Kangquan Guo

Development of an Orchard Inspection Robot: A ROS-Based LiDAR-SLAM System with Hybrid A*-DWA Navigation

Jiwei Qu, Yan Gu, Kangquan Guo, Qingzhen Zhu

The application of orchard inspection robots has become increasingly widespread. How-ever, achieving autonomous navigation in unstructured environments continues to pre-sent significant challenges. This study investigates the Simultaneous Localization and Mapping (SLAM) navigation system of an orchard inspection robot and evaluates its performance …

cn (code pays fourni par la source)

Map Construction and Positioning Method for LiDAR SLAM-Based Navigation of an Agricultural Field Inspection Robot

Jiwei Qu, Lanyu Li, Kangquan Guo, D. M. Li

In agricultural field inspection robots, constructing accurate environmental maps and achieving precise localization are essential for effective Light Detection And Ranging (LiDAR) Simultaneous Localization And Mapping (SLAM) navigation. However, navigating in occluded environments, such as mapping distortion and substantial cumulative errors, presents …

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Applications of Autonomous Navigation Technologies for Unmanned Agricultural Tractors: A Review

Jiwei Qu, Zhe Zhang, Zheyu Qin, Kangquan Guo et autres

The development of unmanned agricultural tractors (UAT) represents a significant step towards intelligent agricultural equipment. UAT technology is expected to lighten the workload of laborers and enhance the accuracy and efficiency of mechanized operations. Through the investigation of 123 relevant studies in …

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Applications of Key Autonomous Navigation Technologies for Unmanned Agricultural Tractors: A Review

Jiwei Qu, Zhe Zhang, Zheyu Qin, Kangquan Guo et autres

Unmanned agricultural tractor (UAT) represents the advanced stage of autonomous navigation and serves as a core technology in agricultural production. It reduces the operator’s workload, and improves operational accuracy and efficiency. This article reviews three aspects of key autonomous navigation technologies for …

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Effects of coupling agents on the properties of cotton stalk–polypropylene film boards

Nan Xia, Fei Li, Kunfeng Liu, Ying Shao et autres

Effects of treating cotton stalks with a coupling agent (maleic anhydride polypropylene (MAPP), polymeric methylene diphenyl diisocyanate (PMDI), or vinyltrimethoxysilane (A171)) were investigated relative to the mechanical and water resistance properties of cotton stalk–polypropylene film boards. The interfacial morphology was investigated by …

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Application of gas phase surface discharge plasma with a spray reactor for Zygosaccharomyces rouxii LB inactivation in apple juice

Ying Wang, Zirong Wang, Yahong Yuan, Zhenpeng Gao et autres

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Inactivation of yeast in apple juice using gas-phase surface discharge plasma treatment with a spray reactor

Ying Wang, Tiecheng Wang, Yahong Yuan, Yujie Fan et autres

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Bonding performance and mechanism of thermal-hydro-mechanical modified veneer

Hongling Liu, Jin Shang, Frederick A. Kamke, Kangquan Guo

us, cn (code pays fourni par la source)

Dry Bond Strength and Water Resistance of Konjac Glucomannan, Chitosan, and Polyvinyl Alcohol Blend Adhesive

Xianqing Chen, Nan Xia, Kangquan Guo, Chusheng Qi

An environmentally-friendly wood adhesive was developed by blending konjac glucomannan (KGM), chitosan (CH), and polyvinyl alcohol (PVA) together. The viscosity of the KGM-CH-PVA (KCP) blend adhesive was determined, and the morphology of the film was observed using scanning electron microscopy (SEM). The …

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Physical, mechanical properties, and structural characterization of konjac glucomannan-chitosan-polypeptide adhesive blends

Jin Shang, Hongling Liu, Chusheng Qi, Xianqing Chen et autres

Polypeptide was used to improve the water resistance of konjac glucomannan (KGM)-chitosan-based wood adhesives. With identical solid content, the tensile strength in wet state was increased by the addition of polypeptide and a maximum tensile strength of 2.34 MPa was reached. To …

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Preparation and properties of oriented sorghum-thermoplastic composites using flat hot-pressing technology

Chusheng Qi, Vikram Yadama, Kangquan Guo, Michael P. Wolcott

In order to increase the value of sorghum for bioethanol products, a new method of fabricating oriented sorghum fiber and high-density polyethylene composites (OFPC) using flat hot-pressing technology is presented in this study. The effect of high-density polyethylene (HDPE) loading (0, 10, …

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Evaluation of curing and thermal behaviors of konjac glucomannan–chitosan–polypeptide adhesive blends

Jin Shang, Hongling Liu, Chusheng Qi, Kangquan Guo et autres

ABSTRACT An environmentally friendly wood adhesive has been achieved through novel blending of konjac glucomannan and chitosan with polypeptide. Tensile tests reveal an optimal curing temperature of 130°C. Both viscoelastic properties of the adhesive blends during curing process, and the structural variation …

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