Численное решение уравнений Гинзбурга-Ландау для сверхпроводящего куба

Background/aim: The loss of short wavelength sensitive (SWS) cone mechanism sensitivity is related to severe vision loss in patients with age related maculopathy (ARM). A case-control study of patients with ARM and age matched controls was performed, using blue on yellow static perimetry. Methods: A bright yellow background at 594 nm isolated the responses of short wavelength cone mechanisms to 458 nm targets. A scanning laser ophthalmoscope produced stimuli and provided real time, simultaneous fundus illumination. The macula was probed with 16 Goldmann IV targets, 1–10 degrees from fixation, using a staircase method. Results: 24 patients with non-exudative ARM were matched to 24 subjects with normal fundus appearance. SWS cone pathway sensitivity for macular targets was significantly reduced in the patients with ARM compared to normals—15.45 (SD 4.56) dB v 17.22 (0.28) dB, respectively (p<0.0005). There was not only a diffuse loss of sensitivity in ARM patients, but also a localised loss of sensitivity over drusen (p<0.025). Neither the mean age, 69 (8) years, nor the mean visual acuity differed between groups, logMAR 0.09 (0.10) v 0.05 (0.06) for ARM patients v normals, respectively. Patients with soft drusen had lower sensitivity than those with hard drusen (p <0.05). Conclusion: A loss of SWS cone pathway sensitivity occurred in most patients with early ARM, despite good visual acuity, demonstrating a loss of visual function that cannot be attributed to ageing changes. The loss of sensitivity, despite good visual acuity, included both a diffuse loss and localised losses

Анализ эффективности методов борьбы с отложениями солей на примере месторождений Западной Сибири

В ходе работы изучены теоретические основы существующих методов борьбы с отложениями солей, при эксплуатации скважин на территории Западной Сибири проведен технико-экономический анализ внедрения метода борьбы с отложениями солей при эксплуатации скважин на типовых месторождениях.In the course of the work, the theoretical foundations of existing methods of control of salt deposits in the operation of wells in Western Siberia were studied, the technical and economic analysis of the implementation of the method of control of salt deposits in the operation of wells in typical fields was carried out

Система автоматизированного тестирования электроавтоматики газопровода «Сахалин –Хабаровск-Владивосток»

В данном проекте была разработана система контроля и управления технологическим процессом на базе промышленных контроллеров Schneider Electric Modicon 258, с применением SCADA–системы Infinity. Цель работы – проектирование автоматизированной системы управления узла очистки и сбора конденсата на ГРС с использованием ПЛК, на основе выбранной SCADA–системы. Объектом исследования является узел очистки и сбора конденсата на ГРС. Разработанная система может применяться в системах контроля, управления и сбора данных на различных промышленных предприятиях. Данная система позволит увеличить производительность, повысить точность и надежность измерений, сократить число аварий. Разработана функциональная схема автоматизации, структурная схема, алгоритмы управления.This project has been developed a process monitoring and control system based on industrial controllers of Schneider Electric Modicon 258, with Infinity SCADA-system. The purpose of work - designing automated cleaning unit management system and the condensate collecting in the GDS using the PLC, based on the selected SCADA-system. The object of this study is to purification unit and condensate collection at GDS. The developed system can be used in control systems, data acquisition and control in different industrial plants. This system will increase productivity, improve the accuracy and reliability of the measurements, reduce the number of accidents. The project was designed automation functional diagram and a block diagram of the control algorithms

Quantification of Visual Field Loss in Age-Related Macular Degeneration

Background An evaluation of standard automated perimetry (SAP) and short wavelength automated perimetry (SWAP) for the central 10–2 visual field test procedure in patients with age-related macular degeneration (AMD) is presented in order to determine methods of quantifying the central sensitivity loss in patients at various stages of AMD. Methods 10–2 SAP and SWAP Humphrey visual fields and stereoscopic fundus photographs were collected in 27 eyes of 27 patients with AMD and 22 eyes of 22 normal subjects. Results Mean Deviation and Pattern Standard Deviation (PSD) varied significantly with stage of disease in SAP (both p<0.001) and SWAP (both p<0.001), but post hoc analysis revealed overlap of functional values among stages. In SWAP, indices of focal loss were more sensitive to detecting differences in AMD from normal. SWAP defects were greater in depth and area than those in SAP. Central sensitivity (within 1°) changed by −3.9 and −4.9 dB per stage in SAP and SWAP, respectively. Based on defect maps, an AMD Severity Index was derived. Conclusions Global indices of focal loss were more sensitive to detecting early stage AMD from normal. The SWAP sensitivity decline with advancing stage of AMD was greater than in SAP. A new AMD Severity Index quantifies visual field defects on a continuous scale. Although not all patients are suitable for SWAP examinations, it is of value as a tool in research studies of visual loss in AMD

Air pollution and the microvasculature: A cross-sectional assessment of in vivo retinal images in the population-based multi-ethnic study of atherosclerosis (MESA)

10.1371/journal.pmed.1000372PLoS Medicine711