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Search Results: 1 - 10 of 316298 matches for " Chattopadhyay B.P. "
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Effect of Exposure on Respiratory Function Status of Firefighters in an Accidental Fire in a Chemicals Warehouse
Chattopadhyay B.P.,Gangopadhyay P.,Alam J.,Roychowdhury A
Indian Journal of Occupational and Environmental Medicine , 2004,
Golden Research Thoughts , 2012, DOI: 10.9780/22315063
Abstract: Soil pH, Electric Conductivity, Organic Carbon, NPK, Potassium, Sodium, Lime, are the essential nutrients, present in soil and helpful to growth of crops. Distribution of nutrients is unequal. In this paper, an attempt has been made to find out the level of nutrients and their distribution. It covers an area 75025 of hectares of agricultural land where 1 87, 937 population reside. Area covers 46, 683.87 sq hectors (34%) out of 138248.8 hectares of Baramati tahsil, where 76 % population are concentrated. Average village wise nutrient level of 400 soil samples from NLBC area of Baramati is calculated and presented graphically. It shows that NLBC area soil is Alkaline and indicates 11 % area are of high saline. Organic Carbon is high but there is not enough Nitrogen. Phosphorus and Potassium are in good condition. Villages Nimbut, Bajrangwadi and Late are in an excessive Alkaline condition of pH. Use of organic fertilizers, reducing excessive use of chemical fertilizers, green compost and wherever needed reclamation is recommended to maintain soil health.
Adenovirus Infection in Guinea Pig - A Case Study
Shankar B.P.
Veterinary World , 2008,
Abstract: [Veterinary World 2008; 1(9.000): 280-280]
Common Respiratory Diseases of Poultry
Shankar B.P.
Veterinary World , 2008,
Abstract: [Veterinary World 2008; 1(7.000): 217-219]
Advances in Diagnosis of Rabies
Shankar B.P.
Veterinary World , 2009,
Abstract: Rabies is a major zoonosis for which diagnostic techniques have been standardised internationally. Laboratory techniques are preferably conducted on central nervous system (CNS) tissue removed from the cranium. Agent identification is preferably done using the fluorescent antibody test. A drop of purified immunoglobulin previously conjugated with fluorescein isothiocyanate is added to an acetone-fixed brain tissue smear, preferably made from several parts of the brain, including the hippocampus, cerebellum and medulla oblongata. For a large number of samples, as in an epidemiological survey, the immunoenzyme technique can provide rapid results (the rapid rabies enzyme immunodiagnosis). FAT provides a reliable diagnosis in 98-100% of cases for all genotypes if a potent conjugate is used, while RREID detects only genotype 1 virus. Infected neuronal cells have been demonstrated by histological tests and these procedures will reveal aggregates of viral material (the Negri bodies) in the cytoplasm of neurones. However, the sensitivity of histological techniques is much less than that of immunological methods, especially if there has been some autolysis of the specimen. Consequently, histological techniques can no longer be recommended. As a single negative test on fresh material does not rule out the possibility of infection, inoculation tests, or other tests, should be carried out simultaneously. Newborn or 3-4-week-old mice are inoculated intracerebrally with a pool of several CNS tissues, including the brain stem, and then kept under observation for 28 days. For any mouse that dies between 5 and 28 days, the cause of death should be confirmed by FAT. Alternatively, a monolayer culture of susceptible cells is inoculated with the same material as used for mice. FAT carried out after appropriate incubation will demonstrate the presence or absence of viral antigen. Wherever possible, virus isolation in cell culture should replace mouse inoculation tests. The identification of the agent can be supplemented in specialised laboratories by identifying any variant virus strains through the use of monoclonal antibodies, specific nucleic acid probes, or the polymerase chain reaction followed by DNA sequencing of genomic areas. Such techniques can distinguish between field and vaccine strains, and possibly identify the geographical origin of the field strains. Virus neutralisation assays in cell cultures are the prescribed tests for international trade. [Vet. World 2009; 2(2.000): 74-78]
The crystallisation of the aluminium bronze with additions of Si, Cr, Mo and/or W
B.P. Pisarek
Archives of Materials Science and Engineering , 2007,
Abstract: Purpose: The aim of this paper is description of the process of the crystallization of new aluminium bronzes with the complex silicides of the iron.Design/methodology/approach: Additions Cr, W, Mo and Si were introduced to create in the microstructure of the aluminium bronze of the complex silicides of the iron about high mechanical and physical proprieties to the bronze BA1044. The process of formation the microstructure of the bronze with use of the method of the thermal and derivative analysis (TDA) was analysed. The examinations under the microscope and X-ray microanalysis of the surface distribution of elements were conducted.Findings: From carried research results, that in the aluminium bronze BA1044 after addition Si, Cr, Mo and/or W the phase κFe, κNi crystallize as the complex silicides of the iron. Elements such as: Fe and Si dissolve first of all in silicides in the smaller stage in the matrix of the bronze, Mn and Ni they dissolve in matrix and silicides, Cr dissolves in the larger stage in silicides than in the matrix, W and Mo dissolve in silicides however they crystallize as nanocrystals in the metal matrix and create with her composite.Research limitations/implications: Results of investigations of aluminium bronze BA1044 and alloys after adding to him about 1% Si were introduced in the article and suitably: 1.22 % Cr; 0.82 % Mo; 0.020 % W; 0.60 % Cr, 0.17 % Mo and 0.017 % W.Originality/value: The original results of the investigations of the crystallization of the new bronzes (innovative materials and casting technologies) for which the process of arising microstructure the method TDA was not analysed so far were introduced in the article. The article possesses cognitive values not only essential for researcher but and practician-melters.
The influence of wall thickness on the microstructure of bronze BA1055 with the additions of Si, Cr, Mo and/or W
B.P. Pisarek
Archives of Foundry Engineering , 2008,
Abstract: Aluminium bronzes belong to the high-grade constructional materials applied on the put under strongly load pieces of machines, about good sliding, resistant properties on corrosion both in the cast state how and after the thermal processing. It moves to them Cr and Si in the aim of the improvement of their usable proprieties. Additions Mo and/or W were not applied so far in the larger concentration, these elements were introduced to the melts of the copper as the components of modifiers. It was worked out therefore the new kind of bronzes casting including these elements. Make additions to the Cu-Al-Fe-Ni bronze of Si, Cr, Mo and/or W in the rise of these properties makes possible. The investigations of the influence of the wall thickness of the cast on size of crystallites were conducted: the primary phase β and intermetallic phase κ and the width separates of the secondary phase α precipitate at phase boundary. It results from conducted investigations, that in the aluminium bronze BA1055 after simultaneous makes additions Si, Cr, Mo and in the primary phase β it undergoes considerable reducing size. The addition W reduce size of the grain phase β in the thin walls of the cast 3-6 mm, and addition Cr in the range of the thickness of the wall of the cast 3-6 mm it favors to reducing size the phase β, in walls 12-25 mm the growth causes it. The addition Mo does not influence the change of the size of the grain of the β phase significantly. The make addition singly or simultaneously of the Cr, Mo and W to the bronze CuAl10Fe5Ni5Si it influences the decrease of the quantity separates of the phase α on the interface boundary and of width it separates independently from the thickness of the wall of the cast. The simultaneous make addition of the Si, Cr, Mo and W it enlarges the surface of the phase κFe, κMo. The make addition to the bronze CuAl10Fe5Ni5Si of the Cr, Mo or W the quantity of crystallizing hard phase κ enlarges and the hardness HB of the bronze raises. The make addition singly the Mo or W, if also simultaneous with the addition Cr reduces their make addition it sensibility on the change of the thickness of the wall of the cast (3-25 mm) guaranteeing the possibly small fall the hardness the bronze about 22-28 HB. More far works over new multicomponent aluminium bronzes will be guided in the direction of the identification of the changes of mechanical properties of studied bronzes under the influence of the thermal processing.
A Study of Schottky Barrier Height Inhomogeneity on In/P-Silicon
B.P. Modi
Journal of Nano- and Electronic Physics , 2011,
Abstract: The current-voltage characteristics of In/p-Si Schottky diode measured over a temperature range of 120-360 K have been interpreted on the basis of thermionic emission across an inhomogenous Schottky contact. The experiment shows that the apparent barrier height Φbe increases and ideality factor decreases from 0.26 eV and 6.36 at 120 K to 0.70 eV and 1.91 at 360 K respectively. The variation of effective Schottky barrier height and ideality factor with temperature has been explained considering lateral inhomogeneties at the metal-semiconductor interface. We have also discussed whether or not the junction current has been connected themionic field emission (TFE) mechanisms.
Entropy and Irreversibility in Classical and Quantum Mechanics  [PDF]
V.A. Antonov, B.P. Kondratyev
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.26061
Abstract: Review of the irreversibility problem in modern physics with new researches is given. Some characteristics of the Markov chains are specified and the important property of monotonicity of a probability is formulated. Using one thin inequality, the behavior of relative entropy in the classical case is considered. Further we pass to studying of the irreversibility phenomena in quantum problems. By new method is received the Lindblad’s equation and its physical essence is explained. Deep analogy between the classical Markov processes and development described by the Lindblad’s equation is conducted. Using method of comparison of the Lind-blad’s equation with the linear Langevin equation we receive a system of differential equations, which are more general, than the Caldeira-Leggett equation. Here we consider quantum systems without inverse influ-ence on a surrounding background with high temperature. Quantum diffusion of a single particle is consid-ered and possible ways of the permission of the Schrödinger’s cat paradox and the role of an external world for the phenomena with quantum irreversibility are discussed. In spite of previous opinion we conclude that in the equilibrium environment is not necessary to postulate the processes with collapses of wave functions. Besides, we draw attention to the fact that the Heisenberg’s uncertainty relation does not always mean the restriction is usually the product of the average values of commuting variables. At last, some prospects in the problem of quantum irreversibility are discussed.
Evaluation of projections of populations for the aboriginal identity groups in Canada, 1996-2001
Verma, Ravi B.P.
Canadian Studies in Population , 2005,
Abstract: English The population projections for the Aboriginal identity groups (North AmericanIndians, Metis and Inuit) by age and sex from 1996 to 2001 were developed atthe Canada level, using the cohort-component method. The purpose of this paperis to compare and analyze the error of closure between the projected 2001 andadjusted 2001 population counts due to net census undercounts. It is observedthat the error of closure for the 2001 projected Aboriginal population based onthe 1996 adjusted census population seems to be lower by 7% over the 2001Census adjusted Aboriginal population. In contrast, the projected populations forNorth American Indians and Inuit are lower by -0.20% and -2.73%. However,for the Metis the error of closure is extremely high, at -24.84%. Reasons for thehigher error of closure for the Metis such as the effects of intra-generationalethnic mobility will be discussed in the paper. French Les projections de la population furent développées au niveau du Canada selonla méthode des composantes des cohortes pour les groupes d’identité autochtone(Indiens de l’Amérique du Nord, Métis, Inuit) selon l’age et le sexe de 1996 à2001. L’objet de cet article est de comparer et d’analyser l’erreur en fin depériode d au sous-dénombrement net du recensement entre les chiffres projetésde la population de 2001 et les chiffres rajustés de 2001. L’erreur en fin depériode de la population autochtone projetée de 2001 d’après la population duRecensement de 1996 semble être moindre de 7% que la population autochtonerajustée du Recensement de 2001. En revanche, les populations projetées desIndiens de l’Amérique du Nord et des Inuits sont moindres de -0,20% et de -2,73%. Par contre, l’erreur en fin de période est extrêmement élevée pour lesMétis à -24,84%. Les raisons de cette erreur en fin de période plus élevée chezles Métis telles que les effets de la mobilité ethnique intragénérationelle serontdiscuter dans cette article.
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