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  • 1995-1999  (3,969)
Collection
Keywords
Publisher
Years
Year
  • 1
    Monograph available for loan
    Monograph available for loan
    Natural resource and environmental economics (1996)
    London : Longman
    Details Availability
    Call number: PIK B 160-01-0152 ; PIK B 160-03-0052
    Type of Medium: Monograph available for loan
    Pages: 564 p.
    Edition: 2. ed.
    ISBN: 0582368766
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Branch Library: PIK Library
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  • 2
    Series available for loan
    Series available for loan
    Definition and realization of the International Celestial Reference System by VLBI astrometry of extragalactic objects (1997)
    Paris : Observatoire de Paris
    Associated volumes
    Details Availability
    Call number: SR 95.0116(23)
    In: IERS technical note
    Type of Medium: Series available for loan
    Pages: Getr. Zählung
    Series Statement: IERS technical note 23
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    Bottled-Water Quality in Metropolitan Mexico City (1999)
    Springer
    Water, air & soil pollution 113 (1999), S. 217-226 
    Details
    ISSN: 1573-2932
    Keywords: bottled water ; bacteriological quality and physico-chemicalquality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Bacteriological and physico-chemical parameters of 265 samples from 39 brands sold in 5-gallon plastic and glass bottles and 2-5 L plastic containers were analyzed to determine the quality of bottled water distributed in Mexico City. Tests included fecal and total coliform counts, alkalinity, total hardness, chloride, calcium and magnesium concentrations, pH and conductivity. Correlation and cluster analyses and ANOVA were carried out, and a comparison made of the averages with the maximum permissible levels established in the Official Mexican Norms. Concerning the investigated parameters no differences (p 〉 0.05) between the brands were found. Physico-chemical parameters were studied and all the samples were within the permissible limits. Most samples taken from the 5-gallon containers exceeded the maximum bacteriological limits. It was concluded that the bacteriological quality of the brands studied was extremely variable. Appropriate sanitary measures, should be established to control this aspect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005088011681
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  • 4
    Electronic Resource
    Electronic Resource
    Determination of the alcohol denaturants denatonium benzoate (bitrex) and diethyl phthalate by direct flow injection APCI-MS analysis (1997)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 20 (1997), S. 321-324 
    Details
    ISSN: 0935-6304
    Keywords: Denaturants ; Bitrex ; Dithyl phthalate ; APCI-MS ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The recently developed tandem technique, mass spectroscopy with atmospheric-pressure chemical ionization (APCI-MS) coupled with direct flow injection, was applied to the determination of Bitrex (denatonium benzoate) and diethyl phthalate in ethanol. The compounds were indentified from their total-ion chromatograms(m/z 50-500) and, simultancously, quantified using selected-ion chromatograms recorded at m/z 223 for diethyl phthalate and m/z 325 for Bitrex. Operating conditions were optimized for soft ionization (positive ion-mode) with fragmentation limited to that necessary for analyte identification, which was by the external-standard method. Calibration curves were rectilinear in the concentration rages 2-30 μg ml-1 (Bitrex) and 0.075-1.2% v/v (diethyl phthalate); measurement precision (RSDs were 11.48% for Bitrex and 2.22% for diethyl phthalate), and detection limits (0.017 μg ml-1 and 0.010% v/v, respectively) were adequate for simiultaneous quantitation and with high sensitivity. The lack of any sample pretreatment and the use of flow-injection analysis meant that the procedure was moere straightforward and rapid than previously reported methods.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240200605
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  • 5
    Electronic Resource
    Electronic Resource
    Raman spectroscopy of laser ablated BaTiO3/YBa2Cu3O7−x thin film bilayer structure (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 750-752 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Raman scattering was used to characterize BaTiO3/YBa2Cu3O7−x thin film bilayer structure grown by pulsed laser ablation (PLA). The Raman spectra were compared with the x-ray diffraction (XRD) spectra. The Raman peaks due to the tetragonal phase of BaTiO3 (BTO) and to the 123 phase YBa2Cu3O7−x (YBCO) were observed at room temperature. XRD results showed that the BaTiO3 thin film has highly c-axis oriented tetragonal phase and is fully epitaxial. However, some impurity phases were observed from the Raman spectrum of the BaTiO3 thin film. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.116730
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  • 6
    Electronic Resource
    Electronic Resource
    FUNGAL BIOTA ISOLATED FROM SPANISH CHEESES (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food safety 18 (1998), S. 0 
    Details
    ISSN: 1745-4565
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Fungal biota, with special reference to the genus Penicillium, was studied in 52 samples of commercial cheeses (10 fresh, 17 semiripened and 25 ripened) made from different types of milk (cow, ewe, goat and mixed) produced in southern Spain. In 41 of the total of cheeses analyzed (79%) molds were isolated. Penicillium was identified in 63% of the samples, Mucor spp. in 27%, Geotrichum candidum in 17% and Cladosporium herbarum in 10%; eleven other fungal genera were detected ranging from 2 to 4%. Thirty-five species of Penicillium were analyzed with the following distribution: 7 in fresh cheese, 16 in semiripened cheese and 30 in ripened cheese. The incidence of Penicillium spp. was also greater in the cheeses with a higher degree of ripeness, i.e. 20% in fresh cheese, 71% in the semiripened and 76% in the ripened cheese.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4565.1998.tb00210.x
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  • 7
    Electronic Resource
    Electronic Resource
    Microbial origin of the abdominal swelling affecting farmed larvae of gilt-head seabream, Sparus aurata L. (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 27 (1996), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The aetiological agents of the abdominal swelling affecting farmed larvae of gilt-head seabream, Sparus aurata L., were studied. Four Vibrio strains were isolated from larvae of S. aurata affected by this disease, and all strains reproduced the disease in healthy larvae under controlled infection experiments, producing a significant increase of the mortality rates compared to the control (non-inoculated larvae). Several enzymatic properties, which can act as .virulence factors, were demonstrated both in the extracellular products (ECPs) and In live cells of the strains tested. Histopathological examinations of the infected fish larvae revealed important changes of the anterior intestine and liver characterized by a marked hyperthrophy of the intestinal epithelium and hepatocytes, and by a separation of the mucosal and submucosal layers in the digestive tube. These histological alterations were associated with the constant presence of cocobacillar bacteria in the anterior intestine and in the liver. However, the precise pathogenic mechanisms of the strains tested have not been completely elucidated yet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1996.tb01259.x
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  • 8
    Electronic Resource
    Electronic Resource
    First attempt of interspecific hybridization between the shrimps Penaeus kerathurus Forskäl,1775 and Penaeus japonicus Bate, 1888 (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 28 (1997), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: This paper reports preliminary studies designed to evaluate hybridization through natural mating and artificial insemination between female Penaeus japonicus Bate, 1888 and male Penaeus kerathurus Forskäl, 1775. Although both species were able to mature in captivity, natural copulation was not achieved.Different techniques, including manual squeezing in the base of the fifth pair of pereiopods, electrical stimulation and dissection, were used for the artificial insemination experiments. However, only dissection gave spermatophores. Stained sperm showed no malformations and its viability was very high. Seven out of 10 inseminations (70%) produced eggs, but the development of embryos was abnormal. It is suggested that the high genetic distance between these species is responsible for these results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1997.t01-1-00857.x
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  • 9
    Electronic Resource
    Electronic Resource
    First Description of the Lorica of Metacystis Truncata and Its Occurrence On Thalassia Testudinum (1999)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 46 (1999), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . Metacystis truncata, a prostomatid loricate ciliate, was found attached to Thalassia tesudinum, a dominant seagrass of the coral reef lagoons of Veracruz, Mexico. the morphology of the ciliate and its lorica were studied in living and stained specimens and in those prepared for scanning electron microscopy. the lorica is cylindrical (64.6-115μm) with a well-developed anterior neck and a sac reinforced by 15-26 rings. Cell body size is variable (19-91 μm live), from ovoid to elongate: the terminal protruding vacuole is conspicuous in small and medium-sized individuals; the macronucleus is terminal in the elongate forms, or located near the mid-body in the ovoid ones. This marine prostomatid colonizes both natural and artificial substrates such as narrow polyethylene strips placed in an aquarium. the highest density was found in the summer. the present study represents the first description of the lorica of M. truncata and the first record on T. testudinum shoots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1999.tb05130.x
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  • 10
    Electronic Resource
    Electronic Resource
    Potentiometric study of the acid-base equilibrium of loprazolam at 25 °C in 0.1M NaCl medium (1996)
    Springer
    Microchimica acta 122 (1996), S. 133-141 
    Details
    ISSN: 1436-5073
    Keywords: acid-base equilibrium ; potentiometry ; solvent composition correlation ; benzodiazepine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The acid-base behaviour of Loprazolam has been studied using an automated potentiometric titration system. The temperature was kept constant at 25 °C and the ionic medium was 0.1 mol dm−3 NaCl in different ethanol-water mixtures (5–20%). The values of the constants obtained at the different ethanol compositions have been extrapolated to give the corresponding stoichiometric constant in water, log β = 6.39 ± 0.15
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01252415
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