Polarization enhancement in d⃗(p⃗\vec{d}(\vec{p},2^2He)n reaction: Nuclear teleportation

I show that an experimental technique used in nuclear physics may be successfully applied to quantum teleportation (QT) of spin states of massive matter. A new non-local physical effect the `quantum-teleportation-effect' is discovered for the nuclear polarization measurement. Enhancement of the neutron polarization is expected in the proposed experiment for QT that discriminates {\it only} one of the Bell states.Comment: 3 pages, accepted for publication in J. Phys.

Master of Science

thesisThe goal of the Atwood group is to improve student success in general chemistry at the University of Utah. To accomplish this goal, we created a system of pretests that allows students to practice before the actual exam and analyze their pretest scores to assess their ability prior to taking an actual exam. We developed a method to analyze an individual student's proficiency on the topics that make up a test utilizing Item Response Theory (IRT). This had not been done previously at the individual student level. We used this information to provide students with feedback on where to focus their studies. We hoped that the combination of extra practice, the opportunity for students to check their own progress and detailed feedback would result in improved outcomes on the exams. After implementing this pretest system, equated student abilities on the midterm exams increased significantly compared to the previous year when the pretest system was not in place. The particular effect of the topic feedback was also studied by comparison with a control class but results were inconclusive

Thermal conductivity of sodium chloride within the temperature range 375°K to 637°K

The transport of heat in dielectric solids is attributed entirely to lattice waves whereas in metals there is in addition a transfer by the flow of valence electrons. The thermal conductivity of a non-electrical-conductor is limited by a number of scattering processes giving rise to thermal resistances. Scattering results from impurity atoms and from vacancies and dislocations within the crystal structure and from the interaction of the lattice vibrations amongst themselves. Scattering also occurs at the boundaries of the crystal. The thermal resistance of an ideal crystal at low temperatures is due almost entirely to boundary scattering and at high temperatures is due primarily to anharmonic coupling. With increasing temperature the former decreases and the latter increases and consequently the thermal conductivity passes through a maximum. In 1914, Debye showed from theoretical considerations that the conductivity is approximately proportional to 1/T for temperatures above the region of maximum conductivity. A more recent and rigorous treatment of the problem by Peierls, using quantum mechanics, resulted in the same temperature dependence. In 1941, Pomeranchuk, published a paper showing the necessity of including an additional term in the interaction potential. His calculations showed a mixed type of conductivity proportional to 1/T and 1/[T3/2]. Although a considerable amount of experimental work has been done in the past, most of it has dealt with temperatures below the boiling point of water. Consequently the measurements of thermal conductivities above this temperature have not been sufficiently extensive for a detailed comparison between theory and experiment to be made. The wide discrepancy in the results of early experimenters is believed to be due largely to the defects and impurities of the various samples used. Thus it seems that if a comparison between the experimental and theoretical values is to be made, the conductivities of a single crystal must be determined over a rather large temperature range. The ultimate goal of this project is to investigate the temperature dependence of the conductivity of various alkali halides up to their melting points. Equipment was available at the beginning of this investigation that had been previously operated by Weisbrod and Brown. The apparatus was designed to measure absolute conductivities rather than relative ones. Near perfect cylindrical crystals of sodium chloride whose length and diameter were approximately 1.2 and 1.5 centimeters respectively were available. The most apparent deficiency of the equipment was that of background (explained elsewhere). The error in the calculated conductivities resulting from this effect increased with increasing temperature and amounted to as much as 8% at 300°C as was shown by Brown. The purpose of this investigation was to improve the operating performance of the equipment and to reproduce and extend the work done by Weisbrod and Brown --Introduction, pages 1-3

Upper Yilgarn catchment appraisal 2005

Soil degradation on farmland reduces agricultural production and will often lead to damage to natural resources such as remnant vegetation and waterways, as well as to infrastructure, including roads and townsites. This report provides current information on the land degradation status for the Upper Yilgarn Catchment area in Western Australia by outlining: condition of the soils, hydrology, natural vegetation, farming systems and agricultural production and risks to natural resources

Important parameters in low noise planar triode design

The purpose of this work is to develop pertinent expressions relating important tube parameters to noise performance of planar triodes. To this end tubes with various grid-cathode and grid-plate spacings will be constructed and their noise performance determined by measurement. The noise performance will then be compared with theory

What are the barriers and facilitators to implementing Collaborative Care for depression? A systematic review.

Background: Collaborative Care is an evidence-based approach to the management of depression within primary care services recommended within NICE Guidance. However, uptake within the UK has been limited. This review aims to investigate the barriers and facilitators to implementing Collaborative Care. Methods: A systematic review of the literature was undertaken to uncover what barriers and facilitators have been reported by previous research into Collaborative Care for depression in primary care. Results: The review identified barriers and facilitators to successful implementation of Collaborative Care for depression in 18 studies across a range of settings. A framework analysis was applied using the Collaborative Care definition. The most commonly reported barriers related to the multi-professional approach, such as staff and organisational attitudes to integration, and poor inter-professional communication. Facilitators to successful implementation particularly focussed on improving inter-professional communication through standardised care pathways and case managers with clear role boundaries and key underpinning personal qualities. Limitations: Not all papers were independent title and abstract screened by multiple reviewers thus limiting the reliability of the selected studies. There are many different frameworks for assessing the quality of qualitative research and little consensus as to which is most appropriate in what circumstances. The use of a quality threshold led to the exclusion of six papers that could have included further information on barriers and facilitators. 3 Conclusions: Although the evidence base for Collaborative Care is strong, and the population within primary care with depression is large, the preferred way to implement the approach has not been identified