(a.) Having two plane faces; as, the dihedral summit of a crystal.
Example Sentences:
(1) These variants, which yielded a robust illusion, included dihedral angles in place of the arrowheads of the classical pattern.
(2) Time histories of the dihedral angles and residue-residue cross-strand distances are used to study the behavior of the sheet structure.
(3) Comparison of the geometry of the engineered disulfide with those of naturally observed disulfides in proteins shows that the engineered bridge adopts a left-handed spiral conformation with a typical set of dihedral angles and C alpha-C alpha distance.
(4) Via Karplus-type equations, they are transformed into dihedral angles and a good agreement is found, allowing for a determination of the phi angle with a certain range of degrees.
(5) A combination of two procedures was used to search the conformational space for fentanyl, which included nested dihedral scans, geometry optimization and molecular dynamics simulation at different temperatures.
(6) The results of high resolution 1H and 13C NMR using dimethylsulfoxide and 2H2O as solvents, combined with a new method for determining dihedral angles phi and psi from 13C and 1H spin lattice relaxation times are presented.
(7) A total of 1244 experimental constraints were used, including 1120 distance constraints, 103 dihedral angle constraints and 21 hydrogen bond constraints.
(8) We have developed a method to obtain the dihedral angles for a low-energy structure of a protein, starting with the X-ray structure; it is applied here to examine the degree of flexibility of bovine pancreatic trypsin inhibitor.
(9) Interproton distances were derived from crosspeak volumes in two dimensional Nuclear Overhauser Effect spectra, and dihedral angles were calculated from appropriate coupling constants.
(10) The orientation of the N-phenyl group with respect to the N-acyl moiety is essentially invariant with an approximately 90 degrees dihedral angle.
(11) The solution structures were calculated using 409 distance and 73 dihedral angle restraints.
(12) On the basis of the conformational energy (delta E, difference from the most stable conformational energy), which is calculated as a function of the dihedral angle (theta) between the two phenyl rings, biphenyl congeners can be classified into four groups with different conformations.
(13) A hydrated cobalt ion is found to coordinate to two N7 atoms of adjacent guanines, forcing these two guanines to destack with a large dihedral angle (32 degrees), in the dimer of the tetragonal form.
(14) The dihedral angle between the two benzenoid rings measures 1.4(1) degrees.
(15) The solution structure of insectotoxin 15A (35 residues) from scorpion Buthus eupeus was determined on the basis of 386 interproton distance restraints 12 hydrogen-bonding restraints and 113 dihedral angle restraints derived from 1H NMR experiments.
(16) It is concluded that weak attractive interactions between CH groups and S atoms are capable of stabilizing rotamers with unusually low (about 30 degrees) values of the SS-CC dihedral angle.
(17) beta-Breakers can be located automatically using a consensus approach based on algorithmic secondary structure assignment, solvent accessibility and backbone dihedral angles.
(18) It is shown that the dihedral angle omega of the Man alpha 1-6Man beta linkage exhibits low flexibility with a preference for the omega = 180 degrees conformation when residue D2 is present and high flexibility when this residue is absent.
(19) The majority of paperclips are shown to have tightly clustered sets of main-chain dihedral angles.
(20) Measurements on model compounds have been used to characterise a Karplus-type relationship between 3JCOCH and dihedral angles in sugar.
Upward
Definition:
(adv.) Alt. of Upwards
(a.) Directed toward a higher place; as, with upward eye; with upward course.
(n.) The upper part; the top.
Example Sentences:
(1) However, a highly significant upward shift of the proliferating cell compartment was observed in the cancer group, resulting in a specific modification of the [3H]TDR labeling pattern in 6 of 17 specimens.
(2) Moments later, Strauss introduces the bold human character with an energetic, upwards melody which he titles "the climb" in the score.
(3) They also questioned why George Osborne and the Treasury failed to realise there was a potential issue earlier in the calculation process – pointing to recent upwards revisions of post-1995 gross national income by the UK’s own statistics watchdog.
(4) Here we present images of polydeoxyadenylate molecules aligned in parallel, with their bases lying flat on a surface of highly oriented pyrolytic graphite and with their charged phosphodiester backbones protruding upwards.
(5) The authors decided to keep in this series only hips presenting with a very considerable upward displacement of the femoral head of type IV in Crowe, Maini and Ranawat's classification.
(6) In this study downward gaze was more severely disturbed than upward gaze.
(7) on, whereas palpation is only possible upward of 15 mm.
(8) Past measurements have shown that the intensity range is reduced at the extremes of the F0 range, that there is a gradual upward tilt of the high- and low-intensity boundaries with increasing F0, and that a ripple exists at the boundaries.
(9) We have the nuclear-related wealth, which captures the highly skilled and the affluent and the upwardly mobile.
(10) In the absence of glutamine the aggregate is readily dissociated following dilution of the extract; that is, velocity concaves upward as a function of increasing protein concentration.
(11) This contralateral defect involved the foot and extended upwards to end in a sensory level.
(12) Isolated frog retinas kept receptor side-upward in a moist chamber without perfusion showed the well-known slow PIII generated by the potassium decrease around receptors.
(13) Levels of alpha 1-antitrypsin (A 1-AT) showed marked season-related fluctuation patterns in Co children, the curves in E group children turned steeply upward from the third examination series on.
(14) The first eigenvector, when represented by grey scale maps depicting a pair of eyes, reveals that, as average threshold increases, the visual field rises and flattens, like an umbrella that, initially closed, is simultaneously opened and thrust upwards.
(15) UMLBs (n = 14) had no spontaneous activity and emitted bursts of action potentials that preceded rapid eye movements by approximately 6 ms. Parameters of the burst (duration and number of spikes) were highly correlated with parameters of the rapid eye movement (duration and amplitude of the upward displacement of the eyes).
(16) Put simply, there would have to be evidence that ultra-low oil prices are having only a temporary downward impact on inflation and have helped disguise upward pressure on wages caused by falling unemployment.
(17) With systole there is downward (caudal) flow of CSF in the aqueduct of Sylvius, the foramen of Magendie, the basal cisterns and the dorsal and ventral subarachnoid spaces while during diastole, upward (cranial) flow of CSF in these same structures is seen.
(18) During the operation an upward looping PICA was found crossing and tightly compressing the exit zone of the right facial nerve.
(19) After upward transposition of the anterior lamella, the excised skin is very suitable for covering the free tarsal surface.
(20) Assuming no future environmental or lifestyle changes, the upward trend in age-adjusted mortality rates, which averaged 2 to 3% per annum since 1950, is projected to discontinue and bend downward by the second decade of the 21st century.