1,190 research outputs found

    Risk Management Education for Kentucky Farm Women

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    This article describes how an agricultural and farm risk management education program, known as Annie’s Project, was adapted from a midwestern focus to meet the diversity of Kentucky agriculture and shares the results of a longer-term evaluation of the Kentucky program. The Annie’s Project program is geared specifically to the needs of farm women. The program adaption process, which began in late 2006, is detailed from inception through pilot testing to the full launch of the program. Over a four year period, the Kentucky Annie’s Project program reached 425 farm women in 41 of Kentucky’s 120 counties. The evaluation draws on the results of a questionnaire mailed to program participants 18 months to 5 years after programming. Participants reported statistically significant gains in all topical areas representing agricultural risk management education, including production, human resources, marketing, legal, and financial. Key actions which occurred as a result of participating in the program included increasing confidence in management abilities, reviewing personal/farm insurances policies, developing a network of peers and professionals, and using financial statements

    Studies on hormonal induction of embryonic erythropoiesis

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    It has been established that the hormone, erythropoietin, is concerned in the control of normal adult erythropoiesis in mammals; it is known to act by stimulating maturation of progenitor cells. The part played by erythropoietin during foetal life in not clear; its mode of action on sensitive cells is also uncertain. The hormone may be assayed in vitro by neorurin the incorporation of 59Po into protein-bound ham by erythroid sell cultures. The erythroid activity and response to erythropoietin of cells from rat yolk sac, fcetal liver and foetal spleen were investigated; similar studies were carried out on rabbit foetal liver cells. The pattern of in vivo activity and sensitivity to erythropoietin observed during gestation suggested that, in both species, foetal erythropoiesis was controlled, in part, by erythropoietin; it was concluded that erythropoietin, probably of foetal origin, controlled red cell production except during yolk sac erythropoiesie. In many mammals the foetus produces haemoglobin distinct from the adult haemoglobin. Using starch gel electrophoresis the nature of the haemoglobins in circulating cells during gestation of mouse and rabbit foetuses was determined. Two haemoglobins were found in the blood of young rabbit footless; three were found in young mouse foetuses. In both species these disappeared during gestation and were replaced by a single adult haemoglobin. The site of production of the different haemoglobins was determined by starch gel electro-phoresis of 59Fe-labelled haemoglobin synthesised by erythroid cells in vitro. Only foetal haemoglobins were made by mouse yolk sac cells while only adult haemoglobin was made by foetal liver cells. Erythropoietin, to which only foetal liver cells were sensitive, stimulated only adult haemoglobin synthesis; it did not appear to affect haemoglobin synthesis directly, in circulating cells. Two haemoglobins were found in the blood of young rat foetuses; three others appeared during the early stages of foetal liver erythropoiesis. After birth, the amount of one of the components first present decreased to very lom levels in adult animals. The relative rates of synthesis of the haemoglobins were characteristic of the stage of gestation and remained the same during much, if not all, of cell maturation. It was found that erythropoietin treatment of feetal or adult erythroid cells had only a quantitative effect on haemoglobin synthesis; it did not alter the relative amounts of each haemoglobin present. As in mouse, it appeared to have no direct effect on haemoglobin synthesis by circulating cells. The effects of inhibitors, colchicine, FUdR, aotinomycin D and puromycin, on the response to erythropoietin of mouse foetal liver cells indicated that syntheses of DNA, RNA and protein, but not cell division, were essential for erythropoietin induced haemoglobin synthesis. Further studies indicated that cells usually divided after erythropoietin treatment but that this wan not mandatory for haemoglobin synthesis. The technique was altered to measure synthesis of DNA, RNA and total protein, as well as haem synthesis after erythropoietin treatment. These studies, including the effect of inhibitors upon the response, suggested that the first detectable result of erythropoietin treatment was mRNA synthesis; this permitted protein synthesis which was essential for DNA synthesis. These events occurred very quickly and DNA synthesis doubled within 1 hr. of crythropcietin treatment. Afterwards, cell maturation, including haemoglobin synthesis, could proceed. The time-course of the response suggested that erythropoietin might stimulate maturing cells, capable of DNA synthesis, as well as progenitor cells; the responding cells, whatever their nature, appeared to be sensitive to erythropoietin during the G1 period of their cycle. These results were discussed in relation to in vitro studies on other differentiating cells

    Interactive effects of prey and p,p′-DDE on Burrowing Owl population dynamics

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    Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecological Applications 16 (2006): 666–677.We used population models to explore the effects of the organochlorine contaminant p,p'DDE and fluctuations in vole availability on the population dynamics of Burrowing Owls (Athene cunicularia). Previous work indicated an interaction between low biomass of voles in the diet and moderate levels of p,p'DDE in Burrowing Owl eggs that led to reproductive impairment. We constructed periodic and stochastic matrix models that incorporated three vole population states observed in the field: average, peak and crash years. We modeled varying frequencies of vole crash years and a range of impairment of owl demographic rates in vole crash years. Vole availability had a greater impact on owl population growth rate than reproductive impairment if vole populations peaked and crashed frequently. However, this difference disappeared as the frequency of vole crash years declined to once per decade. Fecundity, the demographic rate most affected by p,p'DDE, had less impact on population growth rate than adult or juvenile survival. A life table response experiment of time-invariant matrices for average, peak and crash vole conditions showed that low population growth under vole crash conditions was due to low adult and juvenile survival rates, whereas the extremely high population growth under vole peak conditions was due to increased fecundity. Our results suggest that even simple models can provide useful insights into complex ecological interactions. This is particularly valuable when temporal or spatial scales preclude manipulative experimental work in the field or laboratory.Field work was supported by grants from the U.S. Navy EFA West, California Department of Fish and Game, and the National Fish and Wildlife Foundation to D. K. Rosenberg. Analysis was supported in part by the U.S. Environmental Protection Agency (R-82908901-0)

    Are Boredom Prone Individuals Creative and Curious About Their Environment?

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    After controlling for overall personality characteristics, boredom proneness did not predict creativity, but did positively predict people’s motivation to seek out novel experiences and find answers to things they do not understand. Thus, future work should explore how to use these relationships to help individuals respond effectively to the experience of boredom.Knowledge Mobilization at York - York University’s Knowledge Mobilization Unit provides services for faculty, graduate students, community and government seeking to maximize the impact of academic research and expertise on public policy, social programming, and professional practice. This summary has been supported by the Office of the Vice-President Research and Innovation at York and project funding from SSHRC and CIHR. [email protected] www.researchimpact.c

    Nonprofit Partnerships in Extension Programming: A Pilot Study

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    Strategic collaboration between Extension faculty and nonprofit organizations has the potential to reduce costs, generate revenue, and improve programmatic outcomes for all involved. Through a mixed-methods pilot study, we examined how and to what extent such collaboration exists. Data sources included the National Center for Charitable Statistics, the Foundation Center, and results from a survey administered to county Extension faculty in one administrative district in Florida. Findings indicate that although Extension faculty partner with nonprofits, further development of these partnerships could lead to increased revenue generation and programmatic outcomes. Our methods and findings may help inform future research and development of strategic partnerships elsewhere within Extension

    Exploring the utility of the Multidimensional State Boredom Scale.

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    Background: State boredom–the experience of boredom in the moment – is related to a number of psychosocial issues. Until the recent creation of the Multidimensional State Boredom Scale (MSBS), research was constrained by the lack of a comprehensive, validated measure. However, the MSBS could benefit from further evaluation. Aim: To more thoroughly validate the MSBS. Methods: In two studies, participants were induced into a state of either boredom or non-boredom, and then completed the MSBS. Results: Discriminant analysis showed that the full MSBS was able to correctly classify 68.1% (Study 2) – 84.1% (Study 1) of participants into their experimental condition. Based on 14 further DA analysis, a subset of eight items (a potential short form) is proposed. Differential item functioning (Study 1) found only one item to which responding differed by gender. Discussion: Use of the MSBS, including the full scale versus the short form, is discussed. Which experiential components of boredom may be particularly important for classifying bored individuals, and the issue of variability across boredom manipulations, are also considered

    Alveolar macrophages lack CCR2 expression and do not migrate to CCL2

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    Background: The recruitment of mononuclear cells has important implications for tissue inflammation. Previous studies demonstrated enhanced CCR1 and CCR5 expression and decreased CCR2 expression during in vitro monocyte to macrophage differentiation. To date, no study examined the in vivo differences in chemokine receptor expression between human peripheral blood monocytes and alveolar macrophages. Methods: We examined the expression of these receptors in human peripheral blood monocytes and alveolar macrophages using microarray analysis, reverse-transcriptase PCR, flow cytometry and migration analyses. Results: In contrast to peripheral blood monocytes, alveolar macrophages did not express the CCL2 receptor, CCR2, and did not migrate toward CCL2. In contrast, monocytes and freshly isolated resident alveolar macrophages both migrated towards CCL3. However, up to 6-fold more monocytes migrated toward equivalent concentrations of CCL3 than did alveolar macrophages from the same donor. While peripheral blood monocytes expressed the CCL3 receptor, CCR1, alveolar macrophages expressed the alternate CCL3 receptor, CCR5. The addition of anti-CCR5 blocking antibodies completely abrogated CCL3-induced migration in alveolar macrophages, but did not affect the migration of peripheral blood monocytes. Conclusion: These data support the specificity of CCL2 to selectively drive monocyte, but not alveolar macrophage recruitment to the lung and CCR5 as the primary macrophage receptor for CCL3

    Polygenic risk of prediabetes, undiagnosed diabetes, and incident type 2 diabetes stratified by diabetes risk factors

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    Context: Early diagnosis of type 2 diabetes is crucial to reduce severe comorbidities and complications. Current screening recommendations for type 2 diabetes include traditional risk factors, primarily body mass index (BMI) and family history, however genetics also plays a key role in type 2 diabetes risk. It is important to understand whether genetic predisposition to type 2 diabetes modifies the effect of these traditional factors on type 2 diabetes risk. Objective: This work aimed to investigate whether genetic risk of type 2 diabetes modifies associations between BMI and first-degree family history of diabetes with 1) prevalent prediabetes or undiagnosed diabetes; and 2) incident confirmed type 2 diabetes. Methods: We included 431 658 individuals aged 40 to 69 years at baseline of multiethnic ancestry from the UK Biobank. We used a multiethnic polygenic risk score for type 2 diabetes (PRST2D) developed by Genomics PLC. Prediabetes or undiagnosed diabetes was defined as baseline glycated hemoglobin greater than or equal to 42 mmol/mol (6.0%), and incident type 2 diabetes was derived from medical records. Results: At baseline, 43 472 participants had prediabetes or undiagnosed diabetes, and 17 259 developed type 2 diabetes over 15 years follow-up. Dose-response associations were observed for PRST2D with each outcome in each category of BMI or first-degree family history of diabetes. Those in the highest quintile of PRST2D with a normal BMI were at a similar risk as those in the middle quintile who were overweight. Participants who were in the highest quintile of PRST2D and did not have a first-degree family history of diabetes were at a similar risk as those with a family history who were in the middle category of PRST2D. Conclusion: Genetic risk of type 2 diabetes remains strongly associated with risk of prediabetes, undiagnosed diabetes, and future type 2 diabetes within categories of nongenetic risk factors. This could have important implications for identifying individuals at risk of type 2 diabetes for prevention and early diagnosis programs
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