Results 81 to 90 of about 650,978 (244)

Einstein’s Gyros

Physics in Perspective, 2019
Einstein’s life-long effort to develop a theory that unifies gravitation and electromagnetism was not a purely theoretical enterprise. The technical environment of a gyrocompass factory triggered his search for a novel connection between the rotation of an electrically uncharged body and its magnetic field. The dimensional equality of the electric unit
openaire   +4 more sources

Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens

Advanced Photonics Research, EarlyView.
This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan, Wen Xiao, Minyong Guo, Tong Liu, Huanyang Chen, Jin‐Hui Chen   +5 more
wiley   +1 more source

Einstein e a Filosofia [PDF]

Revista Brasileira de Ensino de Física, 2006
Albert Einstein teve, ao longo de sua vida, um intenso envolvimento com a Filosofia e com filósofos da ciência, fato que marcou de maneira profunda seu modo de fazer Física. Discutimos neste artigo alguns pontos basilares deste seu envolvimento e de seu texto "Física e Realidade".
openaire   +6 more sources

Picomolar Detection of Tau Protein Using 1D Photonic Crystal Biochips for Alzheimer's Disease Diagnosis

Advanced Sensor Research, EarlyView.
Elevated levels of Tau in cerebrospinal fluids or other body fluids are associated with the progression of Alzheimer's disease. An optical technique, based on a dual label‐free and fluorescence operation mode, is developed to detect Tau protein in both standard running buffer and cerebrospinal fluid.
Alberto Sinibaldi, Francesco Chiavaioli, Agostino Occhicone, Norbert Danz, Peter Munzert, Francesco Baldini, Ambra Giannetti, Francesco Michelotti   +7 more
wiley   +1 more source

An Analysis of Elusive Relationships in Floating Zone Growth Using Data Mining Techniques

Advanced Theory and Simulations, EarlyView.
Ultra‐pure silicon single‐crystals can be grown by the Floating Zone (FZ) method. This study investigates intricate relationships between process stability measures and multiple growth parameters by applying data mining techniques on FZ simulations. Regression Trees identified multivariate relationships that help explaining complex interactions between
Lucas Vieira, Robert Menzel, Martin Holena, Natasha Dropka   +3 more
wiley   +1 more source

Almost Einstein and Poincare-Einstein manifolds in Riemannian signature [PDF]

arXiv, 2008
An almost Einstein manifold satisfies equations which are a slight weakening of the Einstein equations; Einstein metrics, Poincare-Einstein metrics, and compactifications of certain Ricci-flat asymptotically locally Euclidean structures are special cases. The governing equation is a conformally invariant overdetermined PDE on a function.
arxiv  

Structural Diversity of Mitochondria in the Neuromuscular System across Development Revealed by 3D Electron Microscopy

Advanced Science, EarlyView.
Mitochondria across the entire neuromuscular system have been comprehensively reconstructed at different developmental stages using 3D electron microscopy. Fundamental structural principles related to synaptic function are preserved across development, and these morphologies are adapted to ensure effective neural circuit function.
J. Alexander Bae, Myung‐kyu Choi, Soungyub Ahn, Gwanho Ko, Daniel T. Choe, Hyunsoo Yim, Ken C. Nguyen, Jinseop S. Kim, David H. Hall, Junho Lee   +9 more
wiley   +1 more source

Coordinated Role of Autophagy and ERAD in Maintaining Neuroendocrine Function by Preventing Prohormone Aggregation

Advanced Science, EarlyView.
By studying the maturation mechanisms of vasopressin (AVP), this manuscript identifies FAM134B‐mediated ER‐phagy as a critical pathway for degrading both aggregated proAVP and the key ERAD component, HRD1. HRD1 induction mitigates proAVP aggregation and support AVP neuron function in the absence of autophagy.
Xuya Pan, Xing He, Su Wu, Na Xiong, Xinyu Hou, Heting Wang, Diane Somlo, Martin Spiess, Haiyang Wang, Jifeng Yang, Chunliang Li, Shasha Li, Wenbin Ma, Yanming Chen, Jun Cui, Ling Qi, Guojun Shi   +16 more
wiley   +1 more source

A curve of nilpotent Lie algebras which are not Einstein nilradicals [PDF]

arXiv, 2008
The only known examples of noncompact Einstein homogeneous spaces are standard solvmanifolds (special solvable Lie groups endowed with a left invariant metric), and according to a long standing conjecture, they might be all. The classification of Einstein solvmanifolds is equivalent to the one of Einstein nilradicals, i.e.
arxiv  

Multiple Interactions in Polar Lead‐Free Perovskites toward Highly Stable X‐Ray Detection

Advanced Science, EarlyView.
In this work, 0D polar lead‐free halide perovskites (R/S‐BPEA)4Bi2I10 (R/S‐BPEA = R/S‐1‐(4‐bromophenyl)ethylammonium) with multiple interactions are successfully constructed by introducing a chiral organic cation BPEA. The devices based on their high‐quality SC exhibit excellent self‐driven X‐ray detection performance and high operational stability ...
Chang Qu, Jianbo Wu, Zeng‐kui Zhu, Qianwen Guan, Huang Ye, Ruiqing Li, Chengshu Zhang, Yaru Geng, Hang Li, Lijun Xu, Haiqing Zhong, Ailin Wang, Chengmin Ji, Zhenyue Wu, Junhua Luo   +14 more
wiley   +1 more source