Nutritional status indicators in Polonoroeste Area: III - clinical nutritional study

This work is part of the clinical nutritional evaluation of the "Health Diagnostic in the Polonoroeste Survey, 1983". With the objective of evaluating the nutritional status of the population in the area of Polonoroeste a Nutritional Inquiry was done in 7 cities of the State of Mato Grosso. The inquiry included a study of alimentary habits, anthropometric studies and a clinical evaluation of the nutritional status of children between 3 and 72 months of age. We examined 585 children selected as proposed by the SANCHES & CARVALHEIRO sampling method modified by MEIRELLES and SANCHES and the clinical-nutritional evaluation was made according to JELLIEFE. Clinical evidence of proteic-energetic malnutrition was registered in 6.6% of the children, anemia in 9.7% and goiter in 2.7%. There was correlation of the anemia with intestinal parasitoses observed in the same sample by another team of the same project.O estudo do exame clínico-nutricional é parte do Inquérito Nutricional, realizado no "Diagnóstico em Saúde do Polonoroeste-MT em 1983". No intuito de reconhecer a situação nutricional da população da região em estudo, o grupo do Inquérito Nutricional procedeu ao estudo do Consumo Alimentar das famílias, ao estudo dos dados antropométricos e de sinais clínico-nutricionais de crianças na faixa etária de 3 a 72 meses. Foram examinadas 585 crianças da amostra como proposta por SANCHES & CARVALHEIRO7 adaptado por MEIRELLES e SANCHES. O exame clínico-nutricional foi realizado segundo a metodologia recomendada por JELLIFFE4. Foram encontrados sinais clínicos sugestivos de carência nutricional em 6,6% das crianças; sinais de anemia em 9,7% e de bócio em 2,7%. Não foi possível definir com precisão outros quadros carenciais

Carrier Dynamics In Stacked Inpgaas Quantum Dots

We investigated two stacked layers of InPGaAs type-II quantum dots by transmission electron microscopy and optical spectroscopy. The results reveal that InP quantum dots formed in two quantum dot layers are more uniform than those from a single layer structure. The thermal activation energies as well as the photoluminescence decays are rather independent of the separation between quantum dot layers and the presence of the second layer. The quantum dot optical emission persists for thermal activation energy larger than the calculated exciton binding energy. The photoluminescence decay is relatively fast for type-II alignment. © 2007 American Institute of Physics.9112Goldstein, L., Glas, F., Marzin, M.J.Y., Charasse, N., Le Roux, G., (1985) Appl. Phys. Lett., 47, p. 1099Xie, Q., Madhkar, A., Chen, P., Kobayashi, N., (1995) Phys. Rev. Lett., 75, p. 2542Ledentsov, N.N., Shchukin, V.A., Grundmann, M., Kirstaedter, N., Böhmer, J., Schmidt, O., Bimberg, D., Heydenreich, J., (1996) Phys. Rev. B, 54, p. 8743Solomon, G.S., Trezza, J.A., Marchall, A.F., Harris Jr., J.S., (1996) Phys. Rev. Lett., 76, p. 952Sugiyama, Y., Nakata, Y., Futatsugi, T., Sugawara, M., Awano, Y., Yokoyama, N., (1996) Jpn. J. Appl. Phys., Part 2, 36, p. 158Schmidt, O.G., Kienzie, O., Hao, Y., Eberl, K., (1999) Appl. Phys. Lett., 74, p. 1272Chang, W.-H., Chen, W.-Y., Chou, A.-T., Hsu, T.-M., Chen, P.-S., Pei, Z., Lai, L.-S., (2003) J. Appl. Phys., 93, p. 4999Susuki, K., Hogg, R.A., Arakawa, Y., (1999) J. Appl. Phys., 85, p. 8349Sun, C.-K., Wang, G., Bowers, J.E., Brar, B., Blank, H.-R., Kroemer, H., Pilkuhn, M.H., (1996) Appl. Phys. Lett., 68, p. 1543Hatami, F., Grundmann, M., Ledentsov, N.N., Heinrichsdorff, F., Heitz, R., Böhrer, J., Bimberg, D., Alferov Zh., I., (1998) Phys. Rev. B, 57, p. 4635De Godoy, M.P.F., Gomes, P.F., Nakaema, M.K.K., Iikawa, F., Brasil, M.J.S.P., Caetano, R.A., Madureira, J.R., Bittencourt, A.C.R., (2006) Phys. Rev. B, 73, p. 033309Wang, B., Chua, S.-J., (2001) Appl. Phys. Lett., 78, p. 628Nakaema, M.K.K., Iikawa, F., Brasil, M.J.S.P., Ribeiro, E., Medeiros-Ribeiro, G., Carvalho Jr., W., Maialle, M.Z., Degani, M.H., (2002) Appl. Phys. Lett., 81, p. 2743Zundel, M.K., Specht, P., Eberl, K., Jin-Phillipp, N.Y., Phillipp, F., (1997) Appl. Phys. Lett., 71, p. 2972Sanguinetti, S., Henini, M., Grassi Alessi, M., Capizzi, M., Frigeri, P., Franchi, S., (1999) Phys. Rev. B, 60, p. 827

Study of Tau-pair Production in Photon-Photon Collisions at LEP and Limits on the Anomalous Electromagnetic Moments of the Tau Lepton

Tau-pair production in the process e+e- -> e+e-tau+tau- was studied using data collected by the DELPHI experiment at LEP2 during the years 1997 - 2000. The corresponding integrated luminosity is 650 pb^{-1}. The values of the cross-section obtained are found to be in agreement with QED predictions. Limits on the anomalous magnetic and electric dipole moments of the tau lepton are deduced.Comment: 20 pages, 9 figures, Accepted by Eur. Phys. J.

Evidence for an Excess of Soft Photons in Hadronic Decays of Z^0

Soft photons inside hadronic jets converted in front of the DELPHI main tracker (TPC) in events of qqbar disintegrations of the Z^0 were studied in the kinematic range 0.2 < E_gamma < 1 GeV and transverse momentum with respect to the closest jet direction p_T < 80 MeV/c. A clear excess of photons in the experimental data as compared to the Monte Carlo predictions is observed. This excess (uncorrected for the photon detection efficiency) is (1.17 +/- 0.06 +/- 0.27) x 10^{-3} gamma/jet in the specified kinematic region, while the expected level of the inner hadronic bremsstrahlung (which is not included in the Monte Carlo) is (0.340 +/- 0.001 +/- 0.038) x 10^{-3} gamma/jet. The ratio of the excess to the predicted bremsstrahlung rate is then (3.4 +/- 0.2 +/- 0.8), which is similar in strength to the anomalous soft photon signal observed in fixed target experiments with hadronic beams.Comment: 37 pages, 9 figures, Accepted by Eur. Phys. J.

Study of Inclusive J/psi Production in Two-Photon Collisions at LEP II with the DELPHI Detector

Inclusive J/psi production in photon-photon collisions has been observed at LEP II beam energies. A clear signal from the reaction gamma gamma -> J/psi+X is seen. The number of observed N(J/psi -> mu+mu-) events is 36 +/- 7 for an integrated luminosity of 617 pb^{-1}, yielding a cross-section of sigma(J/psi+X) = 45 +/- 9 (stat) +/- 17 (syst) pb. Based on a study of the event shapes of different types of gamma gamma processes in the PYTHIA program, we conclude that (74 +/- 22)% of the observed J/psi events are due to `resolved' photons, the dominant contribution of which is most probably due to the gluon content of the photon.Comment: 13 pages, 8 figures, Accepted by Phys. Lett.

CP asymmetry in B→ϕKSB \to \phi K_S in a general two-Higgs-doublet model with fourth-generation quarks

We discuss the time-dependent CP asymmetry of decay $B \to \phi K_S$ in an extension of the Standard Model with both two Higgs doublets and additional fourth-generation quarks. We show that although the Standard Model with two-Higgs-doublet and the Standard model with fourth generation quarks alone are not likely to largely change the effective $\sin 2 \beta$ from the decay of $B \to \phi K_S$, the model with both additional Higgs doublet and fourth-generation quarks can easily account for the possible large negative value of $\sin 2 \beta$ without conflicting with other experimental constraints. In this model, additional large CP violating effects may arise from the flavor changing Yukawa interactions between neutral Higgs bosons and the heavy fourth generation down type quark, which can modify the QCD penguin contributions. With the constraints obtained from $b \to s \bar{s} s$ processes such as $B \to X_s \gamma$ and $\Delta m_{B_s^0}$, this model can lead to the effective $\sin 2 \beta$ to be as large as $- 0.4$ in the CP asymmetry of $B \to \phi K_S$.Comment: 13 pages, 5 figures, references added, to appear in Eur.Phys.J.

Energy dependence of Cronin momentum in saturation model for p+Ap+A and A+AA+A collisions

We calculate $\sqrt{s}$ dependence of Cronin momentum for $p+A$ and $A+A$ collisions in saturation model. We show that this dependence is consistent with expectation from formula which was obtained using simple dimentional consideration. This can be used to test validity of saturation model (and distinguish among its variants) and measure $x$ dependence of saturation momentum from experimental data.Comment: LaTeX2e, 12 pages, 8 figure

A Precise Measurement of the Tau Lifetime

The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI detector at LEP in the years 1991-1995. Three different methods have been exploited, using both one-prong and three-prong tau decay channels. Two measurements have been made using events in which both taus decay to a single charged particle. Combining these measurements gave tau_tau (1 prong) = 291.8 +/- 2.3 (stat) +/- 1.5 (sys) fs. A third measurement using taus which decayed to three charged particles yielded tau_tau (3 prong) = 288.6 +/- 2.4 (stat) +/- 1.3 (sys) fs. These were combined with previous DELPHI results to measure the tau lifetime, using the full LEP1 data sample, to be tau_tau = 290.9 +/- 1.4 (stat) +/- 1.0 (sys) fs.Comment: 27 pages, 7 figure

Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment

This paper describes an analysis of the angular distribution of W->enu and W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and the missing transverse energy, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw > 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017 +/- 0.030, where the first uncertainties are statistical, and the second include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables, revised author list, matches European Journal of Physics C versio

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.530+/-0.005 (stat.)+/-0.009 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.Comment: 5 pages plus author list (18 pages total), 2 figures, 1 table, corrected author list, matches final version in Physical Review Letter