Results 31 to 40 of about 5,367,272 (280)

Comparative study between random vibration and linear static analysis using Miles method for thruster brackets in space structures [PDF]

INCAS Bulletin, 2017
Random vibrations occur during the launch at the fastening interface between thruster brackets and basic support of satellite. These are generated in the launcher by the motion of some mechanical parts, combustion phenomena or structural elements excited
Ion DIMA, Cristian-Gheorghe MOISEI, Calin-Dumitru COMAN, Mihaela NASTASE, Cristina-Diana LILICEANU, Alexandra Raluca PETRE   +5 more
doaj   +1 more source

The calculation of the dynamic characteristics of the spillway of the dam

Magazine of Civil Engineering, 2022
The object of the presented studies is a concrete spillway dam of a run-of-river hydroelectric power station. The modes of vibrations are determined on the basis of a solid model, which is necessary to take into account possible resonant phenomena in the
Kozinetc Galina, Kozinetc Pavel
doaj   +1 more source

Active Vibration-Based Condition Monitoring of a Transmission Line

Actuators, 2021
In the power system, the transmission tower is located in a variety of terrains. Sometimes there will be displacement, inclination, settlement and other phenomena, which eventually lead to the collapse of the tower. In this paper, a method for monitoring
Liuhuo Wang, Chengfeng Liu, Xiaowei Zhu, Zhixian Xu, Wenwei Zhu, Long Zhao   +5 more
doaj   +1 more source

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

FEBS 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, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

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

FEBS 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

A consideration to natural frequencies under force control

Nihon Kikai Gakkai ronbunshu, 2015
For characterizing vehicle dynamic behavior, the natural frequency and the damping ratio under position control, that is the control using steering angle as driver's input, have been developed as representative indices.
Hideki SAKAI
doaj   +1 more source

Modal analysis of a small vertical axis wind turbine (Type DARRIEUS) [PDF]

INCAS Bulletin, 2012
This paper reports a brief study on free vibration analysis for determining parameters such as natural frequencies and mode shapes for vertical axis wind turbines (VAWT) for an urban application.
Ion NILA, Radu BOGATEANU, Marcel STERE, Daniela BARAN   +3 more
doaj   +1 more source

Natural Frequencies of Levodopa-Induced Dyskinesia in Parkinson's Disease. [PDF]

Ann Clin Transl Neurol
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Isaias IU, Avantaggiato F, Pezzoli G, Canessa A.   +3 more
europepmc   +2 more sources

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

NATURAL OSCILLATIONS FREQUENCIES OF HYDRAULIC ACCUMULATOR ELEMENTS SIMULATION

Авіаційно-космічна техніка та технологія, 2017
The paper presents simulation results of Heat Controlled Accumulator (HCA) structural parts natural frequencies. Two different mounting brackets were analyzed including impact of interior parts of accumulator. Find out that the minimal frequencies are in
Р. Ю. Турна, В. С. Чигрин, Д. Ю. Зинченко, А. В. Белогуб   +3 more
doaj   +1 more source