3,034 research outputs found

    Do Trustees and Administrators Matter? Diversifying the Faculty Across Gender Lines

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    Our paper focuses on the role that the gender composition of the leaders of American colleges and universities – trustees, presidents/chancellors, and provosts/academic vice presidents – plays in influencing the rate at which academic institutions diversify their faculty across gender lines. Our analyses make use of institutional level panel data that we have collected for a large sample of American academic institutions. We find, other factors held constant including our estimate of the “expected” share of new hires that should be female, that institutions with female presidents/chancellors and female provosts/academic vice presidents, as well as those with a greater share of female trustees, increase their shares of female faculty at a more rapid rate. The magnitudes of the effects of these leaders are larger at smaller institutions, where central administrators may play a larger role in faculty hiring decisions. A critical share of female trustees must be reached before the gender composition of the board matters

    Using NDF and ADF to balance diets (1993)

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    This publication shows how neutral detergent solution can be used to measure neutral detergent fiber (NDF). NDF represents the total plant fiber or cell wall including hemicellulose, cellulose and lignin. This publication also shows how acid detergent solution can be used to measure acid detergent fiber (ADF), which contains cellulose and lignin. Both ADF and NDF data help to more accurately estimate feed intake, energy values and animal performance

    Transport of N-acetylaspartate via murine sodium/dicarboxylate cotransporter NaDC3 and expression of this transporter and aspartoacylase II in ocular tissues in mouse

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    AbstractCanavan disease is a genetic disorder associated with optic neuropathy and the metabolism of N-acetylaspartate is defective in this disorder due to mutations in the gene coding for the enzyme aspartoacylase II. Here we show that the plasma membrane transporter NaDC3, a Na+-coupled transporter for dicarboxylates, is able to transport N-acetylaspartate, suggesting that the transporter may function in concert with aspartoacylase II in the metabolism of N-acetylaspartate. Since Canavan disease is associated with ocular complications, we investigated the expression pattern of NaDC3 and aspartoacylase II in ocular tissues in mouse by in situ hybridization. These studies show that NaDC3 mRNA is expressed in the optic nerve, most layers of the retina, retinal pigment epithelium, ciliary body, iris, and lens. Aspartoacylase II mRNA is coexpressed in most of these cell types. We conclude that transport of N-acetylaspartate into ocular tissues via NaDC3 and its subsequent hydrolysis by aspartoacylase II play an essential role in the maintenance of visual function

    Asperciones de permetrina microencapsulada para el control de la garrapata sureña del ganado, Boophilus microplus (Aeari:Ixodidae), infestando novillas lecheras Holstein en Santa Cruz, Islas Vírgenes Americanas

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    The effectiveness of two acaricides was evaluated for control of populations of the southern cattle tick, Boophilus microplus on dairy cattle in St. Croix, U.S. Virgin Islands. Two different concentrations of a microencapsulated (ME) formulation of permethrin (0.05% and 0.10% ai) and one concentration of coumaphos emulsifiable concentrate (EC) (0.117% ai) were sprayed on Holstein heifers that had a natural infestation of ticks. The length of residual activity of EC coumaphos and ME permethrin at 0.05% (ai) was at least four days, and for ME permethrin at 0.10% ai at least seven days.There was no apparent increase in the residual activity period of ME permethrin in comparison to that in field trials of other formulations of permethrin against B. microplus. Percentage control for the three treatment groups from days 4 through 21 was ME permethrin (0.05% ai) 96%; ME permethrin (0.10% ai), 97%; coumaphos, 98.3%. There were no significant differences among the treatment groups (F = 2.21, df = 2,17, P> 0.10). This research confirms the usefulness of permethrin as an alternative to coumaphos for control of B. microplus populations on cattle.Se evaluaron dos acaricidas por su efectividad para controlar las poblaciones de la garrapata sureña Boophilus microplus en ganado lechero en Santa Cruz, Islas Virgenes Americanas. Se asperjaron dos concentraciones diferentes de una formulación microencapsulada (ME) de permetrína (0.05 y 0.10% ia) y una concentración de coumaphos concentrado emulsificable (0,117% ia) sobre novillas Holstein que presentaban una infestación natural de garrapatas. La actividad residual del coumaphos y la permetrina ME (0.05% ia) fue por lo menos de cuatro días y la de permetrina ME (0.10% ia) fue de por lo menos siete días. El largo del periodo residual de la permetrina ME sobre el Boophilus microplus no aumentó en comparación con experimentos de campo con otras formulaciones de permetrinas. El porcentaje de control para los tres tratamientos desde los días 4 al 21 fue: permetrina ME (0.05% ia), 96%; permetrina ME (0,10% ia), 97%; coumaphos, 98.3%. Las diferencias entre las medias de los diferentes tratamientos no fueron significativas (F= 2.21; g.l. = 2,17, P> 0.10). Esta investigación confirma que la permetrina es una alternativa para el control de B. microplus en poblaciones de ganado

    Effect of Perflubron-induced lung growth on pulmonary vascular remodeling in congenital diaphragmatic hernia

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    Congenital diaphragmatic hernia (CDH) involves lung hypoplasia and pulmonary hypertension (PH). Post-natal Perflubron ventilation induces lung growth. This phenomenon is called Perflubon-induced lung growth (PILG). However, it does not appear to ameliorate PH in CDH. We aim to determine the effect of PILG on pulmonary vascular remodeling in neonates with CDH and PH requiring extracorporeal membrane oxygenation (ECMO)

    Thoracoscopic Repair of Congenital Diaphragmatic Hernia in Neonates: Lessons Learned

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    Abstract Purpose: We sought to characterize our recent experience with thoracoscopic congenital diaphragmatic hernia (CDH) repair and identify patient selection factors. Methods: We reviewed the medical records of full-term neonatal (<1 month of age) patients who underwent thoracoscopic CDH repair between 2004 and 2008 (n=15). We obtained data on prenatal diagnosis, characteristics of the CDH and repair, complications, and outcome. Results: All patients were stabilized preoperatively and underwent repair at an average of 5.7+/-1.3 days. Six patients were prenatally diagnosed, including the 5 inborn. Thirteen defects were left-sided. All were intubated shortly after birth and 2 required extracorporeal membrane oxygenation (ECMO). Twelve of 15 (80%) patients underwent successful thoracoscopic primary repair, including 1 of the patients who required ECMO prior to repair. Conversion to open repair occurred in 3 of 15 (20%) patients because of the need for patch closure or intraoperative instability. Among those converted to open, all had left-sided CDH defects and 3 had stomach herniation (of 5 such patients). Patients spent an average of 6.9+/-1.0 days on the ventilator following repair. The average time until full-enteral feeding was 16.7+/-2.25 days, and average length of hospital stay was 23.8+/-2.73 days. All patients survived to discharge, and average length of follow-up was 15.3+/-3.6 months. Conclusions: Thoracoscopic repair of CDH is a safe, effective strategy in patients who have undergone prior stabilization. Stomach herniation is associated with, but does not categorically predict, conversion to open repair. ECMO use prior to repair should not be an absolute contraindication to thoracoscopic repair.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78119/1/lap.2009.0129.pd

    Do Trustees and Administrators Matter? Diversifying the Faculty Across Gender Lines

    Get PDF
    Our paper focuses on the role that the gender composition of the leaders of American colleges and universities -trustees, presidents/chancellors, and provosts/academic vice presidents - plays in influencing the rate at which academic institutions diversify their faculty across gender lines. Our analyses make use of institutional level panel data that we have collected on for a large sample of American academic institutions. We find that, other factors held constant including our estimate of the "expected" share of new hires at an institution that should be female, that institutions with female presidents/chancellors and female provosts/academic vice presidents, and those with a greater share of female trustees, increase their shares of female faculty at a more rapid rate. The magnitudes of the effects of these leaders are larger at smaller institutions, where central administrators may play a larger role in faculty hiring decisions. A critical share of female trustees must be reached before the gender composition of the board matters.
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