Results 101 to 110 of about 529,673 (289)
Chemo‐Enzymatic Route for Covalent Cellulose Fiber Dyeing
Chemistry – A European Journal, EarlyView.This work presents a proof of concept for a chemo‐enzymatic approach to the covalent dyeing of cotton fibers. Laccase/TEMPO oxidation introduces aldehyde groups, enabling subsequent reductive amination with amino dyes. Excellent color homogeneity and wash fastness were demonstrated using acid red 33, highlighting the robustness of the approach and its ...
Awilda Maccow +6 more
wiley +1 more source
Vie privée et surveillance ambiante : le droit canadien en chantier
Droit et Cultures, 2013 Ambient surveillance technologies are a new ambush set on the path toward conceptualization of privacy rights in Canada. As they impact the underlying rationale for surveillance, these technologies challenge the traditional theoretical approaches to ...
K. Benyekhlef +2 more
doaj
Od ne-hudby k hudbě. Hudební využití hluku ve 20. století // From non-music to music. Musical use of noise in the 20th century [PDF]
Slovo a Smysl, 2016 The range of sounds available to musicians has grown considerably during the 20th century. The invention of sound recording has made it possible to document any sonic event and to use it in a musical way.
Matěj Kratochvíl
doaj
A second superconducting energy gap of Nb_3Sn observed by breakjunction point-contact spectroscopy
, 2010 We report on investigations of the superconducting energy gap of the A15 superconductor Nb_3Sn by point-contact spectroscopy of breakjunctions. The voltage-dependent differential conductance dI/dV reveals features of a second energy gap besides the ...
Goldacker, W. +3 more
core +2 more sources
The Canadian Journal of Chemical Engineering, EarlyView.The contaminant removal performance of a conventional coagulant, alum, and alternative coagulants, aluminium chlorohydrate (ACH) and ACH + pDADMC, are compared in challenging wastewater treatment conditions (pH >7.8). The interactions of each coagulant with a negatively charged surface are depicted based on quartz crystal microbalance with dissipation ...
Sinan Abi Farraj +3 more
wiley +1 more source
Synthesis of (E)‐β‐SF5‐Styrenes via a Heck Reaction of in situ Generated Vinylsulfur Pentafluoride†
Chinese Journal of Chemistry, EarlyView.A Heck cross‐coupling reaction between aryl(hetero)iodides and in situ generated vinylsulfur pentafluoride is reported. This reaction provides β‐SF5‐styrenes in one‐step as a single (E)‐stereoisomer and tolerates a broad range of functional groups. Comprehensive Summary The synthesis of (E)‐(1‐alken‐1‐yl)pentafluoro‐λ6‐sulfanes, a valuable class of ...
Nicolas DeGrâce +1 more
wiley +1 more source
Canadian Journal of Statistics, EarlyView.Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne +2 more
wiley +1 more source
Caractérisation de l'agroindustrie de production d'amidon aigre de manioc dans le département du Cauca, Colombie [PDF]
, 1997 L'agroindustrie de production à petite échelle d'amidon aigre dans la vallée du Cauca comprend la plus importante concentration de producteurs d'amidon aigre, dont le rendement pour ce produit est le plus élevé en Colombie.
Dufour, Dominique +2 more
core
CHEMKON, EarlyView.Der Einsatz von KI‐gestützten Chatbots wie ChatGPT im Chemieunterricht eröffnet neue Möglichkeiten für das Lehren und Lernen im Fach Chemie. Um Lehrkräfte für einen reflektierten und didaktisch sinnvollen Einsatz von KI‐Chatbots im Chemieunterricht zu qualifizieren und ihnen zu ermöglichen, diese Tools auch mit ihren Lernenden anzuwenden, wurde eine ...
Diana Zeller, Claudia Bohrmann‐Linde
wiley +1 more source
ChemSusChem, EarlyView.An efficient, metal‐free electrochemical three‐component reaction of cinnamic acids, SO2, and amines to access (E)‐β‐styryl sulfonamides is reported. Utilizing graphite electrodes and SO2 stock solutions, this decarboxylative protocol proceeds under mild conditions with high regio‐ and stereoselectivity.
Po‐Chung Chien +2 more
wiley +1 more source