Exposure Level Articles & Analysis
18 articles found
Koning Breast Computed Tomography (KBCT) produces high-contrast real 3D images of the breast with exceptional spatial resolution, no painful compression, in a rapid 10-second exposure, and at radiation levels in the range of diagnostic mammograms. ...
In previous blog posts, we have explored the fact that many drugs, vaccines and pharmaceutical products require refrigerated conditions in order to maintain efficacy. We also examined the importance of minimizing temperature excursions during transportation. Establishing a drug stability budget can minimize discards and ensure a quality product is delivered to the end-user. We know that ...
ByAKCP
Control of Anesthetic Gases Supply and scavenging systems, as well as general ventilation in Operating Rooms and Surgical Suites, must be functioning optimally for the surgical staff to be protected from exposure to anesthetic gases. OSHA has established guidelines for the protection of operating room personnel but does not have Permissible Exposure Limits ...
The CDC posed a question. Could high levels of volatile mycotoxins produced by molds be responsible for the infant’s death? ...
In September 2007, OSHA issued a warning of the possible dangers to workers in such locations where diacetyl (also called butanedione or 2,3 – butanedione Cas#431-03-8) is processed and urged employers who use diacetyl to include it in their Hazard Communication Programs and limit workers exposure as much as possible. On January 21, 2009, OSHA proposed a rule governing ...
The aim of our study was to develop an integrated approach to detect and study clusters of AGI in geographical areas with homogeneous exposure to drinking water. Data for the number of AGI cases are available at the municipality level while exposure to tap water depends on drinking water networks (DWN). ...
This was accomplished by evaluating the impacts of BDE‐47 exposures across multiple levels of biological organization. Breeding pairs were exposed to BDE‐47 via diet for 21 days during which reproductive success was monitored. At the conclusion of the exposure, fish were sacrificed to assess the effects of BDE‐47 on sex steroid‐ and ...
We examined the impact of an ultra‐low volume (ULV) formulation of the organophosphorus insecticide, fenitrothion (O,O‐dimethyl‐O‐(3‐methyl‐4‐nitrophenol)‐phosphorothioate), on a suite of physiological measures that affect the ability of animals to survive in free‐living conditions; namely, locomotory and thermogenic functions, metabolic performance, body mass, haematocrit and haemoglobin ...
This study assessed the effects of maternal copper or cadmium exposure in a live‐bearing fish. After a 10‐day exposure to background levels (control) or 0.15 µM copper or cadmium, we transferred gravid females to clean water. ...
In the present study, 4‐month‐old zebrafish (Danio rerio) were exposed to 1 of 4 concentrations of PCP (0.1, 1, 9, and 27 µg/L) for 70 d. The effects of PCP exposure on plasma thyroid hormone levels, and the expression levels of selected genes, were measured in the brain and liver. ...
Other measures aim to reduce the population’s exposure to unhealthy levels of pollutants by limiting high concentrations — the amount of a certain pollutant in the air at a given location at a given ...
The results indicate that sublethal, subchronic exposure to chlorpyrifos can affect P. bocagei in a dose‐dependent manner. Adverse effects occurred at both the subindividual and individual levels, including inhibition of carboxylesterases and ChEs, liver histopathological changes, and altered predatory behaviors. ...
Whole‐body Cu, whole‐body Na, liver lipid peroxidation (LPO), liver catalase activity, and liver glucose levels were determined before and after Cu exposure. Prior to Cu exposure, the acclimation groups differed only for liver glucose levels, which were higher in the 2.5 ppt acclimated fish than in the others. These same 2.5 ppt ...
A computational tool was developed with the aim of evaluating radiation exposure levels corresponding to patients and other exposed people, such as medical staff or chaperones, during typical nuclear medicine procedures. ...
In September 2007, OSHA issued a warning of the possible dangers to workers in such locations where diacetyl (also called butanedione or 2,3 – butanedione Cas#431-03-8) is processed and urged employers who use diacetyl to include it in their Hazard Communication Programs and limit workers exposure as much as possible. On January 21, 2009, OSHA proposed a rule governing ...
But, how do you know how much folic acid each demographic group of the population will be exposed to from their diverse eating habits when the new fortification recommendation comes into force? And are those levels effective and safe? CREMe specialises in these questions and in solving these problems for our clients. We perform detailed exposure ...
Based on the reports suggesting that exposures to low doses of ionising radiation may impede tumour development and/or trigger the activity of natural anti-neoplastic defence mechanisms we demonstrate in the present study that single whole-body irradiations of mice with 0.1 or 0.2 Gy X-rays significantly decreased the number of the induced tumour colonies in the lungs and that ...
Previous studies have shown that the principal route to exposure of the general human population is through ingestion of food which carries trace levels of dioxins. In view of this, experts have derived acceptable or tolerable daily intakes (TDIs), designed to ensure that the human population is not exposed to levels of dioxin that could give ...