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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

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Effect of current density on the morphology of Zn electrodeposits

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Journal of University of Science and Technology Beijing 2004年第6期11卷 529-532页

作者： AilingFan WenhuaiTian M.kurosaki MaterialsScienceandEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083China／／TaiyuanUniversityofScienceandTechnologyTaiyuan030024China MaterialsScienceandEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083China SteelResearchLaboratories NipponSteelCorporationShintomiFuttsu293-8511Japan

The effect of current density on the morphology of Zn electrodepositsprepared by a flow-channel cell was investigated by scanning electron microscopy (SEM). It was foundthat the morphology of Zn electrodeposits evolves from thin-layered hexagonal eta -phase crystalsto pyramidal eta -phase particles with increasing the current density. The morphological evolutionat various flow rates was also examined and the results show that the morphological evolution at alower flow rate is more remarkable than that at a higher flow rate with increasing the currentdensity. To reveal the mechanism of the morphological evolution in detail, the atomic configurationon both (0001)_eta and {1100 }_eta planes under different current densities was investigated, it wasnoted that a specify current density could provide a good condition for the layered epitaxialgrowth of hexagonal T)-phase.

关键词： Zn electrodeposit current density flow rate morphological evolution

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Evolution of zinc morphology during continuous electrodeposition

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Journal of University of Science and Technology Beijing 2003年第1期10卷 35-38页

作者： Ailing Fan M.kurosaki 等 DepartmentofMaterialsPhysicsandChemistry UniversityofScienceandTechnologyBeijingBeijing100083China SteelResearchLaboratoires NipponSteelCorporation20-1ShintomiFuttsuChiba-ken293

The morphology evolution of zinc continuous electrodeposits with nano-sized crystals on the ferrite substrate has been studied by in-situ scanning tunnel spectroscopy (STM). It is found that the morphology of zinc electrodeposits varies from initial granules with a size of about 30nm to layered platelets with increasing deposition time. Meanwhile, the crystal structure of the zinc electrodeposits is identified to be hexagonal η-phase by X-ray diffraction. The orientation relationship between zinc crystals and the substrate surface can be interpreted in terms of the misfit and the atomic correspondence of the interphase boundary between the η-phase deposits and α-Fe substrate.

关键词： Zn electrodeposit crystal morphology epitaxial growth orientation relationship scanning tunnel spectroscopy

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Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia

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Journal of Arid Land 2017年第1期9卷 132-142页

作者： Batdelger GANTSETSEG Masahide ISHIZUKA Yasunori kurosaki Masao MIKAMI Information and Research Institute of Meteorology Hydrology and Environment Ulaanbaatar 15160 Mongolia Faculty of Engineering Kagawa University Takamatsu 761-03 96 Japan Arid Land Research Center Tottori University Tottori 680-0001 Japan Japan Meteorological Business Support Center Tokyo 101-0054 Japan

This study investigated the seasonal variations of the normalized difference vegetation index（NDVI） and its relationships with climatic variables and topography in a small-scale（20 km×20 km） area（i.e., Tsogt-Ovoo village） within the desert steppe zone of Mongolia using in-situ observed climate data and satellite remote sensing data. We found that the topography is very important for vegetation growth in the desert steppe although the summer precipitation is the constraining factor. The unexpectedly high NDVI（up to 0.56）, as well as the high aboveground biomass, in the valley bottom was primarily resulted from the topography-modulated redistribution of overland flow after relatively heavy precipitation events during the growing season. This makes the valley bottoms in desert steppes not only reliable feeding resources for livestock but also heavens for wild lives. But, the detected large standard deviation of annual maximum NDVI（NDVI_（max）） from 2000 to 2013 in the valley bottom in response to rather variable precipitation implies that the valley bottoms under desert steppe climates are more vulnerable to climatic change.

关键词： topography climatic variable desert valley vegetation soil moisture Terra-MODIS NDVI

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AFM STUDY ON THE MORPHOLOGICAL CHANGE OF Zn ELECTRODEPOSIT

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Acta Metallurgica Sinica(English Letters) 2003年第5期16卷 360-364页

作者： A.L.Fan W.H.Tian M.kurosaki DepartmentofMaterialsPhysicsandChemistry UniversityofScienceandTechnologyBeijingBeijing100083China SteelResearchLaboratories NipponSteelCorporation20-1ShintomiFuttsuChiba-Ken293-8511Japan

Nano-sized growth of zinc electrodeposit on the ferrite substrate has been studied by means of in situ scanning tunnel microscopy (STM) and atomic force micoscopy (AFM). It is found that the morphology of zinc electrodeposit varies from initial about 30nm granular crystals to layered platelet crystals with increasing deposition time by using in situ STM. With AFM, the results show that the platelet crystals are hexagonal in shape and the hexagonal platelet crystals form steps perpendicular to the growth direction by side-by-side stacking along the (0001)η surface. The mechanism of morphological change is discussed in details. It is proposed that these steps grow laterally as a result of the embedment of zinc ion clusters.

关键词： zinc electrodeposit atomic force microscopy crystal morphology step growth scanning tunnel microscopy

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ANALYTICAL SOLUTIONS FOR THE SLOSHING LOADING ON CIRCULAR CYLINDRICAL LIQUID TANKS WITH INTERIOR SEMI-POROUS BARRIERS

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Journal of Hydrodynamics 2001年第2期13卷 32-39页

作者： Miao, G.P. Ishida, H. Saitoh, T. kurosaki, K. Sch. of Naval Arch. and Ocean Eng. Shanghai Jiaotong Univ. Shanghai 200030 China

The estimation of sloshing loading on liquid tanks is of fundamental importance due to the wide and important applications of liquid tanks in various engineering aspects. Analytical solutions for the sloshing loading on circular cylindrical liquid tanks with an interior concentric vertical thin semi-porous barrier under external excitations are presented. And the extensions of the solutions to the elastic vibrations and to the high frequency limit to count for the earthquake response are also included. A clear view on the influence of semi-porous barriers to the sloshing response of oscillating tanks is obtained by the analyses of systematic computational results. The present results may offer guidance to the corresponding design for liquid tanks of various applications and also a basis of comparison for the development of more sophisticated numerical methods for hydrodynamic and hydro-elastic analyses.

关键词： Boundary conditions Mathematical models Tanks (containers) Vibration measurement

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HYDRODYNAMIC LOADS ON OIL STORAGE TANKS WITH INTERIOR SEMI-POROUS BARRIERS UNDER EARTHQUAKES

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Journal of Hydrodynamics 2001年第1期13卷 1-7页

作者： Miao, G.P. Ishida, H. Saitoh, T. kurosaki, K. Sch. of Naval Archit. and Ocean Eng. Shanghai Jiaotong Univ. Shanghai 200030 China

The estimation of the hydrodynamic loading on cylindrical oil storage tank during earthquakes is of fundamental importance in the anti-seismic design. Interior semi-porous barriers are considered being effective to reduce the hydrodynamic response of the inner fluid and the loading on the tank wall. A reduced two-dimensional source distribution method and sub-region matching technique are developed for the prediction of three-dimensional hydrodynamic forces on oil storage tanks of arbitrary sections with interior semi-porous barriers of different configurations under earthquake excitations. Excellent agreement is observed between the present results and the corresponding analytical results for a circular cylindrical oil tank with a concentric interior semi-porous barrier, which shows the validity and effectiveness of the present method. A clear view of the influence of semi-porous barriers on the hydrodynamic response of tanks during earthquakes is obtained by the analyses of computational results, which may offer some guidance to the corresponding anti-seismic design for oil storage tanks and similar structures. The method is also extended to include the effects of the elastic vibrations of the tank.

关键词： Earthquake resistance Hydrodynamics

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Distal posterior inferior cerebellar artery aneurysm with cerebellar arteriovenous malformation treated by open surgery: a case report

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Chinese Neurosurgical Journal 2019年第4期5卷 237-241页

作者： Takaya Yasuda Yoshinori Maki Ryota Ishibashi Yoshitaka kurosaki Masaki Chin Sen Yamagata Department of Neurosurgery Kurashiki Central Hospital1-1-1 Miwa KurashikiOkayamaJapan Shinko Memorial Hospital 1-4-47 WakihamamachiChuoku KobeshiHyogo 651-0072Japan

Background:The detection of a feeder aneurysm and an arteriovenous malformation(AVM)is relatively rare for the intracranial *** distal posterior inferior cerebellar artery aneurysm(DPICAAn)is reported to coexist or relate with the cerebellar *** previous reports about the treatment of a DPICAAn and a cerebellar AVM,endovascular embolization with the sacrifice of the posterior inferior cerebellar artery(PICA)has often been ***,there have been few reports of simultaneous open surgery for coexistent cases of DPICAAn and cerebellar *** description:A 67-year-old male presented with a *** detected a right DPICAAn in the telovelotonsillar segment and a cerebellar AVM primarily fed by the left superior cerebellar artery(SCA).In addition,the nidus was located medially in the left upper cerebellar *** resonance imaging raised suspicions of asymptomatic past hemorrhage in the cerebellar *** left PICA was agenesis,and the right PICA perfused the bilateral inferior cerebellar hemispheres;thus,the right PICA could not be *** selected open surgery to prevent any hemorrhagic event from the DPICAAn and the cerebellar *** cerebellar AVM was completely removed,and the DPICAAn was successfully clipped in a single-session open ***:Open surgery can be considered for DPICAAn and cerebellar *** anatomical location of the DPICAAn and AVM contributed to the success of a single-session open surgery.

关键词： Intracranial aneurysm Arteriovenous malformations Cerebellum Surgical procedures Angiography

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Risk factors and prevention of biliary anastomotic complications in adult living donor liver transplantation

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World Journal of Gastroenterology 2007年第31期13卷 4236-4241页

作者： Satoshi Yamamoto Yoshinobu Sato Hiroshi Oya Hideki Nakatsuka Takashi Kobayashi Yoshiaki Hara Takaoki Watanabe Isao kurosaki Katsuyoshi Hatakeyama Division of Digestive and General Surgery Niigata University Graduate School of Medical and Dental Sciences Niigata Japan

To evaluate risk factors of biliary anastomotic complications （BACs） and outcomes according to type of biliary reconstruction. METHODS： A total of 33 consecutive adult living donor liver transplantation （LDLT） were reviewed, 17 of which had undergone Duct-to-Duct anastomosis （D-D）. The remaining 16 patients received Roux-en-Y anastomosis （R-Y）. The perioperative factors, such as the type of graft and the number of graft bile ducts, were analyzed retrospectively. RESULTS： The overall incidence of BACs was 39.4%. The incidence of BACs was significantly higher in the patients with than without neoadjuvant chemotherapy （71.4% vs 10%, P = 0.050）. There was no significant difference in the incidence of biliary leakage in patients with D-D vs. those with R-Y. The incidence of biliary strictures following the healing of biliary leakage was significantly higher in D-D （60%） than in R-Y （0%）（P = 0.026）. However, the incidence of BACs related bacteremia was significantly higher in R-Y than in D-D （71.4% vs 0%, P = 0.008）. In D-D, use of T-tube stent remarkably reduced the incidence of 8ACs, compared with straight tube stent （0% vs 50%, P = 0.049）. CONCLUSION： Our experience showed an increase of BACs related bacteremia in the patients with R-Y. Therefore, D-D might be a preferred biliary reconstruction. However, the surgical refinement of D-D should be required because of the high incidence of biliary strictures. Use of the T-tube stent might lead to a significant reduction of BACs in D-D.

关键词： Living donor Liver transplantation Biliaryanastomotic complication Duct-to-Duct anastomosis Roux-en-Y anastomosis

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Effect of stones on the sand saltation threshold during natural sand and dust storms in a stony desert in Tsogt-Ovoo in the Gobi Desert,Mongolia

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Journal of Arid Land 2021年第7期13卷 653-673页

作者： Batjargal BUYANTOGTOKH Yasunori kurosaki Atsushi TSUNEKAWA Mitsuru TSUBO Batdelger GANTSETSEG Amarsaikhan DAVAADORJ Masahide ISHIZUKA Tsuyoshi T SEKIYAMA Taichu Y TANAKA Takashi MAKI Arid Land Research Center Tottori UniversityTottori 680-0001Japan Information and Research Institute of Meteorology Hydrology and EnvironmentUlaanbaatar 15160Mongolia Faculty of Engineering and Design Kagawa UniversityTakamatsu 761-0396Japan Meteorological Research Institute Japan Meteorological AgencyTsukuba 305-0052Japan

Non-erodible elements such as stones and vegetation are key to controlling wind erosion and dust emission in *** deserts are widely distributed in the Gobi Desert,but the effect of stones on wind erosion and dust emission have not been well studied,except under artificial *** this study,we evaluated the effect of stones on wind erosion and dust emission by measuring the sand saltation threshold in a stony desert in Tsogt-Ovoo in the Gobi Desert,Mongolia,under natural surface conditions during sand and dust *** quantified the amount of stones by measuring the roughness density,and determined the threshold friction velocity for sand saltation by measuring wind speed and sand saltation *** results showed that the threshold friction velocity increased with the roughness density of *** the northern part of the study area,where neither a surface crust nor vegetation was observed,the roughness density of stones was 0.000 in a topographic depression(TD),0.050 on a northern slope(***),and 0.160 on the northern mountain(***).The mean threshold friction velocity values were 0.23,0.41,and 0.57 m/s at the TD,***,and *** sites,*** the southern part of the study area,the roughness density values of stones were 0.000 and 0.070-0.320 at the TD and southern slope sites,respectively,and the mean threshold friction velocities were 0.23 and 0.45-0.71 m/s,*** further compared the observed threshold friction velocities with simulated threshold friction velocities using Raupach's theoretical roughness correction and the measured roughness density values,and found that Raupach's roughness correction worked very well in the simulation of threshold friction velocity in the stony *** means that the results of our stone measurement can be applied to a numerical dust model.

关键词： arid region threshold friction velocity roughness density shear stress sand saltation threshold roughness correction Gobi Desert

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