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Relevant bibliographies by topics / Twinning

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Academic literature on the topic 'Twinning'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 June 2025

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Journal articles on the topic "Twinning"

1

Cui, Xiaoming, Zhengguang Wang, Zhilei Yu, et al. "Effect of twinning and Al–Nd phase on dynamic recrystallization in rolled Mg–Al–Zn–Nd alloy at the moderate strain rate." Materials Research Express 8, no. 12 (2021): 126506. http://dx.doi.org/10.1088/2053-1591/ac3c6f.

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Abstract The dynamic recrystallization of Mg–Al–Zn–Nd alloy during moderate strain rate rolling was studied using electron backscatter diffraction (EBSD) and an energy dispersive spectrometer (EDS). The results showed three kinds of twinnings produced in the alloy in the strain rate range of 4.2 s−1∼7.3 s−1, including { 10 1 ¯ 2 } extension twinning, { 10 1 ¯ 1 } contraction twinning, and 10 1 ¯ 1 − { 10 1 ¯ 2 } double twinning. The extension twinnings decreased gradually with the increase of strain rate. The dynamic recrystallization mechanisms during hot rolling under moderate strain rate conditions mainly include grain boundary nucleation, twinning nucleation, and secondary particle assistant nucleation. The dynamic recrystallization mechanism induced by twinning is mainly 10 1 ¯ 1 − { 10 1 ¯ 2 } double twinnings. In addition, the strain value near the Al–Nd phase and grain boundary is higher than in grain. The Al–Nd particles in Mg–Al–Zn–Nd alloy play an auxiliary nucleation effect on dynamic recrystallization during hot rolling deformation.

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2

Riese, Dorothee, Renate Reiter, Simon Lenhart, Benjamin Gröbe, and Stephan Grohs. "Dead or alive? Erfolgsbedingungen für europäische Städtepartnerschaften." integration 47, no. 3 (2024): 239–53. http://dx.doi.org/10.5771/0720-5120-2024-3-239.

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Town twinning comes with great expectations. Pursued after the Second World War as an instrument of reconciliation on the European continent, they are supposed to strengthen political and social cohesion in Europe. However, classic partnerships are undergoing changes. While some have died, others are used for new forms of cooperation. Is town twinning an outdated format? How can we capture and explain why some twinnings are very much “alive” while others “die”? Based on qualitative case studies in eight German cities, we identify institutional, actor-related and policy-related factors that contribute to the success or failure of town twinning as a form of horizontal Europeanization.

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Praharani, Lisa. "Factors Affecting Twinning and the Impacts of Twinning in Cattle." Indonesian Bulletin of Animal and Veterinary Sciences 29, no. 1 (2019): 13. http://dx.doi.org/10.14334/wartazoa.v29i1.1961.

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Efforts to increase cattle production can be done through increasing the population and productivity of cattle, one of which is through the birth of two offsprings per parent (twin). The incidence of twinning in cattle ranged 1-10%, and influenced by genetic/breed, parity, management, season of breeding. This paper presented factors and technology that increase twinning rate and the impacts of twin births in cattle. There are genetic and non genetic factors affecting twinning rate. Increased twin births can be done through some technologies such as selection, reproduction and management. The problems in twinnings are the high incidence of abortion, early embryonic loss, distochia, retained placenta, metabolic disorders, and ketosis resulting in longer calving interval. Intensive management to dam bearing twins can reduce the problems. Economically, the profits of twinning are different between beef and dairy cattle. Twin births give benefit to beef cattle farming through the increase in total weaning per cattle. The pros and cons of twin births occur in dairy cows farming, especially on milk production.

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Wang, Y. G., H. Q. Ye, L. Ximen, and K. H. Kuo. "A HREM study of nonbasal twinning and superlattices in ilmenite." Journal of Applied Crystallography 23, no. 2 (1990): 82–87. http://dx.doi.org/10.1107/s002188988901099x.

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The microstructures of natural ilmenite found in Panzhihua district, China, were examined by high-resolution electron microscopy (HREM). The [{\bar 1}2{\bar 1}0] structural images showed clearly the (10{\bar 1}1) nonbasal twinning which seems to be coincident with the [{\bar 1}012] rotation twinning. The superlattices with periodicities of 16.8 and 12.6 Å, respectively, as well as the unit-cell twinning related to the ordering of (10{\bar 1}1) multiple twinnings were observed. The superlattice resulting from the ordering arrangement of (10{\bar 1}1) stacking faults related to the slip systems suggested by Heuer [Philos, Mag. (1966), 13, 379–893] were also detected. Possible genetic aspects are considered.

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Li, Zhenrong, Chunlei Ma, Sugui Tian, Liqing Chen, and Xianghua Liu. "Deformation Mechanisms of Tandem Hot Rolled GH4169 Superalloy during Creep." High Temperature Materials and Processes 33, no. 1 (2014): 71–75. http://dx.doi.org/10.1515/htmp-2013-0024.

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AbstractBy means of direct aged treatment, creep property measurement and high resolution TEM microstructure observation, the deformation mechanisms of Tandem Hot Rolled GH4169 superalloy during creep are investigated. Results show that, after direct aging treatment, fine γ″ particles with different sizes and shapes dispersedly precipitate in the alloy, which is one of important factors for the alloy possessing good creep resistance. And the deformation mechanisms of the alloy are that the deformed twinnings with different orientations are activated on {111} plane by pole mechanism, thereinto, the twinning dislocation may continuously slip around a pole axis dislocation on the twinning planes when the applied stress exceeds the critical value, and the twinnings may multiply by the dislocation reactions and mutual indemnification. As creep goes on, the denser dislocations with single or double orientations slip in the different twinnings, which play an important role of coordinating the grain deformation to enhance the creep resistance of the alloy.

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Müllner, P., and A. E. Romanov. "Internal twinning in deformation twinning." Acta Materialia 48, no. 9 (2000): 2323–37. http://dx.doi.org/10.1016/s1359-6454(00)00025-2.

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7

Li, B., and X. Y. Zhang. "Twinning with zero twinning shear." Scripta Materialia 125 (December 2016): 73–79. http://dx.doi.org/10.1016/j.scriptamat.2016.07.004.

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8

O’Keeffe, Francis J., and George L. Mendz. "Twinning and Individuation: An Appraisal of the Current Model and Ethical Implications." Biology 14, no. 2 (2025): 104. https://doi.org/10.3390/biology14020104.

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Discourses on human embryo experimentation often refer to monozygotic twinning and individuation. A criterion to establish regulations that guide human embryo research proposes that individuation is achieved once the embryo ceases to have the potential for dividing into two or more viable entities at about 15 days of gestational age. This standard is based on an updated version of a developmental model initially proposed by George Corner. A fundamental problem with this approach is the model’s lack of sufficient evidence to explain adequately human embryo twinning and, consequently, to serve as a basis to establish appropriate ethical guidelines for embryo experimentation. In addition, subsequent formulations of Corner’s model added an extension of blastomere totipotency to different moments of gestation, without a proper scientific basis. The model is also challenged by monozygotic twinnings that result in placental and amniotic arrangements incompatible with Corner’s framework. Investigations into the physiology of fertilisation and of the zygote suggest that individuation may occur at a very early stage. An alternative description of monozygotic twinning may explain better sesquizygotic twinning events and serve to re-evaluate the individuation criterion. The study aims to investigate deficiencies in the embryology of this model and assess their ethical implications.

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9

Hall, Judith G. "Twinning." Lancet 362, no. 9385 (2003): 735–43. http://dx.doi.org/10.1016/s0140-6736(03)14237-7.

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Nespolo, Massimo. "Twinning in chalcostibite revisited." European Journal of Mineralogy 30, no. 5 (2018): 967–73. http://dx.doi.org/10.1127/ejm/2018/0030-2764.

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Dissertations / Theses on the topic "Twinning"

1

Ball, Elaine. "Frequency twinning in magnetrons." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337535.

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2

Tsakiris, V. "Deformation twinning in austenitic steels." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371586.

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3

Nam, John Preston J. S. "Twinning studies on YBCO thin films." *McMaster only, 2005.

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4

Ahsani, Sarang, and Majed Mahdi. "How to Succeed with an EU Twinning Project -A Case Study on a Twinning Project in Albania." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23041.

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During the term of 2010 we received a Minor Field Study scholarship from the Swedish International Development Cooperation Agency (Sida), which allowed us to do a two-month study in Tirana, Albania. The study examined one of Europe’s most common tools when it comes to assisting candidate countries, potential candidate countries, and neighbouring countries of the European Union: Twinning. The idea of Twinning is that the beneficiary country gets assistance from EU member state institutions in order to develop its own institutions, in terms of standards of quality and safety. We have observed a Twinning project structured in the form of a consortium between the Swedish Tax Agency and the French Tax Agency assisting the Albanian General Tax Directorate (GTD) in Tirana. The study highlights the relationship between the four different actors involved in the ongoing project (EU, Sweden, France and Albania) and Twinning as a working method. More specifically we investigated (A) the transition from an old to a new system and if any difficulties emerged in the process, (B) what necessary factors are needed for a successful Twinning project, and (C) how the actors’ different backgrounds affect the project. The result we gained from the field study shows that the transition towards a new system progresses well as long as the project follows the main principles of Twinning: partnership and cooperation. These two principles allow the Albanian GTD to direct the project and decide the direction of their Europeanization process. Twinning generates many positive aspects e.g. institutional understanding and friendship, and it brings the cooperating nations closer to each other. The difficulties that have emerged have been technical or when one of the actors has not followed the structure of the project. These difficulties are natural in the beginning of any project since structures and relations take time to establish. Three main qualities affect the outcome of this Twinning project: experience, flexibility and communication. Actors involved in the project have to be experienced, in form of personal as well as institutional experience. Besides, they have to be flexible since the project follows the development of society where unpredicted needs can emerge. Most importantly, communication has to be free from friction between the actors in order to maintain the partnership principle of Twinning. Our analysis shows that the outcomes of this Twinning project are mutually shaped between the actors involved. Therefore, the emphasis should be on personal abilities to mutually create a working structure that follows the principles of Twinning.

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Staroselsky, Alexander V. 1962. "Crystal plasticity due to slip and twinning." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/17450.

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Zhang, Qiwei. "Lattice Correspondence in Deformation Twinning in Magnesium." Thesis, University of Nevada, Reno, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10823956.

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<p> Due to their lightweight and high specific strength, magnesium and its alloys have a great potential for a variety of applications. However, compared to face-centered cubic (FCC) metals, magnesium has a limited number of easy slip modes which cannot accommodate the strain along the <i>c</i>-axis, and thus twinning in Mg is an important mechanism of plastic deformation. Although numerous theoretical and experimental studies have been conducted on twinning in magnesium for decades, the mechanisms have yet been understood clearly. There are major discrepancies between theoretical and experimental results. The mainstream models for deformation twinning cannot describe the twinning behavior correctly. </p><p> In deformation twinning, there is a one-to-one lattice correspondence between the parent and the twin lattices. Thus, this concept of lattice correspondence can be used to resolve the twinning mechanisms in hexagonal close-packed (HCP) metals, but the study of lattice correspondence in deformation twinning in HCP metals only remains on the mathematic level. The concept of lattice correspondence is difficult to be verified by experiments. However, molecular dynamics (MD) simulations can be used to examine lattice correspondence, by tracking the transformation of crystallographic planes of the parent lattice to the corresponding plane of the twin. Thus, twinning mechanisms can be better understood. </p><p> Although lattice correspondence is a key concept in deformation twinning, as of now, it has often been neglected in the studies of twinning. Consequently, the existing models are unable to account for the phenomena observed in experiments or precisely predict the twinning behavior in Mg, and the twinning mechanisms remain controversial. The purpose of this dissertation is to use molecular dynamics simulations to investigate, in great detail, lattice correspondence in the two major twinning modes, i.e. {101¯2}{101¯1¯} and {101¯1}{101¯2¯}, in pure Mg. Specific crystallographic planes of the parent are pre-selected and tracked during twinning, and the results are compared with the calculations based on the classical twinning theory. </p><p> The results obtained from the simulations indicate that, indeed, a unique lattice correspondence exists for each twinning mode. For {101¯2}{101¯1¯} twinning mode, the corresponding planes obtained in the simulations well agree with the crystallography-based calculations. However, in the simulations, no shear deformation is observed and the twin boundary is extremely incoherent. Lattice transformation is solely achieved by atomic shuffling and no twinning dislocations are involved. For {101¯1}{101¯2¯} twinning mode, although the twinning elements were correctly predicted by the classical theory, discrepancies are revealed between atomistic simulation results and the crystallography-based calculations. These results unambiguously demonstrate how important lattice correspondence analysis is in resolving twinning mechanisms in complex crystal structures.</p><p>

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7

Williams, Linda. "An investigation into twinning in molecular crystals." Thesis, University of Manchester, 1998. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639814.

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8

Wu, Chun-Hsien. "Energetic Considerations and Structural Characterization of Twinning in Nanowires." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/50638.

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Twins are a pair of adjoining crystal grains related to each other by a special symmetry. They are frequently observed in bulk materials and nanomaterials. The formation of twins is an important topic in materials science and engineering because it affects material behaviors such as plastic deformation of metals, yield strength, and band gap energy in nanoscale semiconductors. Because of these unique phenomena and properties that the twinning can bring to the materials, it is of interest to investigate the formation of twins. Our primary objective in this dissertation is to study twinning in nanowires. Both gold and platinum <111> oriented nanowires were fabricated by similar solution-phase chemical synthesis methods. High-resolution transmission electron microscopy and electron diffraction patterns were carried out to analyze the structures of the nanowires. Nanodiffraction was used to demonstrate twinning is a general structural feature of the growth of gold nanowires growing in a <111> direction. A model was proposed to explain the conditions under which twinning is energetically favored during nanowire growth. The model, which is based on a maximum rate hypothesis, considers the nanowire geometry and the relative surface and stacking fault energies and predicts twins should appear in gold nanowires but not in platinum nanowires, in agreement with experimental observations. During the structural characterization of gold nanowires, our interest is to resolve 3D structure of twinning. However, the structure of twinning in gold nanowires is very fine and the average spacing between twin boundaries is only 0.57nm (+/- 0.38 nm); therefore, regular 3D electron microscopy technique is unable to reconstruct these defected structures. Here we present a stereo vision technique to reconstruct 3D atomic non-periodic structures containing defects. The technique employs intrinsic atomic planes as epipolar planes to achieve the alignment accuracy needed to reconstruct a crystal with atomic resolution. We apply it to determine the 3D geometry and atomic arrangements of twinning in gold nanowire. In addition, an iterated cross-correlation algorithm was developed to analyze electron diffraction fully automatically to facilitate structural analysis of nanowires. A time-temperature-transformation diagram of platinum nanowires in chemical synthesis was determined to help optimize the fabrication process of the nanowires.<br>Ph. D.

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9

Garabedian, Berdj Hratchia. "The genetics of neural tube defects and twinning /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56978.

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Several investigators have suggested that "upper" neural tube defects (NTD's)--anencephaly, encephalocele, and thoracic spina bifida--are etiologically different from "lower" NTD's (lumbo-sacral spina bifida). This hypothesis was primarily based on the observations that the two types have different sex ratios and recurrence rates and that the NTD cases within one sibship are concordant for NTD type. In order to test this, the above figures were calculated in a sample of NTD probands from Montreal and Newfoundland. The findings were not consistent with the hypothesis. However, a previously unreported finding was observed: the frequency of twinning was significantly higher in the near relatives of upper NTD probands than in those of lower NTD probands or of controls. This curious association between upper NTD's and twinning may be explained by a familial factor predisposing to a delay early in development. This delay could also explain any differences observed in upper and lower NTD groups.

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Rahman, Khandaker Mezanur. "Mechanical behaviour of Twinning Induced Plasticity (TWIP) steels." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/14299.

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TWinning Induced Plasticity (TWIP) steels are single phase austenitic alloys that successfully combine the properties of high strength and ductility. Thus, TWIP steels are an ideal candidate material for applications where the absorption of energy is required, such as armour or automotive crash safety systems. The TWIP effect arises due to the formation of thin lenticular deformation twins during straining. These twins act as strong barriers to dislocation movement. This results in a dynamic grain refinement process, leading to an increasing work hardening capacity and superior ductility. This thesis presents work carried out to develop our understanding of the mechanical properties and the micromechanics of twinning in a TWIP steel during deformation. In-situ X-ray synchrotron diffraction loading experiments were conducted to investigate the evolution of deformation texture, lattice strain and peak width during deformation at quasi- static strain rates. The lattice strain evolution indicated that twinning occurs very early during deformation and remarkably initiates before the macroscopic yield point. In addition, the in-situ experimental observations were modelled successfully using an elasto-plastic self consistent (EPSC) model. The armour capabilities of the material was investigated using Hopkinson pressure bar and blast testing. The characteristics of twinning were found to be dependent on the strain rate. Fewer active twin systems were observed at high strain rates (i.e. >1000 s-1) while the twins were relatively thicker compared to those observed at lower strain rates. TWIP steels have not obtained widespread use particularly in the automotive sector due to their relatively low yield stress compared to alternative advanced high strength steels. Cold rolling and annealing was performed on the as-received TWIP steel to explore alloy strengthening using a grain refinement mechanism. The influence of initial grain size on twinning was investigated and a critical twin stress of 50 MPa at the single crystal limit was determined.

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Books on the topic "Twinning"

1

Ian, Campbell. Industrial twinning. The Industrial Society, 1990.

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2

Hewitt, Sally. Overseas twinning. Franklin Watts, 2006.

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Ian, MacGillivray, Thompson Barbara Ph D, and Campbell D. M, eds. Twinning and twins. Wiley, 1988.

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4

Greenidge, Eunice. Twinning in London: Twinning practices of the London boroughs. London Research Centre, 1992.

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United Church of Canada. Division of World Outreach., ed. Resource book for twinning. United Church of Canada, Division of World Outreach, 1998.

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6

Doyle, Robert P. Guidelines on library twinning. General Information Programme and UNISIST, United Nations Educational, Scientific and Cultural Organization, 1994.

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Sieczkarek, Margie. The history of Inverness town twinning. the author, 2002.

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8

Wróbel, Mirosław. Bliźniakowanie mechaniczne kryształów o strukturze regularnej: Mechanical twinning in cubic crystals. Wydawnictwa AGH, 2011.

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9

Committee, Bristol (England) Employment and Community Development. Twinning strategy: Link with Nicaragua. Bristol City Council, 1987.

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10

Association, Bristol Tbilisi. Leaflet and agreement on twinning. Bristol Tbilisi Association, 1994.

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Book chapters on the topic "Twinning"

1

Gooch, Jan W. "Twinning." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_12239.

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Koch, E. "Twinning." In International Tables for Crystallography. International Union of Crystallography, 2006. http://dx.doi.org/10.1107/97809553602060000574.

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Hall, Judith G. "Twinning." In Encyclopedia of Genetics. Routledge, 2014. http://dx.doi.org/10.4324/9781315073972-71.

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Bendon, Robert W. "Pathology of Twinning." In Keeling’s Fetal and Neonatal Pathology. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19207-9_13.

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Machin, Geoffrey A. "Pathology of Twinning." In Fetal and Neonatal Pathology. Springer London, 2001. http://dx.doi.org/10.1007/978-1-4471-3682-8_9.

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Machin, Geoffrey A. "Pathology of Twinning." In Fetal and Neonatal Pathology. Springer London, 1993. http://dx.doi.org/10.1007/978-1-4471-3802-0_9.

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Březina, B., and J. Fousek. "Twinning in Crystals." In Crystal Growth in Science and Technology. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0549-1_10.

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Collins, Charles. "Computation of Twinning." In Microstructure and Phase Transition. Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4613-8360-4_3.

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Gerdjikov, Stefan. "Generalised Twinning Property." In Implementation and Application of Automata. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94812-6_15.

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Hahn, Th, and H. Klapper. "Twinning of crystals." In International Tables for Crystallography. International Union of Crystallography, 2006. http://dx.doi.org/10.1107/97809553602060000644.

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Conference papers on the topic "Twinning"

1

Tunc, Caglar. "Optimal Digital Twinning of Random Systems with Twinning Rate Constraints." In 2024 IEEE 29th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD). IEEE, 2024. https://doi.org/10.1109/camad62243.2024.10942782.

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Alhamadah, Ahmed, Muntasir Mamun, Henry Harms, et al. "Photogrammetry for Digital Twinning Industry 4.0 (I4) Systems." In 2024 IEEE/ACS 21st International Conference on Computer Systems and Applications (AICCSA). IEEE, 2024. https://doi.org/10.1109/aiccsa63423.2024.10912549.

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Shi, Mingyu, Yasutaka Narazaki, Huayong Wu, Weilei Yu, huachen Jang, and Hongyou Lyu. "Parametric modeling-based digital twinning technology for bridge inspection." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.1969.

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<p>Bridges are a critical part of infrastructure in many countries, and their condition assessment and health monitoring play a vital role in people's safety and national economic development. Recently, digital twinning technology is a promising way in bridge maintaining and monitoring. However, the efficient generation of geometric models for digital twinning of bridges is one of the major challenges, especially for large complex bridges such as suspension bridges and cable-stayed bridges. To address this challenge, this research proposes an automation framework for efficient and rapid generation of digital twins of large complex bridges. This research demonstrates the application of the automation framework through real-world bridge cases, clarifies the effectiveness of the proposed approach, and shows the potential of the automation framework in the real world.</p>

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Abtahi, Matin, Andreas Athienitis, and Benoit Delcroix. "Operational Digital Twinning: A Pathway to Flexible Building Autonomy." In 2024 3rd International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED). IEEE, 2024. https://doi.org/10.1109/synergymed62435.2024.10799360.

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Andrei, Vlad C., Xinyang Li, Maresa Fees, Andreas Feik, Ullrich J. Mönich, and Holger Boche. "A Digital Twinning Platform for Integrated Sensing, Communications and Robotics." In 2024 IEEE 4th International Symposium on Joint Communications & Sensing (JC&S). IEEE, 2024. http://dx.doi.org/10.1109/jcs61227.2024.10646236.

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Gallagher, John C., and Eric T. Matson. "Analog Dopplegangers: Twinning with Deep Continuous-Time Recurrent Neural Networks." In 2024 International Joint Conference on Neural Networks (IJCNN). IEEE, 2024. http://dx.doi.org/10.1109/ijcnn60899.2024.10651456.

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Mishra, Sanket, and Jayendran Venkateswaran. "Digital Twinning for Resilient Supply Chain under Cash-Flow Constraint." In 2024 IEEE 21st International Conference on Software Architecture Companion (ICSA-C). IEEE, 2024. http://dx.doi.org/10.1109/icsa-c63560.2024.00062.

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Barral, Serge, and Adam Chikha. "An open simulation kernel for system-level spacecraft digital twinning." In Small Satellites Systems and Services Symposium (4S 2024), edited by Max Petrozzi-Ilstad. SPIE, 2025. https://doi.org/10.1117/12.3062784.

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Janiec, Janusz, and Ka Cheng. "Strengthening International Health regulations (IHR) implementation through peer-to-peer learning among National IHR Focal Points (NFP): The twinning project." In Proceedings of the International Congress Public Health - Achievements and Challenges. Institute of Public Health of Serbia "Dr Milan Jovanović Batut", 2024. http://dx.doi.org/10.5937/batutphco24110j.

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Background: Strengthening IHR NFP capacities is essential for enhancing the global response to public health emergencies, enabling more efficient information sharing, coordination, and implementation of the IHR. Peer-to-peer experience exchange was prioritized by NFPs during workshops, online discussions, and survey addressing NFPs' needs. The World Health Organization Regional Office for Europe (WHO EURO) promoted this approach by facilitating twinning between IHR NFP teams paired on common interests, similarities or challenges. The twinning NFP pairs were established during the pre-twinning workshops in 2023 and 2024. Topics for discussion were selected prior to the visits during online meetings. The usefulness and format of twinning among participants of twinning visits from Montenegro, Poland and Serbia were being evaluated. Methods and Objectives: Three face-to-face meetings (1 - 1.5 days) organized by NFPs in Warsaw, Podgorica and Belgrade (April - June 2024) were separately evaluated using the same, structured and tested evaluation form, which consist of 15 questions with 6 on usefulness, 5 on format, 4 on general impression and future twinning plans (all scaled or free text). Results: Participants from visiting NFP teams and collaborating surveillance experts completed 23 evaluation forms, in total. The overall general impression of each visit ranged between 9.4 and 9.6 on a scale to 10 (10 being the most positive). Questions on usefulness and format scored 4.4 and above on a scale to 5 (5 being the highest positive). The free text fields contained mainly positive comments. All participants would like to have one or two twinnings per year in the future. There were no major differences among the meetings evaluations. Conclusions: Although preparation and logistics may be challenging, the face-to-face twinning proved to be useful. The gained knowledge is expected to improve NFP's capacities and networking, and participants plan to conduct more twinning in the future. This peer learning approach is also beneficial for other IHR critical capacities (such as surveillance or laboratory work) in WHO Member States and could contribute to cross-border information exchange, improving national capacities through positive benchmarking from the twinning countries.

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Mao, Bo, Yiliang Liao, and Bin Li. "Twinning Behavior in Magnesium Alloys Processed by Laser Shock Peening." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2850.

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Abstract In this paper, the surface microstructure evolution of an AZ31B magnesium (Mg) alloy during laser shock peening (LSP) was investigated. Particular attention was paid to the deformation twinning behavior, which plays an important role in the mechanical properties of Mg alloys. The effect of laser intensity on the twinning distribution was investigated. Twin-twin interactions during LSP process were characterized. The mechanism responsible for the formation of gradient twinning microstructure and twinning-induced hardening effect were discussed.

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Reports on the topic "Twinning"

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Pope, David P., and David E. Luzzi. Twinning Mechanisms in Complex High Tm Intermetallic Compounds. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada362826.

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Strandberg, Margit, and Jan M. Hoem. Patterns of twinning for Swedish women, 1961-1999. Max Planck Institute for Demographic Research, 2002. http://dx.doi.org/10.4054/mpidr-wp-2002-031.

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Aidhy, Dilpuneet. Understanding Twinning and Deformation in High Entropy Alloys. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2475158.

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Aidhy, Dilpuneet. Understanding Twinning and Deformation in High Entropy Alloys. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2475323.

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Wang, Jian, John P. Hirth, and Carlos Tome. Twinning and De-Twining in Hexagonal-Close-Packed Metals. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1072243.

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Lee, J. W., S. Hanada, and M. H. Yoo. Deformation twinning of non-stoichiometric Ti{sub 3}Al alloy. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/201768.

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Hsiung, L. Interfacial Control of Deformation Twinning in Creep-Deformed TiAl/Ti3Al Nanolaminate. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/15014527.

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Saxena, A., A. R. Bishop, S. R. Shenoy, Y. Wu, and T. Lookman. A model of shape memory materials with hierarchical twinning: Statics and dynamics. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/102295.

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Goo, E. Deformation twinning in ordered alloys transformation induced ductility in intermetallics. [TiNi; NiAl]. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7082526.

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Tome, Carlos N. Experimental and numerical characterization of local stresses associated with twinning in HCP. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1525813.

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