Papers by Keyword: Interaction

Abstract: The present study aims to explore the interactions between phenothiazine drugs (viz. promethazine hydrochloride (PMT) and promazine hydrochloride (PMZ)) and 1-alkyl-3-butylimidazolium based surface active ionic liquids (SAILs) using conductivity, cyclic voltammetry and DPV measurements. The drugs have been found to form mixed micelles with the SAILs and thus vary the micellar parameters of SAILs as evaluated from conductivity measurements,. Moreover, phenothiazine drugs are known to exhibit redox behavior which is prone to change in the presence of SAILs. This change in the redox active behavior is seen to be dependent on the concentration as well as the nature of the alkyl chain of both drugs and SAILs. The interactions between the drugs and the SAILs have been found to be electrostatic as well as hydrophobic.

Abstract: Fractionated pyrolysis of biomass and its three main components (viz. hemicellulose, cellulose and lignin) was carried out on a thermogravimetric analyzer, which effectively separated the pyrolysis progress of different compositions. Three temperature ranges of 40-300 °C, 300-400 °C and 400-700 °C were presented with hemicellulose, cellulose and lignin as the dominant component, respectively. Fir contains much more cellulose and lignin than rice straw, and thus the weight loss in 300-400 °C is much higher, as 66.4% of the total weight loss. Rice straw contains more extractives and hemicellulose, resulting in higher mass loss in the early pyrolysis stage of 40-300 °C. The pyrolysis of biomass was predicted by hemicellulose, cellulose and lignin according to the additivity law, and the fractionated pyrolysis showed good performance in the prediction of volatile and residue yields of wood biomass. The interactions of biomass components were revealed to be unneglectable.

Abstract: According to the mechanical simulation intelligent control theory, and combining the character interaction principle, the use of genetic algorithm carries out an in-depth analysis and research for the process of PC MCU automatic control, and then the control algorithm of interactive genetic is established, finally we design the VGA structure circuit. In order to validate the validity and reliability of the model and control circuit, this paper uses the medical micro robot as the research object to the experimental analysis for the delay control circuit, so the delay characteristic curve will be obtained. By the control of time delay curve, we can be seen that the scanning delay of controllable voltage can control delay in the range of 22ps-60ps, it meets the design standards, to provide the theory reference for the mechanical bionic intelligence automatic control research.

Abstract: The significant alteration of absorption (A) of monolayer graphene under mild oxygen plasma exposure has been observed. The first important effect is the reduction of the excitonic resonance peak at 4.64 eV. Secondly, in the near infrared range, A is gradually suppressed below an exposure-dependent threshold in sense that A << A₀. Quantity A₀ (given by πα and α is the fine structure constant) denotes constant absorption and relates to universal optical conductivity σ₀. The suppression of A₀ can be thought as the weakening of electron-hole interaction as displayed by the reduction of the excitonic resonance peak at 4.64 eV. The weakening of this interaction is due to the disorder introduced by the oxygen plasma exposure.

Abstract: Virtual laboratory for experimental teaching provided a new form, virtual reality modeling language (VRML language) for virtual laboratory construction provides economic effective means. Virtual experiment technology as a new teaching media, which appears to modern teaching will no doubt, especially remote teaching far-reaching impact .This paper discusses the realization method of the virtual laboratory based on VRML.

Abstract: Based upon the characteristics of micro-pile in building heightening and transformation (mainly including the mechanism of the press injection increasing the bearing capacity , the rigid connection between micro-pile and its original foundation), through the analysis of its load characteristics in building heightening and transformation, using the theory of pile foundation constructed in reverse order, then the mechanical mechanism of micro-pile and original foundation is studied and the analysis method of soil-pile-foundation (cap) interaction by considering pile tip penetration displacement and soil compression between pile shafts is demonstrated.

Abstract: The superstructure and foundation of highrise are in a complete system of interaction. Taking the case of project, by comparatively analyzing the computed value which is calculated by applying the theory of interaction between superstructure and foundation and the measured value ,we find that the computed value neatly dovetails with the measured value.

Abstract: According to the type of Guizhou marine sedimentary phosphorus ore, the main reason of refractory is the similar surface properties of collophane and dolomite.In addition,the interaction of dissolved components of mineral and external ion leads the new eguilibrium system in aqueous solution,which further affects the selective adsorption of the agent in mineral surface.Selecting collophanite-dolomite system as the research object, this article studies the effect of the interaction of some inorganic anions on the floatability difference of the two minerals in the flotation system. The effect of the interaction on the electric properties of the mineral surface and adsorption characteristics were also examined with the purpose to find out the interaction mechanism.It hopes to provide theoretical basis for practical mineral selection. The research findings shows that in the range of pH 3 to 5, the interaction of PO₄^3- and SO₄^2- has a better effect of the separation between collophanite and dolomite.The interactions of SiO₃^2- and CO₃^2- makes the floatability difference of collophanite and dolomite closer when the pH is greater than 9.25, and simultaneously shows some negative effects on the flotation separation of the two minerals.

Abstract: The physico-chemical characteristics of attapulgite clay confer appropriate properties to their different industrial uses, such as: Drilling fluid, bleaching of vegetable oils, mineral and animal grease and oil absorbents, pet waste absorbents (pet litter), purification of drinking water etc. The aim of this study was the chemical modification of attapulgite originally from state of Piauí, for applications in polyester-based composites. The unmodified and modified clay were characterized by X-ray diffraction (XRD). In order to evaluate the interaction of clays with organic solvents, the test of Foster swelling with gasoline, diesel and toluene was conducted. The polyester resin-based composite and clay unmodified and modified in different percentages were molded by hand lay up technique and they were characterized by water sorption.

Abstract: This research investigates the interaction between vegetation growth and water erosion by a new dynamic model. According to the theoretical and numerical analysis of the research, there are three cases of equilibrium distribution and their dynamics over time. And the dynamics between vegetation and erosion is disparate under the condition of different parameters. Every equilibrium point also has a unique distribution under every set of parameters. When there are two interior equilibriums, a critical curve exists and divides the system into two areas, one is coexistence area and another is dominated by vegetation or erosion.