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Tang, Ning,Araki, Yuki,Tamura, Kenji,Dong, Lijun,Zhang, Xuemei,Liu, Qiuhua,Ji, Ruonan,Kameda, Takayuki,Toriba, Akira,Hayakawa, Kazuichi Korean Society for Atmospheric Environment 2009 Asian Journal of Atmospheric Environment (AJAE) Vol.3 No.1
Airborne particulates were collected in three different size fractions (>7 ${\mu}m$; 2.1-7 ${\mu}m$; < 2.1 ${\mu}m$) by using Andersen low-volume air samplers at three sites in Tieling city, Liaoning Province, a typical local city in northeast China, in every season during the period from July 2003 to May 2004. Nine polycyclic aromatic hydrocarbons (PAHs) and seven nitropolycyclic aromatic hydrocarbons (NPAHs) in the airborne particulates were determined by HPLC with fluorescence and chemiluminescence detection, respectively. The mean total concentrations of the nine PAHs and seven NPAHs were highest at The mixed residential and light industrial site, and lowest at the residential site near the suburbs. At all sites, more than 70% of the total PAHs and more than 60% of the total NPAHs were found in the finest particulate (< 2.1 ${\mu}m$) fraction. Both cluster analysis and several diagnostic ratios showed that the major contributors of PAHs and NPAHs in airborne particulates were coal combustion systems such as domestic stoves and coal boilers in all seasons in Tieling city.
Fukuzumi, Shunichi,Saito, Kenji,Ohkubo, Kei,Khoury, Tony,Kashiwagi, Yukiyasu,Absalom, Mark A.,Gadde, Suresh,D'Souza, Francis,Araki, Yasuyuki,Ito, Osamu,Crossley, Maxwell J. Royal Society of Chemistry 2011 Chemical communications Vol.47 No.28
<P>Multiple photosynthetic reaction centres have successfully been constructed using supramolecular complexes of zinc porphyrin dendrimers [D(ZnP)<SUB><I>n</I></SUB>: <I>n</I> = 4, 8, 16] with fulleropyrrolidine bearing a pyridine ligand (C<SUB>60</SUB>py). Efficient energy migration occurs completely between the ZnP units of dendrimers prior to the electron transfer with increasing the generation of dendrimers to attain an extremely long charge–separation lifetime.</P> <P>Graphic Abstract</P><P>Efficient energy migration occurs more efficiently between the ZnP units of dendrimers prior to the electron transfer with increasing the generation of dendrimers to attain an extremely long charge–separation lifetime. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1cc11725d'> </P>
Jingook Kim,Takita, Yuzo,Araki, Kenji,Jun Fan IEEE 2013 IEEE transactions on components, packaging, and ma Vol.3 No.9
<P>The concept of target impedance can be significantly improved, based on the rigorous closed-form expressions for transient supply voltage ripple excited by an integrated circuit (IC) switching current, for the power distribution network (PDN) with power traces that is commonly used in handheld devices. A systematic procedure for developing the target impedance is formulated, which is then applied to the PDN design of a handheld product. From measurements of transient IC switching currents, PDN impedance, and supply voltage ripple, it is shown that the proposed target impedance successfully correlates the PDN impedance in the frequency domain with the transient supply voltage ripple in the time domain.</P>