Daily newspaper from Alvin, Texas 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.

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

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

The results of a one year program to characterize corrosion of solar collector alloys in aqueous heat-transfer media are summarized. The program involved a literature review and a laboratory investigation of corrosion in uninhibited solutions. It consisted of three separate tasks, as follows: review of the state-of-the-art of solar collector corrosion processes; study of corrosion in multimetallic systems; and determination of interaction between different waters and chemical antifreeze additives. Task 1 involved a comprehensive review of published literature concerning corrosion under solar collector operating conditions. The reivew also incorporated data from related technologies, specifically, from research performed on automotive cooling systems, cooling towers, and heat exchangers. Task 2 consisted of determining the corrosion behavior of candidate alloys of construction for solar collectors in different types of aqueous coolants containing various concentrations of corrosive ionic species. Task 3 involved measuring the degradation rates of glycol-based heat-transfer media, and also evaluating the effects of degradation on the corrosion behavior of metallic collector materials.

Photograph of a mother and father holding their baby towards the camera while laughing on a university park bench. The family is part of the Housing Cover Family program.

Chemical degradation of aqueous glycol solutions was monitored during stagnant exposure at temperatures of 100 C and 180 C. Changes in corrosivity of the solutions toward alloys of construction in solar collectors were also determined. The solutions consisted of equivolume mixtures of reagent grade ethylene glycol and water, and propylene glycol and water. The water was either distilled/deionized, or a mildy corrosive solution containing 100 ppM each of chloride, sulfate, and bicarbonate ions. The solutions were exposed with and without contact with metals, these metals being unalloyed copper (CA 122), 1018 steel, and aluminum alloys 1100, 3003, and 6061. Either air or nitrogen was purged through the solutions at 100 C, whereas for solutions at 180 C the autoclave head space was filled with air or nitrogen prior to sealing the autoclave. Degradation was measured by noting changes in solution pH and accumulation of organic acids during prolonged elevated temperature exposures. Changes in corrosivity were measured in terms of weight loss, polarization resistance, and pit depth on metal coupons suspended in the solutions during exposure.

Photograph of a mother and father holding their baby towards the camera as they smile and pose in a park outside of a university building. The family is part of the Housing Cover Family program at the university.

Photograph of a happy family sitting on a bench outside of a university's park. They consist of a husband, wife, and infant. The husband is holding the laughing baby up for the camera while his wife sits smiling next to him. The family are members of the housing cover program at the university.

Photograph of a father and mother holding their baby while smiling at the camera and standing in the middle of a university courtyard. They are part of the Housing Cover Family program at the university.

Photograph of an unidentified man and his infant standing beside a park bench. They stand slightly off camera in the middle of the park. A man walks up a set of stairs in the background.

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

Student newspaper of Weatherford High School in Weatherford, Texas that includes school news and information along with advertising.

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

Computer simulations are presented of the reflection and heating due to stimulated Raman backscatter of intense laser light in large regions of underdense plasma. The heated electron distribution is found to be approximately a Maxwellian of temperature (m/sub e//2)v/sub p//sup 2/, where v/sub p/ is the phase velocity of the electron plasma wave. A simple model of the reflection is presented. Raman may cause a pre-heat problem with large laser fusion reactor targets.

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

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

Photograph of a mother and father holding their baby while smiling towards the camera and sitting at the edge of a university park. They are part of the Housing Cover Family program.

Weekly student newspaper from Howard Payne University in Brownwood, Texas that includes local, state and campus news along with advertising.

Weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes local, state and campus news along with advertising.

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

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

Weekly newsletter of Congregation Beth Yeshurun in Houston, including news and events, upcoming services, member announcements, editorials, and other information of interest to congregants.

A video of a behind the scenes look of how music was composed in the 20th century.