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Li, Gang
- Design and Preliminary Field Experiment of Hydraulic Borehole Mining Tool with Expandable Nozzle
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PDF Views:125
Authors
Affiliations
1 College of Construction Engineering, Jilin University, Changchun-130061, CN
2 Key Lab of Drilling and Exploitation Technology in Complex Conditions, Ministry of Land and Resource, Changchun-130061, CN
3 College of Applied Technology, Jilin University, Changchun-130061, CN
1 College of Construction Engineering, Jilin University, Changchun-130061, CN
2 Key Lab of Drilling and Exploitation Technology in Complex Conditions, Ministry of Land and Resource, Changchun-130061, CN
3 College of Applied Technology, Jilin University, Changchun-130061, CN
Source
International Journal of Earth Sciences and Engineering, Vol 10, No 3 (2017), Pagination: 473-477Abstract
Hydraulic Borehole Mining (HBM) method is an important mining technology that has advantage for some special ore formation. However, the traditional hydraulic borehole mining tool’s nozzle is fixed that limits the single well ore production. In this paper, hydraulic borehole mining tool with ratchet controlled expandable nozzle was designed. High pressure water channel, ore pulp discharge channel and ratchet controlled expandable nozzle are three important parts in this design process. Then, the tool was conducted preliminary filed experiment in nong’an area and infrared camera was used to observing breaking condition of the wall of experiment hole. The experiments showed that the ratchet controlled expandable nozzle can expand and back in the experiment hole. And the hydraulic borehole mining tool can break the wall of experiment hole obviously. This research is a preliminary study that provides an ideal mining method and mining tool for thin ore formation.Keywords
Hydraulic Borehole Mining, Expandable Nozzle, Design and Field Experiment, Ore Particles.Full Text
- An Unprecedented 3D Eu(III)-Organic Framework Built of Imidazole Carboxylate by in situ Reaction
Abstract Views :277 |
PDF Views:80
Authors
Affiliations
1 Department of Chemical Engineering, Henan Polytechnic Institute, Nanyang 473000, CN
2 College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, CN
1 Department of Chemical Engineering, Henan Polytechnic Institute, Nanyang 473000, CN
2 College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, CN
Source
Current Science, Vol 115, No 6 (2018), Pagination: 1037-1039Abstract
In recent decades, metal-organic frameworks (MOFs) have appealed to researchers in the fields of gas adsorption1, catalysis2, luminescence3, magnetism4, porosity5, proton conductivity6,7, degradation of nerve agents to fuel cells8, and so on. Nevertheless, synthesizing MOFs with expectant structures and desired properties is still a difficult task for researchers. From a large number of previous reports, people found that, to design and prepare the multifunctional organic ligands is a useful way to obtain the desired MOFs.Full Text
References
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- Bibliometric Profile of Research on Antibiotics in Sediments During 1958–2016
Abstract Views :270 |
PDF Views:80
Authors
Affiliations
1 Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, CN
2 Civil and Environmental Engineering Department, University of Houston, Houston 77054, US
1 Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, CN
2 Civil and Environmental Engineering Department, University of Houston, Houston 77054, US
Source
Current Science, Vol 117, No 1 (2019), Pagination: 37-45Abstract
Antibiotic residues and antibiotic resistance genes (ARGs) can be accumulated in sediments. In this study, an improved bibliometric analysis was used to evaluate publications on antibiotics in sediments from the aspects of major countries, subject categories and keywords during 1958–2016. The results indicate that USA and China dominated studies in the recent period from 2005 to 2016. The most representative journal and subject category were Applied and Environmental Microbiology and Environmental Science and Ecology respectively. ARGs and antibiotic resistance bacteria involving mechanism such as sorption, adsorption and biodegradation were the mainstream research areas.Keywords
Antibiotics, International Collaborations, Research Hotspots, Sediments, Science Categories.Full Text
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