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Faster Than Light and EM-Wave Anomalous Propagation

Huang Zhixun

Strategic Study of CAE 2000, Volume 2, Issue 10, Pages 80-92

Abstract:

In this paper, the historic background of the study on faster than light (FTL) and the possibility of working within the frame work of special relativity are discussed. The previous experimental studies with single photon, laser pulse and microwaves have revealed superluminal behavior in the quantum tunneling process. That phenomenon exists only in the case of special physical condition. The analogy between classical Telegraphist equation and Klein-gordon equation can be used to study particle tunneling and superluminal behavior. A discussion on the FTL experiment by Dr. L. Wang recently is included. Remarks on the future of FTL research is given in this article.

Keywords： faster than light microwave anomalous propagation tachyon quantum tunneling process e-vanescent mode

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Discovery for New Herbicide Sites of Action by Quantification of plant Primary Metabolite and Enzyme Pools Perspective

Franck E. Dayan, Stephen O. Duke

Engineering 2020, Volume 6, Issue 5, Pages 509-514 doi: 10.1016/j.eng.2020.03.004

Abstract: Some primary metabolism intermediates are phytotoxic (e.g., protoporphyrin IX and sphingoid bases), and

Keywords： Natural products Biorational discovery Mode of action Herbicide

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Frontiers in Energy 2020, Volume 14, Issue 4, Pages 836-849 doi: 10.1007/s11708-017-0444-z

Abstract: It describes a coupling of sliding mode direct torque control (DTC) with sliding mode flux and speedThis algorithm uses direct torque control basics and the sliding mode approach.The sliding mode controller is used to generate reference voltages in stationary frame and give themThe second aim of this paper is to design a sliding mode speed/flux observer which can improve the control

Keywords： induction motor direct torque control (DTC) space vector modulation (SVM) sliding mode control (SMC) sliding mode observer (SMO) dS1104

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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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Parallel Authentication Modes Based on Double Blocks or Key Counter

Huang Yuhua,Huai Aiqun,Song Yubo

Strategic Study of CAE 2004, Volume 6, Issue 7, Pages 70-74

Abstract:

The CBC - MAC mode is not a parallel one.The PKCB mode had a marked improvement on security & speed over parallel authentication mode, PMACAnd it may be combined with the CTR (counter) encryption mode to form a full block cipher mode.block cipher mode (2CTR)，too.The 2CTR mode had a performance advantage over the standard mode, CCM (CTR with CBC - MAC).

Keywords： authentication mode CBC - MAC mode PMAC mode CTR mode CCM mode

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Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Frontiers of Structural and Civil Engineering Pages 179-190 doi: 10.1007/s11709-022-0888-z

Abstract: plate were considered Gaussian random fields and their effects on the buckling load and corresponding modespatially varying stochastic properties on the critical load of the plate and the irregularity of buckling modethe plate properties as random fields, a significant stochastic irregularity is obtained in buckling mode

Keywords： uncertain composite plate stochastic assume mode method Karhunen−Loève theorem polynomial chaos approach plate buckling irregularity in buckling mode shapes

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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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Experimental investigation of evolutive mode-I and mode-II fracture behavior of fiber-reinforced cemented

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2, Pages 256-270 doi: 10.1007/s11709-022-0924-z

Abstract: temperature (20, 35, and 45 °C) and cement hydration at different curing times (3, 7, and 28 d) on the mode-Iand mode-II fracture behavior and properties of fiber-reinforced CPB is investigated.

Keywords： fiber reinforcement cemented paste backfill fracture behavior underground mine cement hydration

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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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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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Spent rechargeable lithium batteries in e-waste: composition and its implications

Xianlai ZENG,Jinhui LI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5, Pages 792-796 doi: 10.1007/s11783-014-0705-6

Abstract: The amount of spent rechargeable lithium batteries (RLBs) is growing rapidly owing to wide application of these batteries in portable electronic devices and electric vehicles, which obliges that spent RLBs should be handled properly. Identification of spent RLBs can supply fundamental information for spent RLBs recycling. This study aimed to determine the differences of physical components and chemical compositions among various spent RLBs. All the samplings of RLBs were rigorously dismantled and measured by an inductive coupled plasma atomic emission spectrometer. The results indicate that the average of total weight of the separator, the anode and the cathode accounted for over 60% of all the RLBs. The weight ratio of valuable metals ranged from 26% to 76%, and approximately 20% of total weight was Cu and Al. Moreover, no significant differences were found among different manufacturers, applications, and electrolyte types. And regarding portable electronic devices, there is also no significant difference in the Co-Li concentration ratios in the leaching liquid of RLBs.

Keywords： rechargeable lithium batteries e-waste physical components difference analysis recycling

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An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12, Pages 1653-1653 doi: 10.1007/s11709-019-0578-7

Abstract: However, the E-modulus and strength of such members at high service temperatures is still unknown.Thus, this paper proposes design methods for calculating the E-modulus and strength of FRP members atIt was found that the proposed design methods conservatively estimate the E-modulus and strength of FRP

Keywords： concrete fiber reinforced polymer E-modulus strength temperatures