Results 141 to 150 of about 134,814 (297)

Flame retardant spandex type polyurethanes [PDF]

, 1978
Flame retardant elastomeric compositions were developed, comprised of: (1) spandex type polyurethane having incorporated into the polymer chain, halogen containing polyols; (2) conventional spandex type polyurethanes in physical admixture flame retardant
Howarth, J. T., Massucco, A. A., Sheth, S., Sidman, K. R.   +3 more
core   +1 more source

Ionogel Actuators: A Review

SmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao, Dongqing He, Yuanxiang Zhao, Dongdong Jin, Jiaheng Zhang, Wei Wang   +5 more
wiley   +1 more source

Anode‐Free Cell Concepts: Critical Analysis and Development of Practical Batteries

Small, EarlyView.
Anode‐free batteries (AFBs) are considered one of the most promising battery technologies due to their potential advantages in terms of energy density, manufacturing ease, and sustainability. This Perspective article provides a comprehensive overview of the latest advances in AFBs with liquid and solid electrolytes, a critical analysis of cell ...
Svetlana Menkin, Elixabete Ayerbe, Anna B. Gunnarsdóttir, Diego del Olmo, Pedro López‐Aranguren, Amna Rafique, Jokin Rikarte, Susana Chauque, Xiaorui Shi, Olivier Guillon, Robert Dominko, Philipp Schlee, Martin Finsterbusch, Andriy Kvasha, Dina Fattakhova‐Rohlfing   +14 more
wiley   +1 more source

Enzymatic one-step ring contraction for quinolone biosynthesis. [PDF]

, 2018
The 6,6-quinolone scaffolds on which viridicatin-type fungal alkaloids are built are frequently found in metabolites that display useful biological activities.
Champagne, Pier Alexandre, Hara, Kodai, Hashimoto, Hiroshi, Hirayama, Yuichiro, Houk, Kendall N, Kishimoto, Shinji, Tang, Yi, Watanabe, Kenji   +7 more
core  

Occupational Contact Urticaria, Protein Contact Dermatitis and Concomitant Airway Diseases in the Finnish Register of Occupational Diseases in 2005–2020: Main Causes and Occupations at Risk

Contact Dermatitis, EarlyView.
This Finnish registry study shows that concomitant occupational asthma and rhinitis are common in patients with occupational contact urticaria or protein contact dermatitis, often sharing the same exposure. When evaluating occupational immediate allergy, both skin and airway symptoms should be considered.
Ville Ojanen, Liisa Airaksinen, Hille Suojalehto, Kirsi Koskela, Maria Pesonen   +4 more
wiley   +1 more source

Effect of Matrix Properties on Quasi‐Static and Fatigue Properties of Thermosetting Polyurethane and Its GFRP Composites

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT In this study, the influence of resin cross‐link density on thermomechanical properties and fatigue behavior of polyurethane resins and glass fiber‐reinforced polyurethane (PUR‐GFRP) composites was investigated. This material is a candidate for renewable energy applications like rotor blades in wind turbines.
Martin Demleitner, Daniel Raps, Sarah Mäker, Qi Chen, Alexander Brückner, Holger Ruckdäschel   +5 more
wiley   +1 more source

Triplet 4‐Nitrenemethyl‐Pyridine‐N‐Oxide: A Model Alkyl Nitrene Isolated in Cryogenic Matrices

Journal of Physical Organic Chemistry, Volume 39, Issue 5, May 2026.
The simplest triplet alkyl nitrene bearing a pyridine‐N‐oxide moiety was generated by direct irradiation (λ > 350 nm) of the corresponding azide in an Ar matrix at 15 K. Quantum tunneling 1,2‐H shift to the corresponding imine is thermodynamically favorable but does not occur due to a high‐energy barrier (~36 kcal mol−1).
Cláudio M. Nunes, A. J. Lopes Jesus, Tatiana Caneca, Gemma Aragay, Pablo Ballester, Rui Fausto   +5 more
wiley   +1 more source

Sprayable low density ablator and application process [PDF]

, 1978
A sprayable, low density ablative composition is described consisting esentially of: (1) 100 parts by weight of a mixture of 25-65% by weight of phenolic microballoons, 0-20% by weight of glass microballoons, 4-10% by weight of glass fibers, 25-45% by ...
Brown, E. L., Carter, J. M., Hill, W. E., King, H. M., Schuerer, P. H., Sharpe, M. H., Simpson, W. G., Webb, D. D.   +7 more
core   +1 more source

Effect of Metal Oxide Fillers on the Thermo‐Mechanical and Physical Properties of Kenaf–Carbon Fiber Epoxy Hybrid Composites

SPE Polymers, Volume 7, Issue 2, April 2026.
Thermo‐mechanical enhancement of Kenaf/carbon epoxy composites. ABSTRACT This study analyzes the effect of MgO, Al2O3, and TiO2 metal oxide fillers on the physico‐mechanical and thermal behavior of kenaf/carbon fiber‐reinforced epoxy hybrid composites.
Ishrak Ibn Zahid, Titu Nath, Nayan Sur, Arup Kumar Debnath, Md. Abdul Hasib   +4 more
wiley   +1 more source

Do plantar calcaneal spurs make the plantar aponeurosis enthesis stronger? A biomechanical analysis

Journal of Anatomy, Volume 248, Issue 4, Page 591-597, April 2026.
Novel testing set up for determining enthesial avulsion parameters. Donor calcanei were dissected to isolate the central band of the plantar fascia, and mounted in a custom 3D‐printed rig (Fig A, B, C) for uniaxial tensile testing of the plantar fascia enthesis (Fig D). This study demonstrated no significant differences in the avulsion parameters, Fmax
Joanna Tomlinson, Kai Chun Li, Johann Zwirner   +2 more
wiley   +1 more source