Finding the physical location of sensor nodes has already been considered in many directions. Typically, physical characteristics of radio and/or ultrasonic wave propagation are exploited to measure absolute or relative distances or orientation of nodes in Euclidean space. With that information at hand plain trigonometric computations, geometric approximations, multilateration techniques, or mu...

An experimental setup is designed to detect composite delamination damage based on ultrasonic infrared thermography. The ultrasonic infrared thermography system is composed by ultrasonic excitation system, infrared thermal imager and data acquisition system and two damaged composite plate specimens are produced in the experiment. The image processing methods including thresholding, filters, edg...

purpose: to assess the agreement of ultrasonic pachymetry, the galilei dual scheimpflug analyzer and orbscan ii in measuring central corneal thickness (cct) in normal and keratoconic eyes. methods: in this prospective comparative study, cct was measured in 88 refractive surgery candidates and 76 (39 right) eyes of 45 keratoconic patients using ultrasonic pachymetry, galilei and orbscanii. readi...

flavonoids, are a large class of polyphenols, with more than 4000 combinations. they have an antioxidant role in plant photosynthesis and in the human body they optimally act as an antioxidant, anti-inflammatory, anticancer and protector of the heart. quercetin is in the flavonol group that is used to fight protection specifically against viruses and cancer cells. in this study, comparison of e...

Article history: Received on: 09/03/2013 Accepted on: 07/05/2013 Available online: 30/05/2013 Paris fargesii is a famous Chinese traditional medicinal plant used as antipyretic, antidotal, antiphlogistic and analgesic. This research aimed at the determination of the total polysaccharides contents in P. fargesii, which were collected from Baoxing country of Sichuan Province in order to get the o...

Typically, to study the effects of consecutive earthquakes, it is necessary to consider definite intensity levels of the first shock. Methods commonly used to define intensity involve scaling the first shock to a specified maximum interstorey drift. In this study the structure’s predefined elastic spectral acceleration caused by the first shock is also considered for scaling. This study aims to...

In general the ultrasonic testing is used for flaw detection and localization in tested materials. Flaws in materials are commonly characterized in measured ultrasonic signals by faults echoes. Ultrasonic signals measured on materials with coarse grained structure contain relative high level of noise. This undesirable part of ultrasonic signal should be reduced to make the fault echo detection ...