Results 41 to 50 of about 803,363 (301)

Novel Compact and High Selectivity Dual-band BPF with Wide Stopband [PDF]

open access: yes, 2012
A novel type of compact and high selectivity dual-band bandpass filter (BPF) incorporating a dual-mode defected ground structure resonator (DDGSR) and a dual-mode open-stub loaded stepped impedance resonator (DOLSIR) is proposed in this paper.
Guan, B.-R., Wang, L.
core   +1 more source

Simulations of dual morphology in spiral galaxies [PDF]

open access: yes, 2002
Gas and stars in spiral galaxies are modelled with the DUAL code, using hydrodynamic and N-body techniques. The simulations reveal morphological differences mirroring the dual morphologies seen in B and K' band observations of many spiral galaxies.
Berman, S. L.
core   +3 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Compact Dual-Band Dual-Polarized Base-Station Antenna Array With a Small Frequency Ratio Using Filtering Elements

open access: yesIEEE Access, 2019
This paper presents a compact dual-band ±45° dual-polarized base-station array based on embedded filtering elements. The proposed antenna array consists of 9 dual-band antenna units, which operate at the lower band (LB) of 790-862 MHz and ...
Wen Duan   +4 more
doaj   +1 more source

Realization of dual-band topological states in Su–Schrieffer–Heeger-like photonic crystal slabs

open access: yesResults in Physics, 2023
We design the bilayer mirror-symmetric (I-shaped) photonic crystal slabs supporting dual-band topological edge states simultaneously, which is confirmed by the topological phases and localized field distributions.
Ying Chen   +4 more
doaj   +1 more source

Dual-band ridged waveguide [PDF]

open access: yes, 1975
Waveguide-in-waveguide technique involves routing two waveguides through same passageway. Smaller waveguide can be soft or silver soldered inside X-band waveguide to form single ridge guide and to propagate frequencies at C ...
Franke, J. M.
core   +1 more source

Band structures of II-VI semiconductors using Gaussian basis functions with separable ab initio pseudopotentials: Application to prediction of band offsets [PDF]

open access: yes, 1996
We describe the implementation of a separable pseudopotential into the dual space approach for ab initio density-functional calculations using Gaussian basis functions.
Chen, Xiaojie   +4 more
core   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

A 24/77 GHz Dual-Band Receiver for Automotive Radar Applications

open access: yesIEEE Access, 2019
A fully-integrated 24/77 GHz dual-band receiver is presented for automotive radar applications. The proposed receiver consists of a dual-band LNA, a dual-band sub-sampling PLL, and a wideband mixer, operating at 24 and 77 GHz alternatively.
Xiang Yi   +8 more
doaj   +1 more source

T-Duality via Gerby Geometry and Reductions [PDF]

open access: yes, 2015
We consider topological T-duality of torus bundles equipped with S^{1}-gerbes. We show how a geometry on the gerbe determines a reduction of its band to the subsheaf of S^{1}-valued functions which are constant along the torus fibres.
Bunke, Ulrich, Nikolaus, Thomas
core   +1 more source

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