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Households’ Willingness-to-Pay to Reduce the Use of Plastic Bags: Case Study in Viet Nam

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Journal of Environmental Protection 2022年第3期13卷 289-298页

作者： Nguyen Van Song Nguyen Minh Hieu Vu Ngoc Huyen Nguyen dang Que Nguyen Van Huong Bui thi Minh Nguyet Viet Nam National University of Agriculture (VNUA) Ha Noi Viet Nam National Academy of Public Administration (NAPA) Ha Noi Viet Nam Hung Yen University of Technology and Education (UTEHY) Hung Yen Viet Nam Vietnam National University of Forestry Xuan Mai Ha Noi Vietnam

this study used the Binary Logistic regression model to estimate the willingness to pay (WTP) to reduce the use of plastic bags in the daily life of people in the linh Nam ward. this study notes that households with higher incomes and higher levels of education tend to be more willing to pay. In addition, those who do not have access to information about the harmful effects of plastic bags and receive a higher proposed price often refuse to pay.

关键词： Binary Logistic Regression Willingness to Pay Plastic Bags

越南汉语初级阶段学生习得汉语时间副词偏误分析及教学对策研究

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越南汉语初级阶段学生习得汉语时间副词偏误分析及教学对策研究

作者：阮邓垂翎（Nguyen dang Thuy linh）大连外国语大学

学位级别：硕士

外语对学生来说是一门非常难学的科目,尤其是语法方面更难。汉语时间副词数量较多,汉语时间副词与越南语对应词有相似之处也有不同之处。因此,处于越南汉语初级阶段的学生在习得汉语时间副词时难以把握其知识点,并在使用的过程中容易产... 详细信息

外语对学生来说是一门非常难学的科目,尤其是语法方面更难。汉语时间副词数量较多,汉语时间副词与越南语对应词有相似之处也有不同之处。因此,处于越南汉语初级阶段的学生在习得汉语时间副词时难以把握其知识点,并在使用的过程中容易产生偏误,成为一道难题。因此本研究采用问卷调查法、对比分析访谈法、偏误分析法等,对越南汉语初级阶段学生习得汉语时间副词情况展开研究分析。同时提出针对性的教学对策,为提高越南学生的汉语能力贡献一份绵薄之力。本文绪论主要阐述了论文的研究缘起、文献综述、研究方法和语料来源。第一章概况汉语时间副词和越南语时间副词的特征和概念,分析汉语和越南语时间副词的概念、分类以及汉语时间副词的语法功能。第二章对13个汉语时间副词“先”、“刚”、“正”、“在”、“正在”、“就”、“一直”、“已经”、“才”、“快”、“马上”、“曾经”、“立即”与越南语对应词进行对比,找出它们之间的异同点。第三章从越南汉语初级阶段学生习得13个汉语时间副词的实际情况出发,调查越南汉语初级阶段学生使用13个汉语时间副词偏误情况。第四章指出导致这些偏误的原因,包括客观因素和主观因素。第五章基于这些原因,提出了适当的纠正建议,以克服越南汉语初级阶段学生习得汉语时间副词的偏误。

关键词：初级汉语阶段越南学生汉语时间副词习得偏误分析教学对策

Imaging volumes during COVID-19:A Victorian health service experience

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World Journal of Radiology 2022年第8期14卷 293-310页

作者： Jo-Anne Pinson my linh Diep Vinay Krishnan Caroline Aird Cassie Cooper Christopher Leong Jeff Chen Nicholas Ardley Eldho Paul Mohamed Khaldoun Badawy Monash Health Imaging Monash HealthClaytonVictoria 3168Australia Department of Medical Imaging Peninsula HealthMelbourneVictoria 3099Australia Department of Medical Imaging and Radiation Sciences School of Allied Health CareFaculty of MedicineNursing and Health SciencesMonash UniversityClaytonVictoria 3800Australia Department of Epidemiology and Preventive Medicine School of Public Health and Preventive MedicineMonash UniversityMelbourneVictoria 3800Australia

BACKGROUND The World Health Organisation declared the coronavirus disease 2019(COVID-19)a pandemic on March 11,*** globally,the relative caseload has been high,Australia’s has been relatively *** the pandemic,radiology services have seen significant changes in workflow across modalities and a reduction in imaging *** To investigate differences in modality imaging volumes during the COVID-19 pandemic across a large Victorian public health *** A retrospective analysis from January 2019 to December 2020 compared imaging volumes across two periods corresponding to the pandemic’s first and second *** volumes across patient class,modality and mobile imaging were summed for periods:wave 1(weeks 11 to 16 for 2019;weeks 63 to 68 for 2020)and wave 2(weeks 28 to 43 for 2019;weeks 80 to 95 for 2020).Microsoft Power Business Intelligence linked to the radiology information system was used to mine all completed *** Summed weekly data during the pandemic’s first wave showed the greatest decrease of 29.8%in adult outpatient imaging volumes and 46.3%in paediatric emergency department imaging *** nuclear medicine demonstrated the greatest decrease of 37.1%for the same *** nuclear medicine showed the greatest decrease of 47.8%,with angiography increasing by 50%.The pandemic’s second wave demonstrated the greatest decrease of 23.5%in adult outpatient imaging volumes,with an increase of 18.2%in inpatient imaging *** greatest decrease was 28.5%in paediatric emergency department imaging *** medicine showed the greatest decrease of 37.1%for the same *** nuclear medicine showed the greatest decrease of 36.7%.Mobile imaging utilisation increased between 57.8%and 135.1%during the first and second waves.A strong correlation was observed between mobile and nonmobile imaging in the emergency setting(Spearman’s correlation coefficient=-0.743,P=0.000).No correlation was observed in

关键词： COVID-19 Pandemic Radiology Imaging volume Modality Mobile imaging

渭南市玉米大豆带状复合种植模式下玉米品种筛选试验

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中国种业 2024年第7期 82-88页

作者：王楠王树星薛韦婷党润海张渭薇尚杰陕西省渭南市农业科学研究院渭南714000 陕西省蒲城县农业技术推广中心蒲城715500 陕西省合阳县农业技术推广中心合阳715300

为了筛选最适宜渭南市玉米/大豆带状复合种植模式下种植的玉米品种,在2行玉米4行大豆种植模式下,以9个玉米品种(郑单958、陕单650、陕单660、西蒙168、金科玉3306、中玉303、东单1331、陕单630、黄金粮my73),大豆品种齐黄34为试验材料,... 详细信息

为了筛选最适宜渭南市玉米/大豆带状复合种植模式下种植的玉米品种,在2行玉米4行大豆种植模式下,以9个玉米品种(郑单958、陕单650、陕单660、西蒙168、金科玉3306、中玉303、东单1331、陕单630、黄金粮my73),大豆品种齐黄34为试验材料,进行玉米品种的筛选,对9个玉米品种的生育期、主要农艺性状、产量及经济效益进行综合比较。结果表明:陕单650、西蒙168、黄金粮my73综合农艺性状好,生育期适宜,产量优势大,每667m2产量分别达564.6kg、560.5kg、563.4kg,在带状复合种植模式下纯经济效益可观,分别为1395.7元、1385.6元、1392.8元,可以作为陕西省渭南市玉米/大豆带状复合种植的玉米品种进行推广。

关键词：玉米大豆带状复合种植玉米品种筛选试验 2行玉米4行大豆

Biomass accumulation of Panax vietnamensis in cell suspension cultures varies with addition of plant growth regulators and organic additives

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Asian Pacific Journal of Tropical Medicine 2017年第9期10卷 907-915页

作者： Tuan Tran Trong Dieu-Hien Truong Hoang Chinh Nguyen Dieu-Thai Tran Huyen-Trang Nguyen thi Giap Do dang Ho Nguyen Huu Plant Cell Technology Department Institute of Tropical BiologyVietnam Academy of Science and Technology9/621 Ha Noi HighwayLinh TrungThu DucHo Chi Minh CityViet Nam Faculty of Applied Sciences Ton Duc Thang University19 Nguyen Huu ThoTan PhongDistrict 7Ho Chi Minh CityViet Nam Genetic Engineering Department Institute of Tropical BiologyVietnam Academy of Science and Technology9/621 Ha Noi HighwayLinh TrungThu DucHo Chi Minh CityViet Nam

Objective: To evaluate the impact of plant growth regulators including kinetin(KN),benzyl adenine and naphthalene acetic acid, yeast extract and casein hydrolyzate on biomass accumulation of Vietnamese ginseng Panax vietnamensis(P. vietnamensis) in cell suspension ***: Cell suspension cultures were established from friable calluses derived from leaves and petioles of 3-year-old in-vitro P. vietnamensis plants. The cell suspension cultures were grown in Murashige and Skoog basal media supplemented with various concentrations of KN, benzyl adenine, naphthalene acetic acid, and yeast extract and casein ***: All tested factors generated an increase in the cell biomass of P. vietnamensis in suspension culture, but the impact of each varies depended on the factor type, concentration, and incubation period. Addition of 2.0 mg/L KN resulted in the largest biomass increase after 24 d,(57.0 ± 0.9) and(3.1 ± 0.1) mg/m L fresh and dry weight, respectively,whereas addition of benzyl adenine or naphthalene acetic acid produced optimum levels of Panax cell biomass at 1.0 and 1.5 mg/L, respectively. Addition of the elicitor yeast extract led to a 1.4–2.4 fold increase in biomass of P. vietnamensis, while addition of casein hydrolyzate enhanced biomass accumulation 1.8–2.6 ***: The addition of each factor causes significant changes in biomass accumulation of P. vietnamensis. The largest biomass accumulation is from cultures grown in MS media containing 2.0 mg/L KN for 24 d. The outcome of the present study provides new insights into the optimal suspension culture conditions for studies on the in vitro cell biomass production of P. vietnamensis.

关键词：人参属 vietnamensis 种房间暂停文化种管理者酵母摘录酷蛋白 hydrolyzate 生物资源

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2011年以来越南与南非贸易合作研究

2011年以来越南与南非贸易合作研究

作者：邓玉龄（linh dang NGOC linh）云南大学

学位级别：硕士

从20世纪下半叶到现在,贸易自由化的趋势一直非常强烈。面对全球化浪潮,各国正不断努力扩大各种双边和多边合作活动,越南也不例外。贸易活动在越南经济中扮演着重要角色。但是,在国际贸易背景下,特别是国际经济在多方面发生变化的情况下... 详细信息

从20世纪下半叶到现在,贸易自由化的趋势一直非常强烈。面对全球化浪潮,各国正不断努力扩大各种双边和多边合作活动,越南也不例外。贸易活动在越南经济中扮演着重要角色。但是,在国际贸易背景下,特别是国际经济在多方面发生变化的情况下,越南国际贸易伙伴的结构也发生了一定的变动。除了与美国和欧盟等传统伙伴保持和发展贸易合作关系外,越南还一直积极拓展与新伙伴的关系。在最近一段时间,越南政府为扩大与非洲,特别是与越南在非洲多年来的第一大贸易伙伴——南非的合作关系作出了巨大努力。发展与南非的贸易关系将是越南深入非洲12亿人口市场中的重要一步。除此之外,贸易合作领域中的成功也为两国之间的文化、政治和经济合作活动创造了一定的便利。本论文的主要内容如下:首先,论文对越南与南非在1992-2010年期间的贸易关系历史进行概述,然后与1992-2010年阶段进行比较,论文对2011-2018年期间两国间的贸易发展现状进行了分析,同时指出了两国主要出口产品的贸易强度指数和显示性比较优势指数。在分析了现状之后,论文得出了2011-2018年期间两国间贸易关系的共同特点。其次,论文指出了开展两国贸易关系的有利条件与制约因素。第三,论文通过分析影响双边贸易关系的潜在因素,对未来越南与南非之间的贸易关系进行了预测和展望。最后,论文根据一系列描述性分析和定量性分析结果,从政府和企业两个层面分别给予了促进越南对南非双边贸易发展的有效性建议。通过分析越南与南非自2011年以来的贸易关系,论文得出以下四个主要特点:首先,在两国间贸易情况的现实基础之上,两国之间的贸易关系完全有能力继续扩大)。第二,双边贸易关系将在未来呈现出增长趋势,各方将继续专注于生产和出口两国具有更大比较优势的商品,这点将通过RCA指数来体现。第三,总体而言,越南和南非仍然不是彼此的战略贸易伙伴,但是双方之间的合作潜力巨大。最后,诸如CPTPP、RCEP、AEC、TFTP和AFCFTA等多边自由贸易协定的出现将对未来两国的贸易产生影响。

关键词：越南南非贸易合作

Geology,Fluid Inclusion and Isotopic Study of the Neoproterozoic Suoi Thau Copper Deposit,Northwest Vietnam

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Acta Geologica Sinica(English Edition) 2016年第3期90卷 913-927页

作者： TRAN mydung LIU Junlai LI Xiaochun dang mycung General Department of Geology and Minerals of Viet Nam HanoiVietnam State Key Laboratory of Geological Processes and Mineral Resources China University of GeoseieneesBeijing 10083China Department of Earth Sciences The University of Hong KongChina Department of Science and Technology Ministry of Natural Resources and Environment of the Socialist Republic of VietnamHanoiVietnam

The Sin Quyen-Lung Po district is an important Cu metallogenic province in Vietnam, but there are few temporal and genetic constraints on deposits from this belt. Suoi Thau is one of the representative Cu deposits associated with granitic intrusion. The deposit consists of ore bodies in altered granite or along the contact zone between granite and Proterozoic meta-sedimentary rocks. The Cu-bearing intrusion is sub-alkaline I-type granite. It has a zircon U-Pb age of ~776 Ma, and has subduction-related geochemical signatures. Geochemical analysis reveals that the intrusion may be formed by melting of mafic lower crust in a subduction regime. Three stages of alteration and mineralization are identified in the Suoi Thau deposit, i.e., potassic alteration; silicification and Cu mineralization; and phyllic alteration. Two-phase aqueous fluid inclusions in quartz from silicification stage show wide ranges of homogenization temperatures （140-383℃） and salinities （4.18wt%- 19.13wt%）. The high temperature and high salinity natures of some inclusions are consistent with a magmatic derivation of the fluids, which is also supported by the H-O-S isotopes. Fluids in quartz have JD values of-41.9‰ to -68.8%. The fluids in isotopic equilibrium with quartz have j180 values ranging from 7.9‰ to 9.2%. These values are just plotted in the compositional field of magmatie- hydrothermal fluids in the ~Dwater versus jlSOwater diagram. Sulfide minerals have relatively uniform j34S values from 1.84%o to 3.57%0, which is supportive of a magmatic derivation of sulfur. The fluid inclusions with relatively low temperatures and salinities most probably represent variably cooled magmatic-hydrothermal fluids. The magmatic derivation of fluids and the close spatial relationship between Cu ore bodies and intrusion suggest that the Cu mineralization most likely had a genetic association with granite. The Suoi Thau deposit, together with other deposits in the region, may define a Neoproterozoic subduct

关键词： Suoi Thau deposit Fan Si Pan belt copper ore deposit subduction related mineralization

Tranexamic acid for intracerebral haemorrhage within 2 hours of onset: protocol of a phase Ⅱ randomised placebo-controlled double-blind multicentre trial

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Stroke & Vascular Neurology 2022年第2期7卷 158-165页

作者： Nawaf Yassi Henry Zhao Leonid Churilov Bruce C V Campbell Teddy Wu Henry Ma Andrew Cheung Timothy Kleinig Helen Brown Philip Choi Jiann-Shing Jeng Annemarei Ranta Hao-Kuang Wang Geoffrey C Cloud Rohan Grimley Darshan Shah Neil Spratt Der-Yang Cho Karim Mahawish Lauren Sanders John Worthington Ben Clissold Atte Meretoja Vignan Yogendrakumar Mai Duy Ton Duc Phuc dang Nguyen Thai my Phuong Huy-Thang Nguyen Chung Y Hsu Gagan Sharma Peter J Mitchell Bernard Yan Mark W Parsons Christopher Levi Geoffrey A Donnan Stephen M Davis Department of Medicine and Neurology Melbourne Brain Centre at The Royal Melbourne HospitalThe University of MelbourneParkvilleVictoriaAustralia Population Health and Immunity Division Walter and Eliza Hall Institute of Medical ResearchParkvilleVictoriaAustralia Ambulance Victoria MelbourneVictoriaAustralia Melbourne Medical School The University of MelbourneMelbourneVictoriaAustralia Stroke Division The Florey Institute of Neuroscience and Mental HealthParkvilleVictoriaAustralia Department of Neurology Christchurch HospitalChristchurchNew Zealand Department of Neurology Monash Medical CentreMonash UniversityClaytonVictoriaAustralia Department of Interventional Neuroradiology Liverpool HospitalLiverpoolNew South WalesAustralia Department of Neurology Royal Adelaide HospitalAdelaideSouth AustraliaAustralia Department of Neurology Princess Alexandra HospitalWoolloongabbaQueenslandAustralia Department of Neurology Box Hill HospitalEastern HealthBox HillVictoriaAustralia Stroke Centre and Department of Neurology National Taiwan University HospitalTaipeiTaiwan Department of Medicine Dunedin School of MedicineUniversity of OtagoWellingtonNew Zealand Department of Neurosurgery E-Da HospitalYanchaoKaohsiungTaiwan Department of Neurology Alfred HospitalMelbourneVictoriaAustralia Department of Clinical Neuroscience Monash University Central Clinical SchoolMelbourneVictoriaAustralia Department of Medicine Sunshine Coast University HospitalNambourQueenslandAustralia Department of Neurology Gold Coast University HospitalSouthportQueenslandAustralia Department of Neurology John Hunter HospitalThe University of NewcastleNewcastleNew South WalesAustralia Department of Neurosurgery China Medical University HospitalTaichungTaiwan Department of Internal Medicine Palmerston North HospitalPalmerston NorthNew Zealand Department of Neurology St Vincent's HospitalFitzroyVictoriaAustralia Department of Neurology Royal Prince Alfred HospitalCamperdownNew South WalesAustra

Rationale Haematoma growth is common early after intracerebral haemorrhage(ICH),and is a key determinant of *** acid,a widely available antifibrinolytic agent with an excellent safety profile,may reduce haematoma *** and design Stopping intracerebral haemorrhage with tranexamic acid for hyperacute onset presentation including mobile stroke units(STOP-MSU)is a phase Ⅱ double-blind,randomised,placebo-controlled,multicentre,international investigator-led clinical trial,conducted within the estimand statistical *** In patients with spontaneous ICH,treatment with tranexamic acid within 2 hours of onset will reduce haematoma expansion compared with *** size estimates A sample size of 180 patients(90 in each arm)would be required to detect an absolute difference in the primary outcome of 20%(placebo 39%vs treatment 19%)under a two-tailed significance level of *** adaptive sample size re-estimation based on the outcomes of 144 patients will allow a possible increase to a prespecified maximum of 326 *** Participants will receive 1 g intravenous tranexamic acid over 10 min,followed by 1 g intravenous tranexamic acid over 8 hours;or matching *** efficacy measure The primary efficacy measure is the proportion of patients with haematoma growth by 24±6 hours,defined as either≥33%relative increase or≥6 mL absolute increase in haematoma volume between baseline and follow-up CT *** We describe the rationale and protocol of STOP-MSU,a phase Ⅱ trial of tranexamic acid in patients with ICH within 2 hours from onset,based in participating mobile stroke units and emergency departments.

关键词： placebo centre absolute

Synthesis of Core-Shell Nanoparticles of Cu-Ag for Application in Electrohydrodynamic Printing Technique

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材料科学与工程（中英文A版） 2019年第2期9卷 75-82页

作者： Chinh Dung Trinh Dung my thi dang Chien Mau dang Institute for Nanotechnology Vietnam National University Ho Chi Minh City 800010 Vietnam The University of Science Vietnam National University Ho Chi Minh City 800010 Vietnam

Core-shell nanoparticles of Cu-Ag (Cu core and Ag shell) were synthesized using chemical method. Polyvinyl pyrrolidone (PVP) was used as a surfactant, and ascorbic acid (C6H8O6) and sodium borohydride (NaBH4) were used as reducing agents to reduce the metal complexes [Cu(NH3)4]^2+ and [Ag(NH3)2]^+. The results of transmission electron microscope (TEM) analysis, ultraviolet-visible spectroscopic (UV-Vis) analysis, X-ray diffraction (XRD) analysis showed that the core-shell nanoparticles of Cu-Ag were successfully synthersized. The average particle size was 32 nm. The dispersion of the nanoparticles was still good after 80 days without the formation of the oxides of Cu and Ag. The properties of the nanoparticles suggested that they were suitable to be used as an electrically conductive material for conductive ink-jet printing inks.

关键词： Nanoparticles nano bimetal Ag nanoparticles