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废弃环氧树脂电路板的热解机理及动力学研究

中南大学学报（自然科学版） 2011年第3期42卷 610-616页

作者：湛志华丘克强中南大学化学化工学院湖南长沙410083

采用热分析技术(TGA)研究废弃环氧树脂电路板在氮气气氛和真空条件下热解过程的反应机理和动力学行为。将热解过程分为2个阶段进行机理和动力学研究。研究结果表明:环氧电路板的热解过程第1步是失去水分和小分子物质,第2步是有机材料的... 详细信息

采用热分析技术(TGA)研究废弃环氧树脂电路板在氮气气氛和真空条件下热解过程的反应机理和动力学行为。将热解过程分为2个阶段进行机理和动力学研究。研究结果表明:环氧电路板的热解过程第1步是失去水分和小分子物质,第2步是有机材料的裂解。氮气氛围和真空2种条件下裂解反应第1阶段遵循共同的机理函数,是以成核及核成长为控制步骤的A3机理,反应级数为3级;第2阶段都是以幂函数不均匀生长为控制步骤的C1.5机理;真空热解有利于降低反应的活化能;氮气氛围裂解反应各阶段的表观活化能和频率因子分别为:E1=239.95 kJ/mol,A1=1.94×1022 s-1;E2=130.73 kJ/mol,A2=1.88×1013 s-1;在真空条件下,裂解反应各阶段的表观活化能和频率因子分别为:E1=74.24 kJ/mol,A1=1.52×108 s-1;E2=41.64 kJ/mol,A2=5.16×1010 s-1。

关键词：电路板热裂解反应机理动力学

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论科学史学的创新意蕴

自然辩证法通讯 2008年第5期30卷 63-68页

作者：詹志华厦门大学哲学系福建厦门361005

科学史学蕴涵着对科学创新的价值和意义。这种创新意蕴主要体现为:一是通过科学史学直接促成科学发现;二是通过科学史学,提升科研人员的素质,改善其工作的环境,使其做出科学发明,从而间接地推动科学创新工作。科学史学这两方面的创新意... 详细信息

科学史学蕴涵着对科学创新的价值和意义。这种创新意蕴主要体现为:一是通过科学史学直接促成科学发现;二是通过科学史学,提升科研人员的素质,改善其工作的环境,使其做出科学发明,从而间接地推动科学创新工作。科学史学这两方面的创新意蕴密切相关,经它们之间的交叉、融合可以演化出科学史学创新意蕴的多种表现形式。

关键词：科学史学创新意蕴科学发现科学发明

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台湾科学史学的建制与发展

史学理论研究 2008年第3期 118-124,160页

作者：詹志华厦门大学哲学系博士生361005

从20世纪80年代开始,台湾科学史学开始了一系列建制化活动,包括成立台湾"中研院科学史委员会",发行科学史研究的刊物,举办与科学史有关的学术活动以及建立科学史研究的相关机构和团体等。经过数十年的积淀,特别是建制化的推动,台湾科学... 详细信息

从20世纪80年代开始,台湾科学史学开始了一系列建制化活动,包括成立台湾"中研院科学史委员会",发行科学史研究的刊物,举办与科学史有关的学术活动以及建立科学史研究的相关机构和团体等。经过数十年的积淀,特别是建制化的推动,台湾科学史学事业得到发展,包括科学史学界开始频繁参与各种学术交流活动,适机改变自身的研究理论与方法,不断开辟科学史研究的新领域。

关键词：台湾科学史学建制

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金属熔池中浸入式侧吹射流行为

过程工程学报 2006年第Z1期6卷 43-46页

作者：萧泽强詹树华东北大学材料与冶金学院辽宁沈阳110006 钢铁研究总院北京100081

利用水模型和数学模型研究了金属熔池中浸入式侧吹射流的行为和混合效率.讨论了Themelis和Brimacombe等人研究结果的分歧,指出金属熔池中侧吹气体射流的结构受气泡生成的影响,射流轨迹不符合Szekely计算方法得出的规律.

关键词：浸入式侧吹金属熔池射流轨迹混合数学物理模拟

Correlation of serum cyclophilin A and monocyte chemoattractant protein-1 levels with carotid atherosclerosis in patients with acute cerebral infarction

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Journal of Hainan Medical University 2017年第11期23卷 150-153页

作者： Jun Jia Liang huang zhan-hua zhang Department of Neurology Chenggu County Hospital in Shaanxi ProvinceHanzhong723200China Xi'an Honghui Hospital in Shaanxi Province Xi'an710054China

Objective:To study the correlation of serum cyclophilin A (CyPA) and monocyte chemoattractant protein-1 (MCP-1) levels with carotid atherosclerosis in patients with acute cerebral ***: 106 patients with acute cerebral infarction who were hospitalized in our hospital between July 2011 and August 2015 were selected as observation group, and 50 cases of healthy persons who received physical examination in our hospital during the same period were selected as normal control group. The serum CyPA and MCP-1 contnets in two groups were determined. According to the median of CyPA and MCP-1 contents in observation group, they were divided into high CyPA group and low CyPA group as well as high MCP-1 group and low MCP-1 group, 53 cases in each group. Contents of lipid metabolism indexes and carotid atherosclerosis illness-related indicators were compared between acute cerebral infarction patients with different CyPA and MCP-1 ***:Serum CyPA and MCP-1 contents in observation group were significantly higher than those in control group. Serum TC, LP(a) and LDL-C contents in high CyPA group and high MCP-1 group were higher than those in low CyPA group and low MCP-1 group while HDL-C contents were lower than those in low CyPA group and low MCP-1 group. Serum CysC, Hcy and UA contents in high CyPA group and high MCP-1 group were higher than those in low CyPA group and low MCP-1 ***: Serum CyPA and MCP-1 contents in patients with acute cerebral infarction are higher than those in normal population, and the contents of CyPA and MCP-1 are positively correlated with the degree of carotid atherosclerosis.

关键词： Acute cerebral infarction Cyclophilin A Monocyte chemoattractant protein-1 Carotid atherosclerosis

High-resolution 3T Magnetic Resonance Imaging of the Triangular Fibrocartilage Complex in Chinese Wrists： Correlation with Cross-sectional Anatomy

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Chinese Medical Journal 2017年第7期130卷 817-822页

作者： Hui-Li zhan Wen-Ting Li Rong-Jie Bai Nai-Li Wang zhan-hua Qian Wei Ye Yu-Ming Yin Department of Radiology Beijing Jishuitan Hospital Beijing Institute of Traumatology and Orthopedics Beijing 100035 China Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic Medicine Peking Union Medical College Beijing 100005 China 3MRI and CT Services Radiology Associates LLP Corpus Christi TX 78411 USA

Background：The injury of the triangular fibrocartilage complex （TFCC） is a common cause of ulnar-sided wrist *** aim of this study was to investigate if the high-resolution 3T magnetic resonance imaging （MRI） could demonstrate the detailed complex anatomy of TFCC in ***：Fourteen Chinese cadaveric wrists （from four men and three women;age range at death from 30 to 60 years;mean age at 46 years） and forty healthy Chinese wrists （from 20 healthy volunteers,male/female：10/10;age range from 21 to 53 years with a mean age of 32 years） in Beijing Jishuitan Hospital from March 2014 to March 2016 were included in this *** cadavers and volunteers had magnetic resonance （MR） examination of the wrist with coronal T 1-weighted and proton density-weighted imaging with fat suppression in three planes,*** arthrography （MRAr） was performed on one of the cadaveric ***,all 14 cadaveric wrists were sliced into 2 mm thick slab with band saw （six in coronal plane,four in sagittal plane,and four in axial plane）.The MRI features of normal TFCC were analyzed in these specimens and forty healthy ***：Triangular fibrocartilage,the ulnar collateral ligament,and the meniscal homolog could be best observed on images in coronal *** palmar and dorsal radioulnar ligaments were best evaluated in transverse *** ulnotriquetral and ulnolunate ligaments were best visualized in sagittal *** latter two structures and the volar and dorsal capsules were better demonstrated on ***：High-resolution 3T MRI is capable to show the detailed complex anatomy of the TFCC and can provide valuable information for the clinical diagnosis in Chinese.

关键词： Anatomy Magnetic Resonance hnaging Triangular Fibrocartilage Complex Wrist