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  • 1
    Electronic Resource
    Electronic Resource
    Fate of ionic thiocyanate (SCN-) in soil (1993)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 41 (1993), S. 978-982 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00030a029
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  • 2
    Electronic Resource
    Electronic Resource
    Ca2+-activated K+ channels are involved in regulatory volume decrease in acinar cells isolated from the rat lacrimal gland (1994)
    Springer
    The journal of membrane biology 141 (1994), S. 193-201 
    Details
    ISSN: 1432-1424
    Keywords: Ca2+-activated K+ channels ; Cell volume ; Regulatory volume decrease ; Tetraethylammonium ; Lacrimal acinar cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The volumes of acinar cells isolated from rat lacrimal gland were measured on computer by video-imaging. Cells were found to swell on exposure to hypotonic solutions; they subsequently exhibited a regulatory volume decrease (RVD). RVD was inhibited in the absence of extracellular Ca2+, and by the K+ channel blocker tetraethylammonium chloride (2 mm TEA+). The possible involvement of K+ channels in RVD was further investigated in cell-attached patches. Exposing the cells to a hypotonic solution activated channels with a conductance of 141±6 pS (n=11). These channels were partially blocked by 0.5 mm TEA+, and channel activation was not observed in the absence of extracellular Ca2+. Experiments in the inside-out patch configuration demonstrated that the channels activated by hypotonie stress were “maxi” Ca2+-activated K+ channels. It is concluded that the opening of these channels plays an important role in RVD, by facilitating K+ loss from the cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238253
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  • 3
    Electronic Resource
    Electronic Resource
    Competitive interaction among strains of Rhizobium leguminosarum bv. phaseoli in the nodulation of kidney beans (Phaseolus vulgaris L.) (1996)
    Springer
    Biology and fertility of soils 21 (1996), S. 7-9 
    Details
    ISSN: 1432-0789
    Keywords: Rhizobium leguminosarum bv. phaseoli ; Kidney bean ; Competitive ability ; Pairwise combination ; Compatibility ; Phaseolus vulgaris ; Nodulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract We examined the competitiveness of five effective Rhizobium leguminosarum biovar phaseoli strains in the nodulation of kidney beans (Phaseolus vulgaris L.), either alone or in pairwise combination, against the indigenous strains. The results showed that the introduced Rhizobium sp. strains (B2, B17, B36, T2, or CIAT 652) occupying 64–79% of the total nodules (as single inocula) were more competitive in nodulation than the native rhizobia. However, the competitiveness of the individual Rhizobium sp. strain either increased or decreased when used in a pairwise combination of double-strain inocula. For example, strain B17, although quite competitive against the indigenous population (68% nodule occupancy), became poorly competitive in the presence of strain B2 (reduced from 68 to 2.5%). A similar reduction in nodule occupancy by strain B17 was observed in the presence of B36 or CIAT 652, indicating that two competitive strains may not always be compatible. These results suggest that it is important to co-select competitive as well as compatible rhizobia for multistrain inoculant formulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335986
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  • 4
    Electronic Resource
    Electronic Resource
    Anisotropic defect distribution in ZnSe/ZnS epitaxial layers grown by metalorganic vapor-phase epitaxy on (001)-oriented GaAs (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 129-136 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial layers of ZnSe/ZnS have been grown by metalorganic vapor-phase epitaxy on (001)-oriented GaAs. A microstructural study of the defect content of these layers was performed using the combined techniques of scanning electron microscopy, reflection high-energy electron diffraction, transmission electron microscopy, and microdiffraction. Investigation of the epilayers in the [110] and [11¯0] orientations highlighted the strong anisotropy in the defect content of these ZnSe/ZnS layers. Microtwins were found exclusively in the [11¯0] sample orientation, while examination of the same layers along the orthogonal [110] projection revealed only misfit dislocations. The influence of the differential motion of α and β dislocations in the sphalerite structure is discussed in connection with these observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343891
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  • 5
    Electronic Resource
    Electronic Resource
    Scanning transmission electron beam induced conductivity investigation of a Si/Si1−xGex/Si heterostructure (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 2527-2529 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We demonstrate that scanning transmission electron beam induced conductivity can be used to image the recombination activity of an orthogonal 〈110〉 misfit dislocation array within a relaxed Si/Si1−xGex/Si(001) heterostructure on the submicrometer scale. Correlation with structural images suggests that an array of bunched dissociated 60° misfit dislocations is primarily responsible for the electrical activity in this instance. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363038
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  • 6
    Electronic Resource
    Electronic Resource
    Domain boundaries in epitaxial wurtzite GaN (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 1308-1310 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Double positioning boundaries on {12¯10} and {11¯00} planes in wurtzite GaN epilayer grown by molecular beam epitaxy on {1¯1¯1¯}B GaP are described. Transmission electron microscopy observations demonstrate that the {12¯10} boundary extending a short distance along the c axis is characterized by a displacement of 1/2〈101¯1〉 and is associated with single growth faults in the basal plane. This boundary forms as a consequence of island coalescence. Conversely, the {11¯00} boundary originates at the epilayer/substrate interface and runs through the whole epilayer, while g.R analysis combined with high resolution electron microscopy suggests a displacement of 1/3n〈112¯0〉 (n〉3) in the basal plane with an additional shift along 〈0001〉 of 1/n〈0001〉(n〉3). © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118520
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  • 7
    Electronic Resource
    Electronic Resource
    Inheritance of tolerance to barley yellow dwarf virus in oats (1985)
    Springer
    Euphytica 34 (1985), S. 681-687 
    Details
    ISSN: 1573-5060
    Keywords: Avena sativa ; oats ; barley yellow dwarf virus ; international screening ; quantitative inheritance ; single seed descent ; Rhopatosiphum padi ; virullferous aphids ; transgressive segregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Advanced generation random lines from crosses of tolerant x susceptible parents were studied to determine the inheritance of tolerance to barley yellow dwarf virus (BYDV) in oats Avena sativa L. Clintland 64, a susceptible oat cultivar, was crossed with the BYDV tolerant oat lines Otee, FF64/74, M921 and CI4492. Randomly selected lines were advanced to F5 or F6 by single seed descent and were tested for their reaction to BYDV at Palmerston North, New Zealand and Winnipeg, Manitoba and Ste-Foy, Quebec, Canada. The reactions of the lines to BYDV infection from each cross at the three test sites fall into a relatively continuous distribution. Two to four quantitatively inherited genes appear to contribute to the tolerance of the four tolerant oats. At Palmerston North, Clintland 64 expressed some tolerance to the virus. The correlation between the three sites was significant (P=0.01) for all crosses, ranging from 0.36 to 0.69, according to the particular cross considered. This correlation is sufficient to justify more international testing of oats for BYDV tolerance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035404
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  • 8
    Electronic Resource
    Electronic Resource
    Hydrolysis products of glucosinolates in Brassica napus tissues as inhibitors of seed germination (1996)
    Springer
    Plant and soil 181 (1996), S. 307-316 
    Details
    ISSN: 1573-5036
    Keywords: allelochemicals ; Brassica napus ; germination ; glucosinolates ; isothiocyanates ; rapeseed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Enzymatic hydrolysis of glucosinolates, a class of compounds found in Brassica species, results in a number of products with potential to inhibit seed germination. To investigate the impact of both volatile and water-soluble allelochemicals, germination bioassays using Lactuca sativa seeds were conducted with root and combined leaf and stem tissues of Brassica napus. Tissues in which glucosinolates were hydrolyzed to remove volatile glucosinolate degradation products were compared with intact tissues and water controls. Only tissues containing glucosinolates produced volatiles that inhibited germination. Volatiles were trapped and identified using GC-MS. Volatiles produced in greater quanitity from intact tissues than from tissues without glucosinolates were almost exclusively glucosinolate hydrolysis products. Water-soluble components also inhibited germination. Chemical analysis of extracts confirmed the presence of glucosinolate hydrolysis products, but indicated the involvement of additional allelochemicals, especially in leaf and stem tissues. Results support the proposal that glucosinolate-containing plant tissues may contribute to reductions in synthetic pesticide use if weed seeds are targeted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00012065
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  • 9
    Electronic Resource
    Electronic Resource
    Relation between sodium-coupled amino acid and sugar transport and sodium/potassium pump activity in isolated intestinal epithelial cells (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 111 (1982), S. 303-308 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Cells isolated from the epithelium of the small intestine are used to study the relationship between amino acid or sugar-coupled sodium transport and potassium uptake through the sodium/potassium pump. Potassium influx is a saturable function of the external potassium concentration. Uptake in the presence of ouabain, a specific pump inhibitor, is greatly reduced. This remaining influx is linearly related to the concentration up to 6 mM potassium. Sugars and amino acids are actively accumulated by the intestinal cells. Their transport is accompanied by an initial extra influx of sodium. Although cells seem to regulate their internal sodium concentrations, this is not accompanied with a concomitant increase in potassium uptake through the pump. Thus L-alanine, 3-0-methyl-D-glucoside, and α-methyl-D-glucoside all fall to increase the rate of ouabain-sensitive potassium uptake. A very high coupling ratio of sodium efflux to potassium influx through the pump would be a likely explanation of the present results though they cannot be regarded as conclusive.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041110312
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  • 10
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    Structural and electrical characterization of AuPtAlTi Ohmic contacts to AlGaN∕GaN with varying annealing temperature and Al content (2008)
    American Institute of Physics
    Details
    Publication Date: 2008-04-01
    Print ISSN: 0021-8979
    Electronic ISSN: 1089-7550
    Topics: Physics
    Published by American Institute of Physics
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