We carried out the methods` analysis for assessing the state of livestock micro-objects. It is showcased that in order to assess the state of embryos and determine the optimal biotropic parameters of the electromagnetic field for influencing embryos, in t
Obstructive mechanical jaundice is a well-researched complication of various diseases and causes, yet considering patients` condition with malignant diseases according to the stage of the malignant process, severity of complications and etc. Selection of the most appropriate method of surgical treatment is always an option where it is essential to consider finding a way between efficiency and surgical trauma. The aim of the research is to optimize the results of surgical treatment of patients with malignant tumours of the common bile duct terminal segment complicated by acute mechanical jaundice. Materials and methods: patients over 18 y.o. with duodenal obstruction; the presence of other active cancer pathology or blood diseases. The research was performed on 2 different groups divided according to the use of biliary passability restoring method concluding the preferability of minimally invasive methods of bile duct decompression. Results: minimally invasive methods are not inferior to the effectiveness of biliary decompression comparing to open methods, have a number of advantages, such as minimal invasiveness, relative safety, low incidence of complications and mortality Conclusions: the introduction of the developed algorithm for surgical treatment of blastomatous mechanical jaundice with the consistent use of antegrade and open methods, as well as antegrade, retrograde and “rendezvous” techniques in surgically incurable patients allowed to reduce the number of early postoperative complications from 32.7 % to 13.3 %, the number of complications requiring surgery – from 5.8 % to 1.3 % and the level of postoperative mortality – from 11.5 % to 2.7 %.
The object of research is the process that forms an elliptical directional diagram of the H-sector horn antenna for flow irradiation of seeds with the electromagnetic field. The emitter of electromagnetic energy is presented as one of the main elements of installations for irradiating seeds with an electromagnetic field before sowing. This parameter was investigated by taking into account the values of the biotropic parameters of the low-energy electromagnetic field under the conditions of flow processing. This paper reports a study into the parameters of the H-sector horn emitter for irradiation of sugar beet seeds with a low-energy electromagnetic field at a frequency of 73...75 GHz in continuous flow. Thus, one should use the H-sectoral horn emitter with the following parameters: aperture width aa=20 mm; horn length RH=35 mm; b=1.8 mm. It is determined that in order to irradiate sugar beet seeds on the conveyor plane with a power flow density of P=100 μW/cm2, it is necessary to place two horns 1200 mm above the conveyor at a distance of 2540 mm from each other. It was checked that the treatment of sugar beet seeds with electromagnetic radiation in a continuous flow with a capacity of 300 kg/h is possible with a power of up to 2 W supplied to two horn antennas; the speed of the conveyor is 15 cm/s. The parameters of the sectoral horn for an elliptical directional diagram were studied by dividing the main task into internal and external. According to the results of the research, it is possible to build a base of geometric presets for adjusting installations for different types of seeds, the desired performance, the structural features of installations, as well as existing emitters
The subject matter of the article: Sealed extractor with pressure. The goal of the work: Determination of hydrodynamic parameters of the sealed extractor with pressure. The following tasks were solved in the article: Theoretical research on the creation of a sealed extractor with pressure. It is need to development of ways of implementation and practical recommendations for the given technical solutions in the experimental sample. The following methods are used: Mathematical modeling, differential and integral calculus, experimental research methods. The following results were obtained: The processes occurring in sealed extractors are described mathematically. Parameters that affect the performance of aggregates are determined. Conclusions: As a result of the analysis of the technological process and equipment used in the factories for primary processing of wool, shortcomings and problems are identified and means for their elimination are proposed. It is proposed to use small-sized equipment to work on waste-free technology based on a hydrodynamic pressure extractor. Extraction as an efficient mass transfer process for removing organic components from aqueous solutions has the advantages of low operating temperatures and efficiency. The design features of the sealed pressure extractor are as follows: high angular velocities, the moment of inertia of rotating details, powerful pressure, the presence of nodes that provide a supply and discharge of liquids, tightness. The kinematic and geometric parameters of the rotor affect the sealed extractors’ performance). In sealed extractors, the heavy fraction in the field of centrifugal forces will accumulate on a large radius of the inner side of the rotor and for its movement it is necessary to create an excess pressure at the extractor inlet.
Tumor diseases of the BPDZ (biliopancreatoduodenal zone) occupy one of the leading places among the causes of disability and mortality of the population, both according to global and domestic statistics, while in 85–90 % of cases, patients with distal tumor biliary obstruction are detected. The most common symptom of malignant tumors of periampullary localization is OJ(obstructive jaundice), which is found in 86–95 % of patients and becomes the first manifestation of the disease in 65–70 % of cases. Purpose. Optimization of surgical treatment in surgically incurable patients with obstructive blastomatous jaundice. Materials and methods. The study was clinical in nature, it was carried out on the basis of CCH №17 (Kharkov, Ukraine) and the State Institution “Institute of General and Emergency Surgery named after V. I. Zaitsev National Academy of Medical Sciences of Ukraine ") and consisted of two stages. The main task of the first stage was a retrospective assessment of the results of antegrade and retrograde minimally invasive interventions performed in the period from 2006 to 2011 in 122 patients. The main objective of the second stage of the study was to assess the results of surgical treatment of 75 patients with blastomatous breast, who were treated from 2012 to 2019. using the developed treatment algorithm. Results. At the first stage of the study, the effectiveness of endoscopic transpapillary and transhepatic biliary excretion methods in patients with distal malignant obstruction of the gastrointestinal tract was compared, for which patients who underwent minimally invasive interventions were divided into two subgroups: group A (63 observations) biliary excretion, and in group b (59 observations) as biliary decompression antegrade percutaneous-transhepatic methods of drainage of bilious ways were applied. Endoscopic transpapillary surgery showed itself to be, not inferior to open surgery in effectiveness of biliary decompression, instead it has a number of advantages, such as low trauma, relative safety, low complication and mortality. Conclusions. The developed algorithm of bile excretion in incurable patients with blastomatous MF allowed to minimize the number of postoperative complications to 4.0 %, to avoid the development of transient hyperamylasemia and postmanipulation pancreatitis. Endoscopic retrograde methods of RV prosthetics as the final stage of surgical treatment in this category of patients have certain advantages over antegrade methods of external drainage, primarily due to the preservation of the natural passage of bile in the duodenum and better adaptation and tolerability by patients
The article discusses problems of early diagnosis and, accordingly, treatment of hepatorenal syndrome (HRS) in case of obstructive jaundice of blastomatous origin. The results of a comprehensive examination of 37 patients with blastomatous obstructive jaundice (OJ) with clinical and laboratory signs of HRS were analyzed. Patients were evaluated for clinical and biochemical parameters of blood and urine, blood electrolytes, indicators of the blood coagulation system according to unified methods. The main work is devoted to the determination of the biomarker of renal tubular damage, neutrophil-gelatinase-associated lipocaine (s-NGAL) as a marker and indicator of HRS severity, careful and detailed analysis, monitoring of levels (s-NGAL) and other bioactive substances as an indicator of treatment efficacy. Introduction of active ultrasound as a replacement for contrast computer tomography to reduce the load on precompromised kidneys. It has been proven that the level of renal tubular damage, neutrophil-gelatinase-associated lipocaine s-NGAL is an early marker of renal damage whose function is to reduce the severity of damage to the proximal tubules of the kidneys, normalize damaged tissue by participating in apoptosis, increase survival of damaged restoration of damaged epithelium, stimulation of differentiation and structural reorganization of renal epithelial cells. The fact that s-NGAL was not significantly reduced in the stage of recovery of diuresis, confirms the presence of patients with blastomatous MF severe and persistent toxic tubulointerstitial disorders. Based on this determination of the biomarker (s-NGAL) in the serum of patients with blastomatous mechanical jaundice and performing in them at primary ultrasound color Doppler mapping and pulsed wave Doppler imaging of the kidneys with the calculation of the resistance index may serve as early signs of damage.
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