What's the difference between subtraction and traction?

Subtraction


Definition:

  • (n.) The act or operation of subtracting or taking away a part.
  • (n.) The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.
  • (n.) The withdrawing or withholding from a person of some right to which he is entitled by law.

Example Sentences:

  • (1) Thus, 10 degrees should be subtracted from the ultrasound values in order to obtain the real AV angles.
  • (2) The signals were processed digitally using three different algorithms: 1) simple linear regression (LR); 2) linear regression with drift correction achieved by adding to, or subtracting from the plethysmographic signal a term proportional to time (LRC); 3) Fourier analysis (FFT).
  • (3) During bilateral displacements, the activity induced by the respective contralateral leg is linearly summed or subtracted, depending on whether the legs are displaced in the same or in opposite directions.
  • (4) All MR images were compared with findings of chest X-ray, CT and IVDSA (intravenous digital subtraction angiography) as appropriate.
  • (5) Binaural difference waves (BDWs), obtained by subtracting the sum of two monaural BAEPs from a binaural BAEP, were obtained in 16- to 20-day-old jaundiced Gunn rats before and after injection of sulfadimethoxine, which produces bilirubin neurotoxicity by promoting net transfer of bilirubin out of the circulation into brain tissue.
  • (6) Aggressive responding was maintained by contingent presentation of periods free of point subtractions, i.e., provocations.
  • (7) The diagnosis of this rare anomaly was facilitated by the use of digital subtraction aortography and allowed selective angiography of the artery with an appropriately shaped catheter.
  • (8) Intraarterial digital subtraction angiography (DSA) was performed to evaluate graft patency in 45 patients undergoing coronary artery bypass grafting with the use of internal mammary artery (IMA).
  • (9) We studied how much blue, green, or red light had to be added to or subtracted from white to obtain veridical hue perception (blue, green, red, or their complementary colours) at various locations in the temporal visual field.
  • (10) For each patient, the BSM and the QRS integral map before, during, and after the inflation was compared by subtraction of recordings "during-minus-before" inflation and "before-minus-after" inflation.
  • (11) Aneurysm of the hepatic artery, causing obstruction of the common bile duct, was definitely diagnosed preoperatively by subtraction angiography, combined with percutaneous transhepatic cholangiography.
  • (12) One problem required addition; the other subtraction.
  • (13) Eight complementary DNA (cDNA) clones highly expressed in fetal rat stomach but not in normal adult rat stomach were isolated after screening 2 x 10(4) independent recombinants from a subtracted cDNA library.
  • (14) In nine cases, MR angiographic findings were verified with digital subtraction angiography or conventional angiography.
  • (15) The various definitions of "efficiency" and "economy" are considered at the whole body and the isolated muscle level, and a discussion of baseline subtraction is presented.
  • (16) The voltage-dependent Na+, K+ and Ca2+ currents (INa, IK and ICa) were separated by the use of ion subtraction and pharmacological treatments.
  • (17) They could be improved by subtraction of the vascular images obtained after injection of 99m-technetium serum albumin.
  • (18) Single digital subtraction angiography showed bilateral occlusion, predominantly on the left side of the supraclinoid portion of the interna carotid arteries with formation of collateral circulation in the diencephalic territory.
  • (19) In this pilot study, a blood pool subtraction technique, which makes it possible to visualize MI 6 h postinjection, is validated.
  • (20) To determine the optimal time for recording left ventricular angiograms during atrial pacing stress tests, digital subtraction left ventriculograms were obtained using 12 ml of contrast material in 40 patients at rest and at peak pacing.

Traction


Definition:

  • (n.) The act of drawing, or the state of being drawn; as, the traction of a muscle.
  • (n.) Specifically, the act of drawing a body along a plane by motive power, as the drawing of a carriage by men or horses, the towing of a boat by a tug.
  • (n.) Attraction; a drawing toward.
  • (n.) The adhesive friction of a wheel on a rail, a rope on a pulley, or the like.

Example Sentences:

  • (1) After 3-5 days of side-arm traction, swelling had usually diminished sufficiently to allow the elbow to be safely hyperflexed to stabilize the fracture after elective closed reduction.
  • (2) The effects exerted on the cervical spine by a traction of 150 N was studied by means of an improved radiographic technique.
  • (3) The tractional resistance carried out on the laminate fronts where a treatment of only silane and resin of connection was applied, was greater where the treatment of silane was employed.
  • (4) Although the entire cohort of neck patients, regardless of group assignment, improved significantly on all the outcome variables over the 6-week period, patients receiving intermittent traction performed significantly better than those assigned to the no traction group in terms of pain (P = 0.03), forward flexion (P = 0.01), right rotation (P = 0.004) and left rotation (P = 0.05).
  • (5) In a group of 35 patients with cervical painful syndromes due to degenerative changes the authors applied traction treatment together with pharmacological agents.
  • (6) To avoid the complications attributable to the cervical spine, we recommend roentgenographic examination in all neurofibromatosis patients who are about to have general anesthesia or skull traction for treatment of scoliosis.
  • (7) Traction spurs with segmental hypermobility were found more commonly at the L4-5 level in patients whose spines were not fused, particularly women.
  • (8) Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth.
  • (9) Kirschner improved the wire traction procedure decisevely.
  • (10) The pair arrived back in the office shortly before 6pm, as reports that the incident was a terrorist attack began to gain traction.
  • (11) The procedure consists of a Kirschner wire used as the means of traction on the remaining soft tissue of the lower lip, using the upper teeth or pyriform aperture bone as remote fixed points for tissue traction.
  • (12) Normal neck-shaft angle accounted to 53.1% in the traction group.
  • (13) Most arteries follow a straight course because they are stretched by longitudinal traction.
  • (14) Postoperatively, the patient is placed in traction for a time and then is allowed to walk with non-weight-bearing.
  • (15) It was also recorded that patients with edematous fibroplastic process in the central zone accompanied by vitreoretinal tractions often develop equatorial dystrophies, this being a risk factor of retinal detachment.
  • (16) Peroneal nerve traction does not result in abnormalities of the dorsalis pedis pulse, pain on passive muscle stretch or a tense anterior tibial compartment.
  • (17) It is concluded that the coefficient of limiting friction obtained during full-sole contact with the floor is a suitable means of distinguishing between tractional qualities of shoes.
  • (18) Patients with a femoral neck fracture often undergo skeletal traction until surgery.
  • (19) Retinal traction can be counteracted by the oil up to a calculated threshold value, depending on the size and shape of the tear, the strength of the surface tension and, most importantly, the distance between the retina and choroid.
  • (20) An area of translucence around a dense zone, appearing more clearly with traction, is suspicious.