Results 41 to 50 of about 15,288 (305)

A Practical Method for Measuring Incident Microwave Power in RF Systems of Particle Accelerators

International Journal of Antennas and Propagation
In high reflection microwave power measurements with load impedance mismatch, the limited directional performance of directional couplers introduces interference from reverse signals, which affects the accuracy of incident microwave power measurements ...
Zeng Fanjian, Sun Liepeng, Lu Liang, Jin Kean, Ma Wei   +4 more
doaj   +1 more source

Direct UV-written broadband directional planarwaveguide couplers [PDF]

, 2005
Editore: Optical Society of ...
Olivero, Massimo, Svalgaard, M.
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

30 dB microstrip coupler with high directivity

Sustainable Engineering and Innovation, 2020
Due to inhomogeneous structure of a microstrip directional couplers, i.e. partly dielectric substrate, partly air, they mostly present property of poor directivity and low coupling level.
Azra Yildiz, Şehabeddin Taha İmeci
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Artificial Immune Network Design of Optical Multiplexers/Demultiplexers

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
An efficient design approach of directional couplers based multiplexers/demultiplexers for optical communication applications, by using an adapted artificial immune network algorithm for optimization (opt-AiNet), is presented and validated by using the ...
Carlos H. Silva-Santos, Vitaly F. Rodríguez-Esquerre, Hugo E. Hernández-Figueroa   +2 more
doaj   +1 more source

Engineering interaction dynamics in active resonant photonic structures

APL Photonics, 2021
The collective response of a system is profoundly shaped by the interaction dynamics between its constituent elements. In physics, tailoring these interactions can enable the observation of unusual phenomena that are otherwise inaccessible in standard ...
Yuzhou G. N. Liu, Omid Hemmatyar, Absar U. Hassan, Pawel S. Jung, Jae-Hyuck Choi, Demetrios N. Christodoulides, Mercedeh Khajavikhan   +6 more
doaj   +1 more source

CD47 promotes mitogen‐activated protein kinase and epithelial‐to‐mesenchymal transition molecular programs to drive prometastatic phenotypes in non‐small cell lung cancer

Molecular Oncology, EarlyView.
Beyond its role in immune evasion, this study identified that CD47 drives tumor‐intrinsic signaling in non‐small cell lung cancer (NSCLC). Transcriptomic profiling and functional studies revealed that CD47 regulates cell adhesion, migration, and metastasis through an ERK–EMT signaling axis.
Asa P.Y. Lau, Lilian G. Zhai, Ryunosuke Hoshi, Zackary Rousseau, Abraam Zakhary, Yin Fang Wu, Rola M. Saleeb, Heyu Ni, Kelsie L. Thu   +8 more
wiley   +1 more source

Compact Broadband Directional Couplers Using Subwavelength Gratings

IEEE Photonics Journal, 2016
We experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm.
Yun Wang, Zeqin Lu, Minglei Ma, Han Yun, Fan Zhang, Nicolas A. F. Jaeger, Lukas Chrostowski   +6 more
doaj   +1 more source

3D-printed Acoustic Directional Couplers [PDF]

, 2014
Acoustic Directional Couplers permit separation of forward and reverse sound pressure waves. This separation opens the way to traceable precision acoustic reflection measurements.
MacDonell, Marcus Scott Glengarry, Scott, Jonathan B.   +1 more
core   +1 more source