(a.) Of or pertaining to a tetragon; having four angles or sides; thus, the square, the parallelogram, the rhombus, and the trapezium are tetragonal fingers.
(a.) Having four prominent longitudinal angles.
(a.) Designating, or belonging to, a certain system of crystallization; dimetric. See Tetragonal system, under Crystallization.
Example Sentences:
(1) The crystals are tetragonal, with unit cell dimensions a = 48.9 A and c = 82.0 A, space group P 41 21 2 or P 43212.
(2) The morphological unit of the regular array appeared to consist of four spherical subunits, each about 2 nm in diameter, which were arranged in a tetragonal pattern about 4.5 by 7.0 nm in dimension.
(3) Two different tetragonal crystal forms have been characterized, both diffracting to about 6 A using synchrotron radiation.
(4) The outer structured layer was a linear array of particles overlying an inner tetragonal array of larger subunits.
(5) An activity assay of redissolved tetragonal form crystals indicates that the uncleaved, functional serpin has been crystallized.
(6) The A ring of the steroid in the tetragonal crystal was found to be disordered, and exists in both a normal and inverted conformation.
(7) One was in a hexagonal array, and the other was in a tetragonal array.
(8) The crystals are tetragonal rods with unit cell dimensions a = 128.6 A, c = 92.5 A.
(9) 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.
(10) These tubules are clearly distinguishable by their shape and fine structure from the periodic structure of a P. rhodos cell wall layer, which exhibits a tetragonal pattern, and also from polyheads and polysheaths of defective bacteriophages.
(11) The structure crystallizes in the tetragonal space group P41 with a = 8.225 (5) and c = 28.42 (1) A.
(12) This truncated S-protein was exported via the periplasm to the cell surface, but could not self-assemble into a tetragonal array or be anchored to the cell surface.
(13) Bacillus sphaericus strain P-1 has previously been shown to have a tetragonally arrayed (T layer) protein which forms the outer layer of the cell wall.
(14) Its three-dimensional structure from two different crystal forms (tetragonal and trigonal) has been determined by X-ray diffraction analysis at 1 A resolution.
(15) Both crystal forms are tetragonal, the space group for form I is P4(1)22 (or P4(3)22), and that for form II is P4(2)22.
(16) Density variations suggest an arrangement of subunits, either tetragonal or trigonal, viewed from a variety of angles about the DNA axis.
(17) The binuclear copper site is characterized as two tetragonal Cu(II) atoms bridged by both an endogenous protein ligand and the exogenous ligand (i.e., peroxide), with the lack of an electron paramagnetic resonance signal being the result of antiferromagnetic exchange via the endogenous bridge.
(18) The crystals are tetragonal, show the symmetry of space group P4(1) or its enantiomer, have lattice constants of a = 58.46 (1) and c = 77.02 (3) A, and scatter to at least 2 A resolution.
(19) These elevations were distributed according to a tetragonal pattern with a periodicity of 850 A.
(20) Crystals are tetragonal, with space group P42(1)2, a = b = 171 A, c = 150 A in the absence of ATP; and P422, a = b = 101 A, c = 114.4 A in the presence of ATP.
Unequal
Definition:
(a.) Not equal; not matched; not of the same size, length, breadth, quantity, strength, talents, acquirements, age, station, or the like; as, the fingers are of unequal length; peers and commoners are unequal in rank.
(a.) Ill balanced or matched; disproportioned; hence, not equitable; partial; unjust; unfair.
(a.) Not uniform; not equable; irregular; uneven; as, unequal pulsations; an unequal poem.
(a.) Not adequate or sufficient; inferior; as, the man was unequal to the emergency; the timber was unequal to the sudden strain.
(a.) Not having the two sides or the parts symmetrical.
Example Sentences:
(1) The data were analysed using statistical methods that yield continuous piecewise linear regression equations and allow subjects to have repeated measures which are unequally spaced and at different times for different subjects.
(2) When initial joint angles were unequal, joints moving from smaller initial angles reached their functional limits earlier and stopped first.
(3) A large proportion of allergen escaped rapidly from the ear, about 50% within 3 hr in the case of PCl, within 15 min for DNCB, the difference probably reflecting their unequal reaction constants.
(4) Even in Mondrian-like patterns resembling those used by Land and McCann (1971), equiluminant objects may appear to be of unequal brightness.
(5) Approximately 15% are multilobed but, unlike (-Mg) cells, contain lobes of unequal size with either zero, one, or several nuclei present in each.
(6) We propose that the deletion of the rRNA operon occurred in the ilv-leu gene cluster of the B. subtilis genome as a result of unequal recombination between redundant sequences.
(7) In the pediatric age group, this malformation is notable because of the marked sex predilection in males (70%) and an unequal topographic incidence in the circle of Willis, where carotid artery (39.3%) and anterior communicating artery lesions (30%) predominate.
(8) We deduce that in ubiquitin genes, concerted evolution involves both unequal crossover and gene conversion, and that the average time since two repeated units within the polyubiquitin locus most recently shared a common ancestor is approximately 38 million years (Myr) in mammals, but perhaps only 11 Myr in Drosophila.
(9) "This unfair and unequal treatment means that children with disabilities – already so disadvantaged – suffer further indignities.
(10) The fact that property is unequally distributed so many people don't have blessed "property rights" gets airbrushed from the theory.
(11) These results show that there is an unequal expression of the two non-allelic genes controlling insulin biosynthesis in foetal and adult rat pancreas.
(12) Nonheterogeneity of histamine effect can be presumably explained by a strong representation of various types of receptors to which this biogenic amine is bound (H1, H2, H3) in the organs and tissues, their unequal location on the pre- and postsynaptic membrane, the differences in their physiological functions.
(13) The finding indicates that supplier induced demand is a factor to consider in addition to supplier induced utilization when one tries to explain how supplier inducement may affect the unequal distribution of dentists.
(14) Although the role of each form is unknown, it is possible that variable or joining-gene segment selection events or functional differences account for their unequal usage.
(15) For maximum responses less than about 5 mV in cones, the length constant of exponential decay, lambda, varied from less than 10 mum to greater than 35 mum, and the values obtained in opposite directions were often unequal.
(16) Possible explanations for the failure to obtain 100% concordance are methodologic shortcomings, intercell variations in chromosome contraction, and unequal mitotic crossing over.
(17) The reason black people could not get out of New Orleans was not because they were separate but because they were unequal - the wealthier ones left.
(18) Unequal or absent pulses were found in three patients.
(19) In addition, these genes form highly complicated gene families that have evolved through gene conversion and unequal crossing-over.
(20) In Rec+ haploids, as in diploids, intrachromosomal recombination in the ribosomal DNA was detected in 2 to 6% of meiotic divisions, and most events were unequal reciprocal sister chromatid exchange (SCE).