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  • Articles  (26)
  • Engineering General  (20)
  • Male
  • 1990-1994  (15)
  • 1985-1989  (11)
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  • Articles  (26)
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  • 11
    Electronic Resource
    Electronic Resource
    Finite element stream function-vorticity solutions of the incompressible Navier-Stokes equations (1987)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 7 (1987), S. 17-27 
    Details
    ISSN: 0271-2091
    Keywords: Finite Element ; Navier-Stokes Stream ; Function Vorticity ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The incompressible, two-dimensional Navier-Stokes equations are solved by the finite element method (FEM) using a novel stream function/vorticity formulation. The no-slip solid walls boundary condition is applied by taking advantage of the simple implementation of natural boundary conditions in the FEM, eliminating the need for an iterative evaluation of wall vorticity formulae. In addition, with the proper choice of elements, a stable scheme is constructed allowing convergence to be achieved for all Reynolds numbers, from creeping to inviscid flow, without the traditional need for upwinding and its associated false diffusion. Solutions are presented for a variety of geometries.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650070103
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  • 12
    Electronic Resource
    Electronic Resource
    On the computation of weakly separated laminar flows in a smoothly expanding channel (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Communications in Applied Numerical Methods 3 (1987), S. 327-333 
    Details
    ISSN: 0748-8025
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: In Reference 1, a summary of results of numerical solutions to steady-state laminar flows in an expanding planar channel from 15 research groups was presented. Both vorticity and pressure values computed along a wall of the channel were compared. This paper presents some possible explanations for the wide discrepancies in these computed results.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cnm.1630030415
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  • 13
    Electronic Resource
    Electronic Resource
    Direct solution procedure for solution of harmonic problems using complete, non-singular, Trefftz functions (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Communications in Applied Numerical Methods 5 (1989), S. 159-169 
    Details
    ISSN: 0748-8025
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: Boundary approximation solutions using a singular Green function basis have been widely applied to the solution of a variety of linear problems. To avoid the difficulties associated with integration over singularities it is convenient to use sets of non-singular, complete Trefftz functions, and this procedure has been applied recently with success using an indirect formulation. In the paper we observe that direct formulation is here again possible and that for some problems it performs in a superior way.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cnm.1630050304
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  • 14
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    Structure and function of lipopolysaccharide binding protein (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-21
    Description: The primary structure of lipopolysaccharide binding protein (LBP), a trace plasma protein that binds to the lipid A moiety of bacterial lipopolysaccharides (LPSs), was deduced by sequencing cloned complementary DNA. LBP shares sequence identity with another LPS binding protein found in granulocytes, bactericidal/permeability-increasing protein, and with cholesterol ester transport protein of the plasma. LBP may control the response to LPS under physiologic conditions by forming high-affinity complexes with LPS that bind to monocytes and macrophages, which then secrete tumor necrosis factor. The identification of this pathway for LPS-induced monocyte stimulation may aid in the development of treatments for diseases in which Gram-negative sepsis or endotoxemia are involved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schumann, R R -- Leong, S R -- Flaggs, G W -- Gray, P W -- Wright, S D -- Mathison, J C -- Tobias, P S -- Ulevitch, R J -- AI 15136/AI/NIAID NIH HHS/ -- AI 25563/AI/NIAID NIH HHS/ -- GM 28485/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Sep 21;249(4975):1429-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Research Institute of Scripps Clinic, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2402637" target="_blank"〉PubMed〈/a〉
    Keywords: *Acute-Phase Proteins ; Amino Acid Sequence ; Animals ; Base Sequence ; Blood Proteins/*genetics ; Carrier Proteins/*genetics/metabolism ; Gene Library ; Humans ; Kinetics ; Lipid A/metabolism ; Lipopolysaccharides/*metabolism/pharmacology ; Male ; *Membrane Glycoproteins ; Molecular Sequence Data ; Oligonucleotide Probes ; Rabbits ; Sequence Homology, Nucleic Acid ; Sheep ; Staphylococcus aureus ; Tumor Necrosis Factor-alpha/biosynthesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Gene dose of apolipoprotein E type 4 allele and the risk of Alzheimer's disease in late onset families (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-13
    Description: The apolipoprotein E type 4 allele (APOE-epsilon 4) is genetically associated with the common late onset familial and sporadic forms of Alzheimer's disease (AD). Risk for AD increased from 20% to 90% and mean age at onset decreased from 84 to 68 years with increasing number of APOE-epsilon 4 alleles in 42 families with late onset AD. Thus APOE-epsilon 4 gene dose is a major risk factor for late onset AD and, in these families, homozygosity for APOE-epsilon 4 was virtually sufficient to cause AD by age 80.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corder, E H -- Saunders, A M -- Strittmatter, W J -- Schmechel, D E -- Gaskell, P C -- Small, G W -- Roses, A D -- Haines, J L -- Pericak-Vance, M A -- New York, N.Y. -- Science. 1993 Aug 13;261(5123):921-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Joseph and Kathleen Bryan Alzheimer's Disease Research Center, Duke University Medical Center, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8346443" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Aging ; *Alleles ; Alzheimer Disease/*genetics/metabolism/mortality ; Amyloid beta-Peptides/metabolism ; Apolipoprotein E4 ; Apolipoproteins E/*genetics/physiology ; Female ; *Gene Frequency ; Genotype ; Homozygote ; Humans ; Linkage Disequilibrium ; Male ; Risk Factors ; Survival Rate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Physical mapping of a translocation breakpoint in neurofibromatosis (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-02
    Description: The gene for von Recklinghausen neurofibromatosis (NF1), one of the most common autosomal-dominant disorders of humans, was recently mapped to chromosome 17 by linkage analysis. The identification of two NF1 patients with balanced translocations that involved chromosome 17q11.2 suggests that the disease can arise by gross rearrangement of the NF1 locus, and that the NF1 gene might be identified by cloning the region around these translocation breakpoints. To further define the region of these translocations, a series of chromosome 17 Not I-linking clones has been mapped to proximal 17q and studied by pulsed-field gel electrophoresis. One clone, 17L1 (D17S133), clearly identifies the breakpoint in an NF1 patient with a t(1;17) translocation. A 2.3-megabase pulsed-field map of this region was constructed and indicates that the NF1 breakpoint is only 10 to 240 kilobases away from 17L1. This finding prepares the way for the cloning of NF1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fountain, J W -- Wallace, M R -- Bruce, M A -- Seizinger, B R -- Menon, A G -- Gusella, J F -- Michels, V V -- Schmidt, M A -- Dewald, G W -- Collins, F S -- NS22224/NS/NINDS NIH HHS/ -- NS23410/NS/NINDS NIH HHS/ -- NS23427/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1989 Jun 2;244(4908):1085-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Michigan, Ann Arbor 48109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2543076" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosome Mapping ; *Chromosomes, Human, Pair 17 ; Cloning, Molecular ; DNA Restriction Enzymes ; Electrophoresis ; Female ; Genetic Linkage ; Humans ; Hybrid Cells ; Male ; Neurofibromatosis 1/*genetics ; *Translocation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    An all D-amino acid opioid peptide with central analgesic activity from a combinatorial library (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: A synthetic combinatorial library containing 52,128,400 D-amino acid hexapeptides was used to identify a ligand for the mu opioid receptor. The peptide, Ac-rfwink-NH2, bears no resemblance to any known opioid peptide. Simulations using molecular dynamics, however, showed that three amino acid moieties have the same spatial orientation as the corresponding pharmacophoric groups of the opioid peptide PLO17. Ac-rfwink-NH2 was shown to be a potent agonist at the mu receptor and induced long-lasting analgesia in mice. Analgesia produced by intraperitoneally administered Ac-rfwink-NH2 was blocked by intracerebroventricular administration of naloxone, demonstrating that this peptide may cross the blood-brain barrier.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dooley, C T -- Chung, N N -- Wilkes, B C -- Schiller, P W -- Bidlack, J M -- Pasternak, G W -- Houghten, R A -- DA-000138/DA/NIDA NIH HHS/ -- DA-02615/DA/NIDA NIH HHS/ -- DA-03742/DA/NIDA NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):2019-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Torrey Pines Institute for Molecular Studies, San Diego, CA 92121.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801131" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Analgesics/chemistry/metabolism/*pharmacology ; Animals ; Brain/metabolism ; Dose-Response Relationship, Drug ; Endorphins/pharmacology ; Enkephalin, Ala(2)-MePhe(4)-Gly(5)- ; Enkephalin, D-Penicillamine (2,5)- ; Enkephalins/metabolism ; Guinea Pigs ; Injections, Intraventricular ; Male ; Mice ; Models, Molecular ; Molecular Sequence Data ; Naloxone/administration & dosage/pharmacology ; Opioid Peptides/chemistry/metabolism/*pharmacology ; Pain Measurement ; Protein Conformation ; Rats ; Receptors, Opioid, mu/agonists/metabolism ; Stereoisomerism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Long-term neuropathological and neurochemical effects of nucleus basalis lesions in the rat (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-11-13
    Description: The long-term effects of excitotoxic lesions in the nucleus basalis magnocellularis of the rat were found to mimic several neuropathological and chemical changes associated with Alzheimer's disease. Neuritic plaque-like structures, neurofibrillary changes, and neuronal atrophy or loss were observed in the frontoparietal cortex, hippocampus, amygdala, and entorhinal cortex 14 months after the lesions were made. Cholinergic markers in neocortex were reduced, while catecholamine and indoleamine metabolism was largely unaffected at this time. Bilateral lesions of the nucleus basalis magnocellularis increased somatostatin and neuropeptide Y in the cortex of the rat by at least 138 and 284 percent, respectively, suggesting a functional interaction between cholinergic and peptidergic neurons that may differ from that in Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arendash, G W -- Millard, W J -- Dunn, A J -- Meyer, E M -- HD 17933/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1987 Nov 13;238(4829):952-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of South Florida, Tampa 33620.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2890210" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholinesterase/metabolism ; Animals ; Biogenic Amines/metabolism ; Brain/metabolism/*pathology ; Cerebral Cortex/metabolism/*pathology ; Choline/metabolism ; Choline O-Acetyltransferase/metabolism ; Male ; Neuropeptide Y/analysis ; Olivary Nucleus/*physiology ; Organ Specificity ; Rats ; Rats, Inbred Strains ; Somatostatin/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    A model-based estimate of the mean incubation period for AIDS in homosexual men (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-06-03
    Description: Because of the difficulty in identifying the date of exposure to type 1 of the human immunodeficiency virus (HIV-1) infection in persons other than transfusion recipients, studies of the incubation periods for acquired immunodeficiency syndrome (AIDS) have been limited. When data from a cohort of 84 homosexual and bisexual men that provided the information to determine the years of conversion of sera infected with HIV-1 were analyzed, a model for the proportion likely to develop AIDS and the incubation period for AIDS in homosexual men could be derived. The maximum likelihood estimate for the proportion of infected homosexual men developing AIDS is 0.99 (90% confidence interval ranging from 0.38 to 1). Furthermore, the maximum likelihood estimate for the mean incubation period for AIDS in homosexual men is 7.8 years (90% confidence interval ranging from 4.2 years to 15.0 years), which is close to the estimate of 8.2 years for adults developing transfusion-associated AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lui, K J -- Darrow, W W -- Rutherford, G W 3rd -- New York, N.Y. -- Science. 1988 Jun 3;240(4857):1333-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Injury Epidemiology and Control, Centers for Disease Control, Atlanta, GA 30333.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3163848" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/etiology/immunology/*physiopathology ; Antibodies, Viral/analysis ; Blood Transfusion ; Enzyme-Linked Immunosorbent Assay ; HIV/physiology ; HIV Antibodies ; HIV Seropositivity ; *Homosexuality ; Humans ; Immunoassay ; Male ; Mathematics ; *Models, Biological ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 20
    Electronic Resource
    Electronic Resource
    Analysis of stress and strain distributions in slab rolling using an elastic-plastic finite-element method (1988)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 25 (1988), S. 55-66 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The cold rolling of rectangular section slabs is analysed for a range of width-to-height ratios (one to three) for which spread of the workpiece is appreciable. This necessitates the use of a three-dimensional model. An elastic-plastic finite-element method is used to provide a complete description of the slab rolling process.The pressure distribution at the workpiece/roll interface is found to show the typical ‘friction-hill’ observed in near-plane-strain experiments, but the pressure varies across the width of the interface. The shear-stress distribution at the roll interface provides detailed information about the ‘neutral line’ which is usually assumed to occur where the shear stress changes direction. The 3-D analysis shows clearly that there is a flow divide in both longitudinal and transverse directions.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620250107
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