A5043363467- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Geochemistry and Elemental Analysis
- Orthopaedic implants and arthroplasty
- Advanced materials and composites
- Drilling and Well Engineering
- Industrial Technology and Control Systems
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Radiative Heat Transfer Studies
- Hydraulic Fracturing and Reservoir Analysis
- Risk and Safety Analysis
- Plant Diversity and Evolution
- Methane Hydrates and Related Phenomena
- Tribology and Wear Analysis
- Geological formations and processes
- Vibration Control and Rheological Fluids
- Mechanical Engineering and Vibrations Research
- Environmental Changes in China
- Aerodynamics and Fluid Dynamics Research
- Orthoptera Research and Taxonomy
- Industrial Gas Emission Control
China Railway Group (China)
2012-2024
China University of Petroleum, Beijing
2011-2024
Guizhou University
2008-2023
South China Normal University
2021
Bryant University
2020
Beijing Information Science & Technology University
2016-2020
Chinese Academy of Geological Sciences
2017
Kyushu University
2014-2015
Shenyang Agricultural University
2013
Zhaotong University
2012
The unclear understanding of the source rock characteristics for Paleogene Dongying Formation in Bozhong Sag leads to lack cognition oil and gas exploration. This research systematically evaluated discrepancy geochemical intervals based on detailed analysis using Rock‐Eval pyrolysis, total organic carbon (TOC), vitrinite reflectance ( R o ), maceral components, stable isotopes biomarker parameters. It discusses matter sources, depositional environment, thermal maturity hydrocarbon generation...
Abstract The Cambrian trilobite Bathynotus is a special morphology of Redlichiid, which characterized by wider thorax axis and an 11th macropleural segment bearing long, backwardly directed spine. Additionally, its 12th 13th pleural segments are narrow they terminate at fulcrum where fuse together to the posterior edge long genus widely distributed, occurring in North America, Siberia, Altay-Sayan fold belt Russia, South China, Tarim Basin Australia. It occurs primarily deposits upper part...
Abstract This article considers the influence of flow-induced vibrations on gas-filled tubing system used in high-pressure gas wells, adopts fluid–structure interaction four-equation model, combined with data field example well, and utilizes method characteristics to simulate string response valve-closure transient excitation at wellhead. The simulation results show that alternating stress reciprocating motion, caused by natural flow, aggravate fatigue failure, leakage, wear damage....
Oxidation degradation of gamma-irradiated UHMWPE (Ultra-high Molecular Weight Polyethylene) is a well-known problem related to the failure total joint replacement. The purpose this study investigate effects oxidation on mechanical and wear properties identify main causes change mechanisms crosslinked (50 kGy 100 kGy) after long-term shelf-ageing. techniques used were FTIR mapping micro-indentation test, which performed same cross-section specimen. Three distinct regions (the surface region,...
In this study, a methodology to evaluate and predict the vulnerability of natural gas supply chain is proposed, both dynamics stochasticity are considered. methodology, evaluation system established firstly based on definition chain, composed 12 indicators that cover upstream, midstream, downstream chain. Then, combination weighting method analytic hierarchy process entropy employed determine weight each indicator. Finally, dynamic prediction models developed set pair analysis Markov...
Agricultural mechanization was a research emphasis in mechanical engineering and one of the basic content modern agriculture, it possessed very significant effect on increasing agricultural productivity. The present status development tendency at home abroad were expounded this paper. Through analysis to theories promoting precision robots, automatic control put forward. At last, some advices speeding up given.
Intelligent materials had been widely used in many fields such as medical, civil construction and aerospace fields, but agricultural field, there were little applications reported. At present, general PDA equipments could not meet the requirements of data collection weakness GPS signals poor, didn’t possessed dusk, shockproof, waterproof ability, these problems would be solved easily if made based on intelligent materials. In this paper, basic concept, function application introduced, some...
The wear particles generated from ultra-high molecular weight polyethylene (UHMWPE) are considered as the main reason to cause osteolysis and aseptic loosening related failure of artificial joint. This paper investigated effect radiation dose contact pressure on rate shelf-aged crosslinked UHMWPE using a multi-directional pin-on-plate tester. Scanning electron microscopy (SEM) necessary software were used for quantitative analysis particles. Results showed that UHMWPE, surface region where...
Sinian strata (isotopic ages ranging from 1,900–850 m.y.) in Jixian County and its vicinity have been studied more detail the viewpoint of sedimentary geochemistry. Average chemical composition various rocks sequence (sandstone, siltstone, shale, dolomite limestone) has calculated. The periodicity general trend as exhibited course evolution element association demonstrated by mathematical statistics based on numerous analyses semiquantitative spectroscopic data with aid electronic computer....
This paper studies jet fuel’s silver strip corrosion property and analytic technology with different sulfide compounds, gives the experimental results of corrosiveness sulfide, test total sulfur elemental sulfur. And then, chemical which lead to corrosion, are also researched by experiments acid, alkali, water, mercury scrubbing nitrate, through analyses content halogen, nitrogen compound, constitute products XPS spectrum. Therefore, referencing these research works is helpful analyze...
The polytetrafluoroethylene (PTFE) with the good dielectric property is a kind of nonpolar material. Made from PTFE, cannula has high electrical insulation performance. This can be applied to equipment which requires for insulation. There are 3 kinds power-frequency voltage resistant experiments on PTFE cannulas inner diameter and outer 0.55/1.35, 0.7/1.5, 0.96/1.6, 0.46/0.96, 1.5/3.0 in 1970m elevation. tested at 85kV pure condition, humidity polluted condition separately 1 minute. result...
In this study, a data-driven methodology for the reliability analysis of natural gas compressor units is developed, and both historical failure data performance are employed. methodology, firstly, functions catastrophic degradation built. For failure, collected, rank regression model utilized to obtain function failure. support-vector machine employed predict unit’s parameters, determined by comparing parameters with threshold. Finally, unit assessed predicted integrating their correlation...
The ballistic performance of UD cloth/3D fabric composite targets made cloth and 3D were tested. deformation is larger than that woven fabrics after shot the weaker cloth, but its structural resistance to multiple shoot better cloth's.
Sediment was important storeroom of pollutants and acted as the"source"and the"sink"role [1 -2 ] . Phosphorus not only a biogenic elements but also major limiting factor water eutrophication.Primary productivity bodies effected by phosphorus migration circulation in interact sea-land [ 3 As we all known,crustal abundance iron 6.71% ranked fourth, it trace that played an role activities human life, meanwhile ,growth planktonic algae limited iron. Iron has strong absorption features because...
Experiments show that the surface wave, which is caused by a triangular prism performing simple harmonic vibration with low frequency and small amplitude on fluid surface, has directional force float. A series of experiments an in-depth study about this phenomenon were carried out, characteristics wave from different structures oscillation analyzed. launched vertical oscillating structures, such as prism, quadrangular hexagonal cylinder. The results direction directly opposite to edge, can...