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Prodi, A.,Purahong, W.,Tonti, S.,Salomoni, D.,Nipoti, P.,Covarelli, L.,Pisi, A. The Korean Society of Plant Pathology 2011 Plant Pathology Journal Vol.27 No.4
Chemotype composition of Fusarium graminearum strains, isolated from durum wheat kernels from naturally FHB infected fields in Northern and Central Italy, was investigated by multiplex PCR. The different climatic and environmental conditions of the two examined areas separated by the Apennines affected the composition of chemotypes. 15Ac-DON chemotype was predominant in both the sub areas. Nivalneol chemotype was more frequent in the warmer sub area.
A. Prodi,W. Purahong,S. Tonti,D. Salomoni,P. Nipoti,L. Covarelli,A. Pisi 한국식물병리학회 2011 Plant Pathology Journal Vol.27 No.4
Chemotype composition of Fusarium graminearum strains, isolated from durum wheat kernels from naturally FHB infected fields in Northern and Central Italy, was investigated by multiplex PCR. The different climatic and environmental conditions of the two examined areas separated by the Apennines affected the composition of chemotypes. 15Ac-DON chemotype was predominant in both the sub areas. Nivalneol chemotype was more frequent in the warmer sub area.
HYBRID SERIAL-OUTPUT CONVERTER TOPOLOGY FOR VOLUME AND WEIGHT RESTRICTED LED LIGHTING APPLICATIONS
T. McRae,A. Prodi? 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper introduces a new high power density step-up LED driver converter architecture based on power processing divided between a switched capacitor (SC) converter and a flyback stage. The step up function is obtained by stacking the output of the flyback on top of the SC converter output. The high power density SC processes the majority of the power of the system and is left unregulated to maximize its efficiency. The small flyback processes only a small portion of the total power and regulates the output voltage. As a result high power efficiency, small converter volume, and tight output voltage regulation are achieved. A digital controller regulates the operation of this hybrid converter topology. In comparison with conventional boost and flyback based solutions, the new architecture drastically reduces the passive component volume and decreases peak voltage stress of switches. The paper also gives design guidelines for this topology and topologies of its kind for a given power processing efficiency target. Experimental results obtained with a 12 V to 55 V, 47W, 500 kHz prototype show that the hybrid converter has about four times smaller energy storage requirements compared to conventional solutions, while maintaining approximately the same power processing efficiency of 90%.
Photothermal sensitisation and therapeutic properties of a novel far-red absorbing cyanine
Camerin, Monica,Jori, Giulio,Ciana, Leopoldo Della,Fabbroni, Serena,Bonacchi, Sara,Montalti, Marco,Prodi, Luca Korean Society of Photoscience 2009 Photochemical & photobiological sciences Vol.8 No.10
A water-soluble disulfonate cyanine was prepared by chemical synthesis and shown to possess photophysical properties which are particularly favourable for the promotion of photothermally sensitised processes, including a very low (<0.1) quantum yield of fluorescence emission and ultra-short (110 to 400 ps) excited state lifetimes, as well as the presence of intense absorption bands at wavelengths longer than 800 nm. This allows the possibility of high-energy irradiation by means of a Ti:sapphire laser operated in a pulse regime. The cyanine was accumulated in comparable amounts by B78H1 amelanotic melanoma cells and HT1080 transformed fibroblasts, however only the B78H1 cells could be extensively damaged by photothermal sensitisation with the cyanine, which was endocellularly distributed as suggested by observations at the optical microscope; the efficiency of the photoprocess could be enhanced by formation of aggregated intracellular cyanine clusters. On the other hand, only a modest photoinactivation of HT1080 cells was induced by photothermal sensitisation, possibly owing to the localization of the cyanine at the periphery of such cells. The cyanine also exhibited a good selectivity of amelanotic melanoma targeting in C57BL/6 mice, bearing the tumour subcutaneously transplanted in the dorsal area: the ratio of cyanine concentration in the melanoma and the surrounding cutaneous districts was as large as 3.8 at 1 h post-injection. The cyanine underwent a fast clearance from the organism, since only traces of the photosensitiser were observed in all the studied tissues at 3 h after i.v. administration. Thus, irradiations were performed at post-injection times shorter than 1 h. Maximum photothermal sensitisation efficiency was obtained at 10 min after injection with a 50% cure rate. Thus, photothermal therapy (PTT) appears to be a very promising and efficient modality of tumour treatment.