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Perfluorooctanesulfonate and Perfluorooctanoate in Red Panda and Giant Panda from China

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Perfluorooctanesulfonate and Perfluorooctanoate in Red Panda...

野生动物生态与资源保护第三届全国学术研讨会

作者： norimitsu saito Research Institute for Environmental Sciences and Public Health of Iwate Prefecture MorigkaIwateJapan

＜正＞Perfluorooctanesulfonate（PFOS）and perfluorooctanoate（PFOA）are important perfluorochemicals （PFCs）in various ***,it has been shown that these compounds are widespread in the environment,wildlife and *** giant panda and the red panda belong to the order Carnivora,but are highly specialized as bamboo *** species are considered rare and *** this study,we

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Perfluorooctane Sulfonate(PFOS)and Perfluorooctanoic Acid(PFOA)in Precipitation in Dalian,China

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Perfluorooctane Sulfonate(PFOS)and Perfluorooctanoic Acid(PF...

2007中国科协年会

作者： norimitsu saito Kazuaki Sasaki Research Institute for Environmental Sciences and Public Health of Iwate Prefecture Morioka Iwate 020-0852 Japan

The concentration of perfluorooctane sulfonate(PFOS)and perfluorooctanoic acid(PFOA)in precipitation collected at both urban and suburban areas of Dalian city in China were analyzed with the purpose to investigate the atmospheric contamination by these chemicals in *** and PFOA were ubiquitous in all the precipitation samples,indicating the extensive pollution by these compounds in the atmosphere in Dalian. In the samples collected on 2006-12-16,the geometric mean value(GM)of PFOS concentration and PFOA concentration were 154.08 ng/L and 21.84 ng/L,*** of PFOS and PFOA in the precipitation in Dalian was much higher than that in Shenyang,an inland city in *** precipitations contained PFOS and PFOA at nearly the same order of *** results in this study offer an indication that wet deposition must be considered as a source of PFCs to the ground environment.

关键词： Atmospheric contamination Perfluorooctane sulfonate(PFOS) Perfluorooctanoic acid(PFOA) Precipitation

Natural Convection Melting in a Rectangular Heat Storage Tank of Carbon Nanotube Dispersed Latent Heat Storage Material

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Journal of Thermal Science 2024年第3期33卷 847-855页

作者： Shin-ichi MORITA Tomoya saito Kazunori TAKAI Yasutaka HAYAMIZU Naoto HARUKI Division of Mechanical and Electrical Engineering Kitami Institute of Technology165 Koen-choKitami-shiHokkaido090-8507Japan National Institute of Technology Yonago College4448 Hikona-cyoYonago-shiTottori683-8502Japan Okayama Prefectural University 111 KubokiSoja-shiOkayama719-1197Japan

A dispersion system fluid can convect even if the dispersoid is a solid ***,heat exchange performance can be improved while maintaining fluidity using a material with high thermal conductivity as the *** study presents the melting performance evaluation results of a latent heat storage material with a carbon nanotube(CNT)dispersion system with high thermal conductivity,which enhances the thermal conductivity of the latent heat storage material and does not limit free *** the thermal conductivity and enhancing the melting convection of the heat storage material result in increased latent heat storage *** this study,the thermal conductivity of the latent heat storage material was successfully increased by dispersing CNTs in the *** 0.1%(in mass)of multi-wall CNT(MWCNT)was dispersed in a paraffin-based latent heat storage material,the shear stress increased by 1.5 times at a shear rate of 500 s^(-1),while taking into account the potential effects of convective ***,a latent heat storage experiment was conducted in a rectangular heat storage tank using the CNT dispersion composition ratio as a parameter.A rectangular vessel with a heated vertical surface was used for the latent heat storage *** melting speed was determined by comparing the amount of latent heat stored in a CNT-dispersed latent heat storage material and a single-phase latent heat storage material *** experimental results show that the time required for the latent heat storage material to completely melt in the heat storage tank was the shortest for the single-phase latent heat storage material ***,the fastest melting progress was observed for the sample with 0.02%(in mass)MWCNT content in the melting rate range of up to approximately 40%in the *** results indicate that this phenomenon is caused by the difference in the melting rates in the upper part of the *** generated data are useful for det

关键词： latent heat storage phase change carbon nano tube free convection heat transfer

DiffMat:Latent diffusion models for image-guided material generation

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Visual Informatics 2024年第1期8卷 6-14页

作者： Liang Yuan Dingkun Yan Suguru saito Issei Fujishiro Graduate School of Science and Technology Keio UniversityKanagawaJapan School of Computing Tokyo Institute of TechnologyTokyoJapan Department of Information and Computer Science Keio UniversityKanagawaJapan

Creating realistic materials is essential in the construction of immersive virtual *** existing techniques for material capture and conditional generation rely on flash-lit photos,they often produce artifacts when the illumination mismatches the training *** this study,we introduce DiffMat,a novel diffusion model that integrates the CLIP image encoder and a multi-layer,crossattention denoising backbone to generate latent materials from images under various *** a pre-trained StyleGAN-based material generator,our method converts these latent materials into high-resolution SVBRDF textures,a process that enables a seamless fit into the standard physically based rendering pipeline,reducing the requirements for vast computational resources and expansive *** surpasses existing generative methods in terms of material quality and variety,and shows adaptability to a broader spectrum of lighting conditions in reference images.

关键词： SVBRDF Diffusion model Generative model Appearance modeling

维普期刊数据库评论

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指甲作为人类全氟化合物暴露标志物

指甲作为人类全氟化合物暴露标志物

第六届全国环境化学大会暨环境科学仪器与分析仪器展览会

作者：刘薇金一和许蕾 Kazuaki Sasaki norimitsu saito Itaru Sato Shuji Tsuda 大连理工大学环境学院工业生态与环境工程教育部重点实验室

＜正＞全氟烷酸化合物（Perfluoroalkyl compounds,PFAA）广泛应用于各种工业产品和日用消费品的生产过程,人类可通过多种途径暴露于PFAA。目前PFAA人类暴露评价主要依据血液中PFAA浓度,部分研究样本量较小,限制了结果的统计学意义和暴...

＜正＞全氟烷酸化合物（Perfluoroalkyl compounds,PFAA）广泛应用于各种工业产品和日用消费品的生产过程,人类可通过多种途径暴露于PFAA。目前PFAA人类暴露评价主要依据血液中PFAA浓度,部分研究样本量较小,限制了结果的统计学意义和暴露评价的准确性。采样方法的简易性和非损伤性是影响人群暴露评价样本量的重要因素之一。特别是儿童,仅有少数脐带血和混合样品的研究结果。目前有限的人群暴露水平数据限制了全氟化合物的流行病学调查和健康风险评价。

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指甲作为全氟化合物慢性暴露指示物

指甲作为全氟化合物慢性暴露指示物

持久性有机污染物论坛2012暨第七届持久性有机污染物全国学术研讨会

作者：刘薇金一和许蕾 Kazuaki Sasaki norimitsu saito Itaru Sato Shuji Tsuda 大连理工大学环境学院工业生态与环境工程教育部重点实验室岩手县环境保健研究中心岩手大学

1.引言目前全氟烷酸化合物(Perfluoroalkyl compounds,PFAA)人类暴露评价主要依据血液中PFAA浓度,部分研究样本量较小,限制了结果的统计学意义和暴露评价的准确性。特别是儿童,仅有少数脐带血和混合样品的研究结果。目前有限的人群暴露...

1.引言目前全氟烷酸化合物(Perfluoroalkyl compounds,PFAA)人类暴露评价主要依据血液中PFAA浓度,部分研究样本量较小,限制了结果的统计学意义和暴露评价的准确性。特别是儿童,仅有少数脐带血和混合样品的研究结果。目前有限的人群暴露水平数据限制了全氟化合物的流行病学调查和健康风险评价。指甲是一种良好的暴露生物指示物,属非损伤性采样方法,且能够反映人体的长期

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Assessment of corrected time-step method for nominal ionospheric gradient calculation: A comparative analysis with spatial approaches

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Earth and Planetary Physics 2024年第4期8卷 641-649页

作者： Slamet Supriadi Prayitno Abadi Susumu saito Harry Bangkit Dwiko Unggul Prabowo Adi Purwono Ginaldi Ari Nugroho Research Center for Smart Mechatronics National Research and Innovation Agency(BRIN)BandungIndonesia Research Center for Climate and Atmosphere BRINBandungIndonesia School of Electrical Engineering Telkom UniversityKab.BandungIndonesia Electronic Navigation Research Institute National Institute of MaritimePort and Aviation TechnologyTokyoJapan Research Center for Space BRINBandungIndonesia

The effect of ionospheric delay on the ground-based augmentation system under normal conditions can be mitigated by determining the value of the nominal ionospheric gradient(σvig).The nominal ionospheric gradient is generally obtained from Continuously Operating Reference Stations data by using the spatial single-difference method(mixed-pair,station-pair,or satellite-pair)or the temporal single-difference method(time-step).The time-step method uses only a single receiver,but it still contains ionospheric temporal *** introduce a corrected time-step method using a fixed-ionospheric pierce point from the geostationary equatorial orbit satellite and test it through simulations based on the global ionospheric *** also investigate the effect of satellite paths on the corrected time-step method in the region of the equator,which tends to be in a more north–south direction and to have less coverage for the east–west ionospheric *** study also addresses the limitations of temporal variation correction coverage and recommends using only the correction from *** processes are developed under simulations because observational data are still difficult to *** findings demonstrate that the corrected time-step method yieldsσvig values consistent with other approaches.

关键词： ground-based augmentation system nominal ionospheric gradient time-step correction global ionospheric model

沈阳市降雪中PFOS和PFOA污染现状调查

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环境科学 2007年第9期28卷 2068-2073页

作者：刘薇金一和全燮董光辉刘冰王静王柯于棋麟齐藤宪光大连理工大学环境与生命学院工业生态与环境工程教育部重点实验室大连116024 中国医科大学公共卫生学院沈阳110001 岩手县环境保健研究中心

通过调查降雪中PFOS和PFOA的浓度,阐明了沈阳市大气中PFOS和PFOA的污染状况和污染规律.2006-02-06采集沈阳市区和郊区共计36个采样点的降雪样品,2006-02-25在其中5个采样点再次采集降雪样品.固相萃取融雪水中的PFOS和PFOA,利用LC-MS-SI... 详细信息

通过调查降雪中PFOS和PFOA的浓度,阐明了沈阳市大气中PFOS和PFOA的污染状况和污染规律.2006-02-06采集沈阳市区和郊区共计36个采样点的降雪样品,2006-02-25在其中5个采样点再次采集降雪样品.固相萃取融雪水中的PFOS和PFOA,利用LC-MS-SIM法测定样品中PFOS和PFOA浓度.全部样品中均检出PFOS和PFOA.2006-02-06降雪中PFOS和PFOA的浓度几何平均值分别为2.0 ng·L^-1（范围：0.4-46.2 ng·L^-1）和3.6 ng·L^-1（范围：1.6-22.4 ng·L^-1）,95%置信区间分别为1.5-2.8 ng·L^-1和3.1-4.2 ng·L^-***和PFOA的最高浓度同时出现在郊区采样点朱尔屯,市中心区2种物质的浓度呈显著正相关.2006-02-25的5个采样点降雪中PFOS和PFOA的浓度几何平均值均为2.2 ng·L^-1.2次降雪中PFOS浓度差异不显著,2006-02-25降雪中PFOA浓度高于2006-02-06.结果表明,沈阳市区和郊区降雪中广泛存在PFOS和PFOA污染,局部区域可能存在共同的PFOS和PFOA污染来源;沈阳地区有较稳定的PFOS来源持续向大气中输送该类物质;PFOS和PFOA的环境行为可能不同.

关键词：全氟辛烷磺酸(PFOS) 全氟辛酸(PFOA) 降雪降水清除作用沈阳市

Hyperacute experimental model of rat lung transplantation using a coronary shunt cannula

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World Journal of Transplantation 2024年第2期14卷 155-161页

作者： Munehisa Takata Yusuke Tanaka Daisuke saito Shuhei Yoshida Isao Matsumoto Department of Thoracic Surgery Kanazawa UniversityKanazawa 920-8641IshikawaJapan

BACKGROUND Lung transplantation is a well-established treatment of end-stage lung disease.A rodent model is an inexpensive way to collect biological data from a living model after lung ***,mastering the surgical technique takes time owing to the small organ *** To conduct rat lung transplantation using a shunt cannula(SC)or modified cannula(MC)and assess their *** Rat lung transplantation was performed in 11 animals in the SC group and 12 in the MC *** devised a method of rat lung transplantation using a coronary SC for coronary artery bypass surgery as an anastomosis of pulmonary arteri-ovenous vessels and *** same surgeon performed all surgical proce-dures in the donor and recipient rats without using a magnifying *** success rate of lung transplantation,operating time,and PaO2 values were com-pared after 2-h reperfusion after *** Ten and 12 lungs were successfully transplanted in the SC and MC groups,*** the SC group,one animal had cardiac arrest within 1 h after reperfusion owing to bleeding during pulmonary vein *** opera-ting time for the removal of the heart-lung block from the donor and preparation of the left lung graft was 26.8±2.3 and 25.7±1.3 min in the SC and MC groups,respectively(P=0.21).The time required for left lung transplantation in the recipients was 37.5±2.8 min and 35.9±1.4 min in the SC and MC groups,respectively(P=0.12).PaO2 values at 2 h after reperfusion were 456.2±25.5 and INTRODUCTION Lung transplantation is a well-established treatment of end-stage lung *** immune and non-immune mech-anisms in lung transplantation are highly complex,and post-transplant complications such as infections and primary and chronic lung allograft dysfunction must be reduced to improve ***,there is a need for immunological and pathophysiological analyses using animal lung transplantation *** rat lung transplantation model was f

关键词： Lung transplantation Rat Shunt cannula Modified cannula Reperfusion