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DDT and HCH Residues in Basmati Rice (Oryza sativa) Cultivated in Dehradun (India)
Organochlorine pesticides were used earlier for agricultureproduction. Their residues may still be present in soil and mayaccumulate in food crops, posing potential health problems to consumers. DDT,Expand
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HCN: A plausible source of purines, pyrimidines and amino acids on the primitive earth
SummaryDilute (0.1M) solutions of HCN condense to oligomers at pH 9.2. Hydrolysis of these oligomers yields 4,5-dihydroxypyrimidine, orotic acid, 5-hydroxyuracil, adenine,Expand
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Health Hazard from Dry River Bed Agriculture
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1 H, 13C and 15N nuclear magnetic resonance analysis and chemical features of the two main radical oxidation products of 2′-deoxyguanosine: oxazolone and imidazolone nucleosides
The two primary one-electron oxidation and ˙OH-mediated decomposition products of 2′-deoxyguanosine 1 are 2,2-diamino-4-[(2-deoxy-β-D-erythro-pentofuranosyl)amino]-2,5-dihydrooxazol-5-one 3 (dZ) andExpand
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Effect of lindane on the growth and metabolic activities of cyanobacteria.
The effect of lindane was studied in Cyanobacteria (Anabaena) by estimating its growth pattern, biomass yield, chlorophyll content, and total starch and protein content. The results reveal thatExpand
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Solvent Free Synthesis of Chalcones and their Antibacterial Activities
The solvent free synthesis of six chalcones was carried out by grinding the piperanal and the acetophenone (unsubstituted, 4-methyl, 4-methoxy, 4-bromo, 4-nitro, 3-chloro) in the presence of solidExpand
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Studies in the Mineral and Salt-Catalyzed Formation of RNA Oligomers
Activated mononucleotides oligomerize in the presence of montmorillonite clay to form RNA oligomers. In the present study, effects of salts, temperature and pH on the clay-catalyzed synthesis of RNAExpand
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Mechanism of montmorillonite catalysis in the formation of RNA oligomers.
The montmorillonite clay-catalyzed reactions of nucleotides generate oligomers as long as 50-mers. The extent of catalysis depends on the magnitude of the negative charge on the montmorilloniteExpand
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Homochiral selection in the montmorillonite-catalyzed and uncatalyzed Prebiotic synthesis of RNA
The reaction of D,L-5′-activated nucleotide of adenosine in the presence and absence of montmorillonite gave 60∶40 and 96∶4 ratios, respectively of the D,D- and L,L∶D,L- and L,D-dimers.
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