{"title":"Aliphatic Amine Interference in Indophenol Reaction for Ammonia-Nitrogen Determination and Its Possibility as Quantitative Method for Aliphatic Amines","authors":"S. Akao","doi":"10.2965/jswe.46.1","DOIUrl":"https://doi.org/10.2965/jswe.46.1","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80434853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Mikami, Seiki Igarashi, M. Hatakeyama, Takaaki Watanabe, Takumi Iida, T. Kawajiri, Kaii Suezawa
{"title":"Environmental Characteristics of Nutrients and Recent Changes in Blue-green Algae in the Aerobic Layer of Meromictic Lake Abashiri","authors":"H. Mikami, Seiki Igarashi, M. Hatakeyama, Takaaki Watanabe, Takumi Iida, T. Kawajiri, Kaii Suezawa","doi":"10.2965/jswe.46.47","DOIUrl":"https://doi.org/10.2965/jswe.46.47","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90805229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of Land Use Type on Water Quality and Organisms in a Small River of the Shizukuishi River Basin, Iwate Prefecture, Japan","authors":"Morio Tsuji, Tomoya Takahashi, Masaki Suzuki","doi":"10.2965/jswe.46.61","DOIUrl":"https://doi.org/10.2965/jswe.46.61","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90089505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relationship between General Sewage Water Quality and Sewershed Characteristics in Tokyo Metropolitan Area","authors":"Yamato Miyawaki, Yuta Hatano, C. Yoshimura","doi":"10.2965/jswe.46.35","DOIUrl":"https://doi.org/10.2965/jswe.46.35","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86475747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yasuo Hoshiai, Shinichiro Ban, Hiroshi Ashizawa, Jun Kudou, Kazunori Miwa, Atsushi Higurasi, Hideyuki Yamaguchi, A. Terada, K. Hata, Shiro Kawano
{"title":"Nitrification Potentials in River Estuary Receiving High-Concentration Ammonium Brine Waste from Natural Gas and Iodine Production Plants","authors":"Yasuo Hoshiai, Shinichiro Ban, Hiroshi Ashizawa, Jun Kudou, Kazunori Miwa, Atsushi Higurasi, Hideyuki Yamaguchi, A. Terada, K. Hata, Shiro Kawano","doi":"10.2965/jswe.46.103","DOIUrl":"https://doi.org/10.2965/jswe.46.103","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79850617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Changes of Sediment Microbial Flora under the Minamibenten Bridge of the Hirano River Sediment Remediation Project","authors":"Satoshi SODA, Naomi KOJIMA","doi":"10.2965/jswe.46.141","DOIUrl":"https://doi.org/10.2965/jswe.46.141","url":null,"abstract":"合流式下水道越流水が流入する平野川では, 底質から発生するガスによって浮上するスカムが問題となっている。本研究では, 大阪府が2021～2022年に実施した底質改善の実証事業の効果を底質微生物叢の変化から検証することを目的とし, 16S rRNA遺伝子を対象とした次世代シーケンサー解析を行った。南弁天橋付近の水深4 mの底質の試験区には, 約二ヵ月ごとに硝酸カルシウムが散布された。底質は極めて嫌気状態にあり, メタン生成古細菌Methanosaeta属が優占し, 硫酸還元細菌は少なかった。河川表層で増殖し, 底質に沈降したと考えられる緑藻の葉緑体DNAも検出された。メタン生成古細菌の優占が継続したが, 試験区の微生物叢は, Betaproteobacteria綱, Methylophilales目, Thiobacillus属の細菌の比率が高くなり, 酸化還元電位の上昇や全硫化物含有量の低下によって特徴づけられた。","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135355912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Kitamura, E. Masunaga, K. Ayukawa, T. Ouchi, Miyuki Yuzawa, Kazuki Satou, Y. Seike, T. Fukushima
{"title":"Effect of Oxygen Consumption by Bottom-Layer Water and Sediment on Formation of Hypoxic Water in Lake Kitaura","authors":"T. Kitamura, E. Masunaga, K. Ayukawa, T. Ouchi, Miyuki Yuzawa, Kazuki Satou, Y. Seike, T. Fukushima","doi":"10.2965/jswe.46.93","DOIUrl":"https://doi.org/10.2965/jswe.46.93","url":null,"abstract":"","PeriodicalId":16300,"journal":{"name":"Journal of Japan Society on Water Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87143806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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