检索结果-南通市图书馆

BRICS to BRICSCESS——A perspective for practical action in the promotion of healthy lifestyles to improve public health in five countries

在线全文

学校读者我要写书评

暂无评论

journal of Sport and Health Science 2019年第6期8卷 520-523页

作者： Ming-Kai Chin Elizabeth Anderson j.hans de Ridder R.icardo RUvinha j.Larry Durstine BRICS Council of Exercise and Sport Science(BRICSCESS) Hong KongChina Department of Exercise Science University of South CarolinaColumbiaSC 29208USA School of Human Movement Sciences North-West University Potchefstroom CampusPotchefstroom 2520South Africa School of Arts Sciences and HumanitiesGraduate Program in Physical Activity SciencesUniversity of Sao PauloSao Paulo 03828-000Brazil

In 2006,during a United Nations General Assembly session in New York City,Russia presented a concept for developing multilateral international ***,foreign ministers from other countries unanimously expressed interest ... 详细信息

关键词： promotion union initially

Tribology of enzymatically degraded cartilage mimicking early osteoarthritis

在线全文

学校读者我要写书评

暂无评论

Friction 2023年第9期11卷 1724-1740页

作者： Ke REN Miguel Alejandro REINA MAHECHA Maike HÜBNER Zhiwei CUI hans j.KAPER Hugo C.VAN DER VEEN Prashant K.SHARMA Department of Biomedical Engineering University Medical Centre GroningenUniversity of GroningenGroningen 9713AVthe Netherlands Department of Mechanical Engineering Eindhoven University of TechnologyEindhoven 5600MBthe Netherlands Department of Orthopedic Surgery University Medical Centre GroningenUniversity of GroningenGroningen 9700RBthe Netherlands

Healthy cartilage is a water-filled super lubricious *** type II provides it structural stability,and proteoglycans absorb water to keep the cartilage in a swollen condition,providing it the ability to creep and provide weeping ***(OA)is a degenerative and debilitating disorder of diarthrodial joints,where articular cartilage damage originates from enzymatic degradation and mechanical damage(wear).The objective of this research is to observe the level of cartilage damage present in knee arthroplasty patients and to understand the friction and creep behavior of enzymatically degraded bovine cartilage in ***(Lat)and medial(Med)condylar cartilages from OA patients undergoing total knee arthroplasty showed signs of enzymatic degradation and mechanical *** cartilages were exposed to collagenase III and chondroitinase ABC to degrade collagen and proteoglycans,*** loss of proteoglycans or collagen network and morphological changes were observed through histology and the atomic force microscope(AFM),respectively.A significant effect on creep due to enzymatic treatment was not *** the enzymatic treatment was found to significantly decrease the coefficient of friction(COF)at 4 N,while higher COF was shown from chondroitinase ABC degraded cartilage at 40 *** III treatment leads to the release of intact proteoglycans at the sliding interface,while chondroitinase ABC treatment leads to the loss of chondroitin sulfate(CS)from the *** ABC-digested bovine cartilage mimicked patient samples the best because of the similar distributions of proteoglycans,collagen network,and friction behavior.

关键词： lubrication cartilage boundary lubrication osteoarthritis(OA)

Climate warming shifts the time interval between flowering and leaf unfolding depending on the warming period

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2022年第11期65卷 2316-2324页

作者： Shuxin Wang Zhaofei Wu Yufeng Gong Shubiao Wang Wei Zhang Shanshan Zhang hans j.De Boeck Yongshuo H.Fu College of Water Sciences Beijing Normal UniversityBeijing 100085China Beijing Zoo Beijing 100044China Plants and Ecosystems Department of BiologyUniversity of AntwerpAntwerpAntwerpen 2000Belgium

The timing of flowering(FL)and leaf unfolding(LU)determine plants’reproduction and vegetative *** warming has substantially advanced FL and LU of temperate and boreal plants,but their responses to warming differ,which may influence the time interval between FL and LU(ΔLU-FL),thereby impacting plant fitness and intraspecific physiological *** on twigs collected from two flowering-first tree species,Populus tomentosa and Amygdalus triloba,we conducted a manipulative experiment to investigate the effects of winter chilling,spring warming and photoperiod on theΔ*** found that photoperiod did not affect theΔLU-FL of Amygdalus triloba,but shortenedΔLU-FL by 5.1 d of Populus ***,spring warming and winter chilling oppositely affected theΔLU-FL of both ***,low chilling accumulation extended theΔLU-FL by 3.8 and 9.4 d for Populus tomentosa and Amygdalus triloba,but spring warming shortened theΔLU-FL by 4.1 and 0.2 d℃^(-1).Our results indicate that climate warming will decrease or increase theΔLU-FL depending on the warming periods,i.e.,spring or *** shifted time interval between flowering and leaf unfolding may have ecological effects including affecting pollen transfer efficiency and alter the structure and functioning of terrestrial ecosystem.

关键词： chilling flowering leaf unfolding photoperiod spring phenology time interval warming period

In the beginning,there was only bare regolith-then some plants arrived and changed the regolith

在线全文

学校读者我要写书评

暂无评论

journal of Plant Ecology 2020年第5期13卷 511-516页

作者： jun Zhou Alejandra Zúñiga-Feest hans Lambers Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Laboratorio de Biología Vegetal Instituto de Ciencias Ambientales y EvolutivasFacultad de CienciasUniversidad Austral de ChileValdiviaChile School of Biological Sciences The University of Western Australia35 Stirling HighwayCrawley(Perth)WA 6009Australia College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationChina Agricultural University100193 BeijingChina

Pedogenesis along chronosequences has received attention from soil scientists for decades,following the pioneering work of Walker and Syers(1976),who showed a general pattern of the availability of nitrogen(N)and phosphorus(P)subsequently confirmed for a range of chronosequences(Huggett 1998;Turner and Condron 2013;Vitousek and Farrington 1997).Much more recently,changes of plant nutrient-acquisition strategies with soil development have drawn attention,first with a conceptual model(Lambers et al.2008),which was subsequently confirmed with solid experimental data collected along the jurien Bay chronosequence in south-western Australia(Zemunik et al.2015).The original conceptual model has since been amended,to explain why presumably less-effective mycorrhizal P-acquisition strategies coexist with more-effective strategies based on the release carboxylates(organic anions)(Lambers et al.2018).Mycorrhizas may not be effective at acquiring P from severely P-impoverished soils,but they do boost the defence against pathogens,which strongly affect the growth of non-mycorrhizal carboxylate-releasing Proteaceae(Albornoz et al.2017;Lalibertéet al.2015).What has received little or no attention is the P-acquisition strategies of species that are the first to colonize the bare regolith of the earliest stage of chronosequences(Figs 1 and 2).When the soil P availability is relatively high such as along the jurien Bay chronosequence(Turner et al.2018),there is little point searching for specialized strategies,but along many chronosequences,*** the case(Egli et al.2012;Richardson et al.2004;Zhou et al.2019).

关键词： soil fir Richardson

The BRICS Council for Exercise and Sport Science(BRICSCESS)--A new era has dawned

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

journal of Sport and Health Science 2018年第4期7卷 425-428页

作者： Ricardo R.Uvinha Nara R.C.de Oliveira j.hans de Ridder Ming-Kai Chin j.Larry Durstine School of Arts Sciences and HumanitiesGraduate Program in Physical Activity SciencesUniversity ofSao PauloSao Paulo 03828-000Brazil Department of Human Movement Sciences Federal University of Sao PauloSantos 11015-020Brazil Physical Activity Sport and Recreation（PhASRec）Focus AreaNorth-West University Potchefstroom CampusPotchefstroom 2520South Africa The Foundation for Global Community Health（GCH） Las VegasNV 89012USA Department of Exercise Science University of South CarolinaColumbiaSC 29208USA Corresponding author.E-mail address：ldurstin@mailbox.sc.edu

BRICS is the acronym for an international association of 5 major emerging national economies： Brazil, Russia, India, China, and South *** to the World Economic Forum, the BRICS economies are the most competitive among all cotmtries and are distinguished by their significant regional and global influence. The health and wellness of the people within these countries is a primary agenda item of these governments for connecting their fast economic growth and the need to provide a better quality of life. As of 2015, BRICS countries represent 〉3.6 billion people or one-half of the world population. All 5 countries are members of the top 25 countries of the world by population and 4 of these cotmtries make the top 10 on this list.

关键词：国民经济世界经济世界人口国际协会缩略词地区性竞争力影响区

Biologic Waste： Consistent Performance with an Alternating Field

在线全文

学校读者我要写书评

暂无评论

journal of Environmental Science and Engineering(B) 2017年第12期6卷 589-592页

作者： hans-jürgen Huber Industry Sales Development Chemicals Siemens AG Karlsruhe 76187 Germany

Biomass plants often struggle to capture flow measurements reliably. High amounts of dry solids and fats complicate the measurement with an MID （Magnetic-Inductive） flowmeter and make it susceptible to faults. To overcome this impediment, the waste water treatment plant in Innsbruck, Austria, relies on electromagnetic pulsed AC （Alternating Current） flowmeters. Compared to pulsed DC （Direct Current） devices, AC devices are able to build up magnetic fields that are ten times stronger. Equipped with this capability, the Sitrans Transmag 2 is able to guarantee a constant and also high measuring accuracy, zero point stability and signal strength regardless of impurities in the medium or fluctuations in the magnetic field.

关键词： Biomass wastewater treatment process instrumentation flow measurement pulsed AC meter pulsed DC meter Transmag 2.

Electromagnetic Fields and Calcium Signaling by the Voltage Dependent Anion Channel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open journal of Veterinary Medicine 2021年第1期11卷 57-86页

作者： Volker Ullrich hans-jürgen Apell Department of Biology University of Konstanz Konstanz Germany

Electromagnetic fields (EMFs) can interact with biological tissues exerting positive as well as negative effects on cell viability, but the underlying sensing and signaling mechanisms are largely unknown. So far in excitable cells EMF exposure was postulated to cause Ca2+ influx through voltage-dependent Ca channels (VDCC) leading to cell activation and an antioxidant response. Upon further activation oxidative stress causing DNA damage or cell death may follow. Here we report collected evidence from literature that voltage dependent anion channels (VDAC) located not only in the outer microsomal membrane but also in the cytoplasmic membrane convert to Ca2+ conducting channels of varying capacities upon subtle changes of the applied EMF even in non-excitable cells like erythrocytes. Thus, VDAC can be targeted by external EMF in both types of membranes to release Ca2+ into the cytosol. The role of frequency, pulse modulation or polarization remains to be investigated in suitable cellular models. VDACs are associated with several other proteins, among which the 18 kDa translocator (TSPO) is of specific interest since it was characterized as the central benzodiazepine receptor in neurons. Exhibiting structural similarities with magnetoreceptors we propose that TSPO could sense the magnetic component of the EMF and thus together with VDAC could trigger physiological as well as pathological cellular responses. Pulsed EMFs in the frequency range of the brain-wave communication network may explain psychic disturbances of electromagnetic hypersensitive persons. An important support is

关键词： Ca Signaling VDAC Benzodiazepine Receptor Mechanistic Concept Pulsed EMFs Electromagnetic Hypersensitivity TSPO Erythrocytes NADH-Oxidase Apoptosis Magnetosensor Membrane Potential Oxidative Stress Brain Signaling Autism

吸附柱出口温度随时间的变化规律及其数值模拟

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

离子交换与吸附 2005年第1期21卷 17-26页

作者：李立清,唐新村,hans-jürgen Rhm 湖南大学环境科学与工程系中南大学化学化工学院 Department of Mechanical Engineering University Bochum Bochum44780 Germany 长沙410082 长沙4100823

在不同温度 (15℃、20℃、25℃) 下,测试了活性炭 C40/4 吸附有机气体丙酮的吸附热引起吸附柱出口温度的变化。理论分析了吸附过程的能量守恒模型,在其他物质守恒,动量守恒和吸附平衡数学模型的基础上,采取有限差分方法,并借助计算软件 ... 详细信息

在不同温度 (15℃、20℃、25℃) 下,测试了活性炭 C40/4 吸附有机气体丙酮的吸附热引起吸附柱出口温度的变化。理论分析了吸附过程的能量守恒模型,在其他物质守恒,动量守恒和吸附平衡数学模型的基础上,采取有限差分方法,并借助计算软件 ATHENA VIUALWORKBENCH 对模型进行了数值解。探讨了物质轴向扩散系数,吸附热对吸附柱出口温度随时间变化规律的影响,发现吸附质轴向扩散系数是一个很小的数,可忽略不计,从而简化了模型。数值计算结果与实验结果能很好地相吻合。为获得吸附过程中有效传热系数提供了有效的解决方法,并为吸附过程的设计、预测和优化提供支持。

关键词：活性炭丙酮吸附数值模拟吸附热

Remarkable catalysis of spinel ferrite XFe2O4(X=Ni,Co,Mn,Cu,Zn)nanoparticles on the dehydrogenation properties of LiAlH_(4):An experimental and theoretical 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 Materials Science & Technology 2022年第16期111卷 189-203页

作者： Sheng Wei jiaxi Liu Yongpeng Xia Huanzhi Zhang Riguang Cheng Lixian Sun Fen Xu Pengru Huang Federico Rosei Aleskey A.Pimerzin hans jüergen Seifert Hongge Pan School of Material Science&Engineering Guangxi Key Laboratory of Information Materials and Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsGuilin University of Electronic TechnologyGuilin 541004China School of Mechanical&Electrical Engineering Guilin University of Electronic TechnologyGuilin 541004China CentreÉnergie Matériaux et TélécommunicationsInstitut National de la Recherche Scientifique1650 Boul.Lionel BouletVarennesJ3×1S2QuébecCanada Samara State Technical University Samara443100Russia Institute for Applied Materials Karlsruhe Institute of TechnologyHermann von Helmholtz Platz 176344 Eggenstein LeopoldshafenGermany School of New Energy Science and Technology Xi’an Technological UniversityXi’an 710021China

Safe,compact,lightweight and cost-effective hydrogen storage is one of the main challenges that need to be addressed to effectively deploy the hydrogen ***_(4),as a solid-state hydrogen storage material,presents several advantages such as high hydrogen storage capacity,low price and abundant ***,neither thermodynamic nor kinetic properties of dehydrogenation for LiAlH_(4)can fulfill the requirements of practical ***,a series of spinel ferrite nanoparticles such as XFe_(2)O_(4)(X=Ni,Co,Mn,Cu,Zn,Fe)were prepared by using the modified thermal decomposition method,and then doped into LiAlH_(4)by using ball *** results show that LiAlH_(4)doped with 7 wt%NiFe_(2)O_(4)starts to release hydrogen at 69.1°C,and the total amount of hydrogen released is 7.29 wt%before 300°*** activation energies of the two-step hydrogen release reactions of LiAlH_(4)doped with 7 wt%NiFe_(2)O_(4)are 42.32 kj mol^(-1)and 71.42 k j mol,which are 59.0%and 63.6%lower than those of as-received LiAlH_(4),*** the density functional theory(DFT)calculations,we reveal that both the presence of Ni FeOand in-situ formed AlNiin ball-milling decrease the desorption energy barrier of Al-H bonding in LiAlH_(4)and accelerate the breakdown of Al-H bonding through the interfacial charge transfer and the dehybridization of the Al-H ***,the experimental and theoretical results open a new avenue toward designing high effective catalysts applied to LiAlH_(4)as a candidate for hydrogen storage.

关键词： Hydrogen storage Lithium aluminum Spinel ferrite nanoparticles