Multiple muon measurements with MACRO

The MACRO experiment at Gran Sasso provides means for detailed studies of multiple coincident penetrating cosmic ray muons. In this paper we concentrate on the studies of the ultrahigh energy primary cosmic ray composition using muon bundle multiplicities, muon pair lateral and angular separation distributions.Othe

Tanzania HIV/AIDS and Malaria Indicator Survey 2011-12(Preliminary Results)

Preliminary results (tables only) for the malaria indicators and selected HIV indicators. The results were released by the National Bureau of Statistics on 11 October 2012. Full results of the survey are still being compiled and will be included in the final report

Mesoscopic model for soft flowing systems with tunable viscosity ratio

We propose a mesoscopic model of binary fluid mixtures with tunable viscosity ratio based on the two-range pseudo-potential lattice Boltzmann method, for the simulation of soft flowing systems. In addition to the short range repulsive interaction between species in the classical single-range model, a competing mechanism between the short range attractive and mid-range repulsive interactions is imposed within each species. Besides extending the range of attainable surface tension as compared with the single-range model, the proposed scheme is also shown to achieve a positive disjoining pressure, independently of the viscosity ratio. The latter property is crucial for many microfluidic applications involving a collection of disperse droplets with a different viscosity from the continuum phase. As a preliminary application, the relative effective viscosity of a pressure-driven emulsion in a planar channel is computed.Comment: 14page

A Novel Scheme to Search for Fractional Charge Particles in Low Energy Accelerator Experiments

In the Standard Model of particle physics, the quarks and anti-quarks have fractional charge equal to $\pm1/3$ or $\pm2/3$ of the electron's charge. There has been a large number of experiments searching for fractional charge, isolatable, elementary particles using a variety of methods, including $e^+e^-$ collisions using dE/dx ionization energy loss measurements, but no evidence has been found to confirm existence of free fractional charge particles, which leads to the quark confinement theory. In this paper, a proposal to search for this kind particles is presented, which is based on the conservation law of four-momentum. Thanks to the CLEOc and BESIII detectors' large coverage, good particle identification, precision measurements of tracks' momenta and their large recorded data samples, these features make the scheme feasible in practice. The advantage of the scheme is independent of any theoretical models and sensitive for a small fraction of the quarks transitioning to the unconfinement phase from the confinement phase.Comment: 9 page

Tanzania HIV/AIDS Indicator Survey 2003-04

The Tanzania Commission for AIDS (TACAIDS) authorised the National Bureau of Statistics\ud (NBS) to conduct the THIS. The THIS is the first household survey of its kind to be conducted in Tanzania.\ud The survey covered the Tanzania Mainland only.The main objective of the survey was to provide HIV/AIDS programme managers and policymakerswith information needed to guide planning and implementation of interventions, including resource mobilization and allocation, monitoring and evaluation of existing programmes, and designing new and effective strategies for combating the epidemic.\ud Before this survey, national HIV prevalence estimates depended entirely on data derived from\ud blood donors and pregnant women seeking antenatal care. Although this information from the surveillance system has been useful for monitoring the trends of HIV in Tanzania, the inclusion of HIV testingin the THIS offers the opportunity to better understand the magnitude and pattern of infection in the generalreproductive-age population in Tanzania. The THIS results are in turn expected to improve the calibrationof the annual sentinel surveillance data, so that trends in HIV infection can be more accurately\ud measured in the intervals between household surveys.\ud This report contains findings from the 2003-04 THIS collected from the households visited. The\ud survey was designed to produce regional estimates. The tables and text cover the most important indicatorsrelated to HIV/AIDS and should be of use to policymakers and programme administrators who needup-to-date data for evaluating their activities and planning future directions.\u

Tanzania HIV/AIDS and Malaria Indicator Survey\ud 2007-08\ud

HIV/AIDS, Malaria, Tanzania, anti malaria, Treatmen