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RISS 인기검색어
- 검색키워드
- 저자 : Chua H. S. (검색결과 4 건)
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Geotextile Bags and Tubes for Beach and Riverbank Restoration
S. H. Chew,C. Y. Tan,K. E. Chua,W. H. Ho 한국토목섬유학회 2011 한국토목섬유학회 학술발표회 Vol.2011 No.11
There is an increasing popularity on the use of geotextile tubes and bags for different sizes and shapes for coastal, beach and river bank application in this region over the last 10 years. These geotextile bags, tubes, and containers are basically functioned as either a gravity mass as part of containment bunds; or massive surface protection for beach stabilization and restoration, or vegetated erosion control slope protection for river bank and riverfront; or a mean of dewatering of soft sediments contained inside. This paper summarizes the two recent projects in Singapore and Malaysia: (a) Beach restoration using specially designed geotextiles bags, and (b) Riverfront restoration using combination of geotextiles tubes and bags. It highlights the innovative and cost effective solution in these applications. For the beach restoration project in Singapore, stacked geotextile bags have been used to reconstruct the eroded shoreline due to the wave action on the beaches along the east coast of Singapore. For the riverfront project that involved reclamation and slope protection in Malaysia, geotextile tubes and bags are used as an alternative design to the conventional armor rock system and anchored bulkhead.
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Michelle H. Chua,Ajith J. Thomas,Matthew R. Fusco,Christopher S. Ogilvy 대한뇌혈관외과학회 2014 Journal of Cerebrovascular and Endovascular Neuros Vol.16 No.4
Variations of the anterior cerebral artery-anterior communicating arterycomplex are commonly identified in aneurysm surgery. An infraopticcourse of the anterior cerebral artery is exceedingly rare. Robison first describedthis anomaly from an anatomic dissection in 1959. A unilateralanomalous infraoptic anterior cerebral artery is more common than anomaliesof bilateral infraoptic anterior cerebral arteries. We present the case of anunruptured aneurysm at the anterior communicating artery in a patientwith bilateral infraoptic anterior cerebral arteries, identified by computedtomography angiography and verified during surgery. Implications foraneurysm formation and surgical treatment are discussed.
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The metaphyseal sleeve: an unexplored option in the treatment of complex primary knee osteoarthritis
Wong W. K.,Chua H. S. 대한슬관절학회 2020 대한슬관절학회지 Vol.32 No.-
Background: In an ever-aging society that as a whole has become more affluent, significant emphasis has been accorded to an improved quality of life. Knee osteoarthritis is ever-increasingly treated with total knee arthroplasty. The benefits and satisfaction experienced by those who have undergone total knee replacements (TKR) are well documented in the literature. The issue arises when osteoarthritis of the affected knee is more complex than simple osteoarthritis, i.e. the patient has complex primary osteoarthritis. This collective term encompasses conditions such as massive bone loss, ligamentous laxity, coronal defects and those with contractures. There are various classifications to describe massive bone loss but we utilized the Anderson Orthopaedic Research Institute (AORI) classification. Numerous treatment options are available and we report the use of metaphyseal sleeves as a highly successful treatment option. Methods: We retrospectively reviewed all the patients at our centre who underwent primary TKR using the metaphyseal sleeves. Patients were assessed on symptoms and functional status, and radiographs were also taken to assess for osseointegration. Only patients who completed 2 years of follow up were included in our study. Results: The updated (2011) Knee Society Score (KSS) was used in conjunction with radiological assessments at each follow up. Mean KSS scores improved from 53.83 preoperatively to 193.39 postoperatively. All patients demonstrated increasing osseointegration throughout follow up. Conclusion: The metaphyseal sleeve is an excellent treatment option for complex primary osteoarthritic knees with good results objectively, functionally and radiologically and would be a great choice for all orthopaedic surgeons to include in their armamentarium.
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