147 research outputs found
Reclamation of plant wastes (straw) and obtaining (nano) chips with bactericidal properties based on them
Rape, camelina, wheat and Jerusalem artichoke vegetable wastes (straw) as annually renewable raw materials were processed into activated carbons, which were modified with silver nanoparticles for carbonaceous sorbents to acquire specific properties, since carbonaceous sorbents are usually widely used in the food industry, agriculture, medicine and other fields of human activity. The technology to obtain active carbons from agricultural crop residues has been developed, active carbon physico-chemical and adsorption properties, textural characteristics have been studied, new functional carbon (nano) materials with antibacterial activity containing (nano) particles of silver have been obtained, their influence within (nano) chip composition on rape crop growth, development and yield has been studied. In the conducted field tests, the highest activity was noted when using the (nano) chip whose structure included RAC - camelina and silver nanoparticles. Besides, when nano chips are used for seed treatment, the yield increase makes up 11.6 % for nanoparticles containing Ag, for plant active carbons (PAC) (rape) with Ag this index makes up 28.1 %, for RAC (Camelina) with Ag it makes up 55.8 % (compared to the control variant), which can be explained by the differences in the sorption characteristics of the studied radio activated carbons. Our results and the previous studies of other authors can prove the fact that silver nanoparticles (including those being a part of (nano) chips) "get" into the biochemical processes and have a pronounced phytostimulating effect on plants, which was especially obvious when suppressing the activity of plant pathogenic microflora by silver nanoparticles
Optimization approaches to dispensary observation of patients with polymorbid pathology on the metabolic syndrome background
Development of new approaches to the implementation of dispensary observation (DO) of patients with polymorbid pathology against the background of the metabolic syndrome (MS) and the evaluation of their efficiency were considere
Quantitative Estimation of Logging Residues by Line-Intersect Method
Line intersect sampling (LIS) is a method used for quantifying forest residues after logging operations. In conventional LIS theory, forest residues are considered as separate pieces of cylindrical shape, they occur horizontally, and are randomly orientated and randomly distributed. In the case of cut-to-length (CTL) logging operation, forest residues represent separate clusters, consisting of pieces of branches, twigs, tips, etc. So the application of the conventional LIS theory for quantifying forest residues after CTL logging is difficult. The purpose of the article was to assess the accuracy of the modified LIS method for quantifying forest residues after CTL logging. The studies were conducted by computer simulations. In the models, the forest residues are represented as clusters in the form of circles. The laws of distribution of the radius of the clusters and their position in the plot were determined by field measurements. In the simulations, 4 types of clusters were considered:
Þ type 1 – clusters uniformly distributed within the entire cutting area (Fig. 7)
Þ type 2 – clusters uniformly distributed along the X-axis and five stripes on the Y-axis (Fig. 8)
Þ type 3 – clusters uniformly distributed along the X-axis and three stripes on the Y-axis (Fig. 9)
Þ type 4 – clusters uniformly distributed along the X-axis and one stripes on the Y-axis (Fig. 10)
It was determined through simulation that the formula of the modified LIS method estimatedappropriately forest residues after CTL logging. According to the results of simulation experiments,it was found that when the location of the lines of sample are across the area of Fig.7, 8 (across the stripes with clusters), the results are in good agreement with the theoreticalformulas. Differences are within error of 20%
Endoscopic Drainage of the Pancreatic Pseudocyst through the Stomach or Duodenal Wall
In the article we have presented early outcome and long-term outcome of the usage of various methods of endoscopic drainage of the pancreatic pseudocyst through the stomach or duodenal wall in 56 patient
Simulation Studies on Line Intersect Sampling of Residues Left After Cut-to-Length Logging
Upon carrying out logging, residues remain in the cutting area. Logging residues are an additional source of wood raw material for the production of fuel chips to be used in bioenergetics. In order to plan the logging residues collection and processing technology, it is necessary to gather information on the amount of this type of waste and its distribution within the cutting area. The article deals with the line intersect (LIS) method. The aim of this article was to assess the accuracy of the LIS method for quantifying logging residues after cut-to-length logging (CTL), uniformly distributed within the technology traffic lanes (strips) of width b on the cutting area of arbitrary shape S. The studies were conducted using computer simulations. In the models, logging residues are represented as clusters in the form of circles. The laws of distribution of the radius of the clusters and their position in the plot were determined by field measurements. In the simulations, clusters uniformly distributed along the X-axis and stripes on the Y-axis were considered. The samples of lines were the set of lines of different length and mutually perpendicular and parallel to the coordinate axes X, Y. In the simulations, four types of stripes were considered with a different angle to the Y-axis. Type 1 – angle = 0°, type 2 – angle = 15°, type 3 angle = 30°, type 4 – angle = 45°. It was determined through simulation that the estimated mean radius of the clusters is greater by 24% than the true mean radius. The LIS method formula is appropriate for estimating the amount of forest residues after CTL logging provided the true mean radius is taken. According to the results of simulation experiments, it was found that the results are in good agreement with the theoretical formulas if the location of the sample lines is mutually perpendicular and parallel to the coordinate axes X, Y of the area. Differences remain within the limits of 20% error
Endoscopic biliary stenting for post-cholecystectomy bile leaks
This paper deals analyzes the treatment experience of 15 patients with bile leakage after laparoscopic cholecystectomy. All patients have undergone endoscopic transpapillary interventions in the bile ducts, including a retrograde cholangiography, papillotomy, biliary stenting, either individually or in combination with traditional surger
Bile a-Amylase and Lipase - Possible Predictors of Acute Pancreatitis in Case of Bile Duct Stone Impacted at the Major Duodenal Papilla
The results of diagnostics and treatment of 102 patients with bile duct stone impacted at the major duodenal papilla were subject to analysis. The obtained results demonstrate that the level of bile α-amylase and lipase may serve as a predictor of acute biliary pancreatitis progressio
Diagnostics and Treatment of Acute Biliary Pancreatitis
The authors have suggested a new diagnostic algorithm to be applied in case of impacted bile duct stone of major duodenal papilla, based on prognosis of acute pancreatitis according to results of analysis of biochemical bile marker
Design of pilot training for craft occupations in the northern region
The place and role of artisan education and artisan occupations in the contemporary society are analysed in scientific article "Adaptation of european model of artisan education to conditions of north region of Russia". Accumulated in Russia in recent years, German experience of experimental personnel training for small artisan companies is analysed, as well as peculiarities of its using in north regions of the country. Given results and conclusions may influence on the development strategy of Yamalo-Nenets Autonomous Okrug system of professional education.В статье рассматриваются место и роль ремесленной деятельности и ремесленного образования в современном обществе. Анализируется немецкий опыт реализации экспериментальной подготовки кадров для малых предприятий ремесленного профиля, накопленный за последние годы в России, а также особенности его использования в северных регионах страны. Мультипликация представленной модели ремесленного образования может оказать влияние на стратегию развития системы профессионального образования Ямало-Ненецкого автономного округа
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