Results 21 to 30 of about 107,473 (289)

THE ENVIROMENTAL PROBLEMS OF THE PIANA DEL SIGNORE (GELA, SICILY) FOR A CORRECT AGRONOMIC, CULTURAL AND LANDSCAPE UPGRADING AND ENHANCEMENT OF THE AREA

EQA, 2017
In Sicily it is witnessing an environmental degradation that can be conducted to the human activity and the already known process of desertification. The present study had as object the c/da Piana del Signore in plain of Gela being an area characterized ...
Davide Puccio, Salvatore Raimondi
doaj   +1 more source

Overcoming Extraction Hurdles and Assessing Biological Activity in a Major Invasive Seaweed Species in Europe, Rugulopteryx okamurae

Marine Drugs
The brown seaweed Rugulopteryx okamurae is a major invasive species in Europe, menacing local ecosystems. The challenge lies in assessing application routes for this biomass, testing different extraction technologies (overnight agitation, mechanical ...
Carolina Paulo, Joana Matos, Cláudia Afonso, Carlos Cardoso   +3 more
doaj   +1 more source

Catalytic and Thermal Cracking of Bio-Oil from Oil-Palm Empty Fruit Bunches, in Batch Reactor

Indonesian Journal of Chemistry, 2020
The world’s potency of fossil-derived petroleum fuels has declined steadily, while its consumption continues to rise ominously. Therefore, several countries have started to develop renewable fuels like bio-oil from biomass.
Santiyo Wibowo, Lisna Efiyanti, Gustan Pari   +2 more
doaj   +1 more source

Graphene and Resin Coated Proppant with Electrically Conductive Properties for In-Situ Modification of Shale Oil

Energies, 2022
Proppant is an essential material in hydraulic fracturing, and it can support artificial fractures for a long time. However, few people have applied proppant and conductive materials in the in-situ modification of shale oil. Here, we developed a graphene
Siyuan Chen, Fanghui Liu, Yang Zhou, Xiuping Lan, Shouzhen Li, Lulu Wang, Quan Xu, Yeqing Li, Yan Jin   +8 more
doaj   +1 more source

Robust Angular Frequency Control of Incommensurate Fractional-Order Permanent Magnet Synchronous Motors via State-Sequential Sliding Mode Control

Mathematics
This paper proposes an innovative state-sequential sliding mode control (SS-SMC) to suppress chaotic behavior and achieve angular frequency control of incommensurate fractional-order permanent magnet synchronous motor (IFOPMSM) systems.
Guo-Hsin Hu, Chia-Wei Ho, Jun-Juh Yan
doaj   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

Diseño y simulación de antenas de microcinta, casi cuadrada, circularmente polarizada para microsatélites: Guía práctica para la simulación con el software HFSS™

Maskay
En este trabajo se presenta una guía práctica para el diseño de una antena de microcinta, circularmente polarizada a derecha (RHCP), usando el software HFSS.
Clara S Franco, Willian Fontella, Marco V. Heckler T., Edson Schlosser, Marco F Lara M, Rubén D. León V., Hector Moya, José J. Freire, Alexis Fabricio Tinoco Salazar   +8 more
doaj   +1 more source

Liquefaction of Biomass and Upgrading of Bio-Oil: A Review

Molecules, 2019
The liquefaction of biomass is an important technology to converse the biomass into valuable biofuel. The common technologies for liquefaction of biomass are indirect liquefaction and direct liquefaction.
Shiqiu Zhang, Xue Yang, Haiqing Zhang, Chunli Chu, Kui Zheng, Meiting Ju, Le Liu   +6 more
doaj   +1 more source

Biogas from Anaerobic Digestion: Power Generation or Biomethane Production?

Energies, 2020
Biogas is a fuel obtained from organic waste fermentation and can be an interesting solution for producing electric energy, heat and fuel. Recently, many European countries have incentivized the production of biomethane to be injected into natural gas ...
Gianluca Caposciutti, Andrea Baccioli, Lorenzo Ferrari, Umberto Desideri   +3 more
doaj   +1 more source