The effects of wood burning stoves on indoor air quality was investigated in a rural community of southern Brazil, during the winter season of 1991. The concentrations of polycyclic aromatic hydrocarbons (PAHs), nitrogen dioxide (NO2) and suspended particulate matter (SPM) were assessed in houses with wood stoves and the results compared with levels found in houses with gas stoves. Strikingly h...

The extraction of hydrocarbons from shale formations using horizontal drilling with high volume hydraulic fracturing (unconventional shale gas and tight oil extraction), while derived from methods that have been used for decades, is a relatively new innovation that was introduced first in the United States and has more recently spread worldwide. Although this has led to the availability of new ...

Abstract—Natural gas, as one of the most important sources of energy for many of the industrial and domestic users all over the world, has a complex, huge supply chain which is in need of heavy investments in all the phases of exploration, extraction, production, transportation, storage and distribution. The main purpose of supply chain is to meet customers’ need efficiently and with minimum co...

Citation: Traustason S, Kiilgaard JF, Karlsson RA, Hardarson SH, Stefansson E, la Cour M. Spectrophotometric retinal oximetry in pigs. Invest Ophthalmol Vis Sci. 2013;54:2746–2751. DOI:10.1167/ iovs.12-11284 PURPOSE. To assess the validity of spectrophotometric retinal oximetry by comparison to blood gas analysis and intravitreal measurements of partial pressure of oxygen (pO2). METHODS. Female...

The aim of any value chain & network analysis is to understand the systemic factors and conditions through which a value framework and its firms can achieve higher levels of performance. The upstream oil & gas business is increasingly stimulated for growth by federal legislation (e.g. tax credits unconventional gas plays), while the corporate earnings in the US midstream and downstream energy s...

To address the problems caused by fossil energy usage it is important to make a transition to renewable sources of energy, in particular in the residential area. Heating systems such as air source heat pumps that gather heat energy from the ambient air are useful alternatives. However, whether or not such technical solutions are actually used depends on individual decisions. In the current pape...

The silk of silkworm consists of fibroin fiber coated by sericins. In addition, some nonprotein components were also identified in the sericin fraction. The presence of nonprotein components in the silk has not been well explained. In the present study, methods based on gas chromatography-mass spectrometry were used to identify the metabolites in the cocoon silk from a wild silkworm and two dom...

BACKGROUND There is evidence that household air pollution is associated with poor health in China, and that this form of air pollution may even be more of a health concern in China than the much-publicized outdoor air pollution. However, there is little empirical evidence on the relationship between household air pollution and health in China based on nationally representative and longitudinal ...

BACKGROUND To investigate factors related to prevention of self-immolation in west of Iran. METHODS In a case-control study, 30 consecutive cases of deliberate self-inflicted burns admitted to the regional burn centre (Imam Khomeini hospital in Kermanshah province, Iran) were compared with controls selected from the community and matched by sex, age, district-county of residence, and rural vs...

A USEPA, procedure, ISCLT3 (Industrial Source Complex Long-Term), was applied to model the spatial distribution of polycyclic aromatic hydrocarbons (PAHs) emitted from various sources including coal, petroleum, natural gas, and biomass into the atmosphere of Tianjin, China. Benzo[a]pyrene equivalent concentrations (BaPeq) were calculated for risk assessment. Model results were provisionally val...