Lottery Action, August 9-22, 2004, Vol. 11, no. 15

Iowa Lottery Authority Retailer Information Newsletter

Affirmative Action in Iowa, September 2003

This report is prepared pursuant to Iowa Code Section 19B.5. This Section required The Department of Administrative Services shall submit a report on the condition of affirmative action, diversity, and multicultural programs in state agencies covered by subsection 1 by September 30 of each year to the governor and the general assembly. Subsection 1 requires the head of each state agency to submit annual report of the affirmative action accomplishments of that agency to the Department of Administrative services.

Seismic attenuation and velocity dispersion in heterogeneous partially saturated porous rocks

Using a numerical approach, we explore wave-induced fluid flow effects in partially saturated porous rocks in which the gas-water saturation patterns are governed by mesoscopic heterogeneities associated with the dry frame properties. The link between the dry frame properties and the gas saturation is defined by the assumption of capillary pressure equilibrium, which in the presence of heterogeneity implies that neighbouring regions can exhibit different levels of saturation. To determine the equivalent attenuation and phase velocity of the synthetic rock samples considered in this study, we apply a numerical upscaling procedure, which permits to take into account mesoscopic heterogeneities associated with the dry frame properties as well as spatially continuous variations of the pore fluid properties. The multiscale nature of the fluid saturation is taken into account by locally computing the physical properties of an effective fluid, which are then used for the larger-scale simulations. We consider two sets of numerical experiments to analyse such effects in heterogeneous partially saturated porous media, where the saturation field is determined by variations in porosity and clay content, respectively. In both cases we also evaluate the seismic responses of corresponding binary, patchy-type saturation patterns. Our results indicate that significant attenuation and modest velocity dispersion effects take place in this kind of media for both binary patchy-type and spatially continuous gas saturation patterns and in particular in the presence of relatively small amounts of gas. The numerical experiments also show that the nature of the gas distribution patterns is a critical parameter controlling the seismic responses of these environments, since attenuation and velocity dispersion effects are much more significant and occur over a broader saturation range for binary patchy-type gas-water distributions. This analysis therefore suggests that the physical mechanisms governing partial saturation should be accounted for when analysing seismic data in a poroelastic framework. In this context, heterogeneities associated with the dry frame properties, which do not play important roles in wave-induced fluid flow processes per se, should be taken into account since they may determine the kind of gas distribution pattern taking place in the porous rock.

Lottery Action, August 23-September 9, 2004, Vol. 11, no. 16

Iowa Lottery Retailer Newsletter

Lottery Action, September 27-October 10, 2004, Vol. 11, no. 18

Iowa Lottery Retailer Newsletter

Lottery Action, October 11-24, 2004, Vol. 11, no. 19

Iowa Lottery Retailer Newsletter

Lottery Action, October 25-November 14, 2004, Vol. 11, no. 20

Iowa Lottery Retailer Newsletter

Affirmative Action in Iowa, September 2004

This report is prepared pursuant to Iowa Code Section 19B.5, requiring the Department of Administrative Services to submit a report on the condition of affirmative action, diversity, and multicultural programs in state agencies by September 30 of each year to the governor and the general assembly. Additionally, the report summarizes the annual reports of the affirmative action accomplishments submitted to the Department of Administrative Services by agency directors.

Altered growth in male peroxisome proliferator-activated receptor gamma (PPARgamma) heterozygous mice: involvement of PPARgamma in a negative feedback regulation of growth hormone action.

The peroxisome proliferator-activated receptor gamma (PPARgamma) plays a major role in fat tissue development and physiology. Mutations in the gene encoding this receptor have been associated to disorders in lipid metabolism. A thorough investigation of mice in which one PPARgamma allele has been mutated reveals that male PPARgamma heterozygous (PPARgamma +/-) mice exhibit a reduced body size associated with decreased body weight, reflecting lean mass reduction. This phenotype is reproduced when treating the mice with a PPARgamma- specific antagonist. Monosodium glutamate treatment, which induces weight gain and alters body growth in wild-type mice, further aggravates the growth defect of PPARgamma +/- mice. The levels of circulating GH and that of its downstream effector, IGF-I, are not altered in mutant mice. However, the IGF-I mRNA level is decreased in white adipose tissue (WAT) of PPARgamma +/- mice and is not changed by acute administration of recombinant human GH, suggesting an altered GH action in the mutant animals. Importantly, expression of the gene encoding the suppressor of cytokine signaling-2, which is an essential negative regulator of GH signaling, is strongly increased in the WAT of PPARgamma +/- mice. Although the relationship between the altered GH signaling in WAT and reduced body size remains unclear, our results suggest a novel role of PPARgamma in GH signaling, which might contribute to the metabolic disorder affecting insulin signaling in PPARgamma mutant mice.

Lottery Action, November 15-28, 2004, Vol. 11, no. 12

Iowa Lottery Retailer Newsletter

Lottery Action, November 21 - December 12, 2004, Vol. 11, no 22

Lottery Newsletter for Lottery Retailers

Lottery Action, December 13, 2004 - January 2, 2005, Vol. 11, no. 23

Iowa Lottery Newsletter for Retailers

Lottery Action, January 3-23, 2005, vol. 12, no. 1

Iowa Lottery Newsletter for Retailers

Lottery Action, January 26 - February 6, 2005, Vol. 12, No. 2

Iowa Lottery Newsletter for Retailers