Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Katsuyuki Izumi"'
Publikováno v:
Sensors and Actuators B: Chemical. 268:1-6
To improve the performance of our previously-reported KI/α-CD ozone sensing chip, the present work carried out a series of experiments based on exposing these chips to ozone under static conditions. This device was confirmed to operate on a passive
Publikováno v:
Sensors and Actuators B: Chemical. 241:116-122
A chemical sensing chip for gaseous ozone (O 3 ) has been fabricated by impregnating a porous glass sheet (8 mm square and 1 mm thick) with potassium iodide (KI) and α-cyclodextrin. The latter suppresses volatilization of iodine formed by the reacti
Publikováno v:
Sensors and Actuators B: Chemical. 216:128-133
A new type of chemical sensor for gaseous nitrogen oxides (NOx, the sum of NO and NO 2 ) has been fabricated by combining a porous glass-based NO 2 sensing chip with an oxidizing agent. In this device, NO is first oxidized to NO 2 over the oxidizer o
Publikováno v:
Indoor Air. 20:486-493
UNLABELLED We undertook this to determine the formaldehyde concentration in Japanese houses and the relationship between formaldehyde levels and the age and temperature of a house using a sensor element that we developed for time-integrated measureme
Publikováno v:
Sensors and Actuators B: Chemical. 129:544-550
We developed a sensor element for detecting formaldehyde. The sensor element was made of a porous glass impregnated with both a Schiff's reagent and an acid. The sensor element changed its color from yellow to violet after exposure to formaldehyde, a
Autor:
Satoru Tokumitsu, Yamada Takumi, Yasuko Maruo, Katsuyuki Izumi, Jiro Nakamura, Masahiro Uchiyama
Publikováno v:
Journal of Environmental Chemistry. 18:501-509
We have developed a sensor element for detecting formaldehyde using a reaction between β-diketone and formaldehyde. We estimated the formation and decomposition reaction rate constants of pyridine derivatives (yellow dye) on the sensor element, and
Autor:
Susumu Nozoe, Masahiro Utiyama, Xuan Chen, Shangxun Zhang, Shiro Hatakeyama, Jinghua Zhang, Katsutoshi Horie, Masatoshi Aoki, kotaro Murotsu, Takuo Nagasima, Tsutomu Fukuyama, Hiroshi Hara, Katsuyuki Izumi
Publikováno v:
Journal of Agricultural Meteorology. 60:1057-1060
Autor:
Shangxun ZHANG, Xuan CHEN, Hiroshi HARA, Katsutoshi HORIE, Masatoshi AOKI, Kazuhide MATSUDA, Katsuyuki IZUMI, Tsutomu FUKUYAMA, Masahiro UTIYAMA, Shiro HATAKEYAMA
Publikováno v:
Journal of Agricultural Meteorology. 60:1053-1056
Publikováno v:
Chemical Engineering Communications. 191:1259-1270
Studies were carried out on coating glass beads with fine hematite particles by use of the theta composer, a newly developed high-shearing-type mixer. Topics of study included the effects of rotational speed of the rotor, N r , (i.e., tangential velo
Autor:
Haruko Suzuki, Kenichi Takano, Toshihiro Ichino, Katsuyuki Izumi, Masahiro Utiyama, Yasuko Maruo, Hiroshi Hara, Masatoshi Aoki, Tsutomu Fukuyama
Publikováno v:
Water, Air, & Soil Pollution. 151:53-70
Concentrations of ozone and nitrogen oxides, together with air temperature and solar radiation intensity, were measured at several heights on a tower standing through the canopy of a red pine forest in summer and in autumn. In the summer observation,