Results 71 to 80 of about 34,963 (304)

Higher order harmonics generated by the switching power supply.

open access: yes, 2018
Higher order harmonics generated by the switching power supply.
Petre Ogrutan (6053981)   +4 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

A Schwarz Lemma for harmonic and hyperbolic-harmonic functions in higher dimensions

open access: yesManuscripta Mathematica, 1992
The Laplace-Beltrami operators on the unit ball and the half-space \(\{x_ p>0\}\) of \(R^ p\) are defined respectively by \[ \Delta_ 0={1- \| x\|^ 2\over 4}\cdot\left(\Delta+{2(p-2)\over 1-\| x\|^ 2}\cdot\langle x,\text{grad}\rangle\right)\text{ and } \Delta_ +=x^ 2_ p\cdot\left(\Delta+{2-p\over x_ p}\cdot{\partial\over\partial x_ p}\right), \] and ...
openaire   +2 more sources

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi   +4 more
wiley   +1 more source

HARMONICS ANALYSIS OF A WIND ENERGY CONVERSION SYSTEM WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR

open access: yes, 2015
Global energy demands are growing daily, with renewable energy options such as wind power emerging as attractive alternatives to fossil fuels. This thesis is mainly doing simulation using Matlab to filter harmonics which are found in a Permanent Magnet ...
Nasr, Abdulhakim
core  

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

Nonlinear dynamical response of interacting bosons to synthetic electric field

open access: yesPhysical Review Research, 2020
We theoretically study the nonlinear response of interacting neutral bosonic gas in a synthetically driven one-dimensional optical lattice. In particular, we examine the bosonic analog of electronic higher harmonic generation in a strong time-dependent ...
Arko Roy, Soumya Bera, Kush Saha
doaj   +1 more source

Higher harmonic resonance of duffing-type nonlinear systems excited by a force including higher harmonics.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1985
高調波ひずみをもつ外力が非線形の高調波共振応答におよぼす影響を調べるため,Duffing形の一自由度系に三次の高調波を含む外力が作用する場合の三次の高調波共振応答を求めた.調和バランス法による数値解析の結果,外力高調波成分の値により応答曲線は3種類に分類されることがわかり,それらの形の発生に対する系パラメータ依存性を明らかにした.また,RKG法による直接数値解とも比較し,結果の妥当性を確認した.
openaire   +3 more sources

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

open access: yesAdvanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena   +6 more
wiley   +1 more source

Preisach Model Identification From Higher Harmonics

open access: yes, 1998
The classic Preisach model is used to describe a general hysteretic behaviour, and as most nonlinear systems, its output contains higher harmonics. A Fourier analysis of a specific class of weighting functions for the Preisach model relates some free ...
Bertrand Dutoit, Mårten Sjöström
core  

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