International Research Journal on Advanced Science Hub

 

A few years ago, the majority of Indians had never heard of a mobile wallet, but with the rise of smart mobile phones, lightning-speed internet connection utilizing 3G, 4G, and now 5G, and attractive rewards digital wallets give, its use has skyrocketed in recent years. The number of people using the internet is continuously getting larger around the world. As a result, need of customer payment have altered dramatically. Cash settlements are a thing of the past. Digital payments are now giving rise to a stir. In the e-commerce business, the e-wallet has inclined popularity. E-Wallet transactions are becoming progres- sively popular as a replacement for cash purchases. Perception of consumers swapping from time to time with the improvement of the technology. So, this research paper attempts to study the awareness level among consumers of dig- ital wallets. Also, this paper examines the factors accountable for increasing popularity of digital wallets in India.

 

The term geopolymer is a sustainable binder refers to the study of waste mate- rials containing silicon (Si) and aluminum (Al), which create an alternative binder formed by a complex repeated chain by geopolymerization process. Hellacious materials alternation is mandatory to see the construction as a beautiful infrastructure as there are limited natural resources to produce qual- ity concrete. Alternative binder and aggregates created by using industrial waste should be used to reduce the disadvantages of conventional concrete. The Na2SiO3 / NaOH ratio activated geopolymer concrete has been well doc- umented by researchers. The ratio of these solutions to the field geopolymer concrete production is not suitable for structural geopolymer concrete because it is not possible to provide a temperature greater than 60 degree centrigrade in the field. The Na2SiO3 / NaOH ratio should be mixed 24 hours before airing the samples. Researchers have used a single alkaline solution simply instead of water when mixing concrete. In this review paper clearly compared and ana- lyzed difference between the Na2SiO3/NaOH activated geopolymer concrete versus neutral grade sodium silicate (NGSS) laboratory-based field construc- tion geopolymer concrete. NGSS is a neutral grade of SiO2: Na2O. This solu- tion is the only single neutral grade solution with 2.92 silica modulus, produced directly by the company to create the geopolymer.

 

The robot is being used in many applications for a different domain. The delivery robot was developed, and the battery was placed for the power source. Considering the abnormal condition/situation during the disaster period, energy is a critical issue for the robot. To overcome this condition, three kinds of power sources were identified such as (i) direct energy, (ii) solar energy and (iii) flywheel storage energy. All three power systems were designed and found that the delivery robot can be operated without any interruption with these power sources. The Flywheel energy storage system was fabricated and tested with the delivery robot. With these identified energy sources, it is possi- ble to operate the delivery robot without any external supply. It can help in any disaster situation to do services to people using the delivery robot.

The geometrical structuring of a material to increase both physical and mechanical qualities is known as Severe plastic deformation (SPD). To obtain superior mechanical qualities, the co-channel angular plastic deformation (ECAP) approach, which is an alternative to conventional plastic deformation, is applied and developed. When compared to previous procedures, a substan- tially smaller grain size is obtained as a result of applying large unit defor- mation to the part in one go and rearrangement of dislocations. The method that has the most potential to find itself as a field of application today is ECAP, which of the extreme plastic processes is the most well-known, giving the com- bination of ductility and high strength, which is a rare attribute in materials. The effect of ECAP, a type of extreme deformation of plastic, on the mechanical characteristics of 5083 aluminium alloy was examined in this work.