The Chehel Kaman Formation of the upper Paleocene age formed from carbonate and siliciclastic sediments is located, in the Kapeh Dagh Sedimentary Basin. Two sections where considered for the purpose of research into the effective diagenetic processes of this formation. The Cheshmeh Qorban section with a thickness of 270.8m located 140km down the Mashhad – Sarakhs Highway while the Shourlog Sect...

Thin-walled bars with an open cross-section are widely used in mechanical structures where weight and size control particularly required. Thus, this paper attempts to propose a theoretical model for predicting the properties of thin-walled bar under restrained torsion. Firstly, predictions shear stress, buckling normal secondary stress condition torsion was developed based on theory. Then, phys...

Secondary pores are the main reservoir space and transportation channel of oil gas in reef limestone reservoir. At present, method calculating secondary porosity is restricted by morphological characteristics spectrum, regional artificial influence, accuracy calculation. We present a new for nuclear magnetic resonance T...

Piezoelectric thin films offer a number of advantages in various applications, such as high energy density harvesters, a wide dynamic range, and high sensitivity sensors, as well as large displacement and low power consumption actuators. This review covers the available material forms and applications of piezoelectric thin films: lead zirconate titanate (PZT)-based thin films, lead-free piezoel...

in order to study the biostratigraphy and paleoecology of the early miocene in south west of kerman province, one section (gefriz) has been chosen, measured and sampled. the thickness of measured section is about 67 m. it consists mainly of thin to thick bedded limestone and marl. at this section, the early miocene deposits nonconformably lie between volcano sedimentary eocene at the base, and ...

PURPOSE To assess retrospectively the effect of the Joint Photographic Experts Group 2000 (JPEG2000) compression ratio on the quality of thin-section computed tomographic (CT) images. MATERIALS AND METHODS In this institutional review board-approved investigation (protocol 238/2004), thin-section CT images were subjected to irreversible JPEG2000 compression by using five compression ratios (3...

An accurate reservoir characterization is a crucial task for the development of quantitative geological models and reservoir simulation. In the present research work, a novel view is presented on the reservoir characterization using the advantages of thin section image analysis and intelligent classification algorithms. The proposed methodology comprises three main steps. First, four classes of...

PURPOSE To evaluate thin-section computed tomographic (CT) characteristics of malignant nodules on the basis of overall appearance (pure ground-glass opacity [GGO], mixed GGO, or solid opacity) in comparison with the appearance of benign nodules. MATERIALS AND METHODS Institutional review board approval and patient consent were obtained. Follow-up diagnostic CT was performed in 747 suspicious...

STUDY OBJECTIVES To describe the radiologic and clinical findings of Churg-Strauss syndrome (CSS) and its thoracic manifestations. DESIGN We used retrospective analysis to review and characterize the radiographic, thin-section CT, and clinical findings of CSS. PATIENTS The study involved nine patients with CSS. The patients included four men and five women, whose ages ranged from 18 to 60 y...