Results 101 to 110 of about 44,428 (278)
Tip streaming from drops flowing in a spiral microchannel
, 2008 This fluid dynamics video shows drops of water being transported by a mean flow of oil, in a microchannel shaped as a logarithmic spiral. The channel shape means that the drops are submitted to an increasing shear and elongation as they flow nearer to ...
Baroud, Charles N., Molesin, Simon
core
Advanced Science, EarlyView.Gecko like multi directional high power magneto mechano electric energy harvester (MME EH) for self powered, hundred meter scale LoRa communication. Inspired by the symmetric and flexible limb motion of geckos, the biomimetic harvester enables coordinated bending twisting responses to weak, low frequency (50/60 Hz) stray magnetic fields from power ...
Shitong Fang +13 more
wiley +1 more source
Remarkable curves as images of circles and lines under conformal maps
Дифференциальная геометрия многообразий фигур, 2018 We consider images of a family of circles under some conformal maps. It is shown that the images of these lines are remarkable curves, such as cardioid, lemniscate of Bernoulli, logarithmic spiral.
A. Kochina
doaj
On the Spiral Structure of the Milky Way Galaxy
, 2010 We consider the possible pattern of the overall spiral structure of the Galaxy, using data on the distribution of neutral (atomic), molecular, and ionized hydrogen, on the base of the hypothesis of the spiral structure being symmetric, i.e.
A. Cabrera-Lavers +48 more
core +1 more source
Enhanced Intracellular Stability and Translation Efficiency of mRNA Drugs by a 2‐arm mRNA Platform
Advanced Science, EarlyView.We constructed a 2‐arm mRNA, characterized by a unique topology formed through the dimerization of two mRNA 3’ tails. The 2‐arm mRNA improves 3’ tail stability and resistance to nuclease degradation, resulting in an intracellular half‐life of up to 65 h. This method substantially enhances the translation capacity of mRNA drugs.
Xucong Teng +5 more
wiley +1 more source
MATHEMATICAL CHARACTERIZATION OF THE NATURAL SPIRAL OF BEAUTY, HARMONY AND BALANCE
Journal of Industrial Design and Engineering Graphics, 2014 This paper aims to reveal one aspect of the natural implications of mathematics. Specifically, based on the logarithmic spiral and natural logarithm, based on the number e, extending the idea of the natural spiral.
STANCIU Virgil, PAVEL Cristina
doaj
Wave Propagation in 1-D Spiral geometry [PDF]
, 2014 In this article, we investigate the wave equation in spiral geometry and study the modes of vibrations of a one-dimensional (1-D) string in spiral shape.
Chatterjee, Deep, Nayak, Rajesh K.
core
Advanced Science, EarlyView.A catalytic allosteric DNAzyme assay (SMART) is developed by engineering DNAzyme into a unimolecular biosensor, enabling highly sensitive and multiplex detection of small molecules and nucleic acids. SMART enables extraction‐free, one‐pot, one‐step, isothermal, and cost‐effective detection of biological markers, achieving >95% accuracy for rapid ...
Yanzhe Shen +12 more
wiley +1 more source
Curves in Archeology: Computing the Volume of a Greek Vase
MetrologyThe concept of dynamic symmetry in art and extensive measurements on Greek vases suggest that a vase and its parts can be inscribed into similar rectangles, with all rectangles having the same ratio of lengths of their side.
Siddhant Shah +2 more
doaj +1 more source
Improved Direct Ink Writing of Liquid Metal Foams via Liquid Additives
Advanced Electronic Materials, EarlyView.The ability to pattern liquid metal is useful for making soft electrical and thermal devices. Dispensing liquid metal from a nozzle naturally results in the formation of spheroidal droplets, making direct‐write printing challenging. Liquid metal foams containing pockets of air can extrude as filaments, albeit inconsistently.
Febby Krisnadi +3 more
wiley +1 more source