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Exploring the relevance between load-bearing capacity and surface friction behavior based on a layered hydrogel cartilage prototype

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Friction 2024年第8期12卷 1757-1770页

作者： Yunlei ZHANG Weiyi ZHAO Xiaoduo ZHAO Jinshuai ZHANG Bo YU Shuanhong MA Feng ZHOU State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China shandong Laboratory of Yantai Advanced Materials and Green Manufacture Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai 264006China

Cartilage is well lubricated over a lifetime and this phenomenon is attributed to both of the surface hydration lubrication and the matrix load-bearing *** hydrogels with a layered structure are designed to mimic cartilage as potential *** many studies have concentrated on improving surface hydration to reduce friction,few have experimentally detected the relationship between load-bearing capacity of hydrogels and their interface friction *** this work,a bilayer hydrogel,serving as a cartilage prototype consisted of a top thick hydrated polymer brush layer and a bottom hydrogel matrix with tunable modulus was designed to investigate this *** coefficient of friction(COF,μ)is defined as the sum of interfacial component(μInt)and deformation/hysteresis component(μHyst).The presence of the top hydration layer effectively dissipates contact stress and reduces the interface interaction(μInt),leading to a stable and low *** contribution of mechanical deformation(μHyst)during the sliding shearing process to COF can be significantly reduced by increasing the local mechanical modulus,thereby enhancing the load-bearing *** results show that the strategy of coupling surface hydration layer with a high load-bearing matrix can indeed enhance the lubrication performance of hydrogel cartilage prototypes,and implies a promising routine for designing robust soft matter lubrication system and friction-control devices.

关键词： soft contact hydration,deformation load-bearing friction control

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Critical Opalescence and Its Impact on the Jet Quenching Parameter ■

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Chinese Physics Letters 2024年第3期41卷 28-34页

作者：武警曹杉杉李峰 School of Physical Science and Technology Lanzhou University institute of Frontier and Interdisciplinary Science Shandong University research Center for Hadron and CSR Physics Lanzhou University and Institute of Modern Physics of CAS Lanzhou Center for Theoretical Physics Key Laboratory of Theoretical Physics of Gansu Provinceand Frontiers Science Center for Rare Isotopes Lanzhou University Frontiers Science Center for Rare Isotopes Lanzhou University

Jet quenching parameter ■ is essential for characterizing the interaction strength between jet partons and nuclear matter. Based on the quark-meson model, we develop a new framework for calculating ■ at finite chemi...

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Multi-omics analysis reveals the pivotal role of phytohormone homeostasis in regulating maize grain water content

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The Crop Journal 2024年第4期12卷 1081-1092页

作者： Yuanliang Liu Manman Li Jianju Liu Suining Deng Yan Zhang Yuanfeng Xia Baoshen Liu Mingliang Xu State Key Laboratory of Plant Environmental Resilience/College of Agronomy and Biotechnology/National Maize Improvement Center/Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBeijing 100193China College of Agronomy/State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’an 271018ShandongChina institute of Agricultural Biotechnology Jilin Academy of Agricultural SciencesGongzhuling 136100JilinChina Maize research institute Jilin Academy of Agricultural SciencesGongzhuling 136100JilinChina

Grain water content(GWC)is a key determinant for mechanical harvesting of maize(Zea mays).In our previous research,we identified a quantitative trait locus,qGWC1,associated with GWC in ***,we examined near-isogenic lines(NILs)NILL and NILH that differed at the qGWC1 *** GWC in NILL was primarily attributed to reduced grain water weight(GWW)and smaller fresh grain size,rather than the accumulation of dry *** difference in GWC between the NILs became more pronounced approximately 35 d after pollination(DAP),arising from a faster dehydration rate in *** an integrated analysis of the transcriptome,proteome,and metabolome,coupled with an examination of hormones and their derivatives,we detected a marked decrease in JA,along with an increase in cytokinin,storage forms of IAA(IAA-Glu,IAA-ASP),and IAA precursor IPA in immature NILL *** kernel development,genes associated with sucrose synthases,starch biosynthesis,and zein production in NILL,exhibited an initial up-regulation followed by a gradual down-regulation,compared to those in *** discovery highlights the crucial role of phytohormone homeostasis and genes related to kernel development in balancing GWC and dry matter accumulation in maize kernels.

关键词： Grain water content Maize kernel Phytohormone homeostasis

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Evolutionary Diversity of Coxsackievirus A6 Causing Severe Hand,Foot,and Mouth Disease—China,2012-2023

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China CDC weekly 2024年第20期6卷 442-449页

作者： Huanhuan Lu Jinbo Xiao Wenhui Wang Dongmei Yan Tianjiao Ji Qian Yang Haiyan Wei Yanhua Du Yunting Zeng Jun Guo Jianhua Chen Hanri Zeng Yingying Liu Shuaifeng Zhou Hong Ji Jianxing Wang Xiaofang Zhou Yong Zhang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases World Health Organization Polio Reference Laboratory for the Western Pacific RegionKey Laboratory of Laboratory BiosafetyNational Health and Key Laboratory of Laboratory Biosafety of the National Health CommissionNational Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Linyi Center for Disease Control and Prevention Linyi CityShandong ProvinceChina Henan Provincial Center for Disease Control and Prevention Zhengzhou CityHenan ProvinceChina Shaanxi Provincial Center for Disease Control and Prevention Xi’an CityShaanxi ProvinceChina Hainan Provincial Center for Disease Control and Prevention Haikou CityHainan ProvinceChina Guizhou Provincial Center for Disease Control and Prevention Guiyang CityGuizhou ProvinceChina Gansu Provincial Center for Disease Control and Prevention Lanzhou CityGansu ProvinceChina Guangdong Provincial Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina Hebei Provincial Center for Disease Control and Prevention Shijiazhuang CityHebei ProvinceChina Hunan Provincial Center for Disease Control and Prevention Changsha CityHunan ProvinceChina Jiangsu Provincial Center for Disease Control and Prevention Nanjing CityJiangsu ProvinceChina shandong Provincial Center for Disease Control and Prevention Jinan CityShandong ProvinceChina Yunnan Provincial Center for Disease Control and Prevention Kunming CityYunnan ProvinceChina

Introduction:Coxsackievirus A6(CVA6)has emerged as a significant pathogen responsible for severe cases of hand,foot,and mouth disease(HFMD).This study aims to delineate the demographic characteristics and analyze the viral evolution of severe HFMD associated with CVA6,thereby assisting in its surveillance and ***:In this investigation,74 strains of CVA6 were isolated from samples collected from severe HFMD cases between 2012 and *** VP1 gene sequences of CVA6 were amplified and analyzed to assess population historical dynamics and evolutionary characteristics using BEAST,DnaSP6,and ***:A significant portion(94.4%)of severe CVA6-associated HFMD cases(51 out of 54,with 20 lacking age information)were children under 5 years *** the 74 CVA6 strains analyzed,72 belonged to the D3a sub-genotype,while only two strains were D2 *** average genetic distance between VP1 sequences prior to 2015 was 0.027,which increased to 0.051 when compared to sequences *** population dynamics analysis indicated three significant population expansions of severe CVA6-associated HFMD during 2012-2013,2013-2014,and 2019-2020,resulting in the formation of 65 distinct *** with the MCC tree findings,transitioning between regional haplotypes required multiple base substitutions,showcasing an increase in population diversity during the evolutionary process(from 14 haplotypes in 2013 to 55 haplotypes over the subsequent decade).Conclusions:CVA6,associated with severe HFMD,is evolving and presents a risk of outbreak ***,enhanced surveillance of severe HFMD is imperative.

关键词： thereby subsequent finding

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Effects of biofertilizer and water-saving irrigation interactions on the leaf photosynthesis and plant growth of tomatoes

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 177-185页

作者： Danyan Chen Yuchun Ai Peizhe Li Yue Dong Hailing Li Changyi Wang Xiaorui Jiang Shilong Li Yan Shen Aijun Dai Yuanyuan Feng College of Horticulture Jinling Institute of TechnologyNanjing 210038China Co-Innovation Center for Sustainable Forestry in Southern China College of Forestry and GrasslandCollege of Soil and Water ConservationNanjing Forestry UniversityNanjing 210037China institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural SciencesNanjing 210014China Agriculture Exchange and Cooperation Center of shandong province Jinan 250100China Murdoch Applied Innovation Nanotechnology research Group College of ScienceHealthEngineering and EducationMurdoch UniversityPerthWA 5150Australia

Irrigation and fertilizer interaction is an efficient cultivation management strategy for facility ***,the effects of irrigation and fertilizer management on tomato growth and its physiological factors remain *** this study,two irrigation patterns(W1,conventional irrigation;W2,water-saving irrigation)and four fertilizer application patterns(CF,chemical fertilizer;BOF,biological organic fertilizer;NPK,nutrient compound fertilizer;BOF+NPK)were selected to observe the effects of their interaction on cherry tomato plant growth,leaf photosynthesis and fruit quality through pot *** results showed that W2 treatments promoted plant height growth compared to W1 under the same fertilizer ***,irrigation and fertilizer management had significant effects on net photosynthetic rate,intercellular oxidation concentration,stomatal conductance and transpiration rate at the first sequence flowering and fruiting *** maximum tomato plant height(99.0 cm)was achieved under the irrigation and fertilizer pattern of BOF and W2,along with the highest fruit yield of 1.98 kg/plant,which was approximately 31.1%higher than the minimum yield under the combined CF and W2 *** W2 treatments,the application of either NPK or BOF increased the soluble sugar content of *** structural equation models showed that the soil alkali hydrolyzed nitrogen could directly significantly affect the yield and soluble *** findings suggest that optimization of irrigation-fertilizer interactions positively regulates tomato growth,providing an efficient model for tomato irrigation and fertilizer management and a reference for sustainable development of facility agriculture.

关键词： irrigation-fertilization interaction cherry tomato plant height leaf photosynthesis fruit yield and quality

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A novel polyionic liquid with lubricity and viscosity-increasing dual functionalities as the additive in aqueous lubrication system

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Friction 2024年第4期12卷 698-710页

作者： Bo YU Kun ZOU Rui WANG Qiang CHEN Rui DONG Xiao LIU Jiaying ZHANG Wenquan LV Qiangliang YU Meirong CAI Feng ZHOU College of Science Nanjing Forestry UniversityNanjing 210037China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 264006China Yantai Zhongke research institute of Advanced Materials and Green Chemical Engineering Yantai 264006China institute of Polymer Materials Nanjing Forestry UniversityNanjing 210037China

The polyionic liquid poly-PEGMA-r-METAC(PPM)with quaternary ammonium has been synthesized and evaluated as additive in aqueous lubricating *** rheological behavior of aqueous lubricating fluids with PPM has been characterized to confirm PPM’s function as a viscosity *** tribological behavior of aqueous lubricating fluids with PPM has been investigated on SRV-V and MTM testing *** was found that PPM has excellent viscosity-increasing,lubricating,and anti-wear properties as an additive for aqueous,which can be attributed to the ability of PPM to form the protective film and boundary tribofilm generated from complex tribochemical reaction on rubbing *** obtained PPM with dual functions of anti-corrosion additives and viscosity index improver can play an important role in diverse lubrication regimes.

关键词： polyionic liquid lubricant additives viscosity modifier lubrication regime

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Population genomic analysis unravels the evolutionary roadmap of pericarp color in rice

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Plant Communications 2024年第3期5卷 156-166页

作者： Lingjuan Xie Dongya Wu Yu Fang Chuyu Ye Qian-Hao Zhu Xinghua Wei Longjiang Fan institute of Crop Sciences&institute of Bioinformatics Zhejiang UniversityHangzhou 310058China shandong(Linyi)institute of Modern Agriculture Zhejiang UniversityLinyi 310014China Shanghai ZKW Molecular Breeding Technology Co. Ltd.Shanghai 200234China CSIRO Agriculture and Food Black Mountain LaboratoriesCanberraACT 2601Australia China National Rice research institute Chinese Academy of Agricultural SciencesHangzhou 311401China

Pigmented rice stands out for its nutritional value and is gaining more and more *** rice,domes-ticated red rice,and weedy rice all have a red pericarp and a comprehensive genetic background in terms of the red-pericarp *** performed population genetic analyses using 5104 worldwide rice acces-sions,including 2794 accessions with red or black pericarps,85 of which were newly sequenced in this *** results suggested an evolutionary trajectory of red landraces originating from wild rice,and the split times of cultivated red and white rice populations were estimated to be within the past 3500 *** red rice was found to feralize to weedy rice,and weedy rice could be further re-domesticated to cultivated red rice.A genome-wide association study based on the 2794 accessions with pigmented peri-carps revealed several new candidate genes associated with the red-pericarp trait for further functional *** results provide genomic evidence for the origin of pigmented rice and a valuable genomic resource for genetic investigation and breeding of pigmented rice.

关键词： red rice population genomics pericarp color re-domestication divergence time

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Cobalt phosphide-based composites as anodes for lithium-ion batteries:From mechanism,preparation to performance

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Particuology 2024年第5期88卷 11-31页

作者： Bo Lan Yishan Wang Jialei Lu Dongdong Liu Chuncheng Wei Xueqian Zhang Xiaoxiao Huang Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

With the further requirements of electronic products and powered vehicles,the development of a new generation with low-voltage and high-capacity anode materials is crucial for lithium-ion batteries(LIBs).Transition metal phosphides,especially cobalt phosphide(CoP)composites,have become a research hotspot for LIBs anode materials in recent years due to their high theoretical specific capacity,low polarization,and suitable voltage *** review first systematically discusses the lithium storage mechanism and preparation methods of CoP in current ***,the applications of CoP anode materials in LIBs are categorically reviewed,including the composites of CoP with various types of carbon materials and ***,the challenges and future development directions of CoP anode materials are summarized to provide guidance for further improving the lithium storage performance of CoP and its practical applications.

关键词： CoP Composites Preparation Anodes Lithium-ion batteries

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Tailoring the texture and mechanical properties of 3%Y_(2)O_(3)p/ZGK200 composites fabricated by unidirectional and cross rolling followed by annealing

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Journal of Magnesium and Alloys 2024年第4期12卷 1479-1495页

作者： Xihai Li Hong Yan Zhiwei Shan Rongshi Chen Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering University of Science and Technology of China72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano)and Hysitron Applied research Center in China(HARCC) State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China

3%Y_(2)O_(3)p/ZGK200 composites were subjected to unidirectional rolling(UR)and cross rolling(CR)at 400℃and 350℃followed by annealing at 300℃for 1 *** microstructure,texture and mechanical properties of rolled and annealed composites were systematically *** rolled composites exhibited a heterogeneous microstructure,consisting of deformed grains elongated along rolling direction(RD)and Y_(2)O_(3)particles bands distributed along *** annealing,static recrystallization(SRX)occurred and most deformed grains transformed into equiaxed grains.A non-basal texture with two strong T-texture components was obtained after UR while a non-basal elliptical/circle texture with circle multi-peaks was obtained after CR,indicating that rolling path had great influences on texture of the *** annealing process,R-texture component disappeared or weakened,as results,a non-basal texture with double peaks tilting from normal direction(ND)to transverse direction(TD)and a more random non-basal texture with circle multi-peaks were obtained for UR and CR composites,*** yield strength of rolled composites after UR showed obvious anisotropy along RD and TD while a low anisotropic yield strength was obtained after *** Y_(2)O_(3)particles broke during *** fracture of the composites was attributed to the existence of Y_(2)O_(3)clusters and interfacial debonding between particles and matrix during tension,as a result,the ductility was not as superior as matrix alloy.

关键词： Magnesium matrix composites Unidirectional rolling Cross rolling Texture Mechanical properties

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Functional microfluidics:theory,microfabrication,and applications

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International Journal of Extreme Manufacturing 2024年第3期6卷 140-173页

作者： Mingzhu Xie Ziheng Zhan Yinfeng Li Junkai Zhao Ce Zhang Zhaolong Wang Zuankai Wang Interdisciplinary research Center of Low-carbon Technology and Equipment College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082People’s Republic of China Energy research institute of shandong Academy of Sciences Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014People’s Republic of China Qian Xuesen Laboratory of Space Technology China Academy of Space Technology(CAST)Beijing 100094People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHong Kong Special Administrative Region of China 999077People’s Republic of China

Microfluidic devices are composed of microchannels with a diameter ranging from ten to a few hundred ***,quite a small(10-9–10-18l)amount of liquid can be manipulated by such a precise *** the past three decades,significant progress in materials science,microfabrication,and various applications has boosted the development of promising functional microfluidic *** this review,the recent progress on novel microfluidic devices with various functions and applications is ***,the theory and numerical methods for studying the performance of microfluidic devices are briefly ***,materials and fabrication methods of functional microfluidic devices are ***,the recent significant advances in applications of microfluidic devices are highlighted,including heat sinks,clean water production,chemical reactions,sensors,biomedicine,capillaric circuits,wearable electronic devices,and ***,perspectives on the challenges and future developments of functional microfluidic devices are *** review aims to inspire researchers from various fields engineering,materials,chemistry,mathematics,physics,and more—to collaborate and drive forward the development and applications of functional microfluidic devices,specifically for achieving carbon neutrality.

关键词： capillary theory functional devices functional microfluidics

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