Abhilash, G.; Dr. Rani Joseph(Cochin University of Science and Technology, August 13, 2015)
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Abstract:
Natural rubber latex, an aqueous colloidal dispersion of polyisoprene is
widely used in production of gloves, catherers, rubber bands etc. The natural
rubber latex content present in products such as gloves causes allergic
problems. Of the different types of allergies reported, latex is known to produce
Type I and Type IV allergies. Type I is called immediate hypersensitivity and
type IV is called delayed hypersensitivity. It has been reported that some of the
proteins present in the latex are mainly responsible for the allergic reactions
type I. Significant reduction in the allergic response (type I) of natural rubber
latex can be achieved by the reduction in its protein content, however out of the
total proteins present in the latex or latex film only a fraction is extractable. The
major techniques employed to reduce protein content of latex include leaching,
autoclaving, chlorination, use of proteolytic enzymes and use of non ionic
surfactants. Sulphur vulcanization of dipped products is responsible for Type
IV allergy. N-nitrosamine, a carcinogenic substance is produced as a result of
sulphur vulcanization. Radiation vulcanization can be used as an alternative for
sulphur vulcanization.
The current research deals with techniques to reduce the allergy
associated with latex products. To reduce the type I allergy, low protein
latex is developed using polyethylene glycol, a non- ionic surfactant. The
present study employs radiation vulcanization to eliminate type IV allergy.
The effect of different cure systems and fillers on the properties of low
protein latex is also investigated as a part of the study.
Deepa, K G; Dr.Sudha Kartha,C(Cochin University of Science & Technology, August , 2008)
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Abstract:
In this work. Sub-micrometre thick CulnSe2 films were prepared using different
techniques viz, selenization through chemically deposited Selenium and Sequential
Elemental Evaporation. These methods
are simpler than co-evaporation technique, which is known to be the most suitable
one for CulnSe2 preparation. The films were optimized by varying the composition
over a wide range to find optimum properties for device fabrication. Typical absorber
layer thickness of today's solar cell ranges from 2-3m. Thinning of the absorber
layer is one of the challenges to reduce the processing time and material usage,
particularly of Indium. Here we made an attempt to fabricate solar cell with absorber
layer of thickness <lmum. Here In2S3 was used as the buffer layer, replacing toxic CdS.
Description:
Department of Physics,
Cochin University of Science and Technology
Kochu Baby, Manjooran S; Dr.Kuriakose, A P(Cochin University of Science and Technology, April 15, 1998)
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Abstract:
Petroleum, a mixture of organic compounds, comes from
underground rock formations ranging in age from ten to several
hundred million years. The process by which it is formed and
developed is not yet completely known. Studies indicate that petroleum
is formed mainly from microscopic-sized marine animals and plants.
When these organisms died in water of low oxygen content, they
did not decompose. Thus their remains sank to the bottom to
be buried under accumulations of sediment. Their conversion to petroleum remains a subject of research even today.
Description:
Department of Polymer Science and Rubber Technology,
Cochin University of Science and Technology
Navas, K A; Dr.Mathew, K J(Cochin University of Science and Technology, March , 1993)
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Abstract:
Coral Reefs are marine, biogenic, wave resistant carbonate structures,
formed of the skeletal remains of hermatypic, or reef building organisms.
The main reef builders are calcifying Rhodophytes, molluscs, sponges, polychaetes and Cnidarians. Among them, scleractinian corals and hydrocorallians are by far the most important contributors to the formation of reefs. Coral reefs cover approximately 600 thousand square kilometers of the earth's surface (Crossland fl a_1., 1991) which is about 2x106 square kilometres of tropical oceans.
Sebastian, Paul; Sebastian,V D(School of Legal Studies, July , 1996)
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Abstract:
This study analyses the role of the Press Council as
a champion and guard of free speech. It discusses the
extent to which the Council succeeded in achieving its
statutory objective of preserving the freedom of the
press and maintaining and improving the standards of
newspapers and news agencies. It also examines the
inherent and in-built weaknesses of the Council and
suggests ways and means for restructuring and enlarging
its functions.
Mathew, George; Dr.Karunakaran, V(Cochin University of Science And Technology, February , 1987)
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Abstract:
The present study is on the nature, problems and prospects of the handloom industry in Kerala. The problems of the industry are mostly in the nature of low earnings of the workers, underutilisation of the existing capacity and low profit in its various sectors. The majority of
the handloom co-operative societies are either dormant or facing liquidation. The income and employment of weavers are so pitiably low that they are living in utter poverty and starvation. Frequent price fluctuations of yarns, dyes and chemicals increase the cost of production and reduce the profitability. Consequently handloom fabrics are not able to compete with mill cloths and powerloom products. Accumulating the unsold stocks in the godowns of co-operative societies and with master weavers has become the practice of the day. Spinning mills in Kerala are producing only lower counts of yarns. S, handloom industry has to depend on textile mills in Tamil Nadu for higher counts of yarn. They create artificial scarcity and increase the prices exflorbitantly. Wage rates prevailing in Kerala are higher than those in Tamil Hadu. So rich master weavers are migrating to Tamil.Nadu and exporting the fabrics. under the label 'Kera1a Handlooms'. Governmental efforts to tackle the crisis by way of rebates and subsidies are found to be futile.
Description:
Department of applied economics, Cochin University of Science And Technology
Francis Jacob, K; Dr.Mohanan, P(Cochin University of Science and Technology, June , 2008)
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Abstract:
The thesis is the outcome of the exhaustive theoretical and experimental investigations performed on Printed Monopole Antennas loaded with different geometries .The work presented in this thesis describes the development of a 3D- FDTD(Finite Difference Time Domain) Modeller using MATLAB for the numerical computation of the radiation characteristics of the antenna. The predicted results are verified experimentally and also through simulation using Ansoft HFSS.The effect of top loading of the monopole with different geometries ,the dimensions of the loading patch and ground plane and the material parameters of the dielectric substrate upon the radiation performance of the antenna is studied in detail. Optimized Printed Monopole antennas suitable for Ultra Wide Band (UWB) applications have been developed.
Description:
Department of Electronics, Cochin University of
Science and Technology
Markose, K T; Dr.Wilson, P R; Dr.Sankaranarayanan, K C(Cochin University of Science and Technology, April , 2003)
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Abstract:
The study is confined to non-mechanised private and cooperative
granite quarries in Thrissur district. There are 90 non -mechanised
quarries in Thrissur district. Data were collected for the period from 1994-'95 to 1999-2000. 315* March of every year was considered as the closing date of the year. It envisages an analysis of various problems connected with quarrying operations, financial analysis, cost analysis, demand and supply position of quarry products and socio-economic background of workers. It also suggest some measures to improve the working conditions of granite quarrying.
Description:
School of Management Studies, Cochin University of Science & Technology
Jacob,M J; Dr.Krishnamoorthy,A(Cochin University Of Science And Technology, 1987)
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Abstract:
In this thesis we attempt to make a probabilistic
analysis of some physically realizable, though complex,
storage and queueing models. It is essentially a mathematical
study of the stochastic processes underlying
these models. Our aim is to have an improved understanding
of the behaviour of such models, that may widen their
applicability. Different inventory systems with randon1
lead times, vacation to the server, bulk demands, varying
ordering levels, etc. are considered. Also we study some
finite and infinite capacity queueing systems with bulk
service and vacation to the server and obtain the transient
solution in certain cases. Each chapter in the thesis is
provided with self introduction and some important references
Description:
Department of Mathematics and Statistics
Cochin University of Science and
Technology
Jos, C A; Dr.Pylee,M V(Cochin University of Science And Technology, 1978)
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Abstract:
This study is directed to examine how far price fluctuations in pepper can be controlled in the Indian context so as to have a reasonable and stable income for the primary producers which will ensure an adequate ‘encouragement for higher production and better export earnings. In a study of the methods of controlling violent price fluctuations a important question is that whether the present system of management of supply is satisfactory or not. It is more so when the demand
is likely to be sanimlatsd by the importers and wholesalers of the foreign countries. Though pepper is the most important of all the spices gross in India, little work has been done so far to study the problems and prospects of this commodity.
Description:
School of management studies, Cochin University of Science And Technology
Gopalakrishnan Nayar, K; Dr.Parameswaran, Nair N(Cochin University Of Science And Technology, January 3, 1987)
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Abstract:
The main objective of the study has been to
analyse the marketing problems of Indian cardamom at home
and abroad and examine possible courses of action which
would lead to increased consumption of cardamom, both
within India and abroad. This has been done in the context
of the anticipated increases in the Indian and world
supply of cardamom. Field studies were undertaken to understand
the cost of production of cardamom and cost of export.
This study was also directed at examining how
far price fluctuations in cardamom can be controlled in
the Indian context, so as to have a reasonable and stable
income for primary producers which will ensure adequate
encouragement for higher production and better export
earnings.
Description:
School of Management Studies, Cochin University
of Science and Technology
Merlin,Joseph; Meera Bai,M(Department of Applied Economics, Faculty of Social Sciences, 2002)
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Abstract:
The overall objective of the study is to examine the problems and prospects of the tea on industry in Kerala. The specific objectives are to trace the historical evolution of the tea plantation industry in India with special reference to Kerala and to study the performance of tea plantation industry in Kerala. In order to analyse the growth performance of tea plantation industry in Kerala in a comparative perspective, growth rates for the neighbouring states of Karnataka and Tamilnadu are estimated along with the National, South Indian and North Indian estimates. Tea plantation industry is a labour intensive activity. Productivity has been low primarily because of the over aging. In all the factories visited only Black tea is produced. In factories outmoded machines which installed years ago is still used which will increase the cost of production. The major problem is high cost of production and low price realization. The workers are found to be not satisfied with their working conditions- long journey to work place, absence of resting places, latrine facilities etc. and also the problems arising from dust in the factory. At a macro level the tea plantation industry has been facing the adverse impacts of globalisation and trade liberalization. There is only one solution to this problem that is to improve the competitiveness in production of raw leaf and manufacturing of tea. Government has a very important role with specification of strict quality control
Abesh, Reghuvaran; Dr. Anita Das, Ravindranath(Cochin University of Science And Technology, April , 2013)
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Abstract:
In this study, a novel improved technology could be developed to convert
the recalcitrant coir pith into environmental friendly organic manure. The standard
method of composting involves the substitution of urea with nitrogen fixing
bacteria viz. Azotobacter vinelandii and Azospirillum brasilense leading to the
development of an improved method of coir pith. The combined action of the
microorganisms could enhance the biodegradation of coir pith. In the present study,
Pleurotus sajor caju, an edible mushroom which has the ability to degrade coir
pith, and the addition of nitrogen fixing bacteria like Azotobacter vinelandii and
Azospirillum brasilense could accelerate the action of the fungi on coir pith. The
use of these microorganisms brings about definite changes in the NPK, Ammonia,
Organic Carbon and Lignin contents in coir pith. This study will encourage the use
of biodegraded coir pith as organic manure for agri/horti purpose to get better
yields and can serve as a better technology to solve the problem of accumulated
coir pith in coir based industries
Description:
School of Environmental Studies, Cochin University of Science & Technology