Results 21 to 30 of about 17,311 (265)

Antarctic temperature and CO₂: near-synchrony yet variable phasing during the last deglaciation [PDF]

Climate of the Past, 2019
The last deglaciation, which occurred from 18 000 to 11 000 years ago, is the most recent large natural climatic variation of global extent.
J. Chowdhry Beeman, L. Gest, F. Parrenin, D. Raynaud, T. J. Fudge, C. Buizert, E. J. Brook   +6 more
doaj   +1 more source

Unintended consequences of the potential phase-out of gamma irradiation [version 1; referees: 2 approved]

F1000Research, 2018
The radioisotope cobalt-60 (Co-60) is important for commercial, medical, and agricultural applications. Its widespread use has meant that Co-60 can be found in less secured facilities, leading to the fear that unauthorized persons could obtain and use it
Jacquelyn W Chou, Michelle Skornicki, Joshua T Cohen   +2 more
doaj   +1 more source

Smart co-phasing system for segmented mirror telescopes [PDF]

SPIE Proceedings, 2016
Space observations of fainter and more distant astronomical objects constantly require telescope primary mirrors with a larger size. The diameter of monolithic primary mirrors is limited to 10 m because of manufacturing and logistics limitations. For space telescopes, monolithic primary mirrors are limited to less than 5 m due to fairing capacity ...
Simar, Juan Felipe, Stockman, Yvan, Surdej, Jean   +2 more
openaire   +2 more sources

Familial co-segregation and the emerging role of long-read sequencing to re-classify variants of uncertain significance in inherited retinal diseases

npj Genomic Medicine, 2023
Phasing genetic variants is essential in determining those that are potentially disease-causing. In autosomal recessive inherited retinal diseases (IRDs), reclassification of variants of uncertain significance (VUS) can provide a genetic diagnosis in ...
Pankhuri Gupta, Kenji Nakamichi, Alyssa C. Bonnell, Ryan Yanagihara, Nick Radulovich, Fuki M. Hisama, Jennifer R. Chao, Debarshi Mustafi   +7 more
doaj   +1 more source

Challenges in charge preparation and combustion in homogeneous charge compression ignition engines with biodiesel: A review

Energy Reports, 2019
Homogeneous charge compression ignition (HCCI) engines have high efficiency and lower NOx-soot emissions than diesel and gasoline engines. However, these engines suffer from high HC, CO and unregulated emissions and combustion phasing control.
V.D. Chaudhari, D. Deshmukh
doaj   +1 more source

Effective a posteriori co-phasing of interferometric fringe data [PDF]

SPIE Proceedings, 2016
We have recently shown that a posteriori co-phasing of multi-spectral interferograms was possible.1 In this contribution, we extend our approach so that it can be applied to actual data as provided by Amber 2 or Matisse instruments. The main advantage of the proposed post-processing technique is that it requires no modifications of the instruments and ...
Schutz, Antony, Thiébaut, Éric, Soulez, Ferréol, Tallon, Michel, Duvert, Gilles, Tallon-Bosc, Isabelle   +5 more
openaire   +2 more sources

Combustion noise characterization and optimization of PCCI combustion using response surface methodology

Journal of Mechanical Engineering and Sciences, 2023
The current work aims at characterizing the premixed charge compression ignition (PCCI) combustion with regression-based approach using response surface methodology.
Datta Bharadwaz Yellapragada, A. Swarna Kumari   +1 more
doaj   +1 more source

Integrated Wavefront Detection for Large-Aperture Segmented Planar Mirrors: Concept & Principle

Photonics
Planar mirrors play a crucial role in autocollimation testing and optical beam relay systems of telescopes and other fields. However, for the next-generation large-aperture telescopes, typical monolithic planar mirrors fall short in meeting anticipated ...
Rui Sun, Qichang An, Xiaoxia Wu
doaj   +1 more source

Experimental and Numerical Study of Jet Controlled Compression Ignition on Combustion Phasing Control in Diesel Premixed Compression Ignition Systems

Energies, 2014
In order to directly control the premixed combustion phasing, a Jet Controlled Compression Ignition (JCCI) for diesel premixed compression ignition systems is investigated.
Qiang Zhang, Wuqiang Long, Jiangping Tian, Yicong Wang, Xiangyu Meng   +4 more
doaj   +1 more source

Principles and Applications of Interferometry in Highly Segmented Mirrors Co-Phasing

Photonics
With advances in scientific foundations and engineering practice, segmented mirrors—a key architecture for realizing extremely large apertures and high-resolution imaging—have become foundational across space astronomy, ground-based telescopes, and ...
Shijun Song, Xinyue Liu, Tao Chen, Changhua Liu, Qichang An   +4 more
doaj   +1 more source