检索结果-南通市图书馆

Petroleum pitch derived hard carbon via NaCl-template as anode materials with high rate performance for sodium ion battery

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2024年第7期18卷 1-10页

作者： Baoyu Wu Hao Sun xiaoxue Li Yinyi Gao Tianzeng Bao Hongbin Wu Kai Zhu Dianxue cao Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Hunan Hongshan New Energy Technology Co. LtdYiyang 413000China

Sodium-ion batteries(SIBs)have garnered significant interest in energy storage due to their similar working mechanism to lithium ion batteries and abundant reserves of sodium *** facile synthesis of a carbon-based anode materials with capable electrochemical performance is key to promoting the practical application of *** this work,a combination of petroleum pitch and recyclable sodium chloride is selected as the carbon source and template to obtain hard carbon(HC)anode for *** times and temperatures are optimized by assessing the sodium ion storage behavior of different HC *** optimized HC exhibits a remarkable capacity of over 430 mAh·g^(-1) after undergoing full activation through 500 cycles at a density of current of 0.1 A·g^(-1).Furthermore,it demonstrates an initial discharge capacity of 276 mAh·g^(-1) at a density of current of 0.5 A·g^(-1).Meanwhile,the optimized HC shows a good capacity retention(170 mAh·g^(-1) after 750 cycles)and a remarkable rate ability(166 mAh·g^(-1) at 2 A·g^(-1)).The enhanced capacity is attributed to the suitable degree of graphitization and surface area,which improve the sodium ion transport and storage.

关键词： petroleum pitch hard carbon sodium-ion batteries high rate recyclable template

迷失与拯救——论贾平凹都市小说中的现代人与传统禅

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

小说评论 2023年第6期 193-197页

作者：曹晓雪苏州大学

一、个体迷失与自我地狱展示现代人的个体迷失是文学创作的重要主题,贾平凹的都市小说同样展示着现代人的精神困境,但佛禅视角让他的作品显示出了异质性。个体迷失说到底就是忘却了“我是谁”,最终让自己处于一种无处安神、无处安生、... 详细信息

一、个体迷失与自我地狱展示现代人的个体迷失是文学创作的重要主题,贾平凹的都市小说同样展示着现代人的精神困境,但佛禅视角让他的作品显示出了异质性。个体迷失说到底就是忘却了“我是谁”,最终让自己处于一种无处安神、无处安生、无价值、无意义的状态。《废都》结尾,庄之蝶成了孤家寡人,梦到一首诗:“站是沙弥合掌,坐是莲花瓣开,小子别再作乖,是你出身所在。”

关键词：都市小说《废都》贾平凹精神困境迷失庄之蝶佛禅孤家寡人

Cordycepin promotes browning of white adipose tissue through an AMP-activated protein kinase(AMPK)-dependent pathway

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2019年第1期9卷 135-143页

作者： Guihong Qi Yue Zhou Xiaopo Zhang Jiaqi Yu Xin Li xiaoxue cao Chongming Wu Peng Guo Pharmacology and Toxicology Research Center Institute of Medicinal Plant Development Chinese Academy of Medical Sciences &Peking Union Medical College School of Pharmaceutical Science Hainan Medical University

Obesity is a worldwide epidemic. Promoting browning of white adipose tissue(WAT)contributes to increased energy expenditure and hence counteracts obesity. Here we show that cordycepin(Cpn), a natural derivative of adenosine, increases energy expenditure, inhibits weight gain, improves metabolic profile and glucose tolerance, decreases WAT mass and adipocyte size, and enhances cold tolerance in normal and high-fat diet-fed mice. Cpn markedly increases the surface temperature around the inguinal WAT and turns the inguinal fat browner. Further investigations show that Cpn induces the development of brown-like adipocytes in inguinal and, to a less degree, epididymal WAT depots. Cpn also increases the expression of uncoupling protein 1(UCP1) and other thermogenic genes in WAT and3T3-L1 differentiated adipocytes, in which AMP-activated protein kinase(AMPK) plays an important role. Our results provide novel insights into the function of Cpn in regulating energy balance, and suggest a potential utility of Cpn in the treatment of obesity.

关键词： Cordycepin Browning of white adi pose tissue(WAT) Thermogenesis AMP-activated protein kinase(AMPK) Obesity

Flexible Large-Area Graphene Films of 50-600 nm Thickness with High Carrier Mobility

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第9期15卷 1-14页

作者： Shiyu Luo Li Peng Yangsu Xie xiaoxue cao Xiao Wang Xiaoting Liu Tingting Chen Zhanpo Han Peidong Fan Haiyan Sun Ying Shen Fan Guo Yuxing Xia Kaiwen Li Xin Ming Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China School of Micro-Nanoelectronics Zhejiang UniversityZJU-Hangzhou Global Scientific and Technological Innovation CenterHangzhou 311200People’s Republic of China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518055GuangdongPeople’s Republic of China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Hangzhou Gaoxi Technol Co Ltd Hangzhou 311113People’s Republic of China

Bulk graphene nanofilms feature fast electronic and phonon transport in combination with strong light-matter interaction and thus have great potential for versatile applications,spanning from photonic,electronic,and optoelectronic devices to charge-stripping and electromagnetic shielding,***,large-area flexible close-stacked graphene nanofilms with a wide thickness range have yet to be ***,we report a polyacrylonitrile-assisted’substrate replacement’strategy to fabricate large-area free-standing graphene oxide/polyacrylonitrile nanofilms(lateral size~20 cm).Linear polyacrylonitrile chains-derived nanochannels promote the escape of gases and enable macro-assembled graphene nanofilms(nMAGs)of 50-600 nm thickness following heat treatment at 3,000℃.The uniform nMAGs exhibit 802-1,540 cm^(2)V-1s-1carrier mobility,4.3-4.7 ps carrier lifetime,and>1,581 W m^(-1)K^(-1)thermal conductivity(n MAG-assembled 10μm-thick films,mMAGs).nMAGs are highly flexible and show no structure damage even after 1.0×10^(5)cycles of ***,n MAGs broaden the detection region of graphene/silicon heterojunction from near-infrared to mid-infrared and demonstrate higher absolute electromagnetic interference(EMI)shielding effectiveness than state-of-the-art EMI materials of the same *** results are expected to lead to the broad applications of such bulk nanofilms,especially as micro/nanoelectronic and optoelectronic platforms.

关键词： Flexible large-area graphene nanofilm High carrier mobility Mid-infrared detection Electromagnetic interference shielding Heat transfer

RIPK1 plays a crucial role in maintaining regulatory T-Cell homeostasis by inhibiting both RIPK3-and FADD-mediated cell death

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2024年第1期21卷 80-90页

作者： xiaoxue Deng Lingxia Wang Yunze Zhai Qiuyue Liu Fengxue Du Yu Zhang Wenxing Zhao Tingtao Wu Yiwen Tao Jie Deng Yongbing cao Pei Hao Jiazi Ren Yunli Shen Zuoren Yu Yuejuan Zheng Haibing Zhang Haikun Wang State Key Laboratory of Cardiology Shanghai East HospitalTongji University School of MedicineShanghai200120China CAS Key Laboratory of Molecular Virology and Immunology Shanghai Institute of Immunity and InfectionChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthShanghai Institutes for Biological SciencesUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China The Research Center for Traditional Chinese Medicine Shanghai Institute of Infectious Diseases and BiosecurityShanghai University of Traditional Chinese MedicineShanghai201203China Institute of Vascular Disease Shanghai TCM-Integrated HospitalShanghai University of Traditional Chinese MedicineShanghai200433China

Regulatory T(T_(reg))cells play an essential role in maintaining immune balance across various physiological and pathological ***,the mechanisms underlying T_(reg)homeostasis remain incompletely ***,we report that RIPK1 is crucial for T_(reg) cell survival and *** generated mice with T_(reg) cell-specific ablation of Ripk1 and found that these mice developed fatal systemic autoimmunity due to a dramatic reduction in the Treg cell compartment caused by excessive cell *** conventional T cells,Treg cells with Ripk1 deficiency were only partially rescued from cell death by blocking FADD-dependent ***,simultaneous removal of both Fadd and Ripk3 completely restored the homeostasis of Ripk1-deficient Treg cells by blocking two cell death ***,our study highlights the critical role of RIPK1 in regulating Treg cell homeostasis by controlling both apoptosis and necroptosis,thereby providing novel insights into the mechanisms of Treg cell homeostasis.

关键词： Treg cell Homeostasis Apoptosis Necroptosis

数字金融与中小企业技术创新:“雨露均沾”抑或“厚此薄彼”?

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

金融发展研究 2022年第7期 24-31页

作者：曹晓雪张子文吉林财经大学会计学院吉林长春130117

数字金融的发展为中小企业获取技术创新资源带来了新的机遇,但其是否能够做到“雨露均沾”值得探索。基于资源依赖理论,利用2011—2020年中国A股中小板企业数据,通过面板门槛模型,实证研究数字金融对中小企业技术创新的影响。研究发现:... 详细信息

数字金融的发展为中小企业获取技术创新资源带来了新的机遇,但其是否能够做到“雨露均沾”值得探索。基于资源依赖理论,利用2011—2020年中国A股中小板企业数据,通过面板门槛模型,实证研究数字金融对中小企业技术创新的影响。研究发现:数字金融能够赋能中小企业技术创新,同时数字金融的赋能作用存在基于数字金融覆盖广度的单一门槛效应和基于企业市场地位的双重门槛效应。只有当数字金融覆盖广度和企业市场地位达到相应门槛值后,企业技术创新才能享受数字金融发展带来的赋能作用。进一步研究发现,数字金融对中小企业技术创新的赋能作用受到企业声誉的调节,高企业声誉会提高数字金融对技术创新的赋能作用。研究结论丰富了关于数字金融发展带来经济后果的结论,拓展了中小企业技术创新相关研究,为进一步实施创新驱动发展战略,促进中小企业积极应对数字金融发展,抓住市场机遇提供理论参考。

关键词：数字金融技术创新门槛效应中小企业

Macroscopic assembled graphene nanofilms based room temperature ultrafast mid-infrared photodetectors

在线全文

学校读者我要写书评

暂无评论

InfoMat 2022年第6期4卷 129-140页

作者： Li Peng Lixiang Liu Sichao Du Srikrishna Chanakya Bodepudi Lingfei Li Wei Liu Runchen Lai xiaoxue cao Wenzhang Fang Yingjun Liu Xinyu Liu Jianhang Lv Muhammad Abid Junxue Liu Shengye Jin Kaifeng Wu Miao-Ling Lin Xin Cong Ping-Heng Tan Haiming Zhu Qihua Xiong Xiaomu Wang Weida Hu Xiangfeng Duan Bin Yu Zhen Xu Yang Xu Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringInternational Research Center for X PolymersZhejiang UniversityHangzhouChina School of Micro-nanoelectronics State Key Laboratory of Silicon MaterialsHangzhou Global Scientific and Technological Innovation CenterZJU-UIUC Joint InstituteZhejiang UniversityHangzhouChina State Key Laboratory of Molecular Reaction Dynamics and Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina Department of Chemistry Zhejiang UniversityHangzhouChina Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructureSchool of Electronic Science and EngineeringNanjing UniversityNanjingChina State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaiChina Department of Chemistry and Biochemistry California Nanosystems InstituteUniversity of CaliforniaLos AngelesCaliforniaUSA

Graphene with linear energy dispersion and weak electron-phonon interaction is highly anticipated to harvest hot electrons in a broad wavelength ***,the limited absorption and serious backscattering of hot-electrons result in inadequate quantum yields,especially in the mid-infrared ***,we report a macroscopic assembled graphene(nMAG)nanofilm/silicon heterojunction for ultrafast mid-infrared *** assembled Schottky diode works in 1.5-4.0μm at room temperature with fast response(20-30 ns,rising time,4 mm2 window)and high detectivity(1.61011 to 1.9109 Jones from 1.5 to 4.0μm)under the pulsed laser,outperforming single-layer-graphene/silicon photodetectors by 2-8 *** performances are attributed to the greatly enhanced photo-thermionic effect of electrons in nMAG due to its high light absorption(~40%),long carrier relaxation time(~20 ps),low work function(4.52 eV),and suppressed carrier number *** nMAG provides a long-range platform to understand the hot-carrier dynamics in bulk 2D materials,leading to broadband and ultrafast MIR active imaging devices at room temperature.

关键词： graphene nanofilm heterojunction macro-assembly mid-infrared photodetector photothermionic effect

新生儿坏死性小肠结肠炎保守治疗后肠狭窄的临床特点及诊治探讨

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

临床小儿外科杂志 2024年第2期23卷 135-139页

作者：曹旭清潘晓雪沈淳国家儿童医学中心复旦大学附属儿科医院新生儿外科上海201102

目的总结新生儿坏死性小肠结肠炎(necrotizing enterocolitis,NEC)保守治疗后因肠狭窄行手术治疗患儿的临床特点和诊治经验,比较NEC单发与多发肠狭窄的预后情况。方法回顾性分析2014年1月至2020年12月复旦大学附属儿科医院新生儿外科收... 详细信息

目的总结新生儿坏死性小肠结肠炎(necrotizing enterocolitis,NEC)保守治疗后因肠狭窄行手术治疗患儿的临床特点和诊治经验,比较NEC单发与多发肠狭窄的预后情况。方法回顾性分析2014年1月至2020年12月复旦大学附属儿科医院新生儿外科收治的67例行NEC保守治疗后发生肠狭窄且接受手术治疗患儿的临床资料,收集患儿基本信息、NEC发病情况、肠狭窄术前检查、手术情况及术后恢复情况,分析NEC保守治疗后的临床特点及与肠狭窄发生之间的关系、手术预后以及诊治经验。将肠狭窄患儿分为单发狭窄组和多发狭窄组,比较两组预后情况。结果67例行NEC保守治疗后出现肠狭窄的患儿中,术前经肛门造影阳性率为83.9%(47/56)。60例行一期肠切除肠吻合术,7例行肠造瘘术。中位手术时间为发生NEC后第39天,中位手术时体重为2.53 kg。术中证实单发肠狭窄34例(34/67,50.7%),多发肠狭窄33例(33/67,49.3%)。共123处狭窄,除1处狭窄横跨小肠和结肠(自末端回肠至乙状结肠)以外,小肠狭窄65处[以末端回肠为主(37处)],结肠狭窄57处[以升结肠为主(27处)]。2例术后放弃治疗,2例一期吻合患儿因病情加重改行肠造瘘术,其中1例死亡,1例于术后12个月关闭造瘘。6例出院后出现并发症,其中肠管脱垂2例,黏连性肠梗阻4例;其余61例均恢复良好。手术治疗NEC保守治疗后肠狭窄的长期存活率为95.5%(64/67)。多发狭窄组切除肠管长度和手术时间显著长于单发狭窄组,差异有统计学意义(P0.05)。结论NEC保守治疗后肠狭窄的发生率虽然不高,但多发狭窄比例较高;且狭窄好发于末端回肠和结肠,术前下消化道造影阳性率较高。术中应仔细探查、彻底切除狭窄段;多发狭窄通常不影响术后恢复及预后。

关键词：坏死性小肠结肠炎保守治疗肠狭窄婴儿,新生

在线全文

学校读者我要写书评

暂无评论

硅烷偶联剂热压粘接聚酰亚胺与钛箔的研究

电镀与涂饰 2023年第2期42卷 20-25页

作者：许洪珠曹晓雪胡葆华高原烟台大学化学化工学院山东烟台264005 中节能万润股份有限公司山东烟台264000

采用甲苯/γ-氨丙基三乙氧基硅烷(APTES)溶剂热法对聚酰亚胺(Kapton)薄膜表面硅烷化,与盐酸水热处理后的Ti箔进行热压粘接。用拉伸试验评价Kapton薄膜与Ti箔的粘接效果,用原子力显微镜(AFM)、X射线光电子能谱仪(XPS)和材料显微镜研究其... 详细信息

采用甲苯/γ-氨丙基三乙氧基硅烷(APTES)溶剂热法对聚酰亚胺(Kapton)薄膜表面硅烷化,与盐酸水热处理后的Ti箔进行热压粘接。用拉伸试验评价Kapton薄膜与Ti箔的粘接效果,用原子力显微镜(AFM)、X射线光电子能谱仪(XPS)和材料显微镜研究其粘附机理。实验结果表明:甲苯溶剂热反应使Kapton薄膜表面的羧基与APTES分子中的氨基产生了化学键合。表面硅烷化的Kapton薄膜与Ti箔之间形成了稳定的界面粘附,抗拉强度高达46.2 MPa。

关键词：聚酰亚胺薄膜钛箔热压粘接硅烷偶联剂溶剂热法