Biochemistry, Biophysics, and Structural Biology Commons^™

Method And Apparatus For Controlling Acoustic Signal Bandwidth In An Ultrasonic Diagnostic Imaging System, Jeffrey R. Resnick, Gregory R. Bashford

Biomedical Imaging and Biosignal Analysis Laboratory

An ultrasonic imaging system includes a receive beam former that generates analog receive signals and a scan converter. A receive signal processing path interconnects the receive beamformer and the scan converter, and this processing path includes both an A/D converter characterized by a selectable sampling rate and at least one filter characterized by at least one filter parameter. The filter parameter is selected as a function of the sampling rate to provide enhanced image quality.

Ibpp Research Associates: Space And Extreme Environments, M. Ephimia Morphew - Society For Human Performance In Extreme Environments

International Bulletin of Political Psychology

Per M. Ephimia Morphew. President of the Society for Human Performance in Extreme Environments previously online at http://www.hpee.org, colleagues at the Institute of Biomedical Problems in Russia (IBMP) are engaged in an isolation experiment pertaining to space exploration that is two months underway and preliminary findings are reported [in the article entitled First Two Months of Simulated Isolation Passed.]

IBPP commentary includes a discussion of human factors and political psychology as parameters of space.

Regulation Of Connexin43 By Phosphorylation, Maithili M. Shah

Loma Linda University Electronic Theses, Dissertations & Projects

Gap junctions play a crucial role in embryogenesis, especially of the heart where connexin43 is thought to be important for its formation as well as synchronized contraction. Several reports have shown that connexin43 protein is phosphorylated on serine residues in vitro and in vivo.

Studies performed in our laboratory have demonstrated that cell-to-cell communication in cells expressing connexin43 can be controlled rapidly and reversibly by microinjection of active protein kinases or phosphatases that target serine or threonine residues. Phosphorylation by cAMP-dependent protein kinase (PKA) seems to favor channel opening, whereas the effect of protein kinase C (PKC) on channel gating …

Atherosclerosis And Plaque Rupture: An Update, M N. Afzal, S A. Saeed, B H. Shah

Department of Biological & Biomedical Sciences

No abstract provided.

The Acquisition And Quantitative Analysis Of Digitally Generated Fourier Transforms Resulting From The Physiognomy Of Various Tree And Shrub Species, Alicia Eldridge-Spears

Theses, Dissertations and Capstones

An optical Fourier transform represents the interference of wavefronts produced as light passes through multiple slits. Theoretically, any image containing periodic structure causes diffraction. The cellular arrangement of a plant leaf and the regularity in venation are ideal conditions for diffracting light. As light passes through columns of cells, its path is altered according to the distance and orientation present.

A photograph or slide of a leaf or the leaf itself may be used to produce a diffraction pattern by either optical or digital means. Optically, a laser beam directed through a slide is refracted by a converging lens and …

Archaeal Aminoacyl-Trna Synthesis: Unique Determinants Of A Universal Genetic Code?, Michael Ibba, A. W. Curnow, J. Bono, P. A. Rosa, C. R. Woese, D. Söll

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

No abstract provided.

Lateral Hypothalamic Nmda Receptor Subunits Nr2a And/Or Nr2b Mediate Eating: Immunochemical/Behavioral Evidence, Arshad Khan, Margarita C. Curras, Jennifer Dao, Faizi A. Jamal, Rishi K. Goel, Elizabeth R. Gillard, Stefany D. Wolfsohn, B. Glenn Stanley

Arshad M. Khan, Ph.D.

No abstract provided.