The article presents the analysis of effectiveness of laser vaporization for treatment of pain syndrome caused by lumbar disc herniation. We treated 149patients (average age – 40years). 62(41.7%) patients had lumbodynia, 67(45.2%) patients had lumbar ischialgia. Nerve root disorders (radiculopathy, radiculoneuritis) are found in 20(13.1%)patients. 86(57.4%) patients had median hernias of intervertebral disc (disc bulging for 0.6±0.2cm), 36(24.3%) patients had intervertebral disc protrusion and 27(18.3 %) patients had lateral intervertebral hernia (disc bulging for 0.55±0.1 5cm). Satisfactory and good results of laser vaporization are registered in 140(94%) patients with circular protrusion and median hernias with disc bulging up to 7–8mm. Also the decrease in VAS scores of pain syndrome by 2–5points in comparison with initial condition is found. Unsatisfactory results are registered in 9(6%) patients with lateral hernias of more than 5mm and with disease duration more than 6months. Prospective (from 3 to 13months) follow-up was conducted in 49patients. 5 patients from the group with lateral hernias needed open surgeries.
The issue of strength analysis as well as foreknowledge of component and structure life is of interest at this time for new composite materials. New composite materials and alloys elastic response is often unknown, and standard methods for their determining can not be applied to, e.g. materials featuring surface gradient properties. Elasticity modulus method of examination is based on stepwise removal of part of the material from the rod sample surface or application of a coating onto the sample surface. Each step is accompanied by measurement of the sample lateral dimensions, and density. To determine Young´s modulus, resonance frequencies of the sample subjected to forced longitudinal vibrations are measured using an ultrasonic device. The device principle of operation is based on excitation and tracking of the sample forced mechanical oscillations close to its own frequencies, measurement of resonance peak parameters followed by calculations of the Young´s modulus. To induce and track the forced oscillations in the sample, use is made of piezoelectric transducers attached to damped acoustic transmission rods, while the sample is fixed between pointed rod ends. This arrangement makes it possible to examine also Young´s modulus temperature dependences. Young´s modulus measurement results for case-hardened hard alloy are provided. It is shown that Young´s modulus of surface layers is lower than that of the base material, which is explained by formation of new compounds in the surface layers owing to chemical and diffusion reactions between an alloying element and alloy components. The doped layer extends to 0.45 mm. The results obtained can be used for strength calculations of case-hardened materials, estimation of cohesive and adhesive strength of individual layers of coatings, structure and other physical and mechanical properties of materials.
In estimating the safety of underground pipeline operated in complicated engineering and geological conditions, it is necessary to know and consider the main regularities caused by pipeline interaction with soil. Presented in this article mathematical model of pipeline spatial bend under the action of group of loadings and influences allows estimate influence of complicated geological conditions and design features on pipeline’s stressed-deformed state and reliability.Keywords: acceptable risk, admissible risk, practical expediency principle.
Менеджмент. Экономика. Организация --------------------------------------------------------------------В статье рассмотрены различные аспекты кризисной ситуации в России. Указано, что в России наблюдается управленческий, финансовый, экономический кризис, углубляемый агрессивной политикой США и её сателлитов, оче-видным становится новый очередной этап геополитического передела мира. Приводятся основные причины, привед-шие к сегодняшнему состоянию отечественной экономики. К улучшению создавшегося положения наиболее важным аспектом является инновационная политика Правительства, а также менеджмент знаний, в котором особое место зани-мают информационные ресурсы и образование трудовых ресурсов. Установлено, что новые идеи, которые разрабаты-ваются высококвалифицированными кадрами, обладающими глубокими знаниями, в современных условиях становят-ся источником экономического развития региона. Доказана необходимость интеграции образовательных организаций с научными учреждениями на базе производственного комплекса и предпринимательских структур в виде схемы «об-разование -наука -кадры -инвестиции -фирма -регион -бизнес», представляющей комплекс взаимосвязанных и взаимообуславливающих процессов, которые образуют общий инновационный потенциал любой экономической сис-темы. В Российской экономике, которая основана на знаниях, структура занятых изменяется, всё больший удельный вес приходится на работников интеллектуального труда в структуре работающего населения, увеличивается доля ра-ботников с высшим образованием, что представляет собой закономерный результат развития производительных сил в ходе научно-технического прогресса. Одним из современных требований к работнику является его способность к обу-чению и переквалификации. Особая роль в формировании высокопрофессиональных кадров для Российской экономи-ки отведена информационным ресурсам, ценность значительно увеличивается, они легко тиражируются, обладают по-вышающейся предельной полезностью, им присущи положительные внешние эффекты и дискриминационные цены.Ключевые слова: кризис, геополитика, новые технологии, знания, образование, информационные ре-сурсы, интеллектуальный труд. ECONOMICS AND MANAGEMENT OF KNOWLEDGE AS A DEFINING COMPONENT OF IMPROVING THE ECONOMIC CONDITION OF RUSSIA DSc in Economics, Professor V. G. Larionov Federal State Budget Education Institution of Higher Education «Bauman Moscow State Technical University»,Moscow, Russian Federation Abstract The article discusses various aspects of the crisis in Russia. It is specified that in Russia there is management, financial and economic crisis, deepened by aggressive policies of the USA and its satellites, the obvious one is the next stage of new geopolitical repartition of the world. The main reasons that led to the current state of the domestic economy are given. To improve the situation the most important aspect is innovative government policy, and knowledge management, in which special place is occupied by information resources and education of labor resources. It is determined that the new ideas that are...
The purpose of the study is the problem of treatment of patients of elderly and senile with valgus deformity of the 1st toe. Still unresolved issues are: which of low-impact operations in the area of the 1st metatarsal bone and main phalanx 1 finger is more effective. Today the influence of operations sparing resection of the head of the 1st metatarsal on the function of the foot insufficiently studied. The need to develop a new operation with a comprehensive assessment of its results in elderly patients is the basis for this study. Materials and Methods: the study is based on the clinic analysis and the results of surgical treatment of hallux valgus toe 1 in 72 patients of both sexes. Sparing resection of the metatarsal head 1 was performed in all patients. Results: after sparing resection metatarsal head 1 there was a decrease in the number of cases overload medial edge of the foot, a decrease of the transversal size of the foot and an increase of longitudinal size of the foot. Conclusion: examination of the results of operations on the head of the 1st metatarsal has allowed to establish that the function of the foot has undergone some positive changes. In patients deformation disappeared, gait became smooth, the load on both feet became uniform. Because of this, patients were able to use the normal shoes, their household activity increased.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.