检索结果-南通市图书馆

磁控溅射沉积制备SnSe薄膜及其热电性能研究

在线全文

学校读者我要写书评

暂无评论

功能材料 2021年第4期52卷 4012-4017页

作者：崔岩乔吉祥赵洋邰凯平万晔沈阳建筑大学材料科学与工程学院沈阳110168 中国科学院金属研究所沈阳材料科学国家研究中心沈阳110016

因为晶体结构以及热电性能各向异性,硒化锡(SnSe)沿b轴方向表现出优异的热电性能,受到业内的广泛关注。但关于SnSe薄膜研究的报道较少。本研究利用磁控溅射技术,将SnSe沉积到Si/SiO_(2)基底得到SnSe薄膜,分析了沉积温度对SnSe薄膜结构... 详细信息

因为晶体结构以及热电性能各向异性,硒化锡(SnSe)沿b轴方向表现出优异的热电性能,受到业内的广泛关注。但关于SnSe薄膜研究的报道较少。本研究利用磁控溅射技术,将SnSe沉积到Si/SiO_(2)基底得到SnSe薄膜,分析了沉积温度对SnSe薄膜结构和热电性能的影响。结果显示:沉积温度升高,晶粒尺寸相应增加,薄膜的结晶质量也随之提高。在573 K的沉积温度条件下,能获得高结晶质量和良好化学计量比的(111)取向SnSe薄膜,该薄膜具有约为1.25μW/(cm·K^(2))的最大功率因子(PF)。当沉积温度升高至773 K时,可以得到具有超高迁移率和赛贝克系数的(400)织构SnSe薄膜,该薄膜在573 K的测试温度下,其最大PF为0.5μW/(cm·K^(2)),实现接近于文献报道的相同温度下单晶SnSe沿a轴的PF。本研究的结果证明了高沉积温度对SnSe薄膜微观结构和热电性能调控的重要性,并且为通过设计和调控SnSe基薄膜有序结构来提升其热电性能提供了新的研究思路。

关键词： SnSe薄膜磁控溅射热电性能织构功率因子

Mapping Genome-wide Binding Sites of Prox1 in Mouse Cochlea Using the CUT&RUN Approach

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2021年第12期37卷 1703-1707页

作者： Zhengnan Luo jixiang Zhang Lianyong qiao Falong Lu Zhiyong Liu Institute of Neuroscience State Key Laboratory of NeuroscienceCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology Shanghai 201210China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Dear Editor,Our auditory organ,the cochlea,resides in the ventral portion of the inner ear,and its sensory epithelium,the organ of Corti,contains hair cells(HCs)and supporting cells(SCs),which are both descendants of the same *** are prone to damage by multiple ototoxic factors,and how to regenerate damaged HCs using key genes involving cochlear development is of importance[1,2].Cochlear progenitor cells express Sox2 and prolif-erate before embryonic day 12.5(E12.5)in the mouse but become quiescent in an apical-to-basal gradient between E12.5 and E14.5[3].

关键词： auditory epithelium Mapping

Optimization of energy consumption structure based on carbon emission reduction target:A case study in Shandong Province,China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Population,Resources and Environment 2022年第2期20卷 125-135页

作者： jixiang Liu Haichao Ma Qingsong Wang Shu Tian Yue Xu Yujie Zhang Xueliang Yuan qiao Ma Yuan Xu Shuo Yang National Engineering Laboratory for Reducing Emissions from Coal Combustion Engineering Research Center of Environmental Thermal Technology of Ministry of EducationShandong Key Laboratory of Energy Carbon Reduction and Resource UtilizationResearch Center for Sustainable DevelopmentSchool of Energy and Power EngineeringShandong UniversityJinanShandong250061China

It is urgent to significantly reduce greenhouse gas emissions to actively deal with global *** paper investigates Shandong Province,a typical province of energy consumption,as the research object,aiming to optimize total energy consumption and consumption structure in the future planning *** paper constructs a methodological system to optimize energy consumption structure in Shandong Province,using a scenario combination of system dynamics(SD)prediction and analysis based on the coupling of key scenario elements affecting different energy consumption from different *** equation modeling and SD sensitivity analysis indicate an overlap between key factors restricting energy *** the key scenario factors can better reflect the internal mechanism of energy consumption *** on this,21 scenarios based on different combinations of the key elements are *** SD prediction and analysis,the most suitable scenario mode for optimizing energy consumption structure in Shandong Province is *** paper provides a suitable development range for the average gross domestic product growth rate,the proportion of secondary industry,energy consumption intensity of secondary industry,and the urbanization rate for Shandong *** paper can provide a reference for similar research and the government in formulating the optimization scheme of energy consumption structure.

关键词： Energy consumption structure System dynamics Structural equation Scenario combination analysis Carbon emissions Optimization Research

KLF4 facilitates chromatin accessibility remodeling in porcine early embryos

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第1期67卷 96-112页

作者： Wei Zhu Guowei Bu Ruifeng Hu jixiang Zhang Lianyong qiao Kai Zhou Tingting Wang qiao Li Jingjing Zhang Linhui Wu Yali Xie Taotao Hu Shichun Yang Jiaqi Guan Xiaoyu Chu Juanjuan Shi Xia Zhang Falong Lu Xin Liu Yi-Liang Miao Institute of Stem Cell and Regenerative Biology College of Animal Science and Veterinary MedicineHuazhong Agricultural UniversityWuhan 430070China Key Laboratory of Agricultural Animal Genetics Breeding and Reproduction(Huazhong Agricultural University)Ministry of EducationWuhan 430070China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyInnovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China Frontiers Science Center for Animal Breeding and Sustainable Production Huazhong Agricultural UniversityWuhan 430070China Hubei Hongshan Laboratory Wuhan 430070China

Chromatin accessibility remodeling driven by pioneer factors is critical for the development of early *** studies have illustrated several pioneer factors as being important for agricultural animals,but what are the pioneer factors and how the pioneer factors remodel the chromatin accessibility in porcine early embryos is not *** employing low-input DNase-seq(liDNase-seq),we profiled the landscapes of chromatin accessibility in porcine early embryos and uncovered a unique chromatin accessibility reprogramming pattern during porcine preimplantation *** data revealed that KLF4 played critical roles in remodeling chromatin accessibility in porcine early *** down of KLF4 led to the reduction of chromatin accessibility in early embryos,whereas KLF4 overexpression promoted the chromatin openness in porcine ***,KLF4 deficiency resulted in mitochondrial dysfunction and developmental failure of porcine *** addition,we found that overexpression of KLF4 in blastocysts promoted lipid droplet accumulation,whereas knockdown of KLF4 disrupted this *** together,our study revealed the chromatin accessibility dynamics and identified KLF4 as a key regulator in chromatin accessibility and cellular metabolism during porcine preimplantation embryo development.

关键词： porcine embryos liDNase-seq chromatin accessibility KLF4 mitochondrion lipid droplets

Single-cell RNA sequencing reveals Nestin+active neural stem cells outside the central canal after spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2022年第2期65卷 295-308页

作者： Muya Shu Xiaoyu Xue Hu Nie Xianming Wu Minghan Sun Lianyong qiao Xing Li Bai Xu Zhifeng Xiao Yannan Zhao Yongheng Fan Bing Chen jixiang Zhang Ya Shi Yaming Yang Falong Lu Jianwu Dai State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100080China University of the Chinese Academy of Sciences Beijing 100101China Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan ProvinceChangsha 410008China

Neural stem cells(NSCs)in the spinal cord hold great potential for repair after spinal cord injury(SCI).The ependyma in the central canal(CC)region has been considered as the NSCs source in the spinal ***,the ependyma function as NSCs after SCI is still under *** used Nestin as a marker to isolate potential NSCs and their immediate progeny,and characterized the cells before and after SCI by single-cell RNA-sequencing(scRNA-seq).We identified two subgroups of NSCs:the subgroup located within the CC cannot prime to active NSCs after SCI,while the subgroup located outside the CC were activated and exhibited the active NSCs properties after *** demonstrated the comprehensive dynamic transcriptome of NSCs from quiescent to active NSCs after *** study reveals that Nestin+cells outside CC were NSCs that activated upon SCI and may thus serve as endogenous NSCs for regenerative treatment of SCI in the future.

关键词： neural stem cell Nestin scRNA-seq Smart-seq2 ependymal cell

Transplantation of neural stem progenitor cells from different sources for severe spinal cord injury repair in rat

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第5期23卷 300-313页

作者： Bai Xu Man Yin Yaming Yang Yunlong Zou Wenbin Liu Lianyong qiao jixiang Zhang Zhan Wang Yayu Wu He Shen Minghan Sun Weiyuan Liu Weiwei Xue Yongheng Fan Qi Zhang Bing Chen Xianming Wu Ya Shi Falong Lu Yannan Zhao Zhifeng Xiao Jianwu Dai State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing100101China Wuxi School of Medicine Jiangnan UniversityWuxi214122China Peking University Health Science Center Beijing100191China China-Japan Union Hospital of Jilin University Changchun130033China Division of Nanobiomedicine Suzhou Institute of NanoTech and NanoBionicsChinese Academy of SciencesSuzhou215123China

Neural stem progenitor cell(NSPC)transplantation has been regarded as a promising therapeutic method for spinal cord injury(SCI)***,different NSPCs may have different therapeutic effects,and it is therefore important to identify the optimal NSPC *** our study,we compared the transcriptomes of human fetal brain-derived NSPCs(BNSPCs),spinal cord-derived NSPCs(SCNSPCs)and H9 embryonic stem-cell derived NSPCs(H9-NSPCs)in vitro and subsequently we transplanted each NSPC type on a collagen scaffold into a T8-9 complete SCI rat model in *** vitro data showed that SCNSPCs had more highly expressed genes involved in nerve-related functions than the other two cell *** vivo,compared with BNSPCs and H9-NSPCs,SCNSPCs exhibited the best therapeutic effects;in fact,SCNSPCs facilitated electrophysiological and hindlimb functional *** study demonstrates that SCNSPCs may be an appropriate candidate cell type for SCI repair,which is of great clinical significance.

关键词： Spinal cord injury Brain-derived NSPCs Spinal cord-derived NSPCs H9 embryonic stem cell-derived NSPCs Collagen scaffolds

模的fann-内射维数及fann-平坦维数

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

四川师范大学学报（自然科学版） 2016年第1期39卷 33-36页

作者：徐龙玉万吉湘乔磊西南科技大学理学院四川绵阳621010 绵阳师范学院数学与计算机科学学院四川绵阳621000 四川师范大学数学与软件科学学院四川成都610066

设R为环,给出R-模的fann-内射维数、fann-平坦维数概念,并在此基础上定义R的左整体fann-维数(记为***(R))和R的右整体fann-平坦维数(记为***(R)).若记所有fann-内射R-模构成的类为FAI,证明了若FAI满足单同态的上核是封闭的,则有***(R)=*... 详细信息

设R为环,给出R-模的fann-内射维数、fann-平坦维数概念,并在此基础上定义R的左整体fann-维数(记为***(R))和R的右整体fann-平坦维数(记为***(R)).若记所有fann-内射R-模构成的类为FAI,证明了若FAI满足单同态的上核是封闭的,则有***(R)=***(R),且此时***(R)≤1的充要条件是R的每个有限生成左零化子都是投射模.

关键词： fann-内射模 fann-内射维数 fann-平坦模 fann-平坦维数左AC环

在线全文

学校读者我要写书评

暂无评论

非奇异环的同调刻画

四川师范大学学报（自然科学版） 2016年第4期39卷 514-517页

作者：徐龙玉胡葵乔磊万吉湘西南科技大学理学院四川绵阳621010 四川师范大学数学与软件科学学院四川成都610066 绵阳师范学院数学与计算机科学学院四川绵阳621000

引入ZP-平坦右模来刻画左非奇异环.设R是环,右R-模N称为ZP-平坦模,是指对任意a∈Z(RR),有TorR1(N,R/Ra)=0;左R-模M称为ZP-内射模,是指对任意a∈Z(RR),有Ext1R(R/Ra,M)=0.证明了关于ZP-平坦模的Lambek准则,即右R-模N是ZP-平坦模当且仅当... 详细信息

引入ZP-平坦右模来刻画左非奇异环.设R是环,右R-模N称为ZP-平坦模,是指对任意a∈Z(RR),有TorR1(N,R/Ra)=0;左R-模M称为ZP-内射模,是指对任意a∈Z(RR),有Ext1R(R/Ra,M)=0.证明了关于ZP-平坦模的Lambek准则,即右R-模N是ZP-平坦模当且仅当其特征模N+是ZP-内射模.还证明了R是左非奇异环当且仅当任意右R-模是ZP-平坦模当且仅当内射左R-模的商模是ZP-内射模.

关键词：本质子模 ZP-平坦模 ZP-内射模非奇异环

在线全文

学校读者我要写书评

暂无评论

沥青质颗粒在垂直井筒中的运移特征流速

中国石油大学学报（自然科学版） 2024年第3期48卷 127-133页

作者：罗荣乔星亚杨小辉熊瑞颖李宁博郭继香中国石化西北油田分公司新疆乌鲁木齐830011 中国石油大学(北京)非常规油气科学技术研究院北京102249

为防止沥青质沉积堵塞油井,需明确垂直井筒内流体携沥青质颗粒运移特性。通过静态沉降试验探究不规则形状沥青质颗粒沉降末速规律,采用垂直井筒液携固流动试验装置研究不同因素对沥青质运移临界流速的影响程度,建立沥青质颗粒沉降末速... 详细信息

为防止沥青质沉积堵塞油井,需明确垂直井筒内流体携沥青质颗粒运移特性。通过静态沉降试验探究不规则形状沥青质颗粒沉降末速规律,采用垂直井筒液携固流动试验装置研究不同因素对沥青质运移临界流速的影响程度,建立沥青质颗粒沉降末速和运移临界流速计算公式。结果表明:沥青质表面不均匀性增大了沉降阻力,使沉降等效直径小于颗粒实测粒径;运移临界流速与颗粒粒径成正比、与液相黏度成反比,颗粒体积分数对运移临界流速影响较小;相同条件下流体携沥青质运移临界流速为沉降末速的1.182倍。

关键词：垂直井筒沉降等效直径沉降末速临界流速沥青质颗粒