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  • 1
    Electronic Resource
    Electronic Resource
    BN Alternants: Boron Nitride Cages and Polymers (1995)
    s.l. : American Chemical Society
    Inorganic chemistry 34 (1995), S. 1377-1383 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00110a015
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  • 2
    Electronic Resource
    Electronic Resource
    High-spin carbenes (1988)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 110 (1988), S. 3401-3405 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00219a010
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Hueckel rules and electron correlation (1984)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 106 (1984), S. 8050-8056 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00338a008
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  • 4
    Electronic Resource
    Electronic Resource
    Elemental carbon cages (1988)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 110 (1988), S. 1113-1127 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00212a020
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Permutational isomerism with bidentate ligands and other constraints (1978)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 100 (1978), S. 2593-2599 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00477a001
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  • 6
    Electronic Resource
    Electronic Resource
    Treatment of diabetes mellitus (1992)
    Springer
    Diabetologia 35 (1992), S. S8 
    Details
    ISSN: 1432-0428
    Keywords: Diabetes mellitus ; diabetic nephropathy ; immuno-genetics ; immuno-intervention ; sulphonylurea ; glucose ; glucose transport ; blood glucose control ; transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary New treatment strategies for subjects with Type 1 (insulin-dependent) and Type 2 (non-insulin-dependent) diabetes mellitus are being developed. Pilot studies utilising insulin itself have been reported to prevent Type 1 diabetes in subjects likely, by immunogenetic and physiologic criteria, to develop clinically overt disease, while the results of nicoti-namide trials in these subjects remain preliminary. Immunotherapy with cyclosporin A and azathioprine can slow disease progression and may produce long-term remissions when given within two months of onset of clinically overt disease. In subjects with established disease, familial clustering of diabetic nephropathy may be related to concomitant susceptibility to hypertension and elevated rates of Na/H countertransport. Treatment of hypertension associated with the nephropathy appears to slow renal deterioration. Whether reversal of the metabolic consequences of insulin deficiency or resistance also prevents chronic diabetic complications has not been firmly established. In the presence of a reduced Beta-cell mass, moderate hyperglycaemia may itself contribute to decreased muscle glucose uptake but not glycogen synthesis in Type 1 and Type 2 diabetes. Reversal of chronic hyperglycaemia by pancreas and islet cell transplantation, vanadate, and sulphonylureas are discussed as alternate strategies to insulin treatment in establishing normoglycaemia and furthering our understanding of insulin action and secretion at the cellular level. There remains a need to develop more sensitive biochemical and genetic markers to identify subjects at increased risk for developing chronic diabetic complications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00586274
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  • 7
    Electronic Resource
    Electronic Resource
    Mean-field resonating-valence-bond theory for unpaired π-electrons in benzenoid carbon species (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 4735-4748 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A qualitative resonance-theoretic view is presented for the description of a variety of conjugated π-network species identified with "subgraphs" (either finite or infinite) of the graphite network. Within the framework of this resonance theory, simple rules are described to provide qualitative information: On ground-state spin multiplicities; on patterns of ground-state spin density; and on exchange splittings to low-lying "spin-flipped" excited states. Beyond ordinary benzenoid molecules, illustrative applications are noted to a diversity of extended species, including: Differently structured edges on semi-infinite graphite; corner structures where edges along different directions meet; conjugated polymer-strip ends; and local defect vacancy structures in extended graphite. The variety of simple resonance-theoretic predictions are compared against a semiempirical unrestricted Hartree–Fock view of some quantitative tight-binding molecular-orbital-theoretic computations. Agreement in predictions from the resonance- and band-theoretic viewpoints is taken to engender reliability of the so coincident predictions. A traditional organic chemical resonance-theoretic view is thence conveniently reformulated and brought to bear on several extended nano-structured systems to reveal systematic patterns of π-electronic behavior. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1450547
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  • 8
    Electronic Resource
    Electronic Resource
    Ground and excited Hubbard states for buckminsterfullerene with uniform and alternating bond strengths (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 112 (2000), S. 8233-8240 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A detailed investigation on the π-electronic ground and lowest excited g- and u-symmetrical singlet and triplet states of icosahedral C60 is performed in the framework of the semiempirical Hubbard model using single and double excited configuration interaction (SDCI) upon an appropriately chosen reference space constructed out of Hartree–Fock-type molecular orbitals. We present SDCI results for energies, wave-function symmetries, bond orders and spin–spin correlations for these states. For the ground state, second order Møller–Plesset (MP2) and size-consistency corrected energies are presented and compared with Monte Carlo results. We also examine the influence of bond length alternation on the calculated properties. It is shown that within the Hubbard model the lowest excited g and u singlet and triplet states of C60 give very similar overall bond orders and spin–spin correlations. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481477
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  • 9
    Electronic Resource
    Electronic Resource
    Graph Invariants for Fullerenes (1995)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 35 (1995), S. 396-404 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci00025a007
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  • 10
    Electronic Resource
    Electronic Resource
    Real-space renormalization for Heisenberg models on two-dimensional lattices (1994)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 101 (1994), S. 5841-5846 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Real-space renormalization methods which simply shift and rescale the interaction parameters in the nearest-neighbor Heisenberg model are investigated for two-dimensional lattices of equivalent sites. Results are presented for the hexagonal, square-planar, triangular, and Kagome lattices via three different renormalization techniques. The first, which has been studied for some time, uses perturbation theory to evaluate the renormalized interactions. The second uses the variational method to improve on the perturbative results. The third method is based on a cluster expansion and is found to give much improved agreement with numerical results form Monte Carlo calculations, but it does not provide a variational bound to the exact solution. The dependence of all three methods on the size and shape of the renormalized block of sites is also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.467299
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