Lightening of ceramic bricks based on red-burning clay

To determine the possibility of using a mineral pigment based on the rutile form of titanium dioxide in the production of volume-colored ceramic brick in order to obtain lighter brick tones the studies are conducted. The previously studied low-melting clay of the Tyumen deposit was used as a basis. It was established that significant lightening of the brick does not occur even with the introduction of 8% of the specified pigment, although some lightening is appeared. In addition, with the pigment introduction, an increase in water absorption of bricks is observed, which leads to a decrease in the sample strength. Increasing the firing temperature to 950°C does not lead to an improvement in the quality characteristics of the samples, and even vice versa makes them worse. Thus, the use of a white pigment under investigation does not give a significant effect of lightening of ceramic red-burning clay. © 2019 IOP Publishing Ltd. All rights reserved

RESEARCH OF OVERLAY CLAY ROCKS PROPERTIES IN ORDER TO DETERMINE THEIR SUITABILITY IN THE PRODUCTION OF CERAMIC MATERIALS

Рассмотрена возможность утилизации вскрышных глинистых пород, образующихся при добыче доломита. Представлены свойства глины (химический и минеральный состав) и образцов керамики, полученной на основе этой глины. Установлено, что технология производства керамики на основе исследуемой вскрышной породы должна включать обязательное измельчение глины до размера частиц менее 0,5 мм. По предложенной технологии производства на основе это глины возможно получение лицевого строительного кирпича и керамической черепицы с морозостойкостью более 100 циклов, а также получение гончарных непроницаемых изделий.The possibility of utilization of overburden clay rocks formed during the extraction of dolomite is considered. The paper presents the properties of clay and ceramic samples obtained on the clay basis. It was found that for the manufacture of ceramics, clay should be crushed to a particle size of less than 0.5 mm. According to the proposed technology, it is possible to obtain front ceramic bricks, ceramic tiles with high frost resistance, as well as impervious pottery

PRODUCTION OF ALLOYED REACTIVE ALUMINUM FROM NATURAL OR INDUSTRIAL RAW MATERIALS

The paper reviewed the production of alumina by the acid method. The dependence of the change in the phase composition on the firing temperature is analyzed. The process of sulfuric acid leaching is considered.В работе исследована возможность легирования порошков оксида алюминия, получаемых кислым способом, добавками оксидов магния и циркония с целью улучшения их физико-химических свойств

Azoloazines as Perspective Antiglycating Agents for Therapy of Diabetes Complications

This work was supported by Russian Federation Ministry of education and science (grant № 4.6351.2017/8.9) and Russian Foundation for Basic Research (grant № 18-03-00787)

Application of modern immunological methods in the diagnosis of tuberculosis in HIV-infected patients

Combination of TB and HIV-infection is still the most nowadays important problem, and it connects not only with steady growth of HIV infection, but with difficulties in TB diagnosis. X-ray lung studies often have unusual nature, clinical symptomatology appears when process are hard and spread. At the same time in global practice IGRAtests applying, to which they belong to SPOT.TB test and QuantiFERON®-TB Gold test, they pay great attention to it, particularly among patients with HIV- infection. In study there were data when 41 patients with lung TB were examined, 56 HIV-positive patients with lung TB and 58 healthy donors. When active TB IGRA-test and test with Diaskin test show comparable same results. Against the backdrop of HIV skin tests (Mantoux test with 2 TE and tests with Diaskin test) it was demonstrated direct dependence of level immunosuppression in contrast to IGRA – tests, that allows to carry out these researches in conditions when standard skin tests do not work

TREATMENT EFFICIENCY OF DRUG SUSCEPTIBLE PULMONARY TUBERCULOSIS

The article describes the study of comparative efficiency of fenazid (isonicotinoilhydrazine-О,N’) ferrous dihydrate sulphate (II) and isoniazid in drug susceptible pulmonary tuberculosis patients.The high treatment efficiency namely significant improvement and improvement was observed in the patients of Group 1 – 84.1% which could be compared to the standard treatment regimen (85-7%) in Group 2. The total number of adverse reactions in the main group was confidently lower – 18.6% against 33.9%, p < 0.05. Hepatotoxic reactions with 2-3 fold increase of alaninetransferase level was registered significantly less (9.3%) in Group 1 compared to the Group treated with isoniazid

Plasma concentrations of coffee polyphenols and plasma biomarkers of diabetes risk in healthy Japanese women

Coffee consumption has been reported to reduce the risk of type 2 diabetes in experimental and epidemiological studies. This anti-diabetic effect of coffee may be attributed to its high content in polyphenols especially caffeic acid and chlorogenic acid. However, the association between plasma coffee polyphenols and diabetic risks has never been investigated in the literature. In this study, fasting plasma samples were collected from 57 generally healthy females aged 38-73 (mean 52, s.d. 8) years recruited in Himeji, Japan. The concentrations of plasma coffee polyphenols were determined by liquid chromatography coupled with mass tandem spectrometer. Diabetes biomarkers in the plasma/serum samples were analysed by a commercial diagnostic laboratory. Statistical associations were assessed using Spearman's correlation coefficients. The results showed that plasma chlorogenic acid exhibited negative associations with fasting blood glucose, glycated hemoglobin and C-reactive protein, whereas plasma total coffee polyphenol and plasma caffeic acid were weakly associated with these biomarkers. Our preliminary data support previous findings that coffee polyphenols have anti-diabetic effects but further replications with large samples of both genders are recommended

ECONOMIC BENEFITS OF LEFT VENTRICULAR HYPERTROPHY REGRESSION IN PATIENTS WITH ARTERIAL HYPERTENSION

Aim. To evaluate by modelling the economic benefits of left ventricular hypertrophy (LVH) regression in patients with arterial hypertension (HT) due to therapy with fixed combination of valsartan/amlodipine.  Material and methods. 20 patients (15 females and 5 males, aged 18 to 70 years) with essential HT accompanied by metabolic syndrome with a history of previous ineffective antihypertensive therapy were included into the study. All patients were treated with fixed combination of amlodipine/valsartan in doses of 5/160 and 10/160 mg depending on blood pressure (BP) level. Treatment duration was 24 weeks. Changes in BP level, LVH regression were assessed. Economic evaluation was performed on the basis of modelling with the specialized software Decision Tree 4.xla. Results. Effect of fixed amlodipine/valsartan combination therapy on LVH was used to estimate treatment effectiveness and to build the model. Patients were distributed according to left ventricular (LV) mass (at baseline and after 24 weeks of therapy). Significant decrease in LV mass from 205.8±50.4 to 181.9±45.1 g (p<0.05) was revealed. The model took into account economic and frequency factors for 10 year prognosis: this therapy prevents 36 deaths, 6 strokes, 24 myocardial infarction per 1000 patients. Absence of need in treatment of these prevented events can save 2 516 772.42 RUR for every 1 000 patients. It would reduce the total costs per patient during 10 years. Conclusion. Treatment with amlodipine/valsartan single pill combination has not only clinical advantages, but also pharmacoeconomic benefits. This combination reduces risk of acute myocardial infarction and death more effectively. Treatment with fixed valsartan/amlodipine combination saves maximum years of life with less cost during 10 years. Despite of higher pharmacotherapy costs, fixed valsartan/amlodipine combination reduces total costs due to prevention of fatal and nonfatal cardiovascular events

Antioxidants and Cognitive-Behavioral Therapy in Patients with Functional Dyspepsia

Аim: development of an algorithm for the use of antioxidant cognitive-behavioral therapy in adult patients with functional dyspepsia.Material and methods. The study included 112 adult patients with functional dyspepsia receiving the antioxidant drug Cytoflavin containing succinic acid, inosine, nicotinamide and riboflavin, and cognitive behavioral therapy according to the method of Beck and Jacobson in addition to the main therapy (prokinetics, proton pump inhibitors, psychotropic drugs).Results. Of the total group, 74 patients had an optimal response to the inclusion of an antioxidant and psychotherapy in the treatment regimen (increased quality of life and reduced anxiety) and 38 patients had the insignificant response. It has been established that the main predictors of the successful use of an extended treatment regimen are the patient's disadaptation in relation to the disease, a recent stress factor, the duration of functional dyspepsia, the presence of an overlap syndrome (combination with other functional gastrointestinal disorders).Conclusions. Based on the collection of a small amount of anamnestic information (the duration of functional dyspepsia, the presence of an acute stress factor in the anamnesis), the assessment of the presence of an overlap syndrome and disadaptation in relation to the patient to his illness, the value of the discriminant function is calculated. After comparing it with a threshold, the probability of a positive response to a combination of antioxidant and cognitive-behavioral therapy is estimated. The developed prediction algorithm is valid (sensitivity — 91 %, specificity — 73 %, accuracy — 84.8 %) and allows to optimize the definition of treatment tactics for a patient with functional dyspepsia

Injuries in physical education classes

In foreign and domestic literature, the problems of combating various types of injuries are widely considered, and there are absolutely insufficient issues on the organization of trauma care and prevention of injuries in physical education classes. In physical education classes, most students are at risk of people who are prone to injury, because the class differs from other subjects by high motor activty, the use of various equipment and sports equipmentВ зарубежной и отечественной литературе довольно широко рассматриваются проблемы борьбы с различными видами травматизма и совершенно недостаточно вопросы по организации травматологической помощи и профилактики травматизма на занятиях физической культурой. На занятиях физической культурой большинство студентов входят в группу риска людей, которые подвержены травматизму, потому что занятие отличается от других предметов высокой двигательной активностью, использованием различного инвентаря и спортивного оборудовани