Results 21 to 30 of about 501,591 (350)

On Some Results in the Geometry of Convex Bodies and their Applications

open access: yesМоделирование и анализ информационных систем, 2015
We give a survey of some results in the geometry of convex bodies and their applications.
M. V. Nevskii
doaj   +1 more source

J-PET: a new technology for the whole-body PET imaging [PDF]

open access: yes, 2017
The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET built from plastic scintillators. J-PET prototype consists of 192 detection modules arranged axially in three layers forming a cylindrical diagnostic chamber with the inner diameter of
Białas, P.   +32 more
core   +2 more sources

Non-Contact Axial Work piece Diameter Size Measuring System [PDF]

open access: yesAdvances in Social Science, Education and Humanities Research, 2015
This article designs a non-contact axial work piece diameter size measuring system. It uses high accuracy laser sensor and precision linear module. This paper introduced working principle of the system, mechanical structure and measuring range. The characteristics include non-contact, high precision, automatic scanning and measuring range can be ...
Qi Lu, Hong Zheng
openaire   +1 more source

Correlation Between Ciliary Sulcus Diameter and IOL Master Measurements in Patients with Cataract

open access: yesTürk Oftalmoloji Dergisi, 2011
Pur po se: To determine the mean sulcus diameters in patients older than 50 years with senile cataract and to analyze the correlations of sulcus diameters with IOLMaster measurements of corneal diameter (white to white), axial length, keratometry and ...
Alper Ağca   +3 more
doaj   +1 more source

High speed operation design considerations for fractional slot axial flux PMSM [PDF]

open access: yes, 2015
This paper discusses intensively the design considerations for the fractional slot axial flux permanent magnet synchronous (AFPMSMs) in order to work efficiently in the constant power speed range, also known as the field weakening (FW) region.
Hemeida, Ahmed   +2 more
core   +2 more sources

EXPERIMENTAL STUDY OF LIQUID DISPERSION IN BUBBLE COLUMN

open access: yesDiyala Journal of Engineering Sciences, 2008
The main object of this study is to investigate the influence of column diameter and superficial gas velocity on liquid phase dispersion coefficients (axial and radial dispersion coefficients), mixing times, gas holdup, and bubble dynamics (bubble ...
Hayder Abd Al-kaream Muhsin
doaj   +1 more source

Growth model of cavity generated by the projectile impacting liquid-filled tank

open access: yesDefence Technology, 2020
The high-speed impact of a projectile on a liquid-filled tank causes the hydraulic ram, in which a cavity is formed. To study the growth characteristics of the cavity, the formation mechanism of the cavity is analyzed.
Bei-lei Zhao   +4 more
doaj   +1 more source

Photopic pupil size change in myopic orthokeratology and its influence on axial length elongation [PDF]

open access: yesInternational Journal of Ophthalmology, 2022
AIM: To explore the photopic pupil size behavior in myopic children undergoing overnight orthokeratology (ortho-k) over 1-year period and its effects on the axial elongation.
Meng-Jun Zhu   +6 more
doaj   +1 more source

Numerical Simulation of Cavitation Flow in a Low Specific-Speed Centrifugal Pump with Different Diameters of Balance Holes

open access: yesJournal of Marine Science and Engineering, 2022
In order to study the influence of a balance hole’s diameter on the cavitation performance of low specific-speed centrifugal pumps, a centrifugal pump with a specific speed of 0.301 was selected as the research object.
Weidong Cao, Xinyu Yang, Zhixiang Jia
doaj   +1 more source

Diameter-dependent axial prestretch of porcine coronary arteries and veins

open access: yesJournal of Applied Physiology, 2012
The pressure-diameter relation (PDR) and the wall strain of coronary blood vessels have important implications for coronary blood flow and arthrosclerosis, respectively. Previous studies have shown that these mechanical quantities are significantly affected by the axial stretch of the vessels.
Xiaomei, Guo, Yi, Liu, Ghassan S, Kassab
openaire   +3 more sources

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