The nanocomposites of flower-like nickel phyllosilicate particles incorporated into epoxy resin were fabricated via an in-situ mixing *** flower-like nickel phyllosilicate particles were firstly synthesized using a mi...
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The nanocomposites of flower-like nickel phyllosilicate particles incorporated into epoxy resin were fabricated via an in-situ mixing *** flower-like nickel phyllosilicate particles were firstly synthesized using a mild self-sacrificial templating method,and the morphology and lamellar structure were examined *** properties of mechanical,thermal and tribological responses of epoxy nanocomposites were *** was demonstrated that adequate flower-like nickel phyllosilicate particles dispersed well in the matrix,and the nanocomposites displayed enhanced tensile strength and elastic modulus but decreased elongation at break as *** addition,friction coefficient and wear rate were increased first and then decreased along with the particle content,and showed the lowest values at a mass fraction of 5%.Nevertheless,the incorporated flower-like nickel phyllosilicate particles resulted in the continuously increasing thermal stability of epoxy resin(EP)*** study revealed the giant potential of flower-like particles in preparing high-quality EP nanocomposites.
First of all, on the basis of complete lattice, the concept of neutrosophic pseudo-t-norm (NPT) is given. Definitions and examples of representable neutrosophic pseudo-t-norms (RNPTs) are given, while unrepresentable ...
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Because of its paramount importance in the successful industrial control strategy of a given heat exchanger network(HEN),the control structure designs for providing appropriate manipulated variable(MV)and controlled v...
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Because of its paramount importance in the successful industrial control strategy of a given heat exchanger network(HEN),the control structure designs for providing appropriate manipulated variable(MV)and controlled variable pairings have received considerable ***,quite frequently HENs with such control structures face the problem of hard constraints,typically holding the HENs at less controlled operating *** both the MV pairings and the above control pairings should be considered to design a control *** paper investigates the systematic incorporation of the two pairings,and presents a methodology for designing such two-tier control *** is developed based on the sequential strategy,coupling an indirect-tier with direct-tier control structure design,wherein the intention is realized in the former stage and the latter is implemented for further *** MV identification and pairing are achieved through variations in heat load of heat exchangers to design the indirect-tier control *** the direct-tier control structure is followed the relative gain array pairing *** the proposed methodology,on the one hand,it generates an explicit connection between the MV pairings and the HEN configuration,and the quantitative interaction measure is improved to avoid the multiple solutions to break the relationship among all the control pairings into individuals;on the other hand,a two-tier control structure reveals control potentials and control system design requirements,this may avoid complex and economically unfavourable control and HEN *** application of proposed framework is illustrated with two cases involving the dynamic simulation analysis,the quantitative assessment and the random test.
Dear editor,The uncertain input delay is frequently encountered in engineeringcontrol systems. Adaptation is indispensable when the uncertain input delay is significant. In existing delayadaptive controllers [1–6], ...
Dear editor,The uncertain input delay is frequently encountered in engineeringcontrol systems. Adaptation is indispensable when the uncertain input delay is significant. In existing delayadaptive controllers [1–6], the actuator state must be measured to achieve global stability. Recently, a logic-based switching delay-adaptive state-feedback controller [7] was proposed to realize global stability without measuring the actuator state.
Aiming at the problem that measurement model uncertainty restrains navigation accuracy in the celestial/ inertial (CNS/INS) integrated navigation system, a kind of CNS/INS integrated navigation method based on improve...
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Introducing carbon quantum dots (CQDs) into photocatalysts is believed to boost the charge transfer rate and reduce charge complexation. Doping heteroatoms such as N, S, or P enable CQDs to have an uplifting electron ...
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Flexible job-shop scheduling problem (FJSP) is an extension of classical job-shop scheduling problem, which is a typical NP difficult problem with complex modeling and solving difficulties. In order to solve the probl...
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Listeria monocytogenes(***),a foodborne pathogen,can cause human *** is a potentially fatal gastrointestinal illness,which is closely related to the spread of food to *** review the literature published during 2010-20...
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Listeria monocytogenes(***),a foodborne pathogen,can cause human *** is a potentially fatal gastrointestinal illness,which is closely related to the spread of food to *** review the literature published during 2010-2019 to better understand the prevalence of *** in food products,incidence of human listeriosis,and their characteristics in Chinese *** found the main sequence types(STs)strains from foods are similar globally,and the prevalence of *** from raw meat was the highest among all food *** most common STs in food products and clinical cases were ST9(serogroup I.2)strains and ST87(serogroup Il.2)strains,*** ST87 strains being the most common STs of clinical cases might be related to the existence of Listeria pathogenicity island 4 gene and Chinese eating habits for ready-to-eat foods,among which the prevalence of ST87 strain was the highest in ready-to-eat ***,more research should be conducted to explore the reasons for the *** isolates differences in food and clinical sources.
Identifying potential sources of pharmaceuticals and personal care products(PPCPs)in the environment is critical for the effective control of PPCP *** leachate is an important source of PPCPs in water;however,it has b...
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Identifying potential sources of pharmaceuticals and personal care products(PPCPs)in the environment is critical for the effective control of PPCP *** leachate is an important source of PPCPs in water;however,it has barely been involved in source apportionment due to the lack of indicator-PPCPs(i-PPCPs)in landfill *** study provides the first systematic framework for identifying i-PPCPs for landfill leachates based on the wide-scope target monitoring of *** number of target PPCPs increased from<20 in previous studies to 68 in the present ***-nine PPCPs were detected,with median concentrations in leachate samples ranging from below the method quantification limit(MQL)to 41μg/L,and 19 of them were rarely reported previously.A total of 29 target compounds were determined to be PPCPs of high concern by principal component analysis according to multiple criteria,including occurrence,exposure potential,and ecological *** with source-specificity and representativeness analysis,erythromycin,gemfibrozil,and albendazole showed a significant difference in their occurrence in leachate compared to other potential sources(untreated and treated municipal wastewater and livestock wastewater)and correlated with total PPCP concentrations;these were recommended as i-PPCPs for *** screening procedure can be used to develop a sophisticated source apportionment method to identify sources of PPCPs from adjacent landfills.
Electrocatalytic nitrate reduction to ammonia(NRA)under ambient conditions is significant for carbonneutral synthetic ***,the lack of efficient electrocatalysts with tunable nanostructure for NRA remains a grand ***,N...
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Electrocatalytic nitrate reduction to ammonia(NRA)under ambient conditions is significant for carbonneutral synthetic ***,the lack of efficient electrocatalysts with tunable nanostructure for NRA remains a grand ***,Nb WO_(6)nanosheets with oxygen vacancy(NbWO_(6-x))was demonstrated via thermal treatment and exfoliation with NH_(3)selectivity of 86.8%and Faradaic efficiency of85.7%toward NRA.^(1)H nuclear magnetic resonance spectra coupled with^(15)N isotope labeling experiments proved that NH_(3)originated from NO_(3)^-.The function of oxygen vacancy was revealed by computational studies in ***,the reaction mechanism and pathway of NRA could be deduced based on the results of online differential electrochemical mass spectrometry(DEMS).This work provides a selective NH_(3)generation strategy to decarbonize the energy-chemical sector,bridging the gap between batteries and biofuels.
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