scispace - formally typeset
Search or ask a question
Institution

Maharshi Dayanand University

EducationRohtak, Haryana, India
About: Maharshi Dayanand University is a education organization based out in Rohtak, Haryana, India. It is known for research contribution in the topics: Photoluminescence & Phosphor. The organization has 1561 authors who have published 2845 publications receiving 33699 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: Spectroscopic analysis demonstrates that the presence of GF hybrid structures facilitates strong polarization due to the formation of a solid-state charge-transfer complex between graphene and polyaniline, which leads to the high microwave absorption properties.
Abstract: The development of high-performance shielding materials against electromagnetic pollution requires mobile charge carriers and magnetic dipoles. Herein, we meet the challenge by building a three-dimensional (3D) nanostructure consisting of chemically modified graphene/Fe3O4(GF) incorporated polyaniline. Intercalated GF was synthesized by the in situ generation of Fe3O4 nanoparticles in a graphene oxide suspension followed by hydrazine reduction, and further in situ polymerization with aniline to form a polyaniline composite. Spectroscopic analysis demonstrates that the presence of GF hybrid structures facilitates strong polarization due to the formation of a solid-state charge-transfer complex between graphene and polyaniline. This provides proper impedance matching and higher dipole interaction, which leads to the high microwave absorption properties. The higher dielectric loss (e′′ = 30) and magnetic loss (μ′′ = 0.2) contribute to the microwave absorption value of 26 dB (>99.7% attenuation), which was found to depend on the concentration of GF in the polyaniline matrix. Moreover, the interactions between Fe3O4, graphene and polyaniline are responsible for superior material characteristics, such as excellent environmental (chemical and thermal) degradation stability and good electric conductivity (as high as 260 S m−1).

478 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed new ratio and product type estimators for estimating the mean of the finite population using information on single auxiliary variable and the bias and mean square error of these estimators have been obtained.
Abstract: This paper proposes new ratio and product type estimators for estimating the mean of the finite population using information on single auxiliary variable. The bias and mean square error of these estimators have been obtained. These estimators are compared for their precision with usual mean per unit, ratio and product estimators and are found to be more efficient in many practical situations. Further, it is shown that these estimators reduce to regression estimator.

344 citations

Journal ArticleDOI
TL;DR: In this article, various types of problems in lake which cause nutrient enrichment in lake have been reviewed and it is recommended that pollution prevention and water re-use should be adopted in combination with the recycling of nutrients in controlled urban agriculture.
Abstract: Ever increasing population, urbanization and modernization are posing problems of sewage disposal and contamination of surface waters like lakes. Natural water gets contaminated due to weathering of rocks, leaching of soils and mining processing, etc. Various types of problems in lake which cause nutrient enrichment in lake have been reviewed. Land use change and longer growing seasons could increase the use of fertilizers with subsequent leaching to watercourses, rivers and lakes, increasing the risk of eutrophication and loss of biodiversity. Water quality can be assessed by various parameters such as BOD, temperature, electrical conductivity, nitrate, phosphorus, potassium, dissolved oxygen, etc. Heavy metals such as Pb, Cr, Fe, Hg, etc. are of special concern because they produce water or chronic poisoning in aquatic animals. Harmful algal blooms are becoming increasingly common in freshwater ecosystems globally. Pollution by plastic debris is an increasing environmental concern in water bodies, where it affects open-water, shoreline and benthic environments. Surface water densities of plastics are as high as those reported for areas of litter accumulation within oceanic gyres. Different methods have been used to analyse the water quality of lake such as Hyperion, water quality index and hazard quotient. It is recommended that pollution prevention and water re-use should be adopted in combination with the recycling of nutrients in controlled urban agriculture.

338 citations

Journal ArticleDOI
TL;DR: A brief overview of the microbial enzymes, different enzymes techniques (genetic engineering and immobilization of enzymes) and nanozymes involved in bioremediation of toxic, carcinogenic and hazardous environmental pollutants are described.

334 citations

Journal ArticleDOI
TL;DR: This finding suggests that PUT might be activating antioxygenic enzymes and elevating antioxidants there by controlling free radical generation, hence preventing membrane peroxidation and denaturation of biomolecules resulting into improved seedling growth under salinity.

331 citations


Authors

Showing all 1637 results

NameH-indexPapersCitations
Rajesh Kumar1494439140830
Anil Kumar99212464825
Amit Kumar65161819277
Sandeep Singh5267011566
Chandra Shekhar Pundir452125730
Kiran Dip Gill411335011
Pratyoosh Shukla391944373
Sarvajeet Singh Gill3611411686
Bijender Singh31982223
Balasubramanian Narasimhan301683417
Jaya Parkash Yadav27982228
Nidhi Chauhan271072319
Dev Karan27542407
Ashok Munjal26772121
Pawan K. Jaiwal26791865
Network Information
Related Institutions (5)
University of Delhi
36.4K papers, 666.9K citations

92% related

Panjab University, Chandigarh
18.7K papers, 461K citations

92% related

Aligarh Muslim University
16.4K papers, 289K citations

92% related

Banaras Hindu University
23.9K papers, 464.6K citations

92% related

Savitribai Phule Pune University
10.6K papers, 216K citations

91% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202342
202265
2021360
2020375
2019259
2018240