| This paper presents a new structure for a six-port reeectometer which due to its simplicity can be implemented very easily in MMIC technology. It uses non-matched diode detectors with a high input impedance which are placed around a phase shifter in conjunction with a power divider for the reference detector. The circuit has been fabricated using the F20 GaAs process of the GEC-Marconi foundr...

BACKGROUND/AIMS Since the first successful laparoscopic cholecystectomy with the establishment of pneumoperitoneum in France by Mouret in 1987, it has become the golden standard for cholecystectomy. Generally techniques with four trocars have been used with surgeons but some of them prefer 3-trocar techniques. Our aim is to compare the clinical outcomes of three- and four-port techniques prospe...

Background: Microbial and fungal contamination of agricultural produce has been a health challenge over the years. The present study surveyed microbial and aflatoxin contamination in groundnut, maize, and cowpea collected from Port Harcourt, Nigeria. Methods: Ninety samples of maize, groundnut, and cowpea were purchased from six major markets in Port Harcourt, Nigeria. The samples were first e...

A 41-year-old obese lady presented with severe obstruction of small bowel and the herniation of a crampy abdominal pain and vomiting, six hours after loop of small bowel through the 10 mm umbilical her routine laparoscopic cholecystectomy. She was port [Figure 1B]. An urgent relaparoscopy was done given antiemetic, proton pump blocker and which confirmed the findings of CT scan. A loop of intra...

BACKGROUND A meta-analysis was conducted to assess the impact of postoperative radiotherapy (PORT) in renal cell carcinoma (RCC) on overall survival (OS), disease-free survival (DFS) and locoregional failure (LRF). MATERIALS AND METHODS The Medline, CANCERLIT, Cochrane library database and search engines were searched to identify randomized controlled studies comparing radical nephrectomy alo...

background: tissue expanders are devices which are used to create enough skin to form suitable flap in restoration of great skin deficiencies which are not modified initially. the current study aimed at investigating the patients’ satisfaction and the complications such as rupture, hematoma, wound infection, seroma, leakage, chronic pain, and expander expose of internal (implanted under the ski...

this research uses computational modeling to explore another method to increase diesel engine performance while maintaining low pollutant emission levels. previous studies have shown that injection-rate profiles and injector configurations play important roles on the performance and emissions of particulate and nox in di diesel engines. since the most important engine design parameters, includi...