Results 61 to 70 of about 8,678 (295)

Multi-instrument observations of ionospheric super plasma bubbles in the European longitude sector during the 23–24 April 2023 severe geomagnetic storm

Journal of Space Weather and Space Climate
This study’s objective is to better specify the rare occurrence of super equatorial plasma bubbles in particular to the European longitude sector, detailing their spatio-temporal evolution, and better understanding pre-conditions for their development ...
Zakharenkova Irina, Cherniak Iurii, Braun John J., Wu Qian, Sokolovskiy Sergey, Hunt Douglas, Weiss Jan-Peter   +6 more
doaj   +1 more source

Influence of Phase Diffuser Dynamics on Scintillations of Laser Radiation in Earth Atmosphere: Long-Distance Propagation

, 2009
The effect of a random phase diffuser on fluctuations of laser light (scintillations) is studied. Not only spatial but also temporal phase variations introduced by the phase diffuser are analyzed.
A. A. Chumak, G. P. Berman, L. C. Andrews, L. Mandel, M. E. Gracheva, V. A. Banakh, V. A. Banakh   +6 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Role of the magnetospheric and ionospheric currents in the generation of the equatorial scintillations during geomagnetic storms [PDF]

Annales Geophysicae, 2004
The equatorial ionosphere parameters, Kp, Dst, AU and AL indices characterized contribution of different magnetospheric and ionospheric currents to the H-component of geomagnetic field are examined to test the geomagnetic activity effect on the ...
L. Z. Biktash
doaj   +1 more source

Non-Gaussian Radio-Wave Scattering in the Interstellar Medium

, 2005
It was recently suggested by Boldyrev & Gwinn that the characteristics of radio scintillations from distant pulsars are best understood if the interstellar electron-density fluctuations that cause the time broadening of the radio pulses obey non-Gaussian
Arieh Konigl, Boldyrev S., Dimotakis P. E., Habing H. J., Kahn F. D., Larson R. B., Lazio T., Stanislav Boldyrev, Sutton J. M., Uscinski B. J., Williamson I. P., Williamson I. P.   +11 more
core   +3 more sources

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Machine learning approach for prediction of total electron content and classification of ionospheric scintillations over Visakhapatnam region

AIP Advances, 2023
Ionospheric scintillations, which are due to ionospheric plasma density anomalies, negatively impact trans-ionospheric signals and the positioning accuracy of the global navigation satellite system (GNSS).
Shiva Kumar Nimmakayala, Srilatha Indira Dutt V.B.S   +1 more
doaj   +1 more source

Graphene‐Interfaced Stretchable Sweat Patch for Multiplexed Electrochemical Monitoring of IL‐6, Glucose, and Calcium Ions

Advanced Materials Technologies, EarlyView.
Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon, Ali Tufani, Süleyman Çelik, Javed H. Niazi, Anjum Qureshi   +4 more
wiley   +1 more source

Faraday polarization fluctuations and their dependence on post sunset secondary maximum and amplitude scintillations at Delhi [PDF]

Annales Geophysicae, 2002
VHF Faraday rotation (FR) and amplitude scintillation data recorded simultaneously during May 1978–December 1980 at Delhi (28.63° N, 77.22° E; Dip 42.44° N) is analyzed in order to study the Faraday polarization fluctuations (FPFs) and their ...
J. K. Gupta, J. K. Gupta, L. Singh, R. S. Dabas   +3 more
doaj   +1 more source

Pembangunan pembelajaran mobile dalam kejuruteraan [PDF]

, 2016
Perkembangan pembelajaran mobile hari ini memberi peluang untuk teknologi mobile dan teknologi Computer Aided Design (CAD) diintegrasikan dalam proses reka bentuk.
Ismail, Irwan Mahazir
core   +1 more source