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Direct visualization of postoperative aortobronchial fistula on computed tomography

World Journal of Radiology 2024年第8期16卷 337-347页

作者： Nanae Tsuchiya Hitoshi Inafuku satoko yogi Yuko Iraha Gyo Iida Mizuki Ando Takaaki Nagano Shotaro Higa Tatsuya Maeda Yuya Kise Kojiro Furukawa Koji Yonemoto Akihiro Nishie Department of Radiology Graduate School of Medical ScienceUniversity of the RyukyusOkinawa 903-0215Japan Department of Thoracic and Cardiovascular Surgery Graduate School of Medical ScienceUniversity of the RyukyusOkinawa 903-0215Japan Department of Biostatistics School of Health SciencesFaculty of MedicineUniversity of the RyukyusOkinawa 903-0215Japan

BACKGROUND Postoperative aortobronchial fistula(ABF)is a rare complication that can occur in 0.3%-5.0%of patients over an extended period of time after thoracic aortic *** visualization of the fistula via imaging is *** To investigate the relationship between computed tomography(CT)findings and the clinical signs/symptoms of ABF after thoracic aortic *** Six patients(mean age 71 years,including 4 men and 2 women)with suspected ABF on CT(air around the graft)at our hospital were included in this retrospective study between January 2004 and September *** CT findings included direct confirmation of ABF,peri-graft fluid,ring enhancement,dirty fat sign,atelectasis,pulmonary hemorrhage,and bronchodilation,and the clinical course were retrospectively *** proportion of each type of CT finding was *** ABF detection after surgery was found to have a mean and median of 14 and 13 years,*** signs and symptoms were asymptomatic in 4 patients,bloody sputum was found in 1 patient,and fever was present in 1 *** complications of ABF included graft infection in 2 patients and graft infection with hemoptysis in 2 *** the 6 patients,3 survived,2 died,and 1 was lost to *** locations of the ABFs were as follows:1 in the ascending aorta;1 in the aortic arch;2 in the aortic arch leading to the descending aorta;and 2 in the descending *** were directly confirmed by CT in 4/6(67%)***-graft dirty fat(4/6,67%)and peri-graft ring enhancement(3/6,50%)were associated with graft infection,endoleaks and pseudoaneurysms were associated with hemoptysis(2/6,33%).CONCLUSION Asymptomatic ABF after thoracic aortic surgery can be confirmed on chest *** is useful for the diagnosis of ABF and its complications.

关键词： Peri-graft air Aortobronchial fistula Chest computed tomography Postoperative Thoracic endovascular aortic repair Complication Thoracic aorta surgery

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Magnetic and structural properties of pure and Cr-doped haematite:α-Fe_(2-x)Cr_(x)O_(3)(0≤x≤1)

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Journal of Advanced Ceramics 2013年第4期2卷 360-369页

作者： Arvind yogi Dinesh VARSHNEY Materials Science Laboratory School of PhysicsVigyan BhawanDevi Ahilya UniversityKhandwa Road CampusIndore 452001India School of Physics Indian Institute of Science Education and ResearchThiruvananthapuram 695016India

Solid-state ceramic technique route is used for synthesizing Cr-doped haematiteaα-Fe_(2-x)Cr_(x)O_(3)(x=0,0.125,0.50 and 1)*** phase and corundum(Al2O_(3))type structure is revealed from the X-ray diffraction(XRD)*** Raman spectra ofαa-Fe_(2-x)Cr_(x)O_(3)illustrate seven phonon *** substitution of Cr(x=0,0.125,0.50 and 1)at Fe site,all Raman active modes are shifted to higher wave *** coercivity and remanence of Cr-doped haematites increase as x *** increased coercivity and remanence for Cr-doped samples can be attributed to their enhanced shape and magneto-crystalline *** observed isomer shiftδdvalues from room-temperature Mössbauer data clearly show the presence of ferric(Fe^(3+))and Cr^(3+)ions illustrating strong ferromagnetic ordering up to x=0.125 inaα-Fe_(2-x)Cr_(x)O_(3)haematite and weak ferromagnetic ordering foraα-Fe2-xCrxO_(3)(x>0.125)haematites.

关键词： magnetic materials X-ray diffraction(XRD) Raman spectra Mössbauer spectroscopy

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Structural,vibrational and magnetic properties of Ti substituted bulk hematite:-Fe_(2-x)Ti_(x)O_(3)

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Journal of Advanced Ceramics 2014年第4期3卷 269-277页

作者： Dinesh VARSHNEY Arvind yogi Materials Science Laboratory School of PhysicsVigyan BhawanDevi Ahilya UniversityKhandwa Road CampusIndore 452001India School of Physics Indian Institute of Science Education and ResearchThiruvananthapuram 695016India

Ti doped hematitea-Fe_(2-x)Ti_(x)O_(3)(x=0.0,0.0206 and 0.0344)samples are synthesized using solid-state ceramic route *** phase and corundum(Al_(2)O_(3))type structure is revealed from the X-ray diffraction(XRD)*** substitution of Ti at Fe site,all Raman active modes are shifted to higher wave *** additional feature of Eu(LO)mode at about 660 cm^(-1)is *** E_(u) mode frequency is decreased and pronounced systematically as a function of Ti doping,and it reaches a value of 658 cm^(-1)for x=*** coercivity Hc(remanence M_(r))for x=0.0,0.0206 and 0.0344 are determined to be 995 Oe(0.44 emu/mg),1404 Oe(0.00019 emu/mg)and 2023 Oe(0.00016 emu/mg),*** larger coercivity for Ti doped samples can be attributed to their enhanced shape and magneto-crystalline *** observed isomer shift(d)from room temperature Mössbauer data clearly shows the presence of ferric(Fe^(3+))and Ti^(4+)ordering ofa-Fe_(2-x)Ti_(x)O_(3)for x=0.0344.

关键词： magnetic materials X-ray diffraction(XRD) Raman spectra Mössbauer spectroscopy

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A review of self-assembled monolayers as potential terahertz frequency tunnel diodes

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Nano Research 2014年第5期7卷 589-625页

作者： Michael Celestin Subramanian Krishnan Shekhar Bhansali Elias Stefanakos D. yogi Goswami Department of Chemical & Biomedical Engineering University of South Florida Tampa FL 33520 USA Department of Electrical Engineering University of South Florida Tampa FL 33620 USA Department of Electrical & Computer Engineering Florida International University Miami FL 33174 USA

In this review, we describe the principles of the tunnel junction, self-assembled monolayer （SAM） application techniques, experimental testbed fabrication, and characterization of the films and devices. In addition, techniques for directed application, removal, and functionalization of the monolayers are discussed. Bottom-up fabrication techniques have seen increased attention because of their versatility and ease of use. These films see mechanical uses as surface modifiers and micro-scale lubricants. Advances in nanowatt electronics and ultra-low power sensors have opened up an energy harvesting niche for solutions which would have proven ineffective just some years ago. The focus of this study is the two- terminal junction which has potential applications in THz rectification for energy harvesting, medical imaging, and defense sensing. The quantum theory of operation behind these devices is touched on briefly---describing tunneling through the organic monolayers. Commentary on trends in research and potential future work are presented as well.

关键词： SAM/self-assembly quantum tunneling molecular rectification IR detection rectenna

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A review and future prospects of renewable energy in the global energy system

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电工电能新技术 2008年第1期27卷 55-62页

作者： D yogi GOSWAMI John ＆ Naida Ramil Professor Co-Director Clean Energy Research Center University of South Florida Tampa Florida 33620 USA

Global energy consumption in the last half century has rapidly increased and is expected to continue to grow over the next 50 years,however,with significant *** past increase was stimulated by relatively "cheap" fossil fuels and increased rates of industrialization in North America,Europe and Japan;yet while energy consumption in these countries continues to increase,additional factors make the picture for the next 50 years more *** additional complicating factors include China and India's rapid increase in energy use as they represent about a third of the world's population;the expected depletion of oil resources in the near future;and,the effect of human activities on global climate *** the positive side,the renewable energy(RE) technologies of wind,bio-fuels,solar thermal and photovoltaics(PV) are finally showing maturity and the ultimate promise of cost competitiveness.

关键词：可再生能源全球能源系统发展前景能源消费能源需求节能

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联合多种CT征象鉴别肺部病变良恶性的临床价值

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四川大学学报（医学版） 2013年第3期44卷 414-418页

作者：何威 Subhash yogi 程德云 Nikunj yogi 余建群李学明李婷陈代云苏雪英四川大学华西医院呼吸科成都610041 双流县第一人民医院马尼帕尔医学院普外科尼泊尔博克拉440387 四川大学华西医院放射科成都610041 双流县第一人民医院肿瘤科成都610200 四川大学华西医院病理科成都610041

目的拟定一种联合多种CT征象对肺部病变良恶性进行初步判断的标准,并与病理结果进行对照研究,评价其临床应用价值。方法纳入2010年3～4月入住我科胸部CT检查有异常征象者,根据患者影像学改变,按制定的判断标准进行初步判定,并行纤支镜... 详细信息

目的拟定一种联合多种CT征象对肺部病变良恶性进行初步判断的标准,并与病理结果进行对照研究,评价其临床应用价值。方法纳入2010年3～4月入住我科胸部CT检查有异常征象者,根据患者影像学改变,按制定的判断标准进行初步判定,并行纤支镜等检查,将判断的结果与病理结果进行对比分析。结果本组共纳入患者105例,其中病理明确诊断85例,以本研究制定的标准判断为恶性肿瘤者27例,良性者58例;判断为恶性者的27例中,病理诊断为恶性者22例,良性者5例;判断为良性者的58例中,病理诊断为恶性者3例,良性者55例;判断的准确率为90.59%,灵敏度为88.00%,特异度为91.67%。结论本研究制定的联合多种CT征象标准对于判断肺部病变良恶性有良好的临床应用价值。

关键词：肺癌CT 纤支镜病理对照

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Alkaline Earth (Ca) and Transition Metal (Ni) Doping on The Transport Properties Of Y1-Xcaxba2(Cu1-Yniy)3O7-δSuperconductors

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Journal of Modern Physics 2011年第8期2卷 922-927页

作者： Dinesh Varshney Arvind yogi Neha Dodiya Irfan Mansuri 不详

We report the results of dc resistivity, ac susceptibility, and thermopower study of partial substitution at Y (A site by Ca) and at Cu (B site by Ni) polycrystalline superconductors. The iodometric analysis reveals that the oxygen deficiency,δ,for YBa2Cu3O7-δ(S-I),Y0.9Ca0.1 Ba2Cu3O7-δ(S-II),Y0.8Ca0.2Ba2Cu3O7-δ(S-III) and Y0.9Ca0.1 Ba2(Cu0.99Ni0.01)3O7-δ(S-IV) samples are 0.16, 0.30, 0.39 and 0.29 respectively. The x-ray powder diffraction pattern indicates that all samples are in orthorhombic phase. The dc resistivity, ac susceptiblity and the thermopower measurements shows that the divalent Calcium doping at the trivalent Y site and transition metal Ni doping at Cu site causes a suppression of the superconducting transition temperature (Tc) from 89 to 81 K. The ac susceptibility confirms the ferromagnetic to antiferromagnetic phases at a defined Tc. The room temperature S value increases for Ca substituted YBa2Cu3O7-δwhile to that it decreases for Y0.9Ca0.1Ba2(Cu0.99Ni0.01)3O6.71. The above feature is an indicative of enhanced number of mobile holes for the Ca doped YBa2Cu3O7-δ, while to that the charge carrier density is reduced in simultaneous A (Ca) and B (Ni) site doped sample.

关键词： Y-Based Superconductors Doping Effect Transport Properties

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中高级阶段印尼留学生有标转折类复句习得研究

中高级阶段印尼留学生有标转折类复句习得研究

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作者： yogi BAGUS ADHIMAS（安康）华中师范大学

学位级别：硕士

汉语转折复句在语言运用中使用非常广泛,也是所有语言中十分重要的句子类型。但是,因为汉语的复句跟印尼语比起来复杂很多,而且语法规则有很多的不同,所以印尼留学生在学习汉语的时候,转折复句的应用经常出错。笔者在前人研究的基础上,... 详细信息

汉语转折复句在语言运用中使用非常广泛,也是所有语言中十分重要的句子类型。但是,因为汉语的复句跟印尼语比起来复杂很多,而且语法规则有很多的不同,所以印尼留学生在学习汉语的时候,转折复句的应用经常出错。笔者在前人研究的基础上,发放测试问卷,以问卷的语料作为分析的材料,用中介语和偏误分析理论作为基础,利用对比分析、统计分析这些方法,对印尼中高级阶段留学生使用汉语有标转折复句进行研究。笔者先对比汉语复句和印尼语复句在定义、分类及使用的语法规则上有什么不一样,再分析语料里面留学生使用汉语转折复句的情况,对语料的使用率、正确率和偏误率进行统计分析。接下来,在偏误的复句中按照遗漏、误代、误加和错序四个方面进行分类和归纳,最后统计出印尼留学生偏误最多的类型,总结偏误的特点,分析出现这种偏误的背后原因。测试问卷有三种题型对不同的方面进行考察。造句题考察印尼留学生转折复句类型的输出特征和首要选择。翻译题考察印尼语翻译汉语的过程,是否受到母语的影响?哪一部分是正迁移?哪一部分是负迁移?最后,分析汉语教材《成功之路》全六册教材中,转折复句关系标记的出现形式和位置,对接下来的国别化汉语教材提出建议。

关键词：印尼留学生有标转折复句偏误分析

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Petrology,geochemistry,and crystal size distribution of the basaltic andesite-dacite association at ***,Central Java,Indonesia:Insights to magma reservoir dynamics and petrogenesis

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Acta Geochimica 2024年第5期43卷 838-855页

作者： Indranova Suhendro Endra Yuliawan Revina Fitri Zen Zulfa yogi Rahmawati Pandu Eka Priyana Sonna Diwijaya Muhammad Alsamtu Tita Sabila Pratama Suhartono Andre Jonathan Gammanda Adhny El Zamzamy Latief Department of Environmental Geography Faculty of GeographyUniversitas Gadjah MadaSekip Utara Jl.KaliurangBulaksumurYogyakarta 55281Indonesia Centre for Disaster Studies Universitas Gadjah MadaJl.Mahoni C-16BulaksumurYogyakarta 55281Indonesia

Ten rock samples consisting of one pyroclastic density current(PDC1)deposit,seven lava flows(LF1–7),and two summit lava domes(LD1,2)were studied to understand the petrogenesis and magma dynamics at *** stratigraphy is arranged as LF1,PDC1,LF2,LF3,LF4,LF5,LF6,LF7,LD1,and LD2;furthermore,these rocks were divided into two ***Ⅰ,observed in the oldest(LF1)sample,has poor MgO and high Ba/Nb,Th/Yb and *** remaining samples(PDC1–LD2)represent typeⅡ,characterized by high MgO and low Ba/Nb,Th/Yb and Sr *** suggest that type I is derived from AOC(altered oceanic crust)-rich melts that underwent significant crustal assimilation,while typeⅡoriginates from mantle-rich melts with less significant crustal *** early stage of typeⅡmagma(PDC1–LF3)was considered a closed system,evolving basaltic andesite into andesite(55.0–60.2 wt%SiO_(2))with a progressively increasing phenocryst(0.30–0.48φ_(PC))and decreasing crystal size distribution(CSD)slope(from-3.9 to-2.9).The evidence of fluctuating silica and phenocryst contents(between 55.9–59.7 wt%and 0.25–0.41φ_(PC),respectively),coupled with the kinked and steep(from-5.0 to-3.3)CSD curves imply the interchanging condition between open(i.e.,magma mixing)and closed magmatic systems during the middle stage(LF4–LF6).Finally,it underwent to closed system again during the final stage(LF7–LD2)because the magma reached dacitic composition(at most 68.9 wt%SiO_(2))with abundant phenocryst(0.38–0.45φ_(PC))and gentle CSD slope(from-4.1 to-1.2).

关键词： Sumbing Whole-rock geochemistry Petrogenesis Fractionation Magma mixing Crystal size distribution

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MONTHLY COACH

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国际服装技术 2006年第2期 52-57页

作者： Hideyo Fukuda（摄影） Tatsuhisa yogi（摄影） Ayako Yonaga Zhu Jie（翻译）

作为介绍每月COACH新品的连载栏目，这一次介绍丰富的春季新品！带你看看只要拿在手就能令你雀跃不已的可爱新品，让你感受来自COACH的春天气息！

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