Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Kiran Gupta is active.

Publication


Featured researches published by Kiran Gupta.


Beilstein Journal of Nanotechnology | 2013

Photocatalytic antibacterial performance of TiO2 and Ag-doped TiO2 against S. aureus. P. aeruginosa and E. coli

Kiran Gupta; R. P. Singh; Ashutosh Pandey; Anjana Pandey

Summary This paper reports the structural and optical properties and comparative photocatalytic activity of TiO2 and Ag-doped TiO2 nanoparticles against different bacterial strains under visible-light irradiation. The TiO2 and Ag-doped TiO2 photocatalysts were synthesized by acid catalyzed sol–gel technique and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV–vis spectroscopy and photoluminescence (PL). The XRD pattern revealed that the annealed sample of TiO2 has both anatase and rutile phases while only an anatase phase was found in Ag-doped TiO2 nanoparticles. The decreased band-gap energy of Ag-doped TiO2 nanoparticles in comparison to TiO2 nanoparticles was investigated by UV–vis spectroscopy. The rate of recombination and transfer behaviour of the photoexcited electron–hole pairs in the semiconductors was recorded by photoluminescence. The antimicrobial activity of TiO2 and Ag-doped TiO2 nanoparticles (3% and 7%) was investigated against both gram positive (Staphylococcus aureus) and gram negative (Pseudomonas aeruginosa, Escherichia coli) bacteria. As a result, the viability of all three microorganisms was reduced to zero at 60 mg/30 mL culture in the case of both (3% and 7% doping) concentrations of Ag-doped TiO2 nanoparticles. Annealed TiO2 showed zero viability at 80 mg/30 mL whereas doped Ag-TiO2 7% showed zero viability at 40 mg/30 mL culture in the case of P. aeruginosa only.


Tropical Doctor | 2007

Filarial pleural effusion.

Nisha Marwah; Pawan Singh; Sunita Singh; Rajnish Kalra; Manav Manchanda; Kiran Gupta

A 30-year-old man from Bihar (a north-eastern state in India) presented with complaints of breathlessness, a dry cough and left-sided chest pain for the previous 15 days. On physical examination, left-sided pleural effusion was present and vocal resonance was decreased. On clinical investigation, haemogram showed haemoglobin 10 g%, total leucocyte count 8700/mm and 14% eosinophils on differential leucocyte count. Erythrocyte sedimentation rate was 20mm in the first hour by Westergren method and Mx test was negative. Chest X-ray revealed left-sided pleural effusion and prominent broncho-alveolar markings. Ultrasonography thorax also revealed left-sided pleural effusion. Diagnostic pleural tap was performed. Straw-coloured, blood-stained fluid was aspirated and subjected to biochemical, microbiological and cytological examinations. Protein was 5.0 gm/dL and sugar 110mg/ dL. Aerobic and anaerobic cultures did not grow any organism (Figure 1). The microscopic examination of pleural fluid after centrifugation showed numerous larvae of Wuchereria bancrofti. Peripheral blood film examination did not reveal any microfilariae, diurnal as well as nocturnal, on three occasions.


Zeitschrift für Naturforschung B | 2014

Synthesis and Structure of an Aluminum Bis(3-chloropentanedionate) Isopropoxide: [Al(µ-OiPr)(3-Clacac)2]2

Kiran Gupta; Peter Mayer; Ashutosh Pandey

1A [Al(OiPr)3]4 was reacted at ambient temperature with 3-chloropentanedione (3-ClacacH) in 1 : 1 molar ratio in toluene, to obtain the mono-substituted product. However, the bis-substituted dinuclear tetrakis(3-chloropentanedionato)-di-m-isopropoxy-dialuminum(III) [Al(μ-OiPr)(3-Clacac)2]2 () was isolated in 46% yield upon aging of the reaction mixture at −10 °C. The supernatant upon aging yielded a crop of tris-3-chloroacetylacetonate Al(3-Clacac)3·H2O (1) in 13% yield. Complexes 1A (monoclinic, space group P21/c with Z = 2) and 1(cubic, space group P43n with Z = 8) were characterized by elemental analyses, NMR and IR spectroscopy and single-crystal X-ray crystallography. Graphical Abstract Synthesis and Structure of an Aluminum Bis(3-chloropentanedionate) Isopropoxide: [Al(μ-OiPr)(3-Clacac)2]2


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2017

Energy transfer and colour tunability in UV light induced Tm3 +/Tb3 +/Eu3 +: ZnB glasses generating white light emission

V. Naresh; Kiran Gupta; C. Parthasaradhi Reddy; Byoung S. Ham


World Journal of Nano Science and Engineering | 2012

Synthesis and Characterization of Eu +++ Doped Y 2 O 3 (Red Phosphor) and Tb +++ Doped Y 2 O 3 (Green Phosphor) by Hydrothermal Processes

Ravindra P. Singh; Kiran Gupta; Ashutosh Pandey; Anjana Pandey


Biomass & Bioenergy | 2015

Effect of nanosized TiO2 on photofermentation by Rhodobacter sphaeroides NMBL-02.

Anjana Pandey; Kiran Gupta; Ashutosh Pandey


Transition Metal Chemistry | 2013

Synthesis and structural characterization of some titanium butoxides modified with chloroacetic acids

Subia Ambreen; Kiran Gupta; Sadhana Singh; Dinesh Gupta; Stéphane Daniele; N. D. Pandey; Ashutosh Pandey


Cellular and Molecular Biology | 2017

Synthesis, characterization of nano-sized anatase TiO2 and its adsorption behaviour for environmental contaminant

Kiran Gupta; Ashutosh Pandey; R. P. Singh


World Journal of Nanoscience and Engineering | 2012

Synthesis and characterization of Eu+++ doped Y2O3 and Tb+++ doped Y2O3 by hydrothermal process

P. Ravindra Singh; Kiran Gupta; Ashutosh Pandey; Anjana Pandey


Archive | 1999

Problem of Tuberculosis Among Children in the Community : Situation Analysis in the Perspective Of Tuberculosis in India

A. K. Chakarborty; V. K. Chadha; M. S. Krishna Murty; A. N. Shashidhara; S. Jagannath; V. Magesh; Rajeev Sen; Nisha Marwah; Kiran Gupta; Sanjay Marwah; Ritu Arora; K. Jain

Collaboration


Dive into the Kiran Gupta's collaboration.

Top Co-Authors

Avatar

Ashutosh Pandey

Motilal Nehru National Institute of Technology Allahabad

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

R. P. Singh

Motilal Nehru National Institute of Technology Allahabad

View shared research outputs
Top Co-Authors

Avatar

Sadhana Singh

Motilal Nehru National Institute of Technology Allahabad

View shared research outputs
Top Co-Authors

Avatar

Subia Ambreen

Motilal Nehru National Institute of Technology Allahabad

View shared research outputs
Top Co-Authors

Avatar

V. Naresh

Sri Venkateswara University

View shared research outputs
Top Co-Authors

Avatar

Dinesh Gupta

International Centre for Genetic Engineering and Biotechnology

View shared research outputs
Top Co-Authors

Avatar

Stéphane Daniele

Centre national de la recherche scientifique

View shared research outputs
Top Co-Authors

Avatar

Byoung S. Ham

Gwangju Institute of Science and Technology

View shared research outputs
Researchain Logo
Decentralizing Knowledge