ficus benjamina commonly known as the weeping fig or benjamin's fig, is a species of moraceae, native to south and southeast asia and australia. it is a topiary tree reaching 15 metres in height in natural conditions. ficus benjamina is planted as a potted plant and as an ornamental shrub in gardens in mazandaran and elsewhere in the country. stem and crown gall symptoms were observed on f...

The DNA sequence of the region located downstream from the kanamycin resistance gene of Tn5_ up to the right inverted repeat TS50R has been determined. This completes the determination of the sequence of Tn5 which is 5818 bp long. The 2.7 Kb central region contains three resistance genes : the kanamycin-neomycin resistance gene, a gene coding for resistance to CT.990 an antimitotic-antibiotic c...

The specificity of deletion formation was studied using tests involving reversion of palindromic insertion mutations. Insertions of a TnS-related transposon at 13 sites in the ampicillin-resistance (amp) gene of plasmid pBR322 were shortened to a nested set of perfect palindromes, 22, 32 and 90 bp long. We monitored frequencies of reversion to Amp', which is the result of deletion of the palind...

Evaluation of the geomechanical properties of shales, especially weak ones is always problematic. The Missouri Department of Transportation (MODOT) recently undertook a major research initiative to achieve significant and recurring cost savings for MODOT by developing improved, technically sound design specifications. Test drilling in shale was conducted; Boreholes were typically drilled in pai...