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Some of fresh produces emit ethylene gas, one of plant hormones, which promotes the aging for themselves and accelerates senescence of other agricultural produce. In transportation of some kinds of agricultural produce, reducing ethylene gas in the transportation container is important for keeping freshness of fruits and vegetables. In this study, ethylene gas was decomposed using a dielectric barrier discharge (DBD) plasma reactor. The ethylene gas was diluted with the gas mixture of nitrogen, oxygen and carbon dioxide as simulated gas in the transportation container. The DBD plasma was generated by a pulse switching power supply consisted of MOS-FET switching devices, capacitors and pulse transformers. The mixture gas was contained harmful by-products, ozone and carbon monoxide after DBD plasma treatment. An Ag nanoparticle-loaded zeolite was set in the catalytic reactor to remove the by-products. The catalytic reactions reduced the by-products produced by the plasma treatment. It was confirmed that carbon monoxide diluted with simulated dry air was oxidized to carbon dioxide by the catalyst and DBD plasma.

Ethylene gas was decomposed using packed-bed type dielectric barrier discharge (PBDBD) plasma reactor to keep freshness of fruits. The ethylene gas was diluted with gas mixture of nitrogen, oxygen, and carbon dioxide as simulated gas in the transportation container. The PBDBD plasma was generated by a pulse switching power supply, which consisted of MOS-FET switching devices, capacitors, and pulse transformers. The Ag nanoparticle-loaded zeolite as catalyst has high activity and good performance for reduction of ozone and oxidizing carbon monoxide at room temperature. The Ag nanoparticle-loaded zeolite pellets enhanced ethylene removal efficiency and reduced ozone and carbon monoxide produced by the plasma treatment. It was confirmed that the carbon monoxide in the gas simulated dry air composition was oxidized using Ag nanoparticle-loaded zeolite with plasma treatment. C⃝ 2017 Wiley Periodicals, Inc. Electron Comm Jpn, 100(2): 3-11, 2017; Published online in Wiley Online Library (wileyonlinelibrary.com).

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A 67-year-old womanwith pneumoniaand diabetes mellitus was admitted with the complaints of abdominal and back pain. Sputum culture was positive for Klebsiella pneumoniae. Computed tomographic scanning (CT) of the abdomen and spinal radiograph of the lumber column revealed a paraventebral spaceoccupying lesion, abdominal aortic aneurysm and destructive change of L3 and L4. Pseudoaneurysm of the abdominal aorta associated with infectious spondylitis with paravertebral abscess was suspected and confirmed by aortography. Klebsiella pneumoniae was cultured from the abscess. The patient's condition improved rapidly after drainage of the abscess and administration of LMOX and gentamicin. Infectious pseudoaneurysm of the abdominal aorta associated with infectious spondylitis has rarely been reported. These two in combination due to Klebsiella pneumoniae has not been reported to our knowledge. The pathologic changes were found easily by CTscan. Wheninfectious aneurysm or infectious spondylitis is diagnosed alone, possible combination of these diseases should be kept in mind.Key words: Infectious Aortic Pseudoaneurysm due to Klebsiella pneumoniae, Infectious spondylitis due to Klebsiella pneumoniae.A case of infectious pseudoaneurysm of the abdominal aorta associated with infectious spondylitis due to Klebsiella pneumoniae is presented. These conditions were easily diagnosed by sputum culture, abscess culture, spinal radiograph, abdominal CT scan and aortography. The patient was eventually treated surgically and her condition has been good. CASE REPORTA 67-year-old woman was admitted to this hospital on March ll, 1987, because of fever, yellowish productive cough, pain in the abdomen, back and lumbar region and uncontrolled diabetes mellitus.Fever and productive cough started about two weeks prior to admission. She was put on antibiotics by a local physician. Pain in the abdomen, back and lumbar region started about a week previously and had worsened progressively.Physical examination revealed a temperature of 37.8°C. Moist rales were heard over the right lung field. Abdomenrevealed diffuse tenderness without rebound tenderness. There was no palpable pulsatile mass in the abdomen. There was mild percussion tenderness over the lumbar spine.Laboratory results included a white blood cell count of 9,000 with a differentiation of 60%stab and 30%segments. Erythrocyte sedimentation rate was 90 mmin one hour and 120 mmin two hours.Fasting blood sugar was 477 mg/dl. A chest