(a.) Emitting or proceeding as from a center; resembling rays; radiating; radiate.
(a.) Especially, emitting or darting rays of light or heat; issuing in beams or rays; beaming with brightness; emitting a vivid light or splendor; as, the radiant sun.
(a.) Beaming with vivacity and happiness; as, a radiant face.
(a.) Giving off rays; -- said of a bearing; as, the sun radiant; a crown radiant.
(a.) Having a raylike appearance, as the large marginal flowers of certain umbelliferous plants; -- said also of the cluster which has such marginal flowers.
(n.) The luminous point or object from which light emanates; also, a body radiating light brightly.
(n.) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.
(n.) The point in the heavens at which the apparent paths of shooting stars meet, when traced backward, or whence they appear to radiate.
Example Sentences:
(1) The thermoregulatory effects of isothermogenic doses of isoproterenol (Iso) and a novel beta-agonist (BRL 35135) were tested in rats at 22 degrees C and in rats trained to bar press for radiant heat at -8 degrees C. BRL 35135 produced hyperthermia at 22 degrees C and reduced operant responding for heat at -8 degrees C, whereas Iso reduced body temperature and increased operant responding.
(2) During five of the treatments skin cooling, by means of initiating air flow through the radiant heating device, was necessary during the plateau phase because rectal temperature exceeded the target value.
(3) It has been found that the UV radiation-induced extreme state of the cells in a radiant culture produces distantly in an intact detector culture, which has only an optic contact with it, the cytopathic effect (CPE) as a repercussion of a specificity of morphological manifestations imprinted in the affected culture.
(4) Extracellular activity of single WDR neurons in the spinal dorsal horn, which was evoked by a radiant heat stimulus (51 degrees C), was recorded in decerebrate, spinally transected cats.
(5) In both patients, there was a more or less remote history of eye exposure to some form of radiant energy, together with other possible etiologic factors.
(6) A study was performed to investigate whether measurements of the evaporation rate from the skin of newborn infants by the gradient method are affected by the presence of non-ionizing radiation from phototherapy equipment or a radiant heater.
(7) Tiny (0.2% TBS), partial thickness, non-contact radiant heat burns in guinea pigs resulted, within 3 hours, in significant edema formation and protein leakage at the site of the injury.
(8) Brief radiant heat pulses, generated by a CO2 laser, were used to activate slowly conducting afferents in the hairy skin in man.
(9) In the incubator, the spatial variation in radiant temperatures exceeded 2 degrees C, or four times the spatial variation in air temperatures (0.5 degrees C).
(10) The water losses create an additional problem in managing infants under radiant warmers.
(11) After Second World War army service, his physique, graceful carriage and radiant grin took him from lift attendant to Broadway and instant movie stardom in The Killers (1946).
(12) Experimental C-fiber pain caused by radiant heat was applied to the skin area supplied by the left sural nerve of 20 subjects.
(13) The Bair Hugger set on "medium" decreased heat loss more than each radiant warming device and as much as the circulating-water blanket.
(14) Tail-flick latency (the time needed to evoke the tail-flick reflex by noxious radiant heat) was reduced for 1-4 min after intrathecal administration of substance P (5 micrograms), but the tail skin temperature was not significantly changed.
(15) She looks cheery when attacking, even cheerier when attacked and absolutely radiant when descending into a bog of half-truths and fictions.
(16) Compensation for cold air temperature was imperfect because the chicks avoided zones of high radiant flux.
(17) Above threshold, mass removal rates were proportional to laser radiant exposure.
(18) A model of ocular and facial skin exposure to UVB is presented that combines interview histories of work activities, leisure activities, eyeglass wearing, and hat use with field and laboratory measurements of UV radiant exposure.
(19) (table; see text) The direct gain from solar radiation is approximately 100 W. In the shade period the reduction in radiant heat gain is compensated for by the decreased evaporation of sweat.
(20) Possible interactions between mu- and delta-receptors in the rat spinal cord were studied using the radiant-heat-induced tail flick response and the highly selective mu- or delta-ligands: [NMePhe3,D-Pro4] morphiceptin(PL-17) and cyclic[D-Pen2,D-Pen5]enkephalin(DPDPE).
Radiation
Definition:
(n.) The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.
(n.) The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.
Example Sentences:
(1) Recently, it has been shown that radiation therapy, alone or combined with chemotherapy, can be successful.
(2) Sixteen patients were operated on for lumbar pain and pain radiating into the sciatic nerve distribution.
(3) Because of the small number of patients reported in the world literature and lack of controlled studies, the treatment of small cell carcinoma of the larynx remains controversial; this retrospective analysis suggests that combination chemotherapy plus radiation offers the best chance for cure.
(4) Breast conserving surgery in patients with small tumors combined with radiation therapy has gained wide popularity due to better cosmetic results without significant changes in survival.
(5) A Monte Carlo simulation was performed to characterize the spatial and energy distribution of bremsstrahlung radiation from beta point sources important to radioimmunotherapy (RIT).
(6) While both inhibitors caused thermosensitization, they did not affect the time scale for the development of thermotolerance at 42 degrees C or after acute heating at 45 degrees C. The inhibitors of poly(ADP-ribosylation) radiosensitizers and thermosensitizers may be of use in the treatment of cancer using a combined modality of radiation and hyperthermia.
(7) 11 patients with a postoperative classification of stage D had additional external beam radiation to the pelvic and paraaortic lymph nodes with shielding of the implanted prostatic region.
(8) Data are shown for both mutagenesis and carcinogenesis, indicating that, in this respect, even the smallest average organ absorbed dose can be effective, particularly for high-LET radiation.
(9) Protein kinase C (PKC) is activated rapidly and transiently following ionizing radiation exposure and is postulated to activate downstream nuclear signal transducers.
(10) It was found that there was a substantial increase in mortality rates in the area under the jets where there was large noise radiation.
(11) This was treated with local radiation therapy consisting of 2700 rads administered in 15 fractions during a period of 28 days.
(12) This linkage information was used to design complementation tests to determine allelism with previously characterized complementation groups affecting sensitivity to radiation.
(13) There was good agreement between the survival of normally oxygenated cells in culture and bright cells from tumors and between hypoxic cells in culture and dim cells from tumors over a radiation dosage range of 2-5 Gray.
(14) At the completion of radiation therapy, nine patients had negative biopsies.
(15) It has a poor prognosis prior to the current combined treatment of surgical ablation, radiation to the surgical field, and chemotherapy for microscopic metastases.
(16) Radiation exposure resulted in further significant decrease of T-cell count (but not B cells) in the elderly.
(17) This study reviewed 148 patients who had received radiation for head and neck cancer.
(18) The significantly lower radiation sensitivity of FL-marker than that of infectivity indicates that only part of the genome is responsible for the FL-marker.
(19) Treatment modalities included: partial temporal bone resection, subtotal temporal bone resection, total temporal bone resection, radical mastoidectomy followed by radiation therapy, radiation therapy alone, and chemotherapy.
(20) In addition, a new dosage concepts has been introduced on the basis of the effective dose on the lines of the recommendations by the IRCP; as a result, the definitions of radiation protection areas and of dosage limit values had to be revised and reworded.