连铸板坯轧制中板的表面缺陷

对连铸板坯轧制中板表面缺限进行了分析，根据产生原因可分为有含有非金属夹杂的气囊表面缺陷；不含有非金属夹杂的气囊表面缺陷；由气泡产生的“雨点”状表面缺陷；“鱼鳞”状表面缺陷，“山水画”状表面缺陷，另外，对产生这些表面缺限原因初步分析，探讨后提出了改进措施，从而为现场提供判断依据。     

高纯产品阶段性尺寸超差缺陷的原因分析及改进措施

通过对高纯产品阶段性尺寸超差缺陷产生的过程和特征进行分析，确认了缺陷产生的原因及机理，解释了产品缺陷的特征现象；结合生产实际提出了保证连续生产的应急措施，以及彻底消除产品阶段性尺寸超差缺陷的解决办法。     

连轧管机组的主要产品缺陷分析

对Ф250MPM限动芯棒连轧机组，采用边铸坏生产缝钢管生产过程中易产生的产品缺陷进行了详细的分析，指出了缺陷产生的原因及预防措施，从而减少产品缺陷，提高产品质量。     

超低碳冷轧薄钢板中表面缺陷的消除

由于超低碳钢板坯在振痕下面容易形成钩形缺陷，而这些钩形缺陷阻碍结晶器中氩气气泡和保护渣宏观夹杂物的上浮和分离，因此，最终使钢板表面产生缺陷。钢板产生缺陷的另一个原因，是Mn／S比非常低的钢在轧制过程中可能产生表面热裂纹。据此，国外一家公司采取以下措施来消除表面缺陷，取得了良好的效果：     

小方坯表面缺陷产生原因及防止措施

分析了小方坯表面缺陷的产生原因，针对造成小方坯产生表面缺陷的因素提出了防止措施，并取得了实效。     

铝合金建筑型材常见表面缺陷分析

简要分析了铝型材常见表面缺陷产生的原因，并提出了避免这些缺陷产生的办法。     

CSP薄板产品表面夹杂缺陷的控制

由于热加工历程的差异，与常规热轧相比，CSP线生产的薄板产品表面质量较难控制，其中表面夹杂是发生频率最高的缺陷之一。本文通过缺陷分析，确定了缺陷的产生机理和主要影响因素，并通过提高钢水质量和优化连铸工艺，控制了表面夹杂缺陷的大规模产生。     

热镀锌锌渣缺陷的控制

通过对热镀锌锌渣缺陷形成机理进行探讨，重点分析了锌渣缺陷产生的原因。最后根据梅钢的具体情况，从工艺上提出减少锌渣缺陷产生，提高镀锌板表面质量的控制措施。     

支承辊的维护与保养

分析了支承辊缺陷产生的原因，介绍了缺陷的检测方法和缺陷的预防措施。     

实现连铸坯表面无缺陷的对策

本文综述了采用连铸机的种类，铸坯尺寸，形状，冶炼钢种，化学成份，工艺操作等不同，产生的表面缺陷也不同，各种缺陷对表面质量，产量有不同程度的影响，以及表面缺陷产生的原因及防止措施，供炼钢工作者参考。     

Behavior of Ellipsoids of Two Sizes

The influence of particle shape on granular material response is examined by using the discrete element method. Triaxial drained and undrained tests were performed on specimens of ellipsoids of two sizes. The triaxial test boundary conditions were simulated with a recently developed boundary mechanism. Different loading paths including axial compression, axial extension, lateral compression, and true extension were employed. The specimens were composed of 1,170 ellipsoids having two types of particles. The specimen is made up of 50% by weight of Type I particles that have an aspect ratio of 1.2. The aspect ratio of the Type II particles varies between 1.5 and 2. The specimens were consolidated isotropically before shearing. Comparing with the behavior of specimens of mono-size particles, a higher friction angle and a more complex particle shape effect were observed. The friction angles from the drained tests (axial extension, true extension, and lateral compression tests) were similar and the values are higher than that of the axial compression test. All simulated results are in good agreement with laboratory observation of sands.     

热处理对纳米氧化锆粉末性能的影响

采用共沉淀法制备纳米ZrO2粉末,对其进行不同温度下的热处理,并对经过热处理的粉末进行物理性能及形貌的测试分析。对经过热处理的粉末进行等离子球化处理,并对其形貌进行观测。采用等离子喷涂方法制备ZrO2涂层,对涂层形貌进行观测。结果表明在适当温度对ZrO2进行热处理可提高粉末松装密度、流动速率及表面光洁度,提高粉末和涂层的综合性能。     

电站锅炉燃烧器烧损的原因及对策

锅炉燃烧器投运后，多次发生烧损问题，进行试验及检查，分析燃烧器烧损的原因，提出解决方案并实施，取得了预期的效果。     

明日叶查尔酮对小鼠肝癌细胞凋亡相关蛋白表达的影响

Objective: The aim of our study was to investigate the effect of Angelica keiskei chalcone (AC) on the expression of Caspase-3 and Bax in mice hepatocarcinoma cells. Methods: Fifty mice inoculated hepatocarcinoma 22 cells were divided into five groups, 10 mice per group. Mice were given 5, 20, 40 mg/kg AC daily by mouth in low, middle and high dose groups respectively. Saline were given to the tumor control group by mouth. Twenty mg/kg cytoxan (CTX) by injection every other day were given to the positive control group. Ten days later, all mice were sacrificed. The levels of the Caspase-3 and Bax protein expression were measured by immunohistochemistry method and the proliferation activity of hepatocarcinoma cells was determined by MTT assay. Results: The expression level of Caspase-3 and Bax protein in tumor control group were 5.00%and 4.68%, respectively, and those of the high-dose group were 38.52% and 35.76%. The differences between two groups were significant (P ＜ 0.05). The cell proliferation activity of tumor control group and high-dose group were 1.135 ± 0.032 and 0.716 ± 0.018. The difference was significant (P ＜ 0.05). Conclusion:AC can increase the expression of Caspase-3 and Bax protein, and inhibit the proliferative activity of mice hepatocarcinoma cells.     

转炉渣选矿技术研究

本文简述了贵溪台炼厂一期转炉渣选矿生产现状，分析了生产中存在的问题，研究了转炉渣性质的变化，探讨了尾矿含铜高的原因，在现工艺流程基础地浮选药剂试验，提出了工艺流程及设备的履行等方面的建议。     

Duration of incubation of fungal cultures

To determine the optimum duration of incubation for recovery of fungi, the results of 2,173 consecutive clinical cultures were reviewed. Overall, 94% of fungal isolates were detected by day 7 and 98% were detected by day 14. Yeasts were usually (98%) detected within the first week of incubation. Recovery of molds required more time, but 81% were detected by day 7 and more than 96% were detected by day 14.     

X射线荧光光谱技术在铁矿石分析中的应用文献评介

系统汇集了20世纪70年代以来我国使用X射线荧光光谱(XRF)分析技术进行铁矿石分析的文献共计101篇,其中熔融制样法文献78篇,粉末压片法文献11篇,能量色散仪器分析及野外现场应用文献12篇。首先介绍了铁矿石分析的基础条件:包括专著、标准物质、标准方法和综合性评述论文;然后采用表格方式对文献要点进行了介绍, 按熔融法、粉末压片法、能量色散多元素分析方法进行了重点评介;最后讨论了铁矿石分析中常遇到的粒度、矿物效应,制样方法选择和内标的应用等实际问题。对XRF在铁矿石分析中的某些重要问题进行了探讨,并对XRF分析铁矿石的应用前景作了展望。文献表明:XRF技术已经成为铁矿石主、次量元素分析最重要的分析方法之一。全篇引文151篇。     

新型热轧钢卷运输系统研究

介绍了项目的背景、概况及热卷运输的特点，分析了常用的热卷运输方式的特点，详细研究了托盘式运输方案的难点和关键点，提出了首钢京唐钢铁联合有限责任公司热卷运输系统的方案。     

铸坯内部缺陷对钢板分层形成的影响

探测和解剖分析了断面有中心裂纹缺陷的铸坯;用扫描电镜等分析了依照探伤图谱所选轧后钢板分层缺陷明显部位的金相组织、缺陷形态和微区成分;指出了其沿轧向分布的铁素体带及其内部的条状或片状硫化物是中厚板分层的主要成因;给出了铸坯内部轧制时焊合及修复的边界条件。     

Comparison of the effects of introversion-extraversion and anxiety of conditoning.

This study investigates the effects of Eysenck's introversion-extraversion theory and Spence-Taylor's concept of anxiety on the eyeblink conditioned response by varying these factors independently. 56 patients were subjected to conditions of high and low anxiety. Group I (anxious group) were about to undergo major surgery; Group II (nonanxious group) were patients who had successfully recovered. These patients were divided into high introverts and high extraverts, yielding 4 groups (anxious introverts anxious extraverts, nonanxious introverts, nonanxious extraverts). The anxious groups showed greater conditioning than the nonanxious groups and no significant differences were found between the high and low introvert groups, supporting the hypothesis that total drive is, in part, a function of internal anxiety. (19 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)