In any construction activity, the material is an essential component. But in construction, there is a large dependency on man-made materials as compared with materials from natural resources. Manufacturing of man-made building materials emits a large amount of CO2, CO, NO2, and other environmentally unfriendly gasses and by-products which may be poisonous and harmful for human health as well as for the environment. Because of this infrastructure sector is one of the leading causes of environmental degradation. With drastic exposure in population in recent times, the demand for these man-made materials has been increased a lot. To meet this need of the current situation, we have to look for sustainable, eco-friendly materials that have characteristics like energy efficiency, easy availability, and not disturbing towards environment ecology system. The main aim of these green building materials is to reduce the impact of construction activities on human health and the natural environment. This current paper reviews the impact of sustainable green building material on the environment, its properties, and its benefits. Different types of green building material and their characteristics and specifications. In this, a comparison between green building and conventional building on various conditions is also discussed. Further, we have also reviewed U.S. green building rating systems (LEED) and its criteria for certification.

Covid 19 is a new animal in the zoo which has been commanded by homo sapiens for 200000 years. Data says that the battle against Covid 19 is going to be a long one. Intersectoral research is what is needed to amour sapiens to fight the invader. In this multifaceted research, the role of a data scientist is that of a defender.  Innumerable reports, statistics and analysis of Covid 19 has generated a virtual data lake. The project lays down its prime focus on the various strategies to manage the Covid 19 data. In simple terms, machine learning tools like decision trees and clustering in addition to ensemble techniques can go a long way in creating a meaningful profile out of the repository of Covid 19 data. 

Present paper explores the concept of smart cities, its features, attributes and ways in which it can manage the energy efficiently for sustainability. Brining case study of ancient cities of Harappa and Mohenjo-Daro, the author suggest that their study could bring ways in which these cities managed resources and maintained sustainability in those time. The paper, thus presents energy efficiency strategies and probable solutions for sustainability that could pave the way for the evolutionary concept of the smart cities.

In this work, CFD (Computational Fluid Dynamics) simulations have been conducted to investigate flow behavior of water in fully baffled stirred tank employed with Rushton impeller. The dimension of the inner rotating fluid zones in Multiple Reference Frame (MRF) impeller model plays an important role in accurately predicting the results on numerically based problems. Therefore, the aim of the paper is to develop CFD model, optimizing the dimensions of inner rotating fluid zone for MRF model (which is a numerical algorithm designed for modeling the rotating part i.e., impeller in stirred tank). Standard k–? turbulence model which is a commonly used algorithm to model the turbulent fluid flow nature in the system is adopted. The velocity profile (radial and tangential velocity) are studied and compared with experimental results of Wu and Patterson (1989) and Rushton et al. (1950).Based on the comparison of correlation coefficient in the predictions of normalized mean velocities, zone 4 having diameter of 0.104 m and height of 0.032 m was found to be optimal for CFD modelling of stirred tank. The global flow parameters such as flow number predicted by CFD matched quite well with the data of Wu and Patterson (1989) and Rushton et al. (1950). The percentage deviation in the pumping number predictions at various radial locations show a percentage deviation less than 15% in comparison with experimental results.

The main objective of Robotic Process Automation (RPA) is to improve client experience and effective excellence by improving efficiency, performance, and agility of the process performed. RPA technology consists of a software robot installed in a user’s computer, machine or device that tracks repetitive human activities and replicate them to perform the complicated, redundant, and rule-based task at ease which is performed on a daily basis.

In data entry operations, which includes manual entry of data containing various fields, collected from multiple sources and combined together in organized form, and is needed to be uploaded on a particular website in a required manner could easily be automated using UI-Path which is a tool to implement Robotic Process Automation. After the task of data entry operation on required website is completed, an acknowledgement in the form of e-mail is sent to user that the task has been completed.

Dynamic In the current day world IOT based keen home execution has become a genuine enticement and has additionally become out to be a significant region of examination. This exploration propounds a methodology for keen home computerization by means of IOT that is remotely controllable. An IOT based home computerization framework is required to screen and control home apparatuses remotely over the web. In this framework mobiles and PCs are utilized for controlling the essential home apparatus and make it work through the structured pages or versatile applications with neighborhood) servers or web association, therefore the house is known as a brilliant home. This idea of steering computerization in the lodging part is spreading like fire in the bramble. Western societies have greeted the idea of home robotization wholeheartedly. INDIA is additionally keeping a similar pace of modernisation as western nations seem to be. Energetic home mechanizing approaches are used, and IOT demonstrated as plan to the star among them. It gives plausibility to get to the home robotization framework from anyplace round the globe utilizing web associations. It limits superfluous human endeavors and builds up the way of life of the nation's kin.

In recent time, nanoparticles of noble metals like gold, silver have drawn a considerable interest of researchers due to their various applications such as in sensors, electronic devices, solar cell, semiconductors, biosensors etc. In the present review article, the main focus is on silver nanoparticles (Ag NPs) which are widely used due to their unique properties such as optical, electronic, catalytic properties which are shape & size dependent. The interaction of light with silver nanoparticles can give rise to collective oscillations of the free electrons commonly known as surface plasmons. The surface plasmon resonance band (SPR) for silver nanoparticles occurs in the visible region of electromagnetic spectrum and this property has been exploited in a number of applications. This paper highlights the various optoelectronic and sensing application of silver nanoparticles.

The hastily growing population, depleting water resources, and weather change resulting in prolonged droughts and floods have provided drinking water with a coveted status among other natural resources. Nanotechnology-based totally multifunctional and exceptionally efficient approaches are supplying affordable solutions to water/wastewater treatments that do not depend on massive infrastructures or centralized systems. The aim of the present observation is to review the feasible packages of the nanoparticles/fibers for the removal of pollution from water/wastewater. The paper will briefly evaluate the supply and practice of various nanomaterials (particles or fibers) for removal of viruses, inorganic solutes, heavy metals, steel ions, complex natural compounds, herbal natural count, nitrate, and other pollutants present in floor water, ground water, and/or industrial water. Eventually, proposals are made based on the current practices of nanotechnology packages in water enterprise for an independent water purification unit for casting off all sorts of contaminants from wastewater.

Cybercrime is a computer-oriented crime conducted over network. Ethical hacking is used to overcome this cybercrime situation, but it is still increasing day by day. This paper discusses the overview of cyber security, its challenges and ethical hacking. This also contains advantages and disadvantages of ethical hacking. Information has also been provided for different types of hacking.

Importance of cyber security has been highlighted for online education being provided these days in view of COVID-19. Case studies of zoom and teams Microsoft have also been discussed. Since none of these have been proved to be secured.

Framework has been proposed to make online education more secure and safe.

In the present scenario, due to the unavailability of power grid in rural areas as well as depleting fossil fuel sources, it causes us to implement newer technologies which rely on renewable energy resources like solar energy, wind energy, etc. As we know solar energy is abundant in the supply and is available during day time in all countries. In this project we are designing and developing a standalone BLDC based solar air cooler. As we know numerous researches has been carried out on irrigation and automotive systems which are power by a PV array and it formed by combining various converters mainly DC-DC and other motor drives, but as the statistics shown, very low work has been carried out in the field of home-appliances. The main challenge while implementing this project is the maintenance of constant speed of the motor. The system consists of the Photovoltaic array which is connected to the sepic dc-dc converter which in turn helps in feeding the VSI and finally supplying the required voltage to the BLDC motor which is coupled to cooling fan of the air cooler. The speed of motor is controlled according to the measured room temperature and switching pulses to the sepic converter is varied according to the temperature changes. BLDC motor is employed due to its high efficiency, high torque to weight ratio and high reliability. The evalution of the proposed system for various temperatures is carried out by simulating the proposed system using MATLAB/Simulink.

Face detection technologies have made many improvements in a short amount of time. Smart Display Board With CCTV For Attendance is a real-world solution which comes with day to day activities of handling student attendance system. A face recognition-based attendance system is a process of recognizing the students face for taking attendance by using face biometrics based on high - definition monitor video and other information technology. In this project, the camera will be able to find and recognize faces fast and precisely in images. The project is made in such a way that the face of the student can be easily recognized for their attendance so that the attendance database can be easily reflected automatically and if the student is not present a message is sent to his/her parents or guardians.