Research, development and application of the innovational technology of high quality pump-compressor pipes production from sections

The innovational technology of high-strength, cold- and corrosion-resistant pump-compressor pipes from sections was developed. It includes the reduction process inside three-high stand of screw rolling before piercing in the «80» pipe-rolling mill line in OAO SinTZ. The special attention is paid to the questions of fine-grained steel production and final tubes quality. It is shown that new technology is efficient from the point of tube production of high level mechanical properties

Modeling of "groove" rolling defect on internal surface of pipes at lengthwise rolling

The research has been conducted in pipe forming at rolling off by lengthwise rolling mill with stub mandrel; the patterns of change in dimensionless parameters were determined, which characterize deformation in side angle depending on http://www.multitran.ru/c/m.exe?t=424995_2_1elongation ratio. The model of formation of lengthwise groove on internal surface of pipes has been proposed

Effect of Nanocrystalline Diamond Films Deflection on Wear Observed in Reciprocating Sliding Tests

The present study deals with the tribological behavior of nanocrystalline diamond (NCD) films. The diamond films were deposited by microwave plasma enhanced chemical vapor deposition (MPCVD) in methane/hydrogen/air plasma on the Si(100) substrates. The tribological properties were studied by reciprocal sliding tests against Si3N4 balls. The depth profiles and surface morphology of the wear scars were investigated by means of mechanical profilometry and scanning electron microscopy (SEM). Various adaptation processes occur between contacting surfaces including asperity polishing, formation of carbonaceous tribolayer and ripple patterns on the wear scar surfaces. The film deflection is the specific form of adaptation decreasing contact pressure and, therefore, the damage (including wear) of both counter bodies. The deflection of NCD films in sliding tests can be related with the effect of fatigue

Distortion of the depression on the rear of the blank in broaching

When using continuous-cast billet in pipe rolling, it is expedient to roll the billet prior to broaching, so as to improve the structure and properties of the steel. To that end, a three-high screw-rolling mill for billet reduction has been installed at the TPA-80 pipe-rolling unit at OAO Sinarskii Trubnyi Zavod. Introduction of the new process was associated with increase in the rejection rate on account of indentations in the pipe. These indentations may be attributed to the depression formed at the rear of the billet in reduction and the subsequent formation of metallic semicircles on broaching; the semicircles break away and enter the deformation zone. The sources of the indentations on the rolled pipe are investigated. The broaching of the billet on a screw rolling mill is mathematically simulated. Recommendations are made with a view to reducing the surface defects on pipe produced by the TPA-80 unit with a reduction mill. © 2013 Allerton Press, Inc

ШЛЯХИ ПІДВИЩЕННЯ ЕКОЛОГІЧНОЇ БЕЗПЕКИ В АВТОМОБІЛЬНІЙ ГАЛУЗІ

In article various kinds of fuel for motor transport are considered and their comparative analysis on ecological compatibility is carried out.В статті розглядаються різни види палива для автомобільного транспорту проводиться їх порівняльний аналіз щодо екологічності

Geophysical prediction of natural protection of shallow deposits of natural bitumen and heavy oil

The Electrical Resistance Tomography (ERT) methodology was tested during the environmental studies at the shallow oil deposit. The obtained electrical prospecting results enable the groundwater vulnerability and protectability assessment which is the basis of future oil field infrastructure development

Clinical and microbiological study of the effectiveness of treatment of alveolitis of the tooth socket using a low-wave laser and a medicament based on gramicidin С

The authors obtained and analyzed the results of treatment of alveolitis with the use of light emitting diode radiation and a medical based on ’Gramicidin C' and the classical method of treatment of alveolitis by studying the microbiocinosis of the tooth socket before and after treatment and evaluation of pain in the dynamics using a visual-analog scale. The study included 70 people. Between the ages of 22 and 82. Depending on the method of treatment, the patients were divided into two groups. The main group consisted of 35 people, the treatment was carried out by the author's method (patent RU 2678199 C1). Treatment of patients of the comparison group (35 people) included abundant irrigation of the well of the previously removed tooth with an antiseptic solution -chlorhexidine 0.05%, followed by filling with iodoform gauze. The analysis of the data of microbiological study of the visual analog scale in the dynamics allows us to conclude that the use of a medical based on the antibiotic Gramicidin С has a significant antimicrobial activity on the pathogenic microflora of the tooth socket and is an alternative method for the treatment of alveolitis of the jaws. It is necessary to emphasize the advantages of complex application of light emitting diode radiation with red light with a wavelength ot 630 nm and the medical based on the antibiotic Gramicidin С for the treatment of alveolitis: as a result of the treatment in patients there is a relief of pain in the first two days of treatment due to the local action of HPA, as well as the cumulative analgesic effect of light emitting diode radiation.Цель исследования - оценить эффективность лечения альвеолита по авторской методике с помощью низковолнового лазера и лекарственного средства на основе антибиотика Грамицидина С. Авторами получены и проанализированы результаты лечения альвеолита с применением низковолнового лазерного излучения и лекарственного препарата на основе «Грамицидина С» и классической методики лечения альвеолита путем исследование микробиоциноза лунки зуба до и после лечения и оценки болевого синдрома в динамике при помощи визуально-аналоговой шкалы. В исследование вошли 70 человек. В возрасте от 22 до 82 лет. В зависимости от способа лечения больные были разделены на две группы. Основную группу составили 35 человек, лечение проводилось по авторской методике (патент RU 2678199 С1). Лечение пациентов группы сравнения (35 человек) включало обильное орошение лунки ранее удаленного зуба раствором антисептика - хлоргексидин 0,05%, с последующим заполнением йодоформной турундой. Анализ данных микробиологического исследования и визуально-аналоговой шкалы в динамике позволяет сделать вывод, что применение лекарственного средства на основе антибиотика Грамицидина С обладает значительной антимикробной активностью на патогенную микрофлору лунки зуба и является альтернативной методикой при лечении альвеолита челюстей. Необходимо особо отметить преимущества комплексного применения светодиодного излучения красным светом с длиной волны 630 нм и препарата на основе антибиотика Грамицидин С для лечения альвеолита: в результате проведенного лечения у пациентов происходит купирование болевого синдрома в первые двое суток лечения за счет местного действия ГПА, а также накопительного анальгезирующего действия низковолнового лазера

SYNOVIAL CYST IN THE PROJECTION OF TIBIAL TUNNEL AFTER ACL RECONSTRUCTION (CASE REPORT)

ACL  tears  are the  most  widespread  lesions  among  isolated  trauma  of knee  ligaments  that  require  early  surgical treatment especially in young active patients. There  are various ACL reconstruction techniques where femur and tibia tunnels are formed and graft is fixed by cannulated interference screws. One of the possible complications is the formation of a postoperative soft tissue cyst in the projection of tibial tunnel.  The nature  as well as mechanism of cyst formation  is still unclear.A relevant  clinical case of cyst formation  in a patient five years after ACL grating  is described  in this publication. MRI findings demonstrated that  the origin of the cyst was hole of the tibial interference screw.Conclusion. The authors  observed that  synovial cyst was formed due to use of cannulated interference screws where synovial  fluid was leaking  from joint  cavity  through screw holes. Cystectomy and  autografting of tibial  bone tunnel allowed to reduce such complication

Exploration geophysics methods assist in hydrogeological and ecological survey of oilfield regions

The paper describes the procedure of hydrogeological and ecological survey In the regions adjacent to oilfield facilities. Results of Integrated geophysical survey, including high-precision gravity measurement, electrical prospecting methods. In that number, symmetrical electrical profiling, vertical electric sounding, and spontaneous potentials, were used to decide on the site and type of specialized hydrogeological and ecological works. The first priorities are the zones with Intense tectonic fracturing determined first by space geological Investigations and confirmed later by gravity measurement

Методический подход к оценке цитируемости научных статей российских журналов в разрезе областей науки по данным Web of Science Core Collection. Часть 1

The authors develop and substantiate the methods of assessing Russian science journals citation in six domains as specified by the Organization for Economic Cooperation and Development (OECD) and, based on Web of Science Core Collection data, make recommendations for promoting Russian journals to the international databases. The authors analyze the methods of citing science journals indexed by the international systems and conclude that there was a need for additional indicators of citation assessment with consideration to the national origins of publications. They suggest the methodological approach based on calculating citation coefficient which is a modified version of impact factor. The key distinctions of the method are the following: the number of citing documents are applied instead of the quotation number; only one document type, i.e. academic papers, is used for calculations; citation widows are varied depending on specificity of six OECD science domains. To distribute articles among the domains the authors developed the OECD – Web of Science Core Collection compliance tables.Исследование направлено на разработку и обоснование методического подхода к оценке цитируемости научных статей российских журналов в разрезе шести областей науки Организации экономического сотрудничества и развития (ОЭСР) и поиск рекомендаций для продвижения российских журналов в международные БД на основе данных Web of Science Core Collection. Авторы проанализировали методологии цитирования научных статей журналов, индексируемых международными системами, и пришли к выводу о необходимости разработки дополнительных индикаторов оценки цитируемости с учётом «национальной принадлежности» издания. Предложен методический подход, основанный на расчёте коэффициента цитирования, который представляет собой модифицированную версию импакт-фактора. Основные отличия этого показателя: вместо числа ссылок на публикации используется число цитирующих документов; в расчёте используется только один тип документов – научные статьи; окна цитирования варьируют в зависимости от специфики шести областей науки ОЭСР. Для распределения научных статей в разрезе областей науки были использованы разработанные авторами таблицы соответствия научных направлений ОЭСР и научных категорий Web of Science Core Collection