bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of the Spray Parameters on the Transient Pressure within a Molten Particle Impacting onto a Flat Substrate
Authors: Montavon G. , Feng Z.G. , Coddet C. , Feng Z.Q. , Domaszewski M. 
Published: May 2021

Abstract
This paper is devoted to the investigation of the transient pressure occurring at the impact of a molten particle onto a flat substrate surface under different thermal spray conditions. In this paper, the mathematical model developed is based on the following assumptions: laminar, viscous and incompressible fluid; the mixed velocity-pressure model is employed to construct the finite element model. The choice of pressure penalty coefficient, which depends on the Reynolds number, is crucial for the results. This is discussed in this paper. The numerical results show that the pressure at the particle-substrate interface is strongly affected by the processing parameters, especially by the particle density and the impact velocity. The influence of spray parameters and material properties are also discussed.
Measurement of the Crystallinity of Hydroxyapatite Deposited by Plasma Spray
Authors: Rustichelli F. , Yang B. , Antolotti N. , Bertini S. , Girardin E. 
Published: May 2021

Abstract
As part of a characterization and mechanical research about hydroxyapatite (HA) plasma deposits for hip prosthesis, we addressed the problem of determining their crystallinity. A traditional normalization method employed by several laboratories is based on X-ray diffraction by a powder mixture of the investigated HA sample with a standard of crystalline powder, namely Al2O3. This method is quite unsatisfactory, as very often delivers unreasonable results. In order to overcome these difficulties we investigated some new methods for determining the crystallinity of HA sample, which are based on X-ray diffraction. All these methods provide reasonable results.
Nanoindentation Study of Thermal Spray Deposits
Authors: Leigh S.H. , Berndt C.C. , Ferber M.K. , Riester L. 
Published: May 2021

Abstract
The nanoindentation technique has been applied to thermal-sprayed metal, cermet and ceramic deposits. The hardness and elastic modulus were determined from the load-displacement curves. Each test was implemented by varying the penetration depth (100, 200, 300 and 400 nm) in the same test location and at least 20 tests were performed. The results were compared to those from microindentation tests. The nanoindentation test, essentially, measured the submicrometer scale properties of thermal spray deposits, which can be considered as "near-intrinsic" properties of the coatings. Thus, these measurements exclude most of the microstructural factors that influence the "macroscale" properties. The nanoindentation test exhibits significantly greater hardness and elastic modulus values than the microindentation test.
Fracture Behavior and Tensile Adhesive Properties of HA Coatings
Authors: Khor K.A. , Cheang P. 
Published: May 2021

Abstract
The attractive bioactive properties of HA are significantly reduced upon plasma spraying because of the phase transformation that accompanied the deposition process. One major factor that influence the extent to which the transformation occur appears to be the morphology and physical states of the HA raw powders. This paper reports the study on the influence of powder morphology and property on the fracture behaviour and tensile adhesive strength of plasma sprayed HA coatings. Three types of powders were used in the study; calcined HA (CHA), spray dried HA (SDHA) and flame spheroidised HA (SHA). The particle size range of 53 - 75 μm was employed for all 3 types of powders to effect an accurate comparison of the powders. Results show that the cohesive bond strength of the SHA coating was the highest because of the denser microstructure created by well-formed lamella splats. A correspondingly lower bond strength was recorded with less coherent coatings generated by agglomerated CHA and SDHA powders.
Study of Oxide Layers Obtained onto 304L Substrate Heated by a DC Plasma Jet
Authors: Pech J. , Hannoyer B. , Bianchi L. , Fauchais P. , Denoirjean A. 
Published: May 2021

Abstract
The preheating of metallic substrates before powder deposition in air plasma spraying improves the adhesion of oxide coatings, provided heating is performed with an optimal procedure to avoid a too high oxidation state of the surface. It means that the temperature level and heating time have to be monitored carefully. In these conditions a thin layer (&lt;100 nm) of oxides is formed on the substrate surface, the resulting contact of the molten droplets impinging the hot substrate is excellent (Rth&lt;10-7 m2.K/W) and the adhesion properties of coatings are enhanced. This paper is devoted to the study of the metallic surface. The substrate heating and thus oxidation are obtained with a d.c. Ar-H2 plasma jet flowing in air of which the stand off distance is maintained at 100 mm. The parameters investigated are macroscopic surface temperature and heating time. The characterization of the oxide layers is achieved by Mossbauer spectroscopy, near grazing X-ray diffraction, near UV-Visible-near IR spectroscopy and specular reflection infrared spectroscopy. At the end of this paper an attempt will be made to correlate these characterizations to the splats microstructure and coatings adhesion.
Residual Stress Analysis of Plasma Sprayed Thermal Barrier Coatings
Authors: Teixeira V. , Andritschky M. , Fischer W. , Stöver D. , Buchkremer H.P. 
Published: May 2021

Abstract
ZrO27Y2O3 plasma sprayed coatings were applied on high temperature Ni-based alloys precoated with a thin, dense, stabilized zirconia coating produced by Physical Vapour Deposition. This contribution concerns with the experimental and numerical analysis of residual stresses in PVD/Plasma Sprayed TBC's systems after coating deposition and after high temperature testing, such as cyclic oxidation and rapid thermal cycling. The thermal residual stress developed in the plasma sprayed top coating during spraying was simulated by using an heat transfer FEM program and an elasto-plastic biaxial stress model which calculate the stress gradients in coating/substrate system. The residual stress distributions within the TBC undergoing thermal cycling is then calculated by a biaxial stress model, taking into account the residual stress due to the deposition technique of the PVD and plasma sprayed top coating and the presence of the growing oxide interlayer. The residual stress within the upper layers of the top coating was verified experimentally by X-ray Diffraction for the as-deposited and thermal cycled samples, and the stresses within PVD bond coating and oxide interlayer were measured by microRaman spectroscopy technique in cross-sectioned samples. The measurements are in good agreement with residual stress modelled results.
HVOF- and VPS-Coatings Using Nanostructured Iron-Based Alloys
Authors: Brandt O.C. , Siegmann S. , Isch H.-P. 
Published: May 2021

Abstract
In thermal spraying, Fe-based alloys are often applied for relatively thick and inexpensive coatings. The main advantage of the Fe-based alloy coatings is their high ductility as compared to ceramic and hardmetal coatings. Other advantages such as high toughness, easy machineability and satisfactory corrosion resistance are characteristic of Fe-based alloys. The wear resistance is not outstanding, but nevertheless acceptable for a large number of applications. A further improvement of the wear resistance can be achieved by reinforcing the Fe-based alloy coatings, e.g. by addition of nitrogen to the spraying powder.
Thermal Spray Forming Using the HVOF Technique
Authors: Guilemany J.M. , Miguel J.R. , Dougan M.J. , de Paco J.M. , Dong Z. , Libre J. 
Published: May 2021

Abstract
The feasibility of using the HVOF process for the thermal spray-forming of free-standing components has been investigated. HVOF spray forming offers a number of potential advantages compared to the established procedure of plasma forming, including increases in component density, and reduction in material decomposition during spraying. Using blends of carbide and superalloy powders in various proportions, HVOF spraying has been successfully used to form free-standing cylinders and cones of various lengths and thicknesses. Microstructural examination of the spray-formed material has shown a homogeneous distribution of carbides in the superalloy matrix, with very low levels of porosity. Refinement of the procedure has allowed reduction of the matrix content, and the forming of fragile materials.
COMPORTAMENTO DIFERENCIAL DE LINHAGENS DE ALGODÃO A Cercospora gossypina
Authors: Dalbelo Puia Jacqueline , Ricini Martins Bruna , Borsato Leandro Camargo , Vigo Sandra Cristina 
Published: May 2021

A mancha foliar causada pelo fungo Cercospora sp. tem se tornado uma doença de grande importância para o algodoeiro, destacando-se pela sua alta severidade e grandes perdas econômicas. Uma maneira de potencializar o manejo da doença, encontra-se no uso de cultivares resistentes. Nesse sentido, o presente trabalho teve como objetivo avaliar o comportamento de vinte e cinco genótipos de algodão a Cercospora gossypina. O experimento foi realizado em casa de vegetação, com delineamento em blocos casualizados com quatro repetições por genótipos. Plantas de algodão com 25 dias de idade foram inoculadas com a suspensão fúngica do patógeno. Foram realizadas quatro avaliações de severidade da doença, com início aos sete dias após a inoculação, utilizando-se uma chave descritiva. Foram calculadas, a área sob a curva de progresso da doença para cada genótipo avaliado. Os genótipos FM 906, FM 975, CNPA 2015 126 B2 RFRL2, CNPA 2015 82 B2RFRL2, BRS 432 B2RF, TMG 44, CNPA 2015 231 B2RF, CNPA 2015 530 B2RF, TMG 81 WS, FM 954, CNPA 2014 155 B2RF, FM 975 GLT, DP 1536 B2RF, CNPA 2015 512 B2RF e FM 983 apresentaram os menores índices de severidade da doença. Estudos que caracterizem os níveis de suscetibilidade de genótipos de algodão em relação a doença são fundamentais, a fim de selecionar os mais adequados ao manejo da doença.
Palavras-chave: suscetibilidade; Gossypium L.; mancha de cercospora.

Differential behavior of cotton lines Cercospora gossypina

ABSTRACT: Leaf spot caused by the fungus Cercospora sp. has become a disease of great importance for cotton, standing out for its high severity and great economic losses. One way to improve the management of the disease is the use of resistant cultivars. In this sense, the objective of the present work was to evaluate the behavior of twenty-five cotton lines against Cercospora gossypina. The experiment was conducted in a greenhouse, with randomized block design and four repetitions per line. Cotton plants with 25 days of age were inoculated with fungal suspension of the pathogen. Four evaluations of disease severity were performed, starting at seven days after inoculation, using a descriptive key. The area under the disease progress curve was calculated for each genotype evaluated. The strains FM 906, FM 975, CNPA 2015 126 B2 RFRL2, CNPA 2015 82 B2RFRL2, BRS 432 B2RF, TMG 44, CNPA 2015 231 B2RF, CNPA 2015 530 B2RF, TMG 81 WS, FM 954, CNPA 2014 155 B2RF, FM 975 GLT, DP 1536 B2RF, CNPA 2015 512 B2RF and FM 983 showed the lowest disease severity rates. Studies that characterize the susceptibility levels of cotton strains in relation to the disease are fundamental in order to select the most suitable for disease management.
Keywords: susceptibility; Gossypium L; cercospora spot.
Progressive Judaism in France
Authors: Berkowitz Stephen 
Published: May 2021

AbstractProgressive Judaism became institutionalized in 1907 with the inauguration of the Union Libérale Israélite synagogue in Paris. During the nineteenth century, although Reform ideas were discussed and in some cases implemented (e.g. use of organ, reduction of piyutim), the Central Consistory prevented the creation of an independent Progressive synagogue. Today, the Progressive movement in France is relatively underdeveloped, with thirteen synagogues, full-time rabbis serving only Parisian congregations and no national movement structure. In recent years, however, there have been some positive developments such as the creation of a rabbinical body of French-speaking Progressive rabbis, an annual summer camp and the Moses Mendelssohn Foundation to promote Progressive Judaism. As French Jewry faces major challenges such as the persistence of a virulent form of anti-Semitism and the departure of thousands of active French Jews each year to Israel, the USA, Canada and elsewhere, Progressive Jews in France ask themselves what the future holds for them.
Talking My Way In
Authors: Sarah Elli Tikvah 
Published: May 2021

AbstractIn the lecture she gave at the Day of Celebration to mark twenty-five years of ordaining LGBT rabbis by Leo Baeck College on 23 June 2014, Rabbi Dr Rachel Adler spoke persuasively and encouragingly of ‘newcomers’ to the ongoing Jewish ‘conversation’, ‘affecting the tradition’ by teaching the tradition ‘to re-understand its own stories’, and also by telling ‘stories that the tradition does not know at all’. For most of my rabbinate, I was engaged in the first kind of storytelling. More recently, I have been doing more of the second kind. In my response to Rachel Adler’s lecture, I trace my journey, both within the context of the developing women’s rabbinate and as a particular journey taken by a lesbian feminist queer rabbi determined that the voices, perspectives and lives of LGBTQ Jews are included within and transform Jewish life and teaching.
A Woman Would Marry a Woman
Authors: Clenman Laliv 
Published: May 2021

AbstractThis article revisits the classic rabbinic midrash prohibiting marriages between women, found in Sifra or Torat Kohanim. The author proposes that the midrash be read as a construction of a parallel feminist science-fiction universe where lesbian marriages are commonplace and women are legal persons as well as active subjects. The complex interplay between the invisibility and visibility of lesbian sexual relations as well as the questioning of their existence and significance is examined in relation to their relative permissibility. Prohibition of lesbian marriages is linked to an acknowledgement of the substantive nature of sexual relations between women, while the denial of their existence is linked to permissive and dismissive positions. Maimonides’s ruling in his Mishneh Torah is analysed in view of his Talmudic influences, which are found to be competing with the radically divergent position found in Sifra, resulting in a position that both asserts and denies the significance of lesbian relationships.
Changing Gear but Not Direction
Authors: Blue Lionel 
Published: May 2021

Abstract
In this article, Lionel Blue contemplates approaching the end of life. The rabbinic tradition describes this world as a ‘prozdor’, a corridor to the world to come. We are ‘in between’ creations, with a toehold in heaven, yet intimations of heaven can be found in this life. As for dying, that can be a messy business. ‘I do not like the pain which accompanies all transformation.’ Dying is very different in the experience of those who are left behind, who wish to hold on to the one who is dying, whereas the latter may need silent companionship and permission to depart. Lionel offers some personal stratagems for dealing with old age. Indulge yourself and treat yourself insofar as your medication allows. Treasure friendships. Keep up your conversation with God.
Elizabethan Orientalia
Authors: da Silva Tavim Josè Alberto Rodrigues 
Published: May 2021

Abstract
Elizabeth I had people of Jewish origin in her personal circle, such as the famous physician Rodrigo Lopez, who was a relative of an influential Jew called Álvaro Mendes. Mendes was born in Portugal, and later took refuge in the Ottoman Empire, where he was known as Salomon ibn Ya’ish; we know that he exchanged correspondence with Elizabeth I, and the queen always favoured him in her missives to Sultan Murad III. The queen knew that Mendes received, while a Christian, a knighthood in the Order of Santiago, since she dubbed him ‘Eques’ in her correspondence. So even if ibn Ya’ish lived exiled in the Ottoman Empire, Elizabeth I still considered him a ‘Westerner’. The question that arises is: to what extent did this pragmatic diplomacy of Elizabeth I with Islamic states where some ‘Western’ Jews appear as pivotal elements shape their image in Elizabethan England, especially in the eclectic circles in which Shakespeare lived?
Teatrum Mundi
Authors: Gillis Rebecca 
Published: May 2021

Abstract
Israeli doctors enjoy the dubious reputation of being unfeeling, arrogant and altogether incapable of listening to patients’ concerns, to such an extent that the success of treatment can be seriously compromised, on both a scientific and human level. In an attempt to combat these shortcomings, Israel has followed other countries’ lead in incorporating exposure to the humanities as an integral part of the medical curriculum. I argue that Shakespeare’s theatre provides a unique platform for discussion of the ways in which we approach our own and our patients’ mental and physical pain. I address the particular challenges of teaching Shakespeare to multicultural Israeli medical students and the value of drawing on performances in Hebrew and Arabic as well as English. I employ performance theory and cultural studies to shed light on the insights to be gained by exposure to Shakespeare performance which can directly impact these future medical practitioners’ experience.
A Hebrew Take on Shylock on the New York Stage
Authors: Nahshon Edna 
Published: May 2021

Abstract
Shylock’47 was a Hebrew-language stage production presented by the Pargod Theatre in New York in 1947. Conceived and directed by Peter Frye, it was a metatheatrical play-within-a-play that interrogated the idea of producing The Merchant of Venice in the aftermath of the Holocaust. It combined original scenes culled from Shimon Halkin’s Hebrew translation of Merchant with present-based transitional scenes, created mostly through improvisation and discussion between director and cast. What eventually emerged was a script based on Shakespeare’s text with added dramatized discussions about the play’s meaning and relevance to Jews at that particular moment in history.
Relocalising academic literacy
Authors: Clemensen Nana , Holm Lars 
Published: May 2021

AbstractThis article contributes to the continuing discussion about academic literacy in international higher education. Approaching international study programmes as temporary educational contact zones, marked by a broad diversity in students’ educational and discursive experiences, we examine the negotiation and relocalisation of academic literacy among students of the international master’s programme, Anthropology of Education and Globalisation (AEG), University of Aarhus, Denmark. The article draws on an understanding of academic literacy as a local practice situated in the social and institutional contexts in which it appears. Based on qualitative interviews with eleven AEG-students, we analyse students’ individual experiences of, and perspectives on, the academic literacy practices of this study programme. Our findings reveal contradictory understandings of internationalism and indicate a learning potential for students in allowing a more linguistically and discursively diverse dialogue on knowledge production in academia.
“Rights of Things”
Authors: Schweitzer Doris 
Published: May 2021

Abstract
We can identify a legal vanishing point within neo-materialist and posthumanist approaches—either explicitly, for example, when things are regarded as political actors or contractual partners; or implicitly, when authors hint at the anthropocentric limitations of the granting of rights to human beings. Conversely, “rights of things” appear as a posthumanist approach to law as they decentralize “the human.” But do “rights of things” actually surmount the strict divide between humans (persona) and nonhumans (res) within law? By referring to three empirical cases—animal rights, rights of nature, and robot rights—I will argue that “rights of things” do not necessarily push against the anthropocentrism of law. Rather, we can identify a re-centralization of humans within a given milieu. Thus, the critical impact of the concept “rights of things” must be reconsidered; furthermore, we can draw some conclusions for the theoretical approaches of New Materialism and Posthumanism itself.
Wiping away the Tears of the Ocean
Authors: Ramose Mogobe 
Published: May 2021

Abstract
This article distinguishes between pan-Africanism and pan-Africanness. It argues that the history of pan-Africanism is replete with achievements but that the achievements could have been more and radical if the movement had from its inception adopted pan-Africanness, manifesting itself as ubuntu, as its point of departure. It focuses on epistemic and material injustice and suggests that there cannot be social justice without epistemic justice. The pursuit of the latter ought to lead to giving up one’s life if necessary, for the sake of giving life to others.
The Relevance of Robert Sobukwe’s Pan-Africanism in Contemporary South Africa
Authors: Marx Lauren 
Published: May 2021

Abstract
Presently certain catchphrases and hashtags have been circulating and trending in the public discourse such as ‘white monopoly capital’, ‘radical economic transformation’ and movements’ phrases such as ‘fees must fall’ and ‘Black First Land First’ formulated in response to issues around education, land and race specifically. However, Robert Sobukwe, intellectual giant of the pan-Africanist struggle, articulated very strong beliefs underpinning these burning societal questions from as early as the 1940s. His incarceration, banishment and ultimate death in 1978 left a political vacuum in South Africa and more than twenty years after democracy, the aforementioned issues Sobukwe stressed during his time need to be revisited. South African is currently experiencing a massive resurgence in the narrative and discourse regarding the need for dialogue around education transformation, land reform and race as a whole. Therefore, this article seeks to draw unpack Sobukwe’s take on these three burning issues in relation to the current discourse in South Africa today underpinned by pan-Africanist philosophy.