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天文学报 1959年第2期 182-187页

作者：阮王茂松刘宝琳越南气象局中国科学院紫金山天文台

1960—2160年间所发生的日食,根据日月食典所載共有454次,其中全食138次,全环食9次,环食149次,偏食158次.按照日月食典的日食图,有下列9次中心貪的路綫經过越南境內:

关键词：日食天文学报交食食典世界时越南

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.

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

Contributions of Rotation,Expansion and Line Broadening to the Morphology and Kinematics of the Inner CSE of Oxygen-rich AGB Star R Hya

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Research in Astronomy and Astrophysics 2023年第1期23卷 40-47页

作者： Pham Tuyet Nhung Do Thi Hoai Pierre Darriulat Pham Ngoc Diep nguyen Bich Ngoc Tran Thi Thai Pham Tuan-Anh Department of Astrophysics Vietnam National Space CenterVietnam Academy of Science and Technology18Hoang Quoc VietNghia DoCau GiayHa NoiVietnam

We use archival ALMA observations of the CO(2-1)and SiO(5-4)molecular line emissions of AGB star R Hya to illustrate the relative contributions of rotation,expansion and line broadening to the morphology and kinematics of the circumstellar envelope(CSE)within some~70 au(~0."5)from the centre of the *** give evidence for rotation and important line broadening to dominate the inner region,within~14 au(~100 mas)from the centre of the *** former is about an axis that projects a few degrees west of north and has a projected rotation velocity of a few km s^(-1).The latter occurs within some 7-14 au(50-100 mas)from the centre of the star,with the line width reaching two to three times its value outside this *** suggest that it is caused by shocks induced by stellar pulsations and convective cell *** show the importance of properly accounting for the observed line broadening when discussing rotation and evaluating the radial dependence of the rotation velocity.

关键词： stars AGB and post-AGB-(stars:)circumstellar matter-radio lines

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三七总皂苷对肺癌A549细胞上皮间质转化的抑制作用

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中国中西医结合杂志 2019年第1期39卷 76-81页

作者：阮越勇张浩军疏欣杨李得民刘剑王蓓蕾王泽宇韩春生张纾难北京中医药大学研究生院北京100029 中日友好医院临床医学研究所北京100029 中日友好医院中医肺病科中日友好医院呼吸中心国家呼吸疾病临床研究中心北京100029

目的观察三七总皂苷(PNS)对体外经转化生长因子-β_1(TGF-β_1)诱导肺腺癌A549细胞后发生上皮细胞间质化(EMT)的作用。方法首先进行PNS MTT实验,然后再进行PNS干预EMT实验,将A549细胞随机分为5组:空白组加入F-12培养基,模型组及低、中... 详细信息

目的观察三七总皂苷(PNS)对体外经转化生长因子-β_1(TGF-β_1)诱导肺腺癌A549细胞后发生上皮细胞间质化(EMT)的作用。方法首先进行PNS MTT实验,然后再进行PNS干预EMT实验,将A549细胞随机分为5组:空白组加入F-12培养基,模型组及低、中、高浓度中药组分别加入10 ng/mL TGF-β_1和62.5、125、250μg/mL PNS,继续培养72 h。采用光学显微镜观察各组细胞的形态变化,采用实时荧光定量PCR、Western Blot及免疫荧光技术检测纤维连接蛋白(FN)、波形蛋白(Vim)、E-钙黏素(E-Cad)mRNA及蛋白表达水平。结果 31.25～500μg/mL PNS对A549细胞无明显增殖作用。与空白组比较,模型组FN mRNA及蛋白表达升高(P<0.01,P<0.05),Vim蛋白表达升高(P<0.05),E-Cad mRNA及蛋白表达降低(P<0.05)。与模型组比较,高浓度中药组FN mRNA表达降低(P<0.05),E-Cad及蛋白mRNA表达升高(P<0.01,P<0.05);低浓度、高浓度中药组FN蛋白表达降低(P<0.05),低、中浓度中药组Vim蛋白表达降低(P<0.05)。结论 PNS体外干预可提高EMT过程中上皮标志物E-Cad并抑制间质标志物FN、Vim的表达,高浓度时结果更为显著,对EMT过程有一定的干预作用。

关键词：三七总皂苷 A549细胞上皮间质转化

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Establishing the Forecasting Model with Time Series Data Based on Graph and Particle Swarm Optimization

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Journal of Computer Science Research 2023年第2期5卷 1-15页

作者： Le Thi Luong Tran Thi Thanh Nghiem Van tinh Bui Thi Thi Faculty of Electronic Thai Nguyen University of TechnologyThai Nguyen250000Vietnam

In recent years,a wide variety of fuzzy time series(FTS)forecasting models have been created and recommended to handle the complicated and ambiguous challenges relating to time series data from real-world ***,the accuracy of a model is problem-specific and varies across data *** a model’s precision varies between different data sets and depends on the situation at *** though many models assert that they are better than statistics and a single machine learning-based model,increasing forecasting accuracy is still a challenging *** the fuzzy time series models,the size of the intervals and the fuzzy relationship groups are thought to be crucial variables that affect the model’s forecasting *** study offers a hybrid FTS forecasting model that makes use of both the graph-based clustering technique(GBC)and particle swarm optimization(PSO)for adjusting interval lengths in the universe of discourse(UoD).The suggested model’s forecasting results have been compared to those provided by other current models on a dataset of enrollments at the University of *** all orders of fuzzy relationships,the suggested model outperforms its counterparts in terms of forecasting accuracy.

关键词： Forecasting FTS Fuzzy relationship group GBC Enrolments COVID-19

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越南松树枯死病症状及原因初步研究

湖南林业科技 2016年第1期43卷 6-11页

作者： nguyen Thanh Tuan Le Bao Thanh 颜学武南京林业大学森林资源与环境学院江苏南京210037 越南林业大学森林资源管理与环境学院越南河内100803 湖南省林业科学院湖南长沙410004

为查明越南松树枯死的原因,对越南南部的林同省,中部的承天-顺化省,北部的广宁省的思茅松、马尾松和南亚松枯死症状和原因进行了调查,分别从枯死、濒死、健康松树木质部中抽取52份样品,用于线虫分离镜检。调查发现松树在感病后,树冠部... 详细信息

为查明越南松树枯死的原因,对越南南部的林同省,中部的承天-顺化省,北部的广宁省的思茅松、马尾松和南亚松枯死症状和原因进行了调查,分别从枯死、濒死、健康松树木质部中抽取52份样品,用于线虫分离镜检。调查发现松树在感病后,树冠部分针叶失去光泽,逐渐褪绿变黄,进而褐红干枯,最后整个树冠变为褐色或红褐色,全株枯死,针叶下垂且当年不落;随着病程的发展,松脂分泌逐渐减少,直至停止;树干上有天牛产卵刻槽,死亡的松树上有天牛的羽化孔。在抽取的松树样品中分离鉴定到了泰国伞滑刃线虫(Bursaphelenchus thailandae Brassch&Brassch-Bidasak,2002),为病原的确定和防治工作提供初步的依据。

关键词：越南松树天牛线虫

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Converting textile waste into value-added chemicals:An integrated bio-refinery process

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Environmental Science and Ecotechnology 2023年第3期15卷 66-76页

作者： Eun Jin Cho Yoon Gyo Lee Younho Song Ha Yeon Kim Dinh-Truong nguyen Hyeun-Jong Bae Bio-Energy Research Center Chonnam National UniversityGwangju500-757Republic of Korea Department of Bioenergy Science and Technology Chonnam National UniversityGwangju500-757Republic of Korea School of Biotechnology Tan Tao UniversityLong An82000Viet Nam

The rate of textile waste generation worldwide has increased dramatically due to a rise in clothing consumption and ***,conversion of cotton-based,colored cotton-based,and blended cotton-polyethylene terephthalate(PET)textile waste materials into value-added chemicals(bioethanol,sorbitol,lactic acid,terephthalic acid(TPA),and ethylene glycol(EG))via enzymatic hydrolysis and fermentation was *** order to enhance the efficiency of enzymatic saccharification,effective pretreatment methods for each type of textile waste were developed,respectively.A high glucose yield of 99.1%was obtained from white cotton-based textile waste after NaOH ***,the digestibility of the cellulose in colored cotton-based textile wastes was increased 1.38e1.75 times because of the removal of dye materials by HPAC-NaOH *** blended cottonPET samples showed good hydrolysis efficiency following PET removal via NaOHeethanol pretreatment,with a glucose yield of 92.49%.The sugar content produced via enzymatic hydrolysis was then converted into key platform chemicals(bioethanol,sorbitol,and lactic acid)via fermentation or *** maximum ethanol yield was achieved with the white T-shirt sample(537 mL/kg substrate),which was 3.2,2.1,and 2.6 times higher than those obtained with rice straw,pine wood,and oak wood,*** was selectively converted into sorbitol and LA at a yield of 70%and 83.67%,*** and EG were produced from blended cottonPET via NaOHeethanol *** integrated biorefinery process proposed here demonstrates significant potential for valorization of textile waste.

关键词： Textile waste Value-added biochemicals Integrated biorefinery Bioethanol Lactic acid

Short mucin 6 alleles are associated with H pylori infection

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World Journal of Gastroenterology 2006年第37期12卷 6021-6025页

作者： Thai V nguyen Marcel JR Janssen Paulien Gritters René HM te Morsche Joost PH Drenth Henri van Asten Robert JF Laheij Jan BMJ Jansen Department of Gastroenterology Can Tho University of Medicine and Pharmacy Can Tho Viet Nam Department of Gastroenterology and Hepatology Radboud University Nijmegen Medical Centre Nijmegen The Netherlands Nijmegen Institute for International Health Radboud University Nijmegen Medical Centre Nijmegen The Netherlands

AIM： To investigate the relationship between mucin 6 （MUC6） VNTR length and Hpylori infection. METHODS： Blood samples were collected from patients visiting the Can Tho General Hospital for upper gastrointestinal endoscopy. DNA was isolated from whole blood, the repeated section was cut out using a restriction enzyme （Pvu 11） and the length of the allele fragments was determined by Southern blotting. Hpylori infection was diagnosed by ^14C urea breath test. For analysis, MUC6 allele fragment length was dichotomized as being either long （〉 13.5 kbp） or short （≤ 13.5 kbp） and patients were classified according to genotype [long- long （LL）, long-short （LS）, short-short （SS）]. RESULTS： 160 patients were studied （mean age 43 years, 36% were males, 58% H pylori positive）. MUC6 PvuⅡ-restricted allele fragment lengths ranged from 7 to 19 kbp. Of the patients with the LL, LS, SS MUC6 genotype, 43% （24/56）, 57% （25/58） and 76% （11/46） were infected with Hpylori, respectively （P = 0.003）. CONCLUSION： Short MUC6 alleles are associated with H pylori infection.

关键词： H pylori Mucin 6 Polymorphism Variable number of tandem repeats

Agrobacterium-Mediated Transformation of Cry8db Gene in vietnam Sweet Potato Cultivar

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Journal of Life Sciences 2015年第6期9卷 262-271页

作者： Pham Bich Ngoc Vu Thi Lan Tran Thu Trang nguyen Hoai Thuong Le Thu Ngoc Chu Hoang Ha Le Tran Binh Institute of Biotechnology Vietnam Academy of Science and Technology 18-Hoang Quoc Viet Cau Giay Ha Noi 10000 Vietnam College of Science Thai Nguyen University Tan Thinh Thai Nguyen 23000 Vietnam University of Science and Technology of Ha Noi 18-Hoang Quoc Viet Cau Giay Ha Noi 10000 Vietnam

Sweet potato [Ipomoea batatas （L.） Lam.] is an important food crop in the world as well as in vietnam. It is well known as a recalcitrant crop for gene transformation and tissue culture because of its genotype dependent in vitro responses. In present study, Agrobacterium-mediated transformation of cry8Db from Bacillus thuringiensis into KB 1 sweet potato variety has been studied. The C58cv strain carrying a pBl 121 backbone which contained cry8Db delta-endotoxin gene regulated under 35 S CaMV prom oter, and the selection marker gene, neomycin phosphotransferase （npt11） gene, was subjected for plant transformation. Callus induced from shoot tips and leaf explants were inoculated and cocultured with A. tumefaciens. The selection occurred during callus producing and plant regenerating steps. A total of 201 transgenic putative plant lines were produced, and 21 transgenic lines were positively confirmed by PCR and finalized by Southern blot. Four putative transgenic lines confirming a single copy of the crySEIb gene were transferred into soil pots in greenhouse. Biological activity evaluation for the insecticidal capacity of these transgenic lines under controlled conditions showed that the level of infestation by sweet potato weevils （Cylasformicarius） in untransformed plants was higher than that of transgenic lines.

关键词： Sweet potato Agrobacterium tumefaciens plant transformation cry8Db sweet potato weevil resistance cylas formicarius.