Shelter is one of the basic needs human beings. Masonry structures have met this need since ancient times. an important place among building types. It also under construction in many rural areas. Since protecting historical our most duties, we to know repair and strengthening methods such masonry structures, be able apply best that structure. Metal fasteners (clamp tenon) are used reinforcement...

The relationship between the activity and community structure of microbes associated with the oxidation of ammonia in a full-scale rockwool biofilter was examined by kinetic, denaturing gradient gel electrophoresis (DGGE), and sequence analyses. The packing materials were sampled from two different depths at 3 sites. Estimated K(m) values were similar among depths at same sampling sites, while ...