Results 171 to 180 of about 4,153 (287)

Chemical Kinetics of 2‐, 4‐, and 2,4‐Seleno‐Uracils at Low Temperatures: Tautomerizations and Rotamerizations on Inert Matrices

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT In the interstellar medium, chemical reactions proceed under conditions vastly different to those on Earth; these include extremely low temperatures and densities and take place in the gas phase and on water–ice grains. Understanding the energetics and more importantly the kinetics of such reactions is of relevance to the consequences on how ...
Judith Wurmel, John M. Simmie
wiley   +1 more source

Nonlinear stability and vibration of flexible spacecraft solar arrays under thermally induced flutter during the penumbra phase. [PDF]

Sci Rep
Motaharifard O, Daneshjou K, Bakhtiari M.   +2 more
europepmc   +1 more source

NiCo2O4−PMA With Subnanoscale Dual‐Domain Sites Enables Near‐Unity Acetate Selectivity in Photoelectrochemical Methane Oxidative Coupling

National Materials, EarlyView.
This study addresses the challenge of low selectivity in methane partial oxidation to higher‐value C2‐oxygenates by designing a subnanoscale dual‐domain catalyst via cluster–nuclei co‐assembly. Structural characterizations confirm that NiCo−PMA SNSs feature a ∼1.2‐nm‐thick periodic (−PMAs−NiCo−)n heterostructure.
Siyang Nie, Xun Wang
wiley   +1 more source

Efficient distribution of tuned mass dampers for seismic control in regular and irregular multi-story steel buildings. [PDF]

Sci Rep
Shabib MM, Farag HM, Khalifa YA, Zahran MS.   +3 more
europepmc   +1 more source

Thermoplastic‐Resin Transfer Molding Technology: Development and Challenges Toward Industrialization

Polymer Composites, EarlyView.
Illustration of the key aspects involved in the manufacture of thermoplastic composites by T‐RTM highlighting the relationships between raw materials, resin mixing strategies, polymerization parameters, and processing equipment ranging from laboratory to industrial scale. ABSTRACT Driven by increasingly stringent international environmental regulations,
Filipe P. Martins, Paulo S. Lima, Ricardo Torcato, Laura Santos, J. M. Oliveira   +4 more
wiley   +1 more source

Dynamic coupling effects of geometric eccentricity on multi-stage gear transmission via stiffness modulation and error excitation. [PDF]

Sci Rep
Lu W, Liang G, Du Z, Huang W, Zhao X.
europepmc   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Vibration behavior analysis of reamers based on drill string dynamics. [PDF]

Sci Rep
Fusheng Y, Yuchun K, Bin L, Qianwen C, Ming S.   +4 more
europepmc   +1 more source

From Growing Conditions to Composite Performance: Acid‐Engineered Algerian Sisal Fibers for Sustainable Bio‐Epoxy Composites

Polymer Composites, EarlyView.
High‐Performance Sustainable Ski Core Bio‐Composite Derived from Bio‐Epoxy and Sisal Sibers Systems. ABSTRACT In pursuit of sustainable and high‐performance materials, this work investigates the potential of Algerian sisal fibers as renewable reinforcements in bio‐epoxy composites.
M. A. Kacem, R. Halimi, O. Duncan, T. Allen, M. Bodaghi   +4 more
wiley   +1 more source

Research on dynamic stiffness match form of indirect fastener based on rail high-frequency wear characteristics. [PDF]

Sci Rep
Wang X, Wei K, Pu Q, Liu Z, Li G, Wang P.   +5 more
europepmc   +1 more source