125 research outputs found

    Cultural Resource Survey of College Heights in Fredericksburg, Virginia

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    This cultural resource survey was conducted to determine whether or not the College Heights neighborhood in Fredericksburg, Virginia contains structures that have maintained their architectural integrity. First, I surveyed the 302 buildings that comprise the College Heights neighborhood. Next, I prepared a summary of the basic history of the area using sources from the local libraries and online. Finally, I analyzed the data from the survey and formed my recommendations. The data showed that the majority of the buildings in the College Heights neighborhood could be considered architecturally significant as they were good examples of mid-20th century modern architecture. My final recommendation was that further study was needed into the time period of the 1940s to the 1960s to see whether this neighborhood was historically significant during that period as well, and therefore eligible for the National Register

    Mass Transfer by Stellar Wind

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    I review the process of mass transfer in a binary system through a stellar wind, with an emphasis on systems containing a red giant. I show how wind accretion in a binary system is different from the usually assumed Bondi-Hoyle approximation, first as far as the flow's structure is concerned, but most importantly, also for the mass accretion and specific angular momentum loss. This has important implications on the evolution of the orbital parameters. I also discuss the impact of wind accretion, on the chemical pollution and change in spin of the accreting star. The last section deals with observations and covers systems that most likely went through wind mass transfer: barium and related stars, symbiotic stars and central stars of planetary nebulae (CSPN). The most recent observations of cool CSPN progenitors of barium stars, as well as of carbon-rich post-common envelope systems, are providing unique constraints on the mass transfer processes.Comment: Chapter 7, in Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G. Beccari (Eds), Astrophysics and Space Science Library, Springe

    Urolitíase: estudo comparativo em bovinos Guzerá oriundos de propriedades com e sem o problema

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    Diversos fatores podem contribuir para a formação de cálculos urinários, dentre estes, o desequilíbrio nutricional e a dureza da água consumida pelos ruminantes. O objetivo deste estudo foi identificar as características de propriedades que predispõem à urolitíase, através da avaliação da água, da dieta e determinações séricas e urinárias de cálcio, fósforo, magnésio, cloretos, sódio, potássio, cálculo da excreção fracionada (EF) dos eletrólitos, e da creatinina, proteína total, albumina e globulinas séricas. Foram colhidas amostras de sangue e urina de bovinos, Guzerá, criados semi intensivamente, distribuídos por dois grupos. O primeiro denominado grupo urolitíase (Gu), composto de animais com histórico, sinais clínicos e confirmação ultrassonográfica que apresentavam urolitíase; o segundo: grupo controle (Gc), sem histórico, nem sintomas da doença. Os bovinos do grupo urolitíase consumiam água com dureza total na concentração de 166,0mg CaCO3/L. A dieta dos animais do Gu apresentava maior concentração de fósforo e relação Ca:P inadequada. Os teores de fósforo sérico e urinário dos animais do Gu foram maiores do que os do Gc, assim como a concentração sérica de magnésio (p0,05), mas houve diminuição significativa nas EFs de magnésio, cloretos e de potássio do grupo urolitíase (p<0,05). A união destes fatores contribuiu para a ocorrência da urolitíase, sendo dureza total da água e a alta concentração de fósforo na dieta os principais fatores na gênese dos cálculos em bovinos

    Discourse Analysis and Terminology in Languages for Specific Purposes

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    Aquest importantíssim recull conté estudis i reflexions sobre temes rellevants en la recerca sobre LSP: anglès mèdic, el llenguatge de la publicitat i periodístic, telecomunicacions i terminologia informàtica, llenguatge comercial i jurídic... Malgrat que gran part dels treballs aplegats es refereixen a l'anglès, també hi ha que tracten l'alemany, francès i altres llengües. Conté textos en anglès, francés, portuguès i castellà

    The Role of Plants in the Effects of Global Change on Nutrient Availability and Stoichiometry in the Plant-Soil System  

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    Static stretching versus proprioceptive neuromuscular facilitation post cervical spine adjustment for chronic posterior mechanical neck pain

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    M.Tech. (Chiropractic)Purpose: The aim of this comparative study was to compare the effects of spinal adjustment with static passive stretch to the cervical spine, and spinal adjustment with proprioceptive neuromuscular facilitation to the cervical spine in the treatment of chronic posterior neck pain with regards to pain, disability and cervical spine range of motion. These effects were based on a questionnaire consisting of a Numerical Pain Rating Scale, a Vernon-Mior Neck Pain and Disability Index Questionnaire, and on cervical spine ROM readings taken using an analogous cervical spine ROM inclinometer. The questionnaire was completed and the ROM readings taken prior to treatment at the first, fourth and seventh consultation. Method: Thirty participants who met the inclusion criteria were randomly diversified in number and gender between two groups of equal size (15 participants each). Group one received spinal adjustment/s to restricted cervical spine joints followed by static passive stretching. The second group received spinal adjustment/s to restricted cervical spine joints followed by proprioceptive neuromuscular facilitation. Participants were treated six times out of a total of seven sessions, over a maximum three week period. Procedure: Subjective data was collected at the beginning of the first and fourth consultations, as well as on the seventh consultation by means of a Numerical Pain Rating Scale (NPRS) and a Vernon-Mior Neck Pain and Disability Questionnaire in order to assess pain and disability levels. Objective data was collected at the beginning of the first and fourth session, as well as on the seventh consultation by means of a cervical spine range of motion inclinometer in order to assess cervical spine range of motion. Analysis of collected data was performed by a statistician. Results: Clinically significant improvements in group 1 and group 2 were noted over the duration of the study with reference to pain, disability, and cervical spine range of motion. Statistically significant changes were noted in group 1 and group 2 with reference to pain, disability, and cervical spine range of motion over time except for cervical spine extension range of motion
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