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Accelerated biodegradation of nitrophenols in the rhizosphere of Spirodela polyrrhiza

Journal of Environmental Sciences 2012年第5期24卷 800-807页

作者： Risky Ayu Kristanti Masahiro Kanbe tadashi toyama Yasuhiro Tanaka Kazuhiro Mori Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi 4-3-11 Takeda Kofu Yamanashi 400-8511 Japan

We investigated the biodegradation of 2-nitrophenol （2-NP）, 4-nitrophenol （4-NP）, and 2,4-dinitrophenol （2,4-DNP） in the rhizosphere of Spirodela polyrrhiza plants by conducting degradation experiments with three river water samples supplemented with each nitrophenol （NP）. We then isolated NP-degrading bacteria both from the S. polyrrhiza roots and from the river water. In the river water samples, removal of the three NP was accelerated in the presence of S. polyrrhiza plants. The three NPs persisted in an autoclaved solution with sterile plants suggests that NP removal was accelerated largely by bacterial NP biodegradation rather than by adsorption and uptake by the plants. We isolated 8 strains of NP-degrading bacteria： 6 strains from the S. polyrrhiza roots and 2 strains from river water without the plants. The 2-NP- and 2,4-DNP-degrading bacteria were isolated only from the S. polyrrhiza roots. The 4-NP- degrading bacteria different from those isolated from the river water samples were also found on S. polyrrhiza roots. The 2-NP- and 4-NP-degrading strains isolated from the roots utilized the corresponding NP （0.5 mmol/L） as the sole carbon and energy source. The 2,4-DNP-degrading strains isolated from the roots showed substantial 2,4-DNP-degrading activity, but the presence of other carbon and energy sources was required for their growth. The isolated NP-degrading bacteria from the roots must have contributed to the accelerated degradation of the three NPs in the rhizosphere of S. polyrrhiza. Our results suggested that rhizoremediation with S. polyrrhiza may be effective for NP-contaminated surface water.

关键词： Spirodela polyrrhiza rhizosphere nitrophenol biodegradation

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Accelerated degradation of a variety of aromatic compounds by Spirodela polyrrhiza-bacterial associations and contribution of root exudates released from S. polyrrhiza

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Journal of Environmental Sciences 2010年第4期22卷 494-499页

作者： Hai Hoang Ning Yu tadashi toyama Daisuke Inoue Kazunari Sei Michihiko Ike Division of Sustainable Energy and Environmental Engineering Osaka University Suita Osaka 565-0871 Japan Division of Applied Sciences Muroran Institute of Technology Muroran Hokkaido 050-8585 Japan

Removal experiments of phenol, aniline, 2,4-dichlorophenol, nonylphenol and bisphenol A （BPA） using Spirodela polyrrhiza- bacterial associations revealed that all compounds but BPA underwent accelerated removal. The mechanisms differed depending on the substrates. It was found that S. polyrrhiza has a great ability to release phenolic compound-rich root exudates, and the exudates seem to stimulate bacterial degradation of a variety of aromatic compounds.

关键词： accelerated biodegradation aromatic compounds rhizosphere root exudates Spirodela polyrrhiza

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SURFACTANTS DEGRADING ACTIVITIES AROUND RHIZOSPHERE OF FLOATING WEEDS

SURFACTANTS DEGRADING ACTIVITIES AROUND RHIZOSPHERE OF FLOAT...

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第二届中日化工学术研讨会

作者： Kazuhiro MORI tadashi toyama Kazunari SEI Tetsuro KOHNO Department of Civil and Environmental Engineering Faculty of Engineering Yamanashi University Kofu 400-8511 Japan Department of Civil and Environmental Engineering Faculty of Engineering Yamanashi University Kofu 400-8511 Japan Department of Civil and Environmental Engineering Faculty of Engineering Yamanashi University Kofu 400-8511 Japan Department of Civil and Environmental Engineering Faculty of Engineering Yamanashi University Kofu 400-8511 Japan

＜正＞ INTRODUCTIONIn Japan, the sewer systems cover 60 and over percent people. However, various kinds of chemical compounds used directly in the fields or contained in the nontreated wastewater are flowing into the water environments. These compounds may be degraded by the saprobes of the ecosystems in the water environments. But the behavior of these

关键词： Floating Weeds Rhizosphere Artificial Surfactant Biodegradation

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Long-term prognosis of focal segmental glomerulosclerosis treated with therapeutic low-density lipoprotein-apheresis in patients with severe kidney dysfunction and proteinuria

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Rheumatology & Autoimmunity 2023年第1期3卷 35-42页

作者： Shinji Kitajima Megumi Osima Hisayuki Ogura Shiori Nakagawa Yuta Yamamura Taito Miyake Taro Miyagawa tadashi toyama Akinori Hara Norihiko Sakai Miho Shimizu Takashi Wada Yasunori Iwata Department of Nephrology and Laboratory Medicine Faculty of MedicineInstitute of MedicalPharmaceutical and Health SciencesGraduate School of Medical SciencesKanazawa UniversityKanazawaJapan Division of Blood Purification Kanazawa University HospitalKanazawaJapan

Background:The prognosis of focal segmental glomerulosclerosis patients with nephrotic syndrome is estimated to be 10%-20%in 5 years and 30%-50%in 10 years,leading to end-stage kidney *** response rate with steroid therapy is 40%-60%.Therapeutic low-density lipoprotein-apheresis(LDL-A)may be effective in patients with steroid *** regarding the long-term prognosis of patients with focal segmental glomerulosclerosis receiving this therapy is ***:We investigated the effectiveness of treatment in 50 patients with primary focal segmental glomerulosclerosis diagnosed between 1961 and 2017 at Kanazawa University Hospital and related *** patients were observed at least 12 months after biopsy or until end-stage kidney disease occurrence or ***:LDL-A was performed in four patients who presented with steroidresistant nephrotic syndrome(two patients had concurrent acute renal failure for which hemodialysis was performed).In comparison with 17 patients who did not receive LDL-A after 1989,the LDL-A group had higher urinary protein excretion(13.7 vs.5.2 g/day,P=0.053)and serum creatinine(4.11 vs.1.65 mg/dL)levels at onset,and a numerically higher remission rate(75.0%vs.58.7%)compared with the nonlipoprotein-apheresis ***:Therapeutic LDL-A can be performed for critical cases and may improve the remission rate.

关键词： apheresis end-stage kidney disease focal segmental glomerulosclerosis LDL prognosis

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Influence of morphology of hollow silica-alumina composite spheres on their activity for hydrolytic dehydrogenation of ammonia borane

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Journal of Advanced Ceramics 2017年第4期6卷 368-375页

作者： Naoki toyama Ryota OGAWA Haruki INOUE Shinobu OHKI Masataka TANSHO tadashi SHIMIZU Tetsuo UMEGAKI Yoshiyuki KOJIMA Department of Materials&Applied Chemistry College of Science&EngineeringNihon University1-8-14Kanda-SurugadaiChiyoda-KuTokyo 101-8308Japan National Institute for Materials Science 3-13SakuraTsukubaIbaraki 305-0003Japan

Hollow silica-alumina composite spheres were prepared by a polystyrene(PS)template method using various amounts of PS *** hollow spheres prepared using 40 g were found to be with a diameter of about 300 nm in scanning electron microscopy,and transmission electron microscopy demonstrated their hollow sphere *** the nitrogen adsorption isotherm results,the homogeneous hollow spheres prepared using 40 g of the PS suspension were found to be an ordered pore *** activities of the hollow spheres prepared using various amounts of the PS suspension for hydrolytic dehydrogenation of ammonia borane were *** results showed that 10,7,and 6 mL of hydrogen were evolved from the aqueous ammonia borane solution in about 40 min in the presence of the hollow spheres prepared using 40,80,and 120 g of PS suspension,*** homogeneous hollow spheres with an ordered pore structure showed the highest activity among all the hollow *** amount of acid sites and the coordination number of aluminum active species were characterized using neutralization titration and solid-state ^(27)Al magic angle spinning nuclear magnetic resonance *** homogeneous hollow spheres with an ordered pore structure had high amount of acid sites and 4-coordinated aluminum *** relative proportion of 4-coordinated aluminum species was related to the dispersion of aluminum *** results indicate that the homogeneous hollow spheres with an ordered pore structure showed the high activity because of high amount of acid sites induced by the highly dispersed aluminum species.

关键词： ammonia borane morphology hollow silica-alumina composite spheres dispersion acid sites

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Non-cooperative optimization games in market-oriented overlay networks： an integrated model of resource pricing and network formation

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Frontiers of Computer Science 2011年第4期5卷 496-505页

作者： Yutaka OKAIE tadashi NAKANO Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan

In this paper, we formulate a non-cooperative optimization game in market-oriented overlay networks where participating peers share their own computing resources to earn virtual money called energy. We model an overlay network as a set of non-cooperative resource providing peers, called platforms, that perform resource pricing and topology management to maximize their own energy gains. Resource consuming peers, called agents, are simply designed to migrate platform-to-platform to find the least expensive resources in the network. Simulation results are presented to demonstrate the market dynamics as well as the global properties of the network, i.e., resource price and network topology, that emerge from local interactions among the group of peers.

关键词： Overlay networks market mechanisms non-cooperative games mobile agents

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Amelanotic malignant melanoma of the esophagus:Report of two cases with immunohistochemical and molecular genetic study of KIT and PDGFRA

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World Journal of Gastroenterology 2009年第21期15卷 2679-2683页

作者： tadashi Terada Department of Pathology Shizuoka City Shimizu Hospital

The author reports herein two cases of amelanotic malignant melanoma of the esophagus. Case 1 is an 87-year-old woman who was admitted to our hospital because of nausea and vomiting. Endoscopic examination revealed an ulcerated tumor of the distal esophagus, and a biopsy was taken. The biopsy showed malignant polygonal and spindle cells. No melanin pigment was recognized. Immunohistochemically, the tumor cells were positive for melanosome （HMB45）, S100 protein, KIT and Platelet derived growth factor receptor-α （PDG- FRA）. The patient was treated by chemotherapy and radiation, but died of systemic metastasis 12 mo after the presentation. Case 2 is a 56-year-old man presenting with dysphagia. Endoscopic examination revealed a polypoid tumor in the middle esophagus, and a biopsy was obtained. The biopsy showed malignant spindle cells without melanin pigment. Immunohistochemically, the tumor cells were positively labeled for melanosome,S100 protein, KIT and PDGFRA. The patient refused operation, and was treated by palliative chemotherapy and radiation. He died of metastasis 7 mo aEer the admission. In both cases, molecular genetic analyses of gene （exons 9, 11, 13 and 17） and PDGFRA gene （exons 12 and 18） were performed by the PCR direct sequencing method, which showed no mutations of KIT and PDGFRA genes. This is the first report of esophageal malignant melanoma with an examination of the expression of KIT and PDGFRA and the mutational status of K/T and PDGFRA genes.

关键词： Esophagus Amelanotic melanoma KIT Platelet derived growth factor receptor-c~

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Schistosomal appendicitis:Incidence in Japan and a case report

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World Journal of Gastroenterology 2009年第13期15卷 1648-1649页

作者： tadashi Terada Department of Pathology Shizuoka City Shimizu Hospital

Schistosomal appendicitis is very rare in developed countries like the USA,Europe,and *** author reviewed 311 pathologic archival specimens of vermiform appendix over the past 10 *** case of schistosomal appendicitis was ***,the incidence of this disease was 0.32% in all appendices surgically resected in our *** patient was a 41-year-old woman presenting with lower abdominal *** was a sailor traveling to many countries including endemic *** examination,laboratory data,and imaging modalities suggested an acute appendicitis,and appendectomy was performed under the diagnosis of ordinary ***,numerous schistosomal eggs were present in the vasculatures throughout the appendiceal *** of the eggs were *** foreign body reaction was also *** appendicitis was phlegmonous consisting of severe infiltrations of neutrophils and *** serositis was also *** of feces revealed numerous eggs of Schistosoma *** should be aware of schistosomal appendicitis.

关键词： Appendix Histopathology Pathologicarchival specimens Schistosomiasis Acute appendicitis

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Primary multiple extragastrointestinal stromal tumors of the omentum with different mutations of c-kit gene

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World Journal of Gastroenterology 2008年第47期14卷 7256-7259页

作者： tadashi Terada Department of Pathology Shizuoka Municipal Shimizu HospitalMiyakami 1231Shimizu-Ku424-8636ShizuokaJapan

The author reports a very rare case of sporadic primary multiple extragastrointestinal stromal tumors (EGISTs) of the omentum associated with different mutations of the exon 11 of the c-kit gene in a 75-year-old man with gastric cancer. During an operation for the cancer, two solid tumors (10 mm and 8 mm) were found in the omentum. Both tumors consisted of cellular spindle cells. Mitotic figures were two and three per 50 high power fields. The tumor cells were positive for KIT, CD34 and vimentin, but negative for desmin, S100 protein, α-smooth muscle actin and p53 protein. Ki67 labeling was 2% and 3%. The larger EGIST showed a deletion of codons 552-558 of exon 11 of the c-kit gene, while the smaller EGIST had a point mutation at codon 559 (GTT←GAT) in exon 11 of the c-kit gene. Exons 9, 13, and 17 of the c-kit gene, and exons 12 and 18 of the platelet derived growth factor receptor α genes showed no mutations. The case shows that sporadic multiple EGISTs can occur in the omentum.

关键词： Omentum Extragastrointestinal stromal tumors c-kit Platelet derived growth factor receptor CD34

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Research exploring greenhouse environment control over the last 50 years

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 1-7页

作者： tadashi Takakura NARO Institute for Rural Engineering TsukubaIbaraki 305-8609Japan

Environments do not exist in *** main components in greenhouse systems are *** consideration of plants,analysis of greenhouse environments and environmental control of greenhouses can be accomplished,although it is not simple to *** attempts were undertaken to analyze greenhouse environments and then reproduce *** rate effects on plant photosynthesis in a growth chamber were reported in *** simulations then became a main subject of *** first dynamic computer simulation of a greenhouse environment including plants was published in *** to innovations of computer technology,the use of minicomputers and microcomputers spread in many *** measuring the net photosynthesis of lettuce plants grown under artificial lighting,air temperature was optimized using a minicomputer with the hill-climbing *** method was designated as the Speaking Plant Approach to environment control(SPA).After the author developed the first reported environmental control system in Japan,systems using microcomputers spread widely for greenhouse environmental ***-based expert systems were tested for plant ***,a machine vision system was developed to detect critical moments for watering of muskmelon *** first feed-forward control method for greenhouses with a large heat mass was *** space farming was tested in 1996 to assess gravity effects on ***-saving aspects such as solar sterilization,ground heat storage system,and storage using phase change material(PCM)have been *** of ordinary solarimeters were reported in 2008 along with an approach to estimate evapotranspiration in a greenhouse without the effect of so-called cosine ***,this technique was expanded to estimate photosynthesis of the plant canopy in a greenhouse using newly developed sensor units.

关键词： computer control evapotranspiration global and diffused solar radiation nondestructive and non-contact measurement photosynthesis SPA

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