What's the difference between sham and shim?

Sham


Definition:

  • (n.) That which deceives expectation; any trick, fraud, or device that deludes and disappoint; a make-believe; delusion; imposture, humbug.
  • (n.) A false front, or removable ornamental covering.
  • (a.) False; counterfeit; pretended; feigned; unreal; as, a sham fight.
  • (v. t.) To trick; to cheat; to deceive or delude with false pretenses.
  • (v. t.) To obtrude by fraud or imposition.
  • (v. t.) To assume the manner and character of; to imitate; to ape; to feign.
  • (v. i.) To make false pretenses; to deceive; to feign; to impose.

Example Sentences:

  • (1) The results indicated that smoke, as opposed to sham puffs, significantly reduced reports of cigarette craving, and local anesthesia significantly blocked this immediate reduction in craving produced by smoke inhalation.
  • (2) Five days later, the animals were randomly assigned to one of four treatment groups: Group 1 received intracranial implantation of controlled-release polymers containing dexamethasone; Group 2 received intraperitoneal implantation of controlled-release polymers containing dexamethasone; Group 3 received serial intraperitoneal injections of dexamethasone; and Group 4 received sham treatment.
  • (3) In contrast sham-hemodialysis in group CA and group PS, respectively, did not result in significant increases in amino acid efflux from the leg implying that the protein catabolic effect of blood membrane contact depends on the chemical properties of dialysis membranes.
  • (4) Meanwhile Ed Miliband, the Labour leader, waiting anxiously for news of the scale of the Labour advance in his first nationwide electoral test, will urge the electorate not to be duped by the promise of a coalition mark 2, predicting sham concessions by the Conservatives .
  • (5) The plasma renin activity of the 1 day post-stenosis rats showed 65% higher activity than the sham controls with no significant change in the 30-60 days post-stenosis.
  • (6) The results indicate that, regardless of the photoperiod, no clear functional relationship can be found between the avian pineal gland and thyroid function, although a transitory increase in T4 levels was seen in both pinealectomized and sham-operated birds shortly after the operations.
  • (7) The amounts of erythropoietin produced in animals subjected to hepatectomy are significantly higher than those observed in sham-operated animals.
  • (8) However, stimulation of the release of NTLI by intraduodenal administration of oleic acid (0.2 ml) resulted in significantly higher p-NTLI levels in the nephrectomized rats than in the sham operated rats.
  • (9) Three groups of male rats received lesions of AP and another 3 groups received sham lesion.
  • (10) Pretreatment with CV6209 had no significant influence on these parameters in sham-operated animals.
  • (11) We found that kidney extracts from 6 h and 24 h uninephrectomized rats increased [3H]thymidine incorporation into tubular cell DNA, dose-dependently, compared to those from sham-operated rats.
  • (12) The sizes of adrenaline (A) and noradrenaline (N) cells in the adrenal medulla of nonoperated (NO), sham-operated (SPX), and pinealectomized (PX) male rats (n = 126) were investigated by quantitative light microscopy.
  • (13) The concentrations and total content of the nicotinamide nucleotides were measured in the livers of rats at various times after partial hepatectomy and laparotomy (sham hepatectomy) and correlated with other events in the regeneration process.
  • (14) The volume densities of the differing strial components from steroid-administered animals were determined to approximate those of sham-adrenalectomized animals in general.
  • (15) With five daily 1-hr occlusions of the hepatic artery, rats benefited from significantly reduced tumor growth rates compared with controls that underwent sham operation (P less than 0.05).
  • (16) In the dynamic phase the weight of interscapular brown adipose tissue was significantly increased in the VMH-lesioned rats, but the specific GDP binding was depressed both in the morning and afternoon when compared with either the sham-operated or PVN-lesioned groups.
  • (17) There were no changes in the joints which had sham operations.
  • (18) In contrast, in Px-SUC both masses were comparable to the sham groups.
  • (19) Only at 3 days did total plasma volume of SAD rats show a modest reduction of about 16% (P less than 0.05 vs. sham-operated plus unoperated controls).
  • (20) The binding of 125I-labeled epidermal growth factor (EGF) was compared in acini isolated from the regenerating remnant following 90% partial pancreatectomy (ppx) and from the pancreas of sham-pancreatectomized (sham-ppx) rats.

Shim


Definition:

  • (n.) A kind of shallow plow used in tillage to break the ground, and clear it of weeds.
  • (n.) A thin piece of metal placed between two parts to make a fit.

Example Sentences:

  • (1) The model contains 13 parameters that can be varied, 12 shim coil currents, and the receiver mixer frequency.
  • (2) The derivatized bile acids were separated stepwise on a Shim-pack CLC-ODS column using acetonitrilemethanol-water (100:50:30) (A), (100:50:20) (B), and (100:50:0) (C) as mobile phases with changing automatically from A to C using a solvent changer.
  • (3) For this purpose, a method of automatic shimming was developed and tested on phantoms and volunteers.
  • (4) This probe design tunes to 23-Sodium for rapid shimming and then, to 31-Phosphorus for measurements of pH and high energy phosphate metabolites.
  • (5) Voxels may be shimmed using only first-order X, Y, and Z shims to produce three-dimensional shim current maps, thus avoiding shim coupling problems.
  • (6) A novel latent proteinase of which activity was induced by heating in the presence of NaCl was purified to homogeneity from threadfin-bream muscle by a combination of DEAE-cellulose, Con A-Sepharose, Arg-Sepharose, and Shim-pack HAC chromatographies.
  • (7) Our localization strategy also allows us to shim easily on the well-defined volume of interest and leads to high-resolution spectra that exhibit multiplet structure.
  • (8) A complete shimming process generally requires only 80 transients.
  • (9) A data link to the shim power supply allows automatic update of currents.
  • (10) Addition of CO2 to the oxygen and appropriate changes in gas flow and "shim" pressure permit changes to be made in the ventilation of the device during perfusion to achieve desired levels of PaO2 and PaCO2 under widely disparate conditions of temperature and flow.
  • (11) We recently described the identification of BOS1 (Newman, A., J. Shim, and S. Ferro-Novick.
  • (12) However, despite our monitoring of additional variables, including shim and inlet pressure and recirculation flow, gas exchange abnormalities were encountered in 5 patients on whom the membrane oxygenator was used; in 4 of these cases the abnormalities were encountered prior to our recognition of the potential for occasional internal shunting with this device.
  • (13) The thickness of the blood film is decreased by increasing the "shim" pressure, so that increasing the "shim" presure results in higher PaO2.
  • (14) The chromatographic conditions were as follows: column: Shim-pack CLC-ODS; mobile phase: methanol-water (70:30).
  • (15) In addition to the main magnet important additions like gradient and shim coils, aspects of site planning and future problems are discussed.
  • (16) An acid sialidase [EC 3.2.1.18] has been purified from human placenta by means of successive procedures including extraction, Con A-Sepharose adsorption, ammonium sulfate precipitation, activation, p-aminophenyl thio-beta-D-galactoside-CH-Sepharose (PATG-Sepharose) affinity chromatography and high-performance liquid chromatography on a Shim pack Diol 300 column.
  • (17) The resolution and homogeneity limitations of echo-planar imaging (EPI) are overcome by zoom imaging of an easily shimmed localized volume.
  • (18) This high failure rate has led the authors to reevaluate the use of prosthetic shims or wedges in large fragment defects but to continue to use bone grafting for smaller, circumscribed defects.
  • (19) A sialidase [EC 3.2.1.18] has been partially purified from human placenta by means of procedures comprising Con A-Sepharose adsorption, ammonium sulfate precipitation, sucrose density gradient centrifugation, and high-pressure liquid chromatography on a Shim pack Diol 300 column.
  • (20) We have developed a pulse sequence which enables fast and accurate measurement of three-dimensional field maps in vivo, and a data analysis package that allows calculation of shim currents to optimally shim arbitrary selected volumes.