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  • American Association for the Advancement of Science (AAAS)  (13)
  • 1980-1984  (13)
  • 1965-1969
  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1980-08-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, A L -- Rossini, F A -- Chubin, D E -- Connolly, T -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):966.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17747211" target="_blank"〉PubMed〈/a〉
    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: 1981-11-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, W M -- Smith, D H Jr -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):862.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17782425" target="_blank"〉PubMed〈/a〉
    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
    Publication Date: 1981-11-13
    Description: Coral reefs of north Jamaica, normally sheltered, were severely damaged by Hurricane Allen, the strongest Caribbean hurricane of this century. Immediate studies were made at Discovery Bay, where reef populations were already known in some detail. Data are presented to show how damage varied with the position and orientation of the substraturn and with the shape, size, and mechanical properties of exposed organisms. Data collected over succeeding weeks showed striking differences in the ability of organisms to heal and survive.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woodley, J D -- Chornesky, E A -- Clifford, P A -- Jackson, J B -- Kaufman, L S -- Knowlton, N -- Lang, J C -- Pearson, M P -- Porter, J W -- Rooney, M C -- Rylaarsdam, K W -- Tunnicliffe, V J -- Wahle, C M -- Wulff, J L -- Curtis, A S -- Dallmeyer, M D -- Jupp, B P -- Koehl, M A -- Neigel, J -- Sides, E M -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):749-55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17744383" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    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: 1983-04-22
    Description: Monkeys in which nerves innervating the flexor muscles of the forearm and hand (the ulnar or the median nerve) had been surgically cross-united with the nerve innervating the extensor muscles (the radial nerve), and vice versa, showed excellent (ulnar-radial crosses) to moderate (median-radial crosses) control of movement performance after regeneration. Antagonistic movement responses were seen occasionally, but these were corrected almost immediately. Stimulation of the crossed nerves showed that they had innervated the antagonistic muscle groups. The results reveal the capacity of the primate central nervous system to adapt to gross disturbances imposed on the execution of movements by changes in peripheral innervation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brinkman, C -- Porter, R -- Norman, J -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):438-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836289" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fingers/physiology ; Forearm/*innervation/physiology ; Hand/innervation/physiology ; Humans ; Macaca fascicularis ; Macaca nemestrina ; Median Nerve/physiology ; *Movement ; *Neuronal Plasticity ; Radial Nerve/physiology ; Thumb/physiology ; Ulnar Nerve/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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  • 5
    Publication Date: 1983-09-16
    Description: The saccadic system accurately compensates for perturbations of eye position produced by microstimulation of the superior colliculus. This requires that information about the stimulation-induced change in eye position be provided by an extraretinal source--either proprioceptive endings in extraocular muscles or a centrally generated corollary discharge. It is shown that compensation remains intact after elimination of extraocular muscle proprioception, demonstrating that corollary discharge provides accurate eye position information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guthrie, B L -- Porter, J D -- Sparks, D L -- F32 EY05651/EY/NEI NIH HHS/ -- P30 EY03039/EY/NEI NIH HHS/ -- R01 EY01189/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1193-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Eye Movements ; Macaca mulatta ; Oculomotor Muscles/*physiology ; Photic Stimulation ; Proprioception ; *Saccades ; Superior Colliculi/*physiology
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    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: 1984-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, G -- New York, N.Y. -- Science. 1984 Mar 30;223(4643):1401-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17746047" target="_blank"〉PubMed〈/a〉
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  • 7
    Publication Date: 1982-06-11
    Description: Surface chemistry of both particles and animals is important in filter feeding at low Reynolds number. Daphnia magna, fed mixtures of three sizes of polystyrene particles, retained particles that were smaller than the mesh size of the animals (1.0 micrometer) at greater efficiencies than predicted by a sieving model. Retention efficiency of the smallest particles (0.5 micrometer) was increased when negative surface charge on the particles was neutralized, and retention was decreased when a nonionic surfactant was, added to reduce wettability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gerritsen, J -- Porter, K G -- New York, N.Y. -- Science. 1982 Jun 11;216(4551):1225-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17830583" target="_blank"〉PubMed〈/a〉
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    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: 1981-02-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, R -- New York, N.Y. -- Science. 1981 Feb 27;211(4485):930-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17819034" target="_blank"〉PubMed〈/a〉
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  • 9
    Publication Date: 1983-03-04
    Description: Six structural homologs of spermidine and five of its precursor, putrescine, were studied for their ability to prevent cytostasis of cultured L1210 leukemia cells induced by alpha-difluoromethylornithine (DFMO), a specific inhibitor of putrescine biosynthesis. High-performance liquid chromatography and competition studies with spermidine indicated that the homologs, which vary in the length of the carbon chain separating the amines, penetrated the cells. The structural specificity of the spermidine carrier was defined. Three of the six spermidine homologs supported cell growth during a 48-hour incubation in the presence of DFMO, indicating that a two-carbon extension of spermidine structure was tolerated for biological function. Two of the five putrescine homologs supported growth after being converted by the cells to their respective spermidine homologs. The central nitrogen of spermidine appears to be essential for function since diamines of chain length comparable to that of spermidine did not prevent DFMO cytostasis. No more than 15 percent of the spermidine normally present in L1210 cells was required for cell proliferation in the presence of DFMO.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, C W -- Bergeron, R J -- CA-22153/CA/NCI NIH HHS/ -- CA-24538/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1083-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6823570" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Division ; *Cell Physiological Phenomena ; Eukaryotic Cells/*physiology ; Leukemia L1210/pathology ; Mice ; Ornithine Decarboxylase Inhibitors ; Putrescine/physiology ; Spermidine/analogs & derivatives/*physiology ; Structure-Activity Relationship
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  • 10
    Publication Date: 1981-05-22
    Description: Fossil zooplankton fecal pellets found in thinly bedded marine and lacustrine black shales associated with phosphate, oil, and coal deposits, link the deposition of organic matter and biologically associated minerals with planktonic ecosystems. The black shales were probably formed in the anoxic basins of coastal marine waters, inland seas, and rift valley lakes where high productivity was supported by runoff, upwelling, and outwelling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, K G -- Robbins, E I -- New York, N.Y. -- Science. 1981 May 22;212(4497):931-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17830191" target="_blank"〉PubMed〈/a〉
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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