Results 71 to 80 of about 15,243 (254)
Multipurpose Sun Sensor using CCD Detector
IFAC Proceedings Volumes, 1983 Abstract In the Frame of French Earth Observation Satellite Program (SPOT) MATRA has been selected by CNES to develop the Digital Sun Sensor (SSD).The different concepts considered and the major problems encountered during the definition study are explained.
S. Flamenbaum, P. Anstett
openaire +1 more source
Self-Powered Sun Sensor Microsystems
Procedia Chemistry, 2009 AbstractAn analog sun sensor has been designed based on shade profile proportional to the angle of incidence of incoming light projected onto a 2×2 array of photodiodes. This concept enables an autonomous self-powered optical system with two the main functions (electrical power generation for the amplifier and the optical position measurement ...
Wu, H. +4 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Development of Fudai Sun Sensor (FSS)
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, SPACE TECHNOLOGY JAPAN, 2009 This paper describes the design process of the Fudai sun sensor (FSS) installed in a 50-kg-class micro-satellite, SOHLA-1. The FSS has been developed by the students of Osaka Prefecture University (OPU) with technical support from the Japan Aerospace Exploration Agency (JAXA) and Advanced Engineering Services (AES) Co. Ltd.
OBATA, Takatoshi +3 more
openaire +2 more sources
Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions
Advanced Functional Materials, EarlyView.This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian +7 more
wiley +1 more source
Design and manufacturing of low cost system of sun sensors for attitude determination of CubeSats
This paper presents the design and manufacturing of a low-cost sun sensor system for attitude determination in CubeSats. CubeSats provide an economical and rapid means for space access, yet existing attitude determination subsystems are expensive and ...
Herrera Cruz, Miguel Angel
core +1 more source
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
Preliminary Calibration Results For a High-Precision CMOS Sun Sensor
, 2008 This paper describes a high-precision, miniature sun sensor under development at the University of Naples. The sensor is one of the innovative technology payloads that will be tested on board the Italian Space Agency micro-satellite platform, scheduled ...
Giancarlo Rufino +5 more
core +1 more source
The Logic-Based Supervisor Control for Sun-Tracking System of 1 MW HCPV Demo Plant: Study Case
Applied Sciences, 2012 This paper presents a logic-based supervisor controller designed for trackers for a 1MW HCPV demo plant in Taiwan. A sun position sensor on the tracker is used to detect the sun position, as the sensor is sensitive to the intensity of sun light.
Hong-Yih Yeh, Cheng-Dar Lee
doaj +1 more source
Advanced Functional Materials, EarlyView.A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo +7 more
wiley +1 more source