Results 71 to 80 of about 106,365 (113)
Rocket Engine Vacuum Nozzle 3D Printing: Manufacturing, Weight, and Cost Savings
Engineering ProceedingsMetallic materials additive manufacturing is extremely challenging nowadays, while aircraft manufacturers are trying to adapt the newly developed technology to produce parts of complex geometry with minimum materials losses.
Nikolaos D. Alexopoulos +10 more
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Comparison of Energy Sources for an Electric Powertrain in a Tilt-Rotor Urban Air Mobility Vehicle
Engineering ProceedingsElectric vertical take-off and landing vehicles introduce challenges in powertrain design with short but high peak loads and low-load phases over longer periods of time during wing-borne flight. In this paper, three powertrain topologies are analyzed for
Jonas Ludowicy +2 more
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Engineering ProceedingsWhen the vapour–gas mixture flow heats the cold walls of a heat exchanger, condensed phase (solid and liquid) precipitation can occur on their surfaces. This study aims to improve a model of thermohydraulic processes in a heat exchanger during condensed ...
Illia Petukhov +3 more
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Towards the Development of an Eco-Design Approach for Aircraft Components
Engineering ProceedingsThis paper presents a comprehensive approach aimed at optimizing the design of aircraft components from a cradle-to-grave sustainability perspective. Central to this approach is a rigorous sustainability assessment, which evaluates environmental, cost ...
Aikaterini Anagnostopoulou +3 more
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Evaluation of an On-Ground Regional Passenger Cabin Demonstrator
Engineering ProceedingsThe comparatively environmentally friendly turboprop aircraft should be used more often, but still need some improvements, especially regarding noise. To facilitate research into these improvements, an On-Ground Regional Passenger Cabin Demonstrator was ...
Anna Reichherzer +9 more
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A Virtual Demonstration of an Electrical Environmental Control System
Engineering ProceedingsThis study presents a virtual demonstration of the electrical environmental control system (eECS) in its relevant environment, showcasing a novel collaborative approach based on extensive model exchange between partners.
Gülberg Celikel +9 more
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Cancer Letters, 2021
The mechanisms underlying the hypoxic cancer cell-mediated differentiation of cancer-associated fibroblasts (CAFs) have not been elucidated yet. The present study showed that the hypoxic head and neck squamous cell carcinoma (HNSCC) cells promoted CAF ...
Guiquan Zhu, Bangrong Cao, Xin-Hua Liang
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The mechanisms underlying the hypoxic cancer cell-mediated differentiation of cancer-associated fibroblasts (CAFs) have not been elucidated yet. The present study showed that the hypoxic head and neck squamous cell carcinoma (HNSCC) cells promoted CAF ...
Guiquan Zhu, Bangrong Cao, Xin-Hua Liang
exaly +2 more sources
Cancers, 2020 Simple Summary Decreased expression of miR-215-5-p was found in tumor tissue of patients with colorectal cancer (CRC) in comparison to healthy colon tissue.
Tana Machackova +2 more
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Pulmonary tuberculosis biomarker miR-215-5p inhibits autophagosome-lysosome fusion in macrophages.
Tuberculosis, 2023The normal autophagy flux is beneficial for the rapid elimination of phagocytic pathogens by macrophages. However, Mycobacterium tuberculosis interferes with the autophagy flux of macrophages to weaken their immune function and evade immune surveillance.
Feng-Yi Deng +5 more
semanticscholar +1 more source