Results 21 to 30 of about 365,625 (308)

Simulation of the Effects of Angle of Attack and Projectile Contour in Damage Development in Reinforced Concrete

open access: yesDesigns, 2021
The impact of projectiles in reinforced or unreinforced concrete is of prime importance in applied mechanics and engineering. Parameters such as penetration depth, velocity or energy of the projectile, and the geometry and the angle of attack of the ...
Stefan P. Jurecs, Ali Tabei
doaj   +1 more source

Study on correction technology of aircraft angle-of-attack signal based on estimation of side-slip angle

open access: yesHangkong gongcheng jinzhan
The angle-of-attack signal is very important for modern fly-by-wire flight control system aircraft. The inconsistency of the local airflow on both sides of the nose will cause the difference of the angle-of-attack signal.The signal-monitoring voting ...
XUE Yuan, LIU Shimin, WEI Jianlong
doaj   +1 more source

Secondary Acute Angle-Closure Attack: Diagnosis and Management

open access: yesSiriraj Medical Journal, 2018
Patients may come with acute angle-closure attack that mimics primary disease, but actually there was a hidden cause. Mostly, fellow eye with wide open angle might be a clue for secondary cause. However, an area with high prevalence of narrow angle makes
Sakaorat Petchyim
doaj   +3 more sources

Determination of angle of attack for rotating blades [PDF]

open access: yesINCAS Bulletin, 2012
For a rotating blade the flow passing by a blade section is bended due to the rotation and the local flow field is influenced by the bound circulation on the blade. As a further complication, 3-D effects from tip and root vortices do a precise definition
Alexandru DUMITRACHE   +3 more
doaj   +1 more source

State of the art in acute glaucoma attack predisposition issue

open access: yesРоссийский офтальмологический журнал, 2022
Angle-closure glaucoma diagnosis verification is based on biometric indicators and computer tomography data of the anterior segment of the eye. However, not every patient with a narrow angle and a shellow anterior chamber develops an acute attack.
N. A. Bakunina
doaj   +1 more source

Design of Three-Dimensional Vector Guidance Law for Attack Time and Angle under Field of View Angle Constraints [PDF]

open access: yesHangkong bingqi
In order to enhance the precision of missile strikes on targets, controlling the three-dimensional gui-dance problem involving attack time and attack angle is of significant importance in practical applications.
Xiong Tianhao, Wang Changyuan, Zhang Ke, Su Yu, Guo Zhengyu
doaj   +1 more source

Modification of Horizontal Wind Turbine Blade: A Finite Element Analysis

open access: yesInternational Journal of Technology, 2023
Turbines are efficient power generators. Because wind energy is a clean fuel source, it is widely utilized in some regions. One of the major factors affecting wind turbine performance is the angle of attack of the blade.
Sahahd Hamza   +4 more
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

An Intelligent Algorithm for Aerodynamic Parameters Calibration of Wind Tunnel Experiment at a High Angle of Attack

open access: yesInternational Journal of Aerospace Engineering, 2023
In this paper, an intelligent algorithm for the aerodynamic parameter calibration of wind tunnel experiments of advanced layout aircraft at a high angle of attack is proposed.
Yeguang Wang   +5 more
doaj   +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

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