Investigation of the Ni3Al-Fe alloys by resistivity measurements and differential thermal analysis

A series of iron-doped Ni3Al ternary alloys is investigated by resistivity measurements and differential thermal analysis. Temperatures of phase transformations and disordering onset are determined. A hysteresis phenomenon is observed in the liquid state in polytherms of resistivity upon heating the alloy under study to the critical temperature. © 2013 Allerton Press, Inc

Reducing digger energy consumption by improving the walking mechanism

To evaluate the energy to move the excavator body, we calculated the effort involved in the hydraulic cylinders of the walking mechanism. Unlike man, "pacing" the excavator is on a "drawing", in which the housing pulls the excavator walking mechanism in the direction of the reference points. As a result, the kinematic and dynamic study of the process of pacing is reduced to the analysis of speeds and loads for the simplest of mechanisms, known since ancient times as the slider-crank mechanism. Analysis of the motion of this mechanism can be carried out by conventional (calculated for one position) or by modern analytical methods. Modern methods of analytical studies of the mechanisms permit a computer calculation of the full cycle of movement of the excavator in a single step and to evaluate the stresses produced in the hydraulic cylinders. A variety of design solutions based on different positions of the connecting joints is recorded during the test set kinematics and, accordingly, an amount in the results is obtained. Power movement by one step excavator is theoretically estimated as the amount of work the forces acting on the mechanism during this step undertake. A design that corresponds to the minimum energy consumption should be considered optimal for this type of walking mechanism. The authors of this paper analyzed the performing over thirty different types of mechanisms of pacing. Recommendations for optimizing their designs are formulated for each of these, which not only reduces the power consumption excavator, but also reduces its price. © 2014 WIT Press

Самозакипаючі потоки в дренажних каналах теплотехнологічних систем

В монографії здійснено аналіз особливостей самозакипаючих потоків в дренажних каналах. Наведено результати фізичного та числового моделювання цих потоків в теплотехнологічних системах. Розроблено методику розрахунку теплогідродинамічних процесів в дренажних канала

Priority chemical pollutants of drinking water in the city of Kazan: Approach based on risk assessment

© Published under licence by IOP Publishing Ltd. Assessment of non-carcinogenic risks from chemical substances ingested with drinking water included peroral, skin and inhalation routes of contact with water. The study was carried out for children aged 3-6 years living in 4 districts (zones) of the city of Kazan. Regional exposure factors (REF) at the median (Me) and the 95-th Percentile (95P) levels were identified according to the results of the questionnaire survey. The value of total hazard indices (THI) calculated with application of REF at the median (Me) and the 95-th Percentile (95P) levels made THIMe = 14.2 and 17.1, and THI 95perc = 13.03 and 16.3 in zones with a combined type of water supply. The ingestion of chemical substances with drinking water in different zones of the city of Kazan implies, alert and high levels of non-carcinogenic health risk for the child population

Rational use of forest as a renewable natural resource

This article is devoted to the formation of a mechanism for the rational use of forests as a renewable natural resource, including transfer of forest areas in rent taking into account market indicators, advantages and disadvantages in the process of timber sales. The total income received in the form of fees for the use of forest fund and for the use of forests in 2016 in the Russian Federation is amounted to 24.4 billion rubles, which is 0.9 billion rubles (by 3.8%) more compared with the previous year. According to the state report of the Ministry of Natural Resources and Ecology, in the reporting 2016 year this payment was received in the amount of 27.8 billion rubles, which is 3.4 billion rubles (almost 14%) more than in 2015. Thus, due to the fact that Russia's natural forest resources constitute powerful strategic competitive advantage in the world economic system, the article, on the basis of the system approach, reveals correlation between the level of rent payments and profitability from the sale of round wood, taking into account harvested and considered assortments, which allows forming forest payments on the basis of domestic and export market prices and as a result increasing financial contribution from the use of forests to the national budget.peer-reviewe

PERITONEAL DIALYSIS IN UKRAINE: 2009–2013

We analyzed the information of the state ofperitoneal dialysis in Ukraine for the period 2009–2013. The authors are grateful to all the main coordinators of the regional registries who had sent the relevant information to the SI «Institute of Nephrology NAMS of Ukraine», and contributed to the formation of the National Register

Some Remarks on Combining Forms in English-Japanese Dictionaries

© 2016, Pleiades Publishing, Inc.Previously unknown isononylcalix[8]arene was synthesized from commercially available isononylphenol. The properties of the product (solubility, extraction ability, tendency to aggregation) were compared with those of the known tert-butylcalix[8]arene. The extraction of 137Cs, 99mTc, and 241Am from alkaline carbonate solutions with solutions of p-alkylcalix[8]arenes (alkyl = tert-butyl, isononyl) in tetrachloroethylene was studied. The dependence of the distribution ratios on pH of the aqueous phase in the interval from 11 to 13.9 and on the nature of functional groups in the calixarene core was determined. The composition of extractable solvates of cesium and americium with calix[8]arenes was found. Calix[8]arenes extract cesium from alkaline solutions more efficiently than p-tert-butylphenol, their nonmacrocyclic analog, does. tert-Butylcalix[8]arene exhibits the highest performance, which may be due to formation of aggregates 5.7 ± 0.8 nm in diameter in the organic phase at pH 13.5 of the aqueous phase. The isononyl derivative exists in the monomeric form (particle diameter 1.9 ± 0.5 nm)

Clinical case of chemoresistant tuberculosis in the patient with tuberous sclerosis: difficulties of diagnosis, features of the course and treatment.

In the practical activities of a modern doctor, significant difficulties are noted in the diagnostics and proper management of patients with hereditary diseases due to the limited coverage of the population by genetic researches. For a long time, the patients with a variety of complaints are observed by doctors of various specialties, and the therapy often has little effect due to a lack of understanding of the true causes of pathological changes. The situation is complicated by case of a combined course of a hereditarily caused disease and some other disease of an infectious, non-infectious or tumor nature. The aim of the research was to study the characteristics of clinical manifestations, course of tuberculosis with resistance to anti-TB drugs in a patient with a rare hereditary disease from the group of phacomotoses - Bourneville-Pringle disease or tuberous sclerosis. This disease has a wide range of clinical manifestations, accompanied with the development of benign neoplasms in various organs and systems, damages to the skin, brain, organs of vision, lungs, kidneys, heart, as well as the musculoskeletal and endocrine system. It leads to development of various infectious and non-infectious pathologies in these organs. The article covers a 4-year period of observation of a young patient with late diagnosed tuberous sclerosis, suffering from pulmonary tuberculosis and tuberculosis of urinary system, includes the initial diagnosis of a specific disease, the course, the dynamics against received treatment and the development of relapse with the formation of resistance to anti-TB drugs. The difficulties in the management of tuberculosis in this patient were in the detection of numerous neoplasms and changes in the internal organs, in particular in the kidneys and lungs, which characterized tuberous sclerosis, on the one hand this contributed to untimely diagnosis of tuberculosis, and on the other hand – worsening the course and the progression of a specific process, as well as an unfavourable prognosis for recovery

Assessment and zoning of the urban area according to the level of heavy metal pollution

Urban area ranking according to the level of heavy metal pollution with identification of four areas in the territory of the city of Kazan was carried out: the 1st - Derbyshki; the 2 nd - Teplocontrol; the 3 rd - Gorki; the 4th - the Kirovsky district. Pollution of snow cover in the city territory was determined by pollution coefficients calculated with application of Maximum Permissible Concentration (MPC) of chemical substances in ambient waters for household and amenity water use. The entire territory of the city of Kazan is mildly polluted by Mn, as far as other metals (Cd, Pb, Cu, Zn, Co, Ni, Cr) are concerned, the soil pollution category varies with areas. Metal content in the hair of the children living in these areas is an informative additional method to assess the present ecological situation in certain territories