introduction one of the most vulnerable water resources against contamination is ground water table. these resources are exposed to contamination in various forms. identifying and controlling contamination in these resources are more difficult and costly than surface waters. also because of the persistence of contamination in these resources, the best way to prevent their contamination is to id...

A recombinant plasmid containing the thymidine kinase (TK) gene (pAGO; 6.36 kilobases) was reacted in vitro with (+/-)-7 beta, 8 alpha-dihydroxy-9 alpha, 10 alpha-epoxy-7,8,9,10-tetrahydrobenzo(a)pyrene, an ultimate carcinogenic metabolite of benzo(a)pyrene. The covalent binding of the metabolite to the circular forms of pAGO was visible by a drastic change in their mobility during agarose gel ...

The paper proposes the modified-SIFT algorithm which will be a modified form of the scale invariant feature transform. The modification consists of considering successive groups of 8 rows of pixel, along the height of the image. These are used to construct 8 bin histograms for magnitude as well as orientation individually. As a result the number of feature descriptors is significantly less (95%...

Treatment of carboxypeptidase Y with ~4C-iodoacetamide caused a drastic reduction in the peptidase activity towards FA-Phe-$Leu-OH while the esterase activity towards FA-Phe 89 the amidase activity towards FA-PhelNH2 and the peptidyl amino acid amide hydrolase activity towards FA-Phe-$GIy-NH2 were much less affected. The loss of peptidase activity could be correlated with the incorporation of a...

Chemical modification of aminopeptidase from pronase has revealed two important histidines in enzyme catalysis. In the absence of metal ions, modification of the readily-modified histidine (pKa 6.9 +/- 0.5) results in a drastic loss of activity, indicating that this residue is indispensible for enzyme activity. In the presence of CaCl2, the modified enzyme still retains approx. 60% of the activ...

Long-run technological progress is cyclical because drastic innovations that introduce new technological opportunity are only profitable at times when repeated incremental innovation has nearly exhausted existing technological opportunity and driven entrepreneurial profit and income growth towards zero. The article presents a ’technological opportunity model’ where endogenous drastic and increm...

Interstellar dust (ISD) penetrates into the heliosphere due to relative motion of Sun and local interstellar medium (LISM). Inside at boundaries, where solar wind interacts with LISM, distribution ISD is modified action electromagnetic forces, gravitation radiation pressure. These forces make particles in inhomogeneous. In previous work we demonstrated existence singularities density 0.03–10 AU...

Groundwater protection against anthropogenic sources, including the exploitation and use of groundwater release wastes into soil environment, changes in land cover, process recharge is paramount importance for protecting human health by securing clean drinking water production. The identification a contamination risk zone has been found to be necessary useful approach managing this valuable res...

In this study, electrical resistivity was applied in six 400 m profiles around the Hulene-B waste dump (Mozambique). Afterwards, an inversion performed by RES2Dinv. The use of method allowed us to characterize detail some underlying aspects DRASTIC index identifying anomalous zones considered be permeable and prone leachate migration. modified revealed high values areas near contaminated surfac...