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  • 1
    ISSN: 1432-0789
    Keywords: Key words Organic material application ; Hot water extractable C ; Soil microbial biomass ; Soil neutral sugar ; Soil available N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  The effect of short-term bark compost (Ba) and leaf litter (Li) applications on the labile soil organic matter (SOM) status was investigated. The SOM status studied in this paper includes soil microbial biomass, soil available N, hot water extractable C (HwC) and N (HwN) and soil neutral sugar-C composition. The soil microbial biomass C (MBC) and N (MBN), soil available N, HwC and HwN increased upon application of Ba and Li. No quantitative relationship was observed between application of organic material and MBC, MBN or soil available N. A positive linear correlation was observed between MBN and HwC but not between MBN and soil available N. Among the various soil neutral sugar C, xylose C (Xyl) content in Ba plots showed a remarkable increase but mannose C (Man) did not differ among Fer (fertilizer), Ba or Li plots. Soil neutral sugar C had a positive linear correlation with soil available N, MBN and HwC. The proportion of MBN : TN is positively correlated with the Xyl/Man ratio. The increase in the proportion of MBN in SOM seems to occur with the increase of SOM derived from plant debris.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Biology and fertility of soils 25 (1997), S. 372-381 
    ISSN: 1432-0789
    Keywords: Key words Cropping systems ; Biodynamic farms ; Soil organic matter fractions ; Microbial biomass ; Soil quality indicators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Effects of cropping systems on soil organic matter (SOM) in a pair of conventional and biodynamic mixed cropping farms were investigated. Soil samples (0–75 and 75–150-mm depths) were analysed for total carbon (TC), total nitrogen (TN), microbial biomass C (BC) and microbial biomass N (BN), and sequentially extracted for labile and stable SOM using cold water, hot water, acid mixtures and alkalis. In the biodynamic farm, TC and TN decreased with increasing period of cropping but the reverse occurred under pastures. These were not shown in soils from the conventional farm, probably due to N fertilizer additions. Under pastures, increases in SOM were attributed to greater biological N2 fixation and the return of plant residues and excreta from grazing animals. Overall, sensitive SOM quality indicators found for labile SOM were BN, BN:TN and HC:TC, and for stable SOM were HCl/HFC, HCl/HFC:TC, humin C, humin N, humin C:TC and humin N:TN. The BN and BN:TN were better indicators than BC and BC:TC. The humin fraction was strongly related to both labile and stable SOM fractions suggesting that humin contained non-extractable strongly complexed SOM components with mineral matter and also non-extractable plant and microbial residual components.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 1 (1968), S. 30-37 
    ISSN: 1432-1041
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Zusammenfassung Die Kreislaufwirkungen einer neuen blutdrucksenkenden Substanz, Dichlorphenylaminoimidazolin (DCAI) wurden an 17 normotonen und 17 hypertonen Versuchspersonen untersucht. Die folgenden Parameter wurden gemessen: Arterieller Blutdruck, peripherer Venendruck, Muskeldurchblutung, Hautdurchblutung, Herzfrequenz, Gesamt-Blutvolumen und die Ausscheidung von Brenzkatechinaminen und Vanillin-Mandelsäure. DCAI wurde in Einzeldosen von 0.1–0.3 mg intravenös bzw. bei länger dauernden Experimenten in Tagesdosen von 0.3–1.5 mg per os verabreicht. — DCAI bewirkte intravenös gegeben, einen durchschnittlich 2 min dauernden Anstieg sowohl des systolischen als auch des diastolischen arteriellen Blutdrucks, dem ein langanhaltender Druckabfall folgte. Die Herzfrequenz nahm während beider Phasen gering ab. Der periphere Venendruck änderte sich nicht signifikant. Die Muskeldurchblutung blieb unverändert oder nahm vorübergehen gering zu. Unmittelbar nach der Injektion von DCAI fiel die Hautdurchblutung bis auf 50–60% der Ruhedurchblutung ab, anschließend stieg she allmählich wieder in Richtung auf die Ausgangswerte an, ohne these jedoch während der Beobachtungszeit zu erreichen. — Im Verlauf einer wirksamen oralen Behandlung mit DCAI bei 9 Hypertonikern änderte sich das Gesamt-Blutvolumen nicht signifikant. — Die Ausscheidung von Katecholaminen und Vanillin-Mandelsäure wurde durch einmalige intravenöse Gabe von 0.15 mg DCAI nicht sicher beeinflußt. — Die durch Adrenalin, Noradrenalin und Angiotensin ausgelösten Reaktionen des Blutdxucks, des Venendrucks sowie der Muskel — und Hautdurchblutung wurden durch DCAI qualitativ nicht verändert. Die Intensität der durch allo 3 Substanzen ausgelösten Durchblutungsabnahme in der Haut war infolge des durch DCAI stark verminderten Ausgangswertes herabgesetzt. — Tolazoline antagonisierte die Wirkungen von DCAI auf den arteriellen Blutdruck und die Hautdurchblutung. Es kommt klinisch als Antidot in Betracht. — Die Resultate wurden im Zusammenhang mit den hämodynamischen Veränderungen während der ersten (pressorischen) und zweiten (depressorischen) Phase der DCAI-Wirkung diskutiert.
    Notes: Summary The circulatory effects of a new antihypertensive agent, dichlorophenylamino-imidazoline (DCAI), were investigated in 17 normotensive and 17 hypertensive subjects. The following parameters were measured: Arterial pressure (AP), peripheral venous pressure (PVP), muscle blood flow (MBF), skin blood flow (SBF), heart rate (HR), total blood volume (TBV), and the excretion of catecholamines (CA) and vanillinmandelic acid (VMA). DCAI was administered in single doses of 0.15–0.3 mg intravenously or, in long-term experiments, in daily doses of 0.3–1.5 mg per os. — DCAI i. v. produced a short (mean: 2 min) increase in both systolic and diastolic AP, followed by a long lasting decrease. HR was slightly reduced during both phases. PVP was not significantly altered. MBF was unchanged or transiently slightly increased. Immediately after injection of DCAI, SBF sharply decreased to 50–60% of the resting flow; subsequently it rose gradually towards control values without reaching them during the time of observation. —Effective oral treatment with DCAI in 5 hypertensive patients produced no change in TBV. — The urinary excretion of CA and VMA was not significantly altered by a single i. v. dose of 0.15 mg DCAI. — The responses of AP, PVP, MBF and SBF to adrenaline, noradrenaline and angiotensin were not altered qualitatively by pro-treatment with single i. v. doses of DCAI. The duration of the depressor effect of adrenaline is, however, slightly but significantly prolonged. The decrease in SBF elicited by all 3 substances is diminished following DCAI, most probably as a consequence of the reduction in the control values caused by DCAI. Tolazoline antagonized the effects of DCAI on AP and SBF. It may be useful clinically as an antidote. — The results are discussed with regard to the hemodynamic changes occurring during the first (pressor) and second (depressor) phase of action of DCAI.
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 106 (1964), S. 371-378 
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 171 (1990), S. 845-851 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 18 (1965), S. 371-376 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 180 (1991), S. 709-715 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 13 (1963), S. 439-443 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Applied Radiation and Isotopes 44 (1993), S. 299-303 
    ISSN: 0969-8043
    Keywords: amino acid ; apatite ; calcium carbonate ; electron spin resonance ; radicals
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Applied Radiation and Isotopes 44 (1993), S. 305-309 
    ISSN: 0969-8043
    Keywords: apatite ; aragonite ; calcite ; electron spin resonance ; near-infrared reflectance ; rotating CO"2 ions ; thermally stimulated gas release ; water molecules
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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