搜索结果: 76-90 共查到“理学 Lead”相关记录92条 . 查询时间(0.062 秒)
We present a budget for lead, zinc, and copper in Lough Neagh, Northern Ireland, and use the results from this and seven other lakes in Europe and the United States to develop two simple, generic mode...
The Utilization of a Cyclotron CV-28 in Basic and Applied Nuclear Research and in an Experimental Accelerator Driven System Zero Power Lead Sub Critical Facility
a Cyclotron CV-28 Nuclear Research an Experimental Accelerator Driven System Zero Power Lead Sub Critical Facility
2010/10/25
This paper describes the IPEN Cyclotron CV-28, and its utilization in basic and applied physics and to drive a zero power lead Accelerator Driven System (ADS), as a milestone in a road map for a progr...
Determination of Manganese, Copper, Cadmium and Lead by FAAS after Solid-Phase Extraction of Their Phenylpiperazine Dithiocarbamate Complexes on Activated Carbon
Solid-phase extraction phenylpiperazine dithiocarbamate manganese copper cadmium lead flame atomic absorption spectrometry activated carbon
2010/4/21
A solid-phase extraction method was developed for the pre-concentration of manganese, copper, cadmium and lead in water samples prior to their determination by flame atomic absorption spectrometry usi...
Predicting wave exposure in the rocky intertidal zone: Do bigger waves always lead to larger forces?
wave exposure rocky intertidal zone bigger waves larger forces
2014/5/20
Hydrodynamic forces from breaking waves are among the most important sources of mortality in the rocky intertidal zone. Information about the forces imposed by breaking waves is therefore critical if ...
Formation and Elastic Behavior of Lead-Magnesium Chlorophosphate Glasses
Chlorophosphate glasses Wave velocities Elastic constants
2010/4/12
A series of ternary lead-magnesium chlorophosphate glasses, (PbCl2)x(MgO)1 - x(P2O5)0.4, of various compositions with 0.3 \le x \le 0.45 have been successfully prepared and their elastic properties ha...
Solid-Phase Extraction of Copper with Lead 4-benzylpiperidinedithiocarbamate on Microcrystalline Naphthalene and its Spectrophotometric Determination
Solid-phase extraction copper 4-benzylpiperidinedithiocarbamate UV-VIS spectrophotometry microcrystalline naphthalene
2010/4/22
Using lead 4-benzylpiperidinedithiocarbamate complex (Pb(4-BPDC)2), a solid-phase extraction method was developed for pre-concentration and spectrophotometric determination of copper in water samples....
A whole-basin study of sediment accumulation using stable lead isotopes and flyash particles in an acidified lake, Sweden
A whole-basin study sediment accumulation stable lead isotopes flyash particles acidified lake Sweden
2014/5/30
Using analyses of lead concentrations, lead isotopes (206Pb/207Pb), and spheroidal carbonaceous flyash particles (SCP), we studied sediment accumulation patterns in the acidified lake Ha¨rsvatten in s...
All Solid-State Contact Lead(II) Ion-selective PVC Membrane Electrode Using Dimethylene Bis(4-methylpiperidinedithiocarbamate) Neutral Ionophore
All solid-state contact lead(II) ion-selective membrane electrode Dimethylene bis(4-methylpiperidinedithiocarbamate) Ionophore
2010/6/27
All solid-state contact PVC membrane electrodes for lead(II) ion were developed by using dimethylene bis(4-methylpiperidinedithiocarbamate) as neutral carrier and nitrophenyloctyl ether or dioctylseba...
Effect of Temperature on the Toxicity of Zinc, Copper and Lead to the Freshwater Amphipod Gammarus pulex pulex(L., 1758)
Zinc copper lead temperature Gammarus pulex pulex
2010/3/31
This study showed the effect of temperature on copper, zinc and lead toxicity to the freshwater amphipod Gammarus pulex pulex. 96-h LC 50 values were estimated for copper, zinc and lead in this specie...
Copper, Zinc, Lead and Cadmium Concentrations in the Mediterranean Mussel Mytilus galloprovincialisLamarck, 1819 From the Sinop Coast of the Black Sea
Mytilus galloprovincialis biomonitor heavy metal
2010/4/1
The concentrations of copper, zinc, lead and cadmium in the living tissue of the Mediterranean mussel Mytilus galloprovincialis from the Sinop coasts of the Black Sea were measured by atomic absorptio...
XAFS determination of the chemical form of lead in smelter-contaminated soils and mine tailings: Importance of adsorption processes
smelter-contaminated soils mine tailings adsorption processes oxyhydr
2012/3/31
Weinvestigatedsmelter-contaminatedsoilsfromEvin-Malmaison,Nord-Pas-de-Calais,
France,andminetailingsfromLeadville,Colorado,U.S.A.BulkPbconcentrationsrange
from460to1900ppminthetopsoilsatEvin-Malmais...
High temperature in situ structural investigation on lead feldspar
High-temperature increase
2012/3/30
Single-crystalX-raydiffractionwasperformedinsituat T 20,230,465,and700C
Si O , I2/c,a 8.402, b 13.043, c 14.308
onapartiallyorderedleadfeldspar(PbAl2 2 8351??
A, 115.30, V 1417.6A ; Q 0.71).Theunit...
Structural variations induced by thermal treatment in lead feldspar (PbAl2Si2O8)
Structural variations thermal treatment lead feldspar
2012/3/30
Lead feldspar single crystals were annealed at T 5 1050 and 1000 8 C, starting from a disordered metastable configuration (PbFH, Qod5 0) and from an ordered configura-tion (PbFL, Qod5 0.89). Single-cr...
Morphology of Lead(II) and Chromium(III) Reaction Products on Phyllosilicate Surfaces as Determined by Atomic Force Microscopy
Atomic Force Microscopy Clay FTIR Geochemical Equilibrium Model Mica Remediation Smectite X-ray
2011/12/27
Abstract: Redox and acid-base reactions play important roles in the fate of metal contaminants in soils and sediments. The presence of significant amounts of Cr, Pb and other toxic heavy metals in con...
Cation ordering in lead-molybdenum-vanadium oxychlorides
Cation lead-molybdenum-vanadium oxychlorides
2012/4/9
The crystal chemistry and structure ofthe layered lead oxychloride parkinsonite, ideally Pb7Mo09C12, have been reevaluated in the light of TEM observations of natural and syn-thetic samples and the st...