نتایج جستجو برای: ultrasound power
تعداد نتایج: 592500 فیلتر نتایج به سال:
in this research,the effect of power ultrasound (20 khz ,800 and 1000w) at 20.40 and 60 minutes on physico-chemical properties of two rice varieties tarom and neda was investigated and by the soaking method in controlled temperature (47°c) compared.results showed the maximum amount of water absorption of rice, observed at 60 minutes ultrasound treatment (1000w) and the lowest was observed in co...
Background: It is better to use agricultural by-products or waste for microbial production to reduce costs in the industry. Whey is one of the by-products that are rich in nutrients like vitamins, proteins and essential amino acids. Low-intensity ultrasound stimulation can improve membrane permeability and also help optimize the growth and reproduction of cells. According to high efficiency of ...
Sequential ultrasound-microwave associated extraction (SUMAE) is a combination of ultrasound waves and microwaves energies in which ultrasonic extraction is used as a pretreatment. It was performed to extract essential oil from Zataria multiflora. The extraction conditions were optimized by response surface methodology (RSM) and Central Composite Design (CCD). The antioxidant and antibacterial ...
objective: the effect of ceftazidime on pseudomonas aeruginosa, with or without application of 1 mhz therapeutic ultrasound, was studied. method: an aqueous suspension of microorganisms in a sterile, sealed plate was placed in an ultrasonic tank operating at 1 mhz. different power outputs were used. after desired time of exposure to the ultrasound, each sample was plated separately and after in...
purpose: to evaluate the effect of vacuum and flow rate on endothelial cell loss after high versus low vacuum phacoemulsification. methods: this randomized clinical trial was performed on 60 eyes of 60 patients with moderate lens opacity (nuclear sclerosis 3+). all surgeries were performed by one experienced surgeon using stop and chop technique with sovereign white star machine (amo). patients...
The ability to sense and respond to physical stimuli is an important key of the life. It was recognized that ultrasound as a physical stimulus could produce drastic changes in biological systems. High-intensity ultrasound is well known to be destructive to biological materials, but low-intensity ultrasound, on the other hand, has shown a range of biological effects with potential significance i...
Background: In this study, we investigated the diagnostic power of ultrasound in the diagnosis of malignancy in thyroid nodules in Iranian patients. For this purpose, we examined the relationship between ultrasound findings and pathology findings. Methods: The present study is a retrospective study. The patients with a diagnosis of thyroid nodules who underwent ultrasound and FNA, were include...
despite the potential of high intensity ultrasound treatment on homogenization of milk and dairy based products, this treatment, under certain conditions, may lead to produce off-odors which can influence its applicability in the food industry. therefore, in this research, cacao flavored milk (chocolate milk) was treated using ultrasound at various levels of power intensity, exposure time, and ...
Ultrasound can be used both simultaneously or as a pretreatment technique for flotation to produce higher combustible recoveries, higher heat values, and lower ash data from raw hard coals. The recent research works have indicated that modifying coal surfaces, especially physical surface cleaning with the help of the cavitation process created by power ultrasound at certain frequency and time i...
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