scholarly journals A New Method for Simulating Power Flow Density Focused by a Silicon Lens Antenna Irradiated with Linearly Polarized THz Wave

2015 ◽  
Vol 19 (2) ◽  
pp. 59
Author(s):  
Catur Apriono ◽  
EkoTjipto Rahardjo ◽  
Norihisa Hiromoto
Author(s):  
В.В. Кондратенко ◽  
Н.И. Федянина ◽  
О.В. Карастоянова

Исследовано влияние обработки свежих плодовых тел шампиньонов (Agaricus bisporus) ультрафиолетовым излучением в коротковолновом диапазоне С (100–280 нм) дозами 160, 320, 480, 640, 800 Дж/м2 при плотности потока мощности 2,7 · 103Дж/с · м2 на изменение качественного показателя хранимоспособности – текстуры грибов в процессе холодильного хранения. Хранение упаковок с грибами осуществляли в холодильной камере при t 4–5°С и относительной влажности воздуха 85–90%. Контроль изменения показателя хранимоспособности проводили по истечении 1, 3, 8, 13, 16, 21, 24 и 27-ми сут. В процессе хранения исследовали динамику изменения текстуры грибов, кг/см2. Установлено, что обработка в диапазоне доз до 418 Дж/м2 приводит к негативному эффекту изменения хранимоспособности и является нецелесообразной. Определено, что обработка УФ излучением в диапазоне доз 418–800 Дж/м2 приводит к увеличению хранимоспособности и достигает своего экстремума при 685 Дж/м2. При экстраполяции результатов экспериментальных данных такая тенденция отмечается, предположительно, до дозы 876 Дж/м2. Получены динамики текстуры в процессе хранения после обработки УФ излучением. Разработано математическое описание зависимости предельной хранимоспособности по показателю текстуры грибов от дозы облучения. The effect of irradiation of fresh the fruiting bodies of champignons (Agaricus bisporus) with ultraviolet radiation in the short – wave range C (100–280 nm) doses of 160, 320, 480, 640, 800 J/m2at a power flow density of 2,7 · 103 J/s · m2 on the change in the quality indicator of ability to store – the texture of mushrooms during cold storage was studied. Packages with mushrooms were stored in a refrigerator at t 4–5°C and relative humidity 85–90%. Monitoring of changes of ability to store was carried after 1, 3, 8, 13, 16, 21, 24 and 27 days. During storage, studied the dynamics of changes in the texture of mushrooms, kg/cm2. It was found that irradiation in the dose range up to 418 J/m2 leads to a negative effect of changes of ability to store and is impractical. It was determined that ultraviolet radiation in the dose range of 418– 800 J/m2leads to an increase of ability to store and reaches extreme at 685 J/m2. When extrapolating the results of experimental data, such a tendency is presumably observed up to a dose of 876 J/m2. The dynamics of the texture obtained during storage after processing with ultraviolet radiation. A mathematical description of the dependence of the maximum storage capacity in terms of the texture of mushrooms on the radiation dose is developed.


Author(s):  
Shuai Yuan ◽  
Jun Li ◽  
Zhixiong Yang ◽  
Aikun Ma ◽  
Yuting Wang ◽  
...  

2020 ◽  
Vol 176 ◽  
pp. 03011
Author(s):  
Roman S. Singatulin ◽  
Alexandr V. Sapryka

The article presents experimental studies of the application of electromagnetic technologies for impact on biological objects. Tomato seeds were chosen as experimental biological objects. For the study, the technological parameters of EMF were obtained using the method of full factor experiment. Laboratory and field studies were carried out. In laboratory studies, the results of EMF effects on chromosomal aberrations of tomato seeds were obtained. Dependencies of chromosomal aberrations in tomato seeds on changes in seeds EMF exposure, EMF frequency, and EMF power flow density were given. In field studies, pre-sowing treatment of tomato seeds with electromagnetic radiation was performed in order to cause changes in biochemical processes in the plant. During the experiment, 55 options of pre-sowing EMF treatment with specified parameters were obtained. Dependencies of tomato seed germination on input parameters - EMF frequency, power flow density and exposure were given. After laboratory and field tests, it was concluded that pre-sowing EMF treatment of tomato seeds with optimal parameters results in an increase in chromosomal aberrations of tomatoes by 5.5%; field germination of tomatoes by 18%.


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