检索结果-南通市图书馆

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

聚氨酯改性氨基硅烷免烫整理剂的研制和应用

印染 2007年第18期33卷 5-8页

作者：熊磊胡春燕苏开第江南大学纺织与服装学院江苏无锡214122 东华大学上海200051 深圳先进华联精细化工有限公司深圳518067

用异佛尔酮二异氰酸酯与氨基硅油反应,然后用饱和亚硫酸氢钠封端,合成出具有反应性的聚氨酯改性硅油。用改性后的氨基硅油单独整理棉织物,回复角可以提高54°,DP等级达2.5级,提高1.5级;与2D醚化树脂同浴使用,整理过后棉织物的DP达到4级... 详细信息

用异佛尔酮二异氰酸酯与氨基硅油反应,然后用饱和亚硫酸氢钠封端,合成出具有反应性的聚氨酯改性硅油。用改性后的氨基硅油单独整理棉织物,回复角可以提高54°,DP等级达2.5级,提高1.5级;与2D醚化树脂同浴使用,整理过后棉织物的DP达到4级,甲醛释放量极低,织物损伤亦很小。

关键词：耐久压烫整理整理剂氨基硅油聚氨酯改性棉织物

Correction to:Assembly-level analysis on temperature coefficient of reactivity in a graphite-moderated fuel salt reactor fueled with low-enriched uranium

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第2期35卷 234-235页

作者： Xiao-Xiao Li De-yang Cui chun-yan Zou Jian-hui Wu Xiang-Zhou Cai Jin-Gen Chen Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China CAS Innovative Academy in TMSR Energy System Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

Following publication of the original article,the authors observed that both Fig.5 and Fig.4 depict the same *** 5 was inaccurately referenced and *** correct Fig.5 is copied below:The original article has been updated.

关键词： fuel enriched reactivity

稀土固体超强酸Gd^(3+)-SO_4^(2-)/ZrO_2催化合成乙酸正丁酯

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

湿法冶金 2011年第4期30卷 344-347页

作者：胡春燕李双全江西农业大学理学院江西南昌330045 华东理工大学研究生院上海200237

采用乙酸、正丁醇为原料,以固体超强酸Gd3+-SO24-/ZrO2作为催化剂,催化合成乙酸正丁酯。用固体超强酸Gd3+-SO42-/ZrO2和SO24-/ZrO2进行催化活性对比试验,考察浸渍硫酸浓度、浸渍时间、焙烧温度对催化剂活性的影响以及原料酸醇比、反应... 详细信息

采用乙酸、正丁醇为原料,以固体超强酸Gd3+-SO24-/ZrO2作为催化剂,催化合成乙酸正丁酯。用固体超强酸Gd3+-SO42-/ZrO2和SO24-/ZrO2进行催化活性对比试验,考察浸渍硫酸浓度、浸渍时间、焙烧温度对催化剂活性的影响以及原料酸醇比、反应时间、催化剂用量对酯化率的影响,从而确定固体超强酸的最佳制备条件。试验结果表明:在反应温度105～110℃,催化剂用量1.5g,n(正丁醇)∶n(乙酸)=2.5∶1,反应时间2.5h条件下,酯化率可达98.86%;催化剂重复使用效果明显;加Gd3+的固体超强酸的催化活性明显增强。

关键词：固体超强酸乙酸正丁酯酯化催化剂

人格化交易习俗下我国存款保险制度的现实选择

在线全文

学校读者我要写书评

暂无评论

特区经济 2006年第6期 67-68页

作者：李世美胡春燕华南师范大学南海校区经济与管理系广东南海528225 桂林电子科技大学电子工程系广西桂林541004

本文采用历史制度分析方法,论述了我国由于受到人格化交易习俗文化约束,政府信用对市场信用具有重要的替代效应。存款保险制度是由政府提供的一种有别于商业保险的“准公共”保险产品。隐性存款保险制度和显性存款保险制度具有同质性,... 详细信息

本文采用历史制度分析方法,论述了我国由于受到人格化交易习俗文化约束,政府信用对市场信用具有重要的替代效应。存款保险制度是由政府提供的一种有别于商业保险的“准公共”保险产品。隐性存款保险制度和显性存款保险制度具有同质性,隐性存款保险制度是我国维持金融体系稳定的一种次优选择。所以我国暂时没有必要引入显性的存款保险制度。

关键词：人格化交易习俗显性存款保险制度 “准公共”保险产品

Multi-exit self-distillation with appropriate teachers

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2024年第4期25卷 585-599页

作者： Wujie SUN Defang CHEN Can WANG Deshi YE yan FENG chun CHEN College of Computer Science and Technology Zhejiang UniversityHangzhou 310000China

Multi-exit architecture allows early-stop inference to reduce computational cost,which can be used in resource-constrained *** works combine the multi-exit architecture with self-distillation to simultaneously achieve high efficiency and decent performance at different network ***,existing methods mainly transfer knowledge from deep exits or a single ensemble to guide all exits,without considering that inappropriate learning gaps between students and teachers may degrade the model performance,especially in shallow *** address this issue,we propose Multi-exit self-distillation with Appropriate TEachers(MATE)to provide diverse and appropriate teacher knowledge for each *** MATE,multiple ensemble teachers are obtained from all exits with different trainable *** exit subsequently receives knowledge from all teachers,while focusing mainly on its primary teacher to keep an appropriate gap for efficient knowledge *** this way,MATE achieves diversity in knowledge distillation while ensuring learning *** results on CIFAR-100,TinyImageNet,and three fine-grained datasets demonstrate that MATE consistently outperforms state-of-the-art multi-exit self-distillation methods with various network architectures.

关键词： Multi-exit architecture Knowledge distillation Learning gap

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

带时变时滞细胞神经网络的全局渐近稳定性

重庆交通大学学报（自然科学版） 2010年第1期29卷 151-156页

作者：胡春燕杨德刚胡志强重庆师范大学数学与计算机科学学院重庆400047 重庆交通大学重庆400074

研究了带时变时滞的细胞神经网络的全局渐近稳定性问题,给出了带时变时滞细胞神经网络平衡点全局渐近稳定的新充分判定准则。首先,提出所研究的时滞细胞神经网络模型、系统激活函数所需满足的条件及需要的引理。然后,将所研究的系统通... 详细信息

研究了带时变时滞的细胞神经网络的全局渐近稳定性问题,给出了带时变时滞细胞神经网络平衡点全局渐近稳定的新充分判定准则。首先,提出所研究的时滞细胞神经网络模型、系统激活函数所需满足的条件及需要的引理。然后,将所研究的系统通过一个等式进行线性变换,在定义一个与系统相关的映射操作基础上,基于Lya-punov-Krasovskii稳定性定理和线性矩阵不等式技术来讨论时滞细胞神经网络的全局渐近稳定性。所得条件是时滞相关的。最后,用一个数值例子验证所得的稳定性条件是有效的。

关键词：细胞神经网络时变时滞稳定性线性矩阵不等式 Lyapunov—Krasovskii泛函

Mechanical and damping performances of TPMS lattice metamaterials fabricated by laser powder bed fusion

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第4期21卷 327-333页

作者： yan-peng Wei huai-qian Li Jing-jing Han Ying-chun Ma Hao-ran Zhou Jing-chang Cheng Jian Shi Zhi-quan Miao Bo Yu Feng Lin National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China

Lattice metamaterials based on three-period minimum surface(TPMS)are an effective means to achieve lightweight and high-strength materials which are widely used in various fields such as aerospace and ***,its vibration and noise reduction,and damping properties have not been fully ***,in this study,the TPMS structures with parameterization were designed by the method of surface migration,and the TPMS structures with high forming quality was manufactured by laser powder bed fusion(LPBF).The mechanical properties and energy absorption characteristics of the beam and TPMS structures were studied and compared by quasi-static *** modal shapes of the beam lattice structures and TPMS structures were obtained by the free modal analysis,and the damping properties of two structures were obtained by modal *** the two structures after heat treatment with the same porosity of 70%,the yield strength of the beam lattice structure reaches 40.76 MPa,elastic modulus is 20.38 GPa,the energy absorption value is 32.23 MJ·m^(-3),the damping ratio is 0.52%.The yield strength,elastic modulus,energy absorption value,and damping ratio of the TPMS structure are 50.74 MPa,25.37 GPa,47.34 MJ·m^(-3),and 0.99%,*** results show that TPMS structures exhibit more excellent mechanical properties and energy absorption,better damping performance,and obvious advantages in structural load and vibration and noise reduction compared with the beam lattice structures under the same porosity.

关键词： lattice metamaterials TPMS energy absorption damping laser powder bed fusion

Charge regulation by ferromagnetic metal/LiF spin-polarized interface for high-performance Li metal anodes

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 995-1005页

作者： Ming-yang Feng Shuang Zhou Yi-Fang Zhang Ya-Ping Wang chun-yan Fu Jian-Wen Li Yuan-Lang Wan Zhi-Jia Zhang Yong Jiang An-Qiang Pan State Key Laboratory of Powder Metallurgy School of Materials Science and EngineeringCentral South UniversityChangsha410083China State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Advanced Fibers and Energy StorageSchool of Material Science and EngineeringTiangong UniversityTianjin300387China School of Materials Science and Engineering Hebei University of TechnologyTianjin300130China

The interfacial characteristics of the Li metal anode(LMA)play a crucial role in its overall *** various materials being applied to modify the interface,a comprehensive understanding of their specific mechanisms remains to be ***,we have prepared carbon cloth(CC)frameworks with their surfaces modified using ferromagnetic metal/LiF heterogeneous films(T^(M)-LiF-CC)as the substrate for LMA,which exhibit superior electrochemical *** ferromagnetic Co as a representative example,our study demonstrates that the enhanced performance of Co-LiF-CC,compared to bare CC,is attributed to the spinpolarized interface contributed by the Co/LiF *** and LiF play individual roles in redistributing electrons and Li^(+)to promote homogeneous Li *** nanoparticles play a crucial role in generating strong surface capacitance by storing electrons in spin-split bands,while LiF,with low surface diffusion barriers,ensures fast transportation of Li^(+).The Co-LiF-CC@Li electrodes deliver long lives of 7400 and 3600 h at 1 and 2 mA·cm^(-2)in symmetric cells,respectively;moreover,they enable full batteries with high and durable capacities,particularly when the N/P ratios are low(3.3 or even 1.7).

关键词： Lithium metal anode Interfacial charge Ferromagnetic metal Lithium fluoride Spin polarization

Gut microbiota dysbiosis contributes toα-synuclein-related pathology associated with C/EBPβ/AEP signaling activation in a mouse model of Parkinson’s disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第9期19卷 2081-2088页

作者： Xiaoli Fang Sha Liu Bilal Muhammad Mingxuan Zheng Xing Ge yan Xu Shu Kan yang Zhang Yinghua Yu Kuiyang Zheng Deqin Geng chun-Feng Liu Department of Neurology and Clinical Research Center of Neurological Disease The Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Jiangsu Key Laboratory of Immunity and Metabolism Department of Pathogen Biology and ImmunologyXuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Neurology Xuzhou Central HospitalXuzhouJiangsu ProvinceChina Jiangsu Key Laboratory of Neuropsychiatric Disease and Institute of Neuroscience Soochow UniversitySuzhouJiangsu ProvinceChina

Parkinson’s disease is a neurodegenerative disease characterized by motor and gastrointestinal *** dysfunction can precede the onset of motor symptoms by several *** microbiota dysbiosis is involved in the pathogenesis of Parkinson’s disease,whether it plays a causal role in motor dysfunction,and the mechanism underlying this potential effect,remain ***/enhancer binding proteinβ/asparagine endopeptidase(C/EBPβ/AEP)signaling,activated by bacterial endotoxin,can promoteα-synuclein transcription,thereby contributing to Parkinson’s disease *** this study,we aimed to investigate the role of the gut microbiota in C/EBPβ/AEP signaling,α-synuclein-related pathology,and motor symptoms using a rotenone-induced mouse model of Parkinson’s disease combined with antibiotic-induced microbiome depletion and fecal microbiota *** found that rotenone administration resulted in gut microbiota dysbiosis and perturbation of the intestinal barrier,as well as activation of the C/EBP/AEP pathway,α-synuclein aggregation,and tyrosine hydroxylase-positive neuron loss in the substantia nigra in mice with motor ***,treatment with rotenone did not have any of these adverse effects in mice whose gut microbiota was depleted by pretreatment with ***,we found that transplanting gut microbiota derived from mice treated with rotenone induced motor deficits,intestinal inflammation,and *** of fecal microbiota from healthy control mice alleviated rotenone-induced motor deficits,intestinal inflammation,endotoxemia,and intestinal barrier *** results highlight the vital role that gut microbiota dysbiosis plays in inducing motor deficits,C/EBPβ/AEP signaling activation,andα-synuclein-related pathology in a rotenone-induced mouse model of Parkinson’s ***,our findings suggest that supplementing with healthy microbiota may be a safe and effective treatment that c

关键词： C/EBP/AEP signaling pathway endotoxemia fecal microbiota transplantation intestinal barrier intestinal inflammation microbiota-gut-brain axis Parkinson’s disease