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Cecal volvulus:Report of a case and review of Japanese literature

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World Journal of Gastroenterology 2009年第20期15卷 2547-2549页

作者： Toshio Katoh Tsunehiko Shigemori ryo fukaya Hiroshi Suzuki Division of Surgery Toyama Hospital Tsu-City 514-0043 Japan

A 78-year-old woman presented with fever, severe abdominal pain, and *** had been institutionalized for depression and senile *** examinations disclosed a leucocytosis(WBC:12 500/μL) and elevated levels of serum C-reactive protein(2.8 mEq/L).Diagnosis of acute cecal volvulus was made from a"coffee bean sign"on an abdominal computed tomography and a"beak sign"on a gastrographin *** emergent laparotomy confirmed the diagnosis and an ileo-colectomy with primary anastomosis was carried *** patient recovered after intensive respiratory care and fluid therapy, and then returned to her former institution.A review of Japanese literature disclosed that:(1) a marked increase of aged patients with mental disability presenting with cecal volvulus,(2) adoption of ileo-colectomy as the standard surgical procedure, and(3) improved survival of the patients, were observed in the last decade.

关键词： Cecal volvulus Ileo-colectomy Mental disability

Three-dimensional crystal defect imaging by STEM depth sectioning

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Chinese Physics B 2024年第8期33卷 2-7页

作者： ryo Ishikawa Naoya Shibata Yuichi Ikuhara Institute of Engineering Innovation The University of TokyoBunkyoTokyo 113-8656Japan

One of the major innovations awaiting in electron microscopy is full three-dimensional imaging at atomic *** the success of aberration correction to deep sub-angstrom lateral resolution,spatial resolution in depth is still far from atomic *** scanning transmission electron microscopy(STEM),this poor depth resolution is due to the limitation of the illumination *** overcome this physical limitation,it is essential to implement a next-generation aberration corrector in STEM that can significantly improve the depth *** review discusses the capability of depth sectioning for three-dimensional imaging combined with large-angle illumination ***,the statistical analysis approach remarkably improves the depth resolution,making it possible to achieve three-dimensional atomic resolution imaging at oxide *** will also discuss the future prospects of three-dimensional imaging at atomic resolution by STEM depth sectioning.

关键词： atomic-resolution STEM STEM depth sectioning depth resolution dopants surface topography

Fabrication of Mie-resonant silicon nanoparticles using laser annealing for surface-enhanced fluorescence spectroscopy

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Microsystems & Nanoengineering 2024年第2期10卷 133-141页

作者： Tatsuya Fukuta ryo Kato Takuo Tanaka Taka-aki Yano Institute of Post-LED Photonics Tokushima University2-1 Minami-JosanjimaTokushima770-8506Japan Innovative Photon Manipulation Research Team RIKEN Center for Advanced PhotonicsWakoSaitama351-0198Japan Metamaterials Laboratory RIKEN Cluster for Pioneering ResearchWakoSaitama351-0109Japan

Silicon nanostructures with unique Mie resonances have garnered considerable attention in the field of ***,we present a simple and efficient method for the fabrication of silicon(Si)nanoparticle substrates using continuous-wave(CW)laser *** resulting silicon nanoparticles exhibit Mie resonances in the visible region,and their resonant wavelengths can be precisely ***,laser-annealed silicon nanoparticle substrates show a 60-fold enhancement in *** tunable and fluorescence-enhancing silicon nanoparticle platform has tremendous potential for highly sensitive fluorescence sensing and biomedical imaging applications.

关键词： nanoparticles annealing resonant

α,β-Dehydroamino Acid Synthesis through Proline-Catalyzed Aldol Condensation with a Glycine Schiff Base

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Precision Chemistry 2024年第1期2卷 14-20页

作者： Jun Sawamura Daikan Ieiri ryo Yazaki Takashi Ohshima Graduate School of Pharmaceutical Sciences Kyushu UniversityFukuoka 812-8582Japan

A general protocol for the synthesis ofα,β-dehydroamino acids and their peptides was *** efficiently catalyzed an aldol condensation reaction of a glycine Schiff base with a variety of *** hydroxy group on the benzophenone imine was crucial for high Z/E selectivity and further transimination for protecting group-freeα,β-dehydroamino *** elongation of both the C-and N-terminals highlighted the usefulness of our present protocol.

关键词： α β-dehydroamino acid peptide proline aldol condensation glycine Schiff base transimination

Swimmer with submerged SiO_(2)/Al/LiNbO_(3) surface acoustic wave propulsion system

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Biomimetic Intelligence & Robotics 2024年第2期4卷 71-77页

作者： Deqing Kong ryo Tanimura Fang Wang Kailiang Zhang Minoru Kuribayashi Kurosawa Manabu Aoyagi Department of Engineering Muroran Institute of TechnologyMuroran 050-8585Japan Tianjin Key Laboratory of Film Electronic and Communication Devices School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China School of Engineering Tokyo Institute of TechnologyYokohama 226-8501Japan

Acoustic propulsion system presents a novel underwater propulsion approach in small scale *** study introduces a submerged surface acoustic wave(SAW)propulsion system based on the SiO_(2)/Al/LiNbO_(3) *** 19.25 MHz,the SAW propulsion system is proposed and investigated by the propulsion force calculation,PIV measurements and propulsion measurements.3.3 mN propulsion force is measured at 27.6 V_(pp).To evaluate the miniature swimmer,the SAW propulsion systems with multiple frequencies are *** 2.2 W,the submerged SAW propulsion system at 38.45 MHz demonstrates 0.83 mN/mm^(2) propulsion *** 96.13 MHz and 24 V_(pp),the movements of miniature swimmer with a fully submerged SAW propulsion system are recorded and analyzed to a maximum of 177 mm/*** of miniaturization,high power density,and simple structure,the SAW propulsion system can be expected for some microrobot applications,such as underwater drone,pipelinerobotand intravascularrobot.

关键词： Acoustofluidics Surface acoustic wave Swimmer Underwater propulsion system

Operationally Simple Enantioselective Silane Reduction of Ketones by the [Ir(OMe)(cod)]₂/Azolium Catalytic System

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International Journal of Organic Chemistry 2024年第1期14卷 1-19页

作者： Satoshi Sakaguchi Chika Nagao ryo Ichihara Shogo Matsuo Department of Chemistry and Materials Engineering Faculty of Chemistry Materials and Bioengineering Kansai University Suita Japan

An operationally simple protocol was designed for the enantioselective silane reduction (ESR) of ketones using air- and moisture-stable [Ir(OMe)(cod)]2 (cod = 1,5-cyclooctadiene) (3) as a metal catalyst precursor. This reaction was driven by chiral hydroxyamide-functionalized azolium salt 2. The catalytic ESR reaction could be performed under benchtop conditions at room temperature. Treatment of 2 with 3 in THF yielded the monodentate IrCl(NHC)(cod) (NHC = N-heterocyclic carbene) complex 4 in 93% yield, herein the anionic methoxy ligand of 3 serves as an internal base that deprotonates the azolium ring of 2. The well-defined Ir complex 4 catalyzed the ESR reaction of propiophenone (6) with (EtO)2MeSiH using the pre-mixing reaction procedure. Based on this success, the catalytic ESR reaction was designed and implemented using an in situ-generated NHC/Ir catalyst derived from 2 and 3. Thus, a wide variety of aryl ketones could be reduced to the corresponding optically active alcohols in moderate to excellent stereoselectivities at room temperature without temperature control. Since the high catalytic activity of 3 was observed, we next evaluated several other transition metal catalyst precursors for the catalytic ESR reaction under the influence of 2. This evaluation revealed that Ir(acac)(cod) (acac = acetylacetonate) (28) and [IrCl(cod)]2 (5) can be successfully used as metal catalyst precursors in the ESR reaction.

关键词： Asymmetric Catalysis Enantioselective Reduction Hydrosilylation Reaction N-Heterocyclic Carbene Iridium

Enhancing clinical proficiency through laparoscopic training using Japanese origami

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第3期7卷 102-106页

作者： Shunsuke Furukawa Masatsugu Hiraki Naoya Kimura ryota Sakurai ryo Kohata Naohiko Kohya Masashi Sakai Akashi Ikubo Ryuichiro Samejima Department of Surgery Japanese Red Cross Society Karatsu Red Cross HospitalSaga847-8588Japan Department of Surgery Saga University Faculty of MedicineSaga849-8501Japan

Objective This study aimed to investigate the clinical efficacy of laparoscopic training using origami,a traditional Japanese papercraft,using laparoscopic forceps to create origami *** In this retrospective study,4 surgeons were randomly divided into 2 groups:The training group,consisting of surgeons 1 and 2,and the non-training group,consisting of surgeons 3 and *** the course of a one-year study period,the training group regularly underwent laparoscopic surgery training with a dry box,wherein they folded a total of 1000 origami cranes using laparoscopic *** non-training group periodically underwent common laparoscopic surgery training of techniques such as suturing and *** surgeon regularly performed the transabdominal preperitoneal approach for inguinal *** training was conducted concurrently with the *** procedure time(peritoneum detachment,mesh placement,and closure of the peritoneum),total operation time(time from peritoneum detachment to closure of the peritoneum),and surgical outcomes were *** The training group showed greater improvement in the total operation time and more stable performance than the non-training ***,the time taken for peritoneum detachment was significantly shorter in the training *** Laparoscopic training using origami has the potential to enhance laparoscopic surgical skills and improve surgical outcomes.

关键词： Laparoscopic surgery Training Dry box Origami

Stresses in the Scapular Fossa Do Not Exceed the Yield Stress When Elevated up to 135 Degrees of Abduction after Reverse Shoulder Arthroplasty

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Journal of Biomedical Science and Engineering 2024年第2期17卷 35-40页

作者： Rina Sakai Tomonori Kenmoku ryo Tazawa Kazuhiro Yoshida Tomomi Mizuhashi Masanobu Ujihira Department of Medical Engineering and Technology Kitasato University School of Allied Health Sciences Sagamihara Japan Department of Orthopedic Surgery Kitasato University School of Medicine Sagamihara Japan Kitasato University Graduate School of Medical Sciences Sagamihara Japan

Reverse shoulder arthroplasty (RSA) is an effective treatment for rotator cuff tears. Despite its advantages, complications occur at a high rate. Complications requiring revision include a high rate of base plate failure, 38% of which are due to instability. The primary stability the base plate ensures is a crucial factor and, thus, is the subject of much debate in clinical studies and biomechanical research. This study is aimed to provide data that will contribute to the base plate’s pri-mary stability and glenoid longevity by clarifying the stresses at the scapular fossa and base plate interface associated with elevation after RSA. A 3D finite element model was created from the DICOM data for the scapulohumeral joint and SMR shoulder system. For loading conditions, 30 N was applied for each posi-tion with abduction angles of 0, 45, 90, and 135 degrees. A three-dimensional fi-nite element analysis was performed using the static implicit method with LS-DYNA. The von Mises stresses in the scapular fossa were found not to exceed the yield stress on the bone even after elevation to an abduction angle of 135 de-grees after RSA. It is rough to uniformly compare the yield stress and the von Mises stress, but it was inferred that the possibility of fracture is low unless a large external force is applied. A maximum von Mises stress showed 0 degrees of abduction, suggesting that the lowered position is in a more severe condition than the elevated position. If better improvement is desired, it may be necessary to devise ways to reduce the stress on the upper screw. .

关键词： Reverse Shoulder Arthroplasty Finite Element Analysis Yield Stress Glenoid

Lithium Ion Transport Environment by Molecular Vibrations in Ion-Conducting Glasses

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Energy & Environmental Materials 2024年第3期7卷 133-142页

作者： Hiroki Yamada Koji Ohara Satoshi Hiroi Atsushi Sakuda Kazutaka lkeda Takahiro Ohkubo Kengo Nakada Hirofumi Tsukasaki Hiroshi Nakajimai Laszlo Temleitner Laszlo Pusztai Shunsuke Ariga Aoto Matsuo Jiong Ding Takumi Nakano Takuya Kimura ryo Kobayashi Takeshi Usuki Shuta Tahara Koji Amezawa Yoshitaka Tateyama Shigeo Mori Akitoshi Hayashi Diffraction and Scattering Division Japan Synchrotron Radiation Research Institute(JASRI)1-1-1 KoutoSayo-choSayo-gun Hyogo 679-5198Japan Faculty of Materials for Energy Shimane University1060Nishi-Kawatsu-ChoMatsue Shimane 690-8504Japan Department of Applied Chemistry Graduate School of EngineeringOsaka Metropolitan University1-1 Gakuen-choSakaiOsaka 599-8531Japan Institute of Materials Structure Science High Energy Accelerator Research Organization(KEK)203-1 ShirakataTokai-muraNaka-gunlbaraki 319-1106Japan Graduate School of Engineering Chiba University 1-33 Yayoi-cho Inage-kuChiba 263-8522Japan Department of Materials Science Graduate School of EngineeringOsaka Metropolitan University1-1 Gakuen-choSakaiOsaka 599-8531Japan Wigner Research Centre for Physics Konkoly Thegeút 29-33 H-1121Budapest Hungary International Research Organisation of Advanced Science and Technology(IROAST) Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan Department of Applied Physics Nagoya Institute of TechnologyGokisoShowaNagoya 466-8555Japan Faculty of Science Yamagata University1-4-12 KojirakawaYamagata-shiYamagata 990-5860Japan Faculty of Science University of the Ryukyus1 SenbaruNishihara-choOkinawa 903-0213Japan Institute of Multidisciplinary Research for Advanced Materials Tohoku University2-1-1 KatahiraAoba-kuSendai 980-8577Japan Center for Green Research on Energy and Environmental Materials(GREEN)and International Center for Materials Nanoarchitectonics(MANA) National Institute for Materials Science(NIMS)TsukubaIbaraki 305-0044Japan

Controlling Li ion transport in glasses at atomic and molecular levels is key to realizing all-solid-state batteries,a promising technology for electric *** this context,Li_(3)PS_(4)glass,a promising solid electrolyte candidate,exhibits dynamic coupling between the Li^(+)cation mobility and the PS_(4)^(3-)anion libration,which is commonly referred to as the paddlewheel *** addition,it exhibits a concerted cation diffusion effect(i.e.,a cation-cation interaction),which is regarded as the essence of high Li ion ***,the correlation between the Li^(+)ions within the glass structure can only be vaguely determined,due to the limited experimental information that can be ***,this study reports that the Li ions present in glasses can be classified by evaluating their valence oscillations via Bader analysis to topologically analyze the chemical *** is found that three types of Li ions are present in Li_(3)PS_(4)glass,and that the more mobile Li ions(i.e.,the Li3-type ions)exhibit a characteristic correlation at relatively long distances of ***,reverse Monte Carlo simulations combined with deep learning potentials that reproduce X-ray,neutron,and electron diffraction pair distribution functions showed an increase in the number of Li3-type ions for partially crystallized glass structures with improved Li ion transport *** results show order within the disorder of the Li ion distribution in the glass by a topological analysis of their ***,considering the molecular vibrations in the glass during the evaluation of the Li ion valences is expected to lead to the development of new solid electrolytes.

关键词： electrolytes ionic conductors modeling molecular dynamics