Jayadevan Nair,S; Dr.Sadasivan Nair,G(Cochin University of Science and Technology, March 27, 2006)
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Abstract:
The overall focus of the thesis involves the performer's rights in india -A study with special reference to the audiovisual industry.The performer is the disseminator of works of literary, dramatic artistic and musical authorship .The challenge of studying the audiovisual industry is the low level of data documentation and transparency in transactions compounded by the low awareness of legal issues. The first five chapters of the study trace the evolution of performers’ rights with particular impetus on three diverse jurisdictions both at the judicial and statutory levels as well as from the collective bargaining platform.The study also seeks to pin point the major obstacles that the performers have had to encounter in their quest for equal rights under the umbrella of intellectual property the world over.the status of the performer through the international instruments - the Rome convention, the WPPT and the envisaged Protocol to the audiovisual performance.A grant of rights to the performer either under Copyright or labor law need not improve matters for the performer unless the institutional grievance redressal is firmly put in place.There is a need for clearer delineation
between the definitions of audio and audiovisual fixations. Under the Indian law the terms representing these have been sound records and cinematographs respectivel.Performer and the Philosophy of Intellectual Propertyeffectively. But this is not to deny the fact that these institutions, organizations and practices could very well rise to the occasion when the rights regime comes into force.
Description:
School
of Legal Studies, Cochin University of Science and Technology
Santhosh, M; Dr.Nair, N G K(Cochin University of Science and Technology, September , 1985)
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Abstract:
The Kerala region which forms a significant segment of the
south—western Indian shield, dominantly comprises charnockites,
khondalites and migmatitic gneisses of Precambrian age.
Recent investigations have revealed the occurrences of a
number of younger granite and syenite plutons in this region,
.spatially related to regional fault—lineaments. The granite
of Ambalavayal in Wynad district of northern Kerala is a
typical member of this suite of intrusives. The thesis is
based on a comprehensive study in terms of geology, petrology,
geochemistry and petrogenesis of the Ambalavayal granite,
basement gneisses, associated pegmatites, quartz veins and
related mineralization that together cover an area of about
90 sq km in wynad district of northern Kerala.
Santosh, M; Dr.Nair, N G K(Cochin University of Science And Technology, September , 1985)
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Abstract:
The Kerala region which forms a significant segment of the
south—western Indian shield, dominantly comprises charnockites,
khondalites and migmatitic gneisses of Precambrian age.
Recent investigations have revealed the occurrences of a
number of younger granite and syenite plutons in this region,
.spatially related to regional fault—lineaments. The granite
of Ambalavayal in Wynad district of northern Kerala is a
typical member of this suite of intrusives. The thesis is
based on a comprehensive study in terms of geology, petrology,
geochemistry and petrogenesis of the Ambalavayal granite,
basement gneisses, associated pegmatites, quartz veins and
related mineralization that together cover an area of about
90 sq km in wynad district of northern Kerala
Anandaraj,N; Seralathan,P(Depatrtment of Marine Geology & Geophysics, Faculty of Marine Sciences, 2002)
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Abstract:
In the present thesis the petrographic, geochemical and digenetic variability of the sediments in the islands of Kavaratti and Minicoy has been investigated .The beach profile studies show that in the Kavaratti lagoon beach, the slope is steeper in the southern and south central part than in the northern end’s marginal deposition is taking place in the northern end of the Kavaratti island, whereas a marginal erosion is observed at the southern end. In Minicoy the slope of the lagoon beach is gentle in the south and is slightly steeper at the northern part of the beach. The southern and northern beach sections show a marginal deposition. Based on the mineralogical and geochemical studies it is concluded that the main digenetic changes observed is the transformation of aragonite to LMC.The transformation takes place mainly in the vadose zone and is caused by the abundance of fresh water infiltration.
Unnikrishnan,P; Dr.Muraleedharan Nair, S(Cochin University Of Science And Technology, December , 2000)
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Abstract:
Environmental persistence, fate and interactive effects with living
organisms - beneficial or toxic - of trace elements are directly related to the
physico-chemical forms in which they occur. Knowledge on the association of
trace metals with different environmental compartments in an aquatic system
are, therefore, essential for monitoring the trace metal pollution as well as
transport, fate and bio-geochemical cycles of trace metals. This thesis is a
modest attempt in assessing the trace metal levels and their behaviour in the
aquatic environment of Kuttanad, an aquatic system that is severely affected
by man's intervention on natural processes, by seriously evaluating the levels
of trace metals in dissolved and particulate phases and also in the different
chemical fractions of the sediments.
Description:
Department of Chemical Oceanography, School of Marine Sciences,
Cochin University of Science and Technology
Unnikrishnan,P; Muraleedharan, Nair S(Department of Chemical Oceanography, School of Marine Sciences, 2000)
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Abstract:
This thesis is a modest attempt in assessing the trace metal levels and their behavior in the aquatic environment of Kuttanad, an aquatic system that is severely affected by man’s intervention on natural processes, by study seriously evaluating the levels of trace metals in dissolved and particulate phases and also in the different chemical fractions of the sediments. Understanding of the distributions, variations and transfer processes of trace metals in different environmental phases in the backwaters of Kuttanad is vital for the assessment of the water pollution problems and study the ecology of the area which contributes 20% of the rice production in the State of Kerala. Kuttand is a low-lying, shallow bay formed as a result of geological uplift. The major economic activity is agriculture involving 40% of the population. About 1.5% of the people are engaged in aquaculture. The trace metal distribution in the Kuttand backwaters is considerably influenced by the tropical features of the location and by human activities including agricultural activities and construction of salinity barrier. In this study an attempt is made to differentiate the metals in the sediment into exchangeable, reducible and resistant fractions in the sediments.
Suneesh, C V; Dr. Gopidas, K R(Cochin University of Science and Technology, May 3, 2010)
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Abstract:
This thesis Entitled phenylethynylarene based Donor-Acceptor systems:Desigh,Synthesis and Photophysical studies. A strategy for the design of donor-acceptor dyads, wherein decay of the charge separated (CS) state to low lying local triplet levels could possibly be prevented, is proposed. In order to examine this strategy, a linked donor-acceptor dyad BPEPPT with bis(phenylethYlly/)pyrene (BPEP) as the light absorber and acceptor and phenothiazine (PT) as donor was designed and photoinduced electron transfer in the dyad investigated. Absorption spectra of the dyad can be obtained by adding contributions due 10 the BPEP and PT moieties indicating that the constituents do not interact in the ground stale. Fluorescence of the BPEP moiety was efficiently quenched by the PT donor and this was attributed to electron lransfer from PT to BPEP. Picosecond transient absorption studies suggested formation of a charge separated state directly from the singlet excited state of BPEP. Nanosecond flash photolysis experiments gave long-ived transient absorptions assignable to PT radical cation and BPEP radical anion. These assignments were confirmed by oxygen quenching studies and secondary electron transfer experiments. Based on the available data, energy level diagram for BPEP-PT was constructed. The long lifetime of the charge separated state was attributed to the inverted region effects. The CS state did not undergo decay to low lying BPEP triplet indicating the success of our strategy
Description:
Photosciences and Pholonics
Chemical Sciences and Technology Division
Sreevalsam,Gopinath; Saramma, A V(Faculty of Marine biology, June 19, 2002)
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Abstract:
This study aims to reveal the ability of bacteria isolated from Cochin estuary and the Arabian Sea to produce phosphatases, important characters of the enzymes, its ability to utilize organophosphorus compounds as source of phosphate and also their role in degradation of organophosphorus pesticides. It deals with isolation, identification and screening of bacteria for phosphatase production, and it describes the effect of cultural conditions on growth and phosphatase production. The effect of various factors like pH, NaCl concentration, temperature of incubation, carbon source, period of incubation etc. on growth and phosphatase production by the two selected species were studied to establish suitable environment for phosphatase production by these bacteria. In this study regulation of phosphatase synthesis, characteristics of acid and alkaline phosphatases are discussed.
Nibu, A George; Dr. Radhakrishnan, P(Cochin University of Science and Technology, May 14, 2001)
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Abstract:
The emergence of lasers in the early sixties has not only revolutionized the field of optics
and communication but also paved new ways in the field of material characterization. Material studies using photothermal techniques possess certain unique characteristics and advantages over conventional methods. The most important aspect of photothennal techniques is their ability to perform noncontact and nondestructive measurement. Photoacoustics, photothermal deflection, thermal lens, photothermal radiometry and photopyroelectric methods are some of the commonly used and powerful techniques for the thermal and optical characterization of materials using lasers.
In this thesis the applications of photoacoustic and photothermal deflection techniques
for the thermal and optical characterization of different photonic materials, namely,
semiconductors, liquid crystals and dye-doped polymers are discussed
Description:
International
School of Photonics, Cochin University of Science and Technology
Satheesh, Kumar M K; Dr.Girijavallabhan,C P(Cochin University of Science and Technology, August 27, 1987)
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Abstract:
The discovery of the Photoacoustic (PA) effect was a remarkable
achievement and was relegated to the scientific footnotes of the nineteenth
century. However, after the advent of lasers and sophisticated
electronics this effect was rediscovered and it has established itself
as an important research and analytical tool in numerous areas, including
physics, chemistry, biology and medicine. Quite recently, this phenomenon
has made its impact in the field of laser technology for applications
such as the developments of highly efficient active media for
lasers, high quality optics and sensitive laser power monitoring devices.
This thesis presents the work carried out by the author in this field
during the past few years at the Department of Physics in Cochin University
of Science and Technology.
The studies discussed here are mostly based on the development
of a sensitive PA laser power meter and its various applications using
different laser systems available in the laboratory. This includes the
development of a current regulated CW C0 laser and its application
in material processing. The thesis contains seven chapters which by and large are self
contained with separate abstracts and references. The first chapter
which is divided into two parts presents an introduction to the PA effect
and its present status. Part A reviews the basic theory of laser and
gives a sum mary of various lasers and their applications. Part B presents
a brief description of PA effect and its suitability as a spectroscopic
tool followed by its applications to various branches of science and
technology.
Description:
Department of Physics, Cochin
University of Science and Technology
Madhusoodanan, K N; Dr. Jacob, Philip(Cochin University of Science And Technology, November , 1988)
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Abstract:
This thesis work has mainly concentrated on the investigation of the ,optical and thermal properties of binary semiconducting chalcogenide glasses belonging to the AivB¥5x and AZBXEX families. The technique used for these studies is a relatively new one namely, the photoacoustic (PA) technique. This technique is based on the detection of acoustic signal produced in an enclosed volume when the sample is irradiated by an intensity modulated radiation. The signal produced depends upon the optical properties of the sample, and the thermal properties of the sample, backing material and the surrounding gas. For the present studies an efficient signal beam gas-microphone PA spectrometer, consisting of a high power
Xenon lamp, monochromator, light beam chopper, PA cell with microphone and lock-in amplifier, has been set up. Two PA cells have been fabricated: one for room temperature measurements and another for measurements at high temperatures. With the high temperature PA cell measurements can be taken upto 250°C. Provisions are incorporated. in both the cells to change the volume and to use different backing materials for the sample. The cells have been
calibrated by measuring the frequency response of the cells using carbon black as the sample
Description:
Department of physics, Cochin University of Science And Technology
Syamala,S B; Dr.Sudha Kartha,C(Cochin University of Science & Technology, January , 2004)
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Abstract:
Photoconductivity (PC) processes may
be the most suitable technique for obtaining information about the states in the
gap. It finds applications in photovoItaics, photo detection and radiation
measurements. The main task in the area of photovoltaics, is to increase the
efficiency of the device and also to develop new materials with good optoelectronic
properties useful for energy conversion, keeping the idea of cost
effectiveness. Photoconduction includes generation and recombination of carriers
and their transport to the electrodes. So thermal relaxation process, charge
carrier statistics, effects of electrodes and several mechanisms of recombination
are involved in photoconductivity.A major effect of trapping is to make the experimentally observed decay
time of photocurrent, longer than carrier lifetime. If no trapping centers are
present, then observed photocurrent will decay in the same way as the density
of free carriers and the observed decay time will be equal to carrier lifetime. If
the density of free carriers is much less than density of trapped carriers, the
entire decay of photocurrent is effectively dominated by the rate of trap emptying
rather than by the rate of recombination.In the present study, the decay time of carriers was measured using
photoconductive decay (PCD) technique. For the measurements, the film was
loaded in a liquid Helium cryostat and the temperature was controlled using
Lakshore Auto tuning temperature controller (Model 321). White light was
used to illuminate the required area of the sample. Heat radiation from the light
source was avoided by passing the light beam through a water filter. The decay current. after switching off the illumination. was measured using a Kiethely
2000 multi meter. Sets of PCD measurements were taken varying sample
temperature, sample preparation temperature, thickness of the film, partial
pressure of Oxygen and concentration of a particular element in a compound.
Decay times were calculated using the rate window technique, which is a decay
sampling technique particularly suited to computerized analysis. For PCD curves
with two well-defined regions, two windows were chosen, one at the fast decay
region and the other at the slow decay region. The curves in a particular window
were exponentially fitted using Microsoft Excel 2000 programme. These decay
times were plotted against sample temperature and sample preparation
temperature to study the effect of various defects in the film. These studies
were done in order to optimize conditions of preparation technique so as to get
good photosensitive samples. useful for photovoltaic applications.Materials selected for the study were CdS, In2Se3, CuIn2Se3 and CuInS2•
Photoconductivity studies done on these samples are organised in six chapters
including introduction and conclusion.
Description:
Department of Physics,
Cochin University of Science and Technology