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ultrafiltration membrane fouling behavior under different pH conditions: interface adhesion force and XDLVOtheory analysis

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0855-9

Abstract: XDLVO theory shows the polar or Lewis acid–base interaction plays a major role in membrane fouling.The extended Derjaguin–Landau–Verwey–Overbeek (XDLVO) theory predicts that the polar or Lewis acid–base

Keywords： PVDF membrane Membrane fouling Adhesion force Protein Interfacial free energy

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A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1729-6

Abstract:

● Fundamentals of membrane fouling are comprehensively reviewed.

Keywords： Membrane fouling Thermodynamic mechanism XDLVO theory Flory-Huggins theory Fouling migration

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Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1470-1483 doi: 10.1007/s11705-023-2329-5

Abstract: In this paper, graphene oxide quantum dots with amino groups (NH₂-GOQDs) were tailored to the surface of a thin-film composite (TFC) membrane surface for optimizing forward osmosis (FO) membrane performance using the amide coupling reaction. The results jointly demonstrated hydrophilicity and surface roughness of the membrane enhanced after grafting NH₂-GOQDs, leading to the optimized affinity and the contact area between the membrane and water molecules. Therefore, grafting of the membrane with a concentration of 100 ppm (TFC-100) exhibited excellent permeability performance (58.32 L·m^–2·h^–1) compared with TFC membrane (16.94 L·m^–2·h^–1). In the evaluation of static antibacterial properties of membranes, TFC-100 membrane destroyed the cell morphology of Escherichia coli (E. coli) and reduced the degree of bacterial adsorption. In the dynamic biofouling experiment, TFC-100 membrane showed a lower flux decline than TFC membrane. After the physical cleaning, the flux of TFC-100 membrane could recover to 96% of the initial flux, which was notably better than that of TFC membrane (63%). Additionally, the extended Derjaguin–Landau–Verwey–Overbeek analysis of the affinity between pollutants and membrane surface verified that NH₂-GOQDs alleviates E. coli contamination of membrane. This work highlights the potential applications of NH₂-GOQDs for optimizing permeability and biofouling mitigation of FO membranes.

Keywords： forward osmosis membrane graphene oxide quantum dots graft modification anti-fouling membrane XDLVOtheory

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Analysis of Theory of Architecture

Gu Mengchao

Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 100-102

Abstract:

Starting with the analysis of the definition and concept of the theoryof architecture, the framework of architectural theory and the filling theory innovation, the authorgives his understanding on the framework of architectural theory with Chinese characteristics.

Keywords： theory of architecture framework of architectural theory starting point and finishing point ofarchitecturaltheory innovation in architectural theory

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Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Frontiers in Energy 2019, Volume 13, Issue 3, Pages 522-538 doi: 10.1007/s11708-018-0562-2

Abstract: This paper proposes the use of a signal detection theory (SDT), fuzzy detection theory (FDT), and chi-square

Keywords： thermostats perceptions beliefs signal detection theory (SDT) fuzzy signal detection theory (FSDT) chi-square

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An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 1-8

Abstract: study the properties and the refining laws of the information resources and to establish a unified theory

Keywords： information theory knowledge theory intelligence theory cogmatics

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An application of game theory in distributed collaborative decision making

Angran XIAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1, Pages 85-101 doi: 10.1007/s11465-019-0523-4

Abstract: Hence, we postulate the use of principles from game theory to model the relationships between engineeringA product design and manufacturing scenario is introduced to demonstrate the efficacy of using game theory

Keywords： collaboration distributed product realization game theory digital interface

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Individualized medicine, health medicine, and constitutional theory in Chinese medicine

Qi Wang

Frontiers of Medicine 2012, Volume 6, Issue 1, Pages 1-7 doi: 10.1007/s11684-012-0173-y

Abstract: The Chinese constitutional theory developed in the 1970s expresses the principle behind Chinese healthThe Chinese constitutional theory divides the constitution of the Chinese population into nine categoriesThe theory also provides methods and tools for individualized treatment.

Keywords： individualized medicine health medicine constitutional theory in Chinese medicine

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Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy

Yiling Wu

Frontiers of Medicine 2011, Volume 5, Issue 2, Pages 118-122 doi: 10.1007/s11684-011-0140-z

Abstract: According to the self-discipline of traditional Chinese medicine, vessel-collateral theory was constructedequilibrium ( )” based on the “qi–yin-yang–five elements” coupled with the (nutrients)- (defense) theory, has become the core content of the vessel-collateral theory.connotations of the hypothesis, such as capsule, as the representative drugs of vessel collateral theory

Keywords： vessel-collateral theory vasculopathy prevention and treatment

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The fundamental theory of traditional Chinese medicine and the consideration in its research strategy

Zhenji Li, Chunbo Xu

Frontiers of Medicine 2011, Volume 5, Issue 2, Pages 208-211 doi: 10.1007/s11684-011-0126-x

Abstract: Stressing the uniqueness and complexity of traditional Chinese medicine (TCM) theory system, this paperIt suggests that when the research strategy of TCM theory is designed, the core theory of TCM shouldbe emphasized on the theoretical research on TCM original thinking theory, TCM theory, Chinese materiaResearchers and practitioners should ensure that the basic research on TCM theory is based on clinicalthe goal of inheriting, enriching, and developing the fundamental theory of TCM.

Keywords： fundamental theory traditional Chinese medicine research strategy

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Loop theory and applications to some key problems of kinematic structure of kinematic chains

Huafeng DING, Zhen HUANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3, Pages 276-283 doi: 10.1007/s11465-009-0061-6

Abstract: In this paper, a new loop theory of kinematic chains is proposed.Based on this theory, some key problems that hamper computer-based automatic synthesis of mechanisms

Keywords： Loop theory kinematic chains isomorphism atlas database

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INFLUENCING FOOD-WASTE BEHAVIORS AT UNIVERSITY CANTEENS IN BEIJING, CHINA: AN INVESTIGATION BASED ON THE THEORY

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1, Pages 83-94 doi: 10.15302/J-FASE-2022472

Abstract:

● Investigate the actual situation of food waste at university canteens in Beijing, China.

Keywords： university students food waste behavior theory of planned behavior university canteen

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An institutional theory perspective

Frontiers of Engineering Management Pages 427-438 doi: 10.1007/s42524-023-0258-0

Abstract: We use the three pillars of institutional theory — regulative, normative and cultural-cognitive — and

Keywords： project-oriented organizations innovation institutional entrepreneurship institutional theory

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Several basic problems in plastic theory of geomaterials

Yuanxue LIU, Jiawu ZHOU, Zhongyou LI, Chen CHEN, Yingren ZHENG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 81-84 doi: 10.1007/s11709-009-0016-3

Abstract: basic mechanical properties of geomaterials, it was proven that the Drucker Postulate and the classical theoryMoreover, several basic problems of plastic theory of geomaterials were discussed.theoretical analysis, the following have been proven: the single yield surface model based on the classical theory

Keywords： constitutive relation geomaterials classial plastic theory Drucker Postulate yield surface flow rule

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Standard model of knowledge representation

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3, Pages 275-288 doi: 10.1007/s11465-016-0372-3

Abstract: According to ontology, system theory, and control theory, a standard model of knowledge representation

Keywords： knowledge representation standard model ontology system theory control theory multidimensional representation

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Title Author Date Type Operation

ultrafiltration membrane fouling behavior under different pH conditions: interface adhesion force and XDLVOtheory analysis

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Journal Article

A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Journal Article

Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots

Journal Article

Analysis of Theory of Architecture

Gu Mengchao

Journal Article

Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Journal Article

An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Journal Article

An application of game theory in distributed collaborative decision making

Angran XIAO

Journal Article

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

Qi Wang

Journal Article

Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy