications of the pump *** laser photocoagulation is a new and effective treatment for this condition.

关键词： Twin reversed arterial perfusion Acardiac twin Pump twin Laser Case report

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越南税收行政改革

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广西财经学院学报 2008年第3期21卷 27-29页

作者：阮氏商玄越南财政学院海关税收系

该文分析了越南税收行政改革取得的突破性进展,提出了新时期税收行政改革的基本方向和措施。

关键词：越南税收行政改革

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Analysis of Storm Pattern for Design Urban Drainage System in the Monsoon Areas of Vietnam

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Journal of Environmental Science and Engineering(A) 2018年第2期7卷 49-68页

作者： Bui thi Thu Trang nguyen thi Hong Hanh nguyen thi Hoai thuong nguyen Van Thuan Faculty of Environment Hanoi University of Natural Resources and EnvironmentHanoi 100000Vietnam Department of General Affairs State Audit Office of VietnamHanoi 100000Vietnam

In Vietnam,rainfall data usually received using daily rainfall at all hydrology stations with higher time resolution are ***,its analyses to achieve IDF(Intensity-Duration-Frequency)curves are often required at a finer scale such as ***,it needs to develop and apply methods to derive the IDF characteristics of short-duration events from daily rainfall statistics in *** recent years,the need for new insights into the rainfall process leading to new approaches to model the distribution of rainfall intensities in time and space was *** research aims to establish IDF curves for monsoon climate area in Vietnam based on scaling *** properties of extreme rainfall are examined in the Red River Delta of Vietnam in order to establish scaling behavior of statistical moments over different *** scaling or scale-invariant models enable us to scale data from one temporal resolution to another,and thus,help to overcome the lack of the extreme rainfall data of sub-daily *** disaggregation or downscaling techniques are used to obtain sub-daily rainfall data from daily rainfall data for the derivation of scaled IDF *** results show that most of rainfall amount(approximately 70%)received from rains occurring between 6:0 pm to 6:0 am of the day after that,the daytime usually less rainfall occurrence with only 30%.The peak rainfall is usually occurred during 0:0 am to 4:0 am having approximately 42.98%of rainfall amount over a *** peak rainfall likely happen earlier in the recent year(36%rainfall amount over a day occurrence from 6:00 pm to 10:00 pm in 2008).The analysis also illustrated that approximately 40%of rainfall events have duration less than 60 *** contrast,only approximately 9%of rainfall events have duration more than 6 hours but total rainfall depths of these events is approximately.

关键词： IDF(Intensity-Duration-Frequency)curves design rainfall for urban design rainfall in the Monsoon areas

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Highly active brookite TiO2-assisted photocatalytic degradation of dyes under the simulated solar-UVA radiation

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Progress in Natural Science:Materials International 2019年第6期29卷 641-647页

作者： Huyen Tran thi thuong Chi Tran thi Kim Liem nguyen Quang Hendrik Kosslick Institute of Materials Science (IMS) Vietnam Academy of Science and Technology (VAST) University of Rostock Institute of Chemistry Department of Inorganic Chemistry

Brookite TiO2nanoparticles were synthesized by hydrothermal method and characterized by X-ray powder diffraction(XRD), diffuse reflectance UV–Visible spectroscopy(DRUV), and scanning electron microscopy(SEM). The obtained particles were spherical in shape with the diameter of about ～10 nm under the hydrothermal temperature of 175 °C. The photocatalytic performance of brookite was investigated in the photodegradation of dyes(rhodamine B and rose bengal) under UV-A radiation by low-power lamp. The activity of brookite and the photodegradation efficiency of dyes were estimated using a UV–Visible spectrophotometer and a total organic carbon(TOC) analyzer. Compared to anatase and rutile prepared by the similar synthesis procedure, brookite is highly active in terms of decolourization, aromatic ring opening, and mineralization.

关键词： Brookite Anatase Dye Photocatalytic degradation Decolourization Mineralization

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Xanthine oxidase inhibitors from Archidendron clypearia(Jack.) I.C. Nielsen: Results from systematic screening of Vietnamese medicinal plants

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Asian Pacific Journal of Tropical Medicine 2017年第6期10卷 619-626页

作者： nguyen Thuy Duong Pham Duc Vinh Phuong thien thuong nguyen thi Hoai Le nguyen Thanh Tran The Bach nguyen Hai Nam nguyen Hoang Anh Department of Pharmacology Hanoi University of Pharmacy Department of Pharmaceutical Analysis and Standardization National Institute of Medicinal Materials Department of Pharmacognosy Hue University of Medicine and Pharmacy Institute of Marine Biochemistry Vietnam Academy of Science and Technology Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Department of Medicinal Chemistry Hanoi University of Pharmacy

Objective: To screen Vietnamese medicinal plants for xanthine oxidase(XO) inhibitory activity and to isolate XO inhibitor(s) from the most active plant. Methods: The plants materials were extracted by methanol. The active plant materials were fractionated using different organic solvents, including n-hexane, ethyl acetate, and n-butanol. Bioassay-guided fractionation and column chromatography were used to isolate compounds. The compounds structures were elucidated by analysis of spectroscopic data, including IR, MS, and NMR. Results: Three hundreds and eleven methanol extracts(CME) belonging to 301 Vietnamese herbs were screened for XO inhibitory activity. Among these plants, 57 extracts displayed XO inhibitory activity at 100 μg/m L with inhibition rates of over 50%. The extracts of Archidendron clypearia, Smilax poilanei, Linociera ramiflora and Passiflora foetida exhibited the greatest potency with IC_(50) values below 30 μg/m L. Chemical study performed on the extract of Archidendron clypearia resulted in the isolation of six compounds, including 1-octacosanol, docosenoic acid, daucosterol, methyl gallate, quercitrin and(-)-7-O-galloyltricetiflavan. The compound(-)-7-O-galloyltricetiflavan showed the most potent XO inhibitory activity with an IC_(50) value of 25.5 μmol/L. Conclusions: From this investigation, four Vietnamese medicinal plants were identified to have XO inhibitory effects with IC_(50) values of the methanol extracts below 30 μg/m L. Compound(-)-7-O-galloyltricetiflavan was identified as an XO inhibitor from Archidendron clypearia with IC_(50) value of 25.5 μmol/L.

关键词： Xanthine oxidase Inhibitor Medicinal plants Vietnam

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越南和平水电站库区不同农林复合模式的环境效益比较

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农业工程学报 2015年第S1期31卷 291-297页

作者： Vu thi thuong nguyen The Ky 王来张硕新西北农林科技大学林学院杨凌712100 越南林业大学林学院越南河内100803 陕西秦岭森林生态系统国家野外科学观测研究站杨凌712100

为了找出最适宜于越南中部山区、预期综合环境效益最佳的、更利于生态平衡的农林复合模式,该研究以越南和平水电站库区4种主要农林复合模式:马占相思树(Acacia mangium)-玉米(Zea mays)、马占相思树-木薯(Manihot esculenta crantz)、... 详细信息

为了找出最适宜于越南中部山区、预期综合环境效益最佳的、更利于生态平衡的农林复合模式,该研究以越南和平水电站库区4种主要农林复合模式:马占相思树(Acacia mangium)-玉米(Zea mays)、马占相思树-木薯(Manihot esculenta crantz)、赤桉树(Eucalyptus camandulensis)-旱稻(Oraza sativa)和马占相思树-木薯-玉米为研究对象,采用盖度、土壤理化性质、土壤蓄水能力、水土保持能力等指标进行环境效益的比较,最后得出的结论为:在4种农林复合模式中,马占相思树-木薯-玉米复合模式具有最高的水土保持效益和综合环境效益;赤桉树-旱稻复合模式的水土保持效益和综合环境效益均最低;实践中应该增加前者的种植面积,限制和减小后者的种植面积。在马占相思树-木薯-玉米复合模式的基础上加以改进,提出了预期综合环境效益更好的马占相思树-木薯-玉米-肉桂(Cinnamomum cassia)复合模式,为农林复合系统在和平水电站库区的应用提供更好的选择,同时也为世界上有类似气候环境条件的地区农林复合模式的采用提供参考。

关键词：土地利用生态林学农林复合系统环境效益马占相思树

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COVID-19 Infection: The Virus and Its Origin, the Variants, the Immune Defense, the Multiorgan Autoimmune Reactions, and the Targeted Treatments

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Advances in Infectious Diseases 2022年第3期12卷 568-631页

作者： Vu thuong nguyen Lawrence S. Chan Advanced Cosmeceuticals Enterprises Inc. Sacramento USA Department of Dermatology University of Illinois Chicago USA Captain James Lovell Federal Health Care Center North Chicago USA Department of Dermatology School of Medicine University of California Davis USA

Background: SARS-CoV-2, the virus responsible for the current COVID-19 infection pandemic, has caused substantial damage and negative impacts in the world, including physical sickness, mental illness, death, society lock down, work interruption, and productivity reduction. From the onset in early 2020, the pandemic has not yet totally subsided as of July 2022. Although great efforts have been made to understand the nature of this pandemic by the medical and scientific communities, a comprehensive review of this pandemic has not been reported. Purpose: We aimed to perform a thorough review of the subject in order to come to a better understanding of the origin of the virus, its mutations and their corresponding health effects, its pathophysiology, and its responses to therapeutic intervention. A more comprehensive set of data on these subject matters, if available, would give healthcare providers a valuable tool in formulating the best methods to respond to the current disease and prevent the disease from spreading in the future. Method: An extensive literature search on the subjects of COVID-19 was conducted regarding the possible origin of the viral pathogen, its evolutionary changes and health impacts, the world’s responses to COVID-19 and outcomes of their responses, and healthcare professional’s actions to understand and manage the disease and the results of their actions. To gather these data, websites of PubMed and Google Scholar were utilized for the search with the following keywords: Pandemic, COVID-19, coronavirus, SARS, SARS-CoV, SARS-CoV-2, origin, pathogenesis, and treatment. Results: Our review revealed data that points to an interesting autoimmune phenomenon where most seriously sick patients affected by COVID-19 were documented by an IgA-dominant immune response to the pathogen, along with a neutrophil-directed infiltration to the vital organ in the lung aveola, resulting in critical lung injury, leading to respiratory failure, multi-organ failure, a

关键词： COVID-19 Pathogenesis Autoimmune Mortality ARDS SARS-CoV-2 Origin Delta Variant Omicron Variant Neutrophil IgA Neutrophil Adherence Cytokine Storm Dapsone Methylprednisolone Antithombotic Treatment Therapeutic Mechanism

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Dapsone: A Century-Old Medicine and a New Hope for Severe COVID-19

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Advances in Infectious Diseases 2022年第1期12卷 50-56页

作者： Vu thuong nguyen Lawrence S. Chan Advanced Cosmeceuticals Enterprises Inc. Sacramento California USA Department of Dermatology University of Illinois Chicago Illinois USA Department of Medicine Captain James Lovell FHCC North Chicago IL USA

Background: The 2020 pandemic of COVID-19 infection, which has already lasted more than 22 months, is not subsiding. Despite the available vaccinations, the infection is still claiming many lives throughout the world, especially among the unvaccinated people. The newly discovered and fast spreading Omicron variant also raises the concern if vaccination alone will be sufficient to win this battle. Purpose: In this concept paper, we examine the possible use dapsone, a century-old and safe medication, to treat patients with severe cases of pulmonary COVID-19 infection. Methods: We aim to delineate the similarities between IgA-mediated neutrophil-directed blistering skin diseases and the severe pulmonary COVID-19 infection by reviewing the relevant medical literatures, in order to compare the pathological mechanisms of these two different clinical situations. Results: Analysis of published reports reveals strong evidence pointing to the involvement of IgA and neutrophils in both clinical situations. In addition, results of a small clinical trial showed efficacy of dapsone in patients suffered with severe COVID-19 infection. Conclusions: Since dapsone is effective in treating IgA-mediated skin diseases by blocking the binding of neutrophils to the tissue site, it could also be an effective treatment for severe cases of COVID-19 lung injury, which has a similar pathological mechanism.

关键词： Dapsone IgA Neutrophils COVID-19 Lung Injury

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