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Biomimetic Fe_(7)S_(8)/Carbon electrocatalyst from[FeFe]-Hydrogenase for improving pH-Universal electrocatalytic hydrogen production Special Collection:Aggregation-Induced Processes and Functions

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Aggregate 2024年第1期5卷 451-459页

作者： Dohun Kim Subramani Surendran Sejin im Jaehyoung Lim Kyoungsuk Jin Ki Tae Nam Uk Sim Department of Energy Science&Engineering Daegu Gyeongbuk Institute of Science&Technology(DGIST)DaeguRepublic of Korea Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology(KENTECH)NajuRepublic of Korea Department of Chemistry Korea UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Seoul National UniversitySeoulRepublic of Korea

Efficient and cost-effective electrocatalysts that can operate across a wide range of pH conditions are essential for green hydrogen *** by biological systems,Fe_(7)S_(8)nanoparticles incorporated on polydopamine matrix electrocatalyst were synthesized by co-precipitation and annealing *** resulting Fe_(7)S_(8)/C electrocatalyst possesses a three-dimensional structure and exhibits enhanced electrocatalytic performance for hydrogen production across various pH ***,the Fe_(7)S_(8)/C electrocatalyst demonstrates exceptional activity,achieving low overpotentials of 90.6,45.9,and 107.4 mV in acidic,neutral,and alkaline environments,*** impedance spectroscopy reveals that Fe_(7)S_(8)/C exhibits the lowest charge transfer resistance under neutral conditions,indicating an improved proton-coupled electron transfer ***-wave electron paramagnetic resonance results confirm a change in the valence state of Fe from 3+to 1+during the hydrogen evolution reaction(HER).These findings closely resemble the behavior of natural[FeFe]-hydrogenase,known for its superior hydrogen production in neutral *** remarkable performance of our Fe_(7)S_(8)/C electrocatalyst opens up new possibilities for utilizing bioinspired materials as catalysts for the HER.

关键词： biomimetic electrocatalyst hydrogen production renewable energy

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Effect of organic mineral supplementation in reducing oxidative stress in Holstein calves during short‑term heat stress and recovery conditions

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Journal of Animal Science and Biotechnology 2024年第2期15卷 812-825页

作者： A-Rang Son Seon-Ho Kim Mahfuzul Islam Michelle Miguel Ye Pyae Naing sang-Suk Lee Ruminant Nutrition and Anaerobe Laboratory Department of Animal Science and TechnologySunchon National UniversitySuncheon 57922Korea Department of Microbiology and Parasitology Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh

Background This study investigated the effects of inorganic and organic minerals on physiological responses,oxidative stress reduction,and rumen microbiota in Holstein bull calves(123.81±9.76 kg;5 months old)during short-term heat stress(HS)and recovery *** Holstein calves were randomly assigned to four treatment groups:no mineral supplementation(Con),inorganic minerals(im),organic minerals(OM),and high-concentration organic minerals(HOM)and two thermal environments(HS and recovery)using 4×2 factorial arrangement in a crossover design of four periods of 35 *** were maintained in a temperature-controlled *** experimental period consisted of 14 d of HS,14 d of recovery condititon,and a 7-d washing *** Body temperature and respiration rate were higher in HS than in the recovery conditions(P0.05).The principal coordinate analysis represented that the overall rumen microbiota was not influenced by mineral supplementation;however,temperature-induced microbial structure shifts were indicated(PERMANOVA:P<0.05).At the phylum level,Firmicutes and Actinobacteria decreased,whereas Fibrobacteres,Spirochaetes,and Tenericutes increased(P<0.05),under HS *** genus Treponema increased under HS conditions,while Christensenella was higher in recovery conditions(P<0.05).Conc

关键词： Antioxidant status Heat stress Holstein bull calves Organic mineral supplementation Oxidative stress

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Spin-controlled generation of a complete polarization set with randomly-interleaved plasmonic metasurfaces

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Opto-Electronic Advances 2024年第8期7卷 16-24页

作者： Sören im Sande Yadong Deng Sergey I.Bozhevolnyi Fei Ding Centre for Nano Optics University of Southern DenmarkOdense 5230Denmark

Optical metasurfaces,comprising subwavelength quasi-planar nanostructures,constitute a universal platform for manipulating the amplitude,phase,and polarization of light,thus paving a way for the next generation of highly integrated multifunctional optical *** this work,we introduce a reflective metasurface for the generation of a complete(angularly resolved)polarization set by randomly interleaving anisotropic plasmonic meta-atoms acting as nanoscale wave *** the proof-of-concept demonstration,we achieve multidirectional beam-steering into different polarization channels forming a complete set of polarization states,which can also be dynamically altered by switching the spin of incident *** developed design concept represents a significant advancement in achieving flat polarization optics with advanced functionalities.

关键词： plasmonic metasurface randomly interleaved multidirectional beam-steering spin-controlled all-polarization generation

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A data-driven reduced-order model for stiff chemical kinetics using dynamics-informed training

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Energy and AI 2024年第1期15卷 181-192页

作者： Vijayamanikandan Vijayarangan Harshavardhana A.Uranakara Shivam Barwey Riccardo Malpica Galassi Mohammad Rafi Malik Mauro Valorani Venkat Raman Hong G.im CCRC King Abdullah University of Science and TechnologyThuwalSaudi Arabia Argonne Leadership Computing Facility Argonne National LaboratoryLemontIL 60439USA Mechanical and Aerospace Engineering Department Sapienza University of RomeVia Eudossiana18Rome 00184Italy Department of Aerospace Engineering University of MichiganAnn ArborMI 48109USA

A data-based reduced-order model(ROM)is developed to accelerate the time integration of stiff chemically reacting systems by effectively removing the stiffness arising from a wide spectrum of chemical time ***,the objective of this work is to develop a ROM that acts as a non-stiff surrogate model for the time evolution of the thermochemical state vector(temperature and species mass fractions)during an otherwise highly stiff and nonlinear ignition *** model follows an encode-forecast-decode strategy that combines a nonlinear autoencoder(AE)for dimensionality reduction(encode and decode steps)with a neural ordinary differential equation(NODE)for modeling the dynamical system in the AE-provided latent space(forecasting step).By means of detailed timescale analysis by leveraging the dynamical system Jacobians,this work shows how data-based projection operators provided by autoencoders can inherently construct the latent spaces by removing unnecessary fast timescales,even more effectively than physics-based counterparts based on an eigenvalue analysis.A key finding is that the most significant degree of stiffness reduction is achieved through an end-to-end training strategy,where both AE and neural ODE parameters are optimized simultaneously,allowing the discovered latent space to be *** addition to end-to-end training,this work highlights the vital contribution of AE nonlinearity in the stiffness reduction *** the prediction of homogeneous ignition phenomena for H2-air and C2H4-air mixtures,the proposed ROM achieves several ordersof-magnitude increase in the integration time step size when compared to(a)a baseline CVODE solver for the full-chemical system,(b)statistical technique–principal component analysis(PCA),and(c)computational singular perturbation(CSP),a vetted physics-based stiffness-reducing modeling framework.

关键词： Stiff system Chemical kinetics Reacting flows Autoencoders Neural ODE

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Recent trends in the epidemiology and clinical outcomes of inflammatory bowel disease in South Korea,2010-2018

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World Journal of Gastroenterology 2024年第9期30卷 1154-1163页

作者： Seulji Kim Hyun Jung Lee Seung Woo Lee sanghyun Park Seong-Joon Koh Jong Pil im Byeong Gwan Kim Kyung-Do Han Joo Sung Kim Department of Internal Medicine Korea Institute of Radiological and Medical SciencesSeoul 01812South Korea Department of Internal Medicine and Liver Research Institute Seoul National University College of MedicineSeoul 03080South Korea Department of Statistics and Actuarial Science Soongsil UniversitySeoul 06978South Korea

BACKGROUND Inflammatory bowel disease(IBD)was previously regarded as a Western disease;however,its incidence is increasing in the *** epidemiology of IBD in Asia differs significantly from the patterns in the *** To comprehensively investigate the epidemiology of IBD in South Korea,inclu-ding its incidence,prevalence,medication trends,and *** We analyzed claims data from the Health Insurance Review and Assessment Service and Rare and Intractable Diseases(RIDs),operated by the National Health Insurance Service of South *** with IBD were identified based on the International Classification of Diseases,Tenth Revision,and RID diagnostic codes for Crohn’s disease(CD)and ulcerative colitis(UC)from 2010 to *** In total,14498 and 31409 patients were newly diagnosed with CD and UC,respectively,between 2010 and *** annual average incidence of CD was 3.11 cases per 105 person-years,and that of UC was 6.74 cases per 10^(5) *** 2014,the incidence rate of CD has been stable,while that of UC has steadily increased,shifting the peak age group from 50-year-olds in 2010 to 20-year-olds in *** CD and UC prevalence increased consistently over the study period;the use of 5-aminosali-cylates and corticosteroids gradually decreased,while that of immunomodulators and biologics steadily increased in both CD and *** clinical outcomes of IBD,such as hospitalization and surgery,decreased during the study *** The CD incidence has been stable since 2014,but that of UC has increased with a shift to a younger age at peak incidence between 2010 and *** clinical outcomes improved over time,with increased use of immunomodu-lators and biologics.

关键词： Inflammatory bowel disease Crohn’s disease Ulcerative colitis Incidence Prevalence

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Clinical analysis of risk factors contributing to recurrence of pterygium after excision and graft surgery

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International Journal of Ophthalmology(English edition) 2015年第3期8卷 522-527页

作者： sang won Ha Joon Ho Park im Hee Shin Hong Kyun Kim Department of Ophthalmology Kyungpook National University School of Medicine Department of Medical Statistics Catholic University of Daegu School of medicine

Aim: To find the risk factors related to the reproliferation of the pterygial tissue after excision and graft ***: Charts of 130 eyes of 130 patients who had pterygial excision from March 2006 to April 2011 were reviewed. Preoperative pterygium morphology, surgical methods, and adjunctive treatments were statistically analyzed for their relationship with ***: During the follow-up period, recurrence was observed in 20 eyes(15.4%). None of the preoperative morphologic features were affected the rate of the recurrence. However, an age <40y [P =0.085, odds ratio(OR) 3.609, 95% confidence interval(CI) 0.838-15.540]and amniotic membrane graft instead of conjunctival autograft(P =0.002, OR 9.093, 95% CI 2.316-35.698) were statistically significant risk factors for *** analysis revealed that intraoperative mitomycin C(MMC)(P =0.072, OR 0.298, 95% CI 0.080-1.115)decreased the rate of recurrence. CONCLUSION: Younger age is a risk factor for reproliferation of pterygial tissue after excision and amniotic membrane transplantation(AMT) are less effective in preventing recurrence of pterygium after excision based on the comparison between conjunctival autograft and AMT. Intraoperative MMC application and conjunctival autograft reduce recurrence.

关键词： pterygium recurrence conjunctival autograft amniotic membrane graft mitomycin C

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电针预防化疗诱导的周围神经病变：随机对照试验

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中国针灸 2024年

作者：姚瑶张曦平葛任洁 im Hee Shin 姚昶南京中医药大学附属医院乳腺外科大邱天主教大学医学院医学统计学系

目的：探讨电针预防化疗诱导的周围神经病变（CIPN）的临床疗效。方法：将52例拟行紫杉烷辅助/新辅助化疗的乳腺癌患者随机分为电针组（26例，脱落3例）和常规护理组（26例，脱落1例）。常规护理组在标准化疗方案基础上予以常规护理；... 详细信息

目的：探讨电针预防化疗诱导的周围神经病变（CIPN）的临床疗效。方法：将52例拟行紫杉烷辅助/新辅助化疗的乳腺癌患者随机分为电针组（26例，脱落3例）和常规护理组（26例，脱落1例）。常规护理组在标准化疗方案基础上予以常规护理；电针组在常规护理组基础上加用电针干预，穴取印堂及双侧八邪（第二）、外关、合谷、曲池、足三里、阴陵泉、三阴交、太溪、太冲、悬钟、八风（第四），同侧太冲、三阴交连接电针，疏密波，频率2 Hz/10 Hz，每次30 min，自第1周期化疗前1 d开始，前2周每周2次，后每周1次，共治疗12周。比较两组患者试验第24周CIPN发生率，观察两组患者试验前及试验第12、24周欧洲癌症研究与治疗组织的化疗引起周围神经毒性生活质量问卷20（EORTC QLQ-CIPN20）得分、中医证候量表积分、欧洲癌症研究与治疗组织生命质量量表（EORTC QLQ-C30）得分，检测两组患者试验前及试验第12周感觉神经传导速度、运动神经传导速度。结果：试验第24周时，电针组CIPN总发生率为17.4%（4/23），低于常规护理组的72.0%（18/25，P＜0.001）；电针组高级别CIPN发生率为0%（0/23），低于常规护理组28.0%（7/25，P＜0.05）。试验第12、24周时，常规护理组EORTC QLQ-CIPN20感觉神经症状得分、总分较试验前升高（P＜0.001，P＜0.05，P＜0.01）；试验第24周时，电针组EORTC QLQ-CIPN20感觉神经症状得分低于常规护理组（P＜0.05）。试验第12周时，常规护理组患者感觉神经中右侧腓浅神经传导速度较试验前下降（P＜0.05）；电针组感觉神经中左侧正中神经、右侧腓浅神经传导速度高于常规护理组（P＜0.05，P＜0.01）。试验第12、24周时，电针组中医证候量表次症积分均较试验前下降（P＜0.05），常规护理组中医证候量表主症、次症积分及总积分均较试验前升高（P＜0.01，P＜0.001，P＜0.05）；试验第12周时，电针组主症、次症积分及总积分均低于常规护理组（P＜0.05，P＜0.01），试验第24周时，电针组患者次症、总积分低于常规护理组（P＜0.05）。试验第12周时，常规护理组EORTC QLQ-C30疲倦、疼痛、恶心呕吐得分均较试验前升高（P＜0.05，P＜0.01）；试验第24周时，电针组EORTC QLQ-C30总体健康状况得分较试验前升高（P＜0.001），恶心呕吐、食欲丧失得分较试验前降低（P＜0.01）。试验第12周时，电针组EORTC QLQ-C30总体健康状况得分高于常规护理组（P＜0.01），疼痛、恶心呕吐得分低于常规护理组（P＜0.01，P＜0.05）；试验第24周时，电针组EORTC QLQ-C30总体健康状况得分高于常规护理组（P＜0.001），食欲丧失得分低于常规护理组（P＜0.05）。结论：电针能降低CIPN的发生率及严重程度，改善神经传导速度，提高患者生活质量。

关键词：化疗诱导的周围神经病变乳腺癌电针随机对照试验

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Clean-DM1, a Korean Polyherbal Formula, improves High Fat Diet-Induced Diabetic Symptoms in Mice by Regulating IRS/PI3K/AKT and AMPK Expressionsin Pancreas and Liver Tissues

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Chinese Journal of Integrative Medicine 2024年第2期30卷 125-134页

作者： Piao Wang Yi Liu Seok Yong Kang Chenzi Lyu Xiang Han Tianjun Ho Kyung Jae Lee Xianglong Meng Yong-Ki Park Hyo won Jung Department of Herbology College of Korean MedicineDongguk UniversityGyeongju 38066Korea College of Pharmacy&Graduate School of Pharmaceutical Sciences Ewha Womans UniversitySeoul 03760Korea Korean Medicine R&D Center Dongguk UniversityGyeongju 38066Korea Shanxi Key Laboratory of Traditional Herbal Medicines Processing Shanxi University of Chinese MedicineJinzhong(030619)ShanxiProvinceChina

Objective:To investigate the effects of Clean-DM1(C-DM1),a polyherbal formulation of Radix Scrophulariae,Radix Astragali,Rhizoma Atractylodis,and Radix Salviae Miltiorrhizae,on high-fat diet(HFD)-induced diabetes ***:The information about active components of C-DM1 extract and molecular mechanism was obtained from network pharmacology *** compounds of C-DM1 extract by high performance liquid chromatography-mass spectrometry(HPLC-MS)analysis were conducted for quality *** in vivo study,mice were induced diabetes by HFD for 12 *** mice in the normal group(Nor)were maintained with a regular diet and treated with saline by *** HFD model mice were randomly divided into 3 groups,including a HFD diabetic model group,a C-DM1 extract-administered group(C-DM1,500 mg/kg),and metformin-administered groups(Met,500 mg/kg),8 mice in each *** intake,body weight(BW),and fasting blood glucose(FBG)levels were recorded weekly for 4 *** 4 weeks of treatment,alanine aminotransferase(ALT),aspartate aminotransferase(AST),blood glucose,low-density lipoprotein cholesterol(LDL-C)were determined using an automated clinical chemistry analyzer,and homeostatic model for assessing insulin resistance(HOMA-IR)levels and oral glucose tolerance test(OGTT)were *** histopathological changes of liver and pancreatic tissues were observed by hematoxylin-eosin *** receptor substrate(IRS)/phosphatidylinositol 3 kinase(PI3K)/protein kinase B(AKT)and adenosine 5'-monophosphate-activated protein kinase(AMPK)expressions in liver and pancreas tissues were detected by Western blot ***:HPLC-MS identified dihydroisotanshinone,dihydroisotanshinone I,cryptotanshinone,harpagoside,and atractyloside A in C-DM1 *** administration of C-DM1 extract significantly decreased body weight,calorie intake,and the levels of blood glucose and insulin in the diabetic mice(Pimproved the im

关键词： high-fat diet type 2 diabetes mellitus herbal formulation insulin receptor substrate/phosphatidylinositol 3 kinase/protein kinase B adenosine 5'-monophosphate-activated protein kinase network pharmacology high performance liquid chromatography-mass spectrometry analysis

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论都市农业在城乡一体化发展中的重要意义——以韩国都市农业为鉴

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农业现代化研究 2024年第1期45卷 10-19页

作者：邹毓莹全银华 AN Donghwan im Jeongbin 青岛农业大学外国语学院山东青岛266109 首尔大学农业生命科学院韩国首尔08826

都市农业的有效发展对于促进城乡经济、社会、文化等各类要素的相互渗透,提升城乡相互融合度,最终构建城乡一元的现代化结构有着重要意义。但由于我国都市农业实践时间相对较短且处于初级阶段,在制度、资金、技术等方面仍存在一定的短板... 详细信息

都市农业的有效发展对于促进城乡经济、社会、文化等各类要素的相互渗透,提升城乡相互融合度,最终构建城乡一元的现代化结构有着重要意义。但由于我国都市农业实践时间相对较短且处于初级阶段,在制度、资金、技术等方面仍存在一定的短板,因此有必要借鉴其他国家都市农业推动城乡融合发展的有效经验,驱动我国城乡融合。本文基于对韩国的实地调研,梳理了韩国都市农业的发展历程与现状,分析总结了韩国都市农业促进城乡一体化的过程及效果。结合我国当前都市农业发展的现状与问题,为构建中国特色的城乡一体化提供了有益的参考。研究发现,我国下一步应加快都市农业法律立法并强化规划与引导,扩大都市农业体验渠道与宣传力度,深化城乡一体理念。同时,通过构建都市农业管理师制度来缓解新生代农民工的压力,进一步拓展都市农业的多元功能以推动城乡深度融合。此外,还应完善都市农业人才培养体系,建立国内外技术合作机制。另外,需要正视韩国都市农业面临的问题,合理规划和充分利用城市未利用的空地,科学分配有限资源以实现供需的“动态平衡”。此外,应充分发挥我国气候资源优势,因地制宜推动都市农业的发展,同时也需要提前准备城市居民适应农村生活的相关工作。

关键词：都市农业新型城乡关系城乡一体化统筹发展韩国

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CORE:Common Region Extension Based Multiple Protein Structure Alignment for Producing Multiple Solution

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Journal of Computer Science & Technology 2013年第4期28卷 647-656页

作者： Woo-Cheol Kim sanghyun Park Jung-im won College of Information Sciences and Technology The Pennsylvania State University University Park Department of Computer Science Yonsei University Research Center of Information and Electronic Engineering Hallym University Chuncheon

Over the past several decades, biologists have conducted numerous studies examining both general and specific functions of proteins. Generally, if similarities in either the structure or sequence of amino acids exist for two proteins, then a common biological function is expected. Protein function is determined primarily based on the structure rather than the sequence of amino acids. The algorithm for protein structure alignment is an essential tool for the research. The quality of the algorithm depends on the quality of the similarity measure that is used, and the similarity measure is an objective function used to determine the best alignment because of their individual strength and weakness However, none of existing similarity measures became golden standard They require excessive filtering to find a single alignment. In this paper, we introduce a new strategy that finds not a single alignment, but multiple alignments with different lengths. This method has obvious benefits of high quality alignment. However, this novel method leads to a new problem that the running time for this method is considerably longer than that for methods that find only a single alignment. To address this problem~ we propose algorithms that can locate a common region （CORE） of multiple alignment candidates, and can then extend the CORE into multiple alignments. Because the CORE can be defined from a final alignment, we introduce CORE＊ that is similar to CORE and propose an algorithm to identify the CORE＊. By adopting CORE＊ and dynamic programming, our proposed method produces multiple alignments of various lengths with higher accuracy than previous methods. In the experiments, the alignments identified by our algorithm are longer than those obtained by TM-align by 17% and 15.48%, on average, when the comparison is conducted at the level of super-family and fold, respectively.

关键词： structure alignment similarity search protein structure

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