Results 101 to 110 of about 6,961,611 (296)

Progress and Development Trend of Space Backlight Detection Imaging Technology

Space: Science & Technology
Based on the high-resolution detection and imaging requirements for space targets under future backlighting conditions, this paper reviews the development and application trends of space backlighting detection and imaging technology.
Chengchao Bai, Fan Xu, Kaisong Zhang, Weiyao Li, Jifeng Guo   +4 more
doaj   +1 more source

Microscale 3D‐Printed Digital Strain Switches for Embedded Mechanical Computation

Advanced Materials Technologies, EarlyView.
Microscale 3D‐printed strain switches on flexible films convert deformation into native digital signals at geometry defined thresholds. A closed form model predicts switching from 3000 to 15 000 microstrain and is validated across 110 devices. Reliable ohmic closure and strain activated AND, OR, and XOR logic point toward low‐power mechanical ...
Regan Kubicek, Daniel Quinn, Gabriel Smith, Sarah Bergbreiter   +3 more
wiley   +1 more source

Space debris radar experiments at the medicina VLBI dish

, 2009
In 2007 three space debris detection tests were performed in the framework of a monitoring program carried out by the Istituto Nazionale di Astrofisica - INAF - in collaboration with the Italian Space Agency - ASI. The observations were made by using the
Di Martino M, Nabatov A, Konovalenko A, Schilliro F, Bartolini M, Salerno E, Anselmo L, Pluchino S, Montebugnoli S, Portelli C, Pupillo G   +10 more
core  

Laser-Based Active Debris Removal: A Satellite Constellation Approach for Mitigating Small-Sized Space Debris in Low Earth Orbit [PDF]

The growing issue of space debris poses a critical challenge as Earth’s orbits become increasingly con- gested due to expanding space activities. Low Earth Orbit (LEO) is particularly affected, with an estimated 900 000 debris fragments ranging from 1 ...
Sfasciamuro, Domenico Edoardo, Mauro, Stefano, Mauro, Anna, Semenzin, Silvia, Bariselli, Federico, Petronella, Nicolo, Helber, Bernd, Lopez, Francesco   +7 more
core   +1 more source

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

Self‐Sealing Microneedles Improve Precision and Reduce Reflux in Subretinal Cell Transplantation

Advanced Materials Technologies, EarlyView.
Ultrafine 49G microneedles enable subretinal delivery of induced pluripotent stem cell‐derived retinal pigment epithelial cells through a 50 µm outer diameter tip. Compared with conventional 38G microcannulas, these microneedles reduce cell suspension reflux in a rabbit model, highlighting the potential of microinvasive delivery instruments to improve ...
Jared Ching, Hinako Ichikawa, Aya Motoyoshi, Shin Tanaka, Liam Morrow, Satoshi Shirae, Noriko Sakai, Shohei Kitahata, Michiko Mandai, Kazuaki Kadonosono   +9 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

AI‐Powered Framework for Evaluating Drug Efficacy for Three‐Dimensional In Vitro Cancer Models in Robot‐Assisted Production

Advanced Robotics Research, EarlyView.
An AI‐powered, robot‐assisted framework automatically produces, images, and analyzes 3D tumor spheroids to evaluate drug efficacy. Integrated modules handle spheroid formation, live/dead staining, brightfield imaging, and automated image analysis, including spheroid segmentation, viability and metrics to assess the drug treatment efficacy. The workflow
Dalia Mahdy, Jesus Nieves, Lukas Königer, Matthias Peindl, Fabio Erhard, Marc Möllmann, Anke Klingner, Markus Münig, Bibin Babu, Thomas Schwarz, Marco Metzger, Gudrun Dandekar, Maximiliane Wußmann, Jan Hansmann   +13 more
wiley   +1 more source

Using antennae for in-situ measurements of micrometeoroid and space debris impact

, 2022
6 S.The hypervelocity impact of micrometeoroids and space debris produce a transient plasma cloud when colliding with spacecraft surfaces. We studied the feasibility of using the interactions between the fast expanding impact plasma clouds with ...
Gulde, Max, Hilgers, A., Schimmerohn, Martin   +2 more
core  

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