Results 21 to 30 of about 699,706 (120)

Experimental Study on Methane Hydrate Dissociation by Depressurization in Porous Sediments

open access: yesEnergies, 2012
Based on currently available data from site measurements in the Shenhu Area of the South China Sea, methane hydrate dissociation behavior by depressurization is studied in a one-dimensional experimental apparatus.
Lijun Xiong   +3 more
doaj   +1 more source

Iterative Learning Consensus Tracking for Multi-Agent Systems With Output Constraints and Data Losses

open access: yesIEEE Access, 2021
In this paper, the consensus tracking problem for nonlinear multi-agent systems subjected to the output constraint, data loss and switching topologies is considered.
Zhengzheng Yu   +3 more
doaj   +1 more source

Numerical Simulation Of The Treatment Of Soil Swelling Using Grid Geocell Columns

open access: yesSlovak Journal of Civil Engineering, 2015
In this paper, a method for the treatment of the swelling of expansive soil is numerically simulated. The method is simply based on the embedment of a geogrid (or a geomesh) in the soil.
Fattah Mohammed Y.   +2 more
doaj   +1 more source

Evaluation of Acute Exogenous Hypoxia Impact on the Fraction of Exhaled Nitric Oxide in Healthy Males

open access: yesFolia Medica, 2015
Introduction: Exogenous hypoxia increases ventilation and contracts the pulmonary vessels. Whether those factors change the values of nitric oxide in exhaled air has not yet been evaluated. Objective: To examine the effect of exogenous normobaric hypoxia
Dimov Peter K.   +4 more
doaj   +1 more source

Robust Adaptive Tracking Control of the Underwater Robot with Input Nonlinearity Using Neural Networks [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2010
In this paper, robust adaptive tracking control is proposed for the underwater robot in the presence of parametric uncertainties and unknown external disturbances.
Mou Chen, Bin Jiang, Jie Zou, Xing Feng
doaj   +1 more source

Use of Indices in RGB and Random Forest Regression to Measure the Leaf Area Index in Maize

open access: yesAgronomy
In the cultivation of maize, the leaf area index (LAI) serves as an important metric to determine the development of the plant. Unmanned aerial vehicles (UAVs) that capture RGB images, along with random forest regression (RFR), can be used to indirectly ...
Leonardo Pinto de Magalhães   +1 more
doaj   +1 more source

Entropy Driven Phase Transition in Polymer Gels: Mean Field Theory

open access: yesEntropy, 2018
We present a mean field model of a gel consisting of P polymers, each of length L and Nz polyfunctional monomers. Each polyfunctional monomer forms z covalent bonds with the 2P bifunctional monomers at the ends of the linear polymers.
Miron Kaufman
doaj   +1 more source

Analyzing the Saturation of Growing Stem Volume Based on ZY-3 Stereo and Multispectral Images in Planted Coniferous Forest

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Recently, remote sensing (RS) technology are becoming an increasingly important technology in estimating forest growing stem volume (GSV), and the saturation issue of spectral variables from various optical sensors severely hinders the improvement of ...
Tingchen Zhang   +4 more
doaj   +1 more source

Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes

open access: yesLife, 2021
One-third of all mosquitoes belong to the Aedini, a tribe comprising common vectors of viral zoonoses such as Aedes aegypti and Aedes albopictus.
Nicola Zadra   +2 more
doaj   +1 more source

The Influencing Factors and Calculation Methods of Rock Electrical Parameters of Carbonate Reservoirs

open access: yesCejing jishu
The pore structure of carbonate reservoir is much more complex than that of clastic reservoir, and its rock electrical parameters m and n vary widely, which is difficult to obtain accurately, and the fixed rock electrical parameters are used to calculate
WU Guohai   +7 more
doaj   +1 more source

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