Results 71 to 80 of about 42,876 (257)

Analysis of the Ranging Capability of a Space Debris Laser Ranging System Based on the Maximum Detection Distance Model

Remote Sensing
Based on the radar equation and system noise characteristics, the maximum detection range model of a space debris laser ranging system at a 1064 nm wavelength is established, taking into account the factors of atmospheric transmission and sky background ...
Mingliang Zhang, Guanyu Wen, Cunbo Fan, Bowen Guan, Qingli Song, Chengzhi Liu, Shuang Wang   +6 more
doaj   +1 more source

Thermally Modulated Metasurface Sensor for Dynamic and Time‐Resolved Isolation of Extracellular Vesicles

Advanced Materials, EarlyView.
A thermally adaptive plasmonic metasurface, functionalized with poly(N‐isopropylacrylamide) (PNIPAM) and anti‐CD63 antibodies, enables precise, on‐demand capture and release of extracellular vesicles (EVs). Delivering high recovery, improved purity, and intact vesicle structure, the platform offers a versatile, label‐free solution for real‐time EV ...
Beyza Nur Kucuk, Eylul Gulsen Yilmaz, Yusuf Aslan, Emre Ece, Özgecan Erdem, Murat Alp Gungen, Bengi Özgün Öztürk, Fatih Inci   +7 more
wiley   +1 more source

A Deployment-Oriented Case Study of YOLO-Based Model Compression for On-Board Space Debris Detection

Information
Space debris presents a growing operational risk to spacecraft, especially in low Earth orbit, where collisions can generate further debris and increase future collision probability. Active debris removal and in-orbit servicing require robust close-range
Liam Kerr, Ognjen Arandjelović
doaj   +1 more source

Study on an Impact Detection of Space Debris via Microwave

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2008
Microwave emissions due to hypervelocity impacts have been detected by heterodyne receivers in the ground experiments using an accelerator. We aim to establish the detection system of space debris impacts on a space structure via microwave. The emitted powers at several frequencies due to the impact velocity of 10km/sec are estimated from the ...
Soma, Eriko, Maki, Kenichiro, Takano, Tadashi, Sano, Masatoshi   +3 more
openaire   +2 more sources

Bubble Formation Control: Fabrication of Centimeter‐Sized Tissue‐Like Constructs by Catalase‐Coated Oxygen‐Releasing Hydrogel

Advanced Materials, EarlyView.
Oxygen‐releasing hydrogels are widely used to support cell survival in 3D cultures and to promote wound healing. However, incorporating catalase to convert H2O2 into O2 often generates additional oxygen bubbles, leading to material instability which rarely addressed.
Sukulya Bunuasunthon, Isabel F. Amaral, Ana P. Pêgo, Michiya Matsusaki   +3 more
wiley   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

Advanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair, Hrisheekesh Thachoth Chandran, Karl Leo, Hans Kleemann   +3 more
wiley   +1 more source

Expected Impact of Glints from Space Debris in the LSST

The Astrophysical Journal Letters
We examine the simple model put forth in a recent note by Loeb regarding the brightness of space debris in the size range of 1–10 cm and their impact on the Rubin Observatory Legacy Survey of Space and Time (LSST) transient object searches.
J. Anthony Tyson, Adam Snyder, Daniel Polin, Meredith L. Rawls, Željko Ivezić   +4 more
doaj   +1 more source

A Space Non-Cooperative Target Recognition Method for Multi-Satellite Cooperative Observation Systems

Remote Sensing
Space non-cooperative target recognition is crucial for on-orbit servicing. Multi-satellite cooperation has great potential for broadening the observation scope and enhancing identification efficiency.
Yue Zhang, Jianyuan Wang, Jinbao Chen, Donghao Shi, Xiaotong Chen   +4 more
doaj   +1 more source

Sonoenzymatically Triggered Cascading Degradation of Bioresorbable Materials for On‐Demand Transient Triboelectric Implants

Advanced Materials, EarlyView.
Our SEA strategy provides an efficient and biosafe approach for the on‐demand removal of implanted bioresorbable materials through cascading degradation that couples ultrasound‐triggered rapid mechanical disintegration with subsequent enzymatic degradation.
Jinsong Kim, Dong‐Min Lee, Youngwook Chung, Byung‐Joon Park, Hyeon Mo, Jong Won Seon, Han‐Yup Yum, Bosung Kim, Byung‐Ok Choi, Sang‐Woo Kim   +9 more
wiley   +1 more source

Implementation of the Stack-CNN Algorithm for Space Debris Detection on FPGA Board

Applied Sciences
The detection of faint, fast-moving objects such as space debris, in optical data is a major challenge due to their low signal-to-background ratio and short visibility time.
Matteo Abrate, Federico Reynaud, Mario Edoardo Bertaina, Antonio Giulio Coretti, Andrea Frasson, Antonio Montanaro, Raffaella Bonino, Roberta Sirovich   +7 more
doaj   +1 more source