专利技术

本实用新型公开了一种制备六氟化钼的反应器,包括简体,在简体的外壁周围设有加热装置,在简体顶部一端设置有氟气人口,在筒体顶部另一端设置有产品出口,在筒体的顶部中间设置有反应器测压口。在筒体内部的封闭一端设置有反应器测温装置,在筒体内部的中间部位设置有料盘。在筒体的下部一端设置有收集口,收集口与收集器顶盖相连,在收集器的外壁周围设置有冷媒夹套,在收集器上部有收集器测压装置和收集器测温装置。本实用新型结构简单,操作方便,安全性好。     

黄金

1黄金的生产历史黄金是一种贵重的金属,与其它金属相比,在地壳中的含量十分稀少,例如:在金副族中,它相当于银的1/20,铜的1/15750,在相邻的元素中,它只相当于铂的1/14、汞的1/25。因此,在贵金属中黄金在地壳中的含量是低的。据统计,黄金在地球中的总量为48×108t。在地球中的分布也很不均匀,在地壳中黄金的平均含量为0.0035g/t,总量为9.6×106t。在海水中平均含量为2×10-5g/m3,含金量达2.84×107t。可见,在地球演化过程中,98.1%的黄金进入地核中。迄今为止,人类共生产黄金大约12万t,其中2%是在1492年的新大陆发现以前生产的,8%是在1492~1800…     

浅谈21世纪的室内设计呈现的精神面貌

在进入二十一世纪以后,作为一个专门的学科和行业,设计艺术在社会经济和大众生活中的支撑发展地位已经越来越重要。在30年的磨合中,精神、科学和技术已经形成进一步的整合,在这一发展历程中,我国艺术设计有了长足的进步,应当说成就卓著,尤其在室内设计方面。     

圆梦——做中国铜行业排头兵——云南铜业集团新一届领导班子半年工作纪实

云铜集团在新一届领导班子的带领下,正披荆斩棘,阔步前行,奔驰在二次创业的路上。在三至五年的时间内,云铜集团将成为中国铜行业排头兵;在不久的将来,云铜集团将成为中国一流、世界知名的铜业公司。     

爵士鼓Fill in的训练与运用

在现代流行音乐发展迅速的今天,爵士鼓作为核心乐器之一,在音乐表现中发挥了巨大作用,它不仅仅在节奏速度,力度上有着不可替代的优势,同时在塑造、渲染、丰富音乐形象等方面也是其它乐器不可比拟的。随着现代音乐的不断发展,学习爵士鼓的人越来越多,自从70年代末80年代初,爵士鼓这门乐器真正传入我国,在     

奥托昆普公司现在的主要产品

不锈钢及其制品:奥托昆普公司的不锈钢分公司是AvestaPolarit,它是在2002年与AvestaSheffield合并而成的。现在,不锈钢业务在奥托昆普公司的业务中占主要地位,其不锈钢板卷的年产量在150万t左右,其营业收入占总营业额的65%~70%。它在芬兰有托尔尼奥(Tornio)不锈钢炼钢厂、在瑞典有尼比(Nyby)冷轧厂、在法国有FlexiFrance挠性管制造厂、在英国有舍菲尔德(Sheffield)不锈钢服务中心。奥托昆普公司的不锈钢,在英国占了英国市场份额的一半以上。奥托昆普公司在法国的挠性管生产厂制造的挠性管,是供应给海洋石油开采用的,该公司说其公差配合…     

未来数周金银难改偏弱格局

在经历2月中下旬的一轮持续下跌后,近期黄金白银价格均陷入弱势震荡格局。截至3月11日的一个月内,黄金时价均在1600美元/盎司以下交投,白银则在30美元/盎司以下交投。对比黄金白银和其他主要资产类别近一个月以来的走势可以看到,在主要的资产中,除了美元指数以外,在近一个月中几乎没有资产实现累计的正收益,而在这其中,白银的累计跌幅最大,接近10%,其次分别是原油、黄金和铜,累计跌幅都在5%左右(见图1)。     

添加微量铈对热镀锌层耐腐蚀性的影响

在热镀锌镀液中加入微量铈,对其所形成的镀层在酸性和中性介质中的耐腐蚀性进行了测定和分析.结果表明,在镀液中加入约0.05%的金属铈,能显著提高锌镀层在酸性介质中的耐腐蚀性能;在镀液中加入约0.1%的金属铈,锌镀层在中性介质中的耐腐蚀性能最好.     

在思想品德教学中培养学生的创新精神

创新是一个民族进步的灵魂,是一个国家兴旺发达的不竭动力。教育在培养民族创新精神和培养创新人才方面,肩负着特殊的使命。在中学思想品德教育教学实践中培养学生的创新精神和能力,就要建立新型的师生关系,让学生在愉快中学;要发挥学生的主体作用,让学生在讨论中学;要注重实践体验,让学生在操作中学;要用科学的评价方法,让学生在鼓励中学。     

试论新课标下的数学教学

数学学习离不开个体的体验,学生需要在自主探究中体验"再创造",在实践操作中体验"做数学",在合作交流中体验"说数学",在联系生活中体验"用数学".学生体验学习,是用心去感悟的过程,在体验中思考,创造,有利于培养创新精神和实践能力,提高学生的数学素养.     

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.     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

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)