(n.) Equality of weight or force; an equipoise or a state of rest produced by the mutual counteraction of two or more forces.
(n.) A level position; a just poise or balance in respect to an object, so that it remains firm; equipoise; as, to preserve the equilibrium of the body.
(n.) A balancing of the mind between motives or reasons, with consequent indecision and doubt.
Example Sentences:
(1) In contrast with oligodendrocytes, [Cl-]i in astrocytes is significantly increased (from 20 to 40 mM) above the equilibrium distribution owing to the activity of an inward directed Cl- pump; this suggests a different mechanism of K+ uptake in these cells.
(2) Although the brain AP50 is prominently phosphorylated by an endogenous protein kinase in isolated coated vesicle preparations, the neuronal AP50 was not detectably phosphorylated in intact cells as assessed by two-dimensional non-equilibrium pH gradient gel electrophoresis of labeled cells dissolved directly in SDS-containing buffers.
(3) Fibroblasts from WHHL rabbits bound little, if any, human LDL, an apo B-containing lipoprotein, in 4 degrees C equilibrium binding experiments.
(4) Analysis of the product by equilibrium density centrifugation and processive hydrolysis with snake venom phosphodiesterase suggested that the noncomplementary nucleotides were present in phosphodiester linkage.
(5) It is shown that, by comparison of a reacting mixture at chemical equilibrium with a non-reacting but equally composed one, the sum of the mean concentrations of the reaction products can immediately be taken from optical absorption or from interferometric measurements.
(6) Equilibrium and kinetic studies of the interaction of gene 32 protein of T4 phage with single-stranded fd DNA were performed monitoring the changes in protein fluorescence.
(7) Equilibrium and kinetic aspects of the binding of several proteins to N-(3-carboxypropionyl)aminodecyl-Sepharose, an amphiphilic ampholytic adsorbent, were studied at 22 degrees C, pH 7.0, I 0.10--0.12.
(8) Ceftriaxone, a cephalosporin, is bound reversibly to defatted human serum albumin from adults, with a first stoichiometric binding constant of 60,000 M-1, as found by equilibrium dialysis at pH 7.4, 37 degrees.
(9) In addition, a redistribution of cellular controls of the host reaction to parasites may act as a complementary mechanism for establishment of the viable equilibrium between host and parasite.
(10) In addition, although aspirin does transfer the acetyl group to hemoglobin both in vitro and in vivo, in our experiments the reaction does not result in any alteration in the oxygen equilibrium of either intact erythrocytes or hemoglobin in solution.
(11) administration the time for distribution in the body amounted to 8 h. The extrapolated initial concentrations in the equilibrium to distribution amounted to 0.68% of the administered dose in the plasma volume, and the theoretical volume of distribution was 5 times the body volume.
(12) This conception of the city as an expression of both regal power and social order, guided by cosmological principles and the pursuit of yin-yang equilibrium, was unlike anything in the western tradition.
(13) A molecular weight of 51,500 was determined from sodium dodecyl sulfate polyacrylamide gel electrophoresis, while sedimentation equilibrium ultracentrifugation gave a value of 49,500.
(14) Due to the higher stability constant, of MgCDTA, as compared to MgEDTA, addition of CDTA to a medium containing free Mg2+ and MgEDTA will not only chelate the free Mg2+, but it will also shift the equilibrium from MgEDTA towards MgCDTA, i.e.
(15) At alkaline pH, the Schiff's base equilibrium can be continuously and specifically displaced by reduction in situ with sodium cyanohydridoborate, which on the other hand leaves intact the reacting aldehyde groups of oxidized tRNA.
(16) Scatchard analysis of equilibrium 125I-HA binding to permeabilized hepatocytes in suspension at 4 degrees C indicates a Kd = 1.8 x 10(-7) M and 1.3 x 10(6) molecules of HA (Mr approximately 30,000) bound per cell at saturation.
(17) If the PET measurement is commenced prior to arteriovenous equilibrium, significant errors occur in calculated CBV.
(18) Cells were labeled with [3H]AA for 3 h, followed by a 20-h equilibrium period, then exposed to 10(-8) M PTH for different time periods ranging from 2-60 min.
(19) The equilibrium binding constants for the binary complex formation of eIF-4E-eIF-4A, m7GpppG-eIF-4E, m7GpppG-eIF-4F, globin mRNA-eIF-4E, globin mRNA-eIF-4F, and globin mRNA-eIF-4A were measured by direct fluorescence titration experiments.
(20) To validate the repeated use of radionuclide equilibrium angiography for determining left ventricular (LV) ejection fraction (EF) and end-diastolic and end-systolic volumes (EDV and ESV), 25 patients were studied on an hourly basis an average of 9.1 days after acute myocardial infarction.
Instability
Definition:
(n.) The quality or condition of being unstable; want of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness; as, the instability of a building.
(n.) Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness; as, instability of character, temper, custom, etc.
Example Sentences:
(1) (4) Despite the removal of the cruciate ligaments and capsulo-ligamentous slide, no significant residual instability was found in either plane.
(2) By measurement and analysis of the changes in carpal angles and joint spaces, carpal instability was discovered in 41 fractures, an incidence of 30.6%.
(3) Unrecognized flexion injuries of the cervical spine may lead to late instability and neurologic damage.
(4) Hypermobility and instability following injury and degenerative joint disease is poorly understood and often not recognized as the cause of the patients symptoms.
(5) In these three patients, laxity of the knee in flexion was so severe that posterior instability could not be corrected merely by patellar relocation.
(6) Cubitus valgus or instability due to a pseudarthrosis of the lateral epicondyle or to ligamentous injury may stretch the nerve.
(7) The hypothesis that this instability would lead to more errors and longer decision times for distinguishing left-right mirror-image figures was not supported.
(8) 93 knees in 74 patients between 9 and 20 years of age were operated because of patello-femoral instability.
(9) Whereas in flexion stress all methods showed a sufficient stability, the rotation tests proved, that in case of a dorsal instability of the lower cervical spine, posterior interlaminar wiring or anterior plate stabilization showed no reliable stabilization effect.
(10) There is a paucity of informative data on the potentially important role of specific sites of chromosomal instability in oncogenic processes.
(11) "In-gel renaturation" analysis did not show any DNA amplification of high degree in AT22IJE-T. Cytogenetic analysis showed considerable chromosomal instability in the new cell line, and medium conditioned by these cells contained the clastogenic activity which is characteristic of the parental strain as well.
(12) Instability or a return to violence could follow the imposition of measures that would threaten the ability of the PA to govern in the West Bank.
(13) This approach was used in 42 shoulders with rotator cuff tears or posterior instability without complications of infection, failure of deltoid healing, or compromise of suprascapular or axillary nerves.
(14) Sixteen patients who remained wet had detrusor instability; 9 of these were cured by anticholinergic medications.
(15) Atlantoaxial instability, defined as a gap of over 4 mm, was present in seven (10%) children and two (2%) adults.
(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) Midcarpal instability occurs at the triquetral-hamate joint and is characterized by a dynamic subluxation of the joint.
(18) Structural instability of pZG1 could therefore be due at least in part to the presence of single-stranded DNA.
(19) Oxidative stress is now shown to occur in BS cells and may be responsible for the observed chromosomal instability.
(20) It is therefore unlikely that the tyrosinylation status directly affects the intrinsic stability of assembled microtubules since the rate of length redistribution is both a sensitive assay and a function of the kinetic parameters governing dynamic instability.