The web-based information system for small and medium enterprises of Tomsk region

This paper presents the web enabled automated information data support system of small and medium-sized enterprises of Tomsk region. We define the purpose and application field of the system. In addition, we build a generic architecture and find system functions

Hydrometallurgical processing of gold-containing ore and its washed products

This article presents the results of hydrometallurgical studies of gold-bearing ore. The experiments were carried out on 2 parallel weighed portions with the analysis of products by assay (cake) and atomic absorption (solution) analyzes of gold. To determine the technological properties, tests were carried out on the direct and sorption cyanidation of ore samples using different material sizes, the concentration of the complexing agent in the solution and the preliminary treatment of the pulp with lime. The study of the sorption activity of the ore, as well as the dynamics of gold dissolution was carried out

Features of Surgical Correction of Spontaneous Luxation of the Complex “IOL Posterior Chamber – Capsular Bag”

Luxation of intraocular lens in capsular bag several years after cataract surgery leads to a decrease in visual function and requires surgical treatment.Aim: to determine effectiveness of various types of surgical treatment of late spontaneous dislocations of IOL in capsular bag.Methods. Analysis of 123 case histories of patients with late IOL dislocation, operated in 2013–2015, was made. First group included patients with replaced IOLs dislocated into pupillary lens. Second group consisted of patients who underwent reposition and suture of IOL to iris. Examination was made before operation and 6–12 months after operation. Results. The average term from moment of IOL implantation to its luxation was 8.78 ± 4.85 years. II degree of dislocation was detected in 74 % of patients, III degree of dislocation – in 10 %, and IV degree – in 16 % of patients.Uncorrected visual acuity was reduced to 0.15 ± 0.16; best corrected visual acuity to 0.31 ± 0.26. In 83.7 % of patients a pseudoexfoliation syndrome was detected. In 62.6 % of patients IOL luxation was accompanied byhydrodynamic disturbances. Best corrected visual acuity in period from 6 to 12 months after surgery was 0.40 ± 0.24, and after IOL reposition – 0.49 ± 0.22. In addition, after IOL replacement a significant increase in postoperative astigmatism was noted from –0.44 ± 0.84 to –1.96 ± 1.60 D (p < 0.001).Conclusion. As a result of surgical treatment of late spontaneous IOL dislocations in both groups increase in distance uncorrected and best corrected visual acuity was noted. Insufficient visual functions after surgical treatment were caused by concomitant pathology as well as increased postoperative astigmatism

Efikasnost proizvodnje mesa zeca uz pomoć savremene tehnologije na privatnoj farmi

It is proposed to grow rabbits in the modern production technology with the use of the developed technology of using recycled materials in the construction of cages for keeping rabbits. It is also proposed to use interbreed crossing of New Zealand White breed and Flanders, and also breeds Californian and Flanders breed.Predlaže se uzgoj zečeva u savremenoj proizvodnoj tehnologiji uz korišćenje razvijene tehnologije upotrebe recikliranih materijala u izgradnji kaveza za držanje zečeva. Takođe se predlaže korišćenje meleza novozelandske bele rase i flandrijske rase zečeva, kao i meleza kalifornijske i flandrijske rasa

Evolution of in vitro digestibility techniques: a systematic review

The inability to reproduce certain digestive processes in vivo, high research costs and ethical aspects have led to the development of a large number of in vitro digestion models. These models allow us to take into account various factors of modeling complex multistage physiological processes occurring in the gastrointestinal tract, which makes them promising and widely used. A significant part of in vitro methods includes assessment by enzymatic digestion and are based on the calculation of nitrogen remaining after digestion in relation to the initial total nitrogen (according to the Dumas, Kjeldahl method, spectrophotometric or chromatographic method). There are also a number of titrometric methods (pH‑stat), which are mainly used to assess the digestibility of feed, most successfully for aquatic animals due to the simplicity of their digestive tract. Methods for assessing the digestibility of food products by enzymatic digestion have undergone various stages of evolution (since 1947) and have been widely modified by including various enzymes (pepsin, trypsin, pancreatin, erepsin, etc.) in model systems, indices for various products have been determined on their basis (pepsin-digest-residue (PDR) index, 1956; pepsin pancreatin digest (PPD) index, 1964; pepsin digest dialysate (PDD), 1989). As a result, a single protocol was formed to study the digestibility of food — INFOGEST (2014–2019), which includes three stages of digestion (oral, gastric and intestinal). It allows researchers to accurately reproduce the conditions of the human gastrointestinal tract and is widely used by scientists around the world

Взаимная индуктивность двух прямоугольных компланарных контуров с симметричным внутренним расположением

The expediency of developing expressions for mutual inductance of rectangular and square coplanar contours is caused by configuration of frame antennas typical for RFID-technologies. Expressions presented in this article are aimed at simplifying calculation of induction coefficients when designing loop antennas. Expressions for mutual inductance of rectangular coplanar contours with symmetrical internal arrangement are obtained on the basis of the method of sections. It is shown that under certain conditions the expressions obtained can be reduced to intrinsic inductances of the square and rectangular frames encountered in antenna configurations. The analysis allows to estimate regions of resonance frequencies of frame receiving antennas. Simultaneously, a comparative analysis of a number of expressions for the intrinsic inductance of rectangular and square frames is performed, and attention is drawn to the difference in estimates. Recommendations for clarifying square contour external inductance are provided.Целесообразность вывода выражений для взаимной индуктивности прямоугольных и квадратных компланарных контуров обусловлена конфигурацией рамочных антенн, характерных для RFID-технологии. Представленные в данной статье выражения направлены на упрощение расчета коэффициентов индукции при проектировании рамочных антенн. Получены выражения для взаимной индуктивности прямоугольных компланарных контуров с симметричным внутренним расположением на основе метода участков. Показано, что полученные выражения при определенных условиях могут быть сведены к собственным индуктивностям квадратных и прямоугольных рамок, встречающихся в конфигурациях антенн. Предпринятый анализ позволяет оценивать области резонансных частот рамочных приемных антенн. Одновременно произведен сопоставительный анализ ряда выражений для собственной индуктивности прямоугольных и квадратных рамок и обращено внимание на различие в оценках. Даны рекомендации по уточнению внешней индуктивности квадратного контура