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| 1 | Xanthine oxidase inhibitors from Archidendron clypearia(Jack.) I.C. Nielsen: Results from systematic screening of Vietnamese medicinal plants显示文摘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. | Nguyen Thuy Duong Pham Duc Vinh Phuong Thien Thuong Nguyen Thi Hoai Le Nguyen Thanh Tran The Bach Nguyen Hai Nam Nguyen Hoang Anh | 2017 | Asian Pacific Journal of Tropical Medicine2017，10，6： | 5 |
| 2 | Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests显示文摘Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest ecosystems.This study analyses the variation of AGB and stand structure of evergreen broadleaved forests among six ecoregions of Vietnam.A data set of 1731-ha plots from 52 locations in undisturbed old-growth forests was developed.The results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of sunshine.Basal area and AGB are positively correlated with trees>30 cm DBH.Most areas surveyed(52.6%)in these old-growth forests had AGB of 100–200 Mg ha^-1;5.2%had AGB of 400–500 Mg ha^-1,and 0.6%had AGB of>800 Mg ha^-1.Seventy percent of the areas surveyed had stand densities of 300–600 ind.ha^-1,and 64%had basal areas of 20–40 m^2 ha^-1.Precipitation is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in Vietnam.Disturbances causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density. | Tran Van Do Mamoru Yamamoto Osamu Kozan Vo Dai Hai Phung Dinh Trung Nguyen Toan Thang Lai Thanh Hai Vu Thanh Nam Trieu Thai Hung Hoang Van Thang Tran Duc Manh Cao Chi Khiem Vu Tien Lam Nguyen Quang Hung Tran Hoang Quy Pham Quang Tuyen Trinh Ngoc Bon Nguyen Thi Thu Phuong Ninh Viet Khuong Nguyen Van Tuan Dang Thi Hai Ha Tran Hai Long Dang Van Thuyet Dang Thinh Trieu Nguyen Van Thinh Tran Anh Hai Duong Quang Trung Nguyen Van Bich Dinh Hai Dang Pham Tien Dung Nguyen Huy Hoang Le Thi Hanh Phan Minh Quang Nguyen Thi Thuy Huong Hoang Thanh Son Nguyen Thanh Son Nguyen Thi Van Anh Nguyen Thi Hoai Anh Pham Dinh Sam Hoang Thi Nhung Hoang Van Thanh Nguyen Huu Thinh Tran Hong Van Ho Trung Luong Bui Kieu Hung | 2020 | Journal of Forestry Research2020，31，5： | 1 |
| 3 | Preparation of bio-fuels by catalytic cracking reaction of vegetable oil sludge显示文摘 | Le Thi Hoai Nam Tran Quang Vinh Nguyen Thi Thanh Loan | 2011 | Fuel2011，90，： | 1 |
| 4 | Batch and column separation characteristics of copper-imprinted porous polymer micro-beads synthesized by a direct imprinting method显示文摘 | Nguyen To Hoai Dong-Keun Yoo Dukjoon Kim | 2010 | Journal of Hazardous Materials2010，173，123： | 1 |
| 5 | Improved fracture toughness and fatigue life of carbon fiber reinforced epoxy composite due to incorporation of rubber nanoparticles显示文摘 | Nguyen Tien Phong Mohamed H. Gabr Le Hoai Anh Vu Minh Duc Andrea Betti Kazuya Okubo Bui Chuong Toru Fujii | 2013 | Journal of Materials Science2013，，17： | 1 |
| 6 | Batch and column separation characteristics of copper-imprinted porous polymer micro-beads synthesized by a direct imprinting method显示文摘 | Nguyen To Hoai Dong-Keun Yoo Dukjoon Kim | 2010 | Journal of Hazardous Materials2010，173，： | 1 |
| 7 | Accumulation of some nitrogen compounds in response to salt stress and their relationships with salt tolerance in rice (Oryza sativa L ) seedling显示文摘 | Nguyen Thi Thu Hoai Ie Sung Shim Katsuichiro Kobayashi | 2003 | Plant Growth Regulation2003，41，2： | 1 |
| 8 | CCL21 ( SLC) improves tumor protection by a DNA vaccine in aHer2/neu mouse tumor model显示文摘 | NGUYEN HOAI T BALDENHOFER G AHMED M S | 2011 | Cancer Gene Ther2011，19，1： | 1 |
| 9 | Overall effect of rice biomass and fish on the aquatic ecology of experimental rice plots显示文摘 | Nico Vromant Nguyen Thi Hoai Chau | 2005 | Agriculture Ecosystems and Environment2005，，1： | 1 |
| 10 | Improved fracture toughness and fatigue life of carbon fiber reinforced epoxy composite due to incorporation of rubber nanoparticles显示文摘 | Nguyen Tien Phong Gabr M H Le Hoai Anh | 2013 | Journal of Materials Science2013，48，17： | 1 |
| 11 | A Unified Monotonic Approach to Generalized Linear Fractional Programming显示文摘 | Nguyen Thi Hoai Phuong Hoang Tuy | 2003 | Journal of Global Optimization2003，，3： | 1 |
| 12 | Accumulation of some nitrogen compounds in response to salt stress and their re-lationships with salt tolerance in rice(Oryza sativa L)seedling显示文摘 | NGUYEN THI THU HOAI IE SUNG SHIM KATSUICHIRO KOBAYASHI | 2003 | Plant Growth Regulation2003，41，2： | 1 |
| 13 | Inhibitors of osteoclastogenesis from Lawsonia inermis leaves显示文摘 | Nguyen Xuan Cuong Nguyen Xuan Nhiem Nguyen Phuong Thao Nguyen Hoai Nam Nguyen Tien Dat Hoang Le Tuan Anh Le Mai Huong Phan Van Kiem Chau Van Minh Ji-Hee Won Won-Yoon Chung Young Ho Kim | 2010 | Bioorganic & Medicinal Chemistry Letters2010，，16： | 1 |
| 14 | Metric Learning for Image Alignment显示文摘 | Minh Hoai Nguyen Fernando Torre | 2010 | International Journal of Computer Vision2010，，1： | 1 |
| 15 | 吡喹酮对鲤鱼感染台湾棘带吸虫后期囊幼虫的防治效果显示文摘【目的】探讨3种不同药物处理方式对台湾棘带吸虫引起的鲤鱼幼鱼急性鱼鳃传染病(开放性鳃病)的防治效果。【方法】在试验初期,将1620条鲤鱼幼鱼(70日龄)鱼鳃自然感染台湾棘带吸虫,随后分成4组,分别采用CuSO4、福尔马林和吡喹酮不同方式处理6周,与对照(自然喂食、不使用任何化学药剂)比较防治鲤鱼幼鱼急性鳃传染病的效果。【结果】感染台湾棘带吸虫的幼鱼生长缓慢,其身长和体重增长均较慢。施药后,幼鱼台湾棘带吸虫后期囊幼虫感染强度减少。在每千克饲料中分别添加50和75mg吡喹酮喂食幼鱼5d,可以杀死鱼鳃中所有的台湾棘带吸虫后期囊幼虫,且鱼鳃恢复正常;而使用25mg吡喹酮,仅有35%的后期囊幼虫死亡。所有不同浓度CuSO4处理(0.3、0.4和0.5mg/kg冲洗浸泡24h及以3.0、4.0和5.0mg/kg冲洗浸泡10m)和福尔马林处理(20、25和30mg/kg冲洗浸泡及200、250和300mg/kg短时间冲洗浸泡)均不能杀死台湾棘带吸虫后期囊幼虫。【结论】经普通化学药剂CuSO4或福尔马林冲洗浸泡,不能防治由台湾棘带吸虫后期囊幼虫引起的鲤鱼开放性鳃病,但50~75mg吡喹酮/kg饲料可以在5d内治疗该病。 | Kim Van Van Truong Dinh Hoai Kurt Buchmann Anders Dalgaard Nguyen Van Tho | 2012 | 南方农业学报2012，43，4： | 0 |
| 16 | 应用突函数差异算法进行癌症分类的基因选择(英文)显示文摘研究了有关癌症分类的基因选择问题。开发了集成的基于平滑剪切绝对偏差罚分的SVM—特征选择方法,直接最小化分类器的性能。为解决优化问题,应用了突函数差异算法(difference of convex functionsal-gorithms,DCA)这一进行非突连续优化的通用框架,致使连续线性规划算法有限收敛。真实数据集上的先验实验表明算法达到了预想目标:在压缩大量属性的同时,保持了较小分类差错。 | LE THI Hoai An NGUYEN Van-Vinh OUCHANI Samir | 2009 | 计算机科学与探索2009，3，6： | 0 |
| 17 | Challenges in Power Production Investment in Vietnam显示文摘This paper presents the results of the survey to initially assess the current situation of power supply chain development in Vietnam. The research team used questionnaires to identify challenges and barriers in power production investment. Surveyors came from power generation units, power transmission and distribution units, service providers for power plants, consulting agency and research institutes. The results indicated that there is a difference among enterprises’ barriers and difficulties in the management, finance and investment environment. This difference is related to the business profiles of the enterprise, its segment of the electricity generation market, capacity and experience in the market. | Nam Hoai Nguyen Binh Van Doan Quyen Le Luu Thanh Cao Nguyen | 2019 | Journal of Electrical Engineering2019，7，1： | 0 |
| 18 | Gravitationally lensed extended sources: the case of QSO RXJ0911显示文摘After a brief reminder of the mechanism of gravitational lensing of extended sources, the particular case of the host galaxy of QSO RXJ0911, a high redshift (z~2.8) quadruply imaged quasar, is explored. The non linearity of the problem, together with the proximity of the source to a cusp of the lens inner caustic, has important consequences on the dependence of the image appearance on the size and shape of the source. Their expected main features and their interpretation in terms of source extension and shape are investigated in a spirit of simplicity and in preparation for the analysis of high sensitivity and spatial resolution images that will soon be within reach with the completion of the Atacama Large Millimeter/submillimeter Array (ALMA). In particular, the information on source size carried by relative image brightness is discussed. Extension of the results to other types of quadruply imaged quasars is briefly considered. | Do Thi Hoai Pham Tuyet Nhung Pham Tuan Anh Frederic Boone Pierre Darriulat Pham Ngoc Diep Pham Ngoc Dong Nguyen Van Hiep Nguyen Thi Thao | 2013 | Research in Astronomy and Astrophysics2013，13，7： | 0 |
| 19 | New Results on System of Generalized Quasi-Ky Fan Inequalities with Set-Valued Mappings in Topological Semilattice Spaces显示文摘Under new assumptions,this paper obtains some extended versions of Ky Fan type inequality for a family of C-continuous set-valued mappings in the setting of topological semilattices.The obtained results are new and different from the corresponding known results in the literature.Some special cases of the main result are also discussed.Some examples are given to illustrate the results. | NGUYEN The Vinh PHAM Thi Hoai | 2016 | Journal of Systems Science & Complexity2016，29，6： | 0 |
| 20 | Selection of Sesame Accessions(Sesamum indicum L.)in Thua Thien Hue Province,Vietnam显示文摘The main objective of this study was to select the best accessions for use as potential breeding sources in Thua Thien Hue province.A total of 16 accessions were used in this study,of which three accessions from Ho Chi Minh city in Vietnam,four accessions supplied by Japan,six accessions collected from China,two accessions provided by the United States and one MèVàng local accession(control)from Thua Thien Hue.The field experiment was conducted from August 2016 to November 2016 and laid out in a random complete block design(RCBD)for three replications at Huong Long ward,Hue city,Thua Thien Hue province.Each accession was observed 10 plants per replication.The size of each plot was 10 m2 and the spacing of 25 cm×10 cm was applied.The results showed that experiment accessions can grow under Thua Thien Hue conditions.Of those,the actual yield of VV12,VDM21,VH12,VDM50,VH01 and VDM45 were higher than the other accessions with 1.65,1.64,1.55,1.54,1.52 and 1.45 tons/ha,respectively.Oil content of these six accessions was above 50%.Therefore,VV12,VDM21,VH12,VDM50,VH01 and VDM45 can be used for breeding and cultivation under local condition. | Tram Thi Hoai Nguyen The Thi Dieu Nguyen Hai Thi Hong Truong | 2017 | Journal of Agricultural Science and Technology(A)2017，7，B10： | 0 |
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