Results 11 to 20 of about 80,743 (300)

Simplification of the rolling contact-related lifetime calculation of profiled rail guides with a polynomial regression [PDF]

open access: yesJournal of Machine Engineering
The calculation of the lifespan of profile rail guides is an essential part in the design process of machines. Conventional lifespan models yield good results when calculating lifespan values under a homogeneous distribution of individual rolling contact
Danny Staroszyk   +2 more
doaj   +4 more sources

Positron Lifetime Calculation for Defects in Graphite [PDF]

open access: yesPositron Lifetime Calculation for Defects in Graphite
Positron lifetime calculation has been performed for a vacancy and vacancy clusters in graphite and the comparison with experimental result was also made. Defect structure was obtained in a model graphite lattice after the relaxation of whole lattice using the molecular dynamics method, where the atomic potential presented by Andribet et al.
Onitsuka, Takashi   +14 more
openaire   +1 more source

Global, Regional, and Country-Specific Lifetime Risks of Stroke, 1990 and 2016 [PDF]

open access: yes, 2018
BACKGROUND The lifetime risk of stroke has been calculated in a limited number of selected populations. We sought to estimate the lifetime risk of stroke at the regional, country, and global level using data from a comprehensive study of the prevalence ...
GBD 2016 Lifetime Risk Stroke   +1 more
core   +7 more sources

Prediction of the Main Gear Lifetime of BELAZ Dump Truck at the Design Stage

open access: yesМеханика машин, механизмов и материалов, 2023
The purpose of the research is to improve the method for calculating the lifetime of bevel gears with a circular tooth of the driving axle of the BELAZ dump truck with a hydromechanical transmission.
Aliaksander S. Lisichik   +4 more
doaj   +1 more source

Measurement of [pi]+[pi]- bound state lifetime with the DIRAC spectrometer at CERN [PDF]

open access: yes, 2005
The goal of the DIRAC experiment at CERN is to measure the lifetime of the pionium atom, A2 , a bound state of a + and
Goldin, D, Goldin, Daniel
core   +1 more source

Calculating Excess Lifetime Risk in Relative Risk Models [PDF]

open access: yesEnvironmental Health Perspectives, 1990
When assessing the impact of radiation exposure it is common practice to present the final conclusions in terms of excess lifetime cancer risk in a population exposed to a given dose. The present investigation is mainly a methodological study focusing on some of the major issues and uncertainties involved in calculating such excess lifetime risks and ...
Vaeth, M., Pierce, D. A.
openaire   +2 more sources

Calculation of expected remaining lifetime of dialysis patients in Japan

open access: yesRenal Replacement Therapy, 2020
Background The expected remaining lifetime of dialysis patients in Japan was only reported in 2003 and has not been reported thereafter. From 2003 to the present, several new therapeutic agents have been introduced.
Shigeru Nakai   +4 more
doaj   +1 more source

Three Dimensional Lifetime-Multiplex Tomography Based on Time-Gated Capturing of Near-Infrared Fluorescence Images

open access: yesApplied Sciences, 2022
We report a computed tomography (CT) technique for mapping near-infrared fluorescence (NIRF) lifetime as a multiplex three-dimensional (3D) imaging method, using a conventional NIR camera.
Masakazu Umezawa   +3 more
doaj   +1 more source

Energy efficient Technique for Cluster-head Selection in IoT Network [PDF]

open access: yesEAI Endorsed Transactions on Smart Cities, 2020
INTRODUCTION: Wireless sensor systems (WSN) clusters specific transducers that give detecting services to Internet ofThings (IoT) devices with limited energy and capacity assets. Clustering calculation assumes a significant job in controlpreservation for
Vishwas B, Gowtham M, Gururaj L
doaj   +1 more source

Analysis of Orbital Lifetime Prediction Parameters in Preparation for Post-Mission Disposal [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
Atmospheric drag force is an important source of perturbation of Low Earth Orbit (LEO) orbit satellites, and solar activity is a major factor for changes in atmospheric density.
Ha–Yeon Choi   +2 more
doaj   +1 more source

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