556 research outputs found

    X-ray galaxies selected from HyperLEDA database

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    We cross-matched the 4XMM-DR10 catalog with the HyperLEDA database and obtained a new sample of galaxies that contain X-ray sources. Excluding duplicate observations and false matches, we present a total of 7759 galaxies with X-ray sources. In the current work, we present general properties of the sample: namely the distribution in equatorial coordinates, radial velocity distribution, morphological type, and X-ray fluxes. The sample includes morphological classification for 5241 galaxies with X-ray emission, almost half of which, 42% are elliptical (E, E-S0). Most galaxies in the sample have nuclear X-ray emission (6313 or 81%), and the remaining 1443 (19%) present X-ray emission from the host galaxy. This sample can be used for future deep studies of multi-wavelengths properties of the galaxies with X-ray emission

    Manifold-like matchbox manifolds

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    A matchbox manifold is a generalized lamination, and is a continuum whose arc-components define the leaves of a foliation of the space. The main result of this paper implies that a matchbox manifold which is manifold-like must be homeomorphic to a weak solenoid.Comment: Various text edits in version

    Naked barley: taxonomy, breeding, and prospects of utilization

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    This review surveys the current state of taxonomy, origin, and utilization prospects for naked barley. The cultivated barley Hordeum vulgare L. incorporates the covered and naked barley groups. Naked barleys are divided into six-row naked barley (convar. сoeleste (L.) A. Trof.) and two-row naked barley (convar. nudum (L.) A. Trof.). The groups include botanical varieties differing in the structural features of spikes, awns, floret and spikelet glumes, and the color of kernels. The centers of morphogenesis for naked barley are scrutinized employing archeological and paleoethnobotanical data, and the diversity of its forms. Hypotheses on the centers of its origin are discussed using DNA marker data. The main areas of its cultivation are shown, along with possible reasons for such a predominating or exclusive distribution of naked barley in highland areas. Inheritance of nakedness and mechanisms of its manifestation are considered in the context of new data in genetics. The biochemical composition of barley grain in protein, some essential and nonessential amino acids, β-glucans, vitamins, and antioxidants is described. Naked barley is shown to be a valuable source of unique combinations of soluble and insoluble dietary fibers and polysaccharides. The parameters limiting wider distribution of naked barley over the world are emphasized, and breeding efforts that could mitigate them are proposed. Pathogen-resistant naked barley accessions are identified to serve as promising sources for increasing grain yield and quality. Main stages and trends of naked barley breeding are considered and the importance of the VIR global germplasm collection as the richest repository of genetic material for the development of breeding is shown

    The problem of obesity «through the eyes» of patients (results of the survey of patients of the outpatient registry)

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    Aim. To assess, based on the results of the questionnaire, patients' awareness of the presence, possible causes and health effects of overweight /obesity; to determine patients' self-assessment of their own weight, information about the methods used to treat the disease, adherence to therapy.Material and methods. The survey of patients of the outpatient registry was carried out as part of a face-to-face visit of inclusion in the observational study of EVA using a specially designed questionnaire. Out of 582 patients of the PROFILE registry who came for a visit in the period from 08.04.2019 to 24.03.2020, 295 people with a body mass index (BMI) were included in the study>25 kg/m2.Results. According to the BMI values, the patients of the study cohort were divided into 4 groups: 108 (36.6%) with pre-obesity, 124 (42.1%) with class I obesity, 42 (14.2%) with class II obesity, 21 (7.1%) with class III obesity. With an increase in the class of obesity, the number of patients who admit the presence of this pathology in self-assessment increases (p<0.0001): 26.6% of patients with grade I obesity, 47.6% with grade II obesity and 81% of patients with grade III obesity gave correct answers. Among the possible causes of overweight/obesity, every third patient of the study indicated physical inactivity (31.3%) and every fifth specified excessive nutrition (20.8%). The majority of patients, 244 (82.7%), believe that being overweight worsens their health, the same number of patients, 255 (86.4%), are sure that they need to lose weight. The most common (70% of responses) for weight loss patients used various dietary restrictions, fasting, only 17% of patients increased the level of physical activity. Frequent violation of the principles of rational nutrition was revealed (insufficient amount of fruits and vegetables in the diet, salting food, eating a large amount of easily digestible carbohydrates. One hundred and thirty nine (47.1%) patients noted that it was difficult for them to observe any restrictions in food, to adhere to a diethalf of all patients and 70% of patients with class III obesity experience a constant feeling of hunger. Of the 25 patients to whom pharmacotherapy was recommended, 21 (84%) people were adherent.Conclusion. Overweight and obese patients are not always critical of self-assessment of their body weight, and the main reasons for being overweight or obese considered to be inactivity and various violations of the principles of rational nutrition. The patients of the study cohort were characterized by eating disorders and half of the patients showed signs of food addiction. Recommendations for the pharmacotherapy of obesity were received by less than 10% of patients in the study cohort, while the patients' adherence to drug therapy was high


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    Aim. To study the effect of sacubitril/valsartan compared with valsartan on natriuresis, diuresis, blood pressure (BP) and the level of biomarkers in hypertensive patients.Material and methods. Hypertensive patients (n=16) received sacubitril/valsartan 400 mg QD or valsartan 320 mg QD for 7 days in a double-blind,-randomized, cross-over study. The change in 24-hour diuresis and natriuresis, fractional urinary sodium excretion, and BP level have been studied, as-well as soluble biomarkers: cyclic guanosine monophosphate (cGMP), plasma brain natriuretic peptide (BNP), mid-regional precursor of the atrial natriuretic-peptide (MR-proANP) and the N-terminal precursor of the brain natriuretic peptide (NT-proBNP).Results. The trend toward higher levels of 24-hour natriuresis on Day 1 (21%, p=0.068) was found in the sacubitril/valsartan group compared to-valsartan one. Fractional sodium excretion was significantly higher in the sacubitril/valsartan group on Day 1 after 6 hours (50%, p=0.004) and subsequent-samples up to 12 hours; the maximum effect was achieved 2-4 hours after taking the medication (mean value 2.08, p=0.005). Sacubitril/valsartan-therapy compared with valsartan therapy was associated with a significant increase in 24-hour diuresis on Day 1 (41%, p<0.05), but not on Day 7-(15%, p=0.134). Sacubitril/valsartan therapy, in contrast to valsartan therapy demonstrated a significant increase in 24 h cGMP urinary excretion-on Day 1 (95%, p<0.001) and Day 7 (83%, p=0.001). Sacubitril/valsartan lowered BP more effectively than valsartan [on Day 7, 12 hours after-taking the drug, the differences were13.6 mm Hg (p=0.004) for systolic and6.7 mm Hg (p=0.03) for diastolic BP. The decrease in the level of-NT-proBNP and MR-proANP in plasma and the transient increase in the level of BNP were found in the sacubitril/valsartan group. Both sacubitril/valsartan and valsartan therapies were well tolerated and safe.Conclusion. Sacubitril/valsartan therapy in hypertensive patients compared with valsartan therapy was associated with transient increase in natriuresis and diuresis, more pronounced decrease in BP and changes in biomarker levels reflecting persistent inhibition of neprilysin and decrease in myocardial wall tension
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