In this study, the effects of three different independent variables (extraction temperature, extraction time, ultrasonic power) on total phenolic content, yield and antioxidant capacity (IC50) value olive leaf extracts Halhalı variety which is originated from South-eastern Anatolia Region were investigated. As a result evaluation made with Box-Behnken Design Model, optimum conditions determined...

Ultrasonic Irradiation (UI) is an emerging technology that used to assist the CO 2 absorption process. Even for slow kinetic solvents without using any chemical promoter, high-frequency UI might enhance mass transfer during For this purpose, it essential study performance of a ultrasonic-assisted system under varied operating conditions. The ultrasonic power considered as one main parameters . ...

Experimental analysis of conventional turning (CT) and ultrasonically assisted (UAT) two varieties particulate SiC infused aluminium metal matrix composite (217XG, 225XE) is carried out. The results indicate the amount tangential cutting force reduction in UAT compared to CT increased at lower speed higher depth-of-cut. using carbide tools reduced average forces by 60.5%, 29.5% for 217XG 225XE,...

Drying is one of the widely used methods of food preservation and it is a sensitive food processing operation due to undesirable changes in the quality of dried product. In this study the effect of osmotic dyhedration and ultrasound pretreatment prior to convective drying on quality properties of apple slices was investigated. Apple slices were pretreated by osmotic dehydration in two concentra...

Face seals operate by allowing a small volume of the sealed fluid to escape and form a thin film between the contacting parts. The thickness of this film must be optimised to ensure the faces are separated, yet the leakage is minimised. In this work the liquid film is measured using a novel ultrasonic approach with a view to developing a condition monitoring tool. The trials were performed in t...

The echo of a chirp of ultrasonic energy from an object contains information about the geometry of that object: relative depth of surfaces and approximate area of those surfaces. A human face has complex geometry that produces a distinctive echo. In this paper, we report initial research into whether there is sufficient information in the echo to recognize a still face. Potential features for c...

Abstract Background Papaya ( Carica papaya Linn.) is well known for its nutritional as medicinal value. Different parts of the plant including leaves have been used therapeutic remedies various diseases. The objective present study to determine impact different extraction methods; microwave-assisted, ultrasonic-assisted and conventional maceration on extract yield, polyphenols, flavonoids compo...

Ultrasound-assisted extraction (UAE) of phenolic compounds from Inula helenium was studied. Effects of ethanol concentration, ultrasonic time, solid-liquid ratio, and number of extractions were investigated. An orthogonal array was constructed to optimize UAE process. The optimized extraction conditions were as follows: ethanol concentration, 30%; solid-liquid ratio, 1 : 20; number of extractio...

Ultrasound operators in assisted reproductive technology units in New South Wales, Australia cooperated in a study that was conducted to assess their ability to measure fixed objects embedded in an ultrasound phantom. The results have demonstrated a large variation ranging between 10 and 25% coefficient of variation on distances between 10 and 32 mm. As ultrasonic imaging is the only component ...

The effect of ultrasonic vibration on the springback and surface property for ultrasonic-assisted incremental sheet forming aluminum alloy were discussed. A series experiments established to explore symmetrical in order facilitate analysis experimental results. It is obtained that application can reduce effect. waviness feature becomes weaker with continuous increase amplitude topography tends ...