SOIL PHOSPHORUS THRESHOLDS IN EVALUATING RISK OF ENVIRONMENTAL TRANSFER TO SURFACE WATERS IN SANTA CATARINA, BRAZIL

The State of Santa Catarina, Brazil, has agricultural and livestock activities, such as pig farming, that are responsible for adding large amounts of phosphorus (P) to soils. However, a method is required to evaluate the environmental risk of these high soil P levels. One possible method for evaluating the environmental risk of P fertilization, whether organic or mineral, is to establish threshold levels of soil available P, measured by Mehlich-1 extractions, below which there is not a high risk of P transfer from the soil to surface waters. However, the Mehlich-1 extractant is sensitive to soil clay content, and that factor should be considered when establishing such P-thresholds. The objective of this study was to determine P-thresholds using the Mehlich-1 extractant for soils with different clay contents in the State of Santa Catarina, Brazil. Soil from the B-horizon of an Oxisol with 800 g kg-1 clay was mixed with different amounts of sand to prepare artificial soils with 200, 400, 600, and 800 g kg-1 clay. The artificial soils were incubated for 30 days with moisture content at 80 % of field capacity to stabilize their physicochemical properties, followed by additional incubation for 30 days after liming to raise the pH(H2O) to 6.0. Soil P sorption curves were produced, and the maximum sorption (Pmax) was determined using the Langmuir model for each soil texture evaluated. Based on the Pmax values, seven rates of P were added to four replicates of each soil, and incubated for 20 days more. Following incubation, available P contents (P-Mehlich-1) and P dissolved in the soil solution (P-water) were determined. A change-point value (the P-Mehlich-1 value above which P-water starts increasing sharply) was calculated through the use of segmented equations. The maximum level of P that a soil might safely adsorb (P-threshold) was defined as 80 % of the change-point value to maintain a margin for environmental safety. The P-threshold value, in mg dm-3, was dependent on the soil clay content according to the model P-threshold = 40 + Clay, where the soil clay content is expressed as a percentage. The model was tested in 82 diverse soil samples from the State of Santa Catarina and was able to distinguish samples with high and low environmental risk.

Educação no asilo dos expostos da Santa Casa em São Paulo: 1896-1950

Este texto pretende identificar aspectos da educação das crianças de zero a seis anos, no Asilo dos Expostos da Santa Casa de Misericórdia de São Paulo, de 1896 até 1950. Para tanto, foram consultados os Relatórios dos Mordomos dos Expostos. O texto trata inicialmente das propostas para os bebês, e posteriormente das propostas para as crianças de três a seis anos. Em relação aos bebês, o aspecto mais importante foi o fato de as crianças não serem mais entregues às amas para serem criadas, permanecendo no berçário, que foi fundado em 1936. Com relação às crianças maiores, desde o início do século identifica-se a existência do jardim-de-infância, que irá também se renovar na década de 1940, com a chegada de profissionais ligadas à secretaria estadual de educação. As propostas e as concepções pedagógicas existentes na sociedade se manifestam nas funções educacionais do asilo.

Aspectos sanitarios del archivo de la parroquia de Santa Ana de Buñuel (Navarra)

El llibre continua la línia d'investigació iniciada pels doctors Camps i que consisteix en l'estudi dels arxius parroquials per a conèixer la història local de la pràctica de la medicina.Concretament, aquest estudi s'ha centrat en els arxius parroquials de Santa Ana de Buñuel, a Navarra.El propòsit del treball és doble: l'estudi del personal sanitari i l'estudi de les causes de mort en el període estudiat.

Els Goigs de l'Hospital General de Santa Creu de Barcelona

L'obra recull per ordre cronòlogic tots els goigs, des del primer conegut, cantats a l'Hospital de la Santa Creu. També estan recollits els càntics actuals de les Germanes Hospitalàries de la Santa Creu.

[Rome. Basilica di Santa Maria in Aracoeli]

Référence bibliographique : Weigert, 507

[Rome. Basilica di Santa Maria in Aracoeli]

Référence bibliographique : Weigert, 549

[Rome. Basilica di Santa Maria in Domnica]

Référence bibliographique : Weigert, 551

[Rome. Chiesa di Santa Maria di Loreto]

Référence bibliographique : Weigert, 550

[Rome. Basilica di Santa Maria Maggiore]

Référence bibliographique : Weigert, 552

[Tarquinia. Chiesa di Santa Maria in Castello]

Référence bibliographique : Weigert, 88

[Fiumicino. Chiesa Santa Maria Porto della Salute ; Torre Clementina]

Référence bibliographique : Weigert, 116

[Montefiascone. Chiesa Santa Margherita]

Référence bibliographique : Weigert, 220

[Priverno. Basilica cattedrale di Santa Maria Annunziata, Palazzo Comunale]

Référence bibliographique : Weigert, 346

[Viterbe. Chiesa di Santa Maria Nuova]

Référence bibliographique : Weigert, 745