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  • Chemistry  (6)
  • NUCLEAR ENGINEERING  (3)
  • 1970-1974  (6)
  • 1965-1969  (3)
  • 1970  (6)
  • 1969  (3)
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  • 1970-1974  (6)
  • 1965-1969  (3)
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  • 1
    Digitale Medien
    Digitale Medien
    Potential of ceramic materials as permanently implantable skeletal prosthesesPaper presented at Second Materials Engineering and Sciences Conference at the February, 1970, National Meeting of the American Institute of Chemical Engineers, Atlanta, Georgia. (1970)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 4 (1970), S. 433-456 
    Details
    ISSN: 0021-9304
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin , Technik allgemein
    Notizen: The feasibility of the use of porous ceramic materials in the permanent repair of skeletal defects was studied from the standpoint of physiological compatibility and in growth of natural bone. High-fired calcium aluminate samples in the form of quarter-inch diameter cylindrical pellets containing interconnecting porous networks were implanted in vivo into canine femurs for 4-, 11-, and 22-week periods. The implants had 65% porosity with pore size falling within one of five distinct ranges from less than 45 μ to about 200 μ in diameter.Thin sections were prepared by grinding (poly) methyl methacrylate-mounted cross sections of the femurs containing the implanted ceramic samples and adjacent soft tissues. Tissue-prosthetic compatibility was determined using standard histological thin section procedures, electron microbeam probe examinations, autoradiographic techniques, microfadiographic techniques, microchemistry techniques, and ultra-violet fluorescent techniques. Optical microscopic evaluations of each section showed the ceramic samples to be bound lightly by natural bone and gave no detectable signs of tissue incompatibility. Minimum pore size for significant ingrowth of natural bone was indicated to be between 75 and 100 μ.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbm.820040309
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  • 2
    facet.materialart.
    Unbekannt
    Application of nuclear solid-core rockets to interplanetary orbital launch by multiorbit injection (1970)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Nuclear solid core rocket engine performance for interplanetary orbital launch of spacecraft by multiorbit injection
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: AIAA PAPER 69-535 , ; YSICA STATUS SOLIDI|AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE, 5TH, U.S. AIR FORCE ACADEMY; Jun 09, 1969 - Jun 13, 1969; COLORADO SPRINGS, CO
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unbekannt
    Comparison of parallel and tandem staging of nuclear orbital launch stages for interplanetary departure (1970)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Nuclear orbital launch stages for interplanetary departure, comparing parallel and tandem spacecraft configurations
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: AIAA PAPER 70-680 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE, 6TH; Jun 15, 1970 - Jun 19, 1970; SAN DIEGO, CA
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unbekannt
    Application of nuclear solid-core rockets to interplanetary orbital launch by multiorbit injection. (1969)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Nuclear solid core rocket engine performance for interplanetary orbital launch of spacecraft by multiorbit injection
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: AIAA PAPER 69-535 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE; Jun 09, 1969 - Jun 13, 1969; COLORADO SPRINGS, COLO.
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 5
    Digitale Medien
    Digitale Medien
    On the temperature field of a square column embedding a heating cylinder (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 134-138 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An analysis of the two-dimensional temperature field of a square column embedding a heating cylinder is presented. The analysis leads to a solution in finite series which gives rise to rapidly converging numerical results. The series coefficients computed for the extreme case of the cylinder being a line find a way of parametrization, which then furnishes the solutions for finite cylinders up to the case of the cylinder diameter being half of the column thickness. Results in five-digit accuracy are presented. The method is simple and direct. In addition, it retains the same concise formal solution for a variety of boundary conditions.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690160125
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Model simulation of adiabatic continuous flow stirred tank reactors (1969)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 15 (1969), S. 660-665 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Manning, Wolf, and Keairns' model for continuous flow-stirred tank reactors has been extended to include adiabatic as well as isothermal operation. The adiabatic, steady state yield of a continuous flow-stirred tank reactor was measured experimentally using the second-order, homogeneous, exothermic reaction between sodium thiosulfate and hydrogen peroxide. Model predictions of overall tank yield agreed closely with the data, thus verifying the applicability of this model to explain the effects of operating variables such as impeller size, impeller type, agitator speed, feed location, feed concentration, and flow rates.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690150507
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Reduction kinetics of swelling wustite particles (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 326-329 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690160232
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 8
    Digitale Medien
    Digitale Medien
    Errata (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 1108-1110 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: No Absract.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690160644
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 9
    Digitale Medien
    Digitale Medien
    Aging and loss of flocculation activity of aqueous polyacrylamide solutions (1969)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 13 (1969), S. 1023-1036 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: There is a rapid and a slow stage in the decrease of reduced specific viscosity versus time (aging) for a solution of a high intrinsic viscosity polyacrylamide in water. The rapid stage is irreversible and has a fairly high temperature coefficient. Results of the latter type are usually associated with a weak-link scission mechanism, but they can also be reconciled with a disaggregation mechanism. A disaggregation mechanism is also indicated for the rapid stage by an increase in the first-order rate contant with a decrease in the polymer concentration or an increase in the shear rate and by the absence of the rapid stage during the aging of the same sample in formamide. Chemical changes in the polymer are suspected as being responsible for the RSV change during the slow stage in the aging of the high intrinsic viscosity polyacrylamide and also in the aging of a polyacrylamide of low intrinsic viscosity. The aging of the polyacrylamide of high intrinsic viscosity is paralleled by a decrease in the ability of the polymer to increase the subsidence of kaolin suspensions. This decrease in the flocculation activity is attributed to a weakening of the interparticle bridging by a change from a strong adsorption of the bridging polymer to two particles to a strong adsorption of the bridging polymer to one particle but weak adsorption of the bridging polymer to the other particle.
    Zusätzliches Material: 12 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1969.070130517
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