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Showing 1 to 12 of 251 entries
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Step-wedge sensitometry.

Radiology

Hale J, Bloch P.
PMID: 674670
Radiology. 1978 Sep;128(3):820-1. doi: 10.1148/128.3.820.

An aluminum step-wedge filter placed far from the film cassette provides the constant variation of subject contrast required for quantitative sensitometry while virtually eliminating scatter radiations. Attenuation curves made with this configuration are almost exponentially linear.

A novel method for the transport and long-term storage of cultures and samples in an anaerobic atmosphere.

Letters in applied microbiology

Cragg BA, Bale SJ, Parkes RJ.
PMID: 29389029
Lett Appl Microbiol. 1992 Oct;15(4):125-128. doi: 10.1111/j.1472-765X.1992.tb00743.x.

Nylon-aluminium-polyethylene laminated, sealable bags provided a more economical and flexible method of transportation, incubation and storage than anaerobic jars. The bags were used with a special heat sealer and 'Anaerocult-A' sachets to remove oxygen. The environment inside the bags...

Total Synthesis of the Antitumor Macrolides, (+)-Brefeldin A and 4-Epi-Brefeldin A from d-Glucose: Use of the Padwa Anionic Allenylsulfone [3 + 2]-Cycloadditive Elimination To Construct Trans-Configured Chiral Cyclopentane Systems.

Organic letters

Xiong Z, Hale KJ.
PMID: 27540630
Org Lett. 2016 Sep 02;18(17):4254-7. doi: 10.1021/acs.orglett.6b02002. Epub 2016 Aug 19.

A new synthesis of (+)-brefeldin A is reported via Padwa allenylsulfone [3 + 2]-cycloadditive elimination. Cycloadduct 13 was initially elaborated into iodide 27, which, following treatment with Zn, gave aldehyde 28 whose C(9) stereocenter was epimerized. Further elaboration into...

Generation and detection of quantum turbulence in superfluid 3He-B.

Physical review letters

Fisher SN, Hale AJ, Guénault AM, Pickett GR.
PMID: 11177802
Phys Rev Lett. 2001 Jan 08;86(2):244-7. doi: 10.1103/PhysRevLett.86.244.

We describe the first direct observations of turbulence in superfluid 3He-B. The turbulence is generated by a vibrating-wire resonator driven at velocities exceeding the pair-breaking critical velocity. It is detected by the resulting decrease in the thermal damping on...

c-erbB-3 proto-oncogene expression in uterine cervical carcinoma.

International journal of gynecological cancer : official journal of the International Gynecological Cancer Society

Hunt CR, Hale RJ, Armstrong C, Rajkumar T, Gullick WJ, Buckley CH.
PMID: 11578490
Int J Gynecol Cancer. 1995 Jul;5(4):282-285. doi: 10.1046/j.1525-1438.1995.05040282.x.

Over-expression of epidermal growth factor receptor (EGFR) and c-erbB-2, in uterine cervical carcinomas, is associated with a worsened prognosis. A third member of this proto-oncogene family, c-erbB-3, has now been identified and its over-expression has been described in a...

Mate choice and mate competition influence male body size in Japanese medaka.

Animal behaviour

Howard RD, Martens RS, Innis SA, Drnevich JM, Hale J.
PMID: 9632501
Anim Behav. 1998 May;55(5):1151-63. doi: 10.1006/anbe.1997.0682.

A sexual size dimorphism usually occurs when size-dependent reproductive advantages exist in only one sex. Studies on Japanese medaka, Oryzias latipes, have demonstrated reproductive size advantages in females but not in males, even though males and females are similar...

Grasp force control in older adults.

Journal of motor behavior

Cole KJ.
PMID: 14766507
J Mot Behav. 1991 Dec;23(4):251-8. doi: 10.1080/00222895.1991.9942036.

Diminished tactile sensibility and impaired hand dexterity have been reported for elderly individuals. Reports that younger adults with severely impaired tactile sensibility use excessive grasp force during routine grasp and manipulation tasks raise the possibility that elderly persons likewise...

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...

Low-field 3-DFT MRI: conceptual, analytical, and experimental aspects.

IEEE transactions on medical imaging

Kramer DM, Kaufman L, Rothschild P, Hale J, Wummer J, Hake KK.
PMID: 18222840
IEEE Trans Med Imaging. 1991;10(3):382-6. doi: 10.1109/42.97588.

Three-dimensional Fourier transform (3-DFT) magnetic resonance imaging (MRI) offers advantages in terms of signal-to-noise (S/N) per unit of time for the case where a large number of slices is desired. This advantage is enhanced when the relaxation time, T(1...

Chemically resolved scanning tunneling microscopy imaging of Al on p-type Al0.1Ga0.9As(001)-c(2x8)(2x4).

The Journal of chemical physics

Hale MJ, Winn DL, Grassman TJ, Kummel AC, Droopad R.
PMID: 15836404
J Chem Phys. 2005 Mar 22;122(12):124702. doi: 10.1063/1.1846051.

The ability to chemically differentiate individual subsurface Al and Ga atoms, when imaging the Al0.1Ga0.9As(001)-c(2x8)(2x4) surface with scanning tunneling microscopy (STM), has been observed for the first time. In filled-state STM images first layer As atoms bonded to second...

The stability of precision grip force in older adults.

Journal of motor behavior

Cole KJ, Beck CL.
PMID: 15753069
J Mot Behav. 1994 Jun;26(2):171-7. doi: 10.1080/00222895.1994.9941671.

The exceedingly large grip forces that many older adults employ when lifting objects with a precision pinch grip (Cole, 1991) may compensate for a reduced capability to produce a stable isometric force. That is, their grip force may fluctuate...

The relationship between genetic and cytogenetic maps of pea. II. Physical maps of linkage mapping populations.

Genome

Hall KJ, Parker JS, Ellis TH, Turner L, Knox MR, Hofer JM, Lu J, Ferrandiz C, Hunter PJ, Taylor JD, Baird K.
PMID: 18464863
Genome. 1997 Oct;40(5):755-69. doi: 10.1139/g97-798.

A cytogenetic analysis of inbred lines that have been used to generate genetic maps of pea is presented. Mitotic karyotyping of the inbred lines and meiotic studies of their F1 hybrids have been used to test the prediction that...

Showing 1 to 12 of 251 entries