Results 131 to 140 of about 353,976 (345)

The Socioeconomic Impacts of the Upper Atmosphere Effects on LEO Satellites, Communication and Navigation Systems [PDF]

, 2022
Pietro Vermicelli, Sara Mainella, Lucilla Alfonsi, Anna Belehaki, Dalia Burešová, Reko Hynönen, Vincenzo Romano, Ben A. Witvliet   +7 more
openalex   +1 more source

Determining potential 30/20 GHZ domestic satellite system concepts and establishment of a suitable experimental configuration [PDF]

NASA is conducting a series of millimeter wave satellite communication systems and market studies to: (1) determine potential domestic 30/20 GHz satellite concepts and market potential, and (2) establish the requirements for a suitable technology ...
Anzic, G., Stevens, G. H.
core   +1 more source

Natural Resistance to Ovarian Hyperstimulation Syndrome in Estrildid Finches Reveals Macrophage GPR183 as a Potential Therapeutic Target

Advanced Science, EarlyView.
Ovarian macrophage depletion reverses OHSS resistance in estrildid finches and exacerbates OHSS symptoms in rats. Activating macrophage GPR183 alleviates OHSS by reducing pro‐inflammatory factors, increasing immunomodulatory molecules, remodeling CD44/SDC4‐mediated communication, and restoring immune homeostasis.
Xiaofei Yan, Yongjie Huang, Jiabao Yang, Su Ma, Songsong Liu, Xuan Huang, Juergen Brosius, Huaping Zheng, Bing Yao, Li Chen, Shanshan Lai, Cheng Deng   +11 more
wiley   +1 more source

SOFTWARE AND HARDWARE FOR MODELING A BROADBAND SATELLITE COMMUNICATION SYSTEM

, 2021
Mariya Buravleva, Davyd Klikno, A. B. Gladyshev   +2 more
openalex   +2 more sources

Description and performance of a digital mobile satellite terminal [PDF]

A major goal of the Mobile Satellite Experiment (MSAT-X) program at the Jet Propulsion Lab (JPL) is the development of an advanced digital terminal for use in land mobile satellite communication.
Divsalar, D., Jedrey, T., Lay, N., Parkyn, J.   +3 more
core   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

A depolarization and attenuation experiment using the CTS satellite. Volume 1: Experiment description [PDF]

An experiment for measuring precipitation attenuation and depolarization on the Communications Technology Satellite (CTS) 11.7 GHz downlink is described.
Bostian, C. W., Holt, S. B., Jr., Kauffman, S. R., Manus, E. A., Marshall, R. E., Stutzman, W. L., Wiley, P. H.   +6 more
core   +1 more source

Tunable High‐Performance Metamaterial Filters Based on Novel SRR Architectures

Advanced Science, EarlyView.
Based on two novel SRR configurations and two independent SRR integration approaches, four tunable bandpass metamaterial filters were fabricated with an ultra‐thin ceramic substrate. Among them, SM‐2 achieves over 97% electromagnetic wave transmittance, with a minimal 1.15% deviation in its resonant frequency prediction, making them promising ...
Lingxi Qu, Liya Zheng, Ruopeng Liu, Chunlin Ji, Bin Li   +4 more
wiley   +1 more source

Intelligent fault isolation and diagnosis for communication satellite systems [PDF]

Discussed here is a prototype diagnosis expert system to provide the Advanced Communication Technology Satellite (ACTS) System with autonomous diagnosis capability.
Durkin, John, Petrik, Edward J., Tallo, Donald P.   +2 more
core   +1 more source

Quantum Nanomedicine and Quantum Biomaterials

Advanced Science, EarlyView.
In this perspective, we define quantum nanomedicine and quantum biomaterials as a paradigm that harnesses quantum effects in nanomedicine and biomaterials, including quantum superposition, quantum coherence, quantum tunneling, topological quantum effects, and spin polarization, to achieve either spatiotemporally precise modulation of physiological ...
Xinyue Dai, Liang Chen, Wei Feng, Yu Chen   +3 more
wiley   +1 more source