检索结果-南通市图书馆

International Journal of Minerals,Metallurgy and Materials 2009年第1期16卷 124-127页

作者： Ying-chieh Lee wei-hua lu Su-hei Wang Chai-wei Lin Department of Material Engineering Pingtung University of Technology ＆ Science China Taipei Electronic Ceramics Research Center Yageo Kaohsiung 811 China Taipei

The effect of SiO2 doping on the sintering behavior, microstructure, and dielectric properties of BaTiO3-based ceramics has been investigated. Silica was added to the BaTiO3-based powder prepared by the solid state method with 0.075mol%, 0.15mol%, and 0.3mol%, respectively. The SiO2-doped BaTiO3-based ceramic with high density and uniform grain size were obtained, which were sintered in reducing atmosphere. A scanning electron microscope, X-ray diffraction, and LCR meter were used to determine the microstructure as well as the dielectric properties. SiO2 can form a liquid phase belonging to the ternary system of BaO-TiO2-SiO2, leading to the formation of BaTiO3 ceramics with high density at a lower sintering temperature. The SiO2-doped BaTiO3-based ceramics can be sintered to a theoretical density higher than 95% at 1220℃ with a soaking time of 2 h. The dielectric constants of the sample with 0.15mol% SiO2 addition sintered at 1220℃ is about 9000. Doping with a small amount of silica can improve the sintering and dielectric properties of BaTiO3-based ceramics.

关键词： barium titanate multilayer ceramic capacitor (MLCC) reducing atmosphere dielectric properties

Greenhouses for CO_(2) sequestration from atmosphere

在线全文

学校读者我要写书评

暂无评论

Carbon Resources Conversion 2018年第2期1卷 183-190页

作者： Jie Bao wei-hua lu Jigang Zhao Xiaotao T.Bi College of Chemical Engineering Fuzhou UniversityFuzhouChina Clean Energy Research Centre and Department of Chemical and Biological Engineering University of British ColumbiaVancouverCanada School of Chemical Engineering East China University of Science and TechnologyShanghaiChina

Escalating threat of global warming and the steady growth in world population require the development of transformative greenhouse gas control technologies and food production systems of high energy efficiency,small environmental footprint and low *** control the global temperature rise below 2℃ by 2050,global greenhouse gas emissions need to be cut by more than 80%.At the same time,our land needs to be utilized more efficiently and productively in order to produce enough food to feed projected 9 billion people with less available land area for food production in *** propose to develop a modern urban vertical farming system,*** equipped with a Carbon Enrichment for Plant Stimulation(CEPS)system,to enhance land use efficiency and thus increase food productivity and,at the same time,to sequestrate CO_(2) from ambient *** deployment of such a CEPS system will have a potential to remove more than 500 million tonnes CO_(2) from air annually,and increase the current food productivity by more than 15 times than the open field *** deployment of the CEPS technology will also promote locally produced food,benefiting urban economical development and job creation.

关键词： Carbon enrichment for plant stimulation Greenhouses Temperature swing adsorption Sequestration of atmospheric CO_(2)

Studies on the Synthesis,Characterization and Properties of the Reactive Thermotropic Liquid Crystalline Polymer

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

复旦学报（自然科学版） 2007年第5期46卷 812-814页

作者： Chun wei, Chi-hua lu, Deng Xu, Yong-yang Gong, wei-zhong lu, Ming Zeng (Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China) Guilin University of Technology Key Laboratory of New Processing Technology for Non ferrous Metals and MaterialsMinistry of Education Guilin 541004

1 Introduction Four species of reactive thermotropic liquid crystalline polymer (LCMC) with different relative molecular weight were synthesized in this work (see scheme 1, n=2, 6, 10, ∞.n means number of repeat structure unit). Their structure, morphology and properties were investigated systemically by differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), Wide-angle X-ray diffraction (WAXD), polarizing opticalmicroscopy (POM) and ubb...

关键词： thermotropic liquid crystalline polymer relative molecular weight synthesis

Tracking of CFSE-labeled endothelial progenitor cells in laser-injured mouse retina

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2011年第5期124卷 751-757页

作者： SHI Hui YANG wei CUI Zhi-hua lu Cheng-wei LI Xiao-hong LIANG Ling-ling SONG E Department of Ophthalmology First Hospital Jilin University Changchun Jilin 130021 China

Background Endothelial progenitor cells （EPCs） transplantation is a promising therapeutic strategy for ischemic retinopathy. The current study aimed to establish a simple, reliable and fluorescent labeling method for tracking EPCs with 5-（and-6）-carboxyfluorescein diacetate succinimidyl ester （CFSE） in laser-injured mouse retina. Methods EPCs were isolated from human umbilical cord blood mononuclear cells, cultivated, and labeled with various concentrations of CFSE. Based on fluorescence intensity and cell morphology, a 15 minutes incubation with 5 μmol/L CFSE at 37℃ was selected as the optimal labeling condition. The survival capability and the apoptosis rate of CFSE-labeled EPCs were measured by Trypan blue staining and Annexin V/PI staining assay respectively. Fluorescence microscopy was used to observe the label stability during the extended culture period. Labeled EPCs were transplanted into the vitreous cavity of pigmented mice injured by retinal laser photocoagulation. Evans Blue angiography and flat mounted retinas were examined to track the labeled *** EPCs labeled with 5 μmol/L CFSE presented an intense green fluorescence and maintained normal morphology, with no significant changes in the survival capability or apoptosis rate after being labeled for 2 days, 1 and 4 weeks, The fluorescence intensity gradually decreased in the cells at the end of 4 weeks. Evans Blue angiography of the retina displayed the retinal capillarity network clearly and fluorescence leakage was observed around photocoagulated spots in the laser-injured mouse model. One week after transplantation of labeled EPCs, the fluorescent cells were identified around the photocoagulated lesions. Four weeks after transplantation, fluorescent tube-like structures were observed in the retinal vascular *** EPCs could be labeled by CFSE in vitro and monitored in vivo for at least 4 weeks, and participate in the repair of injured retinal vessels.

关键词： endothelial progenitor cells 5-(and-6)-carboxyfluorescein diacetate succinimidyl ester cell tracking retina laser photocoagulation cell transplantation

Polo-like kinase 1 protects intestinal epithelial cells from apoptosis during sepsis via the nuclear factor-κB pathway

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2020年第15期133卷 1886-1888页

作者： Ying-Ya Cao Zhen Wang Lin-Ming lu Zeng-Xiang Xu Jia-Jia Li Xiao-Gan Jiang wei-hua lu Department of Intensive Care Unit Yijishan HospitalFirst Affiliated Hospital of Wannan Medical CollegeWuhuAnhui 241001China Department of Pathology Yijishan HospitalFirst Affiliated Hospital of Wannan Medical CollegeWuhuAnhui 241001China

To the Editor:Sepsis is defined as the life-threatening organ dysfunction caused by dysregulated host response to infection,eventually leading to multiple organ dysfunction *** gut,which is considered to play a signif... 详细信息

关键词： sepsis eventually infection

A self-adaptive inorganic in-situ separator by particle crosslinking for nonflammable lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 469-480页

作者： Jiarui Yang Jiuzhou Liu Wenrui Cai Ziyu Zhao Shan Wang lu He Shanshan Lv Zhiwei Zhu Zhongfeng Ji Guojiang Wen hua Li Yuanming Zhai Xuewei Fu wei Yang Yu Wang College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University

All-safe liquid-state lithium-ion batteries(ASLS-LIBs) is of great interest as they can potentially combine the safety of all-solid-state batteries with the high performance and low manufacturing cost of traditional liquid-state LIBs. However, the practical success of ASLS-LIBs is bottlenecked by the lack of advanced separator technology that can simultaneously realize high performances in puncturing-tolerability,fire-resistance, and importantly, wetting-capability with non-flammable liquid-electrolytes. Here, we propose a concept of inorganic in-situ separator(IISS) by hybrid-sol physical crosslinking directly onto the electrode surface to address the above challenges. Particularly, the hybrid-sol is designed with silica nanoparticles as the building block and poly(vinylidene difluoride) nanoparticles as the crosslinking agent. The critical factors for controlling the IISS microstructures and properties have been systematically investigated. The advantages of the IISS have been confirmed by its fast wetting with various fireresistant liquid-electrolytes, customizable thickness and porous structures, robust interface with planar or three-dimensional(3D)-structured electrodes, and importantly, unexpected self-adaptability against puncturing. Enabled by the above merits, a fire-resistant ASLS-LIB is successfully assembled and demonstrated with stable electrochemical performance. This sol-crosslinked IISS may open an avenue for the studies on the next-generation separator technology, cell assembling, solid electrolyte processing as well as non-flammable secondary batteries.

关键词： Silica nanoparticles

癫■患者发作间期局限性正电子发射体层摄影术高代谢机制及临床意义

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国现代神经疾病杂志 2019年第8期19卷 603-609页

作者：魏路华雷向宇王薇薇吴逊北京大学第一医院神经内科

发作间期局限性PET高代谢在临床实践中常对致癇灶的定位造成困扰,因此正确解读其临床意义具有重要价值。通过文献回顾,对发作间期PET高代谢信号的可能机制如频繁癇样放电、代偿性活动、兴奋性毒性作用等进行分析,并对一些特定癫癇综合... 详细信息

发作间期局限性PET高代谢在临床实践中常对致癇灶的定位造成困扰,因此正确解读其临床意义具有重要价值。通过文献回顾,对发作间期PET高代谢信号的可能机制如频繁癇样放电、代偿性活动、兴奋性毒性作用等进行分析,并对一些特定癫癇综合征或疾病发作间期局限性PET高代谢信号的出现频率和可能机制进行综述,有助于归纳其在不同临床背景下作为术前评价指标的价值;同时提示对发作间期局限性PET高代谢信号的解读应结合病因及其他临床资料进行综合分析,以助临床实践。

关键词：癫癇正电子发射断层显像术高代谢(非MeSH词) 综述

Universal design of three-dimensional porous graphene-iron based promotors for kinetically rationalized lithium-sulfur chemistry

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 192-200页

作者： hua Gao Yunfeng Zhang Menglei Wang Ruoxuan Yang Shuai Feng Xuan Cao Yaping Zhang Zhongyuan lu Yingze Song State Key Laboratory of Environment-Friendly Energy Materials School of Materials and Chemistry Southwest University of Science and Technology School of Material Science and Engineering Henan University of Technology College of Chemistry and Chemical Engineering Taishan University

Lithium-sulfur （Li-S） batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy ***,notorious polysulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S *** rationally designed highly active electrocatalysts can facilitate polysulfide conversion,the universal and scalable synthesis strategies need to be ***,a universal synthetic strategy to construct a series of three-dimensional （3D） porous graphene-iron （3DGr-Fe） based electrocatalysts involving 3DGr-FeP,3DGr-Fe3C,and 3DGr-Fe3Se4is exploited for manipulating the Li-S redox *** has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium polysulfide conversion,thereby bolstering the overall electrochemical *** Li-S battery with the 3DGr-Fe based electrocatalyst exhibits remarkable capacity retention of 94.8%upon 100 times at 0.2 ***,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocatalyst delivers superior capacity of 1060.71 mA h g-1and guarantees for the continuous 30 min work of fan *** investigation gives comprehensive insights into the design,synthesis,and mechanism of 3DGr-Fe based electrocatalysts with high activity toward efficient and durable Li-S batteries.

关键词： Redox reactions

Infiltration by monocytes of the central nervous system and its role in multiple sclerosis: reflections on therapeutic strategies

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 779-793页

作者： Guangyong Zhang Qing Yao Chubing Long Pengcheng Yi Jiali Song luojia Wu wei Wan Xiuqin Rao Yue Lin Gen wei Jun Ying Fuzhou hua Department of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Laboratory of Anesthesiology of Jiangxi Province NanchangJiangxi ProvinceChina

Mononuclear macrophage infiltration in the central nervous system is a prominent feature of neuroinflammation. Recent studies on the pathogenesis and progression of multiple sclerosis have highlighted the multiple roles of mononuclear macrophages in the neuroinflammatory process. Monocytes play a significant role in neuroinflammation, and managing neuroinflammation by manipulating peripheral monocytes stands out as an effective strategy for the treatment of multiple sclerosis, leading to improved patient outcomes. This review outlines the steps involved in the entry of myeloid monocytes into the central nervous system that are targets for effective intervention: the activation of bone marrow hematopoiesis, migration of monocytes in the blood, and penetration of the blood–brain barrier by monocytes. Finally, we summarize the different monocyte subpopulations and their effects on the central nervous system based on phenotypic differences. As activated microglia resemble monocyte-derived macrophages, it is important to accurately identify the role of monocyte-derived macrophages in disease. Depending on the roles played by monocyte-derived macrophages at different stages of the disease, several of these processes can be interrupted to limit neuroinflammation and improve patient prognosis. Here, we discuss possible strategies to target monocytes in neurological diseases, focusing on three key aspects of monocyte infiltration into the central nervous system, to provide new ideas for the treatment of neurodegenerative diseases.

关键词： blood–brain barrier macrophages monocytes multiple sclerosis neuroinflammation review therapy

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua lu Jun Shen Xin Zhang Lingcong Chao Liang Chen Ding Zhang Tao wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added