400 research outputs found

    Геология Эльмусской площади и проект поисковых работ на рудное золото в пределах участка Талпус (Республика Карелия)

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    Выпускная квалификационная работа 126 с., 5 рис., 43 табл., 18 источников, 4 прил. Ключевые слова: рудопроявление золота, участок Талпус, Эльмусская площадь, поисковые работы, геохимическая модель, прогнозные ресурсы. Объектом исследования является (ются) Рудопроявление Талпус. Цель работы – Обоснование постановки поисковых работ и разработка методики поисковых работ. В процессе исследования проводились изучение геохимической характеристики рудопроявления Талпус, разработка методики поисковых работ и экономическая оценка. В результате исследования дано обоснование поисковых работ, построена геохимическая модель рудопроявления, подсчитаны экономические затраты проектируемых работ. Основные конструктивные, технологические и технико-эксплуатационные характеристики: проектируемые работыFinal qualifying work 126 p., 5 fig., 43 tab., 18 sources, Appendix 4. Keywords: ore occurrence of gold, Talpus site Elmusskaya area search works, geochemical model, inferred resources. The object of this study is (are) Levo Talpus. Objective - Rationale statement prospecting and development of methods of prospecting. The study carried out the study of geochemical characteristics of the ore Talpus, development of methods of prospecting and economic evaluation. The study substantiates prospecting, geochemical model built ore, calculated the economic costs projected works. The basic constructive, technological and technical and operational characteristics: the projected works are consistent with the staging of exploration and meet the basic requirements of setting prospecting Degree

    Absorption spectra of poly-N-vinylcarbazole derivatives by experiment and simulation

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    Geometry molecular optimization and quantum chemical simulations of absorption spectra for newly synthesized poly-N-vinylcarbazole derivatives were performed using a semi-empirical approach. The studied polymers were modified by changing the positions of the carbazole group with respect to the polymer backbone. The absorption spectra were calculated for different numbers of PNVK monomers. A sufficient agreement between the calculated and experimentally measured spectra was observed. A change of the red shift absorption with respect to the blue shift was observed for cases when the number of monomers was higher than 4. The theoretical simulations indicate that this behavior is a consequence of the specific molecular structure of the considered molecules. The results demonstrate the potential of combined simulation and experimental studies in materials engineering and searching of new electro-luminescent materials

    Маркшейдерский учет добычи угля

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    В монографии приведены результаты исследования точности маркшейдерского учета добычи угля, позволившие установить влияние геомеханического состояния угольного пласта по линии очистного забоя, геометрических параметров тектонических нарушений и искривленности линии очистного забоя на точность определения объемов добычи. Результаты исследований позволяют усовершенствовать методику маркшейдерских замеров выработанного пространства, и обеспечивают повышение точности и оперативности учета добычи

    Проектирование информационной системы для валютных операций в банке

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    Выпускная квалификационная работа выполнена на 97 с., 18 рисунков, 36 табл., 26 источников. Объектом исследования являются валютные операции в банке, расчет доходов и расходов банка, гибкий курс обмена и процесс переоценки валюты в банке. Цель работы – разработка информационной системы для реализации валютных операций в банке. В процессе исследования проводился анализ предметной области – валютные операции банка и правила их учета в валютной бухгалтерии. В результате исследования была спроектирована банковская информационная система 슫Валютные операции슻.Final qualifying work is done on 97 p., 18 figures, 36 tables., 26 sources. Object of research are foreign exchange transactions in the Bank, calculate the income and expenses of the Bank, flexible exchange rate and the process of currency revaluation in Bank. The work purpose – development of information system for realization of currency operations at the Bank. In the process of investigation the analysis of the subject area – foreign exchange operations of the Bank and their accounting in foreign currency accounting. The study was designed by the banking information system "foreign Exchange transactions"

    Evaluation of the Influence of a Thioether Substituent on the Solid State and Solution Properties of N\u3csub\u3e3\u3c/sub\u3eS-ligated Copper(II) Complexes

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    Admixture of a N3S(thioether) ligand having two internal hydrogen bond donors (pbnpa: N-2-(phenylthio)ethyl-N,N-bis-((6-neopentylamino-2-pyridyl)methyl)amine; ebnpa: N-2-(ethylthio)ethyl-N,N-bis-((6-neopentylamino-2-pyridyl)methyl)amine) with equimolar amounts of Cu(ClO4)2·6H2O and NaX (X = Cl−, NCO−, or N3−) in CH3OH/H2O yielded the mononuclear Cu(II) derivatives [(pbnpa)Cu–Cl]ClO4 (1), [(ebnpa)Cu–Cl]ClO4 (2), [(pbnpa)Cu–NCO]ClO4 (3), [(ebnpa)Cu–NCO]ClO4 (4), [(pbnpa)Cu–N3]ClO4 (5), and [(ebnpa)Cu–N3]ClO4 (6). Each complex was characterized by FTIR, UV-VIS, EPR, and elemental analysis. Complexes 1, 2, 3 and 6 were characterized by X-ray crystallography. The structural studies revealed that [(pbnpa)Cu–X]ClO4 derivatives (1, 3) exhibit a distorted square pyramidal type geometry, whereas [(ebnpa)Cu–X]ClO4 complexes (2, 6) may be classified as distorted trigonal bipyramidal. EPR studies in CH3OH/CH3CN solution revealed that 1–6 exhibit an axial type spectrum with g∥ \u3e g⊥ \u3e 2.0 and A∥ = 15–17 mT, consistent with a square pyramidal based geometry for the Cu(II) center in each complex. A second species detected in the EPR spectra of 2 and 6 has a smaller A∥ value, consistent with greater spin delocalization on to sulfur, and likely results from geometric distortion of the [(ebnpa)Cu(II)–X]+ ions present in 2 and 6

    XRCC2 R188H (rs3218536), XRCC3 T241M (rs861539) and R243H (rs77381814) single nucleotide polymorphisms in cervical cancer risk

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    Human Papillomavirus (HPV) is the main cause of cervical cancer and its precursor lesions. Transformation may be induced by several mechanisms, including oncogene activation and genome instability. Individual differences in DNA damage recognition and repair have been hypothesized to influence cervical cancer risk. The aim of this study was to evaluate whether the double strand break gene polymorphisms XRCC2 R188H G>A (rs3218536), XRCC3 T241M C>T (rs861539) and R243H G>A (rs77381814) are associated to cervical cancer in Argentine women. A case control study consisting of 322 samples (205 cases and 117 controls) was carried out. HPV DNA detection was performed by PCR and genotyping of positive samples by EIA (enzyme immunoassay). XRCC2 and 3 polymorphisms were determined by pyrosequencing. The HPV-adjusted odds ratio (OR) of XRCC2 188 GG/AG genotypes was OR = 2.4 (CI = 1.1-4.9, p = 0.02) for cervical cancer. In contrast, there was no increased risk for cervical cancer with XRCC3 241 TT/CC genotypes (OR = 0.48; CI = 0.2-1; p = 0.1) or XRCC3 241 CT/CC (OR = 0.87; CI = 0.52-1.4; p = 0.6). Regarding XRCC3 R243H, the G allele was almost fixed in the population studied. In conclusion, although the sample size was modest, the present data indicate a statistical association between cervical cancer and XRCC2 R188H polymorphism. Future studies are needed to confirm these findings.Fil: Perez, Luis Orlando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Crivaro, Andrea Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Barbisan, Gisela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Poleri, Lucía Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Golijow, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentin
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