Results 21 to 30 of about 100 (98)

Organocatalytic Formal (3+2+1)‐Cycloaddition of Allenoates, Michael Acceptors, and Carbaldehydes

Chemistry – A European Journal, EarlyView.
The use of secondary amine Lewis base organocatalysts allows for the unprecedented activation of allenoates for formal (3+2+1)‐cycloadditions with Michael acceptors and aromatic carbaldehydes. ABSTRACT Employing secondary amines as covalently interacting Lewis basic organocatalysts allows for the activation of electron‐deficient allenes (allenoates ...
David Naderer, Alexander Pötscher, Katharina Eder, Uwe Monkowius, Markus Himmelsbach, Mario Waser   +5 more
wiley   +1 more source

New Insights into Poly(Dichlorophosphazene) Synthesis via Me3Si─N═PCl3 Polymerization: An Experimental and Theoretical Study

Chemistry – A European Journal, EarlyView.
Poly(dichlorophosphazene) synthesis via Me3Si─N═PCl3 polymerization was reinvestigated using quantum chemical calculations and experiments. A cationic initiator (Ph3PCl2) enables ambient‐temperature polymerization through chloride‐catalyzed cationic pathways involving dissociation, nucleophilic chloride attack, and chain‐propagating species formation ...
Cornelius Knuth, Paul Strasser, Carmen Hoth, Joerg Harloff, Thomas Eickner, Ian Teasdale, Axel Schulz   +6 more
wiley   +1 more source

Restrict for Health or for Thinness? Liking but Not Approach Bias Differentiates Orthorexic Eating Behavior From Anorexia Nervosa in Responses to High‐Caloric Healthy vs. High‐Caloric Unhealthy Foods

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Individuals with high levels of orthorexic eating behavior (OEB) show a (pathological) fixation on healthy eating. Shared characteristics of OEB with individuals with anorexia nervosa (AN) raised debate over whether orthorexia nervosa constitutes a distinct disorder. Distinctions may lie in preference for and approach behavior toward
Hannah van Alebeek, Mareike Röttger, Jana Strahler, Katharina Eichin, Isabella Forwick, Jens Blechert, Ulrich Voderholzer, Julia Reichenberger   +7 more
wiley   +1 more source

Isotelluroureas for Asymmetric C1 Ammonium Enolate Reactions

European Journal of Organic Chemistry, EarlyView.
Chiral isotelluroureas are powerful catalysts for a variety of C─C bond forming C1 ammonium enolate transformations. Isotelluroureas (ITeUs) have recently been introduced as a novel class of highly nucleophilic Lewis base catalysts. Herein, we systematically screened them for their potential to facilitate C1 ammonium enolate transformations and ...
Fereshteh Khorasani, Lotte Stockhammer, Magdalena Piringer, Mario Waser   +3 more
wiley   +1 more source

Materials and Music: Selective Imperfection as a Generative Framework for Analysis, Creativity and Discovery

Interdisciplinary Materials, EarlyView.
Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
wiley   +1 more source

Posterior cruciate ligament involvement leads to inferior outcomes in multiligament knee injuries involving the medial collateral ligament: A systematic review and meta‐analysis

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Multiligament knee injuries (MLKIs) involving the medial collateral ligament (MCL) present unique challenges in surgical management and postoperative rehabilitation. This systematic review and meta‐analysis aimed to evaluate postoperative patient‐reported outcomes in patients with MCL‐involved MLKIs, with a minimum follow‐up of 2 years.
Collin Donald Roy Hunter, Judith Sternbauer, Christian Kammerlander, Johannes Grillari, Ortrun Neuper, Justin J. Ernat, Antonio Klasan   +6 more
wiley   +1 more source

Posterolateral tibial plateau fractures are associated with anterolateral complex injuries of the knee in primary ACL injury

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Posterolateral tibial plateau fractures (PLTFs) have been increasingly studied due to their association with soft tissue injuries around the knee. This prospective study aimed to determine whether the presence of PLTFs is associated with soft tissue injuries around the knee and correlates with an increased preoperative quantitative ...
Lukas Willinger, Philipp Wilhelm Winkler, Cornelius Packheiser, Andrea Achtnich, Sebastian Siebenlist, Armin Runer   +5 more
wiley   +1 more source

Investigating Mixed‐Integer Programming Approaches for the p$$ p $$‐α$$ \alpha $$‐Closest‐Center Problem

Networks, EarlyView.
ABSTRACT In this work, we introduce and study the p$$ p $$‐α$$ \alpha $$‐closest‐center problem (pα$$ p\alpha $$CCP), which is a generalization of the p$$ p $$‐second‐center problem, a recently emerged variant of the classical (discrete) p‐center problem.
Elisabeth Gaar, Sara Joosten, Markus Sinnl   +2 more
wiley   +1 more source

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source

What Management Control Practices Do Electric Utilities Rely on When It Comes to Fostering the Social Pillar of Sustainability? A Comparative Analysis of the European Union and the United States

Sustainable Development, EarlyView.
ABSTRACT Electric utilities are expected to implement measures to improve their performance in all three dimensions of sustainable development—environmental, social, and economic. While several studies have investigated the environmental dimension, measures related to the social pillar have hardly been researched to date.
Shekerta Aliu, Albert Anton Traxler, Dorothea Greiling   +2 more
wiley   +1 more source