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Shuttlebox Self-Stimulation Behavior Following Intracerebral Microinjections Of Morphine Into The Ventral Tegmental-Substantia., Craig Anderson Horn Jan 1982

Shuttlebox Self-Stimulation Behavior Following Intracerebral Microinjections Of Morphine Into The Ventral Tegmental-Substantia., Craig Anderson Horn

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Systemic analgesic injections of morphine have been shown to increase the rate at which rats will lever-press for electrical brain stimulation as well as decrease the current intensity required for this self-stimulation. In the shuttlebox paradigm, the animal crosses from one side of the case to the other in order to turn the current on and off. Similar doses of morphine will selectively increase average ON times per crossing without affecting OFF times. It has been suggested that these effects reflect a sensitization of natural reward pathways by the opioids. Previous work has identified the ventral tegmental-substantia nigral area (VT-SN) …

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Memory For Meaning And Sound: A Test Of The Developmental And Difference Theories Of Mental Retardation., Judy C. Dekich Jan 1982

Memory For Meaning And Sound: A Test Of The Developmental And Difference Theories Of Mental Retardation., Judy C. Dekich

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Intellectually, the mentally retarded child is often characterized as being similar to the younger nonretarded child. This concept is implicit in the use of a "mental age" in standardized intelligence tests. The retarded adolescent who obtains a score comparable to that of the average 10 year old is said to have a mental age of 10. The term "retardation" itself denotes a slowing in development rather than any specific defect or deviation in the direction of development. Only approximately 15 percent of all retarded children have moderate to severe defects associated with some organic etiology. The remaining 85% are mildly …

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Self-Stimulation And Morphine Abstinence In The Rat., Judith A. Goodwin Jan 1982

Self-Stimulation And Morphine Abstinence In The Rat., Judith A. Goodwin

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To test the effects of morphine abstinence on shuttlebox self-stimulation, rats were implanted with either a morphine or placebo pellet. Naloxone or saline was administered 48 hours later and animals were observed briefly for abstinence behaviors. Immediately following the observation period, animals were tested in the shuttlebox. Of the ten animals undergoing naloxone-precipitated abstinence, two were behaviorally sedated and had both high ON times and OFF times. The non-sedated abstinent rats self-stimulated at baseline rates. This suggests that an abstinence-induced behavioral sedation masks the reward value of self-stimulation during abstinence and that reward systems supporting self-stimulation function at predrug levels. …

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The Effect Of Nutritional Conditions On Floc Formation In Zoogloea Ramigera., Johanna M. White Jan 1982

The Effect Of Nutritional Conditions On Floc Formation In Zoogloea Ramigera., Johanna M. White

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The formation of bacterial flocs is of crucial importance in the activated sludge process of biological system, treatment waste treatment. In such a generally begins with the settling of large suspended solids from the influent wastewater. The liquid is then channeled into the reaction basin where soluble organic compounds undergo degradation, which is primarily accomplished by the metabolic activity of bacteria, though fungi, algae and protozoa may contribute to the process. Vigorous agitation facilitates contact between substrate molecules and microbes, and aeration maintains the necessary oxygen tension to sustain the aerobic organisms pertinent to the process. During this stage of …

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The Reproductive Cycle Of Sceloporus Undulatus From Alabama Corresponding Plasma Steroid Levels And Comments On Reproductive Variation., Rose Brackin Mckinney Jan 1982

The Reproductive Cycle Of Sceloporus Undulatus From Alabama Corresponding Plasma Steroid Levels And Comments On Reproductive Variation., Rose Brackin Mckinney

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Eastern fence lizards from Alabama were captured and reproductive parameters were measured. In males, the height of the breeding season (spermiogenesis and spermiation) occurred from March to May. Testis mass declined during this time. Spermatozoa were present in the epididymides until July. In June and July, testis mass was minimal. A new spermatogenic cycle had begun by August. Testicular recrudescence occurred in fall with concomitant increase in testis mass. Males had spermatids with a few transforming spermatozoa in their testes as they entered brumation. The longer warm season in Alabama permitted the males to begin spermiogenesis and spermiation earlier and …

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A Correlation Of Microstructure With Hot-Ductility In The Heat-Affected Zone Of Inconel 718., Semih Genculu Jan 1982

A Correlation Of Microstructure With Hot-Ductility In The Heat-Affected Zone Of Inconel 718., Semih Genculu

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Increased performance requirements for structural components and the demand for materials with enhanced properties have significantly increased the problems involved in producing sound welds. Due to the high temperatures and steep temperature gradients in the vicinity of welds, high stresses and complex stress patterns are unavoidable. Though process control parameters can be varied to minimize such stresses, cracking may occur in the fusion zone or in the weld heat-affected zone (HAZ). The objective of this study was to obtain a better understanding of hot cracking in the weld HAZ by making a correlation between the HAZ microstructure and the HAZ …

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Instrumentation For Acquisition Of Mechanical Evoked Potentials From The Hard Palate., Robert Floyd Donehoo Jan 1982

Instrumentation For Acquisition Of Mechanical Evoked Potentials From The Hard Palate., Robert Floyd Donehoo

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A recording of the electrical activity of the brain in response to various types of stimulation, e.g., electrical, mechanical, optical, acoustical, etc. is called an electric response (ER). The ER is composed of a series of evoked potentials (EPs) which are generated by various structures of the nervous system. ER recording has become a well-established laboratory technique which has found practical applications in clinical diagnosis, e.g., the audiometric testing of individuals who cannot be readily tested by behavioral techniques (Jerger, Hayes, & Jordan, 1980; Weber, 1979). However, the primary application of ERs remains as a research tool. 

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Multiple Electrode Recording Of Cardiac Activation., Aloysius Edward Germann Jan 1982

Multiple Electrode Recording Of Cardiac Activation., Aloysius Edward Germann

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Cardiac activation has been the subject of much research since its first practical clinical recording by Wilhelm Einthoven who in 1903 produced an electrocardiogram using a string galvanometer. This report describes a multiple electrode device which has been used to record the electrical activation of the epicardial surface of the heart during open heart surgery. It consists of flexible circuit materials and represents and improved version of a multiple electrode array already in use for the purpose of recording the activity of multiple epicardial sites simultaneously. Conventional epicardial mapping techniques utilize a handheld electrode probe that is moved over the …

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Biocompatibility Investigations Of Surgical Implant Alloys., Linda Chambers Lucas Jan 1982

Biocompatibility Investigations Of Surgical Implant Alloys., Linda Chambers Lucas

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Three alloys used for surgical applications, 316L stainless steel (Fe-Cr-Ni, ASTMF138), Co-Cr-Mo (ASTM F75) and T1-6A1-4V (ASTM F136) were investigated to determine the elemental constituents released during corrosion and to determine the tissue responses elicited under in vitro and in vivo conditions. In vitro testing involved exposing cell cultures to varying concentrations of synthetic solutions based on the alloy’s chemical composition and independently to solutions of the elements comprising the alloy. In vivo testing involved implanting the alloys in rabbits and injecting synthetic solutions of corrosion products at the implant-to-capsule interface. In vitro exposure of cell cultures to synthetic stainless …

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Uab Magazine - Fall 1981, University Of Alabama At Birmingham Jan 1981

Uab Magazine - Fall 1981, University Of Alabama At Birmingham

UAB Magazine

No abstract provided.

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Uab Magazine - Winter 1981, University Of Alabama At Birmingham Jan 1981

Uab Magazine - Winter 1981, University Of Alabama At Birmingham

UAB Magazine

No abstract provided.

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Uab Magazine - Summer 1981, University Of Alabama At Birmingham Jan 1981

Uab Magazine - Summer 1981, University Of Alabama At Birmingham

UAB Magazine

No abstract provided.

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Variations In The Oxidative Rates Of Nitrosomonas Europaea In Coke-Plant Activated Sludge., Randy Harlis Martin Jan 1981

Variations In The Oxidative Rates Of Nitrosomonas Europaea In Coke-Plant Activated Sludge., Randy Harlis Martin

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The indiscriminate discharge of industrial wastewaters such as those containing high levels of ammonia, has resulted in toxicity to animal and human life and in eutrophication of receiving streams. Stringent government regulations now limit effluent volumes of affected industries. The destructive distillation of coal to produce coke, which is used as a reducing agent for iron and steel production, may result in ammonia levels above 300 mg/L in the wastewater. iron and steel industry has therefore been required to seek an effective and economical method of removing the ammonia from its effluent. The limitations, including high costs of various physiochemical …

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Alteration Of Rat Bone Glycosaminoglycans Due To Growth And Skeletal Fluorosis., Charles William Prince Jan 1981

Alteration Of Rat Bone Glycosaminoglycans Due To Growth And Skeletal Fluorosis., Charles William Prince

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No abstract provided.

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Isolation And Characterization Of Human Colonic Carcinoma Cells With Different Metastatic Abilities., Pamela Marie Kimball Jan 1981

Isolation And Characterization Of Human Colonic Carcinoma Cells With Different Metastatic Abilities., Pamela Marie Kimball

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No abstract provided.

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Macrophage Extracellular Cytolysis Mediated By Target Cell-Bound Immunologic Ligands., Kathryn Denise Ragland Shaw Jan 1981

Macrophage Extracellular Cytolysis Mediated By Target Cell-Bound Immunologic Ligands., Kathryn Denise Ragland Shaw

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No abstract provided.

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Anodic Stripping Voltammetry Of Tellurium (Iv) In 1.0m Nh4, Scn At Rotating Disk Gallium - Thin-Film Electrode., Mojeed Tunde Olayiwola Jan 1981

Anodic Stripping Voltammetry Of Tellurium (Iv) In 1.0m Nh4, Scn At Rotating Disk Gallium - Thin-Film Electrode., Mojeed Tunde Olayiwola

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The electroanalytical technique of anodic stripping voltammetry (ASV), using a gallium-thin film electrode in 1.0M NH4SCN at 60°C has been applied to study the electroanalytical chemistry of Te(IV). Both externally plated and in-situ plated thin-film gallium on rotating glassy carbon disk electrodes are presented. Detection limits of Te(IV) on various monolayer equivalents of gallium plated on a solid glassy carbon electrode are also presented. The sensitivity of this method, which is 1x10-9 TE(IV), is comparable to that of anodic stripping voltammetry using gold-plated electrodes.

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The Economic Impact Of New Health Practitioner Patient Delegation Patterns., Cynthia Mary Freund Jan 1981

The Economic Impact Of New Health Practitioner Patient Delegation Patterns., Cynthia Mary Freund

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No abstract provided.

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Antithyroid Properties Of 2-Selenouracils., James Lewis Thomas Jan 1981

Antithyroid Properties Of 2-Selenouracils., James Lewis Thomas

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No abstract provided.

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Role Expectations For The Hospital-Employed Clinical Nursing Specialist., Kathlyn Anne Gaines Jan 1981

Role Expectations For The Hospital-Employed Clinical Nursing Specialist., Kathlyn Anne Gaines

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No abstract provided.

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A Concurrent And Retrospective Evaluation Of The Effects Of Intrinsic And Extrinsic Motivating Factors On Nurse Performance In Home Health Care Settings., Marcia Kay Stanhope Jan 1981

A Concurrent And Retrospective Evaluation Of The Effects Of Intrinsic And Extrinsic Motivating Factors On Nurse Performance In Home Health Care Settings., Marcia Kay Stanhope

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No abstract provided.

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The Reaction Mechanism Of Gastric (Hydrogen Ion + Potassium Ion) Atpase., Hewiett Bernard Stewart Jan 1981

The Reaction Mechanism Of Gastric (Hydrogen Ion + Potassium Ion) Atpase., Hewiett Bernard Stewart

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No abstract provided.

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Effect Of Gestational And Lactational Zinc Deficiency On The Developing Dental Tissues And Incidence Of Dental Caries In The Rat., Rashid Nouri Al-Hayali Jan 1981

Effect Of Gestational And Lactational Zinc Deficiency On The Developing Dental Tissues And Incidence Of Dental Caries In The Rat., Rashid Nouri Al-Hayali

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No abstract provided.

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An Automated Method For The Determination Of Serum Triacylglycerols., Louis J. Dunka Jan 1981

An Automated Method For The Determination Of Serum Triacylglycerols., Louis J. Dunka

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No abstract provided.

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Immunofluorescent Studies On The Expression Of Vh A And C Kappa B Allotypes By Pre-B Cells And B Lymphocytes Of Homozygous And Heterozygous Rabbits., William Edward Gathings Jan 1981

Immunofluorescent Studies On The Expression Of Vh A And C Kappa B Allotypes By Pre-B Cells And B Lymphocytes Of Homozygous And Heterozygous Rabbits., William Edward Gathings

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No abstract provided.

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Molecular And Cellular Aspects Of Immunoglobulin-A Synthesis And Secretion., William Hanna Kutteh Jan 1981

Molecular And Cellular Aspects Of Immunoglobulin-A Synthesis And Secretion., William Hanna Kutteh

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No abstract provided.

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Non-Uniform Swelling Properties Of The Corneal Stroma., David Yiu-Tung Lee Jan 1981

Non-Uniform Swelling Properties Of The Corneal Stroma., David Yiu-Tung Lee

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No abstract provided.

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A General Synthesis Of Terminal Diaminodideoxyalditols., Juan Luis Navia Jan 1981

A General Synthesis Of Terminal Diaminodideoxyalditols., Juan Luis Navia

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No abstract provided.

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Expression Of A Streptococcus Mutans Glucosyltransferase In Escherichia Coli K-12., James Patrick Robeson Jan 1981

Expression Of A Streptococcus Mutans Glucosyltransferase In Escherichia Coli K-12., James Patrick Robeson

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No abstract provided.

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Effects Of Atmospheric Ammonia On The Pathogenesis Of Murine Respiratory Mycoplasmosis In Rats., Trenton Robert Schoeb Jan 1981

Effects Of Atmospheric Ammonia On The Pathogenesis Of Murine Respiratory Mycoplasmosis In Rats., Trenton Robert Schoeb

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No abstract provided.

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