Results 51 to 60 of about 208,195 (300)

Flexible Hilbert-Curve Loop Antenna Having a Triple-Band and Omnidirectional Pattern for WLAN/WiMAX Applications

International Journal of Antennas and Propagation, 2012
A triple-band flexible loop antenna is proposed for WLAN/WiMAX applications in this paper. The proposed antenna is formed by the third-order Hilbert-curve and bending type structure which provides flexible characteristics.
Dang-Oh Kim, Che-Young Kim, Dae-Geun Yang   +2 more
doaj   +1 more source

Thinning of Sierpinski fractal array antennas using bounded binary fractal-tapering techniques for space and advanced wireless applications

ICT Express, 2019
Fractal arrays are repetitive-geometry-based smart arrays having impressive array factor properties. However, the performance of these arrays degrades owing to their large number of antenna elements at higher expansion levels. This research work presents
V.A. Sankar Ponnapalli, P.V.Y. Jayasree
doaj   +1 more source

Modified Crossed-Wire Antennas Radiating a Circularly Polarized Conical Beam

International Journal of Antennas and Propagation, 2020
Two types of modified crossed-wire antennas are investigated to enhance a circularly polarized (CP) wave bandwidth. The wire length of each antenna is increased twice as long as that of the original antenna.
Kazuhide Hirose, Kazuhiko Hata, Hisamatsu Nakano   +2 more
doaj   +1 more source

Ant colony optimisation-based radiation pattern manipulation algorithm for electronically steerable array radiator antennas [PDF]

, 2009
A new algorithm for manipulating the radiation pattern of Electronically Steerable Array Radiator Antennas is proposed. A continuous implementation of the Ant Colony Optimisation (ACO) technique calculates the optimal impedance values of reactances ...
Aelterman, Jan, Declercq, Frederick, Goossens, Roald, Rogier, Hendrik   +3 more
core   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Design of microstrip antenna with filtering characteristic for wireless communication systems

Zhongguo Jianchuan Yanjiu, 2019
[Objectives] This paper studies the development of a microstrip antenna with both traditional radiation characteristic and good out-of-band rejection characteristic.[Methods] Through the filter integrated design method,the microstrip antenna with ...
WU Weijun, XI Xiujuan, MO Yi, LIU Qifeng, CHEN Liang, WANG Chun   +5 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

PARP inhibitors elicit distinct transcriptional programs in homologous recombination competent castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
PARP inhibitors are used to treat a small subset of prostate cancer patients. These studies reveal that PARP1 activity and expression are different between European American and African American prostate cancer tissue samples. Additionally, different PARP inhibitors cause unique and overlapping transcriptional changes, notably, p53 pathway upregulation.
Moriah L. Cunningham, Jasibel Vasquez‐Gonzalez, Samantha M. Barnada, Salome Tchotorlishvili, Latese Jones, Ryan Maguire, Genevieve Lewis, Kinza Rizwan, Jenny Deng, Salma Koachar, Drithi Patel, Hailey Shankle, Tessa Mulders, Namra Ajmal, Charalambos Solomides, Emad S. Alnemri, Teresa F. Alnemri, Ayesha A. Shafi, Leonard G. Gomella, Wm Kevin Kelly, Steven B. McMahon, Matthew J. Schiewer   +21 more
wiley   +1 more source

Energy Efficiency Analysis of Antenna Selection Techniques in Massive MIMO-OFDM System with Hardware Impairments

Journal of Computer Networks and Communications, 2018
In massive multiple-input multiple-output (M-MIMO) systems, a large number of antennas increase system complexity as well as the cost of hardware. In this paper, we propose an M-MIMO-OFDM model using per-subcarrier antenna selection and bulk antenna ...
Anuj Singal, Deepak Kedia
doaj   +1 more source

NANO-ANTENNAS MODELING WITH BOR-FDTD AND INVESTIGATING EFFECT OF DISTANCE ON FLUORESCENCE [PDF]

مجله مدل سازی در مهندسی, 2013
By applying BOR-FDTD method, fluorescence enhancement by using nano-antennas is investigated. Details of computational method are described including, updating equations, source, detector, absorbing boundary conditions.
احمد Mohammadi
doaj   +1 more source