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Articles 1 - 30 of 1190
Full-Text Articles in Medicine and Health Sciences
Development Of Dose Conversion Coefficients For Radionuclides Produced In Spallation Neutron Sources: Quarterly Progress Report 9/1/04 – 12/31/04, Phillip W. Patton, Mark Rudin
Development Of Dose Conversion Coefficients For Radionuclides Produced In Spallation Neutron Sources: Quarterly Progress Report 9/1/04 – 12/31/04, Phillip W. Patton, Mark Rudin
Transmutation Sciences Physics (TRP)
The research consortium comprised of representatives from several universities and national laboratories has successfully generated internal and external dose conversion coefficients for twenty radionuclides produced in spallation neutron sources. In addition, the group has identified twenty radionuclide that are missing electron capture files and eighteen additional radionuclides missing substantial physical data.
Cetacean Brain Evolution: Multiplication Generates Complexity, Lori Marino
Cetacean Brain Evolution: Multiplication Generates Complexity, Lori Marino
Anatomy Collection
Over the past 55-60 million years cetacean (dolphin, whale, and porpoise) brains have become hyperexpanded so that modern cetacean encephalization levels are second only to modern humans. At the same time, brain expansion proceeded along very different lines than in other large-brained mammals so that substantial differences between modern cetacean brains and other mammalian brains exist at every level of brain organization. Perhaps the most profound difference between cetacean and other mammalian brains is in the architecture of the neocortex. Cetaceans possess a unique underlying neocortical organizational scheme that is particularly intriguing in light of the fact that cetaceans exhibit …
Isolating Adult Psychological Correlates Of Witnessing Parental Violence: Findings From A Predominantly Latina Sample, Corrie A. Davies, David Dilillo, Isaac G. Martinez
Isolating Adult Psychological Correlates Of Witnessing Parental Violence: Findings From A Predominantly Latina Sample, Corrie A. Davies, David Dilillo, Isaac G. Martinez
Department of Psychology: Faculty Publications
This study examined the relationship between childhood exposure to parental violence and adult psychological functioning in a sample of predominantly Mexican American participants. Questionnaires assessing childhood maltreatment, family environment, and current psychological symptomatology were completed by 142 female undergraduates. Findings revealed that witnessing parental violence in childhood was associated with depressive symptoms, low self-esteem, and trauma symptoms in adulthood, even after controlling for child physical and sexual abuse. However, in subsequent analyses, also controlling for levels of nonphysical family conflict, previous associations between exposure to parental violence and adult symptomatology were reduced, such that trauma-related symptoms remained the sole outcome …
Parental Beliefs Regarding Developmental Benefits Of Childhood Injuries, Terri Lewis, David Dilillo, Lizette Peterson
Parental Beliefs Regarding Developmental Benefits Of Childhood Injuries, Terri Lewis, David Dilillo, Lizette Peterson
Department of Psychology: Faculty Publications
Objective: To assess parental beliefs that minor childhood injuries play a beneficial role in the development of young children.
Methods: Mothers and fathers of 159 children, ages 15 to 40 months, completed the Injury Attitudes Questionnaire (IAQ), designed to assess parental beliefs that children "learn from" and "toughen up" as a result of experiencing minor injuries.
Results: A main effect for parent gender was found such that fathers endorsed stronger beliefs than did mothers regarding the developmental benefits of injuries.
Conclusions: The accuracy of these beliefs as well as their relevance to parental injury-prevention behaviors is discussed.
Understanding Perpetrators Of Nonphysical Sexual Coercion: Characteristics Of Those Who Cross The Line, Sarah Degue, David Dilillo
Understanding Perpetrators Of Nonphysical Sexual Coercion: Characteristics Of Those Who Cross The Line, Sarah Degue, David Dilillo
Department of Psychology: Faculty Publications
Sexual coercion is defined here as a form of male sexual misconduct in which nonphysical tactics (e.g., verbal pressure) are utilized to gain sexual contact with an unwilling female partner. This study compares the risk characteristics of sexually coercive (n = 81) and nonoffending college males (n = 223) across several domains. Results revealed that sexual coercers differed from nonoffenders in that they more often subscribed to rape myths, viewed interpersonal violence as more acceptable, reported greater hostility toward females, and perceived male-female relationships as more inherently adversarial. In addition, compared to nonoffenders, sexually coercive males showed stronger indicators of …
Retinol Improves Bovine Embryonic Development In Vitro, Tracy Livingston, Dawn Eberhardt, J. Lannett Edwards, James Godkin
Retinol Improves Bovine Embryonic Development In Vitro, Tracy Livingston, Dawn Eberhardt, J. Lannett Edwards, James Godkin
Faculty Publications and Other Works -- Large Animal Clinical Sciences
Abstract
Retinoids are recognized as important regulators of vertebrate development, cell differentiation, and tissue function. Previous studies, performed both in vivo and in vitro, indicate that retinoids influence several reproductive events, including follicular development, oocyte maturation and early embryonic development. The present study evaluated in vitro effects of retinol addition to media containing maturing bovine oocytes and developing embryos in both a low oxygen atmosphere (7%) and under atmospheric oxygen conditions (20%). In the first experiment, abbatoir collected bovine oocytes were matured in the presence or absence of varying concentrations of retinol. After a 22–24 hour maturation period the oocytes …
A Meta-Analytic Review Of The Effects Of High Stress On Eyewitness Memory, Kenneth A. Deffenbacher, Brian H. Bornstein, Steven D. Penrod, E. Kiernan Mcgorty
A Meta-Analytic Review Of The Effects Of High Stress On Eyewitness Memory, Kenneth A. Deffenbacher, Brian H. Bornstein, Steven D. Penrod, E. Kiernan Mcgorty
Department of Psychology: Faculty Publications
In the past 30 years researchers have examined the impact of heightened stress on the fidelity of eyewitness memory. Meta-analyses were conducted on 27 independent tests of the effects of heightened stress on eyewitness identification of the perpetrator or target person and separately on 36 tests of eyewitness recall of details associated with the crime. There was considerable support for the hypothesis that high levels of stress negatively impact both types of eyewitness memory. Meta-analytic Z-scores, whether unweighted or weighted by sample size, ranged from -5.40 to -6.44 (high stress condition–low stress condition). The overall effect sizes were -.31 for …
Acetylcholine: Ii. Nicotinic Receptors, Joyce Besheer, Rick A. Bevins
Acetylcholine: Ii. Nicotinic Receptors, Joyce Besheer, Rick A. Bevins
Department of Psychology: Faculty Publications
The nicotinic cholinergic system has been widely implicated in mediating learning and/or memory processes in human and nonhuman animals. This chapter highlights various areas of basic research in which stimulation or blockade of nicotinic acetylcholine receptors (nAChRs) has been shown to affect an animals performance in a variety of tasks thought to measure learning and memory. For example, under certain conditions, stimulation of nAChRs by nicotine (or other nAChRs agonists) can enhance working memory of primates as measured in a delayed matching-to-sample task. Attentional processes are also improved in rats as indexed by a five-choice serial reaction time task. Further, …
Interdependent Assembly Of Specific Regulatory Lipids And Membrane Fusion Proteins Into The Vertex Ring Domain Of Docked Vacuoles, Rutilio A. Fratti, Youngsoo Jun, Alexey J. Merz, Nathan Margolis, William Wickner
Interdependent Assembly Of Specific Regulatory Lipids And Membrane Fusion Proteins Into The Vertex Ring Domain Of Docked Vacuoles, Rutilio A. Fratti, Youngsoo Jun, Alexey J. Merz, Nathan Margolis, William Wickner
Dartmouth Scholarship
Membrane microdomains are assembled by lipid partitioning (e.g., rafts) or by protein-protein interactions (e.g., coated vesicles). During docking, yeast vacuoles assemble "vertex" ring-shaped microdomains around the periphery of their apposed membranes. Vertices are selectively enriched in the Rab GTPase Ypt7p, the homotypic fusion and vacuole protein sorting complex (HOPS)-VpsC Rab effector complex, SNAREs, and actin. Membrane fusion initiates at vertex microdomains. We now find that the "regulatory lipids" ergosterol, diacylglycerol and 3- and 4-phosphoinositides accumulate at vertices in a mutually interdependent manner. Regulatory lipids are also required for the vertex enrichment of SNAREs, Ypt7p, and HOPS. Conversely, SNAREs and actin …
Dietary Carbohydrates And Breast Cancer Risk: A Prospective Study Of The Roles Of Overall Glycemic Index And Glycemic Load, Stephanie A. Navarro Silvera, Meera Jain, Geoffrey R. Howe, Anthony B. Miller, Thomas E. Rohan
Dietary Carbohydrates And Breast Cancer Risk: A Prospective Study Of The Roles Of Overall Glycemic Index And Glycemic Load, Stephanie A. Navarro Silvera, Meera Jain, Geoffrey R. Howe, Anthony B. Miller, Thomas E. Rohan
Department of Public Health Scholarship and Creative Works
We examined breast cancer risk in association with overall glycemic index (GI), glycemic load (GL), and dietary carbohydrate and sugar intake in a prospective cohort of 49,613 Canadian women enrolled in the National Breast Screening Study who completed a self‐administered food frequency questionnaire between 1980 and 1985. Linkages to national mortality and cancer databases yielded data on deaths and cancer incidence, with follow‐up ending between 1998 and 2000. During a mean follow‐up of 16.6 years, we observed 1,461 incident breast cancer cases. GI, GL, total carbohydrate and total sugar intake were not associated with breast cancer risk in the total …
Dietary Carbohydrates And Breast Cancer Risk: A Prospective Study Of The Roles Of Overall Glycemic Index And Glycemic Load, Stephanie A. Navarro Silvera, Meera Jain, Geoffrey R. Howe, Anthony B. Miller, Thomas E. Rohan
Dietary Carbohydrates And Breast Cancer Risk: A Prospective Study Of The Roles Of Overall Glycemic Index And Glycemic Load, Stephanie A. Navarro Silvera, Meera Jain, Geoffrey R. Howe, Anthony B. Miller, Thomas E. Rohan
Department of Public Health Scholarship and Creative Works
We examined breast cancer risk in association with an overall glycemic index (GI), glycemic load (GL), and dietary carbohydrate and sugar intake in a prospective cohort of 49,613 Canadian women enrolled in the National Breast Screening Study who completed a self-administered food frequency questionnaire between 1980 and 1985. Linkages to national mortality and cancer databases yielded data on deaths and cancer incidence, with follow-up ending between 1998 and 2000. During a mean follow-up of 16.6 years, we observed 1,461 incident breast cancer cases. GI, GL, total carbohydrate, and total sugar intake were not associated with breast cancer risk in the …
Expression Of Inwardly Rectifying Potassium Channels (Girks) And Beta-Adrenergic Regulation Of Breast Cancer Cell Lines, Howard K. Plummer, Qiang Yu, Yavuz Cakir, Hildegard M. Schuller
Expression Of Inwardly Rectifying Potassium Channels (Girks) And Beta-Adrenergic Regulation Of Breast Cancer Cell Lines, Howard K. Plummer, Qiang Yu, Yavuz Cakir, Hildegard M. Schuller
Faculty Publications and Other Works -- General Biology
Background
Previous research has indicated that at various organ sites there is a subset of adenocarcinomas that is regulated by beta-adrenergic and arachidonic acid-mediated signal transduction pathways. We wished to determine if this regulation exists in breast adenocarcinomas. Expression of mRNA that encodes a G-protein coupled inwardly rectifying potassium channel (GIRK1) has been shown in tissue samples from approximately 40% of primary human breast cancers. Previously, GIRK channels have been associated with beta-adrenergic signaling.
Methods
Breast cancer cell lines were screened for GIRK channels by RT-PCR. Cell cultures of breast cancer cells were treated with beta-adrenergic agonists and antagonists, and …
Estimating Percentile-Specific Causal Effects: A Case Study Of Micronutrient Supplementation, Birth Weight, And Infant Mortality, Francesca Dominici, Scott L. Zeger, Giovanni Parmigiani, Joanne Katz, Parul Christian
Estimating Percentile-Specific Causal Effects: A Case Study Of Micronutrient Supplementation, Birth Weight, And Infant Mortality, Francesca Dominici, Scott L. Zeger, Giovanni Parmigiani, Joanne Katz, Parul Christian
Johns Hopkins University, Dept. of Biostatistics Working Papers
In developing countries, higher infant mortality is partially caused by poor maternal and fetal nutrition. Clinical trials of micronutrient supplementation are aimed at reducing the risk of infant mortality by increasing birth weight. Because infant mortality is greatest among the low birth weight infants (LBW) (• 2500 grams), an effective intervention may need to increase the birth weight among the smallest babies. Although it has been demonstrated that supplementation increases the birth weight in a trial conducted in Nepal, there is inconclusive evidence that the supplementation improves their survival. It has been hypothesized that a potential benefit of the treatment …
A Hybrid Newton-Type Method For The Linear Regression In Case-Cohort Studies, Menggang Yu, Bin Nan
A Hybrid Newton-Type Method For The Linear Regression In Case-Cohort Studies, Menggang Yu, Bin Nan
The University of Michigan Department of Biostatistics Working Paper Series
Case-cohort designs are increasingly commonly used in large epidemiological cohort studies. Nan, Yu, and Kalbeisch (2004) provided the asymptotic results for censored linear regression models in case-cohort studies. In this article, we consider computational aspects of their proposed rank based estimating methods. We show that the rank based discontinuous estimating functions for case-cohort studies are monotone, a property established for cohort data in the literature, when generalized Gehan type of weights are used. Though the estimating problem can be formulated to a linear programming problem as that for cohort data, due to its easily uncontrollable large scale even for a …
Animal Health Matters, David H. Zeman
Animal Health Matters, David H. Zeman
Animal Health MATTERS Newsletter
Head/Director's Message [Page] 1- ADRDL invited to join the NAHLN Diagnostic News [Page] 1- Bovine genital trichomoniasis in western SD [Page] 2- Testing milk for mastitis at ADRDL [Page] 2- Poultry biosecurity [Page] 2- Veterinary poultry specialists sought Research News [Page] 2- VSD/ADRDL professor receives grant to establish research center Extension News [Page] 3- Are white tail deer a threat for spreading BVDV in cattle? [Page] 3- Liver copper concentration in calves [Page] 4- Calendar of events [Page] 4- Holiday hours
Public Health Nursing Acceptance Of The 5 A’S Protocol For Prenatal Smoking Cessation, Jihong Liu
Public Health Nursing Acceptance Of The 5 A’S Protocol For Prenatal Smoking Cessation, Jihong Liu
Faculty Publications
Oregon’s efforts in tobacco cessation have historically focused on the general population and have depended on quit line services as the primary intervention. The Oregon Smoke Free Mothers and Babies Program (SFMB) was developed in 2002 to focus on public health nurses and prenatal care providers who work with high risk pregnant women. It seeks to increase smoking cessation among low income and other high risk pregnant women by disseminating the U.S. Public Health Service best practices, the 5 A’s (Ask, Advise, Assess, Assist, Arrange) tobacco brief intervention protocol, to public health nurses and prenatal care providers. Interventions included teaching …
Ranking Usrds Provider-Specific Smrs From 1998-2001, Rongheng Lin, Thomas A. Louis, Susan M. Paddock, Greg Ridgeway
Ranking Usrds Provider-Specific Smrs From 1998-2001, Rongheng Lin, Thomas A. Louis, Susan M. Paddock, Greg Ridgeway
Johns Hopkins University, Dept. of Biostatistics Working Papers
Provider profiling (ranking, "league tables") is prevalent in health services research. Similarly, comparing educational institutions and identifying differentially expressed genes depend on ranking. Effective ranking procedures must be structured by a hierarchical (Bayesian) model and guided by a ranking-specific loss function, however even optimal methods can perform poorly and estimates must be accompanied by uncertainty assessments. We use the 1998-2001 Standardized Mortality Ratio (SMR) data from United States Renal Data System (USRDS) as a platform to identify issues and approaches. Our analyses extend Liu et al. (2004) by combining evidence over multiple years via an AR(1) model; by considering estimates …
The Kidney-Specific Wnk1 Isoform Is Induced By Aldosterone And Stimulates Epithelial Sodium Channel-Mediated Na+ Transport, Anikó Naray-Fejes-Toth, Peter M. Snyder, Géza Fejes-Toth
The Kidney-Specific Wnk1 Isoform Is Induced By Aldosterone And Stimulates Epithelial Sodium Channel-Mediated Na+ Transport, Anikó Naray-Fejes-Toth, Peter M. Snyder, Géza Fejes-Toth
Dartmouth Scholarship
WNK1 belongs to a unique family of Ser/Thr kinases that have been implicated in the control of blood pressure. Intronic deletions in the WNK1 gene result in its overexpression and lead to pseudohypoaldosteronism type II, a disease with salt-sensitive hypertension and hyperkalemia. How overexpression of WNK1 leads to Na+ retention and hypertension is not entirely clear. Similarly, there is no information on the hormonal regulation of expression of WNK kinases. There are two main WNK1 transcripts expressed in the kidney: the originally described “long” WNK1 and a shorter transcript that is specifically expressed in the kidney (KS-WNK1). The goal …
The Impact Of Different Types Of Expert Scientific Testimony On Mock Jurors’ Liability Verdicts, Brian H. Bornstein
The Impact Of Different Types Of Expert Scientific Testimony On Mock Jurors’ Liability Verdicts, Brian H. Bornstein
Department of Psychology: Faculty Publications
Participants in two experiments acted as jurors for a personal-injury case containing different types of expert testimony. In both experiments, the defendant was more likely to obtain a verdict in his favor when his expert presented anecdotal case histories than when the expert presented experimental data. Participants’ liability judgments were correlated with their perceptions of the experts’ credibility (experiments 1 and 2) and were moderated somewhat by their need for cognition and preference for numerical information (experiment 2). The results are discussed in terms of reasoning heuristics such as the base-rate fallacy.
Referent Selection Strategies In Case-Crossover Analyses Of Air Pollution Exposure Data: Implications For Bias, Holly Janes, Lianne Sheppard, Thomas Lumley
Referent Selection Strategies In Case-Crossover Analyses Of Air Pollution Exposure Data: Implications For Bias, Holly Janes, Lianne Sheppard, Thomas Lumley
UW Biostatistics Working Paper Series
The case-crossover design has been widely used to study the association between short term air pollution exposure and the risk of an acute adverse health event. The design uses cases only, and, for each individual, compares exposure just prior to the event with exposure at other control, or “referent” times. By making within-subject comparisons, time invariant confounders are controlled by design. Even more important in the air pollution setting is that, by matching referents to the index time, time varying confounders can also be controlled by design. Yet, the referent selection strategy is important for reasons other than control of …
Ada News - 12/13/2004, American Dental Association, Publishing Division
Ada News - 12/13/2004, American Dental Association, Publishing Division
ADA News
Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.
Quality Improvement In Maryland: Partnerships And Progress, Judith D. Moore, Lisa Sprague
Quality Improvement In Maryland: Partnerships And Progress, Judith D. Moore, Lisa Sprague
National Health Policy Forum
This one-and-a-half-day site visit to Easton, Maryland, explored the activities of the Delmarva Foundation, the Quality Improvement Organization (QIO) for Maryland and the District of Columbia. The program reviewed Delmarva’s responsibilities under their Medicare contract and the initiatives they have undertaken with hospitals and other providers to improve health care outcomes and to define, collect, and report quality data. Local hospital officials added their perspective on quality programs and working with Delmarva. Topics of particular interest were health information technology, patient safety, and quality reporting both to government agencies and to consumers.
Semi-Parametric Single-Index Two-Part Regression Models, Xiao-Hua Zhou, Hua Liang
Semi-Parametric Single-Index Two-Part Regression Models, Xiao-Hua Zhou, Hua Liang
UW Biostatistics Working Paper Series
In this paper, we proposed a semi-parametric single-index two-part regression model to weaken assumptions in parametric regression methods that were frequently used in the analysis of skewed data with additional zero values. The estimation procedure for the parameters of interest in the model was easily implemented. The proposed estimators were shown to be consistent and asymptotically normal. Through a simulation study, we showed that the proposed estimators have reasonable finite-sample performance. We illustrated the application of the proposed method in one real study on the analysis of health care costs.
Chloride Equilibrium Potential In Salamander Cones., Wallace B. Thoreson, Eric J. Bryson
Chloride Equilibrium Potential In Salamander Cones., Wallace B. Thoreson, Eric J. Bryson
Journal Articles: Ophthalmology
BACKGROUND: GABAergic inhibition and effects of intracellular chloride ions on calcium channel activity have been proposed to regulate neurotransmission from photoreceptors. To assess the impact of these and other chloride-dependent mechanisms on release from cones, the chloride equilibrium potential (ECl) was determined in red-sensitive, large single cones from the tiger salamander retinal slice.
RESULTS: Whole cell recordings were done using gramicidin perforated patch techniques to maintain endogenous Cl- levels. Membrane potentials were corrected for liquid junction potentials. Cone resting potentials were found to average -46 mV. To measure ECl, we applied long depolarizing steps to activate the calcium-activated chloride current …
Comparison Of Fda-Approved Antiepileptic Drugs, Joseph A. Woelfel
Comparison Of Fda-Approved Antiepileptic Drugs, Joseph A. Woelfel
School of Pharmacy Faculty Articles
No abstract provided.
Community-Acquired Pneumonia Risk With Acid-Suppressive Drugs, Joseph A. Woelfel
Community-Acquired Pneumonia Risk With Acid-Suppressive Drugs, Joseph A. Woelfel
School of Pharmacy Faculty Articles
No abstract provided.
Joint Commission Required Medication Profile Reconciliation, Joseph A. Woelfel
Joint Commission Required Medication Profile Reconciliation, Joseph A. Woelfel
School of Pharmacy Faculty Articles
No abstract provided.
Correct Use Of Metered Dose Inhalers (Mdis), Joseph A. Woelfel
Correct Use Of Metered Dose Inhalers (Mdis), Joseph A. Woelfel
School of Pharmacy Faculty Articles
No abstract provided.
Spruce Run News (December 2004), Spruce Run Staff
Spruce Run News (December 2004), Spruce Run Staff
Maine Women's Publications - All
No abstract provided.
Human Security For All, Kevin M. Cahill, M.D.
Human Security For All, Kevin M. Cahill, M.D.
Institute of International Humanitarian Affairs
The tragic death in Baghdad in 2003 of Sergio Vieira de Mello, the United Nations High Commissioner for Human Rights, brought into bitter relief the challenges faced by peacekeepers and humanitarian aid workers.
The contributors to this book, all leading scholars and practitioners, offer invaluable perspectives on many of the most important political, legal, social, and military challenges confronting humanitarian aid in a world of terror and conflict. These original essays explore such topics as human rights and the rights of the displaced, working with local communities to rebuild viable governance, justice, and the rule of law, and maintaining safe …