Iris Publishers Journal Of Engineering Sciences

Developing Virtual Equipment to Enhance Learning of Structures and Material Science in an Aeronautics and Astronautics Engineering Program Authored by Genisson Silva Coutinho Laboratory education represents an essential component of engineering curricula [1]. Laboratories help students to learn concepts, principles, and also fundamental engineering skills such as designing, problem-solving, and troubleshooting [2]. Despite this role, a series of constraints may prevent the ideal use of laboratories in engineering education. For example, traditional hands-on laboratories usually require significant investment in equipment, infrastructure, and space [3,4]. This fact may prevent universities and departments from creating the ideal lab environments necessary to students’ learning of knowledge and skills [5]. To fix the issues caused by these constraints, educators are adopting emerging technologies that make the lab more inclusive, creative and effective. Among these emerging technologies...

The Analysis of Spalling Effect on the Stress Distribution of Underground Pillar Spalling Using FLAC3D Authored by Yichen Chen In underground mining, miners have to carry out high-risk work under extreme conditions [1]. Pillar and roof span stability are two essential prerequisites for safe working conditions in room-andpillar mines [2]. Unstable pillars can result in rock sloughing from the pillar and can lead to the collapse of the roof if one or more pillars should fail. Failure of the rock surrounding underground excavations in hard, brittle rock tends to initiate by a process of spalling in which slabs of rock are formed parallel to the excavation surfaces [2] (Figure 1). Spalling is a process that occurs when the confining stress is low and the rock splits in a direction parallel to the major compressive stress and forms slabs which can dislodge and fall [3]. In addition to causing safe hazards to operators, the rib spalling will also decrease the size of the pillar, reducing th...

Modeling and Optimization of The Energy Bill Authored by Aziz Ettahir In our shaken world of energy crisis and inadequate supply in relation to the increased demand of our country, it is important that all companies have a good control of their energy consumption which is synonymous with gain of profit for the country, And on the other hand to relieve demand. The objective of this work is to find the correlations between the sulfur consumed and the thermal energy produced (high pressure steam) of a Moroccan company which is one of the five largest fertilizer companies in the world and the leader in the field of phosphate industry. These correlations will then make it possible to realize a simulator which will be used to optimize the energy bill on the basis of linear programming.   To read more about this article:  https://irispublishers.com/gjes/fulltext/modeling-and-optimization-of-the-energy-bill.ID.000588.php To know more about  Journals :  Iris Publishers To kn...

Use of Hydrogels in Brain Applications Authored by Haider Butt In the last decades, an exponential and rapid evolution has been seen in hydrogel studies. This all started when for the very first-time hydrogels were used in eye surgery. Hydrogels made their way in the medical application because of its biodegradable nature. Now a day’s hydrogels applications can be found in many fields including contact lenses, wearable sensors for muscular activities, biodegradables hydrogels for reconstructive surgery and many more. All of these classes have been continuous studies with time to improve the efficiency and filed of applications. Beside all these applications, recently hydrogels were used for tissue engineering especially as a scaffold for stem cells. It was found that hydrogels play an important role in brain application including the treatment of brain tumors. This review covers the use of hydrogels in brain applications.   To read more about this article:  https://irispublis...

Efficiency of Different Foaming Agents for Enhanced Oil Recovery: Bulk and Dynamic Flooding Screening Authored by El Mahdy Osama Foamability and foam stability are of main concerns in foam displacement for enhanced oil recovery. This work presents the output of systematic bulk and Dynamic screening of several foaming agents (surfactants). Solution salinity and oil presence effects were explored in static bulk tests. The most effective foaming agents were then investigated further through dynamic flooding in porous medium. The results indicate the foamability of all surfactants except for Triton X-405. Zonyl FSO and Hitenol H-10 were superior in term of foam stability with more stability as surfactants concentration increases. Equivalent optimum foam volumes were obtained for both surfactants but at higher concentrations of Hitenol H-10. Increasing solution salinity affected Zonyl FSO foam stability negatively at low concentration. Observation indicates that oil stayed in the lamella’s...