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Long-Lasting Filtration of Oily Water by Anti-Fouling Underwater Oleophobic Sand Particles

Journal of Bionic Engineering 2024年第2期21卷 913-923页

作者： Xingyu Liu Junxu Chen Rui Wang Yifan Su Zhangheng Zhou Zezhong Hou Zhuoran Li Junhao Zhao Weicai Shi Xinquan yu zhaopeng yu Youfa Zhang State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu233000China Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing211189China Research Institute of Petroleum Engineering Technology of Jiangsu Oilfield Yangzhou225009China Kunshan Industrial Technology Research Institute Kunshan215300SuzhouChina School of Automotive Engineering Changshu Institute of TechnologyChangshu215500SuzhouChina

The produced water from the oilfield was purified with filter material and then injected back into the *** serpentine filter material was easy to harden with the increase in filtration amount,which affected the water quality.A superhydrophilic/underwater oleophobic serpentine filter material was successfully prepared by a simple method of coating modification,which exhibited long-lasting filtration of oily water,good filtration and anti-fouling properties,and resistance to *** film-forming material of the superhydrophilic/underwater oleophobic coating was composed of SiO_(2) particles with small size,which could completely and evenly cover the filter *** weight loss was only 7.6%after mechanical stirring for 90 *** with the original filter material,the superhydrophilic/underwater oleophobic serpentine filter material showed a better anti-fouling ability and resistance to *** filtration of crude oil emulsion and oil slick sewage showed a better backwashing *** 35 cycles of continuous filtration of suspended solids in wastewater,the backwashing rate reached 78.4%.The results provided an effective method for the filtration of oily wastewater in the oilfield.

关键词： Serpentine Underwater oleophobic Water immersion resistance Anti-fouling Hardening resistance

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A Hierarchical Conical Array with Controlled Adhesion and Drop Bounce Ability for Reducing Residual Non-Newtonian Liquids

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Journal of Bionic Engineering 2021年第3期18卷 637-648页

作者： yunyun Song zhaopeng yu Yan Liu Liming Dong Haile Ma School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013China School of Automotive Engineering Changshu Institute of TechnologyNo.99 Hushan RoadSuzhou 215500China Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun 130022China

As a result of frequent food waste and environmental pollution,there has been an increasing demand for the development of packaging materials that intrinsically inhibit and reduce likelihood of non-Newtonian liquids *** this work,inspired from ciliary structures on the leg of water strider,the hierarchical conical array was formed by magnetic field control and laser etching without any *** to the tapered geometry of the cones and the multiscale surface roughness of the array,the droplets would bounce many times after impacting with the superhydrophobic surface(SHS)and roll *** changing the spaces and apex angles of conical microcolumns the SHS has controlled adhesion,superior self-cleaning property and droplets bounce performance for a variety of non-Newtonian viscous *** suffering from various types of damage including repeated tape tearing,finger touch and folding test,the SHS still maintained excellent superhydrophobic property,which may have potential application as all kinds of packaging interface *** demonstrate that the excellent droplets bounce behavior of the hierarchical array enables the efficient and robust prevention of food liquids adhesion.

关键词： hierarchical conical array superhydrophobic controlled adhesion non-Newtonian liquids droplet bounce

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Properties and Structure of PEO Treated Aluminum Alloy

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Journal of Wuhan University of Technology(Materials Science) 2021年第3期36卷 424-432页

作者： SHI yuanji WANG Yanyan CHENG Cheng GUO Xunzhong TENG Bingyan yu zhaopeng LI Junwan LI Wei School of Mechanical Engineering Nanjing Vocational University of Industry TechnologyNanjing 210046China College of Material Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Automotive Engineering Changshu Institute of Technology Suzhou 215500China School of Materials Science and Engineering Shanghai UniversityShanghai 200072China

Plasma electrolytic oxidation(PEO)coatings were formed on 7075 aluminum alloy in silicate-borate based electrolyte with different duty *** physical and chemical properties of the PEO coatings were thoroughly *** wearing and corrosion properties of the coatings were evaluated by wearing experiments and potentiodynamic polarization tests,*** results showed that the micro-hardness of the coatings first increased and then decreased with the increasing duty *** a results,the wearing resistance of the coatings first increased and then decreased with the increasing duty *** analysis proved that the coatings were mainly composed ofα-Al_(2)O_(3)andγ-Al_(2)O_(3).The presence of wear scars on the worn surface morphology demonstrates that the three-body rolling was the main wear mechanism for coated *** corrosion study showed that the coating formed in the mixed electrolyte with duty cycle of 80%showed the most superior corrosion resistance.

关键词： 7075 aluminum alloy plasma electrolytic oxidation(PEO) wearing corrosion friction coefficient

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设施番茄废弃物连续还田对温室土壤质量的影响

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干旱地区农业研究 2024年第4期42卷 221-228,272页

作者：孙小妹车江伟王利蔡兴栋徐发明俞兆鹏白彭彭杨晓妮甘肃农业大学资源与环境学院甘肃兰州730070 凉州区农产品质量安全监督管理站甘肃武威733000

为探究设施蔬菜废弃物原位还田对土壤质量的影响,于2020—2022年设定番茄废弃物不还田(CK)、番茄废弃物原位还田1 a(TRR1)、番茄废弃物连续原位还田2 a(TRR2)、番茄废弃物连续原位还田3 a(TRR3)共4个处理,分析其对土壤理化性状及微生物... 详细信息

为探究设施蔬菜废弃物原位还田对土壤质量的影响,于2020—2022年设定番茄废弃物不还田(CK)、番茄废弃物原位还田1 a(TRR1)、番茄废弃物连续原位还田2 a(TRR2)、番茄废弃物连续原位还田3 a(TRR3)共4个处理,分析其对土壤理化性状及微生物数量的影响。结果表明:番茄废弃物还田使土壤pH值显著下降,土壤电导率和有机质含量随番茄废弃物的持续还田而显著增加。与对照相比,番茄废弃物持续原位还田处理使土壤速效磷和速效钾含量分别平均提高11.41%和31.40%;土壤脲酶活性变化不显著,TRR1、TRR2、TRR3处理土壤蔗糖酶活性和碱性磷酸酶活性较对照分别显著提高22.12%、30.46%、44.23%和17.90%、17.03%、11.08%。TRR3处理土壤细菌和放线菌数量显著高于其他处理,番茄成熟期TRR3处理分别比CK、TRR1和TRR2处理土壤细菌数量显著提高51.07%、61.21%和61.02%,土壤放线菌数量显著提高41.40%、20.61%和29.60%。土壤真菌数量和根结线虫数量随还田年限的增加而显著下降,其中TRR1、TRR2和TRR3处理根结线虫数量分别较CK降低30.14%、50.89%和81.70%。土壤质量指数分析结果表明,番茄废弃物还田使土壤质量从Ⅱ级提升为Ⅰ级,可作为管理蔬菜废弃物的环境友好型新策略。

关键词：设施番茄废弃物还田还田年限土壤特性土壤质量

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Simulation of Two-Phase Flowback Phenomena in Shale Gas Wells

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Fluid Dynamics & Materials Processing 2024年第2期20卷 349-364页

作者： Yongwei Duan zhaopeng Zhu Hui He Gaoliang Xuan Xuemeng yu Oil Gas Engineering Research Institute PetroChina Jilin OilfieldSongyuan138000China

The gas-water two-phaseﬂow occurring as a result of fracturingﬂuidﬂowback phenomena is known to impact signiﬁcantly the productivity of shale gas *** this work,this two-phaseﬂow has been simulated in the framework of a hybrid approach partially relying on the embedded discrete fracture model(EDFM).This model assumes the region outside the stimulated reservoir volume(SRV)as a single-medium while the SRV region itself is described using a double-medium strategy which can account for theﬂuid exchange between the matrix and the *** shale gas adsorption,desorption,diffusion,gas slippage effect,fracture stress sensitivity,and capillary imbibition have been *** shale gas production,pore pressure distribution and water saturation distribution in the reservoir have been *** inﬂuences of hydraulic fracture geometry and nonorthogonal hydraulic fractures on gas production have been determined and discussed *** simulation results show that the daily gas production has an upward and downward trend due to the presence of a large amount of fracturingﬂuid in the reservoir around the hydraulic *** smaller the angle between the hydraulic fracture and the wellbore,the faster the daily production of shale gas wells decreases,and the lower the cumulative *** fractures can increase the control volume of hydraulic fractures and improve the production of shale gas wells.

关键词： Shale gas fracturingﬂuid backﬂow the stimulated reservoir volume gas-water two-phase production

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和谐社会语境下的中国农民战争史研究

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江西社会科学 2008年第9期28卷 138-144页

作者：俞兆鹏南昌大学历史系

中国古代农民起义都由封建统治阶级的残酷剥削和压迫所激发。在资本主义生产方式产生之前,封建租佃关系是当时生产关系的必然选择,只要统治者能善待农民,农民不会造反。对封建统治者武力镇压农民应予斥责;但其实行恤民安民的招安政策,... 详细信息

中国古代农民起义都由封建统治阶级的残酷剥削和压迫所激发。在资本主义生产方式产生之前,封建租佃关系是当时生产关系的必然选择,只要统治者能善待农民,农民不会造反。对封建统治者武力镇压农民应予斥责;但其实行恤民安民的招安政策,能缓和阶级矛盾和维持生产秩序,应予肯定。农民战争结束后,社会残破。新王朝的统治者因慑于农民起义的威力,被迫采取"以民为本"的治国方针,轻徭薄赋,宽政弛刑,有利于经济社会的发展,而这也正是农民起义历史作用的反映。

关键词：农民起义缓和矛盾轻徭薄赋经济发展

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不确定参数结构的改进及静力区间分析

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农业机械学报 2006年第3期37卷 134-137页

作者：余朝蓬高峰吴杰北京航空航天大学汽车工程系南京航空航天大学能源与动力学院

针对区间参数结构的不确定性问题,提出一种新的静力区间分析方法。通过将函数的一阶导数也看成是区间的,利用一阶泰勒展开和函数的区间扩张,可以得到结构静力响应的更可靠的区间。将该方法应用于连续梁结构的静力分析,表明该方法是有效的。

关键词：区间参数结构静力区间分析区间扩张结构静力响应

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从朱熹按劾唐仲友看南宋贪官与营妓的关系

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江西社会科学 2005年第2期25卷 212-218页

作者：俞兆鹏南昌大学历史系

官僚嫖妓,不仅使其在生活上腐化堕落,同时必然导致其在经济上贪污受贿、政治上违法乱纪,从而给社会带来消极影响。这种现象自古有之,南宋也不例外。但是,至今为止,有关宋史研究的论文成千上万,而关于南宋贪官与妓女关系的研究却无人关... 详细信息

官僚嫖妓,不仅使其在生活上腐化堕落,同时必然导致其在经济上贪污受贿、政治上违法乱纪,从而给社会带来消极影响。这种现象自古有之,南宋也不例外。但是,至今为止,有关宋史研究的论文成千上万,而关于南宋贪官与妓女关系的研究却无人关注。本文就朱熹按劾唐仲友的奏状,来看一下南宋贪官与妓女的关系,以作典型解剖,希望能从一斑而窥全豹。唐仲友嫖妓虽然只是个案,而其中却透露出封建政治体制的本质,蕴含着重大而深刻的理论问题。

关键词：朱熹唐仲友贪官嫖妓权力腐败

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Proof of Aerobically Autoxidized Self-Charge Concept Based on Single Catechol-Enriched Carbon Cathode Material

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Nano-Micro Letters 2024年第4期16卷 1-13页

作者： Junyan Wang Wanchun Guo Kesong Tian Xinta Li Xinyu Wang Panhua Li yu Zhang Bosen Zhang Biao Zhang Shuhu Liu Xueai Li zhaopeng Xu Junjie Xu Haiyan Wang Yanglong Hou State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep‑Remediation in Water and Resource ReuseSchool of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004People’s Republic of China Beijing Key Laboratory for Magnetoelectric Materials and Devices Beijing Innovation Centre for Engineering Science and Advanced TechnologySchool of Materials Science and EngineeringPeking UniversityBeijing 100871People’s Republic of China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049People’s Republic of China Xi’an Rare Metal Materials Institute Co.Ltd Xi’an 710016People’s Republic of China

The self-charging concept has drawn considerable attention due to its excellent ability to achieve environmental energy harvesting,conversion and storage without an external power ***,most self-charging designs assembled by multiple energy harvesting,conversion and storage materials increase the energy transfer loss;the environmental energy supply is generally limited by climate and meteorological conditions,hindering the potential application of these selfpowered devices to be available at all *** on aerobic autoxidation of catechol,which is similar to the electrochemical oxidation of the catechol groups on the carbon materials under an electrical charge,we proposed an air-breathing chemical self-charge concept based on the aerobic autoxidation of catechol groups on oxygen-enriched carbon materials to ortho-quinone *** harvesting,conversion and storage functions could be integrated on a single carbon material to avoid the energy transfer loss among the different ***,the assembled Cu/oxygen-enriched carbon battery confirmed the feasibility of the air-oxidation self-charging/electrical discharging mechanism for potential *** air-breathing chemical self-charge concept could facilitate the exploration of high-efficiency sustainable air self-charging devices.

关键词： Carbon material Oxygen functionality Air oxidation self-charge

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压铸工艺对AT72镁合金力学性能的影响

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特种铸造及有色合金 2014年第4期34卷 409-413页

作者：于照鹏王柏树熊守美长春工业大学材料科学与工程学院清华大学材料学院

以AT72镁合金为研究对象,设计了压铸工艺。通过密度测定、力学性能测试,研究了压铸工艺对AT72镁合金力学性能的影响。所讨论的压铸工艺包括:常规压铸、真空压铸、普通钢质冲头、密封铜质冲头、慢压射速度、快压射增压压力、压室停留时... 详细信息

以AT72镁合金为研究对象,设计了压铸工艺。通过密度测定、力学性能测试,研究了压铸工艺对AT72镁合金力学性能的影响。所讨论的压铸工艺包括:常规压铸、真空压铸、普通钢质冲头、密封铜质冲头、慢压射速度、快压射增压压力、压室停留时间以及慢压射阶段降速排气。结果表明,选取合适的慢压射速度、快压射增压压力、压室停留时间,以及有效的慢压射阶段降速排气设计可以进一步提高压铸试样的力学性能。不同压铸工艺试样的密度越大,抗拉强度越高。

关键词：压铸工艺 AT72合金镁合金力学性能

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