(n.) The act of exerting, or putting into motion or action; the active exercise of any power or faculty; an effort, esp. a laborious or perceptible effort; as, an exertion of strength or power; an exertion of the limbs or of the mind; it is an exertion for him to move, to-day.
Example Sentences:
(1) In some experiments heart rate and minute ventilation (central vactors) appear to be the dominant cues for rated perceived exertion, while in others, local factors such as blood lactate concentration and muscular discomfort seem to be the prominent cues.
(2) Noradrenaline decreased the phasic contraction amplitude of the circular muscle and exerted a stimulant effect on the tone which suggested an existence of two alpha 1-adrenoceptor subtypes.
(3) A complex of vitamins exerting a protective action on the system of coenzymic acetylation in the body have been tried.
(4) The photoinactivating effect of DMCT was also exerted upon other animal viruses tested, i.e.
(5) Both Diltiazem and Trifluoroperazin exerted a protective effect on the preservation of enzymatic activities and of ultrastructure in conditions of impaired calcium homeostasis.
(6) We have investigated the bacterial antagonism exerted in oral secretion by alpha-hemolytic streptococci against S. aureus and S. epidermidis.
(7) The hypothesis that monohydroxy bile acids exert their cholestatic and hepatotoxic effects via a sustained elevation of cytosolic [Ca2+] was tested in the isolated perfused rat liver.
(8) It is well established that the renal medulla exerts a potent endocrine-like antihypertensive action.
(9) (1) EXCP appears to be a more serious finding only in those higher risk individuals with either a positive EXECG or lower MAXRPP; (2) EXCP and its interactions may help discriminate between anginal and nonanginal, exertional chest pain, and (3) the contradictory results found when EXCP was allowed to interact may explain conflicting results in previous multivariate models regarding the predictive significance of EXCP.
(10) Pitch forward head movements exerted the strongest effect.
(11) Adenine sulfate, at the 0.01 mM level, was found to exert a significant protective effect.
(12) The effects exerted on the cervical spine by a traction of 150 N was studied by means of an improved radiographic technique.
(13) Furthermore, effector TH cells within the two compartments exert differential effector activities: splenic effector TH cells induce B cells to both proliferation and maturation, while thymic effector TH cells are defective in activating B-cell maturation.
(14) None of the treatments exerted any effect on fasting or one-hour insulin levels.
(15) These data support the conclusion that there are mechanisms intrinsic to each tissue which exert a degree of control during growth over its chemical composition; therefore, growth itself can be considered an intrinsic regulatory mechanism.
(16) It is concluded that ACh exerts a direct, excitatory action on geniculate neurons.
(17) Oxygen administered after arthritis is advanced still exerted a significant curative effect.
(18) This residue is thus non-essential for cardiotoxin to exert its biological action.
(19) 4-S-Cysteinylphenol (4-CP) has been shown to exert selective toxicity to melanocytes, causing growth inhibition of experimental malignant melanoma.
(20) A clear structure-mutagenicity relationship was observed in a series of aporphine alkaloids (aporphine, dehydroaporphine, 7-oxoaporphine and 4,5-dioxoaporphine), and 10,11-non-substituted aporphines were suggested to exert their mutagenicity through metabolic activation of the 10,11 positions, possibly as the 10,11-epoxides.
Torsion
Definition:
(n.) The act of turning or twisting, or the state of being twisted; the twisting or wrenching of a body by the exertion of a lateral force tending to turn one end or part of it about a longitudinal axis, while the other is held fast or turned in the opposite direction.
(n.) That force with which a thread, wire, or rod of any material, returns, or tends to return, to a state of rest after it has been twisted; torsibility.
Example Sentences:
(1) Prompt diagnosis, in which timely diagnostic laparoscopy and ultrasound evaluation of the pelvis may be helpful, provides the opportunity for prompt laparotomy with untwisting of the torsion and stabilization of the adnexa by suture and cystectomy, if possible, extirpation if not.
(2) In testing the contribution of the long, curved stem to the torsional stability of uncemented prostheses by comparing it with other stems, the long, curved stem was the most stable, followed by a shorter straight stem, and a short, proximally curved stem.
(3) The importance of prompt diagnosis of torsion is emphasized.
(4) In this paper, we develop functions suggested by and regression fit to crystallographic data which allow three of these torsion angles, alpha (O3'-P-O5'-C5'), delta (C5'-C4'-C3'-O3') and epsilon (C4'-C3'-O3'-P), to be calculated as dependent variables of those remaining.
(5) An alternative explanation, that there may be a pre-existing defect in spermatogenesis, was tested in 20 post-pubertal males with acute torsion.
(6) We measured the stiffness of comparable configurations (1 or 2 bars) under axial compression, four-point-bending in two planes, and torsion.
(7) (4) The spine becomes less flexible in the presence of preload when it is subjected to axial tension or axial torsion.
(8) On celiotomy, peritoneal effusion was present secondary to torsion of a 10 x 6 cm right ovarian cyst.
(9) Since some of these patients closely resembled cases of idiopathic torsion dystonia, the prior occurrence of asphyxia should be used as a criterion of exclusion for that diagnosis.
(10) These sequences adopt cruciform geometry when the DNA helix is torsionally strained by negative supercoiling.
(11) Gastric volvulus is an uncommon condition in which an acquired torsion of the stomach results in acute or chronic gastrointestinal symptoms.
(12) The adenine moiety is nearly planar and the torsional angle of the glycosidic linkage O(4')-C(1')-N(3)-C(4) is -161.5 degrees.
(13) Using the single criterion of presence or absence of identifiable intratesticular flow, the authors found that color Doppler was 86% sensitive, 100% specific, and 97% accurate in the diagnosis of torsion and ischemia in the painful scrotum.
(14) A single nucleotide structure having an anti adenine-ribose glycosidic torsional angle of -114 degrees was found to satisfy the experimental distance constraints.
(15) In group I (torsion maintained), unilateral torsion of the spermatic cord was maintained until the day of sacrifice; in group II (torsion and untwist), torsion of the spermatic cord was maintained for 8 to 12 hours, then the spermatic cord was untwisted and the testis was retained until the day of sacrifice.
(16) Values for helical torsional angles phi and psi assume a much wider range than anticipated.
(17) We report the clinical findings, diagnostic problems and treatment of a 1-year-old Coloured child (with classic 'prune belly syndrome') in whom the spleen had undergone torsion, thus simulating an intra-abdominal abscess.
(18) Idiopathic torsion dystonia (ITD) is characterized by sustained, involuntary muscle contractions, frequently causing twisting and repetitive movements or abnormal postures.
(19) The effect of increasing torsional stress on the conformation of the composing elements was determined by analysis of the sensitivity to the single strand-specific S1 endonuclease and it was observed that the sites of conformational alterations correspond to the positions relevant for promoter function (upstream activator sequence, TATA sequence, and RNA initiation site).
(20) Intranucleotide proton-proton distances combined with the knowledge of sugar puckers have been used to fix the glycosidic bond torsion angle (chi).