Results 61 to 70 of about 104,140 (248)

Curves in Archeology: Computing the Volume of a Greek Vase

Metrology
The concept of dynamic symmetry in art and extensive measurements on Greek vases suggest that a vase and its parts can be inscribed into similar rectangles, with all rectangles having the same ratio of lengths of their side.
Siddhant Shah, Minfei Liang, Eugene Pinsky   +2 more
doaj   +1 more source

AI‐Assisted Engineering of Glycyrrhizic Acid/Simvastatin Nanocrystals for Multifunctional Treatment of Bacterial Osteomyelitis

Advanced Science, EarlyView.
Through AI‐assisted screening from FDA‐approved API to overcome the limitations of bacterial osteomyelitis treatment, glycyrrhizic acid and simvastatin are identified as a multifunctional combination capable of self‐assembling into mechanism‐targeting nanocrystals that effectively neutralize reactive oxygen species, suppress M1 macrophage polarization,
Yu Han, Yao Zhao, Chengbo Yang, Miao Niu, Jun Dai, Quanxin Ning, Kai Xiao, Jinzheng Liang, Wensheng Zhang, Liang Wang, Dan Shao, Dongsong Li   +11 more
wiley   +1 more source

Sinusoidal spirals

, 2016
trigonometric functions, hyperbolas, parabolas, cardioids,lemniscates, logarithmic spiralSinusoidal spirals are given by the equation r^s=a^s(cos(s.t)), where s is rational.
Morris, Rob
core   +2 more sources

A New View of the Spiral Structure of the Northern Outer Milky Way in Carbon Monoxide

The Astrophysical Journal Letters
Based on 32,162 molecular clouds from the Milky Way Imaging Scroll Painting project, we obtain new face-on molecular gas maps of the northern outer Galaxy. The total molecular gas surface density map reveals three segments of spirals, extending 16–43 kpc
Yan Sun, Ji Yang, Shaobo Zhang, Qing-Zeng Yan, Yang Su, Xuepeng Chen, Xin Zhou, Ye Xu, Hongchi Wang, Min Wang, Zhibo Jiang, Ji-Xian Sun, Deng-Rong Lu, Bing-Gang Ju, Xu-Guo Zhang, Min Wang   +15 more
doaj   +1 more source

The logarithmic spiral: a counterexample to the K = 2 conjecture

Annals of Mathematics, 2005
Let \(\Omega\) be an open simply connected subset of the complex plane \({\mathbb C}\) with \(\Omega\not={\mathbb C}\), let \(X=S^2\setminus \Omega\) be the complement of \(\Omega\) in the Riemann sphere \(S^2\) and let \({\mathcal {CH}}(X)\) be the hyperbolic convex hull of \(X\) in hyperbolic 3-space \({\mathbb H}^3\).
Epstein, D. B. A., Markovic, V.
openaire   +2 more sources

Pyrazole‐Derived Antibacterial Compounds Effectively Treat Methicillin‐Resistant Staphylococcus Aureus Infections by Inhibiting Aspartate Transcarbamoylase

Advanced Science, EarlyView.
This study unveils a novel antibacterial mechanism against MRSA, in which the compound Py‐27 selectively targets and inhibits aspartate transcarbamoylase (ATCase), a key enzyme in pyrimidine synthesis. This inhibition disrupts DNA replication, induces oxidative damage, leading to potent bactericidal activity.
Xiaorong Yang, Xinyuan Cao, Lixia Dai, Feng Yang, Jing Wang, Yudong Ma, Tong Bu, Zile Gong, Xueyan Liu, Changcai Bai, Xiaolou Miao, Xiaofei Shang   +11 more
wiley   +1 more source

Jerky chiral active particles

New Journal of Physics
We introduce jerky chiral active Brownian particles (ABP), a generalization of conventional chiral ABPs subjected to jerk, the time derivative of acceleration, and analytically derive their mean displacement and mean squared displacement.
Stephy Jose, Hartmut Löwen
doaj   +1 more source

Spirals and vertical motions in the planet-forming disk around HD 100546

Astronomy & Astrophysics
Context. The disk around the Herbig star HD 100546 represents a particularly interesting target for the study of dynamical planet–disk interactions, as various features observed in both the dust and gas provide direct and indirect evidence for ongoing ...
Wölfer Lisa, Izquierdo Andrés F., Booth Alice, Facchini Stefano, Teague Richard, van Dishoeck Ewine F., Paneque-Carreño Teresa, Dent Bill   +7 more
doaj   +1 more source

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping

Advanced Science, EarlyView.
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Alec Boron, Bokun Zheng, Ziyang Zhou, Noel Naughton, Suyi Li   +4 more
wiley   +1 more source

Engineered Xenogeneic Bone Scaffold with IL‐10 Nanodelivery System: Immunomodulation and BMSC Fate Programming for Skull Defect Repair

Advanced Science, EarlyView.
A multifunctional regenerative composite is constructed by 3D‐printing thermosensitive PNIPAM hydrogel embedded with MPDA@IL‐10 nanoparticles and autologous BMSCs onto antigen‐depleted porcine bone matrix for beagle critical‐sized skull defect reconstruction.
Weihao Lv, Lei Zhang, Fei Fei, Zhibin Wu, Xiuquan Wu, Ya‐nan Dou, Yihao Fu, Hao Chang, Yujie Qiang, Huaxia Xie, Ni An, Leiying Chen, Hongchen Zhang, Min‐Wen Zheng, Hongqing Chen, Xia Li, Zhou Fei   +16 more
wiley   +1 more source