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Institution

Banaras Hindu University

EducationVaranasi, Uttar Pradesh, India
About: Banaras Hindu University is a education organization based out in Varanasi, Uttar Pradesh, India. It is known for research contribution in the topics: Population & Dielectric. The organization has 11858 authors who have published 23917 publications receiving 464677 citations. The organization is also known as: Kashi Hindu Vishvavidyalay & Benares Hindu University.


Papers
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Journal ArticleDOI
TL;DR: The Multiangle Implementation of Atmospheric Correction (MAIAC) is a new generic algorithm applied to collection 6 (C6) MODIS measurements to retrieve Aerosol Optical Depth (AOD) over land at high spatial resolution (1 km) as discussed by the authors.

129 citations

Journal ArticleDOI
TL;DR: Skin mucus of Cirrhinus mrigala, Labeo rohita, Catla catla, Rita rita and Channa punctata, inhabiting different ecological niches, was analyzed to characterize potential innate immune factors such as lysozyme, proteases, phosphatases, esterase and sialic acid.
Abstract: The innate immune system of fish is considered first line of defense against a broad spectrum of pathogens. Being a component of innate immunity and lying at the interface between fish and the aqueous environment, skin mucus plays a frontier role in protecting fish from infections. In the present study, skin mucus of Cirrhinus mrigala, Labeo rohita, Catla catla, Rita rita and Channa punctata, inhabiting different ecological niches, was analyzed to characterize potential innate immune factors such as lysozyme, proteases, phosphatases, esterase and sialic acid. The enzyme activities were high in bottom dweller species, C. punctata and C. mrigala, and low in clean water inhabiting species, L. rohita and C. catla. An inverse relationship was observed between the level of enzyme activity and the sialic acid content in these fish species. In R. rita, however, the levels of all factors were found to be low. Zymographic analysis with labeled Micrococcus lysodeikticus revealed three isoforms of lysozyme in C. punctata and two in each species, C. mrigala, L. rohita and C. catla. In R. rita, lysozyme could not be detected. Gelatin zymography revealed that serine and metalloproteases were the major mucus proteases in all fish species investigated. In addition, trypsin-like protease and Ca++-specific serine proteases were observed in skin mucus. Increased knowledge of these parameters could be useful in understanding the role of skin mucus in the innate immune system of fish species inhabiting different ecological niches.

129 citations

Journal ArticleDOI
TL;DR: In this article, carboxylated multiwalled carbon nanotubes (c-MWCNTs) electrophoretically deposited onto indium tin oxide (ITO) glass have been functionalized with monoclonal aflatoxin B1 antibodies (anti-AFB1).
Abstract: We report results of studies relating to the development of an electrochemical immunosensor based on carboxylated multiwalled carbon nanotubes (c-MWCNTs) electrophoretically deposited onto indium tin oxide (ITO) glass. This c-MWCNTs/ITO electrode surface has been functionalized with monoclonal aflatoxin B1 antibodies (anti-AFB1) for the detection of aflatoxin-B1 using electrochemical technique. Electron microscopy, X-ray diffraction and Raman studies suggest successful synthesis of c-MWCNTs and the Fourier transform infra-red spectroscopic (FT-IR) studies reveal its carboxylic functionalized nature. The proposed immunosensor shows high sensitivity (95.2 μA ng−1 mL cm−2), improved detection limit (0.08 ng mL−1) in the linear detection range of 0.25–1.375 ng mL−1. The low value of association constant (0.0915 ng mL−1) indicates high affinity of immunoelectrode towards aflatoxin (AFB1).

129 citations

Journal ArticleDOI
TL;DR: The results suggest that this dual mode phosphor could be an exceptional choice for next generation luminescence-based temperature sensing devices as well as in advanced display devices.
Abstract: A dual mode rare-earth based oxide phosphor (Y0.977Yb0.02Er0.003NbO4), demonstrating both down conversion (DC) and upconversion (UC) emission, has been developed using a facile solid state reaction method which can be easily scaled-up for large quantities. In the DC studies, the material exhibits a strong blue emission with a long decay time (4.36 μs), corresponding to the charge transfer band of [NbO4]3− under UV excitation (262 nm), and a green emission of the Er3+ ions under blue (379 nm) excitation. Furthermore, it has been noticed that under infrared (976 nm) excitation, this phosphor shows strong green and red emission along with relatively weak emission bands in the UV-blue and IR regions, which confirm the compatibility of this phosphor for UC too. In the UC emission, the 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 transitions of the Er3+ ion portray a temperature dependent behaviour and have been used for temperature sensing (optical thermometry) using the fluorescence intensity ratio (FIR) method. The maximum sensitivity is found to be 0.0073 K−1 at 473 K, which is better in comparison with other host matrixs reported so far. The results suggest that this dual mode phosphor could be an exceptional choice for next generation luminescence-based temperature sensing devices as well as in advanced display devices.

129 citations


Authors

Showing all 12110 results

NameH-indexPapersCitations
Ashok Kumar1515654164086
Rajesh Kumar1494439140830
Prashant Shukla131134185287
Sudhir Malik130166998522
Vijay P. Singh106169955831
Rakesh Agrawal105668107569
Gautam Sethi10242531088
Jens Christian Frisvad9945331760
Sandeep Kumar94156338652
E. De Clercq9077430296
Praveen Kumar88133935718
Shyam Sundar8661430289
Arvind Kumar8587633484
Padma Kant Shukla84123235521
Brajesh K. Singh8340124101
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202399
2022351
20211,606
20201,336
20191,162
20181,053