What's the difference between imperturbable and perturb?

Imperturbable


Definition:

Example Sentences:

  • (1) The system shows almost complete imperturbability to moisture.
  • (2) MAC correlated with musculoskeletal complaints (-.29, p less than .05), eye complaints (-.36, p less than .05), personal activity (.38, p less than .05), personality dimensions: "Imperturbability" (.41, p less than .01), "Wellbeing" (.31, p less than .05), "Traditionalism" (-.45, p less than .01) and "Psychophysic constitution" (all evaluated by questionnaires), a body weight index (-.51, p less than .01) and systolic blood pressure after performance (-.51, p less than .01).
  • (3) Rolling sheets of ice particles were scouring the road, while the midday sky remained an imperturbable blue.
  • (4) That causes a clash between contradictory impulses: unruly urge for freedom and independence on the one hand, and insatiable yearning for harmonic community, that means, for imperturbable warm-hearted human relations on the other.
  • (5) It enraged this normally imperturbable competitor that the chair umpire refused to overrule the call and his anger got the better of him when he belted a forehand into the tape to give Murray the serve for a two-set lead.
  • (6) Obama, usually imperturbable in public, said he had not been "on vacation" and was busy with the economic crisis and two wars.
  • (7) The delightful-sounding writing partnership between the gum-chewing, slang-slinging, jodhpurs- and baseball cap-clad Wilder and the imperturbable East Coast brahmin Charles Brackett seemed like the ideal creative combination of accelerator and brake pedals.
  • (8) In this time, I saw Graham as diligent writer, movie star, alcoholic, activist and ultimately imperturbable, impenetrable human being.
  • (9) Once when an engine in a plane he was flying in caught fire, he was imperturbable.
  • (10) The best guarantees to avoid "dis-stress" as well as psychic stress-disorders are changing of attitude of life, compensation of overstrain by sensible recreational activities, going in for sport, engagement for human and social environmental factors as well as a harmonic family-life and a conception of life in the sense of imperturbability and tolerance.
  • (11) The kidnappers' demands were ably investigated by the bride, imperturbable in ivory satin, though the list of suspects (a brisk resumé of all the Braithwaites' aggrieved lovers) made her reconsider matrimony.
  • (12) His whole political position, in his own country and to an extent in the world, is based on projecting an image of being brilliantly and imperturbably on top of things.
  • (13) Despite living through extraordinary circumstances – a self-made man, he married a sometime chorus-girl, spent time with Hollywood movie stars, endured Nazi internment and journalistic accusations of treason – he still kept up the appearance of imperturbable "normality".
  • (14) Happily she is imperturbable – a "cool cat", as Louis Smith has it.
  • (15) The Social Imperturbability PD subscale was related inversely to trait anxiety.
  • (16) High and low levels of assault were best differentiated by Ma3 (Imperturbability), Scale 5 (Masculinity-Femininity), and Pa2 (Poignancy).
  • (17) Or does Osborne try to mimic Howe’s imperturbability in his pursuit of a swaggering Britain-as-hedge fund, a country ruled by the swift buck?
  • (18) After the Bin Laden raid the normally imperturbable army chief, General Ashfaq Kayani, held town-hall meetings on three bases.
  • (19) Journalism's loss, I fear.... More here: Janet Yellen's High School Friends Remember Her As Interested In Everything And Imperturbable Joseph Weisenthal (@TheStalwart) ALSO: Exclusive photos of Janet Yellen in high school.
  • (20) Once again I'm struck by the proximity and the imperturbable sang-froid of the big beasts.

Perturb


Definition:

  • (v. t.) To disturb; to agitate; to vex; to trouble; to disquiet.
  • (v. t.) To disorder; to confuse.

Example Sentences:

  • (1) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
  • (2) Ultraviolet difference spectrophotometry indicates that the inactivated enzyme retains its capacity for binding the nucleotide substrates whereas the spectral perturbation characteristic of 3-phosphoglycerate binding is abolished in the modified enzyme.
  • (3) It is suggested that laboratory experiments should be performed on perturbed systems only if simulations have shown that the methods of data analysis will be satisfactorily powerful and accurate.
  • (4) Thresholds were measured for detecting perturbations in a regular lattice of dots by modulating local dot density, local dot luminance, or some combination of the two.
  • (5) It is shown that when a constant current is applied such that a stable equilibrium and rhythmic firing are present, the following predictions are inherent in the HH system of equations: (a) Small instantaneous voltage perturbations to the axon given at points along its firing spike result in phase resetting curves (when new phase versus old phase is plotted) with an average slope of 1.
  • (6) Lower lip perturbation duration was manipulated to yield two different load conditions.
  • (7) The role of the Golgi complex in the post-translational oligosaccharide maturation of alpha-amylase was explored by use of the carboxylic ionophore, monensin (10(-7)M), a known perturbant of the structure and function of the Golgi complex.
  • (8) The importance of the ionic interaction due to the formation of the salt bridge between the Asp-27 and the pteridine ring in Escherichia coli dihydrofolate reductase-methotrexate complex has been studied by using the free-energy perturbation method.
  • (9) Presence of the monosynaptic reflex during platform perturbations at normal latencies suggests that balance problems in children with Down syndrome do not result from hypotonia, which researchers have defined as decreased segmental motoneuron pool excitability and pathology of stretch reflex mechanisms, but rather result from defects within higher level postural mechanisms.
  • (10) We have perturbed the dynamics of the nuclear lamins by means of cell fusion between mitotic and interphase cells and have studied redistribution of lamins in fused cells as a function of extracellular pH levels.
  • (11) In the coagulating gland, this compensatory response involved the proliferation of many cells which, in the absence of cytotoxic perturbation, would be non-proliferatie (Q cells).
  • (12) The effect of initial perturbation of the thrombus by a guide wire appears to be less important than the thrombus disruption and accelerated thrombolysis caused by the pulsatile delivery system.
  • (13) As before, subjects were instructed to either oppose the perturbation (Predictable Oppose) or relax the forearm muscles (Predictable Let-Go).
  • (14) Bivalent cations (Ca2+, UO2(2+) or Zn2+) in the subphase at pH 5.6 significantly modified the behaviour of mixed monolayers of fusogenic lipids with phospholipids; there was a parallel perturbing effect of fusogenic lipids on interactions between monolayers of phospholipids and bivalent cations.
  • (15) In particular, nitration of Tyr-51 provoked a structural perturbation in the globular region.
  • (16) Altering the biophysical characteristics of cell membranes by diet and membrane perturbing agents markedly influences thermosensitivity of cells.
  • (17) Paraphilias (PAs) and non-paraphilic sexual addictions (NPSAs) may be behaviors that share a common perturbation of central serotonin neuroregulation as a component of their pathophysiology.
  • (18) Two functions of these have been proposed: 1) that they are compatible osmolytes which regulate cell volume (against high external NaCl) without inhibiting proteins and 2) that methylamines (GPC and betaine) are counteracting osmolytes which stabilize proteins against perturbation from high renal urea.
  • (19) This high incidence of HER2 gene amplification with accompanying overexpression in non-invasive breast tumors suggests that perturbations of the HER2 oncogene are among the earliest and most common genetic lesions in human breast cancer.
  • (20) Hypophysectomy was selected as a model system for perturbing testicular cell types, since the cytological sequelae of this treatment post-hypophysectomy in the rat are well documented in the literature.