High-efficiency particulate air (HEPA) filtered vacuum cleaners are recommended by the U.S. Department of Housing and Urban Development for cleaning lead-contaminated house dust. We performed a randomized field study to determine whether a conventional (non-HEPA) vacuum cleaner could achieve cleaning results comparable with those of a HEPA vacuum cleaner. We compared the lead loading reductions...

handmade carpets have been used from ancient times for floor covering. most of the researchers around the world have a common idea about the roots and origins of carpet making which belong to persia. although rugs and carpets were introduced to the world such as floor covering but since it was expensive, it had been used such as a hanging picture or cloth tables especially for american people. ...

OBJECTIVE Isolation of potentially pathogenic bacteria from carpets in hospitals has been reported earlier, but not from carpets in mosques. The aim of the present study is to determine the pathogenic and potentially pathogenic bacteria that may exist on the carpets of mosques in Tripoli, Libya. METHODS Dust samples from carpets were collected from 57 mosques in Tripoli. Samples were examined...

BACKGROUND Several chemical treatments have been recommended for reducing mite and other allergen levels in carpets, including the protein-denaturing agent tannic acid (TA). OBJECTIVE We evaluated the efficacy of TA and other treatments on mite and cat allergens in carpets within houses. The effects of TA were assessed on Der p 1 and Der f 1, on group II mite allergens, and on the major cat a...

Several earlier studies have shown the presence of more dust and allergens in carpets compared with non-carpeted floors. At the same time, adverse effects of carpeted floors on perceived indoor air quality as well as worsening of symptoms in individuals with asthma and allergies were reported. Avoiding extensive carpet use in offices, schools, kindergartens and bedrooms has therefore been recom...

BACKGROUND Owing to increased complexity in the evolution of society, stress has become an important public health problem, and is responsible for more than 30 types of diseases. Most of the research on stress conducted to date has focused on physical and psychological aspects; however, there are very few reports about the association between psychological stress and elements within the residen...

1 June 1, 1998 Introduction It has long been known that modular arithmetic often produces interesting numerical patterns. These patterns can be made easier to comprehend and more interesting by rendering them as images with colors associated with numerical values. The example most often cited is Pascal’s Triangle, which exhibits the binomial coefficients. If you take the coefficients modulo m f...

The carpet industry is one of the most rapidly growing traditional industries in India. This is a handicraft and cottage industry that provides jobs right at doorstep of more than 100,000 workers, belonging to economically backward class of society. In the global carpet scenerio, the market share of Indian carpets is expanding rapidly. Jaipur and its adjacent districts are the major manufacturi...