Results 121 to 130 of about 3,352,928 (273)

Up to 16% Optical Carbon‐13 Hyperpolarization of Donor–Acceptor Molecules at 14.1 T

Angewandte Chemie, EarlyView.
Up to 16% 13C nuclear polarization is achieved using a rationally designed photo‐CIDNP polarizing agent (PA) in magic‐angle‐spinning NMR experiments at 14.1 T. The PA was designed using a combination of theoretical photocycle calculations and magnetic field dependent experiments to identify important new design principles.
Marcel Levien, Máté Visegrádi, Ganesan Karthikeyan, Gilles Casano, Christian Reiter, Sebastian Wegner, Armin Purea, Michael R. Wasielewski, Federico De Biasi, Olivier Ouari, Lyndon Emsley   +10 more
wiley   +2 more sources

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source

Contact Force Estimation in Human–Robot Collaboration: A Case Study on Heavyweight Robotic Manipulators

Advanced Intelligent Systems, EarlyView.
The method presented in this paper provides a practical sensorless solution for estimating both contact force and contact location using only standard joint encoders and an available robot dynamic model. By reformulating the contact estimation problem using a single scalar equivalent contact parameter, the approach enables fast and robust computation ...
Thanh‐Quan Ta, Shyh‐Leh Chen
wiley   +1 more source

Comparison of Mobility Method and Mass Conservation Method in a Study of Dynamically Loaded Journal Bearings

International Journal of Rotating Machinery, 2002
Biao Yu, Jerzy T. Sawicki
doaj   +1 more source

Modelling methodology of atrial fibrosis affects rotor dynamics and electrograms. [PDF]

Europace, 2016
Roney CH, Bayer JD, Zahid S, Meo M, Boyle PM, Trayanova NA, Haïssaguerre M, Dubois R, Cochet H, Vigmond EJ.   +9 more
europepmc   +1 more source

Modal Analysis of the Rotor-Journal Bearing System of Rotary Compressor [PDF]

, 2012
In the rotary compressor, the rolling piston and the contacted rotor-journal bearing system are basically moving components. Because of the inertia forces and the periodically changing gas force acting on the rolling piston and the rotor, the journal ...
Feng, Quanke, Yu, Xiaoling, Wang, Zengli, Zhang, Fangyuan   +3 more
core  

Long-Range and Coupled Rotor Dynamics in NO₂-MIL-53(Al) by Classical Molecular Dynamics. [PDF]

J Phys Chem C Nanomater Interfaces
Mula S, Bierkens J, Vanduyfhuys L, van der Veen MA.   +3 more
europepmc   +1 more source

Streamline and Isotherm Visual Analysis of Darcy–Forchheimer von Karman Spinning Flow of Maxwell Fluid Over a Stretching Disk With Quadratic Temperature‐Dependent Heat Source

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Mustafa Bayram, Jihad Younis, Anwar Saeed   +6 more
wiley   +1 more source

Cryo‐EM Analysis of Adenovirus Vector Reveals Purification Conditions Leading to Loss of Viral Fiber Proteins and Reduced Infectivity

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Vaccines and gene therapies require efficient delivery of genetic material to host cells. Viral vectors leverage viruses' ability to enter host cells to achieve this. Following the SARS‐CoV‐2 vaccine and novel gene therapies that utilize adenovirus vectors, there has been an increase in the demand for large‐scale production of vectors.
Betsy Widdicombe, Joseph D. Barritt, Nichakorn Pipatpadungsin, Braulio Carrillo Sanchez, Dale Stibbs, Lisa Cooper, Sarah L. Rouse, Daniel G. Bracewell   +7 more
wiley   +1 more source

Multi‐Scale Investigation of Supramolecular Organogels Assembled From Pt(II)‐Salphen Complexes

Chemistry – A European Journal, EarlyView.
A family of Pt(II)‐salphen complexes with long alkyl chains is investigated as low‐molecular‐weight organogelators. Multi‐scale characterization of their supramolecular gels reveals how the chain length, Pt‐Pt interactions, and π–π stacking direct self‐assembly and tune gel mechanics.
Pablo Msellem, Davide Condotta, Lise‐Marie Chamoreau, Mickaël Pomes‐Hadda, Nathan J. Van Zee, Cédric Lorthioir, Clément Guibert, Guillaume Vives   +7 more
wiley   +1 more source