Výsledky vyhledávání - "R. V. Williams"

Akademický článek

Autor: R. V. Williams

Publikováno v: Measurement + Control, Vol 4 (1971)

Rod and bar has been rolled for many years without the benefit of any form of gauging beyond the holding of a piece of wood against the moving stock. Quality control at present depends on retrieving processed material after cooling and using micromet

Externí odkaz: https://doaj.org/article/b298b19a94dc45968f079553a7227faf

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Prenatally diagnosed pseudoaneurysm of mitral–aortic intervalvular fibrous area

Autor: R. V. Williams, Anita J. Moon-Grady, Jack Rychik, P. Dean, Rajesh Punn, N. H. Silverman, Whitnee Hogan, James Strainic

Publikováno v: Ultrasound in Obstetrics & Gynecology. 59:682-686

The mitral-aortic intervalvular fibrosa (MAIVF) is an avascular, fibrous structure that provides continuity between the anterior leaflet of the mitral valve and the aortic valve. Pseudoaneurysms of this area are rare and more commonly have been descr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc76677233698b89e5a9069412bfb544
https://doi.org/10.1002/uog.24762

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Stereoselective synthesis of polyfunctionalised hydroxylated cyclopentanes from dihydroxylated 2-cyclopentenone derivatives

Autor: S Vile, S. Khan, Peter B. Hitchcock, Meredith R. V. Williams, M.G Soscia, Vern M. Delisser, V.E Doyle, Lisa M. Frost, Stephen Caddick, G Pairaudeau, S Cheung, Z.C Etheridge

Publikováno v: Tetrahedron. 57:6295-6303

Dihydroxylated cyclopentenones can be readily synthesised via a base mediated isomerisation reaction. These species and their derivatives can be used to provide a wide range of synthetically useful intermediates by participation in a variety of stere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfeecdfed392a08c83a795af313d0a38
https://doi.org/10.1016/s0040-4020(01)00590-7

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An improved synthesis of bis(1,3-di-N-tert-butylimidazol-2-ylidene)palladium(0) and its use in C–C and C–N coupling reactions

Autor: F. Geoffrey N. Cloke, Lisa R. Titcomb, Meredith R. V. Williams, Darren Mckerrecher, Stephen Caddick, Guy K. B. Clentsmith, Peter B. Hitchcock

Publikováno v: Journal of Organometallic Chemistry. :635-639

A new, improved synthesis of [Pd{CN(tBu)(CH)2N(tBu)}2] (1) and its use as a catalyst in coupling reactions, including aminations, is presented. An interesting side product formed in the synthesis of 1, [Pd(?3-C4H7){(CN(tBu)(CH) 2N(tBu)}Cl] (2), is al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9a14f7722d5ed89d399e7a159cef4ea
https://doi.org/10.1016/s0022-328x(00)00724-5

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Convenient synthesis of protected primary amines from nitriles

Autor: Stephen Caddick, Meredith R. V. Williams, Duncan B. Judd, Alexandra K. de K. Haynes

Publikováno v: Tetrahedron Letters. 41:3513-3516

Investigations into the use of nickel chloride and sodium borohydride for the reduction of nitriles showed the secondary amine dimers to be the major products under normal conditions. The addition of a suitable trapping agent, such as di-tert-butyl d

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https://doi.org/10.1016/s0040-4039(00)00410-x

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Factors Influencing the Delivery of information technology in the Secondary Curriculum: a case study

Autor: R. V. Williams, Dennis Moss

Publikováno v: Journal of Information Technology for Teacher Education. 2:77-85

This is a report of a single school case study in the United Kingdom in which the entire staff contributed to the results. The study centres on a survey of staff attitudes towards information technology (IT). The study finds that the majority of staf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f9f61c9f0d7270d9bfdf8bda4478e00
https://doi.org/10.1080/0962029930020106

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[Untitled]

Autor: N. Subramanian, S. Pitchumani, R. V. Williams

Publikováno v: Journal of Materials Science Letters. 20:1983-1985

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::515ebeec67b55d5baef297e8b7d0d111
https://doi.org/10.1023/a:1013103306597

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ChemInform Abstract: 1,4-Bis(arylsulfonyl)-1,2,3,4-tetrahydropyridines in Synthesis. Highly Regio- and Stereoselective SN1′ and Alkylation Reactions

Autor: Donald Craig, Raymond McCague, Gerard A. Potter, Meredith R. V. Williams

Publikováno v: ChemInform. 29

Reaction of lithiated β-sulfonyl acetals with amino acid-derived N-tosylaziridines followed by acid-catalysed cyclisation gives enantiomerically pure 2-alkyl 1,4-bis(arylsulfonyl)-1,2,3,4-tetrahydropyridines 3 in good yields. These heterocyclic subs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da7fe04ff37321616c9a52587df49c68
https://doi.org/10.1002/chin.199818156

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