Results 21 to 30 of about 2,462,591 (297)

World-volume action for fractional branes [PDF]

open access: yesNuclear Physics B, 2001
We study the world volume action of fractional Dp-branes of type IIA string theory compactified on the orbifold T^4/Z_2. The geometric relation between these branes and wrapped branes is investigated using conformal techniques. In particular we examine in detail various scattering amplitudes and find that the leading low-energy interactions are ...
Merlatti, P., Sabella, G.
openaire   +2 more sources

The influence of surface roughness on the rheology of immersed and dry frictional spheres [PDF]

open access: yes, 2019
Pressure-imposed rheometry is used to examine the influence of surface roughness on the rheology of immersed and dry frictional spheres in the dense regime.
Guazzelli, Elisabeth   +2 more
core   +5 more sources

Relationship of structure and stiffness in laminated bamboo composites [PDF]

open access: yes, 2018
Laminated bamboo in structural applications has the potential to change the way buildings are constructed. The fibrous microstructure of bamboo can be modelled as a fibre-reinforced composite.

core   +2 more sources

Thermal performance in heat exchangers by the irreversibility, effectiveness, and efficiency concepts using nanofluids [PDF]

open access: yesЖурнал інженерних наук, 2020
The objective of the work is to obtain the outlet temperatures of the fluids in a shell and tube heat exchanger. The second law of thermodynamics is applied through the concepts of efficiency, effectiveness, and irreversibility to analyze the results ...
Nogueira E.
doaj   +1 more source

Synthetic Myocardial Extracellular Volume Fraction

open access: yesJACC: Cardiovascular Imaging, 2017
Myocardial extracellular volume fraction (ECV) assessed by cardiac magnetic resonance (CMR) estimates the proportion of myocardial extracellular space relative to its cellular component. Conventionally, ECV calculation requires knowledge of the patient’s hematocrit (Hct). Treibel et al. [(1)][1]
Fent, Graham J.   +9 more
openaire   +4 more sources

Soot volume fraction profiling of asymmetric diffusion flames through tomographic imaging [PDF]

open access: yes, 2014
This paper presents the 3-D (three-dimensional) reconstruction of soot volume fraction of diffusion flames based on tomographic imaging and image processing techniques.
Hossain, Md. Moinul, Lu, Gang, Yan, Yong
core   +1 more source

Effect of shallow straight-joint braided fabric geometrical parameters on fiber volume fraction

open access: yesScience and Engineering of Composite Materials, 2012
This research paper establishes the relationship between fabric parameters and fiber volume fraction through analyzing the representative unit cell of the 2.5D shallow straight-joint preform.
Guan Tianru   +3 more
doaj   +1 more source

Experimental study on effect of oxygen volume fraction on spontaneous combustion characteristics of coal

open access: yesMeikuang Anquan, 2023
In order to study the effect of oxygen volume fraction on the spontaneous combustion of coal oxidation at low temperature, the non-adhering coal from a mine in Inner Mongolia was taken as the research object.
DING Xuqin, ZHANG Leilin
doaj   +1 more source

On measuring colloidal volume fractions [PDF]

open access: yesSoft Matter, 2012
11 ...
Poon, Wilson C. K.   +2 more
openaire   +2 more sources

Influence of Particle Sizes and Volume Fractions on Fatigue Crack Growth Rates of Aerospace Al-Alloys Composites [PDF]

open access: yesArchives of Metallurgy and Materials
Recently, the need to develop fuel efficient transport systems has led to the development of a range of materials of low density, high stiffness and high strength each can be made at a reasonable cost.
I. Uygur
doaj   +1 more source

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