Previous work has shown that individual deformation bands act like capillary barriers and influence fluid saturation. More common in nature, however, are clusters of form complex three dimensional geometries. The aim this study is to analyze the extent mechanisms compartmentalization due clustered bands. Drainage multiphase flow experiments were performed on a Navajo sandstone core sample chara...

To study the microscopic seepage mechanism of gas and water in fractured sandstone reservoirs low porosity, this kind reservoir Keshen field, Kuqa depression Tarim basin China, was taken as an example. Based on rock samples visualization technology, nuclear magnetic resonance experiments saturated water–gas drive CT scanning gas–water were conducted. The invasion during development simulated. S...

Non-destructive measurements of contaminated soil core samples are desirable prior to destructive measurements because they allow obtaining gross information from the core samples without touching harmful chemical species. Medical X-ray computed tomography (CT) and time-domain low-field nuclear magnetic resonance (NMR) relaxometry were applied to non-destructive measurements of sandy soil core ...

the presence of anatomic variations of paranasal sinuses must be noted in order to attain a full understanding and accurate diagnosis of chronic sinusitis. the frequency of anatomic variations in chronic sinusitis is different in various studies. the purpose of this study is to assess the frequency of anatomic variations in chronic sinusitis patients admitted to otolaryngology ward of shahid sa...

introduction in ct imaging, metallic implants inside the tissues cause metal artifact that reduce the quality of image for diagnosis. in order to reduce the effect of this artifact, a new method with more appropriate results has been presented in this research work. materials and methods the presented method comprised of following steps: a) image enhancement and metal areas extraction, b) sinog...

There is usually no information about permissible error of current transformers in modes succeed by large relative short-circuit current, at which microprocessor-based protections operate stably. By this reason, it necessary to use data, defined for analog relays. It leads value appreciation a project because often essential reduce transformers’ case short circuit fault. Therefore, define the e...

Owing to the large magnitude of inrush currents, functionality differential protection power transformer may be threatened in correct discrimination between and internal faults. This article enhances through a computationally efficient method that utilizes phase angle current signals transformers (CTs). The proposed criterion (PDC) tracks fundamental CTs. While during an fault, angles both CTs ...

Background: Fat embolism syndrome (FES) is caused by a systemic inflammatory response arising from embolized fat particles that block blood vessels and disrupt supply, particularly in the respiratory microcirculation. Despite its high morbidity mortality, FES still challenging to diagnose due versatile symptoms. Case Presentation: In this article, we describe case reports of two patients with p...