Results 131 to 140 of about 1,825,811 (307)

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

Advanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger, Johann Schorzmann, Hsuan‐Heng Lu, Muhammad Osama, Julian Bauer, Michael Haug, Oliver Friedrich, Aldo R. Boccaccini, Frank Döpper, Sahar Salehi   +9 more
wiley   +1 more source

Fault-Tolerant Control of Quadrotors with Actuator Faults: Experimental Verification of a Backstepping-Based Adaptive Controller

Actuators
In many unmanned aerial vehicle (UAV) applications, achieving stable flight despite actuator failures is crucial. Among the many existing fault-tolerant control (FTC) methods, adaptive control is a practical approach.
Yasuyuki Satoh, Anan Tabata
doaj   +1 more source

Design of an Attitude Control System for a Stereo-Imagery Satellite with Combining of Along-Track and Across-Track Configurations [PDF]

فصلنامه علوم و فناوری فضایی, 2008
In this paper, the main stereo-imaging methods by high resolution satellites, including Along-Track and Across-Track, have been evaluated and then we will combine the two main stereo-imaging configurations of along track and across track as a new idea to
H. Bolandi, F. Fani- Saberi, B. Ghorbani-Vaghei   +2 more
doaj  

Attitude stabilization of a rigid spacecraft using two momentum wheel actuators [PDF]

It is well known that three momentum wheel actuators can be used to control the attitude of a rigid spacecraft and that arbitrary reorientation maneuvers of the spacecraft can be accomplished using smooth feedback. If failure of one of the momentum wheel
Krishnan, Hariharan, Mcclamroch, N. Harris, Reyhanoglu, Mahmut   +2 more
core   +1 more source

Direct Gravity‐Induced Modulation of Cardiac Conduction Pathways Evidenced Through Propagation Features in Electrophysiological Mapping

Advanced Materials Technologies, EarlyView.
A high‐density wearable body‐surface potential mapping array reveals how gravity reshapes cardiac conduction in real time. By resolving spatiotemporal delay patterns invisible to conventional ECG, the platform uncovers posture‐dependent electrophysiological adaptations across the thorax.
Ruben Ruiz‐Mateos Serrano, Matias L. Picchio, Daniele Mantione, David Mecerreyes, George G. Malliaras   +4 more
wiley   +1 more source

Attitude Control of Over-Actuated Fixed-Wing Aircraft Based on Predefined Time Control

Aerospace
This paper presents a novel predefined-time attitude-control framework for fixed-wing aircraft with over-actuated systems, solving aerodynamic uncertainties and nonlinear couplings during high-angle-of-attack flight. The proposed methodology integrates a
Fangping Chen, Pengfei Li, Hainuo Chen, Xuebin Ni, Jingjing Pan, Tingting Guo, Limin Bai, Junying Ma, Qu Wang   +8 more
doaj   +1 more source

Designing, Testing and Evaluation of Single Gimbal Control Moment Gyro for Microsatellite [PDF]

فصلنامه علوم و فناوری فضایی, 2009
In this paper, a designing procedure of Single Gimbal Control Moment Gyro (SGCMG) for performing an agile slew maneuver in a microsatellite is described, then a prototype is fabricated and finally the test results are presented.
A. R. Aghalari, A. Kalhor, S. M. Dehghan, A. Abedian   +3 more
doaj  

Buckling‐Driven Linearity in Flexible Capacitive Pressure Sensors Based on a Three‐Dimensional Dual‐Pore Polyurethane Structure

Advanced Materials Technologies, EarlyView.
A flexible pressure sensor utilizing a 3D dual‐pore polyurethane structure is developed to overcome the intrinsic trade‐off between sensitivity and linearity. By inducing sequential buckling through distinct pore sizes and shapes, the device achieves highly linear and sensitive responses across a wide pressure range.
Jae Yeong Jang, Jaemin Choi, Young Jung
wiley   +1 more source

Soft Robotic Excretory Care Simulator for Nursing Education: Functional and Perceptual Biomimetics Approach

Advanced Robotics Research, EarlyView.
A soft robotic simulator is developed to replicate the digital removal of feces (DRF), a sensitive yet essential nursing procedure. Integrating soft actuators, sensors, and a realistic rectal model, the simulator balances functional fidelity with perceptual realism. Engineering evaluations and nurse feedback confirm its potential to enhance training in
Shoko Miyagawa, Sota Suzuki, Shizuka Watanabe, Zebing Mao, Young Ah Seong, Toshinori Fujie, Tatsuhiro Horii, Kenjiro Tadakuma, Koichi Suzumori, Hiroyuki Nabae, Shingo Maeda   +10 more
wiley   +1 more source

Constrained Attitude Stabilization and Synchronization of Multi-Combined Spacecraft via Disturbance Observer

Applied Sciences
This work investigates the attitude stabilization and synchronization problem for multi-combined spacecraft with time-varying inertia parameters, external disturbances, and input constraints.
Xianglong Kong, Jianqiao Zhang, Wenlong Li, Guangfu Ma   +3 more
doaj   +1 more source