1,497 research outputs found
Digital Correlation of First Order Space TIME in a Fluctuating Medium
The study of fluctuating medium has been of great interest through the use of the correlation techniques A laser beam is known to form a coherent beam which can be made to propagate within the fluctuating medium. This will allow the study of the outgoing beam using digital correlation technique. Based on the power spectrum, the integral transformation of the correlation function, one can obtain for instance the radius and mass of the particles executing Brownian motion in the dispersed solution. To correlate the laser beam directly may not allow the detection of signals by electronic means. A method of digitizing the light signals by means of light beat heterodyne technique is therefore adopted. The temporal and special correlation functions can be measure
Quantum Estimates of Alpha Emitter Life TIME
Quantum estimates of several alpha radioactive life time have been made using the probability of quantum tunneling through the nuclear potential barrier. It is assumed that for a given nucleus with mass number A and isotopic number Z, there exists an alpha particle moving freely back and forth in the nucleus with mass and isotopic numbers A -4 and Z-2. If the probability of penetrating the nuclear potential barrier is Τ, then after N times (N=1/Τ) hitting the barrier an alpha particle is emitted. To obtain the elapsed time for emitting an alpha particle requires N times τ0, where τ0 is the time travel for alpha across the nuclear diameter, which is dependent on alpha energy. It is assumed here that this kinetic energy is the same as the emitted energy. The emitting alpha kinetic energies here are calculated by the difference of the masses of the parent and daughter nuclei and the alpha particles. They are in closed agreement with the experimental observations. While the alpha radioactive life time are not the same order of magnitudes but give the same linearity on the logarithmic scale as function of the inverse square root of energy
Fermentation Quality and in Vitro Nutrient Digestibility of Fresh Rice Straw-Based Silage Treated with Lactic Acid Bacteria
The aim of the experiment was to evaluate fermentation characteristics and in vitro nutrient digestibility of fresh rice straw-based silage ensiled with addition of epiphytic lactic acid bacteria (LAB) inoculant. The experiment was arranged in a completely randomized design, with 2 × 2 factorial arrangement of treatments. The first factor was the ratio of fresh rice straw (FRS), tofu waste (TW) and cassava waste (CW) consisted of two levels i.e., 40 : 20 : 40 and 40 : 25 : 35, on dry matter (DM) basis). The second factor was the level of LAB inoculant with two levels ie., 0 and 20 mL/kg FM. The treatments were (A) FRS + TW + CW with the ratio of 40 : 20 : 40, without LAB inoculant; (B) FRS + TW + CW with the ratio of 40 : 20 : 40 + LAB inoculant; (C) FRS + TW + CW with the ratio of 40 : 25 : 35, without LAB inoculant; (D) FRS + TW + CW with ratio of 40 : 25 : 35 + LAB inoculant. Results showed that addition of LAB inoculant in silage increased lactic acid concentration (P0.05) on chemical composition, fermentation quality of silage and in vitro digestibility. It was concluded that mixture silage with ratio of 40 : 20 : 40 with the addition of LAB inoculant had the best fermentation quality and nutrient digestibility than other silages
SUSY Phases, the Electron Electric Dipole Moment and the Muon Magnetic Moment
The electron electric dipole moment (d_e) and the muon magnetic moment
anomaly (a_{\mu}) recently observed at BNL are analyzed within the framework of
SUGRA models with CP violating phases at the GUT scale. It is seen analytically
that even if d_e were zero, there can be a large Bino mass phase (ranging from
0 to 2 \pi) with a corresponding large B soft breaking mass phase (of size ~<
0.5 with sign fixed by the experimental sign of a_{\mu}). The dependence of the
B phase on the other SUSY parameters, gaugino mass m_{1/2}, \tan \beta, A_0, is
examined. The lower bound of a_{\mu} determines the upper bound of m_{1/2}. It
is shown analytically how the existence of a non-zero Bino phase reduces this
upper bound (which would correspondingly lower the SUSY mass spectra). The
experimental upper bound on d_e determines the range of allowed phases, and the
question of whether the current bound on d_e requires any fine tuning is
investigated. At the electroweak scale, the phases have to be specified to
within a few percent. At the GUT scale, however, the B phase requires fine
tuning below the 1% level over parts of the parameter space for low m_{1/2},
and if the current experimental bound on d_e were reduced by only a factor of
3-4, fine tuning below 1% would occur at both the electroweak and GUT scale
over large regions of the parameter space. All accelerator constraints (m_h >
114 GeV, b -> s \gamma, etc.) and relic density constraints with all
stau-neutralino co-annihilation processes are included in the analysis.Comment: 22 pages, latex, 14 figure
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