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Search Results: 1 - 10 of 165 matches for " Biplab Kahar "
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Screening for Aphid Incidence on Some Potato Germplasm in Plains of West Bengal  [PDF]
Biplab Kahar, Amitava Konar
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.76036
Abstract: A field trial was conducted to study the impact of various potato germplasm against aphids, Myzus persicae (Sulzer) and Aphis gossypii Glover (Aphididae: Hemiptera) during rabi season from November to March in 2012-2013 and 2013-2014, respectively at Adisaptagram Block Seed Farm, Hooghly, West Bengal. The population of aphids was started on potato crop in between third week of December and first week of January irrespective of various germplasms, except K. Chipsona-2, where its infestation was initiated during second and third week of January. Then, their population was gradually increased to reach its critical level (ETL) during first and second week of January in most of the potato germplasm, except in K. Anand, K. Chipsona-1, K. Chipsona-2 and Sailaja, where it was crossed in between fourth week of January and first week of February. The peak population of aphids was observed during third and fourth week of February in most of the potato germplasm. It was observed that K. Ashoka, K. Badshah, K. Chandramukhi, K. Jawahar, K. Jyoti and K. Pukhraj were highly susceptible to the pests, while K. Anand and K. Sutlez were moderately susceptible but K. Chipsona-1 , K. Chipsona-2 and K. Sailaja were less susceptible or tolerant to the pests. Maximum tuber yield (t/ha) of potato was recorded in K. Badshah (36.58 - 43.92) while it was lowest in K. Chandramukhi (22.08 - 22.12).
Quality issues of laboratory reagents
Kahar Manoj
Asian Journal of Transfusion Science , 2008,
Abstract:
A Finite Element Study of Elastic-Plastic Hemispherical Contact Behavior against a Rigid Flat under Varying Modulus of Elasticity and Sphere Radius  [PDF]
Prasanta Sahoo, Biplab Chatterjee
Engineering (ENG) , 2010, DOI: 10.4236/eng.2010.24030
Abstract: The present study considers a finite element analysis of elastic-plastic axi-symmetric hemispherical contact for a frictionless deformable sphere pressed by a rigid flat. The material of the sphere is modeled as elastic perfectly plastic. Analysis is carried out to study the effect of varying modulus of elasticity and sphere radius in wide range of dimensionless interference until the inception of plasticity as well as in plastic range. Results are compared with previous elastic-plastic models. It is found that materials with Young’s modulus to yield strength (E/Y) ratio less than and greater than 300 show strikingly different contact phenomena. The dependency of E on dimensionless interference at which the plastic region fully covers the surface is observed. However with different radius, finite element study exhibits similar elastic-plastic phenomena.
Abstract Harmonic Analysis on Spacetime
Kahar El-Hussein
Physics , 2014,
Abstract: In this paper, we consider the Poincare group (space time). In mathematics, the Poincar\'e group of spacetime, named after Henri Poincar\'e, is the group of isometries of Minkowski spacetime, introduced by Hermann Minkowski. It is a non-abelian Lie group with ten generators. Spacetime, in physical science, single concept that recognizes the union of space and time, posited by Albert Einstein in the theories of relativity. One of the interesting problems for Mathematicians and Physicists is. Can we do the Fourier analysis on space time. The purpose of this paper is to define the Fourier transform the Poincar\'e group, and then we establish the Plancherel theorem for spacetime
Abstract Harmonic Analysis and Group Algebra on the Group AN
Kahar El Hussein
Mathematics , 2014,
Abstract: Consider the Iwasawa decomposition of the real semisimple Lie group. The purpose of this paper is to define the Fourier transform in order to obtain the Plancherel theorem on its maxima solvable Lie group. Besides, we prove the existence theorems for the invariant differential operators on this solvable. To this end, we give a classification of all left ideals of its group algebra
Abstract Harmonic Analysis on the General Linear Group GL(n,R)
Kahar El-Hussein
Mathematics , 2014,
Abstract: Consider the general linear group, which is not connected but rather has two connected components, the matrices with positive determinant and the ones with negative determinant. Consider the Iwasawa decomposition of its special linear group. We adopt the technique of the paper [12] to generalize the definition of the Fourier transform and to obtain the Plancherel theorem for the special linear group. Besides we prove that the component with negative determinant has a structure of group, which is isomorphic onto the group of the component with positive determinant in order to obtain the Plancherel theorem the general linear group
Abstract Harmonic Analysis on the General Affine Group GA(n,R)
Kahar El Hussein
Mathematics , 2014,
Abstract: The general linear group has two components and its the identity component, which consists of the real matrices with positive determinant and the set of all matrices with negative determinant. Since the general linear group is a two copies of the group of the identity component, so the general affine group. Consider the affine group, which is the semidirect product of the identity component with the real group of dimension. In this paper we generalize the Fourier transform to obtain the Plancherel theorem on this group and then, we establish the Plancherel theorem for the general affine group
The Style of ‘Lokaabharan’ in Indian Proverbs
Biplab Chakraborty
Folklore : Electronic Journal of Folklore , 2007,
Abstract: The changing pattern of Indian proverbs is very much reflected invarious literary creations, especially in modern Indian poetry. Proverbs are used in poetry as a mode of creative process which entails change. Indeed, it is mostly expressed in a poetic style of narration which may be termed as the style of ‘lokaabharan’. Various types of folk elements are used in the creative process and amongst such folk elements proverbs assume a very important position in the making of the style of ‘lokaabharan’.The central message of a proverb is often conveyed with a subtle touch of language use as a linguistic device. Patterns of changes in language use need to be examined with a view to measure the mode of expression of the proverb concerned. In order to understand the style of ‘lokaabharan’, we must examine how proverbs have been used as fixative factors. In this process, we need to compare and contrast the original proverbs used and their changing patterns available in the text of the poems concerned. Fixative factors are what may be called the core of folk elements used in a poem. This may be either a conscious creative effort or an unconscious artistic measure. It plays a vital role in conveying the central theme or message, whatever the case may be.
GLOBAL WARMING AND PATTERN OF MAIN ECONOMY IN SUNDARBAN
Biplab Das
International Journal of Trends in Economics Management and Technology , 2013,
Abstract: In this article, the phrase “global warming” refers tothe change in the Earth's global average surfacetemperature. Measurements show a global temperatureincrease of 1.4 °F (0.78 °C) between the years 1900 and2005. Global warming is closely associated with a broadspectrum of other climate changes, such as increases inthe frequency of intense rainfall, decreases in snow coverand sea ice, more frequent and intense heat waves, risingsea levels, and widespread ocean acidification. TheIntergovernmental Panel on Climate Change (IPCC) hasproduced several reports where the economics literatureon climate change is assessed. In 1995, the IPCCproduced its second set of assessment reports on climatechange. Working Group III of the IPCC produced a reporton the "Economic and Social Dimensions of ClimateChange." In the later third and fourth IPCC assessments,published in 2001 and 2007 respectively, the assessmentof the economics literature is divided across two reportsproduced by IPCC Working Groups II and III. In 2011IPCC Working Group III published a Special Report onRenewable Energy Sources and Climate Change.
d-Wave Order Parameter in Bi2212 from a Phenomenological Model of High T$_c$ Cuprates
Biplab Chattopadhyay
Physics , 1996, DOI: 10.1016/S0375-9601(96)00887-0
Abstract: A phenomenological lattice model of high $T_c$ cuprates including order parameter phase fluctuations is considered within the BCS approximation, to interpret the experimental data from ARPES measurements on Bi2212 samples. A Kosterlitz-Thouless (KT) transition temperature $T_c^{KT}$ is estimated below the mean field transition $T_c^{MF}$, phase boundaries between competing order parameters of different symmetries are obtained and best model parameters, fitting the ARPES gap of $d_{x^2-y^2}$ symmetry, are determined. Variation of $T_c^{KT}$, as a function of the dopant concentration $\delta$, is in qualitative agreement with experiments.
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