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  • 1
    Electronic Resource
    Electronic Resource
    Three New Taxane Diterpenoids from Needles and Stems of Taxus cuspidata (1995)
    s.l. : American Chemical Society
    Journal of natural products 58 (1995), S. 233-238 
    Details
    ISSN: 1520-6025
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/np50116a011
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  • 2
    Electronic Resource
    Electronic Resource
    Efficient HPLC Purification of Endohedral Metallofullerenes on a Porphyrin-Silica Stationary Phase (1994)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 116 (1994), S. 9341-9342 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00099a066
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  • 3
    Electronic Resource
    Electronic Resource
    The ¯∂-problem for multipliers of the Sobolev space (1998)
    Springer
    Manuscripta mathematica 97 (1998), S. 217-232 
    Details
    ISSN: 1432-1785
    Keywords: Mathematics Subject Classification (1991):30D50, 31A20, 30H05, 46E15
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract: For , let and be the spaces of multipliers of , the Sobolev space on the unit circle, and , the Dirichlet type space on the open unit disk, respectively. In fact, and are obtained from and by analytic extension. In this paper, we show that if is an -Carleson measure on the open unit disk, then there exists a function f defined on the closed unit disk such that the equation holds on the open unit disk, and such that the boundary value function f belongs to . For applications, we first establish the corona theorem for , which, in the case , gives the answer to a question of L. Brown and A. L. Shields. Secondly, we obtain a geometric characterization of the interpolating sequences for with that extends a theorem of D. E. Marshall and C. Sundberg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002290050098
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  • 4
    Electronic Resource
    Electronic Resource
    Phyletic relationships of protein structures based on spatial preference of residues (1993)
    Springer
    Journal of molecular evolution 36 (1993), S. 67-78 
    Details
    ISSN: 1432-1432
    Keywords: Structure-based scoring matrix MDPRE ; Phyletic relationship of protein structure ; Spatial preference factor ; Sequence alignment ; Protein homology detect ; Globins ; Immunoglobulins ; Cytochromes c ; Serine proteinases ; Dinucleotide-binding domains
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A structure-based scoring matrix MDPRE was derived from amino acid spatial preferences in protein structures. Sequence alignment and evolutionary studies by using MDPRE matrix gave similar results as those from ordinary sequence and structure alignments. It is interesting that a matrix derived from structure data solely could give comparable alignment results, strongly indicating the intimate connection between protein sequences and structures. The branch order and length from this approach were close to those obtained by a structure comparison method. Thus, by applying this structure-based matrix, the trees obtained should reflect evolutionary characteristics of protein structure. This approach takes advantage over a direct structure comparison in that (1) only a sequence and MDPRE matrix are needed, making it simple and widely applicable (especially in the absence of 3-dimensional protein structure data); (2) an established algorithm for sequence alignment and tree building could be employed, providing opportunities for direct comparison between matrices from different methodologies. One of the most striking features of this method is its capability to detect protein structure homologies when the sequence identities are low. This was well reflected in the given examples of the alignment of dinucleotidebinding domains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02407306
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of Bleaching on Dental Hard Tissues: A Raman and IR Spectroscopic Study (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 1405-1408 
    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: The effect of two bleaching materials on dental enamel was studied by vibrationalspectroscopy. Human molar enamel sections parallel to the dentin-enamel junction were one-sidepolished and treated with bleaching agents containing 38% hydrogen peroxide (Opalescence XtraBoost) or 20% carbamide peroxide (Opalescence PF 20%). Then the crystalline structure andmolecular inclusions of the bleached samples were analyzed by Raman scattering and attenuatedtotal reflectance infrared spectroscopy. No spectral difference was observed between theunbleached enamel and that bleached with the two different agents, which indicates no significantoccurrence of structural or chemical changes in enamel apatite due to bleaching
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1405.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Porous Hydroxyapatite Bioceramics Prepared by Polymeric Sponge Impregnation Process (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 1612-1614 
    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: Porous hydroxyapatite bioceramics were obtained by impregnating the polyurethane spongewith rheologically optimized slurry. 6wt% bioglass was doped into hydroxyapatite to act as a sinteringadditive. Thermal analysis was used to study the pyrolysis process of the polyurethane sponge. Phasecomponent and surface morphology were characterized by X-ray diffraction and scanning electronmicroscopy, respectively. It was found that hydroxyapatite was the main phase composition of the porousceramics sintered at 1250°C. The porous bodies prepared had an open, uniform and interconnectedstructure with pore size of 200-400μm. The porous ceramics possessed high porosity of 70-80% andcompressive strength of 2.3MPa. The precipitates formed on the surface of the porous ceramics might bebone-like apatite after immersion in a simulated body fluid for various periods
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1612.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Development of a Control System on 5-Axes Automatic Scanning for Nondestructive Ultrasonic Test (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 552-555 
    Details
    ISSN: 1662-9752
    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 system is developed on a 5-axes automatic scanning for ultrasonic test. It is a systemwith the host-slave and open-loop mode that contains PC and a 5-axes drive card based on singlechip microcomputers. The system drives five stepper motors to carry the detector movingparalleling the normal direction of the detected surface to complete the detect task
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.552.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Ultrafine Oxides during Detonation Expanse at A Fast Quenching Rate (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 324-325 (Nov. 2006), p. 189-192 
    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: Nanostructured spherical lithium manganese oxide (Li-Mn-O) with about 30nm indiameter was synthesized for the first time by explosive method. The water-solubility explosive wasprepared using a simple facility at room temperature. The growth of lithium manganese oxides viadetonation reaction was investigated with respect to the presence of an energetic precursor, such asthe metallic nitrate and the degree of confinement of the explosive charge. The detonation productswere characterized by scanning electron microscopy. Powder X-ray diffraction and transmissionelectron microscopy were used to characterize the products. Lithium manganese oxides withspherical morphology and more uniform secondary particles, with smaller primary particles ofdiameters from 10 to 50 nm and a variety of morphologies were found. Lithium manganese oxideswith a fine spherical morphology different from that of the normal is formed after detonation wavetreatment due to the very high quenching rate. It might also provide a cheap large-scale synthesismethod. Explosive detonation is strongly nonequilibrium processes, generating a short duration ofhigh pressure and high temperature. Free metal atoms are first released with the decomposition ofexplosives, and then theses metal and oxygen atoms are rearranged, coagulated and finallycrystallized into lithium manganese oxides during the expansion of detonation process. Fordetonation of the water-solubility explosive, the detonation pressure, the detonation temperature andthe adiabatic gamma were close to 3 GPa, 2300 K and 3. The inherent short duration, high heatingrate (1010 – 1011 K/s) and high cooling rate (108 – 109 K/s) prevent the lithium manganese oxidescrystallites from growing into larger sizes and induce considerable lattice distortion
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.189.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Low Temperature Explosion for Nanometer Active Materials (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 324-325 (Nov. 2006), p. 193-196 
    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: This paper describes a new method for prediction of the Chapman–Jouguet detonationparameters of CaHbNcOdLieMnf explosives for mixture of some of low temperature explosionexplosives at [removed info]0 = 1000 kg/m3. Explosion temperatures of water-gel explosives and explosiveformulations are predicted using thermochemistry information. The methodology assumes that theheat of detonation of an explosive compound of products compositionH2O–CO2–CO–Li2O–MnO2–Mn2O3 can be approximated as the difference between the heats offormation of the detonation products and that of the explosive, divided by the formula weight of theexplosive. For the calculations in which the first set of decomposition products is assumed,predicted temperatures of explosion of water-gel explosives with the product H2O in the gas phasehave a deviation of 153.29 K from results with the product H2O in the liquid state. Lithium andmanganese oxides have been prepared by the explosion of water-gel explosives of the metal nitrates,M (NO3) x (M = Li, Mn) as oxidizers and glycol as fuels, at relative low temperature. We have alsoused the Dulong-Petit’s values of the specific heat for liquid phase H2O. Lithium manganese oxidepowders with chrysanthemum-like morphology secondary particles, but with smaller primaryparticles of diameters from 5 to 30 nm and a variety of morphologies were found. The oxidesproduced by this cheap method affirmed the validity of explosion synthesis of nano-size materialsfor lithium ion batteries
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.193.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    In Vitro Study on Bleached Enamel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 361-363 (Nov. 2007), p. 833-836 
    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: The surface crystal chemistry of enamel treated with peroxide-based (the commercialproduct Opalescence Xtra Boost as well as aqueous solutions of H2O2) and citric-acid-containingbleaching agents (the commercial product Rapid White as well as aqueous solutions of C6H8O7)were studied by Attenuated Total Reflectance Infrared Spectroscopy and electron-probemicroanalysis. The results show that the treatment with H2O2-based reagents leads to no side effectson the enamel superficial layer, whereas C6H8O7-based agents deteriorate the enamel mineralcomponent. Hence, bleaching with citric-acid-containing products cannot be recommended
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.833.pdf
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