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

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Photograph of a band performing during the Denton Arts & Jazz Festival. They are playing a small blue trumpet, a clarinet, a sousaphone, and a banjo.

Photograph of children riding in a plastic barrel that was made into a mini train car in Quakertown Park. There are other children and parents following behind them and standing under the trees near the Denton Civic Center. They are all gathered for the Denton Arts & Jazz Festival.

Photograph of a clown dressed in a red and white striped shirt with overalls covered in buttons and bandanna patches. He is interacting with a young girl at the Denton Arts & Jazz Festival.

Photograph of a clown dressed in a red and white striped shirt with overalls covered in buttons and bandanna patches. He is interacting with a young girl with a streamer crown at his balloon cart.

Photograph of a clown dressed in a red and white striped shirt with overalls covered in buttons. He is putting the finishing touches on a bright pink balloon dog.

Photograph of the 'Hitchhiking Guitarman' Dean Strickland playing an acoustic guitar at the Denton Arts & Jazz Festival in Quakertown Park. He is on a stage and has his guitar case, which is covered in stickers, at his feet.

Photograph of a man cooking tortillas and making what appears to be quesadillas on a large cook-top. There is a metal roof above him and a truck and trailer behind him.

Photograph of children and parents riding in a mini train, made out of plastic barrels, in Quakertown Park. The train is going around a tree and the conductor is driving in a yellow-sided box. They are all gathered together for the Denton Arts & Jazz Festival.

Photograph of three members of a band performing during the Denton Arts & Jazz Festival. They are playing a clarinet, a sousaphone, and a banjo. Behind them is a table with drink coolers lined up on it and a large inflatable drink.

Photograph of attendees and a man on stilts walking across a stone-veneer walking bridge in Quakertown Park. There are trees in the park behind them and canopy tents set-up for the Denton Arts & Jazz Festival as well.

Little is known about the long-term impacts of metal contamination on the microbiota of anoxic lake sediments. In this study, we examined microbial biomass and metals (arsenic, cadmium, chromium, copper, iron, lead, manganese, and zinc) in the sediments of Lake DePue, a backwater lake located near a former zinc smelter. Sediment core samples were examined using two independent measures for microbial biomass (total microscopic counts and total phospholipid-phosphate concentrations), and for various fractions of each metal (pore water extracts, sequential extractions, and total extracts of all studied metals and zinc speciation by X-ray absorption fine structure (XAFS). Zinc concentrations were up to 1000 times higher than reported for sediments in the adjacent Illinois River, and ranged from 21,400 mg/kg near the source to 1,680 mg/kg near the river. However, solid metal fractions were not well correlated with pore water concentrations, and were not good predictors of biomass concentrations. Instead, biomass, which varied among sites by as much as two-times, was inversely correlated with concentrations of pore water zinc and arsenic as established by multiple linear regression. Monitoring of other parameters known to naturally influence biomass in sediments (e.g., organic carbon concentrations, nitrogen concentrations, pH, sediment texture, and macrophytes) revealed no …

Book chapter discussing computational studies of the thermochemistry of the atmospheric iodine reservoirs HOI and IONO₂.

Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.

IKNO (Innovation and KNOwledge) is a proposal for a multi-user facility based on an electron storage ring optimized for the generation of coherent synchrotron radiation (CSR) in the terahertz frequency range, and of broadband incoherent synchrotron radiation (SR) ranging from the IR to the VUV. IKNO can be operated in an ultra-stable CSR mode with photon flux in the terahertz frequency region up to nine orders of magnitude higher than in existing 3rd generation light sources. Simultaneously to the CSR operation, broadband incoherent SR up to VUV frequencies is available at the beamline ports. The main characteristics of the IKNO storage and its performance in terms of CSR and incoherent SR are described in this paper. The proposed location for the infrastructure facility is in Sardinia, Italy.

The adsorption and dissociation of water on a Ru(0001) surface containing a small amount ({le} 3 %) of carbon impurities was studied by scanning tunneling microscopy (STM). Various surface species are formed depending on the temperature. These include molecular H{sub 2}O, H{sub 2}O-C complexes, H, O, OH and CH. Clusters of either pure H{sub 2}O or mixed H{sub 2}O-OH species are also formed. Each of these species produces a characteristic contrast in the STM images and can be identified by experiment and by ab initio total energy calculations coupled with STM image simulations. Manipulation of individual species via excitation of vibrational modes with the tunneling electrons has been used as supporting evidence.