Results 131 to 140 of about 15,943 (261)

Soliton, quasi-soliton, and their interaction solutions of a nonlinear (2 + 1)-dimensional ZK–mZK–BBM equation for gravity waves

Open Physics
The ZK–mZK–BBM equation plays a crucial role in actually depicting the gravity water waves with the long wave region. In this article, the bilinear forms of the (2 + 1)-dimensional ZK–mZK–BBM equation were derived using variable transformation. Then, the
Wang Chunxia, Yin Xiaojun, Cao Na, Xu Liyang, Bai Shuting   +4 more
doaj   +1 more source

3D Printing of Highly Dense and Translucent Zirconia Parts for Dental Applications: Effect of Filament Overlapping

Advanced Materials Technologies, EarlyView.
This study formulated a 5Y‐PSZ zirconia paste for extrusion‐based additive manufacturing via direct ink writing, producing dense ceramic structures for dental applications. A colloidal approach with 47 vol% nanometric powder and tailored additives optimized rheology and printability.
Juliana de Freitas Gouveia Silva, Manuel Fellipe Rodrigues Pais Alves, Ana Carolina da Silva, Tiago Moreira Bastos Campos, Renata Marques De Melo, Susana Maria Henriques Olhero   +5 more
wiley   +1 more source

DETERMINING BILATERAL TRADE PATTERNS USING A DYNAMIC GRAVITY EQUATION

Using a dynamic gravity equation, we show that the national product differentiation model explains food and agricultural trade more properly, while the product differentiation model is more appropriate to explain large-scale manufacturing trade.
Kim, MinKyoung, Koo, Won W., Cho, Guedae
core  

From relativistic gravity to the Poisson equation

Journal of High Energy Physics
Abstract We consider the non-relativistic limit of general relativity coupled to a (p+1)-form gauge field and a scalar field in arbitrary dimensions and investigate under which conditions this gives rise to a Poisson equation for a Newton potential describing Newton-Cartan gravity outside a massive p-dimensional extended object, a ...
Eric A. Bergshoeff, Giacomo Giorgi, Luca Romano   +2 more
openaire   +4 more sources

Overcoming Printing and Interfacial Challenges in Liquid Metal Direct Writing for Integrated Stretchable Electronics

Advanced Materials Technologies, EarlyView.
Liquid metal direct writing is advanced from a technological and fundamental point. Utilizing a kinematic bed, printing on large surfaces with irregularities is enabled. Furthermore, a pressure‐driven flow during printing is discovered that affects the thickness of traces.
Maximilian Krack, Lennert Purnal, Parth Vinayakrao Sewlikar, Sam Cuyvers, Gus Geurts, Rathul Nengminza Sangma, Derese Desta, Dieter Reenaers, Bart Ruttens, Iris De Graeve, Tom Hauffman, Seppe Terryn, Bram Vanderborght, Michaël Daenen, Wim Deferme, Monika Rai   +15 more
wiley   +1 more source

‘Dual’ gravity: using spatial econometrics to control for multilateral resistance [PDF]

We propose a quantity-based `dual' version of the gravity equation that yields an estimating equation with both cross-sectional interdependence and spatially lagged error terms.
BEHRENS, Kristian, KOCH, Wilfried, ERTUR, Cem   +2 more
core   +2 more sources

Hamiltonian Equations of Motion of Quadratic Gravity

Fortschritte der Physik
Abstract The equations of motion of the Hamiltonian formulation of quadratic gravity are computed explicitly. This is the theory with the most general Lagrangian with terms of quadratic order in the curvature tensor (discarding the cosmological constant). The symbolic computational tool Cadabra is employed.
openaire   +2 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

An Accessible Microfluidic Platform for the Generation of Polarized Brain Organoids

Advanced Materials Technologies, EarlyView.
This study presents an accessible double‐gradient microfluidic device that enables controlled morphogen delivery and spatially polarized differentiation in brain organoids. By integrating a pump‐free design and stable fabrication method, the platform generates dorsal–ventral neuronal asymmetry, offering a reproducible and versatile approach to model ...
Daniel Pérez‐Calixto, Manuel Alejandro Vazquez Valle, Mitzi Pérez‐Calixto, Cindy Peto‐Gutiérrez, Iván Velasco, Genaro Vázquez‐Victorio, Itzel Escobedo‐Avila   +6 more
wiley   +1 more source

Bogomol’nyi-like equations in gravity theories

The European Physical Journal C
AbstractUsing the Bogomol’nyi–Prasad–Sommerfield Lagrangian method, we show that gravity theory coupled to matter in various dimensions may possess Bogomol’nyi-like equations, which are first-order differential equations, satisfying the Einstein equations and the Euler–Lagrange equations of classical fields (U(1) gauge and scalar fields). In particular
openaire   +3 more sources