Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 497

Conference Videos 27

Year

2024 1

2023 49

2022 52

2021 44

2020 50

2019 25

2018 28

2017 26

2016 26

2015 18

2014 14

2013 24

2012 16

2011 21

2010 16

2009 20

2008 18

2007 30

2006 7

2005 4

open ︾

Keywords

synthesis 15

digital image correlation 7

digital twin 5

1 4

fluorescence 4

2 3

Adsorption 3

induction motor 3

meta-synthesis management 3

Synthesis 2

additive manufacturing 2

antifungal activity 2

applications 2

artificial intelligence 2

benefit maximization 2

biomass 2

characterization 2

combustion 2

conversion 2

open ︾

Search scope:

排序： Display mode:

An Effective Method for Improving Silicon Micro-resonator System Performance

Xia Dunzhu,Wang Shourong,Zhou Bailing

Strategic Study of CAE 2006, Volume 8, Issue 10, Pages 71-74

Abstract: Its two step working flows for roughness and fineness searching and digital interface technology were

Keywords： direct digital synthesis (DDS) silicon micro-resonator AD9954 digital signal processing

HTML PDF Collect

Research on direct digital process of inductance sensor

WANG Xuan-ze, YANG Lian-gen, ZHONG Yu-ning

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3, Pages 317-322 doi: 10.1007/s11465-006-0023-1

Abstract: Simulation computation shows the corresponding digital curves.

Keywords： traditional corresponding phase-displacement Amplitude-displacement characteristic

HTML PDF Collect

Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 461-471 doi: 10.1007/s11705-010-0517-6

Abstract: The recent studies of direct alcohol/ether synthesis process in slurry reactors were reviewed, and theresearch work in our laboratory was carried out in this paper. a global kinetics model for direct dimethylether (DME) synthesis from syngas over a novel Cu-Zn-Al-Zr slurry catalyst was established accordingThe optimal operating conditions for DME synthesis process were obtained: reaction temperature at 240

Keywords： syngas alcohol/ether fuel slurry catalyst bubble column slurry reactor global kinetics mathematical model

HTML PDF Collect

Direct synthesis of dimethyl carbonate over rare earth oxide supported catalyst

JIANG Qi, CHENG Jiye, GAO Zhiqin

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 300-303 doi: 10.1007/s11705-007-0055-z

Abstract: Solid base catalysts for the direct synthesis of dimethyl carbonate (DMC) from carbon dioxide, methanol

Keywords： thermogravimetric analysis increase KCl-KCO/NdO catalytic KCl-KCO/YO

HTML PDF Collect

Direct synthesis of carbon nanotubes on fly ash particles to produce carbon nanotubes/fly ash composites

Fangxian LI, Cheng ZHOU, Pengfei YANG, Beihan WANG, Jie HU, Jiangxiong WEI, Qijun YU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6, Pages 1405-1414 doi: 10.1007/s11709-019-0564-0

Abstract: Fly ash was used as catalytic support for carbon nanotubes (CNTs) growth by chemical vapor deposition (CVD) due to having ideal compositions (SiO , Al O , and Fe O ). In this paper, CNTs were synthesized on Ni catalyst/fly ash substrate using CVD method. The influence of parameters (e.g., reaction temperature and gas flow rate) on the carbon yield and structure of the resulting CNTs was on the carbon yield and structure of the resulting CNTs was investigated by thermo-gravimetric analyses, Scanning electron microscopy, and Raman spectroscopy analysis. The results indicated that the growth temperature controlling had a significant effect on the diameter of CNTs. And the proper acetylene and hydrogen flow rate would decrease in defect density and increase in yield of as-grown CNTs on fly ash. Finally, the amorphous carbon on the surface of as-grown CNTs were removed by heating in air. Experimental results showed that the hydrophobic of the annealed CNTs was weak due to introducing functional groups to the surface of CNTs.

Keywords： carbon nanotubes fly ash chemical vapor deposition parameters purification

HTML PDF Collect

A platform of digital brain using crowd power Article

Dongrong XU, Fei DAI, Yue LU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 1, Pages 78-90 doi: 10.1631/FITEE.1700800

Abstract: A powerful platform of digital brain is proposed using crowd wisdom for brain research, based on thecomputational artificial intelligence model of synthesis reasoning and multi-source analogical generating

Keywords： Artificial intelligence Digital brain Synthesis reasoning Multi-source analogical generating Crowd wisdom

HTML PDF Collect

Direct synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substituted

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1, Pages 59-64 doi: 10.1007/s11705-007-0012-x

Abstract: Active component Pd was loaded on various perovskite supports for synthesis of diphenyl carbonate.

Keywords： photoelectron spectroscopy diphenyl carbonate proportion diffraction perovskite

HTML PDF Collect

Synthesis and characterization of magnesium hydroxide by batch reaction crystallization

Xingfu SONG, Shuying SUN, Dengke ZHANG, Jin WANG, Jianguo YU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4, Pages 416-421 doi: 10.1007/s11705-011-1125-9

Abstract: Magnesium hydroxide with high purity and uniform particle size distribution was synthesized by the directThe effects of synthesis conditions on the particle size distribution and water content (filtration cakeThis simple and mild synthesis method was promising to be scaled up for the industrial production of

Keywords： magnesium hydroxide direct precipitation method industrial crystallization particle size distribution

HTML PDF Collect

A study on the catalytic performance of Pd/γ-Al

Ruizhi CHU, Xianyong WEI, Zhimin ZONG, Wenjia ZHAO

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 452-456 doi: 10.1007/s11705-010-0522-9

Abstract: The catalysts were used for direct synthesis of dimethylether (DME) from syngas.calcination under microwave irradiation improved both the activity and selectivity of the catalysts for DME synthesis

Keywords： Pd/γ-Al₂O₃ direct synthesis dimethyl ether calcination under microwave irradiation

HTML PDF Collect

Additive direct-write microfabrication for MEMS: A review

Kwok Siong TEH

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4, Pages 490-509 doi: 10.1007/s11465-017-0484-4

Abstract:

Direct-write additive manufacturing refers to a rich and growing repertoire of well-established fabricationAt the macroscale, direct-write techniques such as stereolithography, selective laser sintering, fusedThe technological premises of all direct-write additive manufacturing are identical—convertingWhile still at its infancy, direct-write additive manufacturing techniques at the microscale have theWith current direct-write additive manufacturing technologies, it is possible to fabricate unsophisticated

Keywords： direct-write additive manufacturing microfabrication MEMS

HTML PDF Collect

Regulation of radicals by hydrogen-donor solvent in direct coal liquefaction

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12, Pages 1689-1699 doi: 10.1007/s11705-022-2186-7

Abstract: Radicals are important intermediates in direct coal liquefaction.

Keywords： direct coal liquefaction hydrogen-donor solvent induced pyrolysis radical mechanism density functional

HTML PDF Collect

Direct acting antiviral-induced dynamic reduction of serum

Tung Huynh, Ke-Qin Hu

Frontiers of Medicine 2019, Volume 13, Issue 6, Pages 658-666 doi: 10.1007/s11684-019-0707-7

Abstract: Direct acting antiviral (DAA) treatments may reduce the elevated α fetoprotein (AFP), but data on how

Keywords： chronic hepatitis C α fetoprotein direct acting antiviral treatment cirrhosis

HTML PDF Collect

Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 344-350 doi: 10.1007/s11465-016-0406-x

Abstract:

Researchers have investigated direct drive valve for many years to solve problems, such as fluid forceThis paper studied the high frequency double-servo direct drive rotary valve (DDRV), and proposed a novel

Keywords： direct drive rotary valve computational fluid dynamics (CFD) flow regulation

HTML PDF Collect

Platform governance in the era of AI and the digital economy

Frontiers of Engineering Management 2023, Volume 10, Issue 1, Pages 177-182 doi: 10.1007/s42524-022-0241-1

Abstract: . {{custom_ra.content}} . . . {{article.highlightEn}} . . . {{article.abstractEn}} . . . {{article.authorSummayEn}} .

HTML PDF Collect

Direct energy rebound effect for road transportation in China

Frontiers of Engineering Management Pages 597-611 doi: 10.1007/s42524-023-0276-y

Abstract: The enhancement of energy efficiency stands as the principal avenue for attaining energy conservation and emissions reduction objectives within the realm of road transportation. Nevertheless, it is imperative to acknowledge that these objectives may, in part or in entirety, be offset by the phenomenon known as the energy rebound effect (ERE). To quantify the long-term EREs and short-term EREs specific to China’s road transportation, this study employed panel cointegration and panel error correction models, accounting for asymmetric price effects. The findings reveal the following: The long-term EREs observed in road passenger transportation and road freight transportation range from 13% to 25% and 14% to 48%, respectively; in contrast, the short-term EREs in road passenger transportation and road freight transportation span from 36% to 41% and 3.9% to 32%, respectively. It is noteworthy that the EREs associated with road passenger transportation and road freight transportation represent a partial rebound effect, falling short of reaching the magnitude of a counterproductive backfire effect. This leads to the inference that the upsurge in energy consumption within the road transportation sector cannot be solely attributed to advancements in energy efficiency. Instead, various factors, including income levels, the scale of commodity trade, and industrial structure, exert more substantial facilitating influences. Furthermore, the escalation of fuel prices fails to dampen the demand for energy services, whether in the domain of road passenger transportation or road freight transportation. In light of these conclusions, recommendations are proffered for the formulation of energy efficiency policies pertinent to road transportation.

Keywords： road transportation direct energy rebound effect asymmetric price effects panel data model