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Efficient rendering of breaking waves using MPS method

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第6期7卷 1018-1025页

作者： WANG Qiang ZHENG Yao CHEN Chun fujimoto Tadahiro CHIBA Norishige School of Computer Science Zhejiang University Hangzhou 310027 China Department of Computer Science Faculty of Engineering lwate University Morioka 020-08550 Japan

This paper proposes an approach for rendering breaking waves out of large-scale of particle-based simulation. Moving particle semi-implicit (MPS) is used to solve the governing equation, and 2D simulation is expanded to 3D representation by giving motion variation using fractional Brownian motion (fBm). The waterbody surface is reconstructed from the outlines of 2D simulation. The splashing effect is computed according to the properties of the particles. Realistic features of the wave are ren-dered on GPU, including the reflective and refractive effect and the effect of splash. Experiments showed that the proposed method can simulate large scale breaking waves efficiently.

关键词： Moving particle semi-implicit (MPS) Particle-system Surface reconstruction

Luminescence properties of Gd2Si2O7：Ce and Gd2Si2O7：La,Ce under vacuum ultraviolet irradiation

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Journal of Rare Earths 2016年第8期34卷 782-785页

作者： M.Koshimizu T.Yanagida Y.fujimoto K.Asai Department of Applied Chemistry Graduate School of Engineering Tohoku University 6-6-07 Aoba Aramaof Aoba-ku Sendai 980-8579 Japan Graduate School of Materials Science Nara Institute of Science and Technology 8916-5 Takayama-Cho Ikoma Nara 630-0192 Japan

The luminescence properties of Ce- or Ce and La-doped gadolinium pyrosilicate （Gd2Si2OT, GPS） were characterized using vacuum ultraviolet （VUV） excitation light. A prominent emission band was observed in the luminescence spectra with excitation at 60 nm and ascribed to 5d-4f transition of Ce3＋. Because the excitation wavelength of 60 nm corresponded to the excitation in the host matrix, this result indicated that the excitation energy transfer occurred from the host matrix to Ce3＋ ions. On the basis of the rise in the luminescence time profiles with excitation at 60 nm, the energy transfer occurred within 2 ns, which was much shorter than that of Ce-doped Gd2SiO2. For Ce-doped GPS, the decay rate was slower for the host excitation than that for direct excitation of Ce3＋. In contrast, for Ce and La-doped GPS, no significant difference was observed for the host excitation and direct excitation of Ce3＋. This result indicated that the energy transfer from the host to Ce3＋ ions led to a different radiative decay process, and that La doping had an effect on the energy transfer and decay process.

关键词： energy transfer scintillation vacuum ultraviolet rare earths

Performance of Low-Dissipation Euler Fluxes and Preconditioned LU-SGS at Low Speeds

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Communications in Computational Physics 2011年第6期10卷 90-119页

作者： Keiichi Kitamura Eiji Shima Keiichiro fujimoto Z.J.Wang JAXA’s Engineering Digital Innovation(JEDI)Center Japan Aerospace Exploration Agency3-1-1 YoshinodaiChuuouSagamiharaKanagawa252-5210Japan JAXA’s Engineering Digital Innovation(JEDI)Center Japan Aerospace Exploration Agency2-1-1 SengenTsukubaIbaraki305-8505Japan Department of Aerospace Engineering Iowa State University2271 Howe HallAmesIA 50011USA.

In low speed flow computations,compressible finite-volume solvers are known to a)fail to converge in acceptable time and b)reach unphysical *** problems are known to be cured by A)preconditioning on the time-derivative term,and B)control of numerical dissipation,*** have been several methods of A)and B)proposed ***,it is unclear which combination is the most accurate,robust,and efficient for low speed *** carried out a comparative study of several well-known or recently-developed low-dissipation Euler fluxes coupled with a preconditioned LU-SGS(Lower-Upper Symmetric Gauss-Seidel)implicit time integration scheme to compute steady *** a series of numerical experiments,accurate,efficient,and robust methods are suggested for low speed flow computations.

关键词： All-speed scheme low-dissipation preconditioning LU-SGS

Comparison of the effects of retrieval balloons and basket catheters for bile duct stone removal on the rate of post-ERCP pancreatitis

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Hepatobiliary & Pancreatic Diseases International 2021年第2期20卷 203-204页

作者： Kotaro Takeshita Satoshi Asai Naoki fujimoto Takumi Ichinona Eisuke Akamine Department of Gastroenterology Tane General HospitalOsaka 550-0025Japan

To the Editor:Endoscopic retrograde cholangiopancreatography(ERCP)is one of the most important techniques for diagnosis and treatment in pancreatobiliary ***-ERCP pancreatitis(PEP)is a common complication of ERCP with incidence about 3.8%–15.1%[1–4].The precutting technique,contrast injection into the pancreatic duct,prolonged cannulation and procedure times,sphincterotomy.

关键词： diagnosis ERCP injection

Efficacy and Safety of the Atrial Septal Defect Closure for Patients with Absent or Malaligned Aortic Rim Using a Figulla Flex II Device Flared and Straddling Behind the Aorta

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Congenital Heart Disease 2021年第3期16卷 269-283页

作者： Masataka Kitano Kazuto fujimoto Atsuko Kato Ken-ichi Kurosaki Isao Shiraishi Department of Pediatric Cardiology National Cerebral and Cardiovascular CenterOsakaJapan Department of Pediatric Cardiology Okinawa Prefectural Nanbu Medical Center&Children’s Medical CenterOkinawa PrefectureJapan

Background:Although transcatheter closure of atrial septal defect(ASD)is safe and effective for patients with sufficient rim,ASD patients with absent and/or malaligned aortic and/or superior rim have higher risks of device embolization and cardiac *** have treated such high-risk patients using a Figulla Flex II(FFII)device shaped flared and straddling behind the aorta because this method would avoid such serious ***,its long-term efficacy and safety remain ***,the midterm efficacy and safety of this method were ***:We retrospectively evaluated the outcome of 47 consecutive patients with such rim(age 6–73 years,weight 17–75 kg,31 females)treated with this method at our hospital between February 2016 and September *** make the flared and straddling shape,we selected a FFII 4–6 mm larger than the balloon sizing diameter by stop-flow *** also studied the device shape,the disc pressure to the Valsalva wall and their changes over 6 months by transesophageal ***:All procedures were successful,and leakage disappeared within 1 *** a mean follow up of 37±12 months,complications included a transient sinus node dysfunction and one I°atrioventricular block within 3 *** device shape changed from bulky to thin:the device waist and thickness significantly decreased by around 1.5 mm and 3.5 mm,respectively(p<0.05),but the two discs remained flared and straddling behind the aorta over 6 months;therefore,the disc edges seldom pressed the Valsalva wall perpendicularly,even though the inner plane of either disc often slightly pressed the ***:ASD closure using a FFII shaped flared and straddling behind the aorta is probably effective and safe for patients with absent and/or malaligned aortic and/or superior rim although requiring care for conduction disorders.

关键词： Atrial septal defect catheter intervention device embolization cardiac erosion conduction disorder

Campylobacter jejuni enterocolitis presenting with testicular pain: A case report

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World Journal of Clinical Cases 2020年第15期8卷 3280-3283页

作者： Masahiro Sanagawa Tsuneaki Kenzaka Sayaka Kato Ichiko Yamaoka Shouichi fujimoto Department of Internal Medicine Miyazaki Seikyo HospitalMiyazaki 880-0824Japan Department of Internal Medicine Hyogo Prefectural Tamba Medical CenterHyogo 669-3495Japan Division of Community Medicine and Career Development Kobe University Graduate School of MedicineHyogo 652-0032Japan Department of General Surgery Miyazaki Seikyo HospitalMiyazaki 880-0824Japan Department of Hemovascular Medicine and Artificial Organs Faculty of MedicineUniversity of MiyazakiMiyazaki 889-1692Japan

BACKGROUND Common symptoms of Campylobacter colitis include abdominal pain,vomiting,diarrhea,and fever,among ***,Campylobacter colitis also has a high incidence of extraintestinal *** SUMMARY We report the case of a 51-year-old man who presented with bilateral testicular pain.A scrotal examination failed to reveal any physical findings,but the patient exhibited mild tenderness in the right lower *** tomography revealed ileocecal wall ***-admission,the patient developed diarrhea,and a stool culture was submitted;Campylobacter jejuni infection was *** pain is known to be caused by ***,we suggest that Campylobacter colitis,which causes ileocecal inflammation,caused the testicular pain in this *** In patients with testicular pain and no other objective findings,diseases such as Campylobacter colitis should be considered.

关键词： Campylobacter Colitis Testicular pain Ileocecal inflammation Related pain Case report

在超临界正己烷介质中的F-T合成反应行为(英文)

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燃料化学学报 2005年第5期33卷 520-524页

作者： Kenji Asami Kaoru fujimoto Department of Chemical Process and Environments Faculty of International Engineering Kitakyushu University 1-1 Hibikino Wakamatsu-ku Kitakyushu City 808-0135 JapanDepartment of Chemical Process and Environments Faculty of International Engineering Kitakyushu University 1-1 Hibikino Wakamatsu-ku Kitakyushu City 808-0135 Japan

在固定床反应器中,以正己烷为超临界介质,研究了三种Co催化剂(浸渍、喷雾干燥、双模催化剂)上的F-T合成反应行为.在相同的Co质量分数下,喷雾干燥催化剂和双模催化剂的活性接近,都高于浸渍催化剂.在喷雾干燥催化剂上CO的转化率显著高于... 详细信息

在固定床反应器中,以正己烷为超临界介质,研究了三种Co催化剂(浸渍、喷雾干燥、双模催化剂)上的F-T合成反应行为.在相同的Co质量分数下,喷雾干燥催化剂和双模催化剂的活性接近,都高于浸渍催化剂.在喷雾干燥催化剂上CO的转化率显著高于浸渍催化剂.喷雾干燥催化剂F-T产物中具有高的低碳选择性和低的1-烯烃质量分数,然而在相近的CO转化率下,喷雾干燥和浸渍催化剂具有类似的1-烯烃质量分数.对于浸渍催化剂,当Co质量分数从5%增加到15%,CO转化率从8.3%增加到43.6%.含Co5%的催化剂比质量分数为10%、15%、20%催化剂的甲烷选择性低2.0%～3.0%,但产物中1-烯烃的质量分数明显要高.

关键词： F—T合成超临界相正己烷钴催化剂

Immunotherapy for nonalcoholic steatohepatitis using the multiple cytokine production modulator Y-40138

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World Journal of Gastroenterology 2009年第44期15卷 5533-5540页

作者： Tatsuhiro Tsujimoto Hideto Kawaratani Toshiyuki Kitazawa Hitoshi Yoshiji Masao fujimoto Masahito Uemura Hiroshi Fukui Third Department of Internal Medicine Nara Medical University840 Shijo-choKashiharaNara 634-8522Japan

AIM:To investigate the possible use of the multiple cytokine production modulator,Y-40138,as a novel immunotherapy in the rat nonalcoholic steatohepatitis (NASH) model. METHODS:We allocated 6-wk-old male F344 rats to choline-supplemented,L-amino acid-defined (CSAA) diet (control group),CSAA diet + Y-40138 (control + Y-40138 group),choline-def icient,L-amino acid-def ined (CDAA) diet (NASH group),or CDAA diet + Y-40138 (NASH + Y-40138 group). In each group,we measured the plasma alanine aminotransferase (ALT) levels,and the plasma and liver levels of tumor necrosis factor-α (TNF-α),interferon-γ (IFN-γ),and interleukin-10 (IL-10). Tissue specimens of phosphate buffered saline-perfused liver were subjected to hematoxylin and eosin staining,Azan staining,Sirius red staining,and immunohistochemical staining (for Kupffer cells and TNF-α). We then extracted Kupffer cells from the collagenase-perfused livers using the Percoll gradient centrifugation method,and measured the TNF-α levels in the supernatant (in vitro TNF-α production by Kupffer cells) using an enzyme-linked immunosorbent assay ***:In comparison to the NASH group,serumALT elevation was mild,production of serum and liver TNF-α and IFN-γ was inhibited,and IL-10 production was increased in the NASH + Y-40138 group. Amelioration of liver histology was also noted in the NASH + Y-40138 group. Kupffer cell immunohistochemical staining revealed no differences between groups,whereas TNF-α immunohistochemical staining showed fewer stained cells in the NASH + Y-40138 group than in the NASH group. The TNF-α levels in the in-vitro Kupffer cell culture supernatant were lower in the NASH + Y-40138 group than in the NASH ***:Administration of Y-40138 to NASH model rats reduced hepatic inflammation and suppressed fibrosis. These results indicate that the multiple cytokine production modulator,Y-40138,is promising as a novel treatment for NASH.

关键词： Nonalcoholic steatohepatitis Y-40138 Tumor necrosis factor α Interferon γ Interleukin-10 Kupffer cell Innate immunity

Safety of rectal indomethacin(100 mg)for the prevention of post-ERCP pancreatitis in the Japanese population:A single-center prospective pilot study

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Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 406-408页

作者： Kotaro Takeshita Satoshi Asai Naoki fujimoto Takumi Ichinona Eisuke Akamine Mamoru Takenaka Department of Gastroenterology Tane General HospitalOsaka 550-0025Japan Department of Gastroenterology and Hepatology Kindai University Faculty of MedicineOsaka-Sayama 589-8511Japan

To the Editor:Endoscopic retrograde cholangiopancreatography(ERCP)causes adverse events;post-ERCP pancreatitis(PEP)is one of the frequent adverse ***,the efficacy of rectal administration of non-steroidal anti-inflamm... 详细信息

关键词： prevention ERCP drugs