A compact printed fractal antipodal bow-tie antenna is designed and implemented to simultaneously cover the operations in the C, X, and Ku-bands. It is demonstrated that by addition of small fractal elements at the sides of hexagonal arms of the bow-tie, a wide operating frequency range of 3.3 to 19.1 GHz can be covered while antenna size is only 30×34×1.2 mm3. In order to match the antenna to ...

An ultra-wideband (UWB) self-complementary planar bow-tie antenna (SCPBTA) is proposed. The antenna consists of a printed conical horn-shaped (CHS) radiator and a counterpart CHS slot etched on a rectangular ground plane. The printed CHS radiator is connected directly to the 50Ω microstrip line by bending the end portion of the feed line. As a result, the antenna has a simple structure which do...

Objective(s):One cause of cigarette smoking is oxidative stress that may alter the cellular antioxidant defense system, induce apoptosis in lung tissue, inflammation and damage in liver, lung, and kidney. It has been shown that Chinese green tea (CGT) (Lung Chen Tea) has higher antioxidant property than black tea. In this paper, we will explore the preventive effect of CGT on cigarette smoke-in...

ntroduction: Electrocautery device is one of the most widely used electronic devices in operating rooms despite its advantages in operations, production risks such as the halo of smoke above the operating position. The smoke with hazardous substances,cause to transmitting HIV, HPV and hepatitis and complications such as respiratory distress, nausea and vomiting, eye irritation, headache, and so...

mother's and infant exposure to cigarette smoke is one of the most important public health problems. there is no study in iran evaluating the impact of cigarette smoke on infant growth and development. the purpose of this study was to determine the effects of cigarette. this prospective cohort study was conducted on 51 cigarette smoke-exposed infants (exposed group) and 51 non-exposed infants (...

this study was initiated to assess the effectiveness of designating smoking rooms to control environmental tobacco smoke in nursing homes. of the 39 nursing homes located in toledo (a city in ohio, usa) included in the preliminary survey, 33 facilities (85%) allowed smoking, 14 facilities (36%) allowed indoor smoking, and 13 facilities (33%) provided a designated smoking area. three of these 13...