1,045 research outputs found

    Heat Generation and Chemical Reaction Effects on MHD Boundary Layer Flow of a Moving Vertical plate with Suction and Dissipation

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    In this paper, the study of the steady two-dimensional flow of an incompressible viscous fluid with heat and mass transfer and MHD heat generation past a moving vertical plate with suction in the presence of viscous dissipation and chemical reaction is investigated. Using similarity variables, the governing partial differential equations are transformed into non-linear ordinary differential equations. These equations are then solved numerically using fourth order Runge-Kutta method with shooting technique. The flow variables are presented graphically. The graphs showed that velocity rises for increasing Grashof number, mass Grashofnumber, Suction, Heat generation and Eckert numberwhile reducing with increasing Magnetic parameter, Schmidt number, and Chemical reaction parameter and Prandtl number. Comparisons with previously published work are performed and are found to be in an excellent agreement

    Phase conjugation by degenerate four wave mixing in disodium fluorescein solution in methanol

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    Organic dyes are known to show the resonant type of nonlinear optical properties, including phase conjugation. In the present work, disodium fluorescein in methanol is used as an organic nonlinear medium for degenerate four wave mixing at 532 nm to see the intensity dependence of the phase conjugate signal at different concentrations of the solution. It is observed that the maximum reflectivity of the signal occurs in a concentration range of 5 x 10(exp -3)/cu cm to 1.2 x 10(exp -2) g/cu cm. It is also observed that the intensity of the signal drops suddenly to less than half of its maximum outside the concentration range mentioned above. An investigation of the phase conjugate signal intensity by changing the delay time between probe signal and the forward pump is also examined. Briefly discussed is the possibility of population grating in dye liquids as a source of enhancing the third order susceptibility besides the other techniques mentioned in reference. The experiment is done by beam splitting the second harmonic (532 nm) of Nd:YAG laser, Q-switched at 20 pulses/sec (pulse width is approximately 8 and 200 mJ per pulse)

    Finite Bending of Blocks

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    The problem of bending of a circular block with concentric hole into ellipsoidal shell is considered, and the earlier results have been obtained as particular cases

    Inheritance of fruit colour in the Solanum nigrum complex

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    In the Solatium nigrum complex there is wide variability in the fruit colour. In 17 accessions representing diploids, tetraploids and hexaploids, dark shining blue, dull blue, bright red, orange red, yellowish-red and translucent green were observed in the different accessions. Blue is inherited as dominant over red and translucent green; however, the results obtained in crosses between blue and translucent green cannot be explained on the basis of this simple relationship and it is tentatively assumed that duplicate*genes are involved in this case. In the tetraploids S. nigrum, S. villosum and S. miniatum the different shades of red seem to be controlled by alleles at the same locus

    Bending of Composite Plates-I

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    The problems of bending of aelotropic incompressible composite circular blocks into elliposidal shell have been studied following the method of Seth, et al. and a particular case has been obtained

    TRIPOLAR FUZZY SOFT IDEALS AND TRIPOLAR FUZZY SOFT INTERIOR IDEALS OVER Γ−SEMIRING

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    In this paper, we have introduced the notion of tripolar fuzzy soft Γ\Gamma -subsemi-ring,tripolar fuzzy soft ideal, tripolar fuzzy soft interior ideals over Γ\Gamma -semiring and also studiedsome of their algebraic properties and the relations between them

    In Vitro Antibacterial Activity of Flower Extract of Leucas Indica

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    İn this study, the antimicrobial activities of methanol extracts of flowers of Leucas indica was investigated by using agar well diffusion method against selected ten bacterial species (Pseudomonas (MTCC 424), Corynebacterium (MTCC 1349), Spingomonas (MTCC 6362), Bacillus subtilis (MTCC 441), Bacillus licheniformis (MTCC 429), Bacillus coagulans (MTCC 5856), Streptococcus (MTCC 9724), Klebsiella pneumonia (MTCC 452), E. coli (MTCC 443), and Staphyloccus (MTCC 3160).  Among the ten bacterial species studied, the flower extract at concentrations of 20µg and 40µg showed antimicrobial activity against Klebsiella pneumonia, E. coli, Streptococcus, Bacillus subtilis, Spingomonas, Staphyloccus and Corynebacterium respectively

    Anharmonicity factors and potential energy constants of B<SUB>2</SUB>H<SUB>6</SUB> and B<SUB>2</SUB>D<SUB>6</SUB>

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    The anharmonicity factors of B2H6 and B2D6 have been calculated using Dennison's method. Using the calculated harmonic wave numbers, the valence force constants have been obtained by the Wilson's F-G matrix method

    Remarks on the k-error linear complexity of p(n)-periodic sequences

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    Recently the first author presented exact formulas for the number of 2ⁿn-periodic binary sequences with given 1-error linear complexity, and an exact formula for the expected 1-error linear complexity and upper and lower bounds for the expected k-error linear complexity, k >2, of a random 2ⁿn-periodic binary sequence. A crucial role for the analysis played the Chan-Games algorithm. We use a more sophisticated generalization of the Chan-Games algorithm by Ding et al. to obtain exact formulas for the counting function and the expected value for the 1-error linear complexity for pⁿn-periodic sequences over Fp, p prime. Additionally we discuss the calculation of lower and upper bounds on the k-error linear complexity of pⁿn-periodic sequences over Fp
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