نتایج جستجو برای: cast post
تعداد نتایج: 428535 فیلتر نتایج به سال:
In the present work, we investigate the effect of "fatigue" on the fatigue behavior and atomic structure of Zr-based BMGs. Fatigue experiments on the failed-by-fatigue samples indicate that the remnants generally have similar or longer fatigue life than the as-cast samples. Meanwhile, the pair-distribution-function (PDF) analysis of the as-cast and post-fatigue samples showed very small changes...
The popularity of clear overlay retainers (CORs) has increased recently because of their advantages such as better esthetics, cost effectiveness, easy fabrication, and good compliance. However, a deficiency in posterior occlusal settling is a reported limitation of CORs. The aim of this study was to evaluate the posterior occlusal contact changes in a new type of clear orthodontic retainer call...
background numerous factors have an effect on the accuracy of an impression and resultant cast, and these include: impression material, impression technique, tray selection, impression disinfection, storage time of impression before pouring, stone type used for fabrication of cast. up to now, there has been little research conducted on the effect of contact time of a cast with an impression, on...
BACKGROUND The use of an oscillating saw for cast removal creates a potential for iatrogenic injury and patient discomfort. Burns and abrasions can occur from the heat created by frictional forces and direct blade contact. With use of a cadaver model system, skin temperature measurements were recorded during cast removal with an oscillating saw. METHODS Casts of uniform thickness were applied...
مقدمه: تحقیقات در زمینه لحیمکاری معمولی آلیاژهای بیس نشان میدهد که لحیمکاری این نوع آلیاژها غیرقابل پیش بینی است و از حساسیت تکنیکی بسیار بالایی برخوردار است. هدف از این مطالعه بررسی روش Cast to (کستینگ برای بار دوم) و مقایسه استحکام خمشی آن با روش لحیمکاری معمولی بود. مواد و روشها: در این مطالعه آزمایشگاهی تجربی، تعداد 30 نمونه الگوی فلزی استوانه ای به طول 60 میلیمتر و قطر 3 میلیمتر از آ...
Recognising entities in social media text is difficult. NER on newswire text is conventionally cast as a sequence labeling problem. This makes implicit assumptions regarding its textual structure. Social media text is rich in disfluency and often has poor or noisy structure, and intuitively does not always satisfy these assumptions. We explore noise-tolerant methods for sequence labeling and ap...
In this research the relationship between graphitization ability and the carbon equivalent (CE %) of a cast iron have been investigated. The first series of moulds were cast at CE of 3.2% and pouring temperature of 1350°C. The other moulds were cast at different CE% with varying Si content. The graphitization ability( c ) was calculated using the thermodynamics aspects of graphitization and CE%...
This article describes a simple method of fabricating a stable and retentive record base to ensure an accurate registration of the maxillomandibular relationship. A postpalatal seal is established along the posterior end of the record base on the definitive cast using a silicone bite registration material to create a border seal along with the lip/cheek draping actions and to evaluate adequacy ...
In order to study the bonding strength of joint surface double-sided laminated shear wall, a wall specimen was designed and fabricated, then bars were planted in precast layer middle post pouring specimen, normal tensile bond tested by drilling core planting bar drawing method. The results show that can be detected method drawing, according cross section sample, it known is indeed weak part mem...
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