The interaction between salmon testes DNA (st-DNA) and a series of Cu(II) polypyridyl complexes, i.e. [Cu(dmbpy)(NO3)2] (1) (dmbpy = 4,4'-dimethyl-2,2'-bipyridine), [Cu(bpy)(NO3)2] (2) (bpy = 2,2'-bipyridine), [Cu(phen)(NO3)2] (3) (phen = phenanthroline), [Cu(terpy)(NO3)2]·H2O (4) (terpy = 2,2':6',2″-terpyridine), [Cu(dpq)(NO3)2] (5) (dpq = dipyrido-[3,2-d:2',3'-f]-quinoxaline) and [Cu(dppz)(NO...

microbial phytases were applied mainly to animal and human foodstuffs in order to improvemineral bioavailability and food processing. in addition, phytases have potentialbiotechnological application in various other fields, such as environmental protection,aquaculture and agriculture. bacillus sp. dm12, an isolate from a hot spring, produces phytase,which catalyzes the hydrolysis of phytic acid...

Solar emission produces copious nitrosonium ions (NO(+)) in the D layer of the ionosphere, 60 to 90 km above the Earth's surface. NO(+) is believed to transfer its charge to water clusters in that region, leading to the formation of gaseous nitrous acid (HONO) and protonated water cluster. The dynamics of this reaction at the ionospheric temperature (200-220 K) and the associated mechanistic de...

Lead acetate treatment of unfixed cells immobilizes the intracellular water-soluble, inorganic orthophosphate ions as microcrystalline lead hydroxyapatite precipitates (see reference 1). These precipitates have been analyzed with the electron microprobe. A much higher concentration of phosphorus has been found in the nucleoli of maize root tip cells fixed in lead acetate-glutaraldehyde (organic...

The structure of uranopilite, [(UO2)6(SO4)O2(OH)6(H2O)6](H2O)8, space group P1̄, a 8.896(2), b 14.029(3), c 14.339(3) Å, 96.610(4), 98.472(4), 99.802(4)°, V 1726.1(4) Å3, Z = 2, has been solved and refined on the basis of F2 for all unique data collected with monochromatic MoK X-radiation and a CCD-based detector to an agreement factor (R1) of 7.0%, calculated using 3907 unique observed reflecti...

Hydrothermal reaction of a tripodal bridging ligand, 5-(4-carboxyphenoxy)isophthalic acid (H3cpia) with cobalt salts modulated by N-donor neutral ligands leads to the formation of six novel coordination networks formulated as {[Co(1.5)(cpia)(o-bix)](H2O)(1.5)}n (1), {[Co2(cpia)(μ-OH)(m-bix)]H2O}n (2), {[Co(1.5)(cpia)(m-bix)]}n (3), {[Co(1.5)(cpia)(p-bix)(0.5)(H2O)]H2O}n (4), {[Co(2.5)(cpia)(Hcp...

Lead acetate treatment of unfixed cells immobilizes the intracellular water-soluble, inorganic orthophosphate ions as microcrystalline lead hydroxyapatite precipitates (see reference 1) . These precipitates have been analyzed with the electron microprobe . A much higher concentration of phosphorus has been found in the nucleoli of maize root tip cells fixed in lead acetate-glutaraldehyde (organ...

Through solvothermal reactions of 2-(p-methylphenyl)-1H-imidazole-4,5-dicarboxylic acid (p-MePhH3IDC) with transition-metal ions, six coordination polymers [Pb2(p-MePhHIDC)(p-MePhH2IDC)2(phen)2]n (phen = 1,10-phenanthroline) (), [Pb(p-MePhH2IDC)2]n (), [Cd3(p-MePhHIDC)2(p-MePhH2IDC)2(H2O)2]n (), {[Cd(p-MePhHIDC)(H2O)]4·H2O}n (), {[Cd2(p-MePhHIDC)2(4,4'-bipy)]·4H2O}n (4,4'-bipy = 4,4'-bipyridine...

background and aims: the removing of (potential) toxic heavy metal ions from sewage, especially in industrial and mining waste effluents, has been widely studied in recent years. the aim of present study was to investigate the various methods for lead removal of lead ions from industrial wastewater. methods: this study was a review research. data were collected through different databases in va...

Context: The ionosphere of a comet is known to deflect the solar wind through mass loading, but interaction dependent on cometary activity. We investigate details this process at 67P using Rosetta Ion Composition Analyzer. Aims: This study aims compare and ions during two different time periods in mission. Methods: compared both integrated ion moments (density, velocity, momentum flux) velocity...