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Eco-friendly synthesis of 2-substituted-2,3-dihydro-4(1H)-quinazolinones in water

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Chinese Chemical Letters 2011年第4期22卷 427-430页

作者： Min Wang Ting Ting Zhang zhi guo song College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Centerfor Science & Technology Experiment Bohai University Jinzhou 121000 China

2-Substituted-2,3-dihydro-4（1H）-quinazolinones were synthesized in high yield by condensation of 2-anthranilamide with aromatic aldehydes or ketones in refluxing water without *** protocol has advantages of high yie... 详细信息

关键词： 2 3-Dihydro-4(1H)-quinazolinone 2-Anthranilamide Aldehydes Ketones Synthesis in water

Copper methanesulfonate-acetic acid as a novel catalytic system for tetrahydropyranylation of alcohols and phenols

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Chinese Chemical Letters 2007年第7期18卷 799-802页

作者： Min Wang zhi guo song Hong Gong Heng Jiang College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Center for Science ＆ Technology Experiment Bohai University Jinzhou 121000 China School of Petrochemical Engineering Liaoning Shihua University Fushun 113001 China

A synergistic catalytic effect between copper methanesulfonate and acetic acid in tetrahydropyranylation of alcohols and phenol at room temperature under solvent free condition has been described. Both alcohols （primary, secondary and tertiary） and phenols reacted with 3,4-dihydro-2H-pyran smoothly to afford the corresponding tetrahydropyranyl ethers in good yields.

关键词： Tetrahydropyranylation Synergistic effect Copper methanesulfonate Acetic acid

Acetic acid assisted cobalt methanesulfonate catalysed chemoselective diacetylation of aldehydes

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Chinese Chemical Letters 2008年第8期19卷 897-900页

Cobalt methanesulfonate in combination with acetic acid catalysed the chemoselective diacetylation of aldehyde with acetic anhydride at room temperature under solvent free conditions. After reaction, cobalt methanesul... 详细信息

关键词： Gem-diacetate Aldehyde Acetic anhydride Cobalt methanesulfonate Acetic acid

Ferrous methanesulfonate as an efficient and recyclable catalyst for chemoselective synthesis of 1,1-diacetate from aldehydes

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Chinese Chemical Letters 2009年第9期20卷 1034-1038页

作者： Min Wang Gui Fu Tian zhi guo song Heng Jiang College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Center for Science & Technology Experiment OBohai UniversityJinzhou 121000 China Liaoning Shihua University Fushun 113001 China

Ferrous methanesulfonate catalysing the conversion of aromatic, heteroaromatic, unsaturated, and aliphatic aldehydes to 1,1- diacetates at room temperature under solvent-free condition has been developed. The catalytic activity of seventeen metal methanesulfonates was compared under the same condition, ferrous methanesufonate proved to be the best. It can be easily recovered and reused for several times without distinct deterioration in catalytic activity. During the competitive protection between a ketone and an aldehyde group with Ac20, 1,1-diacetate formed exclusively with the aldehyde group. 2009 Min Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： 1,1-Diacetate Aldehyde Chemoselectivity Reusability

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全局参数估计的水下目标偏振复原方法

光学精密工程 2018年第7期26卷 1621-1632页

作者：范之国宋强代晴晴闫羽合肥工业大学计算机与信息学院安徽合肥230061

水体介质对光的吸收和散射是导致水下成像退化的两大主要影响因素。针对水下目标成像,本文提出了一种全局参数估计的水下目标偏振复原方法,利用构建的精简水下目标偏振重构模型,通过自动估计全局最优偏振信息重构参数,复原出水下目标图... 详细信息

水体介质对光的吸收和散射是导致水下成像退化的两大主要影响因素。针对水下目标成像,本文提出了一种全局参数估计的水下目标偏振复原方法,利用构建的精简水下目标偏振重构模型,通过自动估计全局最优偏振信息重构参数,复原出水下目标图像,降低水体对图像质量的影响。在估计重构参数的过程中,首先,采用偏振中值滤波方法和基于亮原色原理的方法,分别估算水下背景光偏振度信息和无穷远处水下背景光强值;再利用基于最小互信息原则对估计的背景光偏振度信息进行优化;然后采用水下目标偏振图像增强算法将得到的水下目标重构图进行细节增强处理,最终获得复原后的水下目标辐射信息图。实验结果表明,在性能评价指标方面,相较于水下原图和其他水下复原方法处理图,利用本文方法处理后所得的图像增强测量值EME平均提高了120%,图像质量得到了明显的改善。该方法解决了人工取景估计参数不佳的问题,提高了复原目标图像的对比度,可以用于浑浊水下的目标探测与识别。

关键词：偏振成像水下目标成像偏振增强最小互信息图像复原

姜黄素对肝癌HepG2细胞和肝脏正常细胞L—02细胞的生长抑制作用及其机制

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中华实验外科杂志 2012年第5期29卷 851-853页

作者：郭志松邵换璋薛飞卢创新河南省人民医院中心重症医学科郑州450003 河南省人民医院肝胆外科郑州450003 河南省人民医院肿瘤内科郑州450003

目的观察姜黄素对肝癌HepG2细胞和肝脏正常L-02细胞的生长抑制作用，探讨其抗肿瘤的作用和机制。方法贴壁法培养HepG2细胞和L-02细胞，噻唑蓝（MTF）比色法分析姜黄素对细胞生长的抑制率，流式细胞仪（FACS）检测细胞周期及凋亡，免疫... 详细信息

目的观察姜黄素对肝癌HepG2细胞和肝脏正常L-02细胞的生长抑制作用，探讨其抗肿瘤的作用和机制。方法贴壁法培养HepG2细胞和L-02细胞，噻唑蓝（MTF）比色法分析姜黄素对细胞生长的抑制率，流式细胞仪（FACS）检测细胞周期及凋亡，免疫细胞化学及Westernblot技术检测半胱氨酸．天冬氨酸蛋白酶（Caspase）-3、Caspase-8、Caspase-9、死亡受体5（DR5）、B淋巴细胞／白血病-2（bcl-2）和bax蛋白的表达。结果姜黄素在100mg／L浓度下，对HepG2细胞生长抑制率可达84％，凋亡率为25．89％，而诱导正常L-02细胞的凋亡率为10．10％，阻滞HepG2细胞周期于G1期，此过程中Caspase-3、Caspase-9和Caspase_8被激活，DR5蛋白表达上升，bcl-2／bax蛋白表达比率下降。结论姜黄素能够选择性杀伤HepG2细胞，并通过内源性和外源性两条通路促其凋亡。

关键词：姜黄素 HepG2细胞凋亡半胱氨酸-天冬氨酸蛋白酶

Efficient Syntheses of Artificial Nucleases Containing di-[12]aneN3 Ligating Units Through Click Reactions

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Efficient Syntheses of Artificial Nucleases Containing di-[1...

Polarization-encoded neural networks with simplified grating patch

大环化学和超分子化学的新发展——当前学科交叉的一个重要桥梁——中国化学会全国第十五届大环化学暨第七届超分子化学学术讨论会

作者： guo zhi-Fo song Yang CHEN Hua-Long LU Zhong-Lin~* (College of Chemistry,Beijing Normal University,Xinjiekouwai Street 19,Beijing 100875,PR China)

The development of artificial nucleases capable of mimicking the action of nature enzymes is a long-standing goal in bioorganic *** studies will offer many applications,such as in understanding the chemistry of the na... 详细信息

关键词： artificial nucleases click reactions di-aneN3

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Science China Technological Sciences 2025年

作者： Chengyan ZHONG Xiang WANG Lingfei LI Yuanchi CUI Lei XIAO Dawei song Junxiong guo Wen HUANG Yufeng guo Yu LIU College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology College of Integrated Circuits Hangzhou Global Scientific and Technological Innovation Centre Zhejiang University Nanjing Mumusili Technology Co. LTD School of Integrated Circuits Tsinghua University Institute of Advanced Study School of Electronic Information and Electrical Engineering Chengdu University State Key Laboratory of Electronic Thin Films and Integrated Devices School of Integrated Circuit Science and EngineeringUniversity of Electronic Science and Technology of China

Optical neural networks (ONNs) offer a promising solution for high-performance, energy-efficient artificial intelligence hardware by leveraging the parallelism and speed of light. However, the large-scale implementation of ONNs remains challenging due to the bulky footprint and complex control of optical synapses. In this work, we propose and simulate a plasmonic polarized synaptic architecture that overcomes the diffraction limit and enables ultra-compact ONNs. By tuning the polarization state of incident light, the optical transmittance through each plasmonic unit can be dynamically adjusted to represent a synaptic weight. Our plasmonic structures, with features as small as 40 nm, operate well below this limit in the visible spectrum (400–750 nm). Compared with diffraction and interference-based circuit designs, our proposed method achieves a substantial reduction in synaptic density by factors of 150000-fold and 1500-fold, respectively. Furthermore, we successfully demonstrate a proof-of-concept plasmonic ONN applied to the Canadian Institute for Advanced Research—10classes (CIFAR-10) dataset using a Visual Geometry Group network with 16 layers (VGG16) model. After training for 80epochs, the network achieves an accuracy of 93%. The polarization-tunable plasmonics paves the way towards scalable ONNs for next-generation artificial intelligence (AI) accelerators and smart sensors.

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富尔顿文官改革述论

陕西师范大学学报(哲学社会科学版) 2000年第4期 169-173页

作者：李治国宋发清华东师范大学历史系!上海200062

《富尔顿报告》提倡的新型行政理念，成为“二战”后英国文官现代化的宣言。制度生存环境的变化是促使富尔顿文官改革的主要动因。从行政学的角度看，组织权威的缺失是本次改革失败的主要原因。

关键词：英国文官改革《富尔顿报告》文官现代化