Results 51 to 60 of about 3,229,380 (244)

Recherches sur la structure et les propriétés des composés phénoliques polymérisés des vins rouges

open access: yesOENO One, 1974
Les tanins du vin sont un mélange de polymères de flavanes plus ou moins condensés appelés flavolanes dont la structure varie suivant l'âge et l'état physico-chimique du vin.
Yves GLORIES
doaj   +1 more source

From batch to continuous extractive distillation using thermodynamic insight: class 1.0-2 case B [PDF]

open access: yes, 2011
A systematic feasibility analysis is presented for the separation azeotropic mixtures by batch and continuous extractive distillation. Based on batch feasibility knowledge, batch and continuous separation feasibility is studied under reflux ratio and ...
Benyounes, Hassiba   +2 more
core  

Clean synthesis of adipic acid from cyclohexene in microemulsions with stearyl dimethyl benzyl ammonium chloride as surfactant: From the laboratory to bench scale [PDF]

open access: yes, 2012
Adipic acid, HOOC(CH2)4COOH, is a white crystalline solid used primarily in the manufacture of nylon-6,6 polyamide. In industry, adipic acid is mainly produced by oxidation of cyclohexane with air and nitric acidfollowing a homogeneous two-step route ...
Cognet, Patrick   +3 more
core   +3 more sources

Device Performance of Emerging Photovoltaic Materials (Version 6)

open access: yesAdvanced Energy Materials, EarlyView.
Efficiency of single junction perovskite (circles), organic (hexagons), dye sensitized (pentagons), kesterite (diamonds), Sb2Se3 (right triangle), and AgBiS2 (left triangles) solar cells at emerging‐pv.org over the last decade. ABSTRACT This 6th annual Emerging PV Report surveys peer‐reviewed advances since August 2024 across perovskite, organic ...
Osbel Almora   +29 more
wiley   +1 more source

Photochemical UV/TiO2 treatment of olive mill wastewater (OMW) [PDF]

open access: yes, 2008
Olive mill wastewater (OMW) was treated by photocatalysis using TiO2 under UV irradiation on the laboratory scale. The chemical oxygen demand, the coloration at 330 nm, and the level of phenols all showed decreases which, after a 24-h treatment, reached ...
Bailly, Jean-René   +7 more
core   +3 more sources

Persistent Mono‐Oxo Bonding with Protactinium(V) Revealed in Highly Acidic Chloride Solutions

open access: yesAngewandte Chemie International Edition, EarlyView.
Protactinium(V) defies expectations. Its elusive mono‐oxo bond was revealed through a combination of extended X‐ray absorption fine structure (EXAFS) and X‐ray absorption near‐edge structure (XANES) analyses, as well as quantum chemical calculations. This bond persists even in 12 M HCl.
Melody Maloubier   +9 more
wiley   +1 more source

Generalised model for heteroazeotropic batch distillation with variable decanter hold-up [PDF]

open access: yes, 2013
A general model of batch heteroazeotropic distillation is proposed. Both liquid phases present in the decanter can be refluxed or withdrawn as distillate, their hold-up can be increased, decreased or kept constant, as well. By assuming maximal separation,
Gerbaud, Vincent   +2 more
core   +2 more sources

Spermidine Reproduces the Anti‐Inflammatory Effects of Intermittent Fasting and Prevents Urate and Calcium Pyrophosphate Crystal‐Induced Inflammation

open access: yesArthritis &Rheumatology, EarlyView.
Objective Gout caused by the formation of monosodium urate (MSU) crystals and calcium pyrophosphate (CPP) deposition disease are two major types of microcrystalline pathologies in adults. They are responsible for recurrent flares that rely on interleukin (IL) 1β via activation of the NLRP3 inflammasome.
Chinh Nghia Pham   +15 more
wiley   +1 more source

Caractérisations quantitative et qualitative des performances laitières des troupeaux bovins menés en hors sol dans une zone littorale semi-aride (Tunisie)

open access: yesRevue Marocaine des Sciences Agronomiques et Vétérinaires, 2016
Cet article vise le cheptel bovin laitier chez les éleveurs adhérents au programme de contrôle laitier mené par l’Office d’Élevage et des Pâturages (OEP).
Amani HOUCHATI   +2 more
doaj  

Préparation et méthode de contrôle d'un anthelminthique vétérinaire : l'arséniate d'étain

open access: yesRevue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1972
cf. fichier PDF de l'article.
G. Gras, Chhay Hancheng, F. Fauran
doaj   +1 more source

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