Results 31 to 40 of about 973,387 (301)

Amplitude-Phase Variation in a Graphene-Based Microstrip Line

Micromachines, 2022
A graphene-based transmission line with independent amplitude and phase variation capability is proposed. Variation of graphene’s tunable conductivity by an applied DC bias is exploited in designing an attenuator and a phase shifter.
Muhammad Yasir, Sergej Fatikow, Olaf C. Haenssler   +2 more
doaj   +1 more source

A Broadband Tunable Coaxial Attenuator Based on Graphene

IEEE Access, 2019
A dynamically tunable coaxial attenuator based on graphene is presented in this paper. The attenuator is achieved by inserting a graphene sandwich structure (GSS) inside the dielectric of coaxial line along the propagation direction of electromagnetic ...
Hui Chen, Zhen Guo Liu, Wei Bing Lu, An Qi Zhang, Hao Chen   +4 more
doaj   +1 more source

Decline in AmpC β-lactamase-producing Escherichia coli in a Dutch teaching hospital (2013-2016). [PDF]

PLoS ONE, 2018
OBJECTIVE:The objective of this study is to determine the prevalence of rectal carriage of plasmid- and chromosome-encoded AmpC β-lactamase-producing Escherichia coli and Klebsiella spp.
Evert den Drijver, Jaco J Verweij, Carlo Verhulst, Stijn Oome, Joke Soer, Ina Willemsen, Eefje J A Schrauwen, Marjolein F Q Kluytmans-van den Bergh, Jan A J W Kluytmans   +8 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

Effect of 24-Epibrassinolide Plant Hormone Rates on the Level of Macronutrients in Forage Sorghum Plants Subjected to Water Deficit and Rehydration

Grasses
Forage sorghum (Sorghum bicolor (L.)) is a cereal native to Africa and belongs to the family Poaceae. It is a forage with a C4 photosynthetic pathway that stands out for its ability to adapt to different environments; it is able to produce even in ...
Daniele Monteiro Ribeiro, Sabrina de Nazaré Barbosa dos Santos, Dayana Castilho dos Santos Ferreira, Júlia Fernanda Ferreira de Miranda, Job Teixeira de Oliveira, Fernando França da Cunha, Caio Lucas Alhadas de Paula Velloso, Priscilla Andrade Silva, Cândido Ferreira de Oliveira Neto   +8 more
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Wideband CMOS Variable Gain Low-Noise Amplifier with Integrated Attenuator for C-Band Wireless Body Area Networks

Chips
This work presents a wideband variable gain low-noise amplifier (VGA-LNA) specifically engineered for medical systems operating in the C frequency band, which require the substantial amplification of low-intensity signals.
Nusrat Jahan, Nishat Anjumane Salsabila, Susmita Barua, Mohammad Mahmudul Hasan Tareq, Quazi Delwar Hossain, Ramisha Anan, Jannatul Maua Nazia   +6 more
doaj   +1 more source

A thermally activated VO2-based attenuator with SRR structure

Materials & Design, 2022
To meet the requirement of blocking unwanted or interfering signals in modern communication systems, wideband phased-array antenna systems, and 5G mobile communications, we proposed a radio frequency (RF) attenuator based on a split ring resonator (SRR ...
Zhiqiang Chen, Yunqi Cao, Yuxiao He, Wenchao Tian   +3 more
doaj   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source