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Effect of FeO concentration in sinter iron ore on reduction behavior in a hydrogen-enriched blast furnace

International Journal of Minerals,Metallurgy and Materials 2022年第10期29卷 1820-1829页

作者： Ko-ichiro Ohno Takayuki Maeda Kazuya Kunitomo masashi Hara Department of Materials Faculty of EngineeringKyushu University744 MotookaNishi-kuFukuoka 819-0395Japan Kashima Area East Nippon WorksNippon Steel Corporation3 HikariKashima CityIbaraki 314-0014Japan

Japan started the national project“COURSE 50”for CO_(2) reduction in the *** project aimed to establish novel technologies to reduce CO_(2) emissions with partially utilization of hydrogen in blast furnace-based ironmaking by 30%by around 2030 and use it for practical applications by *** idea is that instead of coke,hydrogen is used as the reducing agent,leading to lower fossil fuel consumption in the *** has been reported that the reduction behavior of hematite,magnetite,calcium ferrite,and slag in the sinter is different,and it is also considerably influenced by the sinter *** study aimed to investigate the reduction behavior of sinters in hydrogen enriched blast furnace with different mineral morphologies in CO-CO_(2)-H2 mixed *** an experimental sample,two sinter samples with significantly different hematite and magnetite ratios were prepared to compare their reduction *** reduction of wustite to iron was carried out at 1000,900,and 800℃ in a CO-CO_(2)-H2 atmosphere for the mineral morphology-controlled sinter,and the following findings were *** reduction rate of smaller amount of FeO led to faster increase of the reduction rate curve at the initial stage of ***-observations of reduced samples showed that the reaction proceeded from the outer periphery of the sample toward the inside,and a reaction interface was observed where reduced iron and wustite ***-observations revealed three layers,namely,wustite single phase in the center zone of the sample,iron single phase in the outer periphery zone of the sample,and iron oxide-derived wustite FeO and iron,or calcium ferritederived wustite'FeO'and iron in the reaction interface zone.A two-interface unreacted core model was successfully applied for the kinetic analysis of the reduction reaction,and obtained temperature dependent expressions of the chemical reaction coefficients from each mineral phases.

关键词： hydrogen reduction wustite hematite magnetite calcium ferrite two-interface unreacted core model COURSE50

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Troubleshooting of reinterventions after stent-by-stent placement for malignant hilar biliary obstruction(with videos)

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Hepatobiliary & Pancreatic Diseases International 2022年第5期21卷 500-502页

作者： Tadahisa Inoue Rena Kitano masashi Yoneda Department of Gastroenterology Aichi Medical University1-1 YazakokarimataNagakuteAichi 480-1195Japan

To the Editor:Biliary drainage is essential for controlling cholangitis and/or jaundice in patients with malignant hilar biliary obstruction,and endoscopy is the first choice of approach due to its less *** unresectable cases,placement of self-expandable metal stents(SEMSs)has been recommended over that of plastic stents due to their longer patency,and bilateral placement is also recommended to achieve higher clinical success and patency rates[1].

关键词： obstruction malignant stent

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Preventive approach against drug-induced pulmonary fibrosis through the suppression of epithelial-mesenchymal transition

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BIOCELL 2022年第8期46卷 1861-1865页

作者： masashi KAWAMI RYOKO YUMOTO MIKIHISA TAKANO Graduate School of Biomedical and Health Sciences Hiroshima UniversityHiroshima7348553Japan

A number of drugs induce pulmonary injury and subsequently lead to serious lung diseases such as pulmonary fibrosis as the adverse drug ***,an effective preventive approach against drug-induced pulmonary fibrosis has not been established due to poor understanding of common preventive targets in a variety of drugs showing pulmonary ***-mesenchymal transition(EMT),a cellular phenotypic change of the epithelial to mesenchymal state,contributes to the development of pulmonary fibrosis through the conversion of damaged alveolar epithelium into *** several drugs with pulmonary toxicity have been reported to induce EMT,EMT serves as a bridge between the drugs and pulmonary *** evidence supports the potential of EMT as a preventive target against drug-induced pulmonary ***,since there are mechanistic differences between the main pharmacological effect and EMT induced by the drug,prevention based on EMT suppression would be possible and would contribute to continuous clinical treatment with the drug to avoid EMT-mediated serious pulmonary ***,targeting EMT seems to be adequate for exerting a preventive effect since EMT in damaged alveolar epithelial cells occurs prior to the development of the pathophysiological state of the whole lung in a bleomycin-induced lung injury rat *** viewpoint deals with the benefits and perspectives of preventive approaches against druginduced pulmonary fibrosis through the suppression of EMT,which has rarely been addressed.

关键词： Drug-induced lung injury Epithelial-mesenchymal transition Pulmonary fibrosis α-smooth muscle actin

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Superior antibody and membrane protein‑specific T‑cell responses to CoronaVac by intradermal versus intramuscular routes in adolescents

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World Journal of Pediatrics 2024年第4期20卷 353-370页

作者： Jaime S.Rosa Duque Samuel M.S.Cheng Carolyn A.Cohen Daniel Leung Xiwei Wang Xiaofeng Mu Yuet Chung Tsun Ming Lau Manni Wang Wenyue Zhang Yanmei Zhang Howard H.W.Wong Leo C.H.Tsang Sara Chaothai Tsz Chun Kwan John K.C.Li Karl C.K.Chan Leo L.H.Luk Jenson C.H.Ho Wing Yan Li Amos M.T.Lee Jennifer H.Y.Lam Sau Man Chan Wilfred H.S.Wong Issan Y.S.Tam masashi Mori Sophie A.Valkenburg Malik Peiris Wenwei Tu Yu Lung Lau Department of Paediatrics and Adolescent Medicine The University of Hong KongHong KongChina School of Public Health The University of Hong KongHong KongChina HKU‑Pasteur Research Pole School of Public HealthThe University of Hong KongHong KongChina Research Institute for Bioresources and Biotechnology Ishikawa Prefectural UniversityNonoichiJapan Department of Microbiology and Immunology Peter Doherty Institute for Infectionand ImmunityUniversity of MelbourneMelbourneVICAustralia Center for Immunology and Infection C2i Hong KongChina

Background Optimising the immunogenicity of COVID-19 vaccines to improve their protection against disease is *** dosing by intradermal(ID)administration has been shown to be equally immunogenic as intramuscular(IM)administration for several vaccines,but the immunogenicity of ID inactivated whole severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)at the full dose is *** study(NCT04800133)investigated the superiority of antibody and T-cell responses of full-dose CoronaVac by ID over IM administration in *** Participants aged 11–17 years received two doses of IM or ID vaccine,followed by the 3rd dose 13–42 days *** and cellular immunogenicity outcomes were measured post-dose 2(IM-CC versus ID-CC)and post-dose 3(IMCCC versus ID-CCC).Doses 2 and 3 were administered to 173 and 104 adolescents,*** Spike protein(S)immunoglobulin G(IgG),S-receptor-binding domain(RBD)IgG,S IgG Fcγreceptor IIIa(FcγRIIIa)-binding,SNM[sum of individual(S),nucleocapsid protein(N),and membrane protein(M)peptide pool]-specific interleukin-2(IL-2)+CD4^(+),SNM-specific IL-2^(+)CD8^(+),S-specific IL-2^(+)CD8^(+),N-specific IL-2^(+)CD4^(+),N-specific IL-2^(+)CD8^(+)and M-specific IL-2^(+)CD4^(+)responses fulfilled the superior and non-inferior criteria for ID-CC compared to IM-CC,whereas IgG avidity was *** ID-CCC,S-RBD IgG,surrogate virus neutralisation test,90%plaque reduction neutralisation titre(PRNT90),PRNT50,S IgG avidity,S IgG FcγRIIIa-binding,M-specific IL-2^(+)CD4^(+),interferon-γ+CD8^(+)and IL-2^(+)CD8^(+)responses were superior and non-inferior to *** estimated vaccine efficacies were 49%,52%,66%and 79%for IM-CC,ID-CC,IM-CCC and ID-CCC,*** ID groups reported more local,mild adverse *** This is the first study to demonstrate superior antibody and M-specific T-cell responses by ID inactivated SARSCoV-2 vaccination and serves as the basis for future research to improve the

关键词： CoronaVac Coronavirus disease 2019 Immunity Intradermal Vaccine

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Greenhouse gas reduction of co-benefit-type wastewater treatment system for fish-processing industry: A real-scale case study in Indonesia

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Water Science and Engineering 2023年第3期16卷 271-279页

作者： Yoshiteru Hamatani Takahiro Watari masashi Hatamoto Takashi Yamaguchi Tjandra Setiadi Toshihiko Konda Nihon Suido Consultants Co. LtdTokyo 163-1122Japan Department of Civil and Environmental Engineering Nagaoka University of TechnologyNiigata 940-2188Japan Department of Chemical Engineering Hanoi University of Science and TechnologyHanoi 11615Vietnam Department of Science of Technology Innovation Nagaoka University of TechnologyNiigata 940-2188Japan Department of Chemical Engineering Institut Teknologi BandungJl.Ganesa 10Bandung 40132Indonesia

This study examined the application of co-benefit-type wastewater treatment technology in the fish-processing industry. Given that there was a dearth of information on fish-processing industrial wastewater in Indonesia, site surveys were conducted. For the entire fish-processing industry throughout the country, the dissemination rate of wastewater treatment facilities was less than 50%. Using a co-benefit approach, a real-scale swim-bed technology (SBT) and a system combining an anaerobic baffled reactor (ABR) with SBT (ABR–SBT) were installed in a fishmeal processing factory in Bali, Indonesia, and the wastewater system process performance was evaluated. In a business-as-usual scenario, the estimated chemical oxygen demand load and greenhouse gas (GHG) emissions from wastewater from the Indonesian fish-processing industry were 33 000 tons per year and 220 000 tons of equivalent CO_(2) per year, respectively. On the other hand, the GHG emissions in the co-benefit scenarios of the SBT system and ABR–SBT system were 98 149 and 26 720 tons per year, respectively. Therefore, introducing co-benefit-type wastewater treatment to Indonesia’s fish-processing industry would significantly reduce pollution loads and GHG emissions.

关键词： Indonesian fish-processing industry Co-benefit wastewater treatment Greenhouse gas emission mitigation Anaerobic baffled reactor Swim-bed technology

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Surgical treatment for a combined anterior cruciate ligament and posterior cruciate ligament avulsion fracture: A case report

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World Journal of Clinical Cases 2022年第12期10卷 3879-3885页

作者： Katsuhiro Yoshida Michiyuki Hakozaki Hideo Kobayashi masashi Kimura Shinichi Konno Department of Orthopaedic Surgery Fukushima Medical University School of MedicineFukushima 960-1295Japan Higashi-Shirakawa Orthopaedic Academy Fukushima Medical University School of MedicineFukushima 960-1295Japan Department of Orthopaedic Surgery Sukagawa HospitalFukushima 962-0022Japan Gunma Sports Medicine Research Center Zenshukai HospitalGunma 379-2115Japan

BACKGROUND Independent avulsion fractures with anterior cruciate ligament(ACL)or posterior cruciate ligament(PCL)attachment are relatively common among tibial intercondylar eminence fractures,and their postoperative outcomes are generally ***,huge avulsion fractures of the intercondylar eminence containing the attachment site of both the ACL and the PCL are extremely rare,and the reported clinical outcomes are *** SUMMARY We describe a 30-year-old Japanese male's huge avulsion fracture of the intercondylar eminence of a tibia containing the attachment site of both the ACL and PCL,together with a complete tear of the medial collateral ligament and a partial tear of both the medial and lateral menisci caused by a fall from a high *** of these injuries were treated surgically,with anatomical reduction and stable *** limb function at 1 year post-surgery was excellent(Lysholm score:100 points).CONCLUSION Although this patient's complete surgical repair was complex,it should be performed in similar cases for an excellent final clinical outcome.

关键词： Avulsion fracture Intercondylar eminence Tibia Anterior cruciate ligament Posterior cruciate ligament Meniscal tear

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Morphology and gene expression of sex‐determining region Y‐box 9 and runt‐related transcription factor 2 in centrifugally compressed cell collagen‐combined constructs (C^(6))

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Biosurface and Biotribology 2023年第3期9卷 78-83页

作者： Xu Ye masashi Yamazaki Wataru Ando Norimasa Nakamura Hiromichi Fujie Faculty of System Design Tokyo Metropolitan UniversityTokyoJapan Research Center for Medicine‐Engineering Collaboration TokyoJapan Department of Orthopaedic Surgery Kansai Rosai HospitalAmagasakiJapan Department of Orthopaedic Surgery Osaka University Graduate School of MedicineSuitaJapan Institute for Medical Science in Sports Osaka Health Science UniversityOsakaJapan Center for Advanced Medical Engineering and Informatics Osaka UniversitySuitaJapan

The authors previously developed a scaffold‐free tissue‐engineered construct(TEC)from mesenchymal stem cells(MSCs).Although the TEC exhibited even cell distribution and was successfully applied for cartilage repair in animal models,it is unsuitable for relatively large‐scale cartilage defects due to its small *** solve the problem,the authors recently developed a novel biomaterial,a centrifugally compressed cell‐collagen combined construct(C^(6))from a mixture of MSCs and atelocollagen,both of which are subjected to *** results of the previous study indicated that C^(6) exhibited high cell viability(70%)and sufficient cell distribution similar to that of the *** the present study,the morphology and gene expression of C^(6) were *** ex-amination indicated that C6 is six times thicker(approximately 1 mm)than the TEC after a 7‐day *** C^(6) remained unchanged in scale with increased cell density after a 21‐day *** electron microscopic observation indicated that C^(6) exhibited interconnected and porous microstructures,while the TEC had close‐knit *** transcriptase‐polymerase chain reaction analysis indicated that the expression of sex‐determining region Y‐box 9 and runt‐related transcription factor 2 was significantly higher in C^(6) than that in TEC.

关键词： biomaterials cartilage microstructures

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Moving computational multi-domain method for modelling the flow interaction of multiple moving objects

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Advances in Aerodynamics 2022年第1期4卷 78-95页

作者： Momoha Nishimura masashi Yamakawa Shinichi Asao Seiichi Takeuchi Mehdi Badri Ghomizad Department of Mechanical and System Engineering Kyoto Institute of TechnologyKyotoJapan Department of Mechanical Engineering College of Industrial TechnologyHyogoJapan

This study proposes a method for modelling the flow interaction of multiple moving objects where the flow field variables are communicated between multiple separate moving computational *** of using the conventional approach with a single fixed computational domain covering the whole flow field,this method advances the moving computational domain(MCD)method in which the computational domain itself moves in line with the motions of an object *** computational domains created around each object move independently,and the flow fields of each domain interact where the flows *** eliminates the spatial restriction for simulating multiple moving ***,a shock tube test verifies that the overset implementation and grid movement do not adversely affect the results and that there is communication between the grids.A second test case is conducted in which two spheres are crossed,and the forces exerted on one object due to the other’s crossing at a short distance are *** results verify the reliability of this method and show that it is applicable to the flow interaction of multiple moving objects.

关键词： Crossing Moving boundary problems Compressible flow Moving mesh method

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One-year outcomes and predictable factors for microhook ab interno trabeculotomy

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International Journal of Ophthalmology(English edition) 2022年第4期15卷 598-603页

作者： Daiki Sakai masashi Fujihara Satoshi Yokota Makoto Nakamura Yasuo Kurimoto Department of Ophthalmology Kobe City Eye HospitalKobe 650-0047Japan Department of Ophthalmology Kobe City Medical Center General HospitalKobe 650-0047Japan Department of Surgery Division of OphthalmologyKobe University Graduate School of MedicineKobe 650-0017Japan

AIM: To investigate the one-year outcomes and factors that influence the results of microhook ab interno trabeculotomy(μLOT). METHODS: The medical records of consecutive patients with open angle glaucoma who underwent μLOT(including combination of μLOT and cataract surgery) between Februar y 2018 and July 2019 were retrospectively reviewed. Surgical success was defined as the following: an intraocular pressure(IOP)≤21 mm Hg or IOP≤preoperative IOP with a reduced number of glaucoma eye drops, without additional glaucoma surgery, and assessed using KaplanMeier survival analysis. A multivariate Cox proportionalhazards regression model was used to investigate the factors associated with surgical ***: The 59 eyes of 59 patients comprising 28 eyes with primary open angle glaucoma(POAG) and 31 with secondary open angle glaucoma(SOAG) were included. The mean IOP and number of glaucoma eye drops significantly decreased from 25.3±7.2 mm Hg and 3.9±1.1, preoperatively to 16.1±4.4 mm Hg(P25 mm Hg within 2 wk post-surgery;P<0.001, a HR: 5.382, 95%CI:2.113-13.707) as independent factors associated with surgical ***: The μLOT is a good treatment option for POAG eyes. However, the postoperative course should be carefully followed in cases with postoperative IOP spike.

关键词： microhook ab interno trabeculotomy trabeculotomy ab interno minimally invasive glaucoma surgery survival analysis

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Square-Scheme Electrochemistry in Battery Electrodes

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Accounts of Materials Research 2022年第1期3卷 33-41页

作者： masashi Okubo Kosuke Kawai Zihan Ma Atsuo Yamad Department of Electrical Engineering and Bioscience School of Advanced Science and EngineeringWaseda UniversityTokyo 169-8555Japan Department of Chemical System Engineering School of EngineeringThe University of TokyoTokyo 113-8656Japan

CONSPECTUS:Sustainable development cannot be achieved without substantial technological *** instance,flexible electricity management requires smart power sourcing with advanced energy storage/conversion *** for abrupt power spikes/drops observed in renewable energy sources such as solar and wind require rapid load-leveling using high-power energy storage systems when they are integrated into a *** energy storage devices efficiently convert electrical and chemical energy,which can potentially function as distributed power *** these,lithium-ion batteries are a present de facto standard with their relatively high energy density and energy efficiencies that are based on topochemical intercalation chemistry,whereby guest lithium ions are(de)intercalated reversibly with simultaneous redox reactions and minimal structural ***,their energy density,power density,life-cycle cost,calendar life,and safety remain unsatisfactory for widespread *** the storage capacity is maximized,as a result of which a labile deep charge/discharge state is generated,to develop batteries with high energy density,subsequent irreversible phase transformations or chemical reactions occur in many *** combination of the reversible electrode reactions and the subsequent irreversible phase transformations sometimes causes a charge/discharge curve characterized by a large voltage hysteresis with 100%Coulombic *** a large voltage hysteresis significantly degrades the energy efficiency,unveiling the reaction mechanism is of primary importance in mitigating energy loss.

关键词： Battery lithium irreversible

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