The Coronavirus situation has escorted to the closure of scholastic institutes all around the world. To not interrupt their students’ learning, educational stakeholders had retorted excellently to this challenge by switching to virtual learning and by improving their virtual learning environments (VLEs). Hence, the VLEs have particular characteristics that should be met to accommodate the students’ learning in a trustworthy and successful way. This study aimed to critically review the influential factors of learning in VLEs via a descriptive study. Findings revealed that teacher personality, student autonomy, ICT, and course design are factors related to motivation for learning in a VLE. These findings are considered valuable contributions for educational stakeholders to meet the students’ educational, psychological, social, and technological needs in VLEs which have replaced, in part or whole, the traditional educational systems in most of the educational institutions around the world.

Cement plants use fuel in burning limestone to make clinker in kilns. Due to high cost of fuels, most Cement plants are changing from high-cost liquid fuel like heavy fuel to cheap solid fuel like coal. Ashaka adopt the later. The coal is first pulverised in a ball mill and leaves the mill through a riser duct by pneumatic transport before been used in the kiln as fuel. The riser duct undergoes excessive wear which result in frequent downtime and affect the intendent purpose of fuel substitution. Also, the pulverised coal escaping under pressure through eroded areas on the duct increase the risk of fire and reduce the overall safety of the workshop. Current method which involved patching the duct by welding fail to solve the problem. This work investigates the root cause of the frequent wear of the riser duct by checking the abrasiveness of the coal being transported, checking the effect of the duct profile on wear through simulation using computational fluid dynamics (CFD). Checking the duct material rate of wear and providing the best solution in terms of cost and feasibility. After simulation using CFD it was revealed that the duct profile contributed to the wear rate. Since changing the profile will be costly, a different solution approach was considered i.e., surface finishing. Different Material samples suggested to be used as surface finishing on the duct were tested for wear at different angles using an abrasive test equipment. The test equipment which conforms with ASTM was designed, simulated using CFD and constructed. The best material with good wear resistance was found to be galvanised steel coated with automobile anti gravel and grounded with P1000. Coating the internal of the riser duct with the above material is considered to be the optimum solution in terms of cost and feasibility.

In this article, I argue in favor of the idea that art is as valuable, perhaps even more so than science in a given society. I base this on the principles that art is well appointed to teach morality; as an educational tool; to foster empathy; enabling abstract thought through form and play and governed by aesthetic principles, the precondition for knowledge as it were. I believe this is a timely and necessary argument to be made in an increasingly technocratic and materialistic society where philosophical speculation and art as “deep” are often overlooked. I also believe there is a dialectic between art and science in the first place so that it is not a matter of pitting such disciplines against each other as it were.

This research work investigates to select the appropriate portion like top, middle, bottom for both Tossa and White jute for suitable applications such as reinforcement, blending yarn, and diversified jute products. The fundamental properties of Tossa and White such as bundle strength, fineness, breaking twist, and whiteness (%) were studied. It was observed that the maximum strength found at the bottom portion for both Tossa and White were 10.35 lbs/mg, 10.08 lbs/mg respectively. The results revealed the higher breaking twist and whiteness (%) at the middle portion for both Tossa and White jute were 42.65, 36.75, 42.5%, 39% respectively. The better fineness found that at the top portion of Tossa and White jute were 36.15, 31.05 respectively.

Power systems deliver energy to loads that perform a function in such a way that no barrier of electrical conductivity occurs. The energy productions through nanotechnology based systems are much efficient. They are manufactured through laser ablation and vapor deposition methods. The use of graphene is effective for lading the energy systems as it posses the physical characteristics such as electron mobility, high conductivity. Solar cells that transform the energy coming from the sun into the electrical form as photovoltaic influence greatly infused to this process. Capacitor with combinations of nanotubes also designed that increase the electrode surface area and thus the amount of energy. Nanotechnology technique can be used to produce cheap and high efficient solar cells. Nanocapacitors also working on the basis of the physiochemical properties of both the electrode and the electrolyte materials. Nanotechnology can be utilized in the productions of various electrical and commercial appliances.

Over recent years there is a huge growth in the area of wireless networks due to its efficient design. The word sensor is defined as component which handles & monitor different kinds of inputs from different sources such as physical and environmental conditions like pressure, heat, light, sound and vibrations etc. The output produced by the sensor will be electrical in nature and this electrical signal is further applied to various controllers for other functions. A Wireless Sensor Network is basically a form of ad-hoc network which consists of thousands of tiny sensor nodes. These wireless networks are deployed where the wired network implementation is difficult or impossible. These nodes are further distributed over a wide area such as hilly areas, forests, deserts, ocean etc. and these tiny sensors communicate or exchange data with each other by using radio signals. The WSN utilizes various communication protocols like Bluetooth, Wi-Fi, Zigbee and Ultra Wide Band techniques. Every protocol has its own speed and depending upon the distance between them, there are various problems which network can face like battery failure, effective coverage area, and effective energy utilization or node failure. In this paper, the several different methods to build energy efficient network, methods to improve the lifetime of a network, method for detection and correction of node failure and in the last the important applications are discussed.

Etherification of jute fibre with butyl chloride was carried out at a temperature of 300C for a period of 2 hours in different solvents. Sodium hydroxide was selected as swelling agent for cheap and availability. Petroleum ether was used as a solvent in this research. The degree of substitution, the percent elongation, and bundle strength and moisture regain of the butyl substituted jute fibre was studied. It is observed that the bundle strength of the butyl substituted jute fibre decreases and percentage of moisture regain of the butyl substituted jute fibre decreases with the increases of substitution. The extensibility of the butyl substituted jute fibre increases up to about 10 times of its original value of 1% extension at break with the increase of substitution.

Activated carbons were prepared from jute stick by chemical activation using ZnCl2, H3PO4, and H2SO4. The influence of activating agents and carbonization temperatures ranging from 300oC ~ 350oC were studied. The properties of the carbons were characterized by iodine adsorption and the Fourier-transform infrared spectroscopy (FT-IR) method. The results of iodine tests showed resemblance close to the values found in literature 500~1200 (mg/g). FTIR results revealed the existence of O-H, C=O, C=C, C-O and C-H bonds.