Laporan Lingam Bocor: JPM buat aduan polis

Jabatan Perdana Menteri (JPM) hari ini membuat laporan polis ekoran tindakan beberapa organisasi media menyiarkan isi kandungan laporan Suruhanjaya Siasatan Diraja berhubung klip video V.K.Lingam sebelum kabinet membuat keputusan untuk mendedahkan laporan itu

Induced mutagenesis in Chickpea (Cicer arietinum (L.) with special reference to the frequency and spectrum of chlorophyll mutations

A relative study of frequency and spectrum of chlorophyll mutations induced by mutagens in M2 generation was made with chickpea (Cicer arietinum (L). Variety ‘CO-4’. The treatments include different doses/concentrations of Gamma rays (20, 30, 40, 50 and 60kR) and Ethyl Methane Sulphonate (10, 20, 30, 40 and 50 mM). From the study, the overall frequencies and spectrum of five types of induced chlorophyll mutants Viridis (0.55), Xantha (0.46), Chlorina (0.45), Albina (0.43) and Tigrina (0.35) were observed. The frequency of chlorophyll mutation was increased with increasing concentrations up to a level, beyond it declined in both the mutagens. And the chlorophyll frequency was found in the order of viridis > xantha >chlorina> Albina >tigrina. The chemical mutagen, EMS was found to be more effective in inducing chlorophyll mutations than gamma rays in Chick pea

Mixed convective flow of immiscible fluids in a vertical corrugated channel with traveling thermal waves

AbstractFully developed laminar mixed convection in a corrugated vertical channel filled with two immiscible viscous fluids has been investigated. By using a perturbation technique, the coupled nonlinear equations governing the flow and heat transfer are solved. The fluids are assumed to have different viscosities and thermal conductivities. Separate solutions are matched at the interface using suitable matching conditions. The velocity, the temperature, the Nusselt number and the shear stress are analyzed for variations of the governing parameters such as Grashof number, viscosity ratio, width ratio, conductivity ratio, frequency parameter, traveling thermal temperature and are shown graphically. It is found that the Grashof number, viscosity ratio, width ratio and conductivity ratio enhance the velocity parallel to the flow direction and reduce the velocity perpendicular to the flow direction

Induced mutagenesis in Cicer arietinum by the application of EMS and Gamma rays with special reference to the cytological studies

The present study was conducted to analyze the chemical and physical mutagenesis on Cicer arietinum with special reference to cytological studies. In this regard, CO – 4 variety of chick pea was subjected to different concentration of gamma rays (20, 30, 40, 50 and 60kR) and EMS (10, 20, 30, 40 and 50mM) for inducing mutation. The M1 plants exposed to mutagen produces a clear cut difference from the untreated control. The root mitotic studies reveal a wide range of chromosomal aberrations such as stickiness, laggards, bridges and some other precocious movement. The percentage of abnormal cell increased with dosage in both mutagens; and 50mM EMS showed more chromosomal aberrations when compared to gamma rays

Dispersion of a Solute in Hartmann Two-Fluid Flow between Two Parallel Plates

The paper presents an analytical solution for the dispersion of a solute in a conducting immiscible fluid flowing between two parallel plates in the presence of a transverse magnetic field. The fluids in both the regions are incompressible, electrically conducting and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions for each fluid are obtained and these solutions are matched at the interface using suitable matching conditions. The results are tabulated for various values of viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric flow rate in the absence and in the presence of chemical reactions. It is found that the solute is dispersed relative to a plane moving with the mean speed of flow with an effective Taylor diffusion coefficient which decreases with an increase in magnetic field with or without chemical reactions. The validity of the results obtained for conducting two fluid model is verified by comparison with the available one-fluid model and the values tally very well

MHD flow in a vertical channel under the effect of temperature dependent physical parameters

Mixed convective flow in a vertical channel filled with electrically conducting viscous fluid with isothermal wall conditions is investigated for variable properties. The combined effects of temperature dependent viscosity and temperature dependent thermal conductivity are analyzed. The solutions are obtained both analytically by perturbation method and numerically by Runge–Kutta method with shooting technique. The dimensionless governing parameters affecting velocity and temperature fields are variable viscosity parameter (−0.5 ≤ bν ≤ 0.5), variable thermal conductivity parameter (−0.5 ≤ bk ≤ 0.5), Hartmann number (1 ≤ M ≤ 3), applied electric field parameter (E0 = ±1, 0), wall temperature ratio parameter (−2 ≤ m ≤ 2) and buoyancy parameter (0 < N ≤ 1.5). For some limiting cases, the obtained results are validated by comparing with those available from the existing literature. Correlations for skin friction and Nusselt number in terms of governing parameters are developed

Inisiatif, pakej transformasi positif: Ramuan tepat, selari dengan ekonomi global semasa

KUALA LUMPUR 14 Jun - Pakar ekonomi menyifatkan sembilan inisiatif Program Transformasi Ekonomi (ETP) yang diumumkan Perdana Menteri, Datuk Seri Najib Tun Razak semalam, satu pakej transformasi ekonomi yang baik

Unsteady Oscillatory Flow and Heat Transfer in a Horizontal Composite Porous Medium Channel

The problem of unsteady oscillatory flow and heat transfer in a horizontal&nbsp;composite porous medium is performed. The flow is modeled using the Darcy-Brinkman&nbsp;equation. The viscous and Darcian dissipation terms are also included in the energy&nbsp;equation. The partial differential equations governing the flow and heat transfer are&nbsp;solved analytically using two-term harmonic and non-harmonic functions in both regions&nbsp;of the channel. Effect of the physical parameters such as the porous medium parameter,&nbsp;ratio of viscosity, oscillation amplitude, conductivity ratio, Prandtl number and the Eckert&nbsp;number on the velocity and/or temperature fields are shown graphically. It is observed&nbsp;that both the velocity and temperature fields in the channel decrease as either of the porous&nbsp;medium parameter or the viscosity ratio increases while they increase with increases in&nbsp;the oscillation amplitude. Also, increasing the thermal conductivity ratio is found to&nbsp;suppress the temperature in both regions of the channel. The effects of the Prandtl and&nbsp;Eckert numbers are found to decrease the thermal state in the channel as well

Double diffusion in a rectangular duct using metals or oxides suspended in a viscous fluid

In this study, double diffusive free convection of nanofluid within a confined rectangular duct is investigated numerically. The momentum and energy equations are placed in the form of difference equations and solved numerically. The left wall conditions for the concentration and temperature are lesser than those of the right wall and the upper and lower walls are insulated. Different nanofluids are considered such as mixtures with copper, diamond, silicon oxide and titanium oxide, suspended in water. Brinkman and Maxwell models are used to characterize the nanofluid. Tiwari and Das model is opted to define the nanofluid behavior. The simulations are conducted using different nanoparticles, thermal Grashof number 1 ≤ GrT ≤ 20, solute Grashof number 1 ≤ GrC ≤ 15, solid volume fraction 0 ≤ Φ ≤ 0.05, Dufour number 0 ≤ Df ≤ 1, Brinkman number 0 ≤ Br ≤ 2, and Soret number 0 ≤ Sr ≤ 5. Additionally, behavior of volumetric flow strength, skin friction, heat transport intensity and Sherwood number is also examined. The thermal Grashof number, Brinkman number, Dufour, Soret and Schmidt parameters accelerate the velocity and temperature and dwindle the concentration whereas the reversal effect was obtained for the solid volume fraction. The concentration Grashof number diminishes the velocity and temperature and intensifies the concentration. The silver nanoparticles produce the highest velocity whereas diamond nanoparticles cause the lowest velocity and temperature. The maximum temperature is attained with silicon oxide

Heat transfer of chemically reacting mixed convection fluid using convective surface condition: Non-Darcy model

This work reports the study of mixed convection of permeable fluid with Robin conditions in the vertical channel including the effects of chemical reactions. The fluid transport is designed by the Darcy-Forchheimer-Brinkman model. The series method is adopted for approximate solutions for governing equations considering the Brinkman number as the perturbation characteristic whose outcomes correspond to magnitudes of Brinkman number less than one. Adopting a numerical scheme followed by fourth order Runge–Kutta algorithm with shooting method, the solutions for bigger magnitudes of the Brinkman number are obtained. The present results for limiting cases are compared with the literature and good agreement is seen. For various values of thermal and mass Grashof numbers, porous parameter, inertial parameter, Darcy number and first order chemical reaction the problem is resolved for the same and distant Biot numbers reflecting the border temperatures symmetric and asymmetric. Finally, the outcomes are tabulated for wall friction parameters, Nusselt and Sherwood numbers for innovated parameters. It is noticed that enhancing buoyancy and dissipations, thermal Grashof number helps to improve the flow rate for all values of Biot number. The Schmidt and Soret parameters can improve concentration patterns. Nusselt number can be improved with thermal Grashof number and Brinkman number and it is dropped with inertia and porous parameters. The solutions have a very good agreement with Zanchini data without mass Grashof number