Synthesis Of Biodegradable Star-Shaped Polymers Using Bio-Based Polyols Via Ring-Opening Polymerization Of Β-Butyrolactone With Amido-Oxazolinate Zinc Catalysts

A new series of star-shaped and highly branched poly(β-hydroxybutyrates) (PHBs) with a distinct structure was synthesized by ring-opening polymerization (ROP) of β-butyrolactone (BBL) with amido-oxazolinate zinc catalysts. The ROP of BBL using multifunctional hydroxyl-terminated initiators is an efficient methodology that allowed the preparation of PHBs with not only well-controlled molecular weights (Mn) and narrow dispersity (Đ), but also well-defined end-functional groups. Furthermore, the modifications of star-shaped and highly branched PHBs resulted in various architectures with tailored properties for many applications particularly for the biomedical field. Star-shaped structure is constructed via a core-first approach, in which the multi-functional alcohols will serve as the initiator for ROP. Specifically, three-, four-, and multi-armed star polymers were obtained and thoroughly characterized by various techniques such as nuclear magnetic resonance (NMR) spectroscopy, gel permeation chromatography (GPC), and their thermal and mechanical properties were investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). These properties were compared with the linear PHBs since it is expected that branched architectures may have different features. Moreover, the impact of the arm numbers and the arm lengths was studied on thermal properties of the obtained star-shaped PHBs, which strongly depended upon their arm numbers and arm lengths

Автоматизированная информационно-библиотечная система «Библиобус»: современная версия

The article is devoted to the work of the automated information library system (AILS) “Bibliobus”, developed by specialists of the Library for Natural Sciences of the Russian Academy of Sciences (LNS RAS). The purpose of this article is to acquaint readers of the journal with the specific features of the modern AILS “Bibliobus” that provides complex automation of the main technological processes on the “way of book” of non-periodicals received in the centralized library system (CLS) holdings of LNS RAS. The authors describe capability features and functions of the system, the rules of work with it, the user interface for performing work related to centralized acquisition, book registration and distribution of the incoming books between the CLS libraries, cataloguing, classifying, etc. The system has a number of features that distinguish it from most automated library systems. It is focused on the centralized library network; part of the information is entered in the Centre, part — interactively in the libraries of the network; all the accounting and financial documents required by the centralized system are generated automatically. The AILS “Bibliobus” widely uses the bar coding, it applies to all stages of publication processing on the “way of book”; the bar codes appear on all supporting documents and printed cards. When cataloguing the publications, bibliographer introduces in the main “window” of system the bibliographic description in the format of State Standard GOST 7.1—2003 with some mark-ups, and in additional “windows” — the maximum possible metadata, providing multi-aspect search of the publication in the catalogue; the search fields for e-catalogue are generated automatically. The AILS “Bibliobus” provides for the formation of multi-level records. Its database stores the images of scanned text pages displayed in the electronic catalogue; all operations are logged with the start and end time, which allowed building on its basis a powerful reference and statistical system. The system has a modern user interface that allows the operator to obtain multiple information on various aspects of technological operations.Статья посвящена работе автоматизированной информационно-библиотечной системы (АИБС) «Библиобус», разработанной специалистами Библиотеки по естественным наукам Российской академии наук (БЕН РАН). Цель статьи — познакомить читателей журнала с особенностями современной АИБС «Библиобус», обеспечивающей комплексную автоматизацию основных технологических процессов по «пути книги» непериодических изданий, поступающих в фонды ЦБС БЕН РАН. Описываются возможности и функции системы, правила работы с ней, пользовательский интерфейс при выполнении работ, связанных с централизованным комплектованием, регистрацией поступлений и распределением поступающих книг между библиотеками ЦБС, каталогизацией, систематизацией и т. д. Система имеет ряд особенностей, отличающих ее от большинства автоматизированных библиотечных систем. Она ориентирована на централизованную библиотечную сеть, часть информации вводится в центре, часть — в библиотеках сети в интерактивном режиме; все необходимые для централизованной системы учетно-финансовые документы формируются автоматически. В АИБС «Библиобус» широко используется штрих-кодирование — оно применяется на всех этапах обработки издания по «пути книги», штрих-коды выводятся на все сопроводительные документы и на печатные карточки. При каталогизации изданий библиограф вводит в основное «окно» системы библиографическое описание в формате ГОСТ 7.1—2003 с некоторой разметкой, а в дополнительные «окна» — максимально возможное количество метаданных, обеспечивающих многоаспектный поиск издания в каталоге; поисковые поля для электронного каталога формируются автоматически. АИБС «Библиобус» предусматривает формирование многоуровневых записей. В ее базе данных хранятся образы отсканированных страниц текста, выводимые в электронный каталог; протоколируются все операции с указанием времени начала и конца, что позволило построить на ее основе мощную справочно-статистическую систему. Система обладает современным пользовательским интерфейсом, позволяющим оператору получать информацию по различным аспектам технологических операций

A Roadmap for HEP Software and Computing R&D for the 2020s

Particle physics has an ambitious and broad experimental programme for the coming decades. This programme requires large investments in detector hardware, either to build new facilities and experiments, or to upgrade existing ones. Similarly, it requires commensurate investment in the R&D of software to acquire, manage, process, and analyse the shear amounts of data to be recorded. In planning for the HL-LHC in particular, it is critical that all of the collaborating stakeholders agree on the software goals and priorities, and that the efforts complement each other. In this spirit, this white paper describes the R&D activities required to prepare for this software upgrade.Peer reviewe

DESY Report

Status and plans at the DESY computer center, the T2 and the national analysis facilit

dCache: Visualization of dCache accounting information with state-of-the-art Data Analysis Tools.

Over the previous years, storage providers in scientific infrastructures were facing a significant change in the usage profile of their resources. While in the past, a small number of experiment frameworks were accessing those resources in a coherent manner, now, a large amount of small groups or even individuals request access in a completely chaotic way. Moreover, scientific laboratories have been recently forced to provide detailed accounting information for their communities and individuals. Another consequence of the chaotic access profiles is the difficulty, for often rather small operating teams, to detect malfunctions in extremely complex storage systems, composed of a large variety of different hardware components. Although information about usage and possible malfunction is available in the corresponding log and billing files, the sheer amount of collected meta data makes it extremely difficult to be handled or interpreted. Simply the dCache production instances at DESY are producing Gigabytes of meta data per day. To cope with those pressing issues, DESY has been evaluating and put into production a Big Data processing tool, enabling our operation team to analyze log and billing information by providing a configurable and easy to interpret visualization of that data. This presentation will demonstrate how DESY built a real-time monitoring system, visualizing dCache billing files and providing an intuitive and simple to operate Web interface, using ElasticSearch, Logstash and Kibana

Containerized Batch System Monitoring

Running a batch system for grid jobs and for local users, we investigate a generic solution to monitor the resource usages of jobs. We extend a standard toolkit for monitoring container performance metrics also for non-containerized applications, so that we can make easy use of a popular industry solution. By concentrating on the basic kernel features also used by containers frameworks, we envisage to use the same tools on non-containerized batch systems as well as container orchestrators. For deployment, we encapsulate the tools as Singularity containers and distribute them via CVMFS

Containerized Batch System Monitoring

Running a batch system for grid jobs and for local users, we investigate a generic solution to monitor the resource usages of jobs. We extend a standard toolkit for monitoring container performance metrics also for non-containerized applications, so that we can make easy use of a popular industry solution. By concentrating on the basic kernel features also used by containers frameworks, we envisage to use the same tools on non-containerized batch systems as well as container orchestrators. For deployment, we encapsulate the tools as Singularity containers and distribute them via CVMFS

Containerized Batch System Monitoring

Running a batch system for grid jobs and for local users, we investigate a generic solution to monitor the resource usages of jobs. We extend a standard toolkit for monitoring container performance metrics also for non-containerized applications, so that we can make easy use of a popular industry solution. By concentrating on the basic kernel features also used by containers frameworks, we envisage to use the same tools on non-containerized batch systems as well as container orchestrators.For deployment, we encapsulate the tools as Singularity containers and distribute them via CVMFS

Data Challenges in Photon Science

This presentation will give an overview about the data life cycle in photon science and the resulting challenges on data handling. The discussed topics include data taking, analysis, storage and archival. The technical realization is illustrated on an example of currently developed infrastructures for synchrotrons and free electron lasers