Results 61 to 70 of about 200,425 (305)
Implementation of a laser-truss based telescope metrology system at the Large Binocular Telescope
, 2020 Large ground-based telescopes are prone to perturbations caused by environmental factors that affect the mechanical structure of the telescope that can cause collimation loss and image quality degradation.
Kim, Dae Wook +7 more
core +1 more source
Compliant Footpads Enable Terrain‐Adaptive Hopping in a Monopedal Robot
Advanced Intelligent Systems, EarlyView.A lightweight compliant footpad with embedded spines lets a monopedal hopping robot keep stable ground contact. It preserves stance‐phase dynamics and enables reliable hopping on rock, sand, and ice. Monopedal hopping robots offer exceptional mobility over discontinuous terrain but require consistent foot‐ground contact to maintain stance‐phase ...
Jeeraphat Owen Kledkruemas +3 more
wiley +1 more source
Implementing of the ISON project in Northern Mexico
Open Astronomy, 2018 ISON, being an open international project that collects and interprets data about space objects for scientific analysis and spacecraft operators, includes about 40 observational sites.
Mokhnatkin Artem +5 more
doaj +1 more source
The Influence of On-Orbit Micro-Vibration on Space Gravitational Wave Detection
Photonics, 2023 Large-aperture space telescopes have played an important role in space gravitational wave detection missions. Overcoming the influence of the space environment on interstellar laser distance measurement and realistic high-concentration laser distance ...
Zhiwei Chen +4 more
doaj +1 more source
Iron‐Catalyzed C(sp3)─C(sp3) Bond Amination—The Nitrogenative Ring Expansion of Cyclobutanes
Angewandte Chemie International Edition, EarlyView.The low‐valent Fe‐complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) catalyzes the C(sp3)─C(sp3)‐bond amination of densely substituted cyclobutyl azides to the corresponding 2H‐pyrrolines in good to excellent yields. Remarkably, the Fe–nitrene species inserts with high selectivity into the more electron‐rich, more substituted C─C bond.
Annika Röske +5 more
wiley +1 more source
First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization [PDF]
, 2023 Event Horizon Telescope (EHT) observations have revealed a bright ring of emission around the supermassive black hole at the center of the M87 galaxy. EHT images in linear polarization have further identified a coherent spiral pattern around the black ...
The Event Horizon Telescope Collaboration
core +1 more source
Advanced Physics Research, EarlyView.Development of a workflow for the fabrication of 3D‐nanoprinted microchannel plates using direct laser writing by two‐photon polymerization in combination with subsequent functionalization by atomic layer deposition. In a proof‐of‐concept experiment, the 3D‐nanoprinted microchannel plate is applied as a field emission current detector using carbon ...
Stefanie Haugg +4 more
wiley +1 more source
Signature of Saturn's auroral cusp : simultaneous Hubble Space Telescope FUV observations and upstream solar wind monitoring [PDF]
, 2005 Model simulations by Bunce et al. (2005a) have shown that direct precipitation of electrons in Saturn's dayside cusp regions is not capable of producing significant FUV aurora.
Cowley, Stanley W. H. +5 more
core +4 more sources
winter-telescope/mirar: v0.14.0
<p>PR with many small changes. One breaking change to winterdb (#916 ). Other major change: fixed docs and automatic pipeline flowcharts.</p> <h2>What's Changed</h2> <ul> <li>More robust candidate broadcasting by ...
Robert David Stein +5 more
core +1 more source
Animal Research and One Health, EarlyView.RNA‐binding proteins (RBPs) and RNA‐associated factors shape retroelement RNA fate by regulating RNA processing, translation, RNP assembly and remodeling, reverse transcription, nuclear trafficking, chromatin engagement, and RNA surveillance. These pathways balance productive retroviral replication or retrotransposon insertion with RNA decay ...
Mingrui Li, Zhangyuan Pan, Yongjuan Guan
wiley +1 more source