Trace metals such as Cu Zn and Cd were measured in freshwater surface coatings which were developed in different natural waters . It is found that freshwater surface coatings exert some ability of enrichment on trace metals in aquatic environments .

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SURFACE ENRICHMENT OF RESIDUAL ELEMENTS AND OXIDATION OF THE AUSTENITE GRAIN BOUNDARIES & A Study on the Hot Shortness Mechanism of Mild Steel

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Surface segregation and enrichment of the polymer chains grafted in the surface of the particle occurred during the gel process which can significantly improve the hydrophilicity antifouling and flux of the membrane .

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Adsorption and desorption of fluorine at the surface of goethite is an important mechanism for fluorine migration and enrichment in the soil water system of the karst areas .

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Surface Enrichment of Substrate Elements Passing Through Coating Layer-A Problem to Merit Attention in Plating

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Quantitative Model Considering Surface Enrichment to Estimate Soil Erosion Rates Using 137 Cs

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Response surface method was used to optimize the MRS-based enrichment medium of S.

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The experiment shows : the surface of copper-containing steel ( 0.025-0.28 % Cu ) under skin of iron oxide will produce enrichment of Cu-Ni-As element ( or phase of enrichment ) partially after being oxidized by the high temperature .

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Substrate element surface enrichment and diffusion barrier

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Different from the surface enrichment in Cu or the formation of homogeneous alloy generally observed on Ni-Cu catalysts the surface of the above-mentioned catalysts was enriched in Ni .

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During constructing the model the depth of surface enrichment layer the 137 Cs depth distribution pattern in enrichment layer the radioactive decay of 137 Cs the 137 Cs input fraction the depth of plow layer and sampling year were considered .

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Surface enrichment of substrate elements passing through coating layer may cause the coating layer to loss its function and significance and result in fail-ure of parts or devices .

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Phenomenon of Surface Enrichment of La in La Dregs during the Reduction of Sm_2O_3with Metal La Research of Surface Enrichment of La During the Thermal Reducing of Sm_2O_3 with Metal La

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Based on these results the mechanism of alkali attack dissolution-causing protective film because of surface enrichment - rupture of protective film-dissolution was suggested .

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Surface layer enrichment phenomena of xenon and cesium implanted in silicon and aluminium

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The results of surface tension calculation suggest a decrease in the surface tension of Sn-Zn-Bi alloys as a result of the enrichment of the surface with Bi atoms .

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Due to the high surface reactivity and large surface areas the most important role of surface coatings in the aquatic environments is the adsorption or enrichment of pollutants in the water .

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The test results show that the main factors causing surface crack on thin strip are the enrichment of impurity elements ( Cu Sn Sb et al . ) in the interface of matrix and iron scale as well as the upper contents of residual elements in steel .

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We discover that the surface defects of copper-containing steel plate such as moon form scab form belong to the folding defect having nothing to do with the enrichment of Cu-Ni .

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Surface modification of microfluidic chip and its application in protein enrichment

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The leaching loss rate of gold in oxidation zone its surface indicative cut-off grade indicative average grade and enrichment factor for two typical deposits were calculated by using the formula derived .

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The total copper in standard sample and surface water was determined by extraction enrichment flame AAS ( enriched for 20 time ) and graphite furnace AAS respectively .

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Moreover two of the obtained PMOs with similar particle size pore size pore volume and surface area but different pore structures ( cubic and hexagonal ) were chosen for the peptides enrichment in order to explore the effect of pore symmetry on the enrichment performance .

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The method of dynamic solution surface ( DSS ) used in the deep solution flow culture was put forward after having summarized and analyzed the technique and methods of oxygen enrichment used in the hydro culture .

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