Results 21 to 30 of about 23,573 (262)

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Challenges of inversely estimating Jacobian from metabolomics data

Frontiers in Bioengineering and Biotechnology, 2015
Inferring dynamics of metabolic networks directly from metabolomics data provides a promising way to elucidate the underlying mechanisms of biological systems, as reported in our previous studies [1-3] by a differential Jacobian approach. The Jacobian is
Xiaoliang eSun, Xiaoliang eSun, Bettina eLänger, Bettina eLänger, Wolfram eWeckwerth   +4 more
doaj   +1 more source

Dual‐Interface‐Dominant Cathode Architectures Enabling Fast Sulfur Redox and Stable Interfaces in All‐Solid‐State Li‐S Batteries

Advanced Functional Materials, EarlyView.
An optimized carbon host nanostructure enables a dual‐interface‐dominant architecture in sulfur cathodes of solid‐state Li‐S batteries by selectively forming sulfur|carbon and sulfur|solid electrolyte interfaces. This tailored interfacial configuration accelerates sulfur redox kinetics by establishing enriched Li+/e– transport networks, while ...
Zhao Yang, Yuxiao Zhang, Yihong Liu, Geng Xie, Yu Dou, Jeremy Dawkins, Lijia Liu, Yixiang Wang, Lingzi Sang, Mohsen Shakouri, Sixu Deng, Karim Zaghib, Tsun‐Kong Sham, Xia Li   +13 more
wiley   +1 more source

ADAPTIVE NEURAL STABILIZATION OF ILL-POSED SPECTRAL PROBLEMS

Компютерні системи та інформаційні технології
The article develops a mathematical model of adaptive neural regularization and creates an algorithmic method for its implementation with a neural network for dynamic determination of the regularization parameter.
Федір САЙБЕРТ, Юрій БІЛАК   +1 more
doaj   +1 more source

Sensorized Engineered Tissues with Built‐in Thermoregulation and Nutrient Supply

Advanced Functional Materials, EarlyView.
This work introduces a granular hydrogel‐based tissue engineering platform that includes a closed‐loop temperature control to maintain 37°C and sustainably releases nutrients, thereby enabling cells to retain a high viability even if stored at room temperature for up to 24 h.
Antonia Georgopoulou, Jakob Schreiner, Miriam Filippi, Aiste Balciunaite, Robert K. Katzschmann, Esther Amstad   +5 more
wiley   +1 more source

Quasireversibility for inhomogeneous ill-posed problems in Hilbert spaces

Electronic Journal of Differential Equations, 2010
In a Hilbert space $mathcal{H}$, the inhomogeneous ill-posed abstract Cauchy problem is given by $frac{du}{dt} = Au(t) + h(t)$, $u(0) = chi$, $0 leq t < T$; where $A$ is a positive self-adjoint linear operator acting on $mathcal{H}$, $chi in ...
Beth M. Campbell Hetrick
doaj  

On Tikhonov's Method for Ill-Posed Problems [PDF]

Mathematics of Computation, 1974
For Tikhonov’s regularization of ill-posed linear integral equations, numerical accuracy is estimated by a modulus of convergence, for which upper and lower bounds are obtained. Applications are made to the backward heat equation, to harmonic continuation, and to numerical differentiation.
openaire   +2 more sources

Single‐ and Dual‐Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Single‐atom and dual‐atom‐based atomically dispersed catalysts (ADCs) effectively address the shuttle effect and sluggish redox kinetics in Li–S batteries. With nearly 100% atomic utilization and tunable coordination environments, ADCs enhance LiPSs adsorption, lower conversion barriers, and accelerate sulfur redox reactions.
Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li   +4 more
wiley   +1 more source

Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films

Advanced Functional Materials, EarlyView.
Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley   +1 more source

Quasireversibility methods for non-well-posed problems

Electronic Journal of Differential Equations, 1994
$$displaylines{ u_t+Au = 0, quad ...
G. W. Clark, S. F. Oppenheimer
doaj