The ATLAS experiment at LHC relies on databases for detector online data-taking, storage and retrieval of configurations, calibrations and alignments, post data-taking analysis, file management over ...the grid, job submission and management, condition data replication to remote sites. Oracle Relational Database Management System (RDBMS) has been addressing the ATLAS database requirements to a great extent for many years. Ten database clusters are currently deployed for the needs of the different applications, divided in production, integration and standby databases. The data volume, complexity and demands from the users are increasing steadily with time. Nowadays more than 20 TB of data are stored in the ATLAS production Oracle databases at CERN (not including the index overhead), but the most impressive number is the hosted 260 database schemes (for the most common case each schema is related to a dedicated client application with its own requirements). At the beginning of 2012 all ATLAS databases at CERN have been upgraded to the newest Oracle version at the time: Oracle 11g Release 2. Oracle 11g come with several key improvements compared to previous database engine versions. In this work we present our evaluation of the most relevant new features of Oracle 11g of interest for ATLAS applications and use cases. Notably we report on the performance and scalability enhancements obtained in production since the Oracle 11g deployment during Q1 2012 and we outline plans for future work in this area.
Modern scientific experiments collect vast amounts of data that must be catalogued to meet multiple use cases and search criteria. In particular, high-energy physics experiments currently in ...operation produce several billion events per year. A database with the references to the files including each event in every stage of processing is necessary in order to retrieve the selected events from data storage systems. The ATLAS EventIndex project is studying the best way to store the necessary information using modern data storage technologies (Hadoop, HBase etc.) that allow saving in memory key-value pairs and select the best tools to support this application from the point of view of performance, robustness and ease of use. This paper describes the initial design and performance tests and the project evolution towards deployment and operation during 2014.
ATLAS maintains a rich corpus of event-by-event information that provides a global view of the billions of events the collaboration has measured or simulated, along with sufficient auxiliary ...information to navigate to and retrieve data for any event at any production processing stage. This unique resource has been employed for a range of purposes, from monitoring, statistics, anomaly detection, and integrity checking, to event picking, subset selection, and sample extraction. Recent years of data-taking provide a foundation for assessment of how this resource has and has not been used in practice, of the uses for which it should be optimized, of how it should be deployed and provisioned for scalability to future data volumes, and of the areas in which enhancements to functionality would be most valuable. This paper describes how ATLAS event-level information repositories and selection infrastructure are evolving in light of this experience, and in view of their expected roles both in wide-area event delivery services and in an evolving ATLAS analysis model in which the importance of efficient selective access to data can only grow.
To date, the operation of choice in young patients with high myopia, is the implantation of posterior chamber phakic intraocular lenses (PIOL), provided that there are contraindications to ...keratorefractive interventions, However, in the late postoperative period, cataracts may occur, which requires the development of surgical tactics for lens explantation with simultaneous phacoemulsification of cataract (FEC) implementation.
The purpose
is to develop and analyze a method for removing a PIOL through a 2 mm corneal incision in subcapsular cataract cases.
Material and methods
. Posterior chamber domestic models of PIOL type RSK-1(3) and RSK-3 in 22 patients (37 eyes), implanted in the S.N. FEDOROV “EYE MICROSURGERY” clinic in 1994 – 2001 had to be removed due to the development of secondary cataracts. PIOL stayed in the eye 2 to 26 years (averagely 14.30 ± 1.30 yrs). In all cases, the P IOL was removed followed by FEC with implantation of a posterior chamber IOL. The optical power of the IOL was calculated mainly in such a way that the residual myopic refraction was 2.0–3.0 D.
Results.
The intraoperative condition of the anterior chamber was stable, the volume of irrigation fluid consumed was within 90–120 ml. No complications were detected in the early and late postoperative periods. The results of dynamic ophthalmological follow up of patients showed that visual acuity without correction and with correction after surgery averaged 0.2 ± 0.1 and 0.60 ± 0.15, respectively.
Conclusion.
The proposed method of explantation of domestic lenses of S.N. FEDOROV NMRC MNTK “EYE MICROSURGERY” shows that it enables a safe, simple removal of PIOL in the event of secondary subcapsular cataract, which allows achieving high clinical and functional results without overspending the irrigation solution.
Introduction. The use of phakic intraocular lens (PIOL) for the correction of high ametropia is reflected in the works of both domestic and foreign ophthalmologists. In spite of this, there are very ...few publications which are devoted to the long-term outcomes of the use of domestically produced models of PIOL such as RSK-1(3) and RSK-3. Purpose. The main aim of this work is to assess the clinical and functional outcomes of the use of domestically produced models of PIOL such as RSK-1(3) and RSK-3. Material and methods. A retrospective analysis of the long-term results of PIOL implants performed at the Fyodorov Eye Microsurgery Federal State Institution was carried out from 1994 to 2001. The analysis involved 122 eyes of 84 patients with high myopia from who were implanted with posterior chamber negative PIOL with two haptic elements (RSK-3) and PIOL with three haptic elements (RSK-1(3). Results. Analysis of the dynamics of postoperative refractive data in compare with preoperative parameters showed us that in all cases there was a significant increase in uncorrected and corrected visual acuity. Long-term outcomes of implantation were found in 25 patients (43 eyes). The average duration of PIOL in the eye was 14.30±1.3 g (from 2 to 30 years). In all cases, the reducing cell density of the corneal epithelium did not exceed 4.0% in the early postoperative period. At the same time, the main complication in the distant postoperative period was the development of subcapsular cataracts. Conclusions. This method of ametropia correction can be recommended to young patients, who are not suitable for keratorefraction interventions. Key words: phakic intraocular lens, high myopia.
The SR-micro-XRF method was used to search for microparticles of extraterrestrial matter in the bottom sediments of Lake Zapovednoye, located 60 km from the epicentre of the explosion of the Tunguska ...cosmic body (TCB) in 1908. The material of bottom sediments dating back to 1908–1910 was studied. The samples for the study were prepared in the form of a powder applied to a conductive adhesive tape, which made it possible to combine the data of optical observations, electron microscopy, and micro-XRF scanning. The experiments were carried out at the Large-Scale Research Facilities "Kurchatov Centre for Synchrotron Research" using a confocal X-ray microscope developed at the Budker Institute of Nuclear Physics SB RAS. The data obtained indicate the presence of microparticles with an increased Ni/Fe ratio, possibly of extraterrestrial origin.
Формирование вторичной катаракты у пациентов с миопией высокой степени остается основной причиной снижения зрения в отдаленном послеоперационном периоде. С учетом данного обстоятельства в ФГАУ «МНТК ...«Микрохирургия глаза» была разработана мягкая модель заднекамерной «реверсной» ИОЛ, позволяющая снизить развитие вторичной катаракты. Цель. Сравнительный анализ клинико-функциональных результатов имплантации «реверсной-М» и «реверсной-М1» ИОЛ у пациентов с миопией высокой степени в отдаленном послеоперационном периоде. Материал и методы. Клинические исследования проведены на 1 40 глазах 97 пациентов с миопией высокой степени в возрасте от 42 до 83 лет (в среднем 64,24±0,79 года) после проведения факоэмульсификации катаракты (ФЭК) с имплантацией ИОЛ при миопии высокой степени. Основную группу составили 57 глаз 40 пациентов, которым была имплантирована «реверсная-М1» ИОЛ, контрольную группу - 83 глаза 57 пациентов, которым была имплантирована «реверсная-М» ная-М» ИОЛ. Острота зрения до операции без коррекции ни у одного пациента не превышала 0,01, а с максимальной коррекцией была не более 0,2 (80%). Срок наблюдения составил до 5 лет. Результаты. Зрительные функции у большинства пациентов повысились и оставались стабильными в течение всего послеоперационного периода, составляя 0,55±0,04 в основной группе и 0,54±0,03 в контрольной. В позднем послеоперационном периоде рассечение задней капсулы хрусталика с «реверсной-М» ИОЛ было проведено на 11 глазах 13 пациентов (13,2%), в основной группе проведение YAG-лазерной дисцизии задней капсулы потребовалось 2 пациентам на 3 глазах (5,3%). Заключение. Имплантация «реверсной-М1» ИОЛ безопасна, предсказуема и позволяет снизить частоту вторичной катаракты более чем в 2 раза в сравнении с «реверсной-М» ИОЛ.
Актуальность. Использование факичной интраокулярной линзы (ФИОЛ) для коррекции аметропии высокой степени отражено в работах как отечественных, так и зарубежных офтальмологов. Публикаций, посвященных ...отдаленным результатам применения отечественных моделей ФИОЛ типов «РСК-1(3)» и «РСК-3», нами найдено не было. Цель. Оценить отдаленные клинико-функциональные результа- ты применения отечественных моделей ФИОЛ типов «РСК-1(3)» и «РСК-3». Материал и методы. Был проведен ретроспективный анализ отда- ленных результатов имплантаций ФИОЛ, выполненных в клинике МНТК «Микрохирургия глаза» им. С.Н. Федорова за период 1994-2001 гг. Результаты. Анализ динамики послеоперационных рефракцион- ных данных в сравнении с предоперационными параметрами свиде- тельствовал о достижении во всех случаях значительного роста некорригированной и корригированной остроты зрения. Отдаленные результаты имплантаций удалось проследить у 25 пациентов (43 глаза). Средний срок нахождения ФИОЛ в глазу составлял 14,30±1,3 года (от 2 до 30 лет). Падение плотности клеток внутреннего эпителия роговицы ни в одном случае не превышало 4,0% в раннем послеоперационном периоде. При этом основным осложнением отдаленного послеоперационного периода явилось развитие субкапсулярной катаракты. Заключение. Данный метод коррекции аметропий может быть рекомендован пациентам молодого возраста, которым проведение кераторефракционных вмешательств противопоказано.
An anomalous layer enriched with chemical elements indicating the presence of terrigenous matter was discovered in the sediment core of Zapovednoe Lake located 60 km from the epicenter of the ...Tunguska event (1908) using synchrotron radiation X-ray fluorescence spectroscopy (SR–XRF). Radioisotope measurements indicate that the age of the layer is consistent with the date of the catastrophe. Apparently, the anomalous layer was formed as a result of an intense terrigenous matter inflow from the water catchment area due to massive forest falls and subsequent wildfires caused by the Tunguska event. Thus, it is established that targeted searches for microparticles of extraterrestrial origin can be carried out in the discovered and dated anomalous bottom sediment layer.
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