出版物上数字的用法(GB/T 15835—2011)

在使用数字进行计量、编号的场合,为达到醒目、易于辨识的效果,应采用阿拉伯数字;当数字伴随有计量单位时,如:长度、容积、面积、体积、质量、温度、音量、频率等,特别是当计量单位以字母表达时,应采用阿拉伯数字。现代生活中出现的事物、现象、事件,其名称的书写     

中国有色（沈阳）冶金机械有限公司

中国有色（沈阳）冶金机械有限公司是我国机械工业和重型骨干企业,隶属于中国有色矿业集团有限公司,具有60余年的历史,有员工3400名,其中工程技术人员385名,具有铸钢、铸铁、铸铜、焊接、锻造、热处理、机械加工等机械制造实力;拥有完善的理化测试手段和科研、设计、制造、配套、安装、调试等综合能力;长期致力于矿山、冶金设备的研制、开发和制造,是机械制造业的核心企业,为钢铁冶金、有色冶金、化工、电力、建材、水泥等工业提供各种专用与非标设备与备件。     

方铅矿单矿物中各元素的测定

有色金属单矿物中各元素分析,一直受样品重量所控制,挑选一种单矿物的矿物,需耗费相当的时间,为了节省样品称样数量,提高分析速度,结合实际工作需要,拟定了三种分析流程,取样600mg,测定21种元素,满足了方铅矿单矿物的分析。 一、分析流程 1.火焰原子吸收法分析铜、铅、锌、钴、镍、镉、银、铁、锰、钙和镁等。 2.经过富集和分离后用原子吸收法测定锗、镓、铟、铊、和吸光度法测定硒、碲。     

创新泛亚——以稀有成就富有

正2011年4月21日,泛亚有色金属交易所正式开市交易。目前,已上市品种包括铟、锗、钨、铋、镓、钴、白银、钒、锑、碲、硒等11个品种,其中铟、锗、钨、铋、镓等品种的交易量、交收量、库存量均为全球第一。小金属大作用稀有金属是国民经济发展的重要基础材料,铟、锗、钨、铋、镓、钴等稀有金属,被称为电子金属,生命攸关金属,     

铝箔应用漫谈

铝箔是柔软的金属薄膜,因其防潮、气密、遮光、无毒无味等优良的特性,通常作为包装材料,广泛用于食品、饮料、香烟、医药、家庭日用品等。其优雅的银白色光泽,更易于加工出各类图案和花纹。铝箔与塑料和纸复合之后,把铝箔的屏蔽性与纸的强度、塑料的热密封性融为一体,进一步提高了对水汽、空气、紫外线和细菌的屏蔽性能,拓宽了铝箔的应用市场。未来需求广泛     

新疆伊斯兰建筑中石膏雕花艺术的色彩表现形式

石膏雕花是新疆维吾尔族建筑中非常重要的装饰形式,是民族文化的核心之一,其建筑形制、图案纹饰、色彩,承载着历史文化的文脉,是民族建筑艺术之美,它在新疆伊斯兰清真寺、陵墓、民居、商业建筑上都被大量运用,具有悠久的历史,独特的艺术风格。它的色彩艳丽、丰富,纹样形式多样,主要有植物纹、几何纹、书法纹几种形式。其主要运用在伊斯兰建筑的壁龛、米合拉甫、纳米尼亚、门楣等部位。伊斯兰艺术在传入新疆之前,吸纳了希腊拜占庭艺术、     

电感耦合等离子体原子发射光谱法测定高碳除尘灰中11种元素

实验重点探讨了高含量碳对除尘灰样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素测定的影响,并解决了除碳的问题。样品使用马弗炉高温除碳,采用盐酸-硝酸-氢氟酸-高氯酸消解样品灰分,选择了镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的分析谱线和扣背景模式,建立了使用电感耦合等离子体原子发射光谱法(ICP-AES)测定高碳除尘灰中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的方法。在仪器最佳工作条件下,各元素校准曲线线性相关系数r均大于0.999 5,方法检出限在1.08～26.01 mg/kg之间。方法应用于除尘灰实际样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌的测定,结果的相对标准偏差(RSD,n=11)为0.90%～7.1%,目标元素的加标回收率为90%～117%;按照实验方法测定除尘灰中镁、铝、钾、钙、锌,结果与火焰原子吸收光谱法(FAAS)的测定结果相吻合。     

铜合金挤压材常见缺陷分析及预防

分析了铜合金挤压材常见缺陷(裂纹、气泡、过热、过烧、划伤、扭拧、缩尾、偏心、尺寸超差等)的产生原因,提出了相应的预防措施.生产实践表明,采取这些措施后,有效地改善了产品质量,取得了良好的经济效益.     

30～50岁男性前列腺体积与体重指数、血压、血脂及血糖的相关性分析

目的:了解30～50岁男性前列腺体积与体重指数、血压、血脂及血糖的相关性.方法:从石景山区社会保险中心登记信息中随机抽取1 010名30～50岁男性作为研究对象,行体格检查并计算体重指数(body mass index,BMI),经腹B超测定并计算前列腺体积(prostate volume,PV);空腹抽血检测血糖(blood glucose,BG)、血胆固醇(blood cholesterol,CHOL)、甘油三酯(triglyceride,TG)、低密度脂蛋白(low density lipoprotein,LDL)、高密度脂蛋白(high density lipoprotein,HDL)等,测量血压(blood pressure,BP),应用SPSS13.0统计软件对PV和BMI、BP、BG、CHOL、TG、LDL、HDL的相关性进行统计学分析.结果:符合标准并资料全面者1002人,前列腺体积与年龄、BMI、BG、CHOL、LDL、HDL等因素有明显的相关性,P值分别为0.000、0.013、0.032、0.040、0.032、0.017,相关系数r值分别为0.62、0.57、0.52、0.51、-0.50、-0.48.与TG、收缩压(systolic pressure,SP)、舒张压(diastolic pressure,DP)无明显相关性,P值分别为0.313、0.213、0.782.调整年龄因素后,PV与BMI、LDL仍有较强的相关性,P值分别为0.029、0.001,相关系数r值分别为0.53、-0.49.与BG、CHOL、LDL、HDL、TG、SP、DP无明显相关性(P＞0.05).结论:在30～50岁男性人群中,前列腺体积和BMI及血脂异常明显相关,BMI、血脂异常是前列腺体积增大的危险因素.     

全谱交直流电弧发射光谱法测定地球化学调查样品中9种元素

传统电弧发射光谱法分析地球化学样品中Ag、B、Sn等元素时,采用光谱相板作为记录介质,而相板的灵敏度较低,谱线的线性范围较窄,采用人工操作译谱时,测量结果的精密度和正确度较差,因此在地球化学调查样品分析配套方案中,只采用电弧发射光谱法测定Ag、B、Sn这几个其他分析方法不易测定的元素。实验采用全谱交直流电弧发射光谱法,选择K₂S₂O₇-NaF-Al₂O₃-碳粉为缓冲剂,以Ge元素作为内标,确定曝光时间为45s,并进行仪器校正,选取合成硅酸盐光谱分析标准物质系列(GSES I-1~GSES I-9)绘制各元素的校准曲线,直接测定地球化学调查样品中Ag、B、Sn、Mo、Pb、Co、Ni、V、Bi等9种元素。方法检出限为:Ag 0.014μg/g、B 0.68μg/g、Sn 0.12μg/g、Mo 0.18μg/g、Pb 0.98μg/g、Co 0.32μg/g、Ni 1.79μg/g、V 1.51μg/g、Bi 0.05μg/g。方法用于测定6个地球化学标准物质中Ag、B、Sn、Mo、Pb、Co、Ni、V、Bi,结果的相对标准偏差(RSD,n=12)均小于10%;测定值与标准值之间的对数误差ΔlgC绝对值为0~0.057;按照实验方法和其他方法(电弧发射光谱法测定Ag、B、Sn,电感耦合等离子体质谱法测定Bi、Mo、Co,X射线荧光光谱法测定V、Ni、Pb)分别测定8个土壤样品中Ag、B、Sn、Mo、Pb、Co、Ni、V、Bi,结果相吻合。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.