1,724,822 research outputs found
The Deformation And Recrystallization Behavior Of 1050 And 8006 Aluminium
No full textTez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2006Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2006Alüminyum ve alaşımları endüstride, birim yoğunluğa göre yüksek mukavemet oranı, yüksek ısı ve elektrik iletim oranı ve mükemmel korozyon dayanımları nedeniyle tercih edilmektedir. Sürekli döküm tekniği alüminyum levha üretiminde tüm dünyada sıklıkla kullanılan bir yöntemdir. Bir çok endüstriyel uygulamada soğuk haddelenmiş alüminyum ürünleri kullanılmaktadır. Bu çalışmada, sürekli döküm tekniği ile üretilmiş 1050 ve 8006 kalite alüminyumun soğuk haddeleme ve yeniden kristalleşme davranışları incelenmiştir. 1050 ve 8006 alüminyumun soğuk haddeleme sırasındaki deformasyon sertleşmesi davranışı Holloman eşitliği ile sırasıyla şu şekilde ifade edilebilir, σy = 147,45 x ε0,0952 (N/mm2), σy = 119,43 x ε0,1497 (N/mm2). %20 ila % 80 arasında uygulanan deformasyon sonrasında yapılan yeniden kristalleşme tavlamasında, yeniden kristalleşme aktivasyon enerjisi 1050 alüminyum için 25–30 kJ/mol ve 8006 alüminyum için 35–40 kJ/mol olarak bulunmuştur.Aluminium and its alloys are widely used engineering materials owing to their improved specific strength, high thermal and electrical conductivity and excellent corrosion resistance in many aggressive media. Continous casting is widely used manufacturing technique of flat products all over the world. Cold rolled aluminium sheet is used in many industrial applications. In this study, the cold rolling and recrystallization behaviors of 1050 and 8006 quality aluminium produced by continous casting route has been examined. According to Holloman Equation the deformation strengthening of 1050 and 8006 aluminium, was expressed as σy = 147,45 x ε0,0952 (N/mm2), σy = 119,43 x ε0,1497 (N/mm2), respectively. In the deformation range between 20% and 80%, the recrystallization activation energy was found as 25-30 kJ/mol for 1050 aluminium alloy and 35-40 kJ/mol for 8006 kJ/mol.Yüksek LisansM.Sc
Linked collectors and determiners for: A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species.
No full textNatural history specimen data linked to collectors and determiners held within, "A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/9cb3ea96-0ee4-40b4-8006-19b5fed80b46">https://bionomia.net/dataset/9cb3ea96-0ee4-40b4-8006-19b5fed80b46</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9cb3ea96-0ee4-40b4-8006-19b5fed80b46">https://gbif.org/dataset/9cb3ea96-0ee4-40b4-8006-19b5fed80b46</a>. Formatted as a Frictionless Data package
Corrosion behaviour of twin-roll cast 8006 aluminium alloy foil with different thicknesses for the food packaging industry
No full textPurpose The purpose of this paper is to investigate and find out the surface and electrochemical behaviours of twin roll cast (TRC) 8006 aluminium alloy with different thicknesses due to the cold rolling rates after the TRC process. Design/methodology/approach The 8006 aluminium alloys are mostly used for the food packaging industry, as they are corrosion resistant, lightweight and shapable materials. The present work investigates the surface and corrosion behaviours of 8006 aluminium alloys at different thicknesses. TRC aluminium alloys were cold-rolled at two different reduction rates before investigation. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDX) tests were used to examine the phase and elemental analyses. FE-SEM and 3D profilometry also used to observe surface morphology. Open circuit potential (OCP), potentiodynamic polarization and electrochemical impedance spectroscopy tests (EIS) were carried out to find out corrosion behaviours. The results show that the more cold rolling reduction (CRR), the more corrosion rate and surface affection of the TRC 8006 aluminium alloys. Findings According to the electrochemical tests (OCP, potentiodynamic polarization test and EIS) and surface morphology results (such as SEM, 3D profilometry and XRD) the more the rolling rate the less the corrosion resistance. Originality/value First corrosion behaviour investigation of twin-rolled 8006 Al alloys using electrochemical techniques. First investigation of CRR effects on electrochemical corrosion behaviour of 8006 Al alloys with 3.5 wt.% NaCl solution using EIS. First investigation of 8006 Al alloys as a food packaging material with electrochemical ways
Linked collectors and determiners for: Lichens from Russian Fennoscandia.
No full textNatural history specimen data linked to collectors and determiners held within, "Lichens from Russian Fennoscandia". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/bc5f47f3-8006-4039-b454-9d25348b6e3f">https://bionomia.net/dataset/bc5f47f3-8006-4039-b454-9d25348b6e3f</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/bc5f47f3-8006-4039-b454-9d25348b6e3f">https://gbif.org/dataset/bc5f47f3-8006-4039-b454-9d25348b6e3f</a>. Formatted as a Frictionless Data package
Corrosion behaviour of twin-roll cast 8006 aluminium alloy foil with different thicknesses for the food packaging industry
Full text linkDesign/methodology/approach: The 8006 aluminium alloys are mostly used for the food packaging industry, as they are corrosion resistant, lightweight and shapable materials. The present work investigates the surface and corrosion behaviours of 8006 aluminium alloys at different thicknesses. TRC aluminium alloys were cold-rolled at two different reduction rates before investigation. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDX) tests were used to examine the phase and elemental analyses. FE-SEM and 3D profilometry also used to observe surface morphology. Open circuit potential (OCP), potentiodynamic polarization and electrochemical impedance spectroscopy tests (EIS) were carried out to find out corrosion behaviours. The results show that the more cold rolling reduction (CRR), the more corrosion rate and surface affection of the TRC 8006 aluminium alloys. Findings: According to the electrochemical tests (OCP, potentiodynamic polarization test and EIS) and surface morphology results (such as SEM, 3D profilometry and XRD) the more the rolling rate the less the corrosion resistance. Originality/value: First corrosion behaviour investigation of twin-rolled 8006 Al alloys using electrochemical techniques. First investigation of CRR effects on electrochemical corrosion behaviour of 8006 Al alloys with 3.5 wt.% NaCl solution using EIS. First investigation of 8006 Al alloys as a food packaging material with electrochemical ways
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
[Atlanta & St. Andrews Bay Rwy Co., Engine Drawing Card, Sketch No. 8006]
No full textThis engine drawing card was created for the Atlanta & St. Andrews Bay Railway Company, Class 10-34 E. Section J-10-E. Sketch 8006. Copy Spec. 28D-35
California Poll: 8006 -- October 15-18, 1980
No full textThe Field Poll, established in 1945 as The California Poll by Mervin Field, has operated continuously as an independent, non-partisan, media-sponsored public opinion news service. Each year the Field Polls cover a wide range of political and social topics examining California public opinion. Continuing measures are made of voter support for leading political figures vying for major state and federal offices, job ratings of important political figures and reactions to significant political eve
nts. Voter awareness, understanding and predispositions of major campaign issues and salient statewide ballot propositions are also tracked over time. For poll 8006 N=1018
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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