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산업구조 변화와 집계 생산성 추세의 장기 패턴에 관한 연구
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초·중등교원 정보기술 소양의 현수준과 기대수준에 관한 연구
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Non-linear free vibrations and post-buckling analysis of shear flexible functionally graded beams
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MHD nature of ionospheric wave packets generated by the solar terminator
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Co-culture of Corneal Epithelial Cells and Fibroblasts on Lyophilized Amniotic Membrane
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Zn Complex 유도체 합성과 치환기에 따른 특성 연구
- 검색키워드
- 저자 : Maiorano, E. (검색결과 5 건)
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D.W. Maiorano,N. Venugopal,R.A. Haber 한양대학교 세라믹연구소 2007 Journal of Ceramic Processing Research Vol.8 No.4
Two variants of a nanoparticulate titania were investigated for their rheological behavior. These powders were synthesized via a sulfuric acid process, where modification of particular parameters resulted in powders varying in residual sulfate level. It was assumed that residual sulfate would affect the agglomerate structure of suspensions of these powders. These powders were washed with distilled deionized water to remove as much residual soluble sulfate as possible and the supernatant tested for sulfate level and pH. Microstructural and rheological behavior of the powders were examined as a function of number of washes. The rheological yield point was determined to increase with number of washes and in turn increase with decreased residual sulfate level. Two variants of a nanoparticulate titania were investigated for their rheological behavior. These powders were synthesized via a sulfuric acid process, where modification of particular parameters resulted in powders varying in residual sulfate level. It was assumed that residual sulfate would affect the agglomerate structure of suspensions of these powders. These powders were washed with distilled deionized water to remove as much residual soluble sulfate as possible and the supernatant tested for sulfate level and pH. Microstructural and rheological behavior of the powders were examined as a function of number of washes. The rheological yield point was determined to increase with number of washes and in turn increase with decreased residual sulfate level.
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Diego Moniaci,Francesco Maiorano,Federica Corrado 대한혈관외과학회 2022 Vascular Specialist International Vol.38 No.4
Iliac artery rupture is a demanding complication that can occur during endovascular procedures, particularly when large-caliber introducers are required. We present the first case in the literature on the endobypass technique, a quick and effective reconstruction method for the iliofemoral axis. This clinical case highlights that thoracic endovascular aortic repair procedures require large-caliber introducers into the femoral and iliac arteries to allow passage of the delivery system. These arteries may be diseased, representing a high risk of rupture. In our case, placing a 20 Fr introducer, the iliac artery ruptured bilaterally. Therefore, we performed an endobypass deploying Viabahn stent-grafts into the common iliac artery and manually performed distal anastomosis on the femoral bifurcation.
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THESEUS: A key space mission concept for Multi-Messenger Astrophysics
Stratta, G.,Ciolfi, R.,Amati, L.,Bozzo, E.,Ghirlanda, G.,Maiorano, E.,Nicastro, L.,Rossi, A.,Vinciguerra, S.,Frontera, F.,Gö,tz, D.,Guidorzi, C.,O’Brien, P.,Osborne, J.P.,Tanvir, N.,Branchesi, M. Elsevier 2018 ADVANCES IN SPACE RESEARCH Vol.62 No.3
<P><B>Abstract</B></P> <P>The recent discovery of the electromagnetic counterpart of the gravitational wave source GW170817, has demonstrated the huge informative power of multi-messenger observations. During the next decade the nascent field of multi-messenger astronomy will mature significantly. Around 2030 and beyond, third generation ground-based gravitational wave detectors will be roughly ten times more sensitive than the current ones. At the same time, neutrino detectors currently upgrading to multi km<SUP>3</SUP> telescopes, will include a 10 km<SUP>3</SUP> facility in the Southern hemisphere. In this review, we describe the most promising sources of high frequency gravitational waves and neutrinos that will be detected in the next two decades. In this context, we show the important role of the <I>Transient High Energy Sky and Early Universe Surveyor</I> (THESEUS), a mission concept accepted by ESA for phase A study and proposed by a large international collaboration in response to the call for the Cosmic Vision Programme M5 missions. THESEUS aims at providing a substantial advancement in early Universe science as well as in multi–messenger and time–domain astrophysics, operating in strong synergy with future gravitational wave and neutrino detectors as well as major ground- and space-based telescopes. This review is an extension of the THESEUS white paper (Amati et al., 2017), also in light of the discovery of GW170817/GRB170817A that was announced on October 16th, 2017.</P>
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J. Carbajo,J. M. Molina,S. Kim,L. P. Maiorano,S. Ghaffari Mosanenzadeh,N. X. Fang 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.4
Several porous materials, especially natural fibres and polyurethane foams, are frequently used as sound absorbers in multiplenoise reduction applications. Notwithstanding their excellent absorption performance, these materials usually lack thestructural strength and fire resistance required for use in aggressive environments or situations requiring structural stability. This paper proposes the design of open-pore polymer and aluminum cellular materials with non-stochastic structures forsound absorption. These materials were fabricated using additive manufacturing (polymeric materials) and the replicationmethod (aluminum materials), which involves infiltrating porous preforms formed by compacting spheres of a martyr material,such as NaCl, with liquid aluminum. The proposed materials can be employed as a resonator system when backed byan air cavity, with the change in cavity depth used to tune its sound absorption peak. Following the standard ASTM E1050,the sound absorption of these materials was investigated. In addition, the sound absorption performance of the materialswas predicted using an Equivalent Circuit Method model. The experimental results are consistent with those predicted bythe model, highlighting the potential of the microstructural and configurational design of these materials as sound absorbers.
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Flexible distributed Bragg reflectors as optical outcouplers for OLEDs based on a polymeric anode
Prontera Carmela Tania,Pugliese Marco,Giannuzzi Roberto,Carallo Sonia,Esposito Marco,Gigli Giuseppe,Maiorano Vincenzo 한국정보디스플레이학회 2021 Journal of information display Vol.22 No.1
Top-emitting OLEDs (TOLEDs) represent a promising technology for the development of nextgeneration flexible and rollable displays, thanks to their improved light outcoupling and their compatibility with opaque substrates. Metal thin films are the most used electrodes for the manufacturing of TOLEDs, but they show poor resistance to mechanical deformation, which compromises the long-term durability of flexible devices. This paper reports the exploitation of a dielectric mirror (DBR) based on seven pairs of TiO2 and SiO2 combined with a polymeric electrode as an alternative to the bottom metal electrode in flexible TOLEDs. The DBR showed a maximum reflectivity of 99.9% at about 550 nm, and a stop-band width of about 200 nm. The reflectivity remained unchanged after bending and treatment with water and solvents. Green TOLED devices were fabricated on top of DBRs, and demonstrated good stability in terms of electro-optical and colorimetric characteristics, according to varying viewing angles. These results demonstrate that the combination of the flexible DBR with the polymeric anode is an interesting strategy for improving the durability of flexible TOLEDs for display applications, implemented on different kinds of free-standing ultra-thin substrates.
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