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Xin ZOU, Maoqiong GONG, Gaofei CHEN, Zhaohu SUN, Jianfeng WU
《能源前沿(英文)》 2010年 第4卷 第4期 页码 527-534 doi: 10.1007/s11708-010-0109-7
Optimization of cellulase production using
Saravanan P, Muthuvelayudham R, Rajesh Kannan R, Viruthagiri T
《化学科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 443-452 doi: 10.1007/s11705-012-1225-1
关键词:
cellulase
pineapple waste
Opinion: Agriculture Green Development
John R. PORTER
《农业科学与工程前沿(英文)》 2020年 第7卷 第1期 页码 117-119 doi: 10.15302/J-FASE-2019315
Design concepts of an aircraft wing: composite and morphing airfoil with auxetic structures
P R BUDARAPU,Sudhir Sastry Y B,R NATARAJAN
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 394-408 doi: 10.1007/s11709-016-0352-z
关键词: wing design aerodynamic loads morphing airfoil auxetic structures negative Poisson’s ratio
A photolysis coefficient for characterizing the response of aqueous constituents to photolysis
David R. HOKANSON,Ke LI,R. Rhodes TRUSSELL
《环境科学与工程前沿(英文)》 2016年 第10卷 第3期 页码 428-437 doi: 10.1007/s11783-015-0780-3
关键词: UV photolysis disinfection advanced oxidation N-nitrosodimethylamine quantum yield absorption coefficient
ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment
SENDIL KUMAR,R. ELANSEZHIAN
《机械工程前沿(英文)》 2014年 第9卷 第1期 页码 75-80 doi: 10.1007/s11465-014-0285-y
In this paper the reliability and performance of a vapour compression refrigeration system with ZnO nanoparticles in the working fluid was investigated experimentally. Nanorefrigerant was synthesized on the basis of the concept of the nanofluids, which was prepared by mixing ZnO nanoparticles with R152a refrigerant. The conventional refrigerant R134a has a global warming potential (GWP) of 1300 whereas R152a has a significant reduced value of GWP of 140 only. An experimental test rig is designed and fabricated indigenously in the laboratory to carry out the investigations. ZnO nanoparticles with refrigerant mixture were used in HFC R152a refrigeration system. The system performance with nanoparticles was then investigated. The concentration 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 R152a was charged and tests were conducted. The compressor suction pressure, discharge pressure and evaporator temperature were measured. The results indicated that ZnO nanorefrigerant works normally and safely in the system. The ZnO nanoparticle concentration is an important factor considered for heat transfer enhancement in the refrigeration system. The performance of the system was significantly improved with 21% less energy consumption when 0.5%v ZnO-R152a refrigerant. Both the suction pressure and discharge pressure were lowered by 10.5% when nanorefrigerant was used. The evaporator temperature was reduced by 6% with the use of nanorefrigerant. Hence ZnO nanoparticles could be used in refrigeration system to considerably reduce energy consumption. The usage of R152a with zero ozone depleting potential (ODP) and very less GWP and thus provides a green and clean environment. The complete experimental results and their analysis are reported in the main paper.
关键词: ZnO nanorefrigerant reduced GWP COP pressure ratio green energy
WANG, R.Z. WANG
《能源前沿(英文)》 2017年 第11卷 第4期 页码 493-502 doi: 10.1007/s11708-017-0510-6
关键词: multi-stage compression high temperature heat pump heat recovery exergy destruction R1234ze(Z) working fluid
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
《环境科学与工程前沿(英文)》 2017年 第11卷 第5期 doi: 10.1007/s11783-017-1000-0
关键词: Recycling Waste of electrical and electronic equipment (WEEE) Material flow analysis LCD TVs Precious metals Plastics
Evaluating R&D efficiency of China’s listed lithium battery enterprises
《工程管理前沿(英文)》 页码 473-485 doi: 10.1007/s42524-022-0213-5
关键词: Data Envelopment Analysis R&D investment efficiency China’s listed lithium battery enterprises technical efficiency pure technical efficiency scale efficiency
R. AKBARI,D. D. GANJI,M. NIMAFAR,A. R. AHMADI
《机械工程前沿(英文)》 2014年 第9卷 第4期 页码 390-401 doi: 10.1007/s11465-014-0313-y
In this paper, we aim to promote the capability of solving two complicated nonlinear differential equations: 1) Static analysis of the structure with variable cross section areas and materials with slope-deflection method; 2) the problem of one dimensional heat transfer with a logarithmic various surface A(x) and a logarithmic various heat generation G(x) with a simple and innovative approach entitled “Akbari-Ganji’s method” (AGM). Comparisons are made between AGM and numerical method, the results of which reveal that this method is very effective and simple and can be applied for other nonlinear problems. It is significant that there are some valuable advantages in this method and also most of the differential equations sets can be answered in this manner while in other methods there is no guarantee to obtain the good results up to now. Brief excellences of this method compared to other approaches are as follows: 1) Differential equations can be solved directly by this method; 2) without any dimensionless procedure, equation(s) can be solved; 3) it is not necessary to convert variables into new ones. According to the aforementioned assertions which are proved in this case study, the process of solving nonlinear equation(s) is very easy and convenient in comparison to other methods.
关键词: AGM extended surface heat transfer slope-deflection method
Strategies to reduce nutrient pollution from manure management in China
David R. CHADWICK, John R.
《农业科学与工程前沿(英文)》 2020年 第7卷 第1期 页码 45-55 doi: 10.15302/J-FASE-2019293
As the demand for livestock products continues to increase in China, so too does the challenge of managing increasing quantities of manure. Urgent action is needed to control point source (housing, storage and processing) and diffuse (field application) pollution and improve the utilization of manure nutrients and organic matter. Here, we review strategies to improve management at each stage of the manure management chain and at different scales. Many strategies require infrastructure investment, e.g., for containment of all manure fractions. Engineering solutions are needed to develop advanced composting systems with lower environmental footprints and design more efficient nutrient stripping technologies. At the field-scale, there is an urgent need to develop a manure nutrient recommendation system that accounts for the range of manure types, cropping systems, soils and climates throughout China. At the regional scale, coordinated planning is necessary to promote recoupling of livestock and cropping systems, and reduce nutrient accumulation in regions with little available landbank, while minimizing the risk of pollution swapping from one region to another. A range of stakeholders are needed to support the step change and innovation required to improve manure management, reduce reliance on inorganic fertilizers, and generate new business opportunities.
关键词: cropping farms livestock production manure management chain recoupling nutrient loss
Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves
R. BIJWE,A. R. ABHYANKAR
《能源前沿(英文)》 2016年 第10卷 第4期 页码 409-423 doi: 10.1007/s11708-016-0431-9
关键词: demand-side reserves dynamic reserve activation approach hydro power units post contingency sequential reserve activation approach spinning reserves
细菌耐药性威胁人类健康 Editorial
沈建忠, Timothy R. Walsh
《工程(英文)》 2022年 第15卷 第8期 页码 1-2 doi: 10.1016/j.eng.2022.06.003
R. BANAN, Mo. R. BANAN, S. FARHADI
《结构与土木工程前沿(英文)》 2018年 第12卷 第1期 页码 3-15 doi: 10.1007/s11709-017-0418-6
关键词: RC wall hysteretic measures RC wall design parameters empirical relations numerical simulations RC rectangular wall plastic hinge
标题 作者 时间 类型 操作
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
期刊论文
Optimization of cellulase production using
Saravanan P, Muthuvelayudham R, Rajesh Kannan R, Viruthagiri T
期刊论文
Design concepts of an aircraft wing: composite and morphing airfoil with auxetic structures
P R BUDARAPU,Sudhir Sastry Y B,R NATARAJAN
期刊论文
A photolysis coefficient for characterizing the response of aqueous constituents to photolysis
David R. HOKANSON,Ke LI,R. Rhodes TRUSSELL
期刊论文
ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment
SENDIL KUMAR,R. ELANSEZHIAN
期刊论文
Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression
WANG, R.Z. WANG
期刊论文
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
期刊论文
Significant progress in solution of nonlinear equations at displacement of structure and heat transfer extended surface by new AGM approach
R. AKBARI,D. D. GANJI,M. NIMAFAR,A. R. AHMADI
期刊论文
Strategies to reduce nutrient pollution from manure management in China
David R. CHADWICK, John R.
期刊论文
Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves
R. BIJWE,A. R. ABHYANKAR
期刊论文