Results 81 to 90 of about 139,769 (296)
Multifrequency broadband polarized horn antenna [PDF]
, 1981 A corrugated conical horn antenna is simultaneously fed a multiplicity of signals, two for each of five frequencies, with each of a pair of signals fed in each of two orthogonal planes for excitation of a desired spherical hybrid mode.
Green, K. A.
core +1 more source
Black holes in the conical ensemble
, 2012 We consider black holes in an "unsuitable box": a finite cavity coupled to a thermal reservoir at a temperature different than the black hole's Hawking temperature. These black holes are described by metrics that are continuous but not differentiable due
Grumiller, Daniel +2 more
core +1 more source
LL‐37 Driven Phase Transition and Stacking in Oligolamellar Gram‐Negative Bacterial Membrane Models
Advanced Functional Materials, EarlyView.This work establishes oligolamellar bacterial membrane models to investigate how LL‐37 disrupts the complex dual‐bilayer architecture of Gram‐negative bacteria. Combining SAXS, cryo‐TEM, electrophoretic mobility measurements, and coarse‐grained simulations, it reveals cardiolipin‐driven phase transitions leading to bicelle‐like structures and membrane ...
Bettina Tran +5 more
wiley +1 more source
The Method of High Accuracy Calculation of Robot Trajectory for the Complex Curves
Management Systems in Production Engineering, 2020 The geometric model accuracy is crucial for product design. More complex surfaces are represented by the approximation methods. On the contrary, the approximation methods reduce the design quality. A new alternative calculation method is proposed.
Lozhkin Alexander +2 more
doaj +1 more source
Kepler’s Laws and Conic Sections [PDF]
Arnold Mathematical Journal, 2015 The Kepler's law reads as second order ODE \(\ddot{\pmb{\text{r}}} = -k |\pmb{\text{r}}|^{-3} \pmb{\text{r}}\), where \(\pmb{\text{r}}=(x,y)\) is the position of a planet \(P\) in the \(Oxy\)-plane and \(k\) is a coefficient of proportionality in the Newton law \(F=ma\). The author lifts \(P\) on the cone \(r^2=x^2+y^2\) and represents the lifted point
openaire +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
CALCULATION METOD FOR THE EVALUATION OF INFLUENCE OF TOOTH ENGAGAMENT PARITY IN CONICAL SPUR GEAR ON CONTACT PRESSURES, WEAR AND DURABILITY [PDF]
Applied Computer Science, 2016 The paper presents the results of research undertaken to determine maximum contact pressures, wear and life of conical gears, taking account gear technological correction, tooth engagement and wear-generated changes in curvature of their involute profile.
Myron CHERNETS, Yuriy CHERNETS
doaj
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
General Axisymmetric Solutions and Self-Tuning in 6D Chiral Gauged Supergravity
, 2004 We re-examine the properties of the axially-symmetric solutions to chiral gauged 6D supergravity, recently found in refs. hep-th/0307238 and hep-th/0308064. Ref. hep-th/0307238 finds the most general solutions having two singularities which are maximally-
A. Vilenkin +36 more
core +4 more sources
Advanced Functional Materials, EarlyView.A hydrogel with dynamic cross‐links was formed by cross‐linking hyaluronic acid with curcumin‐preloaded, phenylboronic acid‐modified poly(amidoamine) dendrimers. This hydrogel exhibited excellent injectability and self‐healing ability, enabling controlled Cur release in response to low pH, high reactive oxygen species (ROS) generation, or mechanical ...
Junjie Liu +9 more
wiley +1 more source