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Electronic transmission of three-terminal pyrene molecular bridge

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Chinese Physics B 2009年第2期18卷 501-505页

作者：王利光张秀梅 Terence Kin Shun Wong Katsunori Tagami masaru Tsukada School of Science Jiangnan University School of Electrical and Electronic Engineering Nanyang Technological University Nano Technology Research Centre Waseda University

This paper investigates theoretically the electronic transmission spectra of the three terminal pyrene molecular bridge and the quantum current distribution on each bond by the tight-binding model based on nonequilibrium Green＇s function and the quantum current density approach, in which one π molecular orbital is taken into account per carbon atom when the energy levels and HOMO-LUMO gap are obtained. The transmission spectra show that the electronic transmission of the three terminal pyrene molecular bridge depends obviously on the incident electronic energy and the pyrene eigenenergy. The symmetrical and oscillation properties of the transmission spectra are illustrated. A novel plus-minus energy switching function is found. The quantum current distribution shows that the loop currents inside the pyrene are induced, and some bond currents are much larger than the input and the output currents. The reasons why the loop currents and the larger bond currents are induced are the phase difference of the atomic orbits and the degeneracy of the molecular orbits. The calculations illustrate that the quantum current distributions are in good agreement with Kirchhoff quantum current conservation law.

关键词： pyrene three terminals electronic transmission current distribution

SELECTIVE FORMATION OF OXYGENATED COMPOUNDS BY SILICA-SUPPORTED Ru-Co BIMETALLIC CLUSTER-DERIVED CATALYSTS IN CO HYDROGENATION

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Chinese Science Bulletin 1992年第4期37卷 347-348页

作者：肖丰收郭燮贤 ICHIKAWA masaru Department of Chemistry Jilin University Changchun 130023 PRC Dalian Institute of Chemical Physics Academia Sinica Dalian 116023 PRC Catalysis Research Center Hokkaido University Sapporo 060 Japan

It is well known that catalysts prepared from organometallic compounds exhibit high activity and selectivity for oxygenates in CO-based reactions such as CO hydrogenation and olefin hydroformylation, in contrast to the conventional metal catalysts from the usual way of the metal salts. It is also reported that bimetallic catalysts provide quite different

关键词： hydrogenation selectivity salts olefin usual alcohols silica carbonyl aldehyde molar

Performances of glaucoma operations with Kahook Dual Blade or iStent combined with phacoemulsification in Japanese open angle glaucoma patients

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International Journal of Ophthalmology(English edition) 2020年第6期13卷 941-945页

作者： Kentaro Iwasaki Yoshihiro Takamura Yusuke Orii Shogo Arimura masaru Inatani Department of Ophthalmology Faculty of Medical SciencesUniversity of FukuiFukui 910-1193Japan Department of Ophthalmology Obama HospitalFukui 917-8567Japan

AIM:To compare surgical outcomes of phacoemulsification combined with glaucoma surgical techniques performed with either Kahook Dual Blade(KDB)or iStent for Japanese patients with either primary open angle glaucoma or exfoliation ***:We retrospectively evaluated the surgical outcomes of 129 eyes of 84 Japanese patients with glaucoma who underwent KDB or 44 eyes of 34 patients who underwent phacoemulsification with iStent procedures combined with cataract *** primary outcome was surgical success or failure[with surgical failure being indicated by18 mm Hg as criterion A;IOP>14 mm Hg as criterion B on two consecutive study visits;or reoperation requirement].In addition,we assessed the number of postoperative glaucoma medications and the resulting ***:The probability of success was significantly higher in the KDB group than in the iStent group for criterion A(60.2%vs 46.4%,P=0.019).In the KDB group,the mean preoperative IOP of 19.8±7.3 mm Hg decreased significantly to 13.0±3.1 mm Hg(P<0.01),and the mean number of glaucoma medications at 2.5±1.4 decreased significantly to 1.6±1.6(P<0.01)12 mo *** the iStent group,the mean preoperative IOP of 17.8±2.9 mm Hg significantly decreased to 14.3±2.3 mm Hg(P<0.01),and the mean number of glaucoma medications at 2.2±1.1 decreased significantly to 0.9±1.4(P<0.01)12 mo *** overall IOP reduction percentage was higher in the KDB group(26.2%)than in the iStent group(19.0%)12 mo postoperatively(P=0.03).Hyphema occurred significantly more frequently in the KDB group(16.3%)than in the iStent group(2.3%,P=0.017).CONCLUSION:KDB and iStent procedures combined with cataract surgery both result in significant IOP and glaucoma medication reductions after the 12-month *** patients in the KDB group have a higher success rate for the target IOP of less than 18 mm Hg and a higher complication rate than those

关键词： glaucoma surgery surgical outcome Kahook Dual Blade iStent

Prognostic roles of preoperative α-fetoprotein and des-γ-carboxy prothrombin in hepatocellular carcinoma patients

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World Journal of Gastroenterology 2015年第16期21卷 4933-4945页

作者： Makoto Meguro Toru Mizuguchi Toshihiko Nishidate Kenji Okita Masayuki Ishii Shigenori Ota Tomomi ueki Emi Akizuki Koichi Hirata Department of Surgery Surgical Oncology and ScienceSapporo Medical University School of Medicine

AIM:To clarify the utility of using des-γ-carboxy prothrombin(DCP)andα-fetoprotein(AFP)levels to predict the prognosis of hepatocellular carcinoma(HCC)in patients with hepatitis B virus(HBV)and the hepatitis C virus(HCV)***:A total of 205 patients with HCC(105patients with HBV infection 100 patients with HCV infection)who underwent primary hepatectomy between January 2004 and May 2012 were enrolled *** AFP and DCP levels were used to create interactive dot diagrams to predict recurrence within 2 years after hepatectomy,and cutoff levels were *** in the HBV and HCV groups were classified into three groups:a group with low AFP and DCP levels(LL group),a group in which one of the two parameters was high and the other was low(HL group),and a group with high AFP and DCP levels(HH group).Liver function parameters,the postoperative recurrence-free survival rate,and postoperative overall survival were compared between *** survival curves were compared by logrank test using the Kaplan-Meier *** analysis using a Cox forward stepwise logistic regression model was conducted for a ***:The preoperative AFP cutoff levels for recurrence within 2 years after hepatectomy in the HBV and HCV groups were 529.8 ng/m L and 60 m AU/m L,respectively;for preoperative DCP levels,the cutoff levels were 21.0 ng/m L in the HBV group and 67 m AU/m L in the HCV *** HBV group was significantly different from the other groups in terms of vascular invasion,major hepatectomy,volume of intraoperative blood loss,and surgical *** differences were found between the LL group,the HL group,and the HH group in terms of both mean disease-free survival time(MDFST)and mean overall survival time(MOST):64.81±7.47 vs 36.63±7.62 vs 18.98±6.17mo(P=0.001)and 85.30±6.55 vs 59.44±7.87 vs46.57±11.20 mo(P=0.018).In contrast,the HCV group exhibited a significant difference in tumor size,vascular invasion,volu

关键词： Hepatocellular carcinoma Hepatitis B Hepatitis C Des-γ-carboxy prothrombin α-fetoprotein

Case of pseudo-Meigs' syndrome caused by gastric cancer-related metastatic ovarian tumor with prolonged survival

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World Journal of Gastrointestinal Oncology 2016年第11期8卷 801-804页

作者： masaru Okamoto Kazunori Maeda Atsushi Yanagitani Kiwamu Tanaka Department of General Internal Medicine Tottori Prefectural Central Hospital Department of Gastroenterology Tottori Prefectural Central Hospital

A 48-year-old woman presented with bilateral enlarged ovaries, ascites, bilateral pleural effusion, and advanced gastric cancer. Pleural fluid cytology did not reveal malignant cells. Oophorectomy, performed as a palliative procedure, was followed by rapid resolution of the pleural effusion and ascites. The patient was diagnosed with pseudo-Meigs’ syndrome, and underwent chemotherapy followed by partial gastrectomy. At the last follow-up, 84 mo following oophorectomy, she was alive, and free of disease recurrence, despite not receiving any further treatment. Pseudo-Meigs’ syndrome should be considered in patients with bilateral ovarian tumors, ascites and pleural effusion, and treatment such as oophorectomy may result in symptomatic improvement and better prognosis in similar patients.

关键词： Pseudo-Meigs&rsquo syndrome Ovarian tumor Gastric cancer Pleural effusion Ascites

Decreased hemoglobin after initial treatment is associated with treatment resistance in Kawasaki disease in Kobayashi risk stratification

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World Journal of Pediatrics 2020年第6期16卷 623-628页

作者： Yukari Atsumi Hiroshi Sakakibara Yoshihiko Morikawa Koichi Miyata Hiroyuki Yamagishi Masahiro Misawa masaru Miura Department of General Pediatrics Tokyo Metropolitan Children's Medical Center.TokyoJapan Clinical Research Support Center.Tokyo Metropolitan Children's Medical Center TokyoJapan Department of Cardiology.Tokyo Metropolitan Children's Medical Center.Tokyo Japan Department of Pediatrics Keio University School of MedicineTokyo.Japan Department of Pediatrics Tokyo Metropolitan Bokutoh HospitalTokyoJapan National Center for Global Health and Medicine.1-21-1.Toyama Shinjuku-kuTokyo 162-8655.Japan

Background Although Kawasaki disease(KD)is known to cause anemia,the relationship between its prognosis and hemoglobin level is less well *** We herein performed a secondary analysis of data from a previous study(Post-RAISE).Children aged 6 months to 2 years at the time of KD diagnosis were *** hemoglobin was defined as a decrease>10%on post-treatment day 2 compared with the level prior to the initial *** Of 1253 KD cases,treatment resistance was observed in 209(17%)and was significantly more frequent in the decreased hemoglobin group(37/167 vs.172/1086,P=0.041).Multivariable logistic regression analysis revealed that decreased hemoglobin was associated with resistance to the initial treatment(odds ratio 1.53;95%confidence interval 1.00-2.33;P=0.048).Conclusions Decreased hemoglobin was significantly associated with resistance to initial treatment in patients with KD.

关键词： Anemia Inflammation Hepcidin Kawasaki disease

Clinicopathological features and prognosis of surgical resected cases of biliary cancer with pancreaticobiliary maljunction

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Hepatobiliary & Pancreatic Diseases International 2020年第1期19卷 97-100页

作者： Tsukasa Takayashiki Hideyuki Yoshitomi Katsunori Furukawa Satoshi Kuboki masaru Miyazaki Masayuki Ohtsuka Department of General Surgery Graduate School of MedicineChiba University Department of Gastroenterological Surgery Mita HospitalInternational University of Health and Welfare

To the Editor:Pancreaticobiliary maljunction(PBM)is a congenital anomaly in which the pancreatic and bile ducts join anatomically outside of the duodenal wall away from the Oddi’s *** condition causes the reflux of pancreatic juice into the bile duct under high pressure,resulting in various pathologic *** features of PBM patients are common bile duct dilatation,long common channel,and high amylase levels in bile *** them,one of the most significant problems is the development of biliary cancer,including extrahepatic bile duct and gallbladder cancers[1].A nationwide survey in Japan reported biliary cancer in 21.6%of adult patients with PBM concomitant with congenital biliary dilatation,32.1%and 62.3%extrahepatic bile duct and gallbladder cancers,respectively[2].

关键词： biliary cancer congenital

Desulfovibrio vulgaris as a model microbe for the study of corrosion under sulfate-reducing conditions

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mLife 2022年第1期1卷 13-20页

作者： Toshiyuki ueki Derek R.Lovley Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationElectrobiomaterials InstituteNortheastern UniversityShenyangChina Department of Microbiology University of Massachusetts AmherstMAUSA.

Corrosion of iron-containing metals under sulfate-reducing conditions is an economically important *** strains now known as Desulfovibrio vulgaris served as the model microbes in many of the foundational studies that developed existing models for the corrosion of iron-containing metals under sulfate-reducing *** mechanisms for corrosion by *** include:(1)H2 consumption to accelerate the oxidation of Fe0 coupled to the reduction of protons to H2;(2)production of sulfide that combines with ferrous iron to form iron sulfide coatings that promote H2 production;(3)moribund cells release hydrogenases that catalyze Fe0 oxidation with the production of H2;(4)direct electron transfer from Fe0 to cells;and(5)flavins serving as an electron shuttle for electron transfer between Fe0 and *** demonstrated possibility of conducting transcriptomic and proteomic analysis of cells growing on metal surfaces suggests that similar studies on *** corrosion biofilms can aid in identifying proteins that play an important role in *** for making targeted gene deletions in *** are available for functional genetic *** approaches,coupled with instrumentation for the detection of low concentrations of H2,and proven techniques for evaluating putative electron shuttle function,are expected to make it possible to determine which of the proposed mechanisms for *** corrosion are most important.

关键词： corrosion Desulfovibrio electron shuttle extracellular electron transfer Fe0 oxidation hydrogenase hydrogen uptake sulfate reduction sulfide

Optical mesoscopic membrane sensor layouts for waterfree and blood-free toxicants

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Nano Research 2015年第10期8卷 3150-3163页

作者： Sherif A. El-Safty Mohamed Khairy Mohamed A. Shenashen Emad Elshehy Wojciech Warkocki masaru Sakai NationalInstituteforMaterialsScience(NIMS) 1-2-1SengenTsukuba-shiIbaraki305-0047Japan GraduateSchoolforScienceandEngineering WasedaUniversity3-4-1OkuboShinjuku-kuTokyo169-8555Japan CenterforResearchinIsotopesandEnvironmentalDynamics TsukubaUniversity1-1-1TennodaiTsukubaIbaraki305-8572Japan

Advances in fabrication of mesoscopic membrane sensors with unique structures and morphologies inside anodic alumina membrane （AAM） nanochannels have led to the development of various methods for detecting, visualizing, adsorbing, filtering, and recovering ultra-trace concentrations of toxic metal ions, such as Hg^2＋ and Pb^2＋, in water and blood. These often ＂one-pot＂ screening methods offer advantages over conventional methods in that they do not require sophisticated instruments or laborious sample preparation. In the present study, we fabricated two mesoscopic membrane sensors for naked-eye detection, recognition, filtration, and recovery of Hg^2＋ and Pb^2＋ in biological and environmental samples. These sensors were characterized by the dense immobilization of organic colorants on the mesopore surfaces of silica nanotubes that were constructed using the nanochannels of an AAM as a scaffold. We confirmed that the nanotubes were oriented along the long axis of the AAM nanochannels, open at both ends, and completely and uniformly filled with organic colorants; also, the dense immobilization of the organic colorants did not affect the speed of ion-to-ligand binding events. We used simple, desk-top, flow-through assays to assess the suitability of the developed membrane sensors for detection, removal, and filtration of Hg^2＋ and Pb^2＋ with respect to recyclability and continuous monitoring. Removal of the target ions from biological fluids was assessed by means of flow cytometric analysis. Our results demonstrate the potential of our membrane sensors to be used for preventing the health risks associated with exposure to toxic metal ions in the environment and blood.

关键词： health risks optical sensor mesoscopic nanotubes toxins blood