Sunlight exposure

Merkel cell carcinoma (MCC) is a highly aggressive neuroendocrine carcinoma of the skin caused by either the integration of Merkel cell polyomavirus (MCPyV) and expression of viral T antigens or by ultravioletinduced damage to the tumor genome from excessive sunlight exposure.

22p vibransone 28-03-2024 6 2   Download

Solar maculopathy is a well-described clinical entity that usually occurs in patients that have gazed directly the sun. In this report we describe the first two cases of solar maculopathy in individuals exposed to sunlight reflected from the screen of mobile devices in the absence of direct sun gaze.

5p vigamora 23-05-2023 4 2   Download

There is growing interest in rock surface burial and exposure luminescence dating for use in Quaternary science and in archaeology. Such methods have enormous potential both in increasing the range of sedimentary contexts that can be dated, and improving the accuracy and the precision of dating within those contexts.

7p vironald 15-12-2022 16 3   Download

Using luminescence to date the burial and exposure ages of rock surfaces has been a revolutionary new geochronological approach developed and refined over the past decade. Rock surface exposure dating is based on the principle that the depth to which the luminescence signal is bleached into a rock surface is dependent on the duration of that rock surface’s exposure to sunlight.

10p vironald 15-12-2022 10 3   Download

Considering that exposure to sunlight in childhood and adolescence has an important role in skin cancer, so it seems that training protective behaviors in this period is more effective. Objectives: To survey the application of protection motivation theory (PMT) on skin cancer preventive behaviors among students in rural areas of Fasa city, Iran.

10p vielonmusk 21-01-2022 10 0   Download

It is generally believed that Thai people do not suffer from hypovitaminosis D because there is abundant sunlight throughout the year, and that taking vitamin D supplements could result in abnormally high levels of vitamin D. This is a Thai FDA-driven study to investigate this risk over a period of 26 weeks of taking alendronate sodium/vitamin D3 combination tablets.

9p vitennessee2711 01-02-2021 7 2   Download

Vemurafenib, a selective inhibitor of genetically activated BRAF, is registered for unresectable stage III and stage IV melanomas harboring a BRAF mutation. Photosensitivity related to exposure to sunlight is a common side-effect. We here present three cases of indoor-photosensitivity due to fluorescent lamps, whilst undergoing treatment with vemurafenib.

4p vialabama2711 21-09-2020 4 0   Download

Bovine ocular squamous cell carcinoma also called cancer eye, represents the most economically important neoplasm in large animals. Hereditary factors, environmental factors (e.g. latitude, altitude, exposure to sunlight), lack of eyelid pigmentation, age and dietary habits have all been reported to play a role in the etiopathogenesis of bovine ocular squamous cell carcinoma. Twenty four animals were subjected to surgical excision and autogenous vaccine was administered weekly once for four weeks. All the animals recovered completely with no recurrence for a follow up period of one year.

4p caygaocaolon6 30-07-2020 14 2   Download

Effect of sunlight and UV light on the inactivation of nuclear polyhedrosis virus to Diaphania pulverulentalis (Hampson). Larvae were studied under laboratory conditions. The larval mortality was significantly maximum (76.66%) and (86.65%) when DpNPV suspension and formulation was exposed to sunlight for 1 hour respectively. Minimum mortality of (48.33%) and (61.66%) of DpNPV suspension and formulation were observed when it was exposed to sunlight for 5 hours which indicating reverse relationship between the exposure duration to sunlight and larval mortality.

9p kethamoi6 29-06-2020 11 1   Download

Basal leaf removal is widely practiced to increase grape cluster sunlight exposure that controls berry rot and improves quality. Studies on its influence on volatile compounds in grape berries have been performed mostly in Mediterranean or marine climate regions.

18p viharuno2711 21-04-2020 9 2   Download

Sowing of seeds with seed drill at proper seed rate, depth and covering them with soil is very important. This allows plants to get sufficient sunlight and nutrients from the soil and also saves them from being eaten by birds or being dried up due to exposure to sun. Meanwhile it ensures improved ratio of crop yield with saving in time and labour. Small land holding in Indian farms limits farm mechanization on Indian farms. Conventional methods of seeding will results in low seed placements, less area covered per unit time, physical health issue like back ache etc.

6p trinhthamhodang4 22-03-2020 12 2   Download

In many resource-limited settings, the availability of effective phototherapy for jaundiced infants is frequently hampered by lack of, or inadequate resources to acquire and maintain conventional electric-poweredphototherapy devices.

8p vichengshin2711 29-02-2020 5 0   Download

Now a day’s nanotechnology has become one of the most promising approaches in pest management. Nanoparticles represent a new generation of environmental remediation technologies that provide cost–effective solution to some of the most challenging insect pests. S.litura (F.) (Lepidoptera: Noctuidae) is a major polyphagous pest of field crops and vegetables, causing severe damage to the plants in all phenological crop stages.

9p caygaocaolon3 27-02-2020 13 0   Download

An increase in outdoor activities and habits of human frequently result in more exposure to UV radiation of sun. UV radiation is a known carcinogen and also responsible for sunburn and tanning. Different protective measures such as sunscreen lotions and protective clothing/accessories are being used for protection against harmful UV effects of sunlight. Sunscreen gives protection for a certain period of time therefore sun-protective clothing is the single most effective way to protect oneself from the harmful UV rays for a long time.

8p chauchaungayxua3 07-02-2020 10 2   Download

Modern-day smog is often referred to as ‘photochemical’ smog. It is produced by complex, sunlight-stimulated chemical reactions among the components of automobile exhaust. It is responsible for much of today's air pollution in cities such as Los Angeles and Denver. Carbon monoxide from incomplete combustion of automobile engines, particulate matter and NOx all react to generate the noxious brown haze. An estimated 80% of smog today arises from vehicle exhausts. Not only does smog smell bad and obstructs vision, but both short-term and long-term exposure to it may be hazardous.

11p tainhacmienphi 19-02-2013 52 3   Download

A risk factor is anything that changes a person's chance of getting a disease such as cancer. Different cancers have different risk factors. For example, unprotected exposure to strong sunlight is a risk factor for skin cancer and smoking is a risk factor for cancers of the lungs, mouth, larynx, esophagus, bladder, and several other organs. Scientists have found few risk factors that make a person more likely to develop adrenal gland tumors. Even if a patient does have one or more risk factors for adrenal gland tumors, it is impossible to know for sure how much that risk factor...

0p khongmuonnghe 07-01-2013 45 2   Download

Methanol: Short-term inhalation of methanol is linked to motor dysfunctions and visual disturbances such as blurred vision leading to blindness. Long-term exposure can result in headaches, insomnia and visual disturbances. There is no evidence linking exposure to methanol and cancer. Toluene, xylenes, MEK, MIBK and methanol also are classified as VOCs. Once released to the atmosphere, VOCs react with nitrogen oxides and sunlight to form ground-level ozone.

40p can_thai 10-12-2012 50 8   Download

Sunlight is the most visible and obvious source of comfort in the environment. The sun provides the beneficial effects of warmth and vitamin D synthesis; however, acute and chronic sun exposure also have pathologic consequences. Few effects of sun exposure beyond those affecting the skin have been identified, but cutaneous exposure to sunlight is the major cause of human skin cancer and can exert immunosuppressive effects as well. The sun's energy reaching the earth's surface is limited to components of the ultraviolet (UV), the visible, and portions of the infrared spectra. ...

19p socolanong 25-04-2012 37 2   Download

Harrison's Internal Medicine Chapter 57. Photosensitivity and Other Reactions to Light Solar Radiation Sunlight is the most visible and obvious source of comfort in the environment. The sun provides the beneficial effects of warmth and vitamin D synthesis; however, acute and chronic sun exposure also have pathologic consequences. Few effects of sun exposure beyond those affecting the skin have been identified, but cutaneous exposure to sunlight is the major cause of human skin cancer and can exert immunosuppressive effects as well.

5p konheokonmummim 03-12-2010 82 5   Download

Neoplastic disease In most cases, the cause of cancer is multifactorial. About 75% of cancers are due to environmental factors, some of which are within the control of the individual, e.g. tobacco smoking, exposure to sunlight. Growing understanding of cancer genetics and inherited disease suggests that fewer than 10% of cancers are familial.The different systemic modalities used to treat cancer patients are discussed. Immunosuppressive drugs are described here as they share many characteristics with cytotoxics. ...

19p bigbaby87 03-09-2010 100 10   Download