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Article
Adaptive PI Control Based Stability Margin Configuration of Aircraft Control Systems with Unknown System Parameters and Time Delay
The stability margin is a vital indicator for assessing the safety level of aircraft control systems. It should maintain sufficient stability margin to ensure safety during flight, especially in the process of...
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Vibration characteristics investigation of a dual rotor-bearing outer ring–pedestal-casing system with clearance fit
Due to thermal expansion of the mechanical structure, assembly processes, bearing wear, and long-term vibration during operation, a clearance fit may occur between the bearing outer ring and its pedestal. The ...
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Hydrocarbon Source and Relationship between Hydrocarbon Charging Process and Reservoir Tight Period of the Denglouku Formation Tight Sandstone Gas Reservoirs in the Xujiaweizi Fault Depression, Songliao Basin
The exploration level of tight sandstone gas reservoirs in the Denglouku Formation (DF) in the Xujiaweizi Fault Depression is low, and hydrocarbon source and accumulation process remain unclear. Through the an...
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Research on water level measurement technology based on the residual length ratio of image characters
Aiming at the low efficiency and poor adaptability of traditional water level measurement methods, a water level measurement technology based on the residual length ratio of image characters is proposed in thi...
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Stabilization and Blow-up in an Infinite Memory Wave Equation with Logarithmic Nonlinearity and Acoustic Boundary Conditions
In this paper, the authors consider the stabilization and blow up of the wave equation with infinite memory, logarithmic nonlinearity and acoustic boundary conditions. The authors discuss the existence of glob...
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Comprehensive Insights into the Health Effects of Selenium Exposure and Supplementation Among the Chinese Community Middle-Aged and Elderly: a Combined Retrospective Cohort Study and Intervention Study
Selenium (Se) is an essential trace element for maintaining human health, for example, plays a crucial role in preventing aging-related diseases. However, most studies on the health effects of Se among the com...
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Propagation Characteristics of Stress Waves and Failure Modes of Gray Sandstone with a Gypsum-Filled Joint Under Impact Load
To investigate the effects of the impact velocity and joint dip angle on stress wave propagation and fracture evolution of rock masses, dynamic impact experiments of the gray sandstone samples with gypsum-fill...
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Storm Liquefaction Deposits: A Possibility of Time Reversal in Sedimentary Strata of an Estuarial Coastal Area
In the sedimentary strata dating of estuarial coastal areas, it is often found that there is phenomenon of time-reversal in strata. The seabed sediments could be liquefied under storm waves. A laboratory wave ...
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Experimental study of nonlinear resonance gallo** mechanism of transmission lines drived by non-contact electromagnetic excitation
Conducting comprehensive study on the gallo** mechanism and vibration control of transmission lines is a challenge due to the uncontrollable outdoor weather and the intricate character of natural wind excita...
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Open AccessCompressive sensing-based construction of high-resolution mode shapes for updating bridge boundary constraints
In this study, a method of finite element model updating is proposed to quantitatively identify bridge boundary constraints using the high-resolution mode shapes of a bridge. The high-resolution mode shapes ar...
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Distributed algorithm for solving variational inequalities over time-varying unbalanced digraphs
In this paper, we study a distributed model to cooperatively compute variational inequalities over time-varying directed graphs. Here, each agent has access to a part of the full map** and holds a local view...
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Metabolic engineering of Saccharomyces cerevisiae for high-level production of (+)-ambrein from glucose
(+)-Ambrein is the primary component of ambergris, a rare product found in sperm whales (Physeter microcephalus). Microbial production using sustainable resources is a promising way to replace animal extraction a...
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Open AccessLiDAR Data Fusion to Improve Forest Attribute Estimates: A Review
Many LiDAR remote sensing studies over the past decade promised data fusion as a potential avenue to increase accuracy, spatial-temporal resolution, and information extraction in the final data products. Here,...
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Enhanced Shear Strength of Sn-Bi/(111)Cu Joints by Refined Distribution of Bi in the Composite Solder
In recent years, Sn-Bi solder has been widely used in the electronic packaging industry due to its low melting point. However, the segregation and coarsening of Bi will degrade the mechanical properties of sol...
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Daidzein Relieves Lipopolysaccharide-Induced Mastitis Through Inhibiting MAPKs and AKT/NF-κB P65 Signaling Pathways
Mastitis in dairy cattle is a serious pathological process that causes significant economic losses to the farming industry. Daidzein is a dietary isoflavone, which exists in legumes and has been reported to ha...
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Reinforcement learning-based optimized multi-agent finite-time optimal synchronisation control and its application to the harmonic oscillator
This paper investigates the finite-time optimal synchronisation problem for leader-follower multi-agent systems and its application to the harmonic oscillator models. Neural networks are introduced to fit the ...
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N-doped NiS2 nanosheets array on carbon fiber as an efficient hydrogen evolution reaction electrocatalyst
Electrocatalytic hydrogen production holds great promise as a means of generating green energy. In order to achieve the large-scale industrial application, low-cost and highly efficient electrocatalysts are th...
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Open AccessIdentification and characterization of the RcTCP gene family and its expression in response to abiotic stresses in castor bean
The TCP (teosinte branched1/cincinnata/proliferating cell factor) family plays a prominent role in plant development and stress responses. However, TCP family genes have thus far not been identified in castor bea...
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Electrochemical Detection of Pb(II) Ions in Aqueous Solution by Carbon Nanospheres Modified Boron-Doped Diamond Electrode
In this paper, a sensor using carbon nanospheres modified boron-doped diamond (CNs/BDD) electrode for detecting heavy metal ions rapidly in aqueous solution is studied. The CNs/BDD electrode is characterized s...
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Effects of Konjac Glucomannan with Different Molecular Weights on Functional and Structural Properties of κ-carrageenan Composite Gel
In this study, the properties of konjac glucomannan with different molecular weights and their effects on the functional and structural properties of κ-carrageenan (κ-CA) composite gel were analyzed. Native ko...
