occupational exposure to blood and body fluids is an important hazard for health care workers, which places them at a high risk for blood-borne infections including hepatitis b virus, hepatitis c virus and human immunodeficiency virus and results in psychological and emotional stresses. several preventive measures have been proposed including pre-exposure ( e.g. , education, use of standard pre...

silicon dioxide or silica is the earth’s most abundant mineral. the primary pulmonary illness attributable to silica exposure is silicosis, which is observed in three forms: classic, accelerated and acute. a case of silicosis is presented in this article who has been working in a stone-cutting plant. he had suffered from symptoms of silicosis one year after employment in this plant (acute form)...

A total of 351 Iberian pigs with equal numbers of both sexes from 2 commercial farms were used to study the ability of various identification devices to guarantee the traceability required for labeled meat products from Iberian pigs reared under extensive production conditions in Spain. The performance of tattoos, visual ear tags, electronic ear tags, and i.p.-injected transponders of half dupl...

The inner ear in rats is ectodermally derived. It appears as a placode on day 8 of a 22-day gestational period. In the developing inner ear most of the cells undergo terminal mitosis between gestational days 13 and 15. During this critical period of development exposure to toxic substances may result in malformations of the adult inner ear. To test this hypothesis, rat fetuses were exposed to 5...

A key component for of any personal protective ensemble for demining is the helmet and/or face shield. For obvious reasons, protecting the face of a deminer is of utmost importance in the case of an accidental detonation of a mine. Currently, there is a wide range of different head and face protective devices available for the deminer, and this study attempts to perform a first evaluation of th...

Abstract The human earcanal can accommodate several types of in-ear devices including hearing aids, earphones, protectors, and earplugs. This canal-type home has a neighbor called the temporomandibular joint (TMJ) whose movements slightly deform shape earcanal. While these cyclic deformations influence positioning, comfort, functioning ear-fitted devices, they also provide significant amount en...

Micro-electromechanical system (MEMS) devices are small compared to normal mechanical devices, but they are still large compared to the wavelength of visible light. Thus, simple low-cost optical measurement techniques can be adapted for precise characterization of the motions of these small objects. The results of such measurements are important for veriication of simulations, especially for de...