Novel superconducting phases of Tl-based compounds

Researchers report the measurements of the I(sub c)(T) of the 102 K phase. They also discuss briefly the composition of the lattice parameters and the ac susceptibility relation to the grain size and microstructure

Novel superconducting phases of Tl-based compounds

Several new superconducting phases of the Tl-based compounds were prepared. Structural studies revealed cell lengths of 31.9 A and longer. Properties of Ce-containing compounds are also discussed

Darboux transformation for two component derivative nonlinear Schr\"odinger equation

In this paper, we consider the two component derivative nonlinear Schr\"{o}dinger equation and present a simple Darboux transformation for it. By iterating this Darboux transformation, we construct a compact representation for the $N-$soliton solutions.Comment: 12 pages, 2 figure

Modern methods of Ta₂O₅ coatings deposition for biomedical applications

The study of e-beam evaporated Ta₂O₅ film structure and properties effect on cell/material response was performed. The surface properties and structure of e-beam evaporated Ta₂O₅ films were investigated by means of XPS and XRD methods. The cytotoxicity and cytocompatibility were estimated by in vitro tests. Films of Ta₂O₅ are bio- and chemically inert, which allows their use in various medical applications, e.g., in diagnostic and treatment techniques employing short-range quasi-static electric fields for stimulation of positive biological processes in live organisms.Дослідження структури та властивостей покриттiв Ta₂O₅, які нанесено методом електронно-променевого випарювання, було зроблено методами рентгеноструктурного аналізу та фотоелектронної спектроскопії. Цитотоксичнiсть i цiтосумiснiсть були визначені in vitro. Плiвки Ta₂O₅ мають бiо- та хімічно- інертні властивості, що сприятиме їх застосуванню з метою діагностики та лікування з використанням близькодіючих квазiстацiонарних електричних полів, якi стимулюють позитивні біологічні процеси.Исследования структуры и свойств покрытий Ta₂O₅, нанесенных методом электронно-лучевого испарения, были проведены методами рентгеноструктурного анализа и фотоэлектронной спектроскопии. Цитотоксичность и цитосовместимость были определены in vitro. Пленки Ta₂O₅ являются био- и химически- инертными, возможно их применение для диагностики и лечения с использованием близкодействующих квазистационарных электрических полей, стимулирующих позитивные биологические процессы

Impact of baseline anemia on the short- and long-term prognosis of patients presenting with non-st-elevation myocardial infraction (NSTEMI)

Anaemia at admission is a known predictor of death in patients with myocardial infarction with ST-elevation (STEMI). Data on the effect of anaemia on the prognosis in patients with non-ST-elevation myocardial infarction (NSTEMI) is less readily available. Purpose: We aimed to evaluate the frequency of anaemia in a Bulgarian tertiary centre NSTEMI patient population, and its effect on the immediate and extended prognosis of the patients. Methods: We performed ambispective analysis of 138 consecutive patients with NSTEMI, and anaemia was defi ned as haemoglobin at admission below 120 g/L for females and below 130 g/L for males. Results: There was no signifi cant difference in the frequencies of standard risk factors between patients with and without anaemia. Anaemic patients tended to be older, with lower body mass index and worse kidney function. Patients with baseline anaemia tended to have higher GRACE risk scores and a larger size of the realised myocardial infarction as judged by maximal reached troponin I. There was no signifi cant difference in interventional treatment in both groups. Median hospital stay was signifi cantly longer in anaemic patients and was marked by more complications. Despite a lack of increase in inhospital bleeding and no difference in treatment with oral antiaggregants, patients with anaemia received haemotransfusion treatment more often. Mortality rate was higher in anaemic patients both during the index hospitalization and during the follow up. Conclusion: Anaemia at admission is associated with an increased risk of both in hospital cardiovascular complications and after dehospitalisation all-cause mortality in patients with NSTEMI and should be considered as an additional risk factor in the global risk assessment of patients

Impact of the COVID-19 pandemic on the incidence and prognosis of acute myocardial infarction - a single-center restrospective analysis

Introduction: COVID-19 pandemic has led to a signifi cant change in the incidence and prognosis of acute myocardial infarction (AMI) by indirect and direct mechanisms. Aim: To assess the impact of the COVID-19 pandemic on the incidence and prognosis of AMI. Material and methods: We performed a retrospective analysis of consecutive patients with AMI (STEMI and NSTEMI) during two time periods – the complete lockdown in Bulgaria and one of the waves of the pandemic. We compared patients’ risk profi le, index event, investigations and treatment to a control group from the pre-pandemic period. Results: During the fi rst period we included 52 patients with AMI without COVID-19 and compared them to a control group of 66 patients. We found a decrease primarily in the number of patients with STEMI. The scores for assessing diseaseseverity (GRACE, APACHE II, SOFA) were higher in 2020 compared to the pre-pandemic period. More patients presented with acute congestive heart failure, mortality was similar. During the second period we included 83 patients, 21 of them with COVID-19 infection. System delay was increased in all patients. Disease severity scores and baseline troponin were higher especially in the COVID-19 group. In-hospital mortality was substantially higher in patients with COVID-19 compared to controls (23,8% versus 9%, р = 0,0375), probably due to increased incidence of cardiogenic shock and need for mechanical ventilation. Conclusion: During the complete lockdown there was a reduction in the number of patients admitted with AMI, higher incidence of acute congestive heart failure and similar mortality. During one of the waves of the pandemic we found a signifi cant increase in system delay, not exceeding the recommended time frame of 120 minutes, and in disease severity in all patients. Concomitant COVID-19 infection was associated with higher in-hospital mortality due to increased incidence of cardiogenic shock and need for mechanical ventilation

THE RESEARCH OF THE COMPOSITION OF SAFFLOWER SEED OIL OBTAINED BY METHOD OF COLD PRESSING

Safflower - oil crops, the seeds contain 25-37 % provisious oil and 12% protein. The object of the research used seeds of safflower varieties Iris. Studies of the fatty acid composition of safflower oil obtained by method cold pressing. It established that omega-6 fatty acids predominate in safflower oil.It is established that in safflower oil fatty acids of 18 and 16 groups prevail, the content of other fatty acids in the sum makes 1,2 %In the test sample there is a predominance of omega-6 fatty acids (concentration of 80 % linoleic and γ-linolenic fatty acids). The article presents the research of fatty acid composition of safflower oil obtained by method cold pressing. It established that in safflower oil fatty acids of 18 and 16 groups prevail, the content of other fatty acids in the sum makes 1,2 %. In the studied sample there is a predominance of omega-6 fatty acids (concentration of 80 % linoleic and γ-linolenic fatty acids). Also defined physic-chemical characteristics of safflower oil: the acid number AN = 1, 07 mg KOH/g, peroxide number PN = 8, 09 mmol/кгО2, anisidin number AN = 3,25. Humidity safflower oil 0,03 %. The obtained values for the qualitative characteristics indicate the advantages of using this type of oil: directly for food, as well as for the production of oilseeds, such as mayonnaise, sauces, spreads; as biofuel; when designing and optimizing the recipe-tour of animal feed

High p_T Spectra of Identified Particles Produced in Pb+Pb Collisions at 158GeV/nucleon Beam Energy

Transverse momentum spectra of pi^{+/-}, p, pbar, K^{+/-}, K^0_s and Lambda at midrapidity were measured at high p_T in Pb+Pb collisions at 158GeV/nucleon beam energy by the NA49 experiment. Particle yield ratios (p/pi, K/pi and Lambda/K^0_s) show an enhancement of the baryon/meson ratio for p_T>2GeV/c. The nuclear modification factor R_{CP} is extracted and compared to RHIC measurements and pQCD calculations.Comment: Quark Matter 2005 parallel section proceeding

Report from NA49

The most recent data of NA49 on hadron production in nuclear collisions at CERN SPS energies are presented. Anomalies in the energy dependence of pion and kaon production in central Pb+Pb collisions are observed. They suggest that the onset of deconfinement is located at about 30 AGeV. Large multiplicity and transverse momentum fluctuations are measured for collisions of intermediate mass systems at 158 AGeV. The need for a new experimental programme at the CERN SPS is underlined.Comment: invited talk presented at Quark Matter 2004, 10 page

System-size dependence of strangeness production in nucleus-nucleus collisions at sqrt{s_{NN}}=17.3 GeV

Emission of pi, K, phi and Lambda was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S and Pb+Pb, the system-size dependence of relative strangeness production in nucleus-nucleus collisions is obtained. Its fast rise and the saturation observed at about 60 participating nucleons can be understood as onset of the formation of coherent partonic subsystems of increasing size.Comment: Phys.Rev.Lett in print; version2: changes made according to the request of the referee