Results 41 to 50 of about 28,239 (263)

Determination of Material and Interaction Properties of Granular Fertilizer Particles Using DEM Simulation and Bench Testing

open access: yesAgriculture, 2023
The discrete element method (DEM) is an effective tool for obtaining qualitative and quantitative information on particle motion, which aids in the design and optimization of agricultural equipment structures.
Xiaolong Lei   +8 more
doaj   +1 more source

Liquid biopsy epigenetics: establishing a molecular profile based on cell‐free DNA

open access: yesMolecular Oncology, EarlyView.
Cell‐free DNA (cfDNA) fragments in plasma from cancer patients carry epigenetic signatures reflecting their cells of origin. These epigenetic features include DNA methylation, nucleosome modifications, and variations in fragmentation. This review describes the biological properties of each feature and explores optimal strategies for harnessing cfDNA ...
Christoffer Trier Maansson   +2 more
wiley   +1 more source

The physics of protoplanetesimal dust agglomerates. VII The low-velocity collision behavior of large dust agglomerates

open access: yes, 2012
We performed micro-gravity collision experiments in our laboratory drop-tower using 5-cm-sized dust agglomerates with volume filling factors of 0.3 and 0.4, respectively.
Blum, Jürgen   +3 more
core   +1 more source

Dynamics of particle-particle collisions in a viscous liquid [PDF]

open access: yes, 2006
When two solid spheres collide in a liquid, the dynamic collision process is slowed by viscous dissipation and the increased pressure in the interparticle gap as compared with dry collisions.
Hunt, M. L., Yang, F.-L.
core   +1 more source

Improving PARP inhibitor efficacy in bladder cancer without genetic BRCAness by combination with PLX51107

open access: yesMolecular Oncology, EarlyView.
Clinical trials on PARP inhibitors in urothelial carcinoma (UC) showed limited efficacy and a lack of predictive biomarkers. We propose SLFN5, SLFN11, and OAS1 as UC‐specific response predictors. We suggest Talazoparib as the better PARP inhibitor for UC than Olaparib.
Jutta Schmitz   +15 more
wiley   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

open access: yesMolecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed   +10 more
wiley   +1 more source

The Effect of the Width of an Aluminum Plate on a Bouncing Steel Ball [PDF]

open access: yesInternational Scholastic Journal of Science, 2013
The effect of the distance between clamping supports of an aluminum alloy plate on the coefficient of restitution of a bouncing steel ball was investigated. The plate was supported on two wooden blocks with a meter stick secured on either side.
Christine Hathaway, Hanh Nguyen
doaj   +1 more source

A Mass-Spring-Damper Model of a Bouncing Ball (Conference proceeding) [PDF]

open access: yes, 2005
The mechanical properties of a vertically dropped ball, represented by an equivalent mass-spring-damper model, are related to the coefficient of restitution and the time of contact of the ball during one bounce with the impacting surface. In addition, it
Huang, Shuguang, Nagurka, Mark L.
core   +1 more source

Simulations of vibrated granular medium with impact velocity dependent restitution coefficient [PDF]

open access: yes, 2005
We report numerical simulations of strongly vibrated granular materials designed to mimic recent experiments performed both in presence or absence of gravity.
Falcon, Eric, Mcnamara, Sean
core   +4 more sources

Coefficient of Restitution Interpreted as Damping in Vibroimpact [PDF]

open access: yesJournal of Applied Mechanics, 1975
During impact the relative motion of two bodies is often taken to be simply represented as half of a damped sine wave, according to the Kelvin-Voigt model. This is shown to be logically untenable, for it indicates that the bodies must exert tension on one another just before separating.
Hunt, Kenneth, Crossley, Erskine
openaire   +1 more source

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