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  • 1
    Electronic Resource
    Electronic Resource
    The Chemical Abstracts Service Chemical Registry System. I. General Design (1976)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 16 (1976), S. 111-121 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci60006a016
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  • 2
    Electronic Resource
    Electronic Resource
    Parent Compound Handbook-Successor to The Ring Index (1980)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 20 (1980), S. 162-167 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci60023a010
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  • 3
    Electronic Resource
    Electronic Resource
    Chemical Abstracts Service Chemical Registry System. 13. Enhanced handling of stereochemistry (1991)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 31 (1991), S. 204-212 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci00002a005
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  • 4
    Electronic Resource
    Electronic Resource
    Selection for resistance to Cochliobolus sativus in tall fescue (Festuca arundinacea Schreb.) (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 807-810 
    Details
    ISSN: 1432-2242
    Keywords: Cochliobolus sativus ; Drechslera sorokiniana ; Helminthosporium sativum ; Resistance ; Forage quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Cochliobolus sativus (Ito and Kurib.) Drechsl. ex Dastur is a major foliar pathogen of tall fescue (Festuca arundinacea Schreb.) which can greatly reduce the quantity and quality of forages available for animal consumption. A greenhouse screening program was initiated to determine the inheritance of resistance to C. sativus in tall fescue over several cycles of mass selection. Resistance to C. sativus in four tall fescue cultivars was increased with 2–3 cycles of mass selection. Realized heritabilities were low to moderate (0.04 to 0.58) indicating that environmental influences on the expression of resistance are quite high. Variances were unchanged by selection, indicating that further improvement should be possible. However, progress with mass selection can be expected to be slow. Lesion size was decreased in each cultivar by selecting for lesion coverage. Lesion size, being independent of inoculum load and therefore less subject to environmental variation, should be considered as an additional selection criteria to improve the rate of progress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266549
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  • 5
    Electronic Resource
    Electronic Resource
    Establishment of molecular markers and linkage groups in two F2 populations of Upland cotton (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 915-919 
    Details
    ISSN: 1432-2242
    Keywords: Gossypium hirsutum L. ; Restrictionfragment length polymorphisms ; Linkage map
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two F2 populations of cotton (Gossypium hirsutum L.) from the crosses of HS46 x MARCABUCAG8US-1-88 (MAR) and HS46 x Pee Dee 5363 (PD5363) were characterized for restriction fragment length polymorphisms (RFLPs) using DNA probes. Seventy-three probe/enzyme combinations were used in the HS46 x MAR population analysis, which resulted in 42 informative polymorphic fragments. These 42 moleclar markers represented 26 polymorphic loci, which consisted of 15 codominant and 11 dominant (+/-) genotypes. Chi-square analyses of these loci fit expected genotypic ratios of 1∶2∶1 and 3∶1, respectively An analysis of these loci with the MAPMAKER program resulted in the establishment of four linkage groups A, B, C, and D with 4,2,2, and 2 loci, respectively, as well as 16 unlinked loci. Six probe-enzyme combinations were assayed on the HS46 x PD5363 population, which resulted in 11 informative polymorphic fragments. These 11 fragments represented 6 polymorphic loci, 1 dominant (+/-) and 5 codominant genotypes. The MAPMAKER analysis of these loci yielded 2 linked loci. Thus, a total of 53 polymorphic fragments and 32 polymorphic loci, representing five linkage groups, were identified among the two families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224030
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  • 6
    Electronic Resource
    Electronic Resource
    Absence of proton weak coupling states in93Nb (1972)
    Springer
    The European physical journal 256 (1972), S. 199-209 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reactions93Nb(p, p)93Nb,93Nb(p, n)93Mo, and93Nb(p, p′) through isobaric analog resonances in94Mo have been used to study the structure of low-lying93Nb states, specifically the degree to which these states can be described as single protons coupled to the core states of92Zr. Excitation curves were obtained from 5.8 to 7.6 MeV incident proton energy, for eight states in93Nb. Results of this work are compared to results from Coulomb excitation studies,93Nb(n, n′γ),93Nb(d,p),92Zr(3He,d),94Mo(d,3He) and other related work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01392093
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of genetic variances, heritabilities, and correlations for yield and fiber traits among cotton F2 hybrid populations (1996)
    Springer
    Euphytica 91 (1996), S. 315-322 
    Details
    ISSN: 1573-5060
    Keywords: correlation ; cotton ; F2 hybrid ; genetic model ; genetic variance ; Gossypium hirsutum ; heritability ; mixed model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary F2 hybrid cultivars continue to occupy a small portion of the cotton (Gossypium hirsutum L.) production are in the United States, but occupy a larger proportion of the production area in some other countries. Sixty-four F2 hybrids resulting from crosses of four commercial cultivars and 16 pest-resistant germplasm lines were evaluated for five fiber and four yield traits in four environments at Mississippi State, MS. An additive-dominance genetic model was employed for these traits. The minimum norm quadratic unbiased estimation (MINQUE) method was used with a mixed model approach for estimating genetic variance and covariance components and for predicting genetic correlations. This study investigated genetic variances, heritabilities, and genetic and phenotypic correlations between agronomic and fiber traits among these 64 F2 hybrid populations and discussed the usefulness of these populations for use as hybrids or for selections for pure lines. Dominance variance accounted for the major proportion of the phenotypic variances for lint yield, lint percentage, and boll size indicating that hybrids should have an advantage for these traits compared to pure lines. A low proportion of additive variance for fiber traits and the significant additive x environment variance components indicated a lack of substantial useful additive genetic variability for fiber traits. This suggests that selections for pure lines within these F2 populations would have limited success in improving fiber traits. Genetic and phenotypic correlation coefficients were of comparable magnitude for most pairs of characters. Fiber strength showed a positive additive genetic correlation with boll weight. Dominance genetic correlations of fiber strength with elongation and 2.5% span length were also significant and positive; however, the additive genetic correlation of length and strength was zero.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00033093
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  • 8
    Electronic Resource
    Electronic Resource
    Inheritance of resistance to seed deterioration in cotton (1993)
    Springer
    Euphytica 69 (1993), S. 203-209 
    Details
    ISSN: 1573-5060
    Keywords: cotton ; seed germination ; Gossypium hirsutum ; inheritance ; seed deterioration ; imbibition ; vigor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Deterioration of cotton, Gossypium hirsutum L., seed can adversely affect stands, seedling vigor, and subsequent performance of plants, but deterioration can be lessened by improved genetic resistance. This study was conducted to evaluate the relationship of physical and germination characteristics of cotton seed and to determine the inheritance of resistance to seed deterioration. Physical (weight, volume, density, and imbibition rate) and germination (germination of non-deteriorated seed and deteriorated seed) characteristics were determined for eight cotton genotypes. In addition, imbibition rate and the germination characteristics were determined for all possible F1, including reciprocals, combinations of the eight genotypes. Variation among the parents for germination of deteriorated seed and imbibition rate were significantly, highly correlated (r=−0.97) and intrinsically related. Resistance to seed deterioration tended to increase as seed weight and volume decreased. Significant genetic effects were found for imbibition rate and germination of both non-deteriorated and deteriorated seed. However, general combining ability (GCA) accounted for only 21% of the variation in crosses sums of squares for germination of non-deteriorated seed. In contrast, GCA accounted for 90% of the variation for germination of deteriorated seed and imbibition rate. A breeding approach involving selection of early generation seed for ability to survive hot water treatment, then evaluating later generations for imbibition rate is suggested as a means to improve resistance to seed deterioration in cotton.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022366
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  • 9
    Electronic Resource
    Electronic Resource
    Comparison of white clover and ammonium nitrate as nitrogen sources for tall fescue (1989)
    Springer
    Nutrient cycling in agroecosystems 21 (1989), S. 109-111 
    Details
    ISSN: 1573-0867
    Keywords: Legumes ; nitrogen fixation ; tall fescue ; white clover ; nitrogen fertilizer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract White clover was compared against five rates of nitrogen fertilizer (NH4NO3) as sources of N for tall fescue over a 3 year period. The white clover-tall fescue combination produced as much forage as tall fescue alone fertilized with 132–198 kg N ha−1 in the first 2 years. However, in the third year the white clover-tall fescue combination only produced as much forage as tall fescue alone fertilized with 0–66 kg N ha−1 as a result of a large decline in the stand of white clover. Tall fescue alone showed a significant response to fertilization up to the maximum rate of 264 kg N ha−1. Tall fescue fertilized with 264 kg N ha−1 produced significantly more forage than the white clover-tall fescue combination in all 3 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01080535
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  • 10
    Electronic Resource
    Electronic Resource
    Mechanical input impedance of human teethin vivo (1968)
    Springer
    Medical & biological engineering & computing 6 (1968), S. 487-492 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire L’impédance d’entrée mécanique des dentsin vivo a été mesurée dans la gamme de fréquences de 60 à 5000 Hz. On a utilisé un générateur délivrant une force sinusoidale de fréquence variable et d’amplitude crête à crête constante de 4,4×104 dyn. Nos résultats, et ceux d’autres chercheurs, indiquent que le système suspenseur de la dent se compose de plusieurs ressorts et amortisseurs équivalents. Le but de l’étude initiale est d’établir une corrélation entre quelques aspects de l’impédance mécanique et la ‘mobilité clinique’ ou le jeu des dents. Un accroissement de la mobilité d’une dent a été longtempts regardé comme une découverte importante dans l’étude de la périodontite, et comme un élément clef dans la détermination du mode selon lequel on pourrait ou non restaurer la fonction dentaire perdue. Finalement, nous espérons constituer un instrument clinique capable de mesurer objectivement la mobilité d’une dent.
    Abstract: Zusammenfassung Die mechanische Eingangsimpedanz menschlicher Zähnein vivo wurde über den Frequenzbereich von 60 bis 5000 Hz gemessen. Ein Generator lieferte eine sinusförmige Kraft variabler Frequenz und konstanter Gipfel-Gipfel-Amplitude von 4,4×104 dyn. Die Daten dieser und anderer Untersuchungen ergeben, daß der Aufhängeapparat der Zähne aus mehreren äquivalenten Federn und Dämpfungen besteht. Der Zweck dieser Arbeit soll zunächst sein, eine Korrelation zwischen einem Aspekt der mechanischen Impedanz und der ‘klinischen Beweglichkeit’ oder ‘Wackligkeit’ von Zähnen herzustellen. Erhöhung der Zahnbeweglichkeit wurde lange als Hauptzeichen bei Periodontitis und als Angriffspunkt für Erwägungen über Möglichkeit und Art der Wiederherstellung verlorener Zahnfunktionen betrachtet. Wir hoffen, schließlich ein geeignetes klinisches Instrument zur objektiven Messung der Zahnbeweglichkeit zu entwickeln.
    Notes: Abstract The mechanical input impedance of teethin vivo has been measured over the frequency range of 60–5000 c/s. A generator was used which delivered a sinusoidal force of variable frequency and constant peak-to-peak amplitude of 4·4×104 dyn. Our data plus those of others indicate that the suspensory apparatus of the tooth consists of several equivalent springs and dampers. The purpose of the initial study is to establish a correlation between some aspect of mechanical impedance and ‘clinical mobility’ or ‘looseness’ of teeth. An increase in tooth mobility has long been regarded as a cardinal finding in periodontal disease and a key consideration in determining the feasibility and mode of restoring lost dental function. Finally, we hope to develop a suitable clinical instrument for measuring tooth mobility objectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474287
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