ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
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
  • Propellants and Fuels  (13)
  • Life Sciences (General)  (4)
  • Organic Chemistry  (2)
  • /  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Calcium-binding proteins in the retina of a calbindin-null mutant mouse (1998)
    Springer
    Cell & tissue research 292 (1998), S. 211-218 
    Details
    ISSN: 1432-0878
    Keywords: Key words Calbindin ; Parvalbumin ; Calretinin ; Neurofilament protein ; Calmodulin-like protein ; Mouse [calbindin null mutant ( ; / ; )]
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Calcium-binding proteins are abundantly expressed in many neurons of mammalian retinae. Their physiological roles are, however, largely unknown. This is particularly true for calcium-modulating proteins (“calcium buffers”) such as calbindin D28k. Here, we have studied retinae of wildtype (+/+) and calbindin-null mutant (–/–) mice by using immunocytochemical methods. Although calbindin immunoreactivity was completely absent in the calbindin (–/–) retinae, those cells that express the protein in wildtype retinae, such as horizontal cells, were still present and appeared normal. This was verified by immunostaining horizontal cells for various neurofilament proteins. In order to assess whether other calcium-binding proteins are upregulated in the mutant mouse and may thus compensate for the loss of calbindin, mouse retinae were also immunolabeled for parvalbumin, calretinin, and a calmodulin-like protein (CALP). In no instance could a change in the expression pattern of these proteins be detected by immunocytochemical methods. Thus, our results show that calbindin is not required for the maintenance of the light-microscopic structure of the differentiated retina and suggest roles for this protein in retinal function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004410051052
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Stoffwechselprodukte von Mikroorganismen. 231. Mitteilung230. Mitteilung s. [1].. Bafilomycin-A1-21-O-(α-L-rhamnopyranosid): Strukturaufklärung durch chemische Verknüpfung mit Bafilomycin A1 und Leucanicidin (1985)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 68 (1985), S. 83-94 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Isolation of Bafilomycin-A1-21-O-(α-L-rhamnopyranoside). Structural Determination by Chemical Correlation with Bafilomycin A1 and LeucanicidinFrom cultures of an actinomycete strain, the known antifungal and insecticidal antibiotic leucanicidin (1) and a hitherto unknown antifungal antibiotic, bafilomycin-A1-21-O-(α-L-rhamnopyranoside) (2), were isolated. The latter is spectroscopically closely related to 1 and bafilomycin A1 (3) and gave degradation products identical with compounds obtained by analogous degradation of 1 and 3.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19850680111
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Stoffwechselprodukte von Mikroorganismen. 236. Mitteilung235. Mitteilung: [1]. Schwefelhaltige Ansa-Verbindungen des Naphthomycin-Typus (1986)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 69 (1986), S. 1356-1364 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metabolites of Microorganisms. Sulfur-Containing Ansa Compounds of the Naphthomycin TypeFrom a strain of Streptomyces (Tü 2357) in addition to naphthomycin A, 4 new yellow pigments were isolated and their structures determined by spectroscopic comparison with naphthomycin A. Whereas the naphthomycins D and E are simple derivatives of naphthomycin A, having OH and H, respectively, instead of Cl, the naphthomycins F and G contain an N-acetylcysteine residue linked to the aromatic moiety by a thioether group. Degradations with O3 yielded identical products from the naphthomycins A, D, F, and G, showing coincident configurations in parts of the molecules. Naphthomycin F shows some biological activity against gram-positive bacteria and fungi, although much weaker than naphthomycin A. The naphthomycins D, E, and G are inactive against microorganisms.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19860690610
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    facet.materialart.
    Unknown
    Fatal Saccharomyces Cerevisiae Aortic Graft Infection (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Saccharomyces cerevisiae is a yeast commonly used in baking and a frequent colonizer of human mucosal surfaces. It is considered relatively nonpathogenic in immunocompetent adults. We present a case of S. cerevisiae fungemia and aortic graft infection in an immunocompetent adult. This is the first reported case of S. cerevisiue fungemia where the identity of the pathogen was confirmed by rRNA sequencing.
    Keywords: Life Sciences (General)
    Type: Journal of Clinical Microbiology (ISSN 0095-1137); 40; 7; 2691-2692
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Mastering Cryogenic Propellants (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Propellants and Fuels
    Type: GRC-E-DAA-TN16903 , 2014 Proplusion & Energy Forum; Jul 28, 2014 - Jul 30, 2014; Cleveland, Ohio; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    The Cryogenic Propellant Storage and Transfer Technology Demonstration Mission: (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This presentation provides an overview of the Cryogenic Propellant Storage and Transfer (CPST) Mission from formulation through Systems Requirements Review and into preparation for Preliminary Design Review. Accomplishments of the technology maturation phase of the project are included. The presentation then summarizes the transition, due to Agency budget constraints, of CPST from a flight project into a ground project titled evolvable Cryogenics (eCryo).
    Keywords: Propellants and Fuels
    Type: GRC-E-DAA-TN16864 , Propulsion and Energy Forum 2014; Jul 28, 2014 - Jul 30, 2014; Cleveland, OH; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    Testing of a Liquid Oxygen/Liquid Methane Reaction Control Thruster in a New Altitude Rocket Engine Test Facility (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A relocated rocket engine test facility, the Altitude Combustion Stand (ACS), was activated in 2009 at the NASA Glenn Research Center. This facility has the capability to test with a variety of propellants and up to a thrust level of 2000 lbf (8.9 kN) with precise measurement of propellant conditions, propellant flow rates, thrust and altitude conditions. These measurements enable accurate determination of a thruster and/or nozzle s altitude performance for both technology development and flight qualification purposes. In addition the facility was designed to enable efficient test operations to control costs for technology and advanced development projects. A liquid oxygen-liquid methane technology development test program was conducted in the ACS from the fall of 2009 to the fall of 2010. Three test phases were conducted investigating different operational modes and in addition, the project required the complexity of controlling propellant inlet temperatures over an extremely wide range. Despite the challenges of a unique propellant (liquid methane) and wide operating conditions, the facility performed well and delivered up to 24 hot fire tests in a single test day. The resulting data validated the feasibility of utilizing this propellant combination for future deep space applications.
    Keywords: Propellants and Fuels
    Type: NASA/TM-2012-217643 , E-18201 , E-18201-1 , Space Propulsion 2012; May 07, 2012 - May 10, 2012; Bordeaux; France
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 8
    facet.materialart.
    Unknown
    Cryogenic Propellant Storage and Transfer Technology Demonstration For Long Duration In-Space Missions (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The high specific impulse of cryogenic propellants can provide a significant performance advantage for in-space transfer vehicles. The upper stages of the Saturn V and various commercial expendable launch vehicles have used liquid oxygen and liquid hydrogen propellants; however, the application of cryogenic propellants has been limited to relatively short duration missions due to the propensity of cryogens to absorb environmental heat resulting in fluid losses. Utilizing advanced cryogenic propellant technologies can enable the efficient use of high performance propellants for long duration missions. Crewed mission architectures for beyond low Earth orbit exploration can significantly benefit from this capability by developing realistic launch spacing for multiple launch missions, by prepositioning stages and by staging propellants at an in-space depot. The National Aeronautics and Space Administration through the Office of the Chief Technologist is formulating a Cryogenic Propellant Storage and Transfer Technology Demonstration Mission to mitigate the technical and programmatic risks of infusing these advanced technologies into the development of future cryogenic propellant stages or in-space propellant depots. NASA is seeking an innovative path for human space exploration, which strengthens the capability to extend human and robotic presence throughout the solar system. This mission will test and validate key cryogenic technological capabilities and has the objectives of demonstrating advanced thermal control technologies to minimize propellant loss during loiter, demonstrating robust operation in a microgravity environment, and demonstrating efficient propellant transfer on orbit. The status of the demonstration mission concept development, technology demonstration planning and technology maturation activities in preparation for flight system development are described.
    Keywords: Propellants and Fuels
    Type: NASA/TM-2012-217642 , E-18200 , E-18200 , Space Propulsion 2012; May 07, 2012 - May 10, 2012; Bordeaux; France
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 9
    facet.materialart.
    Unknown
    Liquid Oxygen/Liquid Methane Propulsion and Cryogenic Advanced Development (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Exploration Systems Architecture Study conducted by NASA in 2005 identified the liquid oxygen (LOx)/liquid methane (LCH4) propellant combination as a prime candidate for the Crew Exploration Vehicle Service Module propulsion and for later use for ascent stage propulsion of the lunar lander. Both the Crew Exploration Vehicle and Lunar Lander were part the Constellation architecture, which had the objective to provide global sustained lunar human exploration capability. From late 2005 through the end of 2010, NASA and industry matured advanced development designs for many components that could be employed in relatively high thrust, high delta velocity, pressure fed propulsion systems for these two applications. The major investments were in main engines, reaction control engines, and the devices needed for cryogenic fluid management such as screens, propellant management devices, thermodynamic vents, and mass gauges. Engine and thruster developments also included advanced high reliability low mass igniters. Extensive tests were successfully conducted for all of these elements. For the thrusters and engines, testing included sea level and altitude conditions. This advanced development provides a mature technology base for future liquid oxygen/liquid methane pressure fed space propulsion systems. This paper documents the design and test efforts along with resulting hardware and test results.
    Keywords: Propellants and Fuels
    Type: IAC-11-C4.1.5 , E-17931 , E-17931-1 , 62nd International Aeronautical Congress; Oct 03, 2011 - Oct 07, 2011; Cape Town; South Africa
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unknown
    Concept Design of Cryogenic Propellant Storage and Transfer for Space Exploration (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Propellants and Fuels
    Type: E-18444-1 , 63rd International Astronautical Congress; Oct 02, 2012 - Oct 05, 2012; Naples; Italy
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...