Проект реконструкции подстанции 110/6 кВ Опорная-6

Реферат Выпускная квалификационная работа – 87 с., 2 рисунков, 16 таблиц, 113 источников литературы, 1 приложения, 4чертежа. Ключевые слова: режим энергосистемы, моделирование режимов, надежность энергосистем, нагрузка, допустимые параметры режима, пропускная способность электрических сетей, воздушная линия электропередачи. Объектом исследования является схема электрических сетей подстанции ОП-6. Целью работы является расчёт реконструкции подстанции и анализ нормальных и послеаварийных режимов электрических сетей ОП-6 энергосистемы с вводом их в допустимую область по напряжению, а также оценка пропускной способностью.Abstract Final qualifying work – 87 p., 2 figures, 16 tables, 113 references, 1 app, 4чертежа. Keywords: grid, simulation, reliability of power systems, load, valid mode parameters, throughput of electric networks, overhead line power. The object of the research is the scheme of electric networks of the substation OP-6. The aim of this work is the calculation of the reconstruction of the substation and the analysis of normal and post-accident modes of electrical networks of OP-6 power system with their input in the permissible range for voltage and rating capacity

Anatomic site-specific patterns of gene copy number gains in skin, mucosal, and uveal melanomas detected by fluorescence in situ hybridization

To assess the differences between melanomas of different location and different etiology, 372 malignant melanomas were brought in a tissue microarray format. The collection included 23 acral and 118 non-acral skin melanomas, 9 mucosal melanomas, 100 uveal melanomas, and 122 melanoma metastases. Fluorescence in situ hybridization (FISH) was used to assess copy number changes of the cyclin D1 (CCND1), MDM2, c-myc (MYC), and HER2 genes. FISH analysis revealed distinct differences between melanomas from different locations. CCND1 amplifications were detected in skin melanomas from sites with chronic sun exposure (6 of 32 cases), acral melanomas (4 of 17 cases), and mucosal melanomas (one of ten cases) but not in uveal melanomas. High-level MDM2 amplifications were exclusively present in acral melanomas (2 of 19 cases). MYC copy number gains were detected in 32 of 71 uveal melanomas, five of eight mucosal melanomas, and 6 of 67 melanomas from sites with intermittent sun exposure but not in acral melanomas nor melanomas from sites with chronic sun exposure. Alterations of the MYC gene were associated with advanced tumor stage. There were no high-level HER2 amplifications. Site-specific genetic and epigenetic features may impact the response of melanomas to various anti-cancer drugs and should be considered in future studies on the molecular pathogenesis of malignant melanoma

Expression and amplification of therapeutic target genes in retinoblastoma

Purpose: We set out to evaluate alterations of the therapeutic target genes KIT (CD 117), EGFR, and HER-2 in human retinoblastoma. Methods: Ninety-five formalin-fixed, paraffin-embedded retinoblastomas were brought into a tissue microarray (TMA) format. Immunohistochemistry was performed to analyze the expression of CD117, EGFR, and HER-2. Fluorescence in situ hybridization (FISH) was utilized for detection of EGFR amplifications. Three tumors with strong CD117 positivity were sequenced for KIT exon 11 mutations. Results: Detectable CD117 expression was seen in 19% of all interpretable cases. Sequence analysis of the three tumors with the strongest CD117 expression revealed no mutations. EGFR was positive in 14% of all cases. No EGFR amplification was observed by FISH, however. All tumors were negative for HER-2 expression. Conclusions: Our data suggest that selected cases of retinoblastoma may be candidates for anti-EGFR and imatinib mesylate (STI571) therap

Colour vision deficiencies in Alzheimer's disease

Objective: visual disorders are among the earliest symptoms of Alzheimer's disease. It is, however, still controversial as to whether Alzheimer's disease impairs colour vision. In this study, colour vision of Alzheimer's disease patients was tested using the Ishihara test and the PV‐16 choice test. The latter test, primarily designed for children, was chosen in order to avoid problems due to cognitive decline. Methods: 26 patients with mild to severe Alzheimer's disease (M:F=5:21; mean age: 80±9 years, range: 53-95 years) and 25 controls (M:F=5:20; mean age 80±10 years, range: 56-100 years) were rated after undergoing complete neuro‐ophthalmologic examination. Results: the Alzheimer's disease patients made significantly more unspecific errors in the Ishihara test (P=0.02) and in the PV‐16 choice test (P=0.0008) than the controls. No relation between test performance and severity of Alzheimer's disease was found. Conclusions: Alzheimer's disease patients have an unspecific colour vision deficiency independent of the severity of the diseas

Sequence analysis and high-throughput immunhistochemical profiling of KIT (CD 117) expression in uveal melanoma using tissue microarrays

We aimed to immunohistochemically examine the expression of KIT (CD 117) in human posterior uveal melanoma and to analyze KIT-positive tumors for gene mutations. Brought into a tissue microarray (TMA) format were 101 formalin-fixed, paraffin-embedded posterior uveal melanomas. Immunhistochemistry was performed using the polyclonal anti-CD117 antibody from Dako (A4502). In ten selected KIT-positive tumors, exons 2, 8, 9, 11, 13 and 17 were sequenced. Of the 101 cases, 89 (88%) could be evaluated on the TMAs. Immunohistochemistry for CD 117 was weakly positive in 5 cases (6%), moderately positive in 10 cases (12%) and strongly positive in 57 cases (69%). No KIT mutations were detected in the analyzed exons. In conclusion, human posterior uveal melanoma frequently expresses CD117 at high levels. Although KIT mutations could not be found, it appears justified to investigate the utility of imatinib mesylate in the treatment of these patient