Качество воды в водных объектах природно-исторического парка "Покровское-Стрешнево"

В статье представлен материал выполненного анализа данных показателей качества родника «Царевна-Лебедь» и реки Химки за многолетний период для выявления закономерностей в изменении содержания загрязняющих веществ в условиях трансформации антропогенной нагрузки. По результатам проведённых исследований выявлено, что по некоторым показателям качество воды не соответствует нормативам, предъявляемым к водным объектам в зоне рекреации.In an article presents the material of the аnalysis and general conclusions of indicators of the quality of the source «The Swan Princess» and the river Khimki during the year to identify patterns of change in the content of pollutants in the conditions of transformation of anthropogenic load. The results of the research revealed that some indicators the quality of water in water bodies does not match the standards for to water bodies in the recreation area

Совершенствование техники и технологии заканчивания скважин (зарубежный опыт)

Нефтяная и газовая промышленность России на современном этапе их развития сталкиваются с рядом сложных проблем, успешное решение которых возможно на пути радикальных изменений в технике, технологии и методах организации производственных операций. В условиях растущей конкуренции на мировых рынках и прогрессивного истощения ресурсной базы все более актуальными становятся вопросы использования передовых достижений мировой нефтяной и газовой промышленности в системах и методах разработки месторождений и переработки углеводородного сырья.At the present stage of its development,Russian oil and gas industry faces a number of difficult problems, the successful solution of which is possible by a radical changes in engineering, technologies and methods of organizing production operations. In today's growing competition in the World markets and the progressive deterioration of the resource base, the use of advanced achievements of the global oil and gas industry in the systems and methods of field development and hydrocarbon processing is becoming increasingly important

Diversity of cancer-related identities in long-term prostate cancer survivors after radical prostatectomy

BACKGROUND: Individuals affected by cancer need to integrate this experience into their personal biography as their life continues after primary therapy, leading to substantial changes in self-perception. This study identified factors uniquely associated with 5 different cancer-related identities in order to improve the understanding of how self-perception in men affected by prostate cancer is associated with certain clinical and psychosocial characteristics. METHODS: In this cross-sectional study, long-term prostate cancer survivors after radical prostatectomy were asked to choose one of 5 cancer-related identities that described them best. Associations with sociodemographic, clinical, and psychological variables were investigated using multivariable logistic regression. RESULTS: Three thousand three hundred forty-seven men (mean age 78.1 years) surveyed on average 15.6 years after prostatectomy were included. Most men favored the terms “someone who has had cancer” (43.9%) which was associated with a mild disease course, and “patient” (26.3%) which was associated with ongoing therapy and biochemical disease recurrence. The self-descriptions “cancer survivor” (16.8%), “cancer conqueror” (10.9%) and “victim” (2.1%) were less common. “Cancer survivor” was associated with high perceived disease severity (OR: 1.86 [1.44–2.40]). “Cancer survivor” and “cancer conqueror” were related to high benefit finding (OR: 1.89 [1.48–2.40], OR: 1.46 [1.12–1.89] respectively), and only “cancer conqueror” was associated with high well-being (OR: 1.84 [1.35–2.50]). Identification as “victim” was associated with a positive depression screening and low well-being (OR: 2.22 [1.15–4.31], OR: 0.38 [0.20–0.72] respectively) (all p < 0.05). CONCLUSIONS: Although long-term survival is common among men affected by PCa, they display a large diversity in cancer-related identities, which are associated with unique clinical and psychological characteristics. These cancer-related identities and their distinctive properties are associated with psychological well-being even after a long follow-up

Selbstuntersuchung von Hoden und Brust – eine retrospektive Kohortenstudie an Medizinstudierenden

BACKGROUND: Regular self-examination can facilitate early detection of testicular cancer and malignancies of the breast and may ensure a curative treatment. In this analysis we explored the tendencies of medical students to perform self-examination and associated factors. METHODS: As part of their urology rotation, medical students of the Technical University of Munich were surveyed via questionnaires regarding their health and sexual behavior. In all, 98.8% of the students participated and data from 473 of 477 students were included in this analysis. Data were analyzed using univariate and multivariate regression analysis. RESULTS: In all, 64.2% (n = 177) of the male students and 72.3% (n = 296) of the female students performed regular self-examination of the testis and breast, respectively. Students who did not communicate with their partners or friends about their sex lives were less likely to preform regular self-examination (p < 0.05). Male students without sexual intercourse in the 4 weeks prior to the survey and female students who did not masturbate in the 4 weeks prior to the survey were also less likely to preform regular self-examination (p < 0.05). DISCUSSION: The rate of regular self-examination is high in medical students compared to previous studies on young adults and non-medical students. This shows that knowledge about the significance of testicular cancer and breast cancer are fundamental for promoting self-examination in teenagers and young adults. A distressed sex life might hinder young adults in preforming regular self-examination. Therefore, improved education about the significance of testicular cancer and routine urological consultations for male teenagers and young men are ways to promote testicular self-examination within this age group

Исследование влияния жесткости конструкции на точность и качество деталей, полученных на установке гидроабразивной резки

Цель магистерской диссертации является исследование влияния жесткости конструкции на точность и качество деталей, полученных на установке гидроабразивной резки. В процессе исследования проводился ряд экспериментальных исследований по определению точности обработки в разных зонах резания при разных режимах, определена статистическая жёсткость системы гидроабразивной обработки. В результате исследования установлен характер погрешностей обработанных поверхностей деталей, получаемых при использовании технологии гидроабразивной резки, выявлены причины появления погрешностей обработки поверхностей деталей, оптимизированы параметры, влияющие на качество и точность обработки, получена математическая модель установки гидроабразивной обработки.The purpose of the master's thesis is to study the influence of structural rigidity on the accuracy and quality of parts obtained at the waterjet cutting plant. During the research, a number of experimental studies were conducted to determine the accuracy of processing in different cutting zones under different modes, and the statistical rigidity of the waterjet processing system was determined. The study of the nature of errors of machined part surfaces obtained by using water jet cutting technology, identified the causes of errors of processing of surfaces of details, the optimized parameters affecting the quality and accuracy of processing, a mathematical model of a hydroabrasive treatment