6,123 research outputs found
Grease lubricated spiral groove gyro bearings Final report
Grease lubricated spiral groove bearings suitable for spin axis of gyros in automatic pilot
Research and development of high-performance axial-flow turbomachinery. Volume 3 - Design of backup gas bearings
Gas lubricated bearing system for turbine compresso
High performance turboalternator and associated hardware. 3. Design of backup gas bearings
Turboalternator gas bearing system for spacecraft electric power productio
瑪麗醫院進行腹腔鏡腎臟切除術的早期經驗
OBJECTIVE: To report our early experience of laparoscopic nephrectomy. DESIGN: Prospective data collection. SETTING: Queen Mary Hospital, Hong Kong. PATIENTS: Transperitoneal laparoscopic nephrectomies were performed on 40 patients between July 1997 and December 2002. MAIN OUTCOME MEASURES: Demographic and perioperative data including operating time, blood loss, postoperative pain score, analgesic requirement, complications, time to resume oral intake, ambulatory state, and length of hospital stay. RESULTS: Laparoscopic nephrectomy was performed for 21 solid renal masses, five transitional cell carcinomas, and 14 non-functioning kidneys. Seven (17.5%) patients had previous abdominal surgery. The mean body mass index of the patients was 23.9 kg/m(2) and the mean operating time was 229 minutes. The mean estimated blood loss was 370 mL, and two patients required conversion to open surgery because of intra-operative bleeding. Other complications include diaphragmatic injury, port-site bleeding, chyle leakage, bleeding peptic ulcer, and myocardial ischaemia. The postoperative mean analgesic requirement was 26 mg of morphine sulphate equivalent. The mean time for patients to resume oral diet and full ambulation was 1.3 and 2.8 days, respectively, and the mean length of hospital stay was 6.7 days. The mean diameter of the solid renal tumour was 4.1 cm and the surgical margins of all resected specimen for malignant tumours were negative. CONCLUSION: Laparoscopic nephrectomy is a safe and efficacious approach for resection of benign non-functioning kidneys and malignant renal tumours.published_or_final_versio
Recommended from our members
Development of a Bonner Sphere neutron spectrometer from a commercial neutron dosimeter
Bonner Spheres have been used widely for the measurement of neutron spectra with neutron energies ranged from thermal up to at least 20 MeV . A Bonner Sphere neutron spectrometer (BSS) was developed by extending a Berthold LB 6411 neutron-dose-rate meter. The BSS consists of a 3He thermal-neutron detector with integrated electronics, a set of eight polyethylene spherical shells and two optional lead shells of various sizes. The response matrix of the BSS was calculated with GEANT4 Monte Carlo simulation. The BSS had a calibration uncertainty of ± 8.6% and a detector background rate of (1.57 ± 0.04) × 10−3 s−1. A spectral unfolding code NSUGA was developed. The NSUGA code utilizes genetic algorithms and has been shown to perform well in the absence of a priori information.postprin
Opioid therapy for chronic non-cancer pain: guidelines for Hong Kong
published_or_final_versio
Spiky Strings on I-brane
We study rigidly rotating strings in the near horizon geometry of the 1+1
dimensional intersection of two orthogonal stacks of NS5-branes, the so called
I-brane background. We solve the equations of motion of the fundamental string
action in the presence of two form NS-NS fluxes that the I-brane background
supports and write down general form of conserved quantities. We further find
out two limiting cases corresponding to giant magnon and single spike like
strings in various parameter space of solutions.Comment: 17 pages, major restructuring of text, added a referenc
The impact of SARS on hospital performance
© 2008 Chu et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licens
Dental and periodontal status of 12-year-old Dai school children in Yunnan Province, China: a cross-sectional study
published_or_final_versio
- …