|
Showing 1 - 17 of
17 matches in All Departments
The group contribution method 'UNIFAC-VISCO' has become popular
because of its reliable predictions of dynamic & kinematic
viscosities, but suffering from a serious drawback for
non-availability of sufficient group interaction parameters. A new
approximate technique has been proposed in this study, in which the
so called UNIFAC-VLE parameters can be used instead of the original
UNIFAC-VISCO parameters. This technique was tested for 28 binary
liquid systems of different categories & the values of overall
AAD (%) for 7 classes of organic binary liquid systems were found
to be below 6.1%. These include alcohols, alkanes, aromatics,
ester, cyclic ether, as well as acetonitrile & sulfolane which
are yet to be done. Predictions were carried out based on four
different considerations: (a) original parameters, (b) UNIFAC-VLE
parameters, (c) by considering, or (d) ignoring temperature effects
on group interaction parameters. As the UNIFAC-VLE parameters are
easily available & applicable for a broad range of organic
compounds, its use in place of original model parameters would
generalize the UNIFAC-VISCO model for predicting dynamic &
kinematic viscosities.
Psychological stress has extreme adverse consequences on health.
However, the molecular mechanisms that mediate and accelerate the
process of aging due to stress hormone are not well defined. This
review has focused on diverse molecular paths that come out in
response to chronic psychological stress via releasing of excessive
glucocorticoids (GCs), involved in the aging process. GCs suppress
transcription of nuclear cell adhesion molecules which impair
synaptic plasticity, memory formation, and cognitive ability.
Again, GCs promote muscle atrophy by means of motivating ubiquitin
proteasome system and can repress muscle protein synthesis by
inhibition of PI3-kinase/Akt pathway. GCs also inhibit
interleukin-2 synthesis through suppressing T cell receptor signal
that leads to loss of T cell activation, proliferation, and B-cell
activation. Moreover, GCs increase the expression of collagenase-3,
RANK ligand, and colony stimulating factor-1 that induce bone
resorption. In general, stress-induced GCs can play causal role for
aging and age-related disorders.
The contents of this book are derived from a Masters work. This
book will benefit the students, farmers and researchers who are
involved in poultry nutrition. The book details aflatoxin in
poultry feed and nutrient availability and requirement in poultry
feed in Bangladesh in different seasons. The book will give
information on different sources of feed and feeding practices
followed by the poultry farms.
The contents of this book are derived from a PhD work. This book
will be benefit the students and researchers who are involved in
ruminant nutrition research especially in developing countries
where low quality forages are a major part of ruminant diets. The
first chapter of this book details factors that limit forage
digestion, methods that can improve forage quality and supplements
including herbs and spices that can enhance microbial activity to
increase forage utilisation by ruminants. The 2nd chapter describes
the laboratory methods that can be used to determine chemical
composition and their application to characterise selected forages,
spices and legumes for their nutritional as well as supplementary
value for ruminant feeding. The 3rd and 4th chapter present data on
the in vitro forage degradability and fermentation profiles in
response to different experimental treatments. Finally, the last
chapter presents summary and conclusions which may help develop
strategies for the use of spices as supplements for ruminants.
Poultry farming is an emerging industry in world. But now a day it
faces many problems. Mycoplasmosis is one of them. It causes a
significant thrashing to the poultry industry. By studying this
book researchers will easily known about mycoplasmosis problem in
broiler farming. The efficacy of tylosin tartrate and tiamulin
hydrogen fumarate against mycoplasmosis and their effects on body
weight gain of the treated broiler is discussed in this book. This
book will also help to researchers who work on pharmacological
field.
Consumer preference for food is motivated by many criteria and
especially by its flavor. Plain dahi has a weak but distinctive and
fragile flavor that is influenced by different factors, for
example, viscosity, nonvolatile components, and aroma. Now there
has been a good demand for fruits dahi. Traditionally, fruit like
strawberry, jackfruit, apricot and black current are used for
manufacture of fruit yoghurt. Recently very few research have been
carried out on fruits dahi. When fruits juice is added in milk for
the preparation of dahi, the taste, flavor and nutrient content of
dahi is increased. Among different types of fruit, mango is
customary fruit and the price of mango is cheaper than other
fruits. Researcher and students of dairy chemistry will be
benefited by studying this book and will know the details of
manufacture of different types of dahi, determination procedure of
nutritive value of milk, dahi and mango juice. Manufacturer will be
able to produce mango fruit dahi using appropriate level of mango.
It was a field and lab based research. During this research, 16
genotypes of brinjal collected from different parts of Bangladesh.
In the field level, these genotypes were cultivated and coefficient
of variation and correlation coefficient were determined. The
phenotypic coefficient of variation was higher than genotypic
coefficient of variation in most characters.Correlation coefficient
was determined to find out the interrelationship among the
different characters. Fruit yield per plant was positively and
significantly correlated with plant height, number of branches per
plant, number of fruits per plant, number of inflorescence per
plant, fruit breadth and individual fruit weight. On the other hand
negative correlation was observed with flowering time and fruit
length. In the laboratory research, leaf sample of the genotypes
was used for isozyme analysis. The electrophoresis of the proteins
of leaves was carried out using Polyacrylamide Gel Electrophoresis
(PAGE) technique and the gels were stained with Peroxidase (POD),
Glutamate Oxaloacetate Transaminase (GOT) and Malate Dehydrogenase
(MDH) isozyme and zymogram analysis was performed.
The purpose of this research was to find out the nature of health
hazards caused by river erosion and analysis patterns of economic
and social adaptation among river-bank erosion-induced displaces in
Dacope Upazila under Khulna District of Bangladesh.The need to
integrate hazard analysis and mitigation with the broader economic
and social context is discussed.It is argued that the capacity of
people to respond to environmental threats is a function of not
only the physical forces which affect them, but also of underlying
economic and social relationships which increase human
vulnerability to risk.People are very vulnerable in the study area
owing to river erosion.In the study area, nearly every one of the
respondents (91.67%) were ill health the greater part of the people
(65.8%)collected drinking water from the ponds. large amount
(79.2%) were victim of Diarrhea and Dysentery, half of the
population (39.2%)were Illiterate (30.8%) were involved in daily
labour, (46.67%) possessed income range between BDT 1001 to 2000.So
time has come, a new era has begun, we have to address problems,
faced by the victims of river erosion and have to take proper
initiatives for their developm
Air-breathing fishes have become of great interest in recent years
for several reasons in different countries over the world. These
include the many adaptations of their respiratory and
cardiovascular systems for obtaining oxygen from air and water,
adaptation in their food and feeding habits, reproduction and
behavior. Also, they are important source of animal protein
especially in drought and flood prone areas. At present,
air-breathing fishes are gradually introducing in different
aquaculture practices like cage culture, waste fed aquaculture etc.
Unfortunately, there is no systematic record of air-breathing
fishes in Bangladesh. Species profile of air-breathing fishes with
special emphasis on their air-breathing organs are described in
this document. So, we strongly believe that this document would be
helpful to many scientists, students and teaching staff in
Bangladesh and other countries.
|
|