English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

1. É feita uma revisão do método de KJELDAHL até 1950. 2. É dada a descrição de um método, trabalhando com amostras de material biológico contendo 0,14 a 0,70 mg de N. O desvio padrão encontrado foi de 0,0007 mg. 1. The determination of organic nitrogen by the KJELDAHL method is reviewed up to 1950. 2. A method is described in which samples of biological material containing from 0.14 to 0.70 mg. N were employed. The accuracy of the obtained results was evaluated and their standard deviation was found to be 0.0007 mg. Research is beeing carried out on kjeldahlization curves of different materials which is the object of a further paper

Considerações sôbre a dosagem do nitrogênio pelo método de Kjeldahl