Results 21 to 30 of about 2,355,604 (311)

Breaking enhancers to gain insights into developmental defects

eLife, 2023
Despite ground-breaking genetic studies that have identified thousands of risk variants for developmental diseases, how these variants lead to molecular and cellular phenotypes remains a gap in knowledge. Many of these variants are non-coding and occur at enhancers, which orchestrate key regulatory programs during development.
Anjana Sundarrajan, Daniel A Armendariz, Gary C Hon   +2 more
openaire   +3 more sources

Modulation Domain Adaptive Gain Equalizer for Speech Enhancement [PDF]

, 2011
This paper evaluates speech enhancement by filtering in the modulation frequency domain, as an alternative to filtering in conventional frequency domain. Adaptive Gain Equalizer (AGE) is a commonly used single-channel speech enhancement algorithm. A
Sällberg, Benny, Muhammad Shahid, Nedelko Grbic, Benny Sällberg, Ishaq, Rizwan, Rizwan Ishaq, Shahid, Muhammad, Claesson, Ingvar, Grbic, Nedelko, Lövström, Benny, Ingvar Claesson, Benny Lövström   +11 more
core   +1 more source

Wideband 5G Antenna Gain Enhancement Using a Compact Single-Layer Millimeter Wave Metamaterial Lens

IEEE Access, 2023
This paper presents a very compact, wideband, and enhanced-gain antenna for 5G applications. A simple single-layer millimeter wave (mm-wave) metamaterial lens (meta-lens) is used to improve the gain, aperture efficiency, and gain bandwidth of a slotted ...
Chaker Mohsen Saleh, Eqab Almajali, Anwar Jarndal, Jawad Yousaf, Saqer S. Alja'Afreh, Rony E. Amaya   +5 more
doaj   +1 more source

Overview of Planar Antenna Loading Metamaterials for Gain Performance Enhancement: The Two Decades of Progress

IEEE Access, 2022
Metamaterials (MTMs) are artificially engineered materials with unique electromagnetic properties not occurring in natural materials. MTMs have gained considerable attention owing to their exotic electromagnetic characteristics such as negative ...
Bashar A. F. Esmail, Slawomir Koziel, Stanislaw Szczepanski   +2 more
doaj   +1 more source

Detection of gain enhancement in laser-induced fluorescence of rhodamine B lasing dye by silicon dioxide nanostructures-coated cavity

Photonic Sensors, 2017
In this work, nanostructured silicon dioxide films are deposited by closed-field unbalanced direct-current (DC) reactive magnetron sputtering technique on two sides of quartz cells containing rhodamine B dye dissolved in ethanol with 10‒5 M concentration
Mohammed N. A. Al-Tameemi
doaj   +1 more source

Elevated pulse pressure during the acute period of ischemic stroke is associated with poor stroke outcome [PDF]

, 2004
<p><b>Background:</b> It is controversial which component of blood pressure (BP) during acute period of stroke best predicts outcome.
Lees, K.R., Aslanyan, S., Weir, C.J., ASLANYAN S, WEIR C. J, CAROLEI, ANTONIO, LEES K. R. FOR THE GAIN INTERNATIONAL STEERING COMMITTEE AND INVESTIGATORS   +6 more
core   +1 more source

Metasurface-Based Lens for Antenna Gain Enhancement and Radar Cross Section Reduction

IEEE Photonics Journal, 2019
In this paper, leveraging the resonant phase and the geometry phase simultaneously, we demonstrated a low scattering lens antenna, which can work at both transmission and reflection mode.
Jianing Yang, Cheng Huang, Jiakun Song, Xu Zhang, Xin Xie, Xiangang Luo   +5 more
doaj   +1 more source

Frequency Reconfigurable Near-Zero Refractive Index Material for Antenna Gain Enhancement Applications [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022
In this paper, a planar near-zero refractive index material (NZRIM) consisting of an outer loop with four symmetrical quarter-rings is proposed. The quarter-rings are connected to the outer loop by two symmetrical microstrip lines on the opposite side ...
Ren Wang, Tao Tang, Melad M. Olaimat, Yuanzhi Liu   +3 more
doaj   +1 more source

Uniformly 3-D-Printed Low-Cost Hedgehog Spherical Lens Antenna

IEEE Open Journal of Antennas and Propagation
This paper presents a design strategy for a low-profile, low-cost, uniformly 3D-printed dielectric spherical lens antenna, tailored for high-gain communication applications.
Mohammad Omid Bagheri, Erik Yann Harmgarth, Omar M. Ramahi, Yahia M. M. Antar, George Shaker   +4 more
doaj   +1 more source

A Novel Methodology for Gain Enhancement of the Fabry-Pérot Antenna

IEEE Access, 2019
A significant problem that is encountered with the traditional Fabry-Pérot cavity (FPC) antenna is the nonuniform phase distribution inside the cavity, which adversely affects the radiation characteristics of the antenna.
Peng Xie, Guangming Wang, Haipeng Li, Xiangjun Gao   +3 more
doaj   +1 more source