assigned to the occupational exposure limit value indicates the possibility of significant uptake through the skinMeasured or calculated in relation to a reference period of 8 hours time-weighted average (TWA) Short-term exposure limit (... C Europea - 《La Medicina Del Lavoro》 被引量: 13发表...
Inhalation ExposureDose-Response Relationship, DrugTime FactorsA series of acute inhalation exposures of female rats was conducted with hydrogen fluoride (HF) to establish a concentration-response curve for nonlethal exposures. Durations of 2 and 10 min were used to simulate possible short-term ...
The U.S. Navy physiological heat exposure limit (PHEL) curves and rational models of heat stress also consider time as a job risk factor so that there is a limiting time for exposures above a conventional WBGT exposure limit. The PHEL charts have not been examined for different clothing ...
On the other hand, ReelShort has also been facing scrutiny over the lack of diversity in its series’ casting. In Schiller’s opinion, this “could limit their long-term growth.” Schiller says that over time, ReelShort will need to broaden its content offerings and talent pool to attract ...
The shallow nature of this quiescence implies that ticks could easily become active at any time and re-enter quiescence.KEYWORDS: Distribution, Lyme disease, Southern tick-associated rash illness, ehrlichiosis, tularemia,JayDepartmentA.
Second, the single exposure-phase in this experimental design may have constrained player engagement. In reality, players’ experience and engage with loot boxes over multiple gaming sessions and prolonged time periods18,53. This repeated exposure to the reward mechanisms, and investment of time in ...
We show that a short-term scheduling memory approach can be used to strengthen a time-indexed Lagrangean relaxation of the problem. A branch-and-bound algorithm using this lower bound is presented and computational experiments on problems with up to 100 jobs are reported....
Background. This study tested short-term axial length changes with Lenstar using a simple peripheral plus-add spectacle design. Methods. The subjects for this study were current users of monofocal glasses or contact lenses, aged 18–25 years, with myopic
Now 𝛼0α0 takes the role of an upper limit (larger than 𝜇̂1𝑦μ^1y), from which increasing values (over time) are subtracted to match the T-year prediction 𝜇̂𝑇𝑦μ^Ty. Finally, note that by construction, 𝜎21>𝜎22σ12>σ22 if and only if 𝑇𝜎̂21𝑦...
The timing of the short sale is critical since initiating a short sale at the wrong time can be a recipe for disaster. Because short sales are conducted on margin, if the price goes up instead of down, you can quickly see losses as brokers require the sales to be repurchased at ever ...