Gisha, Sivan; Dr.Radhakrishnan,C K(Cochin University of Science and Technology, March , 2007)
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Abstract:
Studies reveal the presence of enzymes and different proteins in the venom
of S.argus. The present study detected the presence of phosphodiesterase in S.
argus venom. S. argus venom has displayed the presence of micromolar
concentration of acetylcholine. Phospholipase activity in S. argus venom shows
values below the detection threshold indicating that the venom does not possess
this enzyme. The proteolylic activity of S. argus venom on casein and gelatin
were assayed due to the probable involvement of proteases in causing the
instability of biological activities of the fish venom. Caseinase and gelatinase
enzymes were detected in S. argus venom. Though exact relationships of these
enzymes and proteins in envenomation are not traced, the involvement of
enzymes in envenomation cannot be ruled out. Further studies are required to
find the mechanism of action of these enzymes and proteins present in S. argus venom. The present study opens new dimensions for isolation of the lethal
compound present in S. argus venom. The preliminary study carried out here
shows the presence of a lethal factor between 6.5 KDa - 68 KDa.
Studies conclude that fish venom possesses many bioactive substances,
especially peptides, proteases and enzymes that bind with high affinity to
physiological targets and can be trapped for therapeutic purposes in the near
future. Even though this study reveals the conundrums of S. argus venom, it
opens new vistas of research on the venom components and the application and
design of the venom as a drug.
Description:
Department of Marine Biology, Microbiology and Biochemistry, Cochin University
of Science and Technology
Sini, Joys Mathew; Dr.Rengarajan, K(Cochin University of Science and Technology, July , 1996)
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Abstract:
The present study is carried out to understand (i) the incidence and occurrence of species of Vibrio in different culture systems in and around Cochin, (ii) characteristics of vibrios isolates, their ecology including growth response to various hydrological parameters, sensitivity to about 40 antibiotics, and (iii) role of physico-chemical parameters in pathogenicity of vibrios, etc. and the results emerged from the investigations are important and encouraging for better understanding of the 'vibriosis' in the culture systems to develop remedial measures to control diseases. The Thesis begins with an “Introduction” followed by “A review of literature” on diseases of penaeid shrimps with particular reference to 'vibriosis' and “Material and methods” which details with the methods and procedures followed in the experiments and analyses of data. This Thesis consists of three chapters. Chapter Ideals with the incidence and ecology of Vibrio spp. in water, sediment and in juveniles of the Indian white prawn Penaeus indicus in the culture systems. In Chapter 2, characteristics of vibrio isolates including growth response to various
levels oftemperature, salinity and pl 1, sensitivity to 40 antibiotics and minimal inhibitory concentration tests are detailed.e out-breaks. The Chapter 3 discusses the role of physico-chemical parameters in the incidence, seasonal abundance of Vibrio spp. and in 'vibriosis'. A summary of the whole work and list of references are also included at the end. This study gives a detailed information regarding the incidence and ecology of vibrios in the culture systems. their characteristics and pathogenicity
Peethambaran, N R; Dr.Kuriakose, A P(Cochin University Of Science And Technology, March 30, 1990)
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Abstract:
In the present work, studies on vulcanization, rheology
and reinforcement of natural rubber latex with special reference
to accelerator combinations, surface active agents and gamma
irradiation have been undertaken. In vulcanization, the choice
of vulcanization system, the extent and mc-zie of vulcanization
and network structure of the vulcanizate are important factors
contributing to the overall quality of the product. The vulcanization
system may be conventional type using elemental sulfur
or a system involving sulfur donors. The latter type is used
mainly in the manufacture of heat resistant products. For improving
the technical properties of the products such as modulus
and tensile strength, different accelerator combinations are used.
It is known that accelerators have a strong effect on the physical
properties of rubber vulcanizates. A perusal of the literature indicates that fundamental studies on the above aspects of latex technology are very limited. Thereforea systematic study on vulcanization, rheology and reinforcement of natural rubber latex with reference to the effect of accelerator combinations, surface active agents and gamma irradiation has been undertaken. The preparation and evaluation of some products like
latex thread was also undertaken as a part of the study.
The thesis consists of six chapter
Description:
Department of Polymer Science
and Rubber Technology, Cochin University of Science and Technology
Zinc butyl xanthate [Zn(bxt)2] was prepared
in the laboratory . The effect of this xanthate with zinc
diethyl dithiocarbamate (ZDC) on the vulcanization of natural
rubber ( NR), polybutadiene rubber (BR), and NR/BR
blend has been studied at different temperatures. The
amounts of Zn (bxt)2 and ZDC in the compounds were optimized
by varying the amount of ZDC from 0 . 75 to 1.5 phr
and Zn (bxt)2 from 0 . 75 to 1 .5 phr. The cure characteristics
were also studied . HAF filled NR, BR, and NR / BR blend
compounds were cured at different temperatures from 60 to
150 C. The sheets were molded and properties such as tensile strength, tear strength, crosslink density and elongation
at break, compression set, abrasion resistance, etc. were
evaluated. The results show that the mechanical properties
of 80NR/20BR blends are closer to that of NR vulcanizates,
properties of 60NR/40BR blends are closer to BR vulcanizates,
while the 70NR/30BR blends show an intermediate
property.
James, K C; Dr.Bhasi, M(Cochin University of Science and Technology, 2007)
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Abstract:
This thesis deals with the use of simulation as a problem-solving tool to solve a
few logistic system related problems. More specifically it relates to studies on
transport terminals. Transport terminals are key elements in the supply chains of
industrial systems. One of the problems related to use of simulation is that of the
multiplicity of models needed to study different problems. There is a need for
development of methodologies related to conceptual modelling which will help
reduce the number of models needed. Three different logistic terminal systems
Viz. a railway yard, container terminal of apart and airport terminal were selected
as cases for this study. The standard methodology for simulation development
consisting of system study and data collection, conceptual model design, detailed
model design and development, model verification and validation,
experimentation, and analysis of results, reporting of finding were carried out.
We found that models could be classified into tightly pre-scheduled, moderately
pre-scheduled and unscheduled systems. Three types simulation models( called
TYPE 1, TYPE 2 and TYPE 3) of various terminal operations were developed in
the simulation package Extend. All models were of the type discrete-event
simulation. Simulation models were successfully used to help solve strategic,
tactical and operational problems related to three important logistic terminals as
set in our objectives. From the point of contribution to conceptual modelling we
have demonstrated that clubbing problems into operational, tactical and strategic
and matching them with tightly pre-scheduled, moderately pre-scheduled and
unscheduled systems is a good workable approach which reduces the number of
models needed to study different terminal related problems.
Description:
School of Engineering,Cochin University of Science and Technology
Suneela,S S; Dr.Viswanadham,D V; Dr.Ram Mohan,H S(Cochin University of Science And Technology, January , 1989)
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Abstract:
The deteriorating air quality especially in urban
environments is a cause of serious concern. In spite of being
an effective sink, the atmosphere also has its own
limitations in effectively dispersing the pollutants being
dumped into it continuously by various sources, mainly
industries. Many a time, it is not the higher emissions that
cause alarming level of pollutants but the unfavourable
atmospheric conditions under which the atmosphere is not able
to disperse them effectively, leading to accumulation of
pollutants near the ground. Hence, it is imperative to have
an estimate of the atmospheric potential for dispersal of
the substances emitted into it. This requires a knowledge of
mixing height, ventilation coefficient, wind and stability of
the region under study. Mere estimation of such pollution
potential is not adequate, unless the probable distribution
of concentration of pollutants is known. This can be
obtained by means of mathematical models. The pollution
potential coupled with the distribution of concentration
provides a good basis for initiating steps to mitigate air
pollution in any developing urban area. In this thesis, a
fast developing industrial city, namely, Trivandrum is chosen
for estimating the pollution potential and determining the
spatial distribution of sulphur dioxide concentration. Each
of the parameters required for pollution potential is
discussed in detail separately. The thesis is divided into
nine chapters.
Description:
School of Marine Sciences, Cochin University of Science and Technology
Mathew, K A; Dr.Wilson, P R(Cochin University of Science and Technology, November , 1993)
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Abstract:
To make an analytical description of the considerations
for the capital structure decision and to explain the
patterns of capital structure prevailing in the state,
private and central sector manufacturing concerns in Kerala.
To evaluate the capital structure highlighting the
effect of financial leverage in an EBIT-EPS tangle.
To find out the effect of capital structure on the
returns and liquidity and solvency of the firms.
Description:
School of Managanent Studies, Cochin
University of Science and Technology
Saleena, Mathew; Maya, Raman(Springer, March 14, 2012)
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Abstract:
The chemical composition and evaluation of Indian
squid (Loligo duvauceli) mantle, epidermal connective
tissue and tentacle is investigated in this current study. It is
observed that squid mantle contains 22.2% total protein;
63.5% of the total protein is myofibrillar protein. The unique
property of squid myofibrillar protein is its water solubility.
Squid mantle contains 12.0% total collagen. Epidermal connective
tissue has highest amounts of total collagen (17.8%).
SDS-PAGE of total collagen identified high molecular
weight α-, β- and γ- sub-chains. Amino acid profile analysis
indicates that mantle and tentacle contain essential
amino acids. Arginine forms a major portion of mantle
collagen (272.5 g/100 g N). Isoleucine, glutamic acid and
lysine are other amino acids that are found in significantly
high amounts in the mantle. Sulphur containing cystine is
deficit in mantle collagen. Papain digest of mantle and
epidermal connective tissue is rich in uronic acid, while
papain digest, collagenase digest and urea digest of epidermal
connective tissue has significant amounts of sialic acid
(25.2, 33.2 and 99.8 μmol /100 g, respectively). PAS staining
of papain digest, collagenase digest and urea digest also
identify the association of hexoses with low molecular
weight collagen fragments. Histochemical sectioning also
emphasized the localized distribution of collagen in epidermal
and dermal region and very sparse fibres traverse the
myotome bundles
Sallyamma,Job; James,Manalel(Department of Applied Economics, Faculty of Social Science, 2003)
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Abstract:
Chit funds contribute to the value of financial markets in India particularly in Kerala. Chit finances with its unique features are of great significance especially as a savings cum borrowing avenue. The present study entitled “A Study of chit Finance in Kerala with special emphasis on Kerala State Financial Enterprises Ltd.” examines the socio-economic aspects of Chit schemes run by the private Chit Funds, KSFE, co-operatives, and informal Chit Funds. The study is an attempt to find the reasons for the growing popularity of Chit Funds as savings cum borrowings avenues even in the presence of various other avenues of savings and borrowings and also to understand how the Chit subscribers utilize the funds. The objectives of the present study are to examine the trends and pattern of growth of Chit Funds in the formal sector in Kerala, performance of KSFE as the only public sector Chit Fund company in India, preference for joining Chit Funds, estimate the cost and return on Chit Funds etc. is an indigenous financial instrument is complementary to modern financial techniques of savings and borrowings. KSFE is the dominant foremen in the chit business in Kerala, its weaknesses result in the non-attainment of certain objectives. Driven by the growing trend of privatization, KSFE needs to be innovative and competitive. It is also necessary that KSFE continue its leadership role by being more effective in being the harbinger of more efficiency, professionalism and good governance in the Chit Fund Industry. The growth and development of chit business by protecting the interests of both the subscribers and the foremen will therefore be most beneficial for any growing economy.
Jose,V S; Sankaranarayanan,K C(Department of Applied Economics, 2002)
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Abstract:
The present study was undertaken to evaluate the performance of Coir Vyavasaya Co-operative societies (CVCs) in Kerala. It was also intended to examine the extent of fulfillment of the objectives of Co-operativisation Scheme and the socio-economic betterment of worker members, Further the study was directed to find out the level of participation of members in the affairs of CVCs and to identify the major problems confronting the CVCs and the future prospects of the industry. The objectives of this study are to evaluate the performance of CVCs in Kerala with reference to the objectives of co-operativisation, socio-economic background of the worker members of the CVCs in the state, extent of members participation, major problems etc. Major findings of the study shows that 84% of CVCs surveyed were incurring losses, the long-term solvency position of the CVCS shows very pathetic situation, ration analysis shows and unhealthy state of affaires with respect to short-term solvency position and operating efficiency of all categories of CVS were found to be extremely poor. If CVCs are enabled to increase their quantity of production and there by the volume of business, their amount of loss can be reduced. If this is so, the societies can provide more days of employment to their work members, which will help them to earn more wages and thereby improve their economic and social conditions
Habeeb, Rahiman P A; Dr.George, Varghese(Cochin University of Science and Technology, August 16, 2010)
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Abstract:
While the quantum of advances from the public sector banks (PSBs) to the MSEs has increased over the years in absolute terms, from Rs.46, 045 crore in March 2000 to Rs.1, 85,208 crore in March 2009, the share of the 7credit to the MSE sector in the Net Bank Credit (NBC) has declined from 12.5 per cent to 10.9 per cent. Similarly, there has been a decline in the share
of micro sector as a percentage of Net Bank Credit (NBC) from 7.8 per cent in March 2000 to 4.9% in March 2009. (TKA.Nair, 2010)9.The major reasons for low availability of bank finance to this sector are high risk perception of the banks in lending to MSEs and high transaction costs in processing of loan applications of MSEs. The problem is more serious for micro enterprises
requiring small loans and the first generation entrepreneursThe thesis studies the divergence in guidelines by, CGTMSE, RBI & Bank of Baroda on collateral free lending and analyses the awareness of MSE about CGTMSE lending. The researcher tries to assess the problems faced by borrowers in availing advance under CGTMSE from Bank of Baroda, Kerala.
Description:
School of
Management Studies, Cochin University of Science & Technology