2 Abstract: The objective of the following study was to determine if a post-chill whole carcass Cecure (Safe Foods ® Corporation, N. Little Rock, AR) treatment (0.3% @ 0.5 gallon/carcass) would extend the shelf-life of various further processed broiler products which were produced from Cecure -treated whole carcasses. Cecure is an FDA and ® ® ®
The meeting was attended by 5 members of the WG (E. Bowell, G. Consolmagno, R. Courtain, R. Lopez, R. Schulz) one Task Group member (J. Watanabe), and several guests from the CSBN and CBAT. It was decided at the beginning of the meeting that the attending members of the WGPSN would discuss matters, provide their opinion or vote, and then ask the other 8 formal members to do the same via email. As a consequence the following discussed items have been agreed by majority vote of the WG members.
We have obtained high spatial resolution imaging observations of the HR 4796A circumstellar debris dust ring using the broad optical response of the Hubble Space Telescope Imaging Spectrograph (STIS) in coronagraphic mode. We use our visual wavelength observations to improve upon the earlier measured geometrical parameters of the ring-like disk. Two significant flux density asymmetries are noted: (1) preferential forward scattering by the disk grains and (2) an azimuthal surface brightness anisotropy about the morphological minor axis of the disk with corresponding differential ansal brightness. We find the debris ring offset from the location of the star by ∼1.4 AU, a shift insufficient to explain the differing brightnesses of the northeast and southwest ansae simply by the 1/r2 dimmunition of starlight. The STIS data also better quantify the radial confinement of the starlight-scattering circumstellar debris, to a characteristic region less than 14 AU in photometric half-width, with a significantly steeper inner truncation than outward falloff in radial surface brightness. The inferred spatial distribution of the disk grains is consistent with the possibility of one or more unseen co-orbital planetary-mass perturbers, and the colors of the disk grains are consistent with a collisionally evolved population of debris, possibly including ices reddened by radiation exposure to the central star.
SummaryThe tibial wedge osteotomy (TWO), a procedure that reduces the tibial plateau slope, has become an established surgical technique for the treatment of cranial cruciate ligament injuries in dogs, yet variation from the desired postoperative tibial plateau slope of 6° has been noted. The objectives of this study were to investigate the geometric implications of this procedure and to identify factors that affect the postoperative angles. The records of 35 consecutive cases that had a TWO performed were reviewed and comparisons were made between the alignment of the cortices and level of the osteotomy using duplicated tracings of a preoperative radiograph. The existing method for calculating the size of wedge to be removed was found to result in a postoperative slope greater than the expected 6°. Our results indicate that the desired postoperative angle is more likely to be achieved if the cranial cortices are aligned and the osteotomy is performed proximally.
T. C. Owen, K. Aksnes, R. Beebe, J. Blue, A. Brahic, G. A. Burba, B. A. Smith, V. G. Tejfel Institute for Astronomy, 2680 Woodlawn Dr, Honolulu, HI 96822-1897, USA owen@ifa.hawaii.edu, Institute of Theoretical Astrophysics, P.B. 1029 Blindern, 0315 Oslo, Norway kaare.aksnes@astro.uio.no, New Mexico State University, P.O. Box 4500, Las Cruces, NM 88003, USA rbeebe@nmsu.edu, US Geological Survey, 2255 N Gemini Dr, Flagstaff, AZ 86001, USA jblue@usgs.gov, Centre d'Etudes de Saclay, Universite Paris VII, Batiment 709, L'Orme des Merisiers, 91191 Gif-sur-Yvette, France brahic@discovery.saclay.cea.fr, Vernadsky Institute, 19 Kosygin St, Moscow 119991, Russia gburba@gmail.com, 18 Pajarito de Azul, Santa Fe, NM 87506-0015, USA brad.smith@starband.net, Fessenkov Astrophysical Institute, 050020 Alma-Ata, Kazakhstan tejf@hotmail.com.
SUMMARY. Patients with inoperable esophageal malignancy often undergo palliative self-expanding metal stent insertion. This analysis of cases shows that although such stents provide good palliation of dysphagia, complications frequently occur. Complications reported were pain after insertion, bleeding, food bolus impaction, stent migration and increased gastroesophageal reflux. Furthermore, in patients with esophageal adenocarcinoma, survival was less if the distal end of the stent entered the stomach, rather than lying entirely within the esophagus. Reduced survival, in this group with gastroesophageal junction tumors, may be a result of increased gastroesophageal reflux leading to pulmonary aspiration. Stents incorporating an antireflux valve have been shown to reduce symptomatic gastroesophageal reflux. It may be that such valves offer a survival advantage where stent insertion ablates the function of the lower esophageal sphincter. Further studies are needed to assess the role of antireflux stents on survival in patients with gastroesophageal junction tumors.
The Levitated Dipole Experiment (LDX) is an innovative approach to explore the magnetic confinement of a fusion plasma offering the possibility of an improved fusion power source. In this concept, a magnetic dipole (a superconducting solenoid) is magnetically levitated for several hours at the center of a 5 m diameter, 3 m tall vacuum chamber. The Floating coil (F-coil) is designed for a maximum field of 5.3 T. A Nb3Sn conductor was selected to operate the coil when it warms from an initial temperature of below 5 K up to about 10 K at the end of the experimental run. The Levitation coil (L-coil) made from high temperature superconductor electromagnetically supports the F-coil in the center of the plasma volume. There are no electric or cryogenic feeders serving the coil through the plasma because the F-coil must operate in a levitated position. The coil is cooled by retractable feeds and inductively charged/discharged in a lower charging station (CS). The NbTi charging coil (C-coil) surrounds the CS and induces the current in the F-coil. The L-coil and C-coil have each been independently tested. This paper describes the first integrated test of the F-coil and C-coil. (c) 2005 Elsevier B.V. All rights reserved.
Since the IAU General Assembly in Sydney in July 2003, the WGPSN has conducted its business through numerous e-mail exchanges between the members. A nomenclature workshop was held at Hardingasete, western Norway on September 1–3, 2005. That meeting was attended by eight members from the WG and two from the Task Groups (TG) for the small bodies and for the outer solar system. Input to the meeting had also been received by e-mail from other members.
The Levitated Dipole Experiment (LDX) was developed to study plasma confinement in a dipole magnetic field. Plasma is confined in the magnetic field of a 680-kg Nb3Sn Floating Coil (F-coil) that is electromagnetically supported at the center of a 5-m diameter by 3-m tall vacuum chamber. The Levitation Coil (L-coil) is a 2800-turn, double pancake winding that supports the weight of the F-coil and controls its vertical position within the vacuum chamber. The use of high-temperature superconductor (HTS) Bi-2223 for the L-coil minimizes the electrical and cooling power needed for levitation. The L-coil winding pack and support plate are suspended within the L-coil cryostat and cooled by conduction to a single-stage cryocooler rated for 25-W heat load at approximately 20 K. The coil current leads consist of conduction-cooled copper running from room temperature to 80 K and a pair of commercially-available, 150-A HTS leads. An automatically filled liquid-nitrogen reservoir provides cooling for the coil's radiation shield and for the leads' 80-K heat stations. This paper discusses the L-coil system design and its observed cryogenic performance.
Results from the best reported PMOS transistor at a 37 nm gate length (Lg) built on a process with a recessed SiGe epitaxial layer are discussed. The process details include successful integration of SiGe at the drain extension (DE) location. A highly compressive SiGe layer, in close proximity to the channel, results in large hole mobility improvements. HRTEM based lattice parameter extractions confirm the compressive strain in the channel. In situ doped B in SiGe can be activated to a higher degree than implanted B in bulk Si resulting in further improvements from the lower DE resistance. Both changes combine to give an unprecedented 35% PMOS performance improvement. Process and device simulations that predict the observed parametric behavior quantitatively isolate the improvements to be /spl sim/ 28% from stress and 7% from DE resistance improvement.
The Levitated Dipole Experiment (LDX) was designed by Columbia University and the Massachusetts Institute of Technology to investigate plasma confinement within a dipole magnetic field. The experiment consists of a 5 m diameter by 3 m tall vacuum chamber and three superconductor coils: a Nb/sub 3/Sn Floating Coil that provides the dipole field for plasma confinement; a NbTi Charging Coil that inductively charges and discharges the Floating Coil current; and a high temperature superconductor (Bi-2223) Levitation Coil that electromagnetically supports the weight of the 620 kg Floating Coil and controls its vertical position within the vacuum chamber. LDX is the first US plasma confinement experiment to use a high temperature superconductor coil. The use of high temperature superconductor minimizes the electrical and cooling power needed for levitation, allowing additional power for plasma heating. The levitation coil is a 2800 turn, 1.3 m outer diameter, double pancake winding. It is designed to operate at up to 150 A current at 20 K and is cooled by a combination of one stage cryocooler and liquid nitrogen cooled radiation shield. This paper provides details for the design, fabrication and test of the coil.
The Advanced Hydrotest Facility (AHF) at Los Alamos will provide proton radiography of large-scale, dynamic events. The large bore (Case II) quadrupole focusing magnets are a subsystem in. this facility, consisting of four complete imaging lines with a total of eight imaging plates and 52 quadrupole magnets. Each large bore quadrupole has an inner winding diameter of 660 mm and provides a gradient of 10.4 T/m with a 300 mm field of view. Each magnet is a two-layer saddle, contained by a three cm steel shell. The conductor is a Rutherford cable, soldered into a C-shaped copper channel. The magnets are. cooled by the forced-flow of two-phase helium through coolant pipes. Since the winding was calculated to absorb bursts of 0.35 J/kg irradiation, both NbTi and Nb-3 Sn designs are being considered.
Silicon loss during gate etch from the active region of a traditional complementary metal–oxide–semiconductor transistor is shown to take place through plasma oxidation of the silicon substrate during the overetch step. The plasma oxidation occurs by an ion-enhanced process with an activation energy of only 0.02 eV. This phenomenon is successfully modeled using the traditional Deal–Grove thermal oxidation model, with the inclusion of a depth-dependent reaction rate constant to incorporate the ion-enhancement effect. Plasma oxidation and silicon loss are reduced by using a shorter polysilicon over-etch time, lower source and bias power, lower substrate temperature, and lower O2 flow. A viable polysilicon over-etch process was developed that produced vertical gate profiles while reducing the silicon loss by 32%.
The Muon-to-Electron Conversion Experiment (MECO) seeks to detect muon to electron conversion, providing evidence that the conservation of moon and electron type lepton number can be violated. Observation of this violation would suggest physics beyond the Standard Model. The experiment is to be installed at Brookhaven National Laboratory (BNL), A high energy proton beam produces pions upon hitting, a heavy target inside the 1.5 m diameter by 5 m long Production Solenoid (PS). A fraction of the muons from pion decay are captured in the 0.5 m diameter bore by the 13 m long, S-shaped Transport Solenoid (TS), which contains collimators, providing sign and momentum selection. The muons are stopped in a target inside a 1.9 m bore by 10 m long Detector Solenoid (DS) that houses detectors. to measure the energy of the conversion electrons. Magnetic field is controlled to 5T +/- 5% at the. high-field end of the PS and to 1 T +/- 0.2% in the detector region of the DS. The conceptual design for the magnets is summarized, including conductor, coil, structure and cryogenic design.
We report the initial results from a program of HST/STIS spectroscopy of “hot” low-mass (brown dwarf) companions to nearby young stars identified in our HST/NICMOS coronagraphic imaging survey. We present spectra of the likely 20 and 40 Jupiter mass companions to CD -33° 7795 and HR 7329, respectively, the binary companions to GL 577 (both, possibly, brown dwarfs), and the low-mass star GL 503.2B. We discuss the state of our recent follow-up observations of the putative companion to TWA 6. We add these companions to the very few already known, allowing the first steps to be taken toward answering many fundamental questions regarding the formation and evolution of multiple systems with components near and below the stellar/substellar boundary.