Influence Of Synergistic Effect Research Articles

Catalytic Oxidation of Formaldehyde over Manganese-Based Catalysts and the Influence of Synergistic Effect

Catalytic Oxidation of Formaldehyde over Manganese-Based Catalysts and the Influence of Synergistic Effect

Influence of synergistic effect between dodecylamine and sodium oleate on improving the hydrophobicity of fluorapatite

Influence of synergistic effect between dodecylamine and sodium oleate on improving the hydrophobicity of fluorapatite

Influence of macro-topography on mechanical performance of 1.0 wt% nanoclay/multi-layer graphene-epoxy nanocomposites

Influence of topography on the variation in mechanical performance of 1.0 wt% multi-layer graphene (MLG)/nanoclay-epoxy samples has been investigated. Three different systems were produced: 1.0 wt% MLG-EP, 1.0 wt% nanoclay-EP, and 0.5 wt% MLG-0.5 wt% nanoclay-EP. The influence of synergistic effect on mechanical performance in case of hybrid nanocomposites is also studied. Various topography parameters studied include maximum roughness height (Rz or Rmax), root mean square value (Rq), roughness average (Ra), and surface waviness (Wa). The Rz of as-cast 1.0 wt% multi-layer graphene, nanoclay, and 0.5 wt% MLG-0.5 wt% nanoclay-EP nanocomposites were 41.43 µm, 43.54 µm, and 40.28 µm, respectively. The 1200P abrasive paper and the velvet cloth decreased the Rz value of samples compared with as-cast samples. In contrary, the 60P and 320 P abrasive papers increased the Rz values. Due to the removal of material from the samples by erosion, the dimensions of samples decreased. The weight loss due to erosion was commensurate with the coarseness of abrasive papers. It was recorded that multi-layer graphene is more influential in enhancing the mechanical performance of epoxy nanocomposites than nanoclay. Additionally, it was observed that mechanical performance of hybrid nanocomposites did not show a marked difference suggesting that synergistic effects are not strong enough in multi-layer graphene and nanoclay.

Superparamagnetic copper ferrite nanoparticles catalyzed aerobic, ligand-Free, regioselective hydroboration of alkynes: Influence of synergistic effect

We discovered a general and comprehensive approach for the regioselective hydroboration of terminal and internal alkynes to synthesize vinylboronates using inexpensive and magnetically separable copper ferrite nanoparticles at low catalyst loading using Bis(pinacolato)diboron in the absence of ligand and additives, under mild and greener conditions. A diverse range of functional groups was tolerated in the reaction, including allene and enones, and the corresponding boronates were obtained in high yields under air. Moreover, the assynthesized alkenylboronates were used as precursors to prepare wide variety of vinylorgano chalcogenides regioselectively, in high yields. The present protocol enable the conversion of CspH bonds to make Csp2B bonds via activation of BB bond, followed by formation of Csp2Se (Te or S) bonds via activation of Se (Te or S)- Se (Te or S) bonds in a regioselective manner. Deuterium isotope labeling studies showed that the proton source of vinyl boronate stem from the solvent employed.

Influence of macro-topography on mechanical performance of 0.5 wt% nanoclay/multi-layer graphene-epoxy nanocomposites

Influence of topography on the variation in mechanical performance of 0.5 wt% multi-layer graphene (MLG)/nanoclay-epoxy nanocomposites has been studied. Three different systems were produced: 0.5 wt% MLG-EP, 0.5 wt% nanoclay-EP, and 0.25 wt% MLG-0.25 wt% nanoclay-EP. The influence of synergistic effect on mechanical performance in case of hybrid nanocomposites is also studied. Various topography parameters studied include maximum roughness height (Rz or Rmax),root mean square value (Rq),roughness average (Ra), and surface waviness (Wa).The Rz of as-cast 0.5 wt% MLG, nanoclay, and 0.25 wt% MLG-0.25 wt% nanoclay-EP nanocomposites were 41.43 μm, 43.54 μm, and 40.28 μm, respectively. The 1200P abrasive paper and the velvet cloth decreased the Rzvalue of samples compared with as-cast samples. In contrary, the 60P and 320P abrasive papers increased the Rz values. Dueto the removal of material from the samples by erosion, the dimensions of samples decreased. The weight loss due to erosion was commensurate with the coarseness of abrasive papers. It was observed that MLG is more influential in enhancing the mechanical performance of epoxy nanocomposites than nanoclay. In addition, it was observed that mechanical performance of hybrid nanocomposites did not show a marked difference suggesting that synergistic effects are not strong enough in MLG and nanoclay.

Studying and increasing light stability of rotomolding grade of polyethylene

AbstractThis article covers the state‐of‐the‐art light stabilizer for rotational molding and the influence of synergistic effects between light and thermal stabilizers, which improve physical and mechanical properties. Different formulations of polyethylene (PE) with light stabilizer, thermal stabilizer, and acid scavenger have been produced in twin‐screw extruder. To study the light stability, sheets that produced by injection‐molding machine have been put in weather‐ometer instrument for 1000 h. After and before that, physical and mechanical properties have been evaluated. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

Mixed-material coating formation on tungsten surfaces during plasma exposure in TEXTOR-94

A polished graphite sample with a tungsten layer on the plasma-facing surface was exposed to the scrape-off plasma of TEXTOR-94 for about 200 s of discharge time. The plasma exposure caused a contamination layer with a thickness up to 300 nm consisting mainly of the deposited plasma impurity carbon and the tungsten substrate material. The processes and conditions involved in the growth of such mixed material layers are examined. In accompanying experiments, the penetration of carbon into tungsten by diffusion and ion implantation at different temperatures has been measured. The influence of synergistic effects on the carbon penetration into tungsten by the simultaneous impact of carbon and hydrogen ions was studied by irradiation of tungsten with CH 3 ions. The discussion also includes processes such as non-uniform deposition, preferential erosion and prompt local redeposition.

Influence of Synergistic Effects on Ion-Exchange Chromatographic Separation of Proteins

Formation of strong bonds between proteins and polyelectrolyte chains of ion-exchange sorbents gives rise to synergistic effects in multicomponent sorption and chromatographic separation of proteins. A series of heteronetwork-cross-linked polymeric bases with varied content of ionic groups was prepared. Consecutive sorption and cosorption of insulin and α-lactalbumin on these materials were studied.

Influence of synergistic effect on the selective catalytic reduction process NO x −C n H m /O2 on zeolites

A synergistic effect has been observed experimentally on the increased activity of selective reduction of NO on cation-decationized forms of pentasil containing cobalt and on the reduction of nitrogen monoxide with propane-butane mixtures when calcium and lanthanum cations were introduced into the hydrogen form of zeolites with the pentasil structure. This non-additive increase in the activity of the zeolite catalysts is attributed to an increase in the concentration of Bronsted acid centers and their defined localization on interaction of cations (Co, Ca, La) with the H-form of the silicates. Activation of the hydrocarbon reduction occurs at these centers.