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  • 1
    Electronic Resource
    Electronic Resource
    Carbon dioxide laser photolysis of mixtures of dichlorofluoromethane-h and -d (1983)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 87 (1983), S. 3469-3473 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100241a023
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  • 2
    Electronic Resource
    Electronic Resource
    Lyman-α, Lyman-α coincidence detection in the photodissociation of doubly excited molecular hydrogen into two H(2p) atoms (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 3016-3021 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photodissociation processes of the doubly excited states of H2 into H(2p)+H(2p) have been studied using a coincidence detection of two Lyman-α photons. Coincidence spectra have been measured in the energy region of 29.0–36.0 eV. The intensity of the observed coincidence peak corresponding to two Lyman-α photons increases with increasing energy from its threshold which is about 29 eV. The main precursor of the two H(2p) atoms is assigned to the doubly excited Q2 1Πu state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453943
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  • 3
    Electronic Resource
    Electronic Resource
    Functional and Sensory Properties of Meat Emulsions Produced by using Enzymatically Modified Gelatin (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 52 (1987), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Mettwurst and Bologna sausage were produced from pork using enzymatically modified gelatin (EMG-8), which had been produced with covalent attachment of L-leucine n-octyl ester. EMG-8 improved spreadability, smoothness and softness of the Mettwurst. With the addition of EMG-8, the texture of the Bologna sausage was kept soft over a 1 to 7 day period of storage at 4°C or 2 to 4 weeks of storage at -20°C. Microscopic observation showed that fat globules in the Bologna sausage produced with EMG-8 were more homogeneously distributed than those in a control Bologna sausage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1987.tb14236.x
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  • 4
    Electronic Resource
    Electronic Resource
    Carbon-13 separation by IRMPD of trifluoromethane-d0 and -d1 (1985)
    Springer
    Applied physics 36 (1985), S. 111-113 
    Details
    ISSN: 1432-0649
    Keywords: 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Carbon-13 isotope selectivities and specific decomposition yields in the infrared multiple-photon decomposition of CHF3 and CDF3 were examined as a function of wave number using a CO2 TEA laser. The observed maximum selectivities were 30 for CHF3 and 55 for CDF3. The specific decomposition yields in CDF3 were considerably larger than those in CHF3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694697
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  • 5
    Electronic Resource
    Electronic Resource
    Isotopically selective CVD of silicon by IRMPD of Si2F6 (1988)
    Springer
    Applied physics 47 (1988), S. 243-245 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The IRMPD of Si2F6 by a CO2 TEA laser was applied to isotopically selective CVD of silicon. A white film, probably consisting of polymers of SiF2, was deposited on a metal foil during the irradiation of natural Si2F6 with the laser radiation at 951.19 cm−1 and about 1.5 J cm−2. Upon heating, the film became dark brown, evolving SiF4. The30Si content was found to be as high as about 20%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697344
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  • 6
    Electronic Resource
    Electronic Resource
    First-stage enrichment in CO2-laser-induced13C separation by a two-stage IRMPD process: IRMPD of CHClF2/Br2 mixtures (1989)
    Springer
    Applied physics 48 (1989), S. 427-435 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have been studying the practical CO2-laser-induced13C separation by a two-stage IRMPD process. The IRMPD of natural CHClF2 in the presence of Br2 mainly produced CBr2F2, which was found to be highly enriched with13C. The yield and13C-atom fraction of CBr2F2 were examined as functions of pulse number, laser line, laser fluence, total pressure, and Br2 pressure using a CO2 TEA laser with an output less than 1 J pulse−1 in order to optimize experimental conditions for13C separation. For example, we obtained CBr2F2 at a13C concentration of 55% in the irradiation of the mixture of 100-Torr CHClF2 and 10-Torr Br2 with the laser radiation at a wavenumber of 1045.02 cm−1 and at a fluence of 3.4 J cm−2. The mechanism for the IRMPD is discussed on the basis of observed results. Using 8-J pulses, we were able to obtain 1.9×10−4 g of13C-enriched CBr2F2 (13C-atom fraction, 47%) per pulse under selected conditions. It is possible to produce 90% or higher13C by the second-stage IRMPD of the CBr2F2 in the presence of oxygen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694544
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  • 7
    Electronic Resource
    Electronic Resource
    Infrared emissions in the CO2-laser-induced photolysis of trifluoromethane-d and mixtures of trifluoromethane-d and -h (1983)
    Springer
    Applied physics 32 (1983), S. 85-92 
    Details
    ISSN: 1432-0649
    Keywords: 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Time-resolved infrared emission spectra in the wavelength region of 2–5 μm were measured for the CO2-laser-induced photolysis of trifluoromethane-d (CDF3) and its mixtures with trifluoromethane-h (CHF3). The reactant pressures were 0.1–20 Torr at room temperature; some collisions were expected to occur within the laser-pulse duration. The emissions due to vibrationally excited CDF 3 * (C-D stretching mode and probably combination mode) and DF* were observed at the same time for the irradiation of pure CDF3. DF* should be produced in the unimolecular decomposition of CDF 3 * . The dependences of the DF* emission on the experimental condition are explicable on the assumption that the collisional energy transfer followed by the decomposition of CDF3 plays an important role in the present IRMPD, besides its direct multiple-photon decomposition. The mixture of CDF3 and CHF3 showed the emissions due to HF* and CHF 3 * in addition to DF* and CDF 3 * . The ratio between the DF* and HF* emission intensities,I DF/I HF, was examined as a function of pressure. The pressure dependences were similar to those of the selectivity determined previously from the concentration changes of CDF3 and CHF3. The irradiation of mixtures with a long furation pulse (80 ns fwhm with a 2μs) resulted in a marked decrease inI DF/I HF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688549
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  • 8
    Electronic Resource
    Electronic Resource
    Production of highly concentrated 13C by continuous two-stage IRMPD. CBr2F2/HI, CCl2F2/HI, and CBrClF2/HI mixtures (1989)
    Springer
    Applied physics 49 (1989), S. 503-512 
    Details
    ISSN: 1432-0649
    Keywords: 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Difluoromethane CH2F2 containing 90–98% 13C was obtained in the selective IRMPD of mixtures of CBr2F2/HI, CCl2F2/HI, and CBrClF2/HI. In CBr2F2/HI mixtures, the intermediate product CHBrF2 resulting from the reaction between the initial decomposition fragment CBrF2 and HI underwent secondary selective IRMPD to form highly 13C-enriched CH2F2 in continuous laser irradiation. The intermediate product in the mixtures of CCl2F2/HI and CBrClF2/HI was found to be CHClF2, but no significant secondary photodecomposition in CBrClF2/HI mixtures occurred owing to the low absorption cross section of CHClF2 at the adopted laser frequencies and fluences. The observed decomposition probabilities and selectivities under different conditions with respect to laser frequency, fluence, and partial pressures of halogenated difluoromethanes and HI suggest that CBr2F2 is one of the better candidates for practical 13C separation by IRMPD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324949
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  • 9
    Electronic Resource
    Electronic Resource
    Sporadic lower motor neuron disease with Lewy body-like inclusions: a new subgroup? (1988)
    Springer
    Acta neuropathologica 76 (1988), S. 208-211 
    Details
    ISSN: 1432-0533
    Keywords: Familial amyotrophic lateral sclerosis ; Sporadic lower motor neuron disease ; Lewy body-like inclusions ; Bunina bodies ; Cord-like thickenings of cell processes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A sporadic case of lower motor neuron disease with Lewy body-like inclusions is presented. A woman of 69, 6 months before death, had a history of muscle weakness and atrophy of the four extremities. Neuropathological examination revealed neuronal loss and associated gliosis in the anterior horns of the whole spinal cord. The cytoplasm of some of the remaining neurons contained Lewy body-like inclusions, Bunina bodies, or both. Spheroids and cordlike thickenings of cell processes were also observed in the anterior horns. A few neurons showed argentophilia of the cytoplasm. No tract degeneration was detectable in the white matter of the spinal cord. The present case and two reported similar cases may constitute a new subgroup of motor neuron disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688105
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  • 10
    Electronic Resource
    Electronic Resource
    Mechanism of isotope scrambling for CO2 laser photolysis of trifluoremethane-h and-d mixtures (1981)
    Springer
    Applied physics 25 (1981), S. 1-6 
    Details
    ISSN: 1432-0630
    Keywords: 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The mechanism of isotope scrambling was studied for infrared multiphoton dissociation of trifluoromethane-h (CHF3) and-d (CDF3) mixtures by a CO2 TEA laser. The CO2 laser was tuned to the R(14) line of the 001–100 transition, where CDF3 absorbs the light selectively. Although the highly selective decomposition of CDF3 occurred at low partial pressures of CDF3, significant decomposition of CHF3 was also observed with increasing pressure of CDF3. The selectivity (s) was found to depend only on the pressure of CDF3, a resonant molecule, but not on that of CHF3, an off-resonant molecule. The mechanism involving the formation of two kinds of vibrationally excited molecules, unimolecular decomposition (rate constantk 2 ),V-V energy transfer (k 3b), and collisional deactivation leads to the simple relationship,s=1+(k 2 /k 3b)/[CDF3], which can explain qualitatively the observed results. The ratiok 2 /k 3b has values of 20–200 Torr, probably depending on experimental conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00935383
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