检索结果-南通市图书馆

STUDIES OF THE DYNAMIC BEHAVIORS OF A CLASS OF LEARNING ASSOCIATIVE NEURAL NETWORKS

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 1994年第3期11卷 208-216页

作者：曾黄麟 Sichuan Institute of Light Industry & Chemical Technology Zigong 643033

This paper investigates exponential stability and trajectory bounds of motions of equilibria of a class of associative neural networks under structural variations as learning a new pattern. Some conditions for the possible maximum estimate of the domain of structural exponential stability are determined. The filtering ability of the associative neural networks contaminated by input noises is analyzed. Employing the obtained results as valuable guidelines, a systematic synthesis procedure for constructing a dynamical associative neural network that stores a given set of vectors as the stable equilibrium points as well as learns new patterns can be developed. Some new concepts defined here are expected to be the instruction for further studies of learning associative neural networks.

关键词： Associative neural network Learning algorithm Dynamic characteristics Structure exponential stability

(5,7,7,12,14,14-六甲基-1,4,8,11-四氮杂环十四-4,11-二烯)合镍双(O,O'-二烃基二硫代磷酸酯)的合成与研究

在线全文

学校读者我要写书评

暂无评论

高等学校化学学报 1998年第1期19卷 74-77页

作者：谢斌吴士业四川轻化工学院基础部自贡643033 四川轻化工学院轻工系自贡643033

合成了4个含四氮杂大环配体和O，O＇-二烃基二硫代磷酸根的镍配合物［Ni（hmtade）·｛SSP（OR）2｝2］（hmtade＝5，7，7，12，14，14-六甲基-1，4，8，11-四氮杂环十四-4，11-二烯；R＝C6H5，2-naphthyl，C6H5CH2CH2，cyclohexyl），... 详细信息

合成了4个含四氮杂大环配体和O，O＇-二烃基二硫代磷酸根的镍配合物［Ni（hmtade）·｛SSP（OR）2｝2］（hmtade＝5，7，7，12，14，14-六甲基-1，4，8，11-四氮杂环十四-4，11-二烯；R＝C6H5，2-naphthyl，C6H5CH2CH2，cyclohexyl），用元素分析、摩尔电导、红外光谱和1HNMR、31PNMR、电子光谱及差热分析对其结构进行了表征．研究结果表明：配合物均为非电解质，O，O＇-二烃基二硫代磷酸根作为单齿配体对镍中心配位．对四氮杂大环的构型进行了讨论．

关键词：四氮杂大环二烃基二硫代磷酸酯镍配合物

STABILITY CONTROL AND ANALYSIS OF ASYMMETRIC CONTINUOUS NEURAL NETWORKS

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 1992年第2期9卷 97-104页

作者：曾黄麟虞厥邦 Sichuan Institute of Light Industry and Chemical Technology Zigong 643033 University of Electronic Science Technology of China Chengdu 610054

A new method for analyzing dynamics of continuous neural networks is proposed,and the necessary convergence conditions for a class of associative networks are obtained. Basedon the stability criterion and the equations of equilibrium set of the network, synthesis of aclass of associative neural networks is given. The stability control model of asymmetric unstablenetworks is suggested, which is also a valid way for optimization and dynamic control of stableneural networks.

关键词： Continuous neural networks Asymmetric interconnection Asymptotically stable Stability control

Mechanism and kinetics for scavenging superoxide anion by progesterone

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2001年第2期46卷 117-121页

作者： SONG Junfeng SHAO Yong GUO Wei Institute of Electroanalytical Chemistry Northwest UniversityXi’an 710069China Department of Merterial and Chemical Engineering Sichuan Institude of Light Industry and Chemical TechnologyZigong 643033China

The chemical reaction of progesterone with su-peroxide anion O2- in 0.1 mol/L NaHCO3 medium is studied by polarography. Differing from the indirect inhibition of O2- generation by synthesized glucocorticoids in mecha-nism, the function that progesterone scavenges O2- is as-cribed to that O2- directly oxidizes the C =C double bond conjugated with the carbonyl moiety of progesterone mole-cule to a free radical, and then is reduced to H2O2. The result obtained in this work gives new evidence for biomedical research. The equation of rate constant of the oxidization reaction is deduced, and the apparent rate constant obtained is308 L·mol-1·s-1.

关键词： superoxide progesterone scavenging kinetics anti-oxidation.

在线全文

学校读者我要写书评

暂无评论

共面平行微带传输线间的静电力(英文)

电子科技大学学报 2000年第1期29卷 45-48页

作者：向裕民四川轻化工学院基础部!自贡643033

将两共面平行荷电微带传输线在横截面内的场区用保形映射变换为矩形内域，从而获得单位纵长传输线的电容和静电能量。以虚功原理计算荷电微带线间的静电力，图示出规范力随系统几何参数的变化，并分析一些典型特例，其中包括荷电弦、窄... 详细信息

将两共面平行荷电微带传输线在横截面内的场区用保形映射变换为矩形内域，从而获得单位纵长传输线的电容和静电能量。以虚功原理计算荷电微带线间的静电力，图示出规范力随系统几何参数的变化，并分析一些典型特例，其中包括荷电弦、窄带和宽带间的静电力。

关键词：传输线保形映射虚功原理静电力

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

辣椒油树脂微囊化的研究

食品科学 1997年第11期18卷 27-30页

作者：向云峰刘达玉杨佳祝敬璞程敏四川轻化工学院 643033

用经连续渗漉抽提的辣椒油树脂为心材，以食用胶为壁材，经均质、乳化、喷雾干燥制成辣椒油树脂微胶囊。其主要技术参数：心材包埋率92．6％，收得率91．5％，含水率4．0％，辣椒素含量0．38％（W／W），乙醇残留量4．0mg／kg。

关键词：辣椒油树脂微胶囊

聚苯胺包裹的金纳米粒子的合成和表征及初步应用

在线全文

学校读者我要写书评

暂无评论

化学学报 2006年第8期64卷 733-737页

作者：郑国祥邵勇徐斌四川理工学院化学系自贡643033

用苯胺作还原剂还原氯金酸合成了金纳米结构.TEM实验表明,苯胺还原氯金酸能生成苯胺齐聚物或其聚合物包裹的金球形纳米粒子.XPS分析表明,金纳米粒子包覆的聚合物层带正电荷.该纳米粒子能用于电极表面纳米结构组装及氧化还原性的生物大... 详细信息

用苯胺作还原剂还原氯金酸合成了金纳米结构.TEM实验表明,苯胺还原氯金酸能生成苯胺齐聚物或其聚合物包裹的金球形纳米粒子.XPS分析表明,金纳米粒子包覆的聚合物层带正电荷.该纳米粒子能用于电极表面纳米结构组装及氧化还原性的生物大分子的电化学研究,实现了超氧化物歧化酶(SOD)在这种带正电荷的金纳米粒子表面的直接电子转移.

关键词：金纳米粒子导电聚合物苯胺超氧化物歧化酶直接电化学

Preparation of Pt/K_2La_2Ti_3O_(10) and its photo-catalytic activity for hydrogen evolution from methanol water solution

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2006年第2期49卷 162-168页

作者： CUI Wenquan1,3, LIU Li2, FENG Liangrong1, XU Chenghua1, LI Zijian1, Lü Shaojie1 & QIU Fali1 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China 2. Chemistry Department, Sichuan University of Science & Engineering, Zigong 643033, China 3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China Correspondence should be addressed to Qiu Fali 1. Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China 3. Graduate School of the Chinese Academy of Sciences Beijing 100039 China 2. Chemistry Department Sichuan University of Science & Engineering Zigong 643033 China

A layered perovskite-type oxide K2La2Ti3O10 was prepared with high-temperature solid-state reaction, and characterized with X-ray diffraction (XRD) and ultraviolet-visible diffuse re-flectance spectroscopy (UV-Vis DRS). Platinum was loaded onto K2La2Ti3O10 as a co-catalyst with different methods. The dispersion of platinum on K2La2Ti3O10 was determined with HOT method. The photocatalytic activity of Pt/K2La2Ti3O10 was studied. This catalyst showed much higher activity in hydrogen evolution reaction than Ni/K2La2Ti3O10. The effects of different amounts of loaded platinum and several preparation methods were evaluated. The best achieved hydrogen evolution rate was 233.88 μmol·h?1 by Pt(2%)/K2La2Ti3O10. A possible band structure and mechanism were discussed based on the results.

关键词： photocatalysis hydrogen platinum K_2La_2Ti_3O_(10) support

在线全文

学校读者我要写书评

暂无评论

对浮选脱墨工艺改进的尝试与研究

中国造纸 2002年第5期21卷 9-12页

作者：李可彬李文俊颜杰杨玲四川轻化工学院四川自贡643033

尝试设计了一种新装置,从设计装置中将表面活性剂以喷雾方式加入浮选脱墨塔(或柱),从理论和实践上探讨了这种加入方式对浮选脱墨过程中的泡沫稳定性、泡沫的流体特性、油墨去除率、纤维污染、纤维和水的损失等因素的影响。实验结果表明... 详细信息

尝试设计了一种新装置,从设计装置中将表面活性剂以喷雾方式加入浮选脱墨塔(或柱),从理论和实践上探讨了这种加入方式对浮选脱墨过程中的泡沫稳定性、泡沫的流体特性、油墨去除率、纤维污染、纤维和水的损失等因素的影响。实验结果表明,表面活性剂喷雾脱墨方法在保持与传统浮选脱墨方法相同脱墨效果的条件下,可大量减少纤维及水的损失,减少表面活性剂用量,同时,改善了表面活性剂对纤维的污染,而且还可根据不同废纸来源和性质,有效地控制喷雾状况和泡沫层的稳定性。

关键词：浮选脱墨工艺改进废纸回收脱墨装置表面活性剂造纸