نتایج جستجو برای: cementation deposit

تعداد نتایج: 19039  

Cementation factor is a critical parameter, which affects water saturation calculation. In carbonate rocks, due to the sensitivity of this parameter to pore type, water saturation estimation has associated with high inaccuracy. Hence developing a reliable mathematical strategy to determine these properties accurately is of crucial importance. To this end, genetic algorithm pattern search is emp...

Journal: :Frontiers in Earth Science 2022

The precise and quantitative characterization of reservoir properties is the key to efficient development tight oil reservoirs. In this paper, taking Chang 8 Member Yanchang Formation in Shuimogou area southern Ordos Basin as an example, sedimentary facies types, microscopic pore structures, diagenesis, influencing factors physical properties, hydrocarbon enrichment law reservoirs are systemati...

2004
A. A. Taha

The rate of copper II/zinc cementation from copper sulphate solutions in the absence and in the presence of methanol (CH3OH) and dimethyl sulphoxide (DMSO) has been studied and the reaction was found to follow first-order kinetics. The influence of several parameters on the course of the reaction, such as cylinder rotation speed, initial concentration of Cu ions, temperature and concentration o...

2013
Daehyeon Kim Kyungho Park Dongwook Kim

The purpose of this study is to understand the effect of ground conditions on microbial cementation in cohesionless soils. Since the method of microbial cementation is still at the experimental stage, for its practical use in the field, a number of laboratory experiments are required for the quantification of microbial cementation under various ground conditions, such as relative densities, rel...

2016
Jian-Xun Ren Dennis Chang Jian-Xun Liu

The pathophysiological characteristics of Phlegm-stasis Cementation Syndrome in Coronary Heart Disease (CHD) has been summarized in this article. According to epidemiological investigations, phlegm-stasis cementation syndrome has become a dominant syndrome in CHD along with the improvement in living and dietary condition. The interaction between blood stasis and phlegm turbidity that is called ...

Journal: :Journal 2009
Gildo Coelho Santos Maria Jacinta Moraes Coelho Santos Amin S Rizkalla

This article describes the different materials and techniques that are used for adhesive cementation. Particular attention is given to treatments suitable for dentin, as well as the selection of surface treatments for various restorative materials. Factors related to the durability and stability of the adhesive process, as well as the clinical and laboratory procedures required for cementation,...

2017
Kai Zheng Xiu-Chun Yu Yong-Cheng Hu Zhen Wang Su-Jia Wu Zhao-Ming Ye

BACKGROUND Intralesional excision with curettage is the standard method of giant cell tumor (GCT) treatment, but the ideal filling material after curettage remains controversial. The purpose of this study was to compare the oncological and functional outcomes which underwent cementation or bone grafting after GCT curettage around the knee. METHODS We reported 136 cases with GCTs in distal fem...

Ali Taheri, Molook Torabi-Parizi Parviz Amini, Shahrzad Taheri,

Background: Resin cements are widely used for cementation of FRC posts, but their bond strength can be influenced by cement type and cementation technique. The aim of this study was to determine the effect of type of resin cement and cementation technique on the bond strength of fiber posts. Methods: Forty five extracted mandibular premolars with a minimum roo...

2015
Pablo Sanz-Ruiz Manuel Villanueva-Martínez Jose Antonio Matas-Diez Javier Vaquero-Martín

BACKGROUND The increasing number of revision knee arthroplasty result in the more frequently use of a constraint implant but results from previous reports are difficult to interpret. The purpose of this study was to compare the long-term outcomes of superficial cemented versus metaphyseal cemented in revision total knee arthroplasty with a condylar constrained arthroplasty. METHODS The study ...

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