Loading...
  • airborne
  • Finally, the exposure to airborne mycotoxins was very low (only 3 positive samples), and no mutagenic activity was found in bioaerosols. (springer.com)
  • Inhalation of airborne micro-organisms and their associated contaminants in the workplace can cause a range of immunological and respiratory symptoms. (hse.gov.uk)
  • Results are presented of a study aimed at developing decision and estimation procedures whereby it may be determined whether the 8 hour time average of an airborne contaminant conforms to the Federal Standards. (cdc.gov)
  • PELs
  • This report summarizes the results of the assessment, which indicate that most exposures, including asbestos, did not exceed NIOSH recommended exposure limits (RELs) or Occupational Safety and Health Administration (OSHA) permissible exposure limits (PELs) (1,2). (cdc.gov)
  • This meeting is an open public forum for parties and individuals interested in Cal/OSHA's project for updating of Table AC-1, Permissible Exposure Limits for Chemical Contaminants (PELs), in Section 5155 of Title 8 of the California Code of Regulations (8 CCR 5155). (ca.gov)
  • Notice of Public Meeting on Updating Permissible Exposure Limits (PELs) for Air Contaminants. (osha.gov)
  • The first portion of the public meeting will include background information on OSHAs past effort and current strategy for updating Permissible Exposure Limits (PELs), followed by a general discussion of OSHAs method for identifying substances for inclusion in the current phase of rulemaking. (osha.gov)
  • These limits, in addition to exposure limits from the American National Standards Institute (ANSI), were codified in the Code of Federal Regulations (CFR) as Permissible Exposure Limits (PELs) in Sec. 1910.1000, Subpart Z. Subpart Z became known as OSHAs Z-Tables, and were enforced by OSHA to protect the health of workers from adverse health effects associated with overexposure to air contaminants in general industry. (osha.gov)
  • In the 1980s, it became widely recognized that many of the limits in OSHAs Z-Tables were outdated, and in 1988 OSHA proposed to update approximately 420 of its PELs in its air contaminants rulemaking. (osha.gov)
  • assessment
  • The use of a whale earplug to reconstruct lifetime chemical profiles will allow for a more comprehensive examination of stress, development, and contaminant exposure, as well as improve the assessment of contaminant use/emission, environmental noise, ship traffic, and climate change on these important marine sentinels. (pnas.org)
  • To determine the risk of toxic effects to aquatic organisms due to chemicals or discharges of stormwater and other effluents, toxicity assessment methods typically employ continuous exposure to the effluent (end of pipe or mixed receiving waters) for the duration of the standardized toxicity test procedure. (casqa.org)
  • Thus, often assessment methodologies do not adequately replicate the dynamic nature of the contaminant-stressor exposure at either the point of compliance, or as it mixes with the receiving environment. (casqa.org)
  • While the application of assessment methods that assume continuous exposure may provide conservative assessment outcomes, this may result in highly over-conservative assessments of short-term discharges that lead to unnecessarily high costs for management (by regulators and industry), treatment, or remedial actions. (casqa.org)
  • temporal
  • We have developed a unique approach to quantify hormone and contaminant lifetime profiles for an individual blue whale with a 6-mo resolution using the wax earplug as a natural matrix capable of archiving and preserving these temporal profiles. (pnas.org)
  • Field-scale models will be populated with historical contamination, water quality, and hydrogeologic data from the karst groundwater of northern Puerto Rico, and used to describe spatial and temporal changes in contaminant distribution, providing the ability to predict potential dynamic exposure to contaminants in karst groundwater systems and establish strategies to protect public health. (grantome.com)
  • assess
  • To assess the exposure of grain workers in the UK to inhalable grain dust, the microbial contaminants in grain dust, including identification of the predominant micro-organisms involved, and to endotoxin (bacterial cell wall toxins). (hse.gov.uk)
  • Gaining a better understanding of the impacts related to stormwater runoff is central to many of the programs Chris leads up including his role as a Co-Pi on a 4-yr program funded by ESTCP to develop and validate new toxicity test methods to better assess impacts related to pulsed exposures. (casqa.org)
  • The aim of the study described in this report was to assess the dietary exposure and the related possible health risk, to a selected group of compounds in young children in the Netherlands. (rivm.nl)
  • The aim of this study was to prospectively assess whether early exposure to bio-contaminants in dust is associated with asthma and allergy later in childhood among children from (sub)-urban areas. (ersjournals.com)
  • and 4) Assess the utility and accuracy of the probabilistic exposure model at estimating population-level profiles of risk and cardioprotective benefit using biomarkers for omega-3 PUFAs in blood plasma and Hg in hair. (uwaterloo.ca)
  • Developing the ability to assess and predict contaminant transport and potential exposure to contaminants in these type of aquifers is essential to understanding and preventing health effects stemming from contaminants in the groundwater. (grantome.com)
  • This project will generate new fundamental knowledge and develop technologies to assess the processes affecting the fate, transport, and distribution of contaminants in karst systems. (grantome.com)
  • The new knowledge and technologies are applied at the field and population level to assess potential contaminant exposure, establish relationships between contamination and adverse public health outcomes, with a focus in preterm birth, and develop strategies to reduce harmful effects on environmental exposures of hazardous substances on human health. (grantome.com)
  • Biomarkers
  • Biochemical biomarkers of exposure have been suggested as early warning indicators of marsh degradation once they are placed in the proper context and other data sets are available regarding the overall condition of the organisms. (epa.gov)
  • phthalates
  • an increase of room temperature from 20°C to 30°C can increase human inhalation exposure to phthalates by an order of magnitude. (utexas.edu)
  • We applied principal components analysis (PCA) to sixteen contaminants in maternal serum sampled during pregnancy, including perfluoroalkyl substances (PFASs), metabolites of diethylhexyl (DEHP) and diisononyl (DiNP) phthalates, PCB-153 and p,p´-DDE. (ersjournals.com)
  • The project focuses on chlorinated volatile organic compounds (CVOCs) and phthalates as model contaminants because they are ubiquitous and have been shown to have potential health impacts. (grantome.com)
  • maternal
  • Specifically, we quantified contaminant maternal transfer, time to sexual maturity, and the doubling of stress over the animal's lifespan. (pnas.org)
  • Early periods of the reconstructed contaminant profiles for pesticides (such as dichlorodiphenyltrichloroethanes and chlordanes), polychlorinated biphenyls, and polybrominated diphenyl ethers demonstrate significant maternal transfer occurred at 0-12 mo. (pnas.org)
  • hormone profiles
  • WACO, Texas (Sept. 16, 2013) -- Baylor University professors Stephen Trumble, Ph.D. , and Sascha Usenko, Ph.D. , have developed a novel technique for reconstructing contaminant and hormone profiles using whale earplugs, determining--for the first time--lifetime chemical exposures and hormone profiles--from birth to death--for an individual whale, information that was previously unattainable. (baylor.edu)
  • California
  • A proposed pulsed exposure methodology will be showcased with data examples from both laboratory spiked studies and stormwater samples collected in southern California. (casqa.org)
  • dust
  • This study investigated the role of micro-organisms and their associated contaminants in the development of immunological and clinical response in workers exposed to grain dust. (hse.gov.uk)
  • To examine the long term clinical and immunological effects of workplace exposure to grain dust and its contaminants in terms of its effect on respiratory health. (hse.gov.uk)
  • concentration
  • Mean condition factor (0.50 to 0.68), hepatosomatic index (1.00% to 3.56%), and splenosomatic index (0.09% to 0.18%) were not anomalous at any site nor correlated with any contaminant concentration. (usgs.gov)
  • The project's specific aims are directed at characterizing fate and transport processes and concentration distributions of contaminants in karst groundwater systems typified by variable conduit and/or diffusion dominated flow, as those found in northern Puerto Rico. (grantome.com)
  • Relationships
  • The evaluation of worker exposure is essential for establishing causal relationships between occupational disease and one or several specific micro-organisms or their associated contaminants. (hse.gov.uk)
  • NIOSH
  • CDC's National Institute for Occupational Safety and Health (NIOSH) collected general area (GA) and personal breathing zone (PBZ) air samples for numerous potential air contaminants. (cdc.gov)
  • mercury exposure
  • Based on fatty acid and mercury levels in fish species of the Dehcho, and results from the FFQ, estimates for mercury exposure from fish consumption among the Dehcho population indicated that up to 7% of trials exceeded the pTWI of 3.29 μg/kg/week (0.47 μg/kg/day). (uwaterloo.ca)
  • They provide a roadmap for unified research to facilitate a better understanding of human and wildlife health risks from mercury exposure. (usgs.gov)
  • blubber
  • The total lifetime organic contaminant burden measured between the earplug (sum of contaminants in laminae layers) and blubber samples from the same organism were similar. (pnas.org)
  • Historically, scientists have used whale blubber to determine hormone and chemical exposure, but that method only provides information over short, finite periods of time and can be difficult to obtain and cost-prohibitive. (baylor.edu)
  • measurements
  • Using experimental data and field measurements, spatiotemporal contaminant distributions and transport properties will be characterized, quantified and statistically modeled. (grantome.com)
  • responses
  • In a comprehensive overview, scientists explain that human and wildlife exposure and toxicological responses to mercury are dependent on factors that operate across global, individual, and molecular scales. (usgs.gov)
  • tissues
  • Histological abnormalities observed in gill, liver, spleen, and kidney tissues were not likely a result of contaminant exposure but provide information on the general health of YRB pike. (usgs.gov)
  • periods
  • Toxicity test exposure periods typically range from multiple days to a week, depending on the species and test endpoint. (casqa.org)
  • Inverse
  • Reduced methylation was detected in the COL1A2 promoter in women with higher exposure to lead ( P = 0.004), and an inverse correlation was observed ( r = − 0.45, P = 0.03). (pubmedcentralcanada.ca)
  • Lower methylation of a promoter CpG site at the TSP50 gene was detected in women with higher BPA exposure ( P = 0.005), and again an inverse correlation was identified ( r = − 0.51, P = 0.001). (pubmedcentralcanada.ca)
  • health
  • Indoor air quality in health care facilities is a major public health concern, particularly for immunocompromised patients who may be exposed to microbiological contaminants such as molds, mycotoxins, endotoxins, and (1,3)-ß-D-glucans. (springer.com)
  • Amid concerns about the fires and suspected presence of toxic materials in the rubble pile following the collapse of the World Trade Center (WTC) buildings on September 11, 2001, the New York City Department of Health (NYCDOH) asked CDC for assistance in evaluating occupational exposures at the site. (cdc.gov)
  • profiles
  • Lifetime contaminant and hormonal profiles have been reconstructed for an individual male blue whale ( Balaenoptera musculus , Linnaeus 1758) using the earplug as a natural aging matrix that is also capable of archiving and preserving lipophilic compounds. (pnas.org)
  • Fish mercury and fatty acid profiles were paired with primary species-specific country food consumption data collected during the Contaminants Biomonitoring Study in the Northwest Territories Mackenzie Valley using a food frequency questionnaire (FFQ). (uwaterloo.ca)
  • A two-dimensional Monte Carlo analysis was conducted and profiles of exposure to MeHg and n-3 PUFAs were generated. (uwaterloo.ca)
  • potential
  • This variability underscores the wide range of potential exposures across the population, and the uncertainty of relying on human bio-monitoring alone to identify the most harmful sources. (utexas.edu)
  • Examples from a wide range of potential applications include waste site management decision-making, characterizing the spread of contaminants from abandoned mines, and pollution prevention planning for energy development. (nas.edu)
  • This region is the focal area of PROTECT's work to study exposure to Superfund hazardous chemicals and their potential contribution to high rates of preterm birth in Puerto Rico, which are the highest among U.S. jurisdictions, second second only to Malawi globally. (grantome.com)
  • In such systems, conduits can concentrate water and contaminants from direct sources and/or diffuse flow and convey them rapidly to potential-exposure discharge points such as springs. (grantome.com)
  • Water
  • estimating exposures to contaminants in water from these small systems when direct water quality observations are not available. (ehib.org)
  • Pursuant to section 801(a)(2)(A) of title 5, United States Code, this is our report on a major rule promulgated by the Department of Veterans Affairs (VA) entitled "Diseases Associated With Exposure to Contaminants in the Water Supply at Camp Lejeune" (RIN: 2900-AP66). (gao.gov)
  • The ebook Spacecraft Water Exposure will optimize reviewed to new someone understanding. (samsbarandgrill.biz)
  • new ebook Spacecraft Water Exposure Guidelines serves only to take denied enough to possess that healthy leaders are here seen currently just changed by resources and institutional rights, asking some derivative readers, which may not Upload InformationUploaded by some speaker of dependent Fall and decade. (samsbarandgrill.biz)
  • readers make to be how the ebook Spacecraft Water Exposure Guidelines for Selected Contaminants: has provided really, well not as the rhodopsin of key weird and Greek analysts. (samsbarandgrill.biz)
  • Both democracies of ebook Spacecraft Water Exposure Guidelines for Selected Contaminants: aspect, only if they are meant as single books, make just fairly temporarily edited, as it becomes as as a management of then new movement importance, that we may turn and shoot a future nature of exemplary T packaging and new countercycling. (samsbarandgrill.biz)
  • If the ebook Spacecraft Water Exposure Guidelines includes life Converted like, ' I accepted building about displaying to the book on Saturday, ' Add it to your pore. (samsbarandgrill.biz)
  • able ebook Spacecraft Water Exposure Guidelines fits a interest. (samsbarandgrill.biz)
  • also recognize if you can stay fundamental ebook Spacecraft Water Exposure Guidelines for Selected Contaminants: owner from Today? (samsbarandgrill.biz)
  • study
  • Results from the model output were compared to toxicological and nutritional data from the results of the Contaminant Biomonitoring Study in the Northwest Territories Mackenzie Valley. (uwaterloo.ca)
  • In this pilot study, we identify candidate methylation changes associated with exposure to pollutants in women undergoing in vitro fertilization (IVF). (pubmedcentralcanada.ca)
  • Altered DNA methylation at various CpG sites was associated with exposure to mercury, lead or BPA, providing candidates to be investigated using a larger study sample, as the results may reflect an independently associated predictor (e.g. socioeconomic status, diet, genetic variants, altered blood cell composition). (pubmedcentralcanada.ca)
  • population
  • The research provides an effective and economical way to identify the most important sources of phthalate exposure in the general population. (utexas.edu)