Results 71 to 80 of about 241,664 (267)

A Generalization of Fourier Series occurring in Atomic Theory [PDF]

arXiv, 2019
A number of the Fourier Series which occur in the theory of the semi-classical atom due to Englert and Schwinger are generalized and presented.
arxiv  

On the History of the Fourier Series [PDF]

, 1892
George Gibson
openalex   +1 more source

Real-time exercise stress cardiac MRI with Fourier-series reconstruction from golden-angle radial data. [PDF]

Magn Reson Imaging, 2021
Li YY, Zhang P, Rashid S, Cheng YJ, Li W, Schapiro W, Gliganic K, Yamashita AM, Grgas M, Haag E, Cao JJ.   +10 more
europepmc   +1 more source

Optical Control of Ferroelectric Imprint in BiFeO3

Advanced Functional Materials, EarlyView.
Above‐bandgap irradiation at room temperature enables on‐demand optical control of defect‐driven built‐in electric fields in BiFeO₃ thin films, fabricated via scalable, chemical spray pyrolysis. These fields, otherwise “frozen‐in,” can cause severe device degradation, including non‐switchable polarization, dead layers near interfaces, and polarization ...
Haoze Zhang, Malur C. Nagashree, Richard F. Webster, Zhipeng Wang, Xiaoran Zheng, Suresh D. Kulkarni, Rajendra B. Venkataramana, Jan Seidel, Pankaj Sharma   +8 more
wiley   +1 more source

Fourier-Stieltjes series of Walsh functions [PDF]

, 1957
N. J. Fine
openalex   +1 more source

Built‐In Electric Field in 2D/2D LDH/Antimonene Heterostructure to Induce Stable β‐NiOOH at Ultralow Potential for Cost‐Effective Water Electrolysis

Advanced Functional Materials, EarlyView.
In this paper, a built‐in electric field (BEF) strategy is proposed to fabricate NiFe‐LDH/antimonene heterostructure as bifunctional electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The formed BEF generates a local potential that reduces the potential for the formation of β‐NiOOH, thereby enabling ultra‐low ...
Jingkun Wang, Xiaoning Li, Haojie Liang, Chenxi Zhang, Huayun Du, Ying Sun, Hui Li, Hongge Pan, Yuying Hao, Min Zhao, Tianbao Li, Tianyi Ma   +11 more
wiley   +1 more source

On the divergence of Fourier series [PDF]

Proceedings of the American Mathematical Society, 1958
1. By a well known theorem of Kolmogoroff there is a function whose Fourier series diverges almost everywhere. Actually, Kolmogoroff's proof was later generalized so that the Fourier series diverged everywhere [2, p. 175]; but we shall be concerned only with the almost everywhere theorem here. The proof involves rather severe restrictions on the orders
openaire   +1 more source

Optically Reciprocal Gratings and Their Application to Synthesis of Fourier Series [PDF]

, 1941
Μ. J. Buerger
openalex   +1 more source

Electrolyte Engineering Strategy with Catecholate Type Additive Enabled Ultradurable Zn Anode

Advanced Functional Materials, EarlyView.
A catecholate‐type molecule is proposed as a multifunctional electrolyte additive, providing a strong buffering ability as well as homogeneous (101)‐textured electroplating morphology. The modified Zn anode exhibits a remarkable rate capability, extraordinary reversibility, and superior cyclic stability.
Wenyu Liang, Dongyang Li, Rui Zhong, Sirong Tao, Yueming Zhu, Wendong Tan, Rui Xu, Yifei Yuan, Igor Zhitomirsky, Jun Lu   +9 more
wiley   +1 more source

Asymmetric Nanofiber Membranes for Simultaneous Moisture Adsorption and Rapid Catalytic Hydrolysis of Nerve Agent Simulants in Atmospheric Environments

Advanced Functional Materials, EarlyView.
Asymmetric nanofiber membranes are constructed for simultaneous moisture adsorption and catalytic hydrolysis of dimethyl 4‐nitrophenyl phosphate (DMNP) in a wide range of relative humidity. The membrane exhibits high moisture adsorption capacity and fast hygroscopic rate.
Xuejiao Wang, Yu‐Xuan Zheng, Chen Ding, Ming Zhang, Zhong‐Zhen Yu, Shaobin Wang, Dongzhi Yang   +6 more
wiley   +1 more source