Results 91 to 100 of about 91,187 (349)

A Deeper Look at the New Milky Way Satellites: Sagittarius II, Reticulum II, Phoenix II, and Tucana III

, 2018
We present deep Magellan/Megacam stellar photometry of four recently discovered faint Milky Way satellites: Sagittarius II (Sgr II), Reticulum II (Ret II), Phoenix II (Phe II), and Tucana III (Tuc III).
Caldwell, Nelson, Carlin, Jeffrey L., Crnojević, Denija, Hughes, Allison K., Mutlu-Pakdil, Burçin, Sand, David J., Spekkens, Kristine, Willman, Beth, Zaritsky, Dennis   +8 more
core   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

An Evaluation of Optimization Algorithms for the Optimal Selection of GNSS Satellite Subsets

Remote Sensing
Continuous advancements in GNSS systems have led, apart from the broadly used GPS, to the development of other satellite systems (Galileo, BeiDou, GLONASS), which have significantly increased the number of available satellites for GNSS positioning ...
Abdulaziz Alluhaybi, Panos Psimoulis, Rasa Remenyte-Prescott   +2 more
doaj   +1 more source

THE SUCCESS OF SATELLITE GRAVIMETRY IN GEOPHYSICAL INVESTIGATIONS [PDF]

Geological Behavior
Terrestrial measurements of gravity data are limited to only accessible areas. Areas that are not easily accessible due to lack of access route, security, cost etc. are found unfavorable for terrestrial measurements.
Ahmad Alhassan, Okoro Ernest chidi, Mohammed Auwal Adamu, Salisu Tata, Muhammad Shettima Nur, Auwal Aliyu, Yusuf Abdulhameed   +6 more
doaj   +1 more source

Launch summary for 1980 [PDF]

Sounding rockets, artificial Earth satellites, and space probes launched betweeen January 1 and December 31, 1980 are listed. Data tabulated for the rocket launchings show launching site, instruments carried, date of launch, agency rocket identification,
Vostreys, R. W.
core   +1 more source

Gravitomagnetism and gravitational waves

, 2010
After extensively reviewing general relativistic gravitomagnetism, both historically and phenomenologically, we review in detail the so-called magnetic components of gravitational waves (GWs), which have to be taken into account in the context of the ...
Corda, Christian, Iorio, Lorenzo
core   +1 more source

3D Soft Hydrogels Induce Human Mesenchymal Stem Cells “Deep” Quiescence

Advanced Healthcare Materials, EarlyView.
Three‐dimensional soft hydrogels mimicking the bone marrow niche induce deep quiescence in human mesenchymal stem cells. Unlike 2D culture, 3D matrices halt proliferation, regulate cell‐cycle and quiescence markers, and downregulate mTORC1 signaling, preserving stem cell phenotype and therapeutic potential ex vivo.
David Boaventura Gomes, Timo Rademakers, Ana Filipa Henriques Lourenço, Andrea Calore, Clarissa Tomasina, Denis van Beurden, Jinjie Venema, Bryan Chömpff, Hong Liu, Nicole Bouvy, Sandra Camarero‐Espinosa, Lorenzo Moroni   +11 more
wiley   +1 more source

Intelligent Satellite Orbit Prediction Based on Time Series Analysis [PDF]

فصلنامه علوم و فناوری فضایی, 2014
In this paper, a new approach for orbital position prediction of satellites, is introduced. As traditional methods are based on keplerian equations of motion, orbital disturbances are uasualy neglected for simplicity.
D. Bustan, N. Pariz, S. K. HosseiniSani
doaj  

Improving the Ability of Image Sensors to Detect Faint Stars and Moving Objects Using Image Deconvolution Techniques

Sensors, 2010
In this paper we show how the techniques of image deconvolution can increase the ability of image sensors as, for example, CCD imagers, to detect faint stars or faint orbital objects (small satellites and space debris).
Octavi Fors, Jorge Núñez, Xavier Otazu, Albert Prades, Robert D. Cardinal   +4 more
doaj   +1 more source

First preliminary tests of the general relativistic gravitomagnetic field of the Sun and new constraints on a Yukawa-like fifth force from planetary data

, 2007
The general relativistic Lense-Thirring precessions of the perihelia of the inner planets of the Solar System are about 10^-3 arcseconds per century. Recent improvements in planetary orbit determination may yield the first observational evidence of such ...
Adelberger, Ashby, Barker, Bertolami, Bertotti, Ciufolini, Ciufolini, Ciufolini, Ciufolini, Cugusi, Damour, de Sitter, Dvali, Everitt, Everitt, Fienga, Fischbach, Fitch, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Krasinsky, L. Iorio, Lense, Lucchesi, Lucchesi, Lue, Mashhoon, Mecheri, Murphy, Newhall, Nordtevdt, Nordtvedt, Nordtvedt, Paternò, Pijpers, Pijpers, Pitjeva, Pitjeva, Reynaud, Ries, Ruggiero, Schiff, Sereno, Sereno, Sereno, Soffel, Standish, Stella, Thorne, Will   +54 more
core   +1 more source