Results 71 to 80 of about 24,789 (204)

Synthese und Reaktivität sechsgliedriger zyklischer Diaryl λ3‐Bromane und λ3‐Chlorane

open access: yesAngewandte Chemie, Volume 137, Issue 14, April 1, 2025.
Die Synthese sechsgliedriger hypervalenter Brom(III)‐ und Chlor(III)‐Verbindungen über ihre Diazoniumsalze wird vorgestellt. Chemo‐ und regioselektive O‐ und S‐Arylierungen mit hohen Ausbeuten sind bei Raumtemperatur möglich, was durch Modifizierung der Reaktionsbedingungen auch zur inter‐ oder intramolekularen Biarylsynthese genutzt werden kann ...
Dhananjay Bhattacherjee   +4 more
wiley   +1 more source

RECADO À DONA CLEO (MONTEIRO LOBATO).

open access: yesRevista Ciências Humanas, 2022
Texto em forma de "recado" promovendo avaliação sobre a recepção atual da obra de Lobato. Com ênfase aos problemas sobre racismo e "politicamente correto", pretende-se discutir o revisionismo lobatiano.
openaire   +1 more source

Synthesis and Reactivity of Six‐Membered Cyclic Diaryl λ3‐Bromanes and λ3‐Chloranes

open access: yesAngewandte Chemie International Edition, Volume 64, Issue 14, April 1, 2025.
The synthesis of six‐membered hypervalent bromine(III) and chlorine(III) compounds through their diazonium salts is demonstrated. High yielding chemo‐ and regioselective O‐ and S‐arylations are possible at ambient temperature, which can also be utilized for intermolecular or intramolecular biaryl synthesis by modifying the reaction conditions ...
Dhananjay Bhattacherjee   +4 more
wiley   +1 more source

As atitudes face ao uso do computador e da internet: Uma experiência com alunos de Ciências do Ensino Secundário [PDF]

open access: yes, 2011
Num estudo realizado ao longo dos anos lectivos 2008-2009 e 2009-2010 foram recolhidos dados que permitiram estudar as atitudes dos alunos face ao computador e à Internet e a relação entre as atitudes e o uso que os alunos dizem fazer destas ferramentas.
Miranda, Guilhermina Lobato   +1 more
core  

In search of the "Lobato of the letters" : the construction of the Monteiro Lobato's image before his addressees [PDF]

open access: yes, 2018
Orientador: Marisa Philbert LajoloTese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da LinguagemResumo: O objetivo desta tese é identificar e analisar o ¿Lobato das cartas¿, ou seja, o processo de construção da imagem de Monteiro
Tin, Emerson
core  

Coletânea de excertos sobre polêmicas literárias recentes [PDF]

open access: yes, 2011
Excerpts of controversies involving the Jabuti Prize in 2010 and the book Caçadas de Pedrinho, by Monteiro Lobato, in the National Program of School Library.Excertos das polêmicas envolvendo o Prêmio Jabuti de 2010 e a presença do livro Caçadas de ...
Alves, Laura Penna, Santiago, Emmanuel
core   +2 more sources

Acute Schistosomiasis in Brazilian Traveler: The Importance of Tourism in The Epidemiology of Neglected Parasitic Diseases

open access: yesCase Reports in Infectious Diseases, 2012
Parasitic infectious diseases acquired in tourist areas may pose a challenge to physicians and to travel medicine practitioners. Acute schistosomiasis may be seen in returning travelers and migrants after primary infection.
Diego Averaldo Guiguet Leal   +7 more
doaj   +1 more source

Sensor and Methodology for Dielectric Analysis of Vegetal Oils Submitted to Thermal Stress

open access: yesSensors, 2015
Vegetable oils used in frying food represent a social problem as its destination. The residual oil can be recycled and returned to the production line, as biodiesel, as soap, or as putty.
Sergio Luiz Stevan   +4 more
doaj   +1 more source

Monteiro Lobato in the press

open access: yesMatrizes, 2014
The article discusses the importance of the work developed by Monteiro Lobato in the press, focusing on the territory where he started his activities: the Parayba Valley. The approach herein is to explore a facet of the writer still little described in the academic field, i.
openaire   +4 more sources

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