Results 41 to 50 of about 3,047 (185)

Design of a New Acoustic Logging While Drilling Tool

Sensors, 2021
To obtain qualified logging while drilling (LWD) data, a new acoustic LWD tool was designed. Its overall design is introduced here, including the physical construction, electronic structure, and operation flowchart.
Kai Zhang, Baohai Tan, Wenxiu Zhang, Yuntao Sun, Jian Zheng, Yuanda Su, Xutang Liu, Gaofu Wu, Shoutao Xin   +8 more
doaj   +1 more source

Towards improving Arctic mixed‐phase cloud representation in the ECMWF model using MOSAiC observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Abstract The presence of Arctic clouds plays a crucial role in the evolution of the surface temperature of Arctic sea ice. However, large biases in cloud representation remain in state‐of‐the‐art weather and climate models. In this study, we use observational data from the one‐year Arctic ship campaign Multi‐disciplinary drifting Observatory for the ...
Luise Schulte, Richard Forbes, Linus Magnusson, Vera Schemann, Jonathan Day, Susanne Crewell   +5 more
wiley   +1 more source

Quantification of lung water in heart failure using cardiovascular magnetic resonance imaging

Journal of Cardiovascular Magnetic Resonance, 2019
Background Pulmonary edema is a cardinal feature of heart failure but no quantitative tests are available in clinical practice. The goals of this study were to develop a simple cardiovascular magnetic resonance (CMR) approach for lung water ...
Richard B. Thompson, Kelvin Chow, Joseph J. Pagano, Viktor Sekowski, Evangelos D. Michelakis, Wayne Tymchak, Mark J. Haykowsky, Justin A. Ezekowitz, Gavin Y. Oudit, Jason R. B. Dyck, Padma Kaul, Anamaria Savu, D. Ian Paterson   +12 more
doaj   +1 more source

Use of in situ Tests for Determination of Soil Support Capacity [PDF]

Anuário do Instituto de Geociências, 2018
The Standard Penetration Test (SPT) is used worldwide for information on the resistance to dynamic penetration of the soil (N). Correlations, allow calculating, using this index, soil parameters such as the relative compactness, friction angle, elastic ...
Stephanny Conceição Farias do Egito Costa, Adriano Elísio de Figueiredo Lopes Lucena, Talita Miranda de Sousa, Gutemberg Gonçalves da Silva   +3 more
doaj   +1 more source

Two‐step annealing process drives high thermoelectric performance of n‐type Bi2Te3 flexible films

Responsive Materials, EarlyView.
To address the relatively low carrier mobility in n‐type Bi2Te3 films prepared by magnetron sputtering, we developed a two‐step annealing process, including in situ and post‐annealing heat treatment. This method yields a high mobility (132.54 cm2 V−1 s−1) and S2σ (14.5 μW cm−1 K−2) by promoting pronounced grain growth and strengthening the preferred ...
Liang‐Cao Yin, Xinhua Lu, Wei‐Di Liu, Ji‐Wei Hou, De‐Zhuang Wang, Siqi Liu, Hao Wu, Meng Li, Xiao‐Lei Shi, Wei‐Nan Xie, Zhi‐Gang Chen, Qingfeng Liu   +11 more
wiley   +1 more source

Spatial variability of leaf wetness duration in cotton, coffee and banana crop canopies Variabilidade espacial da duração do período de molhamento foliar nas culturas do algodão, do café e da banana

Scientia Agricola, 2008
Despite the importance of leaf wetness duration for plant disease epidemiology, there has been little attention paid to research on how its variability relates to different cropping situations.
Eduardo Alvarez Santos, Paulo Cesar Sentelhas, José Eduardo Macedo Pezzopane, Luiz Roberto Angelocci, José Eduardo Boffino Almeida Monteiro   +4 more
doaj   +1 more source

LWD-3D: Lightweight Detector Based on Self-Attention for 3D Object Detection

CAAI Artificial Intelligence Research, 2022
Lightweight modules play a key role in 3D object detection tasks for autonomous driving, which are necessary for the application of 3D object detectors.
Shuo Yang, Huimin Lu, Tohru Kamiya, Yoshihisa Nakatoh, Seiichi Serikawa   +4 more
doaj   +1 more source

Development and Improvement of Habitat Suitability Criteria for Instream Habitat Assessments Conducted in Support of Environmental Flows in Florida

River Research and Applications, EarlyView.
ABSTRACT Florida's regulatory framework requires the establishment of minimum flows to protect aquatic ecosystems and water resources from significant harm. One of the primary methods used to evaluate significant harm is assessment of instream habitat, which relies on Habitat Suitability Criteria (HSC) curves that relate flow regimes and habitat ...
Eric J. Nagid, Kym Rouse Holzwart
wiley   +1 more source

A theoretical analysis of the logging-while-drilling dipole acoustic reflection measurement

Frontiers in Earth Science
Post-drilling wireline acoustic single-well imaging technology can now detect geological structures tens of meters away from boreholes. Further development of this single-well imaging technology in the logging-while-drilling (LWD) environment will have ...
Yanghu Li, Yanghu Li, Zhenlin Wang, Zhenlin Wang, Yuanda Su, Xiaoming Tang   +5 more
doaj   +1 more source

Quantification of potential recruitment of large woody debris in mountain catchments considering the effects of vegetation on hydraulic and geotechnical bank erosion and shallow landslides

E3S Web of Conferences, 2018
Large woody debris (LWD) exacerbates flood damages near civil structures and in urbanized areas and the awareness of LWD as a risk is becoming more and more relevant. The recruitment of “fresh” large woody debris has been documented to play a significant
Gasser Eric, Simon Andrew, Perona Paolo, Dorren Luuk, Hübl Johannes, Schwarz Massimiliano   +5 more
doaj   +1 more source