Results 101 to 110 of about 131,967 (276)
Numerical Investigation of the Nonlinear Drill String Dynamics Under Stick–Slip Vibration
VibrationThis paper presents a comprehensive analysis of the influence of rotary table velocity, weight-on-bit, and viscous damping on the drill string stick–slip vibration.
Mohammad Javad Moharrami +2 more
doaj +1 more source
Critical exponents of the driven elastic string in a disordered medium
, 2005 We analyze the harmonic elastic string driven through a continuous random potential above the depinning threshold. The velocity exponent beta = 0.33(2) is calculated.
H. Gao +4 more
core +1 more source
Advanced Science, EarlyView.Stochastic nanoscale physical cues induce glioblastoma (GBM)‐associated transcriptional traits in naïve astrocytes leading to spontaneous formation of spheroids. Cells within spheroids express activated‐MMP2 and a differential gene expression pattern involving P53 and NOTCH3, providing evidence for a role for changes in brain topography, as observed in
Laurent Starck +8 more
wiley +1 more source
Shiyou jixieA HTHP high-sulfur carbonate gas field with edge/bottom water in Central Asia is challenged by operating conditions such as liquid accumulation in wellbore， frequent pipe-diameter varying in production string， high wellhead pressure， high temperature ...
Chai Hui +8 more
doaj
Advanced Science, EarlyView.Hydrogen voltage gated channel 1 (HVCN1) is upregulated in microglia of both ALS patients and its mouse model. HVCN1 deficiency enhances microglial migration via suppressing Akt signaling, promotes neurotrophic capacity and motor function, and prolongs survival of the SOD1G93A ALS mice. This study identifies HVCN1 as a novel, promising druggable target
Fan Wang +16 more
wiley +1 more source
A Self‐Organized Liquid Reaction Container for Cellular Memory
Advanced Science, EarlyView.How cells restore epigenetic information lost during replication is not known. This work proposes a mechanism based on the formation of biomolecular condensates. These condensates are induced by the chromosome itself and serve as reaction vessels for reconstructing missing epigenetic markers.
Sukanta Mukherjee +4 more
wiley +1 more source
Development and Application of CT Inner Blanking Plug
Shiyou jixie, 2016 With the extension of oil field exploitation period, the inner pressure isolation issue in snubbing operation of the coiled tubing (CT) velocity string needs to be addressed.Combined with the feature of velocity string, wellhead suspension device as well
吕维平 +5 more
doaj
Baryon inhomogeneity generation via cosmic strings at QCD scale and its effects on nucleosynthesis
, 2002 We have earlier shown that cosmic strings moving through the plasma at the time of a first order quark-hadron transition in the early universe can generate large scale baryon inhomogeneities.
A. Heckler +30 more
core +3 more sources
Advanced Science, EarlyView.Plants are promising materials for building sustainable and eco‐friendly robots due to their inherent multifunctionality, with actuation playing a crucial role. This article focuses on the physical movements of plants and, from the perspective of actuation characteristics, explores representative plant species and their behaviors, the current state of ...
Kazuya Murakami +8 more
wiley +1 more source
Improvement of Water Drainage and Gas Production Technology by Velocity String in Offshore Gas Well
Shiyou jixie, 2018 Most of gas wells in East China Sea produce water and are prone to liquid loading, leading to the reduced production or even halted production. It is necessary to implement water drainage and gas production measures to increase recovery.
Zhong Baoku +3 more
doaj