Results 11 to 20 of about 501,591 (350)

Properties of axial diameters [PDF]

open access: diamondBulletin of the Australian Mathematical Society, 1989
Λ is a lattice and K a bounded, open, convex set in En. An axial diameter of K is the maximal length Xi, of chords of K parallel to the ith lattice basis vector (1 ≤ i ≤ n). A number of properties of the axial diameters are developed. For sets K containing just one lattice point, an inequality is established; when Λ is the integral lattice, this ...
P. R. Scott
openalex   +3 more sources

Accuracy of IndoseCT for Measuring Effective Diameter from axial CT Images [PDF]

open access: diamondInternational Journal of Scientific Research in Science and Technology, 2023
We investigated the accuracy of automatic measurements of the effective diameter (Deff) using IndoseCT software with axial computed tomography (CT) images of polyester-resin (PESR) phantoms of various diameters. The phantoms used PESR as the base material mixed with Methyl Ethyl Ketone Peroxide (MEKP) as the catalyst.
Nihayati Rizki   +3 more
openalex   +2 more sources

Optimisation of Inner Diameter to Outer Diameter Ratio of Axial Flux Permanent Magnet Generator

open access: bronzeIOSR Journal of Electrical and Electronics Engineering, 2014
This paper presents design of axial flux permanent magnet generator using torus construction of stator with plastic material. To maximise the efficiency of the generator, the losses are to be minimized in proposed N-S Arrangement iron loss is absent and only copper losses are present. To minimise the copper loss for a given rating, the per phase stator
Abid H. Saifee, Arvind Mittal
  +4 more sources

Is airway diameter measured accurately on routine axial CT scans? Comparison with true axial diameter using MPR in children with airway compression owing to pulmonary TB

open access: yesSouth African Journal of Radiology, 2010
Airway compression is a common complication of TB lymphadenopathy in children, and the diagnostic workup of patients with suspected tracheal or bronchial stenoses includes bronchoscopy and CT (computed tomography).2 This process affords the opportunity ...
Marie Grobbelaar, Savvas Andronikou
doaj   +4 more sources

The Behavior Of Large Diameter Instrumented Bored Pile Under Axial Loads

open access: green, 2018
{"references": ["A. Akbar, S. D. Khilji, S, B. Khan, and M. S. Qureshi, \"Shaft Friction of Bored Piles in Sand\", Proc. of the 17th ICSMGE, Alex. Egypt, Oct. 2009.", "A. N. Al-Jorany, \"Full scale Tests on Instrumented large Diameter Bored Pile\", M.Sc thesis, Baghdad University, 1987.", "ASTM, \"Method of Testing Piles under Static Compressive Load.\"
Fouad Ahmed Al-Jumaily   +2 more
openalex   +2 more sources

Properties of Axial Diameters of a Simplex [PDF]

open access: yesDiscrete & Computational Geometry, 2011
Let S be a nondegenerate simplex in ℝn . It is proved that the minimal possible σ>0, such that a homothetic copy of S of ratio σ contains [0,1]n , is equal to $\sum_{i=1}^{n} 1/d_{i}(S)$. Here d i (S) denotes the length of a longest segment in S parallel to the ith coordinate axis.
openaire   +1 more source

Influence of Diameter Increase Speed on Diameter-Axial Rolling of Large 40Cr13 Stainless Steel Ring

open access: yesJournal of Physics: Conference Series, 2023
Abstract Rolling speed ratios during the rolling process are critical to ring forming in this pepper. The selected roll feed mode is constant with the increasing speed of ring diameter during the main rolling stage. Based on Deform-3D finite element software, a large size ring with a diameter of φ1530 mm was taken as the research object.
Zhiqi Shi, Liping Shi, Sifu Cheng
openaire   +1 more source

Effect of microchannel aspect ratio on residence time distributions and the axial dispersion coefficient [PDF]

open access: yes, 2009
The effect of microchannel aspect ratio (channel depth/channel width) on residence time distributions and the axial dispersion coefficient have been investigated for Newtonian and shear thinning non-Newtonian flow using computational fluid dynamics.
Aubin, Joelle   +3 more
core   +2 more sources

On Some Problem for a Simplex and a Cube in Rⁿ

open access: yesМоделирование и анализ информационных систем, 2013
Let S be a nondegenerate simplex in Rⁿ. Denote by α(S) the minimal σ > 0 such that the unit cube Qn:= [0, 1]ⁿ is contained in a translate of σS. In the case α(S) ≠ 1 the translate of α(S)S containing Qn is a homothetic copy of S with the homothety ...
M. V. Nevskii
doaj   +1 more source

Permeability evolution during progressive development of deformation bands in porous sandstones [PDF]

open access: yes, 2003
[1] Triaxial deformation experiments were carried out on large (0.1 m) diameter cores of a porous sandstone in order to investigate the evolution of bulk sample permeability as a function of axial strain and effective confining pressure.
Antonellini   +51 more
core   +3 more sources

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