bluuebunny/crossref_metadata_2025 huggingface dataset:
Estudos do Vídeo Musical
Authors: Dias Branco Sérgio
Published: March 2016

Recensão crítica dos livros Sound and Vision: The Music Video Reader, ed. por S. Frith, A. Goodwin e L. Grossberg (1993); Rocking Around the Clock: Music Television, Postmodernism, & Consumer Culture, de E. Ann Kaplan (1987); Le clip: histoire et esthétique, de L. Jullier e J. Péquignot (2013); e Experiencing Music Video: Aesthetics and Cultural Context, de Carol Vernallis (2003).
Cinema no Estado Novo
Authors: Deniz Silva Manuel
Published: March 2016

Recensão crítica do livro Cinema no Estado Novo: a encenação do regime, de Patrícia Vieira (2011).
The Art Documentary in the Postwar Period
Authors: Dalle Vacche Angela
Published: March 2016

In the wake of the Holocaust and Hiroshima, the exploration of human creativity became central to reestablish the humanity of humankind. By closely following the art documentary, French film critic André Bazin focused on this genre in relation to painting, because the latter was the most elitist of all media. In the case of Alain Resnais’s Van Gogh (1948), Bazin used the encounter of cinema and painting as an example of symbiosis between the objects of still life and the objectifying impact of the camera lens. The critic’s writings on the art documentary also underlined the anti anthropocentric and cosmological vocation of the cinema. By turning the pictorial frame into the screen of cinema, Resnais’s Van Gogh de-centers the viewer into an introspective world of landscapes and rooms, where the painter himself is an absent participant or an anonymous figure rather than a protagonist in control. While self-portraiture in Van Gogh is elusive and Bazin’s scientific metaphors are vitalistic, the depth of human psychology remains as mysterious as the creativity of nature on this earth and the origin of life in the cosmos.
Narrativas da Imagem e (Anti)Expanded Cinema em Julião Sarmento
Authors: Duarte Miguel Mesquita , Marques Bruno
Published: March 2016

Para lá da dificuldade em circunscrever o seu campo teórico e epistemológico – dada a pluralidade de acepções que o mesmo abarca e dos múltiplos desdobramentos que foram despontando nas últimas décadas, - uma das tónicas mais prementes afectas ao expanded cinema refere-se à sua relação com questões de narrativa. Embora pouco óbvia, a referência ao trabalho de Julião Sarmento neste domínio parece-nos particularmente útil, desde logo pelo modo como a obra do artista português configura a existência de um impulso contra-narrativo que, construindo-se primeiramente no interior de uma dialéctica singular entre a fotografia e o cinema, pulveriza de modo particularmente eficaz o centramento estrutural e a linearidade espácio-temporal da sequência de imagens. Seguindo um percurso que nos leva dos filmes experimentais do meio dos anos 70 até às instalações dos anos 2000, procuramos sugerir que a importância do estruturalismo e da perspectiva genealógica da história e da memória do cinema constituem, no contexto da obra do artista, aspectos cada vez mais significativos na pesquisa ligada às novas configurações perceptivas, cognitivas e topológicas que acompanham a emergência do cinema dito expandido. A originalidade e o posicionamento crítico do autor levar-nos-á, por último, a equacionar a hipótese de um anti-expanded-cinema: é que mais do que uma problemática restrita à evolução tecnológica e ao alargamento multi-disciplinar, em Sarmento a expansão do cinema refere-se, sobretudo, à expansão dos critérios ligados à circulação do pensamento e do desejo numa topologia de infra-significação que emerge das novas formas de narrar, de fazer e de exibir cinema. Desta forma, o que está em causa é pois todo um novo modo de identificar, nomear e complexificar a problemática do expanded cinema, para lá da sua definição ortodoxa.
Bill Viola’s 'Nantes Triptych': Unearthing the sources of its condensed temporality
Authors: Vara Sánchez Carlos
Published: March 2016

In this text we intend to analyze Bill Viola’s video installation Nantes Triptych (1992) as an example of the richness which lies in the liminal spaces between arts. We defend the thesis that the utilization of the traditional pictorial structure of the triptych in this particular work, along with the powerful audiovisual material, renders a kairological event available to the viewer. This temporal experience makes possible an existential experience when in front of this video installation. To discuss this assumption we will use classical art theory texts about the triptychs, as well as, among others, Deleuze’s texts about time image and the triptych structure, Agamben’s concept of kairos, the concept of kairological artwork coined by David Chan and the philosophy of temporality developed by Merleau-Ponty.
Fotografia de poesia: devires da fabulação, durações em expansão e movimentos do instantâneo
Authors: Melchior Laila
Published: March 2016

A passagem do tempo nas fotografias de Alessandra Sanguinetti evoca a imagem em movimento se esta for entendida como mudança de qualidade. São imagens de um encontro entre o cinema e a fotografia que, contaminando-se mutuamente com seus processos, expandem-se um em direção ao outro. Uma duração real parte do referente (a vida quotidiana das personagens fotografadas) para a fabulação, fazendo surgir tantos outros seres, outros tempos, todos eles vivos na imagem. Trata-se de um género documental imaginário, onde as imagens evocam bifurcações, ganham corpo e movimento na medida em que não mais remetem a um real dado e objetivo, mas a um tempo alargado, de duração indeterminada. Os dez anos de feitura do ensaio The adventures of Guille and Belinda and The enigmatic meaning of their dreams aparecem então como se fotografados em uma única tarde. As durações e devires na passagem da infância à vida adulta ou do jogo superficial a um intenso encontro performativo fundam-se numa forma de discurso indireto livre. Por meio de uma noção ampla do dispositivo surge esta forma de subjetividade indireta livre própria à fotografia ocupando a fenda criada entre objetividade e subjetividade, privilegiando aspectos imateriais e temporais nas imagens.
Conceptual Synchronicity: Intermedial Encounters Between Film, Video and Computer
Authors: Spielmann Yvonne
Published: March 2016

Extended and revised version of “Conceptual Synchronicity: Intermedial Encounters between Film, Video and Computer”, previously published in Expanded Cinema: Art, Performance, Film, edited by, A. L. Rees, Duncan White, Steven Ball and David Curtis (London: Tate Publishing, 2011), 194-201.
Cinema de Observação: o Olhar Autoral
Authors: Lacerda Rodrigo
Published: March 2016

Recensão crítica do livro Observational Cinema. Anthropology, Film, and the Exploration of Social Life, de Anna Grimshaw e Amanda Ravetz (2009).
Creative Energies, Creative Industries
Authors: De Rosa Miriam
Published: March 2016

The review tries to take into account the annual NECS Conference held at Università Cattolica del Sacro Cuore in Milan in June 2014. Providing an overview of the attendance and the activities organized by the UCSC crew in association with the colleagues of the University of Udine, the text focuses primarily on the three keynote lectures given in the frame of the initiative by Prof. Raymond Bellour, Prof. Jason Mittel and Prof. Janet Wasko.
'Novas & Velhas Tendências no Cinema Português Contemporâneo'
Authors: Cunha Paulo
Published: March 2016

Recensão crítica do livro Novas & Velhas Tendências no Cinema Português Contemporâneo, coordenado por João Maria Mendes (2013).
Still Drifting? Expanded Situationism and Filmic Dérive
Authors: Rascaroli Laura
Published: March 2016

Ideas connected to the sphere of expanded cinema are here mobilised to identify the aesthetics and ideology of the use of a technology that is no longer filmic, but that derives from it, while having never been a cinematic genre or form in itself. Expanded cinema’s emphasis on participation, on performance and on an adapted experience of space and time are equally useful to an understanding of the contemporary phenomenon of post-situationist dérive and of its revival as a critical artistic practice in the contemporary world. My point is that dérive can be seen, in some of its manifestations at least, as a filmic concept — but one that does not associate itself with the cinema as a historicised technology of projection and a place.
Labour in a Single Shot. Harun Farocki / Antje Ehmann
Authors: Hoof Florian
Published: March 2016

Eine Einstellung zur Arbeit – Labour in a Single Shot is the last exhibition Harun Farocki curated together with Antje Ehmann. It shows the results of the long term project labour in a single shot that Antje Ehmann and Harun Farocki started in 2011.
De la invisibilidad al reconocimiento. Archivo y memoria cultural del genocidio ruandés.
Authors: Zylberman Lior
Published: March 2016

Entre abril y julio de 1994 tuvo lugar en Ruanda, país ubicado en el corazón de África, el genocidio más rápido de la historia. Como asegura Linda Melvern, “la tasa de muerte en Ruanda fue cinco veces la alcanzada por los nazis”; en dicho período se calcula que fueron asesinados casi 800.000 tutsis y hutus moderados. Con el suceder de los años, diversos estudios académicos se esforzaron por estudiar lo que allí sucedió pero lo cierto es que una de las formas por la cual Occidente conoció los hechos fue a través del cine, con producciones tanto de ficción como documentales. Mientras el mundo fue tomando conciencia de este suceso, mientras las consecuencias de este crimen se hacían visibles, el cine comenzó a crear un archivo visual del genocidio, ya sea a través de imágenes recreadas o efectuando entrevistas en suelo ruandés a sobrevivientes y protagonistas de los hechos. En ese sentido, las producciones cinematográficas crearon un verdadero archivo sobre el genocidio ruandés, logrando así construir una memoria cultural. A partir de esta última cuestión, el presente escrito se propone estudiar el archivo cinematográfico del genocidio ruandés desde la noción de memoria cultural pensada por Aleida Assmann. Ésta es un tipo de memoria que se encuentra mediada a través de textos, imágenes, rituales, etc.; en ese sentido, el cine se ha vuelto uno de los medios contemporáneos más importantes para la construcción y transmisión de la memoria cultural. Por otro lado, la dinámica de la memoria cultural, en tanto forma activa de recuerdo, puede ser comprendida a partir del diálogo entre el canon y el archivo. Así, indagaremos el archivo sobre el genocidio ruandés a partir de dicho diálogo, un diálogo no siempre armónico sino que en ocasiones también puede ser disonante.
Histoire(s) du cinéma: el archivo del siglo. Intuiciones warburgianas sobre la historia
Authors: Taccetta Natalia
Published: March 2016

Historiadores y artistas se apropian, interpretan e interrogan las estructuras del pasado y los materiales del archivo pensándolo como “una protección contra el tiempo y su inevitable entropía y destrucción” (Doane 2012, 327). En relación con los “tipos de archivo”, Ana María Guasch propone la existencia de dos “máquinas” desarrolladas durante las primeras décadas del siglo XX: la de Walter Benjamin –a la que caracteriza como montaje literario- y Aby Warburg –a la que refiere como montaje visual-, por un lado; y la de los archivos fotográficos de August Sander, Karl Blossfeldt y Albert Renger-Patzsch, por el otro. Este artículo se propone seguir el modelo epistemológico de Warburg a fin de proponer una lectura de las Histoire(s) du cinéma de Jean-Luc Godard (1988-1998) como un archivo que desafía las concepciones convencionalizadas de historia.
Memórias do império: o filme amador e seus deslocamentos na instalação 'Looming Fire' de Péter Forgács
Authors: Rodovalho Beatriz
Published: March 2016

A partir da instalação Looming Fire – Stories From the Netherlands East Indies (Péter Forgács, 2013), este trabalho investiga os novos significados mobilizados pela retomada de filmes amadores feitos no auge do período colonial das Índias Orientais Holandesas, território que hoje constitui a Indonésia. À medida que esses registos privados assumem novos territórios de história e de memória, propõe-se analisar seus diversos deslocamentos. Ao lado de filmes que se reapropriam de imagens oficiais de arquivos das colônias holandesas como Mother Dao, the Turtle-like (Vicent Monnikendam, 1995) e Facing Forward (Fiona Tan, 1999), pretende-se igualmente explorar como os procedimentos éticos e estéticos operados pelos artistas questionam a lógica e o olhar colonialistas.
Le vieil homme et la cage de verre : Adolf Eichmann et la migration d’une iconographie sous- et surdéterminées
Authors: Steinle Matthias
Published: March 2016

Il s’agit ici de s’interroger sur la représentation filmique paradoxale d’Adolf Eichmann, l’abondance d’images du procès de 1961 à Jérusalem contrastant avec la pénurie d’images d’archives relatives à sa carrière sous le troisième Reich et à sa fuite d’Allemagne. L’article s’intéresse d’abord aux productions fictionnelles et documentaires sur Eichmann depuis sa capture à Buenos Aires pour en déterminer les schémas narratifs et discursifs. Dans un deuxième temps, on se penche sur quelques-uns des films réalisés en Allemagne sur Eichmann après la chute du Mur. Ces docu-fictions révèlent une évolution intéressante de la mémoire culturelle par rapport à la Shoah. Pour finir est proposée une analyse du phénomène de migration d’images, à l’exemple de la fameuse cage de verre qui est devenue une sorte de « super-signe » de l’Holocauste et que l’on retrouve sous différentes formes, y compris dans des films grand public.
Lisboa e os seus cinemas. Gestos, práticas e espaços de uma afinidade
Authors: Pedrosa Patrícia Santos
Published: March 2016

Recensão crítica do livro Os Cinemas de Lisboa. Um fenómeno urbano do século XX, de Margarida Acciaiuoli (2012).
No way home: silence, slowness and the problem of authenticity in the cinema of Lisandro Alonso
Authors: Cavallini Roberto
Published: March 2016

In his trilogy, comprising La Libertad (2001), Los Muertos (2004) and Liverpool (2008), Argentinian director Lisandro Alonso employs a distinctive narrative motif, namely the journey of solitary individuals through desolated landscapes in rural Argentina. From a comparative view, the key to understanding these introverted trajectories is to consider Alonso’s construction of narrative space around the misery of a stark void, namely the absence of home. For Alonso, home is not a peaceful destination, connoting the intimacy of a family, serenity or simply a place where one is allowed to dream in peace (Bachelard). The absence of home becomes the blind spot of these journeys: home turns out to be a broken horizon. In this essay I will mainly focus on the film Los Muertos and the way in which it radicalizes narrative space through the combination of cinematic silence (absence of words and dialogues) and cinematic slowness (static long-takes) while formulating a void which coincides with the protagonist’s homelessness. Moreover, this essay tries to consider how Alonso’s radical cinematic realism problematizes the concept of authenticity in its modern formation, and also in the context of Rancière’s notion of documentary fiction and the relationship between aesthetics and politics.
“O cinema sob o olhar de Salazar” e a história do cinema português
Authors: Mendonça Leandro
Published: March 2016

Recensão crítica do livro O cinema sob o olhar de Salazar, coord. Luís Reis Torgal (2011) 2ªed.
Nitrate Did Wait. And It Looks Fabulous. The Nitrate Picture Show at the George Eastman House (Rochester, NY; May 1-3 2015)
Authors: Negri Sabrina
Published: March 2016

During The Nitrate Picture Show, nitrate prints were projected for an audience of archivists, scholars and cinephiles. This review will provide an account of the festival screenings, and will discuss the value of a festival of film conservation in the contemporary digital media landscape.
Paolo Gioli: An Exercise in Exhibition Making
Authors: Camporesi Enrico
Published: March 2016

The text is thought as a brief museological and museographical journey of Paolo Gioli’s exhibition “Volti” [“Faces”], that allows the reader to go through the exhibition-making process, discussing, among others, the difficulties that I have encountered.
Exploración, experiencia y emoción de archivo. A modo de introducción
Authors: Sánchez-Biosca Vicente
Published: March 2016

Introducción al dossier "Los archivos fílmicos y la memora: documentos e ficciones"
Antemortem tooth loss in the Ablanganis Early Iron Age skeletons, Van - Turkey
Ablanganis Erken Demir Çağ iskeletlerinde antemortem diş kaybı, Van - Türkiye
Authors: Yılmaz Hakan
Published: March 2016

The Necropolis Ablanganis is located 25 km north of Van city center, in Van F Type Prison field. The nearest residential area to Necropolis is the village, located about 2.5 km. away, in the north central, Yumrutepe that is connected to Van (Derleş). The aim of this study is to assess the prevalence rate of antemortem tooth loss date in the Early Iron Age from Ablanganis human tooth. Study material consists of 19 individuals’ maxilla and mandible, of which 405 were teeth and tooth socket. The age distribution by sex examined 19 members: 7 female individual age classes are young adults (20-35 age), 11 male individuals again in the age classes are young adults (20-35 age) and 1 adult male individual in the age classes is middle adult (35-50). The mean age at death is estimated at 20-50 years. The Examining adult individual permanent tooth and tooth socket were observed to antemortem tooth loss at the rate of 6.42%.  The rates of antemortem tooth loss observed for males 7.75% and 4.08% for female. The probable cause of tooth loss seen in the Ablanganis teeth may be associated with lifestyle, diet and periodontal disease. ÖzetAblanganis Nekropolü, Van il merkezinin 25 km. kuzeyindeki Van F Tipi Cezaevi sahasında yer almaktadır. Nekropole en yakın yerleşim alanı, yaklaşık 2.5 km. kuzeyinde bulunan ve Van il merkezine bağlı Yumrutepe (Derleşin)  köyüdür. Bu çalışmanın amacı, Erken Demir Çağ’a tarihlendirilen Ablanganis iskeletlerine ait dişlerde gözlenen antemortem diş kayıplarının dağılım oranının değerlendirilmesidir. Çalışmanın materyali, toplam 19 bireye ait 405 adet diş ve diş soketidir.  Cinsiyete göre 19 bireyin yaş dağılımına bakıldığında 7 kadın birey genç erişkin (20–35 yaş), 11 erkek birey yine genç erişkin (20–35 yaş) ve 1 erkek birey orta yaş grubundadır. İncelenen bireylerin ölüm yaşı 20–50 yaş aralığındadır. Söz konusu erişkin bireylerin daimî diş ve diş yuvalarında % 6,42 oranında antemortem diş kaybı görülmüştür. Erkek bireylerde gözlenen antemortem diş kaybı %7,75, kadın bireylerde %4,08’dir. Ablanganis dişlerinde görülen diş kaybının muhtemel nedeni topluluğun yaşam biçimi, beslenme şekli ve periodontal rahatsızlıklarla ilişkili olabilir.
The Calendar Mindset: Scheduling Takes the Fun Out and Puts the Work In
Authors: Tonietto Gabriela N. , Malkoc Selin A.
Published: March 2016

Consumers often schedule their activities in an attempt to use their time more efficiently. Although the benefits of scheduling are well established, its potential downsides are not well understood. The authors examine whether scheduling uniquely undermines the benefits of leisure activities. In 13 studies using unambiguous leisure activities that consumers commonly schedule (e.g., movies, a coffee break), they find that scheduling a leisure activity (vs. experiencing it impromptu) makes it feel less free-flowing and more work-like. Furthermore, scheduling diminishes utility from leisure activities, in terms of both excitement in anticipation of the activities and experienced enjoyment. Importantly, the authors find that maintaining the free-flowing nature of the activity by “roughly scheduling” (without prespecified times) eliminates this effect, thus indicating that the effect is driven by a detriment from scheduling rather than by a boost from spontaneity. The reported findings highlight an important opportunity for marketers to improve consumers’ experiences and utility by leveraging scheduling behavior while also providing important implications for consumer well-being from leisure consumption.
Pulmonary Hypertension in the Dog
Authors: Poser Helen , Guglielmini Carlo
Published: March 2016

Canine pulmonary hypertension is a clinical condition that needs to be adequately investigated and recognised because of the lack of specific clinical signs, the potential for rapid and irreversible deterioration of pulmonary vascular function and the development of right-sided heart failure. In recent years, many studies have been published on pulmonary hypertension, improving the understanding of its pathophysiology, the accuracy of diagnostic tests and the management of affected patients. This article provides updated information on pulmonary hypertension and serves as a resource for veterinarians regarding the interpretation of diagnostic tests and the clinical management of affected dogs.
Effects of Acute Administration of D,L-Homocysteine Thiolactone on the Antioxidative Status of Rat Intestine and Liver
Authors: Stojanović Marija , Šćepanović Ljiljana , Bosnić Olivera , Mitrović Dušan , Jozanov-Stankov Olga , Šćepanović Vuk , Šćepanović Radomir , Stojanović Teja , Ilić Slobodan , Djurić Dragan
Published: March 2016

Oxidative stress appears to play a role in the pathogenesis of several inflammatory gastrointestinal diseases. Increased homocysteine levels may play a role in the pathogenesis of Chron’s disease and ulcerative colitis. The aim of this study was to examine the influence of homocysteine on the antioxidant status of rat intestine and liver. The levels of thiobarbituric acid reactive substances (TBARS), activity of catalase (CAT) and total antioxidant status (TAS) were investigated in the isolated gut and liver of young male rats in the control group (8 rats) and after 3-hоur incubation in high doses of D, L-homocysteine thionolactone (Hcy) (10 μmol/L) (8 rats). Samples of duodenum, ileum, colon and liver were homogenized in sodium phosphate buffer (1:10). Homogenates were centrifuged at 10000 for 10 min at 4° C and the supernatant was taken for biochemical assays. Our results showed that high D, L-homocysteine thionolactone concentration reduced enzymatic catalase activity in homogenates of the isolated segments of duodenum (27.04%) p<0.01; ileum (37.27%), colon (34.17%) and liver (67.46%) p<0.001. Exposition to high D,L-homocysteine thiolactone concentration significantly increased TBARS levels in the duodenum (106.05%), ileum (47.24%), colon (112.75%) and liver (32.07%) (p<0.01). Homocysteine also modifi ed the total antioxidant status of homogenates from the duodenum, ileum, colon and liver, increasing by 20.68% (duodenum), 24.74% (ileum), 14.88% (colon) and 19.35% (liver) (p<0.001). Homocysteine induced a consistent oxidative stress in rat’s intestine and liver (reduced activity of catalase and increased level of TBARS), but the elevated activity of TAS in our experiments could be explained as an adaptive response to the generated free radicals which indicates the failure of the total antioxidant defense mechanism to protect the tissues from damage caused by homocysteine.
Analysis of Heavy Metals Concentration in Tissues of Three Different Fish Species Included in Human Diet from Danube River
Authors: Milanov Đ. Raša , Krstić P. Milena , Marković V. Radmila , Jovanović A. Dragoljub , Baltić M. Branislav , Ivanović S. Jelena , Jovetić Milica , Baltić Ž. Milan
Published: March 2016

The aim of this study was the investigation of water, sediments and fish tissues contamination with heavy metals. All samples were taken from the Danube River in Belgrade region, a location upstream from Batajnica. Concentrations of Cd, Hg and Pb in water samples were not detected, while concentrations of Zn, Fe, Cu and As were in the range of 0.004 - 0.330 mg L-1. Iron was the most deposited metal in sediment samples in contrast to water samples where all investigated metals were detected. For the purpose of heavy metals determination in fresh fish tissue, fifteen samples of three different fish species, silver carp (Hypophthalmichthys molitrix), common carp (Cyprinus carpio) and wels catfish (Silurus glanis) were collected. Concentrations of Pb, Cd, As and Hg were determined in the digestive tract, liver and muscle by absorption spectroscopy. The highest concentration of Pb was in the digestive tract in all three fish species, ranging from 0.036 to 1.518 μg g-1, while Cd was mostly deposited in the liver. Concentrations of As were in the range of 0.36 - 0.73 μg g-1 in Hypophthalmichthys molitrix, 0.013 - 0.18 μg g-1 in Cyprinus carpio and 0.003 - 0.005 μg g-1 in Silurus glanis tissues, while the content of Hg was equal in all tested tissues of carp. Concentrations of all metals were found to be present in the fish samples at different levels, but these values are under the maximum residual levels prescribed by the European Union (EU) and the maximum allowed concentrations (MAC) for Serbia, so the fish meat is acceptable for the human consumption.
L-Arginine-No System Participates in the Analgesic Effect of Flunixin Meglumine in the Rat
Authors: Milovanović Mirjana , Vučković Sonja , Prostran Milica , Trailović Saša , Jovanović Milan
Published: March 2016

This study investigated whether the L-arginine-NO system participates in the analgesic effect of flunixin meglumine in the rat. Hyperalgesia was induced by intraplantar (i.pl.) administration of carrageenan (500 μg) into the rat’s hind paw. Electronic von Frey apparatus was used to determine paw withdrawal threshold induced by pressure as the painful stimulus, measured in grams (g). Flunixin meglumine (FM; 0.09-0.1 mg/kg; s.c.) and NG-nitro-L-arginine methyl ester (L-NAME; 10 mg/kg; i.p.), given separately as a pre-treatment, i.e. 15 min before i.pl. injection of carrageenan, produced a significant antinociception. When FM (0.09 mg/kg) and a sub-effective dose of L-NAME (5 mg/kg) were co-administered, the antinociceptive effect was significantly increased in comparison with the effect of FM alone. L-arginine (L-ARG;10 mg/kg; i.p.) itself did not produce significant effect on carrageenan-induced hyperalgesia, but significantly reduced the antinociceptive effects of both FM and FM + L-NAME combination. The inhibition of the production of NO might be involved in the mechanism of the analgesic effect of FM.
Optimum design of non-uniform symmetrical linear antenna arrays using a novel modified invasive weeds optimization
Authors: Kenane El Hadi , Djahli Farid
Published: March 2016

This paper presents a new modified method for the synthesis of non-uniform linear antenna arrays. Based on the recently developed invasive weeds optimization technique (IWO), the modified invasive weeds optimization method (MIWO) uses the mutation process for the calculation of standard deviation (SD). Since the good choice of SD is particularly important in such algorithm, MIWO uses new values of this parameter to optimize the spacing between the array elements, which can improve the overall efficiency of the classical IWO method in terms of side lobe level (SLL) suppression and nulls control. Numerical examples are presented and compared to the existing array designs found in the literature, such as ant colony optimization (ACO), particle swarm optimization (PSO), and comprehensive learning PSO (CLPSO). Results show that MIWO method can be a good alternative in the design of non-uniform linear antenna array.
Condition assessment of transformer insulation using dielectric frequency response analysis by artificial bee colony algorithm
Authors: Bigdeli Mehdi , Aghajanloo Jafar
Published: March 2016

Transformers are one of the most important components of the power system. It is important to maintain and assess the condition. Transformer lifetime depends on the life of its insulation and insulation life is also strongly influenced by moisture in the insulation. Due to importance of this issue, in this paper a new method is introduced for determining the moisture content of the transformer insulation system using dielectric response analysis in the frequency domain based on artificial bee colony algorithm. First, the master curve of dielectric response is modeled. Then, using proposed method the master curve and the measured dielectric response curves are compared. By analyzing the results of the comparison, the moisture content of paper insulation, electrical conductivity of the insulating oil and dielectric model dimensions are determined. Finally, the proposed method is applied to several practical samples to demonstrate its capabilities compared with the well-known conventional method.
Operating point resolved loss computation in electrical machines
Authors: Pfingsten Georg Von , Ruf Andreas , Steentjes Simon , Hombitzer Marco , Franck David , Rwth Kay Hameyer
Published: March 2016

Magnetic circuits of electromagnetic energy converters, such as electrical machines, are nowadays highly utilized. This proposition is intrinsic for the magnetic as well as the electric circuit and depicts that significant enhancements of electrical machines are difficult to achieve in the absence of a detailed understanding of underlying effects. In order to improve the properties of electrical machines the accurate determination of the locally distributed iron losses based on idealized model assumptions solely is not sufficient. Other loss generating effects have to be considered and the possibility being able to distinguish between the causes of particular loss components is indispensable. Parasitic loss mechanisms additionally contributing to the total losses originating from field harmonics, non-linear material behaviour, rotational magnetizations, and detrimental effects caused by the manufacturing process or temperature, are not explicitly considered in the common iron-loss models, probably even not specifically contained in commonly used calibration factors. This paper presents a methodology being able to distinguish between different loss mechanisms and enables to individually consider particular loss mechanisms in the model of the electric machine. A sensitivity analysis of the model parameters can be performed to obtain information about which decisive loss origin for which working point has to be manipulated by the electromagnetic design or the control of the machine.
Dynamic and steady state performance comparison of line-start permanent magnet synchronous motors with interior and surface rotor magnets
Authors: Ogbuka Cosmas , Nwosu Cajethan , Agu Marcel
Published: March 2016

A comprehensive comparison of the dynamic and steady state performance characteristics of permanent magnet synchronous motors (PMSM) with interior and surface rotor magnets for line-start operation is presented. The dynamic model equations of the PMSM, with damper windings, are utilized for dynamic studies. Two typical loading scenarios are examined: step and ramp loading. The interior permanent magnet synchronous motor (IPMSM) showed superior asynchronous performance under no load, attaining faster synchronism compared to the surface permanent magnet synchronous motor (SPMSM). With step load of 10 Nm at 2 s the combined effect of the excitation and the reluctance torque forced the IPMSM to pull into synchronism faster than the SPMSM which lacks saliency. The ability of the motors to withstand gradual load increase, in the synchronous mode, was examined using ramp loading starting from zero at 2 s. SPMSM lost synchronism at 12 s under 11 Nm load while the IPMSM sustained synchronism until 41 seconds under 40 Nm load. This clearly suggests that the IPMSM has superior load-withstand capability. The superiority is further buttressed with the steady state torque analysis where airgap torque in IPMSM is enhanced by the reluctance torque within 90° to 180° torque angle.
Professor Robert Schaller: Zener Medalist
Authors: Mari D.
Published: March 2016

The following is the text of an oral presentation delivered at the Zener Medal Award ceremony in Hefei on 23 September 2015.
Measurement of the Indentation Modulus and the Local Internal Friction in Amorphous SiO2 Using Atomic Force Acoustic Microscopy
Authors: Zhang B. , Wagner H. , Büchsenschütz-Göbeler M. , Luo Y. , Küchemann S. , Arnold W. , Samwer K.
Published: March 2016

For the past two decades, atomic force acoustic microscopy (AFAM), an advanced scanning probe microscopy technique, has played a promising role in materials characterization with a good lateral resolution at micro/nano dimensions. AFAM is based on inducing out-of-plane vibrations in the specimen, which are generated by an ultrasonic transducer. The vibrations are sensed by the AFM cantilever when its tip is in contact with the material under test. From the cantilver’s contactresonance spectra, one determines the real and the imaginary part of the contact stiffness k*, and then from these two quantities the local indentation modulus M' and the local damping factor Qloc-1 can be obtained with a spatial resolution of less than 10 nm. Here, we present measured data of M' and of Qloc-1 for the insulating amorphous material, a-SiO2. The amorphous SiO2 layer was prepared on a crystalline Si wafer by means of thermal oxidation. There is a spatial distribution of the indentation modulus M' and of the internal friction Qloc-1. This is a consequence of the potential energy landscape for amorphous materials.
Analysis of the Phase Transitions in BNT-BT Lead-Free Ceramics Around Morphotropic Phase Boundary by Mechanical and Dielectric Spectroscopies
Authors: Silva P.S. , Diaz J.C.C.A. , Florêncio O. , Venet M. , M’Peko J.C.
Published: March 2016

In this work, the syntheses and characterization by mechanical and dielectric spectroscopies of (1-x) Bi0.5Na0.5TiO3-xBaTiO3 (BNT-100xBT), with x = 0.05, 0.06 and 0.07, lead-free piezoelectric ceramics is reported. Ceramic samples of BNT-BT have been prepared by mixed-oxide method and then conventionally sintered. X-ray diffraction patterns of sintered samples, indicated for BNT-7BT the presence of tetragonal (P4mm) complex perovskite structure, whereas for BNT-5BT and BNT-6BT the samples exhibit a mixture of tetragonal (P4mm) and rhombohedral (R3c) crystalline phases, which reveal the presence of a morphotropic phase boundary (MPB) in the BNT-BT system. Measurements of internal friction, Q-1, and the storage modulus, E’, as a function of temperature at various frequencies were carried out in a Dynamic Mechanical Analyzer (DMA), in the temperature range from 0ºC to 600ºC. Dielectric profiles are recorded in the frequency range from 1kHz to 100kHz and the temperature range from room temperature to 475ºC. Mechanical loss spectra obtained for investigated compositions of BNT-BT samples showed different frequency-independent anomalies. Two main anomalies for BNT-5BT and BNT-6BT, observed around 100ºC and 430ºC were associated with the ferroelectric-antiferroelectric and antiferroelectricparaelectric phase transitions, respectively. The results obtained from mechanical loss measurements were supported by dielectric relaxation spectra. For BNT-7BT, outside the MPB, four different frequency-independent processes were observed.
Internal Friction of Li7La3Zr2O12 Based Lithium Ionic Conductors
Authors: Wang X.P. , Song L. , Hu J. , Xia Y.P. , Xia Y. , Gao Y.X. , Zhang L.C. , Magalas L.B. , Fang Q.F.
Published: March 2016

The diffusion mechanisms of lithium ions in tetragonal phase as well as in Al and Nb stabilized cubic Li7La3Zr2O12 compounds were investigated by low-frequency internal friction technique. In the cubic Li7La3Zr2O12 phase, a remarkable relaxation-type internal friction peak PC with a peak height up to 0.12 was observed in the temperature range from 15°C to 60°C. In the tetragonal phase however, the height of the PT peak dropped to 0.01. The obvious difference of the relaxation strength between the cubic and tetragonal phases is due to the different distribution of lithium ions in lattice, ordered in the tetragonal phase and disordered in the cubic phase. Based on the crystalline structure of the cubic garnet-type Li7La3Zr2O12 compound, it is suggested that the high internal friction peak in the cubic phase may be attributed to two diffusion processes of lithium ions: 96h↔96h and 96h↔24d.
Influence of Mg Content on Deformability of AlMg Alloys during Extrusion
Authors: Leśniak D. , Dziki M. , Zasadziński J. , Libura W.
Published: March 2016

In this study the research on deformability of AlMg alloys with high Mg contents in extrusion was carried out. The different shapes from AlMg alloys containing 3.5%, 4.5% and 5.5% of Mg were extruded on 500 T semi-industrial press by using one-hole and multi-hole flat dies. The extrudates surface quality was under investigations in relation with the temperature-speed parameters of the extrusion process. The metal exit speed was estimated depending on the extrudates shape, wall thickness and Mg content. The alloy’s border solidus and liquidus temperatures were also determined.
Joining of Low-Carbon Steel Sheets with Al-Based Weld
Authors: Boczkal G. , Perek-Nowak M. , Majewska Z.
Published: March 2016

The analysis of the connection steel/Al/steel made by resistance welding was performed. The used low-carbon steel had low content of carbon and other elements, aluminum was of 99.997 wt.% Al purity. Formation of various FeAl intermetallic phases found in the phase diagram depending on the duration of the process was analyzed. Two distinctively different types of structure depending on time of welding were observed: 1) hypoeutectic structure for samples processed for 5 s, and 2) eutectic structure for samples processed for 10 s and more. The shear test showed increase of mechanical properties of the connection for the samples welded 10 s.
Microstructures of Metallurgical Slags
Authors: Jonczy I.
Published: March 2016

The article characterizes microstructures of metallurgic slag of varying age remaining from the production of iron and steel and the Zn-Pb ore processing in relation to magmatic rocks and ores. Based on microscopic observations - among others - hypocrystalline, hyaline and felsite (characteristic for magmatic rocks) microstructures were observed in the slag. Also microstructures related to ores, including framework and dendritic, colomorphic and corrosive structures were noted. The diversity of the microstructures presented in the article is a result of the differentiation in the formations of individual components of the slags, which depends, inter alia, on the method and the rate of cooling of the alloys.
The Study of Selected Properties of Ti EB PVD Coating Deposited Onto Inner Tube Surface at Low Temperature
Authors: Kottfer D. , Ferdinandy M. , Kaczmarek L. , Trebuňa P. , Hvizdoš P.
Published: March 2016

This study investigates the selected properties of the thin Ti coating applied by activated evaporation EB PVD technique. This technique was used for the deposition of Ti thin coating onto inner surface of OKhN3 MFA steel tubes. Deposition process was carried out at temperature 200°C. Conventional type of coatings - monolayer Ti - was analyzed by standard techniques for surface status and quality assessment - coating thickness, chemical composition by EDX analysis, adhesion, hardness, roughness, and growth direction of columns at room temperature. Ti monolayer achieved roughness Ra equal from 0.42 μm to 0.47 μm. The resulting hardness was from 2 GPa to 8.5 GPa depending on the sample location inside the vacuum chamber. Placing of the coated surface also affected the direction of grain growth of Ti coating columns. The angles α of grain growth were found to be from 40° to 60°. Angle α increased two to three times more than the incidence angle β (from 12° to 28°) of evaporated Ti particles. Values of the adhesion measured along the Ti growth direction were mostly higher (up to 10%) or the same as those measured perpendicular to it.
Analysis of Structural and Material Aspects of Selected Elements of a Hydropneumatic Suspension System in a Passenger Car
Authors: Konieczny Ł. , Burdzik R. , Węgrzyn T.
Published: March 2016

The article addresses results of analyses of design solutions and materials commonly used in gas springs for hydropneumatic suspension systems. The authors have discussed main advantages resulting from application of such a design solution in passenger car suspension systems. Fundamental correlations defining the parameters characterising a gas spring with constant gas mass have been referred to. Also materials used in the manufacture of selected gas spring elements have been described
Effect of Heat Input During Disk Laser Bead-On-Plate Welding of Thermomechanically Rolled Steel on Penetration Characteristics and Porosity Formation in the Weld Metal
Authors: Lisiecki A.
Published: March 2016

The paper presents a detailed analysis of the influence of heat input during laser bead-on-plate welding of 5.0 mm thick plates of S700MC steel by modern Disk laser on the mechanism of steel penetration, shape and depth of penetration, and also on tendency to weld porosity formation. Based on the investigations performed in a wide range of laser welding parameters the relationship between laser power and welding speed, thus heat input, required for full penetration was determined. Additionally the relationship between the laser welding parameters and weld quality was determined.
Protective Coatings in the Power Boilers Used to Incinerate Waste – Fuel Characteristics of Waste as the Source of Energy
Authors: Słania J. , Sacharz – Szewczyk A.
Published: March 2016

A general characteristics of waste management was presented. Municipal waste was characterised and its fuel properties were provided. Numerous thermal processes of waste utilisation were described such as an incinerating process, free-oxygen technology - pyrolysis, technology with oxygen deficiency - gasification and the plasma technology.
Compressive Strength of Steel Frames after Welding with Micro-Jet Cooling
Authors: Hadryś D. , Węgrzyn T. , Piwnik J. , Wszołek Ł. , Węgrzyn D.
Published: March 2016

Low carbon steel weld structures generally exhibit a very linear stress-strain relationship. In the study of strength of materials, the compressive strength is the capacity of a material or structure to withstand loads tending to reduce size of structure. It is mainly measured by plotting applied force against deformation in a testing machine. Compressive strength is a main key value for design of welded structures.The main goal of that paper was analysing of plastic properties of frame welds which were made with various parameters of micro-jet cooling. New technology of micro-jet welding could be regarded as a new way to improve plastic properties of welds. It allows to obtain welds with better mechanical properties in comparison to ordinary welding method. Furthermore it is possible to steering of weld structure and properties of the weld. There were given main information about influence of various micro-jet gases on metallographic and properties of structure steel welds.
Comparative Analysis of Properties and Microstructure of the Plastically Deformed Alloy Inconel®718, Manufactured by Plastic Working and Direct Metal Laser Sintering
Authors: Żaba K. , Puchlerska S. , Kwiatkowski M. , Nowosielski M. , Głodzik M. , Tokarski T. , Seibt P.
Published: March 2016

Nickel superalloys as Inconel® are materials widely used in the aerospace industry among others for diffusers, combustion chamber, shells of gas generators and other. In most cases, manufacturing process of those parts are used metal strips, produced by conventional plastic processing techniques, and thus by hot or cold rolling. An alternative technology allowing for manufacturing components for jet engines is the technique of 3D printing (additive manufacturing), and most of all Direct Metal Laser Sintering, which is one of the latest achievement in field of additive technologies.

The paper presents a comparative analysis of the microstructure and mechanical properties of the alloy Inconel®718 manufactured by plastic working and Direct Metal Laser Sintering technology, in the initial state, after deformation and after heat treatment.
Finite Element Prediction for the Internal Stresses of (Ti,Al)N Coatings
Authors: Żukowska L.W. , Śliwa A. , Mikuła J. , Bonek M. , Kwaśny W. , Sroka M. , Pakuła D.
Published: March 2016

The general topic of this paper is the computer simulation with use of finite element method (FEM) for determining the internal stresses of selected gradient and single-layer PVD coatings deposited on the sintered tool materials, including cemented carbides, cermets and Al2O3+TiC type oxide tool ceramics by cathodic arc evaporation CAE-PVD method.

Developing an appropriate model allows the prediction of properties of PVD coatings, which are also the criterion of their selection for specific items, based on the parameters of technological processes. In addition, developed model can to a large extent eliminate the need for expensive and time-consuming experimental studies for the computer simulation.

Developed models of internal stresses were performed with use of finite element method in ANSYS environment. The experimental values of stresses were calculated using the X-ray sin2ψ technique. The computer simulation results were compared with the experimental results. Microhardness and adhesion as well as wear range were measured to investigate the influence of stress distribution on the mechanical and functional properties of coatings.

It was stated that occurrence of compressive stresses on the surface of gradient coating has advantageous influence on their mechanical properties, especially on microhardness. Absolute value reduction of internal stresses in the connection zone in case of the gradient coatings takes profitably effects on improvement the adhesion of coatings. It can be one of the most important reasons of increase the wear resistance of gradient coatings in comparison to single-layer coatings.
Recognition of Acoustic Signals of Induction Motors with the Use of MSAF10 and Bayes Classfier
Authors: Glowacz A.
Published: March 2016

Condition monitoring of deterioration in the metallurgical equipment is essential for faultless operation of the metallurgical processes. These processes use various metallurgical equipment, such as induction motors or industrial furnaces. These devices operate continuously. Correct diagnosis and early detection of incipient faults allow to avoid accidents and help reducing financial loss. This paper deals with monitoring of rotor electrical faults of induction motor. A technique of recognition of acoustic signals of induction motors is presented. Three states of induction motor were analyzed. Studies were carried out for methods of data processing: Method of Selection of Amplitudes of Frequencies (MSAF10) and Bayes classifier. Condition monitoring is helpful to protect induction motors and metallurgical equipment. Further researches will allow to analyze other metallurgical equipment.
Technology of Welding Joints Mixed with Duplex Steel
Authors: Słania J. , Krawczyk R. , Masłoń D.
Published: March 2016

Results of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.
Influence of Heat Treatment on Abrasive Wear Resistance of Silumin Matrix Composite Castings
Authors: Gawdzińska K. , Bryll K. , Nagolska D.
Published: March 2016

The authors attempted at examining the effect of heat treatment on abrasive wear resistance of metal composite castings. Metal matrix composites were made by infiltrating preforms created from unordered short fibers (graphite or silumin) with liquid aluminium alloy AlSi12(b). Thus prepared composites were subject to solution heat treatment at a temperature of 520°C for four hours, then aging at a temperature of 220°C for four hours. Abrasion resistance of the material was tested before and after thermal treatment.