Tavastlands mineral-historia

Invocatio: M.G.H.

Mineral-historien öfver Åbo läns södra del

Dedicatio: Johannes Gummerus [lat. pr.].

Österbotns mineral-historia

Invocatio: M.G.H.

Om kalla artificiela mineral-vattens tilredning och nytta

Invocatio: I.G.N.

Finlands mineral-källor

Dedicatio: Daniel Walle, Johanna Magdalena Walle, s. Gylling.

Björneborgs läns mineral-historia

Invocatio: M.G.H.

Mineral-historien öfver Åbo läns norra del

Invocatio: M.G.H.

Finlands mineral-källor

Painovuosi nimekkeestä.

Sorção do inseticida tiametoxam nas frações orgânica e mineral de um latossolo amarelo

The sorption of thiamethoxam in a Brazilian Oxisol was determined in soil samples with and without organic matter for two different dephs (0-0.1 and 0.4-0.7 m). The results indicated a predominant sorption of thiamethoxam on soil without organic matter. The following Kd values of 4.25 mL g-1 (0-0.1 m, r² = 0.8534) and 5.30 mL g-1 (0.4-0.7 m, r² = 0.9884) and Kf values, 7.65 mL g-1 (0-0.1 m, r² = 0.9623) and 7.72 mL g-1 (0.4-0.7 m, r² = 0.9775) were obtained. Those sorption coefficient values indicated a small interaction between thiamethoxam for both original soil and soil without organic matter.

Johann Andreas Cramer e o "ensaio químico mineral" no século XVIII

In this research, we seek to corroborate the contributions of Chemistry to the identification, extraction and classification of minerals in the XVIII century, as well as, to approach the discussion that History of Chemistry shouldn't be understood in terms of a tight line of thoughts. For that, we analyze the work of Johann Andreas Cramer (1710-1777), Elements of the Art of Assaying Metals. Cramer proposed a method of mineral assaying based on the chemical behavior of the bodies, which allowed him to identify, extract and classify the minerals with more assertiveness.

Björneborgs läns mineral-historia

Invocatio: M.G.H.

Avaliação da composição mineral do chá da folha senescente de Montrichardia linifera (arruda) schott (araceae) por espectrometria de absorção atômica com chama (FAAS)

Levels of Ca, Mg, Fe, Zn, Cu and Mn were determinated by FAAS in the tea and dry matter from senescent leaf from Montrichardia linifera, plant used in folk medicine Amazon. The content of these metals that are transferred of the leaf to the infusions have presented significant reductions, however, the Mn values in the infusion may exceed the tolerable daily intake (11 mg) if consumption of this tea is greater than 1.0 L per day. So the tea of senescent leaves of M. linifera may be considered as a toxic beverage and thus its use is not advised.

Stratification of regional sampling by model-predicted changes of carbon stocks in Forested mineral soils

Selective papers of the workshop on "Development of models and forest soil surveys for monitoring of soil carbon", Koli, Finland, April 5-9 2006.

Classificação multivariada de ervas medicinais da Região Amazônica e suas infusões de acordo com sua composição mineral

In this study, the mineral composition of leaves and teas of medicinal plants was evaluated. Ca, Cu, Fe, Mg, Mn e Zn were determined in the samples using flame atomic absorption spectrometry. Principal component analysis was applied to discriminate the samples studied. The samples were divided within the 2 groups according to their mineral composition. Copper and iron were the variables that contributed most to the separation of the samples followed by Ca, Mg, Mn and Zn. The information in the principal component analysis was confirmed by the dendrogram obtained by hierarchical cluster analysis.

Potencial uso de serpentinito no armazenamento mineral do CO2

Rising anthropogenic CO2 emissions are considered a major contributor to the greenhouse effect. There are several options for reducing atmospheric CO2 levels, and among these alternatives, Carbon Capture and Storage (CCS) has been identified as an effective and promising approach. This work investigated the feasibility of using serpentinite as a vehicle for carbon storage presenting a source-sink match. The main results of the work confirmed that serpentinite is appropriate for the carbonation process due to the high concentration of Mg in its composition.