Results 21 to 30 of about 28,501 (136)

Quasi-Quantum Groups, Knots, Three-Manifolds, and Topological Field Theory

, 1992
We show how to construct, starting from a quasi-Hopf algebra, or quasi-quantum group, invariants of knots and links. In some cases, these invariants give rise to invariants of the three-manifolds obtained by surgery along these links.
A. Alekseev, A. Kirillov, A. Tsuchiya, Antoine Coste, D. Rolfsen, Daniel Altschuler, E. Witten, F. Goodman, G. Felder, G. Keller, G. Mack, G. Moore, H. Davenport, Hua Loo-Keng, J. Fuchs, K. Gawedzki, L. Alvarez-Gaumé, L. Kauffman, M. Atiyah, M. Hennings, M. Walton, N. Reshetikhin, N. Reshetikhin, P. Degiovanni, P. Furlan, P. Hilton, R. Bott, R. Dijkgraaf, R. Dijkgraaf, R. Fenn, R. Kirby, S. Mac Lane, S. Majid, T. Kohno, V. Pasquier, V.G. Drinfeld, V.G. Drinfeld, V.G. Drinfeld   +37 more
core   +1 more source

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

Advanced Robotics Research, EarlyView.
Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira, Liao Wu, Ming Li, Priyank Kumar, Xiaopeng Li, Shi‐Yang Tang   +5 more
wiley   +1 more source

Decay of helical and non-helical magnetic knots

, 2011
We present calculations of the relaxation of magnetic field structures that have the shape of particular knots and links. A set of helical magnetic flux configurations is considered, which we call $n$-foil knots of which the trefoil knot is the most ...
Axel Brandenburg, H. K. Moffatt, Simon Candelaresi   +2 more
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Tim1 Deficiency Mediates Gestational Hyperglycemia‐Related Syncytiotrophoblast Dysfunction and Fetal Growth Restriction

Advanced Science, EarlyView.
Hyperglycemia during pregnancy impairs the fusion of trophoblast cells into syncytiotrophoblasts, leading to fetal growth restriction. This impaired fusion is mediated by Tim1 downregulation via hyperglycemia‐induced ROS. Antioxidant therapy during pregnancy promotes syncytiotrophoblast formation by upregulating Tim1 expression, thus alleviating fetal ...
Junsen She, Rui Liu, Chen Fang, Shuyu Zhang, Yizhi Hu, Fei Guo, Yuhang Long, Mengzhen Ding, Haiyan Wu, Bokang Zhou, Zexin Yang, Ying Jiang, Jianzhong Sheng, Ling Gao, Hefeng Huang   +14 more
wiley   +1 more source

Precision Editing of NLRS Improves Effector Recognition for Enhanced Disease Resistance

Advanced Science, EarlyView.
Precision engineering of plant NLR immune receptors enables rational design of enhanced pathogen resistance through mismatched pairing, domain swapping, and targeted mutagenesis. These approaches achieve multi‐fold expansion in recognition breadth while minimizing autoimmunity risks and fitness penalties.
Vinit Kumar, Vishwa I. P. W. A. Kumara, Pradeepa C. G. Bandaranayake, Dong Yawen, Yang‐Yang Gao, Junfeng Liu, Ge‐Fei Hao, Xiu‐Fang Xin   +7 more
wiley   +1 more source

Characterization of Knots and Links Arising From Site-specific Recombination on Twist Knots

, 2011
We develop a model characterizing all possible knots and links arising from recombination starting with a twist knot substrate, extending previous work of Buck and Flapan. We show that all knot or link products fall into three well-understood families of
Buck D, Burde G, Conway J H, Cox M M, Cozzarelli N R, Craig N, Cromwell P, Darcy I K Ishihara K Medikonduri R Shimokawa K, Dorothy Buck, Karin Valencia, Kawauchi A, Maxwell A, Rolfsen D, Shimokawa K Ishihara K Vazquez M, Valencia K Buck D, Wang James C, Zechiedrich L E   +16 more
core   +1 more source

Navigating the Ethereal Tightrope: The Nanogenerator Manipulates Neurons for Immune Equilibrium

Advanced Science, EarlyView.
This review explores how nanogenerators modulate neuroimmune responses, offering innovative strategies for treating neurological disorders. By interfacing with neural pathways, they enable precise control of immune activity, especially via vagus nerve stimulation.
Jia Du, Rui Deng, Ya Wu, Hong‐Xia Ren, Zong‐Hong Lin, Yang‐Bao Miao   +5 more
wiley   +1 more source

Dead Matter, Living Machines: Repurposing Crustaceans' Abdomen Exoskeleton for Bio‐Hybrid Robots

Advanced Science, EarlyView.
Crustacean exoskeletons, repurposed from food waste, are engineered into sustainable bending actuators combining biotic structure with synthetic control. The augmented exoskeletons achieve rapid and robust motion with lightweight body and can be used as part of robotic manipulators, grippers and swimmers.
Sareum Kim, Kieran Gilday, Josie Hughes
wiley   +1 more source

A Subset of Pro‐inflammatory CXCL10+ LILRB2+ Macrophages Derives From Recipient Monocytes and Drives Renal Allograft Rejection

Advanced Science, EarlyView.
This study uncovers a recipient‐derived monocyte‐to‐macrophage trajectory that drives inflammation during kidney transplant rejection. Using over 150 000 single‐cell profiles and more than 850 biopsies, the authors identify CXCL10+ macrophages as key predictors of graft loss.
Alexis Varin, Jovanne Palvair, Lennie Messager, Jamal Bamoulid, Jasper Callemeyn, Mélanie Chaintreuil, Ludivine Dal Zuffo, Didier Ducloux, Imane Farhat, Mathieu Legendre, Laurent Martin, Florian Renosi, Xavier Roussel, Thibaut Vaulet, Maarten Naesens, Claire Tinel, Baptiste Lamarthée   +16 more
wiley   +1 more source