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  • 1
    Monograph available for loan
    Monograph available for loan
    Tropical forests: management and ecology (1995)
    New York [u.a.] : Springer-Verl.
    Associated volumes
    Details Availability
    Call number: PIK N 531-95-0263
    In: Ecological studies
    Type of Medium: Monograph available for loan
    Pages: XIV, 461 p.
    ISBN: 038794320x , 3-540-94320-x
    Series Statement: Ecological studies 112
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of dexamethasone in premature neonates (1996)
    Springer
    European journal of clinical pharmacology 49 (1996), S. 477-483 
    Details
    ISSN: 1432-1041
    Keywords: Dexamethasone ; Premature neonates ; pharmacokinetics ; bronchopulmonary dysplasia ; infant ; newborn
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: Dexamethasone is frequently used in premature neonates with bronchopulmonary dysplasia, however little is known about its disposition in this population. Methods: We evaluated the pharmacokinetics of dexamethasone in 9 premature neonates with a mean gestational age of 27.3 weeks and a postnatal age of 21.8 days. Results: There was a strong relationship between clearance (4.96 ml·min−1·kg−1) and gestational age (r=0.884). Pharmacokinetic parameters were grouped based on a gestational age of less than 27 weeks (Group I) and greater than 27 weeks (Group II). Mean clearance in group I and group II was 1.69 and 7.57 ml·min−1·kg−1, respectively. Mean distribution volume in group I and II was 1.26 and 2.19 l·kg−1, respectively. No significant relationships were noted between the disposition of dexamethasone and ventilator requirements or adverse effects. Conclusion: The pharmacokinetics of dexamethasone in premature neonates was related to gestational age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00195934
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  • 3
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of dexamethasone in premature neonates (1996)
    Springer
    European journal of clinical pharmacology 49 (1996), S. 477-483 
    Details
    ISSN: 1432-1041
    Keywords: Key words Dexamethasone ; Premature neonates; pharmacokinetics ; bronchopulmonary dysplasia ; infant: newborn
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract. Objective: Dexamethasone is frequently used in premature neonates with bronchopulmonary dysplasia, however little is known about its disposition in this population. Methods: We evaluated the pharmacokinetics of dexamethasone in 9 premature neonates with a mean gestational age of 27.3 weeks and a postnatal age of 21.8 days. Results: There was a strong relationship between clearance (4.96 ml⋅min−1⋅kg−1) and gestational age (r = 0.884). Pharmacokinetic parameters were grouped based on a gestational age of less than 27 weeks (Group I) and greater than 27 weeks (Group II). Mean clearance in group I and group II was 1.69 and 7.57 ml ⋅min−1⋅kg−1, respectively. Mean distribution volume in group I and II was 1.26 and 2.19 l⋅kg−1, respectively. No significant relationships were noted between the disposition of dexamethasone and ventilator requirements or adverse effects. Conclusion: The pharmacokinetics of dexamethasone in premature neonates was related to gestational age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050053
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of altitude (4300 M) on the pharmacokinetics of caffeine and cardio-green in humans (1995)
    Springer
    European journal of clinical pharmacology 48 (1995), S. 167-170 
    Details
    ISSN: 1432-1041
    Keywords: Caffeine ; Cardio-green ; Indocyanine Green ; altitude ; metabolism ; pharmacokinetics ; hypoxia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract The effects of chronic exposure to high altitude on the pharmacokinetics of caffeine and cardiogreen (ICG) were examined in eight healthy males (23–35 y) at sea level (SEA) and following 16 days residence at 4300 m (ALT). ICG (0.5 mg · kg−1) was administered as an intravenous bolus and caffeine (4 mg · kg−1) in an orally ingested solution. The concentration of ICG, caffeine, and the primary metabolites of caffeine (MET) were determined in serial blood samples and their pharmacokinetics computed. In comparison to SEA, ALT resulted in a significant decrease in the caffeine half-life (t1/2, 4.7 vs 6.7 h) and area under the curve (2.5 vs 3.7 g · 1−1 · min−1), and increased clearance (117 vs 86 ml · min−1 · 70 kg−1). In ALT the area under the curve of ICG significantly decreased (85 vs 207 mg · 1−1 · min−1) and the volume of distribution and clearance increased (5.2 vs 2.41 and 532 vs 234 ml · min−1 respectively) compared to SEA. There was a significant increase in the AUC ratio of MET to caffeine indicating that either metabolite formation or elimination was increased in ALT. These results demonstrate that in humans, chronic exposure to 4300 m results in the modification of the pharmacokinetics of caffeine and ICG.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00192744
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  • 5
    Electronic Resource
    Electronic Resource
    NINETY YEARS OF PLANT ECOLOGY RESEARCH IN PUERTO RICO (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 776 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb17413.x
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  • 6
    Electronic Resource
    Electronic Resource
    Catalytic Activities of Crude Enzyme Fractions from Monterey Sardine (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 62 (1997), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Catalytic activities in sarcoplasmic fluid of Monterey sardine (Sardinops sagax caerulea) were identified. Hydrolysis at pH 7.6 on hippuryl-L-phenylalanine and hippuryl-L-arginine suggested the presence of carboxypeptidase A and B. Proteolysis on glutaryl-L-phenylalanine-p-nitroanilide, and inhibition by CuSO4, phenylmethylsulfonyl fluoride and N-p-tosyl-L-lysil chloromethyl ketone, confirmed presence of a chymotrypsin-like proteinase and other serine enzymes. No hydrolysis on α-N-benzoyl-D,L-arginine-p-nitroanilide occurred. Leucine aminopeptidase was detected by hydrolysis on L-leucyl-β-naplithylamide-HCl. Activity at pH 3 proved the presence of an acid proteinase but a slight inhibition by EDTA suggested the involvement of a cathepsin D-like enzyme. Cathepsins A and B and collagenase were not detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1997.tb15019.x
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of surface coverage on the effective optical properties of porous silicon modeled as a Si-wire array (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 1923-1928 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effective dielectric function, effective absorption coefficient and effective refractive index for a model of porous silicon (PS) are calculated using the volume and surface averaging method. The model consists of periodic Si wires with different surface coverages. This approach allows to obtain analytical results within certain approximations. The method uses experimental parameters to characterize the bulk and the surface. We choose the bulk c-Si, and cover it with three different possible surface skins: siloxanes, a-Si:H and SiO2. The results are compared with PS experimental data and other theoretical approaches for silicon wires. We obtain good agreement for certain coatings. Our results emphasize the important role of surface coatings in the effective response of porous silicon. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364047
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  • 8
    Electronic Resource
    Electronic Resource
    Caribbean island landscapes: indicators of the effects of economic growth on the region (1996)
    Cambridge : Cambridge University Press
    Environment and development economics 1 (1996), S. 128-136 
    Details
    ISSN: 1355-770X
    Source: Cambridge Journals Digital Archives
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S1355770X00000486
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  • 9
    Electronic Resource
    Electronic Resource
    γ-radiation-induced thermoluminescence of Fe-doped silica gels (1999)
    Springer
    Journal of materials science 10 (1999), S. 623-625 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Silica gels were prepared by the sol-gel method containing varying amounts of Fe. The gels were irradiated with γ-ray doses in the range from 0.3 to 11.5 kGy. The thermoluminescent response was characterized before and after irradiation. When the samples were irradiated in the range 0.3 to 1.0 kGy, no thermoluminescent response was detected. However, when the samples were irradiated in the range from 1.0 to 11.5 kGy, they showed a clear thermoluminescent behavior and a linear dose–response relationship over the whole irradiation range, opening up the possibility of employing this system as a radiation dosimeter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008956201011
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  • 10
    Electronic Resource
    Electronic Resource
    Benthos of a prerennially-astatic, saline, soda lake in Mexico (1999)
    Springer
    International journal of salt lake research 8 (1999), S. 113-126 
    Details
    ISSN: 1573-8590
    Keywords: benthic macroinvertebrates ; crater-lake ; physico-chemistry ; shallow lake ; tropical lake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The effects of multiple stressors on the benthic macroinvertebrate community were monitored in Tecuitlapa Norte, a shallow, perennially-astatic, warm, mesosaline, sodaalkaline lake in Mexico. Physico-chemical and biological variables were determined monthly for one year. Tecuitlapa Norte displayed a clear seasonal environmental pattern (dry and rainy seasons). The benthic macroinvertebrate community consisted of five species:Culicoides occidentalis sonorensis Jorgensen,Ephydra hians Say,Stratiomys sp.,Eristalis sp., andLimnophora sp. of which the first two were dominant and the rest scarce.C. occidentalis was the most important species numerically (76 percent of the total), whileE. hians dominated the biomass (73 percent of the total). Primarily salinity and secondarily pH appear to be the most important environmental factors controlling dominance of benthic organisms in Tecuitlapa Norte. Seasonal abundance dynamics of the dominant organisms was associated with phases in their reproductive cycles: environmentally-triggered (i.e., temperature rise, water-level descent) pupation and emergence periods. We concluded that whereas physical and chemical factors (i.e., salinity, pH) exerted the primary control on benthic macroinvertebrate community composition in Tecuitlapa Norte, another assembly of variables (e.g., water-level, temperature) influenced species distribution and abundance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442125
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