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Dry eye rate and its relationship with disease stage in patients with primary hypertension:a cross-sectional study in Vietnam

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international Journal of Ophthalmology(English edition) 2024年第4期17卷 653-658页

作者： tran tat thang pham Hong Phuong Nguyen Sa Huynh Nguyen trung Kien NguyenDuy toan Nguyen t.i thu Ha Le Ha Khoa Nguyen Huu Dung thai Doan thang Le Viet thang Nghe An Eye Hospital Nghe An 43000Vietnam Nghe An Friendship General Hospital Nghe An 43000Vietnam Military Hospital 103 Ha Noi 100000Vietnam Vietnam Military Medical University Ha Noi 100000Vietnam Hanoi Medical University Ha Noi 100000Vietnam Bạch Mai Hospital Ha Noi 100000Vietnam ttH Vinh General Hospital Nghe An 100000Vietnam

AiM:to determine the dry eye(DE)rate and its relationship with disease stage in patients with primary ***:A cross-sectional study included 432 patients with primary hypertension(with an equal number of patients in each group:144 in stage Ⅰ,Ⅱ,and Ⅲ hypertension)and 144 healthy subjects as a control *** Ocular Surface Disease index(OSDi)and Schirmer Ⅰ test without anesthetics were conducted on all 576 *** with OSDi scoresirmer Ⅰ values equal to or under 10 mm were diagnosed with ***:the ratio of DE in hypertension patients was higher than in the control group(41.7%versus 18.8%;Pthe proportion of patients with DE increased gradually according to the hypertension stage:27.1% in stage Ⅰ,40.3% in stage Ⅱ,and 57.6% in stage Ⅲ,Ption of hypertension,plasma urea,creatinine,and high-sensitivity C-reactive prot.in(CRP-hs)levels in hypertension patients with DE were higher than those without DE,Ption of hypertension,diabetes mellitus,elevated plasma creatinine,and CRP-hs levels were independent factors associated with DE in primary hypertension patients,Pis a common disorder associated with advanced age,a long duration of hypertension,diabetes mellitus,elevated plasma CRP-hs,and creatinine levels in patients with primary hypertension.

关键词： primary hypertension dry eye stage of hypertension plasma creatinine

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循环三轴试验加载频率和压实度对重塑砂土液化行为的影响

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岩土力学 2024年第6期45卷 1813-1823页

作者： tHUY Do Van tiEP pham Duc HiEU Nguyen Van thang pham Cao 勒奎东技术大学特殊工程技术研究所越南河内越南航空科技协会越南河内

通过对各向同性固结不排水试样进行循环三轴试验,研究了饱和重塑砂土的液化行为。试验采用恒幅正弦载荷,通过测量剪切模量、阻尼比、轴向应变和超孔隙水压力比的变化,评估了加载频率(分别为0.1、0.5、1.0 Hz)和压实度(分别为0.95、0.90... 详细信息

通过对各向同性固结不排水试样进行循环三轴试验,研究了饱和重塑砂土的液化行为。试验采用恒幅正弦载荷,通过测量剪切模量、阻尼比、轴向应变和超孔隙水压力比的变化,评估了加载频率(分别为0.1、0.5、1.0 Hz)和压实度(分别为0.95、0.90和0.80)对砂土液化行为的影响。试验结果表明,对于压实度为0.95的砂样,在5000次加载循环中,0.1 Hz的加载频率对液化过程影响甚微;而对于压实度为0.90和0.80的砂样,此频率的影响显著。对于压实度为0.80的砂样,当频率增加到0.5 Hz时几乎一加载就直接发生液化。这表明增加加载频率会加快液化速度,而增加压实度则会减慢液化速度。因此,通过一系列的试验可以模拟现场砂土在不同频率下的动荷载条件。试验结果表明,饱和砂土的液化行为由以下因素决定:(1)试样的压实度越低,液化越容易发生;(2)加载频率越高,液化越容易发生;(3)循环轴向应变越大,发生液化所需的循环次数越少;(4)超孔隙水压力随加载循环次数增加,直至试样完全液化。

关键词：液化行为加载频率循环三轴试验饱和固结不排水条件重塑砂土压实度

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EP Aquarii:A New Picture of the Circumstellar Envelope

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Research in Astronomy and Astrophysics 2024年第3期24卷 83-105页

作者： pham t.Nhung Do t.Hoai Pierre Darriulat pham tuan-Anh pham N.Diep Nguyen B.Ngoc tran t.thai Department of Astrophysics Vietnam National Space CenterVietnam Academy of Science and Technology18Hoang Quoc VietNghia DoCau GiayHa Noivietnam

New analyses of earlier ALMA observations of oxygen-rich AGB star EP Aquarii are presented,which complete a previously published analysis and offer a different.interpretation of the morpho-kinematics of the circumstellar *** birth of the equatorial density enhancement(EDE)is shown to occur very close to the star where evidence for rotation has been *** to the star and where outflows have been observed:their interaction with the gas of the nascent EDE is seen to play an important role in the development of the wind and the evolution of its radial velocity from 8 to 10 km s^(-1) on the polar symmetry axis to~2 km s^(-1) at the *** implies complex morpho-kinematics:making reliable interpretations with reasonable confidence is *** particular,it questions an earlier interpretation implying the presence of a white dwarf companion orbiting the star at an angular distance of -0″4 from its *** proposes instead an interpretation in terms of a standard mass ejection associated with a shock wave leaving a void of emission in its *** Doppler velocity wings are seen to consist of two components,the upper velocity end of the global wind,reaching above±12 km s^(-1),and an effective line broadening,confined wit.in 200 mas from the center of the star,reaching above±20 km s^(-1) and interpreted as caused by the pattern of shock waves resulting from the interaction between stellar pulsation and convective cell partition.

关键词： stars AGB and post-AGB-(stars) circumstellar matter-radio lines stars

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越南杧果产业发展趋势预测与启示

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中国南方果树 2024年第4期53卷 251-258,264页

作者：邓志新 VU thanh Hai 刘洋铭 pham Quang thang 西南林业大学绿色发展研究院昆明650224 越南国立农业大学越南河内云南机电职业技术学院昆明650201 越南有机农业工艺研究院越南河内

近年来,中国已成为越南杧果出口主要目标市场。本文以越南杧果产业为研究对象,运用“全程质量支撑技术体系”理论,分析其杧果产业发展现状及关键技术约束集,预测越南杧果产业发展趋势,推测其对中国杧果产业近期、中期、长期的影响,提出... 详细信息

近年来,中国已成为越南杧果出口主要目标市场。本文以越南杧果产业为研究对象,运用“全程质量支撑技术体系”理论,分析其杧果产业发展现状及关键技术约束集,预测越南杧果产业发展趋势,推测其对中国杧果产业近期、中期、长期的影响,提出我国应对策略建议,助力我国杧果产业发展。

关键词：越南杧果产业全程质量支撑技术体系中国大青杧

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Rapid design of top-performing metal-organic frameworks with qualitative representations of building blocks

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npj Computational Materials 2023年第1期9卷 585-598页

作者： Yigitcan Comlek thang Duc pham Randall Q.Snurr Wei Chen Department of Mechanical Engineering Northwestern UniversityEvanstonILUSA Department of Chemical and Biological Engineering Northwestern UniversityEvanstonILUSA

Data-driven materials design often encounters challenges where systems possess qualitative(categorical)***,representing Metal-organic frameworks(MOFs)through different building blocks poses a challenge for designers to incorporate qualitative information into design optimization,and leads to a combinatorial challenge,with large number of MOFs that could be *** t.is work,we integrated Latent Variable Gaussian Process(LVGP)and Multi-Objective Batch-Bayesian Optimization(MOBBO)to identify top-performing MOFs adaptively,autonomously,and *** showcased that our method(i)requires no specific physical descriptors and only uses building blocks that construct the MOFs for global optimization through qualitative representations,(ii)is application and property independent,and(iii)provides an interpretable model of building blocks with physical *** searching only~1%of the design space,LVGP-MOBBO identified all MOFs on the Pareto front and 97%of the 50 top-performing designs for the CO_(2) working capacity and CO_(2)/N2 selectivity properties.

关键词： properties qualitative autonomous

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Effect of heating time on structural,morphology,optical,and photocatalytic properties of g-C3N4 nanosheets

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Chinese Physics B 2020年第5期29卷 504-508页

作者： Nguyen Manh Hung Le t.i Mai Oanh Lam t.i Hang pham Do Chung pham t.i Duyen Dao Viet thang Nguyen Van Minh Center for Nano Science and technology Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi100000Vietnam Department of Physics Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi100000Vietnam Faculty of Basic Sciences Hanoi University of Natural Resources and Environment41A Phu Dien RoadNorth Tu LiemHanoi100000Vietnam Hanoi University of Mining and Geology Duc Thang wardNorth Tu Liem DistrictHanoi100000Vietnam Military science Academy 322 Le Trong Tan streetDinh CongHoang MaiHanoi100000Vietnam

Effect of heating time on the structural,morphology,optical,and photocatalytic properties of graphitic carbon nit.ide(g-C3N4)nanosheets prepared at 550℃in Ar atmosphere is *** investigations are carried out by using x-ray diffraction(XRD),scanning electron microscopy(SEM),Fourier-transform infrared spectroscopy(FtiR),UV-vis absorption,and photoluminescence(PL).At a heating temperature of 550℃,g-C3N4 nanocrystals are formed after 0.5 h and become more orderly as the heating time *** surface area of the g-C3N4 nanosheets significantly increases as the preparation time *** g-C3N4 prepared in 2.5 h shows the highest photocatalytic performance,decomposing completely 10 ppm RhB solution under xenon lamp irradiation for 2.0 h.

关键词： nanosheets photocatalytic heating time Ar atmosphere

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A Simple Approach to the Fabrication of Graphene-Carbon Nanotube Hybrid Films on Copper Substrate by Chemical Vapor Deposition

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Journal of Materials Science & technology 2015年第5期31卷 479-483页

作者： Nguyen Van Chuc Cao t.i thanh Nguyen Van tu Vuong t.Q Phuong pham Viet thang Ngo t.i thanh tam institute of Materials Science Vietnam Academy of Science and Technology Hanoi University of Science Vietnam National University

in t.is study,graphene-carbon nanotube（CNt） hybrid films were directly synthesized on polycrystalline copper（Cu） substrates by thermal chemical vapor deposition（CVD） *** films were synthesized on Cu substrate at 1000 ℃ in mixture of gases:argon（Ar）,hydrogen（H2）,and methane（CH4）.then,carbon nanotubes（CNts） were grown uniformly on the surface of graphene/Cu films at 750 ℃ in mixture of Ar,*** acetylene（C2H2） *** salt FeCl3solution deposited onto the surface of graphene/Cu substrate by spin coating method was used as precursor for the growth of the *** density and quality of the CNts on the surface of graphene/Cu films can be controlled by varying the concentration of FeCl3salt catalyst.

关键词： Graphene Carbon nanotube(CNt) Hybrid films Copper

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排卵期女性用自然周期、改良自然周期或人工子宫内膜制剂进行一次冷冻胚胎移植后活产率的临床研究

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中国临床药理学杂志 2024年第16期40卷 2456-2456页

作者： HO V N A pham t D NGUYEN N t 孟海峰

本研究为一项随机、开放标签研究,研究对象为18~45岁的排卵期女性,受试者按照1:1:1的比例被随机分为自然周期组、改良自然周期组或人工周期组。由于研究干预措施的性质特殊,故本试验不设盲。自然周期组不使用雌激素、孕酮或人绒毛膜促... 详细信息

本研究为一项随机、开放标签研究,研究对象为18~45岁的排卵期女性,受试者按照1:1:1的比例被随机分为自然周期组、改良自然周期组或人工周期组。由于研究干预措施的性质特殊,故本试验不设盲。自然周期组不使用雌激素、孕酮或人绒毛膜促性腺激素(hCG);改良自然周期组使用hCG来触发排卵;人工周期组使用口服戊酸雌二醇(从月经第2~4天开始,每天8mg)和阴道孕酮(从子宫内膜厚度≥7mm开始,每天800mg)。

关键词：人工周期戊酸雌二醇子宫内膜厚度活产率自然周期冷冻胚胎移植排卵期孕酮

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Adaptive data fusion framework for modeling of non-uniform aerodynamic data

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Chinese Journal of Aeronautics 2023年第7期36卷 316-336页

作者： Vinh pham Maxim tYAN tuan Anh NGUYEN Chi-Ho LEE L.V.thang NGUYEN Jae-Woo LEE Department of Aerospace information Engineering Konkuk UniversitySeoul 05029Republic of Korea Konkuk Aerospace Design-Airwort.iness institute Konkuk UniversitySeoul 05029Republic of Korea

Multi-fidelity Data Fusion(MDF)frameworks have emerged as a prominent approach to producing economical but accurate surrogate models for aerodynamic data modeling by integrating data with different fidelity ***,most existing MDF frameworks assume a uniform data structure between sampling data sources;thus,producing an accurate solution at the required level,for cases of non-uniform data structures is *** address t.is challenge,an Adaptive Multi-fidelity Data Fusion(AMDF)framework is proposed to produce a composite surrogate model which can efficiently model multi-fidelity data featuring non-uniform ***,the design space of the input data with non-uniform data structures is decomposed into subdomains cont.ining simplified ***,different MDF frameworks and a rule-based selection process are adopted to construct multiple local models for the subdomain *** the other hand,the Enhanced Local Fidelity Modeling(ELFM)method is proposed to combine the generated local models into a unique and continuous global ***,the resulting model inherits the features of local models and approximates a complete database for the whole design *** validation of the proposed framework is performed to demonstrate its approximation capabilities in(A)four multi-dimensional analytical problems and(B)a practical engineering case study of constructing an F16C fighter aircraft’s aerodynamic *** comparisons of the generated models using the proposed AMDF framework and conventional MDF approaches using a single global modeling algorithm are performed to reveal the adaptability of the proposed approach for fusing multi-fidelity data featuring non-uniform ***,the results indicated that the proposed framework outperforms the state-of-the-art MDF approach in the cases of non-uniform data.

关键词： Aerodynamic modeling Data fusion Diverse data structure Multi-fidelity data Multi-fidelity surrogate modeling

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越南昆嵩地体早古生代花岗岩地球化学特征及对三岐–福山洋俯冲的响应

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大地构造与成矿学 2024年

作者：赖宗婷张玉芝余小清钱鑫 pham trung Hieu 徐畅王岳军中山大学地球科学与工程学院广东省地球动力作用与地质灾害重点实验室南方海洋科学与工程广东省实验室(珠海) University of Science VNU-HCM 227Nguyen Van Cu Street

昆嵩地体位于印支陆块东部,广泛发育早古生代岩浆作用,是了解东南亚原特提斯洋演化的关键地区。但长久以来此地区原特提斯洋的俯冲极性与时间争议较大。本文对该地体的一套早古生代花岗岩进行了岩相学、锆石U-Pb年代学、锆石原位Hf同位... 详细信息

昆嵩地体位于印支陆块东部,广泛发育早古生代岩浆作用,是了解东南亚原特提斯洋演化的关键地区。但长久以来此地区原特提斯洋的俯冲极性与时间争议较大。本文对该地体的一套早古生代花岗岩进行了岩相学、锆石U-Pb年代学、锆石原位Hf同位素以及全岩主微量和Sr-Nd-Pb同位素研究。年代学结果显示该套花岗岩的结晶年龄为446～440Ma。花岗岩样品的K2O为2.14%～5.92%, Na2O+K2O为5.49%～8.25%,显示高钾钙碱性特征。其A/CNK值为1.03～1.18,为过铝质S型花岗岩。样品均显示明显的大离子亲石元素（如Rb、th和U等）富集以及高场强元素（如Nb、ta、Sr和ti等）亏损,并具有强烈的Eu负异常（Eu/Eu*=0.23～0.69）。样品呈现变化范围较大的锆石原位Hf同位素组成(εHf（t）=-19.84～+1.99)以及新太古代-中元古代的Hf二阶模式年龄(tDM2=2.70～1.28 Ga),且具有富集的全岩Nd同位素组成(εNd（t）=-10.3～-6.5)。本文研究显示该套早古生代花岗岩是古老变沉积岩和基性变火成岩部分熔融的产物。结合区域地质研究表明,越南中部昆嵩地块早古生代花岗岩形成于俯冲作用下的岛弧背景,响应于区域上印支陆块内部原特提斯三岐–福山洋的南向俯冲过程。

关键词：昆嵩地体早古生代 S型花岗岩原特提斯洋三岐–福山洋俯冲作用

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