65 Result(s)

Article

Neuromuscular transmission inElectrophorus electricus (L.)

Le système neuromusculaire dansElectrophorus electricus est étudié avec des électrodes intracellulaires. La transmission neuromusculaire est supprimée avec D-tubocurarine (5 · 10⁻⁷ p/v) ou avec un excès des ions ...

W. C. de Mello, Y. C. Chang in Experientia (1966)

Article

Phylogenetic relationships between the chlorophyll a/b binding protein (CAB) multigene family: An intra- and interspecies study

The genome ofGlycine max (L.) Merr. cv. “Dare” contains a chlorophyll a/b binding (Cab) protein gene family consisting of 10 genes. The primary structures of two linkedCab genes (Cab 4 andCab 5) were determined. ...

D. S. Demmin, E. J. Stockinger, Y. C. Chang… in Journal of Molecular Evolution (1989)

Article

The effect of iohexol on brainstem auditory evoked potentials

A prospective study was made to evaluate the effect of intrathecal injection of iohexol on brainstem auditory evoked potentials (BAEP) following myeloradiculography, in order to assess its neurotoxicity. Thirt...

P. -K. Yip, Y. C. Chang, H. M. Liu in Neuroradiology (1991)

Article

Spatial and temporal expression of Cab mRNAs in cotyledons of the develo** soybean seedling

Changes in the temporal and spatial distribution of the mRNAs for the chlorophyll-a/b-binding-protein gene (Cab) in cotyledons from develo** soybean (Glycine max (L.) Merr.) seedlings were studied. Cab mRNAs co...

Y. C. Chang, L. L. Walling in Planta (1992)

Article

Theory of Electronic, Optical and Transport Properties in Silicon Quantum Wires

G. D. Sanders, C. J. Stanton, Y. C. Chang in MRS Online Proceedings Library (1992)

Article

Composition and stability of Ω phase in an Al-Cu-Mg-Ag Alloy

Transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) were employed to determine the stability and composition of the Ω phase in an Al-Cu-Mg-Ag alloy. It is shown that the Ω. ph...

Y. C. Chang, J. M. Howe in Metallurgical Transactions A (1993)

Article

Analysis of Interface Dynamics in Solid-State Phase Transformations by In Situ Hot-Stage High-Resolution Transmission Electron Microscopy

In situ hot-stage high-resolution transmission electron microscopy (HRTEM) provides unique capabilities for quantifying the dynamics of interfaces at the atomic level. Such information is critical for understandi...

James M. Howe, W. E. Benson, A. Garg, Y.-C. Chang in MRS Online Proceedings Library (1994)

Article

Effects of concanavalin A on desensitization kinetics of GABA responses inAchatina fulica neurons

The effects of the lectin concanavalin A (Con A), on the kinetics of desensitization of the responses of voltage clampedAchatina fulica LP5 neuron to microperfused acetylcholine (ACh) and GABA were compared. Both...

V. L. Arvanov, H. C. Chou, Y. H. Chen, R. C. Chen… in Cell Biology and Toxicology (1995)

Article

Dam** characteristics of Ti₅₀Ni_49.5Fe_0.5 and Ti₅₀Ni₄₀Cu₁₀ ternary shape memory alloys

The dam** characteristics of Ti₅₀Ni_49.5Fe_0.5 and Ti₅₀Ni₄₀Cu₁₀ ternary shape memory alloys (SMAs) have been systematically studied by resonant-bar testing and internal friction (IF) measurement. The dam** capa...

U. C. Lin, S. K. Wu, Y. C. Chang in Metallurgical and Materials Transactions A (1995)

Article

Growth and Characterization of Interfaces in P-Type InGaAs/InP Quantum-Well Infrared Photodetectors with Ultra-Thin Quantum Wells

P-type InGaAs/InP quantum-well infrared photodetectors operated at 4.55 μm require the growth of ultra-thin (10 Å) quantum wells. We report a study of interfaces in QWIPs grown by gas-source molecular beam epi...

D. K. Sengupta, S. Kim, T. Horton, H. C. Kuo, S. Thomas… in MRS Online Proceedings Library (1996)

Article

Electrochemical behaviors of li electrode in organic electrolytes

Characterizations of the morphology of lithium deposited in organic electrolytes were carried out using Ni substrates pretreated with H₂ and CO₂ gases prior to electrodeposition. The electrolytes used were 1 M Li...

S. I. Jo, K. J. Kwon, Y. C. Chang, H. J. Sohn, T. Kang in Metals and Materials (1997)

Article

Lead Iodide X-Ray and Gamma-Ray Spectrometers for Room and High Temperature Operation

In this study we report on the results of the investigation of lead iodide material properties. The effectiveness of a zone refining purification method on the material purity is determined by ICP-MS and ICP-O...

H. Hermon, R. B. James, J. Lund, E. Cross, A. Antolak… in MRS Online Proceedings Library (1997)

Article

Growth and characterization of n-type InP/InGaAs quantum well infrared photodetectors for response at 8.93 µm

We present experimental results on the growth and characterization of n-type InGaAs/InP quantum-well intersubband photodetectors for use at 8.93 µm. High-quality InGaAs/InP multiple quantum wells were grown by...

D. K. Sengupta, S. L Jackson, A. P. Curtis, W. Fang… in Journal of Electronic Materials (1997)

Article

Photoluminescence Excitation Study of Lo-Phonon Assisted Excitonic Transitions in GaN

We report the results of a photoluminescence excitation (PLE) study on excitonic transitions in GaN. PLE measurements were carried out as a function of temperature to investigate exciton formation, thermalizat...

S.J. Hwang, Y.H. Cho, J.J. Song, W. Shan, Y.C. Chang in MRS Online Proceedings Library (1997)

Article

Monolithically Integrated Dual-Band Quantum Well Infrared Photodetector

A monolithic quantum well infrared photodetector (QWIP) structure has been presented that is suitable for dual bands in the two atmospheric transmission windows of 3 - 5.3 fum and 7.5 - 14fum, respectively. Th...

D. K. Sengupta, S. D. Gunapala, S. V. Bandara, F. Pool… in MRS Online Proceedings Library (1997)

Article

Growth and characterization of InGaAs/InP p-quantum-well infrared photodetectors with extremely thin quantum wells

High-quality InGaAs/InP quantum wells with ultra-narrow well widths (∼10Å) and peak response at 4.55 µm were grown by gas source molecular beam epitaxy. These structures were characterized by cross-sectional t...

D. K. Sengupta, S. L. Jackson, A. P. Curtis, W. Fang… in Journal of Electronic Materials (1997)

Article

Growth and characterization of n-type GaAs/AlGaAs quantum well infrared photodetector on GaAs-on-Si substrate

We present in this article device characteristics of molecular beam epitaxy grown GaAs/AlGaAs quantum well infrared photodetectors (QWIP) on a semi-insulating GaAs substrate and on a GaAs-on-Si substrate grown...

D. K. Sengupta, M. B. Weisman, M. Feng, S. L. Chuang… in Journal of Electronic Materials (1998)

Article

Solution Bounds for the Discrete Riccati Equation and Its Applications

In this paper, we address the estimation problem for the solution of the discrete algebraic matrix Riccati equation. Both upper and lower bounds are measured. Compared to the majority of the approaches propose...

C. H. Lee, Y. C. Chang in Journal of Optimization Theory and Applications (1998)

Article

Bandgap Shifting of an Ultra-Thin InGaAs/InP Quantum Well Infrared Photodetector via Rapid Thermal Annealing

We demonstrate that SiO₂ cap rapid thermal annealing in ultra-thin p-type InGaAs/InP quantum wells can be used to produce large blue shifts of the band edge. A substantial bandgap blue shift, as much as 292.5 meV...

D. K. Sengupta, S. Kim, H. C. Kuo, A. P. Curtis… in MRS Online Proceedings Library (1998)