Results 61 to 70 of about 93,534 (317)

Dual‐Functional Polyphosphoesters for Gene Delivery: Synergistic Effects of Guanidinium and Hydrophobic Side Chains in Degradable Polymers

Advanced Healthcare Materials, EarlyView.
This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche, Andreas Dzierza, Jan Egger, Timo Rheinberger, Christin Weilandt, Frederik R. Wurm, Ivo Nischang, Dagmar Fischer, Kalina Peneva   +8 more
wiley   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Understanding the effects of the core on the nutation of the Earth

Geodesy and Geodynamics, 2017
In this review paper, we examine the changes in the Earth orientation in space and focus on the nutation (shorter-term periodic variations), which is superimposed on precession (long-term trend on a timescale of years).
Véronique Dehant, Raphael Laguerre, Jérémy Rekier, Attilio Rivoldini, Santiago Andres Triana, Antony Trinh, Tim Van Hoolst, Ping Zhu   +7 more
doaj   +1 more source

Printed 2.5D‐Microstructures with Material‐Specific Functionalization for Tunable Biosensing

Advanced Materials Technologies, EarlyView.
The 2.5D‐MiSENSE platform integrates a microstructured biosensor with an in‐line milking pipeline to enable real‐time detection of mastitis biomarkers during active milk flow. The system uses a 2.5D microengineered surface and patterned electrodes to enhance milk–sensor interaction.
Matin Ataei Kachouei, Benjamin Corl, Md. Azahar Ali   +2 more
wiley   +1 more source

Chandler Wobble and Free Core Nutation: Theory and Features

Journal of Astronomy and Space Sciences, 2019
Being a torque free motion of the rotating Earth, Chandler wobble is the major component in the Earth’s polar motion with amplitude about 0.05-0.2 arcsec and period about 430-435 days.
Sungho Na, Kyoung-Min Roh, Jungho Cho
doaj   +1 more source

Detection of Phase Jumps of Free Core Nutation of the Earth and their Concurrence with Geomagnetic Jerks [PDF]

, 2004
We detected phase jumps of the Free Core Nutation (FCN) of the Earth directly from the analysis of the Very Long Baseline Interferometer (VLBI) observation of the Earth rotation for the period 1984-2003 by applying the Weighted Wavelet Z-Transform (WWZ ...
A Toomre, C M Cox, D Gabor, D Gibert, E Bellanger, E Bellanger, F Roosbeek, G Foster, I Wardinski, J Getino, J Hinderer, K Lambeck, M L Huy, M L Huy, M Mandea, P M Mathews, T Sasao, T Sato, T Shirai, T Shirai, V Dehant   +20 more
core   +3 more sources

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

Advanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang, Zonghao Zuo, Haoxuan Wang, Bin Liu, Yilidusi Yilihamu, Li Wen   +5 more
wiley   +1 more source

Vibration Analysis and Active Control of Rotor Shaft in Magnetically Suspended Air-Blower

Machines, 2022
An air-blower with active magnetic bearings could improve working efficiency and reduce energy consumption by avoiding contact between the rotor shaft and the stator part.
Lingbo Zheng, Wansheng Nie, Biao Xiang
doaj   +1 more source

Application of Optimal Control to CPMG Refocusing Pulse Design

, 2010
We apply optimal control theory (OCT) to the design of refocusing pulses suitable for the CPMG sequence that are robust over a wide range of B0 and B1 offsets. We also introduce a model, based on recent progress in the analysis of unitary dynamics in the
Baum, Biercuk, Blume-Kohout, Bryson, Bãlibanu, Böhlen, Böhlen, Cappellaro, Carr, Chakrabarti, Choi, Connolly, David G. Cory, de Graaf, Ellett, Ernst, Fortunato, Freeman, Fu, Garwood, Geen, Glaser, Goelman, Havel, Havel, Hodges, Hwang, Hürlimann, Hürlimann, Khaneja, Khodjasteh, Kobzar, Kraus, Kupcé, Levitt, Luy, Mao, Martin D. Hürlimann, Meiboom, Meriles, Nielsen, Perlo, Pinch, Pontryagin, Pravia, Rabitz, Rosenfeld, Ryan, Sage, Skinner, Skinner, Skinner, Smith, Troy W. Borneman, Viola, Waugh   +55 more
core   +1 more source

Biohybrid Tendons Enhance the Power‐to‐Weight Ratio and Modularity of Muscle‐Powered Robots

Advanced Science, EarlyView.
Biohybrid robots powered by skeletal muscle actuators are capable of dynamically adapting to environmental cues. This study takes inspiration from native muscle–tendon architecture by leveraging tough hydrogels as synthetic tendons for muscle actuators to enhance the power‐to‐weight ratio and modularity of biohybrid machines.
Nicolas Castro, Ronald Heisser, Maheera Bawa, Bastien Aymon, Sarah Wu, Annika Marschner, Sonika Kohli, Angel Bu, Laura Rosado, Martin Culpepper, Xuanhe Zhao, Ritu Raman   +11 more
wiley   +1 more source