IOSR-JAP   Volume-9 ~ Issue-4 ~ July-August 2017

ABSTRACT: In 1986, High-Temperature Super conductivity was discovered. The superconducting materials display novel or enhanced properties compared to traditional materials & thus open up possibilities for new technological applications. One the property like the penetration depth of layer superconductors of some materials is studies theoretically the study can be implemented in the systems for various practical applications. e.g. in developing high quality thin films, wires, tapes, bulk materials etc..

[1]. George Rajna; Academia.edu, Superconductive Graphene
[2]. http://en.wikipedia.org/wiki/BCS theory
[3]. http://en.wikipedia.org/wiki/Superconductivity
[4]. http://en.wikipedia.org/wiki/high temperature superconductivity
[5]. http://en.wikipedia.org/wiki/Room-temperature superconductivity

ABSTRACT: Co2+ ions doped nano Nickel - Chromium ferrite (x= 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) synthesized by Co-Precipitation method with pH as 10. Prepared samples are sintered at 1173K. Influence of Cobalt ion on Structural and magnetic properties of CoxNi1-xFe1.5Cr0.5O4 nano ferrite were reported here. The structural parameters were estimated by X- ray Diffraction (XRD). Morphology and composition of the synthesized samples has been evaluated Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) respectively. The spinel formation have been investigated by Fourier Transform Infrared Spectroscopy (FTIR) and two prominent absorption bans  1 and 2 corresponding to the stretching vibration of tetrahedral and octahedral sites around 600 cm-1 and 400 cm-

Keywords - Co-Ni-Cr Ferrite, Co-Precipitation method, XRD, SEM, EDAX, FTIR, VSM

[1]. H.Basti, L.B.Tahar, L.S.Smiri, F.Herbst, M.J.Vaulay, F.Chaus, S.Ammar and S.Benderbous, J.Colloid interface Sci., 341 (2010)
248-254.
[2]. J.H.H.Wang, L.Ding, D.Li and Y.Han, Appl.Surf.Sci, 257 (2011) 7107-7112.
[3]. K.Raju, G.Venkataiah and D.H.Yoon, Ceram.Int., 40 (2014) 9337-9344.
[4]. S.Ramesh, B.Chandra Sekhar, P.S.V.S.Rao and B.P.Rao, Ceram.Int., 40 (2014) 8729-8735.
[5]. S.H.Xuan, L.Y Hao, W.Q.Jiang, L.Song, Y.Hu, Z.Y.Chen, L.F.Fei and T.W.Li, Cryst. Growth Des.,7 (2007) 430-434.

ABSTRACT: Pseudomonas is the Gram negative bacteria which causes many diseases to human beings and livestocks. Nanotechnology is the current emerging area in medical fields to cure many bacterial diseases. Cu(MnO2)2, MnO2 and Ag(MnO2) nanoparticles were synthesized by hydrothermal method. The structural and morphology of nanoparticles were confirmed by XRD and SEM. The effect of these Cu(MnO2)2 and Ag(MnO2) nano scale particles against the pesudomonous bacteria were studied using zone of inhibition method. Cu(MnO2)2, and Ag(MnO2) nanoparticles were............

Keywords:Pesudomonas, Cu(MnO2 )2, MnO2, and Ag(MnO2), XRD,SEM

[1]. Xiaodiliu,Chang zhang chen,Yiyangzhao and Binjia A Review synthesis o manganese oxide Nanomaterial and their application on lithium ion batteries. doi:/10.1155/2013/736375
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[3]. 3.Synthesis and characterization of versatile Mgo-Zro2 Mixed metal oxide nanoparticle and their application catal science technology2011,1,1653 doi:10.1039/c1cy00259g (cross Ref),(CAS).
[4]. Brain wu etal., pseudomonas skin infection (2015).
[5]. jacquelyn cafasso etal., symptoms causes risk factors diagnosis treatment (2016).

ABSTRACT: One of the dominant noise sources from rotating machinery equipment is from trailing edge section of an airfoil as found in wind turbine blades. A computational study of noise mechanism due to trailing edge of blade for a three bladed 2 megawatt wind turbine was performed using the semi empirical noise model. The model predicts the sound power levels from trailing edge bluntness source using boundary layer displacement thickness on pressure and suction side of airfoil. At low Mach number flows (0.1884) and moderate to high Reynolds number (4.73 x 105 – 3.35 x 106) in span wise............

Keywords: Airfoil, Boundary layer, Sound power level, Reynolds number, Mach number, Wind turbine

[1]. Thomas F Brooks, D Stuart Pope, Michael A Marcolini. Airfoil Self Noise and Prediction. NASA Reference publication, (1989).
[2] Thomas Geyer, Ennes Sarradj, Christoph Fritzsche. Porous Airfoils Noise Reduction and Boundary layer effects. 15th AIAA/ CEAS Aeroacoustics Conference. Miami, Florida. (2009).
[3] Vincent P Blandeau, Phillip F Joseph. On validity of Amiets model for propeller trailing edge noise. 6th AIAA/CEAS Aeroacoustics Conference.
[4] Wei Jun Zhu,. Modeling of noise from wind turbines, DTU Wind Energy Department. Lyngby, Denmark. (2005)
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ABSTRACT: Titanium Oxide (TiO2) nanocrystalline powders in the anatase phase with tetragonal structure with the point group 4/mmm and space group I41/amd–D4h19 have been synthesized using titanium tetra-isopropoxide as the starting precursor. TG/DTA analysis of the precursor material was carried out in order to fix the calcination temperature for the titanium tetra isopropoxide precursor solution. As-prepared samples were annealed at different temperatures of 400 and 600 °C and their physicochemical properties were examined by means of TG/DTA, XRD, RS, PL, SEM/EDS and DC electrical conductivity studies. X -ray diffraction shows that the as-synthesized samples dried at 100ºC in air were amorphous, whereas annealed samples were crystalline and tetragonal structure, belongs to the............

Keywords: nanocrystalline, sol-gel, luminescent band, conductivity and activation energy

[1] O. Masson, V. Rieux, R. Guinebretière and A. Dauger, (1996) "Size and shape characterization of TiO2 aerogel nanocrystals", Nanostruct. Mater. 7 725-731.
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[3] U. Diebold, (2003) "The surface science of titanium dioxide," Surf. Sci. Rep., 48 53-229.
[4] S. Sakka, (2006) "Current sol-gel activities in Japan," J. Sol-Gel Sci. Technol., 37 135 -140.
[5] J. N. Hart, D. Menzies, Y. B. Cheng, G. P. Simon and L. Spiccia, (2006) "Microwave processing of TiO2 blocking layers for dye-sensitized solar cells," J. Sol-Gel Sci. Technol., 40 45-54..

ABSTRACT: This study investigates the relationship between cosmic rays and cloud cover; in order to ascertain the interdependence of each on other. Global cloud cover data for high, middle and low clouds from 1983 – 2009 were obtained from the International Satellite Cloud Climatology Project (ISCCP)-D2 dataset. Pressure corrected hourly cosmic rays data from 1983 – 2009 was obtained from Thule Neutron Monitor Station (76.50 N, 68.5o W, 26.0 m with geomagnetic cut-off rigidity of 1.0 GV). Descriptive analysis was employed in analyzing the data. These analyses were employed using MATLAB. Results reveal that, low cloud covers have good correlation with cosmic rays from 1983 – 1995; however, this relationship weakened............

Keywords: Cosmic rays, cloud cover, correlation, climate, relationship, solar activity.

[1]. E. Palle and C.J. Butler, (2000). The influence of cosmic rays on terrestrial clouds and global warming. Astronomy and Geophysics, 42 (4): 18 – 22.
[2]. J.R. Pierce and P.J Adams (2009). Can cosmic rays affect cloud condensation nuclei by altering new particle formation rates?Geophysical Research Letters, 36, 1 – 6.
[3]. H. Svensmark and E. Friis-Christensen (1997). Variations of cosmic ray flux and global cloud coverage - a missing link in solar-climate relationships. Journal of Atmospheric and Solar-Terrestrial Physics, 59, 1225 – 1232.
[4]. G. Joe (2012). Heliospheric phenomena responsible for cosmic ray modulation at the Earth in the effects of solar variability on Earth's climate. A workshop report. National Academic Press,Washington, D. C.
[5]. F. Yu (2002). Altitude variations of cosmic ray induced production of aerosols: implications for global cloudiness and climate. Journal of Geophysical Research, 107 (A7): 1 – 8.

ABSTRACT: In this research the study of fiber laser depends on an analytical theory which is including a three-level laser system. Any increased in core radius and pump power means increased in output power for optimum core radius3.8m we get 25mW output power. Optimum length depends on pumping power. Any increase in fiber length causes increasing in output power.

[1]. M. Ming-Kang Lin, "Principles and applications of optical Communications", McGraw-Hill Com. Int., (1996).
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[3]. Peng Wan, Lih-Mei Yang and Jian Liu,"156 micro-J ultrafast Thulium-doped fiber laser," SPIE Photonics West (2013).
[4]. S Tessarin, M. Lynch, J.F. Donegan, and G. Mazé," Thulium doped ZBLAN fibre ring-cavity amplifier" Proc. of SPIE Vol. 5825, (2010).
[5]. G. P. Agrawal, "Applications of nonlinear fiber optics", Academic presses, (2001).

ABSTRACT: The Ni-P-X EL nano-composite coatings are obtained by the immersion of the substrate material (Mild Steel, MS AISI1040) into electroless bath solution having second phase alumina and zirconia particles respectively. Microstructure and constituent composition of as-plated and heat treated specimens were analyzed by SEM and EDAX techniques and for electrochemical testing, as-plated and heat treated cylindrical samples were employed. The SEM results indicated the supplement of Al2O3 and ZrO2 nano-particles separately into an EL Ni-P matrix and were confirmed through EDAX analysis. When the coated specimens were heated at 380°C for 1 hour in argon atmosphere, nano-particles turned out to be closely packed which suggest an improvement in hardness resistance of EL nano-composite coatings.

Keywords: Electroless coating, EDAX, hardness, SEM, XRD

[1]. K. Zielinska, A. Stankiewicz and I. Szczygiel, "Electroless deposition of Ni-P-nano-ZrO2composite coatings in the presence of various types of surfactants", Journal of Colloid and Interface Science, vol. 2012, pp. 362–367(.377).
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ABSTRACT: The powder exhibits a polycrystalline structure with cubic system. The topography for Co0.5Zn0.5Fe2O4 depicts that the particles have granular shape with crystalline nature with average of particle size11.58 nm. The electrical conductivity and dielectric properties of the Co0.5Zn0.5Fe2O4 has been investigated. The correlated barrier hopping (CBH) modulus been applied to the interpretation of the AC electrical conductivity. Both parts of complex dielectric modulus were investigated.

Keywords: Nanoparticles; AC conductivity; dielectric properties; Ferrites.

[1]. M.R. Bhandare., H.V. Jamadar., A.T. Pathan., B. K. Chougule., and A. M. Shaikh., Dielectric properties of Cu-substituted Ni0.5−xZn0.3Mg0.2Fe2O4 ferrites, Journal of Alloys and Compounds, 509, 2011, pp.L113–L118.
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[5]. Rani, G. Kumar, K. M. Batoo, and M. Singh, Electric and Dielectric Study of Zinc Substituted Cobalt Nanoferrites Prepared by Solution Combustion Method, Am. J. Nanomater., 1 (1), 2013, 9–12.

ABSTRACT: The present work consists of a theoretical study of control rod worth of TRIGA-Mark-II research reactor using the evaluated nuclear data library JEFF-3.1.2. The data files of the evaluated nuclear data library cannot be used directly as input to neutronic or other applied calculations. These data files are to be converted to preprocessed files and then to post processed into multi-group files, which are then directed into specially formatted working libraries. These libraries are compatible with the neutronic codes. This subject involves computer software using knowledge of ENDF-6 formats...............

Keywords: JEFF-3.1.2, NJOY'99.0, WIMSD-5B, CITATION, TRIGA Mark-II

[1] C. Hardy and G. Haven, Atomic rise and fall, Australian Dictionary of Biography, 9, 1999, 23-27.
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[3] R. Henry, I. Tiselj and L. Snoj, Analysis of JSI TRIGA MARK II reactor physical parameters calculated with TRIPOLI and MCNP, Applied Radiation and Isotopes, 97, 2015, 140–148.

[4] R.E. MacFarlane and D.W. Muir, NJOY99.0: Code system for producing pointwise and multigroup neutron and photon cross sections from ENDF/B, RSICC Code Package PSR-480. Los Alamos National Laboratory, Los Alamos, New Mexico, USA, 1999.
[5] T. Kulikowska, WIMSD-5B: A neutronic code for standard lattice physics analysis, Distributed by NEA Data Bank. Saclay, France, 1996..

ABSTRACT: heart disease is one of the cause's numbers of death in world. If the heart could not pump blood and distribute it's to all parts of the body, pain in the chest will be happened while heavy work or walk a rush. Myocardial perfusion imaging (MPI) techniques is an ideal approach to doing the assessments of myocardial perfusion. As non-invasive imaging modalities, it can examine the functions of the various segments of the heart muscle to reflect whether there is a malfunction on heart............

Keywords: Stress, Rest, Myocardial perfusion, Blood perfusion.

[1] Manuel D. Cerqueira, MD; Neil J. Weissman, MD; Vasken Dilsizian, MD; Alice K. Jacobs, MD;SanjivKaul, MD; Warren K. Laskey, MD; Dudley J. Pennell, MD; John A. Rumberger, MD; Thomas Ryan, MD; Mario S. Verani, MD,2002. Standardized Myocardial Segmentation and Nomenclature for Tomographic Imaging of the Heart. Circulation. 2002;105:539-542
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[5] Helen Soneson, Joey F.A. Ubachs, Martin Ugander, Ha°kanArheden, and Einar Heiberg,2009. An Improved Method for Automatic Segmentation of the Left Ventricle in Myocardial Perfusion SPECT, J Nucl Med 2009; 50:205–213