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  • 1
    Electronic Resource
    Electronic Resource
    Solubilities of 2,4-dichloro-1-naphthol in supercritical carbon dioxide
    Amsterdam : Elsevier
    The @Journal of Chemical Thermodynamics 25 (1993), S. 193-196 
    Details
    ISSN: 0021-9614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/jcht.1993.1017
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  • 2
    Electronic Resource
    Electronic Resource
    Preferential Expression of L-type Amino Acid Transporter 1 in Ameloblasts During Rat Tooth Development (2004)
    Berlin, Germany : Blackwell Verlag GmbH
    Anatomia, histologia, embryologia 33 (2004), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Certain amino acid transport systems play an important role in supplying organic nutrients to each cell and for cell proliferation during tooth development. However, the mechanisms responsible for such actions are unclear. This study demonstrated for the first time that LAT1 and 4F2hc are expressed during tooth development in prenatal and postnatal rats, and that the transporters show cell-specific expression in ameloblasts, which are the epithelium-derived dental cells. LAT1 and 4F2hc expression was not observed in other dental cells of the developing teeth such as odontoblasts and cementoblasts. Overall, these results suggest that LAT1 and 4F2hc might play an important role in enamel formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.2003.00524.x
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  • 3
    Electronic Resource
    Electronic Resource
    Complementation of a yeast top2 ts mutation by a cDNA encoding rat DNA topoisomerase IIα (1996)
    Springer
    Molecular genetics and genomics 253 (1996), S. 81-88 
    Details
    ISSN: 1617-4623
    Keywords: Key words Rat ; DNA topoisomerase IIα ; Saccharomyces cerevisiae ; top2ts ; Complementation ; Leucine zipper
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A series of yeast expression plasmids which comprise segments of the cDNA sequences encoding rat topo IIα have been constructed. The transcription of these constructs is under the control of the yeast GAL1 promoter. Galactose-dependent expression of the cloned rat topo IIα cDNA complemented a yeast top2 ts mutation, as well as a deletion mutation at the yeast TOP2 locus. Truncation of 12 N-terminal amino acids and/or 158 C-terminal amino acids of rat topo IIα had no effect on its ability functionally to substitute for top2 ts . Moreover, a cDNA construct with mutated putative leucine zipper domain (amino acids 993–1013) retained the complementation activity. These observations suggest that transformants capable of conditional topo IIα expression can be exploited as a useful model system for studies on the structure-function relationships of wild-type and mutated topo IIα, as well as the interplay of potential antitumor drugs with the enzyme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380050299
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    An Automated CAD System for Progressive Working of Irregular Shaped Metal Products and Lead Frame for Semiconductors (2000)
    Springer
    The international journal of advanced manufacturing technology 16 (2000), S. 624-634 
    Details
    ISSN: 1433-3015
    Keywords: Keywords: Bending and piercing; Knowledged-base rules; Lead frame
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper describes the development of computer-aided design of irregular-shaped sheet metal products and 32LD PLCC lead frames and semiconductors, requiring very precise piercing operations for progressive working. The approach to the CAD system is based on knowledge-based rules. Knowledge for the CAD system is formulated from plasticity theories, experimental results, and the empirical knowledge of field experts. This system has been written in AutoLISP using AutoCAD on a personal computer and the I-DEAS drafting programming language on the I-DEAS master series drafting with an HP 9000/715(64) workstation. Transference of data between Auto-CAD and I-DEAS master series drafting is accomplished using DXF and IGES methods. This system is composed of five main modules, which are input and shape treatment, production feasibility check, strip-layout, data-conversion, and die-layout modules. Based on knowledge-based rules, the system is designed by considering several factors, such as V-notches, dimple, pad chamfer, spank, cavity punch, camber, coined area, cross bow, material and thickness of product, complexities of blank geometry and punch profile, and availability of presses. As forming processes and the die design system using 2D geometry recognition are integrated with the technology of process planning, die design, and CAE analysis, the standardisation of die parts for lead frames requiring a high precision piercing process is possible. The die-layout drawing generated by the die-layout module is displayed in graphic form. Results obtained for each module provide help to the designer and the manufacturer of lead frames for semiconductors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001700070032
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  • 5
    Electronic Resource
    Electronic Resource
    Condensed matter effects on nuclear fusion rates in laboratory and astrophysical environments (1993)
    Springer
    International journal of theoretical physics 32 (1993), S. 1197-1223 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Previously overlooked condensed matter effects (CME) can significantly influence nuclear fusion rates in both laboratory and astrophysical environments. In dense plasmas, the ensemble of fusing particles has a significant exchange of kinetic and potential energies. Thus, there are diminished effective flux velocities resulting in a significant selective reduction of fusion rates. Our CME predictions are testable in laboratory experiments and have broad-ranging implications on the fusion rates for stellar media in general. By calculating reaction rates forp(p, e + v e ) D and7Be(p, γ)8B in the sun, we show that CME help to solve the solar neutrino problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00671799
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  • 6
    Electronic Resource
    Electronic Resource
    Condensed matter effects in the solar neutrino problem (1994)
    Springer
    International journal of theoretical physics 33 (1994), S. 2189-2198 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In addition to our earlier corrections to fusion cross sections, we proposed that previously overlooked condensed matter effects (CME) can help to account for the missing solar neutrino flux. There are three important CME. One is due to a reduction in collision frequency due to an exchange of kinetic and potential energies in collision processes. Another is an excluded volume effect. The third is a shadowing effect due to the presence of spectator species which do not participate in fusion. These CME become appreciable in the high densities encountered in stellar media where they significantly affect fusion rates, since the solar core plasma cannot accurately be described as a collisionless ideal gas. Contrary to Bahcall and Gould (1993), we do not violate Liouville's theorem, the Maxwellian distribution, nor thermodynamics in our proposed solution to the solar neutrino problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00675800
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  • 7
    Electronic Resource
    Electronic Resource
    Physical and Thermodynamic Properties of Aqueous 2-Amino-2-Methyl-1,3-Propanediol Solutions (2000)
    Springer
    International journal of thermophysics 21 (2000), S. 1175-1184 
    Details
    ISSN: 1572-9567
    Keywords: absorption ; AMPD ; carbon dioxide ; density ; solubility ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Densities and viscosities of mixtures of 2-amino-2-methyl-1,3-propanediol (AMPD)–water were measured at temperatures of 30, 40, 50, 60, and 70°C. The solubility of N2O in the aqueous AMPD solutions was measured at temperatures of 30, 40, and 50°C. The concentrations selected for study were 10, 20, and 30 mass% AMPD for all three temperatures. The experimental values for density and viscosity were correlated as functions of temperature. The maximum deviations were less than 0.005% for densities and 0.3% for viscosities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026454206200
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  • 8
    Electronic Resource
    Electronic Resource
    Conventional nuclear physics solution of the solar neutrino problem (1993)
    Springer
    International journal of theoretical physics 32 (1993), S. 301-317 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A basic and inherently simple alternative explanation of the solar neutrino problem is proposed based upon conventional nuclear physics. Our results for the tunneling factor, astrophysicalS-factor, and our resolution are compared with rather speculative solutions commonly attempted by accepting the customary ingredients of the standard solar model. We present a more realistic solution of nuclear Coulomb barrier tunneling together with a more precise parametric representation of the astrophysical functionS. We determineS from high-energy (〉100 keV)7Be(p, γ)8B experimental cross-section data using the new tunneling factor. This leads to a low-energy fusion cross section that is lower than previous estimates by ∼26–36%, decreasing the anticipated neutrino flux close to experimentally detected values. This may resolve the missing solar neutrino flux problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00673718
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  • 9
    Electronic Resource
    Electronic Resource
    Robust diagnostic modeling of the Japan Sea circulation (1995)
    Springer
    Journal of oceanography 51 (1995), S. 421-440 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Japan Sea circulation is numerically modeled with robust diagnostic terms included. The general features are nearly the same as previous prognostic models though small differences appear in local current fields, and agree with most of existing observation results. This model, however, seems to be more successful than prognostic ones in that the overshooting of the East Korean Warm Current, a northward western boundary current, is much reduced and the North Korean Cold Current, a southward western boundary current, is more enhanced. Based on the model results, discussions are made about the large convective structure and the global kinetic energy budget of the Japan Sea circulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02286390
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  • 10
    Electronic Resource
    Electronic Resource
    The generation of coastal undercurrents (1982)
    Springer
    Journal of oceanography 38 (1982), S. 215-224 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Equilibrium conditions in anf-plane ocean evolve as follows after the sudden onset of winds parallel to a coast. At first the flow is two-dimensional-spatial variations are confined to a plane perpendicular to the coast-and the salient features in the forcing region are acceleration of a coastal jet in the surface layers in the wind direction, and offshore Ekman drift that causes coastal upwelling. Kelvin waves excited at the edge of the forced region establish equilibrium conditions by creating an alongshore pressure gradient that balances the wind so that the acceleration stops. The vertical structure corresponding to each vertical mode differs from that of the wind-driven coastal jet so that the arrival of the barotropic Kelvin wave starts to accelerate a coastal undercurrent in a direction opposite to that of the wind. Subsequent baroclinic Kelvin waves modify the vertical structure of the coastal current so that the undercurrent in the subsurface layer is accelerated. In an inviscid model there is a singularity in the surface layers at the coast ast→∞ because the Kelvin modes with small offshore and vertical scales travel slowly and take a very long time to make their contribution to the establishment of equilibrium conditions. A modest amount of friction eliminates this problem. Nonlinearities are important in the heat equation and affect sea surface temperatures significantly but their effect on the momentum balance is secondary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02111104
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