Results 11 to 20 of about 142,788 (267)

Grape Stalks Valorization towards Circular Economy: A Cascade Biorefinery Strategy. [PDF]

open access: yesChemSusChem
A cascade protocol for grape stalks valorization has been proposed, characterized by a multidisciplinary strategy using unconventional techniques and subcritical water as a green solvent, where physical/chemical treatments synergistically interact with biological treatments to obtain added value products from all the biomass components.
Valle C   +11 more
europepmc   +2 more sources

The impact of green marketing on collective behaviour: Experimental evidence from the sports industry

open access: yesBusiness Strategy and the Environment, Volume 32, Issue 8, Page 5349-5367, December 2023., 2023
Abstract This paper aims to investigate how supporters perceive and react to environmental messages that call for reducing the environmental impact of sporting events. Based on prospect theory, we randomly provided 1423 supporters attending football events in Europe with (1) a negative (perceived loss for supporters), (2) a neutral (no perceived gain ...
Gianluca Gionfriddo   +3 more
wiley   +1 more source

Second‐Generation Total Synthesis of the Pigment Aurantricholone

open access: yesEuropean Journal of Organic Chemistry, Volume 26, Issue 42, November 7, 2023., 2023
Previously, 6,6‐dimethoxy‐6,7‐dihydrobenzocyclohepten‐5‐ones (“ketoketals”) gained by ring‐closing metatheses (“RCMs”) gave 6‐hydroxybenzocyclohepten‐5‐ones (“benzotropolones”) by hydrolyses with 10 equiv. of hot TsOH. Now, an RCM‐based ketoketal allowed to reach the benzotropolone aurantricholone by total synthesis for the second time and to avoid a ...
Philip Koblischek, Reinhard Brückner
wiley   +1 more source

Experimental constraints on the volatility of germanium, zinc, and lithium in Martian basalts and the role of degassing in alteration of surface minerals

open access: yesMeteoritics &Planetary Science, Volume 58, Issue 9, Page 1183-1210, September 2023., 2023
Abstract The surface of Mars is enriched in Cl and S which is linked to volcanic activity and degassing. Similarly, elevated Ge and Zn levels in Gale crater sedimentary bedrock indicate a magmatic source for these elements. To constrain the relative effects of Cl and S on the outgassing of these trace metals and chemical characteristics of primary ...
Alexander Rogaski   +6 more
wiley   +1 more source

Microwave‐Assisted Reductive Amination of Aldehydes and Ketones Over Rhodium‐Based Heterogeneous Catalysts

open access: yesChemPlusChem, Volume 88, Issue 3, March 2023., 2023
Different natural‐occurring aldehydes and ketones have been selected as substrates for MW‐assisted reductive amination over commercial and homemade Rh supported catalysts. MW combined with Rh catalysts allowed 98.2 % yield in benzylamine from benzaldehyde (80 °C, 10 bar of H2, 1 h) and 43.3 % yield in phenylethylamine from acetophenone (80 °C, 5 bar of
Fabio Bucciol   +5 more
wiley   +1 more source

O efeito facilitatório do óxido nítrico sobre a transmissão neuromuscular de preparações nervo frênico- diafragma isolado de ratos é Ca++ dependente - DOI: 10.4025/actascibiolsci.v26i4.1528

open access: yesActa Scientiarum: Biological Sciences, 2008
A pesquisa foi conduzida para verificar se os efeitos neuromusculares induzidos por óxido nítrico (NO) poderiam depender dos níveis extracelulares de Ca++.
Heraldo Esheveria Borges   +1 more
doaj   +1 more source

Meta-análise da digestibilidade ileal de aminoácidos e minerais em suínos alimentados com dietas contendo enzimas

open access: yesPesquisa Agropecuária Brasileira, 2011
O objetivo deste trabalho foi avaliar, por meio da meta-análise, o efeito da fitase e da xilanase sobre a digestibilidade ileal aparente (DIa) de aminoácidos, cálcio e fósforo, em suínos em fase de crescimento.
Cheila Roberta Lehnen   +5 more
doaj   +1 more source

Hipoparatiroidismo e pseudohipoparatiroidismo [PDF]

open access: yes, 2006
The principal function of the parathyroid hormone (PTH) is maintenance of calcium plasmatic levels, withdrawing the calcium from bone tissue, reabsorbing it from the glomerular filtrate, and indirectly increasing its intestinal absorption by stimulating ...
Borba, Victoria Zeghbi Cochenski   +4 more
core   +3 more sources

Geoquímica e geocronologia dos Gnaisses Piratini: magmatismo cálcio-alcalino médio a alto-K de 784 Ma (U-Pb SHRIMP) no SE do Cinturão Dom Feliciano (RS, Brasil)

open access: yesPesquisas em Geociências, 2019
Diversas ocorrências de xenólitos metamórficos em granitoides neoproterozoicos são reconhecidas no Domínio Oriental do Cinturão Dom Feliciano (Rio Grande do Sul, Brasil).
Guilherme Baldissera Tambara   +6 more
semanticscholar   +1 more source

Ameliorative potential of Vernonia cinerea on chronic constriction injury of sciatic nerve induced neuropathic pain in rats

open access: yesAnais da Academia Brasileira de Ciências, 2014
The aim of the present study is to investigate the ameliorative potential of ethanolic extract of whole plant of Vernonia cinerea in the chronic constriction injury (CCI) of sciatic nerve induced neuropathic pain in rats.
VENKATA R.K. THIAGARAJAN   +3 more
doaj   +1 more source

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