Results 61 to 70 of about 3,070 (183)

Calorímetro de gelo: uma abordagem histórica e experimental para o ensino de química na graduação

Química Nova, 2010
In addition to the usual advantage of an ice calorimeter of being able to measure slow heat changes, the instrument described here is extremely simple to construct and operate.
Guilherme W. Tavares, Alexandre G. S. Prado   +1 more
doaj   +1 more source

A Review of Metal–Organic Framework (MOF) Based Active Food Packaging: Materials Selection, Cellulose Matrices Current Advances, Synthesis and Characterizations

Packaging Technology and Science, Volume 39, Issue 5, Page 533-572, May 2026.
Active packaging offers an effective approach to extending food shelf life. This review summarizes the past decade of progress in metal‐organic framework (MOF)‐based active food packaging, highlighting material selection, characterization, challenges, and future prospects.
Belladini Lovely, Young‐Teck Kim, Haibo Huang, Novitri Hastuti, Su Jung Hong   +4 more
wiley   +1 more source

Asymmetric 1,4-bis(ethynyl)bicyclo[2.2.2]octane rotators via monocarbinol functionalization. Ready access to polyrotors

Beilstein Journal of Organic Chemistry, 2015
Asymmetric rotators with a 1,4-bis(ethynyl)bicyclo[2.2.2]octane (BCO) core are needed for engineering crystalline arrays of functional molecular rotors.
Cyprien Lemouchi, Patrick Batail
doaj   +1 more source

Correspondence of Lavoisier [PDF]

Nature, 1956
Oeuvres de Lavoisier Correspondance. Par Rene Fric. Fascicule 1: 1763–1769. Pp. xviii + 252. (Paris: Editions Albin Michel, 1955.) 2,750 francs or 8.5 dollars.
openaire   +1 more source

Reconfiguration of N Metabolism upon Hypoxia Stress and Recovery: Roles of Alanine Aminotransferase (AlaAT) and Glutamate Dehydrogenase (GDH)

Plants, 2016
In the context of climatic change, more heavy precipitation and more frequent flooding and waterlogging events threaten the productivity of arable farmland.
Houssein Diab, Anis M. Limami
doaj   +1 more source

On mathematical structures on pairwise comparisons matrices with coefficients in an abstract group arising from quantum gravity

Heliyon, 2019
We describe the mathematical properties of pairwise comparisons matrices with coefficients in an arbitrary group. Inspired by the well-known mathematical structures of quantum gravity and lattice gauge theories in physics and by the application of this ...
Jean-Pierre Magnot
doaj   +1 more source

Lavoisier and the History of Chemistry

Ambix
During the eighteenth century, authors of chemical treatises and courses on chemistry often introduced their work with a chapter devoted to the history of chemistry. While there may have been different reasons for the use of history, its importance was never seriously questioned.
openaire   +3 more sources

Lavoisier medal [PDF]

Journal of the Franklin Institute, 1878
n ...
openaire   +2 more sources

Del incoloro al rojo a través del equilibrio

Educación Química, 2018
El estudio de las propiedades químicas de la materia ha entretenido durante siglos a los químicos del mundo. Las investigaciones realizadas en este campo durante el siglo xviir, en particular los trabajos hechos por Black, Cavendish, Pristley y ...
Kira Padilla
doaj   +1 more source

Resolución de problemas científicos desde la historia de la ciencia: retos y desafíos para promover competencias cognitivo lingüísticas en la química escolar History of Science in the resolution of scientific problems: contributions to promote linguistic cognitive strengths for school Chemistry

Ciência & Educação, 2008
En este artículo proponemos abordar el enfrentamiento a la resolución de problemas en la química escolar por parte de los y las estudiantes asumiendo situaciones a las que se han enfrentado los científicos y las científicas en determinados y ...
Johanna Patricia Camacho González, Mario Quintanilla Gatica   +1 more
doaj   +1 more source