Sujatha, C H; Deepulal, P M; Gireesh kumar, T R; Rejomon, George(Springer, November 15, 2011)
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Abstract:
The distribution and accumulation of trace
metals in the sediments of the Cochin estuary during
the pre-monsoon, monsoon and post-monsoon periods
were investigated. Sediment samples from 14 locations
were collected and analysed for the metal contents (Mg,
Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb), organic carbon,
total nitrogen, total sulphur and grain size. The data
were processed using statistical tools like correlation,
factor and cluster analysis. The study revealed an
enrichment of Cd and Zn in the study area particularly
at station 2, which is confirmed by enrichment factor,
contamination factor and geoaccumulation index. The
factor analysis revealed that the source of Cd and Zn
may be same. The study indicated that the spatial
variation for the metals like Mg, Cr, Fe, Co, Ni, Cu, Zn,
Cd and Pb were predominant unlike Mn which shows a
temporal variation. The strong association of trace
metals with Fe and Mn hydroxides and oxides are
prominent along the Cochin estuary. The anthropogenic
inputs of industrial effluents mainly control the trace
metals enrichment in the Cochin estuary
Chandrasegaran, K; Dr.Sebastian, V D(Cochin University of Science and Technology, December 12, 1996)
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Abstract:
This thesis entitled “Child labour in india”Children are "supremely important assets" of the nation, India proudly asserts in the National Policy for Children (1974) gracefully acknowledging that they are future citizens on whose shoulders the destiny of our nation rests.Childhood is a time of discovery as the world and all it contains are new to children. It is a time of excitement and anticipation. lt is a time of dreams and fantasies. And it is a time of receiving love and appreciation. Paradoxically, a picture of contrast is a common experience in India as a vast majority of children who are starved of basic needs of nutrition, health and education are made to work at an early age in exploitative conditions. The specter of child labour is a glaring anomaly in a country graciously adorning human right. In an exposition of the problem involving human rights abuse, Chapters from Two to Five of this study have shot into focus the human rights jurisprudence with special reference to the rights of children. Children have a particular identity as children and they also have a universal identity as human beings.The concern for mankind expressed unequivocally and transcending the globe will be real and moving and not mere rhetoric and ritual if and only when it begins with children, as, to quote the words of Nehru, the human being counts much more as a child than as a grown up.The first three of these rights namely right to health, right to nutritive food and right to education are dealt with in Chapter Four. Finally, the positive effects of education have been sketched in that chapter to impress upon its significance in the development of human capitals.legitimization. The theme of legitimacy was rationalised on the ground of poverty as a strategy for achieving eradication of child labour ultimately by enforcing minimum wages, shorter working hours, leave compensation, non-formal education etc., as the employer would soon discover that child labour is not cheap and would be obliged to substitute adult labour. However, humanising the work life is only a promise to the detriment of children as the Act of 1986 enacted as a part of the new strategy is nearingcompletion of a decade of existence but nowhere near the fulfilment of the mission.As similar urge is more necessary and overdue, it has been suggested that a special body be established with all powers for cognisance of human rights abuse of children.It is proposed to conclude this study with a brief summary of the inferences drawn from the foregoing chapters along with a few suggestions emerging out of those inferences
Description:
School of Legal Studies, Cochin University of
Science and Technology
Mridula, S; Mohanan, P; Nijas, C M; Dinesh, R; Abdul, Rasheed; Vasudevan, K(IEEE, August 30, 2012)
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Abstract:
A novel compact RFID tag employing open stubs in a
microstrip transmission line is proposed. The prototype of the tag is
fabricated on a substrate of dielectric constant 4.4 and loss tangent 0.0018.
The tag consists of microstrip open stub resonators and cross polarized
transmitting and receiving disc monopole antennas. A prototype of 8 bit
data encoded tag is demonstrated in this communication. Method for
enhancing the performance of the RFID tag is also proposed. Magnitude
or group delay response can be used to decode the tag informations
Description:
Antennas and Propagation, IEEE Transactions on,VOL 60,issue 9,pp 4428-4432
Suresh, P V; Dr.Chandrasekaran,M(Cochin University of Science and Technology, October 10, 1996)
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Abstract:
In this thesis an attempt is made to explore the potential of marine fungi for the production of chitinolytic enzymes and to recognize the ability to hydrolyse native chitin through submerged as well as solid substrate fermentation culture conditions, using wheat bran and shellfish processing waste such as ‘prawn waste’ as solid substrates. Attempt was made to isolate a potential chitinase producing fungus from marine environment and to develop an ideal bioprocess for the
production ofchitolytic enzymes.Present study indicate scope for utilization of B. bassiana
for industrial production of chitinase using prawn waste as solid substrate employing solid substrate fermentation.
Description:
Department of Biotechnology. Cochin University of Science and Technology
Bright Singh, I S; Rosamma, Philip; Anas, A(Blackwell Publishing, June 1, 2008)
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Abstract:
Chitosan has beenwidely accepted as awall material
for preparing microcapsules of various purposes in
human medicine. The possibility of using chitosan
as a wall material for microencapsulating nutrients
and drugs for aquaculture purposes, speci¢cally to
Macrobrachium rosenbergii larvae was evaluated in
this study. Two types of chitosan-coated microcapsules
were prepared using either acetone (MEC-A) or
NaOH (MEC-N) as the cross-linking agents. They
were compared with a microbound diet relative to
total leaching of nutrients and free amino acids
(FAA). Among the microcapsules, MEC-N showed
the lowest level of total leaching of nutrients (23.3%)
during 5 h of immersion in seawater and released
65% FAA after 60min. During laboratory trials,75%
larvae had accepted the MEC-N capsule. The results
of the study suggest that chitosan can be used as a
wall material for preparing microcapsules to deliver
drugs and nutrients to M. rosenbergii larvae.
Rasheed, T M A; Nampoori, V P N(Springer, March , 1994)
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Abstract:
The CH local mode overtone spectrum of benzyl chloride in the visible and NIR regions studied by laser induced thermal lens and conventional NIR absorption is presented. The analysis shows that the −CH2Cl group is symmetrically oriented with respect to the benzene ring, thus finalizing one of the two possible conformational models predicted by electron diffraction studies. The aryl CH bonds have a slightly larger force constant than that in benzene.
Girish Kumar,K; Saji, John K; Indira, C J(Indian Journal of Chemical Technology, November 18, 2005)
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Abstract:
This paper describes the fabrication of an ion-selective electrode in which a polymeric Schiff base complex of cobalt(II) is used as the ionophore.The main advantage of the electrode is that it is mechanically stable upto 3 months..The electrode shows a linear response in the range of 2.5 × 10-5-0.5 × 10-1 mol dm-3. The response time of the electrode is 30 s.The pH range at which the electrode works is 3.8 to 6.8. The electrode was found to be selective towards chloride ion in the presence of ions like Na+, Ca2+, Mn2+, ,Fe3+, Co2+, Ni2+, Cu2+, Zn2+, CH3COO-, NO3-, SO42- ,Br- and NO2-.
Chinthu, Romeo; Dr. Paulose, C S(Cochin University of Science and Technology, August 17, 2012)
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Abstract:
The present study deals with the Cholinergic Receptor subtypes functional regulation in spinal cord injured monoplegic rats: Effect of 5-HT GABA and bone marrow cells.Spinal cord injury causes permanent and irrevocable motor deficits and neurodegeneration. Disruption of the spinal cord leads to diminished transmission of descending control from the brain to motor neurons and ascending sensory information. Behavioural studies showed deficits in motor control and coordination in SCI rats. Cholinergic system plays an important role in SCI, the evaluation of which provides valuable insight on the underlying mechanisms of motor deficit that occur during SCI. The cholinergic transmission was studied by assessing the muscarinic and nicotinic receptors; cholinergic enzymes- ChAT and AChE; second messenger enzyme PLC; transcription factor CREB and second messengers - IP3, cAMP and cGMP. We observed a decrease in the cholinergic transmission in the brain and spinal cord of SCI rats. The disrupted cholinergic system is the indicative of motor deficit and neuronal degeneration in the spinal cord and brain regions. SCI mediated oxidative stress and apoptosis leads to neuronal degeneration in SCI rats. The decreased expression of anti oxidant enzymes – SOD, GPx and neuronal cell survival factors - BDNF, GDNF, IGF-1, Akt and cyclin D2 along with increased expression of apoptotic factors – Bax, caspase-8, TNFa and NF-kB augmented the neuronal degeneration in SCI condition. BMC administration in combination with 5-HT and GABA in SCI rats showed a reversal in the impaired cholinergic neurotransmission and reduced the oxidative stress and apoptosis. It also enhanced the expression of cell survival factors in the spinal cord region. In SCI rats treated with 5-HT and GABA, the transplanted BMC expressed NeuN confirming that 5-HT and GABA induced the
differentiation and proliferation of BMC to neurons in the spinal cord. Neurotrophic factors and anti-apoptotic elements in SCI rats treated with 5-HT and GABA along with BMC rendered neuroprotective effects accompanied by improvement in behavioural deficits. This resulted in a significant reversal of altered cholinergic neurotransmission in SCI. The restorative and neuro protective effects of BMC in combination with 5-HT and GABA are of immense therapeutic
significance in the clinical management of SCI.
Description:
Department of Biotechnology, Cochin University of Science and Technology
Abdul Rasheed, T M; Moosad, K P B; Nampoori, V P N; Sathianandan, K(American Chemical Society, 1987)
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Abstract:
Vibrational overtone spectra of acetophenone and benzaldehyde in the visible and near-infrared regions are studied by the
dual beam thermal lens and the conventional near-infrared absorption techniques. The observed increase in the mechanical
frequency of the aryl CH bond from that of benzene is attributed to the decrease in the aryl CH bond length caused by
the electron-withdrawing property of the substituents. Overtone spectra also demonstrate that acetophenone contains two
types of methyl CH bonds arising from the anisotropic environments created by oxygen lone pair and carbonyl P electrons.
The local-mode parameters of the two types of CH bonds are compared with those of acetone and acetaldehyde. The possible
factors influencing the methyl CH bonds in acetophenone are discussed.
Paulose,C S; Dakshinamurti,K(Department of Biotechnology, June 12, 1987)
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Abstract:
Chronic catheterization is illustrated using vascular-access-port model SLA where the port is surgically placed subcutaneously on
the back of the rat. The catheter is tunnelled to the neck and inserted into the jugular vein . Within 24 h rats showed normal blood
pressure and blood samples were collected at intervals with minimal stress to the animals . A comparison of the plasma catecholamine
of blood collected from vascular-access-ports with that obtained from decapitation indicates that there was minimal stress to the rats
when blood was drawn through the vascular-access-port.
Kesavankutty,V; Dr.Leelakrishnan, P(Cochin University Of Science And Technology, March 28, 1985)
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Abstract:
In India, film censorship originated with Cinematograph Act 1918 empowering
the Provincial Governments to establish censorial authorities. In 1949, an
amendment provided for a Central Board of Film Censors. In 1952, a new
legislation gave the Central Government enormous powers, making the Board
to function as a department of the Central Government. The Government had
control over the Board with the mechanism of issuing 'directions' to the censors
and laying down censorship rules. The legislation did not provide any objective
criteria for censoring films. The 1959 amendment, aimed at curing this defect,
only incorporated the grounds contained in Article 19(2) of the Constitution. Even
after expert studies and a significant decision by the Supreme Court, pointing
out the inadequacy of the existing system, and governmental attempts to bring
reforms by way of fresh directions, appointment of appellate authority and framing
of new rules, the system still warrants radical change. The thesis explores them.
Description:
Department of Law,Cochin University Of Science And Technology
Manju,Paulson; Mohanan, P; Sona,Kundukulam O(Microwave and Optical Technology Letters, September 5, 2000)
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Abstract:
A compact microstrip antenna with circular polarization radiation is demonstrated.A reducation in the required parameters for achieving CP radiation makes the present antenna design simpler
Aanandan,C K; Mohanan, P; K G Nair(Department of Electronics, August 13, 1984)
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Abstract:
Design and development of a circularly polarized and matched H-plane sectorial horn antenna have been reported By
proper trimming of the flange parameters any desired polarization can be obtained from the horn
Design of a dual-port circular patch antenna with a sector-slot for dual-frequency operation is presented. The antenna resonates at two distinct frequencies with orthogonal polarizations and broad radiation characteristics. Unlike the conventional circular patch, this antenna can be microstrip-fed to operate at either of the resonances. The two polarizations can be simultaneously excited using two electromagnetically coupled ports with an isolation better than −30 dB between the ports. This antenna has the added advantage of size reduction of 44% compared to the conventional circular patch without any reduction in gain.