(a.) Relating to the daytime; belonging to the period of daylight, distinguished from the night; -- opposed to nocturnal; as, diurnal heat; diurnal hours.
(a.) Daily; recurring every day; performed in a day; going through its changes in a day; constituting the measure of a day; as, a diurnal fever; a diurnal task; diurnal aberration, or diurnal parallax; the diurnal revolution of the earth.
(a.) Opening during the day, and closing at night; -- said of flowers or leaves.
(a.) Active by day; -- applied especially to the eagles and hawks among raptorial birds, and to butterflies (Diurna) among insects.
(a.) A daybook; a journal.
(a.) A small volume containing the daily service for the "little hours," viz., prime, tierce, sext, nones, vespers, and compline.
(a.) A diurnal bird or insect.
Example Sentences:
(1) Four of 18 patients showed no change over the twenty-four hours while 7 patients showed some variation without definite diurnal pattern.
(2) The amount of EB or progesterone injected seemed unimportant but, in either case, had to be given within a limited diurnal period of sensitivity.
(3) Seven days of constant light, however, reverses this diurnal variation such that plasma prolactin levels peak at 11:30 AM and reach a nadir at approximately 11:30 PM.
(4) Study of the clinical characteristics of depressive state by hemisphere stroke with the use of symptom items of Zung scale and Hamilton scale showed that patients in depressive state with right hemisphere stroke had high values in symptom items considered close to the essence of endogenous depression such as depressed mood, suicide, diurnal variation, loss of weight, and paranoid symptoms, while patients in depressive state with left hemisphere stroke had high values in symptom items having a nuance of so-called neurotic depression such as psychic anxiety, hypochondriasis, and fatigue.
(5) Intraocular pressure was investigated with multiple 12-hour diurnal curves.
(6) The purpose of this study was to examine the pattern of diurnal variation of blood pressure in normotensive working women, and to assess the effect of work stress on this pattern.
(7) In order to clarify the diurnal pattern of secretion of plasma immunoreactive (IR) proopiomelanocortin (POMC)-derived peptides, IR-N-terminal peptide (Nt), IR-beta-endorphin (Ep), IR-beta-lipotropin (LPH), and IR-ACTH (ACTH) in normal subjects and in patients with Addison's disease and Cushing's disease, we measured these 4 peptides in the same plasma obtained at 0900 h and then every three hours until 0600 h at the next day.
(8) When administered to adult patients with urge incontinence (generally as a 25mg twice-daily dose) terodiline reduces diurnal and nocturnal micturition frequency and incontinence episodes.
(9) These findings would suggest that hereditary progressive dystonia with marked diurnal fluctuation could show not only a diurnal fluctuation but also age-dependent changes of symptoms.
(10) The diurnal rhythms of sleep-wake activity, motor activity, and Tbr were not affected in rats.
(11) No IgE circadian rhythm was validated in healthy children while a large amplitude (approximately equal to 30% of the 24 hours mean) circadian rhythm with 2 diurnal peaks and a nocturnal trough was demonstrated (P less than 0.0023) in the asthmatics.
(12) The degree of change was comparable during the diurnal and nocturnal periods.
(13) A diurnal pattern, however, could not be shown in the corticosterone response to immobilization.
(14) In one rat studied 30 days after ocular enucleation the diurnal rhythm in synthesis persisted; however, relative to 4 days after enucleation the phase of the rhythm shifted about 90 degrees suggesting that light deprivation caused the rhythm to become free-running with a period slightly different from 24 h.
(15) It has a relatively short half-life, and large diurnal fluctuations in serum concentrations occur, thus making it difficult to define clear relationships between individual serum concentrations and either therapeutic or adverse effects.
(16) Vocalizations exhibited diurnal peaks of occurrence (0600-0800, 1600-1800 h).
(17) The syndrome of obstructive sleep apnoea is associated with an increased morbidity (the consequence of diurnal hypersomnolence and cardiovascular complications).
(18) 1) Diurnal patterns of the above-mentioned items were recorded, mutual relationships relationships between these items were revealed.
(19) Plasma and IL peptide levels were relatively constant during daylight hours (0600-1800 h), but increased after the onset of darkness and reached maximal concentrations at 0200 h. To examine the possibility that this diurnal rhythm in the content and secretion of POMC-derived peptides resulted from diurnal changes in the biosynthesis of POMC, the concentration and rate of synthesis of POMC mRNA were examined.
(20) The diurnal variation of [125I]iodomelatonin binding sites in the brain and serum melatonin levels were studied at 4-hour intervals under a 12 h:12 h light:dark cycle in 5-week-old chicks.
Occur
Definition:
(v. i.) To meet; to clash.
(v. i.) To go in order to meet; to make reply.
(v. i.) To meet one's eye; to be found or met with; to present itself; to offer; to appear; to happen; to take place; as, I will write if opportunity occurs.
(v. i.) To meet or come to the mind; to suggest itself; to be presented to the imagination or memory.
Example Sentences:
(1) Once treatment began, no significant changes occurred in Group 1, but both PRA and A2 rose significantly in Groups 2 and 3.
(2) Direct fetal digitalization led to a reduction in umbilical artery resistance, a decline in the abdominal circumference from 20.3 to 17.8 cm, and resolution of the ascites within 72 h. Despite this dramatic response to therapy, fetal death occurred on day 5 of treatment.
(3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
(4) It is concluded that during exposure to simulated microgravity early signs of osteoporosis occur in the tibial spongiosa and that changes in the spongy matter of tubular bones and vertebrae are similar and systemic.
(5) HSV I infection of the hand classically occurs in children with herpetic stomatitis and in health care workers infected during patient care delivery.
(6) Such an increase in antibody binding occurred simultaneously with an increase in the fluidity of surface lipid regions, as monitored by fluorescence depolarization of 1-(trimethylammoniophenyl)-6-phenyl-1,3,5-hexatriene.
(7) As far as acrophase table is concerned for all enzymes and fractions the acrophase occurred during the night.
(8) Electronmicroscopical investigations have revealed that, under normal conditions, a minor vesicular transfer of intravenously injected peroxidase occurs across the endothelium in segments of arterioles, capillaries and venules, especially in arterioles with a diameter about 15-30 mu.
(9) No significant change occurred in the bacterial population of our hospital unit during the period of the study (more than 3 years).
(10) The highest rate of discontinuation occurred when method choice was denied in the presence of husband-wife agreement on method choice, and the lowest rate occurred when method choice was granted in the presence of such concurrence.
(11) The secondary leukemia that occurred in these patients could be distinguished from the secondary leukemia that occurs after treatment with alkylating agents by the following: a shorter latency period; a predominance of monocytic or myelomonocytic features; and frequent cytogenetic abnormalities involving 11q23.
(12) An inflammatory process than occurs in the airways that is characterized by an influx of eosinophils and neutrophils into the airway epithelium and bronchial fluids.
(13) A clinical and microbiologic response occurred when anticoagulation therapy with heparin was added to the treatment regimen.
(14) Infection with opportunistic organisms, either singly or in combination, is known to occur in immunocompromised patients.
(15) A commensurate rise in both smoking and adenocarcinoma has occurred in the Far East where the incidence rate (40%) is twice that of North America or Europe.
(16) As prolongation of the action potential by TEA facilitates preferentially the hormone release evoked by low (ineffective) frequencies, it is suggested that a frequency-dependent broadening of action potentials which reportedly occurs on neurosecretory neurones may play an important role in the frequency-dependent facilitation of hormone release from the rat neurohypophysis.
(17) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
(18) Angle closure glaucoma is a well-known complication of scleral buckling and it is of particular interest when it occurs in eyes with previously normal angles.
(19) The concentrations of five normally occurring protease inhibitors in serum and synovial fluid were compared in patients with rheumatoid arthritis, osteoarthrosis, and normal controls.
(20) A strong block to the elongation of nascent RNA transcripts by RNA polymerase II occurs in the 5' part of the mammalian c-fos proto-oncogene.