Results 51 to 60 of about 957,509 (334)

Increasing Lipid Nanoparticle mRNA Copy Number Improves Transfection Potency

open access: yesAdvanced Materials, EarlyView.
As lipid nanoparticle (LNP) systems are the leading platform for in vivo nucleic acid delivery, improving transfection potency of these systems is of considerable interest. In this work, we explored a post‐mixing formulation method involving a two‐step buffer exchange that increased the number of mRNA copies within each LNP while reducing the number of
Yao Zhang   +12 more
wiley   +1 more source

Characterization of an Optical Transfer Function–based Phasing Technique for India’s Large Segmented Mirror Telescope

open access: yesThe Astronomical Journal
The upcoming 10 m class large Indian telescope is proposed to be built using segmented mirror technology. To achieve diffraction-limited image quality with a segmented mirror telescope, it is important to phase mirror segments with very high precision ...
Radhika Dharmadhikari, Padmakar Parihar
doaj   +1 more source

Polarization Criterion in Targeted SETI Observation

open access: yesThe Astronomical Journal, 2023
In this paper, we propose a novel method for distinguishing extraterrestrial intelligence (ETI) signals from radio frequency interference (RFI) by leveraging polarization features.
Jian-Kang Li   +7 more
doaj   +1 more source

Harvey Butcher : a passion for astronomical instrumentation [PDF]

open access: yes, 2014
: This paper covers some aspects of the scientific life of Harvey Butcher who was the Director of the Research School for Astronomy and Astrophysics at the Australian National University in Canberra from September 2007 to January 2013.
Bhathal, Ragbir (R7283), Ragbir Bhathal
core  

The Evolution of Optical Instrumentation, Laser Technology, and Scientific Thought: the Ramon Maria Aller Astronomical Activities and Arab Astronomy [PDF]

open access: yes, 2020
This Doctoral Dissertation was written by Hatem Abdullah Al-Ameryeen under the direction of José Ángel Docobo, Full Professor of Astronomy and Director of the Ramón María Aller Astronomical Observatory (OARMA) at the University of Santiago de ...
Abdullah Hamdan Al-Ameryeen, Hatem
core  

Robust Spin Splitting and Fermiology in the Layered Altermagnet CoNb4${\rm CoNb}_4$Se8${\rm Se}_8$

open access: yesAdvanced Materials, EarlyView.
The emergence of an altermagnetic phase is demonstrated in the cobalt‐intercalated superconducting 2H‐NbSe2 polymorph. A combined theoretical and experimental approach directly probes the magnetism, the altermagnetic lifting of Kramers degeneracy, and the electronic phase space, establishing CoNb4Se8 as the first g‐wave altermagnetic layered material ...
Alessandro De Vita   +47 more
wiley   +1 more source

Modeling the Wavelength Dependence of Pixel Response Nonuniformity of a CCD Sensor

open access: yesThe Astronomical Journal
Precision measurements in astronomy require stringent control of systematics such as those arising from imperfect correction of sensor effects.
Zun Luo   +4 more
doaj   +1 more source

Osservazioni astronomiche con veicoli spaziali

open access: yesAnnals of Geophysics, 1963
A survey is given on the most important astronomical<br />and astrophysical problema, and expecially the solar ones, which need an<br />essential contribution from observations made by artiflcial satellites.
M. CIMINO
doaj   +1 more source

Synthesis of Bulk Superconducting LiNbO2 Crystals Through CaH2 Reduction

open access: yesAdvanced Materials, EarlyView.
CaH2 reduction reconstructively transforms insulating LiNbO3 single crystals into superconducting bulk LiNbO2 with a critical temperature of Tc = 14.4 K. Scanning electron microscopy reveals large‐volume, high‐yield phase conversion. Magnetization measurements demonstrate a robust ∼ 77% Meissner shielding fraction, establishing bulk superconductivity ...
Ryan Paxson   +19 more
wiley   +1 more source

Modeling the Technical Specifications for Future Multiobject-spectroscopy Instrumentation

open access: yesThe Astronomical Journal
We investigate a proof-of-concept code designed to model the functionality of current-generation astronomical fiber-positioner instruments. This code accommodates an arbitrary number of fiber probes and astronomical targets.
Ummee T. Ahmed   +2 more
doaj   +1 more source

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