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May 25, 2018Open    AccessArticle

Prediction of the Fragmentation Pathway of Atorvastatin De-Protonated Ion

Dev Kant Shandilya, Rekha Israni, Peter Edward Joseph
Introduction: A fragmentation pathway of atorvastatin de-protonated ion was proposed based on rational interpretation workflows. Method: The mass spectral data (MS, MS/MS and MS3) of atorvastatin was obtained by electrospray negative ionization mode with flow injection analysis; using liquid chromatography systems coupled with tandem mass spectr
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May 25, 2018Open    AccessArticle

Modeling and Numerical Simulation of Hydrogen Production from Dimethyl Ether Steam Reforming

Lei Guo, Cong Li
In order to study the steam reforming process of dimethyl ether, a kind of reformer reactor with thermal jacket, heat pipe and catalytic reaction bed was designed. The effects of reaction gas temperature, molar ratio of water to ether and the structure parameters of the reactor on the conversion of dimethyl ether, the yield of hydrogen, the hydrogen concentration at the outlet of the reactor a
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May 24, 2018Open    AccessArticle

Separation and Purification of Ursolic Acid from Cynomorium songaricum Exacts with Macroporous Resins

Xifeng Zhang, Wangxu Hou, Xue Zheng
Enrichment and purification of ursolic acid from Cynomorium songaricum exacts were studied using five macroporous resins. The static tests indicated that D101 resin was appropriate and its adsorption data were well fitted to the Langmuir and Freundlich isotherms. To optimize the separation process, dynamic adsorption and desorption tests were carried out. The op
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May 24, 2018Open    AccessArticle

Solving Three Dimensional and Time Depending PDEs by Haar Wavelets Method

Abdeljalil Nachaoui, Ekhlass S. Al-Rawi, Ahmed F. Qasim
Haar wavelets are applied for solution of three dimensional partial differential equations (PDEs) or time depending two dimensional PDEs. The proposed method is mathematically simple and fast. Two techniques are used in numerical solution, the first based on 2D-Haar wavelets and the second based on 3D-Haar wavelets and we compare them. To demonstrate the efficiency of the method, two test prob
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May 24, 2018Open    AccessArticle

An Agent Based Model to Analyze the Effects of Traffic Signal Timing on Vehicle Throughput in Inclement Weather

Michael Duff, Robert D. McLeod
This preliminary paper discusses the creation of an agent based model for a signalized traffic intersection derived from a previously developed mathematical vehicle-following micro-simulation model. The results of the agent based model are compared to the results from the mathematical model for verification purposes. The agent based model is then used to show the effects of inclement weather on vehicle throughput at a traffic inte
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May 24, 2018Open    AccessArticle

The Threshold Effect of R and D Intensity on Enterprise Performance—Evidence from the GEM Listed Company

Yuequn Wei, Guiping Bao
This paper mainly adopts the panel data of listed company in GEM from 2012 to 2016, with the threshold panel model, Deeply studying the influence of R & D investment intensity on enterprise performance, and discovering that R&D intensity has a double threshold effect on enterprise performance. When the sustainable ability of research and development activities is lower than the first threshold va
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May 24, 2018Open    AccessArticle

On Strategies of Promoting Senior Citizen Education Teachers’ Abilities Based on Core Competence

Junxian Chen
Core competence of senior citizen education teachers can play an important role in defining professional standards of senior citizen education teachers, becoming a professional threshold, measuring the core of teachers’ professional development, assessing the current performance management, and being the tool for teachers’ self-evaluation. The index system of core competence of senior citizen education t
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May 24, 2018Open    AccessArticle

Research on Diesel Engine Energy Saving and Emission Reduction Based on Air System and NOx Virtual Sensor Model

Xuejun Li, Miao Liu, Chuanchang Li
As of the beginning of 2017, the number of motor vehicles in our country exceeded 300 million. Motor vehicle emissions are one of the most important sources of atmospheric haze. Therefore, vehicle emissions and energy consumption have always been important research directions for emission reduction and energy saving. In this paper, IOC (intake oxygen concentration) observer and feedforward controller of EGR
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May 24, 2018Open    AccessArticle

Integration and Cross-Border: Design of General Education Based on Multiple Fusion

Yuan Chen
General education is the development appeal of humanistic education. At the basic education stage, the general teaching fits with the physical and mental development and cognitive rules of learners at a young age. Therefore, the application and practice of general education in developed countries is relatively universal. The teaching of general education in our country started late, but the proposition that needs to be developed i
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May 23, 2018Open    AccessArticle

Optimization Comparison of Stand-Alone and Grid-Tied Solar PV Systems in Rwanda

Samuel Bimenyimana, Godwin Norense Osarumwense Asemota, Paula Jeanne IHirwe
Solar power has gained great usage in electricity generation world-wide, and stand-alone is common in Rwanda. Site visits and energy audit estimates for a typical residential house in Rwamagana district, were used to cost effectively compare stand-alone and grid-tied PV systems able to supply 7.2 kWh/day, load. Algorithms design of lifetime costs and benefits were developed, to analyse total daily energy requirements using Frequen
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