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  • Articles  (18)
  • Environment  (18)
  • 1975-1979  (18)
  • 1978  (18)
  • Computer Science  (18)
  • Geosciences
  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-12-08
    Description: The relative frequency of appearance of discontinuities in the postsynaptic thickening, or perforations in the subsynaptic plate, increased with age and experience. Rats reared from weaning in complex or social environments had a significantly higher proportion of occipital cortical synapses with perforations than did rats reared in isolation. In addition, the relative frequency of these perforations more than tripled between 10 and 60 days of age. Shifts in the frequency of perforations can occur independently of changes in the size of synpases. This result suggests a new potential mechanism of synaptic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greenough, W T -- West, R W -- DeVoogd, T J -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1096-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715459" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cerebral Cortex/ultrastructure ; Environment ; Male ; Occipital Lobe/*ultrastructure ; Rats ; Synapses/ultrastructure ; Synaptic Membranes/*ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-10-20
    Description: Retinal growth in young Sebastes diploproa involves the succession of three distinct cone patterns. Development of the final pattern with the loss of single cones occurs in close temporal association with a permanent migration from the surface to deep water. The results suggest that loss of single cones depends upon the change in environment and that the loss occurs through fusion to double elements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boehlert, G W -- New York, N.Y. -- Science. 1978 Oct 20;202(4365):309-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694534" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Environment ; Fishes/*physiology ; Light ; Photoreceptor Cells/*physiology ; Retina/ultrastructure ; Species Specificity ; Trout/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-12-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1978 Dec 22;202(4374):1265-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725600" target="_blank"〉PubMed〈/a〉
    Keywords: DNA, Recombinant/*standards ; Environment ; Environmental Pollution/prevention & control ; Government Regulation ; Legislation as Topic ; Research Design/*standards ; Risk Assessment ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-03-10
    Description: Despite asynchrony, saccades of left and right eyes of African chameleons had similar timing statistics. Prominent qualitative aspects of these statistics did not change if one or both eyes were masked. Evidently, an internal stochastic process regulated chameleon saccade generation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mates, J W -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1087-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628832" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Environment ; *Eye Movements ; Functional Laterality ; Lizards/*physiology ; *Saccades ; Stochastic Processes ; Vision, Ocular
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-04-21
    Description: Beginning at different ages in their preschool years, groups of chronically undernourished children from Colombian families of low socioeconomic status participated in a program of treatment combining nutritional, health care, and educational features. By school age the gap in cognitive ability between the treated children and a group of privileged children in the same city had narrowed, the effect being greater the younger the children were when they entered the treatment program. The gains were still evident at the end of the first grade in primary school, a year after the experiment had ended.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKay, H -- Sinisterra, L -- McKay, A -- Gomez, H -- Lloreda, P -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):270-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635585" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Child ; Child, Preschool ; Cognition/*physiology ; Education ; Environment ; Humans ; Learning Disorders/*prevention & control ; Nutrition Disorders/diet therapy/*physiopathology ; Nutritional Physiological Phenomena ; Socioeconomic Factors ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-05-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ryan, A J -- New York, N.Y. -- Science. 1978 May 26;200(4344):919-24.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/644334" target="_blank"〉PubMed〈/a〉
    Keywords: Athletic Injuries/prevention & control/rehabilitation/therapy ; Environment ; Forecasting ; Hemodynamics ; Humans ; Muscles/physiology ; Nutritional Physiological Phenomena ; Physical Education and Training ; Physical Endurance/drug effects ; Physical Fitness ; Recreation ; Respiration ; *Sports Medicine/trends ; Superstitions
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1978-06-23
    Description: In all species studied, the medial preoptic area has been found to be necessary for male copulatory behavior. No recovery of sexual function from the medial preoptic area lesions appears to have been reported. This study demonstrates that rats with large lesions of the medial preoptic area exhibit adult male sexual behavior when the surgery is performed prepuberally and the rats have interacted socially with peers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Twiggs, D G -- Popolow, H B -- Gerall, A A -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1414-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663624" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Copulation/*physiology ; Environment ; Hypothalamus/*physiology ; Male ; Preoptic Area/*physiology ; Rats ; *Sexual Maturation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-03-17
    Description: During a procedure to monitor carbon monoxide (CO) concentrations inside a traveling car, it was discovered that CO emissions from individual passing vehicles produced accurately measurable increases in the CO concentration. The CO produced by individual vehicles varied by three orders of magnitude; this finding demonstrates that a relatively small number of cars can be responsible for a high percentage of total vehicle CO Emissions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chaney, L W -- New York, N.Y. -- Science. 1978 Mar 17;199(4334):1203-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/75569" target="_blank"〉PubMed〈/a〉
    Keywords: Automobile Driving ; Automobiles/standards ; Carbon Monoxide/*analysis ; Environment ; Rural Population ; United States ; Urban Population ; Vehicle Emissions/*analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 1978-06-30
    Description: Mercury concentrations in Pacific hake increase with fish size and with the latitude of collection. While the mercury-size trend is consistent with data for other species, the latitudinal trend is opposite to that reported for other fishes over the same geographical area. Consequently, latitudinal trends of mercury concentrations in fishes do not necessarily indicate trends of mercury concentrations in water. Food habits and metabolism may cause the observed variations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cutshall, N H -- Naidu, J R -- Pearcy, W G -- New York, N.Y. -- Science. 1978 Jun 30;200(4349):1489-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663631" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Environment ; Fishes/*metabolism ; Mercury/*metabolism ; Water Pollutants/*metabolism ; Water Pollutants, Chemical/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-06-23
    Description: The city of Warsaw was razed at the end of World War II and rebuilt under a socialist government whose policy was to allocate dwellings, schools, and health facilities without regard to social class. Of the 14,238 children born in 1963 and living in Warsaw, 96 percent were given the Raven's Progressive Matrices Test and an arithmetic and a vocabulary test in March to June of 1974. Information was collected on the families of the children, and on characteristics of schools and city districts. Parental occupation and education were used to form a family factor, and the district data were collapsed into two factors, one relating to social marginality, and the other to distance from city center. Analysis showed that the initial assumption of even distribution of family, school, and district attributes was reasonable. Mental performance was unrelated either to school or district factors; it was related to parental occupation and education in a strong and regular gradient. It is concluded that an egalitarian social policy executed over a generation failed to override the association of social and family factors with cognitive development that is characteristic of more traditional industrial societies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Firkowska, A N -- Ostrowska, A -- Sokolowska, M -- Stein, Z -- Susser, M -- Wald, I -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1357-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663616" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; *Cognition ; Educational Status ; Environment ; Humans ; Occupations ; Poland ; Socioeconomic Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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