Photosynthesis converts solar energy into chemical energy. It provides food and oxygen; and, in the future, it could directly provide bioenergy or renewable energy sources, such as bio-alcohol or hydrogen. To exploit such a highly efficient capture of energy requires an understanding of the fundamental physics. The process is initiated by photon absorption, followed by highly efficient and extr...

Latest results of testing the compact dual bore quadrupole and sextupole represented. Dual bore quadrupole tested in cryostat up to ~150 A feeding current generating ~1 kG/cm in each aperture. Sextupole was tested in Dewar and able to generate ~0.7 kG/cm of integrated field. Transverse size of the magnets cold masses is about 180 mm. Dual bore water cooled room temperature apertures are 54 mm i...

The polarizability and second hyperpolarizability of fulvene, dimethylene-cyclobutene, trimethylene-cyclopropane, bicyclopentadiene-propane, bicyclopentadiene-propene, Dewar benzene, benzvalene and several of their anions are computed, employing a CNDO coupled Hartree-Fock procedure. The interaction of the lone pair on the anionic center with double and single bonds, the HOMO-LUMO gap, and subs...

We will present the development of a remote Precision Photonic Readout for Focal Plane Array Detectors. Its underlying principles, design and tests as well as limitations will be discussed. The design, in essence, constitutes a remote, via fiber optics, analog-to-digital converter, where the low level focal plane signals are encoded as differential optical phase shifts. These phase shifts are t...

Five-Year Efficacy and Safety Analysis of the Adenoma Prevention with Celecoxib Trial. Monica M. Bertagnolli, Craig J. Eagle, Ann G. Zauber, Mark Redston, Aurora Breazna, KyungMann Kim, Jie Tang, Rebecca B. Rosenstein, Asad Umar, Donya Bagheri, Neal T. Collins, John Burn, Daniel C. Chung, Thomas Dewar, T. Raymond Foley, Neville Hoffman, Finlay Macrae, Ronald E. Pruitt, John R. Saltzman, Bruce S...

• GEM10P4/CFG-PV4/DWR-30 Coaxial Detector System (Includes detector, cryostat, dewar, preamplifier, and 12-ft. cable pack); typical specifications: 10% relative efficiency, 1.75 keV resolution at 1.332 MeV, 41:1 peak-to-Compton ratio. • 659 0–5 keV Detector Bias Supply • 672 Spectroscopy Amplifier • 480 Pulser • C-24-12 Cables (2 ea.) • C-24-1 Cable • C-29 BNC Tee Connector • 4001A/4002D NIM Bi...

The measurement of radioactivity deposited in the lung is often performed with an array of germanium detectors placed over the chest of the individual. The detector array size can be from four to eight detectors depending on the size of the germanium detector and Dewar assembly. Typically, large area diameter germanium detectors (70 mm diameter) consist of four detectors, and the larger arrays ...