The Importance of Culture in Treating Substance Use Disorder: Example Application With Indigenous People.

Substance use is a common issue worldwide, but it disproportionately affects the Indigenous population in America. As culture affects many aspects of health and wellness, including the presentation and effectiveness of treatment interventions, it is vital that health care providers look at substance use within a cultural context. The Campinha-Bacote Model: The Process of Cultural Competemility in the Delivery of Healthcare Services model is a helpful tool to assess a cultural group in the context of health care. The knowledge and use of this model may assist health care professionals in providing culturally competent care for the Indigenous population in America, as well as other people from various cultural backgrounds. This model also promotes the consideration of cultural factors in nursing research and evidence-based interventions, which may assist in reducing the current disparities that exist within the Indigenous population. The current article addresses the Campinha-Bacote Model in reference to substance use disorder in the Indigenous population in America and the relation to nursing practice and research. [Journal of Psychosocial Nursing and Mental Health Services, 59(6), 7-12.].

Evaluating Methods To Estimate Methane Emissions from Oil and Gas Production Facilities Using LES Simulations.

Large-eddy simulations (LES) coupled to a model that simulates methane emissions from oil and gas production facilities are used to generate realistic distributions of meteorological variables and methane concentrations. These are sampled to obtain simulated observations used to develop and evaluate source term estimation (STE) methods. A widely used EPA STE method (OTM33A) is found to provide emission estimates with little bias when averaged over six time periods and seven well pads. Sixty-four percent of the emissions estimated with OTM33A are within ±30% of the simulated emissions, showing a slightly larger spread than the 72% found previously using controlled release experiments. A newly developed method adopts the OTM33A sampling strategy and uses a variational or a stochastic STE approach coupled to an LES to obtain a better fit to the sampled meteorological conditions and to account for multiple sources within the well pad. This method can considerably reduce the spread of the emissions estimates compared to OTM33A (92-95% within ±30% percent error), but it is associated with a substantial increase in computational cost due to the LES. It thus provides an alternative when the additional costs can be afforded to obtain more precise emission estimates.

Impact of wildfires on ozone exceptional events in the Western u.s.

Wildfires generate substantial emissions of nitrogen oxides (NOx) and volatile organic compounds (VOCs). As such, wildfires contribute to elevated ozone (O3) in the atmosphere. However, there is a large amount of variability in the emissions of O3 precursors and the amount of O3 produced between fires. There is also significant interannual variability as seen in median O3, organic carbon and satellite derived carbon monoxide mixing ratios in the western U.S. To better understand O3 produced from wildfires, we developed a statistical model that estimates the maximum daily 8 h average (MDA8) O3 as a function of several meteorological and temporal variables for three urban areas in the western U.S.: Salt Lake City, UT; Boise, ID; and Reno, NV. The model is developed using data from June-September 2000-2012. For these three locations, the statistical model can explain 60, 52, and 27% of the variability in daily MDA8. The Statistical Model Residual (SMR) can give information on additional sources of O3 that are not explained by the usual meteorological pattern. Several possible O3 sources can explain high SMR values on any given day. We examine several cases with high SMR that are due to wildfire influence. The first case considered is for Reno in June 2008 when the MDA8 reached 82 ppbv. The wildfire influence for this episode is supported by PM concentrations, the known location of wildfires at the time and simulations with the Weather and Research Forecasting Model with Chemistry (WRF-Chem) which indicates transport to Reno from large fires burning in California. The contribution to the MDA8 in Reno from the California wildfires is estimated to be 26 ppbv, based on the SMR, and 60 ppbv, based on WRF-Chem. The WRF-Chem model also indicates an important role for peroxyacetyl nitrate (PAN) in producing O3 during transport from the California wildfires. We hypothesize that enhancements in PAN due to wildfire emissions may lead to regional enhancements in O3 during high fire years. The second case is for the Salt Lake City (SLC) region for August 2012. During this period the MDA8 reached 83 ppbv and the SMR suggests a wildfire contribution of 19 ppbv to the MDA8. The wildfire influence is supported by PM2.5 data, the known location of wildfires at the time, HYSPLIT dispersion modeling that indicates transport from fires in Idaho, and results from the CMAQ model that confirm the fire impacts. Concentrations of PM2.5 and O3 are enhanced during this period, but overall there is a poor relationship between them, which is consistent with the complexities in the secondary production of O3. A third case looks at high MDA8 in Boise, ID, during July 2012 and reaches similar conclusions. These results support the use of statistical modeling as a tool to quantify the influence from wildfires on urban O3 concentrations.

Evaluating the detectability of methane point sources from satellite observing systems using microscale modeling.

This study evaluates the efficacy of current satellite observing systems to detect methane point sources from typical oil and gas production (O&G) facilities using a novel very high-resolution methane concentration dataset generated using a microscale model. Transport and dispersion of typical methane emissions from seven well pads were simulated and the column enhancements for pseudo satellite pixel sizes of 3, 1, and 0.05 km were examined every second of the 2-h simulations (7200 realizations). The detectability of plumes increased with a pixel resolution, but two orders of magnitude change in emission rates at the surface results only in about 0.4%, 1.6%, and 47.8% enhancement in the pseudo-satellite retrieved methane column at 3, 1, and 0.05 km, respectively. Average methane emission rates estimated by employing the integrated mass enhancement (IME) method to column enhancements at 0.05 km showed an underestimation of the mean emissions by 0.2-6.4%. We show that IME derived satellite-based inversions of methane emissions work well for large persistent emission sources (e.g., super emitters), however, the method is ill-suited to resolve short-term emission fluctuations (< 20 min) in typical well site emissions due to the limitations in satellite detection limits, precision, overpass timing, and pixel resolution.

Use and Perception of Contraception among Genders in Santo Domingo, Dominican Republic.

BACKGROUND: The prevalence of contraception in the Dominican Republic is among the highest of Latin American countries. Prior research has assessed the general perception of contraception in Latin America, examined determinants of contraceptive use among Dominican women, and explored their perceived reproductive control. Little research has explored the specific role each sexual partner, male and female, has in determining the use of contraception in Latin American countries. OBJECTIVE: This study aims to address the gap in research regarding the specific role each sexual partner has in determining the contraception use in Latin American countries by evaluating male and female perception and use of contraception, and their perceived reproductive control. METHODS: A one-time survey was administered to adult patients of two short-term medical missions located in Santo Domingo, Dominican Republic. The difference in overall responses to dichotomous questions and ordinal questions were tested using binomial Z-test and nonparametric Chi-Square Goodness-of-Fit test. Bivariate analyses were conducted using cross tabulation with Chi-Square test. FINDINGS: The majority of participants of both genders are in favor of contraception use, believe they have the power to avoid an unplanned pregnancy, and view their partners' wishes regarding the use of contraception as important. However, significantly more females than males are in favor of contraception use (p-value = 0.01). Specific subgroups of men and women answered the survey in ways that suggest traditional values may be at odds with individuals' willingness to use contraception. CONCLUSIONS: There is an overall acceptance of contraception use and perception of reproductive control among both genders in our population, with a greater proportion of females in favor of contraception use than males (p-value = 0.01). Changing cultural norms may be coming into conflict with established beliefs and practices in the Dominican Republic, such as its machismo culture.