Results 81 to 90 of about 583,316 (279)
Using the Joint Probabilistic Data Association Filter for Improving Star Trackers Performance to Accurate Attitude Determination of Spacecrafts [PDF]
فصلنامه علوم و فناوری فضایی, 2016 Automatic control of satellites and spacecrafts, has been extensively paid attention. Attitude determination is one of the most important procedures to control a spacecraft. Star trackers are widely used for attitude determining.
Ahmad Reza Sadeghi +2 more
doaj
Designing star trackers to meet micro-satellite requirements [PDF]
, 2006 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2006.Includes bibliographical references (p. 179-187).Star trackers provide numerous advantages over other attitude sensors because of their ability to provide ...
Huffman, Kara M. (Kara Marie)
core
Molecular Oncology, EarlyView.Extracellular vesicle (EV) lipidomic profiling of plasma and ascites from patients with high‐grade serous ovarian cancer and of ovarian cancer cell lines reveals enrichment of triglycerides (TGs), diacylglycerols (DGs), phosphatidylcholine (PCs), sphingomyelins (SMs), reflecting tumor metabolic reprogramming.
Shikha Rani +9 more
wiley +1 more source
Space Debris Detection and Tracking Using Star Trackers [PDF]
, 2019 The near Earth space environment is becoming crowded with space debris and must be regarded a critical resource for future spacecraft missions. To ensure continuous access to this resource, future Low Earth orbit users have responsibility, both for savvy
Jørgensen, Peter S. +5 more
core
Molecular Oncology, EarlyView.Isocitrate dehydrogenase 1 (IDH1) mutations are highly recurrent in multiple human cancer types, including cholangiocarcinoma and glioma. IDH1 R132C is the most common IDH1 mutation in cholangiocarcinoma and likely arises from APOBEC3A‐ or APOBEC3B‐mediated deamination.
Kelly E. Butler +3 more
wiley +1 more source
Design and Testing of the Star Trackers for the SEAM Nanosatellite
, 2015 Star trackers are instruments for attitude determination and are a must for spacecrafts whereprecise attitude knowledge is needed. Star trackers take accurate images of the stars and thenperform image processing and pattern recognition in order to ...
Shterev, Nikola
core +2 more sources
Calibration Techniques for Low-Cost Star Trackers [PDF]
, 2009 This study presents a series of cost-e_ective strategies for calibrating star trackers for microsatellite missions. We examine three such strategies that focus on the calibration of the imaging detector, geometric lab calibration, and optical calibration
Enright, John, Dzamba, Tom
core +1 more source
AI-Based Real-Time Star Tracker
, 2023 Many systems on Earth and in space require precise orientation when observing the sky, particularly for objects that move at high speeds in space, such as satellites, spaceships, and missiles.
Guy Carmeli, Boaz Ben-Moshe
core +1 more source
Molecular Oncology, EarlyView.Enterotoxigenic Bacteroides fragilis is a gut bacterium linked to bowel cancer. We propose that its toxin acts along two routes: at the cell surface, cutting the adhesion protein E‐cadherin and triggering inflammation; and inside the cell, delivered by bacterial vesicles, switching on NOD1 and cancer stem cell programs.
Kangchan Choi +2 more
wiley +1 more source
Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies
FEBS Open Bio, EarlyView.We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli +8 more
wiley +1 more source