Estimation of submarine groundwater discharge in Plover Cove, Tolo Harbour, Hong Kong by 222Rn

Algal blooms in Tolo Harbour, Hong Kong have received much attention and submarine groundwater discharge is speculated to be a significant pathway carrying nutrients into the constricted estuary. Plover Cove, a small cove in the Harbour, was selected for SGD analysis using 222Rn budget. The volumetric SGD rates are estimated to be about 8000 m3/day for neap tide and about 17,000 m3/day for spring tide. Result of nutrient analysis of the porewater indicates that the nutrient loading through this pathway is speculated to be crucial for eutrophication in Tolo Harbour. Current practice for the management of algal blooms in Hong Kong, in which nutrient loading through SGD was ignored, has to be reviewed and the control measures of groundwater contamination are obviously required. © 2008 Elsevier B.V. All rights reserved.postprin

Novel D²T control for single-switch dual-output switching power converters

Author name used in this publication: C. K. TseAuthor name used in this publication: S. C. WongAuthor name used in this publication: K. C. TamRefereed conference paper2003-2004 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Dual current-mode control for single-switch two-output switching power converters

Author name used in this publication: S. C. WongAuthor name used in this publication: C. K. TseRefereed conference paper2003-2004 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

An improved wavelet approach for finding steady-state waveforms of power electronics circuits using discrete convolution

Author name used in this publication: Chi K. TseAuthor name used in this publication: Kam C. Tam2005-2006 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Spurious modulation on current-mode controlled dc/dc converters : an explanation for intermittent chaotic operation

Author name used in this publication: S. C. WongAuthor name used in this publication: C. K. TseAuthor name used in this publication: K. C. TamRefereed conference paper2003-2004 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Fast analytical approach to finding steady-state waveforms for power electronics circuits using orthogonal polynomial basis functions

Author name used in this publication: K. C. TamAuthor name used in this publication: S. C. WongAuthor name used in this publication: C. K. TseRefereed conference paper2005-2006 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Eel osmotic stress transcriptional factor 1 (Ostf1) is highly expressed in gill mitochondria-rich cells, where ERK phosphorylated

<p>Abstract</p> <p>Background</p> <p>Osmotic stress transcriptional factor 1 (Ostf1) was firstly identified in tilapia in 2005. Then numerous studies have investigated its regulation and expression profile in fish gill tissues in related to osmoregulation. Generally, hyperosmotic stress induced <it>ostf1 </it>mRNA expression level, however there is no report studying the cellular localization of Ostf1 expression in any osmoregulatory tissue. In this study immunohistochemical (IHC) approach was used to study the cellular localization of Ostf1 in gill cells of Japanese eels.</p> <p>Findings</p> <p>Ostf1 protein was found to be localized in branchial mitochondria-rich/chloride cell (MRC/CC) as revealed by Naα5 and CFTR co-localization. The protein was detectable at day 3 after fresh water to seawater transfer and was mainly localized in MRCs. Moreover, elevated levels of extracellular signal regulated kinase (ERK) phosphorylation was observed at day 3 of the transfer and was co-localized with MRCs.</p> <p>Conclusions</p> <p>Our data identified Ostf1 expression in gill MRCs. The observation supports the role of Ostf1 in osmosensing and/or osmoregulation in fish gills, particularly its functional relationship with MRCs. The observation of the co-expression of pERK and Ostf1 in MRCs suggests a cross-talk mechanism between the mitogen-activated protein kinases (MAPKs) and Ostf1 in response to hyperosmotic challenge. To summarize, this report has addressed the cellular localization of Ostf1 and provides evidence to illustrate the involvement of Ostf1 and ERK on osmosensing and osmoregulatory function of gill MRCs.</p

Diagnostic yield at bronchoscopy samplying in bronchial carcinoma

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Presenting features of bronchial adenocarcinoma in Chinese patients

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Intracerebral haemorrhage complicating anticoagulant therapy among Hong Kong Chinese

PosterBACKGROUND: Anticoagulation is effective to prevent cardioembolism in patients with atrial fibrillation (AF) and prosthetic heart valves, but carries risk of potentially life-threatening intracerebral haemorrhage (ICH). The ideal international normalised ratio (INR) for Chinese patients on warfarin treatment is uncertain. We aimed to study the clinical and radiological characteristics of Chinese patients who developed acute ICH while on warfarin …published_or_final_versio