检索结果-南通市图书馆

A mild, configurable, flexible CoNi-LDH（v）/Zn battery based on H-vacancy-induced reversible Zn2+ intercalation

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 498-508页

作者： Xinyue Cheng Dingsheng Wu Hao Gao Qingqing Wang Pengfei Lv Sam S.yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University School of Mechanical Engineering Korea University

Flexible Zn-based batteries have attracted increasing research interest as essential components of wearable energy storage ***,the advancement of flexible aqueous Zn-based batteries based on Co-Ni layered double hydroxide （CoNi-LDH） as the cathode material is hampered by their poor cycling stability and the corrosiveness of alkaline ***,CoNi-LDH nanosheets enriched with H vacancies (CoNi-LDH（v）) were constructed on a flexible carbon cloth （CC） substrate via electrochemical deposition and *** Zn-based battery comprising CoNi-LDH（v）@CC as the cathode exhibited highly reversible conversion reactions and stable operation in 3 M ZnSO4electrolyte （pH=4）.The battery delivered an excellent specific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling stability（53.9%,900 cycles）,and high discharging *** abundant H vacancies served as active sites for the reversible intercalation of Zn2+and the extravasation of NO3-generated channels and space for Zn2+transport and storage,together enabling an excellent Zn2+storage ***,a sandwich-structured solid-state CoNi-LDH（v）@CC//Zn@CC battery was fabricated and was found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencapsulated battery powered a digital watch under various deformation conditions and operated stably for 80 ***,the flexible battery displayed outstanding customizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** proposed engineering strategy contributes to the realization of textiles with truly wearable energy-storage devices.

关键词： CoNi/Zn battery H vacancies Mild aqueous electrolyte Tailorable battery Wearable energy storage device

Herbal medicine use in Republic of Korea to alleviate side effects of COVID-19 vaccines:A cross-sectional study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Medicine 2023年第4期21卷 361-368页

作者： Hae-Chang yoon Department of Public Health Graduate School of Kyungpook National UniversityDaegu 41944Republic of Korea

Objective:Coronavirus disease 2019(COVID-19)has spread worldwide,and several virus variants have *** are administered to help prevent the *** Republic of Korea,most people take herbal *** study investigated the use of herbal medicine to counter the side effects of COVID-19 ***:This cross-sectional study was conducted using an online ***-square tests were used to determine differences in the use of herbal medication according to sociodemographic *** two-sample and paired t-tests were performed to examine the effect and satisfaction of herbal medicine use for countering the side effects of COVID-19 ***-way analysis of variance was used to determine vaccine-related ***:A total of 233 and 181 participants received the first and second doses of COVID-19 vaccines,*** majority of herbal medicine users were in their thirties,had a bachelor’s degree,suffered from side effects of vaccination,and received Vaxzevria for their first COVID-19 vaccine dose and Comirnaty for their second *** herbal medicine group had a higher satisfaction level of postvaccination side effects than the non-herbal medicine group(P<0.0001).The numeric rating scale scores for vaccination side effects were lower among participants who took herbal medication to alleviate those symptoms(P<0.0001).The most commonly used herbal formula was ***:A third of participants receiving COVID-19 vaccines used herbal medication to counter the side effects of *** use of herbal medicine was associated with age,education level,vaccine brand,and whether side effects of vaccination *** medication use was associated with greater satisfaction compared to vaccine recipients not using herbal medication.

关键词： COVID-19 vaccines Herbal medicine Side effects Republic of Korea

Platycodon grandiflorum extract represses up-regulated adipocyte fatty acid binding protein triggered by a high fat feeding in obese rats

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2007年第25期13卷 3493-3499页

作者： yoon Shin Park Yoosik yoon Hong Seok Ahn Division of Intractable Diseases Center for Biomedical Sciences National Institute of Health 194 Tongillo Eunpyeong-gu Seoul 122-701 South Korea College of Medicine Chung Ang University 221 Heukseok-dong Dongjak-gu Seoul 156-756 South Korea Sungshin Women's University Department Food and Nutrition 5 Dongsun-Dong Sungbuk-Gu Seoul 136-742 South Korea

AIM: To investigate the effect of Platycodon grandi- florum extract (PGE) on lipid metabolism and FABP mRNA expression in subcutaneous adipose tissue of high fat diet-induced obese rats. METHODS: PGE was treated to investigate the inhibitory effect on the pre-adipocyte 3T3-L1 differentiation and pancreatic lipase activity. Male Sprague-Dawley rats with an average weight of 439.03 ± 7.61 g were divided into four groups: the control groups that fed an experimental diet alone (C and H group) and PGE treatment groups that administered PGE along with a control diet or HFD at a concentration of 150 mg/kg body weight (C + PGE and H + PGE group, respectively) for 7 wk. Plasma total cholesterol (TC) and triglycerol (TG) concentrations were measured from the tail vein of rats. Adipocyte cell area was measured from subcutaneous adipose tissue and the fatty acid binding protein (FABP) mRNA expression was analyzed by northern blot analysis. RESULTS: PGE treatment inhibited 3T3-L1 pre-adipocyte differentiation and fat accumulation, and also decreased pancreatic lipase activity. In this experiment, PGE signifi cantly reduced plasma TC and TG concentrations as well as body weight and subcutaneous adipose tissue weight. PGE also significantly decreased the size of subcutaneous adipocytes. Furthermore, it significantly repressed the up-regulation of FABP mRNA expression induced by a high-fat feeding in subcutaneous adipose tissue. CONCLUSION: PGE has a plasma lipid lowering-effect and anti-obesity effect in obese rats fed a high fat *** these results, we can suggest the possibility that PGE can be used as a food ingredient or drug component to therapeutically control obesity.

关键词： Obesity High fat diet Platycodon grandiflorum extract Fatty acid binding protein Subcutaneousadipose tissue

A survey on deep learning-based Monte Carlo denoising

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computational Visual Media 2021年第2期7卷 169-185页

作者： Yuchi Huo Sung-eui yoon KAIST Daejeon31414Republic of Korea

Monte Carlo(MC)integration is used ubiquitously in realistic image synthesis because of its flexibility and ***,the integration has to balance estimator bias and variance,which causes visually distracting noise with low sample *** solutions fall into two categories,in-process sampling schemes and post-processing reconstruction *** report summarizes recent trends in the post-processing reconstruction *** years have seen increasing attention and significant progress in denoising MC rendering with deep learning,by training neural networks to reconstruct denoised rendering results from sparse MC *** of these techniques show promising results in real-world applications,and this report aims to provide an assessment of these approaches for practitioners and researchers.

关键词： rendering Monte Carlo(MC)denoising deep learning ray tracing

Influence of gut microbiome composition on effect variations of anti-cholesterol treatment among individual mice

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第5期13卷 3054-3065页

作者： Hyemin Oh Yohan yoon Risk Analysis Research Center Sookmyung Women’s UniversitySeoul 04310Korea Department of Food and Nutrition Sookmyung Women’s UniversitySeoul 04310Korea

This study investigated if the variation in the effect of anti-cholesterol(AC)treatment on individual mice are related to gut microbiome *** bile salt hydrolase(BSH)activity of 23 commercial fermented milk products was examined to select a fermented milk product for AC *** were fed to different diets for 6 weeks:high-fat(60%of total calories from fat;D1),high-dietary fibre(20%cellulose;D2),and low-fat(17.2%of total calories from fat;D3)diets to change their gut ***,faecal microbiome was transplanted(FMT)into mice treated with high cholesterol diet contained 2%cholesterol,followed by AC or non-AC(sterile tap water,STW)*** groups with normal(NC)and highcholesterol diets(PC)were prepared for both AC and STW *** experimental groups were subjected to serum and liver cholesterol,cholesterol metabolism-related(CMR)gene expression,and intestinal microbiome analyses.D3-FMT mice showed the most significant enhancements in cholesterol ratio and decreased hepatic cholesterol levels with AC ***,upregulation of the Cyp7a1 gene expression was observed in this ***,the intestinal microbiome analysis indicated higher abundances of BSH-producing Eubacterium,Bifidobacterium,and Parabacteroides in the D3-FMT+AC group compare to others,potentially contributing to increased bile acid synthesis.

关键词： ut microbiome Anti-cholesterol Bile salt hydrolase(BSH)activity Bile acid synthesis Faecal microbiota transplantation

Chloride-Bridged Dimeric SalphenZr(IV) Cobaltate Catalyst Unleashes the Potential of Base-Free Carbonylative Polymerization for Biodegradable PHAs

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第24期41卷 3560-3566页

作者： Vinothkumar Ganesan Sungho yoon Department of Chemistry Chung Ang University84 Heukseok-roDongjak-guSeoul06974 Republic of Korea

Poly(3-hydroxyalkanoates) (PHAs) are a promising class of biodegradable polymers,exhibiting properties comparable to traditional petroleum-based ***,the widespread commercialization of PHAs is hindered by the absence of an efficient and economically viable catalytic system,impeding their competitiveness against non-biodegradable *** an effort to address this challenge,we present a study on a newly developed chloro-bridged dimeric salphen zirconium cobaltate complex for the direct synthesis of PHAs via carbonylative polymerization of *** catalytic system demonstrates favorable activity under mild reaction conditions,enabling complete monomer conversion and an impressive 92% selectivity towards PHA *** meticulous control experiments and mechanistic studies,we have gained crucial insights into the polymerization ***,our findings challenge the prevailing notion of sequential ring-opening polymerization of in-situ generated β-lactones as the primary ***,we demonstrate that the polymerization predominantly proceeds through direct co-polymerization of epoxide and carbon monoxide,unveiling a unique and efficient mechanism for PHA synthesis.

关键词： C1 building blocks Chloro bridged salphenZr(IV)dimer Homogeneous catalysis Carbonylation Carbonylative polymerization Biodegradable polymer Poly(3-hydroxyalkanoates)

Effect of change of sand properties on travel distance of ricocheted debris

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2021年第4期17卷 1486-1495页

作者： yoon Keon Kim Woo Chun Choi Department of Mechanical Engineering Korea University145 Anam-roSeongbuk-guSeoul02841Republic of Korea

The debris from exploded buildings can ricochet after colliding with the ground,thus increasing the debris travel distance and danger from any associated impacts or *** reduce this danger,the travel distance of ricocheted debris must be accurately *** study analyzed the change in the travel distance of ricocheted concrete debris relative to changes in the properties of a sand *** shear tests were conducted to measure the change in internal friction angle as a function of temperature and water content of the *** element analysis(FEA)was then applied to these variables to predict the speed and angle of the debris after *** FEA results were compared with results of low-speed ricochet experiments,which employed variable temperature and water *** travel distance of the debris was calculated using MATLAB,via trajectory equations considering the drag *** the internal friction angle decreased,the shear stress decreased,leading to deeper penetration of the debris into the *** the loss of kinetic energy increased,the velocity and travel distance of the ricocheted debris *** in the ricochet velocity and travel distance of the debris,according to changes in the internal friction angle,indicated that the debris was affected by the environment.

关键词： Ricochet Exploded debirs Environmental change Sand Temperature Water content Internal friction angle Travel distance

Convergence of Stereo Vision-Based Multimodal YOLOs for FasterDetection of Potholes

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第11期73卷 2821-2834页

作者： Sungan yoon Jeongho Cho Department of Electrical Engineering Soonchunhyang UniversityAsan31538Korea

Road potholes can cause serious social issues,such as unexpected damages to vehicles and traffic *** efficient road management,technologies that quickly find potholes are required,and thus researches on such technologies have been conducted *** three-dimensional(3D)reconstruction method has relatively high accuracy and can be used in practice but it has limited application owing to its long data processing time and high sensor maintenance *** two-dimensional(2D)vision method has the advantage of inexpensive and easy application of ***,although the 2D vision method using the convolutional neural network(CNN)has shown improved pothole detection performance and adaptability,large amount of data is required to sufficiently train the ***,we propose a method to improve the learning performance of CNN-based object detection model by artificially generating synthetic data similar to a pothole and enhancing the learning ***,to make the defective areas appear more contrasting,the transformed disparity map(TDM)was calculated using stereo-vision cameras,and the detection performance of the model was further improved through the late fusion with RGB(Red,Green,Blue)***,through the convergence of multimodal You Only Look Once(YOLO)frameworks trained by RGB images and TDMs respectively,the detection performance was enhanced by 10.7%compared with that when using only ***,the superiority of the proposed method was confirmed by showing that the data processing speed was two times faster than the existing 3D reconstruction method.

关键词： CNN YOLO disparity map stereo vision pothole

Turning an FDA-approved therapeutic into an AIEgen for imaging live bacteria and for bacterial detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2021年第2期2卷 1-2页

作者： Juyoung yoon Department of Chemistry and Nanoscience Ewha Womans UniversitySeoulRepublic of Korea

Aggregation Induced Emission(AIE)is an attractive,fluorescent-based phenomenon that can be used to design fluorescent imaging agents and fluorescent *** this highlight,we discuss a recently reported study that identifies the chemical scaffold of an FDA-approved therapeutic(deferasirox)as a molecule with AIE-like properties(AIEgen).Utilizing its therapeutic efficacy for bacterial biofilms,deferasiroxderivatives were shown able to treat and image bacteria biofilms and detect a bacterial *** demonstrates the potential of AIE for drug design as this allows the simultaneous ability to image the therapeutic’s location and mode of action.

关键词： Aggregation-Induced Emission Antimicrobials Fluorescence imaging and Theranostics