Results 31 to 40 of about 7,834,536 (290)

Ratio of Nucleon Mass and Electron Mass [PDF]

open access: yesNature, 1959
IN classical physics, the value of the fine structure constant ɛ2/ħc is 1/137. The value of the pion-nucleon interaction constant g 2/ħc is about 14.
openaire   +1 more source

The Application of Isotope Ratio Mass Spectrometry to Forensic Casework

open access: yes, 2023
The purpose of this chapter is to discuss the use of isotope ratio mass spectrometry (IRMS) and isotopic abundances in their application to forensic science and forensic intelligence.
Meikle, J, Jones, K
core   +1 more source

Maximized Energy Density of RuO2//RuO2 Supercapacitors through Potential Dependence of Specific Capacitance

open access: yesChemElectroChem, 2020
In this study, a stepwise cyclic voltammetry approach was proposed to clarify the potential dependence of specific capacitance for reduced graphene oxide and ruthenium oxide electrodes. Based on the relationship between specific capacitance and potential,
Yilun Wang   +7 more
doaj   +1 more source

On the evolution of the black hole: spheroid mass ratio [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2006
AbstractWe present the results of a study which uses the 3CRR sample of radio‐loud active galactic nuclei (AGN) to investigate the evolution of the black‐hole:spheroid relation in the most massive early‐type galaxies from 0 < z < 2. Radioloud unification is exploited to obtain virial (line‐width) black‐hole mass estimates from the 3CRR quasars ...
McLure, R   +4 more
openaire   +6 more sources

Sex-specific energy expenditure during the Alaska mountain wilderness ski classic; insights from an Arctic winter expedition

open access: yesFrontiers in Physiology
PurposeThe Alaska Mountain Wilderness Ski Classic (AMWSC) is a self-supported and self-oriented winter expedition that occurs in the remote North American Brooks Range, ∼200 km north of the Arctic Circle.
Melynda S. Coker   +6 more
doaj   +1 more source

Modelling Rocket System Performance Parameters

open access: yesAcademy Journal of Science and Engineering, 2022
What distinguishes the rocket system from airbreathing engines is that the rocket carries its own propellants, fuel and oxidants.  The modern rocket was originally developed for ballistic missiles.
Nnorom Achara
doaj  

Ratio Shared Task 2019

open access: yes, 2019
<p>Ratio Shared Task 2019:</p> <p>Task 1 (same side classification)</p> <p> </p> <p>Task 2 (stance classification)</p ...
RATIO
core   +1 more source

Differential Mobility Spectrometry-Mass Spectrometry (DMS-MS) for Uranium Ion Prefiltration to Improve Isotope Ratio Analysis [PDF]

open access: yes, 2020
We demonstrate chemical noise filtration by differential mobility spectrometry (DMS) ahead of an ion trap mass analyzer. Use of DMS enables 10x improved accuracy in the isotope ratio measurement made for a sample of natural ...
Jacob T., Shelley   +3 more
core   +1 more source

Parametric Analysis of an Energy-Harvesting Device for a Riser Based on Vortex-Induced Vibrations

open access: yesEnergies, 2020
An energy-harvesting device for a riser based on vortex-induced vibration is proposed to overcome the power supply problem for a marine deep-water riser-monitoring device.
Xu Bai, Chuanyu Han, Yong Cheng
doaj   +1 more source

A lack of sexual dimorphism in width-to-height ratio in White European faces using 2D photographs, 3D scans, and anthropometry [PDF]

open access: yes, 2012
Facial width-to-height ratio has received a great deal of attention in recent research. Evidence from human skulls suggests that males have a larger relative facial width than females, and that this sexual dimorphism is an honest signal of masculinity,
Jones, Alex L.   +9 more
core   +1 more source

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