Results 141 to 150 of about 220,226 (305)

Chords, tangents and the Leibniz notation [PDF]

In this article I continue my quest for “understanding the calculus” 1,2 by looking at a practical approach to the notion of a tangent and linking it to the Leibniz notation dy/dx in a meaningful way.
Tall, David
core  

A Chiral Saddle‐Shaped Nanographene With Two Heptagon‐Embedded [4]Helicenes

Angewandte Chemie International Edition, EarlyView.
We present a novel synthetic strategy toward a chiral saddle‐shaped nanographene (cSNG) via a two‐step oxidation of a prochiral anthracene precursor. The Scholl‐type oxidation first yields a key intermediate with sp3‐defect heptagons, and subsequent oxidative dehydrogenation affords fully conjugated cSNG.
Felix Trautner, Boris Borrisov, Philipp Royla, Hongqing Zhao, Hartmut Komber, Li Wan, Evgenia Dmitrieva, Ji Ma, Jan J. Weigand, Qun Yang, Xinliang Feng, Wenhui Niu   +11 more
wiley   +1 more source

LOS! Highlight Talk: Fostering Open Science practices in Leibniz

This event is a part of LOS! (Leibniz Open Science!), the event series of the Leibniz Strategy Forum on Open Science. The talk was held online, on June 5, 2023.What is Open Science and which practices does it entail?
Scherp, Guido
core   +1 more source

Crystal structure of tris[(diphenylphosphino)methylene)- diphenylphosphoranylmethyl]yttrium diethyl ether monosolvate, [Y{P(C6H5)2CHP(C6H5)2CH2}3] · ( C 2H5)2O

Zeitschrift für Kristallographie - New Crystal Structures, 2005
Spannenberg A., Rosenthal Leibniz U.
doaj   +1 more source

Schloss Dagstuhl - Jahresbericht / Annual Report 2023

Schloss Dagstuhl - Leibniz-Zentrum für Informatik setzt sich zum Ziel, Informatikforschung auf Weltklasseniveau zu unterstuetzen und Wissenschaftsseminare zu beherbergen, in denen neue Ideen untersucht und Probleme diskutiert werden, um Grundsteine für ...
Schloss Dagstuhl - Leibniz-Zentrum für Informatik
core   +1 more source

Changing a Winning Team—Replacement of Brominated Flame Retardant and Antimony Trioxide in Acrylonitrile–Butadiene–Styrene

Journal of Applied Polymer Science, EarlyView.
This comprehensive study investigates reducing the amount of brominated flame retardant (Br) and/or antimony trioxide (ATO) in acrylonitrile–butadiene–styrene. Therefore, condensed‐phase flame‐retardant mechanisms are introduced into the flame‐inhibition system.
Sebastian M. Goller, Bernhard Schartel, Simone Krüger   +2 more
wiley   +1 more source

Tooth eruption status and bite force determine dental microwear texture gradients in albino rats (Rattus norvegicus forma domestica)

The Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) is widely applied for inferring diet in vertebrates. Besides diet and ingesta properties, factors like wear stage and bite force may affect microwear formation, potentially leading to tooth position‐specific microwear patterns.
Daniela E. Winkler, Isabelle Bernetière, Christine Böhmer   +2 more
wiley   +1 more source

Mandible composition and properties in two selected praying mantises (Insecta, Mantodea)

The Anatomical Record, EarlyView.
Abstract Insects process their food with their cuticle‐based mouthparts. These feeding structures reflect their diversity and can, in some cases, showcase adaptations in material composition, mechanical properties, and shape to suit their specific dietary preferences.
Malo Roze, Stanislav N. Gorb, Timo Zeimet, Wencke Krings   +3 more
wiley   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part II Deriving instrument‐specific correction equations for meta‐analyses using published data

The Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has emerged as a valuable method for investigating the feeding ecology of vertebrates. Over the past decade, three‐dimensional topographic data from microscopic regions of tooth surfaces have been collected, and surface texture parameters have been published for both extant and fossil species.
Mugino O. Kubo, T. Kubo, Ellen Schulz‐Kornas, T. M. Kaiser, Daniela E. Winkler   +4 more
wiley   +1 more source

Generic microfluidic platform for digital droplet-based bioassays. [PDF]

RSC Adv
Böke JS, Reuter C, Kielpinski M, Reichert A, Prinz I, Horner D, Prinz A, Bichler F, Aichinger R, Rettenbacher A, Bauer G, Bauer M, Pahlow S, Weber K, Henkel T.   +14 more
europepmc   +1 more source