Suchergebnisse

- Nationale Identität + - Industrialisierung,Urbanisierung und Indigenisierung + - Rolle der Kirche + - Widerstand gegen Russifizierung + - Sozio-ökonomische Entwicklung Georgiens + Selektiv aus dem Inhalt

This book presents the memoirs of the late well-known and highly respected US diplomat J. Graham Parsons, who served in pre-war Japan, China, and Cuba, Canada and Washington, DC, during World War II, and postwar India, Japan, Laos, and Sweden among other assignments. As the memoir makes clear, Ambassador Parsons interacted with some of the most famous figures in 20th century politics and diplomacy. Scholars have accused him of being a hawk, but the reader will discover he was more nuanced than that. He was loyal to his employer, and thus reflected the policies, but not necessarily the politics, of a particular administration. Indeed, he was a traditional diplomat of the old school, and expressed concerns in the concluding chapter about how diplomacy--specifically, the State Department--was evolving and the over-politicization of American foreign policy prior to his passing in 1991, just shy of his 84th year.

1 Introduction to mobile communications -- 1.1 Background -- 1.2 Mobile radio system fundamentals -- 1.3 A simple mobile radio system -- 1.4 Practical communication systems -- 1.5 Paging -- 1.6 Portables -- 1.7 Dialling systems -- 1.8 Radiophone services -- 1.9 Channel sharing -- 1.10 Area coverage techniques -- 1.11 Present and future use of mobile radio -- References -- 2 Multipath characteristics in urban areas -- 2.1 Introduction -- 2.2 The nature of multipath propagation -- 2.3 Short-term fading -- 2.4 Frequency-selective fading -- 2.5 Channel characterization -- 2.6 Channel sounding techniques -- 2.7 Practical channel sounders -- 2.8 Small-area characterization -- 2.9 Large-area characterization -- 2.10 Conclusions -- References -- 3 Propagation and signal strength prediction -- 3.1 Introduction -- 3.2 Fundamentals of VHF and UHF propagation -- 3.3 Propagation over terrain obstacles -- 3.4 Multiple knife-edge diffraction -- 3.5 Propagation prediction models -- 3.6 Signal strength prediction in urban areas -- 3.7 Discussion -- 3.8 Signal variability -- 3.9 Large area statistics -- 3.10 Building penetration losses -- References -- 4 Modulation techniques -- 4.1 Introduction -- 4.2 Amplitude modulation -- 4.3 Angle modulation -- 4.4 Implementation of AM systems -- 4.5 Single-sideband implementation -- 4.6 Demodulation -- 4.7 Generation of FM signals -- 4.8 FM demodulators -- 4.9 The effect of noise on AM systems -- 4.10 The effect of noise on FM systems -- 4.11 The effects of multipath propagation -- 4.12 Demodulation of data signals -- 4.13 Differentially encoded PSK (DPSK) -- 4.14 The effect of noise in data communication systems -- 4.15 Carrier transmissions -- 4.16 The influence of multipath fading on data transmissions -- 4.17 System performance -- 4.18 The fully digital approach -- References -- 5 Man-made noise -- 5.1 Introduction -- 5.2 Characterization of pulses -- 5.3 Characterization of impulsive noise -- 5.4 Measuring equipment -- 5.5 Practical measuring systems -- 5.6 Measurement of noise amplitude distribution -- 5.7 Statistical characterization of noise -- 5.8 Impulsive noise measurements -- 5.9 Summary -- 5.10 Performance prediction techniques -- References -- 6 Diversity reception -- 6.1 Introduction -- 6.2 Basic diversity methods -- 6.3 Improvements obtainable from diversity -- 6.4 Switched diversity -- 6.5 The effect of diversity on data systems -- 6.6 Practical diversity systems -- 6.7 Predetection diversity -- 6.8 Diversity systems using special receivers -- 6.9 Switched diversity -- 6.10 Comparison -- 6.11 Postdetection diversity -- 6.12 Time diversity -- 6.13 Discussion and conclusions -- References -- 7 Using the radio channel in cellular radio networkgs -- 7.1 The radio channel as a system component -- 7.2 Wideband versus narrowband -- 7.3 Cellular radio fundamentals -- 8 Analogue cellular radio systems -- 8.1 Channel structures -- 8.2 Specifications for the radio equipment -- 8.3 Network control activity -- 8.4 System operation -- 8.5 Some system comparisons -- 9 Digital cellular radio systems -- 9.1 Digital versus analogue for second-generation cellular systems -- 9.2 Choice of basic system architecture -- 9.3 Essential techniques for digital implementation -- 9.4 Example systems -- 9.5 Postscript.

7 páginas.-- 4 figuras.-- 1 tablas.-- 32 referencias.-- Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.envpol.2015.07.013. ; We investigated the effects of different bioavailability scenarios on the rhamnolipid-enhanced biodegradation of pyrene by the representative polycyclic aromatic hydrocarbon degrader Mycobacterium gilvum VM552. This biosurfactant enhanced biodegradation when pyrene was provided in the form of solid crystals; no effect was observed when the same amount of the chemical was preloaded on polydimethylsiloxane (PDMS). An enhanced effect was observed when pyrene was sorbed into soil but not with the dissolved compound. Synchronous fluorescence spectrophotometry and liquid scintillation were used to determine the phase exchange of pyrene. We also investigated the phase distribution of bacteria. Our results suggest that the rhamnolipid can enhance the biodegradation of pyrene by micellar solubilization and increase diffusive uptake. These mechanisms increase substrate acquisition by bacterial cells at exposure concentrations well above the half-saturation constant for active uptake. The moderate solubilization of pyrene from PDMS by the rhamnolipid and the prevention of cell attachment may explain the lack of enhancement for pyrene-preloaded PDMS. ; Support for this research was provided by the Spanish Ministry of Science and Innovation (CGL2010-22068-C02-01 and CGL2013-44554-R), the Andalusian Government (RNM 2337) and the FPI Programme (E.C.) ; Peer reviewed