The process of ultrasonic-enhanced compound-enzymes-assisted extraction of polysaccharides from the fruit of Cornus officinalis was optimized by response surface methodology (RSM). The influence of three different factors on the yield of C. officinalis polysaccharides (COP) was studied. The results showed that the optimal conditions were extraction temperature 49.6 °C, ultrasound time 40.41 min...

Various extraction techniques were applied in the extraction of the biologically active constituents. The methods employed were traditional maceration extraction, microwave-assisted extraction(MAE), and ultrasound extraction (UE). Compared to the maceration extraction, MAE and UE methods provided high extraction yield, requiring short time frames and less labour. Microwave irradiation is a prov...

Ultrasonic-assisted plastic micro-forming is a research hotspot in metal-forming process. The friction characteristic key factor affecting the properties of metal ultrasonic-assisted However, existed researches were mostly focused on characteristics free surfaces, while few studied between sample and mold cavity. In this paper, micro double cup extrusion experiments copper T2 conducted to inves...

Mangiferin is a xanthone widely distributed in higher plants showing antioxidative, antiviral, anticancer, antidiabetic, immunomodulatory, hepatoprotective and analgesic effects. In the present study, an ultrasonic-assisted extraction method was developed for the effective extraction of mangiferin from mango leaves. Some parameters such as ethanol concentration, liquid-to-solid ratio, extractio...

Ultrasonic-assisted extraction was employed for highly efficient separation of aroma oil from raspberry seeds. A central composite design with two variables and five levels was employed and effects of process variables of sonication time and extraction temperature on oil recovery and quality were investigated. Optimal conditions predicted by response surface methodology were sonication time of ...

This paper explores the superposition of ultrasonic vibration on vertical rotating augers in a variety granular media. Ultrasonic is known to facilitate direct penetration media, and it anticipated that any related reduction torque requirements system might improve augering performance. Experimental results suggest that, compared non-ultrasonic scenario, ultrasonically assisted significantly pr...

Objective: To evaluate marginal discrepancies between cast implant superstructure and EDM processed implant structure. Materials and methods: For the purpose of this study, an experimental model was prepared on which nine cast implant superstructure in nickel-chromium were fabricated which was then subjected to EDM processing. One-screw test was used to verify fit of superstructure both preand ...

tea is one of the most important medicinal plants which have a considerable effect on the treatment of cardiovascular disease and cancer. the drying process of tea leaves is carried out by hot air flow which consumes high level energy. the aim of the recent research was to investigate the procedure of high power ultrasound-assisted drying process of tea leaves. hybrid variety of chinese tea was...

This paper presents a simple concept and design for a travel aid for the visually impaired. The proposed device uses ultrasonic signal in sensing and detecting an object (obstacles). The aid can inform the user about the distance of the detected obstacles by means of tactile vibrations. A prototype device called the intelligent walking stick (INSTICK) was developed under this concept. The INSTI...

Chip-on-film (COF) technology has been developed for liquid crystal displays (LCD) due to its high yield capability in fine pitch products. In this study, a new COF thermosonic (TS) bonding process using anisotropic conductive adhesive and ultrasonic vibrations will be introduced. Si chips with 16 cylindrical Cu bumps (¤100μm) and polyimide (PI) film substrate with a thickness of 70 μm were pre...