Scientific Commons: L. Chang

High expression of the circadian gene mPer2 diminishes the radiosensitivity f NIH 3T3 cells (2009)

Chang,L., Liu,Y.Y., Zhu,B., Li,Y., Hua,H., Wang,Y.H., ...

Period2 is a core circadian gene, which not only maintains the circadian rhythm of cells but also regulates some organic functions. We investigated the effects of mPeriod2 (mPer2) expression on...

Background: Clinical MRI is generally performed (2008)

T. Ernst, L. Itti, L. Chang

with manually prescribed slice orientations by trained MR technologists. However, manual scan prescription is time consuming and often suboptimal, because the operators do not utilize all available...

Simultaneous Correction for Interscan Patient Motion and Geometric Distortions in Echoplanar Imaging (2008)

T. Ernst, O. Speck, L. Itti, L. Chang

A method is presented for simultaneous correction of linear geometric distortions and interscan patient motion in echoplanar imaging (EPI). The technique does not require the acquisition of...

Comparison of Static and Dynamic MRI Techniques for the Measurement of Regional Cerebral Blood Volume (2008)

O. Speck, L. Chang, L. Itti, E. Itti, T. Ernst

Two different acquisition and processing strategies to determine the regional cerebral blood volume (rCBV) with magnetic resonance imaging (MRI) are compared. The first method is based on the...

1 (2007)

R. Herpers, G. Verghese, L. Chang, K. Darcourt, K. Derpanis, R. F. Enenkel, ...

An active stereo vision system is introduced which is able to detect the face of an arbitrary person in a real world environment. The face is zoomed in and tracked while the person is able to give...

Marijuana use is associated with a reorganized visual-attention network and cerebellar hypoactivation (2006)

Chang, L., Yakupov, R., Cloak, C., Ernst, T.

Attention and memory deficits have been reported in heavy marijuana users, but these effects may be reversible after prolonged abstinence. It remains unclear whether the reversibility of these...

Marijuana use is associated with a reorganized visual-attention network and cerebellar hypoactivation (2006)

Chang, L., Yakupov, R., Cloak, C., Ernst, T.

Attention and memory deficits have been reported in heavy marijuana users, but these effects may be reversible after prolonged abstinence. It remains unclear whether the reversibility of these...

A randomised controlled trial assessing the efficacy and safety of repeated tegaserod therapy in women with irritable bowel syndrome with constipation (2005)

Müller-Lissner, S, Bytzer, P, Corinaldesi, R, Chang, L, Viegas, A, ...

BACKGROUND: It has been proposed that treatments for irritable bowel syndrome with constipation (IBS-C) should provide rapid symptomatic relief, be intermittent, and effective upon repeated use....

Natural HLA class 1 polymorphism controls the pathway of antigen presentation and susceptibility to viral evasion (2004)

Zernich, D., Purcell, A. W., Macdonald, W. A., Kjer-Nielsen, L., Ely, L. K., Laham, N., ...

(c) Rockefeller University Press

Natural HLA class 1 polymorphism controls the pathway of antigen presentation and susceptibility to viral evasion (2004)

Zernich, D., Purcell, A. W., Macdonald, W. A., Kjer-Nielsen, L., Ely, L. K., Laham, N., ...

(c) Rockefeller University Press

Carotid artery intimal medial thickness, brachial artery flow mediated vasodilation and cardiovascular disease risk factors in diabetic and non-diabetic indigenous Australians (2004)

Chang, L., Busfield, F., Haluska, B., Barnett, A., Kesting, J., Short, L., ...

Carotid artery intimal medial thickness, brachial artery flow mediated vasodilation and cardiovascular disease risk factors in diabetic and non-diabetic indigenous Australians (2004)

Chang, L., Busfield, F., Haluska, B., Barnett, A., Kesting, J., Short, L., ...

The exocyst complex is required for targeting of Glut4 to the plasma membrane by insulin (2003)

Inoue, M, Chang, L, Hwang, J, Chiang, SH, Saltiel, AR

Insulin stimulates glucose transport by promoting exocytosis of the glucose transporter Glut4 (refs 1, 2). The dynamic processes involved in the trafficking of Glut4-containing vesicles, and in their...

A naturally selected dimorphism within the HLA-B44 supertype alters class I structure, peptide repertoire, and T cell recognition (2003)

Macdonald, W. A., Purcell, A. W., Mifsud, N. A., Ely, L. K., Williams, D. S., Chang, L., ...

HLA-B*4402 and B*4403 are naturally occurring MHC class I alleles that are both found at a hi,,h frequency in all human populations, and vet they only differ by one residue on the alpha2 helix...

Genetic organization of alpha-bungarotoxins from Bungarus multicinctus (Taiwan banded krait): evidence showing that the production of alpha- bungarotoxin isotoxins is not derived from edited mRNAs (1999)

Chang, L, Lin, S, Huang, H, Hsiao, M

Improvement of resolution by maximum entropy linear image restoration for NiSi2/Si interface (1999)

Chen, Fu-Rong, Kai, J. J., Chang, L., Wang, J. Y., Chen, W. J.

A linear imaging constrained-maximum entropy method has been developed to extend the resolution from a series of defocused high-resolution images and one diffraction pattern. Our method is basically...

Thao Reduplication (1998)

Chang, L.

Endocrine abnormalities in ovulatory women with polycystic ovaries on ultrasound (1997)

Carmina, E, Wong, L, Chang, L, Paulson, RJ, Sauer, MV, Stanczyk, FZ, ...

Neural basis of confabulation (1996)

Benson, D. F., Djenberedjian, A., Miller, B. L., Pachana, N. A., Chang, L., Itti, L., ...

Describes a case of acute alcohol-induced Korsakoff amnesia in a 32-yr-old female. A severe amnestic-confabulatory syndrome characterized the early clinical status. The initial neuropsychological...

PDBTool: A Prototype Object Oriented Toolkit for Protein Structure Verification (1992)

C. Pu, Pu Sheka Ong, J. Ong, L. Chang, A. Chang, E. Alessio, ...

The Protein Data Bank (PDB) is a large and rapidly growing standard repository of complex biological macromolecules. Existing software tools for the PDB, including storage management, are quite...

ELECTRONS AND HOLES IN InAs-Ga (Al) Sb (As) QUANTUM WELLS (1987)

Munekata, H., Smith, T., Fang, F., Esaki, L., Chang, L.

Quantum wells composed of type-II heterojunctions of InAs-Ga(Al)Sb(As) ternary alloys have been prepared by molecular beam epitaxy as an extension of the binary InAs-GaSb. By increasing the alloy...

EXPERIMENTAL INVESTIGATIONS OF THE QUANTUM PHOTOVOLTAIC EFFECT IN InAs-GaSb SEMICONDUCTOR SUPERLATTICES (1987)

Bleuse, J., Voisin, P., Voos, M., Chang, L., Esaki, L.

We report the observation of the quantum photovoltaic effect in InAs-GaSb semiconductor superlattices. The results are consistent with the theoretical predictions, except for the voltage sign which...

OPTICAL TRANSMISSION UNDER MAGNETIC FIELDS IN CdTe/CdMnTe SUPERLATTICES (1987)

Couturier, G., Yoshino, J., Chang, L., Von Molnar, S.

We have measured the optical transmission in CdTe/CdMnTe superlattices at 1.6K and under magnetic field up to 50kOe. The transmission spectra exhibit step-like characteristics, which can be...

RAMAN SCATTERING AND EXCITATION SPECTROSCOPY IN CdTe/CdMnTe SUPERLATTICES (1987)

ViÑa, L., Chang, L., Yoshino, J.

We have observed oscillatory structure in the excitation spectra of CdTe/CdxMN1-xTe superlattices. A comparison of these spectra with conventional Raman spectra shows that the structures correspond...

X-RAY REFLECTIVITY OF InAs/GaAs HETEROSTRUCTURES WITH SURFACE AND INTERFACIAL ROUGHNESS (1987)

Woronick, S., Yang, B., Krol, A., Kao, Y., Munekata, H., Chang, L., ...

The reflection of monochromatic x-rays by heterostructures shows regular oscillations in the reflectivity as a function of the grazing angle. These oscillations contain information about the layer...