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Prevalence and risk factors associated with long COVID symptoms in children and adolescents in a southern province of Vietnam

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Asian Pacific Journal of Tropical Medicine 2024年第3期17卷 119-128,I0001,I0002页

作者： Huynh Ngoc linh Nguyen The Tan le Thi Minh Thu Nguyen tu loan Nguyen Thi To Uyen le Thanh Thao Trang Truong Thanh Nam Doan Hoang Phu Faculty of Medicine Ca Mau Medical CollegeCa Mau 98000Vietnam Ca Mau Obstetrics and Pediatrics Hospital Ca Mau 98000Vietnam Faculty of Basic Science and Public Health Dong Thap Medical CollegeDong Thap 81000Vietnam Graduate University of Sciences and Technology Vietnam Academy of Science and TechnologyHa Noi 10000Vietnam Community Public Health Research Program School of Public HealthWalailak UniversityNakhon Si Thammarat 80160Thailand Faculty Public Health Can Tho University of Medicine and PharmacyCan Tho City 94000Vietnam Doctoral Program in Health Sciences College of Graduate StudiesWalailak UniversityNakhon Si Thammarat 80160Thailand

Objective:To investigate the prevalence and risk factors associated with long COVID symptoms among children and adolescents who have recovered from ***:This study applied a cross-sectional approach within community settings in a southern province of Vietnam.A structured questionnaire featuring socio-demographic information and common long COVID symptoms was *** correlation coefficients assessed associations among pairs of long COVID ***,multivariable logistic regression models were performed to investigate the risk factors of long COVID in recovered COVID-19 children and ***:Among 422 participants,39.3%reported long COVID symptoms,with a prevalence of 45.2%(SD=0.5)in children and 22.2%(SD=0.4)in *** symptoms reported were cough 34.6%(SD=0.5),fatigue 20.6%(SD=0.4),shortness of breath 10.9%(SD=0.3),and lack of appetite 6.6%(SD=0.3).Concerning risk factors of long COVID,a higher risk was observed among demographic groups,including girls(OR 1.25,95%CI 1.15-1.37;Pldren compared to adolescents(OR 1.24,95%CI 1.12-1.37;Pls(OR 1.14,95%CI 1.02-1.27;P=0.018,reference:healthy weight),and participants without any COVID-19 vaccination(OR 1.36,95%CI 1.20-1.54;Phave received only one single dose(OR 1.35,95%CI 1.10-1.64;P=0.004)compared to those who have received two ***,patients with a COVID-19 treatment duration exceeding two weeks also had a higher risk of long COVID(OR 1.32,95%CI 1.09-1.60;P=0.003)than those who recovered less than seven ***:The insights from this study provide crucial guidance for predicting the factors associated with the occurrence of long COVID in pediatric patients,contributing to strategic interventions aimed at mitigating the long COVID risks among children and adolescents in Vietnam.

关键词： long COVID Prevalence Risk factors Children Adolescent Vietnam

Manipulation of vertical fence wake using passive vortex generators

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排灌机械工程学报 2014年第5期32卷 369-372,377页

作者： Kim Hyoung-Bum Kim Seoung-Jun tu Xin-Cheng Park Seung-ha Kim Seoung-Jun tu Xin-Cheng Park Seung-ha Research Center for Aircraft Parts Technology Gyeongsang National University School of Mechanical Engineering Gyeongsang National University R & D Center DongHwa Entec School of Mechanical Engineering Gyeongsang National University Jinju 660 -701 S. Korea R & D Center DongHwa Entee Busan 618-230 S. Korea

The effect of streamwise vortices generated from passive vortex generators was investigated to manipulate the separation bubble behind the vertical fence. The experiments were carried out in a circulating water channel and the velocity fields were measured using 2D and stereoscopic PIV *** distance between the vortex generator and fence and the effect of the Reynolds number were investigated. In addition,the effect of boundary layer thickness was also investigated. The averaged recirculation lengths were compared with that of uncontrolled fence flow. The results showed the oscillatory variation of recirculation region appeared under the existence of vortex generators. The reduction of the separation bubble became larger when the fence was submerged in the thick boundary layer with increasing the distance between the generator and fence. When the boundary layer is thin,vortex generator can only suppress the separation bubble under the specific condition.

关键词： vortex generator flow separation stereoscopic PIV experiment

Regional eco-efficiency evaluation and spatial pattern analysis of the Yangtze River Economic Zone

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Journal of Geographical Sciences 2020年第7期30卷 1117-1139页

作者： ha lin tu Jianjun YANG Jianping XU Chunhai PANG Jiaxing lU Debin YAO Zuolin ZhaO Wenyu State Key laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesCASLanzhou 730000China College of Economics and Management Southwest UniversityChongqing 400715China University of Chinese Academy of Sciences Beijing 100049China College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China Department of land Management Zhejiang UniversityHangzhou 310058China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China

The environmental ecology of the Yangtze River Economic Zone(YREZ)faces ecological function decline,deterioration and degradation under intense human activities,long-term development and utilization and its economy has developed rapidly over recent ***-efficiency is considered as a measure of coordinated development of economy,resources,environment and ecology,and is currently considered a very important *** this paper,based on the slack-based measure and data envelope analysis model,we take 129 prefecture-level cities of the YREZ as the study unit and measure the eco-efficiency of the YREZ in 2000,2005,2010 and 2015,which considers undesired *** evaluation of the status quo of the regional eco-efficiency development was carried out at provincial,prefectural and city *** spatial autocorrelation test model and standard deviation ellipse were used to analyze the spatially distributed characteristics and the evolutionary regularity of *** study suggested that the eco-efficiency value varied significantly at different spatiotemporal scales and the overall distribution presented an"N-shaped"pattern,the value is the largest downstream and the smallest *** eco-efficiency presented certain volatility in growth and a clear spatial positive agglomeration trend from 2000 to *** spatial distribution of each agglomeration area was also significantly different,forming some high-high agglomeration areas at the center of the shaft with Shanghai and surrounding cities,and some low-low agglomeration areas at the center with middle reaches and upstream *** low-high over-aggregation and high-low polarization clusters were *** the same time,with the change of the research period,the degree of positive agglomeration became increasingly pronounced and the eco-efficiency gap of the neighborhoodunit *** regional eco-efficiency value of the YREZ presented a spatial distribution pattern in the northeast-southwest

关键词： eco-efficiency SBM-DEA model undesired output Yangtze River Economic Zone

西格列汀调节FOXO3-FOXM1信号通路对肺癌细胞化疗敏感性的影响及机制研究

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河北医学 2024年第4期30卷 529-536页

作者：哈图锡林通嘎拉嗄梁秀平范惠芳陈海波内蒙古自治区人民医院内蒙古呼和浩特010017 内蒙古医科大学基础医学院内蒙古呼和浩特010110

目的:研究西格列汀(SIT)调节叉头框蛋白O3(FOXO3)-叉头蛋白M1(FOXM1)信号通路对肺癌细胞化疗敏感性的影响及机制。方法:体外培养人肺癌细胞A549及其顺铂(DDP)耐药细胞A549/DDP,均以0、0.5、1、2、3、4mmol/l的SIT处理,以CCK-8法测定各组... 详细信息

目的:研究西格列汀(SIT)调节叉头框蛋白O3(FOXO3)-叉头蛋白M1(FOXM1)信号通路对肺癌细胞化疗敏感性的影响及机制。方法:体外培养人肺癌细胞A549及其顺铂(DDP)耐药细胞A549/DDP,均以0、0.5、1、2、3、4mmol/l的SIT处理,以CCK-8法测定各组A549及A549/DDP细胞活力并筛选出SIT最佳作用浓度。将A549/DDP细胞随机分为对照组、SIT(2mmol/l)组、si-NC组(转染空载质粒)、SIT(2mmol/l)+si-FOXO3(转染FOXO3 siRNA质粒)组,以SIT和质粒分组处理的同时以0、2、4、8、16、32mg/l DDP处理,然后以CCK-8法测定各组细胞化疗耐药指数。将A549/DDP细胞随机分为对照组、SIT(2mmol/l)组、DDP(4mg/l)组、DDP(4mg/l)+si-NC组、DDP(4mg/l)+SIT(2mmol/l)组、DDP(4mg/l)+SIT(2mmol/l)+si-FOXO3组,分组处理后分别以CCK-8法、克隆形成实验及流式细胞实验测定各组A549/DDP细胞增殖、凋亡;以免疫印迹法检测各组A549/DDP细胞增殖(C-myc、PCNA)、凋亡{Bax、cleaved多聚ADP核糖聚合酶(PARP)}、耐药{P-糖蛋白(P-gp)、多药耐药相关蛋白(MRP1)、MRP2、乳腺癌耐药蛋白(BCRP)}与用FOXO3-FOXM1通路相关蛋白表达。结果:与对照组相比,SIT组细胞化疗耐药指数降低(P0.05);与SIT组相比,SIT+si-FOXO3组细胞化疗耐药指数升高(Pleaved PARP蛋白表达升高(Pleaved PARP、FOXO3蛋白表达升高(Pleaved PARP、FOXO3蛋白表达升高(P0.05)。与DDP+SIT组相比,DDP+SIT+si-FOXO3组A549/DDP细胞活力、克隆形成率、C-myc及PCNA、P-gp、MRP1、MRP2、BCRP、FOXM1蛋白表达升高(Pleaved PARP、FOXO3蛋白表达降低(P<0.05)。结论:SIT可通过促进FOXO3-FOXM1信号传导而下调耐药蛋白表达,增强肺癌细胞化疗敏感性,进而提高DDP对肺癌DDP耐药细胞的杀伤作用。

关键词：肺癌西格列汀 FOXO3-FOXM1 化疗敏感性

紫花苜蓿与无芒雀麦不同混合比例对其青贮品质的影响

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饲料研究 2024年第13期47卷 118-123页

作者：乌力塔陈肃胡梦洁涂哈迪寇文慧刘洋张小林肖燕子东北林业大学黑龙江哈尔滨150040 呼伦贝尔学院草产业协同创新研究中心内蒙古呼伦贝尔021000 鄂温克族自治旗农牧和科技事业发展中心内蒙古呼伦贝尔021000

试验旨在探讨紫花苜蓿(Medicago sativa l.)与无芒雀麦(Bromus inermis)不同混合比例对其青贮营养品质及发酵品质的效果。以紫花苜蓿与无芒雀麦为试验原料,按鲜重质量比10∶0、8∶2、7∶3、6∶4、4∶6、3∶7、2∶8、0∶10混合青贮,每个... 详细信息

试验旨在探讨紫花苜蓿(Medicago sativa l.)与无芒雀麦(Bromus inermis)不同混合比例对其青贮营养品质及发酵品质的效果。以紫花苜蓿与无芒雀麦为试验原料,按鲜重质量比10∶0、8∶2、7∶3、6∶4、4∶6、3∶7、2∶8、0∶10混合青贮,每个处理3个重复,贮存60 d后,检验分析感官品质、营养成分及发酵品质,通过V-Score评分系统对发酵品质进行打分,使用灰色关联分析对8组混合青贮的营养品质及发酵品质进行综合评价,确定两种饲草的最佳混合比例。结果显示:紫花苜蓿与无芒雀麦混合比例为6∶4时青贮的效果最佳,pH值和氨态氮(NH_3-N)含量最低,粗蛋白(CP)和乳酸(lA)含量最高,酸性洗涤纤维(ADF)和中性洗涤纤维(NDF)含量最低。研究表明,紫花苜蓿与无芒雀麦混合青贮的效果优于紫花苜蓿与无芒雀麦单贮,混合青贮相比单贮更能够充分发挥各青贮原料的优点,可更好地保存青饲料的营养成分,紫花苜蓿与无芒雀麦的比例为6∶4时混合青贮效果最佳。

关键词：紫花苜蓿无芒雀麦不同比例混合青贮营养品质发酵品质

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普拉洛芬联合奥洛他定治疗过敏性结膜炎患者的临床效果

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中外医学研究 2024年第19期22卷 72-75页

作者：涂宏刚贵阳市南明区人民医院贵州贵阳550000

目的:探究普拉洛芬与奥洛他定治疗过敏性结膜炎的效果。方法:选择2021年5月—2023年5月贵阳市南明区人民医院收治的96例过敏性结膜炎患者,按随机数表法分为两组,各48例。对照组采用普拉洛芬治疗,观察组在对照组基础上加用奥洛他定治疗,... 详细信息

目的:探究普拉洛芬与奥洛他定治疗过敏性结膜炎的效果。方法:选择2021年5月—2023年5月贵阳市南明区人民医院收治的96例过敏性结膜炎患者,按随机数表法分为两组,各48例。对照组采用普拉洛芬治疗,观察组在对照组基础上加用奥洛他定治疗,比较两组临床疗效、炎症反应水平、免疫功能、泪膜功能及不良反应。结果:观察组总有效率(95.83%)高于对照组(81.25%),治疗后,观察组组胺(ha)水平和嗜酸细胞阳离子蛋白(ECP)水平均低于对照组;免疫球蛋白A(IgA)、免疫球蛋白G(IgG)、免疫球蛋白E(IgE)水平均低于对照组;观察组泪膜破裂时间(BUT)和泪液分泌量(SⅠt)高于对照组,差异有统计学意义(P0.05)。结论:普拉洛芬与奥洛他定联合治疗过敏性结膜炎的效果明显,可有效减轻患者炎症症状,促进患者泪膜功能恢复,提高免疫力,且安全性较好。

关键词：过敏性结膜炎普拉洛芬奥洛他定临床疗效

Upconversion luminescence of Gd2O3:Er3+and Gd2O3:Er3+/silica nanophosphors fabricated by EDTA combustion method

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Journal of Rare Earths 2019年第11期37卷 1126-1131页

作者： le Quoc Minh Tran Kim Anh Nguyen Duy Hung Pham Thi Minh Chau Nguyen Thi Quy hai Ho Van tuyen Vu Thi Thai ha Vu Duc tu Wieslaw Strek Institute of Theoretical and Applied Research Duy Tan UniversityDa Nang 55000Viet Nam Advanced Institute for Science and Technology Hanoi University of Science and Technology1 Dai Co VietHai Ba TrungHanoiViet Nam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau Giay DistrictHanoiViet Nam Institute of low Temperature and Structure Research Polish Academy of Science 2 OkolnaWroclawPoland

Gd2O3:Er^3+nanophosphors were fabricated by the combustion method in presence of Na2 ethylene diamine tetra acetic acid(EDTA-Na2)as fuel at not high temperature(≤350℃)within a very short time of 5 *** added concentration of Er^3+ions in Gd2O3 matrix was changed from 0.5 mol%to 5.0 mol%.The X-ray diffraction pattern of samples indicates the monoclinic structure of Gd2O3:Er^3+.The morphology and chemical composition analysis of the Gd2O3:Er^3+samples are characterized by a field emission scanning electron microscope(FESEM)and a Fourier-transform infrared spectrometer(FTIR).The photoluminescence(Pl),photo luminescence excitation(PlE)and upconversion(UC)at room temperature of the prepared materials with different concentrations of Er^3+were *** Pl of Gd2O3:Er^3+nanomaterials are shown in visible at 545,594,623,648,688 nm under excitation at 275 *** emission bands from transitions of Er^3+from 2P3/2 to 4F9/2 are observed,UC luminescent spectra of the Gd2O3:Er^3+/silica nanocomposites under 976 nm excitation show the bands at 548 and 670 *** influence of excitation power at 980 nm for transitions were measured and *** results indicate that the upconversion process of Gd2O3:Er^3+/silica is two photons absorption *** low temperature dependence of UC luminescent intensities of the main bands of Gd2O3:Er^3+was investigated towards development of a nanotemperature sensor in the range of 10-300 K.

关键词： Upconversion luminescence Gd2O3:Er3+ Gd2O3:Er3+/silica Nanophosphors EDTA combustion Rare earths

温度与盐度对福建牡蛎与长牡蛎、熊本牡蛎、香港巨牡蛎种间杂交子代孵化及其早期生长成活的影响

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海洋科学 2024年第4期48卷 53-62页

作者：涂康韩自强肖懿哲谢双如黄琼叶莆田市水产科学研究所福建莆田351100 集美大学水产学院福建厦门361100

本研究以野生福建牡蛎(A)为亲本一方,分别与野生长牡蛎(G)、熊本牡蛎(S)、香港巨牡蛎(H)进行杂交,除A♀×S♂、A♀×H♂两组杂交不育外,共得到AG(A♀×G♂)、GA(G♀×A♂)、SA(S♀×A♂)、ha(H♀×A♂)、AA(A♀×A♂)5个不同组合,并研... 详细信息

本研究以野生福建牡蛎(A)为亲本一方,分别与野生长牡蛎(G)、熊本牡蛎(S)、香港巨牡蛎(H)进行杂交,除A♀×S♂、A♀×H♂两组杂交不育外,共得到AG(A♀×G♂)、GA(G♀×A♂)、SA(S♀×A♂)、ha(H♀×A♂)、AA(A♀×A♂)5个不同组合,并研究不同盐度与温度对其幼虫孵化率、早期生长及成活率的影响。结果表明,盐度25时AG、GA、SA、ha、AA五组孵化率分别达到最大值78.33%、75.00%、63.33%、55.00%、71.67%;温度低于25℃时,GA孵化率高于其他组,温度高于25℃时AG孵化率最大,其中25℃时达到最大孵化率83.33%;不同盐度条件下D型幼虫经过7 d培育,ha在盐度20时壳高达到最大值97.8μm,成活率46.67%,在盐度为35时第5天全部死亡。AG、GA、SA、AA四组在盐度为25时壳高有最大值,分别为124.7μm、121.2μm、93.7μm,111.8μm;不同温度条件下D型幼虫经过7 d培育,在温度为25℃时各组壳高和成活率均有最大值,大小排列依次为AG>GA>AA>ha>SA,各组成活率随温度升高呈现出先增大后减小的趋势,AG在25℃时成活率在所有组中最高,为88.89%;孵化后在适宜温度盐度条件下连续培养16 d,不同组之间壳高表现为:AG>GA>AA>ha>SA,AG壳高、壳高SGR及成活率始终大于其他组,而SA、ha两组壳高、壳高SGR及成活率始终小于自交组AA。研究表明,相较于福建牡蛎与熊本牡蛎、香港巨牡蛎的杂交,以及福建牡蛎的自交,福建牡蛎与长牡蛎的杂交子代表现出明显的生长及存活优势,生长潜力较好,且AG优于GA;AG组在盐度25、水温25℃条件下生长速率最大,成活率最高。研究结果可为福建牡蛎育苗行业良种选育提供参考依据。

关键词：福建牡蛎长牡蛎熊本牡蛎香港巨牡蛎种间杂交

Comparison of Sensory Characteristics of Green Tea Produced in Thai Nguyen and Phu Tho Province, Vietnam

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Journal of Food Science and Engineering 2014年第2期4卷 107-114页

作者： Dang Thi Minh luyen ha Duyen tu Philippe lebailly Nguyen Duy Thinh tu Viet Phu Department of Quality Management School of Biotechnology and Food Technology Hanoi University of Science and TechnologyHanoi 10000 Vietnam Department of Agricultural Sciences University of Liege Gembloux 5030 Belgium

Green tea is a popular product with a high consumption in Vietnam. Moreover, green tea produced in Tan Cuong commune, Thai Nguyen province, has long been recognized for its superior quality to those coming from other regions of the country. This study aims at comparing the tea from Thai Nguyen and Phu Tho and finding out if the difference can be identified through sensory analysis. Two products picked from Tan Cuong, Thai Nguyen province, and two others from Phu Ho district, Phu Tho province were evaluated by a trained panel of 12 judges （11 women and 1 man）. The sensory evaluation of the dry tea （11 descriptors） was carried out separately from the brewed tea （21 descriptors） and brewed leaf （five descriptors） using an unstructured intensity scale （10 cm）. Statistic analyses have shown differences between regions in all three groups of attributes： dry leaf, liquor and brewed leaf.

关键词： Green tea sensory analysis.