Vineetha, C P; Dr Babu, C.A(Cochin University of Science and Technology, June 22, 2015)
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Abstract:
The renewable energy sources (RES) will play a vital role in the
future power needs in view of the increasing demand of electrical
energy and depletion of fossil fuel with its environmental impact. The
main constraints of renewable energy (RE) generation are high capital
investment, fluctuation in generation and requirement of vast land area.
Distributed RE generation on roof top of buildings will overcome these
issues to some extent.
Any system will be feasible only if it is economically viable and
reliable. Economic viability depends on the availability of RE and
requirement of energy in specific locations. This work is directed to
examine the economic viability of the system at desired location and
demand.
Bright Singh, I S; Kavitha, Ramachandran(December 3, 2003)
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Abstract:
The optimum growth requirements of two nitrifying consortia developed from treated sewage by enrichment technique
were determined by a series of experiments. There was total inhibition of nitrification at above 2.75 g r' NH/- Nand 2.5g r'
N02' - N and the ammonia oxidizing consortium preferred a pH at 8.5 and the nitrite oxidizing consortium a pH of 7.5 as the
optima for nitrification. Optimum temperatures were between 20° and 30°C for both the groups. As the rate of airnow was
increased from I to 7 Ilmin, the build-up of N02- -N increased 10-fold and the consumption of N02- -N increased by a factor
of 28.8 implying that the ammonia oxidizing consortium in a bioreactor required three times more aeration than that for
nitrite oxidizers for ex pressing their full nitrifying potential. These data directly contribute for developing a fermentati on
process for the mass production of nitrifiers as well as for designing bio reactors for nitrifying sewage.
Description:
Indian lournal of Experimental Biology
Vol. 42, March 2004, pp. 314-318
Ajitha, S; Dr.Sugunan, S(Cochin University of Science and Technology, September , 2008)
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Abstract:
Mesoporous materials are of great interest to the materials community because of their potential applications for catalysis,separation of large molecules,medical implants,semiconductors,magnetoelectric devices.The thesis entitled 'Ordered Mesoporous Silica as supports for immobilization of Biocatalyst' presents how the pore size can be tuned without the loss in ordered structure for the entrapment of an industially important biocatalyst-amylase.Immobilization of enzymes on ordered mesoporous material has triggered new ooportunities for stabilizing enzymes with improved intrinsic and operational stabilities.
Description:
Department of Applied Chemistry,
Cochin University of Science and Technology
Kannan, V; Dr. Sreekumar, K(Cochin University of Science & Technology, August , 2011)
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Abstract:
Catalysis is a technologically important field which determines the quality of life in future. Catalyst research in pharmaceutical industry,fine chemical synthesis and emission control demands supported catalysts in bulk quantities.In the present work it was observed that clay supported catalysts mentioned in various chapters could also be used for the synthesis of similar molecules. The K10Ti catalyst can be used for the synthesis similar substituted imidazole derivatives under solvent free conditions and synthetically important Mannich bases of substrates containing various substitutes.Al-pillared saponite can be used for acetalation of other polyhydroxy compounds like glycerol,mannitol etc.Cu-Pd KSF catalyst has found application in C-C bond forming reactions which can be applied to other reactions and similar methods can be adopted for the synthesis of other catalyst by changing the transition metals. Montmorillonite K10 catalysed synthesis of triarylpyridines can be extended to the synthesis tetrasubstuted pyroles.K10Ti can also be utilized for the synthesis of similar heterocycles.
Description:
Dept.of Applied Chemistry,Cochin University of Science and Technology
Jacob,T V; Dr.Ramachandra, Poduval P(Cochin University of Science and Technology, March 30, 1990)
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Abstract:
The term 'organisation' is used in different contexts. In this study,
organisation is considered as a 'socio—technical system. Alienation, as a term and as a theme, are found in many writings from very early times. But the concept and emphasis differ. The writers who have explained alienation includes theologians, philosophers, anthropologists, economists, political scientists, historians, psychologists and sociologists
Description:
School of Management Studies, Cochin University of
Science and Technology
Jagathy Raj, V P; Sreejith, A(Indian Institute of Management Kozhikode, April 10, 2007)
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Abstract:
IT and related services played a major role for India’s current 9.2. GDP growth. Organized
retailing in India is one more example for its open economy. The IT industries where able
develop a demand for Indian talents all over the world and improved their living standards. It
directly impacts only a small minority of Indian population while organized retail affects every
single Indian and every sector of Indian society. The paper gives a glimpse of the slow evolution
of retail market over the years in India and its contribution for economic growth. The likely
positive impact of this revolution in different sectors is enumerated. Paper addresses its ability to
manipulate consumption pattern of society, increased customer satisfaction and likely change in
the market shares of the different types of sellers. Paper discusses its flip sides like increasing
social tension among families below poverty line and greater loss of self employment
opportunities by this revolution. The main theme of enquiry of this paper is what it all means for
the Indian society.
Description:
International Marketing Conference on Marketing & Society, 8-10 April, 2007, IIMK
Knoevenagel condensation between carbonyl compounds and active methylene compounds as well as three component Mannich reaction between aldehydes, ketones and amines proceeded smoothly in water with good to excellent yield and high selectivity in the presence of zero and first generation poly(amidoamine) (PAMAM) dendrimers. The products and the catalyst were separated by simple biphasic extraction. The catalyst was found to be reusable.
Abdul Rasheed, T M; Nampoori, V P N; Sathianandan, K(Chemical Physics, 1986)
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Abstract:
The vibrational overtone spectra 0f the liquid phase 1,2-dichloroethane and 1,2-dibromoethane in the spectral regions of
CH stretching local mode overtones corresponding to delta v CH= = 2 to delta v CH=5 are reported. The observed spectral features are
assigned using the local mode model. LocaI mode frequencies WCH and diagonal local mode anharmonicities XCH are
obtained from an analysis of the spectra. The local-local combinations observed are interpreted on the basis of a coupled CH
oscillator model hamiltonian. Local-normal combinations show complex structures and their possible assignments are given.
Abdul Rasheed, T M; Moosad, K P B; Nampoori, V P N; Sathianandan, K(Springer, September , 1989)
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Abstract:
Vibrational overtone spectra of styrene (liquid) and polystyrene (solid), studied by the laser-induced thermal lens (for ΔV=6) and the conventional near infrared absorption (for ΔV=3–5) techniques, are reported. For polystyrene, the overtone energy-bond length correlation predicts that the aryl CH bonds are ∼0.0005 Å longer than that in benzene, while no such conclusions could be drawn on styrene. Thesp 3 CH overtones in polystyrene are observed on the low energy side of the aryl CH overtones.
Mohammed Yusuff, K K; Robinson, P P; Arun, Vasudevan; Manju, Sebastian; Ummer Aniz, Chennampilly(Springer, June 5, 2009)
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Abstract:
The metal complex, [Ni(en)2(H2O)2](NO3)2
(en = ethylenediamine), was decomposed in a static furnace
at 200 C by autogenous decomposition to obtain
phase pure metallic nickel nanocrystallites. The nickel
metal thus obtained was studied by XRD, IR spectra, SEM
and CHN analysis. The nickel crystallites are in the
nanometer range as indicated by XRD studies. The IR
spectral studies and CHN analyses show that the surface is
covered with a nitrogen containing species. Thermogravimetric
mass gain shows that the product purity is high
(93%). The formed nickel is stable and resistant to oxidation
up to 350 C probably due to the coverage of nitrogen
containing species. Activation energy for the oxidation of
the prepared nickel nanocrystallites was determined by
non-isothermal methods and was found to depend on the
conversion ratio. The oxidation kinetics of the nickel
crystallites obeyed a Johnson–Mehl–Avrami mechanism
probably due to the special morphology and crystallite
strain present on the metal.
Sugunan, S; Renuka, N K(Indian Journal of Chemistry, June , 2002)
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Abstract:
A series of supported vanadia systems have been prepared by
excess solvent technique using La203 and DY203 as supports.
Physical characterization has been carried out using XRD, FTIR,
TG studies, BET surface area measurement, pore volume analysis
etc. Cyclohexanol decomposition has been used as a test reaction
for evaluating the acid base properties of the supported system.
The oxidative dehydrogenation of ethylbenzene has been
employed as a chemical probe reaction to examine the catalytic
activity. The active species correspond to amorphous and
crystalline tetrahedral vanadyl units in the supported system.
We define a new graph operator called the P3 intersection graph,
P3(G)- the intersection graph of all induced 3-paths in G. A characterization
of graphs G for which P-3 (G) is bipartite is given . Forbidden
subgraph characterization for P3 (G) having properties of being
chordal , H-free, complete are also obtained . For integers a and b
with a > 1 and b > a - 1, it is shown that there exists a graph G
such that X(G) = a, X(P3( G)) = b, where X is the chromatic number
of G. For the domination number -y(G), we construct graphs G such
that -y(G) = a and -y (P3(G)) = b for any two positive numbers a > 1
and b. Similar construction for the independence number and radius,
diameter relations are also discussed.
Srinivasa, Gopal T K; Dr. Hridayanathan, C(Cochin University of Science and Technology, April 28, 1993)
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Abstract:
Packaging is important not only in extending the shellife of fish and fishery products but also improving their marketability. In the recent years, significant development have taken place in the packaging industry. During the past decade in India, there is almost a packaging revolution with the availability of variety packaging materials, thus generating better packaging consciousness in other producer/manufacturing industries. But unfortunately, such realisation is not forthcoming in the fisheries sector and packaging techniques for local and export trade continues to be on traditional lines with their inherent drawbacks and limitations. Better packaging ensures improved quality and presentation of the products and ensures higher returns to the producer. Among several packaging materials used in fishery industry, ISI specifications had been formulated only for corrugated fibre board boxes for export of seafoods and froglegs. This standard was formulated before containersiation came into existance in the export of marine products. Before containerisation, the standards were stringent in view of the rough handling, transportation and storage. Two of the common defects reported in the master cartons exported from India are low mechanical strength and tendency to get wet. They are weakened by the deposits of moisture caused by temperature fluctuations during loading, unloading and other handling stages. It is necessary to rectify the above defects in packaging aquatic products and hence in the present study extensive investigations are carried out to find out the reasons for the damage of master cartons, to evolve code of practice for the packaging oi frozen shrimp for exports, development of alternative style of packaging for the shipping container, development of suitable consumer packaging materials for fish soup powder, cured dried mackeral, fish pickles in oil and frozen shrimp. For the development of suitable packaging materials, it is absolutely essential to know the properties of packaging materials, effect of different packaging materials on theirshelf life and their suitability for food contact applications.
Description:
Department
of Industrial Fisheries, Cochin University of Science and
Technology