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Journal Article 8

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ignition characteristics 2

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Continuous-time scheduling model 1

EVAL 1

Global optimization 1

NO_x formation 1

Nonlinear gasoline blending 1

PVP 1

Piecewise linear relaxations 1

Portland cement 1

amphiphilic copolymers 1

anti-fouling 1

blend membrane 1

blend modification 1

blend porous membrane 1

blend ratio 1

char burnout 1

diesel engine 1

diesel-biodiesel-DEE blend 1

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Modeling of unconfined compressive strength of soil-RAP blend stabilized with Portland cement using multivariate

Ali Reza GHANIZADEH, Morteza RAHROVAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4, Pages 787-799 doi: 10.1007/s11709-019-0516-8

Abstract: to develop a mathematical model for predicting the unconfined compressive strength (UCS) of soil-RAP blendThe results demonstrate that MARS has a great ability for prediction of the UCS in case of soil-RAP blend

Keywords： full-depth reclamation soil-reclaimed asphalt pavement blend Portland cement unconfined compressive strength

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Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverized

Yonghong YAN, Liutao SUN, Zhengkang PENG, Hongliang QI, Li LIU, Rui SUN

Frontiers in Energy 2021, Volume 15, Issue 1, Pages 78-90 doi: 10.1007/s11708-020-0678-z

Abstract: The effects of blend ratio on combustion and pollution emission characteristics for co-combustion ofAbove the 30% blend ratio, the increase in blend ratio postpones ignition in the primary stage and lowersWith the blend ratio increasing, NO emission at the furnace exit is smallest for the 30% blend ratioratio of semi-char is less than 45%, and carbon burnout changed a little at all blend ratios.So, an SC blend ratio of no more than 45% can be suitable for the burning of semi-char.

Keywords： pulverized-coal combustion pyrolyzed semi-char ignition characteristics pollution emission char burnout blend

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Preparation of polyvinylpyrrolidone / poly(ethylene-co-vinyl alcohol) blend membranes and the oil/water

Bai Yunxiang,Wu Guoliang,Zhang Chunfang,Gu Jin,Sun Yuping

Strategic Study of CAE 2014, Volume 16, Issue 7, Pages 79-83

Abstract:

PVP/EVAL blend membranes was prepared by blending of PVP with poly(ethylene-co-vinylThe chemical structure, morphology, mechanical performance and hydrophilicity of PVP/EVAL blend membranesThe tensile strength and elongation at break of PVP/EVAL blend membrane with 10 wt% (the mass percentWhen the content of PVP increased to 4 wt%, oil/water emulsion flux of PVP/EVAL blend membrane were 1.81

Keywords： PVP EVAL blend membrane oil/water separation immersion precipitation

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Uncovering the effect of poly(ethylene-co-vinyl alcohol) molecular weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic and formation hydrodynamic behavior

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1484-1502 doi: 10.1007/s11705-023-2331-y

Abstract: Various hydrophilic poly(ethylene-co-vinyl alcohol) (EVOH) were used herein to precisely control the structure and hydrodynamic properties of polysulfone (PSF) membranes. Particularly, to prepare pristine PSF and PSF/EVOH blends with increasing vinyl alcohol (VOH: 73%, 68%, 56%), the non-solvent-induced phase separation (NIPS) technique was used. Polyethylene glycol was used as a compatibilizer and as a porogen in N,N-dimethylacetamide. Rheological and ultrasonic separation kinetic measurements were also carried out to develop an ultrafiltration membrane mechanism. The extracted membrane properties and filtration capabilities were systematically compared to the proposed mechanism. Accordingly, the addition of EVOH led to an increase in the rheology of the dopes. The resulting membranes exhibited a microporous structure, while the finger-like structures became more evident with increasing VOH content. The PSF/EVOH behavior was changed from immediate to delayed segregation due to a change in the hydrodynamic kinetics. Interestingly, the PSF/EVOH32 membranes showed high hydrophilicity and achieved a pure water permeability of 264 L·m^–2·h^–1·bar^–1, which was higher than that of pure PSF membranes (171 L·m^–2·h^–1·bar^–1). In addition, PSF/EVOH32 rejected bovine serum albumin at a high rate (> 90%) and achieved a significant restoration of permeability. Finally, from the thermodynamic and hydrodynamic results, valuable insights into the selection of hydrophilic copolymers were provided to tailor the membrane structure while improving both the permeability and antifouling performance.

Keywords： polysulfone blend modification ultrafiltration membrane formation hydrodynamics poly(ethylene-co-vinyl

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Combustion and emission characteristics of a turbo-charged common rail diesel engine fuelled with diesel-biodiesel-DEE blends

Ni ZHANG, Zuohua HUANG, Xiangang WANG, Bin ZHENG

Frontiers in Energy 2011, Volume 5, Issue 1, Pages 104-114 doi: 10.1007/s11708-011-0138-x

Abstract: The combustion and emission characteristics of a turbo-charged, common rail diesel engine fuelled with diesel-biodiesel-DEE blends were investigated. The study reports that the brake-specific fuel consumption of diesel-biodiesel-DEE blends increases with increase of oxygenated fuel fractions in the blends. Brake thermal efficiency shows little variation when operating on different diesel-biodiesel-DEE blends. At a low load, the NO emission of the diesel-biodiesel-DEE blends exhibits little variation in comparison with the biodiesel fraction. The NO emission slightly increases with increase in the biodiesel fraction in diesel-biodiesel-DEE blends at medium load. However, the NO emission increases remarkably with increase of the biodiesel fraction at high load. Particle mass concentration decreases significantly with increase of the oxygenated-fuels fraction at all engine speeds and loads; particle number concentration decreases remarkably with increase of the oxygenated-fuels fraction. HC and CO emissions decrease with increasing oxygenated-fuels fraction in these blends.

Keywords： Combustion particulate emissions diesel-biodiesel-DEE blend diesel engine

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Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Frontiers in Energy 2021, Volume 15, Issue 2, Pages 431-448 doi: 10.1007/s11708-021-0726-3

Abstract: To improve the ignition behavior and to reduce the high NO emissions of blended pulverized fuels (PF) of semicoke (SC), large-scale experiments were conducted in a 300 kW fired furnace at various nozzle settings, i.e., ratios (denoted by / ) of the height of the rectangular burner nozzle to its width of 1.65, 2.32, and 3.22. The combustion tests indicate that the flame stability, ignition performance, and fuel burnout ratio were significantly improved at a nozzle setting of / = 2.32. The smaller / delayed ignition and caused the flame to concentrate excessively on the axis of the furnace, while the larger / easily caused the deflection of the pulverized coal flame, and a high-temperature flame zone emerged close to the furnace wall. NO emissions at the outlet of the primary zone decreased from 447 to 354 mg/m (O = 6%), and the ignition distance decreased from 420 to 246 mm when the / varied from 1.65 to 3.22. Furthermore, the ratio (denoted by / ) of the strong reduction zone area to the combustion reaction zone area was defined experimentally by the CO concentration to evaluate the reduction zone. The / rose monotonously, but its restraining effects on NO formation decreased as / increased. The results suggested that in a test furnace, regulating the nozzle / conditions sharply reduces NO emissions and improves the combustion efficiency of SC blends possessing an appropriate jet rigidity.

Keywords： burner nozzle height to width ratio ignition characteristics pyrolyzed semicoke (SC) and bituminous blend

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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 model includes blend recipe optimization, the distribution problem, and several important operational

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

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Fundamental and application of amphiphilic copolymers in high performance MF/UF membranes

Zhu Baoku,Cui Yue,Wang Jun,Wang Nachuan, Yao Zhikan,Zhu Liping

Strategic Study of CAE 2014, Volume 16, Issue 12, Pages 87-93

Abstract: ultrafiltration (MF/UF) membranes with lower production cost， the amphiphilic copolymers and their corresponding blendand hydrophobic components prevented the loss of amphiphilic copolymers in real application of the blendBased on the fundamental in structures and properties of the blend membranes， large-scale preparationof amphiphilic polymers and corresponding MF/UF blend membranes were achieved.The produced blend microporous membranes have been widely used in various areas including water purification

Keywords： amphiphilic copolymers blend porous membrane surface enrichment hydrophilicity anti-fouling