检索结果-南通市图书馆

High-voltage LiCoO_(2) cathodes for high-energy-density lithiumion battery

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第12期41卷 3946-3956页

作者： Jing-Chao Zhang Zhe-Dong Liu Cui-Hua Zeng Jia-Wei Luo yi-Da deng Xiao-Ya Cui Ya-Nan Chen School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Beijing Frontier Research Center for Biological Structures Tsinghua UniversityBeijing 100084China Ministry of Education Key Laboratory of Protein Sciences Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China

As the earliest commercial cathode material for lithium-ion batteries,lithium cobalt oxide(LiCoO_(2)) shows various advantages,including high theoretical capacity,excellent rate capability,compressed electrode density,*** now,it still plays an important role in the lithium-ion battery *** to these advantages,further increasing the charging cutoff voltage of LiCoO_(2)to guarantee higher energy density is an irresistible development trend of LiCoO_(2)cathode materials in the ***,using high charging cutoff voltage may induce a lot of negative effects,especially the rapid decay of cycle *** are mainly caused by rapid destruction of crystal structure and aggravation of interface side reaction at high voltage during the ***,how to maintain a stable crystal structure of LiCoO_(2)to ensure the excellent long cycle performance at high voltage is a hot research issue in the further application of LiCoO_(2).In this review,we summarized the failure causes and extensive solutions of LiCoO_(2)at high voltage and promoted some new modification ***,the development trend of solving the failure problem of high-voltage LiCoO_(2)in the future such as defect engineering and high-temperature shock technique is also discussed.

关键词： Lithium-ion battery Lithium cobalt oxide(LiCoO_(2))cathode High voltage Cycle performance Crystal structure

Emission and drying kinetics of paper mill sludge during contact drying process

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第11期10卷 1670-1677页

作者： Wen-yi deng Xiao-dong LI Jian-hua YAN Fei WANG Sheng-yong LU Yong CHI Ke-fa CEN State Key Laboratory of Clean Energy Utilization Institute for Thermal Power Engineering Zhejiang University Hangzhou 310027 China

The emission and contact drying kinetics of the paper mill sludge (PMS) were studied through experiments carried out in a paddle dryer. To get a better understanding of its drying mechanism, a penetration model developed by Tsotsas and Schlünder (1986) was used to simulate the drying kinetics of the PMS. The result indicated that this kinetics could be divided into three phases: pasty, lumpy and granular phases, and could be successfully simulated by the penetration model as the related sludge parameters were integrated into the model. The emission rate curves of the volatile compounds (VCs) were interrelated to the drying rate curve of the PMS, especially for volatile fatty acids (VFAs) and ammonia in this study.

关键词： Contact drying Emission Paper mill sludge (PMS) Paddle dryer

Synthesis and Crystal Structure of a Novel Manganese Coordination Polymer: 2,5-Bis(4-pyridyl)-3,4-diaza-2,4-hexadiene

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2007年第2期26卷 219-223页

作者： CHEN Man-Sheng deng yi-Fang ZHANG Chun-Hua KUANG Dai-Zhi FENG Yong-Lan PENG Yun-Lin Department of Chemistry and Materials Science Hen gyan g Normal University Hen gyan g 421008 China

A new manganese coordination polymer 1, [Mn（H2O）4（L）]n（ClO4）2n.2nH2O.3nL （L = 2,5-bis（4-pyridyl）-3,4-diaza-2,4-hexadiene）, has been synthesized and structurally characterized. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group Pn with a = 13.9176（8）, b = 15.4754（9）, c = 15.9670（9） A, β = 99.5010（10）°, V = 3391.8（3） ]k3, Z = 2, C56H68C12MnN16O14, Mr= 1315.10, Dc = 1.288 g/cm^3,μ = 0.344 mm^-1, F（000） = 1374, R = 0.0733 and wR = 0.2035. In the crystal the manganese atom is six-coordinated by two nitrogen atoms from 2,5-bis（4-pyridyl）-3,4-diaza-2,4-hexadiene and four oxygen atoms from water molecules, completing an octahedral geometry. The title complex exhibits a novel supramolecular layer architecture sustained by the concurrence of coordination bonds, hydrogen bonds, and π-π stacking interactions.

关键词： manganese complex Schiff bases crystal structure

25例儿童抗髓鞘少突胶质细胞糖蛋白免疫球蛋白G抗体相关疾病药学服务的切入点探讨

在线全文

学校读者我要写书评

暂无评论

儿科药学杂志 2024年第10期30卷 20-24页

作者：谭婕邓毅高羽蔡江晖陈美华张丹电子科技大学医学院附属妇女儿童医院成都市妇女儿童中心医院成都617731

目的:探讨临床药师对抗髓鞘少突胶质细胞糖蛋白免疫球蛋白G抗体相关疾病(MOGAD)药学监护的切入点、侧重点,为临床药学实践工作提供参考。方法:临床药师以2021-2022年在我院治疗的25例MOGAD患儿为研究对象,深入开展个体化药学服务,设置... 详细信息

目的:探讨临床药师对抗髓鞘少突胶质细胞糖蛋白免疫球蛋白G抗体相关疾病(MOGAD)药学监护的切入点、侧重点,为临床药学实践工作提供参考。方法:临床药师以2021-2022年在我院治疗的25例MOGAD患儿为研究对象,深入开展个体化药学服务,设置重点监护患儿,评估疗效并调整治疗方案,监测药品不良反应,关注药物相互作用。结果:25例患儿中,男12例,年龄(6.3±3.0)岁,体质量21.0(18.0,33.3)kg;女13例,年龄(7.7±3.3)岁,体质量25.0(17.9,33.9)kg。所有患儿均符合糖皮质激素治疗指征,7例患儿发生了不良反应,5例(20.0%)高眼压,1例(4.0%)肝酶异常,1例(4.0%)呕吐,总体不良反应发生率为28.0%。2例复发患儿加用免疫抑制剂治疗,1例患儿药物治疗存在相互作用。结论:临床药师作为多学科治疗团队中的一员,全程参与药物治疗管理,主动为患者提供药学监护服务,有助于促进合理用药,体现了药师工作价值。

关键词：临床药师抗髓鞘少突胶质细胞糖蛋白免疫球蛋白G抗体相关疾病药学监护

基于YOLOv5的地铁站场景下烟火检测系统研究

在线全文

学校读者我要写书评

暂无评论

微处理机 2024年第2期45卷 60-64页

作者：邓懿唐晨欢胡文宇万擎王兵茹天津津铁电子科技有限公司天津300381

针对当前地铁车站安防监控智能化欠缺的问题,提出一种基于YOLOv5的烟火检测系统,以提高火灾检测效率。本系统以YOLOv5算法实现异常情况检测,支持对烟雾和火焰的动态检测;可通过多路视频并行推理监测,提高系统监测效率。在主干网络中加入... 详细信息

针对当前地铁车站安防监控智能化欠缺的问题,提出一种基于YOLOv5的烟火检测系统,以提高火灾检测效率。本系统以YOLOv5算法实现异常情况检测,支持对烟雾和火焰的动态检测;可通过多路视频并行推理监测,提高系统监测效率。在主干网络中加入CBAM注意力机制,基于火焰动态特性,提出基于帧差法的虚检抑制算法ODF-LOOK,降低静态虚检对输出结果的影响。经过实验测试,改进后算法识别精度提高到98.9%,语音警报和云端短信报警功能效果良好,对烟火异常情况检测有效而便利。该系统对于预防火灾事故、提高安全水平具有较高的实用意义。

关键词：目标检测 YOLOv5算法烟火检测帧差法轨道交通

特发性支气管扩张伴咯血患者的介入治疗疗效及复发危险因素分析

在线全文

学校读者我要写书评

暂无评论

浙江医学 2024年第8期46卷 851-855页

作者：邓旖郭晓华胡晓钢王佳敏绍兴文理学院医学院 312000 金华市中心医院肿瘤与血管介入科

目的评估支气管动脉栓塞术治疗特发性支气管扩张伴咯血的安全性、有效性并探讨复发的危险因素。方法回顾性收集2020年1月至2023年3月金华市中心医院住院接受支气管动脉栓塞术治疗的108例特发性支气管扩张患者的临床资料,根据出院后是否... 详细信息

目的评估支气管动脉栓塞术治疗特发性支气管扩张伴咯血的安全性、有效性并探讨复发的危险因素。方法回顾性收集2020年1月至2023年3月金华市中心医院住院接受支气管动脉栓塞术治疗的108例特发性支气管扩张患者的临床资料,根据出院后是否出现二次咯血将其分为复发组和非复发组,并通过多因素Cox回归分析咯血复发的危险因素。结果108例患者均成功实施支气管动脉栓塞术,共发现403支责任血管。105例患者术后24 h止血,临床成功率为97.2%。出院后中位随访时间为13(8.0,24.8)个月,40例患者出院后咯血复发,咯血复发率为37.0%。多因素Cox回归分析显示,非首次咯血是术后复发的独立危险因素(HR=1.964,95%CI:1.018~3.792,P=0.044)。所有患者均未出现脑梗死、截瘫等严重并发症。结论支气管动脉栓塞术对于特发性支气管扩张伴咯血患者是一种安全、高效的治疗手段,非首次咯血是术后复发的独立危险因素。

关键词：支气管扩张咯血支气管动脉栓塞术非支气管性体动脉

MALE GAMETOPHYTE DEFECTIVE 2,Encoding a Sialyltransferase-like Protein,is Required for Normal Pollen Germination and Pollen Tube Growth in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2010年第9期52卷 829-843页

作者： yi deng Wei Wang Wen-Qing Li Chuan Xia Hong-Ze Liao Xue-Qin Zhang De Ye State Key-Laboratory of Pla-nt Physiology and Biochemistry College of Biological Sciences China Agricultural University Beijing 100193 China

Sialyltransferases （SlaTs） exist widely in vertebrates and play important roles in a variety of biological processes. In plants, several genes have also been identified to encode the proteins that share homology with the vertebrate SlaTs. However, very little is known about their functions in plants. Here we report the identification and characterization of a novel Arabidopsis gene, MALE GAMETOPHYTE DEFECTIVE 2 （MGP2） that encodes a sialyltransferase-like protein. MGP2 was expressed in all tissues including pollen grains and pollen tubes. The MGP2 protein was targeted to Golgi apparatus. Knockout of MGP2 significantly inhibited the pollen germination and retarded pollen tube growth in vitro and in vivo, but did not affect female gametophytic functions. These results suggest that the sialyltransferase-like protein MGP2 is important for normal pollen germination and pollen tube growth, giving a novel insight into the biological roles of the *** proteins in plants.

关键词： Plants Planting Proteins Protein products Imports Genes Vertebrates Pollen tubes Growth Germinability

Rapid sterilisation and diabetic cutaneous regeneration using cascade bio-heterojunctions through glucose oxidase-primed therapy

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第7期25卷 748-765页

作者： yi deng Xumei Ouyang Jiyu Sun Xiuyuan Shi Yunfei Li Yau Kei Chan Weizhong Yang Shaojun Peng College of Biomedical Engineering School of Chemical EngineeringSichuan UniversityChengdu610065China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu610065China Zhuhai Institute of Translational Medicine Zhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University)ZhuhaiGuangdong519000China State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041China Department of Materials Imperial College LondonSW72AZLondonUnited Kingdom Department of Biomedical Engineering The City College of the City University of New YorkNew YorkUnited States Department of Mechanical Engineering The University of Hong KongHong KongChina Department of Ophthalmology The University of Hong KongHong KongChina

The cutaneous wound in diabetic patients frequently encounters intractable pathogenic infections due to the hyperglycemia micromilieu which is conducive to bacterial growth and *** the extensive clinical use of antibiotics to treat bacterial infections,the emergence of drug-resistant and super pathogens as well as the potential side effects of antibiotics have elicited alarming challenges to public *** address this daunting concern,we devise and develop a photo-activated cascade bio-heterojunctions(C-bio-HJs)for rapid sterilization and diabetic cutaneous *** the designed C-bio-HJs,photo-generated electron-hole pairs of graphite-phase carbon nitride(g-C_(3)N_(4))are effectively separated with the marriage of molybdenum disulfide(MoS_(2)),which achieves the augmented photodynamic antibacterial ***,glucose oxidase(GOx)tethered on the bio-HJs catalyzes glucose into hydrogen peroxide(H_(2)O_(2))in diabetic wounds for starvation ***,Mo4+enables the catalysis of H_(2)O_(2)into a highly effective hydroxyl radical(⋅OH)for chemodynamic-photothermal combined antibacterial *** in vitro and in vivo results authenticate the cascading antibacterial properties and skin regeneration-promoting effects of the C-bio-HJs,which provide a facile strategy to combat diabetic wound healing through the synergistic GOx-primed dynamic therapies.

关键词： Antibacterial therapy Bio-heterojunction g-C_(3)N_(4) Rapid sterilization Tissue regeneration

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

聚乳酸材料性能改进研究进展

安徽化工 2024年第2期50卷 9-13页

作者：王培冯嘉玮邓祎慧刘雪微张帅衡水学院应用化学系河北衡水053000

聚乳酸(polylacticacid,PLA)是一种以植物资源为原料合成的聚酯,主要应用于医学、生物、环境保护等领域。随着科学技术的进步,对聚乳酸材料的性能提出了新的要求和用途,必须通过改性提高其加工与应用性能。从物理改性、化学改性方面综述... 详细信息

聚乳酸(polylacticacid,PLA)是一种以植物资源为原料合成的聚酯,主要应用于医学、生物、环境保护等领域。随着科学技术的进步,对聚乳酸材料的性能提出了新的要求和用途,必须通过改性提高其加工与应用性能。从物理改性、化学改性方面综述了PLA性能改进的研究进展。旨在保留PLA性能的优势,为拓宽PLA应用市场提供一定参考价值。

关键词：聚乳酸物理改性化学改性