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  • Articles: DFG German National Licenses  (11)
  • Electronic Resource  (11)
  • Drosophila ananassae  (4)
  • Rice  (3)
  • (C. perfringens)  (2)
  • Gall bladder  (2)
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  • Articles: DFG German National Licenses  (11)
Material
  • Electronic Resource  (11)
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 1130 (1992), S. 90-94 
    ISSN: 0167-4781
    Keywords: (C. perfringens) ; GroEL operon ; HSP60 sequence ; Polymerase chain reaction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 1130 (1992), S. 203-208 
    ISSN: 0167-4781
    Keywords: (C. perfringens) ; HSP70 sequence ; Polymerase chain reaction ; dnaK gene
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 221-224 
    ISSN: 1279-8517
    Keywords: Gall bladder ; Agenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'absence congénitale de la vésicule biliaire est une malformation dont l'incidence est évaluée de 0,013 à 0,075 %. Nous rapportons deux observations d'agénésie de la vésicule biliaire, représentant les premiers cas de l'Afrique du Sud, nous les confronterons au 413 cas de la littérature. Pour confirmer le diagnostic d'agénésie de la vésicule biliaire, il est nécessaire d'exclure les localisations vésiculaires anormales, soit intra-hépatiques, soit rétro-hépatiques, soit dans le foie gauche, soit à l'intérieur de l'omentum ou du ligament falciforme, voire même rétro-péritonéales. Les patients porteurs d'agénésie de la vésicule biliaire sont classés en trois catégories : 1) Sujets porteurs de multiples anomalies foetales (12,9 %) 2) Sujets asymptômatiques (33,6 %) 3) Sujets avec manifestations cliniques (55,6 %). Néanmoins, les modalités diagnostiques habituelles peuvent, dans de rares conditions, se présenter dans le cadre d'une urgence chirurgicale abdominale. L'agénésie de la vésicule biliaire est une malformation bien connue, mais reste une anomalie rare. Avec l'avènement des abords chirurgicaux à minima, la laparotomie peut être évitée à condition que dans les cas suspectés, on réalise une exploration par endoscopie rétrograde des voies biliaires et pancréatiques (ERCP) et un scanner abdominal.
    Notes: Summary Congenital absence of the gall bladder is an extremely rare embryological aberration with a reported incidence ranging between 0.013 and 0.075%. This report, the first from South Africa, discusses 2 cases of gall bladder agenesis, bringing to 413 the number of cases reported in the literature. In confirming the diagnosis of an agenesis of the gall bladder, it is necessary to exclude the abnormal locations which are intrahepatic, retrohepatic, on the left side, or within the lesser omentum or falciform ligament and retroperitoneal. Patients with gall bladder agenesis are classified into 3 categories: i) Multiple foetal anomaly (12.9%), ii) Asymptomatic (31.6%) and iii) Symptomatic (55.6%). Notwithstanding current diagnostic modalities, this rare condition may still present a dilemma to the abdominal surgeon. Agenesis of the gall bladder is a well-recognised but uncommon congenital abnormality. With the advent of minimal access surgery laparotomy may be avoided as the condition, when suspected, may be confirmed by ERCP and CT scan.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 221-224 
    ISSN: 1279-8517
    Keywords: Gall bladder ; Agenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Congenital absence of the gall bladder is an extremely rare embryological aberration with a reported incidence ranging between 0.013 and 0.075%. This report, the first from South Africa, discusses 2 cases of gall bladder agenesis, bringing to 413 the number of cases reported in the literature. In confirming the diagnosis of an agenesis of the gall bladder, it is necessary to exclude the abnormal locations which are intrahepatic, retrohepatic, on the left side, or within the lesser omentum or falciform ligament and retroperitoneal. Patients with gall bladder agenesis are classified into 3 categories: i) Multiple foetal anomaly (12.9%), ii) Asymptomatic (31.6%) and iii) Symptomatic (55.6%). Notwithstanding current diagnostic modalities, this rare condition may still present a dilemma to the abdominal surgeon. Agenesis of the gall bladder is a well-recognised but uncommon congenital abnormality. With the advent of minimal access surgery laparotomy may be avoided as the condition, when suspected, may be confirmed by ERCP and CT scan.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 18 (1988), S. 357-369 
    ISSN: 1573-3297
    Keywords: Drosophila ananassae ; selection ; high and low mating propensity ; polygenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract InDrosophila ananassae, artificial selection was carried out for high and low mating propensity for 15 generations. Response to selection was from about F5, with rapid divergence in mating frequencies in replicates of both fast and slow lines. To assess the effect of selection on the two sexes, females and males of the selected lines were tested against their respective counterparts of the control line after 15 generations. Significant differences in mating propensity were observed when selected males were tested against the control females, which suggests that males were much more affected by selection than females. After 15 generations the fast and slow lines (both replicates) were crossedinter se and mating frequencies of F1 hybrids were studied in the same way as during the selection experiment. F1 flies had a higher mating activity compared to their parental lines when males were derived from fast lines to produce hybrids. On the other hand, F1 hybrids produced by crossing slow-line males with fast-line females showed mating frequencies similar to those of the slow parental lines. These findings suggest that mating propensity inD. ananassae is under the control of polygenes. Furthermore, the significant differences in mating propensity of hybrids produced by the fast and slow males indicate the possibility of a Y-linked influence on mating propensity inD. ananassae.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 23 (1993), S. 239-243 
    ISSN: 1573-3297
    Keywords: Drosophila ananassae ; selection ; high and low pupation height ; polygenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Selection for high and low pupation height inDrosophila ananassae was carried out for 10 generations. Response to selection resulted in rapid divergence in pupation height in replicates of both high and low lines. There was a significant difference in mean pupation height among high, low, and control lines. Regression coefficients for both high and low lines were significantly different from zero. The realized heritability over 10 generations was 45–49 for the high lines and 26–29 for the low lines. The F1 hybrids produced by making reciprocal crosses between high and low lines showed intermediate pupation height. These findings suggest that pupation height inD. ananassae is under polygenic control, with a substantial amount of additive genetic variation.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 69 (1985), S. 437-441 
    ISSN: 1432-2242
    Keywords: Inversion karyotypes ; Relative fitness ; Heterosis in interpopulation crosses ; Coadaptation ; Drosophila ananassae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The relative viabilities of homozygous and heterozygous karyotypes were measured by making crosses between strains ofD. ananassae homozygous for ST or inverted gene orders in the second and third chromosomes. The strains utilized during the present study originated from widely separated localities in India, Kuala Lumpur and Kota Kinabaru, Malaysia and Chian Mai, Thailand. The presence of heterosis in many interpopulation crosses is evident from the results which show that the inversion heterozygotes formed by chromosomes coming from distant populations exhibit heterosis. On the other hand, heterosis is absent in two intrapopulation crosses. Thus the present results provide evidence that heterozygosis for many genes and gene complexes does produce high fitness without previous selectional coadaptation.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-5036
    Keywords: Organic manures ; Residual effects ; Rice ; Yield ; Zinc application ; ZnO suspension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Application of zinc sulphate mixed with compost/poultry manure proved to be equivalent to the effect of dipping the seedling roots in 4% ZnO suspension with respect to rice yields but Zn-amended organic manures were superior to other treatments with regards to total Zn uptake. A marked residual effect of soil applied treatments was recorded on the succeeding maize crop. Application of poultry manure alone was about one and a half times more effective than compost alone in increasing the rice and maize grain yields. Poultry manure surpassed compost in increasing zinc uptake by the crops and at the same time it built up more available Zn in soil than compost for the following crop. The magnitude of yields and Zn uptake response were magnified when zinc sulphate was applied along with organic manures. Application of 25 kg zinc sulphate/ha alone had the same effect as 50 quintals poultry manure alone or 12.5 kg zinc sulphate applied with 50 quintals compost/ha with respect to crop yields. A significant positive correlation was, recorded in both the crops between Zn concentration in grain or straw and their respective yields.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1573-5036
    Keywords: Extractants for available Zn ; Hill and forest soils ; Rice ; Threshold value ; Zinc response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The available Zn in 25 soils of Sub-Himalayan hill and forest region was determined by using some chemical extractants to evaluate its critical limit in soils and rice plant. The critical limit of soil available Zn using DTPA-CaCl2, DTPA-NH4HCO3, EDTA-NH4OAc and EDTA-(NH4)2CO3 was 0.76, 0.86, 0.85 and 1.18 ppm, respectively. The amount of Zn extracted by these extractants was positively and significantly correlated with per cent dry matter yield. In addition to per cent dry matter yield, the Zn extracted by DTPA-CaCl2, DTPA-NH4 HCO3 and EDTA-(NH4)2CO3 was also positively correlated with Zn concentration in 3rd leaf of rice, Zn concentration in rice shoots, Zn uptake by rice shoots and organic carbon content of the soil, and negatively correlated with soil pH.The 2N MgCl2 and 0.1N HCl extractants were found to be not suitable for these soils. Among the four promising extractants, EDTA-(NH4)2CO3 was most efficient as the value of critical limit determined by it expressed 82.4% predictability in the degree of accuracy against 36.8% with EDTA-NH4OAc. Hence EDTA-NH4OAc is the least efficient extractant for estimation of available Zn in such soils. The critical Zn concentration in 3rd leaf of rice was worked out to be 21.5 ppm below which economic responses to Zn application can be expected.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-5036
    Keywords: Calcareous soil ; DTPA-extractable iron ; Iron ; Lentil ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a pot experiment with 26 calcareous soils, the critical limit of Fe in soils and plants was evaluated. DTPA-extractable Fe was found significanty correlated with Bray's per cent yield in rice. The Fe2+ (iron) in rice and lentil was also found significantly correlated with DTPA-extractable Fe as well as Bray's per cent yield showing thereby the superiority of Fe2+ (iron) in leaves over DTPA-extractable soil Fe to differentiate Fe responsive soils from non-responsive ones. The total Fe content in plant tissues does not seem correlated with the occurrence of Fe deficiency. The threshold values of DTPA-extractable soil Fe and Fe2+ (iron) in rice and lentil leaves were 6.95, 44 and 74.5 ppm, respectively below which appreciable responses to Fe application were observed. The optimum Fe level for these soils was found to be 10 ppm in which the dry matter yield response in all the 19 rice soils and 16 lentil soils ranged from 14.28 to 56.16 (Av. 25.75%) and 13.31 to 53.97 (Av. 22.47%), respectively.
    Type of Medium: Electronic Resource
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