Vaccination is a safe and effective approach to prevent deadly diseases. To increase vaccine production, we propose that a mechanical stimulation can enhance protein production. In order to prove this hypothesis, Sf9 insect cells were used to evaluate the increase in the expression of a fusion protein from hepatitis B virus (HBV S1/S2). We discovered that the ultrasound stimulation at a frequen...

Analytical chemistry is one of the chemical areas where ultrasonic radiation has been only infrequently used (namely in sample pretreatment, separations, automatic analytical systems and clinical analysis). This auxiliary technique would constitute a powerful aid in the automation of several steps in analytical processes: its advantages and disadvantages, as well as its use and potential in the...

Introduction: Sonophoresis has been assessed as a novel approach to create skin permeability and drug delivery using low frequencies of ultrasound waves in the range of 20 kHz to 3 MHz. In this study, a system including seven 40 kHz piezoelectric transducers and an insulin chamber designed by the Medical Physics Research Center has been evaluated on hyperglycemic rabbits. Materials and Methods:...

*Corresponding author: A. Shakeri-Zadeh, Ph.D. Medical Physics Department, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran E-mail: shakeriz@iums. ac.ir Ultrasound is an exciting theranostic modality that plays a critical role in diagnostic and treatment of various diseases [1, 2]. Owing to its non-invasive nature, acceptable safety, low cost and easy handling, ultra...

Introduction Several methods for the acceleration of the healing process have been used, including electrical stimulation. Electromagnetic fields (EMFs) have direct biological effects on endochondrial cells and enhance the formation of callus (Gupta et al., 1991). Ultrasound is currently used for the diagnosis of osteoporosis (R. Strelitzki et. al., 1996). In this case, two ultrasound transduce...

The two-location field experiment was conducted to study the possible alleviation of droughtstress effects on red bean by ultrasonication and 24-epi-brassinolid. Locations were AgriculturalResearch Center in Shahrood, Iran and the other in bean farm, 40 km off Shahrood city in 2015.Experiment factors included irrigation of main plots at three levels of normal irrigation (60 mmevaporation from e...

BACKGROUND Hemodialysis is a process of removing waste and excess fluid from blood when kidneys cannot function efficiently. It often involves diverting blood to the filter of the dialysis machin to be cleared of toxic substances. Fouling of pores in dialysis membrane caused by adhesion of plasma protein and other toxins will reduce the efficacy of the filtre. OBJECTIVE In This study, the inf...

U ltrasound (USS) or ultrasonic imaging is now a mature technology having a well-established place in clinical practice and accounting for about one in four of all imaging procedures worldwide (1). More recently, USS has become the latest noninvasive method of morphological study to aid or supplement the teaching of gross human anatomy in some medical school curricula (2 6). Indeed, an expandin...

Ultrasound waves propagating in water or soft biological tissue are strongly reflected when encountering the skull, which limits the use of ultrasound-based techniques in transcranial imaging and therapeutic applications. Current knowledge on the acoustic properties of the cranial bone is restricted to far-field observations, leaving its near-field unexplored. We report on the existence of skul...