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Real atom economy and its application for evaluation the green degree of a process

Weihan WANG, Jing Lü, Li ZHANG, Zhenhua LI

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 349-354 doi: 10.1007/s11705-010-1030-7

Abstract: Among the 12 principles of green chemistry, only atom economy and E factor can be expressed quantitativelyWe further suggested an equation to correlate E factor with RAE.

Keywords： green chemistry     real atom economy     E factor     atom economy     yield    

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Effects of hypoxia inducible factor-1alpha siRNA on the invasion of human Hela cells and expression of

Bin YANG MS , Xianglin YUAN , Yanmei ZOU , Qingsong XI , Guoxian LONG , Qiang FU , Guangyuan HU MM ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 303-308 doi: 10.1007/s11684-009-0060-3

Abstract: on the invasion and the related protein expression of Hela cells and the role of hypoxia inducible factorThe expression of HIF-1α, E-cadherin, β-catenin, and actin was detected using Western blot.The expression of HIF-1α, E-cadherin, and β-catenin in tumor grafts was assayed immunohistochemicallyWestern blot results revealed that the bands of HIF-1α, E-cadherin, β-catenin, and actin proteinsThe expression of E-cadherin, β-catenin, and actin was detected in the H group under hypoxia for

Keywords： hypoxia     actin     β     -catenin     E-cadherin     invasion    

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Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault

Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1393-1404 doi: 10.1007/s11709-019-0563-1

Abstract: The factor of safety is used to quantitatively assess the stability of the tunnel section.

Keywords： pre-grouting     stability analysis     factor of safety     discontinuity layout optimization    

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Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1044-9

Abstract:

Metal recovery techniques from electronic waste reported in literature.

Metal recovery processes followed in Industries from electronic waste.

Sustainability analysis of metal recovery processes from electronic waste.

Keywords： E-waste     Metal recovery     Metal Recovery from E-waste (MREW)     Sustainability    

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Role of the forkhead transcription factor FOXO-FOXM1 axis in cancer and drug resistance

Fung Zhao, Eric W.-F. Lam

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 376-380 doi: 10.1007/s11684-012-0228-0

Abstract: Recent research shows that the forkhead transcription factor FOXM1 is a direct transcriptional target

Keywords： FOXO3a     FOXM1     transcription factor     cancer     drug resistance     tumorigenesis    

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LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 871-881 doi: 10.1007/s11709-022-0863-8

Abstract: failure criteria of practical soil mass are very complex, and have significant influence on the safety factorto determine the failure criterion, the limit equilibrium method can be used to calculate the safety factorAnalysis of results of the safety factor of two three-dimensional homogeneous slopes shows that the maximum

Keywords： slope stability     safety factor     failure criterion     least square support vector machine    

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lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Frontiers of Medicine 2023, Volume 17, Issue 2,   Pages 317-329 doi: 10.1007/s11684-022-0931-4

Abstract: Moreover, serine/arginine-rich splicing factor 10 (SRSF10) knockdown increased the LC3II/LC3IMechanistically, lncR-GAS5 regulated the downstream splicing factor SRSF10 to impair autophagy

Keywords： lncR-GAS5     miR-193-5p     splicing factor SRSF10     autophagy     atherogenesis    

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risks of heavy metals, polybrominated diphenyl ethers, and polychlorinated dibenzo-dioxins/furans at e-waste

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1679-z

Abstract:

● Heavy metals and organic toxins may persist in legacy sites for a long time.

Keywords： E-waste     Human health risk     Organ risk     Heavy metal toxicity     PBDE     PCDD/F    

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Molecular dynamics modeling of a single diamond abrasive grain in grinding

SAVVOPOULOS,Nikolaos E. KARKALOS,Dimitrios E. MANOLAKOS

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 168-175 doi: 10.1007/s11465-015-0337-y

Abstract:

In this paper the nano-metric simulation of grinding of copper with diamond abrasive grains, using the molecular dynamics (MD) method, is considered. An MD model of nano-scale grinding, where a single diamond abrasive grain performs cutting of a copper workpiece, is presented. The Morse potential function is used to simulate the interactions between the atoms involved in the procedure. In the proposed model, the abrasive grain follows a curved path with decreasing depth of cut within the workpiece to simulate the actual material removal process. Three different initial depths of cut, namely 4 ?, 8 ? and 12 ?, are tested, and the influence of the depth of cut on chip formation, cutting forces and workpiece temperatures are thoroughly investigated. The simulation results indicate that with the increase of the initial depth of cut, average cutting forces also increase and therefore the temperatures on the machined surface and within the workpiece increase as well. Furthermore, the effects of the different values of the simulation variables on the chip formation mechanism are studied and discussed. With the appropriate modifications, the proposed model can be used for the simulation of various nano-machining processes and operations, in which continuum mechanics cannot be applied or experimental techniques are subjected to limitations.

Keywords： molecular dynamics     abrasive process     chip formation     cutting force     temperature    

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The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1015-1024 doi: 10.1007/s11783-014-0670-0

Abstract: land area types with different levels of productivity, they introduced the concept of an equivalence factorThis relates to the average primary biomass productivities of different types of land (i.e. arable landbuilt-up land has an equivalence factor of 1.71, forest and fossil energy land has a factor of 1.41,pasture has a factor of 0.44 and water/fishery 0.35; Finally, the equivalence factor of 6 land areaThe NPP of each ecosystem type varies along with the equivalence factor in different provinces.

Keywords： ecological footprint     equivalence factor     net primary production     biological capacity     land types    

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Policy options for Agriculture Green Development by farmers in China

Laurence E. D. SMITH

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 1,   Pages 90-97 doi: 10.15302/J-FASE-2019290

Abstract:

Farmers are the key agents who manage land and water. Agriculture Green Development (AGD) requires a transformation in farming from high resource consumption and environmental cost to sustainable intensification with high productivity, high resource use efficiency and low environmental risk. This paper analyzes the public policy challenge of AGD and makes the case for a location-sensitive policy mix made up of regulation, advice provision, voluntarism and targeted incentives. The public agricultural extension service in China is a key resource, but one that requires reorientation and reform with the aim of better balancing high farm productivity with environmental protection.

Keywords： agriculture     environment     development     incentives     policy     regulation    

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A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 877-894 doi: 10.1007/s11709-021-0756-2

Abstract: Many bridge design specifications consider multi-lane factors (MLFs) a critical component of the traffic load model. Measured multi-lane traffic data generally exhibit significant lane disparities in traffic loads over multiple lanes. However, these disparities are not considered in current specifications. To address this drawback, a multi-coefficient MLF model was developed based on an improved probabilistic statistical approach that considers the presence of multiple trucks. The proposed MLF model and approach were calibrated and demonstrated through an example site. The model sensitivity analysis demonstrated the significant influence of lane disparity of truck traffic volume and truck weight distribution on the MLF. Using the proposed approach, the experimental site study yielded MLFs comparable with those directly calculated using traffic load effects. The exclusion of overloaded trucks caused the proposed approach, existing design specifications, and conventional approach of ignoring lane load disparity to generate comparable MLFs, while the MLFs based on the proposed approach were the most comprehensive. The inclusion of overloaded trucks caused the conventional approach and design specifications to overestimate the MLFs significantly. Finally, the benefits of the research results to bridge practitioners were discussed.

Keywords： bridges     multi-lane factor     traffic load     lane load disparity     multi-truck presence     weigh-in-motion    

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The Use of Data Mining Techniques in Rockburst Risk Assessment

Luis Ribeiro e Sousa, Tiago Miranda, Rita Leal e Sousa, Joaquim Tinoco

Engineering 2017, Volume 3, Issue 4,   Pages 552-558 doi: 10.1016/J.ENG.2017.04.002

Abstract:

Rockburst is an important phenomenon that has affected many deep underground mines around the world. An understanding of this phenomenon is relevant to the management of such events, which can lead to saving both costs and lives. Laboratory experiments are one way to obtain a deeper and better understanding of the mechanisms of rockburst. In a previous study by these authors, a database of rockburst laboratory tests was created; in addition, with the use of data mining (DM) techniques, models to predict rockburst maximum stress and rockburst risk indexes were developed. In this paper, we focus on the analysis of a database of in situ cases of rockburst in order to build influence diagrams, list the factors that interact in the occurrence of rockburst, and understand the relationships between these factors. The in situ rockburst database was further analyzed using different DM techniques ranging from artificial neural networks (ANNs) to naive Bayesian classifiers. The aim was to predict the type of rockburst—that is, the rockburst level—based on geologic and construction characteristics of the mine or tunnel. Conclusions are drawn at the end of the paper.

Keywords： Rockburst     Data mining     Bayesian networks     In situ database    

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Zero E-waste: Regulatory impediments and blockchain imperatives

Mengjun Chen, Oladele A. Ogunseitan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1402-x

Abstract: Electronic waste (E-waste), the fastest growing category of solid hazardous waste presents various uniqueElectronic product repair, reuse and remanufacture (3re) are crucial for effective source reduction of E-wastediscs (CDs) to identify the challenges and to explore solutions for managing the risks associated with E-wasterefurbish fake/counterfeit product and copyright exhaustion, are proposed to accelerate source reduction in E-waste

Keywords： Blockchain     E-waste     Regulatory Policy     Copyright Laws     Repair-Reuse-Remanufacture     Toxicity    

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Investigation of electrochemical degradation and application of e-paper dyes in organic solvents

Luhai LI, Ming WANG, Yi FANG, Shunan QIAO

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 182-185 doi: 10.1007/s11705-009-0062-3

Abstract: A dye electrophoresis in organic solution flexible prototype e-paper display was formed and the display

Keywords： electrochemical degradation     electrophoresis     e-paper     oxidized azobenzene group    

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Title Author Date Type Operation

Real atom economy and its application for evaluation the green degree of a process

Weihan WANG, Jing Lü, Li ZHANG, Zhenhua LI

Journal Article

Effects of hypoxia inducible factor-1alpha siRNA on the invasion of human Hela cells and expression of

Bin YANG MS , Xianglin YUAN , Yanmei ZOU , Qingsong XI , Guoxian LONG , Qiang FU , Guangyuan HU MM ,

Journal Article

Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault

Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG

Journal Article

Sustainability of metal recovery from E-waste

Biswajit Debnath, Ranjana Chowdhury, Sadhan Kumar Ghosh

Journal Article

Role of the forkhead transcription factor FOXO-FOXM1 axis in cancer and drug resistance

Fung Zhao, Eric W.-F. Lam

Journal Article

LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Journal Article

lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Journal Article

risks of heavy metals, polybrominated diphenyl ethers, and polychlorinated dibenzo-dioxins/furans at e-waste

Journal Article

Molecular dynamics modeling of a single diamond abrasive grain in grinding

SAVVOPOULOS,Nikolaos E. KARKALOS,Dimitrios E. MANOLAKOS

Journal Article

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Journal Article

Policy options for Agriculture Green Development by farmers in China

Laurence E. D. SMITH

Journal Article

A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Journal Article

The Use of Data Mining Techniques in Rockburst Risk Assessment

Luis Ribeiro e Sousa, Tiago Miranda, Rita Leal e Sousa, Joaquim Tinoco

Journal Article

Zero E-waste: Regulatory impediments and blockchain imperatives

Mengjun Chen, Oladele A. Ogunseitan

Journal Article

Investigation of electrochemical degradation and application of e-paper dyes in organic solvents

Luhai LI, Ming WANG, Yi FANG, Shunan QIAO

Journal Article