What's the difference between performer and role?

Performer


Definition:

  • (n.) One who performs, accomplishes, or fulfills; as, a good promiser, but a bad performer; especially, one who shows skill and training in any art; as, a performer of the drama; a performer on the harp.

Example Sentences:

  • (1) From 1982 to 1989, bronchoplasty or segmental bronchoplasty and pulmonary arterioplasty in combination with lobectomy and segmentectomy were performed for 9 patients with central type lung carcinoma.
  • (2) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (3) These data indicate a steady improvement in laboratory performance over the last 10 years.
  • (4) In conclusion, the efficacy of free tissue transfer in the treatment of osteomyelitis is geared mainly at enabling the surgeon to perform a wide radical debridement of infected and nonviable soft tissue and bone.
  • (5) This paper discusses the typical echocardiographic patterns of a variety of important conditions concerning the mitral valve, the left ventricle, the interatrial and interventricular septum as well as the influence of respiration on the performance of echocardiograms.
  • (6) After two weeks all animals were killed and autopsies of the animals were performed.
  • (7) The 1989 results were compared with those of a similar survey performed in 1986.
  • (8) During the performance of propulsive waves of the oesophagus the implanted vagus nerve caused clonic to tetanic contractions of the sternohyoid muscle, thus proving the oesophagomotor genesis of the reinnervating nerve fibres.
  • (9) Theoretical computations are performed of the intercalative binding of the neocarzinostatin chromophore (NCS) with the double-stranded oligonucleotides d(CGCG)2, d(GCGC)2, d(TATA)2 and d(ATAT)2.
  • (10) In addition autoradiography was performed to localize labelled cells in the inner ear.
  • (11) Surgical repair of the rheumatologic should however, is performed rarely, and should be reserved for the infrequent cases that do not respond to medical therapy.
  • (12) Six hours later, bronchoalveolar lavage was performed.
  • (13) Basing the prediction of student performance in medical school on intellective-cognitive abilities alone has proved to be more pertinent to academic achievement than to clinical practice.
  • (14) It has also been used to measure the amount of excision repair performed by non-replicating cells damaged by carcinogens.
  • (15) The performance characteristics of the CCD are well documented and understood, having been quantified by many experimenters, especially in the physical sciences.
  • (16) 2.35pm: West Ham co-owner David Sullivan has admitted that a deal to land Miroslav Klose is unlikely to go through following the striker's star performances in South Africa.
  • (17) Just after blood sampling, FEV1 measurements were performed.
  • (18) Effects of habitual variations in napping on psychomotor performance, short-term memory and subjective states were investigated.
  • (19) The study examined the sustained effects of methylphenidate on reading performance in a sample of 42 boys, aged 8 to 11, with attention deficit-hyperactivity disorder (ADHD).
  • (20) In addition, control experiments with naloxone, ethanol, or cigarette smoking alone were performed.

Role


Definition:

  • (n.) A part, or character, performed by an actor in a drama; hence, a part of function taken or assumed by any one; as, he has now taken the role of philanthropist.

Example Sentences:

  • (1) The role of the family practitioner in antenatal care is discussed.
  • (2) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
  • (3) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
  • (4) In this study, the role of psychological make-up was assessed as a risk factor in the etiology of vasospasm in variant angina (VA) using the Cornell Medical Index (CMI).
  • (5) The role of Ca2+ in cell agglutination may be either to activate the cell-surface dextran receptor or to form specific intercellular Ca2+ bridges.
  • (6) The role of whole Mycobacteria, mycobacterial cell walls and waxes D as immunostimulants was well established many years ago.
  • (7) We have investigated a physiological role of endogenous insulin on exocrine pancreatic secretion stimulated by a liquid meal as well as exogenous secretin and cholecystokinin octapeptide (CCK-8) in conscious rats.
  • (8) The data indicate that ebselen is likely to be useful in the therapy of inflammatory conditions in which reactive oxygen species, such as peroxides, play an aetiological role.
  • (9) We have examined the insertion of bovine 17 alpha-hydroxylase (P45017 alpha) into the endoplasmic reticulum of COS 1 cells to evaluate the functional role of its hydrophobic amino-terminal sequence and membrane insertion.
  • (10) Although solely nociresponsive neurons are clearly likely to fill a role in the processing and signalling of pain in the conscious central nervous system, the way in which such useful specificity could be conveyed by multireceptive neurons is difficult to appreciate.
  • (11) gamma-Aminobutyric acid (GABA) and glutamate release from the treated side was higher than the control value during the first 2-3 h, a result indicating an important role of glial cells in the inactivation of released transmitter.
  • (12) Although antihistamines are widely used for symptomatic treatment of seasonal (allergic) rhinitis, the role of histamines in the pathogenesis of infectious rhinitis is not clear.
  • (13) Because many wnt genes are also expressed in the lung, we have examined whether the wnt family member wnt-2 (irp) plays a role in lung development.
  • (14) As prolongation of the action potential by TEA facilitates preferentially the hormone release evoked by low (ineffective) frequencies, it is suggested that a frequency-dependent broadening of action potentials which reportedly occurs on neurosecretory neurones may play an important role in the frequency-dependent facilitation of hormone release from the rat neurohypophysis.
  • (15) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
  • (16) A possible role for mitochondria in myocardial adenosine production is discussed.
  • (17) Further studies are required to elucidate specific roles of the steroid-induced proteins in the effects of glucocorticoids on HTM and HS cells.
  • (18) To clarify the functional roles of His40, Glu58, and His92, we analyzed the consequences of several amino acid substitutions (His40Ala, His40Lys, His40Asp, Glu58Ala, Glu58Gln, and His92Gln) on the kinetics of GpC transesterification.
  • (19) The manufacturers, British Aerospace describe it as a "single-seat, radar equipped, lightweight, multi-role combat aircraft, providing comprehensive air defence and ground attack capability".
  • (20) The presently available data allow us to draw the following conclusions: 1) G proteins play a mediatory role in the transmission of the signal(s) generated upon receptor occupancy that leads to the observed cytoskeletal changes.