International Research Journal on Advanced Science Hub

 
Cement concrete and other cement-based composites find wide application  in the construction industry. The manufacturing of cement releases a large amount of CO2, so the use of cement has become a major area of environmental concern. Attempts have been made to minimize the quantity of cement in con- crete by replacing it with supplementary cementitious materials. Geopolymer concrete is one of those potential candidates for alternative cementitious mate- rials. In today’s world, the production of Construction and Demolition (C&D) wastes has been increased worldwide which finds no suitable disposal and can- not be used in ordinary concrete due to potential deterioration of concrete quality. However, C&D waste can be safely used with geopolymer concrete with and without the usage of Supplementary Cementitious Materials (SCMs) and play a major role in improving the strength and durability properties of concrete.

 
Increasing fuel prices and emission norms have favoured the automobile man- ufactures to use of lightweight materials. Land fill regulations imposed by many environmental governing agencies encourage the use of products which will decompose easily or which will require lesser energy for recycling. In this scenario an attempt has been made in this work to develop natural fiber hybrid composites with natural and synthetic fibers to address the issue of harm to the environment and energy spent on recycling. In this work the flexural, compres- sion, interlaminar shear stress and low velocity impact properties of natural fiber hybrid composite reinforced with carbon +E-glass intra plies, unidirec- tional sunn hemp mat interplies and nano silica particles are investigated for possible application in automobiles. It is found that the addition of nano silica particles enhances the flexural, compression, interlaminar shear strength and low velocity impact properties of the composite.

 
This paper presents the Hybrid Modulation Technique for single phase AC-AC multi-Frequency converter to overcome the local square wave overshoot in out- put waveform which are responsible for harmonics content in converter and to get better smooth voltage waveform. And also, by using SPWM (Sinusoidal Pulse Width Modulation) and TPWM (Trapezoidal Pulse Width Modulation) a comparative analysis is done; it shows how converters behave with different modulation technique. The detail study of converter and modulation techniques are done here with including operation, block diagram and mathematical cal- culations. All the studies and experimental operation are performed by using MATLAB Simulink model simulation and the switch is used for converter is MOSFET

 
The disease dengue has created panic in the minds of men and women of this time. Now a day the menacing of dengue has spread from town areas to rural areas. It affects heavily works on body organs and leads to the final state of death. It works for some years on human organs even after coming round from it. It exists in the human body.This disease is not confined now in the congested town area only, but it has broken out in full swing in the rural area. We aim is to identify the factors which are the causes of the origin of dengue and its spread over society at such a large scale. It is also our aim to find the areas of soci- ety; on which consistent endeavor will help to confine in or diminish its effect in the 0- level. Information is collected on at random survey basis, especially from peoples of dengue affected area by Questionnaire Method. Intelligence is also gathered from hospital and Internet to collect data which help to indi- cate factors performed heavily in which situation of Society. We reached the conclusion by experiment worked in the past- information and present data.

 
A reliable method for observing the performance of various systems in a student-designed formula car or All-terrain Vehicle (ATV) is quite expensive, and choices are seemed to be bounded. This paper proposes a lightweight, low power consumption and most affordable system which can collect data from various sensors placed in student formula vehicles and send it to a pit stop  or ground station. We have attached multiple sensors to collect data which includes temperature from brake discs, engine, cockpit, RPM of Shaft, Load exerted by driver on brake pedals, and steering angle. An onboard microcon- troller is programmed to collect and transmit data via the LoRa transceiver. At the ground point, a microcontroller with the same LoRa module tuned as the receiver is programmed to receive the data and display it to the crew. This data can be used to analyse the performance of vehicles in test conditions and compare them to design data.

To realize productivity of delaying the existence over sensor networks several plans hold been proposed. Among this plan, a bunching convention is a won- derful approach up to expectation drags out the existence on an organization. Notwithstanding, in applying that technique, a few hubs burn-through energy superfluously so a result over a local weather whereby the gathered records on the sensor hubs effectively covers. In that paper, we endorse a Clustered Multi- hop Routing Algorithm as decreases superfluous facts transmission amongst hubs by means of but the duplication of information. This strategy forestalls data misfortune added respecting by means of connect disappointment prob- lem then consequently the records is gathered dependably. As indicated via the consequences on the present examination, our approach lessens the electricity utilization, expands the transmission proficiency, then delays community quick so contrasted with the cutting-edge bunching strategies.