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Surface modifications of biometallic commercially pure Ti and Ti–13Nb–13Zr alloy by picosecond Nd:YAG laser

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International Journal of Minerals,Metallurgy and Materials 2021年第2期28卷 285-295页

作者： Slađana Laketić Marko Rakin milošmomčilović Jovan Ciganović Đorđe Veljović Ivana Cvijović-Alagić Vinča Institute of Nuclear Sciences University of BelgradeP.O.Box 52211001 BelgradeSerbia Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia

The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti–13Nb–13Zr alloy in air and argon atmospheres were studied under different laser output energy *** the interaction of laser irradiation with the investigated materials,a part of the energy was absorbed on the target surface,influencing surface *** beam interaction with the target surface resulted in various morphological alterations,resulting in crater formation and the presence of microcracks and hydrodynamic ***,different chemical changes were induced on the target materials’surfaces,resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy *** the high energy absorption at the site of interaction,the dimensions of the surface damaged area ***,surface roughness *** appearance of surface oxides also led to the increased material hardness in the surface-modified *** chemical and morphological changes were pronounced after laser irradiation of the Ti–13Nb–13Zr alloy surface.

关键词： commercially pure titanium Ti-13Nb-13Zr alloy surface modification Nd:YAG laser laser-induced damage hard oxidized surface

Structural Integrity Assessment of Welded Pressure Vessel Produced of HSLA Steel

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Journal of Iron and Steel Research International 2011年第S1期18卷 888-892页

作者： Milovi Ljubica Vuherer Tomaz Zrili milorad momilovi Dejan Jakovi Dragan Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Welding Laboratory University of MariborFaculty of Mechanical EngineeringSmetanova 17Maribor 2000Slovenia Institute for Testing of Materials IMS Blvd.vojvode Mi i a 4311000 BelgradeSerbia

Welded joint is a critical region of a welded *** operational safety of welded pressure equipment mostly depends on the behaviour of loaded *** of welded structure is dependent on the properties of welded joint as whole and of its constituents (parent metal,heat affected zone and weld metal).In this paper the behaviour of welded joint cracked constituents is *** integrity assessment procedure is applied to welded pressure vessel produced of high-strength low-alloyed steel,operating at-40°C,comparing crack driving force and material crack resistance,using path-independent contour J-integral as fracture mechanics *** comparison of crack driving force,expressed by J-integral and material resistant curve,J-R curve,provide the possibility to determine the extent of the stable crack as well as the critical crack size for its final fast propagation and also to assess the structural integrity of a cracked pressure vessel.

关键词： pressure vessel residual strength J integral crack driving force

Laser processing effects on Ti−45Nb alloy surface,corrosive and biocompatible properties

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Transactions of Nonferrous Metals Society of China 2024年第8期34卷 2533-2551页

作者： I.CVIJOVIĆ-ALAGIĆ S.LAKETIĆ M.momČiloviĆ J.CIGANOVIĆ Đ.VELJOVIĆ J.BAJAT V.KOJIĆ M.RAKIN Vinča Institute of Nuclear Sciences-National Institute of the Republic of Serbia University of BelgradeP.O.Box 52211001 BelgradeSerbia Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Oncology Institute of Vojvodina Faculty of MedicineUniversity of Novi SadPut Dr Goldmana 421204 Sremska KamenicaSerbia

The Ti−45Nb(wt.%)alloy properties were investigated in relation to its potential biomedical *** surface modification was utilized to improve its performance in biological *** a result of the laser treatment,(Ti,Nb)O scale was formed and various morphological features appeared on the alloy *** electrochemical behavior of Ti−45Nb alloy in simulated body conditions was evaluated and showed that the alloy was highly resistant to corrosion deterioration regardless of additional laser surface modification ***,the improved corrosion resistance after laser treatment was evident(the corrosion current density of the alloy before laser irradiation was 2.84×10^(−8)A/cm^(2),while that after laser treatment with 5 mJ was 0.65×10^(−8)A/cm^(2))and ascribed to the rapid formation of a complex and passivating bi-modal surface oxide *** cytotoxicity and effects of the Ti−45Nb alloy laser surface modification on the MRC-5 cell viability,morphology,and proliferation were also *** Ti−45Nb alloy showed no cytotoxic ***,cells showed improved viability and adherence to the alloy surface after the laser irradiation *** highest average cell viability of 115.37%was attained for the alloy laser-irradiated with 15 *** showed that the laser surface modification can be successfully utilized to significantly improve alloy performance in a biological environment.

关键词： Ti−45Nb alloy laser surface scanning electrochemical properties biocompatibility cell morphology

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One size does not fit all: Refining zircon provenance interpretations via integrated grain shape, geochronology, and Hf isotope analysis

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Geoscience Frontiers 2023年第4期14卷 230-244页

作者： Gisela Gartmair milo Barham Christopher L.Kirkland Timescales of Mineral Systems Group School of Earth and Planetary SciencesCurtin UniversityGPO Box U1987PerthWA 6845Australia

Sediment provenance studies commonly utilize isotopic signatures to resolve detrital mineral sources and ***,non-unique ages and geochemical characteristics across geographically distinct crystalline source regions can lead to significant ambiguities in mineral provenance *** ambiguity is apparent in southern Australia’s Cenozoic Eucla Basin,which hosts world-class heavy mineral sand ***,new Hf isotope data are provided from four heavy mineral prospects(N=8,n=844[N=samples,n=grains]).Zircon grain shape data are also presented for a suite of detrital Eucla Basin samples(N=22,n=35,604)and the basin’s underlying basement,the Coompana Province(N=13,n=824).The data are integrated with published detrital and non-detrital primary zircon data to investigate the efficacy of grain shape analysis to better resolve the basin’s mineral *** Hf isotope compositions indicate a primary Mesoproterozoic juvenile source for zircon melts(~1250-1000 Ma,-2.5~+5)with additional contributions from a range of juvenile to evolved late Archean to Phanerozoic-aged zircon bearing magmas(-28.0+11).U-Pb geochronology and Hf isotopes are incapable of differentiating Mesoproterozoic-aged source rocks bounding the region for the majority of heavy mineral deposits analyzed as potential sources express overlapping crystallization ages and similarities in Hf-isotope ***,distinct zircon grain shapes(i.e.,perimeter,major axis and circularity)facilitate improved differentiation across these Mesoproterozoic *** of U-Pb age,Hf isotope and shape data implicate the underlying Madura and Coompana provinces as dominant sediment sources for Eucla Basin detritus aged~1400-1000 *** lack of direct sediment pathways between the underlying basement provinces and placer sediments analyzed demonstrates the significance of zircon reworking from intermediate sedimentary basins in the formation of the economically significa

关键词： Isotope fingerprinting Grain shape analysis Sediment provenance Sediment routing Heavy mineral sands Eucla Basin

Synchronous endometrial and ovarian cancer: A case report

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World Journal of Clinical Cases 2023年第18期11卷 4341-4349页

作者： DianaŽilovič RūtaČiurlienė EvelinaŠidlovska Ieva Vaicekauskaitė Rasa Sabaliauskaitė Sonata Jarmalaitė Department of Oncogynecology National Cancer InstituteVilnius 08406Lithuania Institute of Biosciences Vilnius UniversityVilnius 10222Lithuania Laboratory of Clinical Oncology National Cancer InstituteVilnius 08406Lithuania National Center of Pathology Affiliate of Vilnius University Hospital Santaros KlinikosVilnius 08406Lithuania Laboratory of Genetic Diagnostic National Cancer InstituteVilnius 08406Lithuania

BACKGROUND Synchronous endometrial and ovarian cancer(SEOC)is a rare genital tract *** diagnosis is crucial for the disease management since prognosis and overall survival differ substantially between metastatic endometrial cancer(EC)or *** this review we present 2 cases of women who were diagnosed with SEOC,and discuss the clinical characteristic of SEOC,diagnostic and molecular profiling *** generation sequencing of 10 gene panel was performed on cancerous tissue and uterine lavage *** SUMMARY In our report patients with SEOC had endometroid type histology with early stage and low-grade histology for both EC and *** underwent surgical treatment and ***-generation sequencing of 10 gene-panel identified CTNNB1,PIK3CA,and PTEN gene mutations in ovarian tissue in one case,while none of these genes were mutated in other *** review in support to our data suggest a good prognosis for SEOC diagnosed at early *** Accurate diagnosis of SEOC is essential for disease management and gene mutation analysis can be helpful as a complementary diagnostic and prognostic tool.

关键词： Ovarian cancer Endometrial cancer Synchronous primary cancer Uterine lavage Case report

A Methodology for Vulnerability Assessment of Cultural Heritage in Extreme Climate Changes

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International Journal of Disaster Risk Science 2024年第3期15卷 404-420页

作者： Riccardo Cacciotti Alessandro Sardella milošDrdácký Alessandra Bonazza Institute of Theoretical and Applied Mechanics Czech Academy of Sciences19000PragueCzech Republic Institute of Atmospheric Sciences and Climate National Research Council of Italy40129BolognaItaly Department of Environmental and Prevention Sciences University of Ferrara44121FerraraItaly Istituto Superiore per la Protezione e la Ricerca Ambientale 00144RomaItaly

Vulnerability evaluation plays a key role in risk assessment and reduction and is essential for defining strategies for climate change adaptation and *** dealing with the safeguarding of cultural heritage at risk,we are still far from adopting and applying an agreed methodology for vulnerability *** the aim to support practitioners,heritage managers,and policy and decision makers to undertake actions that address the protection of cultural heritage at risk,the methodology set up in the framework of the Interreg Central Europe STRENCH is illustrated and discussed *** on three major requirements(susceptibility,exposure,and resilience)and a continuous consultation with local stakeholders,the proposed methodology is applicable for evaluating the vulnerability of built heritage and cultural landscape exposed to hydrometeorological hazards,such as heavy rains,floods,and *** results obtained through its validation on 15 case studies from seven Central European regions are shown to underline the strengths and limitations of the methodological *** consultation with local stakeholders was fundamental for the definition of the criteria/subcriteria and related values for the assessment of the *** to further sites in other contexts would surely contribute to strengthening the reliability of the methodological approach.

关键词： Built and natural heritage Exposure Heritage vulnerability Resilience Risk management Susceptibility

Assessing volcanic origins within detrital zircon populations——A case study from the Mesozoic non-volcanic margin of southern Australia

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Geoscience Frontiers 2019年第4期10卷 1371-1381页

作者： milo Barham Christopher L. Kirkland Martin Danisík Centre for Exploration Targeting (CET)- Curtin Node The Institute for Geoscience Research (TIGeR)School of Earth and Planetary SciencesCurtin UniversityGPO Box U1987PerthWA 6845Australia GeoHistory Facility John de Laeter CenterCurtin UniversityGPO Box U1987PerthWA 6845Australia

Detrital zircon U/Pb geochronology is a common tool used to resolve stratigraphic questions,inform basin evolution and constrain regional geological *** favourable circumstances,detrital zircon populations can contain a concomitant volcanic contribution that provides constraints on the age of ***,for non-volcanic settings,proving isolated detrital zircon grains are from contemporaneous and potentially remote volcanism is *** we use same grain(U-Th)/He thermochronology coupled with U/Pb geochronology to identify detrital zircon grains of contemporary volcanic origin.(U-Th)/He ages from Cretaceous zircon grains in southern Australia define a single population with a weighted mean age of 104±6.1 *** from zircon U/Pb geochronology and palynology(~104.0-107.5 Ma).Detrital zircon trace-element geochemistry is consistent with a continental signature for parent rocks and coupled with detrital grain ages,supports derivation from a>2000 km distant early-to mid-Cretaceous Whitsunday Volcanic Province in eastern ***,integration of biostratigraphy,single-grain zircon double-dating(geochronology and thermochronology)and grain geochemistry enhances fingerprinting of zircon source region and transport history.A distal volcanic source and rapid continental-scale transport to southern Australia is supported here.

关键词： Provenance Grain history Thermochronology Geochronology Source to sink Trace-elements

The Islamic Religion in Course Curriculums of High School History Textbooks in the Republic of Macedonia

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Cultural and Religious Studies 2024年第4期12卷 210-223页

作者： Zećir Ramčilović Ss Cyril and Methodius University SkopjeRepublic of Macedonia

History textbooks can and primarily should contribute to the strengthening of students’awareness of universal human ***,history textbooks can also deepen the divisions,prejudices,and uncritical attitudes,contrary to the goals of *** youth population,which is still building and creating their point of view towards the world is the main group in the education *** learning period,in the elementary,as well as in the secondary education is of utmost importance for the development of every *** that end,history,through the contents of the past largely shapes our perceptions of every individual,ourselves,and the *** we are living in a multiethnic and multi-confessional society,I have decided to conduct an analysis of the teaching contents of high school textbooks related to *** reason for the analysis is the role of religion in the formation of Balkan nations,which have made it one of the key elements of their national *** is often given the role of raising and strengthening the national awareness,patriotism,as well as the country homogeneity,which most often leads to forming prejudices,divisions,and discrimination towards people of minority *** large volume of content related to the religion,and also the mere fact that Muslims are the second largest religion group in the population,I have decided to analyze the contents which are related only to the Islamic *** goal is to look for both the positive and negative sides of those contents in history textbooks in secondary schools,which are backed by state institutions that are supposed to take care of the development of competitive,creative,progressive,and ethically formed human *** critical review will give an additional impulse to the efforts of eliminating those parts of the teaching contents that create divisions and prejudices,especially in history textbooks,so that its studying can become the key factor in the building of trust

关键词： Islam religion students history textbooks education

History and present status of pulmonary metastasectomy in colorectal cancer

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World Journal of Gastroenterology 2014年第40期20卷 14517-14526页

作者： Tom Treasure Miel miloevi Francesca Fiorentino Joachim Pfannschmidt Clinical Operational Research Unit University College London London WC1E 6BT United Kingdom Clinic for Thoracic Surgery Institute for Pul-monary Diseases of Vojvodina University of Novi Sad Novi Sad 402920 Serbia Department of Cardiothoracic Surgery National Heart and Lung Institute Imperial College London W12 0NN United Kingdom HELIOS Klinikum Emil von Behring Lungenklinik Heckeshorn 14165 Berlin Germany

Clinical practice with respect to metastatic colorectal cancer differs from the other two most common cancers,breast and lung,in that routine surveillance is recommended with the specific intent of detecting liver and lung metastases and undertaking liver and lung resections for their *** trace the history of this approach to colorectal cancer by reviewing evidence for effectiveness from the 1950s to the present *** sources included published citation network analyses,the documented proposal for randomised trials,large systematic reviews,and meta-analysis of observational *** present consensus position has been adopted on the basis of a large number of observational studies but the randomised trials proposed in the 1980s and 1990s were either not done,or having been done,were not *** opinion is the mainstay of current practice but in the absence of randomised trials there remains a possibility of selection *** controlled trials(RCTs)are now routine before adoption of a new practice but RCTs are harder to run in evaluation of already established *** such trial is recruiting and shows that controlled trial are possible.

关键词： Colorectal cancer Metastasectomy Liver resection Pulmonary metastasectomy Oligometastatic state