Results 241 to 250 of about 531,970 (297)

Vortex formation of cardiac bilateral ventricles in fetuses with tetralogy of fallot assessed by blood speckle-tracking echocardiography. [PDF]

BMC Pregnancy Childbirth
Liu Y, Zhou D, Yang Y, Yang P, Song S, Zeng S.   +5 more
europepmc   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Full-parameter-modulated three-dimensional vectorial generalized vortex array. [PDF]

Light Sci Appl
Zhang X, Cui Y, Chen Y, Li X, Li J, Shi W, Chen J, Dong Z, Wang Y, Qiu CW, Zhang S, Huang L.   +11 more
europepmc   +1 more source

Transistor‐Level Activation Functions via Two‐Gate Designs: From Analog Sigmoid and Gaussian Control to Real‐Time Hardware Demonstrations

Advanced Materials, EarlyView.
Screen gate‐based transistors are presented, enabling tunable analog sigmoid and Gaussian activations. The SA‐transistor improves MRI classification accuracy, while the GA‐transistor supports precise Gaussian kernel tuning for forecasting. Both functions are implemented in a single device, offering compact, energy‐efficient analog AI processing ...
Junhyung Cho, Youngmin Han, Won Woo Lee, Youngwoo Yoo, Kannan Udaya Mohanan, Chang‐Hyun Kim, Junhwan Choi, Young‐Joon Kim, Wonjun Shin, Hocheon Yoo   +9 more
wiley   +1 more source

Longitudinal observation of left ventricular inflow reorientation with preserved vorticity after myocardial infarction in a porcine model. [PDF]

Front Cardiovasc Med
Park S, Ahn Y, Kwon M, Koo HJ, Yang DH, Huh H.   +5 more
europepmc   +1 more source

Stable vortices in the anomalous metallic state observed on monoatomic-layer superconductors. [PDF]

Sci Adv
Sato Y, Haze M, Nemoto R, Qian W, Yoshizawa S, Uchihashi T, Hasegawa Y.   +6 more
europepmc   +1 more source

KTaO₃-Based Supercurrent Diode. [PDF]

Nano Lett
Yu M, Kim J, Omran A, Li Z, Yang J, Biswas S, Eom CB, Pekker D, Irvin P, Levy J.   +9 more
europepmc   +1 more source

Abnormal vortex formation by 4D flow MRI as a marker for aortic valve replacement in moderate aortic stenosis: an exploratory study. [PDF]

Open Heart
Park S, Yi JE, Kim SH, Lee BY, Ha H, Barker AJ, Huh H.   +6 more
europepmc   +1 more source

Vehicle Aerodynamic Noise: A Systematic Review of Mechanisms, Simulation Methods, and Bio-Inspired Mitigation Strategies. [PDF]

Biomimetics (Basel)
Zou T, Fu Y, Cao P.
europepmc   +1 more source