Results 11 to 20 of about 1,732 (132)

Ionospheric Characterization Over Iran Using Multi‐Frequency IMB HF Transmitters and Global WSPRNET Reception During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The Ionospheric Monitoring Beacon network in Iran provides continuous, multi‐frequency high‐frequency (HF) transmissions using WSPRNET modulation, enabling global reception and near–real‐time monitoring of ionospheric propagation conditions.
A. Mahmoudian, Saba Hafizi Lotfabadi, Mohammad Azimi   +2 more
wiley   +1 more source

An ultraviolet–visible spectroscopy system for studying real‐time pressure effects on enzyme activity

Limnology and Oceanography: Methods, Volume 24, Issue 5, May 2026.
Abstract Investigations of hydrostatic pressure effects on microbial enzymatic processing are challenging but critical for understanding element cycling in the world's oceans. In this study, we developed and tested a stainless‐steel pressure cell capable of withstanding up to 110 MPa of hydrostatic pressure (equivalent to ~ 11,000 m depth), featuring ...
Maria Papadimitraki, Urban Wünsch, John Paul Balmonte, Mathias Middelboe, Colin A. Stedmon, Karl M. Attard, Ronnie N. Glud   +6 more
wiley   +1 more source

Ionospheric Effects on Maximum Usable Frequency for a Cross‐Auroral and a Polar Cap HF Radio Link

Radio Science, Volume 61, Issue 5, May 2026.
Abstract Maximum usable frequency (MUF) is an important indicator of the ability of the ionosphere to support over‐the‐horizon propagation of high frequency (HF) radio waves. MUF depends on the location of the transmitter and receiver, and the structure of ionospheric electron density.
T. G. Cameron, K. W. Reiter, R. A. D. Fiori   +2 more
wiley   +1 more source

Automatic Real‐Time Ionogram Scaling Method for Global Ionosondes Using Artificial Intelligence

Space Weather, Volume 24, Issue 5, May 2026.
Abstract An ionosonde is an instrument used for local ionosphere remote sensing observations and has the longest history and widest global distribution. Ionograms observed by ionosondes, which depict the electron density profile as a function of virtual height, are critical for ionospheric modeling accuracy and space weather nowcasting.
Peng Liu, Tatsuhiro Yokoyama, Dieter Bilitza, Mamoru Yamamoto, Chun‐Yen Huang, Erlu Chuai, Michi Nishioka   +6 more
wiley   +1 more source

Long‐Term Trends of Ionospheric Peak Electron Density and Height

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Long‐term trends in ionospheric electron density have been investigated using vertical sounding data from 14 ionosonde stations spanning European, Asian, and American longitude sectors. The study examines the relationship between the ionospheric F2 layer peak electron density (NmF2) and height (hmF2) at noontime and midnight with the solar 30 ...
N. Jakowski, M. M. Hoque, M. G. Tan Jun Rios   +2 more
wiley   +1 more source

Polydopamine‐Mediated Silver and Nickel Metallization of Phase Change Microcapsules for Multifunctional Flexible Epoxy Composites

Journal of Applied Polymer Science, Volume 143, Issue 14, April 10, 2026.
An eco‐friendly, polydopamine‐assisted electroless metallization of phase change microcapsules enables thin silver or nickel coatings that preserve phase‐change functionality and while enhancing thermal diffusivity and thermomechanical performance in flexible epoxy composites.
Giulia Fredi, Sascha Putzke, Christina Scheffler, Cordelia Zimmerer   +3 more
wiley   +1 more source

A Computationally Efficient Method for Deriving Instantaneous F2 Layer Peak Parameters From Climatological Maps and TEC Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract International Reference Ionosphere (IRI) and the Ionosphere‐Plasmasphere (IRI‐Plas) models describe monthly median ionospheric conditions. IRI‐Plas, unlike IRI, allows one to include instantaneous Total Electron Content observations (TEC) to adjust the median predictions. The standard IRI‐Plas generates monthly medians of foF2m, hmF2m and TECm
T. L. Gulyaeva, F. Arikan, M. Hernández‐Pajares, I. Stanislawska, A. M. Padokhin   +4 more
wiley   +1 more source

A Transferable Real‐Time MUF Forecasting Model for HF Communication in China

Space Weather, Volume 24, Issue 4, April 2026.
Abstract High‐frequency (HF) communication is an important means of strategic and emergency communication, playing an irreplaceable role in both military and civil applications. The maximum usable frequency (MUF) is a key parameter controlling HF signal propagation, and its real‐time and accurate forecast has long been a major challenge in engineering.
Qiao Yu, Jian Wang, Yafei Shi, Zhanfeng Zhu, Jieqing Fan, Tong Xu, Cheng Yang   +6 more
wiley   +1 more source

Family History and Solar Insolation in Bipolar I Disorder

Acta Psychiatrica Scandinavica, Volume 153, Issue 4, Page 270-278, April 2026.
ABSTRACT Background Sunlight has profound impacts on physical and mental health, beyond vision, including effects on circadian rhythms, alertness, mood, and sleep. A family history of any mood disorders is strongly associated with psychiatric disorders including bipolar disorder.
M. Bauer, T. Glenn, E. D. Achtyes, M. Alda, E. Agaoglu, K. Altınbaş, O. A. Andreassen, E. Angelopoulos, R. Ardau, M. Aydin, Y. Ayhan, C. Baethge, R. Bauer, B. T. Baune, C. Balaban, C. Becerra‐Palars, A. P. Behere, H. Belete, T. Belete, G. Okawa Belizario, F. Bellivier, R. H. Belmaker, F. Benedetti, M. Berk, Y. Bersudsky, Ş. Bicakci, H. Birabwa‐Oketcho, T. D. Bjella, C. Brady, J. Cabrera, M. Cappucciati, A. M. Paredes Castro, W. Chen, E. Y. W. Cheung, S. Chiesa, M. Chanopoulou, M. Crowe, A. Cuomo, S. Dallaspezia, P. Desai, S. Dodd, B. Etain, A. Fagiolini, F. T. Fellendorf, E. Ferensztajn‐Rochowiak, J. G. Fiedorowicz, K. N. Fountoulakis, M. A. Frye, P. A. Geoffroy, M. J. Gitlin, A. Gonzalez‐Pinto, J. F. Gottlieb, P. Grof, B. C. M. Haarman, H. Harima, M. Hasse‐Sousa, C. Henry, L. Hoffding, J. Houenou, M. Imbesi, E. T. Isometsä, M. Ivkovic, S. Janno, S. Johnsen, F. Kapczinski, G. N. Karakatsoulis, M. Kardell, L. V. Kessing, S. J. Kim, B. König, T. L. Kot, M. Koval, M. Kunz, B. Lafer, M. Landén, E. R. Larsen, R. W. Licht, V. M. Ludwig, C. Lopez‐Jaramillo, A. MacKenzie, H. Østergaard Madsen, S. Alberte Kongstad A. Madsen, J. Mahadevan, A. Mahardika, K. Mahfoudh, M. Manchia, W. Marsh, M. Martinez‐Cengotitabengoa, J. Martini, K. Martiny, Y. Mashima, D. M. McLoughlin, A. N. R. Meesters, Y. Meesters, I. Melle, F. Meza‐Urzúa, E. Michaelis, P. Mikolas, Y. Ming Mok, S. Monteith, M. Moorthy, G. Morken, E. Mosca, A. A. Mozzhegorov, R. Munoz, S. V. Mythri, R. K. Nadella, T. Nakanotani, R. Ernst Nielsen, C. O'Donovan, A. Omrani, Y. Osher, U. Ouali, M. Pantovic‐Stefanovic, P. Pariwatcharakul, J. Petite, A. Pfennig, M. Pilhatsch, Y. Pica Ruiz, M. Pinna, M. Pompili, R. Porter, D. Quiroz, F. Diego Rabelo‐da‐Ponte, R. Ramesar, N. Rasgon, W. Ratta‐apha, M. Redahan, M. S. Reddy, A. Reif, E. Z. Reininghaus, J. Gringer Richards, P. Ritter, J. K. Rybakowski, L. Sathyaputri, A. M. Scippa, C. Simhandl, D. Smith, J. Smith, P. W. Stackhouse Jr, D. J. Stein, K. Stilwell, S. Strejilevich, K.‐P. Su, M. Subramaniam, A. Hatim Sulaiman, K. Suominen, A. J. Tanra, Y. Tatebayashi, W. Lin Teh, L. Tondo, C. Torrent, D. Tuinstra, T. Uchida, A. E. Vaaler, E. Vieta, B. Viswanath, C. Volf, K.‐J. Yang, M. Yoldi‐Negrete, O. Kaan Yalcinkaya, A. H. Young, Y. Zgueb, P. C. Whybrow   +163 more
wiley   +1 more source

Preparation of High‐Pressure Laminate With Bio‐Based Fructose‐HMF‐Amine Impregnation Resin

Journal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.
This study demonstrates the use of a resin made from renewable carbohydrates, free from phenol and formaldehyde, for impregnating recycled kraft paper to produce high‐pressure laminates. The resulting bio‐based laminate samples match the mechanical performance of conventional phenol‐formaldehyde‐based samples, highlighting their potential to replace ...
Elisabeth Billich, Wilfried Sailer‐Kronlachner, Catherine Rosenfeld, Elfriede Hogger, Andreas Amsüss, Antje Potthast, Hendrikus W. G. van Herwijnen   +6 more
wiley   +1 more source