The present work aims at proposing a rigorous analysis of the mathematical and numerical modelling of ultrasonic piezoelectric sensors. This includes the well-posedness of the final model, the rigorous justification of the underlying approximation and the design and analysis of numerical methods. More precisely, we first justify mathematically the classical quasi-static approximation that reduc...

Developing a facile method to prepare edible oleogels under moderate conditions would be of great interest. In this research, were obtained directly from the mixtures cellulose particles (average particle size ≈ 25 µm), sorbitan fatty acid esters (Span60 and Span40) medium chain triglycerides (MCT). Results showed that 6% (w/w) combined with 9% could form strong network trap oil phase through u...

In India major road accident is based on potholes. To identify this potholes and humps in roads may reduces the also damages cars bike. holes or speed breakers, ultra sonic sensor, display board buzzer used it. Project mainly prototype model of vehicle which has capable to find road. When hump it started showing distance obstacles, once obstacles reduced 10m range gives alarm signals drives tha...

background to achive natural and harmonic restoration color, shade matching is a commonly used method in dental practice using shade guides. to prevent infection,shade guides are required to be disinfected .using of disinfection solutions gradually affect the color of dental equipment. the aim of this study was to evaluate the effect of three disinfectants sodium hypochlorite solution 5/25%, de...

OBJECTIVE Sonic hedgehog is produced in gastric epithelial cells and plays a crucial role in parietal cell function and the regulation of gastric epithelial cell differentiation. Emerging evidence suggests that the sonic hedgehog pathway is not only involved in the development of cancers but also in their progression and aggressiveness. METHODS To assess its prognostic value in gastric cancer...

The core of the ultrasonic machining system is acoustic vibration component. Due to inconsistency assembly conditions between junction surfaces component, resonant frequency component after size adjustment horn low, and Impedance mismatch occurs in system. In this paper, considering influence conditions, optimal parameters were studied reduce surface’s on ultra-sonic horn’s performance paramete...

The red piranha, Pygocentrus nattereri, produces sounds by rapid contractions of a pair of extrinsic sonic muscles. The detailed innervation pattern of the sonic muscle of the red piranha was investigated. The sonic muscle is innervated by branches (sonic branches) of the third (S3so), fourth (S4so), and fifth (S5so) spinal nerves. The average total number of nerve fibers contained in the right...