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Hybrid assembly of conducting nanofiber network for ultra-stretchable and highly sensitive conductive hydrogels

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Journal of Materials Science & Technology 2024年第2期169卷 1-10页

作者： Yalei wang Shulong Zeng Shaohong Shi Yuheng Jiang Zhiwei Du Bingzhen wang xiurong Li State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversitySichuan UniversityChengdu 610065China

Conductive hydrogels have attracted extensive attention owing to their promising application prospects in flexible and wearable ***,achieving both high sensitivity and mechanical robustness remains ***,a novel and versatile conductive hydrogel based on the hybrid assem-bly of conductive cellulose nanofiber(CNF)networks has been designed and *** by the templating effect of CNFs and stabilizing effect of negatively charged poly(styrene sulfonate)(PSS),conducting polymer poly(3,4-ethylenedioxythiophene)(PEDOT)was self-organized into three-dimensional nanostructures which constructed a robust conductive network after in-situ oxidative *** unique structure derived from CNF bio-template endowed polyacrylamide(PAM)hydrogels with improved electrical conductivity and excellent mechanical *** a result,the as-fabricated CNF/PEDOT:PSS/PAM hydrogel exhibited an ultimate tensile strain of 1881%and toughness of 3.72 MJ/m^(3),which were 4.07 and 8.27 times higher than the CNF-free hydrogel,*** significantly,the resultant hydrogel sensor showed highly desirable sensing properties,including remarkable sensing range(1100%),high gauge factor(GF=5.16),fast response time(185 ms),and commendable durability,as well as good ***,the hydrogel sensor was able to distinguish subtle physiological activities including phonation and facial expression,and monitor large human body motions such as finger flexion and elbow ***,it was feasible to integrate the strain sensor on the joints of robots to recognize complicated machine motion signals,showing potential in advanced human-machine interactions.

关键词： Strain sensor Cellulose nanofibers PEDOT:PSS Conductive hydrogel Templating method

磷和钾对大灰藓植株生长生理和营养元素的影响

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热带亚热带植物学报 2024年第2期32卷 198-208页

作者：杨铄渊王秀荣陈洪梅史秉洋申俊杰黄补芳谢美璇贵州大学林学院贵阳550025

大灰藓(Hypnum plumaeforme)具有良好的景观效果和应用前景,但生长缓慢且缺少系统的栽培技术研究,对其推广应用有一定影响。该研究分别将磷肥(P)、钾肥(K)、PK复合肥作为一次性基肥使用,研究不同施肥处理下大灰藓的生长生理和营养元素... 详细信息

大灰藓(Hypnum plumaeforme)具有良好的景观效果和应用前景,但生长缓慢且缺少系统的栽培技术研究,对其推广应用有一定影响。该研究分别将磷肥(P)、钾肥(K)、PK复合肥作为一次性基肥使用,研究不同施肥处理下大灰藓的生长生理和营养元素的变化,并用模糊隶属函数法选出最佳施肥处理。结果表明,施肥能显著增加大灰藓的覆盖度,K_(18)处理的植株覆盖度较对照(CK)提高了53.9%。施肥能显著增加植株类胡萝卜素、叶绿素(除K_(12))、可溶性蛋白(P_(24)、PK_(12)、PK_(30)除外)含量,降低植株可溶性糖含量(除P_(24)、PK_(6)),P_(18)处理的植株类胡萝卜素和叶绿素含量最高,分别为CK的3.42和2倍。P肥显著增加了植株P含量,以P18的影响最大,为CK的1.33倍;K肥对植株K含量积累的促进作用最好,K18处理的植株K含量最高(为CK的1.62倍)。模糊综合评价表明K_(18)、P_(18)处理分别对提高植株覆盖度、绿度的维持作用最好。因此,以P_(18)处理对增强大灰藓长势及植株呈色的促进作用最好。

关键词：大灰藓施肥生长生理营养元素模糊隶属函数

Atomic-level coupled RuO_(2)/BaRuO_(3) heterostructure for efficient alkaline hydrogen evolution reaction

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Journal of Energy Chemistry 2024年第1期88卷 356-362,I0009页

作者： Yueying Yan Tian Meng Yuting Chen Yang Yang Dewen wang Zhicai Xing xiurong Yang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026AnhuiChina

The slow water dissociation is the rate-determining step that slows down the reaction rate in alkaline hydrogen evolution reaction(HER).Optimizing the surface electronic structure of the catalyst to lower the energy barrier of water dissociation and regulating the binding strength of adsorption intermediates are crucial strategy for boosting the catalytic performance of *** this study,RuO_(2)/BaRuO_(3)(RBRO)heterostructures with abundant oxygen vacancies and lattice distortion were in-situ constructed under a low temperature via the thermal decomposition of *** RBRO heterostructures obtained at 550℃ exhibited the highest HER activity in 1 M KOH,showing an ultra-low overpotential of 16 mV at 10 mA cm^(-2)and a Tafel slope of 33.37 m V dec^(-1).Additionally,the material demonstrated remarkable durability,with only 25 mV of degradation in overpotential after 200 h of stability testing at 10 mA cm^(-2).Density functional theory calculations revealed that the redistribution of charges at the heterojunction interface can optimize the binding energies of H*and OH*and effectively lower the energy barrier of water *** research offers novel perspectives on surpassing the water dissociation threshold of alkaline HER catalysts by means of a systematic design of heterogeneous interfaces.

关键词： Heterostructure Hydrogen evolution reaction Interfacial electron transfer Oxygen vacancies

STUDY ON THE MENSTRUOUS STATES AND BONE MINERAL STATES IN ELITE RHYTHMIC GYMNASTIC ATHLETES

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北京体育大学学报 1996年第S2期19卷 32-37页

作者： JIAO Wei ZHANG Yimin wang xiurong XIA Yanfei(Beijing University of Physical Education)

All of the 20 subjects aged 15-19 years were national elite rhythme gymnastic athletes. They had been trained for 4-10 years, and 13 athletes had sports grade of master sportsman (one of them has not had menes aged 16 years). Their menstruous states were investigated and bone mineral states were determined. The results, indicated that elite rhythmic gymnastic athletes were in a serious condition of menstrual dysfunction. Sixteen athletes were in abnormal minstruation among nineteen athletes, the average was 84. 2%. The mean BMD of these athletes decreased, compared will ordinary people. That was to say the results did not reveal the advantage of sports on bone growth and develpment in atbletes of menstrual disorder which might relate to menstrual dysfuncton. Further analysis made it clear that BMC and BMD of athletes in indefinited menstruation, amenorrhea and menorrhalgia, were significantly lower compared will athletes in eumenorrhea. The results might be taken as a warning to elite athletes of their bad health condition. It is necessary to make further study on exertional menstruous disorder, because part of the female athletes are in abnormal menstruation.

关键词： Rhythmic Gymnastic Menstrual Disorder Bone Mineral Content Bone Mineral Density

光纤光栅自动化监测技术在佛山城市地质调查中的应用

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中国煤炭地质 2024年第8期36卷 72-77页

作者：侯言凯李世念马俊强王秀荣赵晓京中国煤炭地质总局勘查研究总院北京100039 矿山透明地质与数字孪生技术国家矿山安监局重点实验室北京100039 中国煤炭地质总局广东煤炭地质局勘查院广东广州510440

介绍光纤光栅自动化监测技术的原理以及在佛山城市地质调查项目中的应用。针对城市建设可能引发的地质环境变化,在地质资源环境承载力较弱区域与城市轨道交通重要基础设施的重叠区域搭建光纤光栅自动化监测站点。通过实时监测地层水压... 详细信息

介绍光纤光栅自动化监测技术的原理以及在佛山城市地质调查项目中的应用。针对城市建设可能引发的地质环境变化,在地质资源环境承载力较弱区域与城市轨道交通重要基础设施的重叠区域搭建光纤光栅自动化监测站点。通过实时监测地层水压力和土压力变化,为城市地质安全提供技术支撑,为城市地下空间安全运营提供数据参考和决策支持。

关键词：光纤光栅传感监测城市地质

Targeted screening of an anti-inflammatory polypeptide from Rhopilema esculentum Kishinouye cnidoblasts and elucidation of its mechanism in alleviating ulcerative colitis based on an analysis of the gut microbiota and metabolites

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Food Science and Human Wellness 2024年第3期13卷 1336-1347页

作者： Ziyan wang Qiuyue Shi Ying Feng Jiaojiao Han Chenyang Lu Jun Zhou Zhonghua wang xiurong Su State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Ningbo UniversityNingbo 315000China School of Marine Science Ningbo UniversityNingbo 315000China Key Laboratory of Aquaculture Biotechnology(Ningbo University) Ministry of EducationNingbo UniversityNingbo 315000China College of Life Sciences Tonghua Normal UniversityTonghua 134000China Shandong Beiyou Biotechnology Co. Ltd.Weifang 261000China

Ulcerative colitis(UC)is a recurrent inflammatory bowel disease that imposes a severe burden on families and *** recent years,exploiting the potential of marine bioactive peptides for the treatment of diseases has become a topic of intense research *** study revealed the mechanism underlying the protective effect of the dominant polypeptide PKKVV(Pro-Lys-Lys-Val-Val)of Rhopilema esculentum cnidoblasts against DSS-induced UC through a combined analysis of the metagenome and serum ***,the polypeptide composition of *** cnidoblasts was determined by matrix-assisted laser desorption ionization time-of-flight mass spectrometry(MALDI-TOF/TOF-MS).Molecular docking showed that the dominant peptide PKKVV could bind better with tumor necrosis factor-α(TNF-α)than the original *** animal experiments suggested that PKKVV could modulate disorganized gut microorganisms in mice with UC;affect serum metabolites through the arachidonic acid,glycerophospholipid and linoleic acid metabolism pathways;and further alleviate UC *** study provides a reference for the comprehensive development of marine bioactive substances and nonpharmaceutical treatments for UC.

关键词： Ulcerative colitis Rhopilema esculentum Kishinouye Cnidoblasts Marine bioactive polypeptides Metagenome Serum metabolome

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甜仁杏优株果实性状调查与分析

中国果树 2024年第1期 30-35页

作者：吕丽霞王秀荣王维王毅敏贾庆冰宋嘉太金颖璐刘晓婕闫文静张家口市农业科学院河北075000 宣化科技职业学院张家口市农业环境与农产品质量管理站

对38个甜仁杏优株的单果重、单核重、出核率、单仁重、核壳厚度、出仁率、核长度、核宽度、核形指数、单株果核产量10个性状进行聚类分析、相关性分析和主成分分析。结果表明:当欧氏距离为8时,38个甜仁杏优株分为5类,其中第Ⅰ类为大果类... 详细信息

对38个甜仁杏优株的单果重、单核重、出核率、单仁重、核壳厚度、出仁率、核长度、核宽度、核形指数、单株果核产量10个性状进行聚类分析、相关性分析和主成分分析。结果表明:当欧氏距离为8时,38个甜仁杏优株分为5类,其中第Ⅰ类为大果类型,但出核率和核形指数的平均值最低;第Ⅱ类单果重、单核重的平均值较大,但出核率和出仁率平均值较小,单株果核产量平均值较低;第Ⅲ类各项指标平均值较为居中,但出仁率平均值最低;第Ⅳ类各项指标平均值较为居中,且出仁率相对较高;第Ⅴ类出核率、出仁率、核形指数均最大,但其他各项指标均最小。单核重、单仁重均与核壳厚度、核长度、核宽度呈极显著正相关;出核率与单果重呈极显著负相关;出仁率与核壳厚度呈极显著负相关,与单核重呈显著负相关;单株果核产量与核长度、核宽度呈极显著正相关。主成分分析中,前4个主成分的累计方差贡献率达到83.949%,在得分排名前10名的优株中,果仁味道同时被评为优级的分别为13-32(一)、09-10(四)、16-46(一)、10-46(一)、10-03(二)、01-04(一),综合出仁率和果肉厚度考虑13-32(一)、09-10(四)、16-46(一)、10-46(一)将作为新品种选育的重点备选优株,进入新品种选育的下一个环节。

关键词：甜仁杏果实性状聚类分析主成分分析

Vacancy engineering induced reaction kinetics enhancement of cobalt metaphosphate for pH-universal hydrogen evolution

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Nano Research 2024年第5期17卷 3879-3887页

作者： Yuting Chen Tian Meng Zhicai Xing Yueying Yan Yang Yang Bohan Yao Dewen wang xiurong Yang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Developing efficient pH-universal hydrogen evolution reaction(HER)catalysts is critical in the field of water electrolysis,however,which is severely hampered by the sluggish kinetics in alkaline ***,a ruthenium(Ru)incorporation induced vacancy engineering strategy is firstly proposed to precisely construct oxygen vacancy(V_(O))-riched cobalt-ruthenium metaphosphate(CRPO)for high-efficiency pH-universal *** V_(O) modifies the electronic structure,improves the superficial hydrophilic and gas spillover capacity,it also reduces the coordination number of Ru atoms and regulates the coordination *** calculations indicate that Ru tends to adsorb H_(2)O and H^(*),whereas V_(O) tends to adsorb OH^(-),which greatly promotes the H_(2)O adsorption and the dissociation of HO-H ***,CRPO-2 exhibits remarkable HER performance,the mass activity is about 18.34,21.73,and 38.07 times higher than that of Pt/C in acidic,neutral,and alkaline media,respectively,at the same time maintain excellent *** findings may pave a new avenue for the rational design of electrocatalysts toward pH-universal water electrolysis.

关键词： cobalt metaphosphate pH-universal hydrogen evolution reaction(HER) vacancy engineering low-coordination atoms oxygen vacancy

Food-derived bio-functional peptides for the management of hyperuricemia and associated mechanism

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Food Science and Human Wellness 2024年第4期13卷 1767-1786页

作者： Yanxin wang Mingxia Ma Yumeng Huang Siqing Fan Jie Peng Shiming Li xiurong Su Yanbo wang Chenyang Lu State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products and School of Marine Science Ningbo UniversityNingbo 315211China School of Food and Health Beijing Technology and Business UniversityBeijing 100048China Department of Food Science Rutgers UniversityNew BrunswickNJ 08901USA College of Life Sciences Huanggang Normal UniversityHuanggang 438000China Food Safety Key Laboratory of Zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China

Hyperuricemia,a metabolic disorder related to uric acid metabolism dysregulation,has become a common metabolic disease worldwide,due to changes in lifestyle and dietary *** recent years,owing to their high activity and few adverse effects,food-derived active peptides used as functional foods against hyperuricemia have attracted increasing *** article aims to focus on the challenge associated with peptide-specific preparation methods development,functional components identification,action mechanism(s)clarification,and bioavailability *** current review proposed recent advances in producing the food-derived peptides with high anti-hyperuricemia activity by protein source screening and matched enzymatic hydrolysis condition adjusting,increased the knowledge about strategies to search antihyperuricemia peptides with definite structure,and emphasized the necessity of combining computer-aided approaches and activity *** addition,novel action mechanism mediated by gut microbiota was discussed,providing different insights from classical ***,considering that little attention was paid previously on the structure-activity relationships of anti-hyperuricemia peptides,we collected the sequences from published studies and make a preliminary summary about the structure-activity relationships,which in turn provided guides for enzymatic hydrolysis optimization and bioavailability ***,this article could promote the development,application and commercialization of food-derived anti-hyperuricemia peptides in the future.

关键词： Hyperuricemia Peptide Enzyme hydrolysis Mechanism Structure-activity relationship Bioavailability