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  • 1
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    La estructura de la propiedad y los cultivos en Cullera (Valencia) durante el siglo XX (1978)
    Madrid : Periodicals Archive Online (PAO)
    Estudios geográficos. 39:152 (1978:agosto) 347 
    Details
    ISSN: 0014-1496
    Topics: Geography
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:6094-1978-039-52-000004
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  • 2
    Electronic Resource
    Electronic Resource
    Responses of an estuarine population of the blue mussel Mytilus edulis to heated water from a steam generating plant (1976)
    Springer
    Marine biology 34 (1976), S. 177-189 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An entire bed of the blue mussel Mytilus edulis, consisting of 5,000 individuals/m2, died during June, 1971 in the effluent canal of a steam generating plant when the temperature increased above 27°C. Similarly, the population in the intake canal disappeared when temperatures rose above 27°C in August. Laboratory studies showed that M. edulis could not tolerate continuous temperatures above 27°C, and feeding stopped shortly after the mussels were exposed to 25°C. Histopathological studies indicated that the cause of death of this bivalve was associated with degeneration of the frontal and laterofrontal cilia of the columnar epithelium of the gill filaments. In conjuction with this, there was necrosis and sloughing of the epithelium of the intestinal diverticula. Extensive amoebocytic infiltration was noted in the byssogenous cavity, gill filaments and stomach wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390760
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  • 3
    Electronic Resource
    Electronic Resource
    Alteration of cholesterol synthesis in rat liver as induced by 4-methyl-5-hydroxy valeric acid (1976)
    Springer
    Cellular and molecular life sciences 32 (1976), S. 1138-1140 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The rate of cholesterogenesis in rat liver, measured by the incorporation of labelled acetate or mevalonate into cholesterol, was significantly supressed by the use of 4-methyl-5-hydroxy valeric acid sodium salt. This effect cannot be explained by changes in HMG CoA reductase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01927589
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  • 4
    Electronic Resource
    Electronic Resource
    Early diagnosis of renal malfunction in diabetics (1979)
    Springer
    Diabetologia 16 (1979), S. 165-171 
    Details
    ISSN: 1432-0428
    Keywords: Diabetes mellitus ; proteinuria ; nephropathy ; SDS-PAGE
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Renal damage is one of the most serious complications of diabetes mellitus. Most methods used to detect kidney malfunction show abnormalities only in the advanced stages. To find whether sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) of the urinary proteins could give earlier indications of kidney malfunction, 68 patients with maturity-type diabetes and 22 with juvenile-type diabetes have been studied. Quantitative determination of proteinuria, urinary lysozyme, creatinine clearance and SDS-PAGE of urinary proteins were performed. Diabetics of both types with disease of more than 10 years duration showed significantly greater proteinuria and lysozymuria, higher serum creatinine values and lower creatinine clearances than their respective controls. Such differences were not seen in patients with diabetes of short duration. SDS-PAGE allowed detection of a higher proportion of patients with abnormalities. Thus, 3 out of 10 patients with juvenile diabetes of short duration showed predominant excretion of low molecular weight proteins, suggesting tubular dysfunction. This was not observed in the other groups of diabetics where increased elimination of high molecular weight proteins was noted, suggesting glomerular damage. SDS-PAGE revealed a higher frequency of abnormalities than other tests of renal function, with 67% abnormal in juvenile-type diabetes of greater than 10 years duration, 45% in maturity-type diabetes of less than 10 years duration and 76% abnormal in maturity-type diabetes of greater than 10 years duration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01219793
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  • 5
    Electronic Resource
    Electronic Resource
    Changes in serum and cerebrospinal fluid enzyme activity after head injury (1976)
    Springer
    Acta neurochirurgica 35 (1976), S. 3-13 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We studied simultaneously in serum (S) and CSF (L) the enzyme activities of GOT, GPT, LDH, ICDH, MDH, ALD, and CPK in 28 patients with head injuries divided into three groups according to the severity of the trauma. We found a correlation between severity of brain lesion and enzyme activity. The best correlation was found for SGOT, SCPK, LGOT, LLDH, LMDH and LCPK. We do not believe that enzyme activity is of prognostic value. We think that further studies should be made of the specific isoenzymes of the Central Nervous System.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405928
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  • 6
    Electronic Resource
    Electronic Resource
    Fine cytochemical detection of acid mucopolysaccharides in growing hyphae of Neurospora crassa (1976)
    Springer
    Histochemistry and cell biology 48 (1976), S. 121-127 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The presence of mucopolysaccharides (MP) in Neurospora crassa hyphae was detected in samples of cultures from 4 h to 5 days. Using a modification of the method of Rothman (1969), acid MP were identified by electron microscopy in vesicles located at the apex, septae, and throughout the cytoplasm of the hyphae. The size, number, and localization of these vesicles was related to the stage of growth of the fungus. The mechanisms of release and transport of these macromolecules are compared to the process of secretion in cells endowed with a better developed endoplasmic reticulum and Golgi system. The specificity of the method was evaluated histochemically. The structures displaying greater electron density corresponded to the Alcian blue positive areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00494550
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  • 7
    Electronic Resource
    Electronic Resource
    Critical thermal maxima of two species of estuarine fish (1977)
    Springer
    Marine biology 41 (1977), S. 141-145 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Critical thermal maxima (CTM) were determined for winter flounder (Pseudopleuronectes americanus, Walbaum) and scup (Stenotomus chrysops, L.), acclimated to ambient water temperature or constant increments above ambient. The acclimation regimes simulated a natural environment by tracking the temperature fluctuations in Point Judith Pond, a small Rhode Island estuary. An elevation in CTM from 30.2° to 35.6°C was observed for scup as the mean acclimation temperature increased from 14.8° to 22.2°C. CTM for flounder increased from 26.4° to 32.4°C over an acclimation range of 4.2° to 23.0°C. The use of CTM studies for predicting the effects of heated effluents is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394021
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  • 8
    Electronic Resource
    Electronic Resource
    Polyanhydride-imides (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 55 (1976), S. 85-96 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Acht Imid-dicarbonsäuren wurden aus Trimellitsäureanhydrid, Pyromellitsäureanhydrid und verschiedenen aliphatischen Aminocarbonsäuren (HOOC—(CH2)n—NH2, n = 1,2,3,5) synthetisiert.Die entsprechenden Copolyimid-anhydride wurden nach den üblichen Methoden in Anwesenheit von Essigsäureanhydrid hergestellt1,2.Die Copolyimide haben eine aliphatisch-aromatische Struktur; ihre Eigenschaften wurden in Abhängigkeit der Struktur untersucht und durch IR-Spektren, Elementaranalyse und viskosimetrische Messungen charakterisiert. Löslichkeit, Hydrolysierbarkeit und Wärmestabilität wurden bestimmt.
    Notes: Eight imide-diacids were synthesized from trimellitic anhydride, pyromellitic anhydride and aminoacids of the formula HOOC—(CH2)n—NH2, with n = 1,2,3,5. From them, polyanhydride-imides were obtained following a general method of formation of polyanhydrides in the presence of acetic anhydride1,2.These co-polyimides have an aliphatic-aromatic structure and the relation between the general properties and the amount of the aliphatic part in the repeat unit was studied. IR spectroscopy, elemental analysis and viscosity measurements were used for the characterization. Studies of solubility, hydrolysis resistance and thermal properties were also made.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1976.050550107
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  • 9
    Electronic Resource
    Electronic Resource
    Homopolymers: A theoretical study of neighbor-group effects in repeated periodate oxidation of polysaccharides. I (1977)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 15 (1977), S. 321-331 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Periodate oxidation of polysaccharides shows inhibitory neighbor effects due to hemiacetal formations. A second periodate oxidation may be performed after removal of all protecting hemiacetals formed in the first oxidation.We give the theoretical analysis of the kinetics of such repeated oxidations. For complete protection the oxidation limit of the second reaction, as function of the extent of the first oxidation, lies between 41.1 and 43.2%, in good agreement with experiments on alginate. For general protection effects we calculate the degree of oxidation and the mean sequence lengths of the three types of monomer units. Second-oxidation data, in contradistinction to first-oxidation results, allow separate determination of left-and right-hand inhibitory effects.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1977.180150212
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  • 10
    Electronic Resource
    Electronic Resource
    Sequential analysis by cooperative reactions on copolymers I. A theoretical treatment (1976)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 14 (1976), S. 645-648 
    Details
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1976.130141102
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