4,eOO m in a hypobaric chamber under ambient temperatures of 16°C , 20"C, 24°C and 28°C . Oxygen uptake (Vo2), cardiac output (Q ; C02 rebreathing method), arteriovenous 02 difference (AVOD), heart rate (HR), and stroke volume (SV) were rneasured during two successive submaximal exercises after 2 hours of exposure. Vo2 and SV at high altitudes were similar to those at sea level. Q and HR at a g...

BACKGROUND Thermal imagers have been used in a number of disciplines to record animal surface temperatures and as a result detect temperature distributions and abnormalities requiring a particular course of action. Some work, with animals infected with foot-and-mouth disease virus, has suggested that the technique might be used to identify animals in the early stages of disease. In this study, ...

Seasonal infertility is often observed as anestrus and a lower conception rate resulting in a reduced farrowing rate (FR) during late summer and early autumn. This is often regarded as an effect of heat stress; however, we observed a reduction in the FR of sows even after correcting for ambient temperature in our data. Therefore, we added change in photoperiod in the analysis of FR considering ...

BACKGROUND Biologic disease-modifying antirheumatic drugs, including tumor necrosis factor inhibitors such as etanercept (Enbrel®), have improved outcomes for patients with rheumatic and other inflammatory diseases, with sustained remission being the optimal goal for patients with rheumatoid arthritis. Flexible and convenient treatment options, compatible with modern lifestyle, are important in...

A survey of the literature on the incidence of the age of onset of presbyopia in various parts of the world reveals a great deal of variation. At first sight this appears to correlate with geographical latitude, but statistical and epidemiological evidence rules this out in favour of ambient temperature. Indirect evidence suggests that the crystalline lens is located sufficiently near to the su...

Heat strain is a potential risk factor for racing greyhounds in hot climates. However, there have been limited studies into the incidence of heat strain (when excess heat causes physiological or pathological effects) in racing greyhounds. The aim of this study was to determine if heat strain occurs in racing greyhounds, and, if so, whether environmental factors (e.g., ambient temperature and re...

BACKGROUND Many studies have examined the association between ambient temperature and mortality. However, less evidence is available on the temperature effects on gender- and age-specific emergency department visits, especially in developing countries. In this study, we examined the short-term effects of daily ambient temperature on emergency department visits (ED visits) in Shanghai. METHODS...

STUDY QUESTION Does maternal exposure during pregnancy to higher ambient temperature increase the risk of congenital heart defects (CHDs)? SUMMARY ANSWER Significant associations were found between maternal exposure during pregnancy to higher ambient temperature and CHDs risk especially during the cold season. WHAT IS KNOWN ALREADY From rodents to non-human primates, a teratogenic effect of...

The effects of ambient temperature (13.50C, 21°C, 30°C) and type of wound on healing of skin wounds were evaluated in common garter snakes (Thamnophis sirtalis). Linear unsutured incisions and circular excisional wounds were evaluated grossly and microscopically in three snakes held at each temperature at each of two, fi've and ten days after surgery. Linear sutured and unsutured incisions and ...

A laboratory experiment was conducted to investigate the performance characteristics of the currently available highpower LEDs under various drive conditions and ambient temperatures. Light output degradation and color shift properties as a function of time were measured for five types of commercial high-flux LEDs, namely, red, green, blue, and white from one manufacturer, and a different high-...