The dynamics of the cellular composition of urine sediment in conditions of an artificial bladder

The evaluation of the urine cytological profile in the dynamics of adaptation of the orthotopic bladder to the functional properties of the urinary reservoir and determination of the connection between the cellular composition of the urine with the functional role of the formed from the intestinal fragment neocyst in experimental conditions and in humans. The material in experimental study were the results of a cytological study of the urine sediment obtained from 21 female pigs (mini-pigs). The portion of urine had received in experimental animals one month after orthotopic ileocystoplasty, 6 months and 1 year later and prepared as smear from the resulting precipitate. The level of lymphocytes, neutrophils, erythrocytes, as well as the superficial, intermediate and basal epitheliocytes evaluated during study. An analysis of the cell composition of centrifugal smears from the neocyst were performed in 21 patients with bladder cancer undergoing cystectomy and the formation of an orthotopic bladder, at various periods after surgery, from 3 months to 5 years. The preparation of a centrifugal sediment and the subsequent production of smears carried out as well as experimental animals

Superconductivity in multi-phase Mg-B-O compounds

Structures of MgB2-based materials manufactured under pressure (up to 2 GPa) by different methods having high superconducting performance and connectivity are multiphase and contain different Mg-B-O compounds. Some oxygen can be incorporated into MgB2 and boron into MgO structures, MgBx (X=4-20) inclusions contain practically no oxygen. Regulating manufacturing temperature, pressure, introducing additions one can influence oxygen and boron distribution in the materials and thus, affect the formation, amount and sizes of Mg-B-O and MgBx inclusions and changing type of pinning, pinning force and so affect critical current density jc. The boron concentration increase in initial Mg and B mixture allows obtaining sample containing 88.5 wt% of MgB12 with Tc of 37.4 K (estimated magnetically)

Urodynamic characteristics of lower urinary tract of patients with idiopathic overactive bladder

The aims of this study were to determine the frequency and clinical significance of individual urodynamic signs, which revealed on the basis of the results of comprehensive urodynamic examination of patients with the idiopathic overactive bladder (IOAB), to produce definitions of these features, and to describe any necessary remedial action. To identify the most common features and artifacts, we conducted a combined urodynamic examination of 137 patients with IOAB (105 women and 32 men). Age, comorbidities, and urodynamic parameters were analyzed to determine the association between bladder sensation and contractility. It was found that most patients suffer from the same type of bladder function impairment, often related to the decrease in the average effective capacity of the bladder, frequent urination, urgency urination, and urgent urinary incontinence events. Imperative nature of urination in patients with IOAB leads to the reduction maximum cystometric capacity in 75.9% of patients, increased bladder sensitivity threshold in 70.8%, detrusor overactivity in 35.8%, change in bladder compliance in 43.1%, and urethral instability in 24.8% of patients. Decreased ability of the bladder to accumulate and hold the urine under the normal or low intravesical pressure and frequent association of bladder instability with signs of obstructive urination are major peculiarities of the impaired urodynamics of the lower urinary tract in patients with IOAB

ОЦІНКА ПОТЕР ЕЛЕКТРОЕНЕРГІЇ В ТЯГОВІЙ МЕРЕЖІ МАГІСТРАЛЬНИХ ЗАЛІЗНИЦЬ

An indirect method of electric power losses determination in catenary has been examined. An example of solving such task with the help of specialized imitation model has been given and results of statistic analysis have been presented. Possible ways of using the obtained results have been exemplified.Рассмотрен косвенный метод определения потерь электроэнергии в тяговой сети. Приведен пример решения такой задачи с помощью специализированной имитационной модели и результаты статистического анализа полученных результатов. Показано возможное применение достигнутых результатов.Розглянуто непрямий метод визначення втрат електроенергії в тяговій мережі. Наведено приклад розв’язання такої задачі за допомогою спеціалізованої імітаційної моделі та результати статистичного аналізу отриманих результатів. Показане можливе застосування досягнутих результатів

Вплив нанооксидів титану на розподілення неметалевих включень і структуру металу шва низьколегованих сталей

The effect of titanium nanooxide on distribution of non-metallic inclusions and structure of weld metal under the welding of low alloyed steels has been studied. It is shown that the implementation into the welding pool of titanium nanooxide in the volume part of 0.5% promotes the formation of needle-shaped ferrite forms with increased mechanical properties.Исследовано влияние нанооксида титана на распределение неметаллических включений и структуру металла шва при сварке низколегированных сталей. Показано, что введение в сварочную ванну нанооксида титана в объемной части 0,5 об.% способствует формированию игольчатых форм феррита с повышенными механическими свойствами.Досліджено вплив нанооксиду титану на розподілення неметалевих включень і структуру металу шва при зварюванні низьколегованих сталей. Показано, що введення у зварювальну ванну нанооксиду титану в об’ємній частці 0,5 об.%  сприяє формуванню голчатих форм фериту з підвищеними механічними властивостями

Ensuring Power Balance in A Hybrid Power System with A Standby Generator

The combination of several non-guaranteed random energy sources (RES), conventional sources, and nonconstant consumer loads in a local system leads to stochastic power imbalances. This study objective consists in determining the possibilities of ensuring the power balance in a hybrid power generation system with a standby generator and a search for the methods of calculating the optimal parameters to achieve energy balance. This objective is achieved by simulating the processes inherent in wind and solar power engineering and the regimes of energy consumption through a combination of random functions with a standard probability distribution. Aggregated data on weather factors for several years in a region with a high renewable energy potential which can be used to describe the behavior of wind and solar energy over time were used as experimental data. The use of multiple simulations of random processes with calculated parameters has made it possible to draw conclusions about the presence of certain ratios of power and the generator control modes. These ratios can determine minimum energy and consumption losses, reduce the likelihood of energy imbalance, more efficiently use the reserved power. Specific features of the stochastic nature of RES related to the presence of trends and random fluctuations at short hourly intervals were additionally taken into account. Possibilities of varying the conditions of and switching on and off of the standby generator were provided. The existence of some ranges was established for the installed power of the generator outside which its use becomes inefficient. The proposed approach makes it possible to find the probability of various system states, assess the reliability of energy supply, and minimize unproductive losses

Наш опыт использования мрт в диагностике опухолевых заболеваний предстательной железы

Nowadays incidence rates of prostate cancer are progressively increasing, but modern methods of diagnosis and treatment give doctors the opportunity to effectively resist the onslaught of this pathology. Nevertheless, modern medicine still needs, even more reliable and informative methods for diagnosing early forms of prostate cancer. The article cites our experience with MRI for prostate cancer. A comparative analysis of MRI indicators in groups of patients with prostate cancer and BPH, as well as a comparison of the MRI method with other methods recommended for the diagnosis of prostate cancer.Сегодняшние показатели заболеваемости РПЖ прогрессивно увеличиваются, однако современные методы диагностики и лечения дают врачам возможность эффективного противостоять натиску данной патологии. Тем не менее современная медицина все еще нуждается, на наш взгляд, в еще более достоверных и ниформативных методов диагностики ранних форм РПЖ. В статье приведен наш опыт применения МРТ при РПЖ. Проведен сравнительный анализ показателей МРТ в группах больных с РПЖ и ДГПЖ, а также сравнение метода МРТ с другими методами, рекомендованными для диагностики РПЖ

Femtosecond Laser-Induced Periodic Surface Structures on 2D Ti-Fe Multilayer Condensates

2D Ti-Fe multilayer preparation has been attracting increased interest due to its ability to form intermetallic compounds between metallic titanium and metallic iron thin layers. In particular, the TiFe compound can absorb hydrogen gas at room temperature. We applied femtosecond laser pulses to heat Ti-Fe multilayer structures to promote the appearance of intermetallic compounds and generate surface nanostructuring. The surface pattern, known as Laser Induced Periodic Surface Structures (LIPSS), can accelerate the kinetics of chemical interaction between solid TiFe and gaseous hydrogen. The formation of LIPSS on Ti-Fe multilayered thin films were investigated using of scanning electron microscopy, photo-electron spectroscopy and X-ray diffraction. To explore the thermal response of the multiple layered structure and the mechanisms leading to surface patterning after irradiating the compound with single laser pulses, theoretical simulations were conducted to interpret the experimental observations

Оценка эффективности терапии идиопатического гиперактивного мочевого пузыря с применением метода биологической обратной связи

Мета дослідження: оцінювання змін показників електроміографії (ЕмГ) у жінок з гіперактивним сечовим міхуром (ГАСм), вивчення можливості корекції адаптаційних можливостей сечового міхура методом біологічного зворотного зв’язку (БЗЗ) у поєднанні з ETS (ЕмГ-тригерна електростимуляція) м’язів тазового дна. Обстежено 73 жінок із симптомами ГАСм. На підставі даних уродинамічного дослідження пацієнток розподілили на групи: І група (n=34) – хворі з детрузорною гіперактивністю; ІІ група (n=39) – хворі з ГАСм без детрузорної гіперактивності.The objective: the aim of the study was to assess changes in electromyography (EMG) parameters in women with overactive bladder (OAB) and explore the possibility of correction adaptive capacities of the bladder using biofeedback (BFB) in conjunction with ETS (EMG-trigger electrical stimulation) muscles of the pelvic floor. The study involved 73 women with symptoms of OAB. Based on the data of the urodynamic study, patients were divided into groups: group I (n=34) – patients with detrusor hyperactivity; group II (n=39) – patients with GASM without detrusor hyperactivity.Цель исследования:оценка изменений показателей электромиоrpафии (ЭМГ) у женщин с гиперактивным мочевым пузырем (ГАМП), изучение возможности коррекции адаптационной способности мочевого пузыря методом биологической обратной связи (Бос) в сочетании с ETS (ЭМГ-триггерная электростимуляция) мышц тазового дна. обследованы 73 женщины с симптомами ГАМП. на основании данных уродинамического исследования пациенток распределили на группы: І група (n=34) – больные с детрузорной гиперактивностью; ІІ група (n=39) – больные с ГАМП без детрузорной гиперактивности