In article 2200173 by Cavus Falamaki and co-workers, an in-house nanoparticle-tracking analysis (NTA) system for the determination of particle size distribution (PSD) polydisperse suspensions transparent nanoparticles is developed. This new analytical able to measure SiO2 in water medium a down 5 nm.

A community health survey conducted in 16 villages of three blocks of Union Territory of Pondicherry detected lame children affected by poliomyelitis among other problems identified. The survey was conducted from July 1980 to September 1981. The survey method was house-to-house, covering 97% of the houses in the study area. Prevalence of lameness due to poliomyelitis among children aged from 6 ...

The dengue control programme in Brazil involves house-to-house inspection in each municipality, on a bimonthly basis, for vector control and education activities. The sustainability of this strategy has been questioned due to its failure in interrupting dengue transmission and also by the exhaustion of field workers and lack of active cooperation by populations due to the tedious routine of bim...

Little is known about pesticide exposure among farmworkers, and even less is known about the exposure associated with performing specific farm tasks. Using a random sample of 213 farmworkers in 24 communities and labor camps in eastern Washington State, we examined the association between occupational task and organophosphate (OP) pesticide residues in dust and OP metabolite concentrations in u...

AIMS To determine the frequency of sensitisation to mites among rhinitic laboratory animal workers and to clarify whether sensitisation could be occupational. METHODS Skin prick tests (SPT) were performed in 40 subjects who were working with laboratory animals in Kuopio University research units and who had been referred to Kuopio University Hospital for work related rhinitis. The SPT panel c...

PURPOSE To study the causes of blindness and visual impairment in children in three ecologically diverse regions of Nepal. MATERIALS AND METHODS This is a baseline survey report of a 3-year longitudinal population-based study. One district each from the three ecological regions - Terai, Hills, and Mountains - was selected for the study. Village Development Committees from each district were s...

We document that the wage distribution in larger and more productive cities nearly everywhere first-order stochastically dominates that in less productive cities. This confirms earlier evidence on the city size–wage premium. Yet, because this premium reflects higher house prices, this does not necessarily imply that this stochastic dominance relation also exists in the distribution of skills. W...

OBJECTIVE Sharp injuries constitute important occupational exposure in hospital environment, and perhaps the newly graduated medical and dental students, known as House Officers, in the first twelve months of their practice, are the most vulnerable of all health workers. This study was designed to examine the nature and prevalence of occupational injuries among medical and dental house officers...

As to the long standing debate about whether EMFs can cause cancer, researchers hope this study will add to the already substantial body of evidence. The most extensive study to date, released in late October by the National Resource Council, found no conclusive evidence that EMFs cause cancer. A team of EMF specialists will use a special meter to take spot measurements on electromagnetic field...

Homer Smith (1930) originally outlined the special osmo-regulatory mechanisms of the marine teleosts; he postulated that these animals continually drink sea water, absorb monovalent ions in the gut and simultaneously excrete excess ions, mainly through the gills, in order to maintain a constant blood concentration lower than that of the external sea water. There have been no reported in vitro t...