Results 71 to 80 of about 461,686 (346)

EclipseNB: A Network of Low‐Cost GNSS Receivers to Study the Ionosphere

Space Weather
This work aims to demonstrate that dense networks of low‐cost dual‐frequency global navigation satellite systems (GNSS) receivers can be used to retrieve ionospheric electron content with almost the same level of accuracy as scientific‐grade GNSS ...
A. Kashcheyev, B. Nava, C. Watson, P. T. Jayachandran, R. B. Langley   +4 more
doaj   +1 more source

The Solar Eclipse Predictions of Chiljeongsam-Oepyeon in Early Choseon [PDF]

Journal of Astronomy and Space Sciences, 2004
The history books of East Asia about astronomical phenomena have the more records of the solar eclipse frequently than any other ones. It is because traditionally, the solar eclipse meaned the fate of dynasty and the king's rule.
Young Sook Ahn, Yong Sam Lee
doaj   +1 more source

Suzaku and Optical Spectroscopic Observations of SS 433 in the 2006 April Multiwavelength Campaign

, 2010
We report results of the 2006 April multi-wavelengths campaign of SS 433, focusing on X-ray data observed with Suzaku at two orbital phases (in- and out-of- eclipse) and simultaneous optical spectroscopic observations. By analyzing the Fe25 K_alpha lines
Fabrika, Sergei, Iijima, Takashi, Kawai, Nobuyuki, Kinugasa, Kenzo, Kotani, Taro, Kubota, Kaori, Makishima, Kazuo, Namiki, Masaaki, Ozaki, Shinobu, Ueda, Yoshihiro, Yamada, Shin'ya, Yuasa, Takayuki   +11 more
core   +1 more source

CRISPR/Cas9‐Assisted Microrobots for Fast and Ultrasensitive “On‐The‐Fly” Next‐Generation DNA Detection

Advanced Functional Materials, EarlyView.
This work presents self‐propelled CRISPR/Cas9‐functionalized Au–MRs for rapid, amplification‐free, “on‐the‐fly” DNA detection. By harnessing motion‐assisted signal recovery, the platform achieved the limit of detection in low fM DNA concentrations, enabling detection across a wide dynamic range within only 5 min, which is significantly faster than any ...
Jyoti, Petr Michálek, Zbyněk Heger, Martin Pumera   +3 more
wiley   +1 more source

An Optical Study of BG Geminorum: An Ellipsoidal Binary with an Unseen Primar Star

, 1999
We describe optical photometric and spectroscopic observations of the bright variable BG Geminorum. Optical photometry shows a pronounced ellipsoidal variation of the K0 I secondary, with amplitudes of ~0.5 mag at VRI and a period of 91.645 days.
Alceste Bonanos, Allyn Dullighan, Baldwin B. W., Batten A. H., Beekman G., Casares J., Eaton J. A., K. K. McLeod, Kippenhahn R., Knee L. B. G., Neckel T., Olson E. C., Olson E. C., Priscilla Benson, Scott J. Kenyon, Shahbaz T., Shahbaz T., Zola A.   +17 more
core   +1 more source

The donor star radial velocity curve in the cataclysmic variable GY Cnc confirms white dwarf eclipse modelling mass [PDF]

, 2023
S. P. Littlefair, P. Rodríguez-Gil, T. R. Marsh, S. G. Parsons, V. S. Dhillon   +4 more
openalex   +1 more source

Transparent Inorganic–Organic Bilayer Neural Electrode Array and Integration to Miniscope System for In Vivo Calcium Imaging and Electrophysiology

Advanced Functional Materials, EarlyView.
This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han, Kevin Cheng, Swathy Sampath Kumar, Anil Bollimunta, Elizabeth E. Torr, Juhwan Kim, Kyoungmin Kim, Hyungjun Choi, Seongkwon Hwang, Sarah Brodnick, David Cheng, Lindsay Gray, Yei Hwan Jung, William L. Murphy, Aaron J. Suminski, Jonathan J. Nassi, Justin C. Williams, Dong‐Wook Park   +17 more
wiley   +1 more source

The Eclipse of Reason - A Present Time Risk

Academicus International Scientific Journal
This paper contends that technical progress, from automation in industry to artificial intelligence, might involve the risk of a humanly impoverished society. Instrumental values could overcome final values and determine the end of meaning.
Franco Ferrarotti
doaj   +1 more source

Singular value decomposition based satellite attitude determination using different sensor configurations

International Journal of Metrology and Quality Engineering, 2017
Satellite's attitude can be determined by using several different ways. In order to use a recursive filter to determine the attitude especially after crucial intervals for the satellite including detumbling, eclipse, etc., single-frame methods can be ...
Cilden Guler Demet, Hajiyev Chingiz
doaj   +1 more source

Differentiating the Synergistic Interactions Between Li+ Salts and Cyclic to Linear Carbonate Ratios to Enable Wide‐Temperature Performance of Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
The coordination in carbonate solvents and degradation products of lithium difluoro(oxolato) borate (LiDFOB) salt enables sufficient passivation of both LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode and graphite anode in the absence of ethylene carbonate (EC).
Thomas J. Watts, Marshall C. Smart, Arumugam Manthiram   +2 more
wiley   +1 more source