In this chapter we define the topology of 2D asymmetric tensor fields in terms of two graphs corresponding to the eigenvalue and eigenvector analysis for the tensor fields, respectively. Asymmetric tensor field topology can not only yield a concise representation of the field, but also provide a framework for spatial-temporal tracking of field features. Furthermore, inherent topological constra...

Porosity is one of the key parameters associated with oil reservoirs. Determination of this petrophysical parameter is an essential step in reservoir characterization. Among different linear and nonlinear prediction tools such as multi-regression and polynomial curve fitting, artificial neural network has gained the attention of researchers over the past years. In the present study, two-dimensi...

background: the superiority of antipyretic efficacy of high dose rectal acetaminophen is not well established yet. objectives: the present study aimed to compare the antipyretic effectiveness of high loading dose (30 mg/kg) and standard dose (15mg/kg) of rectal acetaminophen in febrile children. patients and methods: this triple blind randomized clinical trial was conducted on 76 patients aged ...

Introduction: The medical applications of ultrasound on human brain are highly limited by the phase and amplitude aberrations induced by the heterogeneities of the skull. However, it has been shown that time reversing coupled with amplitude compensation can overcome these aberrations. In this work, a model for 2D simulation of the time reversal mirror technique is proposed to study the possibil...

colonoscopy overview — a colonoscopy is an exam of the lower part of the gastrointestinal tract, which is called the colon or large intestine (bowel). colonoscopy is a safe procedure that provides information other tests may not be able to give. colonoscopy is performed by inserting a device called a colonoscope into the anus and advanced through the entire colon. the procedure generally takes ...