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High resolution deep imaging of a bright radio quiet QSO at z～3

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Research in Astronomy and Astrophysics 2015年第5期15卷 673-686页

作者： Yi-Ping Wang Wei He Toru yamada Ichi Tanaka Masanori Iye Tuo Ji Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Tohoku University Aramaki Aoba Sendai 980-8578 Japan Subaru telescope National Astronomical Obs. of Japan 650 North A’ohoku Place Hilo Hawaii 96720 USA National Astronomical Obs. of Japan 2-21-1 Osawa Mitaka Tokyo 181-8588 Japan Polar Research Institute of China

We have obtained deep J and Ks-band images centered on a bright radio quiet QSO UM 402 （Zem = 2.856） using the IRCS camera and adaptive optics systems that are part of the Subaru Telescope, as well as retrieved WFC3/F140W archive images of this object. A faint galaxy （ink = 23.32 ±0.05 in the Vega magnitude system） that lies ～2.4″north of the QSO sightline has been clearly resolved in all three deep high resolution datasets, and appears as an irregular galaxy with two close components in the Ks-band images （separation ～ 0.31″）. Given the small impact parameter （b = 19.6 kpc, at Zlls = 2.531）, as well as the red color of （J - Ks）vega ～1.6, it might be a candidate galaxy giving rise to the Lyman Limit system absorption at Zabs = 2.531 seen in the QSO spectrum. After carefully subtracting the point spread function from the QSO images, the host galaxy of this bright radio quiet QSO at z ～ 3 was marginally revealed. We placed a lower limit on the host component of mk～ 23.3 according to our analyses.

关键词： galaxies active -- galaxies high redshift -- quasars general -- instru- mentation adaptive optics

Inverted Meckel's diverticulum as a cause of occult lower gastrointestinal hemorrhage

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World Journal of Gastroenterology 2012年第42期18卷 6155-6159页

作者： Omar M Rashid Joseph K Ku Masayuki Nagahashi Akimitsu yamada Kazuaki Takabe Department of Surgery Virginia Commonwealth UniversityRichmondVA 23220United States Precision Plastic Surgery RiversideCA 92506United States

Meckel's diverticulum is a common asymptomatic congenital gastrointestinal anomaly,but rarely it can present with *** the last few years inverted Meckel's diverticulum has been reported in the literature with increasing frequency as an occult source of lower gastrointestinal ***,we report a case of a 54-year-old male,who was referred for surgical evaluation with persistent anemia and occult blood per rectum after a work up which failed to localize the source over 12 mo,including upper and capsule endoscopy,colonoscopy,enteroclysis,Meckel scan,and tagged nuclear red blood cell *** abdominal computed tomography scan showed a possible mid-ileal intussusception and intraluminal *** the abdominal exploration,inverted Meckel's diverticulum was diagnosed and *** review the literature,discuss the forms in which the disease presents,the diagnostic modalities utilized,pathological findings,and *** less than 40 cases have been reported in the English literature from 1978 to 2005,19 cases have been reported in the last 6 years alone(2006-2012) due to improved diagnostic *** diagnosis and treatment of this disease requires a high index of clinical suspicion,which is becoming increasingly relevant to general gastroenterologists.

关键词： Inverted Meckel's diverticulum Gastrointestinal hemorrhage Lower gastrointestinal bleeding Intussusceptions

Low-grade myofibroblastic sarcoma of the palate

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International Journal of Oral Science 2012年第3期4卷 170-173页

作者： Tomohiro yamada Tomohide Yoshimura Naoya Kitamura Eri Sasabe Seiji Ohno Tetsuya Yamamoto Department of Oral and Maxillofacial Surgery Kochi Medical SchoolKochi University

Low-grade myofibroblastic sarcoma （LGMS） is a rare, malignant tumor with myofibroblastic differentiation. Despite it being classified as a distinct entity by the World Health Organization, a few cases were reported in the oral and maxillofacial region. Here, a LGMS developed on the palate of a 73-year-old man who presented with a 1-cm tumor on the posterior border of the palate. Based on the histological and immunohistochemical features, a diagnosis of LGMS was established. The tumor was resected, and no recurrence was observed over 2 years. Although the tongue is the most preferred site for LGMS, it may occur in any region of the oral cavity.

关键词： low-grade myofibroblastic sarcoma oral palate

Outer space grown semi-insulating GaAs and its applications

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Science China(Technological Sciences) 1999年第5期42卷 456-461页

作者：林兰英张绵钟兴儒陈诺夫 Masayoshi yamada Laboratory of Semiconductor Materials Science Institute of Semiconductors Chinese Academy of Sciences Hebei Institute of Semiconductors Department of Electronics & Information Science Kyoto Institute of Technology

GaAs single crystal has been grown in recoverable satellite. Hall measurements indicate that the GaAs shows semi-insulating behavior. The structural properties of the crystal have been improved obviously, and their uniformity has been improved as well. The stoichiometry and its distribution in space-grown GaAs are improved greatly compared with the GaAs single crystal gmwn terrestrially. The properties of integrated circuits made by direct ion-implantation on space-grown GaAs are better than ihose made on gmund-gnmm materials. These results show that the stoichiometry in semi-insulating GaAs seriously affects the properties of related devices.

关键词： GaAs outer-space microgravity integrated-circuit.

Investigation of the microbiota associated with traditionally produced fruit vinegars with focus on acetic acid bacteria and lactic acid bacteria

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Food Bioscience 2022年第3期47卷 307-315页

作者： Ilkin Yucel Sengun Gulden Kilic Piyanat Charoenyingcharoen Pattaraporn Yukphan Yuzo yamada Ege University Engineering FacultyFood Engineering Department35100BornovaIzmirTurkey National Center for Genetic Engineering and Biotechnology (BIOTEC) National Science and Technology Development Agency (NSTDA)Khlong LuangPathum Thani12120Thailand Laboratory of Applied Microbiology (Professor Emeritus) Department of Applied Biological ChemistryFaculty of AgricultureShizuoka UniversitySuruga-kuShizuoka422-8529Japan Japan International Cooperation Agency (JICA Senior Overseas Volunteer) Shibuya-kuTokyo151-8558Japan

The microbiological properties of traditionally produced fruit vinegars,i.e.,fig,mulberry,apple and plum vinegars,supplied from different cities in Turkey were *** counts of acetic acid bacteria(AAB),lactic acid bacteria(LAB)and mold-yeast for fruit vinegars were found in the range of 2.54–7.05,1.91–6.81 and 1.32–7.10 log CFU/mL,*** indigenous AAB and LAB isolates were recovered from the vinegars and characterized based on a combination of phenotypic and genotypic approaches including 16S rRNA gene *** AAB three different species,Acetobacter pasteurianus,*** and ***,and in LAB five species,Lacticaseibacillus paracasei,Lactiplantibacillus plantarum,Levilactobacillus brevis,Leuconostoc *** Weisella confusa were identified in the vinegar *** was the first study reporting the identification of *** and Leuconostoc sp.,which were isolated from fig *** results of the study showed that *** and *** were predominant species found in vinegar *** study provides potential strains which may be used as starter cultures in food industry.

关键词： Microbial characterization Acetic acid bacteria Fig Mulberry Plum Fruit vinegar

Data-Driven Determinant-Based Greedy Under/Oversampling Vector Sensor Placement

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Computer Modeling in Engineering & Sciences 2021年第10期129卷 1-30页

作者： Yuji Saito Keigo yamada Naoki Kanda Kumi Nakai Takayuki Nagata Taku Nonomura Keisuke Asai Tohoku University SendaiMiyagi980-8579Japan

A vector-measurement-sensor-selection problem in the undersampled and oversampled cases is considered by extending the previous novel approaches:a greedy method based on D-optimality and a noise-robust greedy method in this *** of the vector-measurement-sensor selection of the greedy algorithms are proposed and applied to randomly generated systems and practical datasets of flowfields around the airfoil and global climates to reconstruct the full state given by the vector-sensor measurement.

关键词： Sparse sensor selection vector-sensor measurement

Recent traction methods for endoscopic submucosal dissection

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World Journal of Gastroenterology 2016年第26期22卷 5917-5926页

作者： Kunihiro Tsuji Naohiro Yoshida Hiroyoshi Nakanishi Kenichi Takemura Shinya yamada Hisashi Doyama Department of Gastroenterology Ishikawa Prefectural Central Hospital

Endoscopic mucosal resection(EMR) is problematic with regard to en bloc and curable resection *** in endoscopic techniques have enabled novel endoscopic approaches such as endoscopic submucosal dissection(ESD), which has overcome some EMR problems, and has become the standard treatment for gastrointestinal tumors. However, ESD is technically difficult. Procedure time is longer and complications such as intraoperative perforation and bleeding occur more frequently than in EMR. Recently various traction methods have been introduced to facilitate ESD procedures, such as clip with line, external forceps, clip and snare, internal traction, double scope, and magnetic anchor. Each method must be used appropriately according to the anatomical characteristics. In this review we discuss recently proposed traction methods for ESD based on the characteristics of various anatomical sites.

关键词： Endoscopic submucosal dissection Traction Pharyngeal cancer Esophageal cancer Gastric cancer Colorectal cancer

Clinical management for malignant afferent loop obstruction

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World Journal of Gastrointestinal Oncology 2021年第7期13卷 684-692页

作者： Arata Sakai Hideyuki Shiomi Atsuhiro Masuda Takashi Kobayashi Yasutaka yamada Yuzo Kodama Division of Gastroenterology Department of Internal MedicineKobe University Graduate School of MedicineKobe 650-0017HyogoJapan

Afferent loop obstruction(ALO)is defined as duodenal or jejunal mechanical obstruction at the proximal anastomosis site of a *** advances in chemotherapy,the incidence of malignant ALO is *** ALO can be complicated by ischemia,gangrenous bowel,pancreatitis,and ascending ***,the general condition of patients with recurrent cancer is often ***,accurate and rapid diagnosis and minimally invasive treatments are ***,no review articles on the diagnosis and treatment of malignant ALO have been *** literature searching,we reviewed related articles published between 1959 and 2020 in the PubMed ***,we present recent advances in the diagnosis and treatment of malignant ALO and describe future *** transluminal self-expandable metal stent(SEMS)placement is considered the standard treatment for malignant ALO,as this procedure is well established and less ***,with the development of interventional endoscopic ultrasound(EUS)in recent years,the usefulness of EUS-guided gastrojejunostomy has been ***,through indirect comparison,this approach has been reported to be superior to transluminal SEMS *** is expected that a safer and less invasive treatment method will be established through the continued advancement and innovation of interventional endoscopy techniques.

关键词： Malignant afferent loop obstruction Endoscopic self-expandable metal stent placement Endoscopic ultrasound guided gastrojejunostomy Lumen-apposing metal stent

A Series of Soluble Planar Oligorylenes up to Hexarylene

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Chinese Journal of Chemistry 2023年第9期41卷 1023-1027页

作者： Ryuichi Fujita Shoko Yoshida Haruka Kano Kyohei Matsuo Hironobu Hayashi Hiroko yamada Naoki Aratani Division of Materials Science Nara Institute of Science and Technology(NAIST)8916-5 Takayama-choIkoma 630-0192Japan

Preparation of large rylenes often needs the use of solubilizing groups along the rylene backbone,which results in the distortion of the skeleton and thus broadening of the absorption *** this work,we successfully synthesized 2,5,8,16,19,22-hexakis[2,6-bis(tri-fluoromethyl)phenyl]hexarylene(H)by using an oxidative fusion reaction of perylene trimer in 5%*** product is soluble in common organic solvents and could be purified with column ***-crystal X-ray diffraction analysis revealed that the hexarylene core is not disturbed by the substituents very much and is almost *** longest absorption of H exhibits a sharp peak at 831 nm and an on-set at 875 nm in toluene with a small full-width-at-half-maximum(FWHM)of 660 cm^(-1).The molar extinction coefficient is as large as 131,000 M^(-1)cm^(-1).The substituents could not perturb the electronic properties of the hexarylene because aryl groups are perpendicular to the hexarylene core and the carbon atoms at 2,5,16,19-positions have negligible coeffi-cients on its HOMO and LUMO,estimated by theoretical *** a result,the hexarylene having less absorption at the visible light region was stable enough in solution under the LED room light for more than 1 *** strategy gives a useful guideline to establish the near-infrared materials that exhibit stability under ambient conditions.

关键词： Oligorylenes Undistorted skeleton Near infrared absorption Crystal structure Effective conjugation length