284 research outputs found

    Letter to J. Lamar Woodard regarding the SEAALL bank account, November 25, 1975

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    A letter from Claire Donovan to J. Lamar Woodard enclosing a check for the balance of the SEAALL bank account

    Letter to J. Lamar Woodard regarding SEAALL materials, July 19, 1976

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    A letter from Claire Donovan to J. Lamar Woodard information Woodard that Donovan is forwarding a box of SEAALL materials

    Letter to J. Lamar Woodard regarding SEAALL materials, October 15, 1975

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    A letter from Claire Donovan to J. Lamar Woodard enclosing a SEAALL membership list and related materials

    Letter to Leah Chanin regarding Lucile Elliott Scholarship winners, April 14, 1976

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    A letter from Claire Donovan to Leah Chanin providing Donovan\u27s recommendations for the recipients of the 1976 Lucile Elliott Scholarship

    The synthesis of aminophosphonic acid derivatives & related compounds

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    1-Aminoalkanephosphonic acids and their derivatives, have long been claimed to be compounds with a wide variety of application. Numerous examples exist where they have been described as: complex-forming agents with sequestrating properties, extractants, wetting agents, pharmaceutical preparations, ion exchangers, herbicides, compounds with plant growth regulatory activity; inhibitors of aminopeptidases; as structural units in peptide analogues, functioning as antibacterial agents, which inhibit bacterial cell wall biosynthesis; as structural units in peptidic phosphonylating agents that irreversibly inhibit a wide variety of serine proteases; as structural units in butyloxycarbonyl protected phosphonate esters that complex with alpha-lytic proteases; and as structural units in peptidyl phosphonate diphenyl 9 10 esters which powerfully inhibit the enzyme thrombin.

    Assessing the broader impacts of publicly-funded research

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    The chapter introduces the reader to the notion of the broader societal impacts of research, and to recent trends in public policy towards prioritising research that produces direct benefits to society. It explores the ‘science-society’ relationship and the obligation of publicly-funded researchers to engage in science that is relevant to society at large. It compares and contrasts top-down and bottom-up approaches to defining and measuring research impacts. Examples of different European approaches to impact assessment are presented (UK, The Netherlands, Ireland, Norway). The chapter reveals the inherently political nature of defining, measuring, and rewarding research impact, and what this form of science governance implies for future directions of state-funded research

    A Qualitative Method for Determining the Quality of BGA Solder Joints in a Lead-Free Process

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    The introduction of lead-free soldering is inevitable for the electronics industry and its use poses a number of challenges. Manufacturing processes need to be re-evaluated and any reliability issue needs to be addressed. In this study the effect of lead free solder on a reflow soldering process is investigated. Experimental design techniques were used to examine a reflow soldering process using the process parameters as experimental factors. The factors included the conveyor belt speed of the reflow oven and the preheat, soak and reflow temperatures of the temperature profile. Micro Ball Grid Array (EGA) packages were used as the test components. No standard method exists to assess the quality of EGA solder joints. Solder joint quality is normally assessed using lengthy reliability tests that measure joint strength. It is highly advantageous if a qualitative assessment method was available that could determine the joint quality. This study presents a scoring method that can be used to evaluate this solder joint quality quickly and inexpensively. EGA solder joint quality was assessed using x-ray and micro section inspection techniques. This qualitative data was scored and weighted. The weighted solder joint quality scores were statistically analysed to check for effect significance. It was found that conveyor belt speed had a statistically significant effect on the weighted score. The statistical approach was verified using residual analysis. The results of the experiment demonstrate that the scoring method is a practical way of assessing EGA solder joint quality. This paper presents a unique scoring method for assessing the joint quality of EGA packages

    The effect of the video game Quizlet on the acquisition of science vocabulary for children with learning disabilities

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    The purposes of this study were (a) to determine if using the video learning game Quizlet in a middle school resource classroom increases science vocabulary acquisition of students with learning disabilities, (b) to determine if using the video learning game Quizlet in a middle school resource classroom increases the student engagement/on-task behavior of students with learning disabilities, and (c) to evaluate student comfort and satisfaction in using the video learning game Quizlet in a middle school resource classroom. Six middle school students, three female and three male participated in the study. A single subject design with ABAB phases was utilized over eight weeks. Results show that all students increased their science vocabulary acquisition and increased their on-task behaviors. A follow-up student satisfaction survey determined that the intervention was acceptable to all students. Further research to assess the effects of Quizlet is recommended
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