Results 31 to 40 of about 1,054 (130)

Specific Absorption Rate and Maximum Permissible Input Power of Planar Inverted-F Antennas

Results in Engineering
The electromagnetic wave radiation toward human heads has gained attention due to a large number of mobile phone usage, especially concerning the planar inverted-F antenna (PIFA), which is commonly used in these devices.
Nurul Inshirah Mohd Razali, Norhudah Seman, Nor Aishah Muhammad   +2 more
doaj   +1 more source

Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications

Sensors, 2021
Moisture causes detuning and increased losses in textile antennas, and it affects resonant and wideband textile antennas differently. In this work, we studied the effect of moisture on a resonant textile planar inverted-F antenna (PIFA) and a wideband ...
Davor Bonefačić, Juraj Bartolić
doaj   +1 more source

A SEMI-DEFECTED GROUND PLANE AND A BINARY GENETIC ALGORITHM FOR DESIGNING A VERY COMPACT TRIPLE-BAND PIFA ANTENNA

Jordanian Journal of Computers and Information Technology, 2022
we suggest in this study a very compact triple band PIFA antenna for mobile and wireless applications.by using the binary genetic algorithm and a semi-defected ground plane.
Layla Wakrim, Asma Khabba, Jamal Amadid, Saida Ibnyaich   +3 more
doaj   +1 more source

Comparative Genomics of the Endosymbiont Cardinium Causing Reproductive Manipulation in Encarsia Parasitoid Wasps. [PDF]

Microbiologyopen
We assembled four Cardinium hertigii draft genomes: cEina3 causes cytoplasmic incompatibility, cEhis1 induces parthenogenesis, cEper2 is associated with parthenogenesis, and cEina2 infects asymptomatically. All four strains are closely related and hosted by Encarsia parasitoid wasps, but key differences exist, including their metabolic potential and ...
Schultz DL, Stouthamer CM, Kelly SE, Mathieson OL, Kleiner M, Hunter MS, Schmitz-Esser S.   +6 more
europepmc   +2 more sources

Electrochemical Skeletal Editing via Manganese‐Catalyzed Nitrogen Atom Insertion Scalable by Electroflow

ChemistryEurope, Volume 4, Issue 5, May 2026.
Direct nitrogen atom insertion for skeletal editing tends to rely on superstoichiometric amounts of chemical oxidants. Herein, we report on a manganaelectro‐catalyzed nitrogen atom insertion into indenes with broad scope to access isoquinolines. Additionally, the reaction is easily scalable via electroflow.
Simon L. Homölle, Tristan Bauch, Aboubakr Hamad, Bo‐Sheng Zhang, Lutz Ackermann   +4 more
wiley   +1 more source

Design of a Novel Compact MICS Band PIFA Antenna for Implantable Biotelemetry Applications

Sensors, 2022
An implantable stacked planar inverted-F antenna (PIFA) for biotelemetric communication in the 402–405 MHz Medical Implant Communications Service (MICS) frequency band is designed and fabricated. With the proposed PIFA structure, a slot on each radiating
Ziyang Huang, Hao Wu, Seedahmed S. Mahmoud, Qiang Fang   +3 more
doaj   +1 more source

Site‐Selective Oxidative Dimerization of Oxaphenalenone Scaffolds: Total Synthesis of (±)‐Bacillosporin C

ChemistryEurope, Volume 4, Issue 4, April 2026.
An effective electrochemical synthetic route to bacillosporin C, a dimeric oxaphenalenone of the duclauxin family, is disclosed. The key transformation is a site‐selective oxidative homocoupling of the oxaphenalenone monomer SF226, achieved under redox‐mediator‐free conditions.
Yuen Qian, Tomoya Sugai, Tsuyoshi Saitoh, Ken Ohmori   +3 more
wiley   +1 more source

Multiband Operation and Performance Enhancement of the PIFA Antenna by Using Particle Swarm Optimization and Overlapping Method

Applied Computational Intelligence and Soft Computing, 2017
Recently, the demand for wireless devices that support multiband frequency has increased. The integration of such technology in mobile communication system has led to a great demand in developing small size antenna with multiband operation, which is able
L. Wakrim, S. Ibnyaich, M. M. Hassani
doaj   +1 more source

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

ChemistryOpen, Volume 15, Issue 4, April 2026.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Enhanced Responsivity, Accuracy, and Stability of Aerosol Jet Printing via Mechanical Switching Valve Assisted Internal Shuttering

Advanced Science, Volume 13, Issue 9, 13 February 2026.
This work demonstrates ultra‐high ON‐OFF responsivity of AJP by mechanical switching valve assisted shuttering. The jet relaxation and ON‐OFF delay are substantially eliminated from greater than 35 s, maintaining patterning quality independent of the variations of printing parameters, permitting excellent process stability and universality.
Jinhang Wang, Li Meng, Shuhuan Zhang, Pan Chen, Kaiwen Wei, Beibei Zhu, Xiaoyan Zeng   +6 more
wiley   +1 more source