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Cryogenic minimum quantity lubrication machining: from mechanism to application

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 649-697 doi: 10.1007/s11465-021-0654-2

Abstract: gas and the lack of lubricating performance of cryogenic cooling technology limit their industrial applicationFirst, the application forms and process characteristics of CMQL devices in turning, milling, and grindingThe effects of CMQL are systematically analyzed based on its mechanism and application form.Results show that the application effect of CMQL is better than that of cryogenic technology or MQL aloneFinally, the prospect, which provides basis and support for engineering application and development of

Keywords： cryogenic minimum quantity lubrication (CMQL)     cryogenic medium     processing mode     device application     mechanism     application effect    

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A review of salting-out effect and sugaring-out effect: driving forces for novel liquid-liquid extraction

Chuhan Fu, Zhuoxi Li, Zengran Sun, Shaoqu Xie

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 854-871 doi: 10.1007/s11705-020-1980-3

Abstract: Biofuels and bio-based chemicals are getting more and more attention because of their sustainable and renewable properties and wide industrial applications. However, the low concentrations of the targeted products in their fermentation broths, the complicated components of the broths and the high energy-intensive separation and purification process hinder the competitiveness of biofuels and biochemicals with the petro-based ones. Hence, the production and the separation of biofuels and bio-based chemicals in energy-saving, low-cost and greenness ways become hot topics nowadays. This review introduces the separation technologies (salting-out extraction, salting-out, sugaring-out extraction, and sugaring-out) that extract biobutanol, 1,3-propanediol, 2,3-butanediol, acetoin, organic acids and other bio-based chemicals from fermentation broths/aqueous solutions. Salting-out/sugaring-out extraction and salting-out/sugaring-out technologies display the high separating efficiency and the high targeted product yields. In addition, they are easy to operate and require low cost for separating products. Hence, they are the effective and potential technologies for separating targeted products in the wide industrial applications. The successful research into the salting-out/sugaring-out and salting-out/sugaring-out extraction not only affords biofuels and biochemical but also opens a door for the development of novel separation methods.

Keywords： salting-out     sugaring-out     extraction     biofuels     biochemicals     application    

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Application of MoS in the space environment: a review

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0755-1

Abstract: A considerable portion of space mechanism failures are related to space tribological problems. Cold welding in high vacuum; surface erosion and collision damage caused by various radiations, high temperature oxidation under atomic oxygen (AO) bombardment; and thermal stress caused by temperature alternation all alter the physical, chemical, and friction properties of materials. In particular, the space vibration caused by alternating temperatures and microgravity environments can alter the motion of the contact body, further affecting its friction properties. Improving the friction properties of contact surfaces in the space environment is an important way to extend the service life of spacecraft. Traditional lubricants can no longer meet the lubrication requirements of the space environment. This study describes the characteristics of the space environment and the applications of solid lubricants. The friction properties of MoS2, a solid lubricant widely used in space, are discussed. The synergistic lubrication of MoS2 with surface textures or metals is presented. Advances in research on the friction properties of collision sliding contacts in the space environment are reviewed. The combination of MoS2 and soft metals with surface textures is introduced to reduce the effects of vibration environments on the friction properties of moving parts in space mechanisms. Finally, the challenges and future research interests of MoS2 films in space tribology are presented.

Keywords： MoS2     soft metal     space environment     surface texture     synergistic effect     vibration    

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A review of low-temperature plasma-assisted machining: from mechanism to application

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0734-y

Abstract: Hot plasma improves material machinability via the thermal softening effect induced by the high temperaturecold plasma can be summarized as chemical reactions to reduce material hardness, the hydrophilization effectto improve surface wettability, and the Rehbinder effect to promote fracture.

Keywords： low-temperature plasma     difficult-to-cut material     machinability     hydrophilization effect     Rehbindereffect    

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Application Example of Creativity Thinking and Its Revelation Effect

Li Qiang

Strategic Study of CAE 2003, Volume 5, Issue 6,   Pages 59-62

Abstract: And the application process of creativity thinking and its revelation effect have been discussed, too

Keywords： gravity separation     creativity thinking     divergence-convergence model     application example    

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Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 455-461 doi: 10.15302/J-FASE-2018232

Abstract: The prewetting rate of 1.6 L per 120 m had the most significant effect on improving the deposition of

Keywords： aerial spray     cotton     deposition     flowering period     leaf angle     prewetting     UAV    

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Promotional effect of ion-exchanged K on the low-temperature hydrothermal stability of Cu/SAPO-34 andits synergic application with Fe/Beta catalysts

Chen Wang, Jun Wang, Jianqiang Wang, Meiqing Shen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1322-1

Abstract: Abstract • K+ hinder the structural degradation of Cu/SAPO-34 under humid condition<100°C. • K+ on Cu/SAPO-34 brings lower acidity and inferior SCR activity at high temperature. • Fe/Beta was used to compensate the low activity of Cu/SAPO-34 at high temperature. • The hybrid catalysts with KCu/SAPO-34 and Fe/Beta show a great potential for using. K ions were introduced onto Cu/SAPO-34 catalysts via the ion-exchange process in order to improve their stability under low-temperature hydrothermal aging. The changes in structure and copper-species contents of these catalysts upon hydrothermal aging were probed in order to investigate their effects on selective catalytic reduction (SCR) activity. For the fresh Cu/SAPO-34 catalysts, K ions had little influence on the chabazite framework but effected their acidities by exchanging with acid sites. After hydrothermal aging, the structural integrity and amount of active sites decreased on pure Cu/SAPO-34. While the K-loaded catalysts showed improved chabazite structure, acidity, and active site conservation with increasing K loading. However, although the 0.7 wt% K catalyst maintained the same crystallinity, active site abundance, and low-temperature SCR activity as the fresh catalyst upon aging, an apparent decrease in SCR activity at high temperature was observed because of the inevitable decrease in the number of Brönsted acid sites. To compensate for the activity disadvantage of K-loaded Cu/SAPO-34 at high temperature, Fe/Beta catalysts were co-employed with K-loaded Cu/SAPO-34, and a wide active temperature window of SCR activity was obtained. Thus, our study reveals that a combined system comprising Fe/Beta and K-loaded Cu/SAPO-34 catalysts shows promise for the elimination of NOx in real-world applications.

Keywords： Selective catalytic reduction     Cu/SAPO-34 catalyst     Ion-exchanged K     Low-temperature hydrothermal stability     Fe/Beta catalyst    

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Application of ecosystem health cost-effect analysis in eco-planning in Guangzhou City, China

GUO Xiurui, MAO Xianqiang, YANG Jurong, YANG Zhifeng

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 299-304 doi: 10.1007/s11783-007-0050-0

Abstract: To quantify the effect of ecological improvement from eco-planning, an ecosystem health assessment methodThen, to evaluate the validity of planning measures, a cost-effect analysis of the different scenariosthe planned projects as the cost and ecosystem health state after implementing the scenarios as the effect

Keywords： ±10 %     decision support     influence     eco-environmental construction     planning    

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The relativistic effect and application of atomic mass

Zhu Zhenghe,Fu Yibei,Meng Daqiao,Kang Yongjian

Strategic Study of CAE 2011, Volume 13, Issue 1,   Pages 21-24

Abstract:

The present work devotes to the calculation of relativistic and non-relativistic electronic state and energy for atoms C, O, S, Se, Te, Sm and Pu. In comparison between the relativistic and non-relativistic electronic energy,it is concluded that if energy difference of relativistic and non-relativistic electronic energy for O atom is supposed as unit, then there will be 17.5,479,6 781 and 46 166 for S,Se,Sm and Pu ,respectively. The energy difference of relativistic and non-relativistic electronic energy for Pu is about 8.72 % of its total energy. Therefore, it is quite necessary to calculate heavy atoms using relativistic theory.

Keywords： Dirac theory     relativistic effect of atomic mass     samarium and plutonium    

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Research on Bionic Fungicide Yintai and Its Application

Meng Zhaoli,Fang Xiangyang,Luo Lan,Shang Jian

Strategic Study of CAE 2007, Volume 9, Issue 3,   Pages 28-34

Abstract:

Yintai (p-hydroxy butrophenone) is a kind of bionic fungicides synthesized by simulating the lead compound of ginkgol isolated from the exosperm of ginkgo fruit. 8.3-time diluted solution of alcohol crude extract from the ginkgo fruit showed 100% inhibtion on the pathogen of apple canker (Valsa mali), and 50% inhibition for the 25-time solution. Both 200-time and400time solutions of ginkgol, extracted from external seed coat of ginkgo, had 100% inhibition on pathogen of apple canker(Valsa mali). EC50 of 20% Yintai ME against4kinds of pathogens, including apple canker, tomato gray mold, and so on, ranges from 17.26 mg/L to 48.43 mg/L, better than the contrast chemicals respectively. Field control effects on4kinds of diseases, e.g. , Rhizoctonia cerealis, are higher than 85%, with safety to non-target organisms, and no symptom of pesticide resistance. Both LD50of acute oral toxicity and LD50 of acute dermal toxicity to mouse are 4640 mg/kg by Yintai technical material, and 3160 mg/kg and 2150 mg/kg by 20% Yintai EC coorespondingly. Trials of subchronic toxicity (90days) revealed that oral toxicity was 19.1 mg/kg for female, and 18.3 mg/kg for male,  with negative results on Ames test, micro-nucleus test, and chromosome-type aberration test.

Keywords： ginkgol     bionic synthesis     Yintai     control effect    

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Analysis of effect of different construction methods of piles on the end effect on skin friction of piles

ZHOU Hongbo, CHEN Zhuchang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 458-463 doi: 10.1007/s11709-007-0062-7

Abstract: Based on the comparative analysis of end effect on skin friction of displacement-pile (driven pile),the end effect on skin friction of bored pile is studied.The end effect on skin friction between driven pile and bored pile is different and the end effect onThe concept of additional mud cake formed by the effect of cushion at the bottom of borehole during pouringconcrete is introduced to explain the mechanism of end effect on skin friction of the bored pile.

Keywords： distance     different     concept     additional     bottom    

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A review on different theoretical models of electrocaloric effect for refrigeration

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 478-503 doi: 10.1007/s11708-023-0884-6

Abstract: The performance parameters for characterizing the electrocaloric effect are isothermal entropy changeThis paper reviews the electrocaloric effect of ferroelectric materials based on different theoreticalsimulation, and finite element analysis) to explain the basic theory of calculating the electrocaloric effectThen, it comprehensively reviews the recent progress of these methods in regulating the electrocaloric effectand the generation mechanism of the electrocaloric effect.

Keywords： electrocaloric effect     effective Hamiltonian     phase-field modeling     different theoretical models    

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A new miniaturized engine based on thermomagnetic effect of magnetic fluids

Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 160-166 doi: 10.1007/s11708-009-0018-9

Abstract: NdFeB magnet, a kerosene-based magnetic fluid and a rotor, is proposed based on the thermomagnetic effect

Keywords： magnetic fluid     thermomagnetic effect     engine    

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Title Author Date Type Operation

Cryogenic minimum quantity lubrication machining: from mechanism to application

Journal Article

A review of salting-out effect and sugaring-out effect: driving forces for novel liquid-liquid extraction

Chuhan Fu, Zhuoxi Li, Zengran Sun, Shaoqu Xie

Journal Article

Application of MoS in the space environment: a review

Journal Article

A review of low-temperature plasma-assisted machining: from mechanism to application

Journal Article

Application Example of Creativity Thinking and Its Revelation Effect

Li Qiang

Journal Article

Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Journal Article

Promotional effect of ion-exchanged K on the low-temperature hydrothermal stability of Cu/SAPO-34 andits synergic application with Fe/Beta catalysts

Chen Wang, Jun Wang, Jianqiang Wang, Meiqing Shen

Journal Article

Application of ecosystem health cost-effect analysis in eco-planning in Guangzhou City, China

GUO Xiurui, MAO Xianqiang, YANG Jurong, YANG Zhifeng

Journal Article

The relativistic effect and application of atomic mass

Zhu Zhenghe,Fu Yibei,Meng Daqiao,Kang Yongjian

Journal Article

Gaoxin: Microwave Induced Hot Spot Effect and Its Application in Chemical Separation (2022-4-16)

9 Jun 2022

Conference Videos

Research on Bionic Fungicide Yintai and Its Application

Meng Zhaoli,Fang Xiangyang,Luo Lan,Shang Jian

Journal Article

Li Haoran: Research on the Transformation Decision of "Replacing Coal With Gas" Based on Peer Effectand Network Effect (2020-7-11)

19 May 2022

Conference Videos

Analysis of effect of different construction methods of piles on the end effect on skin friction of piles

ZHOU Hongbo, CHEN Zhuchang

Journal Article

A review on different theoretical models of electrocaloric effect for refrigeration

Journal Article

A new miniaturized engine based on thermomagnetic effect of magnetic fluids

Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN

Journal Article