CRT and LCD monitor and process materials evaluated for environmental improvement

Decision rules have been developed and applied to the bills of materials of a color cathode‐ray tube (CRT) and a liquid‐crystal‐display (LCD) desktop monitor to determine which product and process materials will be evaluated in an environmental life‐cycle assessment. Materials of significant mass, of technological importance, and of potential environmental impact are targeted. The list of materials identified are those for which life‐cycle inventory data will be obtained for the materials extraction and materials processing life‐cycle stages of a CRT and an LCD. Additionally, materials identified will also be used to represent life‐cycle impact in terms of resource consumption, as well as surrogates for occupational health impacts.     

Self-absorption correction for solid-state photoluminescence quantum yields obtained from integrating sphere measurements

A new method is presented for analyzing the effects of self-absorption on photoluminescence integrating sphere quantum yield measurements. Both the observed quantum yield and luminescence spectrum are used to determine the self-absorption probability, taking into account both the initial emission and subsequent absorption and reemission processes. The analysis is experimentally validated using the model system of the laser dye perylene red dispersed in a polymer film. This approach represents an improvement over previous methods that tend to overestimate the true quantum yield, especially in cases with high sample absorbance or quantum yield values.     

The impact of biotechnology on patent law

The author documents the historical purposes of the patent system and current relationships between biotechnology and that system, discussing unsettled areas of patent law. The author describes special problems in detecting infringement of patents, special requirements (such as depositing the relevant microorganisms in specified organizations), and unique problems of determining compensation for the inventors of genetically engineered processes and products. He discusses some proposed solutions, citing inter alia Stanford University's licensing agreements with biotechnology companies.     

The effect of action video game experience on task-switching

There is now a substantial body of work demonstrating that action video game experience results in enhancements in a wide variety of perceptual skills. More recently, several groups have also demonstrated improvements in abilities that are more cognitive in nature, in particular, the ability to efficiently switch between tasks. In a series of four experiments, we add to this body of work, demonstrating that the action video game player advantage is not exclusively due to an ability to map manual responses onto arbitrary buttons, but rather generalizes to vocal responses, is not restricted to tasks that are perceptual in nature (e.g. respond to a physical dimension of the stimulus such as its color), but generalizes to more cognitive tasks (e.g. is a number odd or even), and is present whether the switch requires a goal-switch or only a motor switch. Finally, a training study establishes that the relationship between the reduction in switch cost and action game playing is causal.     

电厂锅炉化学清洗工艺研究

介绍凝汽器泄漏机组运行工况以及受热面结垢情况,针对水冷壁结垢主要成分为磷酸盐垢,提出碱煮-盐酸清洗方法。在江油电厂50MW机组应用,垢洗脱率达90%以上。     

Effect of tinidazole, metronidazole and nitrofurazone on nucleic acid synthesis in Clostridium bifermentans

Coplanar lines of different orientations rotating in depth and viewed in parallel projection may appear to rotate in different directions and reverse independently of each other, or they may appear coplanar and all reverse together. The frequency of the latter "grouped" appearance for lines with an orientation range of 30 degrees was a function of the number of lines in a given space. Grouping was greater for lines converging to an implicit vanishing point and for lines with collinear edges regardless of their orientations. Line length, and by inference, interline separation also had effect of the nature of the response.     

含铀煅烧渣粉末酸浸工艺条件的研究

本文根据影响含铀煅烧渣粉末酸浸的主要因素：酸浸温度（A）、酸浸酸度（B）、酸浸时间（C）、渣粉粒度（D），采用正交实验法L16（4^4）对其酸浸工艺条件进行了研究：同时也对一次酸浸残渣中铀的再回收技术进行了探讨。实验结果表明：含铀煅烧渣粉末在所试最佳条件下．其浸出率可达97．5％以上．一次酸浸残渣中铀含量〈3％；一次酸浸残渣用浓硫酸熟化、煅烧破碎后．进行第二次酸浸实验，浸出率可达94％以上，二次酸浸残渣中含铀〈0．3％。通过本次实验．为实现大规模处理回收含铀煅烧渣粉末中的金属铀奠定了良好的基础。     

Experimental demonstration of real-time spectrum analysis using dispersive microstrip

We demonstrate the use of dispersive microstrip as a mechanism for obtaining the real-time Fourier transform of a time-limited signal within a predefined bandwidth. By etching a linearly-chirped impedance modulation into the upper plane strip-width, dispersive microstrip lines are created in which group-delay depends linearly on frequency within a prescribed bandwidth. When the group-delay satisfies a condition that is the temporal analog of the spatial Fraunhofer (far-field) condition of diffraction, the spectral components of an input signal are reordered in time such that the temporal envelope of the output signal corresponds to the Fourier-transform of the input. Experimental results are demonstrated for signals with frequency content from 4 to 8GHz in a 1.2-ns window.     

提高变压器抗短路强度的措施

变压器对抗短路强度的要求是很高的。文中介绍了变压器短路时的电动力的作用情况，结合单位实际情况介绍了提高变压器抗短路能力的措施。     

Physical, Mental, and Social Catastrophic Cognitions as Prognostic Factors in Cognitive-Behavioral and Pharmacological Treatments for Panic Disorder.

The authors explored the prognostic value of 3 different types of catastrophic cognitions in the treatment of panic disorder with and without mild-to-moderate agoraphobia using a sample of 143 participants who received either cognitive-behavioral therapy (CBT) or imipramine in a randomized controlled trial. Stronger fears of social catastrophes both prior to and following treatment with CBT or imipramine were associated with a poorer outcome. In contrast, cognitions involving physical or mental catastrophes were unrelated to outcome, regardless of whether these thoughts were measured prior to or following treatment. These findings are consistent with the notion that although the intensity of physical catastrophe cognitions may best discriminate between panic disorder and other anxiety disorders, it is the intensity of social catastrophe cognitions that is most closely tied to success in treating this disorder. (PsycINFO Database Record (c) 2010 APA, all rights reserved)