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  • 1
    Digitale Medien
    Digitale Medien
    Tetratrichomonas gallinarum in the Blood of Chickens Infected with Spirochetes (1966)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 13 (1966), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: SYNOPSIS. Tetratrichomonas gallinarum was found in the blood of 3 chickens experimentally infected with Borrelia anserina. The blood infection was successfully reproduced in healthy chickens and was accompanied by evidence that the trichomonads multiplied in the blood, ingested red blood cells, and were themselves phagocytized by leucocytes. T. gallinarum was maintained in serial passage in chicken embryos as well as in the usual trichomonad culture media.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1966.tb01917.x
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  • 2
    Digitale Medien
    Digitale Medien
    Biological responses of audiogenic stress (1986)
    Springer
    International journal of biometeorology 30 (1986), S. 315-321 
    Details
    ISSN: 1432-1254
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Notizen: Abstract Biological effects of prolonged exposure to sound waves (∼17 kHz) on developing female rats were examined. Rat pups of day 80 were grouped into two. Experimental group was exposed to sound waves and control group, who were not so exposed. Daily food, water intake were measured in developing animals and spontaneous motor activity, electrocardiogram and blood sugar were studied in adults. It was found that the experimental group of animals behaved differently from the control group. It is concluded that the sound waves produced changes in the animals which were within the physiological limits but were suggestive of development of stress.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02189368
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  • 3
    Digitale Medien
    Digitale Medien
    Effect of high altitude on sensitivity to the taste of phenylthiocarbamide (2000)
    Springer
    International journal of biometeorology 44 (2000), S. 20-23 
    Details
    ISSN: 1432-1254
    Schlagwort(e): Key words PTC taste sensitivity ; Taster ; Non-taster ; High altitude
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Notizen: Abstract  Sensitivity to the taste of phenylthiocarbamide (PTC) was studied using the Harris-Kalmus method in healthy human volunteers at sea level and then subsequently at an altitude of 3500 m over a period of 3 weeks, after which they were brought back to sea level. Blood sugar, insulin and blood cortisol levels were estimated weekly. The results indicated that, out of 51 subjects studied, 26 (55%) were PTC tasters at sea level. Eight of those unable to taste PTC at sea level tested as tasters at high altitude, and 2 of them reverted to being non-tasters on return to sea level. In the blood, an increase in cortisol and blood insulin levels was seen without any significant change in sugar levels. All the changes recorded at high altitude tended to return to basal values after re-induction to sea level. The study suggests that high-altitude hypoxia in some way, possibly involving changes in hormonal profile among other factors, causes an alteration in sensitivity to the taste of PTC, resulting in some of the individuals shifting to lower PTC sensitivity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004840050134
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  • 4
    Digitale Medien
    Digitale Medien
    Influence of continuous cropping and fertilization on adsorption and desorption of soil phosphorus (1994)
    Springer
    Nutrient cycling in agroecosystems 40 (1994), S. 121-128 
    Details
    ISSN: 1573-0867
    Schlagwort(e): adsorption and desorption isotherms ; long-term fertilization ; maize-wheat sequence ; phosphate adsorption and desorption
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Surface soil samples (0–15 cm) from six differentially fertilized plots (N0P0K0, N120P0K0, N120P17.5K0, N120P35K0, N120P17.5K33.2 and N120P35K33.2) of a long-term experiment on maize-wheat annual sequence at Ludhiana (India) were collected after 11 years of continuous cropping and fertilization, to study soil phosphorus (P) adsorption-desorption. These soils differed widely with respect to their P adsorption and desorption properties. Phosphate adsorption increased with increasing levels of added P in all soils. The extent of P adsorption was comparatively lower in the plots receiving P. Phosphorus adsorption data was found to fit best both to Langmuir and Freundlich isotherms for each of the six soil samples. Soil P adsorption maxima obtained from Langmuir isotherm varied from 123 to 498µg g−1 soil in the six differentially fertilized plots. The bonding energy values obtained from Langmuir isotherm plot were the lowest in control and N120P0K0 treatments whereas these values tended to increase with P addition. Freundlich constants ‘a’ and ‘n’ (extent and rate of adsorption) calculated from the regression lines also showed similar trend for the six soil samples. The plot of desorbed P versus desorbed P/adsorbed P was linearly correlated for each of the six soil samples. Computation of desorable P capacity (or desorption maxima, Dm) and desorption rate constant (Kd) from this relationship indicated higher Dm values in soil samples collected from check (N0P0K0) and N fertilized (N120P0K0) plots. This value tended to decrease in plots which received P during cropping. The Kd values were more in soil samples which were fertilized with P during croping and lower in check and N120P0K0 treated plots.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00750096
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  • 5
    Digitale Medien
    Digitale Medien
    Influence of continuous fertilization to a maize-wheat system on the changes in soil fertility (1995)
    Springer
    Nutrient cycling in agroecosystems 40 (1995), S. 7-19 
    Details
    ISSN: 1573-0867
    Schlagwort(e): available nutrients and micronutrients ; crop rotation ; fertilizers addition ; maize-wheat system ; organic carbon
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract The effect of continuous application of rates of N (40, 80 and 120 kg N ha−1), P (0, 17.5, and 35 kg P ha−1) and K (0 and 33.2 kg K ha−1) to a maize-wheat annual sequence on the changes in soil fertility after harvest of maize and wheat in their 11th cycle are reported. The organic carbon (O.C.), available nutrients and micronutrients tended to decline with cropping. Application of N or P significantly increased O.C. status of the soil both after harvest of maize and wheat. Potassium addition also increased the O.C. status but significant differences were observed only after wheat harvest (22nd crop). The available N status of the soil increased significantly with N application whereas a declining trend occurred with P dressings. Potassium application did not affect the soil available N content. The maximum decline in available P status was observed under N120 P0 K33.2 treatment whereas a significant increase occurred in P treated plots. The available K status continued to decline in plots receiving increasing rates of N and NP fertilizers. The soil available K status was maintained to its initial content in plots receiving fertilizer K with increasing rates of N with or without P. Continuous application of increasing levels of N (averaged over PK) depleted the soil of DTPA-extractable Fe, Mn, Zn and Cu content. The addition of P also resulted in a decline in the status of Mn and Cu whereas the Fe and Mn content of the soil was increased. The available micronutrients content was least affected by K additions. The contents of organic carbon, available N and K in differentially fertilized plots were higher after harvest of 22 crops (wheat) than 21 crops (maize) while the reverse occurred in respect of available P and micronutrients.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00749858
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  • 6
    Digitale Medien
    Digitale Medien
    The quantity-intensity relations of potassium in soils from plots having nine fixed crop rotations for six years (1978)
    Springer
    Plant and soil 50 (1978), S. 363-370 
    Details
    ISSN: 1573-5036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Soil samples collected 6 years after raising of various cereals, pulses, oil seed and tuber crops in nine fixed rotations were used to study the quantity-intensity relations of potassium. Potassium activity ratio, where the soil neither gains nor looses K, was correlated in a highly significant manner (P = 0.01) with the total amount of K fertilizer applied during 6 years. The K buffering capacity, the slope of the Q/I curve, when the soil neither gains nor looses K, was positively correlated (P = 0.05) with K saturation of the total and inorganic cation exchange capacities to a similar extent. Superimposing Q/I curves showed no appreciable difference between samples from different treatments. Desorption of potassium with increasing soil∶solution (0.01M CaCl2) ratio followed a Langmuir type of equation and supported the conclusions drawn from quantity-intensity curves.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02107185
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  • 7
    Digitale Medien
    Digitale Medien
    The quantity-intensity relations of potassium in soils from plots having nine fixed crop rotations for six years (1978)
    Springer
    Plant and soil 50 (1978), S. 363-370 
    Details
    ISSN: 1573-5036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Soil samples collected 6 years after raising of various cereals, pulses, oil seed and tuber crops in nine fixed rotations were used to study the quantity-intensity relations of potassium. Potassium activity ratio, where the soil neither gains nor looses K, was correlated in a highly significant manner (P = 0.01) with the total amount of K fertilizer applied during 6 years. The K buffering capacity, the slope of the Q/I curve, when the soil neither gains nor looses K, was positively correlated (P = 0.05) with K saturation of the total and inorganic cation exchange capacities to a similar extent. Superimposing Q/I curves showed no appreciable difference between samples from different treatments. Desorption of potassium with increasing soil∶solution (0.01M CaCl2) ratio followed a Langmuir type of equation and supported the conclusions drawn from quantity-intensity curves.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02107185
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  • 8
    Digitale Medien
    Digitale Medien
    Influence of paddy and corn in different rotations on wheat yield, nutrient removal and soil properties (1979)
    Springer
    Plant and soil 51 (1979), S. 51-57 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Crop rotations ; Nitrogen immobilization ; Nutrient removal ; Soil properties ; Wheat yield
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary In a 3 year field study, the effect of two rotations, paddy (Oryza sativa L.), wheat (Triticum aestivum L.), mung (Phaseolus aureus L.) and corn (Zea mays L.), wheat (Triticum aestivum L.), mung (Phaseolus aureus L.) on wheat yield and chemical, physical and biological properties of soil was evaluated. Grain yield of the wheat sown after paddy during 1972–73, 1973–74 and 1974–75 was lesser by 0,300 and 390 kg/ha respectively than that of the wheat following corn. The reduction in the yield of wheat was attributed to relatively higher NPK removal by paddy, greater immobilization of N applied to wheat and deterioration of soil physical conditions in the paddy field. Total NPK removal by paddy average 131 kg/ha more than that by corn. Sharp increase in bacterial population of soil during early growth of wheat that followed paddy and the concurrent less available N in soil and low N content in wheat plants suggested that the N applied to wheat was immobilised to organic form. The increase in soil bulk density and particle dispersion ratio and decrease in water storage in deeper soil layers in the paddy field probably restricted the root proliferation and growth of wheat.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02205926
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  • 9
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    Unbekannt
    Paleogeographic and Paleotectonic Evolution of a Basement-Controlled Archean Supracrustal Sequence, Chibougamau-Caopatina, Quebec (1989)
    University of Chicago Press
    Details
    Publikationsdatum: 1989-07-01
    Print ISSN: 0022-1376
    Digitale ISSN: 1537-5269
    Thema: Geologie und Paläontologie
    Publiziert von University of Chicago Press
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  • 10
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    Tree growth and nutrient status of soil in a poplar (Populus deltoides Bartr.)-based agroforestry system in Punjab, India (2007)
    Springer
    Details
    Publikationsdatum: 2007-02-27
    Print ISSN: 0167-4366
    Digitale ISSN: 1572-9680
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Publiziert von Springer
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