Results 61 to 70 of about 630,543 (264)

INVESTIGATION OF AERODYNAMIC PRESSURE DURING THE HIGH-SPEED TRAIN PASSAGE

open access: yesNauka ta progres transportu, 2016
Purpose. The scientific paper highlights research of aerodynamic pressure and distribution of airflow velocity field along the moving high-speed train. Methodology.
S. T. Djabbarov
doaj   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

open access: yesAdvanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio   +11 more
wiley   +1 more source

Verallgemeinerung der Stromfunktionsmethode auf drei Dimensionen

open access: yesMeteorologische Zeitschrift, 1995
Es wird gezeigt, daß die "Stromfunktionsmethode ", die bisher nur für die Lösung zweidimensionaler inkompressibler Strömungsprobleme gebräuchlich ist, auf plausible Weise auf drei Dimensionen verallgemeinert werden kann.
Uwe Sievers
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

INFLUENCE OF VARIOUS OPTIONS TO BAFFLES SETUP ON AIR VELOCITY AND ITS UNIFORMITY IN A DRYING KILN [PDF]

open access: yesPro Ligno, 2015
In this study, an experimental-based comparative analysis among different options to the baffles settup in a drying kiln was carried. The experiments consisted in measuring the air velocity in different points located at the outlet face of stacks.
Bogdan BEDELEAN
doaj  

ASMUS — Ein numerisches Modell zur Berechnung der Strömung und der Schadstoffverteilung im Bereich einzelner Gebäude. II: Schadstoffausbreitung und Anwendung

open access: yesMeteorologische Zeitschrift, 1997
Mit dem mikroskaligen Modell ASMUS-F werden die Strömungs- und Ausbreitungsverhältnisse in Straßenschluchten untersucht. Die Ergebnisse zeigen eine starke Abhängigkeit von der fahrzeuginduzierten Turbulenz, während Dachform und vorhandene Bäume die ...
Günter Gross
doaj   +1 more source

Design of Extrusion Die for Medical Multi-lumen Tube Using Inverse Extrusion Simulation and Optimization [PDF]

open access: yes한국정밀공학회지
The design of the extrusion die significantly affects both the extrusion process and the quality of multi-lumen tubes. Traditional design methods that rely on trial and error tend to increase manufacturing time and costs while diminishing product quality.
Yerim Kim   +4 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

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