GIBBS, C. L., AND W. R. GIBSON. Energy production of t-at soleus muscle. Am. J. Physiol. 223(4): 864-871. 1972.-A thermopile was used to record the heat production of rat soleus muscles, weighing between 16 and 96 mg, at 27 C. The muscles were subjected to isotonic and isometric tetani, 2 set in duration, and the stimulus frequency was 30 Hz. As well as recording initial energy production, reco...

organization of photoreceptor systems, they analyze in detail photosynthesis, photoperiodism and photomorphogenesis (including phytochrome), photo-tropism and phototaxis, direct stimulation by light and vision. They then describe deleterious effects of radiations, photoreactivation and optical activity in biological systems. The appendices contain physical constants, conversion factors, stateme...

Wind sensors are widely used in many critical applications, such as navigation, weather forecast, aerospace and wind energy assessment. The thermal wind sensor can measure wind speed and direction at the same time, by measuring the temperature gradient on the sensor's surface which is induced by the wind flow. Compared to traditional mechanical wind sensors, there are two main advantages for th...

Abstract. Surface-based measurements of broadband shortwave (solar) and longwave (infrared) radiative fluxes using thermopile radiometers are made regularly around the globe for scientific operational environmental monitoring. The occurrence ice on sensor windows in cold environments – whether snow, rime, or frost is a common problem that difficult to prevent as well correct post-processing. Ba...

Since the discovery of the carcinogenicity of ultraviolet radiation, work on this subject has been directed toward specification of the wave lengths involved and determination of the energy requirements of the process (1, 2, 3, 8). A filter for the isolation of wave lengths 2,800-3,400 * was described and the production of tumors with this portion of the spectrum reported in a previous publicat...

Improvements are described in the method of following temperature changes, and thus alterations in vasomotor tone, in exposed mucous membranes. Invention of an applicator holder, by means of which more sure and stable apposition of the thermopile terminals to the mucous surface may be effected has been the chief advance. Minor improvements have been the use of a saliva ejector and of better cal...

The nature of the specific electrical reaction of plants to the action of different factors, such as temperature, light, electrical current and chemical agents, is an important problem in plant physiology. A light signal causes an electrical response of a specific nature. In general, the photoreaction depends on photosynthesis and the transport of ions across membranes in the chloroplasts and a...

In the difference absorption spectrum of thin, actively growing* aerobic suspensions of Chlorella pyrenoidmu, both the 480 mp (negative) and the 520 rnp (positive) bands are produced by light absorbed in chlorophyll b and chlorophyll a; the ratio of absorption changes caused by equal number of incident quanta of 650 mp light and those of 680 mp light, is about 1.2. Both effects are partially in...

Various installations and appliances used by building occupants during the day are manually operated, including office devices and kitchen appliances. Traditionally, activity monitoring systems require multi-modal sensor installations in order to monitor these types of rooms. These large multi-modal installations often require active maintenance to ensure robust operations. Due to large number ...