349 research outputs found

    Pengaruh Substitusi Tepung Kedelai Dan Tepung Ikan Teri Terhadap Kadar Protein Dan Kalsium Crackers

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    The study objective to determine the effect of substitution of soy flourl and flour anchovy in various proportions to protein and calcium crackers and acceptability in children under five. A preliminary study was conducted to determine two of the five most preferred panelists. Substitution is used soy flour and flour anchovy 5%, 10%, 15%, 20%, 25%. Having obtained two composition that produces the most preferred crackers followed by the main research to acceptability of children under five and analysis of protein and calcium. The difference in the preference panelists on crackers analyzed by Friedman test. Effect of soy flour and flour anchovy substitution on protein and calcium crackers used ANOVA. Differences acceptance crackers in toodler was analyzed with chi square test. The results showed crackers substitution soy flour and flour anchovy 5% and 10% favored panelists and toddlers. The energy of crackers substitution 5% is 421.97 Calories and substitution 10% was 429.59 Calories. The protein of crackers substitution 5% is 10.97 grams and the substitution of 10% is 17.1 grams. The calcium of crackers substitution 5% is 25,07mg and substitution of 10% was 37.6 mg. Substitution of flour soy and flour anchovy 5% and 10% increase protein and Calcium crackers. Making crackres should be substituted soy flour and flour anchovy 10%

    Constraints on new interactions from neutron scattering experiments

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    Constraints for the constants of hypothetical Yukawa-type corrections to the Newtonian gravitational potential are obtained from analysis of neutron scattering experiments. Restrictions are obtained for the interaction range between 10^{-12} and 10^{-7} cm, where Casimir force experiments and atomic force microscopy are not sensitive. Experimental limits are obtained also for non-electromagnetic inverse power law neutron-nucleus potential. Some possibilities are discussed to strengthen these constraints.Comment: 18 pages, 3 figure

    Incorporating outlier detection and replacement into a non-parametric framework for movement and distortion correction of diffusion MR images

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    Despite its great potential in studying brain anatomy and structure, diffusion magnetic resonance imaging (dMRI) is marred by artefacts more than any other commonly used MRI technique. In this paper we present a non-parametric framework for detecting and correcting dMRI outliers (signal loss) caused by subject motion.Signal loss (dropout) affecting a whole slice, or a large connected region of a slice, is frequently observed in diffusion weighted images, leading to a set of unusable measurements. This is caused by bulk (subject or physiological) motion during the diffusion encoding part of the imaging sequence. We suggest a method to detect slices affected by signal loss and replace them by a non-parametric prediction, in order to minimise their impact on subsequent analysis. The outlier detection and replacement, as well as correction of other dMRI distortions (susceptibility-induced distortions, eddy currents (EC) and subject motion) are performed within a single framework, allowing the use of an integrated approach for distortion correction. Highly realistic simulations have been used to evaluate the method with respect to its ability to detect outliers (types 1 and 2 errors), the impact of outliers on retrospective correction of movement and distortion and the impact on estimation of commonly used diffusion tensor metrics, such as fractional anisotropy (FA) and mean diffusivity (MD). Data from a large imaging project studying older adults (the Whitehall Imaging sub-study) was used to demonstrate the utility of the method when applied to datasets with severe subject movement.The results indicate high sensitivity and specificity for detecting outliers and that their deleterious effects on FA and MD can be almost completely corrected

    Quasi-free Compton Scattering from the Deuteron and Nucleon Polarizabilities

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    Cross sections for quasi-free Compton scattering from the deuteron were measured for incident energies of 236--260 MeV at the laboratory angle -135 degrees. The recoil nucleons were detected in a liquid-scintillator array situated at 20 degrees. The measured differential cross sections were used, with the calculations of Levchuk et al., to determine the polarizabilities of the bound nucleons. For the bound proton, the extracted values were consistent with the accepted value for the free proton. Combining our results for the bound neutron with those from Rose et al., we obtain one-sigma constraints of alpha_n = 7.6-14.0 and beta_n = 1.2-7.6.Comment: 4 pages, 3 figures, accepted in PR

    Neutron polarizabilities investigated by quasi-free Compton scattering from the deuteron

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    Measuring Compton scattered photons and recoil neutrons in coincidence, quasi-free Compton scattering by the neutron has been investigated at MAMI (Mainz) at thetaγlab=136otheta^{lab}_\gamma=136^o in an energy range from 200 to 400 MeV. From the data a polarizability difference of αnβn=9.8±3.6(stat)1.1+2.1(syst)±2.2(model)\alpha_n - \beta_n = 9.8 \pm 3.6(stat)^{+2.1}_{-1.1}(syst)\pm 2.2(model) in units of 104fm310^{-4}fm^3 has been determined. In combination with the polarizability sum αn+βn=15.2±0.5\alpha_n+\beta_n= 15.2\pm 0.5 deduced from photo absorption data, the neutron electric and magnetic polarizabilities, αn=12.5±1.8(stat)0.6+1.1(syst)±1.1(model)\alpha_n=12.5\pm 1.8(stat)^{+1.1}_{-0.6}(syst)\pm 1.1(model) and βn=2.71.8(stat)1.1+0.6(syst)1.1(model)\beta_n = 2.7\mp 1.8(stat)^{+0.6}_{-1.1}(syst)\mp 1.1(model), are obtained

    Search for Axionlike and Scalar Particles with the NA64 Experiment

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    We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as shielding, and would be observed either through their a(s)γγa(s)\to\gamma \gamma decay in the rest of the HCAL detector or as events with large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to 2.84×10112.84\times10^{11} electrons on target allowing to set new limits on the a(s)γγa(s)\gamma\gamma-coupling strength for a(s) masses below 55 MeV.Comment: This publication is dedicated to the memory of our colleague Danila Tlisov. 7 pages, 5 figures, revised version accepted for publication in Phys. Rev. Let

    A facility to Search for Hidden Particles (SHiP) at the CERN SPS

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    A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below O{\cal O}(10)~GeV/c2^2, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation.Comment: Technical Proposa

    Search for Axionlike and Scalar Particles with the NA64 Experiment

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    Indexación: Scopus.We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as a shield, and would be observed either through their a(s)→γγ decay in the rest of the HCAL detector, or as events with a large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing of the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to 2.84×1011 electrons on target, allowing us to set new limits on the a(s)γγ-coupling strength for a(s) masses below 55 MeV. © 2020 authors. Published by the American Physical Society. Funded by SCOAP3.https://journals-aps-org.recursosbiblioteca.unab.cl/prl/abstract/10.1103/PhysRevLett.125.08180

    Low-Energy Compton Scattering of Polarized Photons on Polarized Nucleons

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    The general structure of the cross section of γN\gamma N scattering with polarized photon and/or nucleon in initial and/or final state is systematically described and exposed through invariant amplitudes. A low-energy expansion of the cross section up to and including terms of order ω4\omega^4 is given which involves ten structure parameters of the nucleon (dipole, quadrupole, dispersion, and spin polarizabilities). Their physical meaning is discussed in detail. Using fixed-t dispersion relations, predictions for these parameters are obtained and compared with results of chiral perturbation theory. It is emphasized that Compton scattering experiments at large angles can fix the most uncertain of these structure parameters. Predictions for the cross section and double-polarization asymmetries are given and the convergence of the expansion is investigated. The feasibility of the experimental determination of some of the struture parameters is discussed.Comment: 41 pages of text, 9 figures; minor revisions prior to publication in Phys. Rev.
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