Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 10

Year

2022 2

2021 1

2020 1

2019 1

2018 3

2017 1

2016 1

open ︾

Keywords

Amphiphilic 1

Amphiphilic copolymer 1

Atomic transfer radical polymerization 1

Blended modification 1

Blending 1

Continuous-time scheduling model 1

Counter 1

Full adder 1

Global optimization 1

High flux 1

Hydrophilic 1

Image blending 1

Membrane modification 1

Multiplier 1

Nanoparticle 1

Nonlinear gasoline blending 1

Piecewise linear relaxations 1

Polyvinylidene fluoride ultrafiltration membrane 1

Three-dimensional layout 1

Transmission gate 1

open ︾

Search scope:

排序： Display mode:

Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 702-717 doi: 10.1007/s11705-019-1861-9

Abstract: The work studied a non-catalytic upgrading of fast pyrolysis bio-oil by blending under supercriticalnuclear magnetic resonance spectroscopy, and thermogravimetric analysis to evaluate the effects of blendingSimply blending crude bio-oil with isopropanol was effective in increasing the C and H content, reducing

Keywords： bio-oil blending supercritical upgrading characterisation

HTML PDF Collect

Improved blending strategy for membrane modification by virtue of surface segregation using surface-tailored

Shuai Liang, Peng Gao, Xiaoqi Gao, Kang Xiao, Xia Huang

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0875-5

Abstract: Blending with amphiphilic nanoparticles further enhances membrane hydrophilicity.Excessive silanization cause adverse effect on blending efficiency.Blending modification with nanoparticles (NPs), owing to the convenience of being incorporated in establishedHowever, the existing blending strategy suffers from a low utilization efficiency due to NP encasementThe current study proposed an improved blending modification approach with amphiphilic NPs (aNPs), which

Keywords： Membrane modification Nanoparticle Hydrophilic Amphiphilic Blending

HTML PDF Collect

Online gasoline blending with EPA Complex Model for predicting emissions

Stefan JANAQI, Mériam CHÈBRE, Guillaume PITOLLAT

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 214-226 doi: 10.15302/J-FEM-2017022

Abstract: The difficulty in implementing this model in the blending process stems from the implicit definition

Keywords： emissions reformulated gasoline online control global optimization

HTML PDF Collect

Extending blending proportions of ordinary Portland cement and calcium sulfoaluminate cement blends:

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1249-1260 doi: 10.1007/s11709-021-0770-4

Abstract: This study extended blending proportion range of ordinary Portland cement (OPC) and calcium sulfoaluminate

Keywords： calcium sulfoaluminate cement cement blends hydration reaction setting workability compressive strength

HTML PDF Collect

PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: Polyvinylidene fluoride grafted with poly(ethylene glycol) methyl ether methacrylate (PVDF-g-PEGMA) was synthesized using atomic transfer radical polymerization (ATRP) at different reaction times (9 h, 19 h, and 29 h). The corresponding conversion rates were 10%, 20% and 30%, respectively. PVDF was blended with the copolymer mixture containing PVDF-g-PEGMA, solvent and residual PEGMA under different reaction times. In this study, we explored the effect of the copolymer mixture additives with different synthesis times on cast membrane performance. Increasing the reaction time of PVDF-g-PEGMA causes more PVDF-g-PEGMA and less residual PEGMA to be found in the casting solution. Incremental PVDF-g-PEGMA can dramatically increase the viscosity of the casting solution. An overly high viscosity led to a delayed phase inversion, thus hindering PEGMA segments in PVDF-g-PEGMA from migrating to the membrane surface. However, more residual PEGMA contributed to helping more PEGMA segments migrate to the membrane surface. The pure water fluxes of the blended membrane with reaction times of 9 h, 19 h, and 29 h are 5445 L·m ·h , 1068 L·m ·h and 1179 L·m ·h , respectively, at 0.07 MPa. Delayed phase inversion can form smaller surface pore size distributions, thus decreasing the water flux for the membranes with PVDF-g-PEGMA at 19 h and 29 h. Therefore, we can control the membrane pore size distribution by decreasing the reaction time of PVDF-g-PEGMA to obtain a better flux performance. The membrane with PVDF-g-PEGMA at 19 h exhibits the best foulant rejection and cleaning recovery due to its narrow pore size distribution and high surface oxygen content.

Keywords： Polyvinylidene fluoride ultrafiltration membrane Amphiphilic copolymer Blended modification High flux Atomic transfer radical polymerization

HTML PDF Collect

Industrial Development of Hydrogen Blending in Natural Gas Pipelines in China

Zhong Bing, Zhang Xuexiu, Zhang Bo, Peng Suping

Strategic Study of CAE 2022, Volume 24, Issue 3, Pages 100-107 doi: 10.15302/J-SSCAE-2022.03.011

Abstract: Blending hydrogen in natural gas pipelines can improve the scale and efficiency of hydrogen distributionBased on defining the industrial chain of hydrogen blending in natural gas pipelines, the paper discussesthe values of developing the blending industry in terms of promoting the hydrogen industry, resolvingMoreover, the paper summarizes the international progress and domestic current status of the blendingIt unravels key issues regarding the hydrogen blending proportion, adaptability of pipes and terminal

Keywords： hydrogen blending in natural gas pipelines hydrogen transportation natural gas pipeline networks renewable

HTML PDF Collect

Power to gas: addressing renewable curtailment by converting to hydrogen

Xiaohe YAN, Xin ZHANG, Chenghong GU, Furong LI

Frontiers in Energy 2018, Volume 12, Issue 4, Pages 560-568 doi: 10.1007/s11708-018-0588-5

Abstract: Renewable energy is the key to meeting increasing electricity demand and the decarburization targets in the generation mix. However, due to constrained power network capacity, a large volume of renewable generation is curtailed particularly from wind power, which is a huge waste of resources. There are typically three approaches to addressing excessive renewable: direct curtailment, the reinforcement of networks to expand transfer capacity, and the conversion of excessive renewable into other energy types, such as hydrogen, to transport. The costs and benefits of the three approaches could vary significantly across location, time, and penetration of renewable energy. This paper conducts a cost-benefit analysis and comparison of the three techniques to address wind curtailment. It uses a reduced 16-busbar UK transmission network to analyze the performance of the three approaches. The UK 2020 generation mix is used to quantify the saved renewable energy and incurred costs. The payback time and net present value of the two investment techniques are compared. From demonstration, it is reasonable to conclude that converting excessive wind power into hydrogen to transport is an environmentally friendly and cost-effective way to address wind curtailment.

Keywords： blending hydrogen cost-benefit analysis electrolysis wind curtailment

HTML PDF Collect

Global Optimization of Nonlinear Blend-Scheduling Problems

Pedro A. Castillo Castillo Pedro M. Castro,Vladimir Mahalec

Engineering 2017, Volume 3, Issue 2, Pages 188-201 doi: 10.1016/J.ENG.2017.02.005

Abstract:

The scheduling of gasoline-blending operations is an important problem in the oil refining industrynature that is intrinsic to scheduling problems, but also non-convex nonlinear behavior, due to the blendingsolve a previously published continuous-time mixed-integer nonlinear scheduling model for gasoline blending

Keywords： Global optimization Nonlinear gasoline blending Continuous-time scheduling model Piecewise linear relaxations

HTML PDF Collect

A review on co-pyrolysis of coal and oil shale to produce coke

Xiangchun Liu, Ping Cui, Qiang Ling, Zhigang Zhao, Ruilun Xie

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4, Pages 504-512 doi: 10.1007/s11705-019-1850-z

Abstract: This review focuses on the potential utilization of oil shale (OS) as a feedstock for coal-blending cokingIf such OS is directly used for coal-blending coking, the coke product will not meet market demand.Finally, co-pyrolysis of different ranks of coals with OS in terms of coal-blending coking, where further

Keywords： coal oil shale co-pyrolysis coal blending coking coke

HTML PDF Collect

An efficient counter-based Wallace-tree multiplier with a hybrid full adder core for image blending Research Articles

Ayoub SADEGHI, Nabiollah SHIRI, Mahmood RAFIEE, Mahsa TAHGHIGH

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6, Pages 950-965 doi: 10.1631/FITEE.2100432

Abstract:

We present a new -based Wallace-tree (CBW) 8×8 . The ‍’‍s s are implemented with a new hybrid (FA) cell, which is based on the (TG) technique. The proposed FA, TG-based AND gate, and hybrid half adder (HA) generate :3 (4≤≤7) digital s with the ability to save at least 50% area occupation. Simulations by 90 nm technology prove the superiority of the proposed FA and digital s under different conditions over the state-of-the-art designs. By using the proposed cells, the CBW exhibits high driving capability, low power consumption, and high speed. The CBW has a 0.0147 mm die area in a pad. The post-layout extraction proves the accuracy of experimental implementation. An mechanism is proposed, in which a direct interface between MATLAB and HSPICE is used to evaluate the presented CBW in image processing applications. The peak signal-to-noise ratio (PSNR) and structural similarity index metric (SSIM) are calculated as image quality parameters, and the results confirm that the presented CBW can be used as an alternative to designs in the literature.

Keywords： Full adder Transmission gate Counter Multiplier Three-dimensional layout Image blending