Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
11,176
result(s) for
"Kumar, Rajesh"
Sort by:
Green public procurement strategies for environmental sustainability
\"This book addresses the challenges that different countries have faced in because of climate change, reasons of climate change, how public procurement can contribute to improve the world environment through green public procurement (GPP). it also discusses how green public procurement can be incorporated seamlessly in the procurement processes\"-- Provided by publisher.
Book
Role of MicroRNAs in Biotic and Abiotic Stress Responses in Crop Plants
MicroRNAs (miRNAs) are small non-coding endogenous RNAs (18–24 nucleotides) which regulate gene expression at posttranscriptional level either by degrading the target mRNA (plants) or by blocking the protein translation through binding with 3′ UTR of the target mRNA (animals). Though miRNAs are known to play key roles in animal development, miRNAs that are involved in plant developmental timing, cell proliferation, and several other physiological functions need to be investigated. In addition, plant miRNAs have been shown to be involved in various biotic (bacterial and viral pathogenesis) and abiotic stress responses such as oxidative, mineral nutrient deficiency, drought, salinity, temperature, cold (chilling), and other abiotic stress. miRNA expression profiling reveals that miRNAs which are involved in the progression of plant growth and development are differentially expressed during abiotic stress responses. The high-throughout techniques can provide genome-wide identification of stress-associated miRNAs under various abiotic stresses in plants. Various web-based and non-web-based computational tools facilitate in the identification and characterization of biotic/abiotic stress associated miRNAs and their target genes. In the future, miRNA-mediated RNA interference (RNAi) approach might help in developing transgenic crop plants for better crop improvement by conferring resistance against biotic (pathogens) as well as abiotic stress responses.
Journal Article
NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review
Highlights
Various synthetic methods for the synthesis of NiCo
2
O
4
nano-/microstructures in bare, doped, and composite/hybrid forms are reviewed.
Currents status and development prospects of NiCo
2
O
4
nano-/microstructure-based electrochemical biosensors for bioanalytes such as glucose, urea, and H
2
O
2
, along with condition governing the electrochemical biosensor parameters, are summarized.
Also provide an insight into the key challenges and future perspectives about point-of-care monitoring of bioanalytes using NiCo
2
O
4
nano-/microstructure-based biosensors.
Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo
2
O
4
mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo
2
O
4
materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo
2
O
4
nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo
2
O
4
as compared to corresponding individual metal oxides, viz. NiO and Co
3
O
4
, is attributed to the close intrinsic-state redox couples of Ni
3+
/Ni
2+
(0.58 V/0.49 V) and Co
3+
/Co
2+
(0.53 V/0.51 V). Biosensing performance of NiCo
2
O
4
is also significantly improved by making the composites of NiCo
2
O
4
with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co
3
O
4
, SnO
2
, MnO
2
; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo
2
O
4
are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined.
Journal Article
Renewable energy for sustainable development in India: current status, future prospects, challenges, employment, and investment opportunities
The primary objective for deploying renewable energy in India is to advance economic development, improve energy security, improve access to energy, and mitigate climate change. Sustainable development is possible by use of sustainable energy and by ensuring access to affordable, reliable, sustainable, and modern energy for citizens. Strong government support and the increasingly opportune economic situation have pushed India to be one of the top leaders in the world’s most attractive renewable energy markets. The government has designed policies, programs, and a liberal environment to attract foreign investments to ramp up the country in the renewable energy market at a rapid rate. It is anticipated that the renewable energy sector can create a large number of domestic jobs over the following years. This paper aims to present significant achievements, prospects, projections, generation of electricity, as well as challenges and investment and employment opportunities due to the development of renewable energy in India. In this review, we have identified the various obstacles faced by the renewable sector. The recommendations based on the review outcomes will provide useful information for policymakers, innovators, project developers, investors, industries, associated stakeholders and departments, researchers, and scientists.
Journal Article
A review on synthesis of graphene, h-BN and MoS2 for energy storage applications: Recent progress and perspectives
The significance of graphene and its two-dimensional (2D) analogous inorganic layered materials especially as hexagonal boron nitride (h-BN) and molybdenum disulphide (MoS
2
) for “clean energy” applications became apparent over the last few years due to their extraordinary properties. In this review article we study the current progress and selected challenges in the syntheses of graphene, h-BN and MoS
2
including energy storage applications as supercapacitors and batteries. Various substrates/catalysts (metals/insulator/semiconducting) have been used to obtain graphene, h-BN and MoS
2
using different kinds of precursors. The most widespread methods for synthesis of graphene, h-BN and MoS
2
layers are chemical vapor deposition (CVD), plasma-enhanced CVD, hydro/solvothermal methods, liquid phase exfoliation, physical methods etc. Current research has shown that graphene, h-BN and MoS
2
layered materials modified with metal oxide can have an insightful influence on the performance of energy storage devices as supercapacitors and batteries. This review article also contains the discussion on the opportunities and perspectives of these materials (graphene, h-BN and MoS
2
) in the energy storage fields. We expect that this written review article including recent research on energy storage will help in generating new insights for further development and practical applications of graphene, h-BN and MoS
2
layers based materials.
Journal Article
Formation of oxygen vacancies and Ti3+ state in TiO2 thin film and enhanced optical properties by air plasma treatment
Abstract This is the first time we report that simply air plasma treatment can also enhances the optical absorbance and absorption region of titanium oxide (TiO 2 ) films, while keeping them transparent. TiO 2 thin films having moderate doping of Fe and Co exhibit significant enhancement in the aforementioned optical properties upon air plasma treatment. The moderate doping could facilitate the formation of charge trap centers or avoid the formation of charge recombination centers. Variation in surface species viz. Ti 3+ , Ti 4+ , O 2− , oxygen vacancies, OH group and optical properties was studied using X-ray photon spectroscopy (XPS) and UV-Vis spectroscopy. The air plasma treatment caused enhanced optical absorbance and optical absorption region as revealed by the formation of Ti 3+ and oxygen vacancies in the band gap of TiO 2 films. The samples were treated in plasma with varying treatment time from 0 to 60 seconds. With the increasing treatment time, Ti 3+ and oxygen vacancies increased in the Fe and Co doped TiO 2 films leading to increased absorbance; however, the increase in optical absorption region/red shift (from 3.22 to 3.00 eV) was observed in Fe doped TiO 2 films, on the contrary Co doped TiO 2 films exhibited blue shift (from 3.36 to 3.62 eV) due to Burstein Moss shift.
Journal Article
Silver decorated CeO2 nanoparticles for rapid photocatalytic degradation of textile rose bengal dye
Abstract
High quality silver (Ag) decorated CeO
2
nanoparticles were prepared by a facile one-step chemical method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), High resolution transmission electron microscopy (HR-TEM), fourier transform infrared spectrometer (FT-IR), electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS), UV–Visible absorption (UV–Vis), photoluminescence (PL) and thermogravimetric analysis. The decoration of Ag on CeO
2
surface was confirmed by XRD, EPR and HR-TEM analysis. Harmful textile pollutant Rose Bengal dye was degraded under sunlight using the novel Ag decorated CeO
2
catalyst. It was found that great enhancement of the degradation efficiency for Ag/CeO
2
compared to pure CeO
2
, it can be ascribed mainly due to decrease in its band gap and charge carrier recombination rate. The Ag/CeO
2
sample exhibited an efficient photocatalytic characteristic for degrading RB under visible light irradiation with a high degradation rate of 96% after 3 h. With the help of various characterizations, a possible degradation mechanism has been proposed which shows the effect of generation of oxygen vacancies owing to the decoration of Ag on the CeO
2
surface.
Journal Article