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Comparative Morphology of Sensilla Styloconica on the Proboscis of North American Nymphalidae and Other Selected Taxa: Systematic and Ecological Considerations.

Description: Sensilla styloconica on the proboscis of 107 species of North American and tropical butterflies were comparatively studied using the scanning electron microscope. Focus was on 76 species of North American Nymphalidae representing 45 genera and 11 subfamilies. Nomenclature for generalized and specific types of nymphalid sensilla is proposed. Written descriptions and micrographs are presented for each species studied. Morphological features were generally consistent for all or most species withi… more
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Date: December 2001
Creator: Petr, Daniel
Partner: UNT Libraries
open access

Biologic response to complex blast waves

Description: Small, bare charges were detonated inside an M59 armored personnel carrier (APC) in an attempt to simulate the complex blast waves generated by the jets from shaped-charge warheads penetrating into armored vehicles. Anesthetized sheep were placed inside the APC at 92- and 122-cm ranges from 57- or 113-g pentolite charges. Pressure-time was measured by pressure transducers either mounted on the animals or free standing at comparable ranges on the opposite side of the vehicle. In general, the wav… more
Date: January 1, 1985
Creator: Richmond, D. R.; Yelverton, J. T.; Fletcher, E. R. & Phillips, Y. Y.
Partner: UNT Libraries Government Documents Department
open access

Medial Medulla Networks in Culture: a Multichannel Electrophysiologic and Pharmacological Study

Description: Spontaneously active primary cultures obtained from dissociated embryonic medial medulla tissue were grown on microelectrode arrays for investigating burst patterns and pharmacological responses of respiratory-related neurons. Multichannel burst rates and spike production were used as primary variables for analysis. Pacemaker-like neurons were identified by continued spiking under low Ca++/high Mg++conditions. The number of pacemakers increased with time under synaptic blocking medium. Sensitiv… more
Date: August 1998
Creator: Keefer, Edward W. (Edward Wesley)
Partner: UNT Libraries
open access

Multipolar corneal-shaping electrode

Description: The disclosure relates to a multipolar probe using radiofrequency energy to reshape the cornea of an eye. The surface of the cornea is flushed continuously with a conductive coolant during operation.
Date: April 30, 1981
Creator: Doss, J.D.
Partner: UNT Libraries Government Documents Department
open access

Tissue Distribution and Storage Forms of Vitamin B12 Injected and Orally Administered to the Dog

Description: Previous attempts by the present authors to compare the behavior of orally administered vitamin B12 with that of injected material have been inconclusive. Thus, 30 days after administration to normal humans, 0.19% of a tracer amount (0.5 μg) of injected radioactive vitamin B12 is excreted per day; and in an independent study, the eventual daily output was found to be 0.23% of a 3 μg dose. By contrast the total excretion rate of normal vitamin B12 from body stores appears to be only ≈0.03% per d… more
Date: February 1, 1963
Creator: Rosenblum, Charles; Reizenstein, Peter G.; Cronicite, Eugene P. & Meriwether, Henry T.
Partner: UNT Libraries Government Documents Department
open access

The mitochondrial localized CISD-3.1/CISD-3.2 proteins are required to maintain normal germline structure and function in Caenorhabditis elegans

Description: Article isolating the cisd-3.2(pnIs68) mutant that resulted in physiological and fitness defects including germline abnormalities that are associated with abnormal stem cell niche and disrupted formation of bivalent chromosomes. Results further support the idea that the CISD protein family is required for mitochondrial function that supports important functions in animals including overall fitness and germline viability.
Date: February 5, 2021
Creator: King, Skylar D.; Gray, Chipo F.; Song, Luhua; Mittler, Ron & Padilla, Pamela A.
Partner: UNT College of Science

Development of Facultative Air Breathing in Bristlenose Plecos (Ancistrus cirrhosus)

Description: Data collected on air breathing development in the bristlenose pleco. Bristlenose plecos breath air with a highly vascularized stomach when exposed to aquatic hypoxic conditions. This study looked at the development of this behavior and when the fish fist began to breathe air.
Date: January 2024
Creator: Crowder, Lauren W. & Dzialowski, Edward M. (Edward Michael)
Partner: UNT College of Science
open access

Social Interest and the Communications Organ Score in Human Figure Drawings

Description: The relationship between social interest and personal adjustment described by Adler seems to imply that the CO score is positively correlated with personal adjustment. If the CO score in a human figure drawing indicates the degree of social interest manifested by an individual, it is reasoned that the CO score will measure that individual's adjustment level.
Date: August 1970
Creator: Long, Wesley L.
Partner: UNT Libraries
open access

Cellular proliferation and regeneration following tissue damage. Progress report

Description: Tissue cultures of rabbit retinal vasculature were studied in vivo and in vitro by scanning electron microscopy to elucidate the regnerative process from an injury. Human lens are now being compared with a goal for developing a bioassay for testing the effects of potentially toxic agents. (PCS)
Date: January 1, 1978
Creator: Harding, C.V.
Partner: UNT Libraries Government Documents Department
open access

CANCELLED EMT and back again: does cellular plasticity fuel neoplastic progression?

Description: Epithelial-mesenchymal transition (EMT) is a cellular transdifferentiation program that facilitates organ morphogenesis and tissue remodeling in physiological processes such as embryonic development and wound healing. However, a similar phenotypic conversion is also detected in fibrotic diseases and neoplasia, in which it is associated with disease progression. EMT in cancer epithelial cells often appears to be an incomplete and bi-directional process. Here we discuss the phenomenon of EMT as i… more
Date: February 24, 2007
Creator: Turley, Eva A.; Veiseh, Mandana; Radisky, Derek C. & Bissell, MinaJ.
Partner: UNT Libraries Government Documents Department
open access

Of extracellular matrix, scaffolds, and signaling: Tissuearchitectureregulates development, homeostasis, and cancer

Description: The microenvironment surrounding cells influences gene expression, such that a cell's behavior is largely determined by its interactions with the extracellular matrix, neighboring cells, and soluble cues released locally or by distant tissues. We describe the essential role of context and organ structure in directing mammary gland development and differentiated function, and in determining response to oncogenic insults including mutations. We expand on the concept of 'dynamic reciprocity' to pr… more
Date: March 9, 2006
Creator: Nelson, Celeste M. & Bissell, Mina J.
Partner: UNT Libraries Government Documents Department
open access

Auditory speech preprocessors

Description: A nonlinear transmission line model of the cochlea (Zweig 1988) is proposed as the basis for a novel speech preprocessor. Sounds of different intensities, such as voiced and unvoiced speech, are preprocessed in radically different ways. The Q's of the preprocessor's nonlinear filters vary with input amplitude, higher Q's (longer integration times) corresponding to quieter sounds. Like the cochlea, the preprocessor acts as a ''subthreshold laser'' that traps and amplifies low level signals, ther… more
Date: January 1, 1989
Creator: Zweig, G.
Partner: UNT Libraries Government Documents Department
open access

Extracellular Matrix, Nuclear and Chromatin Structure and Gene Expression in Normal Tissues and Malignant Tumors: A Work in Progress

Description: Almost three decades ago, we presented a model where theextracellular matrix (ECM) was postulated to influence gene expressionand tissue-specificity through the action of ECM receptors and thecytoskeleton. This hypothesis implied that ECM molecules could signal tothe nucleus and that the unit of function in higher organisms was not thecell alone, but the cell plus its microenvironment. We now know that ECMinvokes changes in tissue and organ architecture and that tissue, cell,nuclear, and chroma… more
Date: August 1, 2006
Creator: Spencer, Virginia A.; Xu, Ren & Bissell, Mina J.
Partner: UNT Libraries Government Documents Department
open access

VARIATIONS IN REPRODUCTIVE TOXICANT IDENTIFICATION

Description: Reproductive toxicants are a very important class of compounds. They present unique hazards to those of child bearing ages, perform their 'dirty work' using a wide variety of mechanisms on a number of different organs, and are regulatorily important. Because of all of this, properly identifying reproductive toxicants is important, but fraught with difficulty. In this paper we will describe types or reproductive toxicants, their importance, and both mistakes and good practices that people who ar… more
Date: May 13, 2008
Creator: Simmons, F
Partner: UNT Libraries Government Documents Department
open access

The Microbeam as a Tool in Radiobiology

Description: In the analysis of the effect of ionizing radiation on living systems, the problem is complicated by the interaction of one part of the system with other parts. If an entire mouse is subjected to radiation, only a few of the most radiosensitive organs, the "weak links," react to the insult and essentially limit the size of the dose delivered since there is little to be learned from irradiating a dead mouse. Thus an insensitive organ like muscle will not respond at all to a total body dose. Like… more
Date: February 1, 1963
Creator: Curtis, Howard J.
Partner: UNT Libraries Government Documents Department

[King's College Chapel Interior]

Description: Photograph of the interior of the King's College Chapel in Cambridge, England. On the right side, large stained-glass windows arch upwards toward the carved stone ceiling. To the left of the windows, the dark silhouette of the organ is visible.
Date: September 1970
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design
open access

Thermal treatment technique for cancer-eye

Description: In the treatment of bovine ''cancer-eye'', heat localization is especially important when the tumor is located on the cornea and somewhat less critical for tumors on the lid. The device was developed by LASL for this application. Electric current, at a frequency of approximately 2 MHZ flows through the tumor and between the two electrodes. A thermistor in the tip of one of the electrodes monitors temperature. When temperature exceeds about 48.5/sup 0/C, a once-per-second beep is initiated to no… more
Date: January 1, 1978
Creator: Doss, J.D.
Partner: UNT Libraries Government Documents Department
open access

[News Script: Organ]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about the world's first digital organ being unveiled in New York City.
Date: May 20, 1971, 12:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
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