ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Communications and Radar  (4)
  • Computer Systems  (2)
  • Keywords. Trifluoromethylindolocarbazole; Cyclic N-benzylindole tetramer; N-Benzyltetraindolyltrimethane; X-Ray crystallographic analysis.  (1)
  • Chemistry
  • 2005-2009
  • 1995-1999  (7)
  • 1960-1964
  • 1925-1929
  • 1999  (7)
Collection
Publisher
Years
  • 2005-2009
  • 1995-1999  (7)
  • 1960-1964
  • 1925-1929
Year
  • 1
    ISSN: 1434-4475
    Keywords: Keywords. Trifluoromethylindolocarbazole; Cyclic N-benzylindole tetramer; N-Benzyltetraindolyltrimethane; X-Ray crystallographic analysis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung.  5,11-Dihydro-5,11-dibenzyl-6-trifluormethylindolo[3,2-b]carbazol (6) und das cyclische N-Benzylindoltrimer 4 wurden aus N-Benzylindol-3-methanol (1) und N,N′-Dibenzyl-3,3′-diindolylmethan (2) durch Behandeln mit Trifluoracetanhydrid synthetisiert. Ersteres ergab auch das36-gliedrige cyclische N-Benzylindoltetramer 7, letzteres N-Benzyl-3-trifluoracetylindol (8). Erhitzen von 1 in wässrigem Methanol führte zum Trimer 4– zusammen mit 2, dem N-Benzyltriindolylmethan 3 und dem N-Benzyl-tetraindolyltrimethan 5, für welches Struktur und Konformation imfesten Zustand durch Röntgenstrukturanalyse abgeleitet wurden. Die Resultate werden diskutiert, und plausible Mechanismen für die Reaktionen, die zu den Verbindungen 3–8 führen, werden vorgestellt.
    Notes: Summary.  5,11-Dihydro-5,11-dibenzyl-6-trifluoromethylindolo[3,2-b]carbazole (6) and the cyclic N-benzylindole trimer 4 were synthesized from both N-benzylindole-3-methanol (1) and N,N′-dibenzyl-3,3′-diindolylmethane (2) by treatment with trifluoroacetic anhydride. The former also gave the 36-membered cyclic N-benzylindole tetramer 7, and the latter furnished N-benzyl-3-trifluoroacetylindole (8). Heating 1 in aqueous methanol also yielded the trimer 4 along with 2, the N-benzylitriindolyldimethane 3, and the N-benzyltetraindolyltrimethane 5 whose structure and solid-state conformation were determined by X-ray crystallographic analysis. The results are discussed and plausible mechanisms of the reactions leading to 3–8 are presented.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2018-06-08
    Description: The Optical Communications Demonstrator (OCD) is a laboratory based lasercom terminal that was developed to validate several key technologies such as precision beam pointing, high bandwidth beacon tracking and beacon acquisition.
    Keywords: Communications and Radar
    Type: International Society for Optical Engineering (SPIE) - Laser Communications Technologies; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2018-06-08
    Description: This paper presents an overview of the preliminary design of both the flight and ground systems of the Optical Communication Demonstration and High-Rate Link Facility which will demonstrate optical communication from the International Space Station to ground after its deployment in October 2002.
    Keywords: Communications and Radar
    Type: International Society for Optical Engineering (SPIE), Free-Space Optical Communication; San Jose, CA; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2018-06-08
    Keywords: Communications and Radar
    Type: Diode Laser Technology Review; FL; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2018-06-08
    Description: Introduction to free space optical communications.
    Keywords: Communications and Radar
    Type: DESCANSO Symposium; Pasadena, CA; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2019-07-13
    Description: Classical mesh partitioning algorithms were designed for rather static situations, and their straightforward application in a dynamical framework may lead to unsatisfactory results, e.g., excessive data migration among processors. Furthermore, special attention should be paid to their amenability to parallelization. In this paper, a novel parallel method for the dynamic partitioning of adaptive unstructured meshes is described. It is based on a linear representation of the mesh using self-avoiding walks.
    Keywords: Computer Systems
    Type: IPPS''99; Apr 12, 1999 - Apr 16, 1999; San Juan; Puerto Rico
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2019-07-13
    Description: The success of parallel computing in solving real-life computationally-intensive problems relies on their efficient mapping and execution on large-scale multiprocessor architectures. Many important applications are both unstructured and dynamic in nature, making their efficient parallel implementation a daunting task. This paper presents the parallelization of a dynamic unstructured mesh adaptation algorithm using three popular programming paradigms on three leading supercomputers. We examine an MPI message-passing implementation on the Cray T3E and the SGI Origin2OOO, a shared-memory implementation using cache coherent nonuniform memory access (CC-NUMA) of the Origin2OOO, and a multi-threaded version on the newly-released Tera Multi-threaded Architecture (MTA). We compare several critical factors of this parallel code development, including runtime, scalability, programmability, and memory overhead. Our overall results demonstrate that multi-threaded systems offer tremendous potential for quickly and efficiently solving some of the most challenging real-life problems on parallel computers.
    Keywords: Computer Systems
    Type: Supercomputing; Nov 13, 1999 - Nov 19, 1999; Portland, OR; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...