1.1. PETRA III: PETRA III is a new high-brilliance synchrotron radiation source to be built at DESY, Hamburg [1]. Planned to start operation in 2009, the facility will have 14 beam lines spread along one eighth of its circumference. 40 to 960 bunches with a current of 100 mA and an emittance of 1 nm·rad will be circulated at 6 GeV. The topping up operation will ensure a stable beam. 235 beam po...

conclusions switching ams off may increase biventricular pacing in some patients. case presentation in this case series, we present a combination of far field sensing and automatic mode switching (ams) in six patients. it is found that this combination causes ventricular sensing (vs) episodes with wide qrs and no synchronization. we turn off the ams and alleviate the problem. introduction cardi...

microwave energy has potential for the efficient heating of minerals. minerals or materials, which couple to microwave energy are called dielectrics and many valuable minerals are found to be dielectric. the mineral ilmenite is one which shows good dielectric heating characteristics. in this paper, the effect of microwave heat energy on the partial reduction of oxidized ilmenite oxidized in ...

background and objectives:rapid processing of histopathological specimens and decreased turnaround time is important to fulfill the needs of clinicians treating sick patients, so the present study was conducted to compare the time taken and quality of sections in processing of prostatic tissue by rapid microwave and conventional techniques using morphometry.methods: four to five mm thick paired...

 Background and Objectives:Rapid processing of histopathological specimens and decreased turnaround time is important to fulfill the needs of clinicians treating sick patients, so the present study was conducted to compare the time taken and quality of sections in processing of prostatic tissue by rapid microwave and conventional techniques using morphometry. Methods: Four to five mm thick p...

in this study, green pepper was dried by a laboratory scale microwave-convective dryer. the effects of microwave power on drying rate, effective moisture diffusivity, and energy consumption of green pepper were studied at four different microwave powers of 180, 360, 540, and 720w. the drying data were fitted to the four thin-layer drying models. the moisture reduction of the green pepper sample...

Acute leukemia which is the most common cancer in children is a heterogeneous group of clonal malignancies. The conversion of the leukemic cell lineage during the course of the disease or later is termed lineage switch. It has been rarely reported in the literature. In leukemia lineage switch, conversions from lymphoblastic leukemia to myeloid leukemia or vice versa are reported. Herein, we rep...

Use of the vanadium-compensated semi-insulating (VCSI) 4H-SiC photoconductive semiconductor switch (PCSS) for generation an ultra-wideband (UWB) microwave with MHz tunable re-frequency is demonstrated. To evaluate impact device architectures on performance, a 4H-SiC-based was manufactured and evaluated using laser cluster driver configurable optical pulse re-frequency. The 1.5 mm-thick PCSS fou...

The pHEMT heterostructures optimized in this work to improve the parameters of switching microwave transistors have a one-sided δ-doping at 6×1012 cm-2 and an AlAs/GaAs spacer. Such were used fabricate monolithic integrated circuits single-pole double throw switches with gate length width 0.5 μm 100 μm, respectively. resulting had following parameters: gm = 400 mS/mm, saturation current ID=380 ...