Documentary material relating to the history of Iowa - Volume 1, 1895.

Benjamin F. Shambaugh edited and compiled documents and publications for this book on the history of Iowa. This volume 1 includes documentary material from the Louisiana Purchase, the Territories of the Northwest, Wisconsin and Iowa; the Convention of 1857;the Iowa Constitution of 1846 and the Ratification of Constitutional Amendments.

Ammonia volatilization and yield components after application of polymer-coated urea to maize

A form of increasing the efficiency of N fertilizer is by coating urea with polymers to reduce ammonia volatilization. The aim of this study was to evaluate the effect of polymer-coated urea on the control of ammonia volatilization, yield and nutritional characteristics of maize. The experiment was carried out during one maize growing cycle in 2009/10 on a Geric Ferralsol, inUberlândia, MG, Brazil. Nitrogen fertilizers were applied as topdressing on the soil surface in the following urea treatments: polymer-coated urea at rates of 45, 67.5 and 90 kg ha-1 N and one control treatment (no N), in randomized blocks with four replications. Nitrogen application had a favorable effect on N concentrations in leaves and grains, Soil Plant Analysis Development (SPAD) chlorophyll meter readings and on grain yield, where as coated urea had no effect on the volatilization rates, SPAD readings and N leaf and grain concentration, nor on grain yield in comparison to conventional fertilization.

Methods to Quantify Nickel in Soils and Plant Tissues

In comparison with other micronutrients, the levels of nickel (Ni) available in soils and plant tissues are very low, making quantification very difficult. The objective of this paper is to present optimized determination methods of Ni availability in soils by extractants and total content in plant tissues for routine commercial laboratory analyses. Samples of natural and agricultural soils were processed and analyzed by Mehlich-1 extraction and by DTPA. To quantify Ni in the plant tissues, samples were digested with nitric acid in a closed system in a microwave oven. The measurement was performed by inductively coupled plasma/optical emission spectrometry (ICP-OES). There was a positive and significant correlation between the levels of available Ni in the soils subjected to Mehlich-1 and DTPA extraction, while for plant tissue samples the Ni levels recovered were high and similar to the reference materials. The availability of Ni in some of the natural soil and plant tissue samples were lower than the limits of quantification. Concentrations of this micronutrient were higher in the soil samples in which Ni had been applied. Nickel concentration differed in the plant parts analyzed, with highest levels in the grains of soybean. The grain, in comparison with the shoot and leaf concentrations, were better correlated with the soil available levels for both extractants. The methods described in this article were efficient in quantifying Ni and can be used for routine laboratory analysis of soils and plant tissues.

Report of the Code Commission : to accompany the code as reported to the Twenty-sixth General Assembly of Iowa, in accordance with the provisions of chapter one hundred and fifteen of the acts of the Twenty-fifth General Assembly,1895.

This is the Report of the Code Commissioners to the Twenty-fifth General Assembly of the State of Iowa

Els antecedents de la crisi de l'estat liberal a Espanya i a Itàlia: una visió comparada (1875-1895)

The author proposes a comparative study in the frame of a macroarea formed by the south European countries. He points out the characteristics and difficulties of the liberal state establishment in the Mediterranean countries. At the same time he underlines the new importance of the intellectuals roll as one of the main consequences of that crisis.

Els antecedents de la crisi de l'estat liberal a Espanya i a Itàlia: una visió comparada (1875-1895)

The author proposes a comparative study in the frame of a macroarea formed by the south European countries. He points out the characteristics and difficulties of the liberal state establishment in the Mediterranean countries. At the same time he underlines the new importance of the intellectuals roll as one of the main consequences of that crisis.

Las investigaciones de Leo Frobenius y el Forschungsinstitut für Kulturmorphologie (FK) sobre el arte rupestre en España (1934-1936).

Leo Frobenius, fundador del Afrika Archiv y director del Forschungsinstitut für Kulturmorphologie (FK), centró la mayor parte de su actividad etnográfica en la documentación y estudio del arte rupestre. Tras estudiar las obras de Hugo Obermaier sobre el arte parietal en la Península Ibérica, decidió, en 1934, organizar una expedición para documentar los principales yacimientos francocantábricos y del Levante español. En ella se estudiaron tan sólo los yacimientos de Roca dels Moros de Cogul y el Barranco de la Valltorta, pero sirvió de base para la programación de una nueva expedición cuyos objetivos eran mucho más ambiciosos. En 1935, con la ayuda de Obermaier, Bosch Gimpera y Martínez Santa Olalla, y el amparo diplomático de la Embajada de Alemania en Madrid, realizó la petición de acceso a las principales cuevas con arte parietal, permiso que consiguió tras arduas negociaciones. En los meses previos al inicio de la Guerra Civil, un grupo de dibujantes y fotógrafos del FK trabajó en las cuevas de El Castillo, La Pasiega y Altamira, obteniendo copias a escala natural de grabados y pinturas que pasaron a formar parte del archivo del Instituto. En 1938, y como consecuencia del apoyo de Alemania al bando nacional, Martínez Santa Olalla, miembro de la Falange, se convirtió en el referente de Frobenius en España, desplazando a Obermaier. Dicha relación tendría como consecuencia el giro en la política arqueológica de los vencedores de la contienda y su vinculación con la organización Das Ahnenerbe de las SS.

[Narni. Ponte di Augusto]

Référence bibliographique : Weigert, 289