this research evaluates the efficiency of nanosized zno in the catalytic ozonation of 4-chloro-2-nitrophenol and determines the effect of ph on heterogeneous catalytic ozonation. the combined use of ozone and zno catalyst leads to conversion of 98% 4-chloro-2-nitrophenol during 5 min. in addition, it was found that in zno catalytic ozonation, the degradation efficiency of 4-chloro-2-nitrophenol...

a new type of magnetically-recoverable catalyst was synthesized by the immobilization of h3pw12o40 on the surface of silica-encapsulated -fe2o3 nanoparticles. a series of novel 1,3,5-triaryl pyrazoline derivatives has been synthesized by the reaction of chalcone and phenylhydrazine in the presence of the -fe2o3@sio2-pw12nanoparticles,  in high yields. the structures of compounds obtained were...

what is called the problems of tehran metropolis now a days, is deep- rooted in the policies ofurban planning in our country. since not far past up to now, immigration from all over the country to tehran, irregular growth of urban population, inconsistency with urban infrastructure development, environmental pollution and low quality of living areas, erosion of self -growing fabric in most area...

background: the purpose of this study is to fabricate inexpensive in-house low cost homogeneous and heterogeneous human equivalent thorax phantom and assess the dose accuracy of the treatment planning systems (tps) calculated values for different lung treatment dosimetery. it is compared with thermoluminescent dosimeter (tld) measurement. materials and methods: homogeneous and heterogeneous tho...

â â â  â â â â â â  â  abstract â  based on the recent literature of heterogeneous firms, productive firms self select themselves into foreign markets. in this framework, there is a productivity rise prior to exporting. on the other words, different export performance across firms is linked to their heterogeneity. â  the main purpose of the present paper is to examine the so-called hypothesis o...

In this article, we introduce a generalization of graphlets to heterogeneous networks called typed . Informally, are small induced subgraphs. Typed generalize rich as they explicitly capture the higher-order connectivity patterns in such networks. To address problem, describe general framework for counting occurrences graphlets. The proposed algorithms leverage number combinatorial relationship...

in this paper, the mechanical behavior of three-phase inhomogeneous materials is modeled using the meso-scale model with lattice beams for static and dynamic analyses. the timoshenko beam theory is applied instead of the classical euler-bernoulli beam theory and the mechanical properties of lattice beam connection are derived based on the continuum medium using the non-local continuum theory. t...

Splicing regulatory proteins often have distinct activities when bound to exons versus introns. However, less clear is whether variables aside from location can influence activity. HnRNP L binds to a motif present in both CD45 variable exons 4 and 5 to affect their coordinate repression. Here, we show that, in contrast to its direct repression of exon 4, hnRNP L represses exon 5 by countering t...