Results 51 to 60 of about 921,833 (368)

A study on evaluation strategies in dimensional X-ray computed tomography by estimation of measurement uncertainties [PDF]

open access: yes, 2012
Computed tomography has entered the industrial world in 1980’s as a technique for non-destructive testing and has nowadays become a revolutionary tool for dimensional metrology, suitable for actual/nominal comparison and verification ...
Bartscher   +9 more
core   +2 more sources

Cylindrical gravitational waves

open access: yesClassical and Quantum Gravity, 1989
It is shown how the general cylindrical wave solution of Einstein's equations can be obtained from a matrix-valued generating function by adapting \textit{R. S. Ward}'s splitting construction [Gen. Relativ. Gravitation 15, 105-109 (1983; Zbl 0504.53022)].
openaire   +2 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

Fundamentals of adaptive strategy of cylindricity measurements with the use of longitudinal measurements

open access: yesMeasurement: Sensors, 2021
The paper addresses the problem of adaptive strategy of measurements of rotary parts. The authors propose a novel strategy that consists of two stages: a preliminary measurement and additional measurements.
Krzysztof Stępień   +2 more
doaj   +1 more source

Macroscopic simulation of the liner honing process [PDF]

open access: yes, 2012
The form quality, the roughness and the surface appearance produced by honing minimizes the friction of the piston in the liner. The process is however mechanically complex and the selection of the process parameters is currently based on empirical ...
DUMUR, Didier   +2 more
core   +5 more sources

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Quantifying hole quality through geometry accuracy and surface qualities in rotary ultrasonic machining of carbon fiber–reinforced plastic composites

open access: yesAdvances in Mechanical Engineering, 2020
Rotary ultrasonic machining has been approved as an effective and efficient hole making process for carbon fiber–reinforced plastic composites. Hole quality plays an important role in assembling carbon fiber–reinforced plastic components and can be ...
Dongzhe Zhang, Hui Wang, Weilong Cong
doaj   +1 more source

Aperiodic tilings and entropy

open access: yes, 2013
In this paper we present a construction of Kari-Culik aperiodic tile set - the smallest known until now. With the help of this construction, we prove that this tileset has positive entropy.
B. Durand   +5 more
core   +2 more sources

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

RESEARCH ON THE FITTING CLEARANCE BETWEEN FLANGE BORE AND SHAFT CONSIDERING MULTI-ERRORS COUPLING

open access: yesJixie qiangdu, 2018
The mating state between a flange bore and a shaft and the position error for a flange shaft in a bore has an important influence on the assembly accuracy of precision products.In view of the fact that three-dimensional cylindricity was usually ignored ...
NI WeiHua, JIANG XiaoHui
doaj  

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