1,523 Works

How Much Household Instability Do Children Experience While Growing Up?

R. Kelly Raley, Inbar Weiss, Robert Reynolds & Shannon E. Cavanagh
While most studies of children’s family changes and instability have focused on changes in mothers’ marital and cohabiting relationships, other adults and children entering or leaving households also contribute to changes in who children live with. PRC faculty research associates Kelly Raley and Shannon Cavanagh, PRC staff member Robert Reynolds, and PRC graduate student trainee Inbar Weiss use data from the 2008 Survey of Income and Program Participation to expand the description of children’s household...

Does the Death of a Child Prior to Midlife Increase Later Dementia Risk for Parents? Is this Disadvantage Greater for Black Parents than for White Parents?

Debra Umberson, Rachel Donnelly, Minle Xu, Mateo Farina & Michael A. Garcia
Dementia is a growing public health concern in the United States. Like other health outcomes in the U.S., the burdens of dementia are borne more heavily by black Americans than they are for white Americans. A number of biological, psychological, social, and behavioral mechanisms are associated with increased risk for dementia, but specific life course events that could trigger these mechanisms, such as the death of a child, have been largely unstudied. In this brief,...

Doctoral thesis recital (drums)

Fabio Augustinis
Go get it ; The sun in Montreal / Pat Metheny -- Why don't I / Sonny Rollins -- Everybody's party ; Hammock soliloquy / John Scofield -- Think before you think / Bill Stewart

Doctoral thesis recital (horn), chamber

Trio for oboe, horn, and piano, op. 188, in A minor / Reinecke -- [Unnamed composition for 2 horns and piano ] / Naigus -- Quintet no. 2 for flute, oboe, clarinet, horn, and bassoon / David Maslanka

Method for geophysical exploration using electromagnetic array

Francis X. Bostick
An electromagnetic survey method for geophysical exploration, in which the variations in the earth's magnetic field are measured in two, non-parallel directions at one point in the survey area. Simultaneously, the variations in the earth's electrical field parallel to the survey line are measured at a number of points along the survey line. These measured variations are transformed to the frequency domain, and then the horizontal component of the magnetic field orthogonal to the direction...

Method using a d.c. source for determining resistivity distribution of the earth as a function of depth

Francis X. Bostick
An electromagnetic survey method for geophysical exploration, in which the variations in the earth's magnetic field are measured in two, non-parallel directions at one point in the survey area. Simultaneously, the variations in the earth's electrical field parallel to the survey line are measured at a number of points along the survey line. These measured variations are transformed to the frequency domain, and then the horizontal component of the magnetic field orthogonal to the direction...

Method and apparatus for managing recoil of electromagnetic guns

William F. Weldon
A power supply generating a reaction torque generally simultaneously with its power output is utilized to supply power to fire the railgun. The power supply and the railgun are cooperatively mounted together such that the reaction torque of the power supply upon discharge counteracts the recoil force of the railgun, thereby transferring lateral forces through the compulsator to a position in the power supply which is removed from the position of the coupling between the...

Method and apparatus for spinning projectiles fired from a rail gun

William F. Weldon
A method and apparatus for imparting a spin to a projectile fired from a railgun. A projectile which is rotatable within the barrel of the railgun, and which includes a conductive element, is caused to pass through a magnetic field, causing the projectile to rotate. Preferably, the magnetic field will be established by a solenoidal magnet which is coaxial with the path of the projectile.

Synchronization circuit for parallel processing

An apparatus and method for synchronizing parallel processors utilizing a lookahead synchronization circuit is provided by the present invention. A five gate logic circuit is formed as a cell and this cell can serve as a node in a tree logic operation circuit. The tree is capable of realizing a variety of fetch-and-operation, priority and operation-and-broadcast primitives and the cell can serve in a carry circuit of a binary adder. The tree may be pruned...

SIS-A New SFF Method Based on Powder Sintering

Behrokh Khoshnevis, Bahram Asiabanpour, Mehdi Mojdeh, Babar Koraishy, Kurt Palmer & Zongliang Deng
Selective Inhibition of Sintering is a layered fabrication process which is capable of rapidly producing accurate functional parts out of polymers and metals using a relatively inexpensive machine. This article presents a brief overview of the research and development aimed at establishing the feasibility and the potential of the process.

Open Access Week 2019

OA Week is an international event designed to increase awareness of open access issues. For OA Week 2019, UT Libraries hosted an informational table to inform students and faculty about open access and open education. We share here an updated version of the informational poster we created using Piktochart.

A partial report on the geology of western Texas

George Gettz Shumard
A partial report on the geology of western Texas, consisting of a general geological report and a journal of geological observations along the routes traveled by the expedition between Indianola, Texas, and the valley of the Mimbres, New Mexico, during the years 1855 and 1856; with an appendix giving a detailed report on the geology of Grayson County. By Prof. Geo. G. Shumard, Assistant State Geologist of Texas

Irrigation systems in Texas

William Ferguson Hutson

The Van oil field, Van Zandt County, Texas

Accompanied by 26 fold-outs: Plates 2-27. Plate 27: Map of the Van uplift with unitized area (Van Joint Account) outlined by stippling. Plate 26: Schlumberger survey record and geological log of a typical well penetrating a fairly complete section of the Woodbine formation in the Van field. Plate 25: Outline of the original area and the present area of accumulation of oil and gas in the Woodbine formation on the Van uplift. Plate 24: Subsurface...

Water-level data from observation wells in the southern High Plains of Texas, 1965-70

A. Wayne Wyatt
By A. Wayne Wyatt and the staff members of the Water Levels Section

Fluorspar in Brewster County, Texas

The larger invertebrate fossils of the Navarro Group of Texas : (exclusive of corals and crustaceans and exclusive of the fauna of the Escondido formation)

Accompanied by 6 foldout tables. Table I : Distribution and stratigraphic range of fossils of the Neylandville marl. Table II : Distribution and stratigraphic range of fossils of the Nacatoch sand. Table III : Distribution and stratigraphic range of fossils of the Corsicana marl. Table IV : Distribution and stratigraphic range of fossils of the Kemp clay. Table V : Geographic and stratigraphic range of fossils species of the Navarro group. Table VI : Range...

Review of the geology of Texas

Accompanied by 1 fold-out map : Geological Map of Texas. Plate I : Sketch map showing belts where known oil-bearing horizons lie at suitable depths for exploration. Bulletin of the University of Texas ; 1916 : no. 44

Systems and methods for determining a rheological parameter

Eric Van Oort, Ali Karimi Vajargah & Besmir B. Hoxha
The present disclosure relates to systems and methods for determining a rheological parameter of a fluid within a wellbore. The methods comprise receiving a plurality of differential pressure measurements of a fluid within a flow region of the wellbore; storing the plurality of differential pressure measurements; generating a curve based on the plurality of differential pressure measurements; and determining the rheological parameter of the fluid using the curve. The systems comprise a conduit arranged in...

Membraneless seawater desalination

Richard A. Crooks, Kyle N. Knust &
Disclosed are microfluidic devices and systems for the desalination of water. The devices and systems can include an electrode configured to generate an electric field gradient in proximity to an intersection formed by the divergence of two microfluidic channels from an inlet channel. Under an applied bias and in the presence of a pressure driven flow of saltwater, the electric field gradient can preferentially direct ions in saltwater into one of the diverging microfluidic channels,...

Gels for encapsulation of biological materials

Jeffrey A. Hubbell, , Neil P. Desai, , Jennifer L. Hill & Syed Hossainy
Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body,...

Molecular beam epitaxy effusion cell

Terry J. Mattord
A molecular beam epitaxy effusion cell for growing epitaxial layers upon a semiconductor substrate by control of a collimated beam of molecules generated from a source material in a high vacuum environment in order to control the hyper abrupt stoichiometry of the effusion flux. A heated control assembly is used to control the size of the exit openings of the effusion cell. The control assembly comprises a boroelectric heating member such as a grating having...

Artificial bone implants

Richard J. Lagow, Harris L. Marcus, Joseph J. Beaman, Joel W. Barlow, Richard H. Crawford &
A process for making bone implants from calcium phosphate powders is disclosed. This process involves selectively fusing layers of calcium powders that have been coated or mixed with polymer binders. The calcium powder mixture may be formed into layers and the polymer fused with a laser. Complex three-dimensional geometrical shapes can be automatically replicated or modified using this approach.

Combined fluorescence and reflectance spectroscopy

Rebecca R. Richards-Kortum, Anthony J. Durkin, Urs Utzinger, Holger Fuchs, Ann M. Gillenwater & Douglas L. Heintzelman
Methods and apparatus for performing fluorescence and spatially resolved reflectance spectroscopy on a sample. A sample is irradiated with a fluorescence excitation fiber and radiation is collected from the sample with a fluorescence collection fiber and detected to form fluorescence spectra. The sample is also illuminated with a reflectance illumination fiber and reflected light from the sample is collected at a plurality of collection positions and detected to form spatially resolved reflectance spectra. The fibers...

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