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Showing 46941 - 46960 of 82803 results
  • A Novel Nonphagocytic Mechanism of Erythrocyte Destruction Involving Direct CellMediated Cytotoxicity
    A Novel Nonphagocytic Mechanism of Erythrocyte Destruction Involving Direct Cell-Mediated Cytotoxicity
    Chandrasekhar B ;
    Saxena RK
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    The number of erythrocytes fell when co-cultured with cell preparations derived from mouse spleen, thymus, bone marrow, or peritoneal exudate (PE) cells. Erythrocyte-depletion activities (EDA) of different leukocyte preparations were in the order PE > spleen > thymus > bone marrow. Adherent, nonadherent, T-depleted, and T-enriched cell subpopulatio ...
    Public Domain
  • Molecular Characterization of a VoltageGated Potassium Channel Expressed in Rat Testis
    Molecular Characterization of a Voltage-Gated Potassium Channel Expressed in Rat Testis
    Benoff S ;
    Cooper GW
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Potassium (K(+)) channels are present in both mammalian testis and spermatozoa. Immunofluorescent detection of sperm-bound biotinylated charybdotoxin, an inhibitor of Ca(2+)-activated and of delayed rectifier K(+) channels, indicated that these ion channels are uniformly distributed over the surface of both heads and tails of unfixed rat epididymal ...
  • Impaired Cutaneous Wound Healing in Interleukin6 Deficient Mice
    Impaired Cutaneous Wound Healing in Interleukin-6 Deficient Mice
    Gallucci RM ;
    Guriel JL
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    It is well known that the inflammatory response following cutaneous wounding is necessary for healing, and it has been postulated that inflammatory cytokines, such as IL-6, might be intimately involved in the healing process. However, studies concerning the exact role of this cytokine during wound healing are unclear. When subject to full thickness ...
    Public Domain
  • Hospital latex allergy programs in Massachusetts
    Hospital latex allergy programs in Massachusetts
    Tumpowsky C
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    In this issue we present the results of two recent surveys conducted by the Occupational Health Surveillance Program (OHSP). Previously, OHSP reported that latex is one of the most commonly reported occupational asthma causing agents among Massachusetts workers. To identify the types of measures used to control latex allergies among health care wor ...
  • Antioxidant Properties of Pyrrolidine Dithiocarbamate and Its Protection Against CrVIInduced DNA Strand Breakage
    Antioxidant Properties of Pyrrolidine Dithiocarbamate and Its Protection Against Cr(VI)-Induced DNA Strand Breakage
    Ding M ;
    Leonard, Stephen S.
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Pyrrolidine dithiocarbamate (PDTC) is considered an antioxidant and is frequently used to study the role of free radical reacions in various biological processes and against free radical-induced cellular injuries. However, its antioxidant properties are not characterized. In this study, electron spin resonance (ESR) was used to investigate the anti ...
    Public Domain
  • Hard Metal Exposures Part 1 Observed Performance of Three Local Exhaust Ventilation Systems
    Hard Metal Exposures. Part 1: Observed Performance of Three Local Exhaust Ventilation Systems
    Booth DW Sr. ;
    Guffey SE
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Not every ventilation system performs as intended; much can be learned when they do not. The purpose of this study was to compare observed initial performance to expected levels for three saw-reconditioning shop ventilation systems and to characterize the changes in performance of the systems over a one-year period. These three local exhaust ventil ...
  • NIOSH Bibliography 1999 A Listing of NIOSH Publications for Calendar Year 1999
    NIOSH Bibliography 1999: A Listing of NIOSH Publications for Calendar Year 1999
    National Institute for Occupational Safety and Health
    2000/04/01 | NIOSH Numbered Publications
    This publication is a compendium of NIOSH publications and reports produced during calendar year 1999. Citations are listed by category including: I. Journal Articles; II. Book Chapters, Proceedings, Abstracts; III. Hazard Evaluation and Technical Assistance Reports; IV. Fatality Assessment and Control Evaluation; V. DHHS NIOSH Numbered Publication ...
    Public Domain
  • Mine Fire Source Discrimination Using Fire Sensors and Neural Network Analysis
    Mine Fire Source Discrimination Using Fire Sensors and Neural Network Analysis
    04/01/2000 | NIOSH
    Report on the application of a neural-network program using mine sensor data to classify the type of fire.
    Public Domain
  • Dermatotoxicokinetic Modeling of PNitrophenol and Its Conjugation Metabolite in Swine Following Topical and Intravenous Administration
    Dermatotoxicokinetic Modeling of P-Nitrophenol and Its Conjugation Metabolite in Swine Following Topical and Intravenous Administration
    Brooks JD ;
    Chang SK
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    The development of a dermatotoxicokinetic (dTK) model for p-nitrophenol (PNP), a common metabolite from a variety of compounds and a biomarker of organophosphate (OP) insecticide exposure, may facilitate the kinetic modeling and risk assessment strategy for its parent compounds. In order to quantify and then clarify in vivo-in vitro correlation of ...
    Public Domain
  • Using Historical Biological Data to Evaluate Status and Trends in the Big Darby Creek Watershed Ohio USA
    Using Historical Biological Data to Evaluate Status and Trends in the Big Darby Creek Watershed (Ohio, USA)
    Cormier SM ;
    Hopkins J
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Assessment of watershed ecological status and trends is challenging for managers who lack randomly or consistently sampled data, or monitoring programs developed from a watershed perspective. This study investigated analytical approaches for assessment of status and trends using data collected by the Ohio Environmental Protection Agency as part of ...
    Public Domain
  • National Childrens Center for Rural and Agricultural Health and Safety 1999 Year in Review
    National Children’s Center for Rural and Agricultural Health and Safety: 1999 Year in Review
    Marshfield Clinic
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    When the National Children's Center for Rural and Agricultural Health and Safety was formally established in October, 1997, we acknowledged the many challenges that face farm safety and health advocates. Our initial strategies were based on a premise that "best practices" would emanate from efforts that link childhood injury prevention research wit ...
  • Caution Women at Work
    Caution: Women at Work
    Jackson Lee L ;
    Rosenstock, Linda
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    The American workplace is rapidly changing as economic conditions, technology, corporate and employment practices, and demographic trends evolve. Jobs in our economy continue to shift from manufacturing to services, with the service sector now employing more than 70% of all workers. Longer hours, compressed workweeks, shift work, reduced job securi ...
    Public Domain
  • Hard Metal Exposures Part 2 Prospective Exposure Assessment
    Hard Metal Exposures. Part 2: Prospective Exposure Assessment
    Atallah R ;
    Camp J
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Hard metal exposures may precipitate lung disease in exposed workers. This article reports on a project investigating the relationship between local exhaust hood air flow levels and workplace hard metal exposures. Airborne cobalt, chromium, and cadmium exposure concentrations, and ventilation system function were monitored for three consecutive day ...
  • Asthma and Nonresidential Indoor Environments
    Asthma and Nonresidential Indoor Environments
    Kreiss, Kathleen
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Many cross-sectional epidemiologic studies document an association of asthma diagnoses or asthma symptoms with aspects of the residential environment, such as dampness or mold. In contrast to residences, nonindustrial work buildings often have large numbers of occupants in whom the epidemiology of asthma can be studied in relation to the built envi ...
    Public Domain
  • Aluminum Increases Levels of BetaAmyloid and Ubiquitin in Neuroblastoma but Not in Glioma Cells
    Aluminum Increases Levels of Beta-Amyloid and Ubiquitin in Neuroblastoma but Not in Glioma Cells
    Bondy SC ;
    Campbell A
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Several epidemiological studies suggest the involvement of aluminum (AI) in the pathogenesis of Alzheimer's disease (AD). There is an increase in the levels of Abeta and ubiquitin in the pathological lesions of AD. Therefore, we have investigated whether aluminum (AI) treatment alters the levels of Abeta and ubiquitin in murine neuroblastoma (NBP2) ...
  • Construction worker crushed between falling dump box and truck frame
    Construction worker crushed between falling dump box and truck frame
    Johnson, Wayne ;
    Rautiainen, Risto
    2000/04/01 | Fatality Assessment and Control Evaluation Reports (FACE)
    During the fall of 1999, a 53-year-old construction worker was killed after he unloaded sand from a dump truck. He partially raised the box of his truck to dump out a portion of wet sand at a work location, then leaned under the box to manually trip the hydraulic linkage to bring the box down. The hydraulic linkage was located at the hydraulic pump ...
  • Determination of Physical Properties of Cable Bolts in Cement Grout Pull Tests Using Instrumented King Wires
    Determination of Physical Properties of Cable Bolts in Cement Grout Pull Tests Using Instrumented King Wires
    04/01/2000 | NIOSH
    Researchers are investigating the physical properties of cable bolts by replacing the conventional king wire with a modified king wire on which strain gauges have been installed.
    Public Domain
  • The Effect of Alginate on the Invasion of Cystic Fibrosis Respiratory Epithelial Cells by Clinical Isolates of Pseudomonas aeruginosa
    The Effect of Alginate on the Invasion of Cystic Fibrosis Respiratory Epithelial Cells by Clinical Isolates of Pseudomonas aeruginosa
    Aronoff SC ;
    Gallagher S
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Chronic infection in the cystic fibrosis (CF) lung is characterized by Pseudomonas aeruginosa strains that overproduce the mucoid exopolysaccharide, alginate. Previous experiments have shown that long-term survival of P. aeruginosa in the CF lung may be facilitated by increased adherence and decreased invasion of respiratory epithelial cells. There ...
    Public Domain
  • Predicting Glass Furnace Output Using Statistical and Neural Computing Methods
    Predicting Glass Furnace Output Using Statistical and Neural Computing Methods
    Bidanda B ;
    Carnahan BJ
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    This paper describes the development of predictive models for glass production at a regional manufacturing company. The objectives of the models are to predict the actual batch tonnage produced per week from the glass furnace based on the planned production schedule. Four modelling methods were explored: (i) linear regression; (ii) nonlinear regres ...
  • Dermal Absorption and Tissue Disposition of 33 44Tetrachlorobiphenyl TCB in an ExVivo Pig Model Assessing the Impact of Dermal Exposure Variables
    Dermal Absorption and Tissue Disposition of 3,3′, 4,4′-Tetrachlorobiphenyl (TCB) in an Ex-Vivo Pig Model: Assessing the Impact of Dermal Exposure Variables
    Qiao GL ;
    Riviere JE
    2000/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    TCB is one of the dioxin-like polychlorinated biphenyls (PCBs). This research was designed to help assess the risk of occupational and environmental TCB exposure. To evaluate exposure variables' effects on dermal absorption and cutaneous disposition, 14C-TCB (40 microg/cm(2)) in acetone, methylene chloride, a water-acetone mixture, and a soil-based ...
    Public Domain
46941 - 46960 / 82803