نتایج جستجو برای: artificial aging

تعداد نتایج: 389761  

Journal: : 2021

Yüksek fırınlamalı olarak kullanılan yüksek katı oranlı Topcoat ve üç katmanlı döngü estetik boya uygulama proseslerinin yaşlanma performansları arasında son 10 yılda bir çok karşıt görüş oluşmuştur. Genelde otomobil üreticileri döngüsünü tercih ederler. Bu döngüsü sırasıyla, primer katmanı, bazkat katmanı transparant vernik şekillenir. sistemler ise ile karşılaştırıldıklarında, genel tarafında...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2005
Jan De Munck Kirsten Van Landuyt Eduardo Coutinho André Poitevin Marleen Peumans Paul Lambrechts Bart Van Meerbeek

UNLABELLED A widely used artificial aging methodology is thermo-cycling. The ISO TR 11450 standard (1994) recommends 500 cycles in water between 5 and 55 degrees C. Recent literature revealed that more cycles are needed to mimic long-term bonding effectiveness. Furthermore, the artificial aging effect induced by thermo-cycling is not clearly established. Two underlying mechanisms can be advance...

2004
John R. Podlena Tim Hendtlass

The combination of the broad problem searching capabilities of a genetic algorithm with the local maxima location capabilities of a hill climbing algorithm can be a powerful technique for solving classification problems. Producing a number of specialist artificial neural networks, each an expert on one category, can be beneficial when solving problems in which the categories are distinct. This ...

Journal: :Journal of composites science 2023

Reversible addition–fragmentation chain transfer (RAFT)-mediated polymerization has been implemented in commercially available bulk-fill dental composites, with the idea of either optimizing at depth, while providing sufficient opacity, or reducing exposure time. The elastoplastic and viscoelastic behavior materials pursuing both ideas are described comparatively connection microstructure artif...

Journal: :Corrosion Reviews 2023

Abstract The priority task of modern aircraft construction is to ensure the reliability operation structures, which depends both on quality execution technological processes during manufacturing and corrosion-mechanical durability welded joints. This work aims study influence contact duration with a corrosive environment mechanical strength base metal joints Al–Mg–Si–Cu alloy, heat-treated in d...

Journal: :Teach Journal of Christian Education 2022

Social researchers McCrindle and Fell draw on their experiences in following trends technology - information management, social media, robotics, artificial intelligence; demographic aging diversity the population, including interactions between mix of generations within current society. COVID-19 accelerated highlighted such trends.

2004
William J. Federspiel Robert G. Svitek

Artificial lungs are medical devices designed to take over or supplement the respiratory function of the lung: oxygenating the blood and removing carbon dioxide. They are generally classified as extracorporeal, paracorporeal, intravascular, or intrathoracic devices (Fig. 1). The artificial lungs used clinically today are extracorporeal blood oxygenators, primarily used in operations requiring c...

1998
M. MURAYAMA

Pre-precipitation clustering and chemical nature of the metastable precipitates in aged Al-Mg-Si(-Cu) alloys have been investigated by atom probe field ion microscopy (APFIM) and transmission electron microscopy (TEM) for better understanding of the two-step aging behavior and the effect of excess Si. After a prolonged natural aging, co-clusters of Mg and Si atoms are observed in addition to se...

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