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Advancement of our polymerized crystalline colloidal array chemical sensing technology. They have dramatically advanced their polymerized crystalline colloidal array chemical sensing technology. They fabricated nonselective sensors for determining pH and ionic strength. They also developed selective sensors for glucose and organophosphorus mimics of nerve gas agents. They developed a trace sensor for cations in water which utilized a novel crosslinking sensing motif. In all of these cases they have been able to theoretically model their sensor response by extending hydrogel volume phase transition theory. They also developed transient sampling methods to allow their ion sensing methods to operate at high ionic strengths. They also developed a novel optrode to provide for simple sampling.

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.

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Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.

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Recent tokamak experiments employing off-axis, non-inductive current drive have found that a large central current hole can be produced. The current density is measured to be approximately zero in this region, though in principle there was sufficient current-drive power for the central current density to have gone significantly negative. Recent papers have used a large aspect-ratio expansion to show that normal MHD equilibria (with axisymmetric nested flux surfaces, non-singular fields, and monotonic peaked pressure profiles) can not exist with negative central current. We extend that proof here to arbitrary aspect ratio, using a variant of the virial theorem to derive a relatively simple integral constraint on the equilibrium. However, this constraint does not, by itself, exclude equilibria with non-nested flux surfaces, or equilibria with singular fields and/or hollow pressure profiles that may be spontaneously generated.

Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.

Data were collected with the AGS internal polarimeter at G{gamma} = 7.5 during the recent FY02 polarized proton run. The addition of new forward scintillation counters permitted an absolute calibration of the polarimeter for both nylon and carbon targets. The results are summarized, and the polarization measured at G{gamma} = 7.5 is compared to that at 200 MeV.

The measurement of diffusivity at low temperature in the Ni-CrMo alloy system, relative to the melt point, is accomplished through the use of a composition-modulated structure. The composition-modulated structure consists of numerous pairs of alternating Ni and Cr-Mo layers that are each just a few nanometers thick. A direct assessment of alloy stability is made possible through measurement of the atomic diffusion between these layers that occurs during anneal treatments. X ray diffraction under the Bragg condition in the {theta}/2{theta} mode is the method used to quantify the changes that occur in the short-range order, i.e. the artificial composition fluctuation. The relative intensities of satellite reflections about the Bragg peaks are monitored as a function of the time at temperature. The decay rate of the artificial composition fluctuation of Ni with Cr-Mo is analyzed using the microscopic theory of diffusion to quantify a macroscopic diffusion coefficient D as 1.52 x 10{sup -19} cm{sup 2} {center_dot} sec{sup -1} for Ni{sub 2}(Cr,Mo) at 760 K.

This paper presents the characterization of potential feed for processing relatively low radioactive waste tanks. The feed characterization is based on waste characterization data extracted from the waste characterization system. This data is compared to salt cake sample results from Tanks 37, 38, and 41.

ICAM-4, a newly characterized adhesion molecule, is expressed early in human erythropoiesis and functions as a ligand for binding a4b1 and aV integrin-expressing cells. Within the bone marrow, erythroblasts surround central macrophages forming erythroblastic islands. Evidence suggests that these islands are highly specialized subcompartments where cell adhesion events, in concert with cytokines, play critical roles in regulating erythropoiesis and apoptosis. Since erythroblasts express a4b1 and ICAM-4 and macrophages exhibit aV, ICAM-4 is an attractive candidate for mediating cellular interactions within erythroblastic islands. To determine whether ICAM-4 binding properties are conserved across species, we first cloned and sequenced the murine homologue. The translated amino acid sequence showed 68 percent overall identity with human ICAM-4. Using recombinant murine ICAM-4 extracellular domains, we discovered that hematopoietic a4b1-expressing HEL cells and non-hematopoietic aV-expressing FLY cells adhered to mouse ICAM-4. Cell adhesion studies showed that FLY and HEL cells bound to mouse and human proteins with similar avidity. These data strongly suggest conservation of integrin-binding properties across species. Importantly, we characterized a novel second splice cDNA that would be predicted to encode an ICAM-4 isoform, lacking the membrane-spanning domain. Erythroblasts express both isoforms of ICAM-4. COS-7 cells transfected with GFP constructs of prototypic or novel …

Small-scale (15 to 50 mL) dissolution equilibrium tests were performed on surrogate waste representing typical saltcake at the Savannah River and Hanford Sites. The primary objectives of this study were to gain a better understanding of the solid-liquid equilibrium of simulated-waste saltcakes and chemistry of the dissolved salt solutions. These tests were performed in preparation for similar dissolution tests with actual-waste saltcakes. Two types of tests (single-wash and multiple-wash) were performed at two temperatures (25 degrees Celsius and 50 degrees Celsius) for each saltcake simulant. The compositions of the supernatant fluids are provided for both types of dissolution tests, and profiles of the elution of each salt component are provided for the multiple-wash tests. The conclusions from these tests follow: (1) For both salt waste surrogates, dissolution of the soluble components was achieved at less than a 2:1 mass ratio of inhibited water to saltcake during multiple-wash tests., (2) Dissolution of the Hanford S-112 simulant resulted in a relatively large weight percentage of residual insoluble material (4.2 wt. percent), which was identified as a mixture of Al(OH)3 phases (bayerite and gibbsite)., and (3) The profiles for the relative elution of anions from saltcake during dissolution exhibit distinctions that are dependent …

As algebraic multigrid (AMG) can be applied to a wide variety of problems on extremely large, unstructured grids on the one hand and massively parallel computer systems are available on the other hand, there has been a need for parallel implementations of AMG. This report analyses the performance of BoomerAMG[1], a parallel algorithm developed at Lawrence Livermore National Laboratory. Abstracting the implementation we describe the basic components of the costly setup phase and analyze their behavior in a (massively) parallel distributed memory environment. We present numerical results, compare them to the developed theory and finally aim at possible improvements in the future.

Recital presented at Winspear Hall at the Murchison Performing Arts Center.

Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.

With the human genome sequence now available and high quality draft sequences of mouse, rat and many other creatures recently or soon to be released, the field of Genomics has entered an especially exciting phase. The raw materials for locating the {approx}30-40,000 human genes and understanding their basic structure are now online; next, the research community must begin to unravel the mechanisms through which those genes create the complexity of life. Laboratories around the world are already beginning to focus on cataloguing the times, sites and conditions under which each gene is active; others are racing to predict, and then experimentally analyze, the structures of proteins that human genes encode. These activities are extremely important, but they will not reveal the mechanisms through which the correct proteins are activated precisely in the specific cells and at the particular time that is required for normal developmental, health, and in response to the environment. Although we understand well the three-letter code through which genes dictate the production of proteins, the codes through which genes are turned on and off in precise, cell-specific patterns remain a mystery. Unraveling these codes are essential to understanding the functions of genes and the role of human …

Concurrent resolution introduced by the Texas House of Representatives and Senate relating to designating March 6, 2003, as Mount Vernon/Franklin County Day at the State Capitol.

Since routine monitoring data show that blue-green algae concentrate radioactivity from water by factors as great as 10,000, this study was initiated to investigate the uptake and retention patterns of specific radionuclides by the dominant genera of blue-green algae in the reactor effluents. Plectonema purpureum was selected for this study.

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Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.