Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 1 - 10
of
1,503
D. Secrieru, Adriana Secneru- Ba concentrations in the Romanian shetf EFFECTS OF OIL DRILLING ACTIVITIES ON Ba GONCENTRATIONS IN SUPERFICIAL SEDIMENTS FROM THE BLACK SEA ROMANIAN SHELF'
"... Abstrac [ Graphical and mathematical nalyses of analytical data for CaCOs, Fe2O!, MnO and Ba conc€ntrations insediments from Black Sea continental shelf have identified a 30 % increase of Ba mean concentration in superfrcial sediments attributable to oil exploratory and productive wells drillings. A ..."
Abstract
- Add to MetaCart
Abstrac [ Graphical and mathematical nalyses of analytical data for CaCOs, Fe2O!, MnO and Ba conc€ntrations insediments from Black Sea continental shelf have identified a 30 % increase of Ba mean concentration in superfrcial sediments attributable to oil exploratory and productive wells drillings
The role of submarine groundwater discharge
"... discharge conditions, Ba concentrations indicated slight non-conservative mixing. Such Ba excesses could be attributed either to submarine ..."
Abstract
- Add to MetaCart
discharge conditions, Ba concentrations indicated slight non-conservative mixing. Such Ba excesses could be attributed either to submarine
Chemical differentiation of the Earth: the relationship between mande, continental crust, and oceanic crust.
- Earth Planet. Sci. Lett.,
, 1988
"... The average chemical compositions of the continental crust and the oceanic crust (represented by MORB), normalized to primitive mantle values and plotted as functions of the apparent bulk partition coefficient of each element, form surprisingly simple, complementary concentration patterns. In the c ..."
Abstract
-
Cited by 177 (2 self)
- Add to MetaCart
. In the continental crust, the maximum concentrations are on the order of 50 to 100 times the primitive-mantle values, and these are attained by the most highly incompatible elements Cs, Rb, Ba, and Th. In the average oceanic crust, the maximum concentrations are only about 10 times the primitive mantle values
Bromophenol concentrations in fish from Salvador, BA, Brazil
, 2008
"... The main objective of this work is to evaluate the occurrence of bromophenols (2-bromophenol, 4-bromophenol, 2,4-dibromophenol, 2,6-dibromophenol and 2,4,6-tribromophenol), in the flesh and guts in two species of the Lutjanidae Family: Lutjanus synagris and Ocyurus chrysurus. The bromophenols were e ..."
Abstract
- Add to MetaCart
extracted by steam distillation with pentane-ether (7:3 v/v), identified by reverse phase High Performance Liquid Chromatography (HPLC-UV), and quantified by the external-standard method. Total bromophenol concentrations were similar in the muscle of both species, ranging from 36 ng g–1 to 349 ng g–1
Blockade of current through single calcium channels by Cd 2� , Mg 2� , and Ca 2� . Voltage and concentration dependence of calcium entry into the
, 1986
"... and other multivalent ions on single Ca channel currents in cell-attached patch recordings from guinea pig ventricular cells. External Cd or Mg ions chopped long-lasting unitary Ba currents promoted by the Ca agonist Bay K 8644 into bursts of brief openings. The bursts appear to arise from discrete ..."
Abstract
-
Cited by 57 (5 self)
- Add to MetaCart
rate was more or less independent ofthe blocker concentration. Other kinetic features suggested that both Cd 2 ' and Mg ` lodge within the pore. The unblocking rate was speeded by membrane hyperpolarization or by raising the Ba concentration, as if blocking ions were swept into the myoplasm
ARPN Journal of Agricultural and Biological Science EFFECTS OF BA AND IBA CONCENTRATIONS AND SUBCULTURE FREQUENT ON MERISTEM CULTURE OF STRAWBERRY
"... ABSTRACT The meristems excised from runners of Camarosa and Redpearl strawberry cultivars were cultured in MS media enriched with 1H-indole-3-butanoic acid (IBA: 0.2, 0.3, 0.4, 0.5, 0.6 ppm) and BA (0.5, 0.6, 0.7, 0.8, 0.9 ppm) that were applied separately in three replications. BA generated plantl ..."
Abstract
- Add to MetaCart
plantlets were subcultured in the same media to produce S i plantlets (i= 1 st , 2 nd , 3 rd subculture) before root initiation. The result showed that all explants in IBA produced one plantlet and 0.2 ppm produced the best plantlet performance, while all of BA concentration induced multiple plantlets and 0
unknown title
"... 7 [1] The seasonal and spatial variability of dissolved Barium (Ba) in the Amundsen Gulf, 8 southeastern Beaufort Sea, was monitored over a full year from September 2007 to 9 September 2008. Dissolved Ba displays a nutrient‐type behavior: the maximum water 10 column concentration is located below th ..."
Abstract
- Add to MetaCart
7 [1] The seasonal and spatial variability of dissolved Barium (Ba) in the Amundsen Gulf, 8 southeastern Beaufort Sea, was monitored over a full year from September 2007 to 9 September 2008. Dissolved Ba displays a nutrient‐type behavior: the maximum water 10 column concentration is located below
Discrete Ba 2� block as a probe of ion occupancy and pore structure
- in the high-conductance Ca 2� - 361 Cibulsky and Sather K
, 1988
"... ABSTRACT In this study, high-conductance Ca2+-activated K + channels from rat skeletal muscle were incorporated into planar phospholipid bilayers, and discrete blockade of single channels by Ba ~+ was studied. With 150 mM K § held constant in the internal solution, increasing external K + over the r ..."
Abstract
-
Cited by 34 (5 self)
- Add to MetaCart
the range 100-1,000 mM raises the rate of Ba 2+ dissociation. This "enhancement effect, " which operates at K § concentrations 3-4 orders of magnitude higher than those required for the "lockin" effect described previously, depends on applied voltage, saturates with K § concentration
Chromatographic characterization of surfaces < + \ + BA
, 1989
"... Abstract -The influence of physical and chemical surface properties of silica on surface retention is described. The surface area within the column governs retention. The inf luence of sodium content at concentrationsbelowO.1 % on selectivity is demonstrated. For characterization of reversed phases ..."
Abstract
- Add to MetaCart
,selectivity is determined by the concentration of the surface silanols (ref. 1). One can differentiate at least between two surface groups (ref. 2), the isolated silanols, and those which are hydrogen-bonded to adjacent ones. These differences can be seen by DRIFT (diffuse-refeltctance infrared fourier tfansform
Raman Scattering Study of Ba-doped C60 with t1g States
, 1998
"... Raman spectra are reported for Ba doped fullerides, BaxC60 (x=3, 4, and 6). The lowest frequency Hg modes split into five components for Ba4C60 and Ba6C60 even at room temperature, allowing us a quantitative analysis based on the electron-phonon coupling theory. For the superconducting Ba4C60, the d ..."
Abstract
- Add to MetaCart
shift depending on the Ba concentration, being roughly consistent with the full charge transfer from Ba to C60. An effect of hybridization between Ba and C60 π orbitals is also discussed. PACS numbers: 78.30.-j, 72.80.Rj, 74.70.-b 1 I.
Results 1 - 10
of
1,503
