What's the difference between extraneous and unnecessary?

Extraneous


Definition:

  • (a.) Not belonging to, or dependent upon, a thing; without or beyond a thing; not essential or intrinsic; foreign; as, to separate gold from extraneous matter.

Example Sentences:

  • (1) To evaluate threshold estimates under these conditions, computer simulations of experiments with small numbers of trials were performed by using psychometric functions based on a model of two types of noise: stimulus-related noise (affecting slope) and extraneous noise (affecting upper asymptote).
  • (2) Decisions concerning appropriate treatment are often made by patients, attorneys, the disability determination system, employers, and judges for extraneous reasons, which include financial gain or personal bias and often reflect lack of current information.
  • (3) In Experiment 1, subjects exposed to a sound representing their heartbeat made greater self-attributions for hypothetical outcomes than did subjects exposed to the same sound identified as an extraneous noise.
  • (4) A simple method of affinity purification, using antigen bound to nitrocellulose, is employed to remove the reactivity with these extraneous bands from immune sera.
  • (5) An inverse Fourier transform is then used to recreate the new time domain representation, which has been appropriately filtered for extraneous noise.
  • (6) He cites the shockingly ugly examples of "predict" and "extraneous".
  • (7) The chelating approach provides a powerful means for removing a single class of unwanted, random crosslinkages, i.e., those due to extraneous polyvalent metals such as lead, cadmium and aluminum.
  • (8) The results indicated that FF procedures are easily detected; therefore, difference found between the FF and CF groups may be influenced by extraneous variables.
  • (9) Phoneme identification responses collected in the same experiments, as well as informal observations about the quality of the restored phoneme, suggested that restoration of a fricative phone distinct from the extraneous noise did not occur; rather, the spectrum of the extraneous noise itself influenced phoneme identification.
  • (10) The surface activity of the normally surface-active subtypes, when purified free of extraneous material, was close to those of normal controls.
  • (11) Using buffalo serum, first extraneous proteins were precipitated by making the serum 2.26 M saturated with ammonium sulphate at pH 7.0 and then albumin was precipitated from the supernatant at 1.9 M ammonium sulphate concentration at pH 4.2.
  • (12) Histologically and histochemically, a total denervation state was observed in the aganglionic segment, in contrast to findings in narrow segments of Hirschsprung's disease, in which intramural extraneous nerves are known to be increased.
  • (13) The trapped [beta-32P]NANDP X SF1 complex, like the comparable ADP X SF1 complex, was stable for days at 0 degree C and could be purified free of extraneous analogue by ammonium sulfate precipitation and gel filtration.
  • (14) As with the plant ferredoxins the adrenodoxin for these measurements was enriched with (57)Fe by reconstitution of the apo-protein, and subsequently was carefully purified and checked by a number of methods to ensure that it was in the same conformation as the native protein and contained no extraneous iron.
  • (15) The results showed that quality of care seemed to be related more to the orientation and perception of the ward sister than to any number of extraneous variables such as medical and paramedical input, ward facilities and ancillary staff support.
  • (16) Signal is useful variability, potentially relatable to explanatory variables, and noise is extraneous.
  • (17) In particular, studies are needed that employ prospective designs and that deliberately measure or control for the extraneous prognostic variables that may affect adjustment.
  • (18) Then by "phase-switching" on the same cartridge, 1,25(OH)2D is sufficiently resolved from other vitamin D metabolites and extraneous lipophilic compounds to allow its quantification by radioreceptor assay according to an established procedure.
  • (19) The percentage distributions obtained from the CDC data have been adjested to remove the influence of extraneous year-to-year changes in the data.
  • (20) The endogenous mono- and bipolar subtypes of major depressive disorders showed intimate connections between the various neuroendocrine functional systems and the above mentioned extraneous factors resulting in a narrowed variability and a stronger coupling in the reactivity of these hormonal functional systems, a condition which can be seen as analogous to experimental results at the psychophysiological level in these nuclear groups of depressed patients, whose psychopathological state is also characterized by similar limitations in their "degree of freedom" (Heimann).

Unnecessary


Definition:

Example Sentences:

  • (1) The results of the evaluation confirm that most problems seen by first level medical personnel in developing countries are simple, repetitive, and treatable at home or by a paramedical worker with a few safe, essential drugs, thus avoiding unnecessary visits to a doctor.
  • (2) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
  • (3) This may result in the unnecessary implementation of antidotal therapy.
  • (4) Thus, the enzyme-immunoassay shows specificity and sensitivity comparable to radioimmunoassay making use of radioactive tracer unnecessary.
  • (5) It is important to be aware of the histological characteristics of this essentially benign condition so that unnecessary radical therapies can be avoided.
  • (6) However, patients can be taught how to retard the onset of wrinkles by avoiding unprotected sun exposure, unnecessary facial movements, and certain sleeping positions.
  • (7) It is unnecessary to make any special more complicated incision designed to avoid lymphatics.
  • (8) In these cases, a thyroid scintiscan may avoid an unnecessary surgical intervention.
  • (9) The differentiation between the various modes of involvement is essential as some of them may be confused with recurrence and the clinician might resort to unnecessary drastic measures like enucleation.
  • (10) Check out the latest bill from Russia's parliament, the Duma: its aim is to ban the "unnecessary" usage of foreign words (in cases where there is a pre-existing Russian counterpart).
  • (11) Standard additions are unnecessary; Pt concentrations are read from a calibration chart of peak heights, which is linear up to 1.6 mg per liter.
  • (12) We encountered terrorists who wanted to kill us and we did everything we could to prevent unnecessary injury."
  • (13) Thus, modification in the dosage regimen of digoxin may be unnecessary in the case of coadministration with captopril.
  • (14) Only CT-guided or direct parasternal biopsy including immunhistochemistry can yield a reliable preoperative diagnosis and prevent unnecessary operation of lymphomas.
  • (15) The sonographic method, with a 97.7% specificity and a negative predictive value of 89.5%, proved to be specific enough to eliminate the necessity of routine catheterization for measuring residual bladder volumes of greater than or equal to 150 cm3, thus decreasing the incidence of some major postoperative complications that can occur due to unnecessary catheterization.
  • (16) With these scores we expect to facilitate the diagnostic screening, to indicate the way of therapy and to avoid unnecessary surgery for urinary incontinence in cases of motor-urge-incontinence (detrusor instability, unstable bladder), as long as a urodynamic examination is not feasible on every incontinent women.
  • (17) In some cases this has led to the misdiagnosis of mediastinal pathology and an unnecessary thoracotomy.
  • (18) No abdominal injuries were present in the group in whom the lavage results were negative, while no unnecessary laparotomies were performed in the group with a 4+ or 5+ positive DPL (calorimetric method).
  • (19) It would thus appear that repetition of the hCG injection at intervals of less than 4 days is unnecessary, and that a total stimulation period of 2-3 weeks is sufficient.
  • (20) The importance of ECG studies in these cases is stressed in order to establish the differential diagnosis and avoid unnecessary delays in the application of the proper therapy.