proposing a noise standards should be considered seriously by the governmental authorities because of the prevalence of hazardous noise exposure and the seriousness of the effects . in a survey founded by world health organization’s regional office in iran, the existing as well as gathered data from field were applied to propose a national occupational noise exposure limit. the collected data p...

This study examined the contribution of noise exposures from personal media player (PMP) use in the workplace to overall employee noise exposures at a Colorado manufacturing facility. A total of 24 workers' PMP and background noise exposures were measured. Twelve PMP users worked in high-background-noise exposure (HBNE) areas, and 12 worked in low-background-noise exposure (LBNE) areas. The sel...

PON(Passive Optical Network) is the most promising technology applicable to TPS(Triple Play Service). To improve network efficiency, MAC(Multiple Access Control) is the most important technology in the PON. This study develop BR(Borrow-Refund)-DBA for improve network efficiency and prompt process. For performance evaluation, simulated about throughput, fairness and queue delay in SR-DBA and NSR...

Diamond Blackfan anemia (DBA; OMIM105650) is a rare congenital anemia with erythroid (Ery) hypoplasia, developmental abnormalities, growth retardation, and an increased risk of malignancy. About half of DBA cases are caused by heterozygous mutations in genes encoding ribosomal proteins, leading to haploinsufficiency or, less frequently, dominant-negative effects with consequent defects in ribos...

The skin of Swiss albino mice was exposed once to 0.16 #g. of 9,10-dimethyl-l ,~benzanthracene (DMBA) or 1,2,5,6-dibenzanthracene (DBA), followed by continuous t rea tment with croton oil. Other mice were exposed to 0.0~ ug. of the same carcinogens. Control mice were t reated once with acetone followed by continuous t r ea tmen t with croton oil. A higher incidence of skin tumors was observed f...

PURPOSE To test the hypothesis that acute topical dorzolamide (DZ) decreases intraocular pressure (IOP) and increases retinal and choroidal blood flow in the DBA/2J mouse model of glaucoma. METHODS Retinal and choroidal blood flow were measured in 4- and 9-month-old DBA/2J mice, and 4-month C57BL/6 (control) mice under isoflurane anesthesia using magnetic resonance imaging. Ocular blood flow ...

Diamond Blackfan Anemia (DBA) is a rare, congenital erythrocyte aplasia that is usually caused by haploinsufficiency of ribosomal proteins due to diverse mutations in one of several ribosomal genes. A striking feature of this disease is that a range of different mutations in ribosomal proteins results in similar disease phenotypes primarily characterized by erythrocyte abnormalities and macrocy...

The skin of Swiss albino mice was exposed once to 0.16 #g. of 9,10-dimethyl-l ,~benzanthracene (DMBA) or 1,2,5,6-dibenzanthracene (DBA), followed by continuous t rea tment with croton oil. Other mice were exposed to 0.0~ ug. of the same carcinogens. Control mice were t reated once with acetone followed by continuous t r ea tmen t with croton oil. A higher incidence of skin tumors was observed f...

The injection of antigen into the anterior chamber (AC) induces the production of antigen-specific splenic CD8+ regulatory T cells (Tregs) /suppressor T cells that perform the local suppression of delayed-type hypersensitivity (DTH) responses. Because CD94/NKG2A-Qa-1-dependent interactions have been implicated in CD8+ Treg-mediated immune suppression and DBA/2J mice are deficient in CD94/NKG2R,...