977 resultados para State libraries


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Not distributed to depository libraries in a physical form,

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Not distributed to depository libraries in a physical form, 2000-

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"Reprinted from News Notes of California libraries, v.4 no. 2."

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A major problem in de novo design of enzyme inhibitors is the unpredictability of the induced fit, with the shape of both ligand and enzyme changing cooperatively and unpredictably in response to subtle structural changes within a ligand. We have investigated the possibility of dampening the induced fit by using a constrained template as a replacement for adjoining segments of a ligand. The template preorganizes the ligand structure, thereby organizing the local enzyme environment. To test this approach, we used templates consisting of constrained cyclic tripeptides, formed through side chain to main chain linkages, as structural mimics of the protease-bound extended beta-strand conformation of three adjoining amino acid residues at the N- or C-terminal sides of the scissile bond of substrates. The macrocyclic templates were derivatized to a range of 30 structurally diverse molecules via focused combinatorial variation of nonpeptidic appendages incorporating a hydroxyethylamine transition-state isostere. Most compounds in the library were potent inhibitors of the test protease (HIV-1 protease). Comparison of crystal structures for five protease-inhibitor complexes containing an N-terminal macrocycle and three protease-inhibitor complexes containing a C-terminal macrocycle establishes that the macrocycles fix their surrounding enzyme environment, thereby permitting independent variation of acyclic inhibitor components with only local disturbances to the protease. In this way, the location in the protease of various acyclic fragments on either side of the macrocyclic template can be accurately predicted. This type of templating strategy minimizes the problem of induced fit, reducing unpredictable cooperative effects in one inhibitor region caused by changes to adjacent enzyme-inhibitor interactions. This idea might be exploited in template-based approaches to inhibitors of other proteases, where a beta-strand mimetic is also required for recognition, and also other protein-binding ligands where different templates may be more appropriate.

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Gene expression studies from hematopoietic stem cell (HSC) populations purified to variable degrees have defined a set of sternness genes. Unexpectedly, results also hinted toward a HSC chromatin poised in a wide-open state. With the aim of providing a robust tool for further studies into the molecular biology of HSCs, the studies herein describe the construction and comparative molecular analysis of A-phage cDNA libraries from highly purified HSCs that retained their long-term repopulating activities (long-term HSCs [LT-HSCs]) and from short-term repopulating HSCs that were largely depleted of these activities. Microarray analysis of the libraries confirmed the previous results but also revealed an unforeseen preferential expression of translation- and metabolism-associated genes in the LT-HSCs. Therefore, these data indicate that HSCs are quiescent only in regard of proliferative activities but are in a state of readiness to provide the metabolic and translational activities required after induction of proliferation and exit from the HSC pool.

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This essay explores the relationship between the development of public libraries in the context of an increasingly market-dominated economy and marketised society. It argues that although neo-liberalism as a policy goal and practice has taken different forms over time, there are common themes in terms of its emphasis on market values, privatisation, and the support of measures that reduce the role of public funding and the state in the provision of public services. This has led some commentators to express concerns that the meaning and practice of citizenship and democracy is being transformed, managed or otherwise diminished. These concerns are compounded by changes effected by new digital technology. Imbricated with this issue are debates surrounding the future of the public library, and attempts by librarians and others to reinvent and reimagine its purpose. With reference to some innovative initiatives in the USA and Scandinavia, it is suggested that public libraries, through their service and spatial rearticulation, can conceivably help strengthen and revitalise public democracy and the public sphere.

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The current research activities of the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences (IMI—BAS) include the study and application of knowledge-based methods for the creation, integration and development of multimedia digital libraries with applications in cultural heritage. This report presents IMI-BAS’s developments at the digital library management systems and portals, i.e. the Bulgarian Iconographical Digital Library, the Bulgarian Folklore Digital Library and the Bulgarian Folklore Artery, etc. developed during the several national and international projects: - "Digital Libraries with Multimedia Content and its Application in Bulgarian Cultural Heritage" (contract 8/21.07.2005 between the IMI–BAS, and the State Agency for Information Technologies and Communications; - FP6/IST/P-027451 PROJECT LOGOS "Knowledge-on-Demand for Ubiquitous Learning", EU FP6, IST, Priority 2.4.13 "Strengthening the Integration of the ICT research effort in an Enlarged Europe" - NSF project D-002-189 SINUS "Semantic Technologies for Web Services and Technology Enhanced Learning". - NSF project IO-03-03/2006 ―Development of Digital Libraries and Information Portal with Virtual Exposition "Bulgarian Folklore Heritage". The presented prototypes aims to provide flexible and effective access to the multimedia presentation of the cultural heritage artefacts and collections, maintaining different forms and format of the digitized information content and rich functionality for interaction. The developments are a result of long- standing interests and work in the technological developments in information systems, knowledge processing and content management systems. The current research activities aims at creating innovative solutions for assembling multimedia digital libraries for collaborative use in specific cultural heritage context, maintaining their semantic interoperability and creating new services for dynamic aggregation of their resources, access improvement, personification, intelligent curation of content, and content protection. The investigations are directed towards the development of distributed tools for aggregating heterogeneous content and ensuring semantic compatibility with the European digital library EUROPEANA, thus providing possibilities for pan- European access to rich digitalised collections of Bulgarian cultural heritage.

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The monthly New South Carolina State Documents publication by the State Library provides a list of state documents published by state agencies that have been cataloged and added to the South Carolina State Documents Depository. Included is the title, author and/or agency, description, thumbnail, link to access full-text file, and OCLC number.

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The monthly New South Carolina State Documents publication by the State Library provides a list of state documents published by state agencies that have been cataloged and added to the South Carolina State Documents Depository. Included is the title, author and/or agency, description, thumbnail, link to access full-text file, and OCLC number.

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This Summer 2016 newsletter from the South Carolina State Library, volume 42, issue 3, features news and updates about the Talking Book Services, a federally-funded program to meet the reading needs of South Carolina residents who are physically unable to read or use standard printed materials.

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The monthly New South Carolina State Documents publication by the State Library provides a list of state documents published by state agencies that have been cataloged and added to the South Carolina State Documents Depository. Included is the title, author and/or agency, description, thumbnail, link to access full-text file, and OCLC number.

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This study examines the services provided by the bookmobile of SINABI-Public Libraries in rural communities visited Costa Rica during 2009 and 2010 according to the sample selected for the presentation of a proposed Mobile Library Network to Costa Rica.Each country has very heterogeneous populations and the populations in unfavorable geographical areas (rural or urban fringe areas) and areas without library service or cultural institution, they have specific information needs. By its terms can not exercise the right to information, while urban areas have greater influence and social advantage to have easy access to various information resources.The mobile library services are presented as an ideal tool to deliver library services to any population, mainly those remote communities and vulnerable state as rural areas. Bookmobile is defined as any means of transport (buses, trains, boats, motorcycles, boats, animals, etc.), which shifts documentary material.

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The monthly New South Carolina State Documents publication by the State Library provides a list of state documents published by state agencies that have been cataloged and added to the South Carolina State Documents Depository. Included is the title, author and/or agency, description, thumbnail, link to access full-text file, and OCLC number.

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The monthly New South Carolina State Documents publication by the State Library provides a list of state documents published by state agencies that have been cataloged and added to the South Carolina State Documents Depository. Included is the title, author and/or agency, description, thumbnail, link to access full-text file, and OCLC number.