Поверхностные и оптические свойства бумаги, содержащей карбонат кальция

The article investigates the surface and optical properties of calcium carbonate paper obtained at the UzbekChinese enterprise Fergana stone paper company (Uzbekistan), in order to identify the possibility of their use at printing enterprises for printing multicolor products using traditional printing methods. According to the results of a quantitative assessment of the surface quality by the indirect Beck method, we can say that paper sample 1 has a smoothness like coated paper (750–1500 s), paper samples 2 and 3 – like calendered paper, so that these paper samples can be recommended for prints with increased quality requirements. Smaller values of roughness Ra and small depressions, expressed by darkening in the topographic AFM images, characterized sufficient homogeneity and density of the structure. It was also revealed that the surface of the paper samples has a high ability to specularly reflect the incident light, since the percentage of surface reflection is similar to that of coated papers. Samples of paper have a whiteness of about 90 % and do not have a tint, since the difference between the maximum and minimum values of the reflection coefficients on a white stack is not more than 10 %. The tested paper samples can be recommended without restrictions for double-sided printing, since the opacity index is more than 92 %.Исследованы поверхностные и оптические свойства бумаги из карбоната кальция, полученной в условиях Узбекско-китайского предприятия Fergana stone paper company (Узбекистан), с целью выявления возможности ее использования на полиграфических предприятиях для печати многокрасочной продукции с применением традиционных способов печати. По результатам количественной оценки качества поверхности косвенным методом Бека можно утверждать, что образец бумаги № 1 обладает гладкостью, как у мелованной бумаги (750–1500 с), образцы бумаги № 2 и 3, как у бумаг каландрированных, которые можно рекомендовать для изданий с повышенными требованиями к качеству. Меньшие значения шероховатости Ra и небольшие углубления, выраженные затемнением на топографических АСМ-изображениях, характеризовали достаточную однородность и плотность структуры. Также выявлено, что поверхность образцов бумаги обладает высокой способностью зеркально отражать падающий свет, так как процент отражения поверхностей такой же, как у мелованных бумаг. Образцы бумаги имеют белизну порядка 90 % и нет оттенка, так как разница между максимальным и минимальным значениями коэффициентов отражения на белой стопе не больше 10 %. Исследуемые образцы бумаги можно без ограничений рекомендовать для двусторонней печати, так как показатель светонепроницаемости больше 92 %

Antibiotic therapy of chronic prostatitis in elderly and senile age

The etiological structure of chronic bacterial prostatitis in 110 of patients of elderly and senile age was studied. It was noted, that the agents of this nosology were in most of the cases - conditional-pathogenic pathogens of the family Enterobacteriaceae. Considering the clinical and microbiological efficacy, safety and tolerability of the antibiotic, the drug of choice of antibacterial therapy is a new generation fluoroquinolone - levofloxacin, which meets the requirements of the WHO.Изучена этиологическая структура хронических бактериальных простатитов у 110 пациентов пожипого и старческого возраста. Установпено, что в большинстве случаев возбудителями данной нозологии являются условно-патогенные микроорганизмы семейства энтеробактерий. Учитывая клинико-микробиологическую эффективность, безопасность и переносимость антибиотика препаратом выбора антибактериальной терапии является фторхинолон нового поколения левофлоксацин, отвечающий требованиям ВОЗ

THE INFLUENCE OF METABOLIC SYNDROME ON HEART ABNORMALITIES IN PATIENTS WITH ARTERIAL HYPERTENSION

Aim: To evaluate structural and functional heart abnormalities in patients with arterial hypertension (AH) with and without metabolic syndrome.Materials and methods: The study included 303  patients with AH I, II and III, aged from 25 to  70  years (mean±SD 52±18 years). All patients were categorized into 3 groups according to severity of AH (AH I, II and III corresponded to groups 1, 2 and 3, respectively). Within each group, patients were subdivided into 2 subgroups: without metabolic syndrome (n=151) and with metabolic syndrome (n=152). Assessments included measurements of blood glucose and lipids, 24-hour monitoring of blood pressure, echocardiography with calculation of myocardial mass index of left ventricle and the use of conventional and tissue myocardial dopplerography.Results: Already at early stage of AH (gr. I), 60% patients with metabolic syndrome and 32% patients without metabolic abnormalities had some degree of left ventricular remodeling, including concentric type of remodeling in 12 and 20%, excentric hypertrophy in 18 and 6%, concentric left ventricular hypertrophy in 30 and 6%, respectively. In AH I, an increase of myocardial mass index of left ventricle was found in 39% of patients with metabolic syndrome and in 12% patients without it. In patients with AH I, abnormalities of left ventricular diastolic function according to the results of tissue myocardial dopplerography was seen in 82% of patients with metabolic syndrome and in 42% of patients without metabolic syndrome. Patients with AH I–III and metabolic syndrome had almost 5-fold higher probability of heart abnormalities than AH patients without metabolic disturbances (odds ratio 4.8, 95% confidence interval 1.9–6.4, p< 50 and>50 years).Conclusion: Metabolic syndrome contributes to heart abnormalities irrespective of gender, age and AH grade

MONITORING OF THE ENVIRONMENTAL STATE OF THE RIVERS OF THE CHECHEN REPUBLIC

The ecological status of the river Argun and Squirrel. It is shown that the Argun River and Squirrel are classified as "moderately polluted" water quality class III. The basic measures to protect water resources from pollutants CR

Heart pathology in patients with arterial hypertension and metabolic syndrome

Aim: To study the specifics of heart pathology in patients with Stage I-III arterial hypertension (AH) and present or absent metabolic syndrome (MS).Material and methods: The study included 303 patients with Stage I-III AH and MS, aged 25-70 years (mean age 52±18 years); 110 men and 193 women. All patients were divided into 2 groups (AH+MS and AH-MS) by MS presence or absence, respectively. The groups were comparable by sex and age distribution. Each group was also divided into three subgroups by AH stage (I-III). Left ventricular (LV) diastolic dysfunction (DD) was assessed by transmitral flow dopplerography (TFD), pulmonary vein dopplerography (PVD), and impulse-wave myocardial tissue dopplerography (MTD).Results: In patients with AH and MS, LV myocardial mass increase and LV remodelling were observed at earlier AH stage, comparing to MS-free hypertensive patients. MTD demonstrated early LV diastolic dysfunction in 85 % and 88 % of the Stage I and Stage II AH patients, respectively. For TFD method, these figures were 33 % and 44 %, respectively.Conclusion. The combination of MS and Stage I-III AH, comparing to AH only, was characterized by more severe LV diastolic dysfunction and LV remodelling at early stages of the disease