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  • 1
    Electronic Resource
    Electronic Resource
    A theoretical study of thermal reactions of bicyclo[2.1.0]pent-2-ene (1987)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 109 (1987), S. 4157-4162 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00248a005
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  • 2
    Electronic Resource
    Electronic Resource
    ZnSe homoepitaxial layers grown at very low temperature by atmospheric pressure metalorganic vapor-phase epitaxy (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 2728-2733 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: ZnSe homoepitaxial layers with high crystalline quality were grown on (100) ZnSe substrates (grown by the iodine vapor transport method) between 190 and 250 °C. The surface morphologies of homoepitaxial layers (homoepilayers) grown below 250 °C were all mirrorlike. The concentration of self-activated (SA) centers is related to the growth temperature. The band-edge photoluminescence (PL) intensity increases drastically with increasing temperature from 190 up to 210 °C, decreases above 210 °C, and the SA-PL intensity increases monotonically as the growth temperature increases. The mechanism of suppressing the occurrence of SA centers below 250 °C is assumed that the concentration of Zn vacancies diffused from the highly iodine-doped ZnSe substrates into the ZnSe homoepilayers reduces at this temperature region. The SA-PL intensity of the ZnSe homoepilayer with the strongest band-edge emission (grown at 210 °C) is the same or weaker than that of the best ZnSe heteroepitaxial layer (heteroepilayer). Below 200 °C, the FWHM of the ZnSe (400) diffraction is 14 arcsec which is the best value we have ever obtained, though the growth temperature seems to be too low to maintain the crystalline quality. The comparison on the crystalline quality with the ZnSe heteroepilayers is discussed in detail from the viewpoints of the epitaxial growth mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342760
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  • 3
    Electronic Resource
    Electronic Resource
    A plane-grating monochromator for radiometric calibration : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2089-2092 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new plane-grating monochromator and calibration chamber were constructed for the radiometric calibration of plasma diagnostic devices. The monochromator is designed to cover a wavelength range of 1.8–238 nm with moderate resolving power of 500±200 in λ/Δλ. To check the performance of the monochromator, spectral distribution and resolution were measured by experiments on photoemission from solids and photoionization of rare gases. The characterization of multilayer reflectors by the use of this beamline is demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140833
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  • 4
    Electronic Resource
    Electronic Resource
    X-ray optical properties of molybdenum-carbon, molybdenum-silicon, and nickel-carbon multilayers : International conference on synchrotron radiation instrumentation (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2006-2009 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have fabricated multilayer reflectors of molybdenum-carbon, molybdenum-silicon, and nickel-carbon for x rays of 1–200 A(ring) with an electron beam evaporation method in ultrahigh vacuum. The multilayers were deposited on flat and figured substrates of float glass and superpolished glass with a surface roughness of 2–3 A(ring) (rms). The thickness of a layer pair and the number of layer pairs were 30–100 A(ring) and 10–20, respectively. The x-ray characteristics of these multilayer reflectors were evaluated in the 1.5–200 A(ring) region with characteristic x rays (Cu-Kα, Si-Kα, Al-Kα, and C-Kα) and monochromatized synchrotron radiation. Peak reflectivities of molybdenum-carbon were found to be 70% at Cu-Kα and 40% at Al-Kα in grazing incidence and those of molybdenum-silicon to be more than 30% in the 150–170 A(ring) band in near-normal incidence. On the basis of these experimental results, the x-ray optical properties of multilayers are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140861
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  • 5
    Electronic Resource
    Electronic Resource
    Superpolished single-crystal molybdenum mirror for x-ray ultraviolet to x-ray radiation (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1111-1113 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-quality single-crystal molybdenum (Mo) fabricated by a secondary recrystallization method has been polished with a new polishing technique. The superpolished surface of the Mo single crystal has a surface roughness of 3.5 A(ring) rms. This superpolished single-crystal Mo has been used for a high-power electron beam pumped argon excimer laser (λ=126 nm) as a cavity mirror. Peak output power of more than 3 MW has been achieved without any damage to the mirror surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99177
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  • 6
    Electronic Resource
    Electronic Resource
    Blastogenic response and immunoglobulin production by inflamed gingival lymphocytes from dogs (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 23 (1988), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The present study evaluated blastogenic responses and immunoglobulin production (IgG, IgM) by inflamed gingival lymphocytes from dogs. The excised tissues were cut finely, digested in collagenase for 60 min, then passed through a mesh, teased with a 24 G needle several times and centrifuged over a ficoll gradient. Responses to PHA, Con-A and PWM were assessed using peripheral blood lymphocytes (PBLs) and submandibular lymph node cells (SNLs) as controls. Blastogenesis was evaluated from the uptake of 3H-thymidine and the presence of IgG and IgM in culture supernatants was quantified using ELISA. The extraction procedure resulted in a mean 2.09 ± 0.44 × 105 lymphocytes per 100 mg tissue (wet weight). These cells had a mean viability of 84.4 ± 3.0%. The responses of PBLs and SNLs to PHA, Con-A and PWM were substantial, as expected, while the responses of gingival lymphocytes to any mitogen remained at the level of unstimulated lymphocytes. However, gingival lymphocytes produced and secreted IgG and IgM. IgG production by gingival lymphocytes was elevated when compared with those of PBLs and SNLs, while IgM production by gingival lymphocytes was less than PBLs and SNLs. The responses of PBLs and SNLs are not parallel to the response of gingival lymphocytes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1988.tb01425.x
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  • 7
    Electronic Resource
    Electronic Resource
    Seasonal variations in the responses of glycolytic intermediates of human erythrocytes to acute cold exposure (1988)
    Springer
    International journal of biometeorology 32 (1988), S. 52-55 
    Details
    ISSN: 1432-1254
    Keywords: Seasonal variation ; Cold exposure, acute ; Glycolytic intermediates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract Seven male students were studied to observe the effects of acute cold exposure (at 10°C for 60 min) on erythrocyte concentrations of glycolytic intermediates in summer and in winter. The subjects shivered slightly but frankly in both experiments. Significant decreases were observed in the concentrations of pyruvate and lactate during body cooling in summer, but not in winter. The lactate concentration remained significantly reduced 15 min after cold exposure. After 60 min of cold exposure in summer, a negative crossover point appeared to exist between phosphoenolpyruvate and pyruvate and erythrocyte pyruvate kinase activity showed a significant decrease. No seasonal difference was observed in the initial control values of the intermediates measured. From these results and the fact that glucose, pyruvate and lactate are evenly distributed between erythrocytes and plasma, it is likely that erythrocytes and skeletal muscles need less fuel substrate, glucose during cold exposure in winter than in summer, suggesting that an increased economy of energy for homeostasis is achieved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01623995
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  • 8
    Electronic Resource
    Electronic Resource
    A study of zinc distribution in erythrocytes of normal humans (1985)
    Springer
    Annals of hematology 50 (1985), S. 113-116 
    Details
    ISSN: 1432-0584
    Keywords: Zinc ; Erythrocyte ; Carbonic anhydrase isoenzyme ; Cu2Zn2 superoxide dismutase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The assignment of zinc bound to carbonic anhydrase isoenzymes (CA-I and CA-II) and Cu2 Zn2 superoxide dismutase (SOD1) was investigated in the hemolysates from 21 normal male subjects. Sufficient care was taken to remove leukocytes and platelets. The following values of zinc distribution were obtained:total zinc, 1113.8±22.7 (mean±S.E.) μg · 100 ml−1; CA-I-derived zinc, 866.6±26.2 μg · 100 ml−1; CA-II-derived zinc, 99.9±3.9 μg · 100 m−1; SOD1-derived zinc, 60.3±1.9 μg · 100 ml−1; the other zinc, 87.0±12.6 μg · 100 ml−1. Namely, 7.6% of the zinc in human erythrocytes is not bound to the carbonic anhydrases and Cu2Zn2 superoxide dismutase, but present in available form or attached to other enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321175
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  • 9
    Electronic Resource
    Electronic Resource
    Treatment of chronic congenital lactic acidosis by oral administration of dichloroacetate (1986)
    Springer
    Journal of inherited metabolic disease 9 (1986), S. 244-252 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sodium dichloroacetate (DCA) was administered orally at a dose of 50 mg per kg body weight twice or three times per day to a newborn infant with lactic acidosis of unknown cause (patient 1) and to a 15-year-old boy with mitochondrial encephalomyopathy associated with lactic acidosis (patient 2). In patient 1, during treatment with DCA, DCA accumulated in the blood judging from the findings that the urinary excretion of DCA increased cumulatively and the blood lactate level rapidly decreased to the normal range. In patient 2, the blood DCA level gradually increased during treatment to a concentration of 250 µgml−1 and the blood lactate level decreased and was maintained within the normal range. DCA was detected in the brain (25 µg g tissue−1) and the liver, kidney and muscle (33.8, 33.8 and 26.3 µg g tissue−1, respectively) obtained at autopsy of patient 1, and in the cerebrospinal fluid of patient 2 at a concentration of 125 µg ml−1 when the blood concentration was 250 µg ml−1. The lactate levels in the cerebrospinal fluid decreased from 7 and 4mmoll−1 to 2.4 and 2.6 mmoll−1 in patients 1 and 2, respectively. Thus DCA may be useful in clinical treatment of chronic congenital lactic acidosis because it seems to cross the blood-brain barrier. However, it must be given at non-toxic doses, determined by monitoring the concentrations of lactate and DCA in the blood, because orally administered DCA tends to accumulate in tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01799655
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  • 10
    Electronic Resource
    Electronic Resource
    Fine structural aspects of the shift of zonula occludens and cytoorganelles during the inversion of cell polarity in cultured porcine thyroid follicles (1985)
    Springer
    Cell & tissue research 242 (1985), S. 221-224 
    Details
    ISSN: 1432-0878
    Keywords: Thyroid follicle ; Suspension culture ; Cellular polarity ; Tight junctions ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Porcine thyroid follicles, when isolated by enzymatic digestion and suspended in Eagle's MEM containing 10% fetal calf serum, undergo inversion of cellular polarity. After isolation, the strands for the tight junctions (zonulae occludentes) between follicle cells begin to move towards the side of the medium and gather at this side of the lateral plasma membrane during 24 h of incubation. Around this time, microvilli of many follicular cells protrude into the culture-medium. The elements of the Golgi apparatus are located at the luminal as well as the culture-medium side of the cytoplasm, and also at the lateral side of the nucleus after 24 h of suspension culture, and by 94 h of incubation almost all elements of this organelle, as well as lysosomes and the central cilium have migrated to the side of the medium. The migration of the zonulae occludentes is considered to be the initial change in the reversal of the polarity of this cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225580
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