略论大学生就业面试中禁忌的问题

面试是毕业生在求职过程中最重要的一个环节。笔者根据工作实际,全面深入的分析了大学毕业生在面试过程中存在的一些问题,希望对大学生就业有所帮助。     

基于TMS320F2812的CANopen协议的通信实现

CANopen是一种开放的现场总线协议,是欧洲嵌入式工业控制网络的主要标准协议.在分析CANopen协议的对象字典、设备模型和通信对象等的基础上,采用CANopen协议的子协议DS301实现了基于CAN总线的TMS320F2812与主控模拟调试软件之间的通讯,并通过测试验证了通讯过程中信息传递的正确性和可靠性.     

西方教育市场化观点对中国高等教育的启示

市场经济体制的建立改变了我国高校由国家直接管理,政府统一办学的单一形式,提倡政府办、社会办、企业办、集资办等多种办学形式。但是,目前中国高校经营非市场化,会影响中国高等教育的全面发展。新自由主义经济理论中的高等教育市场化观点及影响给我们以启发。     

清前期地方政府对科举经费的管理与监督

在清代,除了中央政府直接管理的科举经费之外,还下放一定的权力让地方政府管理部分科举经费。具体而言,一方面地方政府采取效率制度和宾兴礼仪两种型式管理奏销的科举经费;另一方面又通过一系列的制度创新和组织创新尽可能地将官员、士绅和商人等社会各阶层手中的闲散资金转变为外销科举经费,最大限度地弥补了奏销科举经费在维护科举制运作过程中的不足。     

唐五代科举怀挟政策的变革与实际影响

如何对待科场怀挟是唐五代科举政策的一个内容,唐人对此的认识也处于探索阶段。允许考生怀挟书策被认为是唐帝国信心取士的体现,禁止怀挟也被认为是革除科场舞弊的重要手段。唐五代进士科允许考生怀挟的书策涵盖经、史、集和韵书、字书、类书等,间接地促进了当时的文化建设事业。本文检讨了唐五代怀挟政策的变革历程,并结合宋代的新情况来反观之,认为科举怀挟书策的需要促进了唐五代小型类书的编撰,也间接地催生了宋代坊刻事业的发展。     

淋巴管生成在食管鳞癌进展中的意义

目的:探讨食管鳞状细胞癌组织中淋巴管生成的临床病理意义.方法:应用单克隆抗体D2-40检测食管癌周围和中心区以及正常食管组织中微淋巴管密度(lymphatic micro vessel density,LMVD),分析其与食管癌患者年龄、性别、食管癌分化程度、淋巴结转移的关系.结果:肿瘤周围区LMVD明显高于中心区和正常组织.肿瘤周围区LMVD和淋巴结转移密切相关,而与肿瘤的分化程度无关.结论:食管癌在肿瘤周围区存在着明显的淋巴管形成,检测肿瘤周围淋巴管密度可以预测肿瘤淋巴结转移,因此具有良好的临床病理应用价值.     

Effect of high glucose levels on the calcification of vascular smooth muscle cells by inducing osteoblastic differentiation and intracellular calcium deposition via BMP-2/Cbfα-1 pathway

In this paper,we investigate the effect and the possible mechanism of high glucose levels on the calcification of human aortic smooth muscle cells (HASMCs).HASMCs were divided into four groups: normal glucose group (NG),osmolality control group (OC),high glucose group (HG,HASMCs culture medium containing 30 mmol/L glucose),and high glucose plus recombinant human Noggin protein (bone morphogenetic protein-2 (BMP-2) antagonist) group (HN).The mRNA levels and the protein expressions of BMP-2 and core binding factor alpha-1 (Cbfα-1) were measured by real-time quantitative polymerase chain reaction (PCR) and Western blot.After induced by 10 mmol/L β-glycerol phosphoric acid,cells were harvested for assessments of alkaline phosphatase (ALP) activities at Days 1,2,and 3,and intracellular calcium contents at Days 7 and 14,respectively.High glucose levels increased the mRNA levels and the protein expressions of BMP-2 and Cbfα-1 (P0.05).The expression of Cbfα-1 was partially blocked by Noggin protein (P0.05),while BMP-2 was not (P0.05).After being induced by β-glycerol phosphoric acid,high glucose levels increased the ALP activity [(48.63±1.03) vs.(41.42±2.28) U/mg protein,Day 3;P0.05] and the intracellular calcium content [(2.76±0.09) vs.(1.75±0.07) μmol/mg protein,Day 14;P0.05] in a time-dependent manner when compared with the NG group,while the ALP activity could not be blocked by Noggin protein [(48.63±1.03) vs.(47.37±0.97) U/mg protein,Day 3;P0.05].These results show that high glucose levels can evoke the calcification of HASMCs by inducing osteoblastic trans-differentiation and intracellular calcium deposition via the BMP-2/Cbfα-1 pathway,which can be partially blocked by Noggin protein.     

建国初期黔东南地区解决三农问题的历史考察——以农业合作化运动为例

建国初期黔东南地区的土地改革只是初步地解决了三农问题,农村和农民并没有一劳永逸地摆脱贫困,农业生产的发展依然困难重重。为了快速发展农村经济,黔东南地区开展了农业合作化运动。合作化运动在推进三农问题解决的同时,也带来了一些负面效应。     

贯彻落实科学发展观 提高部队党委的决策水平

科学发展观是我国经济社会发展的重要指导方针,是中国特色社会主义必须坚持和贯彻的重大战略思想。是加强和改进党的建设的强大理论武器。党委是领导部队建设的核心,党委决策是否科学关系到部队的全面发展。因此,必须贯彻落实科学发展观要求,提高党委科学决策的水平,确保各项工作高起点、高标准和部队建设的高质量。     

Catalytic dechlorination and detoxification of 1-（2-chlorophenyl） ethanol by Pd/Fe

1-（2-chlorophenyl） ethanol （CPE） is of health and environmental concern due to its toxicity and its use as an intermediate in pharmaceutical manufacturing. The current work deals with the catalytic reductive dechlorination and detoxification of CPE by Pd/Fe bimetal. CPE was effectively dechlorinated to l-phenyl ethanol （PE） accompanied by the equivalent release of chloride. The extent of CPE dechlorination increased with temperature, Fe dosage and Pd loading. A decrease in solution pH increased CPE dechlorination, resulting presumably from an increase in hydrogen production. Under the specific conditions of 20 g/L Pd/Fe, 0.10% Pd （w/w） and initial pH 5-6, the CPE dechlorination was completed within 145 rain. The dechlorination followed a pseudo-first-order kinetics with an activation energy of 56.7 kJ/mol. The results of toxicity testing showed that CPE was very toxic to Chlorella, whereas PE showed little toxicity. The toxicity of the reaction solution declined gradually and the promoting effects on Chlorella intensified consequently with the dechlorination process. Thus, the reductive dechlorination of CPE to PE by Pd/Fe was a detoxification process. It may be used to effectively reduce the toxicological effects of CPE-contaminated wastewater, thereby enhancing the performance of subsequent biological processes in wastewater treatment.