BACKGROUND Several modifications have been introduced to laparoscopic cholecystectomy (LC). The three-port technique has been practiced on a limited scale. Our aim was to compare the three-port and four-port LC in acute (AC) and chronic cholecystitis (CC). METHODS The medical records of 495 patients who underwent LC between September 1999 and September 2003 were reviewed. Variables such as co...

introduction: a career development consists of jobs that a person passes in order to reach a professional goal. career development management results in job satisfaction, professional commitment and higher effectiveness. the purpose of this study was to determine different dimensions of career development among the staff of shiraz university of medical sciences.   methods: this study was a cros...

BACKGROUND The aim of this study was to evaluate the feasibility of single-port video-assisted thoracic surgery (VATS) in the treatment of secondary spontaneous pneumothorax (SSP). METHODS Twenty-four patients who were scheduled to undergo single-port VATS for SSP were studied. The medical records of the patients were retrospectively reviewed. The mean follow-up duration was 26.1±19.8 months....

This study was conducted to compare the perioperative outcomes of two-portal and three-port video-assist thoracoscopic surgery (VATS) for early stage nonsmall cell lung cancer.In this retrospective analysis, 279 cases of two-port VATS with a single utility port and 152 cases of three-port VATS performed by our department from October 2010 to December 2014 were collected. The operative time, vol...

Six-port reflectometer is well-known for its ability to measure magnitude and phase-shift of microwave signal using four power detectors that perform magnitudeonly measurements. This paper presents the development of an innovative symmetric ring junction as four-port reflectometer for complex reflection coefficient measurements. It reduces the number of required detectors to two. Design optimiz...

BACKGROUND To establish a prediction model in selecting fit patients with resected pIIIA-N2 non-small cell lung cancer (NSCLC) for postoperative radiotherapy (PORT), and evaluate the model in clinical practice. METHODS Between January 2003 and December 2005, 221 patients with resected pIIIA-N2 NSCLC were retrospectively analyzed. The effect of PORT on overall survival (OS) of patients with di...

port wine stains are benign but cosmetically devasting congenital angiomas. the argon laser is a therapeutic device newly applied to this condition. our program was begun 6 years ago. from the beginning, the study was conceived as a clinical investigation of both the port wine stain and its argon laser therapy. a total of 218 patients with port wine stains have been studied and many aspects of ...

This paper proposes a re-conceptualization of the port supply chain as a smart service system, in accordance with the theory of service science. Starting from a short literature review about the port supply chain approach and service science, a new comprehensive framework is provided to better understand seaport dynamics and the creation of competitive port supply chains. The methodology used i...

A seven-port wave-correlator based vector network analyzer is proposed. The seven-port wave-correlator is a combination of two six-port wave-correlators which share common components. Furthermore, the complex wave ratio measurement accuracy is improved since the input signals can be directly detected by the side-arm ports. A seven-port wave-correlator is fabricated using microstrip branch line ...