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Hot deformation behavior of a novel bimetal consisting of BTW1 and Q345R characterized by processing

Pengtao LIU, Lifeng MA, Weitao JIA, Tao WANG, Guanghui ZHAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 489-495 doi: 10.1007/s11465-019-0554-x

Abstract: Only a few studies have been conducted on the flow behavior of the novel BTW1/Q345R bimetal, which isIn this work, compression tests were conducted on BTW1/Q345R bimetal at a temperature range of 950 °CThe computed apparent activation energy of the BTW1/Q345R bimetal was 360 kJ/mol, and processing mapsrelationship revealed that work hardening exerted a dominant effect on the thermal deformation of the BTW1/Q345RResults showed that thermal deformation of the BTW1/Q345R bimetal should proceed when the temperature

Keywords： BTW1/Q345R bimetal     constitutive equation     processing map     work hardening    

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PAK1 is a novel cardiac protective signaling molecule

Yunbo Ke,Xin Wang,Xu Yu Jin,R. John Solaro,Ming Lei

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 399-403 doi: 10.1007/s11684-014-0380-9

Abstract:

We review here the novel cardiac protective effects of the multifunctional enzyme, p21-activated kinase

Keywords： p21-activated kinase 1 (PAK1)     heart    

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R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Frontiers of Medicine 2022, Volume 16, Issue 6,   Pages 932-945 doi: 10.1007/s11684-022-0963-9

Abstract: The prediction of mutant protein showed that p.R158Q and p.G212S could alter protein’s three-dimensionalMeanwhile, we conducted a compound heterozygous model—Ncc R156Q/G210S mice corresponding to human NCCR158Q/G212S.The hydrochlorothiazide test showed a loss of function of mutant Ncc in NccR156Q/G210S miceThese findings indicated that R158Q and G212S variants of SLC12A3 were pathogenic variants of

Keywords： Gitelman syndrome     mouse model     compound heterozygous     hypokalemia     Slc12a3    

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Novel perspective for urban water resource management:

Lijie Zhou, Hongwu Wang, Zhiqiang Zhang, Jian Zhang, Hongbin Chen, Xuejun Bi, Xiaohu Dai, Siqing Xia, Lisa Alvarez-Cohen, Bruce E. Rittmann

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1308-z

Abstract: Abstract • 5R (Recover, Reduce, Recycle, Resource and Reuse) approaches to manage urban water. • 5RAdditionally, urban water system needs a novel perspective for upgradation with urbanization.This perspective presents a novel 5R approach for managing urban water resources: Recover (storm waterThis paper has briefly demonstrated each R of 5R generation for water treatment and reuse.China has the chance to upgrade its urban water systems according to 5R principles.

Keywords： 5R generation     Recover     Reduce     Recycle     Resource     Reuse    

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Optimal Constructing Measures of Novel Research and Development Institutions in Life Sciences and Medicine

Hu Zhimin,Jia Xiaofeng,Yang Juntao,Qi Jianwei,Hao Sha,Xue Xiaojuan,Cheng Tao,Zhang Boli,Liu Depei

Strategic Study of CAE 2023, Volume 25, Issue 5,   Pages 64-71 doi: 10.15302/J-SSCAE-2023.05.006

Abstract:

Novel research and development (R&D) institutions are an importantNovel R&D institutions in life sciences and medicine are oriented toward people’s life andR&D institutions in China, analyzed the construction modes and operation mechanisms of similar R&D institutions abroad, and presented challenges in the development of novel R&D institutionsOn this basis, we proposed the following strategies for optimizing the construction of novel R&D

Keywords： life science     medicine     novel R&D institutions     construction strategy     scientific and technological innovation    

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Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal

Xin ZOU, Maoqiong GONG, Gaofei CHEN, Zhaohu SUN, Jianfeng WU

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 527-534 doi: 10.1007/s11708-010-0109-7

Abstract: An experimental study on the saturated flow boiling heat transfer for a binary mixture of R290/R152aThe result shows that the total mean deviation is 10.41% for R290/R152a mixtures, with 97.6% of the predictions

Keywords： flow boiling     heat transfer     binary mixture     R290/R152a    

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Optimization of cellulase production using

Saravanan P, Muthuvelayudham R, Rajesh Kannan R, Viruthagiri T

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 443-452 doi: 10.1007/s11705-012-1225-1

Abstract: The potential of for cellulase production using pineapple waste as substrate has been investigated. A maximum cellulase activity of 9.23 U/mL is obtained under the optimum experimental conditions: pH (5.5), temperature (37.5°C), initial substrate concentration (3%), inoculum concentration (6.6 × 10 ?CFU/mL), and culture time (6 days). Box-Behnken design (BBD) statistical tool and genetic algorithm (GA) are used to optimize the process parameters. The BBD study of linear and quadratic interactive effects of experimental variables on the desired response of cellulase activity showed that the second order polynomial is significant ( = 0.9414). The experimental cellulase activity under the optimal conditions identified by the BBD is 9.23 U/mL and that by GA is 6.98 U/mL. This result indicates that the BBD model gives better result than GA in the present case.

Keywords： cellulase     pineapple waste     Trichoderma reesei     Box-Behnken design     genetic algorithm    

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Opinion: Agriculture Green Development

John R. PORTER

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 1,   Pages 117-119 doi: 10.15302/J-FASE-2019315

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Design concepts of an aircraft wing: composite and morphing airfoil with auxetic structures

P R BUDARAPU,Sudhir Sastry Y B,R NATARAJAN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 394-408 doi: 10.1007/s11709-016-0352-z

Abstract: This paper is categorized into two parts. (1) A frame work to design the aircraft wing structure and (2) analysis of a morphing airfoil with auxetic structure. The developed design frame work in the first part is used to arrive at the sizes of the various components of an aircraft wing structure. The strength based design is adopted, where the design loads are extracted from the aerodynamic loads. The aerodynamic loads acting on a wing structure are converted to equivalent distributed loads, which are further converted point loads to arrive at the shear forces, bending and twisting moments along the wing span. Based on the estimated shear forces, bending and twisting moments, the strength based design is employed to estimate the sizes of various sections of a composite wing structure. A three dimensional numerical model of the composite wing structure has been developed and analyzed for the extreme load conditions. Glass fiber reinforced plastic material is used in the numerical analysis. The estimated natural frequencies are observed to be in the acceptable limits. Furthermore, the discussed design principles in the first part are extended to the design of a morphing airfoil with auxetic structure. The advantages of the morphing airfoil with auxetic structure are (i) larger displacement with limited straining of the components and (ii) unique deformation characteristics, which produce a theoretical in-plane Poisson’s ratio of −1. Aluminum Alloy AL6061-T651 is considered in the design of all the structural elements. The compliance characteristics of the airfoil are investigated through a numerical model. The numerical results are observed to be in close agreement with the experimental results in the literature.

Keywords： wing design     aerodynamic loads     morphing airfoil     auxetic structures     negative Poisson’s ratio    

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A photolysis coefficient for characterizing the response of aqueous constituents to photolysis

David R. HOKANSON,Ke LI,R. Rhodes TRUSSELL

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 428-437 doi: 10.1007/s11783-015-0780-3

Abstract: UV photolysis and UV based advanced oxidation processes (AOPs) are gaining more and more attention for drinking water treatment. Quantum yield ( ) and molar absorption coefficient ( ) are the two critical parameters measuring the effectiveness of photolysis of a compound. The product of the two was proposed as a fundamental measure of a constituent’s amenability to transformation by photolysis. It was shown that this product, named the photolysis coefficient, , can be determined using standard bench tests and captures the properties that govern a constituent’s transformation when exposed to light. The development showed the photolysis coefficient to be equally useful for microbiological, inorganic and organic constituents. Values of calculated by the authors based on quantum yield and molar absorption coefficient data from the literature were summarized. Photolysis coefficients among microorganisms ranged from 8500 to more than 600000 and are far higher than for inorganic and organic compounds, which varied over a range of approximately 10 to 1000 and are much less sensitive to UV photolysis than the microorganisms.

Keywords： UV photolysis     disinfection     advanced oxidation     N-nitrosodimethylamine     quantum yield     absorption coefficient    

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ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment

SENDIL KUMAR,R. ELANSEZHIAN

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 75-80 doi: 10.1007/s11465-014-0285-y

Abstract: on the basis of the concept of the nanofluids, which was prepared by mixing ZnO nanoparticles with R152aThe conventional refrigerant R134a has a global warming potential (GWP) of 1300 whereas R152a has a significantZnO nanoparticles with refrigerant mixture were used in HFC R152a refrigeration system.of nano ZnO ranges in the order of 0.1% v, 0.3% v and 0.5%v with particle size of 50 nm and 150 g of R152aThe usage of R152a with zero ozone depleting potential (ODP) and very less GWP and thus provides a green

Keywords： ZnO nanorefrigerant     reduced GWP     COP     pressure ratio green energy    

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Animal Nutrition and Feed Science

Adrian R. Egan

Engineering 2017, Volume 3, Issue 5,   Pages 586-587 doi: 10.1016/J.ENG.2017.05.025

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Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

WANG, R.Z. WANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 493-502 doi: 10.1007/s11708-017-0510-6

Abstract: approach and exergy analysis of multi-stage compression high temperature heat pump (HTHP) systems with R1234ze

Keywords： multi-stage compression     high temperature heat pump     heat recovery     exergy destruction     R1234ze(Z) working    

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Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-1000-0

Abstract: Waste of electrical and electronic equipment (WEEE) constitutes one of the most relevant waste streams because of the quantity and presence of valuable materials. However, there is limited knowledge on the resource potential of urban mining WEEE, as data on material composition, and the efficiency of current recycling treatments are still scarce. In this article, an evaluation of the recycling performance at a national level for one of the fastest growing e-waste streams: LCD TVs is carried out through the following four steps. Firstly, material characterisation is performed by means of sampling of the waste stream. Secondly, a material flow analysis is conducted by evaluating the separation performance of a recycling plant in Belgium. Thirdly, the recovered economic value and avoided environmental impact (EI) of the analysed recycling system is assessed. Finally, the potential of urban mining for Belgium is forecasted. The analysis shows that while recycling performance for ferrous metals and aluminium are relatively high; there is substantial room to better close the material loops for precious metals (PM) and plastics. PMs and plastics account for 66 % of the economic value in LCD TVs and 57% of the EI. With the current, commonly applied recycling technology only one-third of the PM and housing plastics are recycled; meaning that for these materials, at a national level for Belgium, there is a potential for improvement that represents 3.3 million euros in 2016 and 6.8 million euros in 2025.

Keywords： Recycling     Waste of electrical and electronic equipment (WEEE)     Material flow analysis     LCD TVs     Precious metals     Plastics    

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Evaluating R&D efficiency of China’s listed lithium battery enterprises

Frontiers of Engineering Management   Pages 473-485 doi: 10.1007/s42524-022-0213-5

Abstract: However, despite significant support on research and development (R&D) investments that have resultedTo guide future policies and understand proper ways of promoting R&D efficiency, we looked into the lithiumResults revealed little indication of a meaningful improvement in R&D efficiency throughout our sampleHowever, during this period, a significant increase in R&D expenditure was witnessed.rather, it should also encompass assisting businesses in developing efficient managerial processes for R&

Keywords： Data Envelopment Analysis     R&D investment efficiency     China’s listed lithium battery enterprises     technical    

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Title Author Date Type Operation

Hot deformation behavior of a novel bimetal consisting of BTW1 and Q345R characterized by processing

Pengtao LIU, Lifeng MA, Weitao JIA, Tao WANG, Guanghui ZHAO

Journal Article

PAK1 is a novel cardiac protective signaling molecule

Yunbo Ke,Xin Wang,Xu Yu Jin,R. John Solaro,Ming Lei

Journal Article

R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Journal Article

Novel perspective for urban water resource management:

Lijie Zhou, Hongwu Wang, Zhiqiang Zhang, Jian Zhang, Hongbin Chen, Xuejun Bi, Xiaohu Dai, Siqing Xia, Lisa Alvarez-Cohen, Bruce E. Rittmann

Journal Article

Optimal Constructing Measures of Novel Research and Development Institutions in Life Sciences and Medicine

Hu Zhimin,Jia Xiaofeng,Yang Juntao,Qi Jianwei,Hao Sha,Xue Xiaojuan,Cheng Tao,Zhang Boli,Liu Depei

Journal Article

Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal

Xin ZOU, Maoqiong GONG, Gaofei CHEN, Zhaohu SUN, Jianfeng WU

Journal Article

Optimization of cellulase production using

Saravanan P, Muthuvelayudham R, Rajesh Kannan R, Viruthagiri T

Journal Article

Opinion: Agriculture Green Development

John R. PORTER

Journal Article

Design concepts of an aircraft wing: composite and morphing airfoil with auxetic structures

P R BUDARAPU,Sudhir Sastry Y B,R NATARAJAN

Journal Article

A photolysis coefficient for characterizing the response of aqueous constituents to photolysis

David R. HOKANSON,Ke LI,R. Rhodes TRUSSELL

Journal Article

ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment

SENDIL KUMAR,R. ELANSEZHIAN

Journal Article

Animal Nutrition and Feed Science

Adrian R. Egan

Journal Article

Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

WANG, R.Z. WANG

Journal Article

Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Journal Article

Evaluating R&D efficiency of China’s listed lithium battery enterprises

Journal Article