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Divergence of trafficking and polarization mechanisms for PIN auxin transporters during land plant evolution

Plant Communications 2024年第1期5卷 116-129页

作者： Han Tang Kuan-ju lu YuZhou Zhang You-Liang Cheng Shih-Long Tu Jiri Friml Institute of Science and Technology Austria(ISTA) Am Campus 13400 KlosterneuburgAustria Graduate Institute of Biotechnology National Chung Hsing UniversityNo.145Xingda Rd.South Dist.Taichung 40227TaiwanR.O.C College of Life Sciences Northwest A&F UniversityShaanxiYanglingChina Institute of Plant and Microbial Biology Academia Sinica128 Sec.2Academia RdNankangTaipei 11529TaiwanR.O.C Present address:Graduate Institute of Biochemistry National Chung Hsing UniversityNo.145Xingda Rd.South Dist.Taichung 40227TaiwanR.O.C

The phytohormone auxin,and its directional transport through tissues,plays a fundamental role in the development of higher *** polar auxin transport predominantly relies on PIN-FORMED(PIN)auxin ***,PIN polarization is crucial for development,but its evolution during the rise of morpho-logical complexity in land plants remains ***,we performed a cross-species investigation by observing the trafficking and localization of endogenous and exogenous PINs in two bryophytes,Physco-mitrium patens and Marchantia polymorpha,and in theflowering plant Arabidopsis *** confirmed that the GFP fusion did not compromise the auxin export function of all examined PINs by using a radioac-tive auxin export assay and by observing the phenotypic changes in transgenic *** PINs polarize tofilamentous apices,while exogenous Arabidopsis PINs distribute symmetrically on the membrane in both *** the Arabidopsis root epidermis,bryophytic PINs have no defined *** interference revealed a strong cytoskeletal dependence of bryophytic but not Arabidopsis PIN *** divergence of PIN polarization and trafficking is also observed within the bryophyte clade and between tissues of individual *** results collectively reveal the divergence of PIN traf-ficking and polarity mechanisms throughout land plant evolution and the co-evolution of PIN sequence-based and cell-based polarity mechanisms.

关键词： Arabidopsis evolution Marchantia Physcomitrium PINs polarization protein trafficking

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Atomic-Scale Insights into Damage Mechanisms of GGr15 Bearing Steel Under Cyclic Shear Fatigue

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1265-1278页

作者： Qiao-Sheng Xia Dong-Peng Hua Qing Zhou Ye-Ran Shi Xiang-Tao Deng Kai-ju lu Hai-Feng Wang Xiu-Bing Liang Zhao-Dong Wang State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an710072China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819China Defense Innovation Institute Academy of Military ScienceBeijing100071China

Alternating shear stress is a critical factor in the accumulation of damage during rolling contact fatigue,severely limiting the service life of ***,the specific mechanisms responsible for the cyclic shear fatigue damage in bearing steel have not been fully *** the mechanical response and microstructural evolution of a model GGr15 bearing steel under cyclic shear loading are investigated through the implementation of molecular dynamics *** samples undergo 30 cycles under three different loading conditions with strains of 6.2%,9.2%,and 12.2%,*** findings indicate that severe cyclic shear deformation results in early cyclic softening and significant accumulation of plastic damage in the bearing ***,samples subjected to higher strain-controlled loading exhibit higher plastic strain energy and shorter fatigue ***,strain localization is identified as the predominant damage mechanism in cyclic shear fatigue of the bearing steel,which accumulates and ultimately results in fatigue ***,simulation results also revealed the microstructural reasons for the strain localization(e.g.,BCC phase transformation into FCC and HCP phase),which well explained the formation of white etching *** study provides fresh atomic-scale insights into the mechanisms of cyclic shear fatigue damage in bearing steels.

关键词： Cyclic shear fatigue Molecular dynamic simulation Bearing steels Plastic damage accumulation

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探讨IOTA、GI-RADS及O-RADS在附件肿瘤良恶性鉴别诊断中的价值

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中华医学超声杂志（电子版） 2024年第5期21卷 484-490页

作者：卢菊赵胜范建华高艳多湖北省妇幼保健院超声科武汉430000

目的探讨国际卵巢肿瘤分析(IOTA)简单法则、超声妇科影像报告与数据系统(GI-RADS)分类及卵巢-附件影像报告和数据系统(O-RADS)分类在附件肿瘤良恶性鉴别诊断中的价值。方法回顾性分析2018年1月至2023年2月湖北省妇幼保健院收治的237例... 详细信息

目的探讨国际卵巢肿瘤分析(IOTA)简单法则、超声妇科影像报告与数据系统(GI-RADS)分类及卵巢-附件影像报告和数据系统(O-RADS)分类在附件肿瘤良恶性鉴别诊断中的价值。方法回顾性分析2018年1月至2023年2月湖北省妇幼保健院收治的237例附件肿瘤患者(单侧/双侧)(共277个肿瘤),其中恶性肿瘤138个,良性肿瘤139个,均在术前行超声检查并经术后病理证实。由2名高年资医师共同对所有肿瘤行IOTA简单法则、GI-RADS和O-RADS分类,另一名医师将分类结果与病理结果进行对照,通过受试者操作特征(ROC)曲线分别计算出IOTA简单法则、GI-RADS分类及O-RADS分类在附件肿瘤良恶性鉴别诊断中的敏感度、特异度、阳性预测值、阴性预测值及曲线下面积(AUC)。采用Delong检验比较3种诊断方法的诊断效能。结果IOTA简单法则在附件肿瘤良恶性鉴别诊断中的敏感度为99.3%,特异度为87.8%,AUC为0.935(95%可信区间:0.902~0.969),阳性预测值为88.96%,阴性预测值为99.19%;GI-RADS分类(取最佳截断值≥4类时)在附件肿瘤良恶性鉴别诊断中的敏感度为87.0%,特异度为90.6%,AUC为0.910(95%可信区间:0.877~0.943),阳性预测值为77.40%,阴性预测值为99.00%;O-RADS分类(取最佳截断值≥4类时)在附件肿瘤良恶性鉴别诊断中的敏感度为96.4%,特异度为90.6%,AUC为0.980(95%可信区间:0.967~0.994),阳性预测值为91.22%,阴性预测值为96.18%。IOTA简单法则与GI-RADS分类之间AUC比较,差异无统计学意义(P>0.05),O-RADS分类与IOTA简单法则、GI-RADS分类之间AUC比较,差异具有统计学意义(Z=5.09、3.06,P=0.003、0.002)。结论在附件肿瘤良恶性鉴别诊断中,O-RADS分类(当取最佳截断值≥4类时)的诊断效能最高,IOTA简单法则与GI-RADS分类(当取最佳截断值≥4类时)诊断效能相当,均较O-RADS分类低。

关键词：卵巢肿瘤国际卵巢肿瘤分析卵巢-附件影像报告和数据系统超声妇科影像报告与数据系统

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Conductive Au nanowires regulated by silk fibroin nanofibers

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Frontiers of Materials Science 2014年第1期8卷 102-105页

作者： Bo-ju DONG Qiang lu National Engineering Laboratory for Modern Silk College of Textile and Clothing Engineering Soochow University Suzhou 215123 China

Conductive Au-biopolymer composites have promising applications in tissue engineering such as nerve tissue regeneration. In this study, silk fibroin nanofibers were formed in aqueous solution by regulating silk self-assembly process and then used as template for Au nanowire fabrication. We performed the synthesis of Au seeds by repeating the seeding cycles for several times in order to increase the density of Au seeds on the nanofibers. After electroless plating, densely decorated Au seeds grew into irregularly shaped particles following silk nanofiber to fill the gaps between particles and finally form uniform continuous nanowires. The conductive property of the Au-silk fibroin nanowires was studied with current-voltage （I-V） measurement. A typical ohmic behavior was observed, which highlighted their potential applications in nerve tissue regeneration.

关键词： silk Au nanowire electrical conductivity biological device

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State Transitions of Black Hole Accretion Flows

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Chinese Physics Letters 2001年第9期18卷 1294-1296页

作者： lu ju-Fu PAN Liu-Bin Department of Physics Xiamen UniversityXiamen 361005 Center for Astrophysics University of Science and Technology of ChinaHefei 230026

We show that the thermal instability-triggered transition from the state of the Shakura-Sunyaev disc to the state of the advection-dominated accretion flow is possible for black hole accretion flows composed of two-te... 详细信息

关键词： accretion dominated Transition

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Causal Viscosity in Global Dynamics of Advection-Dominated Accretion Flows Around Black Holes

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Chinese Physics Letters 2000年第2期17卷 151-153页

作者： GU Wei-Min lu ju-Fu Center for Astrophysics University of Science and Technology of ChinaHefei 230026 National Astronomical Observatories Chinese Academy of Sciences

We modify the viscosity to disappear inside the sonic point in the advection-dominated accretion flows (ADAF's) around black holes, and obtain the causally connected, physically self-consistent ADAF-thin disk solutions. Such global solutions differ from previous ones in quantitative details. The results show that the range of variation for the value of the outer boundary Rout is very large, from 30Rg to 106Rg. There is a narrow region for which the rotating motion of the flow is super-Keplerian in each global solution. An example global solution with the causal viscosity is given explicitly, for which R8=2.28Rg and j=1.7564(cRg).

关键词： viscosity global details

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Radial Shocks in Advection-Dominated Accretion Flows Around Black Holes

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Chinese Physics Letters 2001年第1期18卷 148-150页

作者： GU Wei-Min lu ju-Fu Center for Astrophysics University of Science and Technology of ChinaHefei 230026 National Astronomical Observatories Chinese Academy of SciencesBeijing 100012 Department of Physics Xiamen UniversityXiamen 361005

We have solved the set of equations for advection-dominated accretion flows(ADAFs)around black holes,and found a new class of global solutions with standing radial ***α-X-type shocks may exist in flows when 0≤αlution is given explicitly,for whichα=0.01 andγ=*** shock position is R_(sh)=8.68R_(g),which is between the inner sonic point R_(s1)=3.88R_(g) and the outer sonic point R_(s2)=85.92R_(g).

关键词： flows outer explicitly

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Some Problems of Recycling Industrial Materials

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Journal of Iron and Steel Research International 2008年第5期15卷 37-41,55页

作者： CAI Jiu-ju lu Zhong-wu YUE Qiang SEPA Key Laboratory on Eco-Industry Northeastern University Shenyang 110004 Liaoning China

The industrial system should learn from the natural ecosystem. The resource utilization efficiency should be increased and the environmental load should be decreased, depending on the materials recycled in the system. The classification of industrial materials from the viewpoint of large-scale recycling was stated. Recycling of materials, on three different levels, was introduced in the industrial system. The metal flow diagram in the life cycle of products, in the case of no materials recycled, materials partially recycled, and materials completely recycled, was given. The natural resource conservation and the waste emission reduction were analyzed under the condition of materials completely recycled. The expressions for the relation between resource efficiency and material recycling rate, and the relation between eco-efficiency and material recycling rate were derived, and the curves describing the relationship between them were protracted. The diagram of iron flow in the life cycle of iron and steel products in China, in 2001, was given, and the iron resource efficiency, material recycling rate, and iron eco-efficiency were analyzed. The variation of iron resource efficiency with the material recycling rate was analyzed for two different production ratios.

关键词： recycling industrial material product life cycle resource efficiency eco-efficiency material recycling rate

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Strange star candidates revised within a quark model with chiral mass scaling

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Research in Astronomy and Astrophysics 2011年第4期11卷 482-490页

作者： Ang Li Guang-Xiong Peng ju-Fu lu Department of Physics and Institute of Theoretical Physics and Astrophysics Xiamen University Xiamen 361005 China Department of Physics Graduate University Chinese Academy of Sciences Beijing 100049 China

We calculate the properties of static strange stars using a quark model with chiral mass scaling. The results are characterized by a large maximum mass （-1.6 M⊙） and radius （-10km）. Together with a broad collection of modern neutron star models, we discuss some recent astrophysical observational data that could shed new light on the possible presence of strange quark matter in compact stars. We conclude that none of the present astrophysical observations can prove or confute the existence of strange stars.

关键词： dense matter -- elementary particles -- equation of state -- stars: inte-riors

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Energetic Argument for Bimodal Black Hole Accretion discs

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Chinese Physics Letters 2002年第10期19卷 1562-1564页

作者： Lin Yi-Qing lu ju-Fu Gu Wei-Min Department of Physics Xiamen University Xiamen 361005 Service d'Astrophysique CEA/DSM/DAPNIA CE-Saclay 91191 Gif-sur-Yvette France

Based on simple energetic considerations, we show that two crucial ingredients of bimodal black hole accretion discs, namely the sonic point and the transition radius, can be determined from the disc constant paramete... 详细信息

关键词： Gravitation

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