Image Segmentation Based on Improved Adaptive Genetic Algorithm

Chen, Zu Jue; Fu, Xian Xiang; Zhou, Xiang

doi:10.4028/www.scientific.net/kem.464.151

Cited by 23 publications

(33 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[160][161][162] Aer modication, they become soluble in different solvents, as well as contain functional groups, which turn them into a multidisciplinary materials in other applications. The functionalization by chemical oxidation of CNTs is the most commonly used method, which breaks the sp 2 hybrid carbon bonds on the sidewalls, and attaches carboxyl/hydroxyl groups to the CNTs.…”

Section: 146-159mentioning

confidence: 99%

Recent advances in hydrophilic modification and performance of polyethersulfone (PES) membrane via additive blending

2018

View full text Add to dashboard Cite

The blending of additives in the polyethersulfone (PES) matrix is an important approach in the membrane industry to reduce membrane hydrophobicity and improve the performance (flux, solute rejection, and reduction of fouling). Several (hydrophilic) modifications of the PES membrane have been developed.Given the importance of the hydrophilic modification methods for PES membranes and their applications, we decided to dedicate this review solely to this topic. The types of additives embedded into the PES matrix can be divided into two main categories: (i) polymers and (ii) inorganic nanoparticles (NPs). The introduced polymers include polyvinylpyrrolidone, chitosan, polyamide, polyethylene oxide, and polyethylene glycol. The introduced nanoparticles discussed include titanium, iron, aluminum, silver, zirconium, silica, magnesium based NPs, carbon, and halloysite nanotubes. In addition, the applications of hydrophilic PES membranes are also reviewed. Reviewing the research progress in the hydrophilic modification of PES membranes is necessary and imperative to provide more insights for their future development and perhaps to open the door to extend their applications to other more challenging areas. IntroductionPolyethersulfone (PES) is a recognized polymeric material, which is widely employed in the fabrication of membranes for various applications. Due to its high glass transition temperature (225 C), and amorphous and transparent properties, PES possesses a high mechanical and hydrolytic stability, thermal and chemical resistance, and outstanding oxidative characteristics, 1 making it ideal for the preparation of asymmetric membranes with different surfaces and pore sizes. 1-3Asymmetric PES membranes are generally prepared via a phaseseparation method. The nal membrane properties and performance are inuenced by the composition (additives, View Article OnlineView Journal | View Issue concentration, and solvent), temperature of the doping solution, the non-solvent or the mixture of non-solvents, and the coagulation bath or the environment. 4 The risk of the fouling effect due to the high hydrophobicity of PES, especially in protein-contacting applications and aqueous ltrations, limits their wide applications.2,3 Numerous research studies have reported efforts to enhance the hydrophilicity of the PES membrane surface. 1,5Basically, the water contact angle (WCA) formed between the membrane-liquid boundary and liquid-gas tangent is generally employed to evaluate the hydrophilic properties of the membrane.6 Commercial PES membranes are hydrophobic in nature with high mechanical, chemical, and thermal stability. 7Usually, these membranes possesses high WCA values and are prone to solute adsorption from various feed streams. It has been well documented that membranes with hydrophilic surfaces are less prone to the fouling effect with microorganisms and organic substances due to: (i) a decreased interaction between the membrane surface and foulant, and (ii) no interaction of hydrogen bonds in the boundary layer betw...

show abstract

Section: 146-159mentioning

confidence: 99%

Recent advances in hydrophilic modification and performance of polyethersulfone (PES) membrane via additive blending

2018

View full text Add to dashboard Cite

show abstract

“…This solution was filtered through a PTFE membrane (0.2µm) and dried in a vacuum oven. In the second step, carboxylic acid groups were activated through refluxing with thionyl chloride with a catalytic quantity of N,N-dimethylformamide for 24 h. 21,25,26 The excess of thionyl chloride was removed by vapour distillation under reduced pressure. The product was washed with dichloromethane and dried in a vacuum oven.…”

Section: Functionalization Of Nanotubesmentioning

confidence: 99%

“…It is also known that different types of functionalization process lead to good dispersibility in organic solvents. 19,20,21 The objective of this research is the functionalization of MWCNT in order to incorporate in OPV cells, which is attractive to produce low-cost energy devices. Many research reports described that the carboxylic acid functionalized MWCNT (O-MWCNT) resulted in improved thin film deposition compared with pristine MWCNT and that enhanced the power conversion efficiency of OPV cells.…”

Section: Introductionmentioning

confidence: 99%

The incorporation of mono- and bi-functionalized multiwall carbon nanotubes in organic photovoltaic cells

Sadhu¹,

Nismy²,

Adikaari³

et al. 2011

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Instead of GO and the graphene as used in the previous work, this work focuses on using amine‐functionalized graphene nanoplatelets since they are water‐dispersible without the aid of surfactants, thus enabling facile fabrication of composite electrospun mats based on water‐soluble PVA. The amine group has high chemical reactivity and can readily react with other chemicals . It has also been reported that the amine group can enhance the dye adsorption of particular adsorbents under mild conditions (ca.…”

Section: Introductionmentioning

confidence: 99%

Crosslinking assisted fabrication of ultrafine poly(vinyl alcohol)/functionalized graphene electrospun nanofibers for crystal violet adsorption

Chailek

Daranarong

Punyodom

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article reports the fabrication of water-stable electrospun mats made from water-soluble poly(vinyl alcohol) and comprising ultrafine nanofibers for a high surface area to volume ratio as required for the adsorption of crystal violet. Acid-catalyzed crosslinking is uniquely demonstrated as a facile strategy to improve water stability and, just as importantly, fine-tune the nanofiber size of the electrospun mats. Amine-functionalized graphene nanoplatelets are incorporated as an adsorption performance enhancer instead of the more widely reported graphene oxide. The functionalized graphene also facilitates fabrication of the composite electrospun mats by direct mixing of the water-dispersible graphene with the aqueous polymer solution. The enhanced adsorption performance of the polymer nanocomposite mats is explained in detail at the molecular level, while the adsorption mechanism is supported by adsorption isotherm and related kinetic data. Moreover, the adsorbent mats can be removed from the water after use with the mat integrity still maintained.

show abstract

Image Segmentation Based on Improved Adaptive Genetic Algorithm

Cited by 23 publications

References 3 publications

Recent advances in hydrophilic modification and performance of polyethersulfone (PES) membrane via additive blending

Recent advances in hydrophilic modification and performance of polyethersulfone (PES) membrane via additive blending

The incorporation of mono- and bi-functionalized multiwall carbon nanotubes in organic photovoltaic cells

Crosslinking assisted fabrication of ultrafine poly(vinyl alcohol)/functionalized graphene electrospun nanofibers for crystal violet adsorption

Contact Info

Product

Resources

About