Results 31 to 40 of about 1,770,136 (289)

Adult skeletal muscle stem cell migration is mediated by a blebbing/amoeboid mechanism [PDF]

, 2011
Adult skeletal muscle possesses a resident stem cell population called satellite cells which are responsible for tissue repair following damage. Satellite cell migration is crucial in promoting rapid tissue regeneration but is a poorly understood ...
Collins-Hooper, Henry, Dash, Philip R., Otto, Anthony, Patel, Anand, Patel, Ketan   +4 more
core   +1 more source

Experimental Demonstration of High-Security and Low-CSPR Single-Sideband Transmission System Based on 3D Lorenz Chaotic Encryption

Photonics
Broadcast-style downlinks (e.g., PONs and satellites) expose physical waveforms despite transport-layer cryptography, motivating physical-layer encryption (PLE).
Chao Yu, Angli Zhu, Hanqing Yu, Yuanfeng Li, Mu Yang, Peijin Hu, Haoran Zhang, Xuan Chen, Hao Qi, Deqian Wang, Yiang Qin, Xiangning Zhong, Dong Zhao, Yue Liu   +13 more
doaj   +1 more source

Dynamic Limits on Planar Libration-Orbit Coupling Around an Oblate Primary

, 2012
This paper explores the dynamic properties of the planar system of an ellipsoidal satellite in an equatorial orbit about an oblate primary. In particular, we investigate the conditions for which the satellite is bound in librational motion or when the ...
CM Hartzel, DA Mendis, David Richardson, DJ Griffiths, DJ Scheeres, DJ Scheeres, Douglas Mathews, DR Criswell, EG Fahnestock, ES Gawlik, F Gabern, Gina Ma, J Bellerose, Jared M. Maruskin, JE Colwell, Julie Bellerose, Lara Mitchell, Macken Wong, P Lee, RA Werner, TJ Linde, Tri Nguyen, Usha Ganeshalingam, V Guibout, X Wang, Y Nakajima   +25 more
core   +1 more source

Next Generation High Throughput Satellite System [PDF]

, 2012
This paper aims at presenting an overview of the state-of-the-art in High Throughput Satellite (HTS) systems for Fixed Satellite Services (FSS) and High Density-FSS.
Alberty, Eric, Bousquet, Michel, Lacan, Jérôme, Radzik, José, Verelst, Greet, Vidal, Oriol   +5 more
core   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Dynamical friction on satellite galaxies

, 2005
For a rigid model satellite, Chandrasekhar's dynamical friction formula describes the orbital evolution quite accurately, when the Coulomb logarithm is chosen appropriately.
Fujii, Michiko, Funato, Yoko, Makino, Junichiro   +2 more
core   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Orbit Determination of China’s Space Station Using Real ISL Measurements of the Tianzhou-6 Spacecraft

International Journal of Aerospace Engineering
Under most circumstances, the current studies related to precision orbit determination (POD) using intersatellite link (ISL) measurements are limited to ISL ranging components.
Haijian Fang, Fan Wang, Xueming Yu, Baohua Wang, Jiasong Wang, Yufan He, Minzhang Han, Dan Wang, Jingqi Huang   +8 more
doaj   +1 more source

Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning

Satellite Navigation, 2023
Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision ...
Wenhao Zhang, Jinling Wang
doaj   +1 more source

Experimental Satellite Quantum Communications [PDF]

, 2014
Quantum Communications on planetary scale require complementary channels including ground and satellite links. The former have progressed up to commercial stage using fiber-cables, while for satellite links, the absence of terminals in orbit has impaired
Bacco, Davide, Bianco, Giuseppe, Dequal, Daniele, Gaiarin, Simone, Luceri, Vincenza, Vallone, Giuseppe, Villoresi, Paolo   +6 more
core   +2 more sources