Results 111 to 120 of about 118,171 (291)
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract The vision of using microalgae to obtain organic chemicals in a carbon‐neutral manner is intriguing. It promises to produce various substances including biofuels by photosynthesis, without competing with agricultural land. Processes have been established whereby microalgae undergo a growth phase followed by a stress phase, which induces lipid ...
Samira Reuscher +2 more
wiley +1 more source
Les marchés ruraux de bois-énergie au Niger : le mode de développement [PDF]
, 1997 La création des marchés ruraux de bois énergie est officiellement possible au Niger, depuis la promulgation de l'ordonnance 92-037 du 21 août 1992 qui fournit le cadre général dans lequel les populations, légitimées dans la gestion des ressources ...
Housseini, Mato +2 more
core
Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy
Chemistry – A European Journal, EarlyView.Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez +3 more
wiley +1 more source
Mid‐Infrared Spectroscopy and Machine Learning for Chlorogenic Acid Quantification in Coffee
Chemie Ingenieur Technik, EarlyView.Chlorogenic acid (CGA) concentration in coffee was predicted using mid‐infrared (MIR) spectroscopy and a machine learning approach. Forty‐four roasting stages (140–220 °C) plus a green coffee control were analyzed. A multilayer perceptron regressor, trained on preprocessed MIR data, outperformed traditional peak analysis, enabling accurate and ...
Deborah Herdt +6 more
wiley +1 more source
Energy evaluation of de-stress blasting [PDF]
Acta Montanistica Slovaca, 1997 V èlánku sú prezentované teórie koncepcie napäovo-pretvárnych stavov horninového masívu a komponenty uvo¾nenej energie z geofyzikálneho håadiska pri protiotrasových trhacích prácach.
Sedlák Vladimír
doaj
Energy Balancing of Electrochemical Alternatives to the Solvay Process
Chemie Ingenieur Technik, EarlyView.To overcome the CaCl2 and CO2 emissions custom to the conventional Solvay process in soda ash production, electrochemically based alternatives were investigated. In particular, the mass‐ and energy balances for chlor‐alkali electrolysis and bipolar electrodialysis‐based processes are discussed comprehensively in the presented work.
Tom Wenzel +3 more
wiley +1 more source
Etat de l'art et synthèse en matière de prospective. ETHEL. Rapport R1 [PDF]
L'état de l'art prévu (tâche A.1.) du projet ETHEL(1) poursuit deux objectifs :− dresser un bilan synthétique des connaissances acquises en matière de prospective dans les domaines de l'énergie, des transports, de l'habitat, de l'environnement et des ...
Charles Raux +6 more
core
Analyse du Cycle de Vie de la filière hydrogène énergie – Première étape : définition des objectifs et du champ de l'étude [PDF]
, 2007 National audienceDans le contexte actuel de pollution atmosphérique, de démocratisation de l'énergie et d'épuisement des ressources fossiles, le Groupement des Ecoles des Mines (GEM) s'est lancé dans la recherche d'une filière énergétique propre et ...
Aissani, Lynda +5 more
core +3 more sources
A Short‐Cut Design Approach to Evaluate Reboiler Designs in Vapor Recompression Scenarios
Chemie Ingenieur Technik, EarlyView.A short‐cut model framework that incorporates mechanical vapor recompression (MVR) requirements into reboiler design is presented, which is particularly beneficial during early process development with limited data or initial feasibility assessments.
Franziska Lais +2 more
wiley +1 more source
Quantum key distribution implemented with d-level time-bin entangled photons
Nature CommunicationsHigh-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications.
Hao Yu +17 more
doaj +1 more source