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Adaptability Zoning for Salty-Tolerant Rice Varieties in Soc Trang Prefecture by Using GIS and Remote Sensing

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Journal of Geological Resource and Engineering 2016年第3期4卷 142-150页

作者： Tran thanh Dan Tran Thi Ngoc Trinh Vo quang Minh Huynh Ngoc Van Department of Land Resources College of the Environment and Natural Resources Can Tho University Viet Nam Department of Science and Technology Graduate School of Engineering Nagasaki University Japan Center of Seed and Plant Soc Trang province Viet Nam

Soc Trang is one of coastal provinces in which rice land is relatively low and therefore under annual threat of saline intrusion and other climatic variabilities. It raises an urgent need to identify various rice varieties which are short-duration, highly adaptive to salinity penetration, floods and aluminium poisonous matters, as well as high productivity and quality. The research applies the GIS （Geo-Information System） and RS （Remote Sensing） techniques to accurately evaluate the adaptability of different salinity-tolerant rice varieties. We have used information from FAO （The Food and Agriculture Organization）, Maplnfo and ArcGIS to map different components separately that are overlapped and mixed together to build different maps indicating the adaptability of different rice varieties to salinity in different locations in Soc Trang. We have also identified various factors affecting the productivity of these rice varieties. Then, several salinity-resistent rice varieties have been piloted in different areas to figure out which varieties are most suitable for specific regions.

关键词： Adaptability salty-tolerant rice climate change remote sensing GIS.

基于循环稳定特性的空时分组码MC-CDMA信号盲识别算法

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系统工程与电子技术 2015年第7期37卷 1650-1657页

作者：裴光盅张天骐高超重庆邮电大学信号与信息处理重庆市重点实验室重庆400065

空时码应用最广泛的是空时分组码(space-time block code,STBC)和垂直分层空时码(vertical bell layered space-time code,VBLAST),因为STBC信号具有时间上的相关特性,所以在求高阶循环累积量时,该信号有一个特殊的循环频率,而VBLAST信... 详细信息

空时码应用最广泛的是空时分组码(space-time block code,STBC)和垂直分层空时码(vertical bell layered space-time code,VBLAST),因为STBC信号具有时间上的相关特性,所以在求高阶循环累积量时,该信号有一个特殊的循环频率,而VBLAST信号没有此特性。提出了一种基于循环稳定特性的STBC多载波码分多址(multicarrier code division multiple access,MC-CDMA)信号识别算法。该方法先根据信号系统的基带物理结构和信号模型来建立信号相关函数的选择标准,然后估计出这些相关函数对应的四阶累积量,接着把四阶循环累积量跟信道的参数结合起来建立一个循环统计量,最后把这个循环统计量与检测门限进行比较,实现信号识别。计算机模拟仿真表明,该算法能在较低的输入信噪比条件下良好地工作。

关键词：空时分组码多载波码分多址循环累积量判决反馈最大期望

In vivo anticancer activity of maesopsin 4—O— β—glucoside isolated from leaves of Artocarpus tonkinensis *** Gagnep

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Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 343-348页

作者： Trinh Thi Thuy Dao Duc Thien Tran quang Hung Nguyen thanh Tam Nguyen Thi Hoang Anh Nguyen Thi Nga Nguyen Thi Cuc Le Phuong Mai Tran Van Sung Domenico V.Delfino Do Thi Thao Institute of Chemistry.Vietnam Academy of Science and Technology Institute of Biotechnology Vietnam Academy of Science and Technology National Research Council Canada Measurement Science and Standards1200 Montreal RoadBuilding M-12.Ottatca.Ontario KIA OR6 Department of Medicine University of PerugiaPiazzale Gambuli.S.Andrea delle Fratte

Objective:To investigate the antitumor effect of maesopsin 4-O-β-glucoside(TAT2) isolated from the leaves of Artocarpus tonkinensis(***) *** ***:The antitumor activity of TAT2 was evaluated in Lewis lung carcinoma(LLC) tumor-bearing ***/c mice had tumors induced by implantation with 2× 10~6 LLC cells into the subcutaneous right posterior ***-bearing mice were treated orally with a range of doses of TAT2 and a standard drug,*** were observed for tumor growth and mortality *** was collected to determine hematological and biochemical *** TAT2 was isolated from an ethanolic extract of *** *** structure was determined by MS and NMR spectroscopy,and identified as *** compound did not show acute toxicity at the highest dose tested(2 OIK) mg/kg body weight).TAT2 exhibited antitumor activity by decreasing tumor growth,increasing the survival rale,and ameliorating some hematological and biochemical parameters at doses of 100 and 200 mg/kg body weight(P<0.05).Conclusions:These results indicate that TAT2 possesses clear antitumor *** to its bioavailability and low toxicity,and the fact that it could be isolated in a large scale from *** leaves,the compound shows promise as a potential anticancer drug.

关键词： Artocarpus tonkinensis BALB/c Hematological parameters Lewis lung carcinoma Maesopsin 4-0-β-glucoside

Adaptive Controller Design for Dynamic Maneuvers of High Speed Underwater Vehicles

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China Ocean Engineering 2022年第2期36卷 311-321页

作者： bui Duc Hong PHUC Sam-Sang YOU Phuc Thinh DOAN Sang-Do LEE Department of Mechanical Engineering The University of TulsaTulsaOK 74104USA Division of Mechanical Engineering Korea Maritime and Ocean UniversityBusan 49112Republic of Korea Institute of Interdisciplinary Social Sciences Nguyen Tat Thanh UniversityHo Chi Minh CityVietnam Division of Navigation and Information System Mokpo National Maritime UniversityMokpoJeollanam-do 58628Republic of Korea

The control synthesis of the high-speed underwater vehicle faces many technical challenges due to its inherent structure and surrounding operational *** this paper,the dynamical behavior is firstly described through a bifurcation analysis to give some insights for robust control *** a novel adaptive fractional-order sliding mode controller(AFOSMC)is realized to effectively manipulate the supercavitating vehicle against payload changes,nonlinear planing force,and external *** fractional order(FO)calculus can offer more flexibility and more freedom for tuning active control synthesis than the integer-order *** addition,the adaptation law has been presented to directly handle the payload change *** stability of the controlled vehicle system is proven via Lyapunov stability ***,the dynamic performance of the proposed controller is verified through extensive simulation results,which demonstrate the control accuracy with faster responses compared with existing integer-order ***,the proposed fractional order controllers can provide higher performance than their integer order counterparts with control algorithms.

关键词： fractional order calculus supercavitating underwater vehicles planing force payload change adaptive sliding mode control

Marker-Assisted Selection of Xa21 Conferring Resistance to Bacterial Leaf Blight in indica Rice Cultivar LT2

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Rice science 2018年第1期25卷 52-56页

作者： Hue Thi NGUYEN quang Hong VU Tan Van MAI Thu Thi NGUYEN Lam Duc VU Tung thanh NGUYEN Long Viet NGUYEN Hien Thu Thi VU Hue Thi NONG Trung Nguyen DINH Nakano TOSHITSUGU Liet Van VU Crop Research and Development Institute Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Agronomy Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Biotechnology Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Land Management Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Japan International Cooperation Agency 16 Phan Chu Trinh Hoan Kiem Hanoi 10000 Vietnam

Bacterial leaf blight of rice (BLB), caused by Xanthomonas oryzae pv. oryzae, is one of the most destructive diseases in Asian rice fields. A high-quality rice variety, LT2, was used as the recipient ***21, which carries the Xa21 gene, was used as the donor parent. The resistance gene Xa21 was introduced into LT2 by marker-assisted backcrossing. Three Xoo races were used to inoculate the improved lines following the clipping method. Eleven BC_3F_3 lines carrying Xa21 were obtained based on molecular markers and agronomic performance. The 11 lines were then inoculated with the three Xoo races. All the 11 improved lines showed better resistance to BLB than the recipient parent LT2. Based on the level of resistance to BLB and their agronomic performance, five lines (BC_3F_3 5.***.5.1, BC_3F_3 5.***.5.12, BC_3F_3 8.***.6.44, BC_3F_3 9.***.4.1 and BC_3F_3 9.***.4.23) were selected as the most promising for commercial release. These improved lines could contribute to rice production in terms of food security.

关键词： rice backcrossing bacterial leaf blight marker-assisted selection

Effects of NaOH Concentrations on Properties of the Thermal Power Plant Ashes-Bricks by Alkaline Activation

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Journal of Wuhan University of Technology(Materials Science) 2020年第1期35卷 131-139页

作者： Ngo Si-Huy Le Thi thanh-Tam Huynh Trong-Phuoc Department of Engineering and Technology Hong Duc UniversityNo.565Quang Trung StreetDong Ve WardThanh Hoa City 440000Viet Nam Department of Rural Technology College of Rural DevelopmentCan Tho UniversityCampus II3/2 StreetNinh Kieu DistrictCan Tho City 900000Viet Nam

The use of the thermal power plant ashes including fly ash(FA) and bottom ash(BA) for producing unfired building bricks(UBB) using sodium hydroxide(NaOH) solution as an alkaline activator was investigated. A low applied forming pressure of 0.5 MPa and various NaOH concentrations of 5, 8, 10, and 12 M were used for the preparation of brick samples with different solution-to-binder(S/B) ratios of 0.35 and 0.40. The bricks were subjected to various test programs with reflecting the effect of both NaOH concentrations and S/B ratios on the brick’s properties. The compressive strength, unit weight, ultrasonic pulse velocity, and thermal conductivity of bricks increased with increasing NaOH concentration, whereas the contrary trend was found with increasing S/B ratio. Also, the water absorption of bricks was observed to reduce with increasing NaOH concentration and decreasing S/B ratio. As the results, the combined utilization of both low forming pressure and coal power plant ashes can produce the UBBs with low unit weight, low heat conductivity, and acceptable strength and water absorption rate as stipulated by TCVN 6477-2016. Furthermore, the outcomes of chemical analysis and microstructure observation also demonstrate that a high concentration of the Na OH promoted the geopolymerization process. Notably, the use of NaOH solution of either 10 M or above is recommended for the production of UBBs, which are classified as grade M5.0 or higher.

关键词： unfired building brick fly ash bottom ash thermal power plant ashes sodium hydroxide solution low forming pressure

OSTBC MC-CDMA上行链路基带信号盲处理

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OSTBC MC-CDMA上行链路基带信号盲处理

作者：裴光盅（bui quang Chung）重庆邮电大学

学位级别：硕士

多载波码分多址(Multi-carrier Code Division Multiple Access, MC-CDMA)技术是由正交频分复用(Orthogonal Frequency Division Multiplexing, OFDM)技术跟码分多址(Code Division Multiple Access, CDMA)技术结合起来形成的一个5G备选方案之一。MC-CDMA不仅保留了OFDM和CDMA的许多优势，而且弥补了各自的不足之处。空时编码技术的主要思想就是将天线发送分集的关键技术跟信道编码技术和调制技术有机地结合起来，所以空时编码在衰落信道的传输效果要好得多。如果将空时编码和MC-CDMA结合起来成一个空时分组码多载波码分多址(Space-time Block Coding Multi-carrier Code Division Multiple Access, STBCMC-CDMA)的新系统，可以使一个宽带MC-CDMA系统获得发射分集，并且有效地解决信道衰落、提高通信系统的可靠性等问题。STBC MC-CDMA信号处理包括信号峰值平均功率比(峰均比)抑制预处理、信号参数估计、信号识别等方面。在高速率、低信噪比与恶劣环境下对其进行处理，将对下一代无线通信系统的传输与接收处理产生重大的意义。高峰均比信号往往会超出系统功率放大器的线性范围，功率的利用率很差，导致系统性能的降低。另一方面，在多输入多输出(Multiple-input Multiple-output, MIMO)系统中，空时编码类型识别对接收端的信号解码、信号检测与后处理阶段十分重要。本文针对线性正交空时分组码多载波码分多址(Orthogonal STBC MC-CDMA,OSTBC MC-CDMA)的峰均比抑制和信号识别两个问题进行研究。本论文具体工作如下：1.介绍了OSTBC MC-CDMA信号模型与该信号的主要特性。2.针对MC-CDMA系统峰均比的问题，提出了利用改进的动态星座扩展(ActiveConstellation Extension, ACE)与粒子群优化(Particle Swam Optimization, PSO)相结合的算法来抑制该信号峰均比。该算法先利用改进ACE算法对信号进行处理，在处理过程当中，利用PSO算法寻找最优试探切峰门限，即各个子载波的峰均比分别作为试探切峰门限，迭代搜索得到让系统峰均比最小的最佳试探切峰门限，即满足预先设置的峰均指标。3.针对STBC MC-CDMA信号盲识别的问题，提出了一种利用循环稳定特性来实现STBC与垂直分层空时码(Vertical Belllayered Space-time Code, VBLAST)信号识别的算法。该法先建立了信号相关函数的选择标准，接着估计出来这些相关函数对应的四阶累积量，然后把四阶循环累积量跟信道的参数结合起来去建立一个循环统计量，最后根据循环频率的检测提取检测门限跟这个循环统计量进行比较做判决实现识别。4.针对OSTBCMC-CDMA类型盲识别的问题，提出一种基于鲁棒竞争聚类的实正交空时分组码盲识别算法。算法先建模得到了与虚拟信道矩阵相关的接收信号模型，然后利用鲁棒竞争聚类算法估计出虚拟信道矩阵，再者根据实正交空时分组码的特性，提出虚拟信道矩阵的相关矩阵的稀疏度和非主对角元素能量与主对角元素能量之比的能量比的识别特征参数，最后利用此参数判决码型。

关键词：正交空时分组码多载波码分多址峰值平均功率比鲁棒竞争聚类四阶循环累积量

Assessing Satellite-Based Precipitation Products to Create Flood Forecasting in the Da River Basin, Vietnam

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Journal of Geoscience and Environment Protection 2019年第11期7卷 113-123页

作者： Le Viet Son Luong Ngoc Chung bui Tuan Hai Sai Hong Anh Nguyen Duy quang Division for Water Resources Planning for the North Region Institute of Water Resources Planning Hanoi Vietnam Board of directors Institute of Water Resources Planning Hanoi Vietnam Department of Agro-Environmental Sciences Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan

The Da River Basin is an international basin where available access to hydrological data is limited;it has a total basin area of 52,900 km2, about 50% of the area in which it is located, Vietnam. The Da River is the primary source of water for agriculture in 25 provinces and cities, and the primary source of drinking water for more than 30 million people in both urban and rural areas. It has huge economic and historical value. However, flood forecasting for the Da River basin has not been adequately addressed yet because of the challenge of the inconsistency, scarcity, poor spatial representation, as well as difficult access and incompleteness of the availability of ground observed rainfall data. In this research, the IFAS model has been utilized to assess the benefits of using satellite-based precipitation products to create flood forecasting for the whole research area. The results showed that the Integrated Flood Analysis System (IFAS) model was able to integrate the satellite-based precipitation products for simulating the flood event in the Da River basin. Also, the 3B42RT algorithm showed a definite improvement in reproducing the flood peak and low flow very well in the research area. These results could be used to enhance the effectiveness of flood management strategy in the basin.

关键词： IFAS Flood Flow 3B42RT and GSMaP Algorithm

越南苦苣苔科石蝴蝶属植物随记暨国家级分布新记录

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广西植物 2020年第10期40卷 1409-1416页

作者： TRAN Thi Phuong Anh bui Hong quang NGUYEN Khang Sinh AVERYANOV Leonid 温放越南科学技术研究院科学技术研究生院越南河内10000 广西喀斯特植物保育与恢复生态学重点实验室广西壮族自治区中国科学院广西植物研究所中国广西桂林541006 越南科学技术研究院生态与生物资源研究所越南河内10072 俄罗斯科学院科马罗夫植物研究所圣彼得堡俄罗斯中国科学院桂林植物园中国苦苣苔科植物保育中心中国广西桂林541006 中国科学院植物资源保护与可持续利用重点实验室中国科学院华南植物园中国广州510650

石蝴蝶属(Petrocosmea Oliv.)植物的现代分布与分化中心位于中国的西南山地以及周边国家和地区,如印度(阿萨姆邦)、缅甸、泰国、越南等也有分布。近年来,中国和中南半岛上各个国家和地区的新分类群和国家级新记录层出不穷,进一步加深了... 详细信息

石蝴蝶属(Petrocosmea Oliv.)植物的现代分布与分化中心位于中国的西南山地以及周边国家和地区,如印度(阿萨姆邦)、缅甸、泰国、越南等也有分布。近年来,中国和中南半岛上各个国家和地区的新分类群和国家级新记录层出不穷,进一步加深了研究人员对中国和中南半岛植物区系以及该属植物在上述区域的多样性的理解。例如,滇黔石蝴蝶\[Petrocosmea martinii (H. Léveillé) H. Léveillé\]和丝毛石蝴蝶(P. sericea C.Y. Wu ex H. W. Li)曾被认为是中国的特有种,前者分布于贵州、广西北部和云南东南部,而后者仅见于云南东南部。该文报道了这两种石蝴蝶属植物的越南国家级分布新记录。这两个新记录种的发现,使得越南分布的石蝴蝶属植物种的数量上升到了5种,这些新记录种的报道或暗示未来在与中国西南山地邻近的地区还将会有更多该属的新分类群或新记录有待发现。该文还同时提供了这两个国家级分布新记录物种的描述、图示、濒危等级现状评价以及目前所有越南已知分布的石蝴蝶属植物的检索表以备检索和核对。

关键词：越南北部越南石蝴蝶属植物检索表越南植物区系中国植物区系