An acute Actinobacillus pleuropneumonia challenge was used to study changes in rectal and radiant surface temperatures over 18 h. From 3.5 to 15 h after challenge, rectal temperatures were elevated in challenged pigs compared to nonchallenged controls. From 6 through 18 h after challenge, infrared surface temperature was higher for challenged pigs versus control nonchallenged pigs. Correlation ...

The role of L-DOPA in spinal nociceptive reflex activity has been re-evaluated. In high spinal cats, with supraspinal loops being excluded, the onset of reflex facilitation induced by noxious radiant heat is delayed after injection of L-DOPA by 4 to 10 s, i.e. the early component of nociceptive reflex facilitation is blocked, while the late component persisted. Further investigations have shown...

This article introduces a methodology for designing the geometry of diffuse-walled radiant enclosures through nonlinear programming. In this application, the enclosure is represented parametrically using B-spline curves, while the radiosity distribution is solved by infinitesimal-area analysis. The enclosure geometry is repeatedly adjusted with a gradientbased minimization algorithm until a nea...

This project addresses three closely related and similarly complex questions: First, using currently available simulation software, what methods might be appropriate for comparing slabintegrated radiant cooling to more conventional alternatives, such that the results are sufficiently fair and comprehensive to support system selection and design? Second, what is the relative performance of repre...

Skin temperatures and radiant energy were measured on a subject wearing flight clothing, sitting in a tactical aircraft exposed to thermal energy characteristic of thermonuclear weapons. Radiant energy source was 960 lamps at power levels up to 4000 kilowatts. After exposures of increasing severity, subject tolerance was attained in a 3 cal/cm pulse of 3.7 seconds duration. This pulse charred p...

This paper deals with the evaluation of the outdoor performances of a composite roof, composed of a corrugated iron rooftop, a radiant barrier and a ceiling made of wood, each component being separated by an air space. This assembly is mounted on a small-scale test cell, named Isotest, designed and set up for research purposes. Isotest is installed on an experimental platform, dedicated to the ...

Several studies suggest that welding is detrimental to the male reproductive system. Welding fume and radiant heat are of interest as possible causal factors. This study investigates semen quality and sex hormone concentrations among 17 manual metal arc alloyed steel welders with a moderate exposure to radiant heat (globe temperature ranging from 31.1 to 44-8'C), but without substantial exposur...

This paper presents an optimization methodology for designing radiant enclosures containing specularly-reflecting surfaces. The optimization process works by making intelligent perturbations to the enclosure geometry at each design iteration using specialized numerical algorithms. This procedure requires far less time than the forward ‘‘trial-anderror’’ design methodology, and the final solutio...

An outline is given of the use of operant conditioning techniques in the study of the behavior of farm animals. Using operant methods, pigs and sheep placed in cold environments have been trained to perform simple responses in order to obtain radiant heat. Factors which influence this behavior such as level of nutri t ion, ambient temperature and the intensity of the radiant heat have been exam...

Normal modes, quasi-normal modes and super-radiant modes are studied to clarify the total dynamics for complex scalar fields in Kerr anti-de Sitter black hole spacetime. Orthonormal relations and quasi-orthonormal relations are obtained for normal modes and quasi-normal modes. Mode expansions are done and the conserved quantities are studied. Any modes are shown to be separated into two groups,...