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[PDF] Top 20 Determination of uranium in tree bark samples by epithermal neutron activation analysis

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Determination of uranium in tree bark samples by epithermal neutron activation analysis

Determination of uranium in tree bark samples by epithermal neutron activation analysis

... study uranium (U) concentrations were determined in certified reference materials (CRMs) and in tree bark samples collected in “Cidade Universitária Armando de Salles ... See full document

11

Trace elements detection in whole food samples by neutron activation analysis, k0-method

Trace elements detection in whole food samples by neutron activation analysis, k0-method

... conducted in recent decades about the determination of trace elements in biological ...increase of environmental pollution, other researches have also been developed about the impact ... See full document

13

Establishing adequate conditions for mercury determination in environmental samples by INAA

Establishing adequate conditions for mercury determination in environmental samples by INAA

... mainly by anthropic ...Hg determination in environmental samples is of great ...Instrumental Neutron Activa- tion Analysis (INAA) is considered an adequate method to ... See full document

18

Micro-homogeneity evaluation of a bovine kidney candidate reference material

Micro-homogeneity evaluation of a bovine kidney candidate reference material

... bottle of the bovine kidney candidate reference material was randomly chosen from the batch of 175 ...sub-samples of approximately 1 mg were analyzed by Instrumental Neutron ... See full document

9

Chemical characterization of ancient pottery from the south-west Amazonia using Instrumental Neutron Activation Analysis

Chemical characterization of ancient pottery from the south-west Amazonia using Instrumental Neutron Activation Analysis

... out in this work aims to contribute to the discussion about the ceramic objects founded in Monte Castelo’s sambaqui located at south-west ...accomplished by Miller in 1980 suggests that this ... See full document

14

Direct Potentiometric Determination of Penicillamine in Real Samples by Using Copper ISE

Direct Potentiometric Determination of Penicillamine in Real Samples by Using Copper ISE

... reached in a few seconds. Po- tential change of 30.1 mV per decade of copper ions con- centration change was recorded, with correlation coefficient of ...is in good agreement with the- ... See full document

4

Determination of phosphorus in steel samples by graphite furnace atomic absorption spectrometry.

Determination of phosphorus in steel samples by graphite furnace atomic absorption spectrometry.

... but in the range, which corresponds to the usual concentrations of iron in the sample solutions, the increase is ...determined in three standard reference materials, after its dissolution ... See full document

6

Analysis of quality and cost of FeSiMg treatment master alloy vs. cored wire in production of ductile cast iron

Analysis of quality and cost of FeSiMg treatment master alloy vs. cored wire in production of ductile cast iron

... results of studies on the use of FeSi5%Mg magnesium alloy in modern cored wire injection method for production of nodular and vermicular graphite cast irons were ...injection of Mg ... See full document

4

The application of optical measurements for the determination of accuracy of gear wheels casts manufactured in the RT/RP process

The application of optical measurements for the determination of accuracy of gear wheels casts manufactured in the RT/RP process

... Before taking the measurements, an anti-reflection coating was applied on the tested gear wheel. The thickness of the coating ranged from 0,8 µm do 1,2 µm. The measurements were taken at the Institute of ... See full document

4

Chosen aspects of thermo-mechanical phenomena in resin bonded sands by use of Hot Distortion tests

Chosen aspects of thermo-mechanical phenomena in resin bonded sands by use of Hot Distortion tests

... Two thcrmic sources (clcctric and gascous) to sarnplc hcating was testcd and analyscd. I t was intmduced the cxtended measurement and recording of choscn parameters. i.e, va[r] ... See full document

6

Use of tree species by White-throated treerunner (Pygarrhichas albogularis King) in a secondary native forest of southern Chile

Use of tree species by White-throated treerunner (Pygarrhichas albogularis King) in a secondary native forest of southern Chile

... 60). In turn, our results show that trunk crevice depth is a structural attribute of some species of trees, that has a positive and significant influence on the relative number of ... See full document

6

Chia trace elements detection by neutron activation analysis / Detecção de elementos traço de chia por análise de ativação neutrônica

Chia trace elements detection by neutron activation analysis / Detecção de elementos traço de chia por análise de ativação neutrônica

... consists of irradiating together with the samples appropriate patterns with well-known concentrations under a same neutron ...emission of characteristic gamma rays for each radioisotope, which ... See full document

6

Braz. J. Pharm. Sci.  vol.53 número2

Braz. J. Pharm. Sci. vol.53 número2

... stem bark were significantly affected by the type of extraction solvent ...indings in this study have demonstrated that the leaves and stem bark of ...source of mineral ... See full document

12

Application of time-series analysis for prediction of molding sand properties in production cycle

Application of time-series analysis for prediction of molding sand properties in production cycle

... Time-series analysis is characterized, as a data mining tool which facilitates understanding nature of manufacturing processes and permits prediction of future values of the process parameters ... See full document

5

Rev. bras. farmacogn.  vol.26 número2

Rev. bras. farmacogn. vol.26 número2

... proportion of plant species used to manage STI in Sesheke District, followed by Combretaceae (10%), Capparaceae (6%), and Loganiaceae ...represented by 1 and 2 plant ...diversity of ... See full document

7

Multivariate optimization of a method for antimony determination by hydride generation atomic fluorescence spectrometry in hair samples of patients undergoing chemotherapy against Leishmaniasis

Multivariate optimization of a method for antimony determination by hydride generation atomic fluorescence spectrometry in hair samples of patients undergoing chemotherapy against Leishmaniasis

... excitation of atoms in the gaseous phase and from the ground state using characteristic radiation photons of the element of interest and in the measurement of fluorescence ... See full document

12

Fields of study and the earnings gap by race in Brazil

Fields of study and the earnings gap by race in Brazil

... level. In 2000, individuals with tertiary education are distributed across 493 occupations, of which 104 are in the groups of managers and ...professionals. In 2010, individuals ... See full document

30

J. Braz. Chem. Soc.  vol.17 número5

J. Braz. Chem. Soc. vol.17 número5

... digestion of the biological sample with aqua regia efficiently digested the biological samples, as clear solutions were ...standard, in this case, is one isotope of the same element. In ... See full document

6

Ionizing radiation effects in Brazilian grape tree wine

Ionizing radiation effects in Brazilian grape tree wine

... consumption in several countries, brazilian grape tree can be used for the production of alternative ferments ...5.823 of November 14, 1973 [5] as "drink from the alcoholic fermentation ... See full document

14

Determination of Humic Acid by Spectrophotometric Analysis in the Soils

Determination of Humic Acid by Spectrophotometric Analysis in the Soils

... response of humic substances to dissolve in different extraction solutions can result from differences in the chemical structure of the molecules or the physical availability of the ... See full document

5

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