DSpace Collection:
http://hdl.handle.net/10722/53177
2024-03-28T12:07:50Z
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Cellular tropism of SARS-CoV-2 in the respiratory tract of Syrian hamsters and B6.Cg-Tg(K18-ACE2)2Prlmn/J transgenic mice
http://hdl.handle.net/10722/314492
Title: Cellular tropism of SARS-CoV-2 in the respiratory tract of Syrian hamsters and B6.Cg-Tg(K18-ACE2)2Prlmn/J transgenic mice
Authors: Yen, H; Doak, SAV; Sia, SF; Choy, KT; Peiris, JSM; Wong, HM; Crossland, N; Douam, F; Nicholls, JM
2022-01-01T00:00:00Z
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Indium oxide, tin oxide and indium tin oxide nanostructure growth by vapor deposition
http://hdl.handle.net/10722/145872
Title: Indium oxide, tin oxide and indium tin oxide nanostructure growth by vapor deposition
Authors: Fung, MK; Wong, KK; Chen, XY; Chan, YF; Ng, AMC; Djurišić, AB; Chan, WK
Abstract: Indium oxide, tin oxide and indium tin oxide nanowires have been grown by vapor deposition on Si and quartz substrates. Under the growth conditions used, pure SiO x nanowires, a mixture of SiO x and indium oxide, tin oxide or indium tin oxide nanostructures, or pure indium oxide, tin oxide or indium tin oxide nanostructures could be obtained at different substrate temperatures. The growth mechanism of the obtained nanostructures at different substrate temperatures is discussed. Optical and electrical properties of the deposited pure indium oxide, tin oxide or indium tin oxide nanostructures have been measured, and low sheet resistances on quartz substrates have been obtained for indium oxide and indium tin oxide nanostructures. © 2011 Elsevier B.V. All rights reserved.
2012-01-01T00:00:00Z
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Surgical treatment of penile curvature
http://hdl.handle.net/10722/57415
Title: Surgical treatment of penile curvature; 手術治療陰莖彎曲
Authors: Ho, KL; Yip, AWC; Leung, LS; Law, IC
Abstract: OBJECTIVE: To review long-term efficacy and complications of surgical treatment of penile curvature in a Chinese population. DESIGN: Retrospective review. SETTING: Regional hospital, Hong Kong. PATIENTS. Patients who underwent surgical treatment of penile curvature between January 1997 and March 2005 inclusive. INTERVENTION: Penile curvature corrective surgery. MAIN OUTCOME MEASURES: Penile curvature recurrence, early and late complications. RESULTS: Of 22 patients who underwent surgical treatment of penile curvatures, 19 had congenital and three had acquired diseases. The mean angle of deformity was 52.5 (range, 20-90) degrees. Ten patients had Nesbit procedures, ten had modified Nesbit procedures, and two underwent vein grafting. Twenty patients had residual or recurrent penile curvatures at a mean follow-up of 50.9 months. Fifteen patients had less than 30 degrees curvature and five had 30 to 60 degrees curvature. Early complications included wound infection (n=3), penile skin necrosis (n=1) treated by skin graft, and urethral injury (n=1). Three patients had erectile dysfunction; four complained of glans paraesthesia. Penile shortening (mean, 1.4 cm) and palpable knots were common late complications. A total of 19 patients were satisfied with the final outcomes. CONCLUSIONS: Surgical treatment of penile curvature produces long-term patient satisfaction. Preoperative counselling on potential recurrence and common minor complications is crucial to produce favourable outcomes.
2006-01-01T00:00:00Z
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Interaction of glass-ionomer cements with moist dentin
http://hdl.handle.net/10722/53310
Title: Interaction of glass-ionomer cements with moist dentin
Authors: Yiu, CKY; Tay, FR; King, NM; Pashley, DH; Sidhu, SK; Neo, JCL; Toledano, M; Wong, SL
Abstract: Glass-ionomer cements (GICs) are regarded as aqueous gels made up of polyalkenoic acid salts containing ion-leachable glass fillers. The consequence of water permeation across the GIC-dentin interface is unknown. This study used SEM, field-emission/environmental SEM (FE-ESEM), and TEM to examine the ultrastructure of GIC-bonded moist dentin. Dentin surfaces bonded with 6 auto-cured GICs were examined along the fractured GIC-dentin interfaces. Additional specimens fractured 3 mm away from the interfaces were used as controls. SEM revealed spherical bodies along GIC-dentin interfaces that resembled hollow eggshells. FE-SEM depicted similar bodies with additional solid cores. Energy-dispersive x-ray analysis and TEM showed that the spherical bodies consisted of a silicon-rich GIC phase that was absent from the air-voids in the controls. The GIC inclusions near dentin surfaces result from a continuation of the GI reaction, within air-voids of the original polyalkenoate matrix, that occurred upon water diffusion from moist dentin.
2004-01-01T00:00:00Z