Results 31 to 40 of about 78,267 (285)

Pointing errors in solar absorption spectrometry – correction scheme and its validation [PDF]

Atmospheric Measurement Techniques, 2015
A method for quantification of sun-pointing inaccuracies in solar absorption spectrometry is presented along with a correction scheme for the resulting errors in trace gas vertical column or profile retrievals.
A. Reichert, P. Hausmann, R. Sussmann
doaj   +1 more source

Performance of FSO Communication Systems Employing Alamouti-Type Space-Time Encoding Over Málaga Channels With Pointing Errors

IEEE Photonics Journal, 2022
In this work, spatial diversity techniques have been proposed for free-space optical (FSO) communication systems to combat the deteriorating effects, such as atmospheric turbulence effects and pointing errors, and the performance of FSO communication ...
Abdulgani A. Ibrahim, Serdar Ozgur Ata, Lutfiye Durak-Ata   +2 more
doaj   +1 more source

Prognosis of Long‐Term Continuous Renal Replacement Therapy and the Impact of Combined Continuous Intravenous Sodium Infusion Therapy

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients requiring long‐term continuous renal replacement therapy (CRRT) generally have poor prognoses. This study evaluated whether adding continuous intravenous sodium infusion (cIVNa) is associated with improved hemodynamics and outcomes in patients undergoing long‐term CRRT for ≥ 7 days.
Akinori Yamaguchi, Atsuyoshi Mita, Kosuke Sonoda, Makoto Harada, Koji Hashimoto, Hiroshi Imamura, Yuji Kamijo   +6 more
wiley   +1 more source

A General Model for Pointing Error of High Frequency Directional Antennas

IEEE Open Journal of the Communications Society, 2022
This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error for a general case at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links.
Mohammad Taghi Dabiri, Mazen Hasna, Nizar Zorba, Tamer Khattab, Khalid A. Qaraqe   +4 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Dual-Egocentre Hypothesis on Angular Errors in Visually Directed Pointing

, 2011
We examined the hypothesis that angular errors in visually directed pointing, in which an unseen target is pointed to after its direction has been seen, are attributed to the difference between the locations of the visual and kinesthetic egocentres ...
Koichi Shimono, Atsuki Higashiyama
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Correction for pointing errors of Siberian Radioheliograph antennas

Solar-Terrestrial Physics
For radio interferometers, antenna pointing accuracy is critical, as deviations in the direction of the beam from the source not only reduce the signal level, but also lead to incorrect measurements of visibility phases.
Globa Mariia, Gubin Aleksey, Lesovoi Sergey   +2 more
doaj   +1 more source

Modeling of Pointing Errors in Terrestrial FSO Links Caused by Building Sway Under Wind Loads

IEEE Open Journal of the Communications Society
With their high data rate capacity, free space optical (FSO) communication systems can be used for last mile access, backhauling and fiber optic replacement.
Hasan Tahsin Toplar, Murat Uysal
doaj   +1 more source

Feasibility study of immersive virtual prism adaptation therapy with depth-sensing camera using functional near-infrared spectroscopy in healthy adults

Scientific Reports, 2022
Prism Adaptation (PA) is used to alleviate spatial neglect. We combined immersive virtual reality with a depth-sensing camera to develop virtual prism adaptation therapy (VPAT), which block external visual cues and easily quantify and monitor errors than
Sungmin Cho, Won Kee Chang, Jihong Park, Seung Hyun Lee, Jongseung Lee, Cheol E. Han, Nam-Jong Paik, Won-Seok Kim   +7 more
doaj   +1 more source