高铝热镀锌合金中铝锌硅铁铅镉锡的系统分析方法

提出了高铝热镀锌合金中铝锌硅铁铅镉锡的系统分析方法，所拟方法快速简便，效果良好。     

Finding equilibrium: Mentoring, sexual orientation, and gender identity.

The authors explore mentoring relationships in which one or both members are lesbian, gay, bisexual, or transgender (LGBT). They highlight the role of stigma, in its variable presentations, as an important underpinning of these relationships. They argue that explicit attention to stigma, both within the mentoring relationship and beyond, is of value to the mentoring process and outcome. The authors offer a developmental perspective on mentoring needs, and they suggest specific considerations for LGBT and heterosexual mentors of LGBT students. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Punitiveness, authoritarianism, and parental discipline of grade school children.

"The purpose of this study was to investigate the interrelationships among ethnocentrism-authoritarianism in children, the child's willingness to be punitive, and the punitiveness of the parent as the child sees it. Three hypotheses postulating positive correlations among the three variables were set up… . It is concluded that the three hypotheses of the study are supported by the data, and that this evidence is in accord with, and reflects favorably upon, the theory of the origin of ethnocentrism-authoritarianism proposed by Frenkel-Brunswik and her associates." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Eye movements accompanying daydreaming, visual imagery, and thought suppression.

Relationship between oculometer activity during the waking state and internally produced cognitive processes such as daydreaming and visual imagery were studied by means of continuous electro-oculograms. 24 female college students served as Ss. Eye movements and blinks were more frequent following instructions to engage in active rather than passive thinking; more frequent following instructions to suppress than to generate a wish. Greater ocular activity was observed under instructions to imagine moving than to imagine static visual imagery, the difference holding for both eyes open and closed conditions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-handicapping, excuse making, and counterfactual thinking: Consequences for self-esteem and future motivation.

Researchers interested in counterfactual thinking have often found that upward counterfactual thoughts lead to increased motivation to improve in the future, although at the cost of increased negative affect. The present studies suggest that because upward counterfactual thoughts indicate reasons for a poor performance, they can also serve as excuses. In this case, upward counterfactual thoughts should result in more positive self-esteem and reduced future motivation. Five studies demonstrated these effects in the context of self-handicapping. First, upward counterfactual thinking was increased in the presence of a self-handicap. Second, upward counterfactual thoughts indicating the presence of a self-handicap protected self-esteem following failure. Finally, upward counterfactual thoughts that protect self-esteem reduced preparation for a subsequent performance as well as performance itself. These findings suggest that the consequences of upward counterfactuals for affect and motivation are moderated by the goals of the individual as well as the content of the thoughts. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

滴定法连续测定铅锌矿中铅锌铜

铅锌矿样经盐酸和硝酸溶解后,以硫酸为沉淀剂,使铅与硫酸形成硫酸铅沉淀,锌和铜留在溶液中。过滤后,用乙酸-乙酸铵缓冲溶液溶解硫酸铅沉淀,以二甲酚橙为指示剂,EDTA标准溶液滴定铅。分取两份滤液,一份用于测定锌,另一份用于测定铜。测定锌时以氢氧化物沉淀分离铁、锰等金属离子后,在pH 5.5乙酸-乙酸钠缓冲液中,硫脲存在下,以二甲酚橙为指示剂,用EDTA标准溶液滴定锌。另一份滤液中铜采用碘化钾-硫代硫酸钠滴定法测定。方法用于铅锌矿样品中铅、锌和铜的测定,测定值与国家标准方法的测定值一致,测定结果的相对标准偏差在0.042%～0.088%之间。     

Poughkeepsie Bridge: Its Birth, Abandonment, and Rebirth

When opened the Poughkeepsie Bridge incorporated the longest span—548 ft—cantilever in the world; the longest simple span, 525 ft; and its overall length, 6,767 ft, was for a short time the longest bridge in the world. Between 1871 and 1889, its opening, some of the leading engineers and railroad men had been involved in its planning and design including three future presidents of ASCE. Construction is currently under way to convert the bridge to a pedestrian/bicycle pathway across the Hudson River.     

含铋铅锑银阳极泥中有价金属提取工艺研究

含铋、铅、锑、银阳极泥,采取湿法综合回收其中的有价金属的具体方法研究。