background and objectives: day-shift taxi drivers have a long duration of direct sun exposure. however, the efficiency of this occupational exposure in vitamin d synthesis has not been addressed yet. the aim of this study was to assess the vitamin d status of taxi drivers in tehran, and examine vitamin d status association with some anthropometric and circulating biomarkers. materials and metho...

background: adverse effect of sun rays mainly uv ray on the human eye documented and protection of eyes is necessary using different methods such as, sun glasses. sunglasses are designed in different colors. the aim of this study was evaluation of the effect of different colors of sunglasses on the visual acuity, contrast sensitivity, stereopsis and color vision. methods: 81 normal subjects wer...

Using a mobile photothermal probe we show that it is possible to detect rapidly different type of cracks (emerging ones or not), their width being a few micrometers and their depth being some hundredths of micrometers.

Dill (Anethum graveolens L.) and parsley (Petroselinum crispum Mill.) were dried by using sun and oven (50oC) drying methods. Oven drying decreased the drying time approximately 50% when compared to the sun drying method for both herbs. K, Ca, P, Mg and Na were the most abundant elements in dill and parsley samples. Oven-dried samples had higher mineral values than that of the su...

I would like to begin by thanking Ron Chrisley for his interesting and detailed commentary.1 There is much I find to agree with; indeed, it seems to me that his essay can largely be read, not as a criticism of the perspective offered in my own article,2 but rather as a useful and largely complementary alternate view. I am especially grateful for the insights expressed in the last section of the...

amonhotep iv, one of egypt's most famous pharaohs, has been composer of hymns in praise of the sun or sun god, which remains in inscriptions from fourteenth century bc. amonhoteb stone inscription is the oldest document in which, at the first time, he has invited people to monotheism. mehr yasht is second long yasht, in praise of sun, mehr or sun god, remains from one thousand years bc. th...

backgrounds: vitamin d deficiency is a public health concern even in sunny areas, so we decided to assess the prevalence of vitamin d deficiency and its related factors among university students in shiraz. methods: this cross‑sectional study was carried out on 254 (128 male and 126 female) university students. demographic questionnaires and a questionnaire on exposure to sun light and sun prote...