Results 81 to 90 of about 8,069 (285)

Boron Monofluoride Complexes Bearing π‐Expanded Coumarin Subunits: Facile Synthesis, Crystal Structure, and Solid‐State Enhanced Emission

Chemistry – A European Journal, EarlyView.
We here report the design, facile synthesis, experimental, and theoretical characterization of a novel class of monofluoroborate compounds featuring π‐expanded coumarin subunits displaying solid‐state enhanced Emission. The origin of this phenomenon is disclosed by combined theoretical and spectroscopic investigations.
Amine Assel, Fausto Puntoriero, Mohamed Chellegui, Antonio Santoro, Francesco Nicolò, Mayssa Zayene, Hichem Ben Jannet, Alessandro Auditore, Tianhong Yan, Alessandro Amadeo, Frédéric Labat, Ilaria Ciofini, Sebastiano Campagna   +12 more
wiley   +1 more source

A Co‐Designed Implicit‐Reset Path PFD and Current Mismatch Compensated CP Enabling Sub‐0.5% Mismatch and Dead Zone‐Free for Low‐Spur PLLs

International Journal of Circuit Theory and Applications, EarlyView.
A co‐designed implicit‐reset phase‐frequency detector (PFD) and nonlinear amplifier‐assisted charge pump (CP) achieve dead zone‐free operation from 10 MHz to 4.7 GHz with < 0.5% current mismatch without calibration, enabling −80 dBc of reference spur and 0.50 ps of RMS jitter in a 180 nm of CMOS PLL.
A. Ghaemnia, Jincheng Yang, Xiaojiong Fei, G. Zhang   +3 more
wiley   +1 more source

High‐Voltage Stability of LiCoO2 Cathode Materials Composited With Vanadium‐Based Glass Coatings

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Vanadium‐based glasses show fluidity and good wettability toward other materials at low temperatures. The controlled precipitation of nanocrystals in vanadium‐based glasses enhances the material's mechanical properties and electrical conductivity. The VPFL coatings bond to the LiCoO2 interface via chemical bonds.
Xu Wang, Zhiquan Su, Weiwen Chen, Qiang Chen, Yihong Chen, Fanhou Kong, Zhe Wang, Yao Zhou, Xiaolong Yu, Changjiu Li   +9 more
wiley   +1 more source

Using Narrow Band CE-Chirps to Elicit Cervical Vestibular Evoked Myogenic Potentials

, 2021
OBJECTIVES: To compare the effects of Narrow band CE-Chirps (NB CE-Chirps) and tone bursts (TBs) at 500 Hz and 1000 Hz on the amplitudes and latencies in cervical vestibular evoked myogenic potentials (cVEMPs). DESIGN: Thirty-one healthy adult volunteers
Mat, Quentin, Sophie Tainmont, Mario Manto, Quentin Mat, Naïma Deggouj, Jean-Pierre Duterme, Deggouj, Naima, Lelubre, Christophe, Manto, Mario, Duterme, Jean-Pierre, Christophe Lelubre, Tainmont, Sophie   +11 more
core   +1 more source

Auditory gamma‐band synchronization and attentional performance in juvenile myoclonic epilepsy

Epilepsia Open, EarlyView.
Abstract Objective Cognitive difficulties in juvenile myoclonic epilepsy (JME) are part of the clinical phenotype alongside epileptic seizures; however, the underlying neurophysiological mechanisms remain unclear. Auditory steady‐state responses (ASSRs) to repetitive 40‐ and 80‐Hz stimuli are widely used measures of gamma‐band oscillations (GBOs ...
Ryo Mitoma, Shunsuke Tamura, Yoji Hirano, Takako Mitsudo, Yubin Sung, Takahiko Mukaino, Takahiro Yamaguchi, Kou Matsumoto, Toshiaki Onitsuka, Shogo Hirano, Tomohiro Nakao, Noriko Isobe, Hiroshi Shigeto   +12 more
wiley   +1 more source

Chirps on finite cyclic groups

, 2008
Chirps arise in many signal processing applications, and have been extensively studied, especially in the case where chirps are regarded as functions of the real-line or of the integers.
Peter G. Casazza A, Matthew Fickus B
core  

Beyond Prediction: Data, Baselines, Explanation, and Causation in Machine Learning for Food Insecurity

Food Safety and Health, EarlyView.
The gains from machine learning in nowcasting and forecasting food insecurity are still small and limited and cannot be observed in all countries. This review summarizes the public resources for data, corrects common misconceptions about model requirements, and establishes baseline requirements, explanations, causal inference, and equity in operational
Shabnam Mehboob, Azman Abdullah, Gunesh Kumar, Samreen Memon, Naila Afghan   +4 more
wiley   +1 more source

Climatology of Tropical Cyclones Approaching Tanzania and Their Impacts on Rainfall in East Africa

International Journal of Climatology, EarlyView.
Tropical cyclones (TCs) that approach Tanzania bring heavy rainfall over northern Mozambique, Tanzania, and south‐central Kenya, but the occurrence of these TCs reduces precipitation over southern African countries. Easterly steering winds and the Mascarene High are key features directing TCs westward.
Michinori Ideyoshi, Youichi Kamae
wiley   +1 more source

Enhancing rainfall–runoff model accuracy with machine learning models by using soil water index to reflect runoff characteristics

Water Science and Technology
The advancement of data-driven models contributes to the improvement of estimating rainfall–runoff models due to their advantages in terms of data requirements and high performance.
Sarunphas Iamampai, Yutthana Talaluxmana, Jirawat Kanasut, Prem Rangsiwanichpong   +3 more
doaj   +1 more source

Fourier Transforms of Finite Chirps

, 2008
— Chirps arise in many signal processing applications. While chirps have been extensively studied both as functions over the real line and the integers, less attention has been paid to the study of chirps over finite groups.

core