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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 12 (1978), S. 47-68 
    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 50 (1994), S. 253-260 
    ISSN: 1420-9071
    Keywords: Mismatch repair ; heteroduplex DNA ; heterozygous DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract For the formation of recombinants involving closely linked markers, two distinct processes play a role. The recombinational interaction between homologous DNA molecules results in the presence of heteroduplex DNA joining the parental components of the recombinant. The presence of markers distinguishing the parents in the region of heteroduplex DNA can result in base pair mismatches. The post recombination repair of such mismatches can contribute to the separation of closely linked markers. The processes responsible for such repair also play roles in mutation avoidance. The specificities, functions and contribution to the formation of recombinants for closely linked markers of the processes inEscherichia coli are described.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 25 (1993), S. 203-214 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une grande exploitation pour bovins a été fondée en 1954 dans une region du nord-est de la Tanzanie, hautement infestée par les glossines. Pendant 30 ans la trypanosomose a été controllée a l'aide de drogues prophylactiques mais en 1988 la resistance à ces drogues semble s'être developper car des cas de typanosomose ont été confirmés quatre au cinq semaines après traitement au chloride d'isometamidium (Samorin). L'état sanitaire du troupeau s'est deterioré et la productivité n'etait plus economiquement rentable. Afin de controler la population de glossines, les huit milles de bovins pâturant sur plus de 250 km2, ont été régulièrement immergés dans des bains de deltamethrine, pyrethroide de synthèse (Decatix cattle dip et spray formulation). En un an, la population de glossines, evaluée par piégeage a diminuée de plus de 90%. La mortalité due à la maladie a dimunuée de plus de 66% et plusieurs paramètres de productivité, tel que le pourcentage de mise bas et le gain de poids ont atteint des niveaux superieurs a ceux enregistrés avant la degradation de l'état sanitaire du troupeau.
    Abstract: Resumen Un hato grande de ganado fue establecido en 1954 en un area densamente infestada del noreste de Tanzania. Tripanosomiasis fue controlada por 30 anõs usando drogas profilacticas, pero en 1988 resistencia al fármaco pareció desarrollarse ya que casos de tripanosomiasis fueron confirmados 4 o 5 semanas después del tratamiento con isometamidium chloride (Samorin). La salud del hato se habia deteriorado y la productividad era economicamente baja. Para controlar la población de tse tse, las ocho mil cabezas de ganado pastoreando sobre 250 km2 fueron regularmente bañados con el pyrethroid deltamethrin sintético (Decatix para inmersion de bovinos y formulacion para aspersion). Dentro de un anõ la población de tse tse, monitoreada a través de trampas, habia disminuído mas del 90%. La mortalidad decrecio cerca de 66% y un rango de medidas de productividad tales como porcentajes de paricion y pesos al destete fueron incrementatdos a niveles arriba de aquellos que prevalecieron antes de la disminucion en la salud del hato.
    Notes: Summary A large cattle ranch was established in 1954 in a heavily tsetse infested part of north-east Tanzania. Trypanosomosis was controlled for 30 years by prophylactic drugs but in 1988 drug resistance seemed to be developing as cases of trypanosomosis were being confirmed 4 or 5 weeks after treatment with isometamidium chloride (Samorin). Herd health had deteriorated and productivity was uneconomically low. In order to control the tsetse population the 8,000 cattle, grazing over 250 km2, were regularly dipped in the synthetic pyrethroid deltamethrin (Decatix Cattle Dip and Spray formulation). Within a year the tsetse population, as monitored by traps, had decreased by more than 90%. Disease mortality decreased by 66% and a range of productivity measures such as calving percentages and weaning weights were raised to levels above those prevailing before the decline in herd health.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    BT technology journal 17 (1999), S. 131-140 
    ISSN: 1573-1995
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The TOVE Quality Ontology-VB is the formal representation (using First-order Logic) of terms, relationships, attributes, and axioms about quality which are generic beyond any specific quality domain. The assumption that quality is 'conformance to requirements' is used to decompose the quality domain into domains of measurement, identification, and traceability for further exploration; the TOVE Quality Ontology-VB is comprised of ontologies of these domains. An ontological engineering methodology comprised of motivating scenario, scope, and competency question statements, data model and axiom construction, and competency question/answer visualisation is demonstrated. The methodology is applied to develop the TOVE Traceability Ontology-VB. This ontology's representations are used to construct quality control applications enabling quality problem identification and tracing. They also enforce the properties of an entity that make it traceable — a novel and useful feature for quality control applications.
    Type of Medium: Electronic Resource
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