2,658 research outputs found
The Status of Women Leaders in Utah Education
In September of 2013, the Center for American Progress released a report titledâ The State of Women in America: A 50- State Analysis of How Women Are Faring Across the Nation.â The report ranked Utah last of all 50 states in terms of women holding positions of decision making and leadership. Because the focus was solely on the percentage of women in elected office and private sector management positions, we determined that a more detailed look at the status of women and leadership in various sectors within the state would be useful. This is the third of four 2014 briefs, and it focuses on the status of women leaders in Utah education (higher and public Kâ12). The previous briefs highlighted data on women in Utah politics and nonprofit organizations, and the remaining one will focus on business. Each compares Utah data with national data and reviews applicable literature
The Status of Women Leaders in Utah Nonprofits
In September 2013, the Center for American Progress released a report titled â The State of Women in America: A 50- State Analysis of How Women Are Faring Across the Nation.â This report ranks Utah last of all 50 states in terms of women being in positions of decision making and leadership. Although the focus is solely on the percentage of women in elected office and private sector management positions, we feel that a more detailed look on the status of women in leadership in various sectors within the state would be useful. This is the second of four 2014 briefs, each of which compares national data with Utah data and provides a pertinent literature review. The first provides data on women in Utah politics; subsequent ones will focus on women leaders in education and business. This brief focuses on the status of women leaders in Utah nonprofit organizations
Alterations of ExcitationâContraction Coupling and Excitation Coupled Ca2+ Entry in Human Myotubes Carrying CAV3 Mutations Linked to Rippling Muscle Disease
Rippling muscle disease is caused by mutations in the gene encoding caveolin-3 (CAV3), the muscle-specific isoform of the scaffolding protein caveolin, a protein involved in the formation of caveolae. In healthy muscle, caveolin-3 is responsible for the formation of caveolae, which are highly organized sarcolemmal clusters influencing early muscle differentiation, signalling and Ca2+ homeostasis. In the present study we examined Ca2+ homeostasis and excitationâcontraction (E-C) coupling in cultured myotubes derived from two patients with Rippling muscle disease with severe reduction in caveolin-3 expression; one patient harboured the heterozygous c.84C>A mutation while the other patient harbored a homozygous splice-site mutation (c.102+ 2T>C) affecting the splice donor site of intron 1 of the CAV3 gene. Our results show that cells from control and rippling muscle disease patients had similar resting [Ca2+]i and 4-chloro-m-cresol-induced Ca2+ release but reduced KCl-induced Ca2+ influx. Detailed analysis of the voltage-dependence of Ca2+ transients revealed a significant shift of Ca2+ release activation to higher depolarization levels in CAV3 mutated cells. High resolution immunofluorescence analysis by Total Internal Fluorescence microscopy supports the hypothesis that loss of caveolin-3 leads to microscopic disarrays in the colocalization of the voltage-sensing dihydropyridine receptor and the ryanodine receptor, thereby reducing the efficiency of excitationâcontraction coupling. Hum Mutat 32:309â317, 2011. Š 2011 Wiley-Liss, Inc
Linguistics
Contains research objectives and reports on five research projects.National Institutes of Health (Grant 1 P01 MH-13390-02
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Use of Japanese Encephalitis Vaccine in US Travel Medicine Practices in Global TravEpiNet
Few data regarding the use of Japanese encephalitis (JE) vaccine in clinical practice are available. We identified 711 travelers at higher risk and 7,578 travelers at lower risk for JE who were seen at US Global TravEpiNet sites from September of 2009 to August of 2012. Higher-risk travelers were younger than lower-risk travelers (median age = 29 years versus 40 years, P < 0.001). Over 70% of higher-risk travelers neither received JE vaccine during the clinic visit nor had been previously vaccinated. In the majority of these instances, clinicians determined that the JE vaccine was not indicated for the higher-risk traveler, which contradicts current recommendations of the Advisory Committee on Immunization Practices. Better understanding is needed of the clinical decision-making regarding JE vaccine in US travel medicine practices
HST/NICMOS Imaging of Disks and Envelopes Around Very Young Stars
We present HST/NICMOS observations with 0.1" (15 AU) resolution of six young
stellar objects in the Taurus star-formation region. The targets of our survey
are three Class I IRAS sources (IRAS 04016+2610, IRAS 04248+2612, and IRAS
04302+2247) and three low-luminosity stars (DG Tau B, Haro 6-5B, and CoKu
Tau/1) associated with Herbig Haro jets. The broad-band images show that the
near-infrared radiation from these sources is dominated by light scattered from
dusty circumstellar material distributed in a region 10 - 15 times the size of
our solar system. Although the detailed morphologies of the individual objects
are unique, the observed young stellar objects share common features. All of
the circumstellar reflection nebulae are crossed by dark lanes from 500 - 900
AU in extent and from less than 50 to 350 AU in apparent thickness. The
absorption lanes extend perpendicular to known optical and millimeter outflows
in these sources. We interpret the dark lanes as optically thick circumstellar
disks seen in silhouette against bright reflection nebulosity. The bipolar
reflection nebulae extending perpendicular to the dust lanes appear to be
produced by scattering from the upper and lower surfaces of the disks and from
dusty material within or on the walls of the outflow cavities. Out of five
objects in which the central source is directly detected, two are found to be
subarcsecond binaries. This mini-survey is the highest resolution near-infrared
study to date of circumstellar environments around solar-type stars with age <=
1 Myr.Comment: 34 pages, 4 figures; also available at
http://spider.ipac.caltech.edu/staff/brandner/topics/disks/disks.html ;
accepted for publication in AJ (March 1999 issue
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Objective and perceived wildfire risk and its influence on private forest landownersâ fuel reduction activities in Oregonâs (USA) ponderosa pine ecoregion
Policymakers seek ways to encourage fuel reduction among private forest landowners to augment similar efforts on federal and state lands. Motivating landowners to contribute to landscape-level wildfire protection requires an understanding of factors that underlie landowner behaviour regarding wildfire. We developed a conceptual framework
describing landownersâ propensity to conduct fuel reduction as a function of objective and subjective factors relating to
wildfire risk. We tested our conceptual framework using probit analysis of empirical data from a survey of non-industrial
private forest landowners in the ponderosa pine (Pinus ponderosa) region of eastern Oregon (USA). Our empirical results
confirm the conceptual framework and suggest that landownersâ perceptions of wildfire risk and propensity to conduct fuel
treatments are correlated with hazardous fuel conditions on or near their parcels, whether they have housing or timber
assets at risk, and their past experience with wildfire, financial capacity for conducting treatments and membership in
forestry and fire protection organisations. Our results suggest that policies that increase awareness of hazardous fuel
conditions on their property and potential for losses in residential and timber assets, and that enhance social networks
through which awareness and risk perception are formed, could help to encourage fuel reduction among private forest
landowners.Keywords: wildlandâurban interface, landscape models, non-industrial private forest landowners, wildfire risk, fuel treatment
Intronic Non-CG DNA hydroxymethylation and alternative mRNA splicing in honey bees
Abstract
Background
Previous whole-genome shotgun bisulfite sequencing experiments showed that DNA cytosine methylation in the honey bee (Apis mellifera) is almost exclusively at CG dinucleotides in exons. However, the most commonly used method, bisulfite sequencing, cannot distinguish 5-methylcytosine from 5-hydroxymethylcytosine, an oxidized form of 5-methylcytosine that is catalyzed by the TET family of dioxygenases. Furthermore, some analysis software programs under-represent non-CG DNA methylation and hydryoxymethylation for a variety of reasons. Therefore, we used an unbiased analysis of bisulfite sequencing data combined with molecular and bioinformatics approaches to distinguish 5-methylcytosine from 5-hydroxymethylcytosine. By doing this, we have performed the first whole genome analyses of DNA modifications at non-CG sites in honey bees and correlated the effects of these DNA modifications on gene expression and alternative mRNA splicing.
Results
We confirmed, using unbiased analyses of whole-genome shotgun bisulfite sequencing (BS-seq) data, with both new data and published data, the previous finding that CG DNA methylation is enriched in exons in honey bees. However, we also found evidence that cytosine methylation and hydroxymethylation at non-CG sites is enriched in introns. Using antibodies against 5-hydroxmethylcytosine, we confirmed that DNA hydroxymethylation at non-CG sites is enriched in introns. Additionally, using a new technique, Pvu-seq (which employs the enzyme PvuRts1l to digest DNA at 5-hydroxymethylcytosine sites followed by next-generation DNA sequencing), we further confirmed that hydroxymethylation is enriched in introns at non-CG sites.
Conclusions
Cytosine hydroxymethylation at non-CG sites might have more functional significance than previously appreciated, and in honey bees these modifications might be related to the regulation of alternative mRNA splicing by defining the locations of the introns
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