Results 91 to 100 of about 100,249 (259)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Null controllability of nonlinear control systems governed by coupled degenerate parabolic equations

Electronic Journal of Differential Equations, 2019
This article concerns the null controllability of a nonlinear control system governed by coupled degenerate parabolic equations. We first establish the Carleman estimate and the observability inequality for solutions to the conjugate problem.
Fengdan Xu, Jingxue Yin, Mingjun Zhou, Qian Zhou   +3 more
doaj  

Rational Design of Inverted F‐Type Heterojunctions for Photocatalytic Emerging Contaminant Degradation

Carbon Energy, EarlyView.
The inverted F‐type ZnWO4/In2S3 heterojunction enables efficient charge separation and retention of strong oxidative capability through interfacial electric field regulation, leading to non‐toxic degradation of contaminants for sustainable water treatment.
Yanxian Jin, Yali Du, Huiqing Lv, Sónia A.C. Carabineiro, Chenglin Wu, Min‐Quan Yang, Yu‐Ming Zheng, Xianqiang Xiong, Zhangxin Chen, Bo Weng   +9 more
wiley   +1 more source

Nonlinear Elliptic Systems and Nonlinear Parabolic Systems [PDF]

Journal of Applied Mathematics, 2014
Wei, Li, Lau, Anthony To-Ming, Gao, Hongya, Fang, Zhongbo   +3 more
openaire   +3 more sources

High Thermoelectric Performance Achieved by Manipulating the Band Structure and Lattice Dislocations in n‐Type Ge/Pb/Br Codoped Polycrystalline SnSe

Carbon Energy, EarlyView.
Pb/Ge/Br codoping in n‐type polycrystalline SnSe induces band convergence and high‐density dislocations, yielding a high power factor of 7.47 μW cm−1 K−2 and ultralow lattice thermal conductivity. Consequently, a peak ZT of 1.6 is achieved, overcoming the traditional performance limitations of n‐type SnSe.
Pubao Peng, Yang Geng, Jiajun Nan, Song Li, Dewei Zhang, Qing Lin, Yaru Gong, Guodong Tang   +7 more
wiley   +1 more source

Advanced control of non‐isothermal axial dispersion tubular reactors with recycle‐induced state delay

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract We develop a delay‐aware estimation and control framework for a non‐isothermal axial dispersion tubular reactor modelled as a coupled parabolic‐hyperbolic PDE system with recycle‐induced state delay. The infinite‐dimensional dynamics are preserved without spatial discretization by representing the delay as a transport PDE and adopting a late ...
Behrad Moadeli, Stevan Dubljevic
wiley   +1 more source

Modeling Heavy Metal Sorption and Interaction in a Multispecies Biofilm

Mathematics, 2019
A mathematical model able to simulate the physical, chemical and biological interactions prevailing in multispecies biofilms in the presence of a toxic heavy metal is presented.
Berardino D’Acunto, Luigi Frunzo, Vincenzo Luongo, Maria Rosaria Mattei   +3 more
doaj   +1 more source

Box–Behnken optimization and ANN‐ANFIS integrated modelling for transesterification using thermally activated basic oxygen furnace slag catalyst

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Global energy demand and environmental concerns have intensified the search for renewable and sustainable energy sources. This study thus, focuses on optimizing the transesterification process of waste cooking oil (WCO) using thermally activated basic oxygen furnace slag catalyst calcined at 850°C (BOF 850). The optimization and modelling were
Johra S. Ali, Hillary L. Rutto
wiley   +1 more source

Dynamical analysis and exact solitary wave solutions of a (3 + 1)-dimensional Davey–Stewartson system with parabolic law nonlinearity [PDF]

AIP Advances
This paper presents a comprehensive dynamical systems analysis of a generalized (3 + 1)-dimensional Davey–Stewartson equation with parabolic law nonlinearity.
S. Akther, M. G. Hafez, T. A. Min
doaj   +1 more source

Strong bounded solutions for nonlinear parabolic systems

, 2014
Summary: We study the existence of strong bounded solutions for nonlinear parabolic systems on a domain which is bounded in space and unbounded in time (namely the entire real line). We use nonlinear iteration arguments combined with some a priori estimates to derive the existence results.
Mavinga, Nsoki, Nkashama, M. N.
openaire   +1 more source