Infiltrative pulmonary tuberculosis of children teenage age

In this article, the features of the course of infiltrative tuberculosis in adolescents who are inpatient in Yekaterinburg are considered. 30 case histories of children 13-16 years old are analyzed. Studied anamnesis data, medical history, physical examination, diagnosis, treatment, and outcome of the disease.В данной статье рассматриваются особенности течения инфильтративного туберкулеза у детей подросткового возраста, находящихся на стационарном лечении в г. Екатеринбурге. Проанализировано 30 историй болезни детей возраста от 13 до 16 лет. Изучены данные анамнеза заболевания, анамнеза жизни, объективного осмотра, методов диагностики, лечения и исхода заболевания

Primary prevention of the main dental diseases in children at different stages of orthodontic treatment with bracket systems

Aim. Evaluation of the effective preventive methods of dental caries in children with dentoalveolar anomalies. Methods. Orthodontic treatment was received by 50 children aged 12-14 years with dentoalveolar anomalies who were treated by an orthodontist using ligature bracket and who had a compensated form of dental caries before the beginning of the hardware treatment. In the first group of children (control, 25 subjects) professional oral hygiene twice a year was followed by the coating of all teeth with fluoride. Children of the second group (25 subjects) after professional oral hygiene twice a year had their teeth covered with tooth enamel around brackets with Clinpro XT Varnish (3M ESPE) material containing fluorine, calcium and phosphate compounds. Dental examination every three months included assessment of oral hygiene and the state of the gums, the presence of carious defects, fillings and removed teeth, followed by the calculation of the main dental indices. Results. On the basis of studies of the dental status in children undergoing orthodontic treatment using brackets, the main dental indices such as DCF (decay/missing/filled), complex periodontal index, papillary-marginal-alveolar index were characterized at the stages of treatment. The analysis of the recorded values was performed in the comparison groups for each research method and the main statistically significant differences were identified. The study revealed that children from group 2 had positive dynamics of the state of periodontium within 18 months: the value of papillary-marginal-alveolar index among children from group 2 decreased by 5.4 times, the value of complex periodontal index decreased by 3.5 times. Children from group 2 had a significantly lower incidence of caries compared to the control group after 18 months of remineralizing therapy: the increase of complex periodontal index among children receiving orthodontic treatment with Clinpro XT Varnish coverage twice a year was only 1.42±0.16, incidence of caries of teeth surface reduced by 55%. Conclusion. On the basis of these studies, a comparative characteristics of the dental indices was performed at the stages of treatment using the brackets, depending on the used primary preventive measures; dental status of children at the stages of orthodontic treatment have their features: special oral hygiene tools should be guided by hygiene indices and complemented by remineralizing drugs

Endolithic and hypolithic soil-like systems: structure and composition from the macroto submicro-levels

The paper presents a detailed study on structure and composition of endolithic and hypolithic systems. The following issues are discussed: morphology at macro to submicro levels, biochemical weathering, formation of carbonates and oxalates in situ, migration of Fe compounds, and spatial patterns of endolithic systems. Endolithic and hypolithic systems have major features attributed to soils: (a) rock layer exposed to external abiogenic factors, (b) lithomatrix inhabited by living organisms which are synthesizing and decomposing organic matter, (c) as a result initial parent rock (lithomatrix) is transformed in situ by biogenic and abiogenic factors, the products of transformation are retained and/or removed, the vertical heterogenity is established in a form of microhorizons composing microprofile. Examined profiles of endolithic systems in granitoids of East Antarctica with high quartz content had clear eluvial-illuvial differentiation patterns. Similar patterns have been discovered in different landscapes from the Plateau Ozark in Missouri to the Table Mountain in South Africa

Continuous selections of multivalued mappings

This survey covers in our opinion the most important results in the theory of continuous selections of multivalued mappings (approximately) from 2002 through 2012. It extends and continues our previous such survey which appeared in Recent Progress in General Topology, II, which was published in 2002. In comparison, our present survey considers more restricted and specific areas of mathematics. Note that we do not consider the theory of selectors (i.e. continuous choices of elements from subsets of topological spaces) since this topics is covered by another survey in this volume

Vibrational spectra and conformations of bis(N-ethyl)nitramine molecule

The Raman (50-3200 cm-1) and infrared (50-3200 cm-1) spectra of bis(N-ethyl)nitramine, (CH3CH2)2NNO2, in the liquid and crystal states have been recorded. Optimized geometries and conformational stabilities have been obtained from ab initio calculations utilizing the RHF/6-31G** level. This compound was shown to have two stable conformations with a planar nitramine fragment and the CH3 groups orthogonal to it and located either on the same or on the different sides of it. The computed energy difference between two conformers is 0.57 kcal/mol. (CH3CH2)2NNO2 exists as a mixture of the two conformations in the liquid state, while only the most stable one, with the CH3 groups located on the different sides of the nitramine fragment, remains in crystal state. The vibrational frequencies have been calculated using ab initio scaled force fields, and the vibrational spectra have been interpreted in detail

Concept of use of comprehensive fertilizers of long-term action on the basis of waste processing of potassium-magnesium ore as a new paradigm in improving soil fertility

Technology for the production and use of new multiple slow-release fertilizers from clay-salt waste (sludge) remaining as a result of potassium fertilizers production from natural K-Mg ores, is elaborated in Perm Federal Research Center. The main processes in the technology are waste enrichment and subsequent high-temperature calcination of the enriched concentrate. As a result, the product, received the name the calcine of clay-salt sludge, was formed having the properties of multiple slow-release fertilizer and ameliorant. Laboratory and field experiments on the calcine use as a potassium fertilizer were fulfilled. The studied crops were spring wheat, barley, and potato. The experimental scheme included such treatments: control (without fertilizers), NP – background; NP + KCl and NP + calcine. The use of calcine for grain crops (wheat, barley) on the NP background promoted the yield gains by 1.7–1.9 t/ha compared with the control, the use of standard NPK fertilizers – by 1.8–2.0 t/ha, the difference was within the error of the experiment (HCP05 = 0.21; 0.38 t/ha). The content of nitrogen, phosphorus and potassium in the grain and straw of both crops in the treatments using calcine was approximately equal to the variants using standard fertilizer and significantly higher compared to the control. Differences between calcine treatments were not significant. The application of N90P90 and full mineral fertilizer (N90P90K90) contributed to the yield increase of potato tubers by 1.43–4.51 t/ha respectively. The use of unconventional potassium fertilizer – calcine on the background of NP was not inferior in efficiency to the use of traditional fertilizer – potassium chloride. The quality parameters of the potato crop (dry matter and starch content in tubers, the content of heavy metals) were also not inferior compared to the use of traditional potassium fertilizer. The use of calcine for potato and cereals in rates equal to K60-120 did not lead to deterioration of the fertility indicators of sod-podzolic soil. Upon receipt of the cinder, one can use the additional unlimited set of components. In other words, this is a conceptual model for creating new types of mineral fertilizers with desired properties for different soil and climatic conditions and crops with different requirements for mineral nutrition

Промышленный унифицированный рекуператор на базе модульных элементов «Силал» М-I 115x460x860-05 и «Силал» М-II 230x460x860-1,0 (типоряд М-I и М-II)

The paper proposes a fundamentally new modification of cast iron recuperative heat exchanger assembled on the basis of the following modules: «Silal» M-I 115x460x860-05 and «Silal» M-II 230x460x860-1.0.It is shown that such recuperative heat exchanger does not have the disadvantages which are inherent to presently applied recuperators.Предлагается принципиально новая модификация чугунного рекуператора, собранного из модулей («Силал» М-I 115x460x860-05 и «Силал» М-II 230x460x860-1,0).Показано, что такой рекуператор лишен недостатков, которые присущи используемым в настоящее время

ГИДРОДИНАМИЧЕСКОЕ СОПРОТИВЛЕНИЕ УНИФИЦИРОВАННОГО МОДУЛЬНОГО РЕКУПЕРАТОРА НАГРЕВАТЕЛЬНЫХ И ТЕРМИЧЕСКИХ ПЕЧЕЙ ЗАГОТОВИТЕЛЬНОГО И МЕХАНОСБОРОЧНОГО КОМПЛЕКСОВ МАШИНОСТРОИТЕЛЬНЫХ И АВТОТРАКТОРНЫХ ЗАВОДОВ

Analysis of hydrodynamic resistance of gas and air paths of a recuperator assembled with the help of unified module elements M-I and M-II has been carried out. The paper shows the possibility to change path resistance within a wide range of values. Выполнен анализ гидродинамического сопротивления газового и воздушного трактов рекуператора, собранного из унифицированных модульных элементов М-I и М-II. Показана возможность изменения сопротивления трактов в широком диапазоне значений

К расчету унифицированного модульного рекуператора (модули М-I и М-II) для нагревательных и термических печей заготовительного и механосборочного производств машиностроительных и автотракторных заводов Республики Беларусь

The paper shows an influence of outside ribbing of heat-exchange surface of unified modules M-I and M-II on heat transfer factor of the proposed recuperator and its hydro-dynamic resistance.Показано влияние наружного оребрения поверхности теплообмена унифицированных модулей М-I и М-II на коэффициент теплопередачи предлагаемого рекуператора и его гидродинамическое сопротивление