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  • 1
    Electronic Resource
    Electronic Resource
    The perception of moving comets at high retinal illuminance levels: A rod-cone interaction effect (1986)
    Springer
    Biological cybernetics 55 (1986), S. 145-158 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract A small circular target of high retinal illuminance level can have a comet-like appearance when presented moving continuously with a speed as low as 0.2 deg/s. This perceived lengthening of the circular target increases with the speed of movement and is only observed for target presentations outside the foveal region. Data on the parametric properties of the “comet effect” are presented together with related results on the time-course of recovery of retinal sensitivity following brief exposure to intense stimuli. Measurement of target spectral irradiance levels which are just sufficient to yield the comet effect suggests that the lengthening of the circular target reflects a rodcone interaction and therefore it may be due to unsuppressed, saturated rod responses at high retinal illuminance levels. The restriction of the comet effect to areas outside the foveal region is used to produce spatial maps of what appears to be the rod-free area of the retina. A model simulation by means of a computational approach shows that the predicted appearance of the moving target matches very closely the experimental observations on the comet effect. Model predictions based on psychophysical estimates of comet length for the stimulus conditions of these experiments yield an overall response time for the rod system of some 600 ms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341930
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  • 2
    Electronic Resource
    Electronic Resource
    Gastric inhibitory effects of CM57755 (1986)
    Springer
    European journal of clinical pharmacology 30 (1986), S. 33-36 
    Details
    ISSN: 1432-1041
    Keywords: CM57755 ; histamin H2-receptor antagonist ; gastric acid secretion ; pepsin secretion ; healthy volunteer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The gastric inhibitory effects of CM57755, a new histamine H2 receptor antagonist, have been compared in ten healthy male volunteers with the actions of an equal dose of cimetidine and with placebo. The inhibitory effect of CM57755 was virtually identical with, and not significantly different from the effects of cimetidine on nocturnal gastric secretion of acid, while neither drug influenced the secretion of pepsin. Neither drug, administered in the evening, influenced the intragastric pH and acidity during the following day, from breakfast onwards. The therapeutic impact of the new drug is likely to resemble that of cimetidine and clinical application will depend on the safety profile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614192
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  • 3
    Electronic Resource
    Electronic Resource
    GRASSLAND RECORDING—AN AID TO MANAGEMENT (1962)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 17 (1962), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Grassland recording provides not only a method of measuring output on individual tields but also a means of gaining information about the value of management techniques as they arc applied on the commercial farm, and is helping in the interpretation of the results of field experiments on grassland problems. Responses to nitrogen, phosphate and potash have been demonstrated with the technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1962.tb00283.x
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of dosage at the soft starch (h) locus on starch granule volume in maize (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Larger particle volume is beneficial for many aspects of maize starch processing, and may improve the performance of some starch attributes. Of the numerous endosperm carbohydrate mutants, the soft starch (h) mutant appears to have the greatest influence on starch particle volume. The objective of this study was to determine the gene dosage effect upon starch particle volume at the h locus. Two inbreds, B37 and Oh43, were studied in 1992 and 1993, and their hybrid B37 × Oh43 was studied in 1993. Appropriate crosses were made to establish four endosperm genotypes ++/+, ++/h, hh/+ and hh/h. Starch was extracted from mature kernels collected for each endosperm genotype and analysed for particle volume. The source of variation attributable to fitting two straight regression lines on number of h alleles was highly significant (P 〈 0.01) in all experiments, resulting in a horizontal-line relationship among the three normal genotypes (++/+,++/h and hh/+) at 14.452 μm33 and a regression line of slope 1.622 μm3 passing from hh+ to hh/h. There is no dosage effect of starch particle volume at the h locus; complete recessiveness of the h allele for starch particle volume is the same as the visual phenotypic observation of soft starch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00480.x
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  • 5
    Electronic Resource
    Electronic Resource
    Genetic effects of the soft starch (h) and background loci on volume of starch granules in five inbreds of maize (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Larger particle volume is beneficial for many aspects of maize starch processing, and may improve the performance of some starch attributes. This study focused on the soft starch (h) locus to identify its potentially influential role in starch particle volume distribution. The objectives were to study the genetic expression of starch particle volume of the h locus in different genetic backgrounds and the gene action conditioning starch particle volume of other loci in both normal-starch and h-starch backgrounds. Forty-five populations (five intra-inbred F1s, 10 hybrid F1s 10 F2s, 10 BC1F1s to h/h parent, and 10 BC1 to h:h conversion of normal parent) were planted in 1993 at two locations and in 1995 at one location. Selfed heterozygotes (±/h) in all generations provided intra-ear comparisons of normal and h starch, and F3 and BC1F2 generations provided inter-ear comparisons. Significant differences were found between normal and h:h genotypes in all intra-ear and inter-ear comparisons. In all cases, general combining ability effects were highly significant, suggesting the presence of additive gene effects. Generation mean analysis of normal and h:h starch materials yielded similar results, indicating the predominance of additive and some dominance effects for other loci on starch particle volume. These results indicate the usefulness of the soft starch gene and additional genetic variation among inbreds in the improvement of starch particle volume for increased starch recovery in wet milling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00479.x
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  • 6
    Electronic Resource
    Electronic Resource
    Electroreflectance study of the temperature dependence of the E1 transition of Hg0.65Cd0.35Te (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 5528-5531 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated the temperature dependence of the E1 optical feature (energy and broadening parameter) of Hg0.65Cd0.35Te using electroreflectance in the metal-insulator-semiconductor configuration. Measurements were made in the temperature range 77–293 K. The observed variation can be fit by either a linear dependence or the empirical Varshni relation [Y.P. Varshni, Physica (Utrecht) 39, 149 (1967)] within experimental error. The obtained linear temperature coefficient for E1 is compared with previous results. The temperature dependence of the broadening parameter also is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343655
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  • 7
    Electronic Resource
    Electronic Resource
    Deep electron traps near the passivated interface of HgCdTe (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 58 (1985), S. 2208-2211 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron traps in bulk n-type Hg0.7Cd0.3Te were investigated near the HgCdTe/SiO2 interface by use of deep level transient spectroscopy on metal-insulator-semiconductor structures [D. V. Lang, J. Appl. Phys. 45, 3022 (1974)]. Three electron traps are found with activation energies (relative to the conduction band edge) of 0.12, 0.172, and 0.079 eV, and corresponding capture cross sections of 3.5×10−18, 1.1×10−16, and 1.2×10−18 cm2. Depth profiles from the surface to ∼1.0 μm show the concentration of the 0.172-eV trap to be uniform while the 0.12-eV trap shows a strong depth dependence. It is undetectable at the surface, rising in concentration to twice its bulk value at ∼0.5 μm depth then falling to a value comparable with that of the 0.172-eV trap in the bulk (1 μm). Divalent trapping behavior has also been detected. In this case, the deeper state significantly depopulates, enabling a shallower state to then depopulate [J. S. Blakemore, Semiconductor Statistics (Pergamon, London, 1962), p. 156].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336304
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  • 8
    Electronic Resource
    Electronic Resource
    Low-frequency admittance measurements on the HgCdTe/Photox SiO2 interface (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 1238-1244 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The complex admittance of an n-type Hg1−xCdxTe/Photox SiO2 interface with x=0.3 has been examined for frequencies ranging between 1 mHz and 4 MHz. The conductance method is used to decompose the total interface state density into three types of components: a valence-band tail, a conduction-band tail, and some well-resolved discrete states. The fixed charge density is low and there is no statistical broadening. The surface valence- and conduction-band edges are both found to be shifted upward in energy relative to their respective bulk values; moreover, the surface has converted to p type. The energy variation of the valence-band tail states response times follows a pattern characteristic of Shockley–Read recombination centers with a constant capture cross section, but the behavior of the conduction-band tail states is more complicated. Evidence is presented that the interface region has a higher Cd concentration than the bulk.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336511
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of H2O on the SiO2-HgCdTe interface (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 2030-2035 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of water on the electrical and mechanical properties of the PhotoxTM-HgCdTe interface were investigated using capacitance-voltage techniques (1 MHz an quasi-static) and a simple scratch test, in conjunction with Fourier spectroscopy to monitor actual water content. PhotoxTuM is a form of SiO2 deposited by a low-temperature (〈100 °C) chemical vapor reaction. The water which is available as a byproduct of the deposition reaction becomes incorporated in the layer, with the amounts depending on deposition rate, as SiOH, H2O, and SiH...O It is seen that SiH increases with rate while SiOH and H2O decrease. After long periods (1 year) of atmospheric exposure, the SiH concentration goes to zero. In fact, layers deposited at higher rates in some ways come to spectrally resemble the lower deposition rate layers. The increased SiOH concentrations of the lower deposition rate layers result in better mechanical integrity of the interface. These rate-dependent concentrations do not affect interface electrical properties. However, it was seen that water absorbed after the layer was deposited strongly affected electronic structure, increasing interface state density between the valence band and midgap and increasing the net interface charge by up to +1×1011 cm−2. These effects are reversible with the initial interface structure recovered after a low-temperature vacuum bake.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334391
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  • 10
    Electronic Resource
    Electronic Resource
    A Practical Solution of the Problem of Dewatering Activated Sludge (1923)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 15 (1923), S. 956-959 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50165a042
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