Results 71 to 80 of about 2,614,548 (357)

A simple toy model of the advective-acoustic instability I. Perturbative approach

, 2008
Some general properties of the advective-acoustic instability are described and understood using a toy model which is simple enough to allow for analytical estimates of the eigenfrequencies.
Blondin, Blondin, Blondin, Burrows, Burrows, Foglizzo, Foglizzo, Foglizzo, Iwakami, Janka, Laming, Laming, Marek, Murphy, Ohnishi, Sato, T. Foglizzo, Weinberg, Yamasaki   +18 more
core   +1 more source

Simulations of two-planet systems through all phases of stellar evolution: implications for the instability boundary and white dwarf pollution [PDF]

, 2013
Exoplanets have been observed at many stages of their host star's life, including the main sequence (MS), subgiant and red giant branch stages. Also, polluted white dwarfs (WDs) likely represent dynamically active systems at late times.
Bonsor, Amy, Mustill, Alexander J., Veras, Dimitri, Wyatt, Mark C.   +3 more
core   +2 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

A prediction model for surface deformation caused by underground mining based on spatio-temporal associations

Geomatics, Natural Hazards & Risk, 2022
Accurate predictions of the surface deformation caused by underground mining are crucial for the safe development of underground resources. Although surface deformation has been predicted by artificial intelligence (AI) methods, most AI models are ...
Min Ren, Guanwen Cheng, Wancheng Zhu, Wen Nie, Kai Guan, Tianhong Yang   +5 more
doaj   +1 more source

Driven Intrinsic Localized Modes in a Coupled Pendulum Array

, 2007
Intrinsic localized modes (ILMs), also called discrete breathers, are directly generated via modulational instability in an array of coupled pendulums. These ILMs can be stabilized over a range of driver frequencies and amplitudes. They are characterized
A J Sievers, L Q English, Maniadis P, R Basu Thakur, Remoissenet M   +4 more
core   +1 more source

Subtype‐specific enhancer RNAs define transcriptional regulators and prognosis in breast cancers

Molecular Oncology, EarlyView.
This study employed machine learning methodologies to perform the subtype‐specific classification of RNA‐seq data sets, which are mapped on enhancers from TCGA‐derived breast cancer patients. Their integration with gene expression (referred to as ProxCReAM eRNAs) and chromatin accessibility profiles has the potential to identify lineage‐specific and ...
Aamena Y. Patel, Peyman Zarrineh, Nathnael T. Tuffa, Jigar H. Sheth, Sumitra Mohan, Mudassar Iqbal, Sankari Nagarajan   +6 more
wiley   +1 more source

Analysis of Surface Runoff and Ponding Infiltration Patterns Induced by Underground Block Caving Mining—A Case Study

Applied Sciences
Surface subsidence induced by underground mining in mining areas significantly alters surface topography and hydrogeological conditions, forming depressions and fissures, thereby affecting regional runoff-ponding processes and groundwater infiltration ...
Shihui Jiao, Yong Zhao, Tianhong Yang, Xin Wen, Qingshan Ma, Qianbai Zhao, Honglei Liu   +6 more
doaj   +1 more source

Curvature scalar instability in f(R) gravity [PDF]

, 2006
An instability in the presence of matter in theories of gravity which include a 1/R correction in the gravitational action has been found by Dolgov and Kawasaki. In the present paper this instability is discussed for f(R) gravity in general.
Allemandi, Allemandi, Allemandi, Allemandi, Amendola, Amendola, Barrow, Brookfield, Buchbinder, Buchdahl, Capozziello, Capozziello, Capozziello, Capozziello, Carroll, Cembranos, Clifton, Dolgov, Easson, Erickcek, Faraoni, Faraoni, Ferraris, Ferraris, Flanagan, Hehl, Kunstatter, Maeda, Magnano, Navarro, Nojiri, Nojiri, Nojiri, Nojiri, Nojiri, Olmo, Papapetrou, Sotiriou, Sotiriou, Sotiriou, Sotiriou, Sotiriou, Sotiriou, Soussa, Spergel, Starobinsky, Stelle, Teyssandier, Thomas P. Sotiriou, Vollick, Wands, Whitt   +51 more
core   +4 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Integrated Physical Microstructure and Mechanical Performance Analysis of the Failure Mechanism of Weakly Cemented Sandstone Under Long-Term Water Immersion

Applied Sciences
The duration of water immersion significantly affects the mechanical response of rock materials. This study investigated the weakly cemented sandstone from the Wulagen Open-pit Mine to examine how varying immersion times affected the mineral composition,
Honglei Liu, Shixian Zhang, Wenxue Deng, Jinduo Li, Tianhong Yang, Jianhua Zhou   +5 more
doaj   +1 more source