Results 91 to 100 of about 6,166,451 (341)

Lapping of Balls Made of Hard-Magnetic Sintered Material

open access: yesМеханика машин, механизмов и материалов, 2008
Construction of the instrument for lapping of the balls between coaxially installed lower drive disk and two rings (internal and external) is described. The internal ring is connected with rotary drive and provided with a conical bevel. The external ring
K.G. Schetnikovich
doaj  

SSME turbopump bearing analytical study [PDF]

open access: yes
Three shuttle pump bearings operating under severe overspeed and shut-down conditions are evaluated. The specific parameters investigated include outer race stresses, cage stresses, cage-race drag, bearing heating, and crush loading.
Kannel, J. W., Merriman, T.
core   +1 more source

An approximate JKR solution for a general contact, including rough contacts

open access: yes, 2017
In the present note, we suggest a simple closed form approximate solution to the adhesive contact problem under the so-called JKR regime. The derivation is based on generalizing the original JKR energetic derivation assuming calculation of the strain ...
Ciavarella, M.
core   +1 more source

BMI‐1 modulation and trafficking during M phase in diffuse intrinsic pontine glioma

open access: yesFEBS Open Bio, EarlyView.
The schematic illustrates BMI‐1 phosphorylation during M phase, which triggers its translocation from the nucleus to the cytoplasm. In cycling cells, BMI‐1 functions within the PRC1 complex to mediate H2A K119 monoubiquitination. Following PTC596‐induced M phase arrest, phosphorylated BMI‐1 dissociates from PRC1 and is exported to the cytoplasm via its
Banlanjo Umaru   +6 more
wiley   +1 more source

Modeling of Beams’ Multiple-Contact Mode with an Application in the Design of a High-g Threshold Microaccelerometer

open access: yesSensors, 2011
Beam’s multiple-contact mode, characterized by multiple and discrete contact regions, non-uniform stoppers’ heights, irregular contact sequence, seesaw-like effect, indirect interaction between different stoppers, and  complex coupling relationship ...
Kai Li, Wenyuan Chen, Weiping Zhang
doaj   +1 more source

Characterization of Acoustic Emissions from Mechanical Seals for Fault Detection [PDF]

open access: yes, 2014
The application of high-frequency Acoustic Emissions (AE) for mechanical seals diagnosis is gaining acceptance as a useful complimentary tool. This paper investigates the AE characteristics of mechanical seals under different rotational speed and fluid ...
Ball, Andrew   +3 more
core  

Cognitive Load Estimation in the Wild

open access: yesInternational Conference on Human Factors in Computing Systems, 2018
Cognitive load has been shown, over hundreds of validated studies, to be an important variable for understanding human performance. However, establishing practical, non-contact approaches for automated estimation of cognitive load under real-world ...
Alex Fridman   +3 more
semanticscholar   +1 more source

Tracking Motor Progression and Device‐Aided Therapy Eligibility in Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterise the progression of motor symptoms and identify eligibility for device‐aided therapies in Parkinson's disease, using both the 5‐2‐1 criteria and a refined clinical definition, while examining differences across genetic subgroups.
David Ledingham   +7 more
wiley   +1 more source

Effect of extended tooth contact on the modeling of spur gear transmissions [PDF]

open access: yes
In some gear dynamic models, the effect of tooth flexibility is ignored when the model determines which pairs of teeth are in contact. Deflection of loaded teeth is not introduced until the equations of motion are solved.
Coy, John J.   +3 more
core   +1 more source

Contact mechanics: relation between interfacial separation and load [PDF]

open access: yes, 2007
I study the contact between a rigid solid with a randomly rough surface and an elastic block with a flat surface. I derive a relation between the (average) interfacial separation $u$ and the applied normal squeezing pressure $p$.
Persson, B. N. J.
core   +2 more sources

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