检索结果-南通市图书馆

A Low Cost, Green Sustainable and Biodegradable Biomass-based Fluorine-free Water and Oil Repellent

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 Polymer Science 2024年第4期42卷 480-491页

作者： Zhi-Wei Shen Shu-feng Hu Chen Zeng Wei-qing Kong Mei-Fang zhu State Key Laboratory for Modification of Chemical Fibers&Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China State Key Laboratory of Pulp and Paper Engineering School of Light Industry and EngineeringSouth China University of TechnologyGuangzhou510630China

With the global ban on plastics intensifying, the substitution of plastic with paper has garnered increasing attention. However, the inadequate water and oil repellency of pulp molding hinders its practical applications. Currently, the common method to enhance the oil and water repellency of pulp molding is by adding fluorinated water and oil repellents. Nevertheless, fluorinated compounds are environmentally and physiologically harmful. Therefore, the development of fluorine-free, water and oil repellent alternatives is crucial. In this study, chitosan and stearic acid were utilized as the first and second layers of the oil and water repellent coatings, respectively. The coated samples exhibited favorable water repellency, with a water contact angle of 116.4°, and excellent oil repellency, achieving a 12/12 rating on the kit scale. Importantly, the samples did not exhibit any leakage after being soaked in hot water and hot oil at 95±5℃ for 30 min, demonstrating remarkable performance as a barrier against hot water and oil. Moreover, the coated samples displayed outstanding mechanical properties, thermal stability, biodegradability, and recyclability. The approach presented in this study is simple, cost-effective, environmentally friendly, and represents a promising technique for producing fluoride-free, oil-and water-resistant pulp molding products.

关键词： Biomass Fluoride-free Oil-andwater-resistant Plasticfree

在线全文

学校读者我要写书评

暂无评论

缺级粗粒土管涌类型的判别方法

岩土力学 2009年第8期30卷 2249-2253页

作者：陈群刘黎何昌荣朱分清四川大学山区河流开发与保护国家重点实验室四川大学水利水电学院成都610065 中国科学院成都山地灾害与环境研究所成都610041

利用大型渗透变形仪,对不同最大粒径和细粒含量的缺级粗粒土的渗透破坏特性进行了系统的试验研究。研究结果表明,缺级粗粒土在细料含量小于30%的情况下都发生管涌型渗透破坏,基本符合前人提出的判别流土和管涌的准则。管涌破坏的类型可... 详细信息

利用大型渗透变形仪,对不同最大粒径和细粒含量的缺级粗粒土的渗透破坏特性进行了系统的试验研究。研究结果表明,缺级粗粒土在细料含量小于30%的情况下都发生管涌型渗透破坏,基本符合前人提出的判别流土和管涌的准则。管涌破坏的类型可划分为发展性管涌和非发展性管涌两种,采用刘杰和康德拉且夫对发展性和非发展性管涌的判别方法都不能区分本次试验的管涌破坏类型。在康德拉且夫提出的判别粗粒土管涌类型的方法的基础上,考虑细料对粗料孔隙的填充程度及试样中缺级颗粒百分含量的影响,建立了缺级粗粒土管涌类型的判别式,为缺级粗粒土管涌类型的判别提供了新的思路和方法。

关键词：粗粒土渗透变形试验渗透破坏管涌

Realtime observation of “spring fracture” like AlGaN/GaN HEMT failure under bias

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第1期67卷 303-305页

作者： qing zhu Zhenni WANG Yuxiang WEI Ling YANG Xiaoli LU Jiejie zhu Peng ZHONG Yimin LEI Xiaohua MA School of Microelectronics Xidian University State Key Discipline Laboratory of Wide Bandgap Semiconductor Technology Xidian University School of Advanced Materials and Nanotechnology Xidian University

The AlGaN/GaN HEMTs have been considered promising candidates for high-frequency and high-power applications,while the reliability issues greatly limit the commercialization of AlGaN/GaN HEMTs. In the past, the research on the reliability of devices was often based on Raman spectroscopy, cathodoluminescence, and TEM after failure of the devices, which is often considered to be the laborious and complicated “archaeological” kind of analysis [1].

关键词：

MTTSNet:Military time-sensitive targets stealth network via real-time mask generation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第3期33卷 601-612页

作者： Siyu Wang Xiaogang Yang Ruitao Lu Zhengjie zhu Fangjia Lian qing-ge Li Jiwei Fan PLA Rocket Force University of Engineering Xi'an 710025China

The automatic stealth task of military time-sensitive targets plays a crucial role in maintaining national military security and mastering battlefield dynamics in military *** propose a novel Military Time-sensitive Targets Stealth Network via Real-time Mask Generation(MTTSNet).According to our knowledge,this is the first technology to automatically remove military targets in real-time from *** critical steps of MTTSNet are as follows:First,we designed a real-time mask generation network based on the encoder-decoder framework,combined with the domain expansion structure,to effectively extract mask ***,the ASPP structure in the encoder could achieve advanced semantic feature *** decoder stacked high-dimensional information with low-dimensional information to obtain an effective mask ***,the domain expansion module guided the adaptive expansion of mask ***,a context adversarial generation network based on gated convolution was constructed to achieve background restoration of mask positions in the original *** addition,our method worked in an end-to-end manner.A particular semantic segmentation dataset for military time-sensitive targets has been constructed,called the Military Time-sensitive Target Masking Dataset(MTMD).The MTMD dataset experiment successfully demonstrated that this method could create a mask that completely occludes the target and that the target could be hidden in real time using this *** demonstrated the concealment performance of our proposed method by comparing it to a number of well-known and highly optimized baselines.

关键词： Deep learning Military application Targets stealth network Mask generation Generative adversarial network

GLP药物安全性评价中组织病理学检查流程的探讨

在线全文

学校读者我要写书评

暂无评论

中国新药杂志 2016年第9期25卷 981-984页

作者：孙昌华祝清芬山东省食品药品检验研究院药物安全评价中心济南250101

临床前安全性评价的主要目的是提供新药对人类健康危害程度的科学依据,预测上市新药对人类健康的危害程度。临床前安全性评价的质量直接关系到人类用药的安全,药品非临床研究质量管理规范(good laboratory practice of drug,GLP)的建立... 详细信息

临床前安全性评价的主要目的是提供新药对人类健康危害程度的科学依据,预测上市新药对人类健康的危害程度。临床前安全性评价的质量直接关系到人类用药的安全,药品非临床研究质量管理规范(good laboratory practice of drug,GLP)的建立就是为了确保实验资料的真实性、完整性及可靠性。毒性病理学研究是药物安全性评价中最重要的研究内容之一,也是临床前安全性评价工作中最基本的环节之一,所以需要建立健全规范、高效的组织病理学检查流程,以促进病理部门的规范化建设。

关键词：药品非临床研究质量管理规范安全性评价组织病理学

Analyses on an electronic voltage transformer's failure by its resonance with very fast transient overvoltage and suppression

在线全文

学校读者我要写书评

暂无评论

High Voltage 2024年第1期9卷 150-162页

作者： Ruoyu Han Houda zhu qing Chen Hongbin Li Yue Tong Linshan Han Yang Jiao School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhanChina China Electric Power Research Institute WuhanChina School of Artificial Intelligence and Automation Huazhong University of Science and TechnologyWuhanChina

As voltage measuring devices are widely used in the high voltage power system with a primary-secondary-fusion structure,electronic voltage transformers are directly connected to the primary conductor and would face much more serious electromagnetic environments than general secondary *** a result,they would still experience failures even when general protection measures are adopted to suppress overvoltages'*** address this issue,an innovative method is proposed after analyses are conducted on the resonance between a transformer and an *** this method,an air-cored coil is installed in a transformer to artificially shift its natural frequency and to dodge the high-frequency dominant component of a transient overvoltage,avoiding the aforementioned resonance and suppressing the secondary *** addition,simulations and laboratory tests are conducted to prove this method's validity.

关键词： transient resonance mentioned

Advanced organic electrode materials for aqueous rechargeable batteries

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

Science China Chemistry 2024年第1期67卷 137-164页

作者： Gaojing Yang Yaxun zhu Qi Zhao Zhimeng Hao Yong Lu qing Zhao Jun Chen Frontiers Science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

Organic electrode materials take advantages of potentially sustainable production and structural tunability compared with present commercial inorganic electrode ***,their applications in traditional rechargeable batteries with nonaqueous electrolytes suffer from the premature failure and safety *** comparison,aqueous rechargeable batteries based on organic electrode materials have received extensive attentions in recent years for low-cost and sustainable energy storage systems due to their inherent *** review aims to provide a comprehensive summary on the recent progress in advanced organic electrode materials for aqueous rechargeable *** start from the overview of working principles and general design strategies of organic electrode materials in aqueous rechargeable *** the research advances of organic electrode materials in various aqueous rechargeable batteries are highlighted in terms of charge carriers(monovalent ions,multivalent ions,and anions).We emphasized the characteristics of organic electrode materials in various charge ***,the critical challenges and future efforts of aqueous organic rechargeable batteries are *** organic electrode materials with better electronic conductivity and fast reaction kinetics are still needed to build advanced aqueous batteries for commercial applications.

关键词： organic electrode materials aqueous batteries organic batteries rechargeable batteries

《中国药典》药用辅料细菌内毒素标准设定的思考

在线全文

学校读者我要写书评

暂无评论

中国药学杂志 2023年第7期58卷 643-648页

作者：祝清芬张娟朱冉耿雪刘瑞陈蕾山东省食品药品检验研究院国家药监局仿制药研究与评价重点实验室山东省仿制药一致性评价工程技术研究中心济南250101 国家药典委员会北京100061

目的探讨我国药用辅料细菌内毒素质量控制和标准研究的指导原则及《中国药典》标准收载格式。方法通过调研我国现行药用辅料细菌内毒素质量控制相关标准,结合国际相关进展等,分析存在问题,提出适合我国国情的药用辅料细菌内毒素质量... 详细信息

目的探讨我国药用辅料细菌内毒素质量控制和标准研究的指导原则及《中国药典》标准收载格式。方法通过调研我国现行药用辅料细菌内毒素质量控制相关标准,结合国际相关进展等,分析存在问题,提出适合我国国情的药用辅料细菌内毒素质量控制和标准研究的指导原则、标准收载格式。结果本研究结合药用辅料的特点和使用途径,对药用辅料细菌内毒素标准设定、限值计算、生产过程中药用辅料细菌内毒素控制策略等进行探讨,同时给出《中国药典》药用辅料细菌内毒素标准收载格式建议。结论提出了药用辅料细菌内毒素质量控制和标准研究的指导性意见和规范性要求,有助于在我国药品与药用原辅料和包装材料关联审批的制度下,完善药用辅料质量标准体系,确保制剂安全。

关键词：《中国药典》药用辅料质量标准细菌内毒素

Influence of filler characteristics on particle removal in fluid catalytic cracking slurry under an alternating electric field

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第3期21卷 2102-2111页

作者： Qiang Li Hui-Zhen Yang Can Yang qing-zhu Qiu Wei-Wei Xu Zhao-Zeng Liu College of New Energy China University of Petroleum(East China)Qingdao266580ShandongChina

The characteristics of the packing material under an alternating electric field are an important factor in the removal of FCCS *** this study,the electric field distribution of a separation unit consisting of packed spheres under an alternating electric field is simulated,and the movement mechanism of catalyst particles is ***"effective contact point"model is derived to predict the adsorption of filler contact points on catalyst particles under the alternating electric field,and the model is validated by simulations and *** numerical calculation and experimental results indicate that the electrical properties of the filler spheres,the filler angleθ,and the frequency f of the alternating electric field affect the adsorption of catalyst *** the frequency of the electric field increases,the particle removal efficiency of the high-conductivity filler(silicon carbide)increases and then settles,and the separation efficiency of the low-conductivity filler(glass,zirconia)is not sensitive to the change in electric field frequency.

关键词： Fluid catalyticcracking slurry(FCCS) Particle AC electric field Fillers Removal