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Extrusion and rolling processes exhibiting large amounts of plastic flow are analyzed using a finite element technique that is based on a modified creeping viscous flow approximation. The technique, called the initial stress-rate method, iteratively corrects creeping viscous flow solutions to generate results that include elastic response. The momentum equations have been coupled with the energy equation to provide the capability to predict thermomechanical response during forming operations.

An article fro Aerospace Historian on the origins and life of Women Airforce Service Pilots in World War II, with an introduction from aviatrix and WASP flight instructor, Jacqueline Cochran.

Two types of evacuated tube solar collectors have been operated in space heating, cooling and domestic hot water heating systems in Colorado State University Solar House I. An experimental collector from Corning Glass Works supplied heat to the system from January 1977 through February 1978, and an experimental collector from Philips Research Laboratory, Aachen, which is currently in use, has been operating since August 1978. A flat absorber plate inside a single-walled glass tube is used in the Corning design, whereas heat is conducted through a single glass wall to an external heat exchanger plate in the Philips collector. In comparison with conventional flat-plate collectors, both types show reduced heat losses and improved efficiency. For space heating and hot water supply in winter, the solar delivery efficiency of the Corning collector ranged from 49% to 60% of the incident solar energy. The portion of the space heating and domestic hot water load carried by solar energy through fall and winter ranged from 50% to 74%, with a four-month contribution of 61% of the total requirements. Data on the Philips collector are currently being analyzed.

Abstract: Two nuclear accidents involving a plutonium sphere just subcritical in size occurred at the Los Alamos Laboratory, LA-1 in 1945 and LA-2 in 1946. Because remote control devices were deemed unreliable at the time, the tamper material (tungsten carbide bricks in LA-1 and beryllium hemispheres in LA-2) was added by hand with the operator standing next to the assembly. In each case the critical size of the assembly was accidentally exceeded and the resultant exponentially increasing chain reaction emitted a burst of neutrons and gamma rays. Ten persons were exposed to the radiation bursts which were largely composed of neutrons. The doses ranged from fatal in the case of the two operators, to small in the case of some survivors. The two operators died within weeks as a result of acute radiation injury. Only six of the eight survivors were available for follow-up study ten or more years after the accident. Four of these six survivors are now dead, but the two living survivors are in excellent health with no clinical or laboratory evidence of late radiation injury. Two of the deceased died of acute myelogenous leukemia, another died at age 83 of refractory anemia, and the fourth of …

A computational approach used for subsurface explosion cratering was extended to hypervelocity impact cratering. Meteor (Barringer) Crater, Arizona, was selected for the first computer simulation because it is one of the most thoroughly studied craters. It is also an excellent example of a simple, bowl-shaped crater and is one of the youngest terrestrial impact craters. Initial conditions for this calculation included a meteorite impact velocity of 15 km/s, meteorite mass of 1.67 x 10/sup 8/ kg, with a corresponding kinetic energy of 1.88 x 10/sup 16/ J (4.5 megatons). A two-dimensional Eulerian finite difference code called SOIL was used for this simulation of a cylindrical iron projectile impacting at normal incidence into a limestone target. For this initial calculation, a Tillotson equation-of-state description for iron and limestone was used with no shear strength. Results obtained for this preliminary calculation of the formation of Meteor Crater are in good agreement with field measurements. A color movie based on this calculation was produced using computer-generated graphics. 19 figures, 5 tables, 63 references.

Fly ash derived from coal combustion contains predominantly spherical particles which consist of an insoluble aluminosilicate glass containing several mineral impurities. An outer layer, 50 to 300 A thick, is rich in many potentially toxic trace elements in the form of simple and complex sulfates. This layer, which is soluble in water, contains essentially all of the particulate sulfur present in fly ash in the form of sulfate. The actual mechanism(s) of formation of particulate sulfate salts are ill-defined but probably involve adsorption of condensation of gaseous sulfur species onto fly ash surfaces within the power plant stack system.

A test bed for experimental evaluation of a fixed solar collector which combines an evacuated glass tube solar receiver with a flat plate/black chrome plated copper absorber and an asymmetric veetrough concentrator was designed and constructed. Earlier predictions of thermal performance were compared with test data acquired for a bare vacuum tube receiver; and receiver tubes with Alzak aluminum, aluminized FEP Teflon film laminated sheet metal and second surface ordinary mirror reflectors. Test results and system economics as well as objectives of an ongoing program to obtain long-term performance data are discussed.

The occurrence of mistral winds in the Mediterranean shows a correlation with blocking activity over the eastern Atlantic. Apparently for this reason periods with a ''midwinter dip'' in the zonal available potential energy of the northern hemisphere are favored by mistral occurrence. There also is a tendency for a 22- to 26-day cycle to appear in pressure gradients at the 500- and 100-mb surfaces along the southern coast of France. Such pressure gradients, if they exceed a certain magnitude, are indicative of mistral episodes.

Article regarding a reunion for former teachers and students of the Palo Pinto School, including location and a list of event officers. A brief history of the school is included.

Photocopy of an editorial from the Abilene Reporter News, section 4-A of the 1978-10-19 paper, discussing the passing and history of Gypsy Ted Sullivan Wylie. The photocopy has three duplicate images on the page.

Draft of the first part of a biographical sketch of Theodor Billroth, "the most famous surgeon of the nineteenth century" describing his surgical and professional accomplishments.

Draft of the first part of a biographical sketch of Theodor Billroth, "the most famous surgeon of the nineteenth century" describing his personal life, ideas, and musical friendships.

In developing the sampling strategy for the seven western states, the Lawrence Livermore Laboratory (LLL) divided the region into geologic and physiographic provinces. A large part of the LLL region of responsibility lies within the arid to semi-arid Basin and Range province. This region is characterized as an area of rather complex geology with internal drainage. The desert-like conditions in many parts of this region result in a unique set of problems which requires a unique reconnaissance program. In this paper, I will describe some of the features of the LLL program which are keyed to the desert environment in the northern Basin and Range province.

Article describes the history of the Jewish community in Oklahoma, with a particular interest in the the Madansky family. Due to the xenophobia that swept the nation in the 1910s and 20s, the family of entrepreneurs "Americanized" their name and became the May brothers.

Article describes how Will Rogers reflected societal issues in his writings and criticism. William R. Brown focuses on the political aspects of Will Rogers' views and the political environment of Oklahoma in the early nineteenth century.

Article describes the land lotteries held in Georgia in the 1830s and the "Indian Removal Bill" that occurred shortly beforehand. Douglas C. Wilms describes the state of the Cherokee Nation during this period and relations with the United States government.

Article describes the controversy ethnologist James Mooney became embroiled in after his documentation and defense of the Peyote religion and traditions within the American Indian tribes he studied.

A copy of Observation of a Black Conservative by Clay Smothers (issue 23).

Article describes the delegation of representatives from the "Five Civilized Tribes" of Indian Territory who met with the Confederate Congress during wartime, and the outcomes of their visit.

Article focuses on the role of Will Rogers as social critic from Oklahoma. Joseph Stout includes excerpts of his writings to explore his views and humor in his newspaper columns, telegrams, books, and articles.

Article describes the process of Osage migration into Oklahoma, from treaties made with the United States government, conflicts with white settlers entering Indian Territory, and eventually establishment of their own community despite many hardships.

Article discusses the history of voluntary as well as involuntary migration of American Indian tribes westward with the encroachment of white settlers, and the impact of treaties created with the United States government.