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  • 1
    Electronic Resource
    Electronic Resource
    Range profiles of 600–1200 keV Xe+ implanted in KTiOPO4 (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 2104-2108 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: 600–1200 keV Xe+ were implanted into KTiOPO4 (potassium titanyl phosphate) in increments of 100 keV. The depth distributions of implanted Xe+ in KTiOPO4 were measured by Rutherford backscattering. The effects of channeling, temperature, and dose on the depth distribution were briefly investigated. All range distributions were nearly Gaussian. The mean projected range and range straggling obtained were compared with the TRIM'91 code, projected range algorithm (PRAL) and Wang and Shi's (WS) calculation procedure based on Biersack's angular diffusion model. The results show that TRIM'91 systematically underestimates the projected range by approximately 25%, PRAL underestimates the range by approximately 28%, and WS underestimates the range by approximately 7%. All calculate the underestimated range straggling by approximately a factor of two.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357621
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  • 2
    Electronic Resource
    Electronic Resource
    Optimum (Cs,O)/GaAs interface of negative-electron-affinity GaAs photocathodes (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 634-637 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Negative-electron-affinity GaAs photocathodes have been improved by optimizing the (Cs,O)/GaAs interface. An optimum interface can be obtained by annealing the preoxygenated substrate surface at elevated temperatures (∼450 °C) prior to the (Cs,O) activation. Furthermore, the results of experiments with the aid of x-ray photoelectron spectroscopy demonstrate that the direct bonding of oxygen to substrate atoms is most likely the origin of the interfacial barrier to electron escape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346791
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  • 3
    Electronic Resource
    Electronic Resource
    High field magnetic properties in single crystal Nd3Co : The 7th joint MMM-intermag conference on magnetism and magnetic materials (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 6961-6963 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetization as a function of field was measured in pulsed fields of up to 40 T at various temperatures along the principal axes of single crystal Nd3Co. Along the a axis we observed metamagnetic transitions at fields of 1.9 and 4.5 T at 4.2 K. We also observed a sharp increase in the magnetic moment in applied fields between 9.5 and 14 T. Along the b axis a metamagnetic transition was observed at a field of 1.5 T at 4.2 K. Along the c axis we observed ferromagnetic behavior. The H–T (magnetic field and temperature) phase diagram was obtained using a superconducting quantum interference device magnetometer. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367850
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  • 4
    Electronic Resource
    Electronic Resource
    Molecular orientation in laser-induced periodic microstructure on polyimide surface (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 1237-1239 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dichroism of the laser-induced periodic microstructure on a polyimide surface was studied with polarized reflectance infrared spectroscopy. The experimental results show that the polar C(Double Bond)O groups in the polyimide exhibit a greater tendency of orienting in the direction parallel to the microlines while the nonpolar C–C–C linkages between the two benzene rings in the diamine moiety tend to orient in a direction perpendicular to the nanolines. This result indicates that the polyimide molecule chains tend to orient in a direction perpendicular to the nanolines. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.125995
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  • 5
    Electronic Resource
    Electronic Resource
    1,3-Dipolar Cycloaddition of N-Methylazomethine Ylide to C70 (1995)
    s.l. : American Chemical Society
    The @journal of organic chemistry 60 (1995), S. 6496-6498 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00125a040
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  • 6
    Electronic Resource
    Electronic Resource
    Methanofullerenes and Methanofulleroids Have Different Electrochemical Behavior at Negative Potentials (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 1422-1427 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00109a029
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  • 7
    Electronic Resource
    Electronic Resource
    Total Synthesis of (.+-.)-Pyridoxatin (1994)
    s.l. : American Chemical Society
    The @journal of organic chemistry 59 (1994), S. 8065-8070 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00105a024
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of the autophosphorylation of Era, an essential Escherichia coli GTPase (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Molecular microbiology 12 (1994), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Era is an essential protein in Escherichia coli which binds both GTP and GDP and has an intrinsic GTPase activity. Studies on the role of GTP/GDP binding and GTPase activity in an attempt to understand its function lead to the observation that Era is autophosphorylated. The autophosphorylated reaction is specific for GTP and cannot use ATP as a phosphoryl group donor. The reaction velocity is of first order with respect to protein concentration, suggesting an intramolecular mechanism. Autophosphorylation occurs at serine and threonine residues. The major phosphorylated tryptic peptide isolated after autophosphorylation has been identified as ISITSR, from residue 33 to 38. The peptide contains the site of phosphorylation and two potential sites for serine and threonine phosphorylation. Subsequently, both the threonine residue at position 36 and the serine residue at position 37 were altered to alanine. The double mutant Era, but not individual single mutants, was unable to functionally complement the growth of an E. coli strain which cannot produce wild-type Era protein at high temperature. This suggests that either threonine 36 or serine 37 has to exist for the function of Era In vivo. phosphorylation of Era was also examined by two-dimensional gel electrophoresis. Era has been previously assigned two distinct positions having two different X-Y co-ordinates: one of the spots (H032.0) was identified as phosphorylated Era, indicating that a substantial portion of Era in the cell is indeed phosphorylated. Therefore, Era autophosphorylation is likely to play an important physiological role in the cell. The sequence encoding the C-terminus previously published had a missing C between A900 and GgO1. As a resuit of the frameshift, Era consists of 301 residues, 15 fewer than originaiiy reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1994.tb01009.x
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  • 9
    Electronic Resource
    Electronic Resource
    A Dissolvable Intralumental Stent for Sutureless Vascular Anastomasis (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 575-578 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A soluble intralumenal stent for vascular anastomosis was prepared from glucose,Dextran-40 and heparin. The solubility of the stent was tested in vitro and in vivo.Animal tests were carried out with femoral arteries of rabbits. In comparison with theliterature reported surgar and poly(ethylene glycol, PEG) stents, shorter dissolving time and higher patency (or survival) rate were obtained. Cell culture experiments suggested that the heparin containing glucose and Dextran-40 stent (H-sugar) had no irritation and toxicity to the endothelia cells. No thrombosis was observed from the in vivo tests in 2 months after the anastomosis. Such a heparin containing sugar stent is a promising candidate for fast sutureless anastomosis of vessels in non-trauma surgery
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.575.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    The Oriented Growth of C6 Cells on Nanogrooved Surfaces (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 167-170 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Surface topography was believed to be a factor affecting cellular morphology, proliferation, and differentiation. In present work, we examined the facts that nanogrooved surfaces had an effect on the attachment and alignment behavior of C6 cells in detail. The nanogrooves on the surface were fabricated by Laser-induced periodic structures (LIPS) technique (Polarized laser:λ=266nm). The parallel grooves and ridges on the polystyrene were 300-350nm in period and 40-50nm in depth. In addition, we also tried to control cells growth via surface nanostructures on the patterns. And then we evaluated the attachment and alignment of C6 cells on these substrates. After 2 days of incubation, we found that C6 cells were elongated and aligned along patterns of grooves and ridges, whereas were mostly random on smooth substrates. By observing, the response of cells to nano-sized feature suggested that the formation of fibrous cellular components, especially in the filopodium and lamellipodia, were influenced by the nanogrooves. These findings would have potential applications in tissue engineering and in the design of biosensors
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.167.pdf
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