Results 41 to 50 of about 52,605 (330)
Macroporous silicon membranes as electron and x-ray transmissive windows [PDF]
, 2004 Macroporous silicon membranes are fabricated whose pores are terminated with 60 nm thin silicon dioxide shells. The transmission of electrons with energies of 5 kV-25 kV through these membranes was investigated reaching a maximum of 22% for 25 kV ...
Gösele, U. +3 more
core +1 more source
Acherontiscus caledoniae: the earliest heterodont and durophagous tetrapod [PDF]
Royal Society Open Science, 2019 The enigmatic tetrapod Acherontiscus caledoniae from the Pendleian stage of the Early Carboniferous shows heterodontous and durophagous teeth, representing the earliest known examples of significant adaptations in tetrapod dental morphology. Tetrapods of
Jennifer A. Clack +5 more
doaj +1 more source
Role of Genome in the Formation of Conical Retroviral Shells
, 2016 Human immunodeficiency virus (HIV) capsid proteins spontaneously assemble around the genome into a protective protein shell called the capsid, which can take on a variety of shapes broadly classified as conical, cylindrical and irregular. The majority of
Erdemci-Tandogan, Gonca +3 more
core +2 more sources
Experimental and Computational Crushing Behaviour of Laminated Composite Shells [PDF]
, 2000 This thesis presents the effect of structural geometry, reinforcement type and hybridisation on the crushing behaviour, energy absorption, failure mechanism and failure mode of cylindrical, conical and compound composite shell.
Saad, Elsadig Mahdi Ahmed
core
Rim curvature anomaly in thin conical sheets revisited
, 2011 This paper revisits one of the puzzling behaviors in a developable cone (d-cone), the shape obtained by pushing a thin sheet into a circular container of radius $ R $ by a distance $ \eta $ [E. Cerda, S. Chaieb, F. Melo, and L.
A. Love +10 more
core +1 more source
Advanced Functional Materials, EarlyView.Gold bipyramids can act as efficient plasmonic nanoheaters, but they often reshape during laser heating. This study shows that oxygen nanobubbles drive oxidative etching and that surface ligands control stability. CTAB‐ and citrate‐coated particles blunt and lose optical performance, whereas polystyrene sulfonate preserves shape and heating by ...
Irene López‐Sicilia +7 more
wiley +1 more source
BMC Biology, 2021 Background A major goal of evolutionary developmental biology is to discover general models and mechanisms that create the phenotypes of organisms. However, universal models of such fundamental growth and form are rare, presumably due to the limited ...
Alistair R. Evans +9 more
doaj +1 more source
Why enveloped viruses need cores -- the contribution of a nucleocapsid core to viral budding
, 2017 During the alphavirus lifecycle, a nucleocapsid core buds through the cell membrane to acquire an outer envelope of lipid membrane and viral glycoproteins. However, the presence of a nucleocapsid core is not required for assembly of infectious particles.
Hagan, Michael F. +2 more
core +1 more source
Collapsing and Expanding Cylindrically Symmetric Fields with Ligh-tlike Wave-Fronts in General Relativity [PDF]
, 2002 The dynamics of collapsing and expanding cylindrically symmetric gravitational and matter fields with lightlike wave-fronts is studied in General Relativity, using the Barrabes-Israel method.
Pereira, Paulo R. C. T., Wang, A. Z.
core +2 more sources
Multiplex Modular Nanorobotic Systems with Catalytic Activity under Magnetic Navigation
Advanced Functional Materials, EarlyView.We present modular nanorobots composed of a magnetic propulsion module and different extension modules carrying functional activities, assembled via DNA base pairing. The system integrates propulsion, optical tracking, enzymatic catalysis, and cell docking in a programmable manner.
Voichita Mihali +7 more
wiley +1 more source