Antenna mechanism

Since the antenna mechanism is an indirect route, there are probabilities associated with each of the processes, i.e.,... 

Wang, C.Y., R. Pagel, J.K. Dohrmann and D.W. Bahnemann (2006a). Antenna mechanism and deaggregation concept Novel mechanistic principles for photocatalysis. Comptes Rendus Chimie, 9(5-6), 761-773. 

Cryo-TEM is a combination of cryo techniques with TEM, which allows observation of the nanoparticles in their native environment [74,75]. Thus, the observation by cryo-TEM indicates that three-dimensional TiC>2 networks indeed exist in aqueous suspensions. Based on this observation, the authors propose a novel mechanism that is shown in Fig. 3, i.e., the so-called antenna mechanism. 

Fig. 3 The Antenna Mechanism (reproduced from [74] with permission from the Royal Society of Chemistry)...

Under mechanical and environmental stresses, composites are dimensionally stable. They maintain their shape and functionaHty, a critical requirement in such appHcations as dish antennas, constmction girders, and in appHance and business machines. Color and surface texture can often be molded into an FRP product for long lasting, low maintenance permanent surface appearance. Boats are a good example. The surface color is molded in and requires minimum maintenance, an advantage in saltwater environments. 

Dimensional analysis techniques are especially useful for manufacturers that make families of products that vary in size and performance specifications. Often it is not economic to make full-scale prototypes of a final product (e.g., dams, bridges, communication antennas, etc.). Thus, the solution to many of these design problems is to create small scale physical models that can be tested in similar operational environments. The dimensional analysis terms combined with results of physical modeling form the basis for interpreting data and development of full-scale prototype devices or systems. Use of dimensional analysis in fluid mechanics is given in the following example. 

Such a process can naturally be expected to play a certain part in the mechanism of directed energy transport in biological systems, in particular, in the transfer of absorbed energy from the antenna chlorophyll molecules to the reactive center in the photosynthetic system of plants. In Ref. [30], energy exchange between molecules of the photosynthetic pigments chlorophyll a and pheophytin a was studied experimentally with pigments introduced into the polar matrix. 

A mechanical analogy can be done we must anticipate that there will be very little coupling between GW and ordinary matter. In fact, we know that sound waves in common materials couple efficiently from one body of density p, and sound velocity vx to another of density p2 and sound velocity v2 if the product p, p, = p2v2. The product pv is called the sound impedance per unit area and has dimension of kg/m2s. For an antenna made of copper with a surface area of 1 m2, the impedance is 3 x 107 kg/s. For space-time this would be ... 

A practical limit to the sensitivity is also given by noise source external to the apparatus. Multistage mechanical filters are always used. We wish now to examine the possibility of realizing a gravitational antenna of the spherical shape. 

Another important difference between bistatic and monostatic radar is that a directional receive antenna must scan at a non uniform rate to follow the position of the transmitted signal through space, a process known as pulse chasing. This can be very challenging for designs based upon mechanical scanning and hence an alternative is to use one or more electronically agile beams as in phased array radar. Such phased array antennas can be expensive and in some applications will prohibit the use of the bistatic technique. 

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