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Comparative Chemical Research in Essential Oils from Six Apiaceae Species Growing in the Northern Region of Vietnam

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1677-1687页

作者： nguyen Quang Hung nguyen Thanh Tung nguyen Phuong Hanh Chu thi Thu Ha nguyen thi Nhung nguyen Thai An Vu xuan Giang Luong Van Hao Oleh Koshovyi Ain Raal Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology(VAST)Cau GiayHa Noi100000Viet Nam Graduate University of Science and Technology Vietnam Academy of Science and Technology(VAST)Cau GiayHa Noi100000Viet Nam Department of Pharmacognosy Faculty of Pharmacognosy and Traditional MedicineHanoi University of PharmacyHoan KiemHa Noi100000Viet Nam Sa Pa Research Center of Medicinal Materials National Institute of Medicinal MaterialsDien Bien PhuSa PaLao Cai330000Viet Nam Institute of Pharmacy Faculty of MedicineUniversity of TartuTartu50411Estonia

Our study aimed to compare the essential oil(EO)concentration and composition of several Apiaceae species growing in the Northern region of *** yields of EOs from materials ranged from 0.03%(root EO of Angelica acutiloba and aerial parts EO of Heracleum bivittatum)-0.27%(leaf EO of Xyloselinum vietnamense).Gas chromatography-mass spectrometry(GC-MS)allowed the identiﬁcation of 74 components in the EOs of six Apiaceae species,making up 94.4%–100.0%of the *** EO from Angelica acutiloba,(Z)-ligustilide accounted for an extremely large proportion(94.9%).EO of Angelica pubescens was dominated by six character-istic components includingα-pinene(21.5%),β-phellandrene(18.1%),p-cymene(12.2%),3-methylnonane(8.7%),o-cymene(8.1%),and D-sylvestrene(6.2%).The EO from Cryptotaenia japonica was characterized by high amounts ofα-selinene(48.7%),β-selinene(23.7%),and trans-β-farnesene(5.4%).The EOs from leaves and stems of Xyloselinum vietnamense were characterized by high concentrations of sabinene(69.8%and 33.8%),4-terpineol(8.7%and 7.4%)andβ-pinene(4.0%and 6.5%)while EOs from aerial parts and root of Xylo-selinum leonidii comprise four characteristic monoterpenes includingα-pinene(28.2%and 52.8%),β-pinene(7.9%and 10.3%),β-phellandrene(7.6%and 15.3%),and sabinene(3.0%and 4.1%).Additionally,cryptone is also one of the major components in the EO of Xyloselinum leonidii(13.2%in the aerial parts oil and 2.8%in the root oil).In the EOs isolated from the aerial parts and root of Heracleum bivittatum,α-pinene(22.5%and 70.2%)andβ-pinene(43.2%and 20.0%)were the predominant *** appeared in the EO from aerial parts of Heracleum bivittatum with a relatively high concentration(13.5%)while bornyl acetate(5.1%)was also one of the main components in the EO from its aerial parts but was not detected in other Apiaceae species in the present *** databases help identify and control the quality of plant material studied from the family Apiaceae growing in Vietnam.

关键词： Apiaceae essential oil terpenoids gaschromatography-mass spectrometry

越南政府对跨国关联企业基于转让定价逃税行为的监管研究

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越南政府对跨国关联企业基于转让定价逃税行为的监管研究

作者： nguyen xuan thi DIEP（阮春氏叶）湖南大学

学位级别：硕士

在各国一体化发展的趋势下,市场的开放和经济的深度融合给越南带来了许多优势,也为越南提供了许多吸引外国投资者的机会。尤其是近两年由于新冠疫情,越南的经济受到了严重影响,为了迅速恢复经济,越南政府对企业,特别是外资企业、跨国关... 详细信息

在各国一体化发展的趋势下,市场的开放和经济的深度融合给越南带来了许多优势,也为越南提供了许多吸引外国投资者的机会。尤其是近两年由于新冠疫情,越南的经济受到了严重影响,为了迅速恢复经济,越南政府对企业,特别是外资企业、跨国关联企业,颁布了许多税收优惠政策。但是,越南因此不得不面对许多企业利用政府税收优惠政策中的漏洞来逃税的情况,转让定价逃税行为便是这些漏洞之一。转让定价问题已成为整个国家管理特别是税收征收管理方面的主要问题,尽管近年来越南政府采取了多种措施,但相关监管政策效果并不明显。在上述背景下,本文综合运用文献研究法、比较分析方法、案例分析法、对策研究法等相结合来研究越南政府对跨国关联企业转让定价逃税的监管。在研究过程中,笔者确定了跨国关联企业在越南普遍实施的转让定价形式包括:夸大注册资产价值、夸大无形资产价值、高价从关联公司购买原材料以及低价出口、在不同国家分支机构之间转让、提高广告成本等。同时结合案例分析后可以看出目前越南确实存在跨国关联企业转让定价逃税行为的现状,其经济后果主要如下:税基侵蚀和利润转移、营造不健康和不公平的商业环境、资源的低效率分配、失去对企业的业务管理和资产控制权、增加贸易逆差和金融风险等。虽然近年来越南在跨国企业转让定价监管方面也有了一定成绩,但是仍然在法律制度、技术设施和数据、转让定价活动的关联和协调、税务组织结构管理等方面存在不足。针对上述问题,笔者在学习世界各国转让定价监管经验的基础上,提出了以下解决方案以提高越南政府对转让定价逃税行为监管能力:继续完善转让定价逃税行为监管的法律框架、指导实施转让价格的确定、建立交易价格数据库、构建行业平均利润率数据库、建设企业信息安全机制、细化税务机关职责权限的具体规定、出具预先定价协议实施方案、完善税务机关架构等。最后本文也提出了制度建设、政策执行、经济环境三方面的相关措施,从而减少跨国关联企业在越南转让定价行为。本文旨在通过对跨国关联企业在越南的转让定价逃税行为以及越南政府的相关监管现状的全方位分析,提供较为全面的改进建议,希望可以提高越南政府的监管能力,以及为各国家或地区起到借鉴作用。

关键词：跨国关联企业转让定价税务监管逃税

Investigation of crack segmentation and fast evaluation of crack propagation, based on deep learning

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 516-535页

作者： Than V.TRAN H.nguyen-xuan Xiaoying ZHUANG Institute of Photonics Leibniz University HannoverHannover 30167Germany CIRTech Institute HUTECH UniversityHo Chi Minh City 700000Vietnam College of Civil Engineering Tongji UniversityShanghai 200092China

Identifying crack and predicting crack propagation are critical processes for the risk assessment of engineering *** traditional approaches to crack modeling are faced with issues of high computational costs and excessive computing *** address this issue,we explore the potential of deep learning(DL)to increase the efficiency of crack detection and forecasting crack ***,there is no single algorithm that can fit all data sets well or can apply in all cases since specific tasks *** the paper,we present DL models for identifying cracks,especially on concrete surface images,and for predicting crack ***,SegNet and U-Net networks are used to identify concrete *** gradient descent(SGD)and adaptive moment estimation(Adam)algorithms are applied to minimize loss function during ***,time series algorithms including gated recurrent unit(GRU)and long short-term memory(LSTM)are used to predict crack *** experimental findings indicate that the U-Net is more robust and efficient than the SegNet for identifying crack segmentation and achieves the most outstanding *** evaluation of crack propagation,GRU and LSTM are used as DL models and results show good agreement with the experimental data.

关键词： deep learning crack segmentation crack propagation encoder−decoder recurrent neural network

Advancing Wound Filling Extraction on 3D Faces:An Auto-Segmentation and Wound Face Regeneration Approach

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： Duong Q.nguyen thinh D.Le Phuong D.nguyen Nga T.K.Le H.nguyen-xuan Department of Mathematics and Statistics Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied Research Institute for Science and Technology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound segmentation plays a crucial role in preoperative planning and optimizing patient outcomes in various medical *** this paper,we propose an efficient approach for automating 3D facial wound segmentation using a two-stream graph convolutional *** method leverages the Cir3D-FaIR dataset and addresses the challenge of data imbalance through extensive experimentation with different loss *** achieve accurate segmentation,we conducted thorough experiments and selected a high-performing model from the *** selectedmodel demonstrates exceptional segmentation performance for complex 3D facial ***,based on the segmentation model,we propose an improved approach for extracting 3D facial wound fillers and compare it to the results of the previous *** method achieved a remarkable accuracy of 0.9999993% on the test suite,surpassing the performance of the previous *** this result,we use 3D printing technology to illustrate the shape of the wound *** outcomes of this study have significant implications for physicians involved in preoperative planning and intervention *** automating facial wound segmentation and improving the accuracy ofwound-filling extraction,our approach can assist in carefully assessing and optimizing interventions,leading to enhanced patient ***,it contributes to advancing facial reconstruction techniques by utilizing machine learning and 3D bioprinting for printing skin tissue *** source code is available at https://***/SIMOGroup/WoundFilling3D.

关键词： 3D printing technology face reconstruction 3D segmentation 3D printed model

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现阶段越南大众体育的管理体制研究

武术研究 2018年第2期3卷 131-134页

作者：阮氏春芳越南北宁体育大学管理教研室越南北宁省121300

文章采用文献资料法、访谈法、社会调查法等研究方法调查、了解现阶段越南大众体育的管理体制。结果表明:现阶段,越南大众体育管理体制包括政府管理系统和社会管理系统,但以政府管理系统为主。政府管理系统从中央级覆盖到县级,乡镇级还... 详细信息

文章采用文献资料法、访谈法、社会调查法等研究方法调查、了解现阶段越南大众体育的管理体制。结果表明:现阶段,越南大众体育管理体制包括政府管理系统和社会管理系统,但以政府管理系统为主。政府管理系统从中央级覆盖到县级,乡镇级还没有正式的大众体育政府管理机构,只有文、社干部。在人力、财力、物力等各方面的资源,越南大众体育政府管理系统的实力还比较薄弱。社会管理系统已初步成立,但处于有名无实,基本上没有实际活动,大部分还是各类政府管理机构的"延伸",带有"半官方"性质的状况。政府与社会管理系统之间职能交叉、混乱,缺乏协调的运行机制。

关键词：越南管理体制大众体育现阶段

Pesticide Risk Reduction of Vegetable Farmers: A Case Study in Vietnam

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Journal of Environmental Protection 2021年第12期12卷 1055-1068页

作者： nguyen Van Song nguyen thi Thuy nguyen Cong Tiep Thai Van Ha nguyen Dang Que nguyen thi xuan Huong Vietnam National University of Agriculture Hanoi Vietnam National Academy of Education Management (NAEM) Hanoi Vietnam National Academy of Public Administration (NAPA) Hanoi Vietnam Vietnam National University of Forestry (VNUF) Hanoi Vietnam

A survey was carried out on farmers cultivating vegetables in Gia Lam district, Hanoi city, Vietnam to investigate their practice in reducing pesticide risks in their farming. Pesticides were an important input in the production there, but the risks of pesticides in recent years had been insignificant. Research results showed that the majority of farmers had relatively well implemented various solutions to reduce pesticides risks in their production, including actively using alternative pest management (IPM) solutions, using biological pesticides, using pesticides properly according to the 4-right pesticide use principle, using labour protection while spraying, and applying treatment measures after spraying. The study suggested solutions to reduce and avoid pesticide risks.

关键词： Pesticides Risk Reduction Vegetable Farming

Exponentially Bounded C-semigroup and the Cauchy Initial Value Problems in Complete Random Normed Modules

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Acta Mathematica Sinica,English Series 2024年第9期40卷 2195-2212页

作者： Son TA CONG Thang Dang HUNG Oanh Le thi Department of Mathematics University of ScienceVietnam National University 334 Nguyen TraiThanh XuanHanoiVietnam Faculty of Natural Sciences Hong Duc University565 Quang TrungDong VeThanh HoaVietnam

In this paper,the notion of C-semigroup of continuous module homomorphisms on a complete random normal(RN)module is introduced and *** existence and uniqueness of solution to the Cauchy problem with respect to exponen... 详细信息

关键词： C-semigroup Cauchy problem random normed modules L^(0)-Lipschitz

越南企业工作绩效评估公平性对员工满意度影响

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越南企业工作绩效评估公平性对员工满意度影响

作者：阮氏春禄（nguyen thi xuan Loc）湖南大学

学位级别：硕士

工作绩效评估是组织与工业心理学领域研究最广泛的主题之一。工作绩效评估系统可以令人对设计和结构方面印象深刻,但是在实践中可能没有效果。因为在实施工作绩效评估中,遇到使用者的一部分抗拒或者接受。所以工作绩效评估系统的效取决... 详细信息

工作绩效评估是组织与工业心理学领域研究最广泛的主题之一。工作绩效评估系统可以令人对设计和结构方面印象深刻,但是在实践中可能没有效果。因为在实施工作绩效评估中,遇到使用者的一部分抗拒或者接受。所以工作绩效评估系统的效取决于评估者和被评估者的的态度。以前的研究已经指出,工作绩效评估的公平性与员工对工作绩效评估的满意度有积极的关系。关于这个问题,已经有很多不同的方式和方法进行研究,但是大多数研究是在西方国家进行的,在这儿有文化和经济条件与发展中国家是不同的。因此,在应用这些研究时,发展中国家的管理者常常面对许多困难。在越南,跟工作绩效评估的公平性和员工的满意度有关的研究还有限,特别是在河内的企业。因此,这项研究的目的是了解在越南的背景下,工作绩效评估的公平性对员工的满意度有如何影响。同时,提出增加员工的满意度的解决方案,以提高工作效率并激励员工为公司做出贡献。该研究是对河内企业进行调查和评估。研究的目的包括:首先,基于理论基础和研究综述,建立工作绩效评估的公平性与员工对工作绩效评估的满意度关系的研究模型。其次,通过在河内企业实际考察的统计数据,了解企业的工作绩效评估,工作绩效评估的公平性和员工的满意度的现实情况。第三,把关在河内企业中工作绩效评估的公平性与员工对工作绩效评估的满意度的关系。第四,提出解决方案和建议以在河内企业中推出工作绩效评估的公平性,提高员工对工作绩效评估的满意度,也改善员工的工作效率,并提出进一步的研究方向。为了达到研究目的本作者已进行考察河内的员工。研究样本是237位员工正在河内企业工作,本作者通过描述统计,分析量表的可靠性,使用SPSS软件检验假设等等的主要步骤进行分析考察数据。研究结果表明:在河内企业的工作绩效评估中数据的公平性,程序的公平性,结果的公平性,对待的公平性与员工对工作绩效评估的满意度有呈正相关,并每个因素的影响程度是不同的,已经被确定。基于研究结果,本论文已经在河内企业中评估了工作绩效评估的现实状况,工作绩效评估的公平程度,对工作绩效评估的满意度。此外,本作者通过研究背景的状况和研究结果提出符合的解决方案以推出工作绩效评估的公平性,并提高员工对工作绩效评估的满意度。最后,除了以上的贡献,作者也指出研究的局限和提出了下一步的研究方向。

关键词：工作绩效评估的公平性员工的满意度对待的公平性数据的公平性结果的公平性程序的公平性

Effect of Freeze-Thaw and Urea in Solubility of GPC3-Csub Protein Expressed in Escherichia coli

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Journal of Biosciences and Medicines 2024年第4期12卷 288-297页

作者： xuan-Truc Chu-Dao Kim-Tuyen Huynh-Dam Dang-Thuc Ngo-Luong Quang-Luan Le Thanh-Thao Vo-nguyen Department of Medical Biotechnology Biotechnology Center of Ho Chi Minh City Ho Chi Minh City Vietnam

Glypican-3 is a protein encoded by the Glypican-3 gene located on human X chromosome (Xq26), composed of two subunits, a 40 kDa N-terminal subunit, and a 30 kDa C-terminal subunit. Glypican-3 is a currently potential target molecule for liver cancer treatments because of its over-expression and growth effects on hepatocellular carcinoma (HCC). this study examined the expression and purification of a C-terminal subunit of Glypican-3 protein (GPC3-Csub) due to its application in both diagnosis and therapy for hepatocellular carcinoma. The gene encoding for GPC3-Csub was successfully cloned into plasmid pET28a fused with an affinity tag composed of six consecutive histidine residues (His-tag). Recombinant protein GPC3-Csub was expressed in Escherichia coli BL21 (DE3) in the condition of adding 3% ethanol with IPTG induction. GPC3-Csub was extracted using repeated freeze-thaw cycles with lysozyme, and inclusion bodies were solubilized by 8M Urea, SDS 10% in pH 12. His-tag fused GPC3-Csub proteins allowed it to be purified by affinity chromatography method using the Nickel-nitrilotriacetic acid (Ni-NTA) column. High expression of GPC3-Csub was confirmed by Coomassie staining and western-blot. GPC3-Csub could be isolated with a Ni-NTA column and have a purity of about 90%.

关键词： Glypican-3 Affinity Chromatography Inclusion Body Liver Cancer