Steel-structured jacket or template platforms have been extensively installed in Persian Gulf offshore oil & gas fields. For the jackets in the water depth range of 40 meters in this region, utilizing the self-upending concept has been investigated. It has been concluded that designing the light weight jackets, implementing the self-upending process for their installation operations, are econom...

This feasibility study is a response to the increasing of interest in coal seam gas (CSG) in Australia and due to the demands for alternative fuels by high fuel-consumption industries such as agriculture. A technical analysis of LNG as an alternative fuel to diesel in agriculture was conducted. A comparison of different conversion methods (dual-fuel and mono-gas systems) is undertaken. Data was...

abstract three pear genotypes (nazkeh, lasoreh and qevilah), grown in 2l containers, were studied under four irrigation regimes in order to evaluate the leaf relative water content (rwc), photosynthesis, leaf gas exchanges and plant dry weight induced by water stress. control treatment everyday was irrigation. irrigation was practiced when soil water potential reached at -0.4, -0.8, and -1.2 mp...

objective(s) herbal waters are extensively used in most parts of iran including mashhad. visiting a patient with total blindness due to daily ingestion of around 200 ml of herbal water (plant forty water) per day for six months was the rational for methanol determination in all herbal waters available in mashhad markets. materials and methods a total of two hundred and nineteen bottles of herba...

Gas diffusion medium (GDM) is a crucial component in proton exchange membrane fuel cells (PEMFCs). Being composed of a gas diffusion layer (GDL) with a micro-porous layer (MPL) coated onto it, it ensures a proper water management due to the highly hydrophobic materials employed in cell assembly. In current commercial applications, the desired water repellent behaviour is usually obtained by usi...

Using Ulmus glabra as an example we revealed that acoustic emissions from plants do not necessarily occur in conjunction with water stress. The waveforms in the various signals show that acoustic emissions may possibly be generated by still unknown hydraulic events, more complex than cavitation. Using a special microscopic technique we established the presence of minute gas bubbles attached fir...

Noninvasive positive pressure ventilation is an alternative to intubation in critically ill patients with respiratory insufficiency or poor gas exchange who may require flexible bronchoscopy for diagnostic or therapeutic purposes. This ventilatory technique might help decrease the risk of bronchoscopy-related complications in patients with refractory hypoxemia, postoperative respiratory distres...

Groundwater quality and quantity is of extreme importance as it is a source of drinking water in the United States. One major concern has emerged due to the possible contamination of groundwater from unconventional oil and natural gas extraction activities. Recent studies have been performed to understand if these activities are causing groundwater contamination, particularly with respect to ex...

gas injection into heavy oil reservoirs could result in high ultimate recovery of oil. experimental studies showed that an application of a combined technology of gas assisted gravity drainage (gagd) and vapor extraction (vapex) could increase final oil recovery of a candidate viscous oil reservoir. in this paper the results of laboratory investigation are presented, including pressure-volume-t...