Results 61 to 70 of about 12,178 (304)
Multi‐Targeting Carnosic Acid Kills Drug‐Resistant Helicobacter pylori With Narrow‐Spectrum Activity
Advanced Science, EarlyView.Carnosic acid selectively eradicates drug‐resistant Helicobacter pylori through a multi‐targeted mechanism involving urease inhibition, membrane disruption, and biofilm eradication. It exhibits no detectable resistance, potent in vivo efficacy, and minimal impact on gut microbiota, positioning it as a promising narrow‐spectrum lead compound against ...
Yuefan Bai +7 more
wiley +1 more source
Three-Dimensional Reconstruction of Impact Crater Morphology During the Impact Process
IEEE AccessEmploying continuous medium three-dimensional reconstruction technology, this study explores the morphological evolution of crater surfaces during impact processes in the field of particle technology, investigating numerical variations and evolution ...
Yizhuo Zheng +3 more
doaj +1 more source
Atmospheric effects on high-velocity impact cratering in porous sandstones [PDF]
EPJ Web of ConferencesGranular geomaterials feature varied porosity and may possess pore fluids. The interactions between grains, pores, and pore fluids affect the impact dynamics in the material such as the cratering efficiency, ejecta kinetics and crater morphology. In this
Singh Shachi +3 more
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地质科技通报, 2021 At present, there are more than 190 craters have been confirmed on the earth, and most of the simple impact craters with a diameter of less than 1 km are formed by iron impactor.There is a large amount of iron meteorite material around the impact crater ...
Jingyue Cui +4 more
doaj +1 more source
Dynamics of shallow impact cratering
Physical Review E, 2005 We present data for the time-dependence of wooden spheres penetrating into a loose non-cohesive packing of glass beads. The stopping time is a factor of three longer than the time $d/v_\circ$ needed to travel the total penetration distance $d$ at the impact speed $v_\circ$. The acceleration decreases monotonically throughout the impact.
Kamien, Randall D +2 more
openaire +5 more sources
Advanced Science, EarlyView.Neuron‐derived MIF binds VCAM1 on gastric cancer cells and activates ERK/STAT3 signaling, leading to CXCL8 transcription and secretion. Tumor‐derived CXCL8 subsequently stimulates neuronal CXCR2 to enhance MIF production, establishing a self‐amplifying MIF–VCAM1–CXCL8 positive‐feedback loop that promotes perineural invasion, tumor progression, and ...
Xunjun Li +13 more
wiley +1 more source
Dark aeolian sediments in Martian craters: Composition and sources
, 2011 Our research focuses on the mineralogical characteristics of dark sediment deposits in Martian craters (dunes, dune fields, and sand sheets) and their local sediment sources, carried out on the basis of 70 selected localities.
R. Jaumann +7 more
core +1 more source
Formation mechanism of the Lidang circular structure in the Guangxi Province
Earth and Planetary Physics, 2019 The Lidang circular structure in the center of the Guangxi Province is about 8 km in diameter. This structure appears as an abnormal shallow depression that has disturbed the rather harmonic regional joint systems.
Pan Yan +4 more
doaj +1 more source
A steeply-inclined trajectory for the Chicxulub impact
Nature Communications, 2020 The authors here present a 3D model that simulates the formation of the Chicxulub impact crater. Based on asymmetries in the subsurface structure of the Chicxulub crater, the authors diagnose impact angle and direction and suggest a steeply inclined (60°
G. S. Collins +7 more
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THE NEPSKY-1 IMPACT CRATER AND ITS FILL DEPOSITS ON THE BASEMENT ROOF OF THE SIBERIAN PLATFORM
Геодинамика и тектонофизика, 2020 In the Earth studies, discoveries and investigations of impact craters buried beneath thick sediments are sporadic so far and may still remain inefficient, unless geophysical surveys of the areas of interest are initiated. Such studies can provide useful
M. I. Gyokche, A. V. Plyusnin
doaj +1 more source