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Laparoscopic and endoscopic cooperative surgery for gastric tumors: Perspective for actual practice and oncological benefits

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World Journal of Gastrointestinal Oncology 2018年第11期10卷 381-397页

作者： yuki Aisu Daiki Yasukawa Yusuke Kimura Tomohide Hori Department of Digestive Surgery Tenri Hospital Department of Surgery Shiga University of Medical Science Department of Hepato-Biliary-Pancreatic Surgery and Transplantation Graduate School of Medicine Kyoto University Department of Surgery Shiga General Hospital

Laparoscopic and endoscopic cooperative surgery(LECS) is a surgical technique that combines laparoscopic partial gastrectomy and endoscopic submucosal dissection. LECS requires close collaboration between skilled laparoscopic surgeons and experienced endoscopists. For successful LECS, experience alone is not sufficient. Instead, familiarity with the characteristics of both laparoscopic surgery and endoscopic intervention is necessary to overcome various technical problems. LECS was developed mainly as a treatment for gastric submucosal tumors without epithelial lesions, including gastrointestinal stromal tumors(GISTs). Local gastric wall dissection without lymphadenectomy is adequate for the treatment of gastric GISTs. Compared with conventional simple wedge resection with a linear stapler, LECS can provide both optimal surgical margins and oncological benefit that result in functional preservation of the residual stomach. As technical characteristics, however, classic LECS involves intentional opening of the gastric wall, resulting in a risk of tumor dissemination with contamination by gastric juice. Therefore, several modified LECS techniques have been developed to av-oid even subtle tumor exposure. Furthermore, LECS for early gastric cancer has been attempted according tothe concept of sentinel lymph node dissection. LECS is a prospective treatment for GISTs and might become a future therapeutic option even for early gastric cancer. Interventional endoscopists and laparoscopic surgeons collaboratively explore curative resection. Simultaneous intraluminal approach with endoscopy allows surgeons to optimizes the resection area. LECS, not simple wedge resection, achieves minimally invasive treatment and allows for oncologically precise resection. We herein present detailed tips and pitfalls of LECS and discuss various technical considerations.

关键词： Minimally invasive surgery Laparoscopic and endoscopic cooperative surgery Facility-based Gastrointestinal stromal tumor Early gastric cancer

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Acquiring non-parametric scattering phase function from a single image

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Computational Visual Media 2018年第4期4卷 323-331页

作者： yuki Minetomo Hiroyuki Kubo Takuya Funatomi Mikio Shinya Yasuhiro Mukaigawa Nara Institute of Science and Technology 8916-5 Takayama-choIkomaNara630-0192Japan. Toho University 2-2-1 MiyamaFunabashiChiba274- 8510Japan. Dwango CG Research KADOKAWA Hongo Bldg.5-24-5 HongoBunkyo-kuTokyo113-0033Japan.

Acquiring accurate scattering properties is important for rendering translucent materials. In particular, the phase function, which determines the distribution of scattering directions, plays a significant role in the appearance of a material. We propose a distinctive scattering theory that approximates the effect of single scattering to acquire the non-parametric phase function from a single image. Furthermore, in various experiments, we measured the phase functions from several real diluted media and rendered images of these materials to evaluate the effectiveness of our theory.

关键词： scattering phase function measurement rendering

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On-line enrichment and determination of polycyclic aromatic hydrocarbons in atmospheric particulates using high performance liquid chromatography with fluorescence as detector

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Journal of Environmental Sciences 2007年第10期19卷 1261-1265页

作者： HASHI yuki WANG Tian-ran LI Yue-qi LIN Jin-ming State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beifing 100085 China Shimadzu （Shanghai） Limited Beijing Office Analytical Application Center Beifing 100020 China

Seven polycyclic aromatic hydrocarbons （PAHs） in atmospheric particulates were determinated by high performance liquid chromatography （HPLC） with fluorescence detector using direction injection and an on-line enrichment trap column. The method simplified the sample pretreatment, saved time and increased the efficiency. With the on-line trap column, PAHs were separated availably even underground injecting 1.0 ml sample with relatively high column efficiency. The recoveries of the seven PAHs were from 85% to 120% for spiked atmospheric particulate sample. The limit of detection was 15.3-39.6 ng/L （S/N=3.3）. There were good linear correlations between the peak areas and concentrations of the seven kinds of PAHs in the range of 1-50 ng/ml with the correlation coefficients over 0.9970. Furthermore, it also indicated that the method is available to determine PAHs in atmospheric particulates well.

关键词： on-line enrichment on-line trap column high performance liquid chromatography (HPLC) atmospheric particulate polycyclic aromatic hydrocarbons (PAHs)

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Improvement of sail storage and deployment mechanism for spin-type solar power sail

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Astrodynamics 2020年第3期4卷 223-231页

作者： Osamu Mori Nobukatsu Okuizumi Toshihiro Chujo yuki Takao Institute of Space and A stronautical Science Japan A erospace Exploration AgencySagamihara 252-5210Japan Department of Mechanical Engineering Tokyo Institute of TechnologyTokyo152-8550Japan Department of Aeronautics and Astronautics the University of TokyoTokyo 113-8654Japan

Deployable membrane structures are expected to be used for large area space structures,such as solar propulsion sails,magnetoplasma sails,drag-deorbiting sails,membrane antennas,and solar power *** are lightweight and can be compactly stored at *** achievement of the Japan Aerospace Exploration Agency(JAXA)was the successful deployment of a 200 m2 sail using centrifugal force in the IKAROS mission,which was the first solar propulsion sail-craft in *** has long been studying the technology of spin deployment of sail membranes,and is currently planning the spin deployment of a class sail larger than 2000 m2 as the next step in the development of the IK AROS *** paper discusses the unexpected behaviors during on-orbit sail deployment by IKAROS,as well as problems with the sail holding method,and proposes an improved sail storage structure and deployment mechanism for the OKEANOS mission.

关键词： solar sail solar power sail storage deployment IKAROS OKEANOS

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Sediment organic matter source estimation and ecological classification in the semi-enclosed Batan Bay Estuary, Philippines

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International Journal of Sediment Research 2021年第1期36卷 110-119页

作者： Yuya Ogawa yuki Okamoto Resurreccion Bitoon Sadaba Mamoru Kanzaki Graduate School of Agriculture Kyoto University 2. Graduate School of Global Environmental Studies Kyoto University Division of Biological Sciences University of the Philippines Visayas

The large organic matter flow in tropical coastal areas is recognized as an important process in the global carbon(C) ***,the nature of organic matter flow in semi-enclosed tropical estuaries remains unclear due to the various environmental processes(tidal change,river flow,waves from the sea,and internal circulation) and organic matter sources ***,sediment organic matter(SOM) sources,and their distribution pattern,are key to understanding ecosystem material *** research in the Batan Bay Estuary,Philippines,a semi-enclosed estuary under large mangrove deforestation,was conducted to determine ecosystem properties through analysis of C and nitrogen stable isotope ratios and environmental ***,we determined that mangrove litter,microphytobenthos,and phytoplankton are the main SOM sources in the Batan Bay ***,the estuary was classified into three ecological zones(the Bay zone,Back-barrier zone,and River zone).In addition,we estimated SOM source ratios using the Stable Isotope Analysis in R package and determined different organic matter sources in different *** high ratios of mangrove litter as SOM indicate that a large amount of terrestrial plant organic matter remains despite the heavy mangrove deforestation that has occurred since the 1980 s,and that the Back-barrier zone consists of a different type of ecosystem that promotes accumulation of C from mangrove litter and micro phytobenthos.

关键词： Mangrove Sediment organic matter Stable isotope Carbon Nitrogen SIAR

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Influence of Housing and Urban Development on Debris Flow Flooding and Deposition

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Journal of Mountain Science 2013年第2期10卷 273-280页

作者： Kana NAKATANI yuki OKUYAMA Yuji HASEGAWA Yoshifumi SATOFUKA Takahisa MIZUYAMA Graduate School of Agriculture Kyoto UniversityKitashirakawa Oiwake-choSakyo-kuKyoto City606-8502Japan National Institute for Land and Infrastructure Management AsahiTsukuba CityIbaraki305-0804Japan Civil Engineering Research Laboratory 904-1 TohigashiTsukuba CityIbaraki300-2633Japan Department of Civil Engineering Ritsumeikan University1-1-1 Noji-higashiKusatsu CityShiga525-8577Japan

Debris flows form deposits when they reach an alluvial fan until they eventually ***,houses located in the alluvial fan might affect the debris flow flooding and deposition *** previous studies have considered the effects of houses on debris flow flooding and *** study conducted model experiments and numerical simulations using the Kanako2D debris flow simulator to determine the influence of houses on debris flow flooding and *** model experiments showed that when houses are present,the debris flow spreads widely in the cross direction immediately upstream of the houses,especially when the flow discharge is large or the grain size is *** located in the alluvial fan also influence the deposition *** presence of houses led to flooding and deposition damage in some places and reduced the damage in *** simulation also demonstrated the influence of *** the model experiment and the simulation showed that houses change the flooding and deposition areas.

关键词： Debris flow Alluvial fan House Modelexperiment Numerical simulation

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Association between endotoxemia and histological features of nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2017年第4期23卷 712-722页

作者： Hiroyuki Kitabatake Naoki Tanaka Naoyuki Fujimori Michiharu Komatsu Ayaka Okubo Kyogo Kakegawa Takefumi Kimura Ayumi Sugiura Tomoo Yamazaki Soichiro shibata yuki Ichikawa Satoru Joshita Takeji Umemura Akihiro Matsumoto Masayoshi Koinuma Kenji Sano Toshifumi Aoyama Eiji Tanaka Department of Metabolic Regulation Shinshu University Graduate School of Medicine Department of Internal Medicine Division of GastroenterologyShinshu University School of Medicine Center for Clinical Research Shinshu University Hospital Faculity of Pharmaceutical Sciences Teikyo Heisei University Department of Laboratory Medicine Shinshu University Hospital

AIMTo assess whether surrogate biomarkers of endotoxemia were correlated with the histological features of nonalcoholic fatty liver disease (NAFLD).METHODSOne hundred twenty-six NAFLD patients who had undergone percutaneous liver biopsy were enrolled. Serum lipopolysaccharide (LPS)-binding protein (LBP) and anti-endotoxin core immunoglobulin G (EndoCab IgG) antibody concentrations at the time of liver biopsy were measured using the enzyme-linked immunosorbent assays to examine for relationships between biomarker levels and histological *** LBP concentration was significantly increased in nonalcoholic steatohepatitis (NASH) patients as compared with nonalcoholic fatty liver (NAFL) subjects and was correlated with steatosis (r = 0.38, P < 0.0001) and ballooning scores (r = 0.23, P = 0.01), but not with the severity of lobular inflammation or fibrosis. Multivariate linear regression analysis revealed that LBP was associated with steatosis score and circulating C-reactive protein, aspartate aminotransferase, and fibrinogen levels. Serum EndoCab IgG concentration was comparable between NASH and NAFL patients. No meaningful correlations were detected between EndoCab IgG and histological ***/EndoCab IgG were not correlated with lobular inflammation or fibrosis. More accurate LPS biomarkers are required to stringently assess the contribution of endotoxemia to conventional NASH.

关键词： Nonalcoholic steatohepatitis Endotoxemia Lipopolysaccharide-binding protein EndoCab IgG Fibrosis Steatosis

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Recording the direct surgeon’s view with an operating microscopic view improves microscopic ophthalmic surgery training

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International Journal of Ophthalmology(English edition) 2023年第9期16卷 1555-1558页

作者： Masayuki Akimoto Kosei Tomita Miyo Yoshida yuki Hama Ophthalmology Osaka Red Cross HospitalTennoji-kuOsaka 543-8555Japan

AIM:To establish a recording system with a direct view of the surgeon to supplement video recording under an operating microscope,which lacks information on the movement and position of the surgeon’s hands,and to facilitate the reproduction of a skilled surgeon’s technique by a surgeon in ***:A small camera was attached to the operating microscope with a custom *** surgeon’s view and direct surgeon’s view through this new camera were recorded in the surgical recording *** movies were synchronized and analyzed how do surgeons handle the ***:A small camera attached to the operating microscope allowed the surgeon’s hands motion to be recorded without interfering with the surgeon’s *** surgeons used different methods to manipulate the ultrasound handpiece and the irrigation/aspiration *** in the simple paracentesis procedure,different surgeons used different ***-in-training were able to identify and improve their weaknesses by watching synchronized movies of their hand motions and microscopic ***:Simultaneous recording the surgical field out of the operating microscopic view by a small camera set on the microscope is comprehensive and improves surgeons-in-training understanding and learning surgeries.

关键词： operating microscopic view direct surgeon’s view video recording microscopic surgery training

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A sustainable way of agricultural livelihood:edible bird’s nests in Indonesia

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Ecosystem Health and Sustainability 2021年第1期7卷 332-341页

作者： Yutaka Ito Ken’ichi Matsumoto Aswin Usup yuki Yamamoto Faculty of Regional Policy The University of ShimaneMatsueJapan Faculty of Economics Toyo UniversityTokyoJapan Faculty of Agriculture University of Palangka RayaPalangkarayaIndonesia Graduate School of Fisheries and Environmental Sciences Nagasaki UniversityNagasakiJapan

Edible birds’nests(EBNs)have traditionally been produced in Southeast *** farmers construct buildings for swiftlets and harvest their *** farming does not directly degrade forest resources and is therefore considered a sustainable means of production,whereas the expansion of other agricultural activities often relies on the degradation of natural *** study examines the relationship between natural resources and agricultural livelihoods,focusing on Indonesian EBN *** survey data that we collected in 2017,combined with satellite information on the extent of the forest in Central Kalimantan,Indonesia,we measured production efficiency and identified the natural and social factors that enhance production *** results show that a forest extent ranging between 2,000 and 6,000 meters from nesting building is positively associated with the production efficiency of EBN farming,perhaps because extensive forest could help swiftlets to collect food and build ***,while EBN farming is a sustainable and profitable option,the initial costs of constructing buildings to house swiftlets may deter farmers from participating in the process.

关键词： Edible bird’s nest swiftlet Indonesia forest natural habitat ecosystem services satellite data

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Analysis of keto-enol tautomers of curcumin by liquid chromatography/mass spectrometry

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Chinese Chemical Letters 2013年第8期24卷 685-687页

作者： Shin-ichi Kawano Yusuke Inohana yuki Hashi Jin-Ming Lin Department of Chemistry Beijing Key Laboratory of Microanalytical Methods and InstrumentationTsinghua University Shimadzu Global COE for Application & Technical Development Shimadzu(China) Co.Ltd. Global Application Development Center Shimadzu Corporation Department of Chemistry Beijing Key Laboratory of Microanalytical Methods and Instrumentation.Tsinghua University

Keto-enol tautomers of curcumin were confirmed by reversed-phase liquid chromatography（RPLC）/ hybrid quadrupole ion trap/time-of-flight mass spectrometry（QIT/TOFMS）.Tautomers gave different MS/MS spectra in negative *** mass spectra were also obtained by hydrogen/deuterium exchange LC/MS/MS in positive *** results suggest that enol form is the major form in the solution（water/acetonitrile）.

关键词： Keto-enol tautomer Curcumin Liquid chromatography/mass spectrometry

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