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Low-temperature synthesis of Fe_(2)(moO_(4))_(3) nanosheets: A cathode for sodium ion batteries with kinetics enhancement

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Nano Research 2021年第11期14卷 3977-3987页

作者： ha Tran Huu N.S.m.Viswanath Ngoc Hung Vu Jong-Won Lee Won Bin Im Division of materials Science and Engineering Hanyang University222Wangsimni-roSeongdong-guSeoul04763Republic of Korea School of materials Science and Engineering Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea Falcuty of Biotechnology Chemistry and Environmental EngineeringPhenikaa UniversityHanoi10000Vietnam A&A Green Phoenix Group Phenikaa Research and Technology Institute(PRATI)167 Hoang NganHanoi10000Vietnam Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)333 Techno Jungang-daeroHyeonpung-eupDalseonggunDaegu42988Republic of Korea

Sodium ion batteries (SIBs) are alternatives to lithium ion batteries (LIBs), and offer some significant benefits such as cost reduction and a lower environmental impact;however, to compete with LIBs, further research is required to improve the performance of SIBs. In this study, an orthorhombic Na super ionic conductor structural Fe_(2)(moO_(4))_(3) nanosheet with amorphous-crystalline core-shell alignment was synthesized using a facile low-temperature water-vapor-assisted solid-state reaction and applied as a cathode material for SIBs. The obtained material has a well-defined three-dimensional stacking structure, and exhibits a high specific capacity of 87.8 mAh·g^(−1) at a current density of 1 C = 91 mA·g^(−1) after 1,000 cycles, which is due to the considerable contribution of extra surface-related reaction such as the pseudo-capacitive process. This material shows significantly improved cycling and rated behavior as well as enhanced performance under high- and low-temperature conditions, as compared to the same materials prepared by the conventional high-temperature solid-state reaction. This enhancement is explained by the unique morphology in combination with the improved kinetics of the electrochemical reaction due to its lower charge transfer resistance and higher sodium ion conductivity.

关键词： low-temperature synthesis cathode sodium ion batteries kinetics Na+super ionic conductor(NASICON)

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Bifurcation Analysis of the Voltage Controlled Photosensitive Chaotic Oscillator

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Chinese Physics Letters 2013年第6期30卷 42-45页

作者： Van ha Nguyen han Jung Song Department of Nano Systems Engineering Inje UniversityGimhae 621-749Korea Center for Nano manufacturing Inje UniversityGimhae 621-749Korea

A photosensitive chaotic oscillator which can be controlled with light illumination under various control voltage levels is *** oscillator consists of a photodiode for the light input,clock switches and capacitors for the sample and hold function,a nonlinear function that creates an adjustable chaos map,and a voltage shifter that adjusts the output voltage for *** optimizing the photodiode sub-circuit by using an available photodiode model in PC-based simulation program with integrated circuit emphasis to obtain a suitable output,the full chaotic circuit is verified with standard 0.6-μm complementary metal oxide semiconductor *** dynamics are analyzed as a function of the light intensity under different control voltage *** time series,frequency spectra,transitions in state spaces,bifurcation diagrams and the largest Lyapunov exponent are improved.

关键词： oscillator chaotic function

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Fragmentation stability and retention time-shift obtained by LC-mS/mS to distinguish sialylated N-glycan linkage isomers in therapeutic glycoproteins

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Journal of Pharmaceutical Analysis 2023年第3期13卷 305-314页

作者： Chi Soo Park minju Kang Ahyeon Kim Chulmin moon mirae Kim Jieun Kim Subin Yang Leeseul Jang Ji Yeon Jang ha Hyung Kim Department of Global Innovative Drugs Graduate School of Chung-Ang UniversitySeoul06974Republic of Korea

Sialylated N-glycan isomers withα2-3 orα2-6 linkage(s)have distinctive roles in glycoproteins,but are difficult to ***-type(WT)and glycoengineered(mutant)therapeutic glycoproteins,cytotoxic T lymphocyte-associated antigen-4-immunoglobulin(CTLA4-Ig),were produced in Chinese hamster ovary cell lines;however,their linkage isomers have not been *** this study,N-glycans of CTLA4-Igs were released,labeled with procainamide,and analyzed by liquid chromatography-tandem mass spectrometry(mS/mS)to identify and quantify sialylated N-glycan linkage *** linkage isomers were distinguished by comparison of 1)intensity of the N-acetylglucosamine ion to the sialic acid ion(Ln/Nn)using different fragmentation stability in mS/mS spectra and 2)retention time-shift for a selective m/z value in the extracted ion *** isomer was distinctively identified,and each quantity(>0.1%)was obtained relative to the total N-glycans(100%)for all observed ionization *** sialylated N-glycan isomers with onlyα2-3 linkage(s)in WT were identified,and each isomer's sum of quantities was 50.4%.Furthermore,39 sialylated N-glycan isomers(58.8%)in mono-(3 N-glycans;0.9%),bi-(18;48.3%),tri-(14;8.9%),and tetra-(4;0.7%)antennary structures of mutant were obtained,which comprised mono-(15 N-glycans;25.4%),di-(15;28.4%),tri-(8;4.8%),and tetra-(1;0.2%)sialylation,respectively,with onlyα2-3(10 N-glycans;4.8%),bothα2-3 andα2-6(14;18.4%),and onlyα2-6(15;35.6%)linkage(s).These results are consistent with those forα2-3 neuraminidase-treated *** study generated a novel plot of Ln/Nn versus retention time to distinguish sialylated N-glycan linkage isomers in glycoprotein.

关键词： Therapeutic glycoprotein Sialylation Linkage isomer LC-mS/mS

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A Remark on Strong Law of Large Numbers for Weighted U-Statistics

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Acta mathematica Sinica,English Series 2014年第9期30卷 1595-1605页

作者： Hyung-Tae ha mei Ling HUANG Department of Applied Statistics Gachon University Department of mathematics and Statistics Brock University

Let （X, Xn; n≥ 1} be a sequence of i.i.d, random variables with values in a measurable space （S,8） such that E｜h（X1, X2,..., Xm）｜〈 ∞, where h is a measurable symmetric function from Sm into R = （-∞, ∞）. Let {wn,i1,i2 im ; 1 ≤ i1 〈 i2 〈 …… 〈im 〈 n, n ≥ m} be a matrix array of real numbers. motivated by a result of Choi and Sung （1987）, in this note we are concerned with establishing a strong law of large numbers for weighted U-statistics with kernel h of degree m. We show that whenever SUP n≥m max1〈i1〈i2〈…〈im≤｜wn i1,i2 i,im｜〈∞, where 0 = Eh（X1, X2,..., Xm）. The proof of this result is based on a new general result on complete convergence, which is a fundamental tool, for array of real-valued random variables under some mild conditions.

关键词： Strong law of large numbers weighted U-statistics complete convergence

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Anti TB drug resistance in Tanga,Tanzania:a cross sectional facility base prevalence among pulmonary TB patients

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Asian Pacific Journal of Tropical medicine 2015年第11期8卷 887-893页

作者： ha Abubakar S.Hoza Sayoki G.m.mfinanga Brigitte Knig Department of medical microbiology & Epidemiology of Infectious Diseases Medical FacultyUniversity of Leipzig Department of microbiology & Parasitology.Sokoine University of Agriculture National Institute for medical Research(NImR)

Objective:To determine the prevalence and risk factors associated with drug resistance tuberculosis(TB) at facility-base level in Tanga,***:A total of 79 mycobacterium tuberculosis(mTB) isolates included in the study were collected from among372(312 new and 60 previously treated) TB suspects self referred to four TB clinics during a prospective study conducted from November 2012 to January *** and drug susceptibility test of the isolates was performed at the institute of medical microbiology and epidemiology of infectious diseases,University hospital,Leipzig,*** on the patient's characteristics were obtained from structured questionnaire administered to the patients who gave informed verbal *** bivariate logistic regression analysis was performed to assess the risk factors for drug *** significance level was determined at PmDRTB were 12.7%and 6.3%*** prevalence of any drug resistance and mDRTB among new cases were 11.4%and 4.3%respectively,whereas among previously treated cases was 22.2%*** treated patients were more likely to develop anti-TB drug *** was no association between anti-TB drug resistances(including mDRTB) with the risk factors ***:High proportions of anti TB drug resistance among new and previously treated cases observed in this study suggest that,additional efforts still need to be done in identifying individual cases at facility base level for improved TB control programmes and drug resistance survey should continuously be monitored in the country.

关键词： Pulmonary tuberculosis Prevalence Drug resistance

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基于龈沟液炎症因子水平及牙齿咬合功能探讨无托槽隐形矫治与固定矫治对错[牙合]畸形患者的治疗效果

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四川生理科学杂志 2024年第7期46卷 1421-1424,1469页

作者：赵珍古力巴哈·买买提力张娟娟刘博永城市人民医院口腔科河南商丘476600 新疆医科大学第二附属医院口腔科新疆乌鲁木齐830000 永城市口腔医院口腔科河南商丘476600

目的:对比无托槽隐形矫治与固定矫治错[牙合]畸形患者的治疗效果及对龈沟液炎症因子水平、牙齿咬合功能的影响。方法:回顾性收集我院2021年5月至2023年5月收治的92例错[牙合]畸形患者的病例资料,按手术方案不同分为两组(n=46),观察组接... 详细信息

目的:对比无托槽隐形矫治与固定矫治错[牙合]畸形患者的治疗效果及对龈沟液炎症因子水平、牙齿咬合功能的影响。方法:回顾性收集我院2021年5月至2023年5月收治的92例错[牙合]畸形患者的病例资料,按手术方案不同分为两组(n=46),观察组接受无托槽隐形矫治,对照组接受固定矫治。对比两组患者矫治6m后矫治效果;矫治前、矫治3 m、6 m后牙周健康指标,包括牙龈指数(Gingival index,GI)、龈沟出血指数(Sulcus bleeding index,SBI)、菌斑指数(Plaqueindex,PLI)、牙周探诊深度(Periodontaldepth,PD)以及并发症发生率,并采用Tee Tester咬合力检测仪检测矫治前、矫治3 m、6 m后牙齿咬合功能([牙合]力总值、[牙合]力中心点最大位移、[牙合]力不对称指数),采用酶联免疫吸附试验检测矫治前、矫治3 m、6 m后龈沟液炎症因子,如白细胞介素-6(Interleukin-6,IL-6)、可溶性细胞间粘附分子-1(Soluble intercellular adhesion molecule-1,sICAm-1)、白细胞介素-1β(Interleukin-1β,IL-1β)水平。结果:观察组总有效率97.83%(45/46)相较于对照组78.26%(36/46)更高(Pm-1、IL-1β水平均明显升高,其中对照组更为显著(P<0.05);观察组并发症发生率4.35%(2/46)相较于对照组21.74%(10/46)更低(P<0.05)。结论:经无托槽隐形矫治错[牙合]畸形患者整体矫治效果优于固定矫治。

关键词：无托槽隐形矫治错[牙合]畸形龈沟液炎症因子固定矫治牙齿咬合功能

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Water stable and matrix addressable OLED fiber textiles for wearable displays with large emission area

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npj Flexible Electronics 2022年第1期6卷 664-671页

作者： hayoung Song Young Jin Song Jinwook Hong Ki Suk Kang Sera Yu ha-Eun Cho Jae-Hun Kim Sung-min Lee School of materials Science and Engineering Kookmin UniversitySeoul 02707Republic of Korea School of Electrical Engineering KAISTDaejeon 34141Republic of Korea

Organic light-emitting diode(OLED)fibers with favorable electroluminescence properties and interconnectable pixel configurations have represented the potential for wearable electronic textile ***,the current technology of OLED fiber-based textile displays still leaves to be desired due to several challenges,including limited emission area and lack of encapsulation *** we present a fibrous OLED textile display that can attain a large emission area and long-term stability by implementing addressable networks comprised of integrated phosphorescence OLED fibers and by designing multilayer *** integrated fiber configuration offers decoupled functional fiber surfaces for an interconnectable 1-dimensional OLED pixel array and a data-addressing *** triadic metal/ultrathin oxide/polymer multilayer enables not only the oxygen/water permeation inhibition but also the controllable conductive channels of dielectric *** with reliable bending stability,the long-term operation of OLED textiles in water manifests the feasibility of the present device concept toward water-resistant full-emitting-area fibrous textile displays.

关键词： fiber OLED wear

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IVF/ICSI-ET术后早期妊娠丢失患者绒毛组织拷贝数变异异常的高危因素分析

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生殖医学杂志 2024年第1期33卷 29-34页

作者：黄蕾何蕊许晓雪闫慧赵君利哈灵侠刘春莲宁夏医科大学总医院生殖医学中心银川750004 宁夏医科大学银川750004

目的探讨体外受精(IVF)/卵胞浆内单精子注射(ICSI)后行新鲜胚胎移植(ET)的早期妊娠丢失(EPL)患者绒毛组织拷贝数变异(CNV)异常的高危因素,为遗传咨询提供依据。方法采用回顾性队列研究,选择2020年6月至2022年12月就诊宁夏医科大学总医... 详细信息

目的探讨体外受精(IVF)/卵胞浆内单精子注射(ICSI)后行新鲜胚胎移植(ET)的早期妊娠丢失(EPL)患者绒毛组织拷贝数变异(CNV)异常的高危因素,为遗传咨询提供依据。方法采用回顾性队列研究,选择2020年6月至2022年12月就诊宁夏医科大学总医院生殖医学中心接受IVF/ICSI助孕新鲜胚胎移植后EPL患者中绒毛组织CNV结果异常的周期作为病例组(n=29),随机抽选同期IVF/ICSI-ET术后正常活产的周期作为对照组(n=60)。比较两组患者的一般资料、临床及实验室指标,并对病例组流产绒毛组织CNV异常的构成及占比进行分析讨论。结果(1)病例组年龄[(33.45±3.78)岁]及自然流产次数[(0.41±0.73)次]显著高于对照组[分别为(29.52±4.27)岁、(0.05±0.22)次](PmH)水平显著低于对照组[(2.49±2.05)ng/ml vs.(4.03±2.67)ng/ml,P<0.05];(2)病例组促性腺激素(Gn)启动日FSH水平[(6.63±6.31)U/L]、Gn启动日LH水平[(2.28±1.85)U/L]、HCG日LH水平[(3.05±3.28)U/L]显著高于对照组[分别为(3.10±2.13)U/L、(1.26±0.79)U/L、(1.27±1.14)U/L](P<0.05);(3)病例组患者绒毛组织拷贝数变异测序(CNV-seq)结果中染色体数目异常占比72.41%、结构异常占比27.59%;常染色体三体占比55.17%,其中16-三体和22-三体最常见(分别占比17.24%、10.34%)。结论高龄、卵巢储备功能下降可能是导致EPL患者胚胎染色体核型异常的主要因素。

关键词： IVF/ICSI 绒毛染色体拷贝数变异非整倍体

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Investigation of Punch Resistance of the Allomyrira dichtoloma Beetle Forewing

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Journal of Bionic Engineering 2018年第1期15卷 57-68页

作者： Ngoc San ha Vinh Tung Le Nam Seo Goo Smart microsystem Research Laboratory Department of Advanced Technology Fusion Division of Interdisciplinary Studies Konkuk University Seou105029 Republic of Korea Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn VIC 3122 Australia

In this study, the punch resistance of the beetle forewing was investigated to address the ability of the forewing against the external force. The punch resistance of the forewing was measured for different sizes and sexes of beetles using a conventional testing method in conjunction with the Digital Image Correlation （DIC） technique. The results showed that the maximum fracture load was measured around 23 N for the female beetle and around 20.2 N for the male beetle in the front-side punch test. moreover, the fracture load in the front-side punch test was higher than that in the back-side punch test for both male and female beetles. This means that the beetle forewing plays a protection role against external loads. Furthermore, the puncture energy in the front-side punch test for the female beetle （6.91 m J） was a little higher than that for the male beetle （5.27 mJ）. In addition, the DIC results revealed that the first crack occurred along the trachea line and the second crack then appeared in the direction that was perpendicular to the direction of the first crack. This study provides a com- prehensive understanding of the mechanical protection properties of the beetle forewing and offers a good lesson for studying lightweight bio-inspired composite material.

关键词： beetle forewing punch test punch energy digital image correlation

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Oxidative coupling of methane over LaAlO3 perovskite catalysts prepared by a co-precipitation method: Effect of co-precipitation pH value

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Journal of Energy Chemistry 2019年第8期28卷 1-8,I0001页

作者： Yujin Sim Jihoon Yoo Jeong-myeong ha Ji Chul Jung Department of Chemical Engineering Myongji UniversityYongin 17058 Republic of Korea Clean Energy Research Center Korea Institute of Science and TechnologySeoul 02792 Republic of Korea

Oxidative coupling of methane(OCm) was conducted over LaAlO3X catalysts that were prepared by a coprecipitation method using different co-precipitation pH values(X = 6–10). The aim is to investigate the effect of p H values on the catalytic activity of La AlO3 catalysts in this reaction. The results showed that the co-precipitation pH value affected greatly on the formation of chemical species of precipitate precursors in the co-precipitation step, leading to different phases of the finally obtained LaAlO3 *** the co-precipitation pH value increased up to 8, the lanthanum-related phases such as La2 O3 and La(OH)3 were gradually formed as by-products, preventing the formation of LaAlO3 perovskite crystalline structure and facilitating the formation of oxygen vacancies on catalyst surface. However, at pH value of9 or higher, the lanthanum content in the precipitate precursor was increased greatly. Not LaAlO3 perovskite but lanthanum-related phases were developed as main phases, reducing their catalytic activities in this reaction. Among LaAlO3 catalysts, the one prepared at pH = 8 showed the highest C2 yield due to its well-developed oxygen vacancies and electrophilic lattice oxygen. Therefore, the co-precipitation pH value strongly affected the LaAlO3 catalyst activity in OCm reaction. A precious pH control should be required to prepare various perovskite catalysts for the OCm.

关键词： LaAlO3 Perovskite Oxidative coupling of methane Co-precipitation pH value

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