Results 131 to 140 of about 3,849,972 (317)

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Learning-aided observer design for improving autonomous vehicle safety

Scientific Reports
This paper introduces a novel method for the enhancement of automated vehicle safety and efficiency during critical manoeuvres. The fundamental of the presented method is the observer design architecture, in which lateral dynamic states of the vehicle ...
András Mihály, Balázs Németh, Mihály Kopasz, Péter Gáspár, Ferenc Szauter   +4 more
doaj   +1 more source

Second special section on systems and control research efforts against COVID-19 and future pandemics. [PDF]

Annu Rev Control, 2021
Hernandez-Vargas EA, Giordano G, Sontag E, Chase JG, Chang H, Astolfi A.   +5 more
europepmc   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

An effective robot selection and recharge scheduling approach for improving robotic networks performance

Scientific Reports
With the ability of servers to remotely control and manage a mobile robot, mobile robots are becoming more widespread as a form of remote communication and human-robot interaction.
Shimaa E. ElSayyad, Ahmed I. Saleh, Hesham A. Ali, M. S. Saraya, Asmaa H. Rabie, Mohamed M. Abdelsalam   +5 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Predictive hybrid redundancy using exponential smoothing method for safety critical systems

, 2008
As many systems depend on electronics, concern for fault tolerance is growing rapidly. For example, a car with its steering controlled by electronics and no mechanical linkage from steering wheel to front tires (steer-by-wire) should be fault tolerant ...
Lee, Kyung Chang, Kim, Man Ho, Lee, Suk
core  

Exponential stabilization of a class of underactuated mechanical systems using dynamic surface control

, 2007
This paper proposes a simpler solution to the stabilization problem of a special class of nonlinear underactuated mechanical systems which includes widely studied benchmark systems like Inertia Wheel Pendulum, TORA and Acrobot.
Hussain, Amir, AMIR HUSSAIN, NAEEM IQBAL, Qaiser, Naeem, Iqbal, Naeem, NAEEM QAISER, Qaiser, Nadeem, NADEEM QAISER   +7 more
core   +1 more source

Multi-layer perceptron-particle swarm optimization: A lightweight optimization algorithm for the model predictive control local planner

International Journal of Advanced Robotic Systems
The model predictive control trajectory planner is a popular and effective robot local motion planner. However, it is challenging to satisfy real-time requirements and implement them on embedded platforms due to their high complexity of solving and ...
Xiaoqing Guan, Tao Hu, Ziang Zhang, Yixu Wang, Yifan Liu, You Wang, Jie Hao, Guang Li   +7 more
doaj   +1 more source

Radiographic and fluoroscopic X-ray systems: Quality control of the X-ray tube and automatic exposure control using theoretical spectra to determine air kerma and dose to a homogenous phantom. [PDF]

J Appl Clin Med Phys, 2021
Konst B, Nøtthellen J, Bilet E, Båth M.   +3 more
europepmc   +1 more source