Results 111 to 120 of about 368,263 (301)

The Sensitivity of Nucleosynthesis in Type I X-ray Bursts to Thermonuclear Reaction-Rate Variations [PDF]

open access: yes, 2008
We examine the sensitivity of nucleosynthesis in Type I X-ray bursts to variations in nuclear rates. As a large number of nuclear processes are involved in these phenomena -with the vast majority of reaction rates only determined theoretically due to the lack of any experimental information- our results can provide a means for determining which rates ...
arxiv   +1 more source

Contactless Tracking of Decomposition in Self‐Reporting Ceramic Cr‐Al‐B Coatings

open access: yesAdvanced Materials Interfaces, EarlyView.
Proof of concept for contactless tracking of decomposition in self‐reporting ceramic Cr‐Al‐B coatings in extreme environments by contactless resistivity measurements is demonstrated. To verify the results, high resolution in situ and ex situ methods are employed.
Peter J. Pöllmann   +13 more
wiley   +1 more source

Particle module of Piernik MHD code [PDF]

open access: yes, 2010
Piernik is a multi-fluid grid magnetohydrodynamic (MHD) code based on the Relaxing Total Variation Diminishing (RTVD) conservative scheme. The original code has been extended by addition of dust described within the particle approximation.
Drążkowska, Joanna   +2 more
core   +2 more sources

Numerical self-consistent stellar models of thin disks

open access: yes, 2005
We find a numerical self-consistent stellar model by finding the distribution function of a thin disk that satisfies simultaneously the Fokker-Planck and Poisson equations.
Aarseth   +41 more
core   +1 more source

Analysis of Polar Motion Variations from 170-year Observation Series [PDF]

open access: yesTransactions of the Institute of Applied Astronomy, 2012, Vol. 26, pp. 44-53, 2013
This work is devoted to investigation of low frequency variations in Polar motion (PM). It has been shown that the main PM features can be effectively investigated using not only time series of the Pole coordinates, but also using series of latitude variations obtained from observations at one observatory.
arxiv  

Novel Use of Laser Zone‐Drawing on Nanofibers Enables Ultra‐Fast Thermal Kinetics and Precise Diameter Control

open access: yesAdvanced Materials Technologies, EarlyView.
This work explores the thermal kinetics of laser‐zone‐drawn electrospun nanofibers. Laser‐zone drawing is a technique that allows for localized heating of nanofiber segments, which results in better mechanical drawing. The high surface‐to‐volume ratio of nanofibers allows for ultrafast thermal kinetics at small diameters.
Matthew D. Flamini   +5 more
wiley   +1 more source

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets

open access: yesThe Astrophysical Journal Supplement Series
Discovering and characterizing exoplanets at the outer edge of the transit method’s sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines.
Paul A. Dalba   +31 more
doaj   +1 more source

Fully Passive Electrochemical Oxygen Sensor Enabled With Organic Electrochemical Transistor

open access: yesAdvanced Materials Technologies, EarlyView.
A wireless oxygen sensor that operates with low power without batteries, using organic electrochemical transistors (OECTs) powered by near‐field communication (NFC) is presented. The sensor combines an oxygen‐permeable membrane and a gel electrolyte to detect oxygen in air and complex liquids, making way for sustainable sensor technologies.
Lia Giulia D'Amico   +9 more
wiley   +1 more source

An Empirical Study On Imaging Sensitivity Of SKA1-LOW Based on Point Source Sensitivity

open access: yesThe Astronomical Journal
The Square Kilometre Array (SKA) radio telescope will achieve unparalleled sensitivity and angular resolution, substantially progressing our research into the formation and development of the early universe.
Zhaotong Xie   +4 more
doaj   +1 more source

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