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1

Digitale Medien

A structure-activity relationship study of organophosphorus compounds (1988)

Rohrbaugh, R. H. ; Jurs, P. C. ; Ashman, W. P. ; [weitere]

s.l. : American Chemical Society

Chemical research in toxicology 1 (1988), S. 123-127

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ISSN: 1520-5010

Quelle: ACS Legacy Archives

Thema: Medizin

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/tx00002a006

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2

Digitale Medien

Plasma Spraying of Lanthanum Chromite Films for Solid Oxide Fuel Cell Interconnection Application (1997)

Kuo, Lewis J. H. ; Vora, Shailesh D. ; Singhal, Subhash C.

Westerville, Ohio : American Ceramics Society

Journal of the American Ceramic Society 80 (1997), S. 0

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ISSN: 1551-2916

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Maschinenbau , Physik

Notizen: This paper discusses a novel plasma-spraying process for depositing dense LaCrO3-based interconnection for solid oxide fuel cells (SOFCs). Calcium aluminate was mixed with LaCrO3 in a slurry containing PVA binder and spray dried to form free-flowing agglomerates. These free-flowing agglomerates were plasma sprayed onto a porous substrate of doped LaMnO3 and then heat-treated to form a gas-tight and electrically conducting interconnection. Samples of the plasma-sprayed interconnection were characterized for morphology, phase constituents, and coefficient of thermal expansion, as well as electrical resistivity and oxygen nonstoichiometry at 1000°C in the PO2 range from 1 to} 1× 10-16 atm. The calcium aluminate additive was found to facilitate densification of the interconnection, most likely through the formation of low-temperature melting phase(s) in the system Ca–Cr–Al–O. A SOFC with such a plasma-sprayed interconnection was fabricated and electrically tested. This cell exhibited good electrical performance, and the interconnection was stable under fuel cell operation conditions.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1151-2916.1997.tb02871.x

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3

Digitale Medien

Safety profile of long-term H2-antagonist therapy (1991)

LEWIS, J. H.

Oxford, UK : Blackwell Publishing Ltd

Alimentary pharmacology & therapeutics 5 (1991), S. 0

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ISSN: 1365-2036

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Medizin

Notizen: The safety profile of low-dose maintenance therapy with H2-antagonists for duodenal ulcer disease suggests that these agents can be given safely for several years and probably much longer. Because information regarding the use of these compounds for more than 10 years in large numbers of patients is lacking, the safety of these drugs should continue to be monitored. The safety profiles of famotidine and nizatidine will require several additional years of postmarking surveillance data to match the depth of our knowledge regarding cimetidine and ranitidine. Compared to a surgical approach to ulcer disease, continuous H2-blocker maintenance therapy is cost-effective and is associated with significantly less morbidity. Patents with a history of bleeding or other ulcer complication should be encouraged to remain on maintenance therapy if they do not undergo surgery. The need for extended maintenance therapy also applies to individuals with frequent symptomatic ulcer relapses, reflux oesophagitis, and a range of less common disorders.Currently, H2-blockers and sucralfate are the only agents approved by the Food and Drug Administration for maintenance therapy of duodenal ulcer disease. Experience with omeprazole is still limited, and its longterm safety profile must await the completion of controlled trials of maintenance therapy. Given the apparent long-term safety of the H2-blockers for maintenance therapy, any new agent must prove to be equally safe in the clinical arena, a task that may be indeed formidable.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1365-2036.1991.tb00748.x

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4

Unbekannt

The Difficulties of Henry James (1928)

Lewis, J. H.

Washington, etc. : Periodicals Archive Online (PAO)

Poet lore. 39:1 (1928:Spring) 117

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ISSN: 0032-1966

Thema: Anglistik, Amerikanistik

URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3208-1928-039-01-000006

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5

Digitale Medien

Positional Information in Chick Limb Morphogenesis (1973)

SUMMERBELL, D. ; LEWIS, J. H. ; WOLPERT, L.

[s.l.] : Nature Publishing Group

Nature 244 (1973), S. 492-496

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Pattern formation by the cells of a growing organism depends on coordination of changes in space and time. Evidence is presented here for the control of morphogenesis by positional information specified by an autonomous timing mechanism that operates in a “progress zone” at the tip of ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/244492a0

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6

Digitale Medien

Chimaeras and Cell Lineage in Development (1972)

LEWIS, J. H. ; SUMMERBELL, D. ; WOLPERT, L.

[s.l.] : Nature Publishing Group

Nature 239 (1972), S. 276-279

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] We must first consider the various conceivable meanings of the phrase "the initial number of progenitors" of a specific tissue. Which generation of progenitor cells of the tissue does it refer to? Three broad possibilities immediately suggest themselves. (1) The very earliest generation of ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/239276a0

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