The rising pressure of Population, together with the constantly changing
technologies, and development perspectives, contribute to the ever increasing
volumes of wastes in different forms. The solid and liquid wastes generated in the
urban areas were considered a burden to the society, and hazardous to the
environment. The fact is that the growth of consumerist culture and aimless
throwing of refuse by the people created the outbreak of environmental pollution.
Unhygienic environment and solid waste accumulation coincided with mosquito
breeding which causes, the spread of most epidemics. The rationale behind most of
the diseases is the unhygienic pattern followed by the people both in rural and urban
areas. As an environmental package, the disposal of solid waste from different
sources, such as house holds markets, commercial areas, slaughter houses, hospitals
and industries, therefore assumed crucial importance. So as a part of the theory and
practice, a study on the area, solid waste management of Arppukara Grama
Panchayat of Kottayam district is taken into consideration. The study conducted here
proposes, to examine the quality and quantity of the solid waste generated in the
panchayat and also it's impact on the existing social, economical, environmental and
ecological systems
Description:
Journal of Global Economy,
Volume 6 No 1, JANUARY-FEBRUARY, 2010
Sreekumar, J; Nandakumaran, V M(Physics Letters, October 21, 1985)
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Abstract:
The phenomenon of two-soliton resonances of the Kadomtsev-Petviashvilli equation for the superfluid surface density fluctuation in He films is studied. The velocity of the resonant soliton is obtained.
Sreekumar, J; Nandakumaran, V M(Springer, December , 1989)
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Abstract:
The dynamics of saturated two-dimensional superfluid4He films is shown to be governed by the Kadomtsev-Petviashvili equation with negative dispersion. It is established that the phenomena of soliton resonance could be observed in such films. Under the lowest order nonlinearity, such resonance would happen only if two dimensional effects are taken into account. The amplitude and velocity of the resonant soliton are obtained.
Sugunan, S(Indian Journal of Chemistry, February , 1983)
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Abstract:
Solubilities of 4-nitrobenzoic acid at 25°, 35° and 42°C have
been determined in water and in the presence of several concentrations
of electrolytes. The free energies, enthalpies and entropies
of transfer are also reported. The data have been rationalized
by considering the structure-breaking effects of the ions of
the salts and the requirement of the localized hydrolysis model.
The theory of Symons is not satisfactory to rationalise the
experimental data.
Bindhu, C V; Harilal, S S; Nampoori, V P N; Vallabhan, C P G(World Scientific, 1999)
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Abstract:
Dual beam thermal lens tecbnique is successfully employed for the determination of absolute
Fluorescence quantum yield of rhodamine 6G lnser dye in different solvents. A
532 nm radiation from a Q-switched Nd:YAG laser was used for the excitation purpose.
The fluorescence quantum yield values are found to be strongly influenced by environmental
effects. It has been observed that fluorescence yield is greater for rhodamine 6G
in ethylene glycol system than in water or in methanol. Our results also indicate that
parameters like concentration of the dye solution, aggregate formation and excited state
absorption affect the absolute values of fluorescence yield significantly.
Sajan, P; Dr. M. Junaid Bushiri(Cochin University of Science and Technology, June 5, 2016)
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Abstract:
The research on nanocrystalline materials have been of great interest for
more than 20 years due to its fundamental properties as well as development of
technology based on it. Non-toxic semiconducting nanocrystals are important
materials with wide range of applications in the areas of biotechnology, medicine,
bio-optics and for the fabrication light emitting and harvesting devices. Majority of
the II-VI semiconductors possess wide band gap along with high iconicity and are
important materials for optoelectronic devices operating under the UV excitation
sources. Among the II-VI semiconductors, ZnS is a material with good optical
transmission in the visible region with large exciton binding energy of about 40
meV. ZnS usually crystallizes in cubic form which is zinc blende or sphalerite and
its hexagonal form is in wurtzite phase. The cubic sphalerite phase of ZnS has a
band gap of 3.68 eV whereas the hexagonal (wurtzite) phase has a band gap of 3.77
eV. Moreover, ZnS is a good host lattice phosphor for photonic applications and
electroluminescent devices because of its wide band gap.
The present thesis deals with the synthesis and photoluminescence studies
of micro and nanostructured ZnS by hydrothermal and solvo-hydrothermal method.
Thesis is also focused on bioimaging application of these materials.
Somatic embryos were induced from scutellar callus of immature zygotic embryos of T aestivum cv.
Chinese Spring. Observations on precociously germinating somatic embryos revealed that: (i) In the initial
stages the coleoptile is split, exposes the shoot apex and forms a green trichomatous leafy structure.
In the germinating zygotic embryo, the coleoptile is tubular, (ii) Unlike what has been inferred earlier the
leafy structure is the coleoptile and not the scutellum, (iii) Bipolarity of the embryoid is established later
when root develops at the basal end.
When simulation modeling is used for
performance improvement studies of complex systems such as
transport terminals, domain specific conceptual modeling
constructs could be used by modelers to create structured
models. A two stage procedure which includes identification of
the problem characteristics/cluster - ‘knowledge acquisition’
and identification of standard models for the problem cluster –
‘model abstraction’ was found to be effective in creating
structured models when applied to certain logistic terminal
systems. In this paper we discuss some methods and examples
related the knowledge acquisition and model abstraction stages
for the development of three different types of model categories
of terminal systems
Description:
Proceedings of the World Congress on Engineering and Computer Science 2012 Vol II
WCECS 2012, October 24-26, 2012, San Francisco, USA
Syed Aftab, Husain Rizvi; Dr.Wazir, Hasan Abdi(Cochin University of Science And Technology, March , 1984)
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Abstract:
This thesis is an attempt to throw light on the works
of some Indian Mathematicians who wrote in Arabic or
persian In the Introductory Chapter on outline of
general history of Mathematics during the eighteenth
Bnd nineteenth century has been sketched. During that
period there were two streams of Mathematical activity.
On one side many eminent scholers, who wrote in Sanskrit,
.he l d the field as before without being much influenced
by other sources. On the other side there were scholars
whose writings were based on Arabic and Persian text
but who occasionally drew upon other sources also.
Description:
Department of Mathematics and Statistics, Cochin University of Science and Technology
Revi Kala, S; Dr. Ramamurthy, V D(Cochin University Of Science And Technology, March 14, 1985)
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Abstract:
The present study was undertaken to observe the phytoplankton (distones,dinoflageliates,and blue green algae) blooms occurring along the south west coast of India at various seasons from February 1982 to august 1984.The centers selected for collection and observation were off Quilon, off Alleppey ,off Calicut. A total number of 25 phytoplankton blooms were studied. Characterisation of phytoplankton blooms include observing the cell counts from the day of its appearance to its day of disappearance. The appearance ,duration and locality of the blooms were also noted
Description:
School Of Marine Sciences
Cochin University Of Science And Technology
Asha Gopalakrishnan; Dr.Unnikrishnan Nair, N(Cochin University Of Science And Technology, May 15, 1995)
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Abstract:
The term reliability of an equipment or device is
often meant to indicate the probability that it carries out
the functions expected of it adequately or without failure
and within specified performance limits at a given age for a
desired mission time when put to use under the designated
application and operating environmental stress. A broad
classification of the approaches employed in relation to
reliability studies can be made as probabilistic and
deterministic, where the main interest in the former is to
device tools and methods to identify the random mechanism
governing the failure process through a proper statistical
frame work, while the latter addresses the question of
finding the causes of failure and steps to reduce individual
failures thereby enhancing reliability. In the
probabilistic attitude to which the present study subscribes to, the concept of life distribution, a mathematical
idealisation that describes the failure times, is
fundamental and a basic question a reliability analyst has
to settle is the form of the life distribution. It is for
no other reason that a major share of the literature on the
mathematical theory of reliability is focussed on methods of
arriving at reasonable models of failure times and in
showing the failure patterns that induce such models. The
application of the methodology of life time distributions is
not confined to the assesment of endurance of equipments and
systems only, but ranges over a wide variety of scientific
investigations where the word life time may not refer to the
length of life in the literal sense, but can be concieved in
its most general form as a non-negative random variable.
Thus the tools developed in connection with modelling life
time data have found applications in other areas of research
such as actuarial science, engineering, biomedical sciences,
economics, extreme value theory etc.
Description:
Division of Statistics, School of Mathematical Sciences,
Cochin University of Science and Technology