نتایج جستجو برای: positivity
تعداد نتایج: 21000 فیلتر نتایج به سال:
We show how calculable IR loop effects impact positivity bounds in effective field theories with causal and unitary UV completions. identify infrared singularities that appear dispersion relations at $|t|\ensuremath{\lesssim}{m}^{2}$. In the massless limit, they weaken two-sided based on crossing symmetry, such as lower bound amplitude for Galileon scattering. For amplitudes are analytic $s$ ev...
OBJECTIVES Although elevated cardiac troponin T is caused by myocardial damage in the vast majority of the cases (primary cardiac causes), noncardiac disease with secondary damage to the myocardium (secondary cardiac causes) is being increasingly recognised. The present study aimed to retrospectively evaluate the frequency of primary cardiac and secondary cardiac causes of troponin-T positivity...
In this article, using a twisted version of Hörmander’s L 2 -estimate, we give new characterizations notions partial positivity, which are uniform q-positivity and RC-positivity. We also discuss the definition for singular Hermitian metrics.
BACKGROUND It is well known that anti-GAD (glutamic acid decarboxylase) serves as a marker for development of autoimmune diabetes in adults. On the other hand, the clinical implications of anti-GAD positivity in persistently non-diabetic (PND) adults are poorly elucidated. Our aim was to establish the frequency of anti-GAD in PNDs in an all-population-based cohort from the Nord-Trøndelag health...
Background and Objective: Male breast carcinoma (MBC) is an unusual form of neoplasia, representing 0.7 to 1 percent of all breast cancer cases. Usually, the carcinoma affects patients after the sixth decade. The aim of this study was to evaluate the status of estrogen and progesterone receptors (ER and PR) and prognostic factors (p53 and Her-2/neu) in a series of male patients with breast canc...
Background: Infection with human immune deficiency virus (HIV) or hepatitis B virus (HBV) is one of the health problems in blood transfusion science. This study was conducted in shiraz for determination of the rate of HIV positivity in blood donors during the years 1998-2002. Materials and Methods: This cross-sectional descriptive study was conducted on 615790 blood donors. All samples were scr...
Abstract Background and Objectives HBV, a classic viral Transfusion Transmitted Infection(TTI), is considered an important health and blood safety issue in every society. Prevalence of HBsAg positivity is variable among Iranian blood donors nationwide. This study was performed to determine the frequency of HBsAg positive blood donors and the probable associated risk factors in Mazandaran provi...
By using a reason-for-test code, we compared positivity for female chlamydia and gonorrhea. At family planning clinics, there were no statistically significant differences in screening versus diagnostic positivity for either chlamydia or gonorrhea among women. However, at adolescent health clinics, diagnostic positivity was higher than screening positivity for chlamydia and gonorrhea.
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