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| 1 | Construction and Characterization of an Atmospheric Simulation Smog Chamber显示文摘当前,在北京的空气污染与来源污染物质的二种类型成为了一个复杂问题:煤烟和光化学烟雾。而且, O3 的最大的时时吝啬的集中连续地增加,特别在夏天。为了模仿光化反应,开发一个空气质量模拟模型并且推进,改进北京的空气质量,一精确控制温度,室内,烟雾房间设备在清华被设计并且构造大学。不,描述实验被执行了获得烟雾房间的基本参数,例如 NO_2 的墙损失率 O_3 , C_3H_6 和微粒物质(下午),紧张紫外(紫外)在房间的光,净化的空气的反应和试验性的结果的重制度。结果显示设备表现直到说明,并且能遇见为模仿光化反应要求的要求。臭氧和第二等的器官的喷雾器(SOA ) 的形成上的高主要的污染下午的效果在调查下面。 | 武山 吕子峰 郝吉明 赵喆 李俊华 Hideto TAKEKAWA Hiroaki MINOURA Akio YASUDA | 2007 | Advances in Atmospheric Sciences2007，24，2： | 12 |
| 2 | Hygroscopicity of particles generated from photooxidation of α-pinene under diferent oxidation conditions in the presence of sulfate seed aerosols显示文摘Smog chamber experiments were conducted to investigate the hygroscopicity of particles generated from photooxidation of α-pinene/NOx with diferent sulfate seed aerosols or oxidation conditions. Hygroscopicity of particles was measured by a tandem diferential mobility analyzer(TDMA) in terms of hygroscopic growth factor(Gf), with a relative humidity of 85%. With sulfate seed aerosols present, Gf of the aerosols decreased very fast before notable secondary organic aerosols(SOA) formation was observed, indicating a heterogeneous process between inorganic seeds and organic products might take place as soon as oxidation begins, rather than only happening after gas-aerosol partition of organic products starts. The final SOA-coated sulfate particles had similar or lower Gf than seed-free SOA. The hygroscopicity of the final particles was not dependent on the thickness but on the hygroscopicity properties of the SOA, which were influenced by the initial sulfate seed particles. In the two designed aging processes, Gf of the particles increased more significantly with introduction of OH radical than with ozone. However, the hygroscopicity of SOA was very low even after a long time of aging, implying that either SOA aging in the chamber was very slow or the Gf of SOA did not change significantly in aging. Using an aerosol composition speciation monitor(ACSM) and matrix factorization(PMF) method, two factors for the components of SOA were identified, but the correlation between SOA hygroscopicity and the proportion of the more highly oxidized factor could be either positive or negative depending on the speciation of seed aerosols present. | Biwu Chu Kun Wang Hideto Takekawa Junhua Li Wei Zhou Jingkun Jiang Qinxing Ma Hong He Jiming Hao | 2014 | Journal of Environmental Sciences2014，26，1： | 6 |
| 3 | Tracking domestic ducks:A novel approach for documenting poultry market chains in the context of avian influenza transmission显示文摘Agro-ecological conditions associated with the spread and persistence of highly pathogenic avian influenza(HPAI) are not well understood, but the trade of live poultry is suspected to be a major pathway. Although market chains of live bird trade have been studied through indirect means including interviews and questionnaires, direct methods have not been used to identify movements of individual poultry. To bridge the knowledge gap on quantitative movement and transportation of poultry, we introduced a novel approach for applying telemetry to document domestic duck movements from source farms at Poyang Lake, China. We deployed recently developed transmitters that record Global Positioning System(GPS) locations and send them through the Groupe Spécial Mobile(GSM) cellular telephone system. For the first time, we were able to track individually marked ducks from 3 to 396 km from their origin to other farms, distribution facilities, or live bird markets. Our proof of concept test showed that the use of GPS-GSM transmitters may provide direct, quantitative information to document the movement of poultry and reveal their market chains. Our findings provide an initial indication of the complexity of source-market network connectivity and highlight the great potential for futuretelemetry studies in poultry network analyses. | Chang-Yong Choi John Y Takekawa XIONG Yue LIU Ying Martin Wikelski George Heine Diann J Prosser Scott H Newman John Edwards Fusheng Guo Xiangming Xiao | 2016 | Journal of Integrative Agriculture2016，15，7： | 3 |
| 4 | Decreased Production of Interleukin-12 and Type 2 Immune Responses Are Marked in Cachectic Patients with Colorectal and Gastric Cancer显示文摘 | Masahiko Shibata Takeshi Nezu Hisao Kanou Hideo Abe Motoo Takekawa Masahiro Fukuzawa | 2002 | Journal of Clinical Gastroenterology2002，，4： | 2 |
| 5 | Acoustic Imaging Frequency Dynamics of Ferroelectric Domains by Atomic Force Microscopy显示文摘我们基于铁电体领域能第一在更低的频率被设想在下面,这被发现的商业原子力量显微镜学由低频率的声学的探查显微镜学报导铁电体域的声学的成像频率动力学到由 基于AFM 的声学的显微镜学的 0.5 kHz 声学的信号揭示了的频率依赖者在频率范围的强壮的声学的回答从 7kHz 到在 8.1kHz 的 10kHz ,和到达最大值。声学的对比机制能被归功于到对本地有弹性的压力领域的铁电体微观结构的不同有弹性的反应,它被当压电的变换器正在颤动时,在样品播送的声学的波浪和令人激动的声学的波浪由于正常压电的效果在交流电场下面导致。[从作者抽象] | 赵坤宇 曾华荣 宋红章 惠森兴 李国荣 殷庆瑞 Kiyoshi Shimamurat Chinna Venkadasamy Kannan Encarnacion Antonia Garcia Villora Shunji Takekawa Kenji Kitamura | 2008 | Chinese Physics Letters2008，25，9： | 2 |
| 6 | Effects of two transition metal sulfate salts on secondary organic aerosol formation in toluene/NOx photooxidation显示文摘Aerosol phase reactions play a very important role on secondary organic aerosol (SOA) formation, and metal-containing aerosols are important components in the atmosphere. In this study, we tested the effects of two transition metal sulfate salts, manganese sulfate (MnSO4) and zinc sulfate (ZnSO4), on the photochemical reactions of a toluene/NOx photooxidation system in a 2 m3 smog chamber. By comparing photochemical reaction products of experiments with and without transition metal sulfate seed aerosols, we evaluated the effects of transition metal sulfate seed aerosols on toluene consumption, NOx conversion and the formation of ozone and SOA. MnSO4 and ZnSO4 seed aerosols were found to have similar effects on photochemical reactions, both enhance the SOA production, while showing negligible effects on the gas phase compounds. These observations are consistent when varying metal sulfate aerosol concentrations. This is attributed to the catalytic effects of MnSO4 and ZnSO4 seed aerosols which may enhance the formation of condensable semivolatile compounds. Their subsequent partitioning into the aerosol phase leads to the observed SOA formation enhancement. | Biwu CHU Jiming HAO Junhua LI Hideto TAKEKAWA Kun WANG Jingkun JIANG | 2013 | Frontiers of Environmental Science & Engineering2013，7，1： | 2 |
| 7 | Brain perfusion and upper limb motor function:A pilot study on the correlation between evolution of asymmetry in cerebral blood flow and improvement in FuglMeyer Assessment score after rTMS in chronic post-stroke patients显示文摘 | Takekawa T Kakuda W Uchiyama M | 2014 | J Neuroradiol2014，41，3： | 1 |
| 8 | Observation of number concentrations of atmospheric aerosols and analysis of nanoparticle behavior at an urban background area in Japan 显示文摘 | Hiroaki Minoura Hideto Takekawa | 2005 | Atmospheric Environment2005，39，： | 1 |
| 9 | A Comparative Study on the Domain Switching Characteristics of Near Stoichiometric Lithium Niobate and Lithium Tantalate Single Crystals 显示文摘 | Ganesamoorthy S Nakamura M Takekawa S | 2005 | Materials Science and Engineering B2005，120，： | 1 |
| 10 | Stoichiometric Mg:LiNbO3 as an Effective Material for Nonlinear Optics显示文摘 | Furukawa Y Kitamura K Takekawa S | 1998 | Optics Letters1998，23，24： | 1 |
| 11 | A Comparative Study on the Domain Switching Characteristics of Near Stoichiometric Lithium Niobate and Lithium Tantalate Single Crystals 显示文摘 | Ganesamoorthy S Nakamura M Takekawa S | 2005 | Materials Science and Engineering B2005，120，： | 1 |
| 12 | Peroxisome proliferator-activated receptor (PPAR)- α activation increases adiponectin receptors and reduces obesity-related inflammation in adipose tissue显示文摘 | Tsuchida A Yamauchi T Takekawa S | 2005 | Diabetes2005，54，12： | 1 |
| 13 | Signal transduction by MAP kinase cascades in budding yeast显示文摘 | Posas F Takekawa M Saito H | 1998 | Curr Opin Microbiol1998，1，2： | 1 |
| 14 | Effects of intravenous lidocaine prior to intubation on postoperative airway symptoms 显示文摘 | Takekawa K Yoshimi S Kinoshita Y | 2006 | J Anesth2006，20，1： | 1 |
| 15 | Contribution of many charged residues at the stator-rotor interface of the Na + -driven flagellar motor to torque generation in Vibrio alginolyticus 显示文摘 | Takekawa N Kojima S Homma M | 2014 | J Baeteriol2014，196，7： | 1 |
| 16 | Signal transduction by MAP kinase cascades in budding yeast 显示文摘 | Posas F Takekawa M Saito H | 1998 | Curr Opin Microbiol1998，1，2： | 1 |
| 17 | Activation of MTK1/MEKK4 by GADD45 through induced N-C dissociation and dimerizatian-mediated trans antophosphorylation of the MTK1kinase domain显示文摘 | Miyake Z Takekawa M Ge Q | 2007 | Moi Cell Biol2007，27，7： | 1 |
| 18 | Growth of 4-in diameter MgO-doped near-stoichiometric lithium tantalate single crystal and fabrication of periodically poled structures 显示文摘 | Kumaragurubaran S Takekawa S Nakamura M | 2006 | Journal of Crystal Growth2006，292，： | 1 |
| 19 | p53-inducible Wip1 phosphatase mediates a negative feedback regulation of p38 MAPK-p53 signaling in response to UV radiation显示文摘 | Takekawa M Adachi M Nakahata A | 2000 | EMBO J2000，19，： | 1 |
| 20 | Peroxisome proliferator-activated receptor (PPAR) a activation increases adiponectin receptors and reduces obesity-related inflammation in adipose tissue: comparison of activation of PPARc, PPAR% and their combination显示文摘 | Tsuchida A Yamauchi T Takekawa S | 2005 | Diabetes2005，54，12： | 1 |
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