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Correlates of physical activity in fifth-grade students in Ho Chi Minh City,vietnam

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Sports Medicine and Health Science 2020年第1期2卷 33-37页

作者： Quyen G.To Danielle Gallegos Dung v.Do hanh TM.Tran Kien G.To Lee Wharton Stewart G.Trost Appleton Institute School of HealthMedical and Applied SciencesCentral Queensland UniversityAustralia School of Exercise and Nutrition Sciences Queensland University of TechnologyBrisbaneAustralia School of Exercise and Nutrition Sciences Institute for Health and Biomedical Innovation at QLD Centre for Children's Health ResearchQueensland University of TechnologyBrisbaneAustralia Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityViet Nam Nutrition Center Ho Chi Minh CityViet Nam

Studies investigating correlates of physical activity(PA)using objective PA measurements among primary schoolaged children are limited in Asia,particularly *** study examined psychosocial and environmental factors associated with PA among fifth-grade students in eight primary schools in Ho Chi Minh city,*** analyses showed that for every month increase in students’age,an increase of 66 steps/day(pvery unit increase in self-efficacy,perceived social influences,intention to be physically active,and parental support for PA,an increase of 220,200,522,and 117 steps/day(pvariable analysis,only intention and parental support for PA remained significant(pvariation in daily steps was explained by demographic characteristics and an additional 13%by psychosocial *** conclusion,intention to be physically active and parental support are important factors and should be considered when designing PA interventions in school/community-based settings.

关键词： Exercise Primary school Psychosocial Environmental Parental support

Psychometric properties of questionnaires to measure social ecological influences in vietnamese children

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Sports Medicine and Health Science 2019年第1期1卷 40-43页

作者： Quyen G.To Danielle Gallegos Dung v.Do hanh TM.Tran Kien G.To Lee Wharton Stewart G.Trost School of Exercise and Nutrition Sciences Queensland University of TechnologyBrisbaneAustralia School of Exercise and Nutrition Sciences Institute for Health and Biomedical Innovation at QLD Centre for Children's Health ResearchQueensland University of TechnologyBrisbaneAustralia Faculty of Public Health University of Medicine and PharmacyHo Chi Minh CityVietnam Nutrition Center Ho Chi Minh CityVietnam

Physical activity data in primary school-aged children are limited in *** tools to measure social ecological influences on physical activity are validated in English,they are not available in *** to cultural and contextual differences,their psychometric properties need to be *** scales were translated into vietnamese and evaluated for internal consistency and test re-test reliability,including self-efficacy,perceived social influences,and beliefs self-administered by students,and parental support for physical activity and parental perceived safety of the neighbourhood,self-administered by *** to the original scales,two items from the parental perceived neighbourhood safety were removed due to the cultural *** item of the self-efficacy scale was also removed as it correlated poorly with the other items in the scale at both *** adjusted scales were found to be reliable and appropriate for use among students and parents to measure social ecological influences on physical activity in the vietnamese context.

关键词： Physical activity Exercise Social ecological influence Ho Chi Minh city Elementary school

20-Hydroxyecdysone from Dacrycarpus imbricatus bark inhibits the proliferation of acute myeloid leukemia cells

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Asian Pacific Journal of Tropical Medicine 2017年第2期10卷 151-153页

作者： Trinh Thi Thuy nguyen Thanh Tam nguyen Thi Hoang Anh Dang viet Hau Dinh Thi Phong Le Quoc Thang Sabrina Adorisio Tran van Sung Domenico v Delfino Institute of Chemistry Vietnam Academy of Science and Technology vietnam National Museum of Nature Vietnam Academy of Science and Technology Hue University’s College of Educations Section of Pharmacology Department of MedicineUniversity of Perugia

Objective:To investigate the anti-proliferative effects of 20-hydroxyecdysone isolated from the bark of Dacrycarpus imbricatus(Blume) de ***:Column chromatography was used for isolation of compounds from plant *** structure of the isolated compound was identified by mass spectrometry and nuclear magnetic resonance techniques,including HSQC,HMBC,NOE-difference *** isolated compound was tested for its anti-proliferative activity in acute myeloid leukemia(AML) and OCI-AML ***:Compound 1 was isolated from the ethyl acetate fraction of Dacrycarpus imbricatus barks by column *** chemical structure was identified as 20-hydroxyecdysone(20HE),a cholestane-type ecdysteroid,by a combination of mass spectrometry and nuclear magnetic resonance spectrometric *** goal was to test the anti-proliferative activity of 20 HE using the OCI-AML cell line.20 HE significantly decreased OCI cell number at a concentration of 1 mg/mL,whereas lower concentrations were ***,this decrease was due to partial blockage of the G_1/S phase of the cell cycle,with a reduction of cells in the G_2M phase,not due to increased ***:This indicates that 20 HE significantly decreases the number of cells in the G_1/S phase of the cell cycle in human AML *** is the first time that the anti-proliferative activity of 20 HE against a human tumor cell line has been reported.

关键词： Dacrycarpus imbricatus Ecdysteroid 20-hydroxyecdysone Proliferation Acute myeloid leukemia

STUDY ON CHEMICAL COMPOSITION OF PANAX PSEUDOGINSENG WALL ROOT

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STUDY ON CHEMICAL COMPOSITION OF PANAX PSEUDOGINSENG WALL RO...

Hybrid Design and Performance Tests of a Hovering Insect-inspired Flapping-wing Micro Aerial vehicle

13th Asian Chemical Congress

作者： Pham Duc Lanh Phung van Trung Pham Thi Minh Hien nguyen Ngoc hanh Can Tho university Can Tho cityVietnam

＜正＞From the chloroform and n-buthanol extracts of Panax pseudoginseng Wall root,a new ginsinoside named Ginsenoside Rg9（3-O-[β-D-glucopyranosyl]-6-O-[β-D-glucopyranosyl]- 3β,6β,12β,20β-tetrahydroxy-dammar-24-en）,two known ginsenosides called Ginsenoside Rgl and Ginsenoside Rbl and one steroid（β-sitosterol-3-O-β-D-glucopyranoside） were isolated by chromatography *** structure were elucidated by modern spectrometric methods.

关键词： Panax pseudoginseng Wall root Ginsenoside Rb1 Rg1 3-O-[β-D-glucopyranosyl]-6-O-[β-D-glucopyranosyl]-3β,6β,12β,20β-tetrahydroxy-dammar-24-en vaβ-sitosterol-3-O-β-D-glucopyranoside

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Journal of Bionic Engineering 2016年第2期13卷 235-248页

作者： Quoc-viet nguyen Woei Leong Chan Marco Debiasi Temasek Laboratories National University of Singapore Singapore 117411 Singapore

Hovering ability is one of the most desired features in Flapping-Wing Micro Air vehicles （FW-MAvs）. This paper presents a hybrid design of flapping wing and fixed wing, which combines two flapping wings and two fixed wings to take advantage of the double wing clap-and-fling effect for high thrust production, and utilizes the fixed wings as the stabilizing surfaces for inherently stable hovering flight. Force measurement shows that the effect of wing clap-and-fling significantly enhances the cycle-averaged vertical thrust up to 44.82% at 12.4 Hz. The effect of ventral wing clap-and-fling due to presence of fixed wings produces about 11% increase of thrust-to-power ratio, and the insect-inspired FW-MAv can produce enough cycle-averaged vertical thrust of 14.76 g for lift-offat 10 Hz, and 24 g at maximum frequency of 12.4 Hz. Power measurement indicates that the power consumed for aerodynamic forces and wing inertia, and power loss due to gearbox friction and mechanism inertia was about 80% and 20% of the total input power, respectively. The proposed insect-inspired FW-MAv could endure three-minute flight, and demonstrate a good flight performance in terms of vertical take-off, hovering, and control with an onboard 3.7 v-70 mAh LiPo battery and control system.

关键词： insect-inspired flapping wing hovering clap-and-fling MAv vertical takeoff

Hematopoietic Stem Cell Transplantation in vietnam： Current Status and Future Directions

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Journal of Pharmacy and Pharmacology 2018年第8期6卷 765-771页

作者： Phu Duc vinh Huynh Man van Huynh Nam Duy Hoang Ngon Thien Huynh Tuan Xuan Ma Thu hanh nguyen Dung Chi Phu Binh Tan nguyen Blood Transfusion Hematology Hospital Hochiminh city700000 Vietnam University of Medicine and Pharmacy Hochiminh city 700000 Vietnam

In recent years, there have been an increasing number of hematologic patients in vietnam. Hematopoietic stem cell transplantation （HSCT） is fast becoming an effective method to cure many benign and malignant blood disorders. Nine transplant centers are operating throughout vietnam. HCMC Blood Transfusion Hematology Hospital （BTH） is one of these centers where bone marrow, peripheral blood and cord blood stem cell transplantation were first conducted in our country. At BTH, half of the patients received allogeneic HSCT, mainly from matched sibling donors due to lack of a national bone marrow donor registry. While acute myeloid leukemia was a common indication of allogeneic HSCT, most of the patients undergoing autologous HSCT had multiple myeloma. One major issue we encountered concerned bacterial and fungal infections during neutropenia period. Because of an endemic area, CMv reactivation frequently occurred. Five-year overall survival （OS） and event-free survival （EFS） were 47% and 46%, respectively. To create more opportunities for patients, our future directions will focus on some new transplant procedures, such as haploidentical, unrelated and cord blood transplantation.

关键词： HSCT vietnam BTH allogeneic autologous.

干旱胁迫下不同甘蔗品种叶片抗氧化酶活性和渗透调节物质含量的变化

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热带作物学报 2018年第5期39卷 858-866页

作者： Do Thanh Trung 李健张风娟邢永秀杨丽涛李杨瑞 nguyen Thi hanh 广西大学农学院/亚热带农业生物资源保护与利用国家重点实验室广西南宁530005 广西农业科学院/中国农业科学院甘蔗研究中心/农业部广西甘蔗生物技术与遗传改良重点实验室/广西甘蔗遗传改良重点实验室广西南宁530007

我国80%以上的甘蔗种植在旱地,干旱缺水是影响甘蔗生产的主要因子。研究不同甘蔗品种的抗旱生理生化特性对于抗旱甘蔗品种选育和抗旱栽培技术研发具有重要意义。本研究采用桶栽方式,对抗旱性有差异的F172(抗旱性强)和YL6(不抗旱)2个甘... 详细信息

我国80%以上的甘蔗种植在旱地,干旱缺水是影响甘蔗生产的主要因子。研究不同甘蔗品种的抗旱生理生化特性对于抗旱甘蔗品种选育和抗旱栽培技术研发具有重要意义。本研究采用桶栽方式,对抗旱性有差异的F172(抗旱性强)和YL6(不抗旱)2个甘蔗品种在苗期及伸长期分别进行不同程度的干旱胁迫及复水处理,探讨了不同甘蔗品种抗旱性与叶片抗氧化酶活性和渗透调节物质含量的关系。结果表明:抗旱性较强的甘蔗品种F172在干旱胁迫条件下叶片中氧自由基清除酶系中的超氧化物歧化酶(SOD)、过氧化物酶(POD)和抗氧化保护酶过氧化氢酶(CAT)活性及非可溶性蛋白(ISP)、可溶性糖(SS)含量显著提高;与不抗旱甘蔗品种YL6相比,甘蔗品种F172叶片中丙二醛(MDA)、非可溶性糖(ISS)含量相对比较稳定;而不抗旱甘蔗品种YL6在干旱胁迫条件下叶片中氧自由基清除酶反应较迟钝,MDA和ISS含量上升幅度相对较大,而可溶性蛋白(SP)、ISP含量下降。说明甘蔗叶片抗氧化酶活性和渗透调节物质含量的差异是品种耐干旱胁迫存在差异的生理基础。

关键词：甘蔗干旱胁迫氧化酶渗透调节物质

基于AFM的纳米尺度线宽计量模型及其算法的研究

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机械工程学报 2004年第4期40卷 50-57页

作者：赵学增褚巍 Theodore v vorburger Joseph Fu John Song Cattien v nguyen 哈尔滨工业大学机电工程学院哈尔滨150001 美国国家标准与技术研究院美国国家航空与航天管理局

纳米尺度线宽的测量广泛应用于半导体制造、数据存储、微机电系统等领域。随着制造技术的进步,线宽的极限尺寸也变得越来越小,目前已经缩小至100 nm左右。在这一尺度范围内,由于样本制造技术的限制和测量仪器的影响,目前很难得到准确的... 详细信息

纳米尺度线宽的测量广泛应用于半导体制造、数据存储、微机电系统等领域。随着制造技术的进步,线宽的极限尺寸也变得越来越小,目前已经缩小至100 nm左右。在这一尺度范围内,由于样本制造技术的限制和测量仪器的影响,目前很难得到准确的测量结果。为了获得样本的真实几何尺寸信息,剔除测量方法和仪器本身对测量结果的影响,建立了一个基于AFM测量技术的线宽计量模型和相应算法。该模型将被测样本的截面轮廓用20个关键点分成5个部分共19段,用基于最小二乘的直线来拟合实际轮廓。应用该模型和算法可以分别得到单刻线轮廓拟合前后的顶部线宽b_T、b_(TF),中部线宽b_M、b_(MF),底部线宽b_B、b_(BF),左右边墙角A_L、A_R,以及高度h_。使用NanoScope Ⅲa型AFM对一个单晶硅(Si)线宽样本进行了测量,测量结果表明该模型和算法可以满足纳米尺度线宽计量的基本要求。

关键词：纳米计量线宽计量模型算法原子力显微镜半导体数据存储微机电系统

口服氮-氨甲酰谷氨酸补饲增加仔猪骨骼肌中的蛋白质合成

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饲料与畜牧（新饲料） 2012年第12期 12-16页

作者： Jason W.Frank Jeffery Escobar hanh v.nguyen 赵颖不详中国农业大学动物科技学院

文章研究了补饲氮-氨甲酰谷氨酸(N-Carbamylglutamate,NCG,一种模拟内源性氮-乙酰谷氨酸,合成精氨酸的激活剂)提高哺乳仔猪的生长率的潜在机制。试验选取体重接近、性别相同的2组仔猪进行口服试验,每12h向日粮中分别添加0mg/kg(对照组)... 详细信息

文章研究了补饲氮-氨甲酰谷氨酸(N-Carbamylglutamate,NCG,一种模拟内源性氮-乙酰谷氨酸,合成精氨酸的激活剂)提高哺乳仔猪的生长率的潜在机制。试验选取体重接近、性别相同的2组仔猪进行口服试验,每12h向日粮中分别添加0mg/kg(对照组)和50mg/kgNCG(试验组),试验期为7d。试验仔猪(n=32,BW=3kg)禁食7d并进行试验前处理。整夜禁食后,分别在0min和60min饲喂仔猪NCG和水(对照组)。之后分别在第0min和60min灌服试验组仔猪含NCG的母乳。在第60min,给仔猪灌服[3H]水浸剂量的苯丙氨酸,并在第90min宰杀,用以测定组织蛋白的合成。与对照组相比,NCG处理组的仔猪体重在7d内增加了28%(P<0.001),与禁食的仔猪相比,未禁食仔猪的背最长肌、腓肠肌、十二指肠的蛋白质合成速率均较高(P<0.001)。与对照组相比,NCG试验处理组仔猪背最长肌和腓肠肌的蛋白质合成速率分别提高了30%(P=0.05)和21%(P=0.068)。同时,补饲NCG的仔猪血浆中精氨酸和生长激素的浓度高于对照组。结果显示,补饲氮-氨甲酰谷氨酸可以提高血浆中精氨酸和生长激素水平,促进哺乳仔猪生长率和肌肉蛋白质合成的增加。

关键词：氮-氨甲酰谷氨酸仔猪骨骼肌蛋白质合成