Results 71 to 80 of about 9,328 (238)

Experimental and Numerical Study on the Performance of Steel–Coarse Aggregate Reactive Powder Concrete Composite Beams with Uplift-Restricted and Slip-Permitted Connectors under Negative Bending Moment

Buildings
An innovative form of steel–concrete composite beam, the steel–coarse aggregate reactive powder concrete (CA-RPC) composite beam with uplift-restricted and slip-permitted (URSP) connectors, is introduced in this paper.
Xuan-Yang Zhong, Liang-Dong Zhuang, Ran Ding, Mu-Xuan Tao   +3 more
doaj   +1 more source

Ensemble reliability and the signal‐to‐noise paradox in ECMWF subseasonal forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We derive a general expression for the ratio of predictable components (RPC) in terms of correlation, spread–error ratio, and total variance ratio. Physical constraints on the admissible solutions (i.e., real‐valued and non‐negative variances) provide a mechanism to identify statistically paradoxical sample combinations of reliability and correlation ...
Christopher D. Roberts, Frederic Vitart
wiley   +1 more source

Quantification of Microvascular Density of the Optic Nerve Head in Diabetic Retinopathy Using Optical Coherence Tomographic Angiography

Journal of Ophthalmology, 2020
Aims. To quantify the capillary density of the optic nerve head in healthy control eyes and different stages of diabetic retinopathy (DR) eyes and identify the parameters to detect eyes with or without DR using optical coherence tomographic angiography ...
Jianfeng Huang, Bodi Zheng, Yingyi Lu, Xiaoya Gu, Hong Dai, Tong Chen   +5 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Backstepping vector control strategy for MMC-RPC

机车电传动, 2022
In order to solve the power quality problems of negative sequence, reactive power and harmonics in the traditional traction network, in the modular multilevel converter structure of railway power conditioner (MMC-RPC), by introducing the backstepping ...
SONG Pinggang, LONG Riqi, YANG Changlan, LEI Wenqi, ZHENG Yazhi   +4 more
doaj  

Estimating the purebred-crossbred genetic correlation of body weight in broiler chickens with pedigree or genomic relationships

Genetics Selection Evolution, 2019
Background In pig and poultry breeding programs, the breeding goal is to improve crossbred (CB) performance, whereas selection in the purebred (PB) lines is often based on PB performance. Thus, response to selection may be suboptimal, because the genetic
Pascal Duenk, Mario P. L. Calus, Yvonne C. J. Wientjes, Vivian P. Breen, John M. Henshall, Rachel Hawken, Piter Bijma   +6 more
doaj   +1 more source

Finite Element Analysis of RPC-Filled Steel Tube Stub Columns

, 2011
Reactive Powder Concrete (RPC) is a kind of cement-based composite which has ultra-high strength, high ductility and durability. RPC has great fragility, bad ductility and bursting fragility destruction subjected to high or complicated stress.
Hua Luo, Zhi Gang Yan, Ming Zhe An
core   +1 more source

Quantitative Analysis of Size‐Dependent Structural Disorder in Ruthenium Nanoparticles by Crystal PDF Full‐Space Refinement

Small Methods, EarlyView.
A crystal PDF full‐space refinement approach integrates Bragg diffraction and total scattering to evaluate stacking faults and PDF degradation caused by point defects in ruthenium nanoparticles. This method unveils distinct size‐dependent stacking evolution in fcc‐ and hcp‐based systems, providing a unified and quantitative approach for nanoscale ...
Satoshi Hiroi, Hirotaka Ashitani, Okkyun Seo, Jaemyung Kim, Chulho Song, Loku Singgapulige Rosantha Kumara, Chen Yanna, Koji Ohara, Kohei Kusada, Hiroshi Kitagawa, Osami Sakata   +10 more
wiley   +1 more source

Pyrolysis of Rapeseed Oil Press Cake and Steam Gasification of Solid Residues

Energies, 2020
A deoiled rapeseed press cake (RPC) was pyrolyzed by heating at a slow heating rate to 1000 °C in a fixed bed reactor, and the produced char was then gasified to obtain data for the kinetic modeling of the process.
Lech Nowicki, Dorota Siuta, Maciej Markowski   +2 more
doaj   +1 more source

Stability Analysis and Improvement Mechanism of Grid‐Forming Converter Connected to a Low‐Impedance Grid

High Voltage, EarlyView.
ABSTRACT This paper investigates the stability and improvement mechanisms of a grid‐forming (GFM) converter connected to a low‐impedance grid. Initially, a state‐space model of the GFM converter integrated into an AC grid is developed for stability analysis.
Xiaotong Ji, Jinyu Wen, Yunhui Huang
wiley   +1 more source