Results 41 to 50 of about 41,593 (161)
Datación absoluta por termoluminiscencia de material cerámico y carbonatos procedentes del yacimiento arqueológico de la Cueva de Benzú (Ceuta). [PDF]
, 2004 Capítulo del libro: Avances en Arqueometría 2003. Se muestran los resultados y la metodología empleada para el análisis de los restos cerámicos hallados en el yacimiento de ...
Benítez-Moreno, Pedro +4 more
core +1 more source
From Alkenes to Cyclic Carbonates with a Stable Iron‐Cross‐Bridged Cyclam Catalyst
ChemistrySelect, Volume 9, Issue 29, August 5, 2024.An iron(III) complex with a cross‐bridged cyclam ligand catalyzes the epoxidation of aromatic alkenes and the fixation of CO2 into cyclic carbonates. The one‐pot or stepwise transformation of styrene to styrene carbonate was also achieved (15–24 % GC yield).
Md Bin Yeamin +3 more
wiley +1 more source
Estudios Geologicos, 2007 El yacimiento de Las Higueruelas constituye un escenario singular para el estudio de procesos diagenéticos relacionados con un contexto tafonómico complejo.
E. R. Badiola +2 more
doaj +1 more source
Influencia do alumínio de um podzólico vermelho-amarelo do Acre sobre o crescimento das plantas. [PDF]
, 2014 Made available in DSpace on 2014-04-08T22:30:59Z (GMT). No. of bitstreams: 1 p475.pdf: 6803545 bytes, checksum: 3089b6f9b103821e2ae56de99e4d634d (MD5) Previous issue date: 2001-07 ...
GAMA, J. R. N. F., KIEHL, J. C.
core
Organomagnesia: Reversibly High Carbon Dioxide Uptake by Magnesium Pyrazolates
Advanced Science, Volume 11, Issue 32, August 27, 2024.CO2 uptake of magnesium pyrazolates [Mg(pzR,R)2] to afford [Mg(CO2·pzR,R)2] is instant, quantitative, and reversible, both in solution and in the solid state. The CO2 affinity can be assessed by in situ Fourier‐transform infrared (FTIR)/nuclear magnetic resonance (NMR) spectroscopy, clearly surpassing that of corresponding trivalent and tetravalent ...
Felix Kracht +4 more
wiley +1 more source
Brazilian Journal of Geology, 2017 : High-resolution chemostratigraphic data of carbonates from the Sete Lagoas Formation (Bambuí Group) show large variations on the C, O, and Sr isotope compositions.
Cristian Guacaneme +3 more
doaj +1 more source
Plant‐based meat analogues marketed in Catalonia: evaluation of the nutritional profile
Food Risk Assess Europe, Volume 2, Issue 3, July 2024.Abstract In later years, a growing trend is apparent of vegetarian or vegan diets attributable to a number of causes, among of others, consumers’ concern for animal welfare, climate change and, to a lesser degree, for health‐related issues. On a par to this growth, availability of meat analogues in the market has also been on the rise. In this context,
Judit Costa Català +4 more
wiley +1 more source
Extrações sequenciais de chumbo e zinco em solos de área de mineração e metalurgia de metais pesados
Revista Brasileira de Ciência do Solo, 2011 A extração sequencial permite obter informações mais detalhadas sobre origem, modo de ocorrência, disponibilidade biológica e físico-química, mobilização e transporte dos metais pesados em ambientes naturais.
Larissa Kummer +3 more
doaj +1 more source
Carbonatos en suelos de la zona oriental de Gran Canaria [PDF]
, 2011 The study of three soil profiles in the aridic-xeric zone of Las Palmas island showed that: petrocalcic horizons are formed in pyroclastic episodes; these horizons are generally thick; the xeric zone frequently have polycyclic profiles and their ...
Díaz-Hernández, J. L. +2 more
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Dispositivo para la producción de nanopartículas a través de un proceso con plasma
Revista de Metalurgia, 1999 Este trabajo presenta un dispositivo destinado a la producción de nanopartículas utilizando métodos de vaporización de metales y/o el método de descomposición de compuestos metálicos (óxidos, carbonatos, halógenos) en el plasma del arco transferido o en ...
Joan Bica
doaj +1 more source