检索结果-南通市图书馆

Chinese Optics Letters 2017年第9期15卷 2-6页

作者： O.Semyachkina-Glushkovskaya A.Abdurashitov A.Pavlov A.Shirokov n.navolokin O.Pavlova A.Gekalyuk M.Ulanova n.Shushunova A.Bodrova E.Saranceva A.Khorovodov I.Agranovich V.Fedorova M.Sagatova A.E.Shareef C.Zhang D.Zhu V.Tuchin Saratov national Research State University Saratov 410012Russia yuri Gagarin State Technical University of Saratov Saratov 410054Russia Institute of Biochemistry and Physiology of Plants and Microorganisms Russian Academy of SciencesSaratov 410049Russia Saratov State Medical University Saratov 410012Russia Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and Technology(HUST)Wuhan 430074China Key Laboratory for Biomedical Photonics HUSTMinistry of EducationWuhan 430074China national Research Tomsk State University Tomsk 634050Russia Institute of Precision Mechanics and Control Russian Academy of SciencesSaratov 410028Russia

The cerebral blood flow（CBF） alterations related to sound-induced opening of the blood–brain barrier（BBB） in adult mice are studied using laser speckle contrast imaging（LSCI） and wavelet analysis of vascular *** results clearly show that the opening of the BBB is accompanied by the changes of venous but not microvessel circulation in the brain. The elevation of the BBB permeability is associated with the decrease of venous CBF and the increase of its complexity. These data suggest that the cerebral veins rather than microvessels are sensitive components of the CBF related to the opening BBB.

关键词： BBB Laser speckle imaging and wavelet analysis of cerebral blood flow associated with the opening of the blood brain barrier by sound

Structure,mechanical characteristics,biodegradation,and in vitro cytotoxicity of magnesium alloy ZX11 processed by rotary swaging

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2020年第4期8卷 1038-1046页

作者： natalia Martynenko natalia Anisimova Mikhail Kiselevskiy natalia Tabachkova Diana Temralieva Dmitry Prosvirninb Vladimir Terentiev Andrey Koltygina Vladimir Belov Mikhail Morosov Vladimir Yusupov Sergey Dobatkina national University of Science and Technology"M1SIS" Leninsky prospect4119049 MoscowRussia A.A.Baikov Institute of Metallurgy and Materials Science of the RAS Leninsky prospect49119334 MoscowRussia ≪n.n.Blokhin national Medical Research Center of Oncology≫of the Ministry of Health of the Russian Federation Kashirskoye Highway23115478 MoscowRussia A.M.Prokhorov General Physics Institute of the RAS Vavilova st.3&Moscow 119991、Russia 5.Department of Materials Science and EngineeringMonash UniversityClaytonMelbourne VIC 3800Australia 6.Department of Mechanical EngineeringThe University of Western AustraliaCrawleyPerth WA 6009Australia

Rotary swaging(RS)of alloy Mg-1.03Zn-0.66Ca(ZX11)was shown to refine the average grain size to 4.5±1.2μm in a longitudinal section and 4.8±0.9μm in a transverse *** addition,a small amount of Mg2Ca particles about 300nm in size and Mg6Zn3Ca2 particles with a size of about lOOnm was *** resulted in pronounced strengthening:the yield strength and the ultimate tensile strength rose to 210±8 MPa and 276±6 MPa,respectively,while the elongation hardly decreased(22.0±1.8% and 18.3±2.9% before and after RS).Furthermore,RS led to an increase in the fatigue limit of the alloy from 120 MPa to 135 MPa and did not impair its resistance to chemical *** studies in vitro showed that ZX11 induces hemolysis without inhibiting the viability of peripheral blood mononuclear cells and has a more pronounced cytotoxic effect on tumor cells in comparison with non-transformed *** significant difference of the latter effect between the initial and the deformed states was observed.

关键词： Magnesium alloy Rotary swaging Mechanical characteristics Hemolysis Cell viability Cytotoxicity

Use of hybrid chitosan membranes and human mesenchymal stem cells from the Wharton jelly of umbilical cord for promoting nerve regeneration in an axonotmesis rat model

在线全文

学校读者我要写书评

暂无评论

neural Regeneration Research 2012年第29期7卷 2247-2258页

作者： Andrea Gärtner Tiago Pereira Maria Joāo Simōes Paulo AS Armada-da-Silva Miguel L França Rosa Sousa Simone Bompasso Stefania Raimondo Yuki Shirosaki yuri nakamura Satoshi Hayakawa Akiyoshi Osakah Beatriz Porto Ana Lúcia Luís Artur SP Varejāo Ana Colette Maurício Animal Science and Study Centre/Food and Agrarian Sciences and Technologies Institute Porto University4099-003 PortoPortugal Institute of Biomedical Sciences Abel Salazar Veterinary Clinics DepartmentPorto UniversityPorto 4099-003Portugal Faculty of Human Kinetics Technical University of LisbonCruz Quebrada-Dafundo1499-002Portugal Institute of Biomedical Sciences Abel Salazar Cytogenetic DepartmentPorto UniversityPorto 4099-003Portugal neuroscience Institute of the Cavalieri Ottolenghi Foundation Orbassano 10043TurinItaly Department of Clinical and Biological Sciences University of TurinOrbassano 10010TurinItaly Graduate School of natural Science and Technology Okayama UniversityOkayama 700-8530Japan Faculty of Engineering Okayama UniversityOkayama 700-8530Japan Department of Veterinary Sciences Research Centre in SportsHealth and Human DevelopmentUniversity of Trás-os-Montes and Alto DouroVila Real 5001-801Portugal

Many studies have been dedicated to the development of scaffolds for improving post-traumatic nerve regeneration. The goal of this study was to assess the effect on nerve regeneration, associating a hybrid chitosan membrane with non-differentiated human mesenchymal stem cells isolated from Wharton＇s jelly of umbilical cord, in peripheral nerve reconstruction after crush injury. Chromosome analysis on human mesenchymal stem cell line from Wharton＇s jelly was carried out and no structural alterations were found in metaphase. Chitosan membranes were previously tested in vitro, to assess their ability in supporting human mesenchymal stem cell survival, expansion, and differentiation. For the in vivo testing, Sasco Sprague adult rats were divided in 4 groups of 6 or 7 animals each： Group 1, sciatic axonotmesis injury without any other intervention （Group 1-Crush）; Group 2, the axonotmesis lesion of 3 mm was infiltrated with a suspension of 1 250 -1 500 human mesenchymal stem cells （total volume of 50 pL）（Group 2-CrushCell）; Group 3, axonotmesis lesion of 3 mm was enwrapped with a chitosan type Ill membrane covered with a monolayer of non-differentiated human mesenchymal stem cells （Group 3-CrushChitlllCell） and Group 4, axonotmesis lesion of 3 mm was enwrapped with a chitosan type III membrane （Group 4-CrushChiUll）. Motor and sensory functional recovery was evaluated throughout a healing period of 12 weeks using sciatic functional index, static sciatic index, extensor postural thrust, and withdrawal reflex latency. Stereological analysis was carded out on regenerated nerve fibers. Results showed that infiltration of human mesenchymal stem cells, or the combination of chitosan membrane enwrapment and human mesenchymal stem cell enrichment after nerve crush injury provide a slight advantage to post-traumatic nerve regeneration. Results obtained with chitosan type III membrane alone confirmed that they significantly improve post-traumatic axonal regrowth and may represent

关键词： stem cells mesenchymal stem cells Wharton jelly umbilical cord biomaterials chitosan axonotmesis functional analysis rat karyotype analysis stereological analysis

Direct mass measurements of neutron-rich ^(86)Kr projectile fragments and the persistence of neutron magic number n=32 in Sc isotopes

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2015年第10期39卷 24-28页

作者：徐星王猛张玉虎徐瑚珊帅鹏涂小林 yuri A.Litvinov 周小红孙保华原有进夏佳文杨建成 Klaus Blaum 陈瑞九陈相成付超义葛壮胡正国黄文嘉刘大委蓝乙华马新文毛瑞士 T.Uesaka 肖国青邢元明 T.Yamaguchi Y.Yamaguchi 曾奇颜鑫亮赵红卫赵铁成章卫詹文龙 Key Laboratory of High Precision nuclear Spectroscopy and Center for nuclear Matter Science Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences CSnSM-In2P3-CnRS Université de Paris Sud Research Center for Hadron Physics National Laboratory of Heavy Ion Accelerator Facility in Lanzhou and University of Science and Technology of China GSI Helmholtzzentrum für Schwerionenforschung School of Physics and nuclear Energy Engineering Beihang University Max-Planck-Institut fr Kernphysik RIKEn nishina Center Department of Physics Saitama University

In this paper, we present direct mass measurements of neutron-rich S6Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry （IMS） method. The new mass excesses of ^52-54Sc nuclides are determined to be -40492（82）, -38928（114）, -34654（540） keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 （AME12）. In particular, ^53Sc and ^54sc are more bound by 0.8 MeV and 1.0 MeV, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number n=32 in Sc isotopes.

关键词： isochronous mass spectrometry exotic nuclei mass excess new magic number

在线全文

学校读者我要写书评

暂无评论

利用埃洛石负载防污剂制备抗污弹性体

利用埃洛石负载防污剂制备抗污弹性体

The Association of Autism Spectrum Disorders and Symptoms of Asthma, Allergic Rhinoconjunctivitis and Eczema among Japanese Children Aged 3 - 6 Years

中国化学会第30届学术年会

作者：公聪聪付烨杨春张立群 yuri M.Lvov 王文才有机无机复合材料重点实验室北京化工大学先进弹性体材料研究中心北京化工大学 Institute for Micromanufacturing Louisiana Tech University

埃洛石纳米管是一种天然的硅酸盐管状材料,内径15-20 nm,外径50-70 nm,可在内部负载药物、催化剂等小分子或低分子量物质来达到缓释的效果。利用埃洛石纳米管负载防污剂n-(2,4,6-三氯苯基)马来酰亚胺(TCPM)制备具有防污性能的弹性体:乙... 详细信息

埃洛石纳米管是一种天然的硅酸盐管状材料,内径15-20 nm,外径50-70 nm,可在内部负载药物、催化剂等小分子或低分子量物质来达到缓释的效果。利用埃洛石纳米管负载防污剂n-(2,4,6-三氯苯基)马来酰亚胺(TCPM)制备具有防污性能的弹性体:乙烯-醋酸乙烯酯共聚物(EVA)。将防污剂装载到埃洛石管腔内,可达到缓慢释放的效果,大大延长防污剂的作用时间。实验证明,负载在埃洛石内部的防污剂在EVA基体中的缓释时间超过12个月,远大于将防污剂直接添加到EVA中。此外作为填料,埃洛石可以提高热塑性弹性体EVA的机械性能及结晶度等,具有良好的应用前景。

关键词：防污埃洛石弹性体缓释

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Health 2017年第8期9卷 1235-1250页

作者： Daisuke Hori Hiromasa Tsujiguchi Yasuhiro Kambayashi Toshio Hamagishi Masami Kitaoka Junko Mitoma Hiroki Asakura Fumihiko Suzuki Enoch Olando Anyenda nguyen Thi Thu Thao Yohei Yamada Satoko Tamai Koichiro Hayashi yuri Hibino Aki Shibata Takiko Sagara Shinichiro Sasahara Ichiyo Matsuzaki Hiroyuki nakamura Department of Environmental and Preventive Medicine Graduate School of Medical Science Kanazawa University Kanazawa Japan Faculty of Medicine University of Tsukuba Tsukuba Japan International Institute for Integrative Sleep Medicine University of Tsukuba Tsukuba Japan

There is insufficient epidemiological evidence on the relationship between autism spectrum disorder (ASD) and allergic diseases. We performed a cross-sectional survey to elucidate the associations between them using validated screening tools. The participants were children aged 3 - 6 years attending kindergarten or nursery school in Shika Town, Japan (n = 417;valid response rate = 80.4%). Autism spectrum features were scored on the Social Communication Questionnaire (SCQ). Allergic symptoms (asthma, allergic rhinoconjunctivitis, and eczema) were determined according to the criteria of the International Study of Asthma and Allergies in Childhood. A total of 15 children (4.5%) had an SCQ score of 11 points or higher. The prevalence of symptoms was 14.7% for asthma, and 5.3% for allergic rhinoconjunctivitis, and 11.4% for eczema. Logistic regression indicated that symptoms of eczema were significantly associated with SCQ scores of 11 points or higher [odds ratio (OR), 4.38;95% confidence interval (CI), 1.41 - 13.59]. The association persisted after adjustment for age, sex, and BMI (OR, 3.84;95% CI, 1.20 - 12.24). Moreover, asthmatic symptoms were significantly associated with male sex (OR, 2.09;95% CI, 1.12 - 3.92) and overweight status (OR, 2.45;95% CI, 1.03 - 5.83). This suggests that higher SCQ scores, which imply more autism spectrum features, are associated with higher prevalence of eczema symptoms. While no causal relationships can be made, ASD might be associated with eczema.

关键词： Asthma Autism Spectrum Disorder Eczema Early Screening Social Communication Questionnaire

Evolution and legacy of East Asian aurochs

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2024年第21期69卷 3425-3433页

作者： Jiawen Hou Xiwen Guan Xiaoting Xia Yang Lyu Xin Liu yuri Mazei Ping Xie Fengqin Chang Xiaonan Zhang Jialei Chen Xinyi Li Fengwei Zhang Liangliang Jin Xiaoyu Luo Mikkel-Holger SSinding Xin Sun Alessandro Achilli nicola Rambaldi Migliore Dongju Zhang Johannes ALenstra Jianlin Han Qiaomei Fu Xinyi Liu Xiaoming Zhang ningbo Chen Chuzhao Lei Hucai Zhang Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi Province College of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100China Key Laboratory of Genetic Evolution&Animal Models Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China Yunnan Key Laboratory of Integrative Anthropology Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China Department of Biology Shenzhen MSU-BIT UniversityShenzhen 518172China Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650500China Section for Computational and RnA Biology Department of BiologyUniversity of CopenhagenCopenhagen DK-1350Denmark Department of Biology and Biotechnology L.Spallanzani University of PaviaPavia 27100Italy Key Laboratory of Western China's Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 73000oChina Faculty of Veterinary Medicine Utrecht UniversityUtrecht 3584 CSthe Netherlands Yazhouwan national Laboratory Sanya 572024China CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources Institute of Animal ScienceChinese Academy of Agricultural Sciences(CAAS)Beijing 100193China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyCenter for Excellence in Life and PaleoenvironmentChineseAcademy of SciencesBeijing 100044China Anthropology Department Washington University in St.LouisMissouriMO 63130USA n Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming 650201China Southwest United Graduate School Kunming 650500China

Aurochs(Bos primigenius),once widely distributed in Afro-Eurasia,became extinct in the early 1600 ***,their phylogeography and relative contributions to domestic cattle remain *** this study,we analyzed 16 genomes of ancient aurochs and three mitogenomes of ancient bison(Bison priscus)excavated in East Asia,dating from 43,000 to 3,590 years *** newly generated data with previously published genomic information on aurochs as well as ancient/extant domestic cattle worldwide through genome ***ﬁndings revealed signiﬁcant genetic divergence between East Asian aurochs and their European,near Eastern,and African counterparts on the basis of both mitochondrial and nuclear genomic ***,we identiﬁed evidence of geneﬂow from East Asian aurochs into ancient and present-day taurine cattle,suggesting their potential role in facilitating the environmental adaptation of domestic cattle.

关键词： East Asian aurochs Ancient DnA Cattle domestication Adaptive introgression

Yb1-xCaxCd2Sb2多晶材料低温热电性能研究

在线全文

学校读者我要写书评

暂无评论

Yb1-xCaxCd2Sb2多晶材料低温热电性能研究

VSAT系统改进隔离型随机n叉树形冲突分解算法研究

第15届全国晶体生长与材料学术会议

作者：操齐高张辉汤美波陈昊鸿杨昕昕 Grin yuri 赵景泰中国科学院透明光功能无机材料重点实验室上海硅酸盐研究所中国科学院研究生院 Max-Planck-Institut für Chemische Physik fester Stoffe Nthnitzer Str.4001187 Dresden(Germany)

采用熔融法结合放电等离子烧结的方法合成了P型Zintl相Yb1-xCaxCd2Sb2(x=0.2,0.4,0.5,0.6,0.8)多晶固溶体,探索了Ca取代Yb对其热电性能的影响规律。测试了块体材料的低温(2K～300K)电导率、Seebeck系数、热导率、质量热容量以及Hall系...

采用熔融法结合放电等离子烧结的方法合成了P型Zintl相Yb1-xCaxCd2Sb2(x=0.2,0.4,0.5,0.6,0.8)多晶固溶体,探索了Ca取代Yb对其热电性能的影响规律。测试了块体材料的低温(2K～300K)电导率、Seebeck系数、热导率、质量热容量以及Hall系数。结果表明:所制备的Yb1-xCaxCd2Sb2固溶体为P型电传导。随着Ca取代量x的增加,化合物室温载流子浓度逐渐减小,电导率逐渐降低,Seebeck系数逐渐增大。热导率随x的变化规律不明显,但是当x=0.5,固溶体在整个温度范围内都有最低的热导率。固溶体Yb1-xCaxCd2Sb2的热电优值ZT随x增加而降低。

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

计算机科学 2003年第9期30卷 103-105页

作者：李莉彭云帆刘丽梅云利军云南师范大学计算机科学系昆明650092 云南英茂通信股份有限公司昆明650228

1引言VSAT卫星通信网作为高新技术,已成为20世纪80年代以来卫星通信发展的一个重要领域.多址接入协议是VSAT网的关键技术之一,关系着网络的运行效率.

关键词：卫星通信 VSAT系统冲突分解算法隔离型随机n叉树形卫星信道

心肌灌注显像和123I-BMIPP代谢显像预测扩张性心肌病患者再同步化治疗的预后

在线全文

学校读者我要写书评

暂无评论

中华核医学与分子影像杂志 2017年第7期37卷 443-443页

作者：唐军 Konstantin V.Zavadovsky Marina O.Gulya yuri B.Lishmanov Denis I.Lebedev 苏州大学附属第二医院核医学科 Department of nuclear Medicine Federal State Budgetary Scientific InstitutionResearch Institute for Cardiology national Research Tomsk Polytechnic University

目的探究特发性扩张型心肌病（DCM）患者的左心室心肌灌注和脂肪酸代谢状况,并确定核素显像对心脏再同步化治疗（CRT）疗效的预测价值。方法 63例DCM伴严重心力衰竭患者[纽约心脏协会（nYHA）分级ⅡⅢ级]进入本研究。CRT之前,所有患者均... 详细信息

目的探究特发性扩张型心肌病（DCM）患者的左心室心肌灌注和脂肪酸代谢状况,并确定核素显像对心脏再同步化治疗（CRT）疗效的预测价值。方法 63例DCM伴严重心力衰竭患者[纽约心脏协会（nYHA）分级ⅡⅢ级]进入本研究。CRT之前,所有患者均行99Tcm-MIBI和123I-β-甲基-碘苯基十五烷酸(123I-BMIPP)显像,以评价心肌灌注和脂肪酸代谢状况。CRT前和CRT后6个月,所有患者均行超声心动图检查,以了解心脏的血流动力学情况。结果 CRT后6个月,患者被分成2组。第1组患者治疗有效,其左心室收缩末期容积（LVESV）下降≥15%（n=39）;第2组患者治疗效果差,其LVESV下降n=24）。CRT前,2组患者的左心室泵血功能差异没有统计学意义,而心肌灌注显像放射性缺损区的占比[7.4%（5.9%,13.2%）和11.8%（8.8%,16.2%）,P<0.05]和代谢显像放射性缺损区的占比[7.4%（4.4%,14.7%）和8.8%（8.8%,17.6%）,P<0.05]差异有统计学意义。与心肌灌注显像相比,代谢显像在预测CRT疗效上有更好的诊断效能（ROC曲线下面积:代谢显像为0.722,灌注显像为0.612）。代谢显像中放射性缺损区占比的最佳阈值为7.35%时,其预测CRT疗效的灵敏度和特异性分别为77.8%和66.7%。结论心肌脂肪酸代谢显像在预测扩张型心肌病患者CRT疗效上有一定的价值。

关键词：扩张型心肌病心肌显像心脏再同步化治疗