No abstract

No abstract

In the present study, a porous concrete with alkali activated slag (AAS) and coal bottom ash was developed and the effect of carbonation on the physical property, microstructural characteristic, and heavy metal leaching behavior of the porous concrete were investigated. Independent variables, such as the type of the alkali activator and binder, the amount of paste, and CO 2 concentration, were considered. The experimental test results showed that the measured void ratio and compressive strength of the carbonated porous concrete exceeded minimum level stated in ACI 522 for general porous concrete. A new quantitative TG analysis for evaluating CO 2 uptake in AAS was proposed, and the result showed that the CO 2 uptake in AAS paste was approximately twice as high as that in OPC paste. The leached concentrations of heavy metals from carbonated porous concrete were below the relevant environmental criteria.

The collection of birds serves as a repository for research and also as a means of documenting avian diversity and its spread. Evolutionary divergence is the sophisticated explanation of similarities and differences among different species of birds. Lineage represents how these different species have evolved can be study. Phylogenetic analysis is generally used to understand how traits among these bird species have evolved. Phylogeny can help in identifying birds based on both morphological and genetic characteristics. In this article, a total number of birds inhabiting Lake view Park Islamabad have been identified and a phylogenetic tree is constructed based on their COX 1 gene sequence. Sequences of the respective species gene are downloaded from NCBI databases using MEGA-X software. The phylogenetic tree represented birds arranged in five different clades from a single emergence of new species and spread of biodiversity of Class Aves organisms from the single ancestor. origin. Four external nodes and one internal node can be seen which showed the