Мониторинг опасных геологических процессов на территории г. Томска

International audienceTo assess the accuracy and signal quality of axial length measurements by partial coherence laser interferometry (PCI) for optical biometry in eyes with conventional (SO) or heavy silicone oil (HSO) as endotamponade

Аудит промышленной безопасности предприятия

В данное время, когда фактически нет города, где бы не работали предприятия, особый смысл имеет промышленная безопасность. С каждым годом увеличивается количество опасных объектов. Исходя из этого, проблема с безопасностью возведена в ранг основных ценностей на государственном уровне. Часто в промышленно развитых странах установлен жесткий контроль лицензирования ОПО, строительства, эксплуатации и т.д. Безопасность сооружений в этих странах контролируется государственными органами. Промышленная безопасность опасных объектов - это определенная защита общества и страны от различных техногенных катастроф и аварий. Для того, чтобы обеспечить безопасность, проводится комплекс мероприятий, которые ориентированы, прежде всего, на обеспечение безопасности технических объектов. Все организации, которые эксплуатируют опасный производственный объект, должны временами производить вышесказанные мероприятия. Это указано в Федеральном законе «О промышленной безопасности опасных производственных объектов» Цель работы: проверка соответствия установленным требованиям ПБ, подготовка рекомендаций по устранению выявленных нарушений в УНДиПР МЧС России по Томской области.At the moment, when there is virtually no city, where enterprises would not work, industrial safety has a special meaning. Every year the number of dangerous objects increases. Proceeding from this, the security problem is elevated to the rank of basic values at the state level. Often in industrialized countries, strict control of GCO licensing, construction, operation, etc. is established. The safety of facilities in these countries is controlled by government agencies.Industrial safety of hazardous facilities is a certain protection of society and the country from various man-made disasters and accidents. In order to ensure safety, a set of measures is carried out, which are focused, first of all, on ensuring the safety of technical facilities. All organizations that operate a hazardous production facility must at times produce the aforesaid activities. This is indicated in the Federal Law "On Industrial Safety of Hazardous Production Facilities" The purpose of the work: verification of compliance with the established requirements of the PB, the preparation of recommendations for the elimination of identified violations in the UNDiPR of EMERCOM of Russia for the Tomsk region

Электрооборудование и электропривод подъема кислородной фурмы

В выпускной квалификационной работе был произведён расчёт и выбор силового оборудования для электропривода подъёма кислородной фурмы. Выполнен расчёт параметров силовой цепи. Результатом расчёта является выбор асинхронного электродвигателя фирмы SIEMENS серии 1LG4310-8AB-Z мощностью 55 кВт; преобразователь частоты типа MICROMASTER 440 фирмы SIEMENS шкафного исполнения мощностью 75кВт. Исследованы переходные процессы в программе MATLAB, динамические показатели качества при отработке воздействий по управлению и возмущению во всем диапазоне регулирования скорости полностью удовлетворяют требованиям технического задания.In the final qualifying work, the calculation and selection of power equipment for the electric drive of lifting the oxygen lance was made. The parameters of the power circuit are calculated. The result of the calculation is the selection of an asynchronous electric motor from SIEMENS series 1LG4310-8AB-Z with a power of 55 kW; frequency converter type MICROMASTER 440 firm SIEMENS cabinet version 75kW. The transient processes in the MATLAB program have been studied, the dynamic quality indices during the development of control and disturbance influences in the whole range of speed regulation fully satisfy the requirements of the technical assignment

Effect of a capsular tension ring on refractive outcomes in eyes with high myopia

PURPOSE: To evaluate the effect of capsular tension ring (CTR) implantation on refractive outcomes in patients with high myopia. SETTING: University of Cologne, Department of Ophthalmology, Cologne, Germany. DESIGN: Comparative case series. METHODS: The refractive outcomes in myopic eyes were compared between phacoemulsification and IOL implantation with a CTR (CTR group) and without a CTR (control group). Optical biometry (IOLMaster) was obtained. The power of the IOL was used to calculate the predicted postoperative spherical equivalent using the Haigis and SRK/T formulas. The main outcome measures were the mean error and mean absolute error of the refractive prediction error. RESULTS: The mean axial length was 29.1 mm (range 26.5 to 34.1 mm) in the CTR group and 28.2 mm (range 25.6 to 31.1 mm) in the control group. There was no statistically significant difference in the mean absolute refractive prediction error between the CTR group and the control group with the Haigis formula (P = .921) or SRK/T formula (P = .693). However, there was lower variance in the absolute refractive prediction error in the CTR group with both formulas (P = .014 and P = .027, respectively). Intragroup differences between formulas were not statistically significant (CTR, P = .069; control P = .551). CONCLUSIONS: Implantation of a CTR had no consistent effect on refractive outcomes compared with routine phacoemulsification in highly myopic eyes. There was a tendency toward higher precision in outcomes with a CTR. Results indicate IOL power calculation does not have to be changed when a CTR is used

The XEN45 Gel Stent as a minimally invasive procedure in glaucoma surgery: success rates, risk profile, and rates of re-surgery after 261 surgeries

The XEN45 Gel Stent is a flexible hydrophilic tube placed under the conjunctiva via the anterior chamber. This study investigates the IOP (intraocular pressure)-lowering potential, the risk profile, and the success rate of the XEN45 Gel Stent. Two hundred and sixty-one eyes underwent surgery. The mean follow-up time was 8.5 months. The aim of the treatment was to achieve adequate IOP reduction without medication. Therefore, all patients who did not show sufficiently reduced IOP underwent a surgical revision with opening of the conjunctiva. To determinate the success rate, we carried out two kinds of analysis: 1) the primary success rate: eyes with appropiate IOP control without medication or surgical revision, and 2) overall success rate: one surgical revision was allowed. Intraocular pressure was lowered from 24.3 mmHg (SD 6.6) to 16.8 mmHg (SD 7.6), and the medication score was lowered from 2.6 (SD 1.1) to 0.2 (SD 0.7). Revisional surgery was performed in 80 eyes (34%). After a first revision, intraocular pressure was lowered to 14.0 mmHg (SD 5.1), and the medication score was lowered to 0.2 (SD 0.6). The primary success rate was 66% and the overall success rate 90%. The primary success rate was higher in pseudophakic eyes (73%) than in phakic eyes (53%) or combined surgery (55%). We conclude from our data that the XEN45 Gel Stent has an IOP-lowering potential and few side-effects. Pseudophakic eyes seem to have a better primary prognosis compared to combined surgery or surgery in phakic eyes

Partial Coherence Laser Interferometry in Highly Myopic versus Emmetropic Eyes

Purpose: To investigate the reliability of partial coherence laser interferometry for optical biometry in highly myopic eyes. Methods: Axial length measurements by the IOLMaster (Carl Zeiss Meditec, Germany) with signal-to-noise ratio (SNR) ≥2 were performed in 52 consecutive myopic subjects with axial length ≥26.5 mm and 45 emmetropic patients before cataract surgery. Axial length measurements and SNR were analyzed and compared among the two study groups. Results: Axial length measurements were feasible in 46 of 52 (88.5%) highly myopic eyes and in 41 of 45 (91.1%) eyes with normal axial length. To achieve two reliable axial length values with SNR ≥2, a mean number of 2.06±0.25 measurements was necessary in myopic eyes and 2.10±0.37 in emmetropic counterparts. Mean SNR after two measurements was 4.98±2.44 in myopic eyes versus 5.56±2.32 in control eyes. Even though successful measurement was independent of preoperative visual acuity, patients with visual acuity better than 20/63 showed significantly higher SNR values. Conclusions: Partial coherence laser interferometry shows satisfying feasibility and good signal quality for axial length determination in highly myopic eyes with stable retinal condition and clear media

A new surgical triple procedure in pseudoexfoliation glaucoma using cataract surgery, Trabectome, and trabecular aspiration

To evaluate the potential of lowering intraocular pressure in pseudoexfoliation glaucoma with combined phacoemulsification, Trabectome, and trabecular aspiration (triple procedure) compared to phacoemulsification and trabecular aspiration alone. Using a case-matched retrospective study design, 30 patients were included into each group. The main outcome measures were the reduction of intraocular pressure and medication score at the end of follow-up. Clinical data were collected from the patients' medical records. Mean follow-up was 15 months in both groups. Intraocular pressure decreased from 25.3 +/- 6.3 mmHg to 14.4 +/- 3.7 mmHg (p < 0.0001) in the triple procedure group and from 25.3 +/- 4.2 mmHg to 18.1 +/- 4.2 mmHg (p < 0.0001) in the control group. The medication score was lowered from 3.4 +/- 1.7 to 2.1 +/- 1.2 (p = 0.0017) in the triple procedure group and from 3.8 +/- 1.8 to 2.3 +/- 1.5 (p < 0.008) in the control group. The reduction of intraocular pressure was higher (p < 0.004) in the triple procedure group (38.4 +/- 17.3 %) compared to the control group (26.8 +/- 19.6 %) The reduction of the medication score did not differ significantly. The triple procedure is more effective in lowering intraocular pressure compared to phacoemulsification and trabecular aspiration alone in pseudoexfoliation glaucoma

Beidseitige Panuveitis als okuläre Frühmanifestation einer Lues bei einem Patienten mit HIV-1-Infektion

Syphilis is a dangerous sexually transmitted infection which can be effectively treated with penicillin to avoid late-onset diseases. Even if syphilis is diagnosed an HIV infection should be excluded