(n.) A real or apparent libratory motion, like that of a balance before coming to rest.
Example Sentences:
(1) The simulation reproduces the amplitudes of the fast librational motions of the backbone N-H bonds determined from 15N nuclear magnetic relaxation data, as well as the crystallographic B-factors.
(2) This has provided information on the translational and librational motions of individual groups in the complex.
(3) Above about 52 degrees C cholesterol improves the order by decreasing the amplitude of the librational motions.
(4) In its thermal vibrations, the adenosine molecule behaves as two rigid segments with a torsional libration about the glycosidic bond of 14.4 deg2 at 123 K. The force constant for this libration, as determined from the diffraction data, is 73 (10) J mol-1 deg-2.
(5) In the 1970s, Princeton physicist Gerald K O’Neill envisioned 100,000-person colonies, stationed at what is known as the fifth Lagrangian libration point (L5) in the moon’s orbit – like a gravitational eddy where things stay put by themselves.
(6) The source of the entropic elastomeric force is demonstrated to be the result of internal chain dynamics, and the mechanism is called the librational entropy mechanism of elasticity.
(7) The librational motions are to some extent cooperative.
(8) A translational, librational, and screw analysis of the thermal parameters of endothiapepsin also supports a model in which the two parts can move relative to each other.
(9) Collectively these results suggest that hydrophobic interactions make contributions to elastin entropy at low extensions, but that librational mechanisms make larger contributions to the elastic restoring force at longer extensions.
(10) Many such motions reflect peptide plane librations that result from anticorrelated crankshaft rotations of psi i and phi i+1.
(11) 7 nsec at 40 degrees C) where the band has been assigned to a peptide librational mode.
(12) The amplitude of the base motion, modeled as a fast four-site libration, or diffusion in a cone, increased slightly with higher levels of hydration.
(13) The TLS model has also been applied to the whole protein molecule and shows that the average motion is approximately isotropic with little librational character.
(14) Calculations of the relative statistical weights of these conformations confirm earlier theoretical considerations on the importance of the librational free energy of stable conformations of peptides.
(15) Since the spin-lattice relaxation rate for the active R-state (immobilized) phosphate is similar to that observed in other phosphoenzymes of different size it is suggested that a librational motion on the nanosecond time scale may constitute a common spin-lattice relaxation pathway for phosphates in macromolecules.
(16) The absorption bands of the glycerol ester, phosphoryl, and choline groups were broadened upon hydration, suggesting the activation of the librational or torsional motion.
(17) The similarity of Raman frequencies for B-, A-, C-, and Z-DNA suggests that these modes originate from concerted motions of the bases (librations), which are not strongly dependent upon helix backbone geometry or handedness.
(18) Thus, while the rate of these transitions cannot be quantified, the simulated decay of these correlation functions is completely consistent with the physical picture in which the N-H vectors, in addition to fast librational motion, undergo large amplitude jumps between conformations stabilized by hydrogen bonds.
(19) By analogy this allows for the first assignment of a peptide librational mode in a naturally occurring polypeptide or protein.
(20) The hydrophobic side groups in the protein core show mainly translational motion, with mean-square librations of 20 deg2 which are similar to those found in some close-packed crystals of small organic molecules.
Permanently
Definition:
(adv.) In a permanent manner.
Example Sentences:
(1) tRNA from mutant IB13 lacks 5-methylaminomethyl-2-thio-uridine in vivo due to a permanently nonfunctional methyltransferase.
(2) The diagnosis of anaplastic thyroid cancer, though suspected, was deferred for permanent sections in all cases.
(3) Though the 54-year-old designer made brief returns to the limelight after his fall from grace, designing a one-off collection for Oscar de la Renta last year , his appointment at Margiela marks a more permanent comeback.
(4) The first group was reared in complete darkness while the second one was subjected to permanent noise.
(5) Noise exposure and demographic data applicable to the United States, and procedures for predicting noise-induced permanent threshold shift (NIPTS) and nosocusis, were used to account for some 8.7 dB of the 13.4 dB average difference between the hearing levels at high frequencies for otologically and noise screened versus unscreened male ears; (this average difference is for the average of the hearing levels at 3000, 4000, and 6000 Hz, average for the 10th, 50th, and 90th percentiles, and ages 20-65 years).
(6) Electromagnetic interference presented as inhibition and resetting of the demand circuitry of a ventricular-inhibited temporary external pacemaker in a 70-year-old man undergoing surgical implantation of a permanent bipolar pacemaker generator and lead.
(7) A total of 27 reoperations including eight repeat PRs (5 of which were successful) was required to achieve permanent retinal reattachment.
(8) Thirteen of the dogs treated with various drug regimens lived for 90 days, after which time treatment was stopped; 10 of the dogs eventually rejected the grafts, but three had continued graft function for 6 months or longer and may be permanently tolerant.
(9) This article presents the case of bilateral absent maxillary permanent molars with severe oligodontia and no other abnormalities.
(10) The heretofore "permanently and totally disabled versus able-bodied" principle in welfare reforms is being abbandoned.
(11) Many reports of thyroid stimulating immunoglobulins (TSI) in relation to treatment of Graves' disease have been published and with variable results concerning prediction of permanent remission or relapse after therapy.
(12) Patients with Type 2 and Type 3 failure require permanent transfer to hemodialysis.
(13) Only two aviators were permanently removed from flying duties due to glaucoma.
(14) By parenteral nutrition, antibiotics and permanent paediatric care the authors controlled all complications and after eight and a half months the operated infant could be discharged.
(15) I have to do my best.” The Leeds sporting director Nicola Salerno told the news conference that it was unlikely there would be new permanent signings in the January transfer window, but that there would be the possibility for loan deals.
(16) After loss of permanent central incisors the treatment of choice could be either orthodontic closure or maintenance of the gap for a replacement-prosthetic, autotransplantation or implant.
(17) Thirty-three percent of patients (15 of 45) with MAC required permanent pacemaker implantation after aortic valve replacement, compared with only 10% of patients (3 of 31) without MAC (p less than 0.025).
(18) In lean rats, there were no permanent effects of this intervention except for a 25% reduction in carbohydrate intake.
(19) Perinatal brain damage produced by early zinc deficiency followed by rehabilitation with adequate zinc appears to be long term, maybe permanent.
(20) The process by which prolonged treatment at 2.2 kbar led to permanent activation of UDP-glucuronosyltransferase after release of pressure was not reflected, however, by time-dependent changes in the functional state of UDP-glucuronosyltransferase at this pressure.