Results 11 to 20 of about 1,289,680 (293)

Analytical Model for the Tidal Evolution of the Evection Resonance and the Timing of Resonance Escape

open access: yes, 2020
A high-angular momentum giant impact with the Earth can produce a Moon with a silicate isotopic composition nearly identical to that of Earth's mantle, consistent with observations of terrestrial and lunar rocks.
Canup, Robin M.   +2 more
core   +1 more source

Effects of Apophenia on Multiple-Choice Exam Performance

open access: yesSAGE Open, 2014
There is a broad literature on the various issues related to effective exam construction applicable to both on-ground and online course delivery. These guidelines tend to support rather close contact between the instructor and the exam.
Stephen T. Paul   +3 more
doaj   +1 more source

A comprehensive review of nanostructured materials by ultrasonic nanocrystal surface modification technique

open access: yesThe Journal of Engineering, 2015
Nanostructured materials (NMs) possess outstanding properties than conventional coarse-grained (CG) materials. Hence designing potentially cost-efficient and environmentally products made of NMs with better are on high demand.
Auezhan Amanov, Young-Sik Pyun
doaj   +1 more source

Metabolic Engineering of Escherichia coli for Enhanced Production of Naringenin 7-Sulfate and Its Biological Activities

open access: yesFrontiers in Microbiology, 2018
Flavonoids are one of the predominant groups of plant polyphenols, and these compounds have significant effects on human health and nutrition. Sulfated flavonoids have more favorable attributes compared to their parent compounds such as increased ...
Luan L. Chu   +7 more
doaj   +1 more source

Catching a planet: A tidal capture origin for the exomoon candidate Kepler 1625b I [PDF]

open access: yes, 2018
The (yet-to-be confirmed) discovery of a Neptune-sized moon around the ~3.2 Jupiter-mass planet in Kepler 1625 puts interesting constraints on the formation of the system.
Hamers, Adrian S.   +1 more
core   +3 more sources

Production of a Novel Tetrahydroxynaphthalene (THN) Derivative from Nocardia sp. CS682 by Metabolic Engineering and Its Bioactivities

open access: yesMolecules, 2019
Nargenicin A1 is major secondary metabolite produced by Nocardia sp. CS682, with an effective antibacterial activity against various Gram-positive bacteria. Most Nocardia spp.
Ravindra Mishra   +6 more
doaj   +1 more source

معتقد التنجيم ورموزه على مسكوكات الجزيرة الفراتية واألناضول خالل القرنين السادس والسابع الهجريين Astrology as a Folk Life on Mesopotamian, and Anatolian Coins from the Sixth to Seventh H.AH Century [PDF]

open access: yesJournal of General Union of Arab Archaeologists, 2023
{AR} تتناول هذه الورقة البحثية موضوع التنجيم وبعض من رموزه (كالشمس والقمر) التي ظهرت على المسكوكات الإسلامية، في كل من الجزيرة الفراتية والأناضول خلال الفترة ما بين القرن السادس حتى القرن السابع الهجريين، حيث يُعد ظهورها أمر بالغ الأهمية؛ فإذ لم يكن ...
Fatima Mriziq Odeh Abu Shaqqal
doaj   +1 more source

CREATION AND APPROBATION OF A LOW-FREQUENCY RADIO ASTRONOMY ANTENNA FOR STUDIES OF OBJECTS OF THE UNIVERSE FROM THE MOON'S FARSIDE [PDF]

open access: yesRadio Physics and Radio Astronomy, 2021
Purpose: Theoretical and experimental studies of the active antenna – an element of the low-frequency radio telescope antenna array for the future observatory on the farside of the Moon.
I. N. Bubnov   +5 more
doaj   +1 more source

Novel Nargenicin A1 Analog Inhibits Angiogenesis by Downregulating the Endothelial VEGF/VEGFR2 Signaling and Tumoral HIF-1α/VEGF Pathway

open access: yesBiomedicines, 2020
Targeting angiogenesis is an attractive strategy for the treatment of angiogenesis-related diseases, including cancer. We previously identified 23-demethyl 8,13-deoxynargenicin (compound 9) as a novel nargenicin A1 analog with potential anticancer ...
Jang Mi Han   +4 more
doaj   +1 more source

Forming the Moon from terrestrial silicate-rich material [PDF]

open access: yes, 2013
Recent high-precision measurements of the isotopic composition of lunar rocks demonstrate that the bulk silicate Earth and the Moon show an unexpectedly high degree of similarity.
Anisichkin, V. F.   +2 more
core   +3 more sources

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