IMPORTANCE Primary prevention and early detection are integral strategies to reduce the burden of skin cancer. OBJECTIVES To describe the prevalence of sun protection and skin examination practices in a population exposed to high levels of ambient solar radiation and to identify associated factors. DESIGN, SETTING, AND PARTICIPANTS Cross-sectional analyses of baseline data from a prospectiv...

BACKGROUND The objective of this study was to determine the factors associated with sun exposure behaviors among Operating Engineers (heavy equipment operators). METHODS Operating Engineers (N = 498) were asked to complete a cross-sectional survey. Linear and logistic regression analyses were used to determine health behavioral, perceptional, and demographic factors associated with sun exposu...

Skin cancer is the most common form of cancer; the World Health Organization estimates that more than 2 million cases of skin cancer are being diagnosed each year worldwide. Excessive sun exposure and ultraviolet (UV) radiation are the major avoidable risk factors for skin cancer, including melanoma. Sun protection can be achieved through behavioral modification, social changes and environmenta...

The sun glint is a major issue for the observation of ocean color from space. For sensors without a tilting capacity, the observations at sub-tropical latitudes are contaminated by the bright pattern of the specular reflexion of the sun by the wavy sea surface. Common atmospheric correction algorithms are not designed to work in these observation conditions, reducing the spatial coverage at suc...

Author affiliations: Centre for Medical Anthropology and Behavioral Health, Sun Yat-sen University, Guangzhou, China (J.T.F. Lau); Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China (J.T.F. Lau); Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China (J.T.F. Lau, Z. Wang, Y. Kim, Q. Zhou, P. Cheng); Sun Yat-sen ...

We present a theoretical magnetohydrodynamic (MHD) model describing the time-dependent expulsion of a three-dimensional coronal mass ejection (CME) out of the solar corona. The model relates the white-light appearance of the CME to its internal magnetic Ðeld, which takes the form of a closed bubble, Ðlled with a partly anchored, twisted magnetic Ñux rope, and embedded in an otherwise open backg...

Additional Contributions:We are indebted to themycological laboratory staff of Sun Yat-sen University, Sun Yat-senMemorial Hospital, including Li Yan Xi, MD, PhD; ChangMing Lu, MD; Sha Lu, MD, PhD; and Ying Hui Liu, MD, without whose invaluable assistance this study could not have been performed. These persons received no payment for their contributions beyond that received in the normal course...

Understanding how Earth has sustained surface liquid water throughout its history remains a key challenge, given that the Sun's luminosity was much lower in the past. Here we show that with an atmospheric composition consistent with the most recent constraints, the early Earth would have been significantly warmed by H(2)-N(2) collision-induced absorption. With two to three times the present-day...

BACKGROUND The melanoma incidence has increased over recent decades. Educational campaigns aim to encourage protection from the sun and early detection of melanoma. METHODS During a campaign in Switzerland, information on risk factors, sun protection and melanoma prevention was distributed. 10987 people completed a questionnaire regarding risk factors, and 2746 people were examined by a derma...