نتایج جستجو برای: standing wave ratio
تعداد نتایج: 746865 فیلتر نتایج به سال:
Nomination and voting for this election is governed by conference standing order 74. With the exception of those standing for the ‘seventh seat’, candidates do not have to be a representative of a local medical committee at conference. Nominations may be made only by representatives of a local medical committee at conference. A representative may make ONLY ONE nomination. Elections, i...
Standing-wave excitation of fluorescence is highly desirable in optical microscopy because it improves the axial resolution. We demonstrate here that multiplanar excitation of fluorescence by a standing wave can be produced in a single-spot laser scanning microscope by placing a plane reflector close to the specimen. We report here a variation in the intensity of fluorescence of successive plan...
This paper presents a method to seamlessly extend the coverage of energy supply field for wireless sensor networks in order to free sensors from wires and batteries, where the multi-point scheme is employed to overcome path-loss attenuation, while the carrier shift diversity is introduced to mitigate the effect of interference between multiple wave sources. As we focus on the energy transmissio...
Curl and truncated spiral antennas are studied for input impedance matching a coaxial line. Each antenna is located at quarter wavelengths above the ground plane analyzed using moment method. It found that curl shows voltage standing wave ratio (VSWR) of less than two in 3-dB axial bandwidth 30% crank feedline with an unbalanced feed. also has 24%, where VSWR remains parallel feedlines quasi-ba...
Steep, short-crested waves, as well as a large variety of three-dimensional propagating wave patterns have been created in laboratory, utilizing a plunging half-cone. Monochromatic waves, over a range of frequencies and amplitudes through breaking and including soliton wave groups near resonance, have been observed and studied in a small wave flume. This monochromatic wavemaker creates complex ...
background: standing workstation can be a strategic approach for many electronics manufacturers to achieve work optimization. however, the well-being of the workers has become a great issue for both workers and employers. the main objective of this research was to study the effects of standing working posture on the workers and their impact to workers’ health and productivity and then to re-des...
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