What's the difference between collision and percussion?

Collision


Definition:

  • (n.) The act of striking together; a striking together, as of two hard bodies; a violent meeting, as of railroad trains; a clashing.
  • (n.) A state of opposition; antagonism; interference.

Example Sentences:

  • (1) Structure assignment of the isomeric immonium ions 5 and 6, generated via FAB from N-isobutyl glycine and N-methyl valine, can be achieved by their collision induced dissociation characteristics.
  • (2) The reduction of such potentials can be explained in terms of collision between the antidromic volleys and those elicited orthodromically by chemical and thermic stimulation.
  • (3) The most common seenario was a vehicle-vehicle collision in which seat belts were not used and the decedent or the decedent's driver was at fault.
  • (4) One hypothesis to account for intercellular invasion proposes that a necessary condition for a cell type to be invasive to a given host tissue is that it lack contact paralysis of locomotion during collision with cells of that host tissue.
  • (5) The method requires that an orthodromic spike be recorded following an antidromic spike, with estimation of a collision interval analogous to that used for establishing antidromicity.
  • (6) We analized 71 car head-on collisions with 100 persons involved wearing seat belts.
  • (7) These questions are the points of collision of two immensely important spheres of interest in our everyday life.
  • (8) A woman who was 30 weeks pregnant was sitting with a three-point seat belt fastened in the front passenger seat of an automobile that was involved in a head-on collision.
  • (9) Instead of pulling off a rapprochement, the Brown ended up opening a new sore and he is, in all likelihood, on another collision course with his backbenchers, who have already recoiled from attempts to attach conditions to other welfare reforms.
  • (10) Collision is dependent on the hydrodynamic environment as well.
  • (11) What we are witnessing is the collision of two imperfect storms: the Conservative party’s turmoil over the future of taxation, and the transformation of the economy.
  • (12) This report, based on police records submitted to the Kentucky Transportation Cabinet from 1987 through 1989, characterizes motor-vehicle collisions with deer in Kentucky.
  • (13) There is only a minimal association of a poor prognosis with the speed or severity of the collision and the extent of vehicle damage.
  • (14) Collision locations were abstracted from police reports and assigned a census tract.
  • (15) These results indicate the usefulness of low-energy collision-activated dissociation tandem mass spectrometry in the daughter and parent scan modes for the analysis of ganglioside structure, in combination with fast atom bombardment mass spectrometry and high-energy collision-activated dissociation mass spectrometry.
  • (16) Five-part drama Collision was one of several successes last year, and ITV1 was named channel of the year last night, the day after Crozier's 46th birthday.
  • (17) Replays show that Maicon had an accidental collision with Lionel Messi's shoulder as a corner was sent in to the mixer.
  • (18) A Tn5tac1 insertion just inside the 3' end of cysQ, with its isopropyl-beta-D-thiogalactopyranoside-inducible tac promoter pointed toward the cysQ promoter, resulted in auxotrophy only when isopropyl-beta-D-thiogalactopyranoside was present; this conditional phenotype was ascribed to collision between converging RNA polymerases or interaction between complementary antisense and cysQ mRNAs.
  • (19) Most of the victims had multiple injuries, and only serious collisions, often with a heavier vehicle, led to fatal heart rupture.
  • (20) Induction of experimental neurosis (by collision of the alimentary and avoidance reflex) gave rise to changes not only in the output of HCl and gastric proteinases, but also in the ratio of macromolecular substances.

Percussion


Definition:

  • (n.) The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report.
  • (n.) Hence: The effect of violent collision; vibratory shock; impression of sound on the ear.
  • (n.) The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some interventing substance, as a pleximeter, is, used, it is called mediate.

Example Sentences:

  • (1) The results of the Tinel percussion test, the Phalen wrist-flexion test, and the new test were evaluated in thirty-one patients (forty-six hands) in whom the presence of carpal tunnel syndrome had been proved electrodiagnostically, as well as in a control group of fifty subjects.
  • (2) It imitates the conventional percussion massage of the thorax by introducing high-frequency gas oscillations (300 impulses per minute) into the tracheobronchial system.
  • (3) The effect of manual percussion of the thorax in nine patients with stable chronic airflow obstruction and excessive tracheobronchial secretion has been studied.
  • (4) In seven patients with severe respiratory distress, conventional mechanical ventilation and PEEP were used initially for respiratory support, which was changed to high-frequency percussive ventilation (HFPV) at the same level of airway pressure and FIO2.
  • (5) The effect of indomethacin administration on the mortality rate of brain-injured rats was studied in four groups of animals subjected to a level of injury with a fluid-percussion apparatus predetermined to cause 50% mortality (50% lethal dose, or LD50).
  • (6) This study presents a new device for producing experimental, concussive head injury together with a detailed description of biomechanical features of fluid percussion brain injury in the cat.
  • (7) A newer technique, ausculatory percussion, has been reported as having a far higher sensitivity.
  • (8) Sheep fail to demonstrate changes in any of these variables after severe percussive wave brain trauma.
  • (9) Beneficial effects for opiate receptor antagonists have also been observed after fluid percussion head injury in cats.
  • (10) The chi-square results indicated that the peptostreptococcus were significantly related to apical radiolucency and B. melaninogenicus were significantly related to percussion or foul smell.
  • (11) These data demonstrate that fluid percussion injury in the rat reproduces many of the features of head injury observed in other models and species.
  • (12) Facebook Twitter Pinterest SprungDigi crew member creating percussion sounds for MusicMix.
  • (13) The subcutaneous thickening, the tenderness on compression and percussion of the hypothenar eminence or Raynaud's phenomenon of the last fingers should arise the suspicion of this syndrome, which will be confirmed by a positive Allen's test, Doppler examination or digitalized angiography.
  • (14) Bladder percussion produced contraction of the wall of the bladder and this was regularly associated with increased arterial mean and pulse pressures, a decreased heart rate and calf and hand blood flow, and venoconstriction.
  • (15) 10 out of 26 cases of pneumothorax could be suspected by percussion dullness.
  • (16) 31P magnetic resonance spectroscopy was used to determine the intracellular free Mg2+ concentration prior to and following fluid percussion induced traumatic brain injury in rats.
  • (17) This model employs the same fluid percussion device commonly used in in vivo brain injury studies.
  • (18) The fluid percussion device was attached over the right parietal cortex and a moderate (2.0 atm) intensity injury was produced.
  • (19) Neurological examinations revealed that she had facial diplegia, inverted V-shaped mouth, high-arched palate, talipes equinus, percussion myotonia of the tongue, generalized muscular atrophy and weakness, lordosis, areflexia, and congenital cataracta.
  • (20) The visco-elastic properties of a healthy tooth enabling the percussion of the Periotest tapping head to be decelerated in less than 1 ms are largely lost in periodontitis.