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SOLAR LOG GF VALUES FOR THE SPECTRAL LINES IN THE RANGE ${\lambda}{\lambda}$ 6209 - 6273 ${\AA}$
STALIN C. S.,SINHA K.,SANWAL B. B. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
We present here the solar LOG GF values obtained using the Liege solar at las and the standard solar photospheric models for the spectral lines in the wavelength range ${\lambda}{\lambda}$ 6209 - 6273 ${\AA}$. These log gf values shall be used to interpret a high resolution spectra of the star $\gamma$ Draconics.
Stalin Thambusamy,Anandha Raj Jeyaraman,Paruthimal Kalaignan Guruviah,Stalin Thambusamy 한국물리학회 2018 Current Applied Physics Vol.18 No.6
Blend polymer composite gel electrolytesare prepared using thepoly vinyledene fluoride (PVDF), polymethyl methacrylate (PMMA) with alumina (Al2O3) in variance of alkali metal iodide saltsystem. The alumina doped blend polymer electrolytes characterized by the XRD diffraction and FT-IR spectra. This is supportive to the conformation of the crystallinity behaviour and the composite formation.The high-resolution scanning electron microscopy (HR-SEM) have used to find the composite electrolyte membrane porous size (10 μm) and it has support to understand the morphological structure of the membrane. To analyze the ionic conductivity of the potassium iodide based composite polymer electrolyte by the impedance measurements, which is 4.62×10−3 Scm−1 at room temperature. Finally, different alkali metal iodide based dye-sensitized solar cells (DSSCs) fabricated and monitored an energy conversion efficiency.
SOLAR LOG GF VALUES IN THE INFRARED J AND H BANDS
STALIN C. S.,TRIVEDI CHETNA,SINHA K.,SAKWAL B. B. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
Solar IR spectra have been utilised by us to derive log gf values for atomic lines due to 17 chemical elements. in the J and H bands, i.e. in the wavelength ranges 1.00 - 1.34 ${\mu}m$ and 1.49 - 1.80 ${\mu}m$ respectively. The observed central line depths were based on the FTS atlases published at. Liege and KPNO. We also reprot new log gf values for 51 lines for which neither theoretical nor experimental values are available till date.
Joseph, Stalin,Kempaiah, Devaraju M.,Benzigar, Mercy,Baskar, Arun V.,Talapaneni, Siddulu N.,Jhung, Sung Hwa,Park, Dae-Hwan,Vinu, Ajayan The Royal Society of Chemistry 2017 Journal of Materials Chemistry A Vol.5 No.40
<P>In this work, we report a simple and versatile method for the preparation of mesoporous carbon nitrides (MCNs) functionalized with highly dispersed chromium oxide nanoparticles by using a metal organic framework, MIL-100(Cr), as a template and aminoguanidine hydrochloride (AG) as a high nitrogen content single molecular precursor. We are able to synthesise these metal oxide functionalized MCN materials with single step carbonization but without using any toxic template removal process using HF or NaOH. The absence of a washing procedure with toxic acid also allows the incorporation of a large amount of metal oxide particles inside the porous channels of MCNs. The obtained MCN materials exhibit a high specific surface area and a large pore volume. The AG to template ratios are varied to control the amine functional groups and the textural parameters including the specific surface area and pore volume. It is found that the AG to template ratio of 1.5 is the best condition to obtain MCNs with a specific surface area of 1294 m<SUP>2</SUP> g<SUP>−1</SUP>, which is the highest value reported so far for MCN-based materials. FT-IR and XPS results reveal that the prepared materials contain free NH2 groups within the CN network which help to anchor metal oxide nanoparticles and provide highly dispersed basic sites. These functionalized MCN materials are also used as adsorbents for CO2 capture. Among the materials studied, the MCN with the highest specific surface area shows the largest CO2 adsorption capacity (16.8 mmol g<SUP>−1</SUP>) which is much higher than those of MCN materials prepared from SBA-15 and KIT-6, activated carbon, MIL-100(Cr), SBA-15, and multiwalled carbon nanotubes. This high adsorption capacity is mainly due to the strong synergistic effect between the MCN with high specific surface area and highly dispersed metal oxide nanoparticles.</P>
H-V -SUPER MAGIC DECOMPOSITION OF COMPLETE BIPARTITE GRAPHS
KUMAR, SOLOMON STALIN,MARIMUTHU, GURUSAMY THEVAR Korean Mathematical Society 2015 대한수학회논문집 Vol.30 No.3
An H-magic labeling in a H-decomposable graph G is a bijection $f:V(G){\cup}E(G){\rightarrow}\{1,2,{\cdots},p+q\}$ such that for every copy H in the decomposition, $\sum{_{{\upsilon}{\in}V(H)}}\;f(v)+\sum{_{e{\in}E(H)}}\;f(e)$ is constant. f is said to be H-V -super magic if f(V(G))={1,2,...,p}. In this paper, we prove that complete bipartite graphs $K_{n,n}$ are H-V -super magic decomposable where $$H{\sim_=}K_{1,n}$$ with $n{\geq}1$.
Burnishing of Al (SiC)p metal matrix composites using TiAlN coated roller
E. Shankar,M. R. Stalin John,C. Devanathan,G. Ramya 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7
Roller burnishing involves plastic deformation by pressing a hard roller against the workpiece. The number of passes, rotational speed of the workpiece and type of lubricant were taken as input parameters. Its effect on surface roughness and surface hardness during burnishing of Al(SiC)p workpiece material was studied. Titanium aluminium nitride (TiAlN) coating was given to the WC rollers with PVD coating and its effects were studied. Roller burnishing of Al(SiC)p MMC can reduce the surface roughness up to 78.84 % and increase surface hardness up to143.4 %. Based on the extrapolated results it is noted that coated rollers under dry conditions produce low surface finish and high hardness.