Results 31 to 40 of about 27,302 (254)

Compact and Broadband Edge Coupler Based on Multi-Stage Silicon Nitride Tapers

IEEE Photonics Journal, 2020
We have proposed and experimentally realized an ultra-compact and broadband silicon nitride edge-coupler that enables high coupling efficiency. The proposed coupler was realized by concatenating short tapers in four stages, whose angles were designed to ...
Bishal Bhandari, Chul-Soon Im, Kyeong-Pyo Lee, Sung-Moon Kim, Min-Cheol Oh, Sang-Shin Lee   +5 more
doaj   +1 more source

Outside-In Anterior Cruciate Ligament Revision With Lateral Tenodesis and High-Strength Suture Augmentation Is Easy to Perform With the Iliotibial Band

Arthroscopy Techniques, 2021
We describe a technique for revision anterior cruciate ligament (ACL) surgery using a 15-cm strip of the iliotibial band as a graft and the gracilis tendon if available. An internal brace is added to augment the graft.
Vincent Marot, M.D., Arnault Valette, M.D., Louis Courtot, M.D., Thibault Lucena, M.D., Nicolas Reina, M.D., Ph.D., Etienne Cavaignac, M.D., Ph.D.   +5 more
doaj   +1 more source

Sensitivity Analysis of Acoustic Emission Detection Using Fiber Bragg Gratings with Different Optical Fiber Diameters

Sensors, 2020
Acoustic Emission (AE) detection and, in particular, ultrasound detection are excellent tools for structural health monitoring or medical diagnosis.
Georgios Violakis, Tri Le-Quang, Sergey A. Shevchik, Kilian Wasmer   +3 more
doaj   +1 more source

Spudcan Reinstallation Close to Natural Footprints Considering Strength Reduction: Insights from Single-Factor and Orthogonal Experiments

Applied Sciences
In offshore jack-up operations, it is common to reinstall spudcans close to existing footprints, which could result in asymmetric soil distribution and potential instability risks. This study investigates the mechanical behavior and stability of spudcans
Xin Zou, Jingang Jiao, Guoxian Xu, Linjian Cui, Xinkai Gao, Xinyi Lin, Guoqing Cai   +6 more
doaj   +1 more source

The impact of geolocation uncertainty on GEDI tropical forest canopy height estimation and change monitoring

Science of Remote Sensing, 2021
The Global Ecosystem Dynamics Investigation (GEDI) LiDAR provides new spaceborne vegetation canopy structural information including relative canopy height products defined with respect to 25 m diameter footprints. The GEDI geolocation requirement is that
David P. Roy, Herve B. Kashongwe, John Armston   +2 more
doaj   +1 more source

The Effect of Surface Waves on Airborne Lidar Bathymetry (ALB) Measurement Uncertainties

Remote Sensing, 2018
Airborne Lidar Bathymetry (ALB) provides a rapid means of data collection that provides seamless digital elevation maps across land and water. However, environmental factors such as water surface induce significant uncertainty in the ALB measurements. In
Matthew Birkebak, Firat Eren, Shachak Pe’eri, Neil Weston   +3 more
doaj   +1 more source

Cabin noise source ranking based on A320 flight test data in 'Aeroacoustics research in Europe: The CEAS-ASC report on 2012 highlights'

, 2013
The Council of European Aerospace Societies (CEAS) Aeroacoustics Specialists Committee (ASC) supports and promotes the interests of the scientific and industrial aeroacoustics community on an European scale and European aeronautics activities ...
Olsman, W.F.J., Spehr, Carsten, Hu, Nan, Herr, Michaela, Haxter, Stefan, Buchholz, Heino   +5 more
core   +1 more source

Critical Review on Efficiency of Ground Heat Exchangers in Heat Pump Systems

Clean Technologies, 2020
Use of ground source heat pumps has increased significantly in recent years for space heating and cooling of residential houses and commercial buildings, in both heating (i.e., cold region) and cooling (i.e., warm region) dominated climates, due to its ...
Adel Eswiasi, Phalguni Mukhopadhyaya
doaj   +1 more source

Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum

Environment International
Plastic fragments are widely found in the soil profile of terrestrial ecosystems, forming plastic footprint and posing increasing threat to soil functionality and carbon (C) footprint.
Meng-Ying Li, Wei Wang, Yue Ma, Yinglong Chen, Hong-Yan Tao, Ze-Ying Zhao, Peng-Yang Wang, Li Zhu, Baoluo Ma, Yun-Li Xiao, Shi-Sheng Li, Muhammad Ashraf, Wen-Ying Wang, Xiao-Bin Xiong, Ying Zhu, Jin-Lin Zhang, Momena Irum, Ya-Jie Song, Levis Kavagi, You-Cai Xiong   +19 more
doaj   +1 more source

Development of NaY zeolite derived from biomass and environmental assessment of carbon dioxide reduction

MATEC Web of Conferences, 2016
Carbon dioxide is one of greenhouse gases. The carbon dioxide caused by the industry activities and impact to the global warming. The objectives of this research were to synthesize NaY zeolite from bagasse ash as silica source and loaded with different ...
Worathanakul Patcharin, Tobarameekul Patchaya   +1 more
doaj   +1 more source