Embedded systems, especially Wireless Sensor Nodes
are highly prone to Type Safety and Memory Safety issues.
Contiki, a prominent Operating System in the domain is even
more affected by the problem since it makes extensive use of
Type casts and Pointers. The work is an attempt to nullify the
possibility of Safety violations in Contiki. We use a powerful,
still efficient tool called Deputy to achieve this. We also try to
automate the process
Description:
2009 International Conference on Advances in Recent Technologies in Communication and Computing
Embedded systems, especially Wireless Sensor Nodes
are highly prone to Type Safety and Memory Safety issues.
Contiki, a prominent Operating System in the domain is even
more affected by the problem since it makes extensive use of
Type casts and Pointers. The work is an attempt to nullify the
possibility of Safety violations in Contiki. We use a powerful,
still efficient tool called Deputy to achieve this. We also try to
automate the process
Description:
2009 International Conference on Advances in Recent Technologies in Communication and Computing
Hatha, A A M; Thirupathi, Suresh; Doriaraj, Sreenivasan; Sangeetha, Sreenivasan; Lakshmanaperumalsamy, P(Microbes And Enviornments, October 13, 2004)
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Abstract:
The source of samonella cross contamination in 15 retail chicken outlets in aresidual area in coimbatore city ,sourthern India was studied. Chopping boards and the butchers hands were predominant followed by knives and the weighing balance tray. Serotyping of the salmonella strains revealed that all strains were salmonella enteritis, except one which was found to be salmonella cerro.The anti bacterial activity of commonly used spices were evaluated.
Sugunan, S; Benny, Thomas(Indian Journal of Chemistry, February , 1995)
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Abstract:
The Setschenow parameter and thermodynamic
parameters of transfer of 2- and 4- hydroxybenzoic acids
from water to salt solutions have been reported. The data
have been rationalised by considering the structure
breaking effects of the ions of the salts, the localized
hydrolysis model, the internal pressure theory and the
theory of water structure due to Symons.
The Setschenow parameter and thermodynamic parameters of transfer of 2-, 3-, and 4-methylbenzoic acids
from water to salt solutions have been reported. The data have been rationalized by considering the structure breaking
effects of the ions of the salts, the localized hydrolysis model, and the internal pressure theory.
Sugunan, S; Benny, Thomas(Journal of Solution Chemistry, 1994)
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Abstract:
The Setschenow parameter and thermodynamic parameters of transfer of
2-, 3- and 4-fluorobenzoic acid from water to salt solution are reported.
The data have been rationalized by considering the structure breaking effects of the ions of the salts, the localized hydrolysis model and the internal
pressure theory.
Kriashnan Nair, P R; Nandakumaran, V M; Ambika, G(Pramana, December , 1994)
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Abstract:
We establish numerically the validity of Huberman-Rudnick scaling relation for
Lyapunov exponents during the period doubling route to chaos in one dimensional maps. We
extend our studies to the context of a combination map. where the scaling index is found to
be different.
Sunil,K Narayanankutty(Gordon and Breach Science Publishers, December 10, 1991)
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Abstract:
Tear and wear properties of short kevlar fiber, thermoplastic polcurethane (TPU) composite with
respect to fiber loading-and fiber onentation has been studied and the fracture surfaces were examined
under scanning electron microscope (SEM). Tear strength first decreased up to 20 phr fiber loading
and then gradually increased with increasing fiber loading. Anisotropy in tear strength was evident
beyond a fiber loading of 20 phr. Tear fracture surface of unfilled TPU showed sinusoidal folding
characteristics of high strength matrix. At low fiber loading the tear failure was mainly due to fibermatrix failure whereas at higher fiber loading the failure occurred by fiber breakage. Abrasion loss
shows a continuous rise with increasing fiber loading, the loss in the transverse orientation of fibers
being higher than that in the longitudinal orientation. The abraded surface showed lone cracks and
ridges parallel to the direction of abrasion indicating an abrasive wear mechanism. In the presence of
fber the abrasion loss was mainly due to fiber low.
Chandran,A R; Gopikrishna, M; Aanandan,C K; Mohanan, P; Vasudevan, K(Progress In Electromagnetics Research, 2007)
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Abstract:
The scattering behaviour of fractal based metallodielectric structures loaded over metallic targets of different shapes such as flat plate, cylinder and dihedral corner reflector are investigated for both TE and TM polarizations of the incident wave. Out of the various fractal structures studied,square Sierpinski carpet structure is found to give backscattering reduction for an appreciable range of frequencies. The frequency of minimum backscattering depends on the geometry of the structure as well as on the thickness of the substrate. This structure when loaded over a dihedral corner reflector is showing an enhancement in RCS for corner angles other than 90◦.
A comprehensive overview of reclamation of cured rubber with special emphasis on latex reclamation is depicted in this
paper. The latex industry has expanded over the years to meet the world demands for gloves, condoms, latex thread, etc.
Due to the strict specifications for the products and the unstable nature of the latex as high as 15% of the final latex
products are rejected. As waste latex rubber (WLR) represents a source of high-quality rubber hydrocarbon, it is a
potential candidate for generating reclaimed rubber of superior quality. The role of the different components in the
reclamation recipe is explained and the reaction mechanism and chemistry during reclamation are discussed in detail.
Different types of reclaiming processes are described with special reference to processes, which selectively cleave the cross
links in the vulcanized rubber. The state-of-the-art techniques of reclamation with special attention on latex treatment are
reviewed. An overview of the latest development concerning the fundamental studies in the field of rubber recycling by
means of low-molecular weight compounds is described. A mathematical model description of main-chain and crosslink
scission during devulcanization of a rubber vulcanizate is also given.
Bindu, Krishnan; Nampoori, V P N(Indian Academy of Sciences, June , 2005)
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Abstract:
Nanosized ZnO was prepared by polyol synthesis. Fluorescence spectrum of the ZnO colloid at varying pump intensities was studied. The powder was extracted and characterized by XRD and BET. The extracted powder was screen printed on glass substrates using ethyl cellulose as binder and turpinol as solvent. Coherent back scattering studies were performed on the screen printed sample which showed evidence of weak localization. The screen printed pattern showed strong UV emission.
The mangroves of Kerala are fast disappearing due to developmental activities.There are very few
studies conducted in the chemical aspects of these ecosystems.The main objective of this study is to
assess the spatial and seasonal variation of hydrographical as well as nutrients in mangrove
ecosystems along Kerala coast. Five sampling sites least intervened by industries were selected for
the study. Sampling was done for a period of six months in monthly intervals. A monsoonal hike of
dissolved nutrients was observed in all ecosystems except in the constructed mangrove wetland. The
constructed wetland exhibited a different hydrography and nutrient level in all seasons. The mangrove
forest in this area consists of the species Bruguiera gymnorrhiza which has been planted since forty
years.
Description:
Journal of Wetlands Ecology, (2009) Vol. 3, pp 32-42
Sugunan, S; Anantaraman, R(Indian Journal of Chemistry, December , 1982)
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Abstract:
Kinetics of mercuric chloride catalysed solvolysis of l-butyl
chloride, benzyl chloride. p-methylbenzyl chloride, l-phenylethyl
chloride and triethylcarbinyl chloride have been studied in aq.
DMSO, aq. acetonitrile and aq. ethanol. The kinetic data fit a second
order rate equation in aq. DMSO. The calculated values of the
second order rate coefficients increase in the case of aq. acetonitrile
and aq. ethanol. The order in catalyst in 95%(v/v) aq. DMSO is less
than unity.
Jagathy Raj, V P; Suresh Kumar, B(IJWCNT, August , 2012)
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Abstract:
Now a days, email has become the most widely
communication way in daily life. The main reason for using
email is probably because of the convenience and speed in
which it can be transmitted irrespective of geographical
distances. To improve security and efficiency of email system,
most of the email system adopt PKI and IBE encryption
schemes. However, both PKI and IBE encryption schemes
have their own shortcomings and consequently bring security
issues to email systems. This paper proposes a new secure
email system based on IBE which combines finger print
authentication and proxy service for encryption and
decryption
Description:
International Journal of Wireless Communications and Networking Technologies,Volume 1, No.1, August- September 2012
Marine yeasts (33 strains) were isolated from the
coastal and offshore waters off Cochin. The isolates
were identified and then characterized for the utilization
of starch, gelatin, lipid, cellulose, urea, pectin,
lignin, chitin and prawn-shell waste. Most of the
isolates were Candida species. Based on the
biochemical characterization, four potential strains
were selected and their optimum pH and NaCI
concentration for growth were determined. These
strains were then inoculated into prawn-shell waste
and SCP (single cell protein) generation was noted in
terms of the increase in protein content of the final
product.
Nishamol, K; Rahna, K S; Sugunan, S(Elsevier, 2004)
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Abstract:
Various compositions of chromium manganese ferrospinels were tested as catalysts for the vapour phase alkylation of aniline with methanol. The samples were prepared by room temperature co-precipitation technique and characterized by various physico-chemical methods. The acidity–basicity determination revealed that the samples possess greater amount of basic sites than acidic sites. All the ferrite samples proved to be selective and active for N-monoalkylation of aniline leading to N-methyl aniline; Cr0.6Mn0.4Fe2O4, Cr0.8Mn0.2Fe2O4 and CrFe2O4 exhibited cent percent selectivity for N-methyl aniline. Neither C-alkylated products nor any other side products were detected for all catalyst samples. The catalytic activity of the samples studied in this reaction is related to their acid–base properties and also on the cation distribution. Under the optimized reaction conditions all the systems showed constant activity for a long duration.