Results 131 to 140 of about 24,584 (285)

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, EarlyView.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Melatonin Alleviates Graft Biliary Fibrosis by Inhibiting VIM+ Cholangiocyte Subcluster via Hypoxia/TGF‐β‐CREM‐VIM Axis

Advanced Science, EarlyView.
Single‐cell RNA sequencing verified the presence of the VIM+ biliary epithelial cell (BEC) in the bile ducts of NAS patients. The hypoxia/TGF‐β‐CREM‐VIM axis mediated phenotypic switch toward VIM+ BEC is validated using a hypoxia/TGF‐β‐stimulated cellular model, a rat liver transplantation model, BEC‐specific Crem conditional knockout rats, and BEC ...
Zhaoyi Wu, Nengsheng Fu, Zhongxin Huang, Yu Mou, Ensi Ma, Xiaoshi Wang, Tian Dong, Yujun Zhang, Danqing Liu, Di Jiang, Jingya Kuang, Rui Liao, Yifeng Tao, Leida Zhang, Chengcheng Zhang   +14 more
wiley   +1 more source

H8 control design for mechanisms with backlash [PDF]

, 2009
An H∞ output feedback control design is presented for mechanisms with backlash, under the presence of external perturbation. Using the static dead-zone model as a simpler model for backlash, the non-linear problem is cast in linear H∞ framework, seeing ...
Acho Zuppa, Leonardo, Pujol Vázquez, Gisela, Ikhouane, Fayçal   +2 more
core   +2 more sources

Calculation of Accurate Meshing Backlash for Cycloidal-pin Wheel Drive in RV Reducer

Jixie chuandong, 2018
The meshing backlash of cycloidal-pin wheel drive in RV reducer is the key factor that affects the transmission performance. At present,the formula method is adopted mainly to calculate the initial meshing backlash of cycloidal-pin wheel.
Yang Jingzhao, Deng Xiaozhong, Li Tianxing, Wang Changlu, Wang Guofeng, Xing Chunrong   +5 more
doaj  

Non-back-drivable clutch based self-locking mechanism of prosthetic joint to improve manipulation stability

Frontiers in Bioengineering and Biotechnology
During activities of daily living (ADLs), the wrist is mainly engaged in positioning and directing the hand. Researches have demonstrated that restoring wrist mobility can significantly enhance the manipulation ability, reduce body distortion caused by ...
Yang Liu, Yuhui Luo, Ting Xiao, Jiejunyi Liang   +3 more
doaj   +1 more source

Africa's Backlash Against International Courts [PDF]

, 2016
The paper is a first chapter of a book being co-authored, entitled The African Backlash Against International CourtsThe paper is a first chapter of a book being co-authored, entitled The African Backlash Against International ...
Gissel, Line Engbo, Brett, Peter
core  

Stem Cell Differentiation Disperses Transcriptional Clusters via a Conserved Surface‐Condensate Trajectory

Advanced Science, EarlyView.
Stem cell differentiation follows a conserved surface condensate trajectory: H3K27ac super enhancers nucleate large RNA polymerase II clusters that grow and unfold before transcriptional activity disperses them. This work reveals how biophysical forces at enhancer surfaces dynamically build and dismantle stem cell transcription hubs, reshaping cell ...
Tim Klingberg, Irina Wachter, Agnieszka Pancholi, Matthias Akyel, Yomna Gohar, Priya Kumar, Ana Miguel Fernandes, Yuzhi Bao, Alica Schmidt‐Heydt, Marcel Piepers, Alicia Günthel, Marcel Sobucki, Elisa Kämmer, Süheyla Eroğlu‐Kayıkçı, Stephan Allgeier, Sylvia Erhardt, Vasily Zaburdaev, Carmelo Ferrai, Lennart Hilbert   +18 more
wiley   +1 more source

FOS3D: A Fluorescence‐Enabled Toolkit for Characterizing a Three‐dimensional Osteosarcoma Model

Advanced Science, EarlyView.
FOS3D describes fluorescent (F) osteosarcoma (OS) cells in a tri‐dimensional (3D) model. The study comprises three phases: development, where biofabrication parameters are tuned to achieve cytocompatibility and tumor‐specific mechanical properties in cell‐laden gelatin methacryloyl constructs; validation, where whole‐well fluorescence reading is ...
William Humble, Wiktor Zywicki, Enrico Lucarelli, Ania Naila Guerrieri, Francesca Taraballi, Gianluca Cidonio, Claudia Di Bella, Carmine Onofrillo, Andrea J. O'Connor, Serena Duchi   +9 more
wiley   +1 more source

Impact of Electrolyte Formulation on the Phase Behavior and Interphase Formation of Sb/Graphite Electrodes for K‐Ion Batteries

Advanced Science, EarlyView.
Electrolyte formulation is shown to govern both interphase chemistry and bulk phase evolution in Sb/graphite anodes for potassium‐ion batteries. A diglyme‐based localized high‐concentration electrolyte promotes a thin inorganic‐rich interphase, suppresses deep graphite potassiation, limits electrode swelling, and stabilizes amorphous KxSb formation ...
Ezzoubair Bendadesse, Max Wacha, Zeynep Erdol, Yanan Sun, Carsten Prinz, Mirko Boin, Manuela Klaus, Tatiana Mishurova, Till Wolfram, Jürgen Janek, Philipp Adelhelm   +10 more
wiley   +1 more source

Compensation of Backlash for High Precision Tracking Control of Inverted Pendulum by Drive-Anti Drive Mechanisms

Engineering Proceedings
Many actuating and electro-mechanical devices are driven by DC motors. Gear trains are used to amplify the torque in these motors. They are used in a wide variety of automotives, robotics, and automation applications. However, gears are prone to backlash
Aisha Akbar Awan, Umar S. Khan
doaj   +1 more source