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
  • Institute of Physics  (33)
  • American Association for the Advancement of Science (AAAS)  (17)
  • 1995-1999  (50)
  • 1997  (28)
  • 1996  (22)
  • 1
    facet.materialart.
    Unknown
    Strontianite in coral skeletal aragonite (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-03-07
    Description: An x-ray spectroscopic study of scleractinian coral skeletons indicated that, although some strontium substitutes for calcium in the aragonite structure, at concentrations of about 7500 parts per million, as much as 40 percent of the strontium resides in strontianite (SrCO3). A doublet peak in the Fourier transform of the extended x-ray absorption fine structure of the coral corresponded to six metal and 13 oxygen neighbors surrounding strontium at about 4.05 angstroms in strontium-substituted aragonite and at about 4.21 angstroms in strontianite. Thus, the mechanism of the temperature-sensitive partitioning of strontium between seawater and coral skeleton used for paleothermometry is unexpectedly complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greegor, R B -- Pingitore, N E Jr -- Lytle, F W -- New York, N.Y. -- Science. 1997 Mar 7;275(5305):1452-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Boeing Company, Seattle, WA 98124, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9072808" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/analysis ; Calcium Carbonate/*analysis ; Carbonates/*analysis ; Cnidaria/*chemistry ; Fourier Analysis ; Spectrum Analysis ; Strontium/*analysis ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Polarization-enhanced NMR spectroscopy of biomolecules in frozen solution (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-05-09
    Description: Large dynamic nuclear polarization signal enhancements (up to a factor of 100) were obtained in the solid-state magic-angle spinning nuclear magnetic resonance (NMR) spectra of arginine and the protein T4 lysozyme in frozen glycerol-water solutions with the use of dynamic nuclear polarization. Polarization was transferred from the unpaired electrons of nitroxide free radicals to nuclear spins through microwave irradiation near the electron paramagnetic resonance frequency. This approach may be a generally applicable signal enhancement scheme for the high-resolution solid-state NMR spectroscopy of biomolecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, D A -- Maus, D C -- Gerfen, G J -- Inati, S J -- Becerra, L R -- Dahlquist, F W -- Griffin, R G -- GM-35382/GM/NIGMS NIH HHS/ -- RR-00995/RR/NCRR NIH HHS/ -- RR-05539/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 May 9;276(5314):930-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Francis Bitter Magnet Laboratory and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9139651" target="_blank"〉PubMed〈/a〉
    Keywords: Arginine/*chemistry ; Bacteriophage T4/enzymology ; Cyclic N-Oxides ; Electrons ; Free Radicals ; Freezing ; Magnetic Resonance Spectroscopy/*methods ; Microwaves ; Muramidase/*chemistry ; Solutions ; Spin Labels
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Clean air skepticism (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-10-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lipfert, F W -- New York, N.Y. -- Science. 1997 Oct 3;278(5335):19-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9340746" target="_blank"〉PubMed〈/a〉
    Keywords: Air Pollution/*adverse effects ; Cohort Studies ; Confounding Factors (Epidemiology) ; Humans ; *Mortality ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Attomole protein characterization by capillary electrophoresis-mass spectrometry (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-30
    Description: Electrospray ionization with an ultralow flow rate (〈/=4 nanoliters per minute) was used to directly couple capillary electrophoresis with tandem mass spectrometry for the analysis and identification of biomolecules in mixtures. A Fourier transform mass spectrometer provided full spectra (〉30 kilodaltons) at a resolving power of approximately 60,000 for injections of 0.7 x 10(-18) to 3 x 10(-18) mole of 8- to 29-kilodalton proteins with errors of 〈1 dalton in molecular mass. Using a crude isolate from human blood, a value of 28,780.6 daltons (calculated, 28,780.4 daltons) was measured for carbonic anhydrase, representing 1 percent by weight of the protein in a single red blood cell. Dissociation of molecular ions from 9 x 10(-18) mole of carbonic anhydrase gave nine sequence-specific fragment ions, more data than required for unique retrieval of this enzyme from the protein database.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Valaskovic, G A -- Kelleher, N L -- McLafferty, F W -- 08-T2GM07273/GM/NIGMS NIH HHS/ -- GM16609/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Aug 30;273(5279):1199-202.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703047" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbonic Anhydrases/*analysis/chemistry ; Cattle ; Cytochrome c Group/analysis/chemistry ; Electrophoresis, Capillary/*methods ; Horses ; Humans ; Mass Spectrometry/*methods ; Molecular Weight ; Proteins/*analysis/chemistry ; Sensitivity and Specificity ; Spectroscopy, Fourier Transform Infrared ; Ubiquitins/analysis/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Synaptic efficacy enhanced by glial cells in vitro (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-09-12
    Description: In the developing nervous system, glial cells guide axons to their target areas, but it is unknown whether they help neurons to establish functional synaptic connections. The role of glial cells in synapse formation and function was studied in cultures of purified neurons from the rat central nervous system. In glia-free cultures, retinal ganglion cells formed synapses with normal ultrastructure but displayed little spontaneous synaptic activity and high failure rates in evoked synaptic transmission. In cocultures with neuroglia, the frequency and amplitude of spontaneous postsynaptic currents were potentiated by 70-fold and 5-fold, respectively, and fewer transmission failures occurred. Glial cells increased the action potential-independent quantal release by 12-fold without affecting neuronal survival. Thus, developing neurons in culture form inefficient synapses that require glial signals to become fully functional.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfrieger, F W -- Barres, B A -- New York, N.Y. -- Science. 1997 Sep 12;277(5332):1684-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Stanford University, School of Medicine, Sherman Fairchild Science Building, 299 Campus Drive, Stanford, CA 94305-5125, USA. fpfrieg@mdc-berlin.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9287225" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Astrocytes/physiology ; Cell Survival ; Cells, Cultured ; Coculture Techniques ; Microglia/physiology ; Neuroglia/*physiology ; Oligodendroglia/physiology ; Rats ; Rats, Sprague-Dawley ; Retinal Ganglion Cells/cytology/*physiology/ultrastructure ; Synapses/*physiology/ultrastructure ; *Synaptic Transmission
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Blocked Ras activation in anergic CD4+ T cells (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-03-01
    Description: T cell anergy is a state of functional unresponsiveness characterized by the inability to produce interleukin-2 (IL-2) upon T cell receptor stimulation. The mitogen-activated protein kinases ERK-1 and ERK-2 and the guanosine triphosphate-binding protein p21ras were found to remain unactivated upon stimulation of anergic murine T helper cell 1 clones. The inability to activate the Ras pathway did not result from a defect in association among Shc, Grb-2, and murine Son of Sevenless, nor from a defect in their tyrosine phosphorylation. This block in Ras activation may lead to defective transactivation at activator protein 1 sites in anergic cells and may enable T cells to shut down IL-2 production selectively during anergy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fields, P E -- Gajewski, T F -- Fitch, F W -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1276-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ben May Institute, Department of Pathology, University of Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638108" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD4/immunology ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; *Clonal Anergy ; Clone Cells ; GRB2 Adaptor Protein ; Guanine Nucleotide Exchange Factors ; Guanosine Triphosphate/metabolism ; Interleukin-2/biosynthesis ; Ionomycin/pharmacology ; Lymphocyte Activation ; Mice ; Mitogen-Activated Protein Kinase 1 ; Mitogen-Activated Protein Kinase 3 ; *Mitogen-Activated Protein Kinases ; Protein-Tyrosine Kinases/metabolism ; Proteins/metabolism ; Proto-Oncogene Proteins p21(ras)/*metabolism ; Receptors, Antigen, T-Cell/immunology ; *Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Th1 Cells/*immunology/metabolism ; ras Guanine Nucleotide Exchange Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Structure in Thin and Ultrathin Spin-Cast Polymer Films (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-08-16
    Description: The molecular organization in ultrathin polymer films (thicknesses less than 1000 angstroms) and thin polymer films (thicknesses between 1000 and 10,000 angstroms) may differ substantially from that of bulk polymers, which can lead to important differences in resulting thermophysical properties. Such constrained geometry films have been fabricated from amorphous poly(3-methyl-4-hydroxy styrene) (PMHS) and semicrystalline poly(di-n-hexyl silane) (PD6S) by means of spin-casting. The residual solvent content is substantially greater in ultrathin PMHS films, which suggests a higher glass transition temperature that results from a stronger hydrogen-bonded network as compared with that in thicker films. Crystallization of PD6S is substantially hindered in ultrathin films, in which a critical thickness of 150 angstroms is needed for crystalline morphology to exist and in which the rate of crystallization is initially slow but increases rapidly as the film approaches 500 angstroms in thickness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frank -- Rao V -- Despotopoulou -- Pease -- Hinsberg -- Miller -- Rabolt -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):912-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉C. W. Frank, V. Rao, and M. M. Despotopoulou are in the Department of Chemical Engineering, Stanford University, Stanford, CA 94305-5025, USA. R. F. W. Pease is in the Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA. W. D. Hinsberg, R. D. Miller, and J. F. Rabolt are at the IBM Almaden Research Center, IBM Research Division, 650 Harry Road, San Jose, CA 95120-6099, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688068" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Performance of a light applicator for photodynamic therapy in the oral cavity: calculations and measurements (1997)
    Institute of Physics
    Details
    Publication Date: 1997-09-01
    Print ISSN: 0031-9155
    Electronic ISSN: 1361-6560
    Topics: Biology , Medicine , Physics
    Published by Institute of Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Quantum chaology in semiconductor heterostructures (1996)
    Institute of Physics
    Details
    Publication Date: 1996-01-01
    Print ISSN: 0031-8949
    Electronic ISSN: 1402-4896
    Topics: Physics
    Published by Institute of Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Two-dimensional Turing-like patterns in the PA-MBO-System and effects of an electric field (1996)
    Institute of Physics
    Details
    Publication Date: 1996-01-01
    Print ISSN: 0031-8949
    Electronic ISSN: 1402-4896
    Topics: Physics
    Published by Institute of Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...