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Study on removal of microplastics using magnetic separation
Reo Ueda,Yoko Akiyama,Yuichiro Manabe,Fuminobu Sato 한국초전도저온학회 2022 한국초전도저온공학회논문지 Vol.24 No.3
In recent years, the impact of microplastics (MPs) on ecosystems is a serious problem. Since MPs are difficult to recover oncethey are dispersed into the environment, it is important to remove them at the source. We proposed a magnetic separation of primaryMPs (plastics manufactured in minute sizes) sized 10-100 μm that has not been removed in the sewage process, based on themagnetic seeding process. In this study, we used magnetite as a magnetic seeding agent, and conducted magnetic separationexperiments in the continuous process using a superconducting solenoidal magnet to investigate the feasibility of practical magneticseparation system of MPs. As a result, 85% separation rate was obtained by continuous separation using high gradient magneticseparation (HGMS) with hydrophobically treated magnetite as a magnetic seeding agent.
Iku Abe,Takahiro Kinoshita,Akio Kaito,Hideki Sunagawa,Masahiro Watanabe,Shizuki Sugita,Akiko Tonouchi,Reo Sato 대한위암학회 2017 Journal of gastric cancer Vol.17 No.2
The role of nodal station No. 14v (along the superior mesenteric vein) in lymphadenectomy for distal gastric cancer remains elusive. A 73-year-old woman underwent endoscopic submucosal dissection for gastric cancer, and was referred to our division for additional surgery because of pathologically non-curative resection. A laparoscopic distal gastrectomy with D1+ dissection was performed, with a final diagnosis of pT1bN1M0, Stage IB (2 nodal metastases to No. 6). Four months post-surgery, abdominal computed tomography revealed a 14-mm solitary nodule along the superior mesenteric vein. The lesion was excised and pathologically identified as a lymph node metastasis. Adjuvant chemotherapy with tegafur- gimeracil-oteracil potassium (S-1) was administered for the metastasis. Presently the patient survives without recurrence, 5.5 years after the second operation. Our findings suggest that there is lymphatic flow from the No. 6 to the No. 14v nodal station. Some patients with a No. 6 metastasis may benefit from a No. 14v lymphadenectomy, even in early-staged disease.
Abe, Iku,Kinoshita, Takahiro,Kaito, Akio,Sunagawa, Hideki,Watanabe, Masahiro,Sugita, Shizuki,Tonouchi, Akiko,Sato, Reo The Korean Gastric Cancer Association 2017 Journal of gastric cancer Vol.17 No.2
The role of nodal station No. 14v (along the superior mesenteric vein) in lymphadenectomy for distal gastric cancer remains elusive. A 73-year-old woman underwent endoscopic submucosal dissection for gastric cancer, and was referred to our division for additional surgery because of pathologically non-curative resection. A laparoscopic distal gastrectomy with D1+ dissection was performed, with a final diagnosis of pT1bN1M0, Stage IB (2 nodal metastases to No. 6). Four months post-surgery, abdominal computed tomography revealed a 14-mm solitary nodule along the superior mesenteric vein. The lesion was excised and pathologically identified as a lymph node metastasis. Adjuvant chemotherapy with tegafur-gimeracil-oteracil potassium (S-1) was administered for the metastasis. Presently the patient survives without recurrence, 5.5 years after the second operation. Our findings suggest that there is lymphatic flow from the No. 6 to the No. 14v nodal station. Some patients with a No. 6 metastasis may benefit from a No. 14v lymphadenectomy, even in early-staged disease.