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  • 1
    Electronic Resource
    Electronic Resource
    In vitro biocompatibility, mechanical properties, and corrosion resistance of Ti—Zr—Nb—Ta—Pd and Ti—Sn—Nb—Ta—Pd alloys (1995)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 29 (1995), S. 893-899 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: There is much discussion about the toxic effect of vanadium and aluminum contained in Ti—6Al—4V alloy for prosthetic implants. The goal of the present investigation was to develop new titanium alloys with sufficient mechanical properties using more biocompatible alloying elements: zirconium, tin, niobium, tantalum, and palladium. The relative growth rates of L929 and MC3T3-E1 cells were significantly higher when cultured with the extraction of Ti—10Zr—8Nb—2Ta—0.2Pd or Ti—15Zr—4Nb—2Ta—0.2Pd alloys than when cultured with the extraction of Ti—6Al—4V ELI alloy. The tensile strength, elongation, and reduction of area for Ti—15Sn—4Nb—2Ta—0.2Pd alloy were 989 MPa, 14.4%, and 49.3%, respectively, surpassing Ti—6Al—4V ELI alloy (ASTM F138—84); those for Ti—15Zr—4Nb—2Ta—0.2Pd alloy were 725 MPa, 23.6% and 54.9%, respectively. More than 15% addition of tin as well as zirconium deteriorated the tensile properties. Titanium release into a 5% hydrochloric acid solution from the new titanium alloys was 20-50 μg/cm2 per day, though that from Ti—6Al—4V ELI alloy was 1300 μg/cm2 per day. The optimum alloy compositions are Ti—15Zr—4Nb—2Ta—0.2Pd and Ti—15Sn—4Nb—2Ta—0.2Pd, judging from cytocompatibility, corrosion resistance, and mechanical properties. The former is characterized by its high level cytocompatibility and corrosion resistance, while the latter is characterized by mechanical properties. © 1995 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820290715
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  • 2
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    Climate-driven hydrologic transients in Holocene lake records (2021)
    In:  http://aquaticcommons.org/id/eprint/15813 | 8 | 2014-12-09 00:17:41 | 15813
    Details
    Publication Date: 2021-07-10
    Description: Understanding the link between climate and regional hydrologic processes is of primary importance in estimating the possible impact of future climate change and in the validation of climate models that attempt to simulate such changes. Two distinct problems need to be addressed: quantitatively establishing the link between changes in climate and the hydrologic cycle, and determining how these changes are expressed over differing temporal and spatial scales. To solve these problems, our interdisciplinary group is studying important aspects of hydrology, paleolimnology, geochemistry, and paleontology as they apply to climate-driven hydrologic changes.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Limnology ; PACLIM ; hydrology
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 211-215
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  • 3
    Electronic Resource
    Electronic Resource
    Development of circulating fluidized bed adsorber (1990)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 36 (1990), S. 1003-1010 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A new fludized bed which is divided in a looplike shape by a partition wall has been developed for recovering trace elements from a large quantity of industrial water. The bed, a circulating fluidized bed applicable to a liquid-solid two-phase flow, is called a circulating fluidized bed absorber (CFBA). Adsorbent particles are mixed and carried along with water in the CFBA. At the upper part of the bed, the absorbent particles are separated from the water flow and recycled in the bed; the depleted water flows out of a water outlet. The CFBA is operated at two to three times higher velocity than conventional liquid-solid contacting systems. The pressure drop in the CFBA is in proportion to the amount of adsorbent suspended in the contacting section. Characteristics of the CFBA, including design considerations, are described.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690360705
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  • 4
    Electronic Resource
    Electronic Resource
    Uranium adsorption characteristics of a circulating fluidized-bed adsorber (1992)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 38 (1992), S. 879-886 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A new type of fluidized bed, called a circulating fluidized-bed adsorber (CFBA), was developed for processing a large quantity of water with high efficiency. Its fluid mechanical characteristics are reported, as well as recovery of uranium from natural seawater using a small CFBA. Using hydrous titanium oxide, granulated with polyacrylonitrile (PAN-HTO), as an adsorbent, CFBA ran stably for six days, the period required for the adsorbent to collect a practical amount of uranium. To predict the uranium adsorption performance of a plant-size CFBA, a numerical model simulating the adsorption kinetics was developed. The result of the numerical calculation by the model was in good agreement with the experimental data.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690380609
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  • 5
    Electronic Resource
    Electronic Resource
    Computer-Aided Materials Design for semiconductors (1993)
    Weinheim : Wiley-Blackwell
    Advanced Materials 5 (1993), S. 198-206 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Computer-aided materials design for semiconductors is reviewed. Reliable predictions are possible for a wide range of problems, such as the behavior of various heterovalent atomic species in III-V semiconductors, including C (conduction type), Si (DX-center), Ge (GaAs/Ge superlattices), S, Se and Te (passivation of GaAs surfaces), by using such computer-aided calculation techniques as pseudopotential methods.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19930050308
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  • 6
    Electronic Resource
    Electronic Resource
    Third-order nonlinear optical properties of thin films of organogermane homopolymers and organogermane-organosilane copolymers*This work was partly supported by the Ministry of Education, Science and Culture (Grant-in-Aid for Scientific Research on Priority Area of Reactive Organometallics). (1995)
    Weinheim : Wiley-Blackwell
    Advanced Materials 7 (1995), S. 917-919 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19950071110
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  • 7
    Electronic Resource
    Electronic Resource
    Measurement of the flow of thermosetting molding compoundResearches on the flow of polymeric substances by means of extrusion rheometer: 4th report. (1959)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 2 (1959), S. 322-327 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The extrusion rheometer, suggested by the author, is used for the relative measurement of the flow of thermosetting molding compounds in a curing process which is more complicated and difficult to measure than that of thermoplastics. Allyl polyester molding compound, which contains asbestos as a filler in the amount of 50% and Luperco ATC as a catalyzer in the amount of 4%, is used as a test sample of the thermosetting compound. Because the unsaturated polyester which is used as a resin in the test sample of the thermosetting compound contains diallyl phthalate monomer, which acts as a crosslinking component in the radical polymerization reaction, there is no volatile by-product in the curing reaction. Therefore, breathing during the molding of this test sample is not needed, and this allyl polyester molding compound is considered to be most suitable to use as the test sample of the thermosetting molding compound. Several factors which exert an influence on the flow of the thermosetting compound in the curing process are investigated, and recommended testing conditions are determined. Although the flow curve of the thermosetting molding compound in the extrusion rheometer is not as simple as that of thermoplastics, the flow characteristics of the thermosetting molding compound can be evaluated and compared by the factors Rf, vf, fts, and fte, which are obtained from the flow curve. As an example, the influences of time-aging effect and various fillers on the flow of the thermosetting molding compound are examined by the above method.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1959.070020611
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  • 8
    Electronic Resource
    Electronic Resource
    Serum-free cell culture on insulin-immobilized porous collagen beads (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 45 (1995), S. 144-148 
    Details
    ISSN: 0006-3592
    Keywords: serum-free cell culture ; cell adhesion ; cell growth ; fibroblast cell ; biosignal ; immobilization ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Insulin or albumin was immobilized on collagen beads using water-soluble carbodiimide. Adhesion of STO mouse fibroblast cells onto the beads decreased with increasing the amount of immobilized proteins. Growth of the cells was remarkably accelerated on the insulinimmobilized collagen beads, which can be used for serum-free cell culture. The growth acceleration became larger with increasing the amount of immobilized insulin, while it became smaller with increasing the amount of immobilized albumin. In addition, the immobilized insulin more strongly accelerated the cell growth than free insulin plus collagen beads. © 1995 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260450208
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  • 9
    Electronic Resource
    Electronic Resource
    Cell growth on immobilized cell growth factor. 8. Protein-free cell culture on insulin-immobilized microcarriers (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 40 (1992), S. 1271-1276 
    Details
    ISSN: 0006-3592
    Keywords: protein-free cell culture ; immobilized growth factor ; microcarrier ; animal cell culture ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In order to develop a new protein-free cell culture system, microcarriers immobilized with insulin were synthesized. For the synthesis, glass and polyacrylamide beads were treated for the introduction of amino groups on the surface, and insulin was immobilized on the surface by using several method. Anchorage-dependent cells. mouse fibroblast cells STO and fibroic sarcoma cells HSDM1C1, and the anchorage-independent cells, mouse hybridoma cells SJK132-20 and RDP 45/20 were cultivated on the microcarriers immobilized with insulin. The insulin-immobilized microcarriers did not have any effect on the proliferation of the anchorage independent cells but promoted the growth of anchorage-dependent cells remarkably. The activity of immobilized insulin was larger than that of free or adsorbed insulin. The repeated use of the insulin-immobilized microcarrier was possible, and the promotion activity in the the repeated use was greater than that in the use. © 1992 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260401017
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  • 10
    Electronic Resource
    Electronic Resource
    Regulation of growth and adhesion of cultured cells by insulin conjugated with thermoresponsive polymers (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 53 (1997), S. 339-344 
    Details
    ISSN: 0006-3592
    Keywords: cell culture ; tissue engineering ; thermoresponsive polymer ; cell adhesion ; insulin conjugate ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: We developed a new biomaterial for use in cell culture. The biomaterial enabled protein-free cell culture and the recovery of viable cells by lowering the temperature without the aid of supplements. Insulin was immobilized and a thermoresponsive polymer was grafted onto a substrate. We investigated the effect of insulin coupling on the lower critical solution temperature (LCST) of the thermoresponsive polymer, poly(N-isopropylacrylamide-co-acrylic acid), using polymers that were ungrafted, or coupled with insulin. The insulin conjugates were precipitated from an aqueous solution at high temperatures, but they were soluble at low temperatures. The LCST was not significantly affected by the insulin coupling. The thermoresponsive polymer was grafted to glow-discharged polystyrene film and covalently conjugated with insulin. The surface wettability of the conjugate film was high at low temperatures and low at high temperatures. The amounts of immobilized insulin required to stimulate cell growth were 1-10% of the amount of free insulin required to produce the same effect. The maximal mitogenic effect of immobilized insulin was greater than that of free insulin. About half of the viable cells was detached from the film only by lowering the temperature. The recovered cells proliferated normally on new culture dishes. © 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 53: 339-344, 1997.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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