814 research outputs found
A surgeon's journey: Innovating cancer care through science, dreams and hope (Chancellor's Lecture Series)
No full textThe 2018 Chancellor’s Lecture was presented by Professor Peter Choong on 16 August 2018. Professor Choong (St Vincent’s Hospital and Peter MacCallum Cancer Centre) is a world-leading cancer surgeon and pioneer in limb-sparing surgery. Entitled A surgeon’s journey: Innovating cancer care through science, dreams and hope, Professor Choong offered a compassionate perspective into what it means to operate at the forefront of medical innovation that is changing lives. From bedside to breakthrough; how has technology enhanced cancer care? And what does the future look like for those affected by bone and soft tissue cancers
Appendices_online_supp – Supplemental material for Exploring the Impact of Quality of Life on Survival: A Case Study in Total Knee Replacement Surgery
No full textSupplemental material, Appendices_online_supp for Exploring the Impact of Quality of Life on Survival: A Case Study in Total Knee Replacement Surgery by Michelle Tew, Kim Dalziel, Michelle Dowsey, Peter F. Choong and Philip Clarke in Medical Decision Making</p
Sertoli-Leydig cell tumor of the ovary, a rare cause of precocious puberty in a 12-month-old infant
No full textChoong, Catherine S ; Fuller, Peter J ; Chu, Simon ; Jeske, Yvette ; Bowling, Francis ; Brown, Richard ; Borzi, Peter ; Balazs, Nicholas D ; Suppiah, Ram ; Cotterill, Andrew M ; Payton, Diane ; Robertson, David M ; Burger, Henry
Supplemental Material - The impact of cost on quality of surgical management in non-metastatic extremity sarcoma: A cross-country narrative literature review with a systematic approach
No full textSupplemental Material for The impact of cost on quality of surgical management in non-metastatic extremity sarcoma: A cross-country narrative literature review with a systematic approach by Timothy Kuek, Chris G Schilling, and Peter F Choong in Journal of Orthopaedic Surgery.</p
Development of titanium-based scaffolds for spinal prosthesis
No full textThe author was selected to join Assistant Professor Cleo Choong research group together with a collaboration project with Singapore Institute of Manufacturing Technology, Singapore for his Final Year Project with the project title as “Development of Titanium-based Scaffolds for Spinal Prosthesis”. Throughout this project, the author was under the guidance of Assistant Professor Cleo Choong as School of Materials Science & Engineering supervisor, Nanyang Technological University as well as Dr. He Zeming and Dr. Saeed Maleksaeedi as direct institute supervisors.
During this 1-year of research work, the author had been exposed to various types of learning experiences as well as hands-on opportunities for example seeing how the research milestones were planned and taking charged of carrying it out, using different types of characterisation testing machines such as Instron materials characterisation machine, Stylus Profilometer (Taylor-Hobson Form Talysurf Series 2) etc., understanding various process flows required in a research in order to link up all the research data and results via program used for data analysis.
Lastly the experience gained had enabled the author to further enhance his technical knowledge, develop a better safety culture as well as make learning a more enjoyable and fun journey. Besides, the author experienced culture differences as he worked together with exchange students from University of Sydney, Australia, improving his communication skills in the process.Bachelor of Engineering (Materials Engineering
Sertularella pacifica Choong, 2015, sp. nov.
No full text<i>Sertularella pacifica</i> sp. nov. <p>(Figure 6)</p> <p> <i>Sertularella fusiformis</i> — Torrey, 1902: 61, pl. 6, fig. 53–54.— Fraser, 1937: 153, pl. 34, fig. 181 [not <i>Sertularella fusiformis</i> (Hincks, 1861)]</p> <p> <b>Material</b>. <b>Holotype:</b> CANADA: British Columbia. Vancouver Island, Juan de Fuca Strait, Race Rocks, 48˚18’00”N, 123˚32’00”W, 0 5. iv.1986, 6–10 meters, two short hydrocauli, with gonothecae, coll. A. Brinckmann- Voss, ROMIZ B670. <b>Paratype:</b> CANADA: British Columbia. Queen Charlotte Land District. Masset Harbor, 14. ix.1935, without gonothecae, ROMIZ B4065. <b>Other material:</b> CANADA: British Columbia. Queen Charlotte Land District. Masset Harbor, 54˚03’00”N, 132˚13’00”W, 14. ix.1935, colony arising from stolon at the base of <i>Abietinaria pulchra</i> (Nutting, 1904) colony, without gonothecae, ROMIZ B4066. CANADA: British Columbia. Queen Charlotte Land District. Masset Harbor, 14. ix.1935, two short hydrocauli, without gonothecae, ROMIZ B4067. CANADA: British Columbia. Queen Charlotte Land District. Masset Harbor, 14. ix.1935, colony arising from stolon at the base of <i>Sertularia</i> sp.colony, without gonothecae, ROMIZ B4068. CANADA: British Columbia. Queen Charlotte Land District. Masset Harbor, 54˚03’00”N, 132˚13’00”W, 14. ix.1935, hydrocauli, without gonothecae, ROMIZ B4069.</p> <p> <b>Reported distribution</b>. California: San Francisco, as <i>Sertularella fusiformis</i> (Hincks, 1861) (Torrey, 1902). Oregon: Three locations off Heceta Head, 0–113 meters (Fraser, 1937).</p> <p> <b>Description.</b> Colonies erect, hydrorhiza stolonal, occasionally anastomosing. Hydrocaulus geniculate, unbranched. Perisarc thickened throughout, up to 60 mm thick. Hydrocaulus monosiphonic, unfascicled, divided into internodes. Internodes 1003–1530 mm long, with one to three (usually two) complete annulations basally; proximal-most annulation often spirally twisted (Fig. 3 A,B). Internode has tendency to spiral relative to main axis. Single hydrotheca distal to internode. Hydrothecae alternate, often not on same plane (Fig. 3 A). Hydrotheca tubular, walls asymmetrical; abcauline and adcauline wall slightly swollen basally, swelling on abcauline wall more proximal. Perisarc of hydrothecae thickened, up to 60 mm thick. Distal half of hydrotheca narrowed towards aperture, greater narrowing on abcauline side. Adcauline hydrothecal wall adnate for approximately 1/4–1/2 of length. Hydrothecal margin dentate with four equally-developed cusps; one adcauline, one abcauline, and two laterals. Opercular flaps triangular, four present; when closed forms roof extending slightly beyond opercular margin. Intrathecal cusps present, three in number, occasionally missing; two small intrathecal cusps proximal to and flanking adcauline marginal cusp, one long and narrow intrathecal cusp on abcauline side (Fig 3 A).</p> <p>Gonothecae (♂) few, attached to internode or directly below base of hydrotheca; large, up to three-times longer than hydrothecae, spindle-shaped, widest medially, longer than wide, flexed or bent mid-axis. Gonothecal body strongly annulated throughout; 10–12 complete, well-developed annulations. Neck short or barely discernible, four low rounded cusps around gonothecal aperture. Occasionally, one of the four cusps may be more developed than other three.</p> <p> <b>Differential diagnosis</b>. The records from the west coast of North America (Torrey 1902; Fraser 1937) seem to be morphologically distinct from descriptions of <i>S. fusiformis</i> elsewhere as shown by the absence of four intrathecal cusps and the presence of two annulations at the base of the internodes. These descriptions correspond to the specimens examined by the author in this study. Given the variability of the species included in the <i>S. fusiformis</i> / <i>S.ellisii</i> complex, this species was most likely misidentified as <i>S. fusiformis</i>. Measurements of the internodes, hydrothecae, and gonothecae (Table 4) show that these specimens are much larger than <i>S. fusiformis</i>. The intrathecal cusps are never as well-developed as in <i>S. fusiformis.</i> Moreover, the hydrothecae of <i>Sertularella pacifica</i> <b>sp. nov.</b> lack the considerably swollen basal portion and strongly tapered upper portion characteristic of the fusiform hydrothecal shape, and the gonothecae are distinct from those belonging to <i>S. fusiformis</i> in being spindle-shaped and bent around their mid-axis.</p> <p> <b>Remarks</b>. This material agrees with the hydroids attributed to <i>Sertularella fusiformis</i> (Hincks, 1861) from the west coast of North America by Torrey (1902), and subsequently included in reports by Fraser (1911, 1937). <i>Sertularella fusiformis</i> is well distributed in temperate and subtropical parts of the Atlantic as well as in the Mediterranean, but records of occurrences elsewhere are few and dispersed (Ramil <i>et al</i>. 1992). The latter are from the Indian Ocean coast of South Africa (Millard 1975) and from the Pacific coast of North America: Californian Pacific coast (Fraser 1911); off Heceta Head, Oregon (Fraser 1937). I consider the reports of <i>Sertularella fusiformis</i> from the Pacific coast of North America to be erroneous. Its biogeographic distribution, and the distinct morphological characteristics of <i>Sertularella pacifica</i> set this species apart from its congeners. Even within the Atlantic, it is probable that the nominal species <i>Sertularella fusiformis</i> is part of a species complex. <i>Sertularella fusiformis</i>, along with <i>S. mediterranea</i>, <i>S. ellisii</i>, <i>S. ornata</i>, and <i>S. polyzonias</i> are morphologically similar and so have been variously kept separate or synonymised with other taxa (Cornelius 1979; Ramil <i>et al.</i> 1992; Medel & Vervoort 1998). Millard (1958) considered <i>S. fusiformis</i> to be a variable species, but accepted the diagnostic value of the presence of 4 intrathecal cusps that alternate with the marginal cusps in this species, a view shared by Corrales <i>et al.</i> (1980). Others, such as Picard (1956) considered <i>S. fusiformis</i> to be an extreme, Atlantic form of <i>S. ellisii</i>. 16S genetic data has provided evidence that nominal species of <i>Sertularella fusiformis</i> from Madeira and the Azores in the North Atlantic fall into distinct clades likely corresponding to different species (Moura <i>et al.</i> 2011).</p> <p> <b>Etymology</b>. The species name refers to the Pacific Ocean and emphasizes its distinctiveness from its congeners elsewhere.</p>Published as part of <i>Choong, Henry H. C., 2015, Hydroids of the genus Sertularella (Cnidaria: Hydrozoa: Sertulariidae) from the Pacific coast of Canada in the collection of the Royal Ontario Museum, with descriptions of four new species, pp. 387-408 in Zootaxa 3925 (3)</i> on pages 399-400, DOI: 10.11646/zootaxa.3925.3.4, <a href="http://zenodo.org/record/236318">http://zenodo.org/record/236318</a>
Correction: article on C-Jun and the progression of osteosarcoma: proof in an orthotopic spontaneously metastasizing model
No full textPoints out the differences and the similarities between two articles.
Correction to the article: Dass CR, Khachigian LM, Choong PFM. C-Jun is critical for the progression of osteosarcoma: Proof in an orthotopic spontaneously metastasizing model. Mol Cancer Res 2008;6:1289–9
The personal library and indexing management information system (PLIMIS) / Choong Wai Kit
No full textThe Personal Library and Indexing Management Information System (PLIMIS) is an information system used to organize and manage personal collections of reading materials such as books, journals, journal articles, magazines, articles, dictionaries and CD-ROMs. The system allows easy searching and retrieving of the items in the collections as it adopts a systematic classification and indexing for the reading materials. This will save the time in searching a specific item. PLIMIS is designed for personal use and contains most of the features in the current library information systems. It provides user friendly interface and help to the users for easy using and understanding. The systems are divided into two models, administrator mode and user mode. The administrator is allowed to add delete the information of reading materials and also add or delete users in the database. The Users authorized people who can search and retrieve data from the system after a successful login. Title indexing is used for searching and retrieving of records. The Dewey decimal classification with author indexing are used for arranging and placing of reading materials on the shelves for easy finding. The searching methods which can be used are by title, subject and author. All the related reading materials will be displayed for the user in a sorted form. The methodology of developing PLIMIS is based on the software prototyping, model. This system will be developed using Microsoft Visual Basic 6.0, Microsoft Access 97 as it database and Seagate Crystal Report 7 to generate report
The Application for Church Planting Through the Intercessory Prayer Ministry of Young Adult Ministry in Choong Hyun Presbyterian Church
No full textThe purpose of this thesis is about researching church planting through the intercessory prayer ministry. This project describes several spiritual awakenings through this ministry. The most important result of spiritual awakenings is that skeptical believers in spiritual life have been changed into positive ones and passive believers have been transformed into active ones. Actually the author as an assistant pastor ministered in Choong hyun Presbyterian Church for almost five years. His wife and he led this ministry for one and half years. The author tried to find out the biblical background related to intercessory prayer through the New Testament, write the material for small group, and mention lists for intercessory prayer ministry. Finally he makes application for church planting through the intercessory prayer ministry
A parallel input composite transimpedance amplifier
No full textA new approach to high performance current to voltage preamplifier design is presented. The design using multiple operational amplifiers (op-amps) has a parasitic capacitance compensation network and a composite amplifier topology for fast, precision, and low noise performance. The input stage consisting of a parallel linked JFET op-amps and a high-speed bipolar junction transistor (BJT) gain stage driving the output in the composite amplifier topology, cooperating with the capacitance compensation feedback network, ensures wide bandwidth stability in the presence of input capacitance above 40 nF. The design is ideal for any two-probe measurement, including high impedance transport and scanning tunneling microscopy measurements. © 2018 Author(s)
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