visceral leishmaniasis (vl) remains an important public health problem in china. it is essential to elucidate the current epidemiological characteristics of vl for designing control policy.the data were obtained from china disease prevention and control information system from 2004 to 2012. characteristics by major variables, such as age, gender, season and geography were analyzed using spss13....

We obtain an inequality on a measure of the spread in time of periodic functions that are concentrated in frequency, i.e. all but a fixed finite number of Fourier coefficients vanish with meansquared error up to . We characterize an extremal function and give an asymptotic formula for the measure of spread of this extremal function as approaches 0. We also consider the corresponding problem for...

Abstract The production of synthetic fuels and chemicals from solar energy abundant reagents offers a promising pathway to sustainable fuel economy chemical industry. For the hydrogen, photoelectrochemical or integrated photovoltaic electrolysis devices have demonstrated outstanding performance at lab scale, but there remains lack larger-scale on-sun demonstrations (>100 W). Here we present ...

regarding many disadvantages of traditional method to produce concentrated yoghurt, several attempts have been done for mechanization of process in industrial scale. using membrane systems especially ultra filtration is one of these methods. in this survey, method to produce direct concentrated yoghurt, fresh milk was concentrated to 19% snf by ultra filtration method then diluted to 13 and 16 ...