Results 31 to 40 of about 3,434,257 (301)

Light Trapping Textures Designed by Electromagnetic Optimization for Sub-Wavelength Thick Solar Cells [PDF]

open access: yes, 2013
Light trapping in solar cells allows for increased current and voltage, as well as reduced materials cost. It is known that in geometrical optics, a maximum 4n^2 absorption enhancement factor can be achieved by randomly texturing the surface of the solar
Ganapati, Vidya   +2 more
core   +1 more source

Weakly-Supervised Network for Detection of COVID-19 in Chest CT Scans

open access: yesIEEE Access, 2020
Deep Learning-based chest Computed Tomography (CT) analysis has been proven to be effective and efficient for COVID-19 diagnosis. Existing deep learning approaches heavily rely on large labeled data sets, which are difficult to acquire in this pandemic ...
Ahmed Mohammed   +7 more
doaj   +1 more source

Appearance of the canine meninges in subtraction magnetic resonance images [PDF]

open access: yes, 2014
The canine meninges are not visible as discrete structures in noncontrast magnetic resonance (MR) images, and are incompletely visualized in T1‐weighted, postgadolinium images, reportedly appearing as short, thin curvilinear segments with minimal ...
Frean, S P   +3 more
core   +2 more sources

Speaker Re-identification with Speaker Dependent Speech Enhancement [PDF]

open access: yes, 2020
While the use of deep neural networks has significantly boosted speaker recognition performance, it is still challenging to separate speakers in poor acoustic environments.
Hain, Thomas, Huang, Qiang, Shi, Yanpei
core   +2 more sources

Low-intensity electromagnetic field as a new engineering oriented bioaugmentation strategy for anammox granules

open access: yesFrontiers in Environmental Science, 2022
Improving the relative abundance of bacteria and their activity is still the basis for the efficient operation of anammox process. Here, biomagnetic effect was used to promote anammox granules.
Zhibin Wang   +8 more
doaj   +1 more source

Effect of doping on the optical gain and the spontaneous noise enhancement factor in quantum well amplifiers and lasers studied by simple analytical expressions [PDF]

open access: yes, 1988
The maximum optical gain and the spontaneous noise enhancement factor in quantum well structures are expressed as extremely simple functions that are accurate over a wide range of carrier densities.
Vahala, Kerry J., Zah, C. E.
core   +1 more source

Generic Finite Size Enhancement of Pairing in Mesoscopic Fermi Systems [PDF]

open access: yes, 2003
The finite size dependent enhancement of pairing in mesoscopic Fermi systems is studied under the assumption that the BCS approach is valid and that the two body force is size independent.
C. Thomson   +22 more
core   +4 more sources

Chemical enhancement of soil based footwear impressions on fabric [PDF]

open access: yes, 2012
This study investigates the enhancement of footwear impressions prepared with soils from different locations on a variety of fabric surfaces with different morphology.
Bandey, Helen   +3 more
core   +3 more sources

Dopuszczalność ulepszania natury ludzkiej (enhancement)

open access: yesEthics in Progress, 2015
The paper presents moral and legal aspects of the human’s nature enhancement in the context of answering the questions to what extent and to whom the modern technologies may be applied, which purpose is not the recovery (therapy), but the improvement of ...
Justyna Holocher   +1 more
doaj   +1 more source

Intracellular mechanisms underlying the nicotinic enhancement of LTP in the rat dentate gyrus [PDF]

open access: yes, 2008
We have previously shown that activation of nicotinic acetylcholine receptors (nAChRs) enhanced long-term potentiation (LTP) in the rat dentate gyrus in vitro via activation of α7 nAChR. In the present studies, mechanisms underlying the acute and chronic
Abel   +81 more
core   +1 more source

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