Results 161 to 170 of about 441,091 (198)

The Use of Ethers as Effective Ligands for the Extraction of Metal Ions by Ion Exchange

IOP Conference Series: Earth and Environment
A quantum chemical calculation of complexation energies of a series of substituted aza-18-crown-6-ethers with Li+ – Na+ – K+ ions has been carried out and influence of the substituent in the ether molecule on the strength of the “complexing agent ...
Inna Zaitseva, O. Pylypenko, Tetyana Panayotova, Tetyana Dmytrenko, Kateryna Sorokina   +4 more
semanticscholar   +1 more source

Revisiting the Mass Radius of the Proton in Light of Controverted Equation

International Journal of Advanced Multidisciplinary Research and Studies
The root mean square mass radii of the proton are produced by means of the extraction of the effective mass from different kinds of photoproduction and, strangely, center of mass energy without overt exploration of the equation (〈R_m^2 〉=12⁄(m_s^2 ...
Ikechukwu Iloh Udema
semanticscholar   +1 more source

Chest X-ray image classification using deep belief network with Al-Biruni earth radius and particle swarm optimization

IAES International Journal of Artificial Intelligence (IJ-AI)
Chest X-ray (CXR) is a widely employed radiological clinical assessment tool that provides a quick and effective means of classifying various diseases using CXR images.
Rakesh Selva Raj, Pavan Kumar Madalu Palakshamurthy, Bidarakere Eswarappa Rangaswamy   +2 more
semanticscholar   +1 more source

TCM splints versus internal fixation for distal radius fractures: A systematic review and meta-analysis of randomized controlled trials

Medicine
Background: The optimal treatment of distal radius fractures (DRFs) remains unclear. This study aimed to compare the clinical outcomes of traditional Chinese medicine (TCM) splints and internal fixation in the treatment of DRFs.
Wantao Xiong, Xin Cui, Junchen Li, Chenqi Guo, Yi Yan, Yongyao Li   +5 more
semanticscholar   +1 more source

Simultaneous influence of nanoPSS and photonic crystal on light extraction in AlGaN 304nm UVB LEDs

Scientific Reports
The external-quantum efficiency (EQE) of AlGaN-based ultraviolet-B light-emitting diodes (UVB LEDs) has achieved a world record value of 9.6% on wafers but suffers from a low light extraction efficiency (LEE) of  89%).
M. A. Khan, Eriko Matsuura, Y. Kashima, H. Hirayama   +3 more
semanticscholar   +1 more source

Comparative Analysis of the Gas Extraction Effects With Different Numbers and Spacings of Boreholes Drilled Along a Coal Seam

Energy Science & Engineering
The number and spacing of boreholes drilled along a coal seam are important parameters of the borehole layout. Despite the previous extensive research by many experts, quantitative and visual comparisons of the gas extraction effects with different ...
Yuexia Chen, Tingxiang Chu, Xuexi Chen, Peng Chen, Haidong Wang, Boning Jiang, Jialin Cao   +6 more
semanticscholar   +1 more source

Research on “Extraction–Injection–Locking” Collaborative Prevention and Control Technology for Coal Mine Gas Disasters

Processes
In response to the issues of low synergy efficiency between gas extraction and water injection, unclear procedural connections, and high costs in coal mine gas disaster prevention, this paper proposes a collaborative prevention technology for coal mine ...
Ting Lu, Xuefeng Zhang, Gang Liu
semanticscholar   +1 more source

Effective range expansion with the left-hand cut and its application to the $T_{cc}(3875)$

IFIP/ACM Working Conference on Component Deployment
The validity range of the widely used traditional effective range expansion can be severely limited by the presence of a left-hand cut near the two-particle threshold.
Meng-Lin Du, Feng-Kun Guo, Bing Wu
semanticscholar   +1 more source

Effective extraction radius of gas drilling in coal seam

, 2021
Zou Shichao, Xin Song
semanticscholar   +1 more source

Modeling and Extraction of the Specific Contact Resistance of GaN p-i-n Diodes up to 40 GHz

IEEE Transactions on Electron Devices
In this article, we propose a high-frequency model taking into account the series resistance of pseudo-vertical gallium nitride (GaN)-based p-i-n diodes.
K. Nadaud, Zihao Lyu, Daniel Alquier, Quentin Paoli, Julien Ladroue, A. Yvon, É. Frayssinet, Y. Cordier, Jérôme Billoué   +8 more
semanticscholar   +1 more source