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Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests

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Journal of Forestry Research 2020年第5期31卷 1713-1722页

作者： 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 Research Institute for Sustainable Humanosphere Kyoto UniversityUjiKyotoJapan Silviculture Research Institute Vietnamese Academy of Forest SciencesNorth Tu LiemHanoiVietnam Center for Southeast Asian Studies Kyoto UniversityKyotoJapan vietnamese Academy of Forest Sciences North Tu LiemHanoiVietnam vietnam Administration of Forestry No.2 Ngoc HaBa DinhHanoiVietnam

Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest *** 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 *** results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of *** area and AGB are positively correlated with trees>30 cm *** 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^-*** percent of the areas surveyed had stand densities of 300–600 ***^-1,and 64%had basal areas of 20–40 m^2 ha^-*** is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in *** causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density.

关键词： Aboveground biomass Carbon storage Climatic variables Ecoregion Edaphic variables Oldgrowth forest

Determination of the orthometric height difference based on optical fiber frequency transfer technique

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Geodesy and Geodynamics 2021年第6期12卷 405-412页

作者： anh The Hoang Ziyu Shen Wen Bin Shen Chenghui Cai Wei Xu An Ning Yifan Wu School of Geodesy and Geomatics Wuhan UniversityWuhan 430079China School of Resource Environmental Science and EngineeringHubei University of Science and TechnologyXianningHubeiChina School of Agriculture and Natural Resource Vinh UniversityVinh City 460000Viet Nam State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Guangxi Key Laboratory of Spatial Information and Geomatics Guilin 541006China

The development of remote frequency transfer techniques,especially the appearance of optical clocks with unprecedented stability,has prompted geoscientists to study their applications in *** remote frequency transfer technique,by frequency comparison of two optical clocks at two points P and Q connected by optical fibers,one can measure the signal’s frequency shift between them,and the geopotential difference between them can be determined based on the gravity frequency shift *** the orthometric height of P,the orthometric height of Q can be *** the present stability of the optical clock has achieved 1×10^(-18) or better and comparing the frequency transfer via optical fiber provides stability at 10^(-19) level,the optical clock network enables determining the orthometric height at *** study provides a formulation to determine the height diffe rence at one-centimeter level between two points on the ground based on the optical fiber frequency transfer technique.

关键词： Optical fiber frequency transfer(OFFT) Optical fiber Frequency transfer Geopotential

培养基和植物生长调节剂对青钱柳悬浮细胞三萜产量的影响

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西南林业大学学报（自然科学） 2015年第1期35卷 6-11页

作者： NGUYEN Thi-xuyen 方升佐 NGUYEN Quang-ha 范龚健 NGO anh-son 邓波南京林业大学林学院江苏南京210037 越南北江农林大学森林学院北江236217

探讨培养基种类和植物生长调节剂配比对青钱柳悬浮细胞生长、总三萜和三萜单体含量及产量的影响。结果表明:MS+1.0 mg/L NAA+0.5 mg/L KT最适合青钱柳悬浮细胞生长,最终产量达到12.03 g/L;WPM+0.5 mg/L 2,4-D+0.3 mg/L NAA显著提高了青... 详细信息

探讨培养基种类和植物生长调节剂配比对青钱柳悬浮细胞生长、总三萜和三萜单体含量及产量的影响。结果表明:MS+1.0 mg/L NAA+0.5 mg/L KT最适合青钱柳悬浮细胞生长,最终产量达到12.03 g/L;WPM+0.5 mg/L 2,4-D+0.3 mg/L NAA显著提高了青钱柳悬浮细胞中总三萜的含量;青钱柳悬浮细胞中均能检出阿江榄仁酸、青钱柳酸B、齐墩果酸和熊果酸的存在,且阿江榄仁酸和青钱柳酸B含量较高,但基本培养基种类和不同植物生长调节剂组合对悬浮细胞中4种三萜单体含量无显著影响。青钱柳悬浮细胞中总三萜产量以MS+0.5 mg/L 2,4-D+0.3 mg/L NAA处理最高,而三萜单体产量均以MS+1.0 mg/L NAA+0.5 mg/L KT处理最高。

关键词：青钱柳悬浮细胞生物量总三萜三萜单体三萜产量

A New Species of Microhyla(Amphibia:Anura:Microhylidae)from Langbian Plateau,Central vietnam

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Asian Herpetological Research 2020年第3期11卷 161-182页

作者： Van Chung HOANG Mai anh LUONG Quang Truong NGUYEN Nikolai L.ORLOV Youhua CHEN Bin WANG Jianping JIANG Chinese Academy of Sciences(CAS)Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyCASChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China vietnam National Museum of Nature Vietnam Academy of Science and Technology18 Hoang Quoc Viet RoadHanoiVietnam Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology18 Hoang Quoc Viet RoadHanoiVietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau GiayHanoiVietnam Zoological Institute Russian Academy of SciencesUniversitetskaya nab 1St.Petersburg 199034Russia

We describe a new species,Microh yla hongiaoensis ***.,from Lam Dong Province,southern vietnam based on morphological data and molecular *** new species is sister to *** by molecular phylogenetics and also most closely resembles *** in morphological characteristics,albeit differs from its congeners by a combination of the following morphological features:(1)size medium(SVL 13.6-14.7 mm in males and 18.3-18.6 mm in females);(2)fingers Ⅱ-Ⅳ with small disks,dorsal surface of disks,without median longitudinal groove;(3)webbing formula Ⅰ11/2 Ⅱ1-2 Ⅲ1-21/2Ⅳ21/4-1 Ⅴ;(4)toe disks with dorsal median longitudinal groove;(5)dorsal back without two small black spots;(6)one small black spot adjacent behind the eyes;(7)few small black scapular spots in the flanks-belly and inguinal region;(8)palm with two small metatarsal tubercles;(9)tibiotarsal reaching beyond *** *** in evergreen montane tropical forests at an elevation of 1500 m a.s.l.

关键词： new species Microhyla Bi Doup-Nui Ba national

Physical activity and immunity in obese older adults:A systematic bibliographic analysis

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Sports Medicine and Health Science 2023年第3期5卷 181-189页

作者： Novita Intan Arovah Dang Thi anh Thu Juni Kurniawaty hartiah haroen Department of Sports Science Faculty of Sports ScienceUniversitas Negeri YogyakartaJalan Colombo No 1 KarangmalangYogyakarta55228Indonesia School of Science Faculty of Public HealthHue University of Medicine and Pharmacy06 Ngo QuyenVinh Ninh WardHue CityViet Nam Department of Anaesthesiology Faculty of MedicineUniversitas Gadjah MadaDepartemen Anestesiologi dan Terapi Intensif RSUP Dr.SardjitoJln.Kesehatan No.1SekipYogyakarta55231Indonesia Department of Nursing Faculty of NursingUniversitas PadjajaranHegarmanahKec.JatinangorKabupaten SumedangBandungJawa Barat45363Indonesia

Extensive research has been conducted on the roles of physical activity in immune ***,reviews on the effect of physical activity on immune function among obese older adults are *** study aimed to map the trend and development of the key terms and prominent sources to identify potential research opportunities through a systematic bibliographic analysis.A systematic search was conducted in the Scopus database on the following query:(sport^(*)OR“physical activity”OR exercise)AND(elderly OR“older adult^(*)”OR aging)AND(immun^(*))AND(obes^(*))AND NOT(animal),in March *** timing and citation were descriptively analyzed,followed by the bibliographic coupling and the term co-occurrence analyses for generating network and overlay visualization mapping using the VOSviewers *** search resulted in 426 articles dating back from 1991 to the present and were dominated by authors from Western *** thematic clusters of this research area were generated,covering(1)the impact of physical activity or inactivity on health,(2)physical activity assessments and the use of association and cross-sectional study as the primary type of research,and(3)the physical activity impacts at the population *** future research,more intervention studies are needed to understand how exercise affects immune response in older obese adults and to explore optimal duration,type,and intensity of the exercise,using a multi-omics *** in non-Western populations and systematic reviews are recommended to complement this bibliographic analysis.

关键词： Aging Exercise Sports Obesity Immune responses

High-efficiency single and tandem fullerene solar cells with asymmetric monofluorinated diketopyrrolopyrrole-based polymer

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Journal of Energy Chemistry 2022年第1期31卷 236-245,I0007页

作者： Shafket Rasool Quoc viet Hoang Doan Van Vu Chang Eun Song hang Ken Lee Sang Kyu Lee Jong-Cheol Lee Sang-Jin Moon Won Suk Shin Institute of Chemical Technology(KRICT) 141 Gajeong-roYuseongDaejeon 34114Republic of Korea Advanced Materials and Chemical Engineering University of Science and Technology(UST)217 CajeongroYuseongDaejeon 34113Republic of Korea vietnam Standards and Quality Institute(VSQI) Directorate for StandardsMetrology and Quality(STAMEQ)No.8.Hoang Quoc VietCau GiayHanoiViet Nam

Design and synthesis of low bandgap(LBG) polymer donors is inevitably challenging and their processability from a non-halogenated solvent system remains a hurdle to overcome in the area of highperformance polymer solar cells(PSCs).Due to a high aggregation tendency of LBG polymers,especially diketopyrrolopyrrole(DPP)-based polymers coupled with bithiophenes in the polymer backbones,their widespread adoption in non-ha logena ted solvent-processed PSCs has been ***,a novel LBG DPP-based polymer,called PDPP4 T-1 F with asymmetric arrangement of fluorine atom,has been successfully synthesized and showed an outstanding power conversion efficiency(PCE) of 10.10% in a singlejunction fullerene-based ***,an impressive PCE of 13.21% has been achieved in a tandem device from a fully non-halogenated solvent system,which integrates a wide bandgap PDTBTBz-2 F polymer in the bottom cell and LBG PDPP4 T-1 F polymer in the top *** achieved efficiency is the highest value reported in the literature to date in fullerene-based tandem *** found that a uniformly distributed interpenetrating fibril network with nano-scale phase separation and anisotropy of the polymer backbone orientation for efficient charge transfer/transport and suppressed charge recombination in PDPP4 T-1 F-based PSCs led to outstanding PCEs in single and tandem-junction PSCs.

关键词： Low bandgap polymers Diketopyrrolopyrrole Tandem polymer solar cells Non-halogenated solvent Monofluoro-bithiophene

Orientating, Training and Fostering Professional Qualification of Accounting to Meet Integration Requirements

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Management Studies 2017年第5期5卷 445-450页

作者： Tu Chuc anh Academy of Finance Hanoi Vietnam

Joining in AEC has opened the broad region and international integration with many fields including the field of accounting. Accounting service transfer and accounting certificate recognition have given many difficulties, challenges, and works to be done for vietnam, such as language barriers, education program, National legislation, customs, and habits; practicing certificate and practice conditions recognition are issues which need to be resolved and mentioned with solving orientation in the article. Main contents inlclude analysis of the viet Nam situations and some solutions to do it.

关键词： international integration accounting service transfer accounting certificate accounting program

越南航空女制服奥黛（Ao Dai）袖子的结构优化研究

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越南航空女制服奥黛（Ao Dai）袖子的结构优化研究

作者：吴氏越河（Ngo Thi viet ha）东华大学

学位级别：硕士

奥黛是越南的国服，作为越南航空空姐的制服，其典型东方女性的风格不仅能够为越南航空增光添彩，也能够在国际上发扬越南独特的服饰文化。为使奥黛的设计能够更加符合空姐的工作内容，本课题应委托方的需求采用问卷调查的方式对100名... 详细信息

奥黛是越南的国服，作为越南航空空姐的制服，其典型东方女性的风格不仅能够为越南航空增光添彩，也能够在国际上发扬越南独特的服饰文化。为使奥黛的设计能够更加符合空姐的工作内容，本课题应委托方的需求采用问卷调查的方式对100名空姐关于制服的诉求进行了解，确定制服的优化内容及方案，并对空姐进行人体测量获取人体数据，同时进行改良样衣袖子试穿评价实验，为企业设计出美观且舒适的空姐制服提供有效途径。具体研究内容如下：通过使用SPSS软件，分析了100位越南航空空姐关于制服的调研问卷数据，发现67%的人喜欢奥黛的款式造型，但大部分人觉得穿着奥黛给工作造成了不便，具体到奥黛部位上则显示出袖子的不舒适占比最大。确立了本课题将对制服奥黛袖子进行优化。首先采用手工测量方法对40名航空空姐进行人体测量，运用统计分析软件对数据进行分析，最终提取出中间体型165/84A作为研究对象，并根据提取出的中间体型人体数据以现有的制服结构方法作平面制图，作为优化方案的参考。之后结合一片插肩袖的结构设计原理，对奥黛袖子进行解析并最终制定出袖肥优化方案：设现用奥黛为样衣2，在样衣2基础上减小袖肥1cm，设为样衣1，而在样衣2基础上分别增加袖肥1cm、2cm、3cm设为样衣3、样衣4和样衣5。通过研究人体工学以及空姐手臂的工作范围，确立了实验方案，采用空姐制服相同面料进行实验样衣的缝制，对8名模特进行试穿评价。采用5级心理量表法，分别对实验样衣的静态美观性和动态舒适性进行主观评价。发现美观性上1号样衣最好，但是舒适性最差;2号样衣美观性略次于3号样衣，居第三位，但舒适性较差，为第四位;3号样衣美观性略次于1号样衣，居第二位，而舒适性较好，能够满足工作要求;4、5号样衣其袖子比较宽松，因此舒适性好，但其美观性差。因此，总体上3号样衣确定为改良板样衣，既能够满足空姐制服美观性的要求，也满足舒适性的要求。本课题基于越南空姐调研、人体工学研究以及主观评价实验，对制服奥黛的袖子进行优化改进，并最终确定满足条件的样衣，为企业制作美观性与舒适性集一体的航空空姐制服提供了科学依据。

关键词：越南奥黛空姐制服主观评价袖子优化

A Multinational Data Set of Game Players' Behaviors in a Virtual World and Environmental Perceptions

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Data Intelligence 2021年第4期3卷 606-629页

作者： Quan-Hoang Vuong Manh-Toan Ho viet-Phuong La Tam-Tri Le Thanh Huyen T.Nguyen Minh-Hoang Nguyen Centre for Interdisciplinary Social Research Phenikaa UniversityYen Nghia WardHa Dong DistrictHanoi 100803Vietnam A.I.for Social Data Lab Vuong&AssociatesDong Da DistrictHanoi 100000Vietnam

Video gaming has been rising rapidly to become one of the primary entertainment media,especially during the COVID-19 *** video games has been reported to associate with many psychological and behavioral ***,little is known about the connections between game players’behaviors in the virtual environment and environmental ***,the current data set offers valuable resources regarding environmental worldviews and behaviors in the virtual world of 640 Animal Crossing:New Horizons(ACNH)game players from 29 countries around the *** data set consists of six major categories:1)socio-demographic profile,2)COVID-19 concern,3)environmental perception,4)gameplaying habit,5)in-game behavior,and 6)game-playing *** making this data set open,we aim to provide policymakers,game producers,and researchers with valuable resources for understanding the interactions between behaviors in the virtual world and environmental perceptions,which could help produce video games in compliance with the United Nations(UN)Sustainable Development Goals.

关键词： Environmental psychology Virtual environment Game-playing behaviors Multinational UN compliance design