Integral pattern of bench stability on all adjacent rock of open-pit mine in solid rocks

The article presents the integrated image of bench stability across the entire adjacent pit area on the basis of a probabilistic method to predict the azimuthangular parameters of cracks that limit the potential prisms of the pit bench collapse that are put in the final position, as well as those planned to be set to the limiting contour in the form of a software component as the part of the specialized geoinformation GIS system "Stability

Assessment of the Size of Rocks in Benchs and Lumpiness of the Blasted Mountain Mass on Pits with Use of Gis Geomix

On the basis of natural researches in career of SC Kovdorsky MCP and computer processing of their results in GIS GEOMIX was developed the photometric method of assessment of blocks (sizes) of breeds in the slope of ledges of a pit, the existing version of this method intended for assessment of lumpiness of mountain mass is improve

Study of Molecular and Ionic Vapor Composition over CeI3 by Knudsen Effusion Mass Spectrometry

The molecular and ionic composition of vapor over cerium triiodide was studied by Knudsen effusion mass spectrometry. In the saturated vapor over CeI3 the monomer, dimer, and trimer molecules and the negative ions I−, CeI4−, and Ce2I7− were identified in the temperature range of 753–994 K. The partial pressures of CeI3, Ce2 I6, and Ce3I9 were determined and the enthalpies of sublimation, Δ

Optimization of preoperative planning and intraoperative navigation at the shoulder replacement

There were 105 patients with shoulder replacement under our supervision (terms of supervision were up to 10 years). There were 43 men and 62 women. Age of patients was from 29 to 80 years. Two ways of optimization of shoulder replacement are offered: "Method of preoperative determination of the sizes of a head of shoulder joint endoprosthesis" (Patent of the Russian Federation N 2469670 d.d. 12.20.2012) and "Method for intraoperative navigation of a shoulder stem of joint" (Patent of the Russian Federation N 2467725 d.d. 11.27.2012). We reached the improvement of quality of the operation due to the fact of an installation of the implants which are as much as possible close to the anatomy of a normal shoulder joint by size and position

Primary endo-prothesis of shoulder joint at heavy traumatic damages of proximal segment of a shoulder bone and their consequences

Under our supervision there were 123 patients with terms of supervision till 7 years, with fractures,fracture-dislocations of an area of a shoulder joint and chronic damages of this area. There were 57 men and 66 women. All the patients were from 38 to 83 years old, the average age was 55,8 years. 44 patients had various kinds of an osteosynthesis and 79 - endoprosthesis of a shoulder joint. It was proved, that in patients of the senior age group, the expressed bony rarefication, a heavy accompanying pathology of a shoulderjoint (arthrosis of 2-3 grades, defeat of a joint at a number system diseases, etc.) and also at the treatment of consequences of traumas are unconditional, the preference should be given to endoprosthesis of a humeral joint, as to more effective method of treatment

Нейровизуализационные особенности строения головного мозга у детей с детским церебральным параличом, полученные методом магнитно-резонансной трактографии

Aim. To perform quantitative evaluation of the degree of white matter tract abnormalities in children with spastic cerebral palsy by magnetic resonance tractography to determine severity of the disease, as well as to carry out a dynamic assessment of treatment effectiveness.Materials and methods. The study included 46 children (32 males, 14 females; average age 5.4 ± 1.1 years). The participants were divided into two groups. The experimental group consisted of 23 children with spastic cerebral palsy. The control group included 23 children without any neurological disorder. Examination of the brain was performed on the Siemens Essenza 1,5 Т system (Siemens, Germany) and included magnetic resonance tractography to reconstruct the major white matter tracts. The number of fibers, average fractional anisotropy value, apparent diffusion coefficient, and coefficient of myelination of major white matter tracts in the brain were calculated and analyzed.Results. We found a significant difference in the above-stated parameters between the groups. The experimental group showed a decrease in the absolute number of fibers at the central and posterior segments of the corpus callosum, corticospinal tracts, and left inferior longitudinal fasciculus. Besides, we detected a decrease in fractional anisotropy at 2–5 segments of the corpus callosum and right lateral corticospinal tract, an increase in the apparent diffusion coefficient at 2, 4, and 5 segments of the corpus callosum and left lateral corticospinal tract, and a decrease in the myelination coefficient in all the examined tracts, except for superior longitudinal fasciculus. We revealed a positive correlation between the intensity of the motor disturbance and the coefficient of myelination at the anterior corpus callosum and inferior longitudinal fasciculus.Conclusion. Magnetic resonance tractography is an informative technique for unbiased evaluation of white matter tract anatomy, as well the level and degree of motor tract damage. The most useful characteristics of white matter tract anatomy are the absolute number of fibers in the tract, fractional anisotropy, and coefficient of myelination. Some of them correlated with the intensity of motor disturbance, so they can be regarded as potential predictors of rehabilitation potential. Цель. Количественная оценка степени нарушений развития проводящих путей головного мозга у детей со спастическими формами детского церебрального паралича (ДЦП) методами магнитно-резонансной (МР) трактографии для определения тяжести заболевания, а также оценка динамики эффективности лечения.Материалы и методы. Обследованы 46 детей 4–7 лет (средний возраст (5,4 ± 1,1) лет), из них 14 девочек (33%) и 32 мальчика (66%). Пациенты разделены на две группы. Исследуемую группу составили 23 пациента со спастическими формами ДЦП. В контрольную группу вошли 23 ребенка без неврологического дефицита. Исследование головного мозга проводилось на МР-томографе Siemens Essenza 1,5 Т (Siemens, Германия) и включало метод МР-трактографии. Были рассчитаны и обработаны: количество волокон, средний показатель фракционной анизотропии, коэффициент диффузии, коэффициент миелинизации основных проводящих путей головного мозга.Результаты. Выявлена достоверная разница указанных выше показателей между пациентами исследуемой и контрольной групп. У детей с ДЦП отмечалось снижение абсолютного количества волокон в области центральных и заднего сегментов мозолистого тела, кортикоспинальных трактов и левого нижнего продольного пучка. Также определялось снижение показателя фракционной анизотропии волокон в области 2–5-го сегментов мозолистого тела, правого кортикоспинального тракта; повышение коэффициента диффузии в области 2, 4, 5-го сегментов и левого кортикоспинального тракта; снижение коэффициента миелинизации во всех исследуемых трактах, за исключением верхних продольных пучков. Выявлена положительная корреляция между  выраженностью моторного дефицита и коэффициентом миелинизации в области переднего сегмента мозолистого тела и нижних продольных пучков.Заключение. МР-трактография является информативным методом объективной оценки организации проводящих путей головного мозга, уровня и степени поражения моторных трактов. Наиболее информативными характеристиками организации проводящих путей являются абсолютное количество волокон в тракте, показатель фракционной анизотропии, а также расчетный показатель – коэффициент миелинизации. Некоторые из выявленных изменений коррелировали с выраженностью моторного дефицита, что позволяет рассматривать их как потенциальные предикторы реабилитационного прогноза

Endoprosthesis replacement at the treatment of elbow joint defects

Results of 25 total endoprosthesis operations in patients with defects of the elbow joint of various ethiology are analysed. The endoprostheses produced by Endoservis (Russia] and Coоnrad/Mоrrey Zimmer (USA] were used. The technique of operation and postoperative rehabilitation is described in the article. The estimation of results of treatment was performed by «the Estimation of surgery of an elbow» (American Shoulder and Elbow Surgeons (ASES] Assessments; Richards R.R. et al. 1994]. Radiographically the results of treatment were estimated by the method of X-ray stability of the implants by O.A. Kudinov, V.l. Nujdin. The majority of patients undergoing arthroplasty of the elbow joint for its defects were of young age (40-45 years], and that has left its mark on the technology of operation and maintenance of the patients in different periods after surgery. The analysis of results of treatmentfor 1 year until 1-15 years after the operation was carried out. Good and excellent results, were received in 68 %, satisfactory - in 30 %. The unsatisfactory result of endoprosthesis surgery took place in 8 % of operated (2 patients]. It has been established that the endoprosthesis replacement for elbow joint defects in high-tech surgery is definitely an alternative to traditional methods of treatment, and in most cases should be seen as a method of choice for treatment of this disease

Application of optical non-invasive methods to diagnose the state of the lower limb tissues in patients with diabetes mellitus

The paper shows the possibility of assessing the functional state of microcirculatory-tissue systems of patients with diabetes mellitus by laser Doppler flowmetry (LDF), diffuse reflectance spectroscopy (DRS) and fluorescence spectroscopy (FS) methods. A review of the existing non-invasive optical technologies used to assess the state of microcirculation and oxygen metabolism in tissues of patients with diabetes is conducted. A series of experimental studies involving 76 patients with diabetes and 46 healthy volunteers was carried out. A wavelet analysis of LDF-grams was used to evaluate the adaptive changes of microcirculation during the temperature tests. The obtained data revealed that the proposed methodology in the form of combined use of several diagnostic technologies (LDF, FS and DRS) allows us to detect the presence or absence of trophic disorders and to evaluate adaptation processes during thermal tests

Biophotonics methods for functional monitoring of complications of diabetes mellitus

The prevalence of diabetes complications is a significant public health problem with a considerable economic cost. Thus, the timely diagnosis of complications and prevention of their development will contribute to increasing the length and quality of patient life, and reducing the economic costs of their treatment. This article aims to review the current state-of-the-art biophotonics technologies used to identify the complications of diabetes mellitus and assess the quality of their treatment. Additionally, these technologies assess the structural and functional properties of biological tissues, and they include capillaroscopy, laser Doppler flowmetry and hyperspectral imaging, laser speckle contrast imaging, diffuse reflectance spectroscopy and imaging, fluorescence spectroscopy and imaging, optical coherence tomography, optoacoustic imaging and confocal microscopy. Recent advances in the field of optical noninvasive diagnosis suggest a wider introduction of biophotonics technologies into clinical practice and, in particular, in diabetes care units

Monte Carlo simulation of signals in digital diaphanoscopy of the maxillary sinuses

Digital diaphanoscopy method has potential to separate normal and pathological conditions of the maxillary sinuses. The entirety of all the features of the investigated area (the presence or absence of pathology, its etiology and morphological features) affects the resulting images of the maxillary sinuses by the digital diaphanoscopy. In this work, the MonteCarlo numerical simulation method was used to determine the patterns of propagation of light radiation in biological tissue. A biologically heterogeneous environment, represented by structures of the skull and maxillary sinuses, as well as pathological changes in them was modelled in the TracePro software