Temporary gas pipeline sealing during fire works
نویسندگان
چکیده
منابع مشابه
Coronal Sealing Ability of Three Temporary Filling Materials
INTRODUCTION Providing adequate coronal seal of temporary filling materials is critical for the success of root canal therapy. The aim of this in vitro study was to compare coronal seal ability of three restorative materials over different periods of time. MATERIALS AND METHODS Ninety-eight molar teeth were selected. Once access cavities were prepared, teeth were divided randomly into three t...
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Materials and methods: Access cavities were prepared in 72 intact extracted premolar teeth. The samples were divided into three groups (n = 24) and filled with Coltosol, Compoglass, or Zonalin. After thermal cycling for 500 cycles (5–55°C), the teeth were immersed in 1% methylene blue dye at 37°C for 1 week (n = 8), 1 month (n = 8), and 2 months (n = 8). The samples were sectioned buccolinguall...
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Background Bonded indirect restorations are laboratory fabricated and requires at least two appointments: one for provisionalization and one for luting. In the first appointment, an impression is immediately taken after tooth preparation, followed by a provisional treatment, which traditionally consists of luting a temporary restoration. After the indirect restoration fabrication, the temporary...
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With the increasing use and complexity of urban natural gas pipelines, the occurrence of accidents owing to leakage, fire, explosion, etc. has increased. To analyze the scope of impacts of single-point fires associated with urban natural gas pipelines and the spread of urban fires caused thereby, this study analyzes single-point fires and the dynamic spread of fires by using a natural gas pipel...
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The contents of this report are published as received from Kiefner and Associates, Inc. The opinions, findings, and conclusions expressed in the report are those of the authors and not necessarily those of PRCI, its member companies, or their representatives. Publication and dissemination of this report by PRCI should not be considered an endorsement by PRCI or Kiefner and Associates, Inc, or t...
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ژورنال
عنوان ژورنال: IOP Conference Series: Materials Science and Engineering
سال: 2020
ISSN: 1757-899X
DOI: 10.1088/1757-899x/890/1/012165