SRM University

About: SRM University is a education organization based out in Chennai, India. It is known for research contribution in the topics: Computer science & Population. The organization has 10787 authors who have published 11704 publications receiving 103767 citations. The organization is also known as: Sri Ramaswamy Memorial University.

Influence of micro size titanium powder-mixed dielectric medium on surface quality measures in EDM process

Abstract: The enhancement of the surface quality measures is still attracting great research attentions in electrical discharge machining. In the present investigation, an analysis was made to improve the surface performance measures in EDM process with different tool electrodes such as titanium, copper, and graphite electrodes under dielectric medium mixed with micro size titanium particles. The surface roughness, hardness, white layer thickness, crack formation, and surface topography were considered as surface quality measures. From the experimental investigation, it has been observed that surface hardness could be improved significantly with titanium powder-mixed dielectric medium due to its ability of changing conductivity of machining zone with copper tool electrode. The electrical and thermal conductivity of tool electrode and powder materials can strongly affect the quality of the machined surface in EDM process.

Analysis of Water Pollution Using Different Physicochemical Parameters: A Study of Yamuna River

Abstract: The Yamuna has become one of the most polluted rivers in India as well as in the world because of the high-density population growth and speedy industrialization. The Yamuna is mainly polluted in the downstream of New Delhi, which dumps a large portion of its waste into the river but now its water quality is also degraded year by year at Dehradun. River Yamuna plays a very crucial role in Dehradun’s geography. River Yamuna is severely polluted and needs urgent revival. Uttarakhand has always been a tourist spot and experiences heavy tourists perennially and Dehradun being the capital city also bears the brunt. River Yamuna is polluted in Dehradun due to exceptional tourist activity, poor sewage facilities, and insufficient wastewater management amenities. A lot of actions and measures have been taken by the government so that pollution can be reduced but often fail because of the unsupportive population. The measurement of the quality can be done by water quality assessment. In this study, the water quality index was calculated for river Yamuna using monthly measurements of twelve physicochemical parameters at Dehradun. Trend analysis for river water pollution has been performed using different parameters for the years 2019 to 2023 at Dehradun. The study shows that the values of four parameters named Temperature, Total Coliform, TDS, and Hardness are increasing yearly; whereas the values of pH and DO are not rising heavily. The considered Physico-chemical parameters for the study are TDS, Chlorides, Alkalinity, DO, Temperature, COD, BOD, pH, Magnesium, Hardness, Total Coliform, and Calcium. The values of the considered physicochemical parameters have been monitored using various monitoring stations installed by the Central Pollution Control Board (CPCB), India.

Giant Terahertz-Wave Absorption by Monolayer Graphene in a Total Internal Reflection Geometry

Abstract: We experimentally demonstrated significant enhancement of terahertz-wave absorption in monolayer graphene by simply sandwiching monolayer graphene between two dielectric media in a total internal reflection geometry. In going through this structure, the evanescent wave of the incident terahertz beam interacts with the sandwiched graphene layer multiple (up to four) times at varying incidence angles. We observed extremely large attenuation (up to ∼70% per reflection), especially for s-polarized radiation. The experimental results are quantitatively consistent with our calculations, where we modeled the experiment as an electromagnetic wave reflection process in monolayer graphene. We also derived analytical expressions for the absorptance, showing that the absorptance is proportional to the amount of Joule heating on the graphene surface induced by the terahertz radiation.

The Arabidopsis stress responsive gene database.

Abstract: Plants in nature may face a wide range of favorable or unfavorable biotic and abiotic factors during their life cycle. Any of these factors may cause stress in plants; therefore, they have to be more adaptable to stressful environments and must acquire greater response to different stresses. The objective of this study is to retrieve and arrange data from the literature in a standardized electronic format for the development of information resources on potential stress responsive genes in Arabidopsis thaliana. This provides a powerful mean for manipulation, comparison, search, and retrieval of records describing the nature of various stress responsive genes in Arabidopsis thaliana. The database is based exclusively on published stress tolerance genes associated with plants.