James B. Mercer

Learn More
BACKGROUND Water-filtered infrared-A (wIRA) is a special form of heat radiation with a high tissue-penetration and with a low thermal burden to the surface of the skin. wIRA is able to improve essential and energetically meaningful factors of wound healing by thermal and non-thermal effects. AIM OF THE STUDY prospective study (primarily planned(More)
Water-filtered infrared-A (wIRA) as a special form of heat radiation with a high tissue penetration and with a low thermal load to the skin surface acts both by thermal and thermic as well as by non-thermal and non-thermic effects. wIRA produces a therapeutically usable field of heat in the tissue and increases tissue temperature, tissue oxygen partial(More)
In conscious rabbits with chronically implanted hypothalamic thermodes sustained panting was induced by exposure to 39 degrees C ambient temperature. Core temperature (Tc) measured in the esophagus was maintained at hyperthermic levels of about 41.1, 40.2 and 39.2 degrees C by controlled heat extraction with a cooling thermode inserted into the colon.(More)
The central portion of chronic wounds is often hypoxic and relatively hypothermic, representing a deficient energy supply of the tissue, which impedes wound healing or even makes it impossible. Water-filtered infrared-A (wIRA) is a special form of heat radiation with a high tissue penetration and a low thermal load to the skin surface. wIRA produces a(More)
Experiments were performed on conscious goats to confirm the suggestion that in this species the inner body contains more thermosensitive structures than those residing in the hypothalamus and spinal cord. For this purpose goats were chronically implanted with local thermodes and intravascular heat exchangers to allow independent temperature control of the(More)
1. Extrahypothalamic thermosensitivity at normal (39 degrees C) and lowered (33.8 degrees C) hypothalamic clamp temperatures has been measured in cold exposed rabbits equipped with chronically implanted hypothalamic perfusion thermodes. The animals were subjected to body core cooling by means of cold perfused thermodes placed in the colon. 2. At lowered(More)
This paper presents some results of forest canopy height estimation from L-Band polarimetric InSAR data. Three approaches have been tested using a set of PolSARproSim simulated data as well as real data from the INDREX-II campaign. The approaches are: 1) DEM differencing, 2) 2-D search, and 3) Combined. The results show that the DEM differencing approach(More)
Hypothalamic thermosensitivity has been investigated in conscious Willow Ptarmigan (Lagopus lagopus lagopus) provided with chronically implanted hypothalamic perfusion thermodes. The birds were exposed to either cold (Ta - 10 degrees C) or warm (Ta + 25 degrees C) ambient conditions while hypothalamic temperature (Thy) was clamped for periods of 20 min at(More)
In 5 conscious goats, 84 experiments with 881 perfusion periods were performed to explore the brain stem between the rostral medulla and preoptic region for thermo-sensitive structures involved in temperature regulation. The chronically implanted thermodes consisted of 24 or 27 single probes, which were arranged in 8 or 9 rows. The rows of probes were(More)
Intraoperative use of dynamic infrared thermography and indocyanine green fluorescence video angiography to predict partial skin flap loss Abstract Inadequate perfusion is the most common cause of partial flap loss in reconstructive surgery. Intraoperative monitoring of flap perfusion may prevent such loss. This study compared indocyanine green fluorescence(More)