66 Result(s)
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Article
Exploring Antarctic subglacial lakes with RECoverable Autonomous Sonde (RECAS): Design and first field tests
Conducting scientific drilling on subglacial lakes and obtaining samples of subglacial lake water holds great significance in unraveling the formation and evolution of Antarctic subglacial lakes and early Eart...
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Article
Open AccessFlexible wide-range multidimensional force sensors inspired by bones embedded in muscle
Flexible sensors have been widely studied for use in motion monitoring, human‒machine interactions (HMIs), personalized medicine, and soft intelligent robots. However, their practical application is limited by...
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Article
A Review of Mechanical Properties and Improvement Methods of Medium Entropy Alloys at High Temperature
Medium-entropy alloys (MEA) have excellent mechanical properties and are extremely suitable for applications such as aerospace. However, almost all high- and medium-entropy alloys decrease in strength and duct...
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Article
Soft-rigid coupling grippers: Collaboration strategies and integrated fabrication methods
Continuously increasing applications of robot technologies in unstructured environments put higher requirements on the robotic grippers’ performance, such as interaction capability, output force range, and con...
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Article
Beneficial Utilization of Electromagnetic Stirring Technology in Al-Ce Alloys
The content of Ce plays an important role in balancing the strength and plasticity of Al-Ce alloys, because it seriously affects the morphology and distribution of Ce-rich phase. Electromagnetic stirring (EMS)...
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Article
Multivariate Prediction Framework of Ocean Sensing Data Assisting Red Tide Early warning
In red tide early waring, multivariate ocean sensing data prediction has been the current technical mainstream. This prediction pattern can effectively capture the impact information of nonpredictive ocean env...
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Article
Pneumatic and tendon actuation coupled muti-mode actuators for soft robots with broad force and speed range
Broad output force and speed ranges are highly desired for actuators to endow soft robots with high performance, thereby increasing the range of tasks they can accomplish. However, limited by their low structu...
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Article
Recovering unknown topology in a two-layer multiplex network: One layer infers the other layer
There have been increasing interests in studying multiplex dynamical networks recently. This paper focuses on topology identification of two-layer multiplex networks with peer-to-peer interlayer couplings. For...
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Article
Open AccessSatellite integrity monitoring for satellite-based augmentation system: an improved covariance-based method
Satellite integrity monitoring is vital to satellite-based augmentation systems, and can provide the confidence of the differential corrections for each monitored satellite satisfying the stringent safety-of-l...
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Article
Performance of Permeable Crystalline Self-Healing Agent Onmicro-Cracks of Oil Well Cement
The cement ring of the oil well will produce micro-cracks, which will cause channeling in the annulus, affecting actual production. Therefore, self-healing cement has great value in oil well applications. In t...
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Article
Preparation and Properties of Low-Temperature Early Strength Material for Nano-C-S-H Gel Seed
To solve the problem that the low temperature leads to the slow development of cement strength in deepwater cementing, we prepared low-temperature early strength material of nano-C-S-H gel seed with sodium sil...
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Article
Propagation and Attenuation of Blast Vibration Waves in Closely Spaced Tunnels: A Case Study
The closely spaced tunnels structure has been widely used in traffic tunnels, hydropower stations, collieries and underground metal mines. Blasting has important implications for the construction of these clos...
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Article
Open AccessA variant of raw observation approach for BDS/GNSS precise point positioning with fast integer ambiguity resolution
The Precise Point Positioning (PPP) technique uses a single Global Navigation Satellite System (GNSS) receiver to collect carrier-phase and code observations and perform centimeter-accuracy positioning togethe...
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Article
Improving Strength and Toughness of Oil Well Cement with Modified Basalt Fiber
Due to the influence of complex downhole conditions and inherent brittleness of cement, cement is easily broken, resulting in interlayer sealing failure. To solve this problem, basalt fiber is used to enhance ...
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Article
Investigating Neural Activation Effects on Deep Belief Echo-State Networks for Prediction Toward Smart Ocean Environment Monitoring
Ocean sensor data prediction has become a promising means for smart ocean monitoring. In alternative solutions, deep neural networks (DNNs) are considered as a good choice. The determination of activation func...
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Precipitation Behavior of Carbide and its Effect on the Mechanical Properties of a Novel Fe60Co10Cr10Ni10Mo5V5 Medium-Entropy Alloy
Carbide precipitates are effective for improving the strength and stability of high-entropy alloys. In this work, novel-designed Fe60Co10Cr10Ni10Mo5V5 medium-entropy alloys (MEAs) containing 1 wt.% carbon were pr...
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Article
Altering membrane structure to enhance water permeability and performance of anion exchange membrane fuel cell
Water management has been proven significant for enhancing both performance and durability of anion exchange membrane fuel cell. Besides searching new material, decreasing membrane thickness and modifying oper...
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Article
An improved empirical wavelet transform method for rolling bearing fault diagnosis
Empirical wavelet transform (EWT) based on the scale space method has been widely used in rolling bearing fault diagnosis. However, using the scale space method to divide the frequency band, the redundant comp...
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Article
Effect of Trace Silver on Precipitation Behavior of Strengthening Phases and Mechanical Properties of Aluminum-Copper Alloys
The effects of trace silver (Ag) on the precipitation behavior of strengthening phases and the mechanical properties of Al-Cu alloys have been investigated by performance testing, scanning electron microscopy,...
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Article
Open AccessInversion of surface vegetation water content based on GNSS-IR and MODIS data fusion
Obtaining high-precision, long-term sequences of vegetation water content (VWC) is of great significance for assessing surface vegetation growth, soil moisture, and fire risk. In recent years, the global navig...
