Results 71 to 80 of about 23,483,289 (298)

Coupling Reduction of Extremely Closely Spaced Circularly Polarized MIMO Patch Antenna by Phase Shift Method

open access: yesIEEE Access, 2023
This paper shows a method to reduce the mutual coupling between extremely closely spaced circularly polarized (CP) multiple-input-multiple-output (MIMO) antenna.
Huy-Hung Tran   +3 more
doaj   +1 more source

Numerical modelling of rubber vibration isolators [PDF]

open access: yes, 2003
An important cause for interior noise in vehicles is structure-borne sound from the engine. The vibrations of the source (engine) are transmitted to the receiver structure (the vehicle) causing interior noise in the vehicle. For this reason the engine is
Beijers, Clemens A.J., Boer, André de
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

High-Isolation Diplexer With High Frequency Selectivity Using Substrate Integrate Waveguide Dual-Mode Resonator

open access: yesIEEE Access, 2019
Two novel substrate integrated waveguide (SIW) high-isolation dual-mode diplexers based on electromagnetic perturbation technology have been presented in this paper.
Kaijun Song   +5 more
doaj   +1 more source

A Novel Calculation Method to Design Parasitic Decoupling Technique for Two Antennas

open access: yesIEEE Access, 2020
In this paper, a systematic and calculation-based parasitic decoupling technique (PDT) is proposed to mitigate the mutual coupling between two closely coupled antennas.
Min Li   +4 more
doaj   +1 more source

High-Isolation Dual-Polarized Microstrip Antenna via Substrate Integrated Waveguide Technology [PDF]

open access: yes, 2014
A dual-polarized microstrip antenna with high-isolation is proposed by the utilization of the substrate-integrated waveguide (SIW) technology. According to the SIW technology, the metalized holes (MHs) are inserted into the substrate for the proposed ...
Cao, Xiangyu   +3 more
core   +1 more source

Selection and environmental adaptation along a path to speciation in the Tibetan frog Nanorana parkeri. [PDF]

open access: yes, 2018
Tibetan frogs, Nanorana parkeri, are differentiated genetically but not morphologically along geographical and elevational gradients in a challenging environment, presenting a unique opportunity to investigate processes leading to speciation. Analyses of
Che, Jing   +18 more
core   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Simulation and Design of Three 5G Antennas

open access: yesApplied Sciences
In the context of 5G networks, this paper investigates microstrip array antennas and mobile terminal MIMO array antennas. It introduces two innovative designs and, based on these, develops and fabricates a mobile terminal antenna.
Keyu Li   +3 more
doaj   +1 more source

Chromosome Centromeres: Structural and Analytical Investigations with High Resolution Scanning Electron Microscopy in Combination with Focused Ion Beam Milling [PDF]

open access: yes, 2009
Whole mount mitotic metaphase chromosomes of different plants and animals were investigated with high resolution field emission scanning electron microscopy (FESEM) to study the ultrastructural organization of centromeres, including metacentric ...
Schroeder-Reiter, E., Wanner, Gerhard
core   +1 more source

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