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Now showing items 5484-5503 of 10141
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Lignin oxidation and depolymerisation in ionic liquids
(RSC, 2015-09)The depolymerisation of lignin directly in the black liquor was studied, comparing two ionic liquids as extracting solvents (butylimidazolium hydrogen sulphate and triethylammonium hydrogen sulphate), under oxidising ... -
Lignin solvation by ionic liquids: The role of cation
(Elsevier, 2020-01-30)The use of ionic liquids as solvents for the processing of lignocellulosic material has received considerable attention in the last years, since it presents remarkable advantages over previous solvent-based procedures. In ... -
Lignin-Based Polyols with Controlled Microstructure by Cationic Ring Opening Polymerization
(MDPI, 2021-02-22)Lignin-based polyols (LBPs) with controlled microstructure were obtained by cationic ring opening polymerization (CROP) of oxiranes in an organosolv lignin (OL) tetrahydrofuran (THF) solution. The control on the microstructure ... -
Lignin-Derivative Ionic Liquids as Corrosion Inhibitors
(MDPI, 2023-07-21)Corrosion is a significant problem that negatively affects a wide range of structures and buildings, resulting in their premature failure, which causes safety hazards and significant economic loss. For this reason, various ... -
Lignin-ester derivatives as novel thermoplastic materials
(RSC, 2016)[EN] Spruce and eucalyptus lignins isolated by an organosolv process and lauroyl chloride were used as raw material for the synthesis of lignin-ester derivatives. The obtained products presented new and interesting properties ... -
Lignin-Stabilized Doxorubicin Microemulsions: Synthesis, Physical Characterization, and In Vitro Assessments
Rahdar, Abbas; Sargazi, Saman; Barani, Mahmood; Shahraki, Sheida; Sabir, Fakhara; Aboudzadeh, Ali
(MDPI, 2021-02-21)
Encapsulation of the chemotherapy agents within colloidal systems usually improves drug efficiency and decreases its toxicity. In this study, lignin (LGN) (the second most abundant biopolymer next to cellulose on earth) ... -
Lignins from Agroindustrial by-Products as Natural Ingredients for Cosmetics: Chemical Structure and In Vitro Sunscreen and Cytotoxic Activities
; ; Bañales Asurmendi, Jesús María; (MDPI, 2020-03-03)
The growing concern about the environmental impact and human health risk related to the excessive use of synthetic ingredients in cosmetics and topical formulations calls for the exploration of safe and sustainable natural ... -
Lignin–Chitosan Gel Polymer Electrolytes for Stable Zn Electrodeposition
; ; ; ; ; Lizundia Fernández, Erlantz (American Chemical Society, 2023-01)
Electrochemical energy storage technologies offer means to transition toward a decarbonized society and carbon neutrality by 2050. Compared to conventional lithium-ion batteries, aqueous zinc-ion chemistries do not require ... -
Lignocellulosic Biomass as a Source of Raw Materials for the Synthesis of Polyurethanes
(MDPI, 2018-11-06)Precursors have been satisfactorily synthesized from lignocellulosic biomass for later use in the synthesis of polyurethanes resulting in competitive final properties with those of petroleum derived polyurethanes -
Lime mud waste from the paper industry as a partial replacement of cement in mortars used on radiant floor heating systems
Borinaga Treviño, Roque; ; Canales Abaitua, Javier ; Rojí Chandro, Eduardo (Elsevier Ltd., 2021-03-13)
[EN] In order to mitigate climate change, reductions of energy consumption are required on heating systems for residential and non-residential buildings. Despite radiant floor heating systems are being widely used due to ... -
Un "limes" cántabro. La guerra, su administración y su impacto en las fronteras del ámbito pirenaico occidental en un contexto bélico (1635-1643)
(RSC, 2018)La guerra franco-hispana (1635-1659) provocó que sociedades, economías e incluso culturas acostumbradas a intercambios fluidos y fronteras porosas como las del área pirenaica occidental vieran sus relaciones interrumpidas, ... -
Limitaciones arqueológicas o la culpa es del registro
(Arkeogazte: Asociación de Jóvenes Investigadores en Arqueología Prehistórica e Histórica, 2014)... -
Limitations in the energy balance when VGO/aqueous bio-oil mixtures are co-processed in FCC units
; ; ; ; ; Arandes Esteban, José María (Elsevier, 2022-09)
The effect on the energy balance of a FCC unit after co-feeding the aqueous fraction of a bio-oil together with a vacuum gas oil (VGO) has been studied. The simulation program considers the interdependency relationship ... -
Linajes urbanos y Parientes Mayores en Guipúzcoa a finales de la Edad Media (1450-1520)
Aragón Ruano, Álvaro (Universidad Complutense de Madrid, 2012)
[ES]Durante el tránsito de la Edad Media a la Edad Moderna los linajes urbanos y los Parientes Mayores siguieron compartiendo intereses comunes y estrechos lazos sanguíneos y económicos, que les permitieron monopolizar ... -
Linear and Nonlinear Causality between Energy Consumption and Economic Growth: the Case of Mexico 1965-2014
; Ciarreta Antuñano, Aitor; Zárraga Alonso, Ainhoa (MDPI, 2018-03-29)
This paper analyzes the causal link between aggregated and disaggregated levels of energy consumption and economic growth in Mexico between 1965 and 2014, with the presence of structural breaks stemming from the series. ... -
Linear Chromatic Adaptation Transform Based on Delaunay Triangulation
(Hindawi Publishing, 2014)Computer vision algorithms that use color information require color constant images to operate correctly. Color constancy of the images is usually achieved in two steps: first the illuminant is detected and then image is ... -
Linear Chromatic Adaptation Transform Based on Delaunay Triangulation
(Hindawi, 2014-01)Computer vision algorithms that use color information require color constant images to operate correctly. Color constancy of the images is usually achieved in two steps: first the illuminant is detected and then image is ... -
Linear Polyethyleneimine-Based and Metal Organic Frameworks (DUT-67) Composite Hydrogels as Efficient Sorbents for the Removal of Methyl Orange, Copper Ions, and Penicillin V
(MDPI, 2023-11-16)This research explores the integration of DUT-67 metal organic frameworks into polyethyleneimine-based hydrogels to assemble a composite system with enough mechanical strength, pore structure and chemical affinity to work ... -
Linear programming for the analysis and virtual recreation of historical events: the allocation of the artillery during the siege of Bilbao in 1874
(Universitat Politècnica de València, 2021-07)[EN] The current digital technologies development makes it possible to apply new forms of studying historical events considering the geographical point of view. They rely on the location and the relationships ... -
Lines Traced on Mountains: Delimitations and Territorial Disputes in the Western Pyrenees between the Ninth and Eleventh Centuries
(Brill, 2023-10-13)The oldest archival records from Navarre and Aragon come from several monasteries that were founded in the ninth century in the Pyrenean valleys. These documents contain a considerable amount of information about how ...