Engineering Research and Reviews

  • Design of “S” type track carbon free car based on cam mechanism

    Reverse part model based on motion trajectory is a common method in mechanism design. Compared with the traditional calculation method, it is simple and practical, and can simulate the reconstruction of the trajectory. In this paper, S-type carbon-free car was taken as an example. Firstly, the motion trajectory of the ideal car path was given. UG software was used to obtain the curve characteristics, established a mathematical model, and took the curve into the model to obtain the data of cam coordinate points. Then the MATLAB software was used to draw the cam contour and analyzed the feasibility of cam operation. The vehicle trajectory simulation was realized in MATLAB environment. Finally, the reasonable cam contour coordinate point data was imported into UG software to establish a 3D model of the cam, and the car track was repeatedly optimized to get the optimal cam shape. The rationality and the accuracy of the model were verified by the carbon-free car made by the scheme, and the corresponding guidance was provided for the research of others.

  • Development of a Health Information Exchange (HIE) system using the Unstructured Supplementary Service Data (USSD) Technology

    Most advanced nations have existing software systems that enforce a significant level of Health Information Exchange interoperability. A straightforward implementation or integration of the technique of such an application into the healthcare system in regions that have infrastructure challenges may not achieve the maximum result. Existing EHR interoperability solutions are primarily Web-based and are explicitly compatible to particular health standards. Resulting from this, such current technologies also need, at the very least, secure access to internet connectivity.On the other hand, several regions around the world (especially in developing countries) are characterized with bad internet accessibility, imbalanced spread of computer technology and literacy, and acute information breach.Therefore, this work aims to develop a system that allows patient records to be exchanged between health facilities given the challenge of lack of ubiquitous internet connectivity, unreliable internet access and also bridging the digital divide gap.This research will have positive impacts on different stakeholders in the health sector. Health institutions can access patients’ information evading the issue of poor or no internet connectivity. As a result of this, healthcare professionals will be able to give better and prompt treatments in cases of emergencies and avoid medical errors. Medical practitioners will also not have to deal with the communication gap or barrier when seeing a patient with low literacy level.This research would not only be of relevance to the health sector, it can also be adapted by other sectors using the USSD technology as a means of storage and retrieval of information.

  • Discussion on the relationship between construction safety accident and time based on the correspondence analysis model

    Based on the correspondence analysis model and the method of mining the cause and time of construction accidents. Using Python crawler technology to crawl 3896 data of the causes of construction safety accidents in China Construction Safety Supervision Information System from 2012 to 2018, a contingency table of various types and times of accidents in construction safety accidents was established. By using factor analysis, the relationship between Q-factor analysis and R-factor analysis in the corresponding factor analysis model was established. The model was analyzed and optimized by a special point removal method, and the convergence of the model was strengthened. Finally, the causes of construction safety accidents in the model and the time of one day and one year were calculated and drawn in the corresponding analysis chart of the two-dimensional model. Mining the relationship between them according to their relationship in the graph based on the data collection of 3896 building safety line accidents, this paper put forward the method of mining the main causes of accidents, and used SPSS platform technology to mine the accident data. The results showed that the occurrence of electric shock and drowning was closely related to August, fire and explosion were closely related to February, and poisoning and asphyxiation were closely related to January. 5-6 a.m. was closely related to fire and explosion, and vehicle injury was closely related to 8-9 p.m. To put forward prevention suggestions for construction accident prevention.

  • A workpiece turnover device based on aerodynamic system

    In view of the problem of workpiece turnover on the assembly line of the factory, a machine for automatic workpiece turnover is designed, whose design directly affects the work level of the whole automatic production line. This paper discusses the mechanical structure of the workpiece turnover device in the automatic production line. The turnover of the workpiece can be realized by using the rotary cylinder drive system. The aerodynamic system of the workpiece is designed. The working principle of the aerodynamic system and the design of PLC circuit are analyzed. The results show that the turning of the workpiece can be realized by using the pneumatic system to control the movement of the mechanical device. The aerodynamic device has the advantages of simple structure, easy operation and strong practicability.

  • Investigation of forced convective heat transfer in nanofluids

    The present paper concerns a theoretical study of heat transfer of the laminar two dimensional flows of various nanofluids taking into account the dissipation due to viscous term past a 2-D flat plate had a different temperatures. The steady incompressible flow equations were used and transformed to a nonlinear Ordinary Differential Equation (ODE). These equations were solved numerically using implicit finite difference method. Three types of nanoparticles in the base flow of water were considered. The symbolic software Mathematica was used in the present study. Different types of nanoparticles, different values of, nanoparticle volume fraction, Eckart and Prandtl number were tested and analyzed at different wall temperature. The effect of these parameters on the flow behaviour, the local skin friction coefficient, Nusselt number, the velocity and the temperature profiles were presented and investigated. It is concluded that these parameters affect the fluid flow behaviour and heat transfer parameters especially nanoparticle concentration. The presence of nanoparticles showed an enhancement in the heat transfer rate moreover its type has a significant effect on heat transfer enhancement.


    Electroencephalogram or EEG is a trace of Brain action from different locales of the cerebrum. It is the electrical movement and activity determined by putting the electrode terminals on the scalp. Artifacts are unnecessary noise signals in an EEG record. These noise in recording EEG sham a major mortification for EEG interpretation and disposal. Categorization of artifacts depends on source of its creation similar to Physiological artifacts along with Exterior artifacts. Recognition of artifacts, identification of artifacts as well as eradication of artifacts is a significant procedure to diminish the possibility of false impression of EEG not only for clinical but also for non-clinical fields. The majority of recording convention. There are various strategies for artifact removal which incorporates manual and automatic techniques. Morphology and Electrical distinctiveness of artifacts can show the way to fake elucidation that is intolerable in support of clinical as well as non clinical utilization. Thus artifacts in EEG signals must be removed or minimized before further interpretation. The presented paper describes a review on detection, classification and removal/ minimization of the recorded EEG signal artifacts.


    This paper describes the statistical analysis of EEG signals. EEG examination is carried out and compared between controlled healthy and Mild cognitive impairment (MCI) patients which may further develop dementia or Alzheimer disease. The statistical techniques provide the comparative analysis of EEG signal. The correct evaluation of EEG provides the extraction of valuable information which is important clinically. Also, extracting significant features from EEG is an important task for classification between various patients. The analysis of EEG data provides correct frequency rhythms. The relative Power spectral density values by Auto Regressive-Burg process cleared that; associated with the control group, the relative PSD is improved in the theta rhythmic range while expressively reduced in the alpha-2 rhythmic range.

  • Leakage reduction in water supply system through the adjustment of its hydraulic efficiency

    The present paper provides a pilot example for water networks managers and operators intending to adjust the hydraulic condition of a pressurized water system to operations conditions with the objective to improve its efficiency. For this aim, a hydraulic modeling methodology has been applied and combined with site inspection, and field measurements. The selected water system operates under particular topographic and operational conditions and suffers from major problems making the system unable to deliver water with the designed volume to the regional reservoir. The system is studied under both steady and unsteady conditions. The study shows benefits of the proposed methodology in terms of water loss reduction which allows enhancing the hydraulic performance of the system. Consequently, the adjustment of a water system to fit with the real operations conditions has improved the hydraulic reliability and efficiency of the system. The novelty of this paper is two-fold. First, it gathers field measurements and hydraulic modeling. Second, it forecasts and measures the efficiency of proposed rehabilitation works by checking the performance of the water system. Therefore, the paper results can be useful to researchers in hydraulics who need an identification of relevant studies, as well as to practitioners interested in understanding the available methods, techniques and tools and their applicability level in real case studies.

  • Research on automated machine tool management model

    With the development of science and technology, the advancement of industrialization, automated production has been widely used, and automated machine tools are also favored as modern equipment for automation management coordination. This paper considers that the automatic lathe may fail during the process of continuously processing a certain part. Therefore, establishing the best inspection interval and tool replacement strategy for model design makes the automatic machine tool management more mature, and then promotes the modern development of production equipment.

  • A Laboratory-Based Experiment on the Efficacy of Graphitic Carbon Nitride Doped with Tungsten Chloride in the Degradation of Organic Dye Pollutant Rhodamine-b Dye from Wastewater

    Water is an essential commodity whose quantity and quality needs to be secured for easier accessibility at both the industrial, public and household levels. However, its availability in adequate quality and quantity have continued to decline worldwide. Indeed, rise in human population coupled with the climate change phenomena have greatly impacted on the quality of water resources through increased organic and inorganic pollution. Rhodamine B (RhB) dye is a common organic pollutant majorly in industrial wastewater and with numerous environmental and human health effects. The application of of graphitic carbon nitride (G-C3N4) in the purification of wastewater to enhance the removal of RhB in wastewater is a technology of interest to most most environmental quality regulators and agencies. The study was therefore aimed at investigating the performance of graphitic carbon nitride doped with tungsten chloride in the degradation of organic dye pollutant rhodamine B dye from wastewater. The study showed that the as-prepared hybrid photo catalyst exhibits an improved photo degradation performance because of its synergetic effect. Indeed, the photo excited electrons from g-C3N4 were able to efficiently separate and are injected to the conductive band of WO3. The optimum photo activity occurred at the optimum ratio of 0.25WO3/g- C3N4. There was also stability and efficiency within the hybrid catalyst within the photo degradation process. Indeed, the composite indicates a high activity for degradation of RhB under visible light irradiation. The presence of g-C3N4 proved to be beneficial for enhancement in photo catalytic activity of the g-C3N4-WO3 composite and proved to be one of the best alternative modes of n the degrading organic dye pollutant Rhodamine B dye from wastewater.