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PubMed Journals Articles About "Infertility Crisis Beyond Doubt Scientists Must Find Cause" RSS

09:10 EDT 25th September 2017 | BioPortfolio

Infertility Crisis Beyond Doubt Scientists Must Find Cause PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Infertility Crisis Beyond Doubt Scientists Must Find Cause articles that have been published worldwide.

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Showing "infertility crisis beyond doubt scientists must find cause" PubMed Articles 1–25 of 4,200+

Police officers' volunteering for (rather than being assigned to) Crisis Intervention Team (CIT) training: Evidence for a beneficial self-selection effect.

Officers' volunteering for Crisis Intervention Team (CIT) training-rather than being assigned-is assumed to be an important, beneficial self-selection bias. This bias remains poorly characterized, though CIT officers are more likely to be female and to have had exposure to the mental health field. We determined whether or not self-selection is beneficial with regard to knowledge, attitudes, and skills, as well as level of force used (i.e., no or low force versus any form of physical force) and disposition o...


Hydrogen chemisorption on singly vanadium doped aluminum clusters.

The effect of vanadium doping on the hydrogen adsorption capacity of aluminum clusters (Al_n^+, n = 2-18) is studied experimentally by mass spectrometry and infrared multiple photon dissociation (IRMPD) spectroscopy. We find that vanadium doping enhances the reactivity of the clusters towards hydrogen, albeit in a size-dependent way. IRMPD spectra, which provide a fingerprint of the hydrogen binding geometry, show that H_2 dissociates upon adsorption. Density functional theory (DFT) calculations for the sma...

Genetic interaction with temperature is an important determinant of nematode longevity.

As in other poikilotherms, longevity in C. elegans varies inversely with temperature; worms are longer-lived at lower temperatures. While this observation may seem intuitive based on thermodynamics, the molecular and genetic basis for this phenomenon is not well understood. Several recent reports have argued that lifespan changes across temperatures are genetically controlled by temperature-specific gene regulation. Here, we provide data that both corroborate those studies and suggest that temperature-spec...


The built environment and older adults: A literature review and an applied approach to engaging older adults in built environment improvements for health.

This paper presents a review of the literature about the built environment as it impacts the health of older people. It then introduces the gerontological nurse and researcher to the Our Voice framework for engaging older people as citizen scientists in order to empower them as agents of change in improving their local built environment and ultimately advancing community health.

Flexible Broadband Graphene Photodetectors Enhanced by Plasmonic Cu3-x P Colloidal Nanocrystals.

The integration of graphene with colloidal quantum dots (QDs) that have tunable light absorption affords new opportunities for optoelectronic applications as such a hybrid system solves the problem of both quantity and mobility of photocarriers. In this work, a hybrid system comprising of monolayer graphene and self-doped colloidal copper phosphide (Cu3-x P) QDs is developed for efficient broadband photodetection. Unlike conventional PbS QDs that are toxic, Cu3-x P QDs are environmental friendly and have pl...

Energetic 1,2,5-oxadiazolo-pyridazine and its N-oxide.

Achieving an energetic compound which exhibits high performance and insensitivity is important in the field of energetic materials and remains a major challenge. Here we find that oxidation of 4,7-diaminopyridazino[4,5-c]furoxan (5) with hypofluorous acid (HOF) or a mixture of 50% hydrogen peroxide and trifluoroacetic anhydride gives rise to 6-amino-7-nitro-[1,2,5]oxadiazolo[3,4-c]pyridazine (7) and its N-oxide derivative (8). Compound 8 displays an energetic performance compared to TATB and insensitive pro...

The Affordable Care Act's insurance market regulations' effect on coverage.

Much of the debate surrounding reform of the Patient Protection and Affordable Care Act (ACA) revolves around its insurance market regulation. This paper studies the impact on health insurance coverage of those provisions. Using data from the American Community Survey, years 2008-2015, I focus on individuals, ages 26 to 64, who are ineligible for the subsidies or Medicaid expansions included in the ACA to isolate the effect of its market regulation. To account for time trends, I utilize a differences-in-dif...

Not feeling well … true or exaggerated? Self-assessed health as a leading health indicator.

We provide original, international evidence documenting that self-assessed health (SAH) is a leading health indicator, that is, a significant predictor of future changes in health conditions, in a large sample of Europeans aged above 50 and living in 13 different countries. We find that, after controlling for attrition bias, lagged SAH is significantly and negatively correlated with changes in the number of chronic diseases, net of the correlations with levels, and changes in sociodemographic factors and he...

Spatial effects in hospital expenditures: A district level analysis.

We use spatial econometric methods to analyse spillovers in hospital expenditures across Health Districts of the Emilia-Romagna Region (Italy). We estimate spatial models that allow for global spillovers and distinguish between the expenditures associated with potentially inappropriate hospitalizations and those associated with complex medical procedures. We also investigate the relative contribution of geographical and institutional proximity in explaining spatial dependence, by explicitly modelling differ...

Do hospitals respond to rivals' quality and efficiency? A spatial panel econometric analysis.

We investigate whether hospitals in the English National Health Service change their quality or efficiency in response to changes in quality or efficiency of neighbouring hospitals. We first provide a theoretical model that predicts that a hospital will not respond to changes in the efficiency of its rivals but may change its quality or efficiency in response to changes in the quality of rivals, though the direction of the response is ambiguous. We use data on eight quality measures (including mortality, em...

Will you still need me, will you still feed me when I'm 64? The health impact of caregiving to one's spouse.

Informal care may substitute for formal long-term care that is often publicly funded or subsidized. The costs of informal caregiving are borne by the caregiver and may consist of worse health outcomes and, if the caregiver has not retired, worse labor market outcomes. We estimate the impact of providing informal care to one's partner on the caregiver's health using data from the Survey of Health, Ageing, and Retirement in Europe. We use statistical matching to deal with selection bias and endogeneity. We fi...

Determinants of transient and persistent hospital efficiency: The case of Italy.

In this paper, we extend the 4-random-component closed skew-normal stochastic frontier model by including exogenous determinants of hospital persistent (long-run) and transient (short-run) inefficiency, separated from unobserved heterogeneity. We apply this new model to a dataset composed by 133 Italian hospitals during the period 2008-2013. We show that average total inefficiency is about 23%, higher than previous estimates; hence, a model where the different types of inefficiency and hospital unobserved c...

Drug therapy adherence and health outcomes in the presence of physician and patient unobserved heterogeneity.

Understanding the role that drug adherence has on health outcomes in everyday clinical practice is central for the policy maker. This is particularly true when patients suffer from asymptomatic chronic conditions (e.g., hypertension, hypercholesterolaemia, and diabetes). By exploiting a unique longitudinal dataset at patient and physician level in Italy, we show that patients and physicians unobserved characteristics play an important role in determining health status, at least as important as drug adherenc...

Do public hospitals respond to changes in DRG price regulation? The case of birth deliveries in the Italian NHS.

We study how changes in Diagnosis-Related Group price regulation affect hospital behaviour in quasi-markets with exclusive provision by public hospitals. Exploiting a quasi-natural experiment, we use a difference-in-differences approach to test whether public hospitals respond to an exogenous change in Diagnosis-Related Group tariffs by increasing C-section rates and/or by upcoding. Controlling for a detailed set of mother characteristics, we find that price changes did not affect the probability of a C-sec...

The effect of waiting times on demand and supply for elective surgery: Evidence from Italy.

Waiting times are a major policy concern in publicly funded health systems across OECD countries. Economists have argued that, in the presence of excess demand, waiting times act as nonmonetary prices to bring demand for and supply of health care in equilibrium. Using administrative data disaggregated by region and surgical procedure over 2010-2014 in Italy, we estimate demand and supply elasticities with respect to waiting times. We employ linear regression models with first differences and instrumental va...

The eldercare landscape: Evidence from California.

Although the literature suggests that nursing home location is instrumental to the efficient functioning of the long-term care industry, there has been little research directly focused on the spatial distribution of nursing homes. We discuss factors that may influence nursing home location choice, emphasizing agglomeration economies around hospitals. We estimate econometric models of location using information on all freestanding, MediCal-licensed long-term care facilities in the state of California. We fin...

Transcription instability in high-risk neuroblastoma is associated with a global perturbation of chromatin domains.

Chromosome instability has a pivotal role among the hallmarks of cancer, but its transcriptional counterpart is rarely considered a relevant factor in cell destabilization. To examine transcription instability (TIN) we first devised a metric we named TIN-index and used it to evaluate TIN on a dataset containing more than 500 neuroblastoma samples. We found that metastatic tumors from high-risk (HR) patients are characterized by significantly different TIN-index values compared to low-intermediate risk (LIR)...

Comparing three-year extension of early intervention service to regular care following two years of early intervention service in first-episode psychosis: a randomized single blind clinical trial.

This study aimed to determine if, following two years of early intervention service for first-episode psychosis, three-year extension of that service was superior to three years of regular care. We conducted a randomized single blind clinical trial using an urn randomization balanced for gender and substance abuse. Participants were recruited from early intervention service clinics in Montreal. Patients (N=220), 18-35 years old, were randomized to an extension of early intervention service (EEIS; N=110) or ...

Promoting Sketching in Introductory Geoscience Courses: CogSketch Geoscience Worksheets.

Research from cognitive science and geoscience education has shown that sketching can improve spatial thinking skills and facilitate solving spatially complex problems. Yet sketching is rarely implemented in introductory geosciences courses, due to time needed to grade sketches and lack of materials that incorporate cognitive science research. Here, we report a design-centered, collaborative effort, between geoscientists, cognitive scientists, and artificial intelligence (AI) researchers, to characterize sp...

Three novel mutations in CYBA among 22 Iranians with Chronic granulomatous disease.

Chronic granulomatous disease (CGD) is a rare primary immunodeficiency caused by defect in one of the components of nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase enzyme. The enzyme is at least composed of membrane-bound subunits gp91-phox and p22-phox (also named cytochrome b558 ), and cytosolic ones p40-phox, p47-phox and p67-phox. A defect in the enzyme activity leads to impaired intracellular killing of phagocytic cells. The CYBA gene encoding p22-phox is located on chromosome 16q24. In thi...

Venous Thromboembolism: An Unrecognized Crisis in Gynecologic Oncology.

Licochalcone A Prevents the Loss of Dopaminergic Neurons by Inhibiting Microglial Activation in Lipopolysaccharide (LPS)-Induced Parkinson's Disease Models.

The neuroprotective effects of Licochalcone A (Lico.A), a flavonoid isolated from the herb licorice, in Parkinson's disease (PD) have not been elucidated. The prominent pathological feature of PD is the loss of dopaminergic neurons. The crucial role of neuroinflammation induced by activated microglia in dopaminergic neurodegeneration has been validated. In this study, we explore the therapeutic effects of Lico.A in lipopolysaccharide (LPS)-induced PD models in vivo and in vitro. We find that Lico.A signific...

Influence of Carbon Nanotube Characteristics on Macroscopic Fiber Properties.

We study how intrinsic parameters of CNT samples affect the properties of macroscopic CNT fibers with optimized structure. We measure CNT diameter, number of walls, aspect ratio, graphitic character, and purity (residual catalyst and non-CNT carbon) in samples from 19 suppliers; we process the highest quality CNT samples into aligned, densely packed fibers, by using an established wet-spinning solution process. We find that fiber properties are mainly controlled by CNT aspect ratio and that sample purity is...

Sex Allocation Patterns across Cooperatively Breeding Birds Do Not Support Predictions of the Repayment Hypothesis.

The repayment hypothesis predicts that reproductive females in cooperative breeding systems overproduce the helping sex. Thanks to well-documented examples of this predicted sex ratio bias, repayment has been considered an important driver of variation in sex allocation patterns. Here we test this hypothesis using data on population brood sex ratios and facultative sex allocation from 28 cooperatively breeding bird species. We find that biased sex ratios of helpers do not correlate with production biases in...

Eggshell Biliverdin and Protoporphyrin Pigments in a Songbird: Are They Derived from Erythrocytes, Blood Plasma, or the Shell Gland?

Biliverdin and protoporphyrin pigments are deposited into the eggshell when the developing egg is in the shell gland. However, the site of synthesis of eggshell pigments is still uncertain, although it may influence the possible costs and potential functions of eggshell coloration in avian species. Eggshell pigments may be derived from red blood cells or be produced in other organs and then transferred to the shell gland, or they may be synthesized de novo in the shell gland. We studied in the canary (Serin...


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