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Hydrogen effects in non-ferrous alloys: discussion.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Patel M, Stopher MA.
PMID: 28607200
Philos Trans A Math Phys Eng Sci. 2017 Jul 28;375(2098). doi: 10.1098/rsta.2017.0030.

This is a transcript of the discussion session on the effects of hydrogen in the non-ferrous alloys of zirconium and titanium, which are anisotropic hydride-forming metals. The four talks focus on the hydrogen embrittlement mechanisms that affect zirconium and...

Crystal structure of [butane-2,3-dione bis-(4-methyl-thio-semicarbazonato)-κ(4) S,N (1),N (1'),S'](pyridine-κN)zinc(II).

Acta crystallographica. Section E, Crystallographic communications

Brown OC, Tocher DA, Blower PJ, Went MJ.
PMID: 26594508
Acta Crystallogr E Crystallogr Commun. 2015 Oct 17;71:1349-51. doi: 10.1107/S2056989015019234. eCollection 2015 Nov 01.

In the structure of the title complex, [Zn(C8H14N6S2)(C5H5N)], the Zn(II) ion has a pseudo-square-pyramidal coordination environment and is displaced by 0.490 Å from the plane of best fit defined by the bis-(thio-semicarbazonate) N2S2 donor atoms. Chains sustained by intermolecular...

Mechanistic studies on the O-directed free-radical hydrostannation of disubstituted acetylenes with Ph3SnH and Et3B and on the iodination of allylically oxygenated alpha-triphenylstannylalkenes.

Organic letters

Dimopoulos P, George J, Tocher DA, Manaviazar S, Hale KJ.
PMID: 16288510
Org Lett. 2005 Nov 24;7(24):5377-80. doi: 10.1021/ol051937d.

[reaction: see text] The free-radical hydrostannation of 1 with Ph(3)SnH and catalytic Et(3)B in PhMe has been mechanistically probed. At high Ph(3)SnH concentrations, the O-directed hydrostannation pathway dominates, and 2 is formed with good selectivity (ca. 11.1:1). Substantially lower...

Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives.

The journal of physical chemistry. B

Karamertzanis PG, Anandamanoharan PR, Fernandes P, Cains PW, Vickers M, Tocher DA, Florence AJ, Price SL.
PMID: 17441754
J Phys Chem B. 2007 May 17;111(19):5326-36. doi: 10.1021/jp068530q. Epub 2007 Apr 19.

The crystal structures, including two new polymorphs, of three diastereomerically related salt pairs formed by (R)-1-phenylethylammonium (1) with (S&R)-2-phenylpropanoate (2), (S&R)-2-phenylbutyrate (3), and (S&R)-mandelate (4) ions were characterized by low-temperature single crystal or powder X-ray diffraction. Thermal, solubility, and...

Why are silyl ethers conformationally different from alkyl ethers? Chair-chair conformational equilibria in silyloxycyclohexanes and their dependence on the substituents on silicon. The wider roles of eclipsing, of 1,3-repulsive steric interactions, and of attractive steric interactions.

Journal of the American Chemical Society

Marzabadi CH, Anderson JE, Gonzalez-Outeirino J, Gaffney PR, White CG, Tocher DA, Todaro LJ.
PMID: 14653751
J Am Chem Soc. 2003 Dec 10;125(49):15163-73. doi: 10.1021/ja035936x.

An NMR study of the diaxial/diequatorial chair equilibrium in a range of silylated derivatives of trans-1,4- and trans-1,2-dihydroxycyclohexane is reported and discussed with a view to explaining unusually large populations of chair conformations with axial substituents, noted previously for...

"Extreme" cosmetic surgery: a retrospective study of morbidity in patients undergoing combined procedures.

Aesthetic surgery journal

Stevens WG, Vath SD, Stoker DA.
PMID: 19336172
Aesthet Surg J. 2004 Jul-Aug;24(4):314-8. doi: 10.1016/j.asj.2004.04.005.

BACKGROUND: It is increasingly common for patients to request that multiple cosmetic procedures be performed during a single operation. The advantages of combined procedures include a single recovery period, reduced surgery costs, and faster patient gratification. Traditional surgical thinking,...

Solid-State Forms of β-Resorcylic Acid: How Exhaustive Should a Polymorph Screen Be?.

Crystal growth & design

Braun DE, Karamertzanis PG, Arlin JB, Florence AJ, Kahlenberg V, Tocher DA, Griesser UJ, Price SL.
PMID: 21218174
Cryst Growth Des. 2011 Jan 05;11(1):210-220. doi: 10.1021/cg101162a. Epub 2010 Nov 30.

An extensive experimental screen, coupled with a computational study, revealed seven new solid-state forms of β-resorcylic acid. The known, stable polymorph II° shows a reversible phase transformation to the new, kinetically stable, probably disordered high temperature form I. The...

Is one-stage breast augmentation with mastopexy safe and effective? A review of 186 primary cases.

Aesthetic surgery journal

Stevens WG, Stoker DA, Freeman ME, Quardt SM, Hirsch EM, Cohen R.
PMID: 19338958
Aesthet Surg J. 2006 Nov-Dec;26(6):674-81. doi: 10.1016/j.asj.2006.10.003.

BACKGROUND: Although some authors have reported that 1-stage breast augmentation with mastopexy does not increase the risks of surgery, recent literature has raised the question of whether better results might be achieved by staging the procedures.OBJECTIVE: The authors evaluated...

Phase behavior and bulk structural properties of a microphase former with anisotropic competing interactions: A density functional theory study.

Physical review. E

Stopper D, Roth R.
PMID: 29347593
Phys Rev E. 2017 Oct;96(4):042607. doi: 10.1103/PhysRevE.96.042607. Epub 2017 Oct 20.

Using classical density functional theory, we investigate systems exhibiting interactions where a short-range anisotropic attractive force competes with a long-range spherically symmetric repulsive force. The former is modelled within Wertheim's first-order perturbation theory for patchy particles, and the repulsive...

Remnants of the disappearing critical point in chain-forming patchy fluids.

The Journal of chemical physics

Stopper D, Hansen-Goos H, Roth R, Evans R.
PMID: 32199408
J Chem Phys. 2020 Mar 21;152(11):111101. doi: 10.1063/1.5141059.

For a standard model of patchy colloidal fluids with patch number M = 2, where chain formation (polymerization) occurs, we show that Wertheim theory predicts critical behavior at vanishing density and temperature. The analysis is based on determining lines...

Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian.

Scientific reports

Smith CPA, Laville T, Fara E, Escarguel G, Olivier N, Vennin E, Goudemand N, Bylund KG, Jenks JF, Stephen DA, Hautmann M, Charbonnier S, Krumenacker LJ, Brayard A.
PMID: 34608207
Sci Rep. 2021 Oct 04;11(1):19657. doi: 10.1038/s41598-021-99056-8.

The mass extinction characterizing the Permian/Triassic boundary (PTB; ~ 252 Ma) corresponds to a major faunal shift between the Palaeozoic and the Modern evolutionary fauna. The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly...

Analysis of the genome of satellite panicum mosaic virus.

Virology

Masuta C, Zuidema D, Hunter BG, Heaton LA, Sopher DS, Jackson AO.
PMID: 18644571
Virology. 1987 Aug;159(2):329-38. doi: 10.1016/0042-6822(87)90471-5.

The relatedness of the genomes of satellite panicum mosaic virus (SPMV) and its helper virus, panicum mosaic virus (PMV), were investigated by nucleic acid hybridization. The results show that the satellite and helper virus RNAs have no appreciable homology...

Showing 1 to 12 of 77 entries