Results 111 to 120 of about 103,129 (319)

Wake formation behind positively charged spacecraft in flowing tenuous plasmas

, 2006
Spacecraft in tenuous plasmas become positively charged because of photoelectron emission. If the plasma is supersonically drifting with respect to the spacecraft, a wake forms behind it.
E. Engwall, A. I. Eriksson, J. Forest, Forest, Julien,, Engwall, Erik,, Eriksson, Anders I.,   +5 more
core   +1 more source

Impact of solar-wind turbulence on a planetary bow shock

Astronomy & Astrophysics
Context. The interaction of the solar-wind plasma with a magnetized planet generates a bow-shaped shock ahead of the wind. Over recent decades, near-Earth spacecraft observations have provided insights into the physics of the bow shock, and the findings ...
Behar E., Pucci F., Simon Wedlund C., Henri P., Ballerini G., Preisser L., Califano F.   +6 more
doaj   +1 more source

CD47 promotes mitogen‐activated protein kinase and epithelial‐to‐mesenchymal transition molecular programs to drive prometastatic phenotypes in non‐small cell lung cancer

Molecular Oncology, EarlyView.
Beyond its role in immune evasion, this study identified that CD47 drives tumor‐intrinsic signaling in non‐small cell lung cancer (NSCLC). Transcriptomic profiling and functional studies revealed that CD47 regulates cell adhesion, migration, and metastasis through an ERK–EMT signaling axis.
Asa P.Y. Lau, Lilian G. Zhai, Ryunosuke Hoshi, Zackary Rousseau, Abraam Zakhary, Yin Fang Wu, Rola M. Saleeb, Heyu Ni, Kelsie L. Thu   +8 more
wiley   +1 more source

Kinetic theory of dusty plasmas. IV. Distribution and fluctuations of dust charges

, 2002
The recent results of the kinetic theory of dusty plasmas [V. N. Tsytovich and U. de Angelis, Phys. Plasmas 6, 1093 (1999)] are used to investigate the distribution and fluctuations of the dust charges in dusty plasmas.
V. N. TSYTOVICH, Tsytovich, V. N., de Angelis, U., Tsytovich, V., DE ANGELIS, UMBERTO, U. de Angelis   +5 more
core   +1 more source

Experimental and Analytical Studies of Merging Plasma Loops on the Caltech Solar Loop Experiment [PDF]

, 2011
Of crucial importance for magnetized plasmas is magnetic helicity, a topological quantity that measures the knottedness or twistedness of the magnetic field. A universal relaxation theory, applicable to astrophysical and laboratory plasmas, dictates the
Perkins, Rory James
core   +1 more source

Space-time in motion: An evolving relativistic binary black hole metric for GIZMO

Astronomy & Astrophysics
The last evolutionary stages of massive black hole binaries prior to coalescence are dominated by the emission of gravitational waves, which will be probed by the future Laser Interferometer Space Antenna.
Fedrigo Giacomo, Lupi Alessandro, Franchini Alessia, Bonetti Matteo   +3 more
doaj   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source

The singular behaviour of ambipolar diffusion revealed by 1D Cartesian solutions

Astronomy & Astrophysics
Context. Ambipolar diffusion is increasingly recognised as a key process in the lower solar atmosphere. Its highly non-linear behaviour has many non-intuitive aspects. Aims.
Moreno-Insertis F., Priest E. R., Nóbrega-Siverio D.   +2 more
doaj   +1 more source

Transcriptional profiling of circulating extracellular vesicles from prebiopsy prostate cancer patients

Molecular Oncology, EarlyView.
RNA profiling of circulating extracellular vesicles (EVs) from blood samples of men undergoing prostate biopsy identifies transcripts associated with clinically significant prostate cancer. Integrative analysis with public tumor datasets links EV‐derived gene signatures to tumor stage and progression‐free survival, highlighting CASP3, XRCC2, and RIT1 ...
Stefan Werner, Pierre Tennstedt, Randi C. Pose, Christian Müller, Katharina Besler, Svenja Schneegans, Malik Alawi, Marie C. Roesch, Sven Peine, Desiree Bonci, Joanna Budna‐Tukan, Evi Lianidou, Catherine Alix‐Panabières, Derya Tilki, Klaus Pantel   +14 more
wiley   +1 more source

Astrophysical particle acceleration mechanisms in colliding magnetized laser-produced plasmas

, 2017
Significant particle energization is observed to occur in numerous astrophysical environments, and in the standard models, this acceleration occurs alongside energy conversion processes including collisionless shocks or magnetic reconnection.
J. Park, Fox, W, W. Deng, A. Spitkovsky, Spitkovsky, Anatoly, Deng, W, A. Bhattacharjee, W. Fox, Fiksel, G, Bhattacharjee, Amitava, Park, J, G. Fiksel   +11 more
core   +1 more source