(v. t.) The act of hindering, or the state of being hindered.
(v. t.) That which hinders; an impediment.
Example Sentences:
(1) The increased hindrance to diffusion of the probing molecules caused by the added solutes is considered as good evidence that the probing molecules diffuse by way of pores filled with water.6.
(2) We develop an analogy between the steric hindrance among receptors detecting randomly placed haptens and the temporary locking of a Geiger counter that has detected a radioactive decay.
(3) The relative reactivities of three o-substituted phenols can be explained in terms of steric hindrance which is minimal for a single o-substituent.
(4) The lower affinity of C8-substituted 7-methyl-1,3-dipropylxanthines can be explained quantitatively with steric hindrance, which C8-substituents experience from the 7-methyl group in these conformations.
(5) A comparison of the antioxidant activities of eight 1,4-naphthoquinones indicated that methyl substitution of C-2, lack of steric hindrance at C-3 or C-5, and (in the case of weak acids) a relatively high pKa are favorable structural features associated with strong antioxidant activity.
(6) However, no steric hindrance can be seen between subunits when the subunits in carbonmonoxy Hb are substituted with the corresponding subunits in deoxy Hb.
(7) This suggests that the one-carbon binding site can accomodate two one-carbon groups simultaneously without serious steric hindrance.
(8) Inter-molecular spread of the conformational change among the molecules of PVX protein was demonstrated in DAS-ELISA, when capture mAb inhibited binding of detecting mAb in the absence of steric hindrance.
(9) 46% of the fatal accidents were caused by crashing against hindrances.
(10) Partial hindrance was observed for the third antibody mAb delta 22.
(11) Intraocular horseradish peroxidase (HRP) accumulated in severed optic axons but was transported with no obvious hindrance in spared axons alongside the lesion.
(12) The molecular areas at which the phase transition occurs under the various experimental conditions, together with a parallel analysis of the hydration states and related molecular areas of the DPPC molecules in multilayers, strongly suggest that the steric hindrance associated with the hydration water of the polar head of DPPC molecules in the monolayer is responsible for the drastic decrease in diffusion coefficient in the liquid-condensed phase.
(13) The spondylodiscites were no hindrance for dorsal lordosing osteotomies and can be treated successfully by means of this static correction and the immobilisation.
(14) At the experiments with the isolated rat hearts, prepared by Langendorff, the anti-arrhythmic dose-effects of the water-soluble antioxidant fenozan from the class of steric-hindrance phenols were studied at condition of regional ischemia and reperfusion, as well as its action on the coronary flow.
(15) Taken together, these results suggest that tonin bound to alpha 1-macroglobulin keeps the active site intact and that inhibition of the enzyme activity is due to a steric hindrance.
(16) Because these inhibitors bind preferentially at the extracellular surface of the transporter, their effects must result from a conformational change rather than from steric hindrance.
(17) We propose that incA, in addition to sequestration, can also restrain replication by causing steric hindrance to the origin function.
(18) Vascular hindrance in muscle, but not hindlimb, was less during nerve stimulation in anemia than at normal Hct.
(19) Intense steric hindrance by introducing an enormously bulky group or complete elimination of the 17 beta-hydroxy group rather decreased the anti-androgenic activity.
(20) Their expertise led to this mess, and would be a hindrance, not a help, in cleaning it up.
Impede
Definition:
(v. t.) To hinder; to stop in progress; to obstruct; as, to impede the advance of troops.
Example Sentences:
(1) The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T).
(2) Technically speaking, this modality of brief psychotherapy is based on the nonuse of transferential interpretations, on impeding the regression od the patient, on facilitating a cognitice-affective development of his conflicts and thus obtain an internal object mutation which allows the transformation of the "past" into true history, and the "present" into vital perspectives.
(3) It was the purpose of this study to examine the relationship between body fluid compartments and multi-frequency bioelectrical impedance analysis (MF-BIA).
(4) For the different age categories the best prediction formula for the FFM from body impedance, sex, age and anthropometric variables was calculated.
(5) One is the right not to be impeded when they are going to the House of Commons to vote, which may partly explain why the police decided to arrest Green and raid his offices last week on Thursday, when the Commons was not sitting.
(6) HFV was delivered at frequencies (f) of 3, 6, and 9 Hz with a ventilator that generated known tidal volumes (VT) independent of respiratory system impedance.
(7) ECG and chest impedance were continuously monitored and recorded.
(8) Combined clinical observations, stroke volume measured by impedance cardiography, and ejection fractions calculated from systolic time intervals, all showed significant improvement in parallel with CoQ10 administration.
(9) The solution of these differential equations gives the velocity of the basilar membrane and hence other related quantities, e.g., displacement, pressure, driving-point impedance at the stapes.
(10) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
(11) Based on the timing and direction of the changes, the data imply that the traditional band impedance measurement is more closely related to the right heart event than to that of the left heart.
(12) Phenobarbital did not retard growth nor impede the response to vitamin D therapy of concomitant rickets.
(13) The possible use of impedance measurement with scalp electrodes to detect intracranial events non-invasively was investigated by measuring the localised impedance changes during cortical spreading depression (CSD) in anaesthetised rats.
(14) Of these patients, 27 (acute phase) and 36 (chronic phase) were studied for tissue impedance (RT) and interface impedance (Faraday resistance RF and Helmholtz capacity CH).
(15) We conclude that Doppler flow velocity waveform analysis is a valuable and non-invasive method to assess impedance to blood flow through the placental circulation in pregnant sheep.
(16) The resistive, but not the reactive, component of longitudinal impedance was significantly greater than predicted by the models at all frequencies.
(17) Observations were recorded by three distinctly different methods of measurement: the surgeon, the MD-2 Impedance Analyzer, and the Acoustic Otoscope immediately before and after induction of anesthesia.
(18) The factors which impeded good recovery were primary brain damage due to preceding diseases such as cerebral infarct or hemorrhage, initial head injury, parkinsonism, and postoperative psychiatric disturbances.
(19) No protection from stimulation-associated impedance modifications was provided by the systemic administration of a material of high osmolarity (Mannitol) but the usual impedance decrease was not seen after systemic administration of a glucocorticoid.
(20) Twenty preterm infants ventilated for the respiratory distress syndrome were studied on 44 occasions to identify the pattern of interaction between their spontaneous respiratory efforts and the ventilator, using three techniques: (1) an oesophageal balloon and pneumotachograph, (2) impedance respirography and (3) clinical scoring.