Results 81 to 90 of about 128,571 (233)

Demographic buffering in natural populations: A multi‐level perspective

Journal of Animal Ecology, Volume 95, Issue 8, Page 1298-1310, August 2026.
We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos, Samuel J. L. Gascoigne, André Tavares Corrêa Dias, Maja Kajin, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

A High-Relative-Bandwidth Doherty Power Amplifier with Modified Load Modulation Network for Wireless Communications. [PDF]

Sensors (Basel), 2023
Zhu H, Zhang Z, Gu C, Xuan X.
europepmc   +1 more source

A 2.14GHz Driver-stage Power Amplifier for Doherty Power Amplifier

DEStech Transactions on Computer Science and Engineering, 2017
This paper presented a high power amplifier drive a Doherty power amplifier. By using computer software to design and test instrument to adjust, the result shows the driver-stage power amplifier that is made of the MRF8S21100H from NXP company meet the 15dB gain, and 42% power added-efficiency (PAE) at the maximum output power.
XIN ZHANG, BIN WANG, ZICHENG XIONG
openaire   +2 more sources

Biological Versus Technical Reliability of Epigenetic Clocks and Implications for Disease Prognosis and Intervention Response

Aging Cell, Volume 25, Issue 8, August 2026.
Epigenetic clocks accurately measure biological age, but how reliable are they in practice? This study reveals a critical divergence: while clocks are highly consistent across laboratory replicates (technical reliability), their estimates fluctuate significantly in response to everyday events like meals, stress, and pollution (biological reliability ...
Raghav Sehgal, Daniel S. Borrus, John Gonzalez, Yaroslav Markov, Albert Higgins‐Chen, Alzheimer's Disease Neuroimaging Initiative   +5 more
wiley   +1 more source

Ovarian Extracellular Matrix Mechanics Regulate Oocyte‐Follicle Interactions During Female Reproductive Aging

Aging Cell, Volume 25, Issue 8, August 2026.
Hydrogel culture mimicking young and aged ovarian stromal stiffness recapitulates key features of reproductive aging, including impaired follicle growth, transzonal projections (TZPs), and oocyte quality. Silencing Smad7 rescues TZPs and oocyte quality in stiff hydrogels, identifying ECM mechanics as a driver and therapeutic target in ovarian aging ...
Xingyu Shen, Haiyang Wang, Gefei Cao, Yaelim Lee, Jin Zhu, Loo Chien Wang, Tianyun Zhao, Siok Ghee Ler, Radoslaw M. Sobota, Rong Li, Jennifer L. Young   +10 more
wiley   +1 more source

Design of a tri-band single-loop load-modulated Doherty power amplifier

Engineering Science and Technology, an International Journal
This article presents a novel tri-band Doherty power amplifier (DPA) architecture based on a single-loop L-C load modulation network. By introducing additional current and power combining nodes, this architecture enhances the degrees of freedom and ...
Yuzhe Fu, Zhijiang Dai, Shuai Liu, Xiaoyu Chen, Haitao Liu, Shengdong Hu   +5 more
doaj   +1 more source

Claiming and Blaming: How Minority Party Status Shapes Filibuster Framing in the U.S. Senate

Legislative Studies Quarterly, Volume 51, Issue 3, August 2026.
ABSTRACT Why do senators choose to talk about filibustering, a tool widely associated with obstruction and gridlock? This paper examines how senators strategically reference filibustering in official communications, focusing on two rhetorical frames: credit claiming and blaming.
Jessie E. Munson
wiley   +1 more source

Linearization of the Fifth Generation Power Amplifiers by Injection of the Second Order Digitally Processed Signals [PDF]

Radioengineering
This paper conducts a validation of two linearization approaches that utilize baseband nonlinear linearization signals of the 2nd order, through practical experiments on an asymmetrical two-way microstrip Doherty amplifier (ADA), and simulations on a ...
A. Atanaskovic, A. Djoric, N. Males Ilic, B. P. Stosic, D. Budimir   +4 more
doaj  

Historical Aspect of Load-Modulated Balanced Amplifiers

IEEE Access
This paper provides a comprehensive overview of the challenges and considerations associated with the design, implementation, and optimization of Load Modulated Balanced Amplifiers (LMBAs).
Akram Sheikhi
doaj   +1 more source

Linear Doherty power amplifier design based on adaptive input signal power control

Engineering Science and Technology, an International Journal
In modern wireless communication systems, the trade-off between efficiency and linearity in Doherty power amplifiers (DPAs) remains a critical challenge.
Zhiqing Liu, Ye Zhong, Zhijiang Dai
doaj   +1 more source