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  • 1
    Electronic Resource
    Electronic Resource
    Botanical collections at risk (1994)
    [s.l.] : Nature Publishing Group
    Nature 371 (1994), S. 9-9 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - We wish to draw your readers' attention to the outcome of an important conference held by UNESCO and the International Council of Scientific Unions (ICSU) at the Komarov Botanical Institute in St Petersburg in December 1993. Among other things, the status and the future of botanical ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/371009a0
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    Paper (German National Licenses)
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  • 2
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    Shear wave splitting observations in the northern Los Angeles basin, Southern California (1994)
    In:  Bull. Seism. Soc. Am., Chengdu, Sichuan, China, 4, vol. 84(2), no. B3, pp. 307-323, pp. 1334, (ISSN: 1340-4202)
    Details
    Publication Date: 1994
    Keywords: AnisotropyS ; Seismology ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Seismic guided waves trapped in the fault zone of the Landers, California, earthquake of 1992 (1994)
    In:  J. Geophys. Res., Chengdu, Sichuan, China, 4, vol. 99, no. B3, pp. 11705-11722, pp. 1334, (ISSN: 1340-4202)
    Details
    Publication Date: 1994
    Keywords: Fault zone ; Seismology ; Waves ; Channel waves ; Earthquake ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Seismic trapped modes in the oroville and san andreas fault zones (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-17
    Description: Three-component borehole seismic profiling of the recently active Oroville, California, normal fault and microearthquake event recording with a near-fault three-component borehole seismometer on the San Andreas fault at Parkfield, California, have shown numerous instances of pronounced dispersive wave trains following the shear wave arrivals. These wave trains are interpreted as fault zone-trapped seismic modes. Parkfield earthquakes exciting trapped modes have been located as deep as 10 kilometers, as shallow as 4 kilometers, and extend 12 kilometers along the fault on either side of the recording station. Selected Oroville and Parkfield wave forms are modeled as the fundamental and first higher trapped SH modes of a narrow low-velocity layer at the fault. Modeling results suggest that the Oroville fault zone is 18 meters wide at depth and has a shear wave velocity of 1 kilometer per second, whereas at Parkfield, the fault gouge is 100 to 150 meters wide and has a shear wave velocity of 1.1 to 1.8 kilometers per second. These low-velocity layers are probably the rupture planes on which earthquakes occur.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Y G -- Leary, P -- Aki, K -- Malin, P -- New York, N.Y. -- Science. 1990 Aug 17;249(4970):763-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17756789" 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Omission of references (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGown, L B -- Li, G -- New York, N.Y. -- Science. 1994 Jul 22;265(5171):459.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17781291" 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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  • 6
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    Blockage of NF-kappa B signaling by selective ablation of an mRNA target by 2-5A antisense chimeras (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-08-05
    Description: Activation of 2-5A-dependent ribonuclease by 5'-phosphorylated, 2',5'-linked oligoadenylates, known as 2-5A, is one pathway of interferon action. Unaided uptake into HeLa cells of 2-5A linked to an antisense oligonucleotide resulted in the selective ablation of messenger RNA for the double-stranded RNA (dsRNA)-dependent protein kinase PKR. Similarly, purified, recombinant human 2-5A-dependent ribonuclease was induced to selectively cleave PKR messenger RNA. Cells depleted of PKR activity were unresponsive to activation of nuclear factor-kappa B (NF-kappa B) by the dsRNA poly(I):poly(C), which provides direct evidence that PKR is a transducer for the dsRNA signaling of NF-kappa B.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maran, A -- Maitra, R K -- Kumar, A -- Dong, B -- Xiao, W -- Li, G -- Williams, B R -- Torrence, P F -- Silverman, R H -- AI 28253/AI/NIAID NIH HHS/ -- AI 34039-02/AI/NIAID NIH HHS/ -- CA 44059/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1994 Aug 5;265(5173):789-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Cleveland Clinic Foundation, OH 44195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7914032" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/chemical synthesis/*pharmacology ; Base Sequence ; Endoribonucleases/metabolism ; Enzyme Activation ; HeLa Cells ; Humans ; Kinetics ; Molecular Sequence Data ; NF-kappa B/*antagonists & inhibitors ; Oligonucleotides, Antisense/chemical synthesis/*pharmacology ; Oligoribonucleotides/chemical synthesis/*pharmacology ; Protein-Serine-Threonine Kinases/*genetics ; RNA, Messenger/drug effects ; Signal Transduction/*drug effects ; eIF-2 Kinase
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Effective tumor vaccine generated by fusion of hepatoma cells with activated B cells (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-01-28
    Description: Fusion of BERH-2 rat hepatocellular carcinoma cells with activated B cells produced hybrid cells that lost their tumorigenicity and became immunogenic. Syngeneic rats injected with BERH-2-B hybrid cells became resistant to challenge with parental BERH-2 cells, and rats with established BERH-2 hepatomas were cured by subsequent injection of BERH-2-B cells. Both CD4+ and CD8+ cells were essential for the induction of protective immunity; however, only CD8+ cells were required for the eradication of BERH-2 tumors. The generation of hybrid tumor cells that elicit antitumor immune responses may be a useful strategy for cancer immunotherapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, Y -- Wu, M -- Chen, H -- Wang, X -- Liu, G -- Li, G -- Ma, J -- Sy, M S -- New York, N.Y. -- Science. 1994 Jan 28;263(5146):518-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tumor Immunology and Biotherapy Center, Eastern Institute of Hepatobiliary Surgery, Shanghai, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7507262" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD80/analysis ; B-Lymphocytes/*immunology ; CD4-Positive T-Lymphocytes/immunology ; Cell Fusion ; Female ; Histocompatibility Antigens Class II/analysis ; Hybrid Cells/*immunology ; Immunotherapy, Active ; Liver Neoplasms, Experimental/*immunology/prevention & control/therapy ; Lymphocyte Activation ; Neoplasm Transplantation ; Rats ; Rats, Wistar ; T-Lymphocyte Subsets/immunology ; Tumor Cells, Cultured ; Vaccination ; Vaccines/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Agmatine: an endogenous clonidine-displacing substance in the brain (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-18
    Description: Clonidine, an antihypertensive drug, binds to alpha 2-adrenergic and imidazoline receptors. The endogenous ligand for imidazoline receptors may be a clonidine-displacing substance, a small molecule isolated from bovine brain. This clonidine-displacing substance was purified and determined by mass spectroscopy to be agmatine (decarboxylated arginine), heretofore not detected in brain. Agmatine binds to alpha 2-adrenergic and imidazoline receptors and stimulates release of catecholamines from adrenal chromaffin cells. Its biosynthetic enzyme, arginine decarboxylase, is present in brain. Agmatine, locally synthesized, is an endogenous agonist at imidazoline receptors, a noncatecholamine ligand at alpha 2-adrenergic receptors and may act as a neurotransmitter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, G -- Regunathan, S -- Barrow, C J -- Eshraghi, J -- Cooper, R -- Reis, D J -- HL18974/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1994 Feb 18;263(5149):966-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and Neuroscience, Cornell University Medical College, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7906055" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/drug effects/metabolism ; Agmatine/chemistry/isolation & purification/*metabolism/pharmacology ; Animals ; Binding Sites ; Brain/enzymology/metabolism ; *Brain Chemistry ; Carboxy-Lyases/metabolism ; Cattle ; Cerebral Cortex/metabolism ; Clonidine/analogs & derivatives/metabolism ; Epinephrine/metabolism ; Imidazoline Receptors ; Neurotransmitter Agents/metabolism ; Norepinephrine/metabolism ; Rats ; Receptors, Adrenergic, alpha/metabolism ; Receptors, Drug/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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  • 9
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    Response (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reis, D J -- Li, G -- Regunathan, S -- Barrow, C J -- Cooper, R -- New York, N.Y. -- Science. 1994 Oct 21;266(5184):463-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17816689" 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Molecular Nanotube Aggregates of beta- and ggr-Cyclodextrins Linked by Diphenylhexatrienes (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-08
    Description: Linked by strings of diphenylhexatriene (DPH) molecules, beta- and gamma-cyclodextrins (CDs) can form nanotube aggregates that contain as many as approximately 20 betaCDs (20 nanometers long) or approximately 20 to 35 gammaCDs (20 to 35 nanometers long). Nanotube formation was indicated in solution, by fluorescence anisotropy and light scattering results, and on graphite surfaces, by scanning tunneling microscopy. Tubes were not observed for the smaller alphaCDs. Molecular modeling shows that CD cavity size and the rodlike DPH structure are key factors in nanotube formation. Spectra generated by proton nuclear magnetic resonance indicate the inclusion of DPH in the interior of the CDs and formation of nanotubes in betaCDs and gammaCDs only. The photophysical properties of DPH are affected by its arrangement into a one-dimensional array within the CD nanotube, possibly because of exciton formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, G -- McGown, L B -- New York, N.Y. -- Science. 1994 Apr 8;264(5156):249-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17749023" 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
    Published by American Association for the Advancement of Science (AAAS)
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