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RISS 인기검색어
- 검색키워드
- 저자 : Andrew Hayes (검색결과 4 건)
- 무료
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- 유료
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Hay, Andrew,Parlane, Robert Sustainable Building Research Center 2010 International journal of sustainable building tech Vol.1 No.1
The Centre for Excellence is being designed as a highly innovative, two-storey multi-purpose facility that will provide essential trades and technology training and professional development to students in British Columbia, Canada and beyond. The building will support a syllabus with a focus on sustainable building technologies and processes, and the development and application of alternative and renewable energy. Design work and construction will be completed in time for the building to open in April 2011. The Centre for Excellence will also host an incubator organization to provide tenancy space for start-up innovation and research companies specializing in sustainable technologies. This building project is unique from a number of perspectives. It is aimed at attaining the highest standard of sustainable building design, namely the Living Building Challenge. Further, the building itself will become an essential element of the educational programs that will reside there, mainly focused on building trades and engineering technologies. In addition, the Okanagan Research Innovation Centre will be incorporated into the building, providing opportunities for start-up companies to develop and prototype new green technologies in a supportive and synergistic environment. Finally, this building is being constructed in the somewhat challenging climatic regime of the Okanagan region of Canada. The most important element of this project is that is will demonstrate that the Living Building Challenge is achievable at a cost comparable to conventional building design. The paper will focus on how this ambitious goal will be attained along with the numerous unique aspects that have been incorporated into the building design.
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Plasmon-Coupled CdSe/ZnS and CdTe/CdS/ZnS Coreshells for Hybrid Light Emitting Devices
Rice, Quinton,Hayes, Anderson,Jung, Sungsoo,Wang, Andrew,Cho, Hyoyoung,Kim, Wan-Joong,Yu, William,Abdel-Fattah, Mahmoud,Tabibi, Bagher,Seo, Jaetae American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.2
<P>Plasmon-coupled CdSe/ZnS and CdTe/CdS/ZnS coreshells are investigated for their optoelectronic applications because of their high color purity, wide optical tunability, large PL enhancement, and compact and easy integration into electronic devices. The quantum confinement of carriers within quantum dots (QDs) with sizes near the exciton Bohr radius (CdSe similar to 5.8 nm, CdTe similar to 7 nm) exhibits the features of discrete energy states and blue -shift from the bulk bandgap (CdSe 718 nm, CdTe 863 nm) in the optical spectrum. While the fluorescence from the QDs is attributable to the exciton carrier recombination, large PL enhancement and fast emission time is achieved through plasmonexciton coupling via the Coulomb interaction, Large PL enhancement of QDs in the vicinity of plasmonic particles was observed and attributed to the reduction of the non-radiative decay rate and large local field enhancement. The large PL enhancement and wide optical tunability along with high color purity from plasmon-coupled QDs enables the realization of hybrid LEDs.</P>
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Eugene Pak-Lin Ng,Andrew Siu-Leung Yip,Keith Hay-Man Wan,Michael Siu Hei Tse,Kam Kwong Wong,Tik-Koon Kwok,Wing Cheung Wong 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.2
Study Design: A retrospective review of patients who underwent 2-level anterior cervical discectomy and fusion (ACDF) with stand-alone polyetheretherketone (PEEK) cages for cervical spondylotic myelopathy (CSM). Purpose: To evaluate the efficacy of stand-alone PEEK cage in 2-level cervical interbody fusion for CSM. Overview of Literature: ACDF is a standard surgical procedure to treat degenerative disc disease. However, the use of additional anterior plating for 2-level ACDF remains controversial. Methods: We reviewed outcomes of patients who underwent 2-level ACDF with stand-alone PEEK cages for CSM over a 7-year period (2007–2015) in a regional hospital. Japanese Orthopaedic Association (JOA) score, fusion rate, subsidence rate, cage migration, and cervical alignment by the C2–7 angle as well as the local segmental angle (LSA) of the cervical spine were assessed. Results: In total, 31 patients (mean age, 59 years; range, 36–87 years) underwent 2-level ACDF with a cage-only construct procedure between 2007 and 2015. The minimum follow-up was 24 months; mean follow-up was 51 months. C3–5 fusion was performed in 45%, C4–6 fusion in 32%, and C5–7 fusion in 23%. Mean JOA score improved from 10.1±2.2 to 13.9±2.1 (p<0.01) at the 24-month follow-up. Fusion was achieved in all patients. Subsidence occurred in 22.5% of the cages but was not associated with differences in JOA scores, age, sex, or levels fused. Lordosis of the C2–7 angle and LSA increased after surgery, which were maintained for up to 1 year but subsequently disappeared after 2 years, yet the difference was not statistically significant. No cage migration was noted; two patients developed adjacent segment disease requiring posterior laminoplasty 3 years after ACDF. Conclusions: The use of a stand-alone PEEK cage in a 2-level cervical interbody fusion achieves satisfactory improvements in both clinical outcomes and fusion.
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Comparison of dimensional accuracy between direct-printed and thermoformed aligners
Nickolas Koenig,Jin-Young Choi,Julie McCray,Andrew Hayes,Patricia Schneider,Ki Beom Kim 대한치과교정학회 2022 대한치과교정학회지 Vol.52 No.4
Objective: The purpose of this study was to evaluate and compare the dimensional accuracy between thermoformed and direct-printed aligners. Methods: Three types of aligners were manufactured from the same reference standard tessellation language (STL) file: thermoformed aligners were manufactured using Zendura FLXTM (n = 12) and Essix ACETM (n = 12), and direct-printed aligners were printed using Tera HarzTM TC-85DAP 3D Printer UV Resin (n = 12). The teeth were not manipulated with any tooth-moving software in this study. The samples were sprayed with an opaque scanning spray, scanned, imported to Geomagic® Control XTM metrology software, and superimposed on the reference STL file by using the best-fit alignment algorithm. Distances between the aligner meshes and the reference STL file were measured at nine anatomical landmarks. Results: Mean absolute discrepancies in the Zendura FLXTM aligners ranged from 0.076 ± 0.057 mm to 0.260 ± 0.089 mm and those in the Essix ACETM aligners ranged from 0.188 ± 0.271 mm to 0.457 ± 0.350 mm, while in the direct-printed aligners, they ranged from 0.079 ± 0.054 mm to 0.224 ± 0.041 mm. Root mean square values, representing the overall trueness, ranged from 0.209 ± 0.094 mm for Essix ACETM, 0.188 ± 0.074 mm for Zendura FLXTM, and 0.140 ± 0.020 mm for the direct-printed aligners. Conclusions: This study showed greater trueness and precision of direct-printed aligners than thermoformed aligners.
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