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Aerodynamic Study on Supersonic Flows in High-Velocity Oxy-Fuel Thermal Spray Process

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Journal of Thermal Science 2005年第2期14卷 126-129页

作者： Hiroshi KATANODA takeshi MATSUOKA Seiji KURODA Jin KAWAKITA Hirotaka FUKANUMA Kazuyasu MATSUO The University of Kitakyushu 1-1 Hibikino Wakamatsu-kuKitakyushuFukuoka808-0135 JapanTakagi Precision Dies Co. Ltd.2-4-1 IshidaminamiKokuraminami-kuKitakyushuFukuoka802-0836 JapanNational Institute for Materials Science 1-2-1SengenTsukubaIbaraki305-0047 JapanNational Institute for Materials Science 1-2-1SengenTsukubaIbaraki305-0047 JapanPlasma Giken Co. Ltd.2-1-12BijogiTodaSaitama335-0031 JapanThe University of Kitakyushu 1-1 HibikinoWakamatsu-kuKitakyushuFukuoka808-0135 Japan

To clarify the characteristics of gas flow in high velocity oxy-fuel (HVOF) thermal spray gun, aerodynamic research is performed using a special gun. The gun has rectangular cross-sectional area and sidewalls of optical glass to visualize the internal flow. The gun consists of a supersonic nozzle with the design Mach number of 2.0 followed by a straight passage called barrel. Compressed dry air up to 0.78 MPa is used as a process gas instead of combustion gas which is used in a commercial HVOF gun. The high-speed gas flows with shock waves in the gun and jets are visualized by schlieren technique. Complicated internal and external flow-fields containing various types of shock wave as well as expansion wave are visualized.

关键词：超声流冲击波热喷涂内流热处理

An anomaly in persistent right umbilical vein of portal vein diagnosed by ultrasonography

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World Journal of Gastroenterology 2005年第8期11卷 1179-1181页

作者： Shigeo Nakanishi Katsuya Shiraki Kouji Yamamoto Mutsumi Koyama takeshi Nakano First Department of Internal Medicine Matsusaka Central General Hospital of Medicine

AIM: To detect the anomaly in the persistent right umbilical vein (PRUV) of portal vein (PV) with deviation of the ligamentum tere and left-sided gallbladder. METHODS: A total of 5783 candidates for routine analysis were evaluated for hepatic vascular abnormalities by ultrasonography. RESULTS: Ten candidates (0.17%) had a portal vein anomaly with a rightward-deviated ligamentum tere. The blood-flow velocity in the PRUV of the portal vein (17.7±3.0 cm/s) of the 10 cases was similar to that of the right anterior portal trunk (17.6±4.1 cm/s). However, the vessel diameter of the PRUV (φ12.4±4.4 mm) was larger than the right anterior portal trunk (φ6.1?.9 mm). Therefore, flow volume in the anomalous portion (0.97±0.30 L/min) was more than that in the right anterior portal trunk (0.18±0.05 L/min). CONCLUSION: The anomaly plays an important role in intra-hepatic PV flow.

关键词： PV anomaly Persistent right umbilical vein Ultrasonography

Evaluation of formaldehyde emission from particleboard using the large chamber and desiccator method at various loading ratios

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Journal of Forestry Research 2013年第1期24卷 137-142页

作者： QUE Ze-li WANG Fei-bin MA Ling-fei Furuno takeshi Nanjing Forestry University Research Institute for Sustainable Humanosphere Kyoto University College of Wood Science and Technology Zhejiang A & F University Faculty of Science and Engineering Shimane University

We studied formaldehyde emission from uncoated particleboard with 16-mm thickness using the large chamber and the desiccator method. A chamber of 28.4 m3 was installed to simulate a mobile home. The formaldehyde off-gassing properties of particleboard were evaluated using the chamber. The relationship between the concentration obtained by the chamber and the values by the desiccator test was discussed in this study under different conditions of conditioning day, air exchange, and loading ratio. These two methods were compared and discussed regarding the formaldehyde emission level. Three loading ratios, 0.429 m2/m3, 0.264 m2/m3, and 0.132 m2/m3, were chosen to represent different applications of particleboard products. There was strong correlation between emissions and air exchange rates at equal product-loading ratios in the large chamber, the related coefficient R 2 exceeded 0.90. There was also an indication of a generic correlation between the large chamber and the two-hour desiccator test with a single product designated loading ratio, air exchange rate, and climatic conditions.

关键词： formaldehyde emission particleboard large chamber desiccator

Portal hypertensive colopathy in patients with liver cirrhosis

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World Journal of Gastroenterology 2005年第20期11卷 3127-3130页

作者： Keiichi Ito Katsuya Shiraki Takahisa Sakai Hitoshi Yoshimura takeshi Nakano First Department of Internal Medicine Mie University School of Medicine 2-174 Edobashi Tsu Mie 514-8507Japan

AIM: In patients with liver cirrhosis and portal hypertension, portal hypertensive colopathy is thought to be an important cause of lower gastrointestinal hemorrhage. In this study, we evaluated the prevalence of colonic mucosal changes in patients with liver cirrhosis and its clinical significance. METHODS: We evaluated the colonoscopic findings and liver function of 47 patients with liver cirrhosis over a 6-year period. The main cause of liver cirrhosis was post-viral hepatitis (68%) related to hepatitis B (6%) or C (62%) infection. All patients underwent upper gastrointestinal endoscopy to examine the presence of esophageal varices, cardiac varices, and congestive gastropathy, as well as a full colonoscopy to observe changes in colonic mucosa. Portal hypertensive colopathy was defined endoscopically in patients with vascular ectasia, redness, and blue vein. Vascular ectasia was classified into two types: type 1, solitary vascular ectasia; and type 2, diffuse vascular ectasia. RESULTS: Overall portal hypertensive colopathy was present in 31 patients (66%), including solitary vascular ectasia in 17 patients (36%), diffuse vascular ectasia in 20 patients (42%), redness in 10 patients (21%) and blue vein in 6 patients (12%). As the Child-Pugh class increased in severity, the prevalence of portal hypertensive colopathy rose. Child-Pugh class B and C were significantly associated with portal hypertensive colopathy. Portal hypertensive gastropathy, esophageal varices, ascites and hepatocellular carcinoma were not related to occurrence of portal hypertensive colopathy. Platelet count was significantly associated with portal hypertensive colopathy, but prothrombin time, serum albumin level, total bilirubin level and serum ALT level were not related to occurrence of portal hypertensive colopathy. CONCLUSION: As the Child-Pugh class worsens and platelet count decreases, the prevalence of portal hypertensive colopathy increases in patients with liver cirrhosis. A colonoscopi

关键词： Portal hypertensive colopathy Liver cirrhosis

Structural effect of fluorophore on phenylboronic acid fluorophore/cyclodextrin complex for selective glucose recognition

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Frontiers of Chemical Science and Engineering 2020年第1期14卷 53-60页

作者： takeshi Hashimoto Mio Kumai Mariko Maeda Koji Miyoshi Yuji Tsuchido Shoji Fujiwara Takashi Hayashita Department of Materials and Life Sciences Faculty of Science and TechnologySophia UniversityTokyo102-8554Japan Department of Life Science and Medical Bioscience Graduate School of Advanced Science and EngineeringWaseda University(TWIns)Tokyo162-8480Japan Department of Current Legal Studies Faculty of LawMeiji Gakuin UniversityKanagawa244-8539Japan

Based on the design of the fluorescent site of a fluorescent probe,we have created a unique system that changes its twisting response to *** probes were synthesized,in which phenylboronic acid and two kinds of aromatic fluorescent site(pyrene or anthracene)were conjugated by an amide *** the fluorescence measurement of pyrene-type probe 1,dimer fluorescence was observed at high *** induced circular dichroism(ICD)experiments,a response was observed only in the presence of glucose and γ-cyclodextrin,and no response was seen with *** the other hand,in the fluorescence measurement of anthracene-type probe 2,dimer fluorescence was observed in the presence of both glucose and galactose,and the fluorescence was different from the case of *** the ICD spectra of these inclusion complexes were measured,an inversion of the Cotton effect,which indicates a change in the twisted structure,was observed in galactose and *** differences in response to monosaccharides may originate in the interaction between the fluorescent site and the cyclodextrin cavity.

关键词： sugar recognition phenylboronic acid cyclodextrin fluorescence response induced circular dichroism

Algicidal effect of bacterial isolates of Pedobacter sp. against cyanobacterium Microcystis aeruginosa

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Water Science and Engineering 2012年第4期5卷 375-382页

作者： Li YANG Hiroto MAEDA takeshi YOSHIKAWA Gui-qin ZHOU College of Environment Hohai University College of Environment Nanjing University of Technology Laboratory of Microbiology Faculty of FisheriesKagoshima University

The aim of this study was to isolate algicidal bacteria so as to control harmful cyanobacterium Microcystis aeruginosa （M. aeruginosa） blooms using biological methods. Nine bacterial strains were isolated to inhibit the growth ofM. aeruginosa, among which the Mail 1-5 bacterial strain exhibited remarkable algicidal activity against M. aeruginosa cells during the test. Based on the 16S rDNA analysis, the isolated Mail 1-5 was identified as Pedobacter sp. through morphology and homology research. The results of cocultivation of the cyanobacteria with MaI 11-5 algicidal isolates showed obvious algicidal activity against cyanobacterial cells. The algicidal effect of Mail 1-5 exceeded 50% after two days, exceeded 70% after four days, and reached 80% after seven days. The observation results with a scanning electron microscope showed that the cyanobacterial cells aggregated and produced mucous-like substances when cocultivated with the algicidal bacteria. The results indicated that the Mail 1-5 bacterial strain may possess a novel function for controlling harmful blooms and further studies will provide new insights into its role in water environment.

关键词： algicidal bacteria Pedobacter sp. algicidal effect Microcystis aeruginosa

Long-term survival after resection of pancreatic cancer:A single-center retrospective analysis

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World Journal of Gastroenterology 2015年第1期21卷 262-268页

作者： Takehito Yamamoto Shintaro Yagi Hiromitsu kinoshita Yusuke Sakamoto Kazuyuki Okada Kenji Uryuhara takeshi Morimoto Satoshi Kaihara Ryo Hosotani Department of Surgery Kobe City Medical Center General HospitalHyogo 650-0047Japan Clinical Research Center Kobe City Medical Center General HospitalHyogo 650-0047JapanChief Statistician

AIM: To retrospectively analyze factors affecting the long-term survival of patients with pancreatic cancer who underwent pancreatic ***: From January 2000 to December 2011,195 patients underwent pancreatic resection in our *** prognostic factors after pancreatic resection were analyzed in all 195 *** excluding the censored cases within an observational period,the clinicopathological characteristics of 20 patients who survived ≥ 5(n = 20) and < 5(n = 76) years were *** this comparison,we analyzed the patients who underwent surgery before June 2008 and were observed for more than 5 *** statistical analyses,the log-rank test was used to compare the cumulative survival rates,and the χ2 and Mann-Whitney tests were used to compare the two *** CoxHazard model was used for a multivariate analysis,and P values less than 0.05 were considered significant.A multivariate analysis was conducted on the factors that were significant in the univariate ***: The median survival for all patients was 27.1 months,and the 5-year actuarial survival rate was 34.5%.The median observational period was 595 *** the univariate analysis,the UICC stage was significantly associated with survival time,and the CA19-9 ≤ 200 U/m L,DUPAN-2 ≤ 180 U/m L,t u m o r s i ze ≤ 2 0 m m,R 0 re s e c t i o n,a b s e n c e o f lymph node metastasis,absence of extrapancreatic neural invasion,and absence of portal invasion were favorable prognostic *** multivariate analysis showed that tumor size ≤ 20 mm(HR = 0.40; 95%CI: 0.17-0.83,P = 0.012) and negative surgical margins(R0 resection)(HR = 0.48; 95%CI: 0.30-0.77,P = 0.003) were independent favorable prognostic *** the 96 patients,20 patients survived for 5 years or more,and 76 patients died within 5 years after *** of the 20 5-year survivors with the 76 non-survivors showed that lower concentrations of DUPAN-2(79.5 vs 312.5 U/mL,P = 0.032),tumor size ≤ 20 mm(

关键词： Pancreatic cancer Long-term survival Longterm surv

Multifocal intraportal invasion of breast carcinoma diagnosed by laparoscopy-assisted liver biopsy

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World Journal of Gastroenterology 2005年第15期11卷 2360-2363页

作者： Tomoki Nakajima Satoru Sekoguchi Taichirou Nishikawa Hidetaka Takashima Tadashi Watanabe Masahito Minami Yoshito Itoh Naruhiko Mizuta Hiroo Nakajima takeshi Mazaki Akio Yanagisawa takeshi Okanoue Molecular Gastroenterology and Hepatology Endocrine Surgery Surgical Pathology

Hepar lobatum carcinomatosum (HLC) is defined as an acquired hepatic deformity consisting of an irregularly lobulated hepatic contour caused by intravascular infiltration of metastatic carcinoma. To date, only nine cases of HLC have been reported in the literature. We report a case of a 68-year-old woman showing hepatic metastasis of breast carcinoma in radiologically unidentified form. Initially, she received left partial mastectomy for breast cancer but solid hepatic metastases were identified in S2 and S6, 9 mo after surgery. Then, they responded to chemotherapy and radiologically disappeared. After radiological disappearance of the liver tumors, the patient's blood chemistry showed abnormal liver function. A CT scan demonstrated heterogeneous enhancement effect in the liver in the late phase,suggesting uneven hepatic blood supply. Hepatic deformity was not obvious. Laparoscopy revealed a slightly deformed liver surface with multiple indentations and shallow linear depressions. Furthermore, a wide scar was observed on the surface of S2 possibly at the site where the metastatic tumor existed before chemotherapy. Liver biopsy from the wide scar lesion showed intraportal tumor thrombi with desmoplastic change. Because of its similarity to the histology of the original breast cancer, we concluded that the hepatic functional abnormalities and slightly deformed liver surface were derived from the circulatory disturbance caused by microscopic tumor thrombi. Besides, since the wide scar was located at the site of the pre-existing tumor,it is probable that chemotherapy was an important cause of fibrous scarring as a result of tumor regression. These morphologic findings are compatible with those of ***-assisted liver biopsy was useful to make definite diagnosis, even though the hepatic deformity was radiologically undetectable.

关键词： Metastatic breast cancer Hepar lobatum carcinomatosum Laparoscopy

COMPOSITE NATURAL ORBITAL METHOD—A TEST ON BIPYRROLH

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原子与分子物理学报 1990年第4期7卷 1580-1584页

作者： Yuichi Yamamoto takeshi Noro Kimio Ohno Department of Chemistry Faculty of ScienceHokkaido UniversitySapporo060JapanDepartment of ChemistryFaculty of ScienceHokkaido UniversitySapporo060JapanDepartment of ChemistryFaculty of ScienceHokkaido UniversitySapporo060Japan

A scheme for construction of virtual orbitals for use in a configuration interaction(CI) method is described and is applied to the 2,2'-bipyrrole moecule.

关键词：量子化学自洽场分子轨道双吡咯