Results 171 to 180 of about 72,022 (324)

Chiral multi-curved shell metamaterials integrating compression-torsion and buckling mechanisms for ideal energy absorption. [PDF]

Nat Commun
Liu CX, Zhang Y, Wang X, Yu GL, Zhuang Z, Liu Z.   +5 more
europepmc   +1 more source

Billiards in regular polygons

L’Enseignement Mathématique
In this paper we study billiards in regular n -sided polygons and monodromy over Teichmüller curves from an arithmetic perspective. Our main results show that the combinatorics of billiards in a periodic direction
openaire   +1 more source

Analysis of SWI Complex Subunits in 69 Cases of TTF‐1 Negative Non‐Small Cell Lung Carcinoma

Diagnostic Cytopathology, EarlyView.
ABSTRACT Non‐small cell lung carcinomas, not otherwise specified (NSCLC‐NOS) with a specific signature including high‐grade hepatoid/clear cell morphology, negative lung panel mutational analysis, negative TTF‐1/Napsin A staining can be reported as a morphologic variant of an aggressive carcinoma with loss of one of the subunits of the SWI/SNF ...
Ramin Zargham, Feng (Selina) Ji, Tarek Bismar   +2 more
wiley   +1 more source

Neurodevelopmental Consequences of Maternal Diabetes: Autophagy and Spatial Arrangement of Hippocampal Neurons. [PDF]

CNS Neurosci Ther
Boutegaz SM, Namavar MR, Shadi M, Kabiri-Rad H, Vafaei-Nezhad S.   +4 more
europepmc   +1 more source

A simple method of the formation nondiffracting hollow optical beams with intensity distribution in form of a regular polygon contour [PDF]

, 2014
Alexey P. Porfirev, R. Skidanov
openalex   +1 more source

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

Deep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong, Ning Yang, Yi Jin, Ying Wu, Dandan Liu, Junling Zheng, Jingyan Zhao   +6 more
wiley   +1 more source

Research on the influence of the morphology of coarse aggregates from Reclaimed Asphalt Pavement (RAP) on the mechanical properties of asphalt concrete based on finite element modeling. [PDF]

PLoS One
Ru N, Zhao Y, Liu Z, Li Y, Xia S, Cheng W.   +5 more
europepmc   +1 more source

The configuration space of almost regular polygons

, 2020
Satoru Goto, Kazushi Komatsu, Jun Yagi
openalex   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source

Ancient seabed checkerboard: How setae shaped spatial distributions of Silurian brachiopods. [PDF]

Proc Natl Acad Sci U S A
Huang B, Rong J.
europepmc   +1 more source