نتایج جستجو برای: dimensional modeling by hec

تعداد نتایج: 7438300  

2008
James T. Mackey Isabel PEDRAZA

When the transition of operational activities is framed not as an instantaneous optimization problem but rather a series of incremental opportunistic choices formal continuous improvement (CI) capabilities prove useful. However, despite the well documented advantages of CI management, implementation failures are discouragingly high (Jazayeri and Hopper, 1999). In the quality literature the most...

2014
E. Oguzie

Hydroxyethyl cellulose (HEC) was studied as corrosion inhibitor for mild steel and aluminium in 0.5 M H2SO4 solution using weight loss and electrochemical techniques. The results revealed that HEC inhibited corrosion of mild steel and aluminium in sulphuric acid environment. Inhibition efficiency was found to depend on concentration of the inhibitor. Impedance results revealed that HEC was adso...

Journal: :Physical review 2022

The holographic entropy cone (HEC) characterizes the entanglement structure of quantum states which admit geometric bulk duals in holography. Due to its intrinsic complexity, date it has only been possible completely characterize HEC for at most $n=5$ parties. For larger $n$, our knowledge falls short incomplete: almost nothing is known about extremal elements. Here, we introduce a symmetrizati...

The performance prediction of axial flow compressors at different speeds and under various pressure ratio conditions are still being developed because of costly empirical experiments. One-dimensional modeling is a simple, fast and accurate method for performance prediction in any type of compressor with different geometries. In this approach, inlet flow conditions and compressor geometry are kn...

Journal: :Seizure 2011
Dawn S. Carter Laxmikant S. Deshpande Azhar Rafiq Sompong Sombati Robert J. DeLorenzo

Epilepsy, a common neurological disorder, is characterized by the occurrence of spontaneous recurrent epileptiform discharges (SREDs). Acquired epilepsy is associated with long-term neuronal plasticity changes in the hippocampus resulting in the expression of spontaneous recurrent seizures. The purpose of this study is to evaluate and characterize endogenous epileptiform activity in hippocampal...

Journal: :journal of mechanical research and application 2011
mohammad eftari hamid javaniyan jouybari majid reza shahhoseini farhad ghadak manuchehr rad

design models of multi- stage, axial flow compressor are developed for gas turbine engines. axial flow compressor is one of the most important parts of gas turbine units. therefore, its design and performance prediction are very important. one-dimensional modeling is a simple, fast and accurate method for performance prediction of any type of compressors with different geometries. in this appro...

Journal: :medical journal of islamic republic of iran 0
maryam koopaie department of oral and maxillofacial medicine, school of dentistry, tehran university of medical sciences, tehran, iran. sajad kolahdouz department of mechanical engineering, amirkabir university of technology, tehran, iran.

background: a comprehensive database, comprising geometry and properties of human teeth, is needed for dentistry education and dental research. the aim of this study was to create a three-dimensional model of human teeth to improve the dental e-learning and dental research.   methods: in this study, a cross-section picture of the three-dimensional model of the teeth was used. ct-scan images wer...

Journal: :iranian endodontic journal 0
sara ehsani dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, evin, tehran, iran fatemeh sadat mirhashemi ph.d student, mechanics of agricultural engineering, ferdowsi university of mashhad, mashhad, iran. dental research center, research institute of dental sciences of shahid beheshti university of medical sciences, tehran, iran saeed asgary iranian center for endodontic research, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran

introduction: mandibular first molar is the most important tooth with complicated morphology. in finite element (fe) studies, investigators usually prefer to model anterior teeth with a simple and single straight root; it makes the results deviate from the actual case. the most complicated and time-consuming step in fe studies is modeling of the desired tooth, thus this study was performed to e...

ژورنال: آبخیزداری ایران 2022

The most important problem in estimating floods is the lack of sufficient statistics and consequently the lack of evaluation of the appropriate amount of flow. One of the flood estimation methods in these basins is the use of hydrological modeling. In this study, Shahbahram river flood modeling was performed with Nazmkan hydrometric station located in Kohkiluyeh Boyer-Ahmad province with HEC-HM...

Journal: :Journal of Advanced Ceramics 2023

There has been growing interest in the high-entropy ceramic (HEC) recently owing to its tailorable compositions and microstructures, versatile properties, together with promising structural functional applications. However, inferior fracture toughness (KIC) damage tolerance restricted many practical applications of HEC. Herein, we addressed this challenge by incorporating a th...

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