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Sunhwa Park, Hyeonhee Choi, Deok-Hyun Kim and Hyun-Koo Kim
In this work, a method of simultaneously analyzing pesticide concentration and assessing its risks was developed. Assessments were conducted to evaluate the distribution characteristics and risks to human health of pesticides in shallow groundwater in ag...
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Liansheng Tang, Yang Chen, Jialun Peng and Zihua Cheng
High liquid limit soil has unfavorable engineering geological characteristics, such as strong disintegration, dry shrinkage and easy cracking, and easy uplift when encountering water, which will cause various problems to the engineering. At present, the ...
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Roxana Zaharia, Elena Trotu?, Georgeta Tra?ca, Emil Georgescu, Agripina ?apcaliu, Viorel Fatu, Cristina Petri?or and Carmen Mincea
This paper presents studies performed for the monitoring of imidacloprid, clothianidin and thiamethoxam residues applied as seed treatment in rapeseed (Brassica napus ssp. oleifera), maize (Zea mays) and sunflower crops (Helianthus annuus). The experimen...
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Brendan C. O?Kelly, Jacinto Alonso-Azcárate and José Manuel Moreno-Maroto
The remolding toughness property of fine-grained soil has not been investigated that much, mainly because it has not lent easily to direct measurement, with soil toughness usually qualitatively described. In practical terms, as the plastic limit wP is ap...
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Daniel Zuluaga-Astudillo, Juan Carlos Ruge, Javier Camacho-Tauta, Oscar Reyes-Ortiz and Bernardo Caicedo-Hormaza
Diatoms are microscopic algae with a skeleton called a frustule, formed chiefly of silica, and are found in almost all aquatic environments and climatic conditions. Diatomaceous soils (DSs) originate from frustule sedimentation. In civil works (design an...
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Yanfang Liu, Guocui Wang, Xianna Zhang, Hongchen Li, Bingcheng Si, Wenqian Liu and Zhenhua Zhang
The indefinite characteristics of gas?liquid two-phase flow limit the usage of aerated drip irrigation. Gas?liquid two-phase flow in a labyrinth channel was observed using a particle tracking velocimetry (PTV) technique in this study. The motion trajecto...
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Xianghui Kong, Gaoqiang Wang, Yunpeng Liang, Zhibin Zhang and Shuai Cui
To improve the engineering performance of high-liquid-limit soil, lignin, a by-product of the papermaking industry, was used. First, the influence of lignin content and curing age on the physicochemical and mechanical properties of the improved soil was ...
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Yu-Zhang Bi, Jia-Ming Wen, Hao-Liang Wu and Yan-Jun Du
In this paper, the performance of a gas barrier that consisted of polyacrylamide (PAM)-modified compacted clayey soil was experimentally explored. The moisture content and water loss characteristics of the tested soils were adopted as indicative indices ...
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Shanshan Hou, Yugui Yang, Yong Chen, Dawei Lei and Chengzheng Cai
The existence of fracture flow has an undesirable effect on the creation of the frozen wall. Brine and liquid nitrogen combined freezing technology can ensure the safety of freezing engineering, reduce the construction period and save cost. Considering t...
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Shiqun Dai, Jiayao Zhang, Weidong Jia, Mingxiong Ou, Huitao Zhou, Xiang Dong, Hong Chen, Ming Wang, Yu Chen and Shuai Yang
An air-assisted electrostatic nozzle uses a combination of air-assisted atomization and electrostatic spray technology. This article optimizes the existing air-assisted electrostatic nozzles in terms of structural design to obtain a higher charge-to-mass...
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