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Journal Articles

Role of advection in atmospheric ammonia; A Case study at a Japanese lake basin influenced by agricultural ammonia sources

Kubota, Tomohiro; Kuroda, Hisao*; Watanabe, Mirai*; Takahashi, Akiko*; Nakazato, Ryoji*; Tarui, Mika*; Matsumoto, Shunichi*; Nakagawa, Keita*; Numata, Yasuko*; Ouchi, Takao*; et al.

Atmospheric Environment, 243, p.117856_1 - 117856_9, 2020/12

The dry and wet depositions of atmospheric ammonia (NH$$_{3}$$) is one of the important pathways of nitrogen loads to aquatic ecosystems. Crop and livestock agriculture, one of the largest emitters of NH$$_{3}$$ in Asian countries, are known to cause high spatial and seasonal variation of NH$$_{3}$$ and influence the surrounding lake basin areas via its dry and wet deposition. However, the spatial characteristics of the NH$$_{3}$$ concentration in basin scale are not completely understood for regulation in NH$$_{3}$$ emission. Here we aim to clarify dominant factors of spatial and seasonal variations of the NH$$_{3}$$ concentration in a eutrophic lake basin surrounded by agricultural areas in Japan. Passive sampling over various land use categories in the basin was conducted at 36 sites in total from October 2018 to January 2020. Interestingly, the observed NH$$_{3}$$ concentration near the livestock houses were higher in winter than summer, which was inconsistent with knowledge of seasonal changes of current NH$$_{3}$$ emission inventory based on temperature-driven volatilization process. Comparing monthly NH$$_{3}$$ concentrations with various meteorological factors, we suggested the importance of seasonal advection of NH$$_{3}$$ from high emission sources to which has been rarely paid attention by the previous past studies. As for this, should be considered for lake ecosystem management since deposition of NH$$_{3}$$ is known to be closely related to the ecological processes such as phytoplankton blooming.

Journal Articles

Atomically dispersed Pt on the surface of Ni particles; Synthesis and catalytic function in hydrogen generation from aqueous ammonia-borane

Li, Z.*; He, T.*; Matsumura, Daiju; Miao, S.*; Wu, A.*; Liu, L.*; Wu, G.*; Chen, P.*

ACS Catalysis, 7(10), p.6762 - 6769, 2017/10

 Times Cited Count:70 Percentile:4.16(Chemistry, Physical)

Journal Articles

Bond-selective photodissociation of partially deuterated ammonia molecules; Photodissociations of vibrationally excited NHD$$_{2}$$ in the 5$$nu$$$$_{NH}$$ state and NH$$_{2}$$D in the 5$$nu$$$$_{ND}$$ state

Akagi, Hiroshi; Yokoyama, Keiichi; Yokoyama, Atsushi

Journal of Chemical Physics, 120(10), p.4696 - 4704, 2004/03

 Times Cited Count:19 Percentile:44(Chemistry, Physical)

no abstracts in English

JAEA Reports

Certification of reliability of nuclide migration data

Ueda, Shinzo*; *; *; *

JNC-TJ8400 2000-002, 316 Pages, 2000/02

JNC-TJ8400-2000-002.pdf:14.28MB

Japan Nuclear Cycle Development Institute (JNC) have been setting migration parameters and developing its database for the 2nd Progress Report of HLW Geological Disposal (H12 Report). In this study, experimentswere carried out to certify the reliability of parameters and scenario, and examination was carried out to survey procedures of quality management. The main contents are as follows. (1)Data acquisition for certification of migration parameters. The effect of NH$$_{3}$$ complex of Pd on distribution coefficients (Kd) of Pd on both bentonite and rocks, and the effect of sulfate and carbonate complexes of Am on Kds of Am on bentonite are investigated. Kds of Pd depended on NH$$_{4}^{+}$$ concentration in aqueous. The dependence varied with pH. Effects of sulfate and carbonate complexes on Kds of Am were not remarkable. Apparent diffusivities of Cs in bentonite saturated by saline water were measured. It was confirmed that the apparent diffusivities of Cs in saline water were similar to those in pure water. (2)Evaluation of colloidal effect on nuclide migration. An evaluation of validity of analytical model (Hwang's model) for nuclide migration under existence of colloids and investigation of characterization of colloids in groundwater were carried out. As the results, it was indicated that the Hwang's model was appropriate, and it was found that samplingtechnique influenced concentration and size distribution of colloids. (3)Influence of organic substances on solubility. Solubility of Th was measured under the condition with humic acid and carbonate. It increased roughly in proportion to the concentration of humic acid. And it was remarkably high under the condition with carbonate. It was confirmed that Th solubility data set in H12 report was conservative, even though humic acid existed in groundwater. (4)Use of Mechanistic Models for Safety Assessment. The integrated sorption/diffusion model has been used to calculate K$$_{d}$$, D$$_{a}$$ and D$$_{e}$$ values ...

Journal Articles

The Coal gasification system using nuclear heat for ammonia production

Inaba, Yoshitomo; Fumizawa, Motoo; Tonogochi, Makoto*; Takenaka, Yutaka*

Enerugi, Shigen, 19(6), p.558 - 563, 1998/11

no abstracts in English

Journal Articles

Reactions of sulfur dioxide with ammonia; Dependence on oxygen and nitric oxide

Hirota, Koichi; J.Maekelae*; Tokunaga, Okihiro

Industrial & Engineering Chemistry Research, 35(10), p.3362 - 3368, 1996/00

 Times Cited Count:13 Percentile:30.95(Engineering, Chemical)

no abstracts in English

Journal Articles

Si$$_{3}$$N$$_{4}$$ fiber with excellenet thermal resistance, tensile strength and electrical insulating resistance

*; Seguchi, Tadao; *

Kagaku To Kogyo, 49(9), p.1256 - 1258, 1996/00

no abstracts in English

Journal Articles

Silicon nitride fiber synthesis from polycarbosilane fiber by radiation curing and pyrolysis under ammonia

*; *; Kasai, Noboru; Seguchi, Tadao; *

High-Temperature Ceramic-Matrix Composites II (HT-CMC2), 0, p.281 - 286, 1995/00

no abstracts in English

Journal Articles

A Slanted etching method to analyze the trapped charge distribution in the insulators of MIS structures

*; *; *; *; Yoshikawa, Masahito

Proc. of 21st Int. Symp. for Testing and Failure Analysis (ISTFA 95), 0, p.269 - 274, 1995/00

no abstracts in English

Journal Articles

Formation and quenching of NH fragments in excited states by high energy electron irradiation of helium-ammonia gas mixture

Matsuda, Koji; *; *; *; Hatada, Motoyoshi

Applied Radiation and Isotopes, 41(8), p.757 - 761, 1990/08

no abstracts in English

JAEA Reports

Removal of SO$$_{x}$$ and NO$$_{x}$$ in coal-fired flue gas by the addition of ozone and ammonia

Namba, Hideki; Suzuki, Nobutake; Tokunaga, Okihiro

JAERI-M 89-177, 18 Pages, 1989/11

JAERI-M-89-177.pdf:0.61MB

no abstracts in English

Journal Articles

Effect of thorium concentration on ThO$$_{2}$$ sol preparation under pH control by gaseous ammonia addition method

;

Journal of Nuclear Science and Technology, 24(9), p.748 - 758, 1987/09

 Times Cited Count:8 Percentile:35.47(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Effect of Operation Conditions on Ammonia Evolution in Isothermal Composting of Sewage Sludge

; ; ; Kawakami, Waichiro

JAERI-M 85-098, 13 Pages, 1985/07

JAERI-M-85-098.pdf:0.47MB

no abstracts in English

Journal Articles

Radiolysis of ammonia in nitrogen; Effects of nitrogen monoxide and oxygen on decomposition of ammonia

; *; *;

Int.J.Appl.Radiat.Isot., 32, p.567 - 572, 1981/00

 Times Cited Count:3 Percentile:53.51(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Synthesis of high purity uranium mononitride from oxide through carbide

; *

Journal of Nuclear Science and Technology, 17(1), p.57 - 66, 1980/00

 Times Cited Count:5 Percentile:45.65(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Journal Articles

Radiation treatment of exhaust gases, 10; Formation of N$$_{2}$$O in irradiation of NH$$_{3}$$-containing mixture of H$$_{2}$$O,O$$_{2}$$ and N$$_{2}$$

; ; ; Machi, Sueo;

Journal of Nuclear Science and Technology, 16(12), p.907 - 912, 1979/00

 Times Cited Count:7

no abstracts in English

Journal Articles

Incommesurate satellite reflections in the ferroelectric phase of deuterated ammonium rochelle salt

;

Journal of the Physical Society of Japan, 45(2), p.711 - 712, 1978/02

 Times Cited Count:35

no abstracts in English

Journal Articles

Radiation treatment of exhaust gases, 5; Effect of NH$$_{3}$$ on the removal of NO in the moist mixture of O$$_{2}$$ and N$$_{2}$$

; ; ; Machi, Sueo;

Radiation Physics and Chemistry, 11, p.299 - 303, 1978/00

no abstracts in English

Journal Articles

31 (Records 1-20 displayed on this page)