Data on combustion, performance and emissions of a 6.8 L, 6-cylinder, Tier II diesel engine.

A diesel engine has been a desirable machine due to its better fuel efficiency, reliability, and higher power output. It is widely used in transportations, locomotives, power generation, and industrial applications. The combustion of diesel fuel emits harmful emissions such as unburned hydrocarbons (HC), particulate matter (PM), nitrogen oxides (NOx), and carbon monoxides (CO). This article presents data on the efficiency, combustion, and emission of a 4-stroke diesel engine. The engine is a 6.8 L turbocharged 6-cylinder Tier II diesel engine fitted with a common rail injection system. The test was carried out at the Powerhouse Energy Campus, Colorado State University Engines and Energy Conversion facility. The ISO Standard 8178:4 Cycle D2 cycle was adopted for this study consists of five test runs at 1800 rpm. During the testing, CO, carbon dioxide (CO2), oxygen (O2), NOx, PM, unburned HC as a total HC (THC), methane (CH4), formaldehyde (CH2O), and volatile organic compound (VOC) emissions were measured. At the same time, the data acquisition system recorded the combustion data. The engine's performance is characterized by the brake specific fuel combustion (BSFC) and thermal efficiency. A dataset of correlations among the parameters was also presented in this article.

Jail administrators' perceptions of the use of psychiatric advance directives in jails.

OBJECTIVE: Individuals with serious mental illnesses are at high risk of incarceration. Jails are often unable to obtain information needed to provide appropriate care. Psychiatric advance directives may be useful tools to communicate treatment information to jails. This study explored their use as a novel intervention for individuals with mental illnesses in jails. METHODS: Eighty jail administrators in North Carolina were surveyed to determine their support for psychiatric advance directives in jails. Relationships between respondents' job type (jail administrator or medical administrator) or jail census and support for the directives were examined by using chi square tests. Open-ended responses were analyzed using qualitative methods. RESULTS: Seventy-three percent of respondents indicated they supported psychiatric advance directives. Respondents from jails at or below a median census of 120 were significantly more likely to support psychiatric advance directives than those from larger jails. CONCLUSIONS: Psychiatric advance directives' informational function may prove valuable in jail settings. Additional research assessing directives as interventions for individuals with mental illnesses at risk of incarceration is needed.