7,527 research outputs found

    Avenues of future research in homotransplantation of the liver with particular reference to hepatic supportive procedures, antilymphocyte serum, and tissue typing

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    Three general areas of research which bear on the developing field of liver transplantation are reviewed. These are: (1) the prospects of obtaining better immunosuppression with particular reference to heterologous antilymphocyte serum; (2) the possible use of antigen matching technics as an advanced indicator of donorrecipient histocompatibility; (3) a simlified system of extracorporeal transplntation designed to provide teporary hepatic support. © 1966

    Photoelectron diffraction: from phenomenological demonstration to practical tool

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    The potential of photoelectron diffraction—exploiting the coherent interference of directly-emitted and elastically scattered components of the photoelectron wavefield emitted from a core level of a surface atom to obtain structural information—was first appreciated in the 1970s. The first demonstrations of the effect were published towards the end of that decade, but the method has now entered the mainstream armoury of surface structure determination. This short review has two objectives: First, to outline the way that the idea emerged and the way this evolved in my own collaboration with Neville Smith and his colleagues at Bell Labs in the early years: Second, to provide some insight into the current state-of-the art in application of (scanned-energy mode) photoelectron diffraction to address two key issue in quantitative surface structure determination, namely, complexity and precision. In this regard a particularly powerful aspect of photoelectron diffraction is its elemental and chemical-state specificity

    Scholastic Records and Personality and Character Traits of the Public-school Trained and the Parochial-trained Students of the Graduating Class of 1952, Central High School, Aberdeen, South Dakota

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    For many years at Aberdeen, South Dakota, a difference of opinion has existed regarding the relative academic achievement, rank in class, and social adjustments of the students in the public school system and parochial -school system. The advocates of the two school systems have base their opinions on observations only and without the benefit of statistical evidence. To present impartial evidence upon which the proponents may form a more logical conclusion was the purpose of the investigator. The purpose of this study was to compare the students who had received the first nine years of their training in a parochial school with those who had received their training in a public school to see if there were any statistical differences in their performance during the last three years of their high-school training in the public school. They were compared in mental ability, academic achievement, rank in class, and social ability development by the investigation cf the high school records of the graduating class of 1952. The school performances made by these students grouped into their respective origins were the records used in making the comparisons

    Textual affinities of Papyrus Bodmer XV (p75)

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    https://place.asburyseminary.edu/ecommonsatsdissertations/2093/thumbnail.jp

    Adsorbate-induced surface stress, surface strain and surface reconstruction : S on Cu(100) and Ni(100)

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    Density functional theory (DFT) calculations have been applied to investigate the known difference in behaviour of S adsorption on Cu(100) and Ni(100). Both surfaces form a 0.25 ML (2 × 2) adsorption phase, but while at higher coverage a 0.5 ML c(2 × 2) phase forms on Ni(100), on Cu(100) only a reconstructed 0.47 ML (√17 × √17)R14° structure occurs. Calculations of the energy, structure, and surface stress of (2 × 2) and c(2 × 2) phases on both substrates show there is an energy advantage on both surfaces to form the higher coverage phase, but that both surfaces show local surface strain around the S atoms in the (2 × 2) phase, a phenomenon previously investigated only on Cu(100). More than forty different structural models of the Cu(100)(√17 × √17)R14°-S phase have been investigated. The pseudo-(100)c(2 × 2) structure previously proposed, containing 16 Cu adatoms per unit mesh in the reconstructed layer, is found to be less energetically favourable than many other possible structures, even after taking account of local structural relaxations. Significantly more favourable is a structure with 12 Cu adatoms per (√17 × √17)R14° unit mesh, previously proposed on the basis of scanning tunnelling microscopy (STM), and found to yield simulated STM images in good agreement with experiment. This model has all S atoms in local 4-fold coordinated hollows relative to the Cu atoms below, half being located above Cu adatoms with the remainder lying above the underlying outermost substrate layer. However, an alternative model with only 4 Cu adatoms and with half the S atoms at 3-fold coordinated sites on the periphery of the Cu adatom cluster, has an even lower energy and gives simulated STM images in excellent agreement with experiment
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