Avinash C Pandey

Professor, University of Allahabad · NAC, KBCAOS, MNSCSS

Ilmenite is a widespread accessory mineral in tonalite-trondhjemite-granodiorite (TTG) gneisses of the Banded Gneissic Complex (BGC-I) from the Aravalli Craton. Studied ilmenites are found as an inclusion in micas, magnetite and has low Mg (~0.00 – 0.21wt%) and high Mn contents (3.94 –10.29 wt%) in contrast to the ilmenites from igneous rocks. Stud...

Most dynamical models under-predict Indian summer monsoon rainfall (ISMR) variability despite showing greater dependency on external forcings in comparison with observations. In this study, we first highlight the observed patterns of externally forced rainfall variability over the Indian Ocean during boreal summer and then investigate the mechanism...

Breast cancer is the most prominent type of cancer among females and treatment through chemotherapy generates serious side effects too along with the cure. Hence, the use of natural compounds as promising therapeutic agents is emerging as an effective alternate due to their low toxicity and bio-friendly nature. One such bioactive compound is baical...

We present the morphological evolution and fractal characterizations of CaF 2 thin-film surfaces modified by bombardment with 100 MeV Au ⁺⁸ ions at various fluences. Atomic force microscopy (AFM) combined with line profile and two-dimensional power spectral density (2D-PSD) analysis was utilized to investigate the evolution of surface morphology as...

The Bastar Craton of the southern part of Central Indian shield is endowed with the presence of magmatic rocks in form of mafic magmatism (dominantly dykes, dyke swarms and sills) in the areas where they are exposed along with the basement rocks (Amgaon and Tirodi gneissic complex). The equivalent volcanic rocks occur in the supracrustal belts, whe...

This study investigates in detail the laser-mediated upconversion emission and temperature-sensing capability of (Ca 0.99−a Yb 0.01 Er a)TiO 3. Samples were prepared at different concentrations to observe the effect of erbium on upconversion while increasing its concentration and keeping all the other parameters constant. Doping is a widespread tec...

We present the morphological evolution and fractal characterization of CaF2 thin film surfaces modified by bombardment with 100 MeV Au+8 ions at various fluences. Atomic force microscopy (AFM) combined with line profile and two-dimensional power spectral density (2D-PSD) analysis was utilized to investigate the evolution of surface morphology as a...

Antibiotic residues in the aquatic environment are one of the major concerns as they pose serious pollution problems like inducing bacterial resistance, which can make medicinal treatment inactive, and constitute serious threat to public health. The present research discloses degradation of three most commonly used antibiotics, i.e., amoxicillin (A...

Bacteria employ numerous resistance mechanisms against structurally distinct drugs by the process of multidrug resistance. A study was planned to discover the antibacterial potential of a graphene oxide nanosheet (GO), a graphene oxide–zinc oxide nanocomposite (GO/ZnO), a graphene oxide-chitosan nanocomposite (GO–CS), a zinc oxide decorated graphen...

Baicalein-loaded cinnamon essential oil nanoemulsion (BaiCN) was formulated to enhance the solubility and oral bioavailability of the drug, and its potential combined anticancer efficacy with cinnamon oil was evaluated against the MDA-MB-231 breast cancer cell line. The formulation was optimized using full factorial design, and the optimized formul...

The present study is aimed to formulate baicalein loaded mixed micelles to enhance the solubility and oral bioavailability. Baicalein encapsulated D-α-tocopherol polyethylene glycol 1000 succinate (TPGS) and pluronic F127 (F127) combined micelles were prepared and investigated for anticancer effect. The optimized formulation contains 25.04 ± 0.24 n...

As part of seamless modeling strategy the ocean is increasingly becoming an important component of weather and climate forecasting systems across time scales. While the skill of sea surface temperatures (SSTs) at long-range forecasts is widely documented, few studies exist on the representation of evolving SST biases at shorter time-scales in a glo...

In the present investigation, Nickle and Cobalt (Transition metals) doped ZnS Nanocrystals were synthesized by wet chemical route using methanol water binary mixture as a solvent. 1-20% doped percent of dopant were used. The synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area elec...

In last few decades, pharmaceutical waste management emerged as one of major environmental concern. These contaminants have shown their severe impact on living being. Several methods for their treatment such as UV degradation, nano-filtration, reverse osmosis and Photocatalysis are being used. Photocatalysis is a favourable and environmentally safe...

Nanobiotechnology is currently operating in various science domains and is based on nanomaterials and devices at the nanometer scale (1–100 nm). Nanomaterials have been a common material for developing new cutting-edge applications in communications, biosensing, energy storage, data storage, optics, transmission, environmental protection, cosmetics...

In the present report, the surface erosion of the thin films of barium fluoride (BaF2) deposited on different substrates (Glass, Silicon, and Aluminum) using the electron beam evaporation method, has been investigated under swift heavy ions irradiation employing experimental and theoretical aspects. The experiments have been carried out at room tem...

In present report, CaTi4O9: 1 at% Er³⁺, 1 at% Yb³⁺ phosphors have been synthesized via sol-gel method and reported herein for its temperature sensing performance. XRD spectra confirms high crystallinity and successful inclusion of rare earth (RE) ions into CaTi4O9 as the dopant ions do no induce any change in the peak position. The X-ray diffractio...

In the present article SiO2/Si layers of thickness 200 nm were implanted with 150 keV Ge ions with different fluences varying from 2.5 × 1016 to 7.5 × 1016 ions/cm2. The implantation-induced disorder was removed via high temperature annealing method in Ar ambience. Transmission electron microscopy (TEM) measurement confirmed the presence of embedde...

Au-Fullerene nanocomposite thin films synthesized by thermal co-evaporation method are irradiated by low energy (2.6 MeV) Ar ions at fluence ranging from 1 × 10¹⁴ ions-cm⁻² to 3 × 10¹⁵ ions-cm⁻². To avoid the retrogression of attributes of fullerene subjected to presence of Au, selected concentration and thickness of gold film is kept very small. U...

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Mustard aphid, Lipaphis erysimi (Kaltenbach), is the most serious pest of Rapeseed-Mustard which is known to be responsible for a tremendous loss in yield and oil content, under various agro-climatic conditions of India. Information support on aphid occurrence and intensity is necessary for effective management by the farmers in the mustard-growing...

Mustard Aphid, Lipaphis erysimi (Kaltenbach) is the most serious sucking pest of rapeseed-mustard which causes huge avoidable losses in yield and oil content, under various agro-climatic conditions of India. An effort was made to study its weather pest relationship using data from various Directorate of Rapeseed-Mustard Research (DRMR) centres, tar...

An electron cyclotron resonance (ECR) based medium energy ion beam facility, known as High Fluence Ion Beam Facility (HFIBF), is commissioned at Nanotechnology Application Centre, University of Allahabad. The facility is a user facility for ion beam driven materials synthesis, properties modification and their characterizations. The source can be o...

Tissue engineering technologies involving growth factors have produced one of the most advanced generations of diabetic wound healing solutions. Using this approach, a nanocomposite carrier was designed using Poly(d,l-lactide-co-glycolide) (PLGA)/Gelatin polymer solutions for the simultaneous release of recombinant human epidermal growth factor (rh...

We report evolution of the surface and wetting behavior of Barium fluoride (BaF 2 ) thin films under the effect of swift heavy ion (SHI) irradiation at different fluences. The analogy of this study may be used may be used for the development of dust resistant fabric technology for rural area. The ion irradiation has been performed at normal inciden...

Fungal infections are one of the most important health issues facing by people since a long time. The objective of the present study was to evaluate antifungal activity of a prepared blended cinnamon oil and usnic acid nanoemulsion (CUN) using candidiasis and dermatophytosis models both in vitro and in vivo. In vitro activity was performed using cu...

CaF2 thin films of three different thicknesses 50nm, 100nm and 150nm have been deposited on three different substrates Si, Al and glass by electron beam evaporation technique and have been irradiated by 100 MeV Au⁺⁹ ions. Average grain size in each film has been calculated by using Debye Scherrer’s formula and strain has been calculated using Willi...

Graphene “The novel carbon nano-trope” tailors auspicious platform for designing antimicrobial regimen by virtue of its conspicuous molecular interaction with the microorganism. In this work, Tolnaftate (Tf), an antifungal drug, was mingled with Graphene nanoplatelets (Gn) to develop composite (Tf–Gn) via the wet chemical route, embedded in a bioco...

A coupled ocean sea ice model is used to carry out sensitivity experiments to decipher the respective roles of wind, heat and freshwater flux forcings in changing the sea ice variability (concentration, volume, salinity, and drift speed) of the Antarctic region with special emphasis near the Indian Stations, Maitri [11.7°E; 70.7°S] and Bharati [76....

The importance of ice shelf in realistic simulation of the ocean sea ice variability is demonstrated in the Southern Ocean region [9 E - 78 E; 58 S - 71 S] covering the Indian Antarctic Stations Maitri [11.7 E; 70.7 S] and Bharati [76.1 E; 69.4 S] during 2002–2012. A coupled ocean sea-ice modeling with ice shelf is carried out for this purpose. It...

In this work, we report the synthesis of cuprous oxide (Cu2O) nanoparticles modified vertically oriented aligned titanium dioxide (TiO2) nanotube arrays through wet chemical treatment of TiO2 nanotubes and their multi-functional application as enhanced photo electrochemical and hydrogen generation. The synthesized samples were characterized by X-ra...

The objective of the present study was to prepare and characterize thermodynamically stable blended cinnamon oil and usnic acid nanoemulsion (CUN). CUN was prepared using titration method by selecting different components (oil, surfactant and co-surfactant) on the basis of solubility and emulsification ability. The drug-loaded nanoemulsions (NEs) w...

Variously synthesized and fabricated Bi2Se3 nanoparticles (NPs) have recently been explored for their theranostic properties. Herein, we investigated the long term in-vivo biodistribution of Bi2Se3 NPs and systematically screened its immune-toxic potential over lungs and other secondary organs post intratracheal instillation. X-Ray CT scan and ICP...

The weekly aphid population on timely sown mustard crop and daily weather parameters recorded at ICAR-Directorate of Rapeseed–Mustard Research, Bharatpur and Hisar stations, during rabi seasons of 2003-04 to 2013-14 were used to develop forewarning model for aphid. In most of the cases, the appearance of population and its peak activity occurred du...

Dermatophytosis, topical fungal infection is the most common cause of skin bug in the world, generally underestimated and ignored. It is commonly caused by immensely mortifying and keratinophilic fungal eukaryotes which invade keratinized tissues and generate different tinea diseases in Mediterranean countries. We herein fabricated nanofibers/scaff...

Nanotechnology is basically focused on the fabrication of nanomaterials based on the manipulation, control, and integration of atoms and molecules at nanometer scale, due to which there develops sudden change in the size-dependent properties and functions. We have to integrate chemistry, physics and biology to form materials, structures, components...

Diabetic wounds are susceptible to microbial infection. The treatment of these wounds requires a higher payload of growth factors. With this in mind, the strategy for this study was to utilize a novel payload comprising of Eudragit RL/RS 100 nanofibers carrying the bacterial inhibitor gentamicin sulphate (GS) in concert with human epidermal growth...

The oil production in oilseed Brassica (OSB) crop is adversely affected by mustard aphids significantly. The population dynamics of these sucking pests seems to be highly influenced by prevailing weather parameters especially thermal conditions. Keeping this hypothesis, an attempt had been made to study the effect of weather parameters on aphid pop...

Surface re-organization in nanodimensional fluoride (LiF and BaF2) thin films is observed under dense electronic excitation produced by swift heavy ion (SHI) irradiation. The irradiation was performed at an angle less than 15º with respect to film surface while keeping the sample at liquid nitrogen temperature. The surface of irradiated samples was...

Due to their unique chemical, thermal, electronic and photonic properties, low -dimensional transition metal oxides, especially NiO, have attracted great deal of attention for potential applications in a wide range of technologies, such as, sensors, electrochromic coatings and self-healing materials. However, their synthesis involves multi-step com...

The present study was undertaken to evaluate the effects of silver nitrate (AgNO3) and biosynthesized silver nanoparticle (AgNps) on Cucumis sativus L seedlings. Results indicated that both the forms of silver significantly reduced the growth which may be accompanied due to increased accumulation of silver in plants (4708.2 ± 108.75 mg/kg). Both th...

200 nm thick SiO2 layers grown on Si substrates and Ge ions of 150 keV energy were implanted into SiO2 matrix with Different fluences. The implanted samples were annealed at 950 C for 30 minutes in Ar ambience. Topographical studies of implanted as well as annealed samples were captured by the atomic force microscopy (AFM). Two dimension (2D) multi...

Barrium fluoride (BaF2) thin films were prepared by electron beam evaporation technique at room temperature, on glass, Silicon and Aluminum substrates having thickness of 20 nm each. Its structural property and surface morphology were studied using glancing angle X-ray diffraction (GAXRD) and atomic force microscopy (AFM) respectively. It was found...

Diabetic wounds and ulcers have ubiquitous occurrence worldwide and they exhibit complex perturbations on the socioeconomical structure along with patient compliance. Pathophysiological factors, prolonged existence of infections, and progressively worsening medical conditions cause delayed healing of diabetic wounds. Recent developments have been m...

The present study investigates ameliorative effect of nitric oxide (NO) against zinc oxide nanoparticles (ZnONPs) phytotoxicity in wheat seedlings. ZnONPs exposure hampered growth of wheat seedlings which was coincided with reduced photosynthetic efficiency (Fv/Fm and qP) due to increased accumulation of zinc (Zn) in xylem and phloem saps. However,...

The first principle comparative study of a novel single Al sheet embedded MgO and pure MgO barrier having Fe electrodes magnetic tunnel junction has been presented. Al embedded MgO is reported to provide enhanced spin polarised tunnelling current due to increase of spin-polarized density of states at Fermi energy in the barrier region. This novel M...

Photoelectrochemical splitting of water for chemical fuel production utilizing solar energy is regarded as an effective strategy to resolve crisis of energy. Self assembled and highly ordered titanium dioxide nanotube arrays offers considerable interest for hydrogen generation, since ordered structural design of titania nanotubes provides a unidire...

In the present work, we report the synthesis and characterization of Eu³⁺ doped Gd2S3 nanoparticles, a potential candidate for T1-weighted MRI contrast agents and molecular markers. Eu³⁺ doped Gd2(1-x)S3:Eux (x = 0.0, 0.02, 0.04 and 0.06) were synthesized by a chemical route by varying the Eu concentration. X-ray diffraction and scanning electron m...

Influence of the swift heavy ions (SHIs) at various ion fluences in nanodimensional polycrystalline fluoride thin films (LiF, CaF2 and BaF2) were investigated by glancing angle X-ray diffraction (GAXRD), complemented by atomic force microscopy (AFM). Nano-grain fragmentation is observed with increasing ion fluences as evident from the increase of t...

The regulation of cellular activities in a controlled manner is one of the most challenging issues for drug targeting. Nanoparticles have the potential of becoming useful tools for controlling cell signalling pathways in a space and time selective fashion. Here, developed magnetic nanoparticles that turn on apoptosis cell signalling by using a magn...

Sustainable agriculture is vital in today's world as it offers the potential to meet our ever-increasing agricultural needs, something that conventional agriculture fails to do. Drought stress is considered to be one of the most important abiotic factors limiting plant growth and yield. A significant decrease in crop yield has been reported in both...

Understanding the adverse impact of nanoparticles in crop plants has emerged as one of the most interesting fields of plant research. Therefore, this study has been conducted to investigate the impact of silver nanoparticles (AgNps) on Pisium sativum seedlings. Besides this, we have also tested whether nitric oxide (NO) is capable of reducing toxic...

During in-vitro anti-dermatophytic study, biosynthesized silver nanoparticles from leaves of Ajuga bracteosa Wall Ex Benth showed excellent antifungal efficacy against selected fungal pathogens. The 420 nm absorption maxima were confirmed for biosynthesized AgNPs while the particle size of biosynthesized AgNPs were found to be 166.4 nm with a polyd...

The vibrational properties of alkaline-earth metal fluoride clusters (BaF2)n (n=1-6) are investigated in the framework of density functional theory. The calculated Raman and Infrared (IR) spectra reveals shift in Raman and IR peak position towards lower frequency region with the increase in the cluster size. Further the calculated spectra have been...

Background Malassezia commensal yeasts along with multitude of antigens have been found to be associated with various skin disorders including Pityriasis versicolor (PV). Amongst them Mala s1, a 37 kDa protein has been proved to be a major allergen reacting with a large panel of sera. However, there exists no therapeutic alternative to combat such...

Present exploration deals with the therapeutic perspective of methyl gallate isolated from the leaf extract of Acacia nilotica (L.) Delile in contrast to food-borne bacterial pathogen's viz., Escherichia coli, Klebsiella pneumoniae, Salmonella typhimurium, Pseudomonas aeruginosa and Staphylococcus aureus with their evolutionary succession. The extr...

Metabolomics is one of the most emerging fields of modern biology. Further this emergence is divided in to two parts. Firstly, due to metabolites production under stressed condition. It also assists plant to survive during stress. Moreover, the total metabolome generated in stressed condition help to sketch the gene expression when mutation occurre...