BACKGROUND Laparoscopic examination is a useful investigation in the evaluation of infertile women. To perform this test, pneumoperitoneum is required to distend the abdomen, improve visibility and displace the intestines out of the pelvis. Several gases have been used to achieve this purpose including Nitrous Oxide (N2O), Carbondioxide (CO2), Helium, Xenon andAir. STUDY DESIGN AND METHOD Thi...

The demand for cement is increasing each year, but the manufacture of 1 tonne produces an equal number carbondioxide (CO2) gas which directly related to increase in global warming. Therefore, we need a substitute material, namely geopolymer. This material has relatively superior properties compared cement. However, one drawbacks geopolymers that production costs are more expensive pre-cast beca...

The potential use of satellite observed nighttime lights for estimating carbondioxide (CO2) emissions has been demonstrated in several previous studies. However, the procedures for a moderate resolution (1 km 2 grid cells) global map of fossil fuel CO2 emissions based on nighttime lights are still in the developmental phase. We report on the development of a method for mapping distributed (excl...

Cyanobacterial Extracellular Polymeric Substances(EPS) play an important physiological role in mat formation and stress tolerance during adverse conditions. They are highly heterogeneous polymers containing a number of distinct polysaccharides and non carbohydrate constituents including proteins, phospholipids and nucleic acids. EPSs are therefore regarded as abundant source of structurally div...

Prediction of the fate of pesticides in soil is of interest from an environmental (pollution) as well as an agricultural (efficacy, carryover) viewpoint. Two environmental parameters that control microbial degradation of pesticides in soil are moisture and temperature. This study was designed to quantify the impact of soil water content and temperature on microbial degradation rates of the inse...

This work deals with the effect of combined microwave-ultrasonic pretreatment on the anaerobic biodegradability of primary, excess activated and mixed sludge. The characteristics, biodegradability and anaerobic digester performance for untreated primary, excess activated and mixed sludge were compared to combined microwave-ultrasonic pretreated primary, excess activated and mixed sludge. All sl...

Active sites are created on the surface of a Li/MgO catalyst used for the selective oxidation of methane by the gradual loss of carbondioxide from surface carbonate species in the presence of oxygen. Decomposition of the carbonat~ species in the absence of oxygen is detrimental to the activity of the cataIy~t. The active sites'created are not stable but disappear either as a result of reaction ...

Recurrent respiratory papillomatosis (RRP) is caused by Herpes papilloma virus (HPV) infection of the throat. RRP is categorized into juvenile-onset (JORRP) and adult-onset (A0RRP) based on diagnosis before or 12 years of age respectively. The incidence rate of RRP a disease of larynx estimated to be 4.3 per 100,000/year for juvenile-onset and 1.8 per 100,000/year for adult-onset. The disease h...

As an essential component of the SCO2 recompression Brayton cycle, recuperator has a significant impact on efficiency and stability entire cycle system. The printed circuit heat exchanger (PCHE) is most suitable for in cycle. To investigate effects structural parameters asymmetric airfoil fins thermo-hydraulic performance PCHEs, simplified three-dimensional numerical simulation models PCHE with...