... in sludge used for application on agricultural soils The data of the contents of POPs in the set of sewage sludge were processed for the assessment of their “background values” The 90% percentile ... find the explanation for the respecting of this limit by the comparison of limit values of PAHs and PCDDs/Fs in the sludge and their background values in the soil for example The content of PAHs ... of the content of POPs in the set of sewage sludge with the limit values of POPs in sludge in Czech and European legislative norms we get following results The value of the sum of congeners of...
Ngày tải lên: 28/06/2014, 08:20
... limit For sufficient sensitivity of the mass analysis, the analytes should elute with a maximal proportion of organic solvent into the ion source On the other hand, the LC should lead to the separation ... period of h The results are shown in Table The amount of CEdG formed during the DHA incubation of the vector pGL3 Control increased with both incubation time and quantity of glycating reagent The ... value of each sample to the mean ratio of the unmodified pGL3 Control vector The results of the luciferase reporter gene assay with the CEdG-modified vector showed that the plasmid with the highest...
Ngày tải lên: 30/03/2014, 04:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 4 ppt
... probe on the other side A small hole can be drilled on the other side of the cavity to allow the output of the modulated LASER to be coupled to the IMPATT chip via a piece of optical fiber The intensity ... it develops between the phase of π to 2π (Figure 4) The width of the drift region is so adjusted that the transit time of carriers is half the period of the ac cycle Thus the total phase lag ... (XD) In the oscillating frequency range, the magnitude of RD < XD, and thus the device reactance is approximately that of the capacitance formed by the depletion layer of the device In the DDR...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 5 ppt
... downconvert the signal to IF frequency The photograph of this experimental setup is shown in Fig The VSA software in PC will capture the data of the PA The captured data can then import to Matlab for ... MHz For example, for WiMAX standards, the specified bands are between 100 and 200 MHz Therefore, RF filters have wide pass-bands and the ratio between the bandwidth of the pass-band and the central ... quite stringent: The larger the frequency offset, the easier these filters Typical values of frequency offset are 50 to 100MHz For example, in GSM 900 standard, the transmitter uses the uplink frequency...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 6 pdf
... antenna The total pattern of the system is computed by the sum of secondary field and the primary field of the feed element For the majority of feeds like horn antennas, the primary pattern in the ... addition, the direction of the reflected ray and the point of intersection of the reflected ray with the aperture plane are obtained by use of geometrical optics These fields comprise the aperture ... at the focal point of a parabola forms a beam parallel to the focal axis Therefore, the only difference between fields on S and S is the constant phase because of the distance between the...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 7 potx
... Fig 4, the lower the pass-band ripple, the smoother are the element values In the limiting case, the values of the central elements are close to gi=2 Moreover, the higher the filter order, the better ... the self-resonance of the interdigital capacitors The frequency response of the right-handed region is not as good as the left-handed region The other drawback is the high insertion loss of the ... in the divider The maximum speed of operation of the divider circuit shown in Fig.13 can be determined by the sum of the delays of each transition The D latches have two basic operations The...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 10 potx
... minimising the overlap between the current and voltage waveforms In the other part of the period, the active device is turned off acting as an open circuit Therefore, the current is theoretically ... detail, the center frequency of the BPF is set at the end of the band(18GHz or 20GHz here), which is called the cut-off frequency in the gain equalizer design, with the ripple level of 0.1dB and the ... C1 (22) where the expression in the integral represents the voltage across the capacitance C1 during the OFF period The value for the inductance L is therefore given by: L 2 ...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 11 ppt
... where θs is the angular size of the extended radio source In the case of the uniform source brightness distribution θs is the physical angular size of the source disk In the case of the Gaussian ... using the basic unit of the CRLH-TL in Fig is to determine the values of the elements (CLi, LLi, CRi, LRi) that produce the performances appropriate to the UWB BPF We adopt the concept of the Balanced ... lobe, the expressions (18) and (22) for the circular and rectangular antenna patterns describe the shape of antenna pattern of real antennas fairly accurately, for the s > the accuracy of the theoretical...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 13 pdf
... the number of levels is, the higher the diffraction efficiency is, however, the higher the difficulty of manufacture becomes Therefore, the compromise between the diffraction efficiency and the ... Fresnel-Kirchhoff diffraction integral formula based on scalar theory is not suitable for calculating the diffractive field The Stratton-Chu formulas are one of the most powerful tools for the analysis of ... selection Last, the GA process is terminated after a prespecified number of generations Genmax The flow chart of the GA procedure is shown in Fig 11 Fig 10 Division of the BOE profile into the rings...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 14 pptx
... function for the pulse-limited footprint be of the form (3) Then, the following algorithm to estimate the wind vector over the sea surface can be proposed The wind speed can be obtained by means of ... the required azimuth angular sizes of cells of the first annulus 1 and the second annulus 2, as shown in Fig 4, the frequency limits of the fore-Doppler filter FD1.f and FD 2.f , and of the ... to the radiative transfer theory in the microwaves by using the Rayleigh-Jeans formulation and a description of the absorption and scattering processes associated with the Mie theory with the...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 15 potx
... quite close to the ideal cases of the theoretical description of the atmospheric extinction processes and simply represent a rough fitting of the theory Many aspects predicted by the theory are neglected ... for comparison As expected, the agreement between the SI and the 183-WSLC (convective) is higher than the one between the SI and the 183-WSLS (stratiform) The reason refers to the nature of the ... n n (3) The values of J on the left-hand side of this equation are the source terms They represent the known excitations The elements of the Y-matrix are functions of the analyzed problem...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 16 docx
... shown in §§ 1.3 (theory) and 2.3.1.2 (experiment) This is our main point in favour of a resonance effect for the FWE The time Ca is the one required for performing the process of Ca2+ liberation ... barrier for the passage of those currents to the intracellular medium, except for a small reduced fraction Therefore if the ELF-EMFs have to produce any effects inside the living cells perhaps they ... deposited in the cell This energy is really negligible either against the atomic ionization energy for the whole cell atoms (of the order of 10 eV/atom, the Van der Waals binding energies of ≈ 0.06...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave Technologies Devices, Circuits and Systems Part 17 ppt
... which also forms the CD for the worst month in the region from 170 mm/h to mm/h The CD for the worst month for the rain intensities smaller than mm/h forms the pertinent part of the CD for September ... 21 dB by the pertinent part of the CD for July 2007, for the attenuation between 21 dB and dB by the pertinent part of the CD for August 2007 and for the attenuation smaller than dB by the pertinent ... path for the worst month over the one-year period is formed for the attenuation between 34 dB and dB by the pertinent part of the CD for August 2007 and for attenuation smaller than dB by the...
Ngày tải lên: 21/06/2014, 06:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 1 doc
... pyramid, or the like, causes the gaseous products formed from the initiation of the explosive at the end of the cylinder opposite the hollow cavity to focus the energy of the detonation products The ... receive the analytical decision of a task as a first approximation at the assumption, that the process of formation of a jet follows the laws of the stationary expiration In [17] on the basis of the ... coefficient of specific heat of body material, L- the scale of irregular warning up of the material in the given condition, probably having the size similar to the size of the grain on the surface of the...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 2 pot
... to the change of VD (drain lag) is regarded as predominant for the cases of higher VDoff Fig.10 shows (a) electron density profiles and (b) NDD+ profiles in the off state for the two cases The ... way that the absorption band of the activated resonator would be then shifted far away from the operation frequency band of the filter The response of the filter will change: shift of the absorption ... account the deviation from the theoretical values of the materials constants used for the simulation response and by taking care to the micro fabrication tolerances) .The tunability of the filter...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 4 doc
... probe on the other side A small hole can be drilled on the other side of the cavity to allow the output of the modulated LASER to be coupled to the IMPATT chip via a piece of optical fiber The intensity ... it develops between the phase of π to 2π (Figure 4) The width of the drift region is so adjusted that the transit time of carriers is half the period of the ac cycle Thus the total phase lag ... (XD) In the oscillating frequency range, the magnitude of RD < XD, and thus the device reactance is approximately that of the capacitance formed by the depletion layer of the device In the DDR...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 5 potx
... downconvert the signal to IF frequency The photograph of this experimental setup is shown in Fig The VSA software in PC will capture the data of the PA The captured data can then import to Matlab for ... MHz For example, for WiMAX standards, the specified bands are between 100 and 200 MHz Therefore, RF filters have wide pass-bands and the ratio between the bandwidth of the pass-band and the central ... quite stringent: The larger the frequency offset, the easier these filters Typical values of frequency offset are 50 to 100MHz For example, in GSM 900 standard, the transmitter uses the uplink frequency...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 6 docx
... antenna The total pattern of the system is computed by the sum of secondary field and the primary field of the feed element For the majority of feeds like horn antennas, the primary pattern in the ... addition, the direction of the reflected ray and the point of intersection of the reflected ray with the aperture plane are obtained by use of geometrical optics These fields comprise the aperture ... at the focal point of a parabola forms a beam parallel to the focal axis Therefore, the only difference between fields on S and S is the constant phase because of the distance between the...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 8 ppt
... tdiel are the thicknesses of the air and dielectric layers beneath the membrane Due to the importance of the surface roughness on the device performance there has been an intensive effort on the modeling ... established The basic assessment methods rely on the monitoring of the shift of bias for capacitance minimum, V zd and the pull-down and pull-up r voltages The shift of the bias for capacitance ... from mechanisms such as the orientation of dipoles, the buildup of space charge etc in the presence of the electric field It must be emphasized that the magnitude and sing of the time-dependent polarization...
Ngày tải lên: 21/06/2014, 10:20
Advanced Microwave and Millimeter Wave technologies devices circuits and systems Part 9 potx
... an explicit expression of the capacitor ratio (then named Ropt), which permits to design the value of the MIM capacitors of the varactors: (5) (6) The optimal value of the MIM capacitor is finally ... and Systems or for the final HPA to characterize the thermal coupling between the transistors Fig 17 shows the thermal resistance of a unit transistor cell of 1mm, and the results for an HPA with ... order of the filter As a result, the formula of 1 needs to be modified With the assistance of statistical inferences, the orders, 1 and Rf of the proposed dual-passband filter should be in the...
Ngày tải lên: 21/06/2014, 10:20