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  • 11
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    Wiesbaden : Periodicals Archive Online (PAO)
    Geographische Zeitschrift. 36:10 (1930) 635 
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  • 12
    ISSN: 1432-0649
    Keywords: 42.55.Px ; 32.30.Jc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Saturated-absorption signals on the calcium 657 nm transition are observed by direct absorption using diode lasers and a high flux atomic-beam cell. Line-widths as narrow as 65 kHz are observed with a high signal-to-noise ratio. Prospects for using this system as a compact wavelength/frequency reference are considered.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Nutrient cycling in agroecosystems 28 (1991), S. 95-101 
    ISSN: 1573-0867
    Keywords: Phosphate rock dissolution ; soil pH ; solution phosphorus ; phosphorus fractionation ; monocalcium phosphate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Soil Samples were collected from a field experiment conducted to evaluate the agronomic effectiveness of a reactive phosphate rock (PR), Sechura sand, relative to that of monocalcium phosphate (MCP) at different soil pHs and rates of application. The samples were analysed for P soluble in the soil solution and bicarbonate extractable P. The rate of dissolution of PR was calculated from the data on the fractionation of inorganic P. In MCP plots P in the soil solution decreased sharply with time especially at low pHs and high rates of fertiliser application. In PR plots the concentration remained with time at the same as or a slightly higher level than that was found one month after application. Solution concentration of P was lower at very high rates of PR application than at intermediate rates. In both MCP and PR plots bicarbonate extractable P decreased with increasing pH. Bicarbonate extractable P was linearly related to MCP but not to PR applied. The rate of dissolution and the proportion of PR dissolved decreased with increasing rates of PR application but the amount dissolved increased. Phosphate dissolved at high level of PR application did not seem to enhance proportionately either the concentration of P in soil solution or bicarbonate extractable P.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Nutrient cycling in agroecosystems 31 (1992), S. 131-135 
    ISSN: 1573-0867
    Keywords: Rock phosphate ; agronomic effectiveness ; banana ; mycorrhiza ; P uptake ; extractable P ; P deficiency symptoms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The agronomic effectiveness of three rock phosphates (Idaho, Florida and North Carolina) as influenced by mycorrhizal inoculation withGlomus aggregatum was evaluated using small banana (Musa paradisiaca L.) corms as planting material. The treatments included superphosphate and a no-P control. The soil was fumigated to eliminate mycorrhizal propagules. The amount of P added was based on the quantity of material needed as superphosphate to establish 0.2 mg P L−1 in solution. Plants were grown in an Oxisol in 9-liter pots for 3 months after growth commenced. Plant dry weight, P percentage in the 3rd leaf, and total P uptake were increased when plants fertilized with insoluble rock phosphates were inoculated with mycorrhiza-producing fungi. Phosphorus uptake by plants fertilized with Idaho, Florida, and North Carolina rock phosphates was 0.18, 0.42, and 0.97 as much as by plants fertilized with superphosphate. The beneficial effect of mycorrhiza on phosphate uptake was 136, 30, 2 and 24% for plants fertilized with Idaho, Florida and North Carolina rock phosphate, and superphosphate, respectively.
    Type of Medium: Electronic Resource
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  • 15
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    London : Periodicals Archive Online (PAO)
    Journal of theological studies. n.s.:43 (1992) 243 
    ISSN: 0022-5185
    Topics: Theology and Religious Studies
    Notes: AUTHORS AND BOOKS REVIEWED OR NOTICED
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  • 16
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    The Hague : Periodicals Archive Online (PAO)
    The Journal of Value Inquiry. 27:1 (1993) 81 
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  • 17
    ISSN: 1432-0533
    Keywords: Neuropathy ; Immunotactoid ; Endoneurial deposits ; Monoclonal gammopathy ; Skin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An 85-year-old man with a 2-year history of progressive lower limb weakness and paresthesia was found to have an IgG kappa monoclonal gammopathy of undetermined significance (mgus). Clinical and electrophysiological studies revealed a severe distal bilateral symmetrical polyneuropathy. a sural nerve biopsy showed extensive nerve fibre loss with the deposition of large amounts of amorphous material throughout the endoneurium. Electron microscopy showed the deposits to be composed of microtubular structures which were located diffusely throughout the endoneurium. The deposits were also located within the lumina of the vasa nervorum, some of which were undergoing disintegration and rupture with release of the proteinaceous material into the endoneurium. The regions of the nerve in which they appeared most numerous showed more severe nerve fibre damage than other areas. These microtubular structures were also observed in disintegrating vessels and adjacent endoneurium. On immunohistochemistry they stained with antibody to IgG. Identical deposits were found in the dermis in which there was a leucocytoclastic vasculitis. Located in linear arrays within the axons of myelinated and unmyelinated fibres were highly organised tubular structures resembling immunotactoids. Identification of immunotactoidlike structures within the nerve is unique and may be another mechanism by which monoclonal proteins can induce nerve fibre injury.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 94 (1933), S. 215-215 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 19
    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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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 134 (1991), S. 65-72 
    ISSN: 1573-5036
    Keywords: acidity ; aluminium ; calcium ; citrus ; continuous-function design ; legumes ; manganese ; phosphorus ; soil mineral ; sulphur ; variable charge ; weathered soils
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Plant-soil interactions in weathered soils are so complex that unqualified statements about a suitable pH for plants are risky. Conventional experimental designs and statistical methods may not be appropriate for investigating such complexities. Lime experiments using continuous function designs and observation of plant response to indigenous variability in soil pH permit detailed observations of plant-soil interactions that are frequently not detected. A graphical boundary-line approach to interpreting data can make good sense out of apparent confusion. Increasing the pH of variable-charge soils by adding lime or by indigenous means increased CEC and retarded cation leaching, but Ca solubility changed very little over the range pH 5 to 6. N fixation and yield was closely related to soil pH, soil Mn and Mn uptake by soybean. This result was clearly demonstrated regardless of numerous other limiting factors. Plant yield response curves resolved into distinct segments that corresponded with associated soil properties. Excess Al compounded by Ca deficiency is suspect in the pH range 〈5. Excess Mn, and Ca deficiency probably limited yields in the pH range 5.0 to 5.7. Yields were stable, and Ca and P were constant in the pH interval 5.7 to 6.0. Yields abruptly increased in the pH interval 6.0 to 6.3. This was associated with elevated Ca concentrations in soil solutions.
    Type of Medium: Electronic Resource
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