High-power-level microwave multimeter

1994 ◽  
Vol 37 (3) ◽  
pp. 347-351
Author(s):  
A. V. Myl'nikov
2005 ◽  
Vol 48 (6) ◽  
pp. 939-945 ◽  
Author(s):  
Amanda B. Pucciarelli ◽  
Fernando O. Benassi

The effect of microwave heating on Salmonella Enteritidis inoculated on fresh chicken was investigated using a microwave oven (800 w) to determine the destruction of Salmonella Enteritidis isolated from chicken carcasses, in relation to the time of heating at two power settings: high (power level 10) and medium (power level 6); The relationship between heating time and temperature was also been studied. The destruction was 6.4 log cycles at time 95 sec for the high power level, and 5 log cycles at time 140 sec for medium power setting. After 110 sec for higher power level, no survival of Salmonella Enteritidis was detected in samples (100g), but at 140 sec for medium power level, these food pathogens were still present.


1969 ◽  
Vol 47 (21) ◽  
pp. 2343-2350 ◽  
Author(s):  
Takeshi Oka

Several microwave double-resonance experiments using high pumping power have been carried out in ethylene oxide molecules. The characteristics of the double resonance, such as the splitting or the "pulling" of the signal, have been observed magnified by the use of high power. The M fine structure of the signal has been observed for the first time. By the use of collision-induced transitions, the formula of Karplus and Schwinger for saturation has been confirmed at the high-power level. Applications of the technique for additional studies of molecular problems are discussed.


2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Maya Sarah ◽  
Mohd Rozainee Taib ◽  
Abdul Adamu

The study on microwave irradiation and steam batch process to sterilize oil palm fruits is carried out to investigate their effectiveness on lipase inactivation. The inactivation parameters, palm oil quality, and stripping efficiency were evaluated. Evaluation on the inactivation parameters, such as decimal reduction time (D-value) and kinetic constant (k), were conducted to study the sterilization dependency on time and temperature. Microwave sterilization required only 14.085 to 16.949 minutes to inactivate lipase at temperature of 76.5°C (max), while steam batch sterilization required more than 90 minutes to obtained similar level of free fatty acid (FFA) at higher temperature (80 to 105°C). The quality of palm oil was indicated by the concentration of FFA in palm oil. Sterilization of either by microwave irradiation or steam batch sterilization reduced lipase’s activity significantly, which is indicated by FFA concentration of below 1%. Stripping efficiency from microwave sterilization at various power level after 16 minutes were 27% (medium power level), 58.5% (medium high power level), and 61% (high power level), respectively.


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