17,667 research outputs found

    FaCE: a tool for Three Body Faddeev calculations with core excitation

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    FaCE is a self contained programme, with namelist input, that solves the three body Faddeev equations. It enables the inclusion of excitation of one of the three bodies, whilst the other two remain inert. It is particularly useful for obtaining the binding energies and bound state structure compositions of light exotic nuclei treated as three-body systems, given the three effective two body interactions. A large variety of forms for these interactions may be defined, and supersymmetric transformations of these potentials may be calculated whenever two body states need to be removed due to Pauli blocking.Comment: 19 pg, 3 figs, program available for download from ftp://ftp.ph.surrey.ac.uk/pub/thompson/face

    Charge Measurement of Dust Particles on Photovoltaic Module

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    A Numerical Investigation of Thermal Airflows over Strip Fin Heat Sinks

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    The benefits of using strip fin heat sinks (SFHSs) where the cross-sectional aspect ratio of the fins lie between those for plate fins (high aspect ratio) and pins fins (aspect ratio≈ 1) are explored computationally, using a conjugate heat transfer model. Results show that strip fins provide another effective means of enhancing heat transfer, especially when staggered arrangements of strip fins are used. A detailed parameter investigation demonstrates that perforating the strip fins provide additional improvements in terms of enhanced heat transfer, together with reduced pressure loss and heat sink mass. Results are also given which show that, for practical applications in micro-electronics cooling, perforated SFHSs offer important benefits as a means of achieving smaller processor temperatures for reduced mechanical power consumption

    S13RS SGR No. 16 (Tuition)

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    A RESOLUTION To Urge and Request the State Legislature Governing the State of Louisiana to Relinquish Tuition Control of Public Universities in the State to each Respective Institutio

    In vitro Culture of Several Rice Cultivars

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    Tissue culture methods have been established to regenerate certain rice (Oryza sativa L) cultivars, but regeneration of the rice cultivars widely grown in Arkansas has not been reported. This study has established an in vitroculture for the rice cultivars \u27Nortai\u27, \u27Starbonnet\u27, \u27Mars\u27, Tebonnet\u27, \u27Newbonnet\u27, and \u27Lemont\u27. Callus was induced in the dark at either 20 or 28 C from dehusked seeds cultured on Murashige and Skoog (MS) medium (Murashige and Skoog, 1962) containing 40 g L^-1 sucrose, 10 g L^1 agar, 0.5, 1.0, or 2.0 mg L^-1 1 2,4-dichlorophenoxyacetic acid (2,4-D) and adjusted to pH 5.7. After four weeks the calli were weighed, transferred onto MS medium containing no 2,4-D, and maintained in a 1 2-h photoperiod (65 uE m^-2 s^-1) at 25 ± 2 C to induce plant regeneration. Callus production was best when cultured on a medium containing 1.0 mg L^-1 2,4-D and incubated at 28 C. Plant regeneration was observed two to four weeks later. The percentage of calli regenerating platlets varied with the cultivar and the callus induction treatment. Callus induction at 20 C on a medium with a 2,4-D level less than 2.0 mg L^-1 enhanced the regenerability of most cultivars. Regenerates were transplanted to soil and grow normally to maturity. This system can be helpful in improving rice cultivars with tissue culture techniques such as somaclonal variant selection and somatic hybridization

    Non-adiabatic corrections to elastic scattering of halo nuclei

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    We derive the formalism for the leading order corrections to the adiabatic approximation to the scattering of composite projectiles. Assuming a two-body projectile of core plus loosely-bound valence particle and a model (the core recoil model) in which the interaction of the valence particle and the target can be neglected, we derive the non-adiabatic correction terms both exactly, using a partial wave analysis, and using the eikonal approximation. Along with the expected energy dependence of the corrections, there is also a strong dependence on the valence-to-core mass ratio and on the strength of the imaginary potential for the core-target interaction, which relates to absorption of the core in its scattering by the target. The strength and diffuseness of the core-target potential also determine the size of the corrections. The first order non-adiabatic corrections were found to be smaller than qualitative estimates would expect. The large absorption associated with the core-target interaction in such halo nuclei as Be11 kills off most of the non-adiabatic corrections. We give an improved estimate for the range of validity of the adiabatic approximation when the valence-target interaction is neglected, which includes the effect of core absorption. Some consideration was given to the validity of the eikonal approximation in our calculations.Comment: 14 pages with 10 figures, REVTeX4, AMS-LaTeX v2.13, submitted to Phys. Rev.

    ICT Women Professionals\u27 Perceptions of Workplace Ethical Problems: A Quantitative Survey

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    Which ethical problems are most frequently experienced by ICT women professionals? Which ethical problems experienced by ICT women professionals are of most concern to them as individuals? A quantitative survey of 2,315 Australian ICT professionals of whom 15.4 percent were females revealed that the top 15 most frequently faced ethical problems that the females identified were nearly identical to those identified by males. Of these 15 problems, five were judged to affect females personally. These are overworking staff, blaming others for own mistakes, bullying, unprofessional behavior, and discrimination. Of these five problems, gender only predicted three problems that affect females personally, namely overworking staff, bullying, and discrimination, which women also believed occur more frequently than other problems. Compared to males, a higher percentage of females who selected overworking staff, bullying, and discrimination believed unethical behavior either occurs occasionally or frequently. More importantly, a higher proportion of females compared to males (especially managers and consultants) witnessed or experienced staff being overworked in their workplaces. Similarly, a higher proportion of females compared to males (especially managers and consultants) witnessed or experienced bullying in their workplaces. Finally, a higher proportion of females compared to males (especially man- agers and consultants) witnessed or experienced discrimination in their workplaces. The fact that female consultants and mangers selected these problems as of most concern to them may suggest that the experienced women professionals have a greater concern about these problems than women in junior roles. Regardless, these results are both surprising and concerning and therefore deserving of attention in a future study

    Noninvasive testing and surrogate markers in invasive fungal diseases

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    Invasive fungal infections continue to increase as at-risk populations expand. The high associated morbidity and mortality with fungal diseases mandate the continued investigation of novel antifungal agents and diagnostic strategies that include surrogate biomarkers. Biologic markers of disease are useful prognostic indicators during clinical care, and their use in place of traditional survival end points may allow for more rapid conduct of clinical trials requiring fewer participants, decreased trial expense, and limited need for long-term follow-up. A number of fungal biomarkers have been developed and extensively evaluated in prospective clinical trials and small series. We examine the evidence for these surrogate biomarkers in this review and provide recommendations for clinicians and regulatory authorities
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