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Non-electric welding and its application on equipment under emergency conditions

HU Junzhi, HU Chunhua, MA Shining, XIN Wentong

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 239-242 doi: 10.1007/s11465-007-0042-6

Abstract: that the welding technique is simple, the performance of the welding line is excellent, and that the applicationTherefore, non-electric welding shows favorable application value and potential prospect.

Keywords： development     strength     technique     application     favorable application    

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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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Recent progress in hydrodynamic characteristics research and application of annular centrifugal extractors

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 854-873 doi: 10.1007/s11705-022-2156-0

Abstract: The annular centrifugal extractor (ACE) integrates mixing and separation. It has been widely used in many industrial fields because of its low residence time, compact structure, and high mass transfer efficiency. Most of the literature has focused on flow instabilities, flow visualization, and computational fluid dynamics simulations. More recently, research on hydrodynamic behavior and structural optimization has received widespread attention. With the development of ACE technology, applications have been broadened into several new areas. Hence, this paper reviews research progress regarding ACE in terms of hydrodynamic characteristics and the structural improvements. The latest applications covering hydrometallurgy, nuclear fuel reprocessing, bio-extraction, catalytic reaction, and wastewater treatment are presented. We also evaluate future work in droplet breakup and coalescence mechanisms, structural improvements specific to different process requirements, scaling-up methods, and stability and reliability after scaling-up.

Keywords： annular centrifugal extractor     hydrodynamic characteristics     structure optimization     the latest application    

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Therapeutic application of hydrogen sulfide donors: the potential and challenges

Dan Wu,Qingxun Hu,Yizhun Zhu

Frontiers of Medicine 2016, Volume 10, Issue 1,   Pages 18-27 doi: 10.1007/s11684-015-0427-6

Abstract:

Hydrogen sulfide (H2S), a colorless gas smelling of rotten egg, has long been considered a toxic gas and environment hazard. However, evidences show that H2S plays a great role in many physiological and pathological activities, and it exhibits different effects when applied at various doses. In this review, we summarize the chemistry and biomedical applications of H2S-releasing compounds, including inorganic salts, phosphorodithioate derivatives, derivatives of Allium sativum extracts, derivatives of thioaminoacids, and derivatives of anti-inflammatory drugs.

Keywords： hydrogen sulfide     cardiovascular     cancer     hypertension    

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Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 96-101 doi: 10.1007/s11705-007-0019-3

Abstract: In this paper, preparation methods, surface modification and application of magnetic carriers are reviewed

Keywords： microsphere     biomedicine     DNA     purification     preparation    

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Theoretical research and application of petrochemical Cyber-physical Systems

Jiming WANG

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 242-255 doi: 10.15302/J-FEM-2017053

Abstract: A petrochemical smart factory is a green, efficient, safe and sustainable modern factory that combines cutting-edge information and communication technology with petrochemical advanced technology and equipment. A Cyber-physical System (CPS) is the infrastructure of a petrochemical smart factory. Based on the future challenges of the petrochemical industry, this paper proposes the definition, connotation and framework of a petrochemical CPS and constructs a CPS system at the enterprise, unit and field levels, respectively. Furthermore, the paper provides theoretical support and implementation reference of a CPS in the petrochemical industry and other industries by investigating the construction practice of a multi-level CPS in the China Petrochemical Corporation (SINOPEC).

Keywords： Cyber-physical System (CPS)     petrochemical industry     smart factory    

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A review on the application of nanofluids in enhanced oil recovery

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1165-1197 doi: 10.1007/s11705-021-2120-4

Abstract: Enhanced oil recovery (EOR) has been widely used to recover residual oil after the primary or secondary oil recovery processes. Compared to conventional methods, chemical EOR has demonstrated high oil recovery and low operational costs. Nanofluids have received extensive attention owing to their advantages of low cost, high oil recovery, and wide applicability. In recent years, nanofluids have been widely used in EOR processes. Moreover, several studies have focused on the role of nanofluids in the nanofluid EOR (N-EOR) process. However, the mechanisms related to N-EOR are unclear, and several of the mechanisms established are chaotic and contradictory. This review was conducted by considering heavy oil molecules/particle/surface micromechanics; nanofluid-assisted EOR methods; multiscale, multiphase pore/core displacement experiments; and multiphase flow fluid-solid coupling simulations. Nanofluids can alter the wettability of minerals (particle/surface micromechanics), oil/water interfacial tension (heavy oil molecules/water micromechanics), and structural disjoining pressure (heavy oil molecules/particle/surface micromechanics). They can also cause viscosity reduction (micromechanics of heavy oil molecules). Nanofoam technology, nanoemulsion technology, and injected fluids were used during the EOR process. The mechanism of N-EOR is based on the nanoparticle adsorption effect. Nanoparticles can be adsorbed on mineral surfaces and alter the wettability of minerals from oil-wet to water-wet conditions. Nanoparticles can also be adsorbed on the oil/water surface, which alters the oil/water interfacial tension, resulting in the formation of emulsions. Asphaltenes are also adsorbed on the surface of nanoparticles, which reduces the asphaltene content in heavy oil, resulting in a decrease in the viscosity of oil, which helps in oil recovery. In previous studies, most researchers only focused on the results, and the nanoparticle adsorption properties have been ignored. This review presents the relationship between the adsorption properties of nanoparticles and the N-EOR mechanisms. The nanofluid behaviour during a multiphase core displacement process is also discussed, and the corresponding simulation is analysed. Finally, potential mechanisms and future directions of N-EOR are proposed. The findings of this study can further the understanding of N-EOR mechanisms from the perspective of heavy oil molecules/particle/surface micromechanics, as well as clarify the role of nanofluids in multiphase core displacement experiments and simulations. This review also presents limitations and bottlenecks, guiding researchers to develop methods to synthesise novel nanoparticles and conduct further research.

Keywords： nanofluid     EOR mechanism     nanoparticle adsorption     interface property     internal property    

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Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 1-12 doi: 10.1007/s11783-007-0001-9

Abstract: This paper discusses the development and application of the appropriate technologies, including natural

Keywords： reclamation     Wastewater discharge     renovated     biological treatment     application    

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Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower

Yisheng ZHANG, Delan ZHU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 165-171 doi: 10.15302/J-FASE-2017145

Abstract: The influences of different parameters such as droplet diameter, application intensity, specific powerEquations of application intensity, specific power with sprinkler irrigation time and flower injury ratioApplication intensity was also correlated with injury when the droplet diameter was larger than 1 mm.When the duration of sprinkler irrigation was 1, 5 and 10 min, the threshold of impinging damage of application

Keywords： application intensity     damage     floriculture     flowers     specific power     sprinkler irrigation    

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Development and application of high-end aerospace MEMS

Weizheng YUAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 567-573 doi: 10.1007/s11465-017-0424-3

Abstract:

This paper introduces the design and manufacturing technology of aerospace microelectromechanical systems (MEMS) characterized by high performance, multi-variety, and small batch. Moreover, several kinds of special MEMS devices with high precision, high reliability, and environmental adaptability, as well as their typical applications in the fields of aeronautics and aerospace, are presented.

Keywords： MEMS     design and manufacture technology     aeronautic and aerospace    

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Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 381-393 doi: 10.1007/s11709-011-0118-6

Abstract: This paper presents a unified calculation method and its application in determining the uniaxial mechanical

Keywords： concrete     mechanical properties     stress-strain relationship     uniaxial stress     application    

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Simplistic hydrothermal synthesis approach for fabricating photoluminescent carbon dots and its potential application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 536-547 doi: 10.1007/s11705-022-2239-y

Abstract: In the practical field of application, these carbon dots have been used as sensing probes for the detection

Keywords： carbon dots     fluorescence     heavy metal sensing     practical application     photoluminescence    

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Application of

Weifang SHI, Weihua ZENG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 117-127 doi: 10.1007/s11783-013-0581-5

Abstract: The homogeneous risk characteristics within a sub-area and the heterogeneous from one sub-area to another are unclear using existing environmental risk zoning methods. This study presents a new zoning method by determining and categorizing the risk characteristics using the -means clustering data mining technology. The study constructs indices and develops index quantification models for environmental risk zoning by analyzing the mechanism of environmental risk occurrence. We calculate the source risk index, air risk field index, water risk field index, and target vulnerability of the study area with Nanjing Chemical Industrial Park using a 100 m × 100 m mesh grid as the basic zoning unit, and then use -means clustering to analyze the environmental risk in the area. We obtain the optimal clustering number with the largest average silhouette coefficient by calculating the average silhouette coefficients of clustering at different -values. The clustering result with the optimal clustering number is then used for the environmental risk zoning, and the zoning result is mapped using the geographic information system. The study area is divided into five sub-areas. The common environmental risk characteristics within the same sub-area, as well as the differences between sub-areas, are presented. The zoning is helpful in risk management and is convenient for decision makers to distribute limited resources to different sub-areas in the design of risk reducing intervention.

Keywords： environmental risk zoning     k-means clustering     silhouette coefficient     chemical industrial park     risk management    

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Innovative method of culturing bdelloid rotifers for the application of wastewater biological treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1477-4

Abstract:

• An innovative method of culturing bdelloid rotifer fed on flour was proposed.

Keywords： Mass culture     Bdelloid rotifer     Habrotrocha     Wheat flour     Sludge settleability    

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Electrolyzed water and its application in animal houses

Weichao ZHENG,Li NI,Baoming LI

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 3,   Pages 195-205 doi: 10.15302/J-FASE-2016109

Abstract: systems for SAEW and NEW, the antimicrobial mecha- nism of EW, and recent developments related to the application

Keywords： disinfection     poultry and livestock     slightly acidic electrolyzed water     neutral electrolyzed water    

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Title Author Date Type Operation

Non-electric welding and its application on equipment under emergency conditions

HU Junzhi, HU Chunhua, MA Shining, XIN Wentong

Journal Article

Cryogenic minimum quantity lubrication machining: from mechanism to application

Journal Article

Recent progress in hydrodynamic characteristics research and application of annular centrifugal extractors

Journal Article

Therapeutic application of hydrogen sulfide donors: the potential and challenges

Dan Wu,Qingxun Hu,Yizhun Zhu

Journal Article

Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Journal Article

Theoretical research and application of petrochemical Cyber-physical Systems

Jiming WANG

Journal Article

A review on the application of nanofluids in enhanced oil recovery

Journal Article

Development and application of some renovated technologies for municipal wastewater treatment in China

QIAN Yi, WEN Xianghua, HUANG Xia

Journal Article

Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower

Yisheng ZHANG, Delan ZHU

Journal Article

Development and application of high-end aerospace MEMS

Weizheng YUAN

Journal Article

Unified calculation method and its application in determining the uniaxial mechanical properties of concrete

Faxing DING, Xiaoyong YING, Linchao ZHOU, Zhiwu YU

Journal Article

Simplistic hydrothermal synthesis approach for fabricating photoluminescent carbon dots and its potential application

Journal Article

Application of

Weifang SHI, Weihua ZENG

Journal Article

Innovative method of culturing bdelloid rotifers for the application of wastewater biological treatment

Journal Article

Electrolyzed water and its application in animal houses

Weichao ZHENG,Li NI,Baoming LI

Journal Article