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Varun,National Institute of Technology Hamirpur | Sharma A.,Lovely Professional University | Shree V.,National Institute of Technology Hamirpur | Nautiyal H.,THDC Institute of Hydropower Engineering and Technology
Sustainable Cities and Society | Year: 2012

This paper quantifies the significant environmental effects of a three storey building in Northern India. The building has a floor area of 3960 m 2 and projected service life of 50 years. In this study, a comprehensive life cycle environmental assessment of the building was conducted to find out the energy consumption and greenhouse gas (GHG) emissions by the building. This study shows that RCC framework and steel in the building are the highest contributor in GHG emissions for all three floors. Also, it has been shown that second floor has the biggest share in contribution to the total impact. In addition to this, 59% of the total energy is consumed only in the operation phase. In most of the buildings, life cycle phases have significant impact in some category, however; only two life cycle phases viz. construction and operation seem to be more significant in all impact categories (energy and emissions). © 2012 Elsevier B.V.

Singh A.N.,Gujarat Forensic Sciences University | Sharma P.K.,THDC Institute of Hydropower Engineering and Technology | Agrawal Y.K.,Gujarat Forensic Sciences University
Applied Spectroscopy Reviews | Year: 2014

Photoacoustic spectrophotometer (PAS) has emerged as the most promising technology with its promise to resolve unmet issues in various domains. The advantages of PAS are nonvulnerability of the sample, trace quantity sample analysis, and short response time. Though it showed distinguished features close to its emergence, it is bereft of its importance in the present scenario. Certainly, there exists a transparent gap in understanding the current situation in forensic crime scene management and the application of PAS within the same discipline. This article aims to consolidate all this information to fill an existing knowledge gap and tries to establish trajectory of research done up to now. This article will also pinpoint the reasons behind why this advanced technique could not accomplish its respectable feat inside the market and restraint of optical business toward inventing and commercializing this merchandise. © 2014 Taylor & Francis Group, LLC.

Mishra N.,Indian Institute of Technology Roorkee | Mishra N.,Griffith University | Dabra N.,Punjabi University | Nautiyal A.,Indian Institute of Technology Roorkee | And 5 more authors.
Ferroelectrics, Letters Section | Year: 2015

The ferroelectric and switching properties of spray deposited sodium nitrite (NaNO2) - poly vinyl alcohol (PVA) composite films on porous silicon template have been analyzed. The image of field emission scanning electron microscope (FE-SEM) shows that the average pore size varies from 800 to 1250 nm with the anodization time of silicon. The remanent polarization of the composite films is dependent on the pore size of the silicon. The optimum value of remanent polarization (Pr) = 41 μC/cm2 is observed in NaNO2: PVA composite film for pore size 1250 nm. The switching kinetics of the composite films has been analyzed by different theoretical model. The switching current data are fitted well with infinite-grain model (IGM) in the lower time region and deviate in later time region. The nucleation limited switching (NLS) model gives excellent agreement with the experimental polarization reversal transients throughout the whole time range. Copyright © 2015 Taylor & Francis Group, LLC.

Singh A.N.,Indira Gandhi Center for Atomic Research | Thakre R.D.,Gujarat Forensic Sciences University | More J.C.,Gujarat Forensic Sciences University | Sharma P.K.,THDC Institute of Hydropower Engineering and Technology | Agrawal Y.K.,Gujarat Forensic Sciences University
Polymer - Plastics Technology and Engineering | Year: 2015

Block copolymer nanostructures are smart, intelligent, and environment sensitive nanostructures designed to respond in a controlled manner to an external stimulus. Block copolymer nanostructures are being extensively utilized in pharmaceutical field, nanotechnology, and inforensics. Upon micellization, the hydrophobic core of block copolymer nanostructures region serves as a reservoir for hydrophobic medication, which can be loaded by chemical, physical, or electrostatic means. DNA combined with synthetic block copolymer nanostructure enhances the chemical and biological behaviors of biomacromolecule and at the same time completely suppress undesirable properties. Novel Nanoelectromechanical Systems/Microelectromechanical Systems (NEMS/MEMS) devices are being realized using block copolymer nanostructures and DNA combined with inorganic material nanoparticles and small organic moieties. © 2015, Copyright © Taylor & Francis Group, LLC.

Tripathi R.,THDC Institute of Hydropower Engineering and Technology | Kumar A.,P.A. College
Advanced Materials Research | Year: 2013

Zinc selenide nanoparticle has been synthesized using soft chemical routes. The particles were capped using 2-mercaptoethanol to achieve the stability and avoid the coalescence. The asobtained particles were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), UV-VIS absorption and photoluminescence (PL) spectra. The impedance studies were carried out as a function of frequency (100 Hz-1 MHz) and temperature (298-373 K) by impedance spectroscopy. An analysis of the complex impedance (z' and z") with frequency is performed assuming a distribution of relaxation times. © (2013) Trans Tech Publications, Switzerland.

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