Results 201 to 210 of about 3,306,600 (250)

Improving the Volumetric Energy Density of Supercapacitors

Electrochimica Acta, 2016
Abstract Due to the low double-layer capacitance of activated carbons ( −2 ) and to their low density related to their large micro/meso porosity, the volumetric energy density of commercial supercapacitors remains low. Therefore, the use of pseudocapacitive oxides or nitrides as electrode materials can drastically improve the volumetric performance ...
Olivier Crosnier, Nicolas Goubard-Bretesché, Frédéric Favier   +2 more
exaly   +3 more sources

Volumetric Density Capture From a Single Image.

, 2006
We propose a new approach to capture the volumetric density of scattering media instantaneously with a single image. The volume is probed with a set of laser lines and the scattered intensity is recorded by a conventional camera.
Fuchs, C., Chen, T., Goesele, M., Theisel, H., Seidel, H. ; https://orcid.org/0000-0002-1343-8613   +4 more
openaire   +3 more sources

Volumetric Breast Density and Radiographic Parameters

2014
The detection of breast cancer relies on high-quality images from digital mammography. Optimal levels of compression force are unknown, and UK national guidelines recommend forces of less than 200N. However, large variations in compression forces exist and may be influenced by the mammography practitioner and the breast size and pain threshold of the ...
Jennifer Khan-Perez, Elaine Harkness, Claire Mercer, Megan Bydder, Jamie C. Sergeant, Julie Morris, Anthony Maxwell, Catherine Rylance, Susan M. Astley   +8 more
  +7 more sources

Ethnic Variation in Volumetric Breast Density

2012
Volumetric breast density was determined using Quantra TM (Hologic) in 1356 women undergoing routine breast screening. Self-reported ethnicity, age, HRT use, weight and height were also available. 1038 women declared themselves to be White (British or Irish), 71 Black, 77 Asian, 91 Jewish, 31 Mixed Race and 48 Other European.
Sadaf Hashmi, Jamie C. Sergeant, Julie Morris, Sigrid Whiteside, Paula Stavrinos, D. Gareth Evans, Tony Howell, Mary Wilson, Nicky B. Barr, Caroline R. M. Boggis, Susan M. Astley   +10 more
openaire   +3 more sources

Facile Preparation of Cobalt Hydroxide Based Supercapacitor with High Volumetric Energy Density at High Volumetric Power Density

2021 22nd International Conference on Electronic Packaging Technology (ICEPT), 2021
Developing supercapacitor electrodes with an ultra-high specific energy density at high power density and long cycle life is critical to future energy storage devices. However, it is still challenging to fabricate highperformance supercapacitors in a facile and scalable process.
Peng Liu, Fangcheng Wang, Zhuo Zhang, Jing Li, Hongjin Fan, Cheng Yang   +5 more
openaire   +1 more source

Breast Density Estimation: Correlation of Mammographic Density and MR Volumetric Density

2003
Studies have demonstrated a strong correlation between mammographic breast density and breast cancer risk. mammographic breast density may therefore be used as a surrogate marker for monitoring the response to treatment in studies of breast cancer prevention or intervention methods.
Chan Heang-Ping, Lubomir M. Hadjiiski, Marilyn A. Roubidoux, Mark A. Helvie, Sophie Paquerault, Berkman Sahiner, Jun Wei, Chuan Zhou, Thomas Chenevert, Mitchell M. Goodsitt   +9 more
openaire   +1 more source

A New Step-Wedge for the Volumetric Measurement of Mammographic Density

2006
The volume of dense breast tissue can be calculated from an x-ray mammogram by imaging a calibrated step-wedge alongside the breast and determining the compressed breast thickness. Previously published work used a step-wedge made of PTFE with a maximum height of 35mm, length 175mm and width 15mm. Although fulfilling all theoretical requirements, it can
Jennifer Diffey, Alan Hufton, Susan M. Astley   +2 more
openaire   +1 more source