Results 31 to 40 of about 543,396 (133)

A Deep Learning-Based Method for Enhancing the Signal-to-Noise Ratio of Star Sensor Images

Remote Sensing
In window tracking mode, stray light and detector readout noise can submerge star spot signals in star sensor images. The resulting degradation reduces centroid extraction accuracy and may even cause extraction failure, thereby preventing precise ...
Jian Guan, Hanye Yu, Yanpeng Wu, Xiaofeng Li, Rongzheng Cao   +4 more
doaj   +1 more source

Reliable Identification and Out‐of‐Library Detection in Mass Spectra

Journal of Chemometrics, Volume 40, Issue 8, August 2026.
ABSTRACT Accurate molecular identification from mass spectra is essential in analytical workflows, yet conventional library search typically returns the closest match even when the true compound is absent, leading to overconfident false positives. We propose a probabilistic framework that supports both reliable identification of compounds represented ...
Minsu Son, Hyoju Kim, Hyungjun Kim, Youngho Jin, Jaeoh Kim   +4 more
wiley   +1 more source

Understanding Mass Spectrometry: From Ion Generation to Spectral Interpretation

Journal of Mass Spectrometry, Volume 61, Issue 8, August 2026.
ABSTRACT This tutorial provides a structured introduction to mass spectrometry (MS), with particular emphasis on electrospray ionization (ESI)–based measurements. It is intended to support researchers from chemistry and related disciplines in developing a coherent understanding of MS principles, instrumentation, and data interpretation.
Arnold Steckel, Dávid Papp, Gitta Schlosser   +2 more
wiley   +1 more source

A Robust Low-Complexity Star Centroiding Algorithm for Autonomous Navigation under Lunar Noise Conditions

International Islamic University Malaysia Engineering Journal
Star-based navigation on the lunar surface is severely degraded by strong regolith reflections, abrupt illumination transitions, and sensor-induced noise, all of which lower the signal-to-noise ratio (SNR) and impair centroiding accuracy.
Anisa Hannani Razaman, Yasser Asrul Ahmad, Teddy Surya Gunawan, Othman Omran Khalifa, Mila Popović   +4 more
doaj   +1 more source

Review paper on centroiding algorithm for lunar navigation [PDF]

This paper reviews on potential algorithms for navigation on the moon's surface, focusing on centroiding algorithms in star sensors or trackers. Accurate positioning is crucial for lunar missions since there's no Global Positioning System (GPS), and ...
Khalifa, Othman Omran, Saidin, Norazlina, Ahmad, Yasser Asrul, Razaman, Anis Hannani, Azman, Amelia Wong   +4 more
core   +1 more source

A Step‐by‐Step Protocol From METASPACE to Biological Interpretation

Journal of Mass Spectrometry, Volume 61, Issue 7, July 2026.
ABSTRACT Mass spectrometry imaging (MSI) represents an exceptional tool for exploring complex biological systems spatially at the molecular level. However, its multidimensional nature and large data outputs make it challenging to extract meaningful biological insights. Advancements such as the METASPACE platform allow researchers to efficiently process,
Abigail Moreno‐Pedraza, Brittney Gorman, Marija Velickovic, Max Bentelspacher, Jaime Barros, Dusan Velickovic, Christopher R. Anderton   +6 more
wiley   +1 more source

Exponential Tails in the Centroid Velocity Distributions of Star-forming Regions

The Astrophysical Journal, 1995
13 pages, one figure, LaTeX format. There was an error in the initial submission that was simply an invalid name for the postscript file (it should have been called pdf_paper.ps rather than fig1_pp.ps).
Miesch, Mark S., Scalo, John M.
openaire   +2 more sources

Endophyte‐induced systemic spatial reprogramming of metabolism in Populus trichocarpa roots under drought

New Phytologist, Volume 251, Issue 1, Page 438-454, July 2026.
Summary Beneficial, facultative endophytes help plants thrive in challenging environments by altering their host's metabolism, but how these cellular scale metabolic changes propagate to the systems biology scale is unknown. In this work, we employed a high‐resolution chemical imaging approach to map metabolic changes at the Populus trichocarpa root ...
Jayde Aufrecht, Dušan Veličković, Robert Tournay, Sneha Couvillion, Vimal Balasubramanian, Tanya Winkler, Daisy Herrera, Robert Stanley, Sharon L. Doty, Amir H. Ahkami   +9 more
wiley   +1 more source

Oil‐Coated Nanoplastics Induce Rapid Membrane Disruption and Severe Intestinal Injury

Advanced Science, Volume 13, Issue 31, 4 June 2026.
Oil‐rich food contact dramatically amplifies MNP release from plastic takeout containers, producing oil‐coated nanoplastics with altered surface properties and rapid membrane‐disruptive effects. These particles cause severe intestinal barrier damage and immune dysfunction in mice, and risk modeling suggests that long‐term gastrointestinal burdens may ...
Ruwen Xie, Gulimire Yilihan, Qiong Chen, Dachuan Lin, Zhen Liu, Mengyi Yuan, Yujia Wang, Haoteng Xu, Weishang Zhou, Wanxin Gong, Yueer Li, Chen Peng, Tong Yang, Peng Gao, Qing Liu, Xin‐Hua Feng, Mu Xiao, Chao Jiang   +17 more
wiley   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source