The diameters of chromatin fibers from Thyone briareus (sea cucumber) sperm (DNA linker length, n = 87 bp) and Necturus maculosus (mudpuppy) erythrocytes (n = 48 bp) were investigated. Soluble fibers were frozen into vitrified aqueous solutions of physiological ionic strength (124 mM), imaged by cryo-EM, and measured interactively using quantitative computer image-processing techniques. Frozen-...

OBJECTIVE Several ultrasound-based methods are currently used to assess aortic diameter, circumferential strain and stiffness in mice, but none of them is flawless and a gold standard is lacking. We aimed to assess the validity and sensitivity of these methods in control animals and animals developing dissecting abdominal aortic aneurysm. METHODS AND RESULTS We first compared systolic and dia...

Uniaxial compressive strength (UCS) and elastic properties of rocks play a major and vital role for the design of any engineering structure. The specimen diameter size is one of the main factors that influencing on UCS, elasticity modulus and Poisson’s ratio (E and υ). Here, an attempt has been made to investigate the effect of specimen diameter size on UCS, E and υ. Moreover, we studied the co...

Given a weighted graph G = (V,E,w), we investigate the problem of constructing a sequence of n = |V | subsets of vertices M1, . . . ,Mn (called groups) with small diameters, where the diameter of a group is calculated using distances in G. The constraint on these n groups is that they must be incremental: M1 ⊂ M2 ⊂ · · · ⊂ Mn = V . The cost of a sequence is the maximum ratio between the diamete...

the chamomile species of anthemis triumfettii (l.) all is one of important medicinal plant belong to compositae family and it grows as wild species in zagros and alborz mountains, iran. the aim of this study was to evaluation of morphological and phenological traits and their relationships with essential oil. seeds of seven accessions were sown in jiffy pots and transferred to field using rando...

Abstract In this work, the impact of cone diameters on flow field and separation efficiency in a cyclone separator is examined numerically employing Reynolds Stress Model for eight various geometries separators. The motion solid particle modelled utilizing Eulerian-Lagrangian method. Three-dimensional simulation air with particles carried out by commercial computational fluid dynamics software,...

During 12 months of sampling, from 17 stations, 327 specimens of Soboor fish Tenualosa ilisha, including 120 females, 113 males and 86 immature were caught. Total length (TL) of the fishes was 120-500mm. Maximum diameters of soboor ova 0.795mm and the ova with diameter more than 0.7 mm released at one spawning round. Temporal and spatial distribution of ova diameter corresponding to GSI changes...

The ActiveAx technique fits the minimal model of white matter diffusion to diffusion MRI data acquired using optimized protocols that provide orientationally invariant indices of axon diameter and density. We investigated how limitations of the available maximal gradient strength (Gmax) on a scanner influence the sensitivity to a range of axon diameters. Multishell high-angular-diffusion-imagin...

The different branch diameters of five-way tube affect the design loading internal pressure in hydroforming process, where large-diameter is broken more easily than small-diameter one due to same ultimate stress material one-step forming method. Therefore, first four-way and then multi-step (FFTF) method three-way (FTTF) were proposed fabricate 5A02 aluminum alloy with two kinds avoid burst tub...