Dr. Shah Mohd Ashraf after completing doctorial studies in Condensed Matter Physics, was appointed as Assistant Professor in National Institute of Technology Srinagar in year 1999. Here, Shah embarked upon new research programme, pioneered the synthesis of broad range of nanomaterials and established World Bank Funded Research Centre (Special Centre for Nanosciences) and laid the foundations to learn the new sciences-Nanotechnology in early twenties. In year 2009, shah moved to Middle East on deputation for a short period of two years and published book titled, "Principles of Nanoscience & Nanotechnology" with Dr. T. Ahmad, an eminent Chemist. Dr. Shah is teaching Nanotechnology, Materials Science and Materials Characterization from the last two decades and is actively engaged as reviewer /editor of many scientific journals. Shah has authored more than 75 international peer reviewed scientific papers in National and International journals and has written 5 Books on Nanotechnology and many Book Chapters with reputed international publishers. In his research, he has targeted bio-compatible and energy harvesting nano-materials, which has applications in day to day life. Shah has been awarded two major projects by the Govt of India under Nano-Mission and leadership qualities in taking lead role in innovative programmes have been acknowledged on many occasions. Shah has delivered invited talks in number of international forums. Dr. shah is also a member of many science academies and societies and his work has been cited by number of scientific reporters as well as scientific media. Organiser and Chair of several national and international symposia, schools and conferences which includes 3rd Int. Conference on "Nanotechnology for Better living" from 25-29 May 2016 in collaboration with IIT Kanpur. In his spare time, Dr. Shah is regularly organising INSPIRE internship programme launched by Hon’ble Prime Minister of India for the bright and genius students of the Kashmir Valley, which aims to attract talented students for the study of Science and Technology in early age which ultimately will bring peace across the globe.
The study of semiconductor nanocrystals (NCs) is a very active research field, due to the wide range of applications, related to light-emission and absorption, photodetection, solar cells, light emitting diode or tunable emitters for bio-labeling1. One area is the development of detection techniques with high spatial resolution enabled by the small size of nanomaterials. As a representative example, nanometer probes of temperature can be very useful to obtain an accurate local value of temperature, particularly in catalysis where the activity and selectivity are temperature dependent. The key is to obtain the value of the local temperature inside the solution or inside the solid at the surface of the reactants. Certain catalytic reactions require high temperatures to occur so another challenge is to build a high local temperature probe (> 373 K). In this context, semiconductor NCs are promising objects to provide this precision due to the temperature dependence of their optical properties. We present here the synthesis of different types of NCs (Cd3P22, InP@ZnS3 and CdSe@CdS4), their capacities as nanothermometers for high temperatures (>340 K) and the conditions which have to be fullfilled for accurate measurements. Different parameters such as the wavelength, the intensity, the area and the full width at half maximum of emission were studied as a function of temperature. The studied temperatures ranges from room temperature to 540 K and the comparison between the different NCs is discussed.
Self-protective/self-healing coatings are imperative for sustained corrosion protection and to minimise economic losses. The present research focuses on this premise. We report here the synthesis of a series of new effective organic corrosion inhibitors for corrosion protection of the aluminium alloy - AA2024-T3. The synthesized inhibitors were encapsulated in silica nano-containers and doped in GPTMS – Titanium isopropoxide based sol-gel coatings for “on-demand” release of the inhibitor. Anticorrosion behaviour of uncoated and coated coupons was characterized by Electrochemical impedance spectroscopy (EIS). The immersion time for evaluating the sustainability of the coatings in 3.5% NaCl was 168h as per MIL’s specifications. The localized corrosion and dissolution of the intermetallic particles (S & Ө phases) on the aluminium alloy was examined by using field emission scanning electron microscopy attached with energy dispersive X- ray spectroscopy, X-ray photoelectron spectroscopy and 3D profilometry. The acquired results revealed that, the synthesized inhibitors offered sustained corrosion protection to AA2024-T3. The coupons qualified salt spray test as per ASTM standard B117. The mechanism of action appeared to be formation organic thin layer of insoluble complex on the surface, thereby preventing the dislodgement of the inter-metallics and pitting corrosion characteristic of the AA2024-T3 alloy.
This work focuses on the synthesis and the modification of mesoporous silica SBA-15 using in-situ polymerization of polypyrrole. In order to study the effect of polypyrrole contents on the structural, textural and dye adsorption properties, several polypyrrole contents were dispersed and analyzed by various techniques such as X-ray diffraction (XRD), nitrogen sorption at 77 K, thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and scanning electronic microscopy (SEM). The obtained materials were tested for the removal of cationic and anionic dyes. The effect of pH, contact time, adsorbent dose, and initial dye concentration were investigated and discussed in terms of adsorption efficiency. The obtained results show that the adsorption efficiency of MO dye is preferably carried out by the nanocomposites PPY/SBA-15(50%) containing higher polypyrrole content. Whereas, the adsorption of MB is oriented by the parent material SBA-15 and the nanocomposite PPY/SBA-15(1%) containing lower content of polypyrrole. The experimental data were verified by the Langmuir and Freundlich isotherms, and the kinetic data were fitted by pseudo-first-order and pseudo-second-order models. The obtained results showed that the adsorption of the both dye by nanocomposite PPY/SBA-15 followed Langmuir adsorption isotherm models and pseudo-second-order kinetics. The adsorbed amounts recorded for MO and MB dyes are 41.66 mg/g and 58.82 mg/g, respectively.
ARISTOTELES Applications and Research Involving Space Technologies Observing the Earth's Field from a Low Earth Orbiting SatelliteARL Air Resources Laboratory, Silver Spring, Maryland ()ARL Australian Radiation Laboratory (Melbourne, Victoria) Atmospheric Radiation Measurement ( program)ARMA Autoregressive moving-averageARMSAT Atmospheric Radiation Measurement SatelliteARPA Advanced Research Project AgencyARRCC Analysis of Rapid and Recent Climate Change (project)ARS Agricultural Research Service ()ARSMC Regional Specialized Meteorological CentreART Arctica ()ARTEMIS Advanced Relay and Technology Mission Satellite ()ARTEP Ariane Technology Experiment Platform (European)ARW Advanced Research WorkshopAS Anti-Spoofing on TransmissionsAS Area of SavannaASA American Statistical AssociationASA Antarctic Support AssociationASA Atmosphere Spectroscopy ApplicationsASB Area of Savanna Burned annuallyASAP Automated Shipboard Aerological ProgrammeASAR Advanced Synthetic Aperture RadarASAS Advanced Solid State Array SensorASASP Active Scattering Aerosol Spectrometer ProbeASB Association of Southeastern BiologistsASCAT advanced scatterometerASCATT advanced scatterometerASCE American Society of Civil EngineersASCEND Agenda of Science for Environment and Development into the 21st CenturyASChE American Society of Chemical EngineersASCII American Standard Code for Information InterchangeASCOT Atmospheric Studies in Complex Terrain (program)ASCS Agricultural Stabilization and Conservation ServiceASDAR Aircraft-to-Satellite Data RelayASE Air Sea ExperimentASEAMS Association of Southeast Asian Marine Scientists Association of Southeast Asian NationsASF Alaska FacilityASF Atmospheric Stablization FrameworkASHOE Airborne Southern Hemisphere Ozone ExperimentASI Agenzia Spaziale Italiana (Italian Space Agency)ASK Assisted Search for KnowledgeASL above sea levelASL atmospheric surface layerASLO American Society of Limnology and OceanographyASM Applied Simulation and Modelling ()ASME American Society of Mechanical EngineersASOEN Senior Officials on the EnvironmentASOS Automated Surface Observing SystemASPP American Society of Plant PhysiologistsASPRS American Society for Photogrammetry and Remote SensingASR aerosol solar radiationASSAS Advanced Solid State Array SensorASTER Advanced Spaceborne Thermal Emission and Reflection (radiometer) Atmosphere-Surface Turbulent Exchange Research (formerly )ASTEX Atlantic Stratocumulus Transition ExperimentASTM American Society for Testing and Materials (Philadelphia, Pennsylvania)ASU Air Separation UnitATES Alcatel Espace Systems Atmospheric Turbulence and Diffusion Division (formerly ) () Atmospheric Turbulence and Diffusion Laboratory (now )ATF atmospheric transmission factorAtlantis Research vessel ()ATLAS Atmospheric Laboratory for Applications and ScienceATLAS Airborne Turnable Laser Absorption SpectrometerATLID atmospheric lidar atmosphereATM Atmospheric Transport ModelATMOS Atmospheric Trace Molecules Observed by SpectroscopyATOVS Advanced ATP adenosine triphosphateATPEX Tropical Pacific ExperimentATS Advanced Technology SatelliteATS Antarctic Treaty SystemATS applications technology satelliteATS Advanced Turbine SystemsATSR along-track scanning radiometerAURIO Auroral Imaging ObservatoryAV acoustic velocity (geophysical logging)AVCS Advanced Vidicon Camera SystemAVD acoustic variable density (geophysical logging) advanced very high resolution radiometer ()AVHRR GAC Global Area CoverageAVHRR LAC Local Area CoverageAVIRIS airborne visible and infrared imaging spectrometerAVISCO French group for Analysis, Validation, and Investigation of Satellite OceanographyAVNIR advanced visible and near-infrared radiometeravtur aviation gas turbine fuelAWDB Adirondack Watershed Data BaseAWIPS-90 Advanced Weather Interactive Processing System for the 90sAWRA American Water Resources AssociationAWIS Association for Women in ScienceAWWA American Water Works Association (Denver)AXCTD autonomous expendable profiler
(Cambridge, Massachusetts) atmospheric and environmental research ()AERI Atmospheric Emitted Radiance InstrumentAERI Atmospheric Emitted Radiance InterferometerAERI-FEP AERI Front End ProcessorAEROCE Atmosphere/Ocean Chemistry Experiment Atmospheric Environment Service (Canada)AEST Australian Eastern Standard TimeAET actual evapotranspirationAF Agri-residue used for animal feedAFBC Atmospheric Fluidized Bed CombustorAFDM ash free dry massAFEAS Alternative Fluorocarbons Environmental Acceptability StudyAFGL Air Force Geophysics LaboratoryAFGWC Air Force Global Weather Central ()AFR AfricaAFS American Fisheries SocietyAGA American Gas AssociationAGAGE Advanced Global Atmospheric Gases ExperimentAGAL Australian Government Analytical LaboratoriesAGASP Arctic Gas and Aerosol Sampling ProgrammeAGBD Above ground biomass densityAGCM Atmospheric General Circulation ModelAGID Association for Geoscientists for International DevelopmentAGL above ground levelAGU American Geophysical UnionAgr. Agriculture ()AGRHYMET Agronmeteorology and Operational Hydrology and Their ApplicationsAGU American Geophysical UnionAGWAT Agriculture and Water Project ()AGWP Absolute Global Warming PotentialAH Air HeaterAIAA American Institute of Aeronautics and AstronauticsAIBS American Institute of Biological SciencesAIChE American Institute of Chemical EngineersAICRIP All India Coordinated Programme for Rice Improvement Agency for International Development ()AIDJEX Arctic Ice Dynamics Joint ExperimentAIHA American Industrial Hygiene AssociationAIJ Activities Implemented JointlyAIM approximate inertial manifoldAIM Asian-Pacific Integrated ModelAIME American Institute of Mining and Metallurgical EngineersAIP Algorithm Intercomparison ProgrammeAIP-1 Algorithm Intercomparison Project-1AIP-2 Algorithm Intercomparison Project-2AIP-3 Algorithm Intercomparison Project-3AIREP Aircraft Weather ReportAIRS atmospheric infrared sounderAIRS-AMSU Atmospheric Infrared-Advanced Microwave Sounding UnitAIRS/MHS Advanced Infrared Radiometer Sounder (Atmospheric Infrared Sounder)/Microwave Humidity SounderAIS airborne imaging spectrometerAIT Asian Institute of TechnologyAITP Arctic Ice Thickness Project ()AJAX 1983 Oceanographic cruise along 0° Meridian into Weddell Sea (, )AL Aeronomy Laboratory (Boulder, Colorado) ()Al aluminumAl2O3 alumina (aluminum oxide)ALA American Library AssociationALACE Autonomous Lagrangian Circulation ExplorerALADIN Atmospheric Laser Doppler InstrumentALARA as low as reasonably achievableALBIOS Aluminum Biogeochemistry in Soils () Atmospheric Lifetime ExperimentALE/GAGE /Global Atmospheric Gases ExperimentALEXIS Array of Low-Energy X-Ray Imaging SensorsAlf Grimco A-700 processor used for data analysisALFA Local Forecast and Assimilation (Model)ALIAS Aircraft Laser Infrared Absorption SpectrometerALK alkalinityALOHA A Long-term Oligotrophic Habitat AssessmentALPEX Alpine ExperimentALS Adirondack Lake Survey () Adirondack Lake Survey CorporationALSS Aluminum in Streams Study ()ALT altimeterALT Alert, Northwest Territories, CanadaALTA Active Long Term ArchiveAMA African Mountains AssociationAMAD activity median aerodynamic diameterAMAP Arctic Monitoring and Assessment ProgrammeAMBIACE Amazon Biogeochemistry and Atmospheric Chemistry ExperimentAMD Developing AmericaAmeDAS Automated Meteorological Data Acquisition SystemAMEX Atlantic Meteorology ExperimentAM/FM Automated Mapping/Facilities Management (Society)AMI active microwave instrumentationAMIE Automated Methane Instrument EvaluationAMIGO America's Inter-hemispheric Geobiosphere OrganizationAMIP Atmospheric Model Intercomparison ProjectAMMS Advanced Multichannel Microwave SensorAMQUA American Quaternary AssociationAMRIR advanced medium resolution imaging radiometerAMS accelerator mass spectrometryAMS American Mathematical SocietyAMS American Meteorological SocietyAMS Applied Mathematical Sciences ()AMSR advanced microwave scanning radiometerAMSU advanced microwave sounding unitAMSU-A advanced microwave sounding unit-AAMTS advanced moisture and temperature sounderAMU atomic mass unitANARE Australian National Antarctic Research EstablishmentANBS Asian Network of Biological SciencesANC acid-neutralizing capacity Argonne National LaboratoryANFC Annual Natural Forest ClearedANL/ACRF 's Advanced Computing Research FacilityAnn annualANNEX I Countries committed to a quantified CO2 target (, , Central and Eastern European countries)ANNEX II countries and ANSI American National Standards InstituteANSTO Australian Nuclear Science and Technology Organization (Menai, New South Wales)ANT Antarctica ()ANTARES Antarctic research (France) ()ANTARFIX Antarctic fixed station (France) ( and )ANU Australian National University (Canberra, Australia)AO announcement of opportunityAO atmosphere-oceanAOD aerosol optical depthAODC acridine orange direct countAOGCM Atmosphere-Ocean General Circulation ModelAOIPS Atmospheric and Oceanographic Information Processing SystemAOL Airborne Oceanographic LidarAOML Atlantic Oceanographic and Meteorological Laboratory (Miami, Florida) ()AOSB Arctic Ocean Sciences BoardAOSIS Association of Small Island StatesAOVP Arctic Ocean Variability Project (ACSYS)AP Annual ProductionAPA Adirondack Park AgencyAPA alkaline phosphatase activityAPAFO Advanced Particles and Fields ObserverAPAR absorbed photosynthetically active radiationAPARE East Asian-North Pacific Regional Experiment ()APC Apparent consumptionAPCA Air Pollution Control Association (Pittsburgh)APDA Arctic Precipitation Data Archive ()APEC Asia Pacific Economic Cooperation OrganizationAPHA American Public Health AssociationAPI American Petroleum InstituteAPMP Acid Precipitation Mitigation Program ()APN Asia-Pacific Network (for Global Change Research) ()APSRS Aerial Photo Summary Records SystemAPT automatic picture transmissionAQA American Quaternary AssociationAr ArgonARA atmospheric radiation analysisARAC Atmospheric Release Advisory Capability (program)ARC Ames Research CenterARC Antarctic Research Center softwareARCS Atmospheric Radiation and Cloud StationARCSS Arctic System Science (program)ARDB Arctic Runoff Database ()ARGOS Argos Data Collection and Position Location System ( and ) Aeronautical Radio, Inc.