Pakistan is a gas rich but power poor country. It consumes approximately 1, 559 Billion cubic feet of natural gas annually. Gas is transported around the country in a system of pressurized transmission pipelines under a pressure range of 600-1000 psig exclusively operated by two state owned companies i.e. SNGPL (Sui Northern Gas Pipelines Limited) and SSGCL (Sui Southern Gas Company Limited). T...

OBJECTIVES The present study aimed to assess the risk of cancer due to benzene in the ambient air of gas stations and traffic zones in the north of Tehran. The cancer risk was estimated using the population distribution data for benzene levels and the unit risk for benzene proposed by the United States Environmental Protection Agency (US EPA). MATERIAL AND METHODS Sixteen sampling locations w...

Diode laser absorption spectroscopy provides a direct method of determinating species concentration and local gas temperature in combustion flames. Under microgravity conditions, diode lasers are particularly suitable, given their compact size, low mass and low power requirements. The development of diode laser-based sensors for gas detection in microgravity is presented, detailing measurements...

Muon tomography (MT) based on the measurement of multiple scattering of atmospheric cosmic ray muons traversing shipping containers is a promising candidate for identifying threatening highmaterials. Since position-sensitive detectors with high spatial resolution should be particularly suited for tracking muons in a MT application, we propose to use compact micro-pattern gas detectors, such as ...

Liquefied petroleum gas (LPG) is an important urban gas source in China. Before supplied to customers by pipeline supply systems, LPG is stored in tanks in LPG vaporization stations. Designers usually decide the number and the size of storage tanks by their experience during constructions of vaporization stations. These decisions are usually not best and most economical. To solve the problem, a...

We analyze the dynamics of 2-worker m-stations bucket brigade assembly lines where the velocities of the workers on the stations are arbitrary, albeit xed constants over each station. We provide a complete characterization of the dynamics under blocking and instantaneous walk-back.

Air pollution caused by traffic transportation, fuel combustions and volatile organic compounds (VOCs) composition of gasoline, has progressed to be a serious health problem in Bangkok, Thailand, especially among occupational workers as gasoline station workers (Land transportation department, 2000; Muttamara and Leong, 2000). Exposure to gasoline vapors is classified by the International Agenc...

Carbon monoxide inhaled into the lungs will enter blood circulation and inhibit entry of oxygen needed by body. This gas combines with hemoglobin to form carboxyhemoglobin (COHb). The increase in COHb function transportation affect health workers. study aims determine risk factors for increasing Tirtonadi Bus Station Surakarta officers. research method used analytic observational a cross-sectio...