25 Result(s)

Article

Reviews

Alex C. Michalos, M. E. Williams, Andrew McLaughlin… in Theory and Decision (1972)

Article

The production of callus capable of plant regeneration from immature embryos of numerous Zea mays genotypes

In the summer of 1983, immature embryos from 101 selfed inbred lines and germplasm stocks of Zea mays L. were examined for their ability to produce callus cultures capable of plant regeneration (regenerable cultu...

D. R. Duncan, M. E. Williams, B. E. Zehr, J. M. Widholm in Planta (1985)

Article

Continuous Production of a Novel Lysozyme via Secretion from the Yeast, Pichia pastoris

We have cloned a cDNA for bovine lysozyme c2, a novel lysozyme characteristic of the cow stomach and expressed its protein product by secretion using its native signal sequence in the methylotrophic yeast, Pichia...

M. E. Digan, S. V. Lair, R. A. Brierley, R. S. Siegel, M. E. Williams… in Bio/Technology (1989)

Article

Somaclonal variation in a maize inbred line is not associated with changes in the number or location of Ac-homologous sequences

Somaclonal variation (tissue culture-induced mutations) may result, in some instances, from the activation of transposable elements. This study was conducted to determine whether somaclonal variants in the Zea ma...

M. E. Williams, A. G. Hepburn, J. M. Widholm in Theoretical and Applied Genetics (1991)

Article

Thermophysical properties of elastomers

The following account describes investigations of dimensional and stiffness characteristics of representative polyacrylic and silicone rubbers over the approximate temperature range 20 °C–175 °C. The results h...

M. E. Williams, M. I. Darby, G. H. Wostenholm, B. Yates… in Journal of Materials Science (1993)

Article

Evolution of the two-phase microstructure L1₂ + DO₂₂ in near-eutectoid Ni₃(Al,V) alloy

Transmission electron microscopy and powder x-ray diffraction methods have been used to investigate the evolution of two-phase (L1₂ + DO₂₂) microstructures from the quenched fcc phase of the Ni-5Al-20V (at. %) al...

L. A. Bendersky, F. S. Biancaniello, M. E. Williams in Journal of Materials Research (1994)

Article

Assignment of human genes for β2 and β4 subunits of voltage-dependent Ca²⁺ channels to chromosomes 10p12 and 2q22-q23

We have used human β2 and β4 cDNA probes to map the genes encoding two isoforms of the regulatory β subunit of voltage-activated Ca²⁺ channels, viz. CACNB2 (β2) and CACNB4 (β4), to human chromosomes 10p12 and 2q...

S. Taviaux, M. E. Williams, M. M. Harpold, J. Nargeot, P. Lory in Human Genetics (1997)

Article

Can synchronous spawning be predicted from environmental parameters? A case study of the lugworm Arenicola marina

The annual epidemic spawning period of a Scottish population of Arenicola marina (L.) has been recorded over a period of 13 yr. This population spawns between mid-October and mid-November in a discrete spawning ...

G. J. Watson, M. E. Williams, M. G. Bentley in Marine Biology (2000)

Article

Alpha case thickness modeling in investment castings

The alpha case thickness at the surface of a Ti-6Al-4V (wt pct) step wedge investment casting has been measured and successfully predicted. The prediction uses temperature-time results obtained from a heat flo...

W. J. Boettinger, M. E. Williams… in Metallurgical and Materials Transactions B (2000)

Article

Moving the pulsed heating technique beyond monolithic specimens: Experiments with coated wires

Pulsed heating experiments that measure high-temperature thermophysical properties using pyrometric measurement of the temperature–time history of metal specimens rapidly heated by passage of electric current ...

D. Josell, D. Basak, J. L. McClure, U. R. Kattner… in Journal of Materials Research (2001)

Article

Electron backscattered diffraction and energy dispersive X-ray spectroscopy study of the phase NiSn₄

Electron backscattered diffraction (EBSD) and energy dispersive X-ray spectroscopy (EDS) have been performed on a plate-shaped phase formed through the reaction of Sn and Ni. The phase is formed during extende...

W. J. Boettinger, M. D. Vaudin, M. E. Williams… in Journal of Electronic Materials (2003)

Article

Observed correlation of Sn oxide film to Sn whisker growth in Sn-Cu electrodeposit for Pb-free solders

Localized cracking of surface oxide has been proposed as a necessary step in the nucleation of Sn whiskers in Sn electrodeposited films. To evaluate the effects of the oxide film on Sn whisker growth, a bright...

K. -W. Moon, C. E. Johnson, M. E. Williams, O. Kongstein… in Journal of Electronic Materials (2005)

Article

Hillock and Whisker Growth on Sn and SnCu Electrodeposits on a Substrate Not Forming Interfacial Intermetallic Compounds

Intermetallic compound (IMC) formation at the interface between the tin (Sn) plating and the copper (Cu) substrate of electronic components has been thought to produce compressive stress in Sn electrodeposits ...

M.E. Williams, K.-W. Moon, W.J. Boettinger, D. Josell… in Journal of Electronic Materials (2007)

Article

Equi-Axed Grain Formation in Electrodeposited Sn-Bi

Sn is widely used as a coating in the electronics industry because it provides excellent solderability, ductility, electrical conductivity, and corrosion resistance. However, Sn whiskers have been observed to ...

E. Sandnes, M.E. Williams, M.D. Vaudin, G.R. Stafford in Journal of Electronic Materials (2008)

Article

Effect of current density and electrolyte concentration on hillock growth from pure bright Sn electrodeposits

The effect of current density and Sn methane sulfonate concentration on hillock density, columnar grain size, crystallographic texture, and residual stress of bright Sn electrodeposits is measured. Correlation...

K.-W. Moon, S.-K. Kim, M. E. Williams… in Journal of Applied Electrochemistry (2010)