Uzhhorod National University

About: Uzhhorod National University is a education organization based out in Uzhhorod, Ukraine. It is known for research contribution in the topics: Raman spectroscopy & Laser. The organization has 1089 authors who have published 1056 publications receiving 5187 citations. The organization is also known as: State Higher Education Establishment "Uzhhorod National University" & Uzhhorod State University.

Spectroscopic diagnostics of the laser erosion plasma of lead

Abstract: Time-averaged emission spectra of a laser erosion plasma formed during the action of a neodymium laser [W=(3–5)×108 W/cm2, λg=1.06 μm, τ=20 ns, f=12 Hz] on a lead target were measured for laser torch regions spaced by r=1 and 7 mm from the target. The spatial dynamics of population of the excited states and the electron temperature in the laser torch are analyzed.

Construction of a criterion for testing hypothesis about covariance function of a stationary Gaussian stochastic process with unknown mean

Abstract: In the paper, a new criterion is constructed for testing hypothesis about covariance function of Gaussian stationary stochastic process with an unknown mean. This criterion is based on the fact, that we can estimate the deviation of covariance function from its estimator with a given accuracy and reliability in Lp metric.

Temperature Dependence of the Refractive Index of Glassy Alloys of the As x S 100- x System

Abstract: The temperature coefficient of the refractive index of glassy alloys in the As–S system along the As x S100–x (0 < x < 40) branch is determined in the 1–5 μm spectral interval for temperatures of 77–400 K. It is found that these glasses have negative, zero, and positive values of dn/dT, depending on the composition and wavelength. A single-oscillator model is used to analyze the spectral and temperature dependences of this coefficient.

Syndromal characteristics of the combined course of chronic pancreatitis and arterial hypertension.

Abstract: Objective The aim:To study the clinical course of chronic pancreatitis (CP) in patients with concomitant hypertension. Patients and methods Materials and methods: A thorough analysis of the results of subjective and clinical and laboratory examinations of 102 patients with CP, who were hospitalized in the therapeutic department of Khust district hospital during 2017-2018 was conducted. Results Results: Takingintoaccount that the initial examination of patients was carried out during the period of exacerbation of the disease, all patients presentedwith pain syndrome (100%).The overwhelming majority of patients identified pain as permanent aching discomfort in the abdominal cavity with periodic intensification (n = 41 (40,2%), 18 patients indicated burning pain (17,6%), 30 - cutting (29,4%) ), and 13 (12,7%) experienced pain of varying nature.due to the presence of hypertension (GC) 73 (71.6%) patients complained of a headache of a paroxysmal periodic pulsating character, which was most often localized in the occipital-frontal area and was accompanied by dizziness, "flickering of flies" before the eyes, noise in the ears. Also, 14 (13,7%) patients had shortness of breath at moderate physical exercise, lower extremity edema that appeared in the afternoon and disappeared by the morning.In addition, 33 (32,4%) surveyed patients indicated a periodic heartbeat.In 18 (17,7%) patients sporadic dizziness was observed. The level of blood pressure (BP), which was established in the studied patients, corresponded to arterial hypertension of grade 1-2 (154,15 ± 9,24 / 94,53 ± 9,05 mm Hg). In terms of heart rate (HR) in the examined patients, it was 80.26 ± 10.73 beats per minute. Conclusion Conclusions: According to the study, the negative impact of concomitant hypertension on the clinical course of chronic pancreatitis was established, namely: hypertension in most cases causes intensification of pain syndrome; pain syndrome in comorbid patients with cronic pancreatitis and arterial hypertension is accompanied by more pronounced manifestations of asthenisation: general weakness, lethargy;dependence of the duration of pain syndrome from the height of blood pressure and the duration of arterial hypertension was found; dyspepsia syndrome is more pronounced, varied and prolonged in patients with high blood pressure; smoking (37,3%), alcohol (19,6%), psychoemotional overload (6,9%) are common etiologic factors in comorbid patients with chronic pancreatitis and arterial hypertension; BMI results indicate the dominance of excess body mass in most comorbid patients with chronic pancreatitis and arterial hypertension.

The mechanism of the pulmoprotective action of carboxytherapy

Abstract: The problem of finding new ways for pharmacological prophylaxis and treatment of respiratory tract diseases is very relevant in public health. To eliminate hypoxia, many European and American clinics use carboxytherapy as an additional or alternative treatment. Carbon dioxide administration eliminates the sequels of oxygen starvation, by producing artificial tissue hypercapnia, which causes an increase in oxygen delivery and carbon dioxide removal from the tissues and then from the body. The main mechanism of action of carboxytherapy is associated with enhanced tissue oxygenation and is due to the Verigo-Bohr effect: the effect of CO2 concentration and pH on the binding of hemoglobin to oxygen and release of the latter from hemoglobin. By affecting the chemoreceptors of the respiratory center, carboxytherapy contributes to increased pulmonary ventilation and reduces bronchial smooth muscle tone and bronchial mucous secretion, as well as inflammation; all this improves breathing. By exerting a direct and reflex effect on the respiratory center, carboxytherapy induces hurried and deeper breathing, which increases pulmonary ventilation, speeds up perfusion and gas exchange in the lung, eliminates dyspnea and bronchospasm; therefore, it is widely used for lung diseases (asthma, pneumosclerosis, and silicosis). Carboxytherapy improves lung function in case of bronchopulmonary diseases, performance, and quality of life and it is used as an additional method in the pharmacotherapy of many diseases in pulmonology.