3,497 research outputs found

    Some effects of the species and stage of maturity of plants on the forage consumption of grazing steers of various weights

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    "All of the data in this bulletin, except the data for the grazing season of 1935, were submitted by the senior author to the Graduate School of the University of Illinois, June, 1935, in partial fulfillment of the requirements for the degree of doctor of philosophy in animal husbandry."--P. 443.Cover title.Bibliography: p. 506-508

    On Taungurung Land

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    On Taungurung Land: Sharing History and Culture is the first monograph to examine how the Taungurung Nation of central Victoria negotiated with protectors and pastoralists to retain possession of their own country for as long as possible. Historic accounts, to date, have treated the histories of Acheron and Mohican Aboriginal stations as preliminary to the establishment of the more famous Coranderrk on Wurundjeri land. Instead of 'rushing down the hill' to Coranderrk, this book concentrates upon the two foundational Aboriginal stations on Taungurung Country. A collaboration between Elder Uncle Roy Patterson and Jennifer Jones, the book draws upon Taungurung oral knowledge and an unusually rich historical record. This fine-grained local history and cultural memoir shows that adaptation to white settlement and the preservation of culture were not mutually exclusive. Uncle Roy shares generational knowledge in this book in order to revitalise relationships to place and establish respect and mutual practices of care for Country

    Bugs and Brains: The Microbiome & Dementia

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    Interest in the microbiome and its correlation with different neurological diseases has grown significantly over the past decade. The gut microbiome contains a vast array of diverse organisms living in the gastrointestinal (GI) tract. Predominantly composed of bacteria, the gut microbiome helps regulate homeostasis and metabolism in the host, aiding in immune system development as well as vitamin and nutrient absorption. Studies suggest that, in addition to providing humans with these physiological benefits, the gut microbiome is also linked to and communicates with the brain via the gut-brain axis (GBA). Long-standing research on the GBA has demonstrated that the GI tract and the central nervous system are interconnected through both neurological and immunological signaling pathways. Recent research is expanding our understanding of the microbiome and the GBA, revealing correlations between the microbiome impact on the GBA and neurological conditions such as Alzheimer’s dementia and Lewy body dementia, going as far as to identify and highlight specific microbial species that may serve as risk or protective factors for various forms of dementia. This letter aims to highlight the current findings and recommend the use of tools such as microbial cell-free DNA testing to gain a better understanding of the role of gut dysbiosis in dementia patients

    The space density of cataclysmic variables: constraints from the ROSAT North Ecliptic Pole Survey

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    We use the ROSAT North Ecliptic Pole (NEP) survey to construct a small, but purely X-ray flux-limited sample of cataclysmic variable stars (CVs). The sample includes only 4 systems, 2 of which (RX J1715.6+6856 and RX J1831.7+6511) are new discoveries. We present time-resolved spectroscopy of the new CVs and measure orbital periods of 1.64 \pm 0.02 h and 4.01\pm 0.03 h for RX 1715.6+6856 and RX J1831.7+6511, respectively. We also estimate distances for all the CVs in our sample, based mainly on their apparent brightness in the infrared. The space density of the CV population represented by our small sample is (1.1 +2.3/-0.7) 10^-5 pc^-3. We can also place upper limits on the space density of any sub-population of CVs too faint to be included in the NEP survey. In particular, we show that if the overall space density of CVs is as high as 2 10^-4 pc^-3 (as has been predicted theoretically), the vast majority of CVs must be fainter than L_X \simeq 2 10^29 erg/s.Comment: 11 pages, 7 figure, accepted for publication in MNRA

    Lesbian, Gay, Bisexual, and Transgender (LGBT) Issues in Dental School Environments: Dental Student Leaders’ Perceptions

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    The objectives of the study reported in this article were to assess dental student leaders’ perceptions of educational efforts concerning lesbian, gay, bisexual, and transgender (LGBT) topics and the cultural climate concerning LGBT issues in dental schools in the United States and Canada. In addition, the perceptions of student leaders who self‐identified as belonging to the LGBT community and of students with a heterosexual orientation were compared. Data were collected from 113 dental student leaders from twenty‐seven dental schools in the United States and three in Canada. Fifty student leaders were females, and sixty‐two were males. Only 13.3 percent of the respondents agreed that their dental education prepared them well to treat patients from LGBT backgrounds. The more the student leaders believed that their university has an honest interest in diversity, the better they felt prepared by their dental school program to treat patients from LGBT backgrounds (r=.327; p<.001). The better they felt prepared, the more they perceived the clinic environment as sensitive and affirming for patients with different sexual orientations (r=.464; p<.001). The more they reported that dental schools’ administrations create a positive environment for students with LGBT orientations, the more they agreed that persons can feel comfortable regardless of their sexual orientation (r=.585; p<.001). In conclusion, the findings indicate that dental school administrators play an important role in ensuring that future care providers are well prepared to treat patients from LGBT backgrounds and that staff, faculty, students, and patients from these backgrounds are not discriminated against.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153661/1/jddj002203372009731tb04643x.pd

    Allelic variants between mouse substrains BALB/cJ and BALB/cByJ influence mononuclear cardiomyocyte composition and cardiomyocyte nuclear ploidy.

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    Most mouse cardiomyocytes (CMs) become multinucleated shortly after birth via endoreplication and interrupted mitosis, which persists through adulthood. The very closely related inbred mouse strains BALB/cJ and BALB/cByJ differ substantially (6.6% vs. 14.3%) in adult mononuclear CM level. This difference is the likely outcome of a single X-linked polymorphic gene that functions in a CM-nonautonomous manner, and for which the BALB/cByJ allele is recessive to that of BALB/cJ. From whole exome sequence we identified two new X-linked protein coding variants that arose de novo in BALB/cByJ, in the genes Gdi1 (R276C) and Irs4 (L683F), but show that neither affects mononuclear CM level individually. No BALB/cJ-specific X-linked protein coding variants were found, implicating instead a variant that influences gene expression rather than encoded protein function. A substantially higher percentage of mononuclear CMs in BALB/cByJ are tetraploid (66.7% vs. 37.6% in BALB/cJ), such that the overall level of mononuclear diploid CMs between the two strains is similar. The difference in nuclear ploidy is the likely result of an autosomal polymorphism, for which the BALB/cByJ allele is recessive to that of BALB/cJ. The X-linked and autosomal genes independently influence mitosis such that their phenotypic consequences can be combined or segregated by appropriate breeding, implying distinct functions in karyokinesis and cytokinesis
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