نتایج جستجو برای: leakage parameter

تعداد نتایج: 245023  

2014
Mohamed Ali Khenissi Fathi Essalmi Mohamed Jemni Kinshuk Ting-Wen Chang

Working memory capacity is one of the most important learner's characteristics that can be used as an input parameter for personalizing learning in order to improve the learning process. Therefore, knowing learner’s working memory capacity and personalizing the learning contents according to learner’s working memory capacity levels are important research issues. This paper proposes an approach ...

Journal: :Minerals 2022

Leakage mitigation methods are an important part of reservoir engineering and subsurface fluid storage, in particular. In the context multi-phase systems e.g., CO2 a reduction intrinsic permeability is not only parameter to influence potential flow or leakage; parameters, such as relative capillary pressure, key parameters that likely be influenced by pore-space due leakage methods, induced pre...

2017
Guy Barwell Daniel P. Martin Elisabeth Oswald Martijn Stam

Authenticated encryption schemes in practice have to be robust against adversaries that have access to various types of leakage, for instance decryption leakage on invalid ciphertexts (protocol leakage), or leakage on the underlying primitives (side channel leakage). This work includes several novel contributions: we augment the notion of nonce-base authenticated encryption with the notion of c...

Journal: :Xibei gongye daxue xuebao 2023

The internal leakage fault-tolerant control problem of the electro-hydraulic servo actuator under influence multiple unmodeled dynamics is investigated in this paper, and an adaptive scheme based on estimation compensation proposed. model divided into two subsystems, which extended-state observers are respectively constructed to estimate matched mismatched dynamics. Combined with results dynami...

Journal: :Structural and Multidisciplinary Optimization 2023

Abstract Modeling of fluid flows in density-based topology optimization forms a longstanding challenge. Methods based on the Navier–Stokes equations with Darcy penalization (NSDP equations) are widely used optimization. These methods use porous materials low permeability to represent solid domain. Consequently, they suffer from flow leakage certain areas. In this work, governing for solid/fluid...

Journal: :iranian endodontic journal 0
hengameh akhavan dental school, islamic azad university of medical science, tehran, iran. anahid ahmadi faculty of dentistry, azad university of medical sciences peyman mehrvarzfar dental school, islamic azad university of medical science, tehran, iran. anahid ahmadi birjandi private practice

introduction : the aim of this study was to examine and compare the apical sealing ability of ah26, ah plus and ah plus jet using a fluid filtration model. materials and methods : 70 single-rooted teeth were dissected from the cement-enamel junction. canals were prepared with protaper rotary system and manual k files and irrigated with 5.25% naocl and 17% edta. ten teeth were assigned as contro...

Journal: :آب و خاک 0
محمد جواد موسوی سمیه نظامی ابراهیم ایزدی دربندی احمد نظامی مریم یوسف ثانی فاطمه کیخاآخر

abstract the aim of this experiment was the study of freezing tolerance of bellis perennis under controlled conditions and were arranged in a completely randomized design with three replications. plants after sowing and grow in the bed, at the middle of autumn (after hardening in natural conditions), in the 7-8 leaf stage put on the thermogradiant freezer with the 12 freezing temperatures (0,-2...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
seyed mohsen jalalzade mashhad, iran. elham khoshbin dental school, hamedan university of medical science, hamedan, iran seyed abdolkarim tabatabaei shahid beheshti university of medical science, tehran, iran. ghasem ansari dental school, shahid beheshti university of medical science, tehran, iran.

objective: the aim of this study is to measure the effect of different condensation pressure on the microleakage of mineral trioxide aggregate (mta).  methods: this study was an invitro study. a total of 55 single rooted straight-canal human extracted sound teeth free of cracks or calcification were selected. teeth were sectioned from cej region at 3 mm above the root apex. remaining specimens ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sedighe sadat hashemikamangar assistant professor, department of operative, dental school, tehran university of medical sciences, international campus, tehran, iran. maryam ghavam associated professor, dental research center, tehran university of medical sciences, tehran, iran. nazanin mahinfar dental student, tehran university of medical sciences, international campus, dental school, tehran, iran. mohammad javad kharazi fard department of epidemiology and biostatistics, faculty of public health, tehran university of medical sciences, tehran, iran.

the aim of this study was to assess the effect of 30% hydrogen peroxide on the microleakage of class v cavities restored with either a silorane-based composite or two methacrylate-based composites.a total of 96 standard class v cavities (1.5 × 2 × 3 mm) were prepared on the buccal surface of sound extracted human premolars with both enamel and dentin margins and randomly assigned into three gro...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra jaberi ansari department of operative dentistry dental school, shahid beheshti university of medical sciences. mojdeh kalantar motamedi department of operative dentistry dental school, shahid beheshti university of medical sciences.

microleakage is a main cause of restorative treatment failure. in this study, we compared occlusal and cervical microleakage of two self-adhesive cements after 24 hours and two months.in this in-vitro experimental study, class ii inlay cavities were prepared on 60 sound human third molars. composite inlays were fabricated with z100 composite resin. the teeth were randomly assigned to six groups...

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