نتایج جستجو برای: q4
تعداد نتایج: 1229 فیلتر نتایج به سال:
BACKGROUND There are few economic indicators that take the neighbourhood as the unit of reference in our context. The aim of this article is to describe the process and results of secondary data collection and development of a deprivation index (DI) for the neighbourhoods of the cities of Madrid and Barcelona, discussing their utility for research on health inequalities. METHODS Initial DI co...
BACKGROUND Higher exposure to certain phthalates is associated with a diabetes and insulin resistance, with sex differences seen. Yet, little is known about the association between phthalates and metabolic syndrome (MetS), particularly with consideration for differences by sex and menopausal status. METHODS We analyzed data from 2719 participants in the National Health and Nutrition Examinati...
BACKGROUND In 2011 the U.S. Accreditation Council for Graduate Medical Education began limiting first year resident physicians (interns) to shifts of ≤16 consecutive hours. Controversy persists regarding the effectiveness of this policy for reducing errors and accidents while promoting education and patient care. Using a mathematical model of the effects of circadian rhythms and length of time ...
Obesity is a risk factor for colorectal cancer, and hyperinsulinemia, a common condition in obese patients, may underlie this relationship. Insulin, in addition to its metabolic effects, has promitotic and antiapoptotic activity that may be tumorigenic. Insulin-like growth factor (IGF)-I, a related hormone, shares sequence homology with insulin, and has even stronger mitogenic effects. However,...
BACKGROUND Several mechanisms are involved in the pathophysiology of the Acute Coronary Syndrome (ACS). We have addressed whether B-type natriuretic peptide (BNP) and high-sensitive C-reactive protein (hsCRP) in admission samples may improve risk stratification in chest pain patients with suspected ACS. METHODS We included 982 patients consecutively admitted with chest pain and suspected ACS ...
Isotopic enrichment of 29Si and DNP-enhanced NMR spectroscopy are combined to determine the detailed surface structure of a silicated alumina catalyst. The significant sensitivity enhancement provided by DNP is vital to the acquisition of multinuclear and multidimensional experiments that provide information on the atomic-level structure of the species present at the surface. Isotopic enrichmen...
OBJECTIVE In men, testosterone (T) levels decline with age, and lower T predicts all-cause and cardiovascular mortality. However, the associations of T and its metabolites, dihydrotestosterone (DHT) and estradiol (E2), with symptomatic peripheral arterial disease remain unclear. We assessed associations of T, DHT and E2 with lower limb intermittent claudication in older men. DESIGN Cross-sect...
To evaluate the case volume (CV) and mortality outcomes relationship after both open (OAR) endovascular repair (EVAR) of elective (e) ruptured (r) abdominal aortic aneurysm using contemporary administrative database. Healthcare Cost Utilization Project Database for NY (2016) NJ/MD/FL (2016-2017) were queried International Classification Disease-10th edition to identify OAR EVAR. Hospitals categ...
So far, the smallest complete bipartite graph which was known to have a cyclic decomposition into cubes Qd of a given dimension d was Kd2d−1,d2d−2 . We improve this result and show that also Kd2d−2,d2d−2 allows a cyclic decomposition into Qd. We also present a cyclic factorization of K8,8 into Q4.
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