Existence of large-data global weak solutions to a model of a strain-limiting viscoelastic body

We prove the existence of a unique large-data global-in-time weak solution to a class of models of the form utt=div T+f for viscoelastic bodies exhibiting strain-limiting behaviour, where the constitutive equation, relating the linearised strain tensor ε(u) to the Cauchy stress tensor T, is assumed to be of the form ε(ut)+αε(u)=F(T), where we define F(T)=(1+|T|a)−1aT, for constant parameters α∈(0,∞) and a∈(0,∞), in any number d of space dimensions, with periodic boundary conditions. The Cauchy stress T is shown to belong to L1(Q)d×d over the space-time domain Q. In particular, in three space dimensions, if a∈(0,27), then in fact T∈L1+δ(Q)d×d for a δ>0, the value of which depends only on a

Electromagnetic heavy-lepton pair production in relativistic heavy-ion collisions

We calculate the cross sections of electromagnetic productions of muon- and tauon-pair productions from the ultra-relativistic heavy ion collisions. Since the Compton wavelengths of muon and tauon are comparable to the radius of the colliding ions, nuclear form factors play important roles for calculating the cross sections. Recent measurement (Abrahamyan et al., Phys Rev Lett 108:112502, 2012) indicates that the neutrons are differently distributed from the protons; therefore this affects the cross section of the heavy-lepton pair production. In order to see the effects of the neutron distributions in the nucleus, we used analytical expression of the Fourier transforms of the Wood–Saxon distribution. Cross section calculations show that the Wood–Saxon distribution function is more sensitive to the parameter R compared to the parameter a

Investigation of asymptomatic visceral leishmaniasis cases using western blot in an endemic area in Turkey

In Turkey, Leishmania infantum is responsible for human visceral leishmaniasis (VL), which is seen mainly in the Aegean, Mediterranean, and Central Anatolia Regions. This study aimed to determine asymptomatic infections in an endemic area of VL in Turkey using the western blot technique. A total of 82 persons including children and adults were chosen randomly in Denizli province which is one of the endemic sites for VL. Serum samples were collected and screened using indirect immunofluorescent test (IFAT), enzyme-linked immunosorbent assay (ELISA) and western blot (WB). One year later, 35 of the 82 persons were sampled and screened serologically for the second time. Seven out of 82 samples were found to be positive by western blot analysis with the presence of 14 and/or 18 kDa bands. Two of these seven sera were also positive by IFAT, but only one of these two was positive by ELISA. Only one person showing seropositivity with all three tests had clinical symptoms and was diagnosed as VL with the presence of amastigotes in bone marrow aspirate. Because six people, including the one found to be seropositive in all two tests, had no clinical symptoms, they were accepted as asymptomatic carriers. The ratio of asymptomatic infection was calculated as 7.41% (6/81) in the region. In the second sampling, the western blot revealed antibodies against the same antigens in all seven subjects. Our findings showed that the presence of antibodies against 14 and 18 kDa antigens are important for the diagnosis of symptomatic and asymptomatic infections. Western blot was found to be effective in the detection of asymptomatic persons in the epidemiological studies in endemic areas

Factors affecting TST level in patients undergoing dialysis: a multicenter study

PMID = 3028919

Data on prevalence of obesity and waist circumference in Turkey: Systematic review, meta-analysis and meta-regression of epidemiological studies on cardiovascular risk factors [Türkiye'de obezite sikligi ve bel çevresi verileri: Kardiyovasküler risk faktörlerine yönelik epidemiyolojik çalişmalarin sistematik derleme, meta-analiz ve meta-regresyonu]

PubMed ID: 30391987Objective: Obesity is the most important epidemic of the 21st century and its incidence is increasing steadily in Turkey. The aim of this study was to assess the current status and temporal change in the prevalence of obesity in Turkey with a systematic review and meta-analysis of epidemiological studies conducted in the last 15 years. Methods: Ovid Medline, the Web of Science Core Collection and the Turkish Academic Network and Information Center (ULAKBIM) databases, as well as the web pages of the Turkish Ministry of Health, the Turkish Statistical Institute, and cardiology, nephrology and endocrinology associations were searched for epidemiological studies conducted within Turkey the last 15 years. Research focusing on local data was excluded. Studies included in the analysis were assessed with a special bias score and categorized as having low or high risk of bias. Body mass index (BMI), waist circumference, obesity and prevalence of abdominal obesity were calculated as crude values. Meta-regression analysis was performed to assess heterogeneity and change over time. Results: The agreement between the two investigators on the selection and bias scoring of the studies was excellent (kappa=0.95), but the heterogeneity between the studies was high. BMI (10 studies, n=93.554) was calculated as 28.2 kg/m2 for women and 26.5 kg/m2 for men. The prevalence of obesity (12 trials, n=106.553) was 33.2% in females and 18.2% in males. In 6 studies (n=66.591) that included a measurement of waist circumference, the values were 89.72 cm in women and 93.57 cm in men. Especially in women, the prevalence of abdominal obesity (5 studies, n=62331) was greater than that of general obesity (50.8% in women vs 20.8% in men). Meta-regression analysis revealed that the variance of the obesity prevalence between the studies could partly be explained by the age differences, but there was no temporal change in the prevalence of obesity during the years the studies were conducted. Conclusion: The prevalence of obesity, especially abdominal obesity, is considerably high in Turkish women and increases with advancing age. This finding points out that nationwide action plans against obesity, especially for women, should be designed and implemented by health policy makers. © 2018 Archives of the Turkish Society of Cardiology

Data On Prevalence Of Obesity And Waist Circumference In Turkey: Systematic Review, Meta-Analysis And Meta-Regression Of Epidemiological Studies On Cardiovascular Risk Factors

Scopu

Which Out-Of-Office Measurement Technique Should Be Used For Diagnosing Hypertension In Prehypertensives?

Hypertension (HT) is diagnosed with high office blood pressure (BP), although confirmation with the addition of out-of-office measurements is currently recommended. However, insufficient data are available concerning the use of out-of-office BP measurement techniques for the diagnosis of HT in the prehypertensive population. The aim of the present study was to determine which out-of-office measurements yielded earlier and more frequent detection of development of HT in prehypertensive patients. Two hundred seven prehypertensive patients under monitoring in the Cappadocia cohort were included in the study. Office BP was measured five times at 1-min intervals, followed by 24-h ambulatory BP monitoring (24-h ABPM). Home BP measurement (HBPM) was performed five times, at the same times in the morning and evening, at 1-min intervals for 1 week. The same procedure was carried out at 4–6-month intervals for ~2 years. HT was diagnosed in 25.6% of subjects, masked HT in 11.1%, and white coat HT in 2.9%, while 23.7% remained prehypertensive and 36.7% became normotensive. Briefly, 56.6% of the patients with HT were diagnosed with office plus 24-h ABPM, 13.2% with office plus HBPM, and 30.2% with office plus HBPM and 24-h ABPM. Office with 24-h ABPM yielded statistically significantly more diagnoses (p < 0.001). In conclusion, our prospective observational study evaluated the usefulness of out-of-office BP measurements in confirming diagnosis of HT in prehypertensive patients. The findings show that 24-h ABPM detected HT earlier and more frequently in this high-risk population. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.Scopu