Results 31 to 40 of about 4,876,481 (301)

Ultra-Low-Loss Hollow-Core Anti-Resonant Fiber Combining Double-Tube Nesting and a Single-Layer Anti-Resonant Wall

open access: yesPhotonics
This study innovatively presents a hollow-core anti-resonant fiber integrating double-tube nesting and a single-layer anti-resonant wall. Featuring an exclusive two-layer cladding configuration along with an outer cladding circular ring, it differs ...
Xingtao Zhao   +6 more
doaj   +1 more source

Seismic airgun sound propagation in shallow water of the East Siberian shelf and its prediction with the measured source signature

open access: yesFrontiers in Marine Science, 2023
Seismic airgun sound was measured with an autonomous passive acoustic recorder as a function of distance from 18.6 to 164.2 km in shallow water (<70 m) at the continental shelf of the East Siberian Sea in September 2019.
Dong-Gyun Han   +17 more
doaj   +1 more source

Efficient computation of transient responses of frequency-dependent nonlinearly loaded transmission lines [PDF]

open access: yes, 1993
The authors address the combined time and frequency domain analysis of nonlinearly loaded low-loss transmission lines. They show that a variety of interconnects are characterized by transfer functions, whose impulse responses have a fast initial-time ...
Pignari S.   +6 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Study on Nature Fiber Composite for Noise Material Control

open access: yesInternational Journal of Technology
Transportation tracks of railways and highways are the highest noise pollution contribution to the inhabitant urban due to the sources near residential areas. Many researchers proved that the composite material could help reduce the noise by 30%. This
Muhammad Zulkarnain   +5 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Design and Testing of a Gasoline Engine Muffler Based on the Principle of Split-Stream Rushing

open access: yesApplied Sciences
In order to reduce the exhaust noise, which is the main source of gasoline engine noise, this paper uses on orthogonal test to optimize the parameters of the main structure of split-stream rushing muffler (the perforation rate of the perforated pipe ...
Shiyi Ao   +7 more
doaj   +1 more source

Factual power loss reduction by augmented monkey optimization algorithm [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2020
This paper presents Augmented Monkey Optimization Algorithm (AMOA) applied to solve optimal reactive power problem. Communal behaviour of monkeys has been utilized to model the algorithm.
L. Kanagasabai
doaj   +1 more source

The microbiome in human skin aging

open access: yesFEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana   +3 more
wiley   +1 more source

Analysis of Losses in a Bufferless Transmission Link

open access: yes, 2007
In this paper we use a multivariate Markov Modulated Fluid Flow model to study the loss process for a bufferless transmission link. We propose a method for the analysis of moments and correlations of congestion periods and cumulative amount of lost bits and lost packets from different sources.
Naumov V.A., Emstad P.J.
openaire   +2 more sources

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