Results 121 to 130 of about 5,947,042 (303)

Fuglede-Kadison determinants of matrix-valued semicircular elements and capacity estimates

We calculate the Fuglede-Kadison determinant of arbitrary matrix-valued semicircular operators in terms of the capacity of the corresponding covariance mapping. We also improve a lower bound by Garg, Gurvits, Oliveira, and Widgerson on this capacity, by making it dimension-independent.
Mai, Tobias, Speicher, Roland
openaire   +2 more sources

Insights Into CO2 Loss, pH Effects, and Tafel Kinetics in Ni Single Atom‐Driven Bicarbonate Electroreduction

Advanced Science, EarlyView.
Selective CO formation in bicarbonate electrolysis is achieved by retaining reactive CO2 and tuning pH, while the competing hydrogen evolution reaction occurs at the interface. The rate‐determining step couples the chemical equilibrium of bicarbonate/CO2 with electrochemical charge transfer, offering insight into optimizing reaction conditions for ...
Lin Li, Yi‐Jie Kong, Ting Zhang, Xu Han, Kristine Aalestrup, Steen Uttrup Pedersen, Xin‐Ming Hu, Kim Daasbjerg   +7 more
wiley   +1 more source

Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications

Nanomaterials
In this study, Cu-doped ZnO aerogel nanoparticles with a 4% copper concentration (Cu4ZO) were synthesized using a sol–gel method, followed by supercritical drying and heat treatment.
Majdi Benamara, Kais Iben Nassar, Pedro Rivero-Antúnez, Manel Essid, Silvia Soreto Teixeira, Shanyu Zhao, Albert Serrà, Luis Esquivias   +7 more
doaj   +1 more source

Multidimensional and Multifunctional Laser‐Induced Graphene (LIG) for Point‐of‐Care and Wearable Biosensing, Theranostics, and Bioactive Interfaces Toward Personalized Healthcare and Regenerative Medicine

Advanced Science, EarlyView.
Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang, Yurou Yuan, Xiaohong Ding, Wing Cheung Mak   +3 more
wiley   +1 more source

Finite element–based parametric analysis and geometric optimization of stress concentration in semicircular notched plates

Journal of Thermal Engineering
The main objective of this study is to optimize the geometry of a tension strip with opposite semicircular edge notches in order to reduce the stress concentration factor (h) by using computational techniques. An ABAQUS finite-element model was developed, and a full-factorial design of experiments was used to test the effects of four independent ...
Sangram S. Bhosale, Sachin M. Bhosle
openaire   +1 more source

Electrolyte–Framework Matching in High‐Voltage TEMPO‐COF Cathodes for Lithium Batteries

Advanced Science, EarlyView.
TEMPO‐functionalized covalent organic frameworks are investigated as high‐voltage cathodes for lithium batteries. Screening five electrolyte anions identifies lithium difluoro(oxalato)borate (LiDFOB) as the optimal electrolyte, balancing capacity, rate capability, and cycling stability, while buckypaper electrodes achieve high mass loading (40 mg cm−2)
Marilyn Esclance DMello, Nagaraj Patil, Fanni Fekecs, Sergio Pinilla, Rebeca Marcilla, Manuel Souto   +5 more
wiley   +1 more source

Element grouping with semicircular contours

Journal of Vision, 2010
M. L. Hamel, J. L. Dannemiller
openaire   +1 more source

3D‐Mixer‐Assisted High‐Entropy Doping of LiNiO2 for Co‐Free Ni‐Rich Cathodes in Lithium‐Ion Batteries

Advanced Science, EarlyView.
High‐entropy doping of Co‐free Ni‐rich LiNiO2 cathodes is achieved through a scalable 3D mixing process. Multi‐element incorporation stabilizes the layered structure, alleviates Li/Ni disorder and electrode swelling, and enhances cycling stability. This approach underscores the potential of high‐entropy strategies to deliver structurally robust and ...
Seung Ri Kim, Thillai Govindaraja Senthamaraikannan, Jun Jae Myeong, Hyung Do Kim, Dong‐Hee Lim, Eun Mi Kim, Sang Mun Jeong   +6 more
wiley   +1 more source

Comparative Evaluation of Three Different Obturation Methods in Filling Experimental Internal Resorptive Defects Using Cone Beam Computed Tomography – An In vitro Study

Journal of the Scientific Society
Aim: This in vitro study was conducted with an aim to compare the quality of obturation by measuring the percentage voids in artificial internal resorptive defects of root canals filled using Thermoplasticized gutta-percha (GP) with AH Plus sealer, GP ...
Anubhuti Gupta, Neha S Dhaded, Sneha Annaso Patil, Preeti P Kore, Amita Aditya   +4 more
doaj   +1 more source

Integrated Photoelectrode and Electrolyte Engineering via Carbon Quantum Dots for Self‐Powered H2O/O2‐Mediated Portable Photoelectrochemical Cells

Advanced Science, EarlyView.
Surface‐charged N‐CQDs serve as both electrolyte additives and photocathode modifiers. Electrodeposited N‐CQDs on Cu2O form a stable composite, steering 4e− ORR toward water. A quasi‐solid electrolyte with N‐CQDs aids charge migration, electrode‐electrolyte interfacial compatibility and replenishes active sites.
Yang Wu, Hui‐Min Duan, Chen‐Guang Li, Tian‐Xu Zeng, Jian‐Long Li, Xue‐Tong Cheng, Yun Jing, Wei‐Zhe Li, Qing Li, Xu Tian, Jiwu Zhao, Anders Thapper, Hong‐Yan Wang   +12 more
wiley   +1 more source