Results 131 to 140 of about 5,107,868 (362)

High‐Performance 3D Printed Mechanically Interlocked Soft–Hard Interfaces of Hydrogels and Polylactide

Advanced Materials Technologies, EarlyView.
In this work, a methodology is presented for the design, fabrication and characterization of soft–hard interfaces consisting of extremely soft hydrogel biomaterials, and much harder rigid polymeric biomaterials. This approach enables the production of interfaces with performances close to predicted values, with applications in biomaterial fabrication ...
L.B. Kunkels, M. Cruz Saldívar, N.E. Putra, C. Pitta Kruize, S. Panahkhahi, M.A. Leeflang, L.E. Fratila‐Apachitei, A.A. Zadpoor, M.J. Mirzaali   +8 more
wiley   +1 more source

Distinct cerebral cortical perfusion patterns in idiopathic normal‐pressure hydrocephalus

Human Brain Mapping, Volume 44, Issue 1, Page 269-279, January 2023., 2023
The present study investigates cerebral blood flow (CBF) and cortical thickness using surface‐based analysis of early‐phase 18F‐florbetaben PET and MRI in patients with idiopathic normal‐pressure hydrocephalus (INPH). INPH patients had significantly increased CBF with a concomitant increase in cortical thickness in areas located in the high convexity ...
Kyunghun Kang, Shin Young Jeong, Ki‐Su Park, Myong Hun Hahm, Jaeil Kim, Ho‐Won Lee, Chi‐Hun Kim, Eunkyeong Yun, Jaehwan Han, Uicheul Yoon, Sang‐Woo Lee   +10 more
wiley   +1 more source

Enantio‐ and Diastereoselective Synthesis and Spiral‐Stair‐Like Single Helix Assembly of Figure‐Eight Cyclophenylenes

Angewandte Chemie, EarlyView.
We present here the enantio‐ and diastereoselective synthesis of chiral figure‐eight [10]cyclophenylenes via the rhodium‐catalyzed four consecutive intramolecular [2 + 2 + 2] cycloadditions of dodecaynes with two flexible biphenyl units, resulting in increased rotational freedom of the reaction intermediates.
Kohei Adachi, Juntaro Nogami, Daisuke Hashizume, Daiki Tauchi, Masashi Hasegawa, Ken Tanaka   +5 more
wiley   +2 more sources

Levi-Civita Ricci-Flat Doubly Warped Product Hermitian Manifolds

Advances in Mathematical Physics, 2022
Let M1,g and M2,h be two Hermitian manifolds. The doubly warped product (abbreviated as DWP) Hermitian manifold of M1,g and M2,h is the product manifold M1×M2 endowed with the warped product Hermitian metric G=f22g+f12h, where f1 and f2 are positive ...
Qihui Ni, Yong He, Jinhua Yang, Hui Zhang   +3 more
doaj   +1 more source

Multiply Warped Products with a Quarter-symmetric Connection [PDF]

arXiv, 2014
In this paper, we study the Einstein warped products and multiply warped products with a quarter-symmetric connection. We also study warped products and multiply warped products with a quarter-symmetric connection with constant scalar curvature. Then apply our results to generalized Robertson-Walker spacetimes with a quarter-symmetric connection and ...
arxiv  

Electrophotographic Powder Application for Surface Functionalization of Polymer Parts with Thin Silver‐Nanoadditivated Bactericidal Layers

Advanced Materials Technologies, EarlyView.
Polyamide 12 powder nanoadditivated with laser‐synthesized silver nanoparticles is deposited and sintered on polymer parts via EPA‐PBF‐LB/P. The thin surface coating (140 µm) inhibits E. coli and S. aureus bacteria growth and significantly increases the UV light absorption, whereas the mechanical and thermal properties remain unchanged due to minimal ...
Jan Lino Kricke, Niklas Ebert, Ane Sorarrain, Stephan Roth, Dagmar Fischer, Michael Schmidt, Bilal Gökce, José María Marimón, Sebastian‐Paul Kopp, Carlos Doñate‐Buendía   +9 more
wiley   +1 more source

Notes on submanifolds in warped products

Journal of Mathematical Analysis and Applications, 2012
AbstractIn this paper, we study submanifolds in the warped product M×fR, where M is a Riemannian manifold, f is the warping function. We investigate the graphs with positive Gaussian curvature in M2×R, the minimal graphs in M×fR and the totally geodesic submanifolds in M×fR.
openaire   +2 more sources

A DDVV INEQUALITY FOR SUBMANIFOLDS OF WARPED PRODUCTS [PDF]

Bulletin of the Australian Mathematical Society, 2017
We prove a DDVV inequality for submanifolds of warped products of the form $I\times _{a}\mathbb{M}^{n}(c)$, where $I$ is an interval and $\mathbb{M}^{n}(c)$ is a real space form of curvature $c$. As an application, we give a rigidity result for submanifolds of $\mathbb{R}\times _{e^{\unicode[STIX]{x1D706}t}}\mathbb{H}^{n}(c)$.
openaire   +4 more sources

Ricci Solitons on Multiply Warped Product Manifolds

, 2020
In the last years, many researchers focused to Einstein metrics and some similar structures that are called Einstein type metrics. One of the most famous among these are Ricci solitons.
D. Kaya, L. Onat
semanticscholar   +1 more source

Beyond 3D: Smart Material Systems for Microscale 4D Printing

Advanced Materials Technologies, EarlyView.
Smart materials exhibit shape changes in response to their environment, enabling scientists to go beyond 3D in the rapidly growing field of 4D printing. This review covers recent advances, current challenges, and emerging trends in 4D printing on the microscale.
Daniel Maher, Marcin Piekarczyk, Babak Rezaei, Ada‐Ioana Bunea   +3 more
wiley   +1 more source