Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Juergen Heinrich Maar"'
Autor:
Juergen Heinrich Maar
Publikováno v:
Substantia (2024)
This paper presents life and work of Friedlieb Ferdinand Runge, an unusual chemist, ignored for a long time. There are discussed his researches in natural products and coal tar, the discovery of caffeine and priority claims on the discovery of quinin
Externí odkaz:
https://doaj.org/article/cca41a78f9414f06955f6259fdd07a68
Autor:
Juergen Heinrich Maar
Publikováno v:
Substantia (2023)
For various reasons, some of them linked to the evolution of the historiography of Chemistry, many recognized and important chemists in their time – and in ours, because of the legacy they left – are relegated to some degree of oblivion. One of t
Externí odkaz:
https://doaj.org/article/8066d4a3311a4989a85a496ff3221488
Autor:
Juergen Heinrich Maar
Publikováno v:
Substantia (2022)
Modern chemical technology, in the humanistic spirit of the Enlightenment, begins with Johann Beckmann (1739-1811). It followed pre-modern technologies associated with Cameralism and Chemia Applicata. Beckmann’s holistic approach to technology, exp
Externí odkaz:
https://doaj.org/article/5e768c04e8d0471eb996d518cc73488e
Autor:
Juergen Heinrich Maar, Alexander Maar
Publikováno v:
Substantia, Vol 3, Iss 2 (2019)
In this essay, we aim to provide an overview of the periodic table’s origins and history, and of the elements which conspired to make it chemistry’s most recognisable icon. We pay attention to Mendeleev’s role in the development of a system for
Externí odkaz:
https://doaj.org/article/335cd8923ce44b59bee865880152a92f
Autor:
Juergen Heinrich Maar
Publikováno v:
Substantia, Vol 2, Iss 2 (2018)
The chemical history of the supposed element didymium may well be characterised as a case of collecting empirical data in a period of “normal” science. But this element’s history also reveals little known facts of the history of chemistry in So
Externí odkaz:
https://doaj.org/article/e6889045ef8f45189f9e117bfbe9938e
Autor:
Juergen Heinrich Maar
Publikováno v:
Química Nova, Vol 29, Iss 5, Pp 1129-1137 (2006)
This first of two papers allusive to the 200th birthday of Justus von Liebig (1803-1873) deals with the origins, life, education, ideas and influence of one of the great 19th century chemists. The principal characteristics of his "Giessen model of te
Externí odkaz:
https://doaj.org/article/105cacc419e641e0a797ff178932ab55
Autor:
Juergen Heinrich Maar, Alexander Maar
Publikováno v:
Revista Portuguesa de Filosofia. 75:2439-2478
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4299da65c99dd18b53f21b8473477ef6
https://doi.org/10.17990/rpf/2019_75_4_2439
https://doi.org/10.17990/rpf/2019_75_4_2439
Publikováno v:
Foundations of Chemistry. 17:5-22
This paper presents the contributions of Alcindo Flores Cabral (1907–1982), professor of Chemistry at the Faculdade de Agronomia Eliseu Maciel, nowadays part of the Universidade Federal de Pelotas, to chemistry teaching. It is a contribution almost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09eca97cafb4f550d355c02d93fd9125
https://doi.org/10.1007/s10698-015-9223-2
https://doi.org/10.1007/s10698-015-9223-2
Autor:
Juergen Heinrich Maar
Publikováno v:
Scientiae Studia v.10 n.4 2012
Scientiae Studia
Universidade de São Paulo (USP)
instacron:USP
Scientiae Studia, Volume: 10, Issue: 4, Pages: 671-680, Published: 2012
Scientiae Studia
Universidade de São Paulo (USP)
instacron:USP
Scientiae Studia, Volume: 10, Issue: 4, Pages: 671-680, Published: 2012
Dos diferentes fatores associados a uma mudança de paradigma e, portanto, a uma revolução química, o menos discutido é o que envolve os assim chamados experimentos exemplares, mudanças radicais na metodologia de trabalho e nos procedimentos emp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a5a034f99cf54e6306127ecd33a4724
https://doi.org/10.1590/s1678-31662012000400003
https://doi.org/10.1590/s1678-31662012000400003
Publikováno v:
Scientiae Studia. 10:773-798
Este artigo apresenta a contribuicao de Alcindo Flores Cabral (1907-1982) - professor de quimica da Faculdade de Agronomia Eliseu Maciel, hoje incorporada a Universidade Federal de Pelotas - ao ensino de quimica, uma contribuicao quase desconhecida p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b70f3f6d1d63137b8bde56aaeace744
https://doi.org/10.1590/s1678-31662012000400008
https://doi.org/10.1590/s1678-31662012000400008