Publications by authors named "J H Littlefield"
Use of Community Health Workers Among U.S. Male Latino Population: A Scoping Review.
J Immigr Minor Health
August 2024
Article Synopsis
- * The review included 20 articles focusing on 13 interventions, categorizing them into male-only and predominantly male mixed-gender samples, with emphasis on occupational health and social support.
- * Key findings revealed that successful health promotion for Latino males often involves utilizing existing social networks and following community-based participatory research (CBPR) principles.
Article Synopsis
- - The transition to a new energy mix is increasing the demand for precise emissions reporting in the petroleum supply chain due to environmental regulations and the complexities of crude oil trading.
- - Current assessments of carbon footprints lack detail and do not provide adequate traceability from oil wells to refineries, resulting in significant variability in carbon intensities.
- - By using advanced data and algorithms, the study reveals a wide range of carbon emission intensities in crude trade pathways, highlighting that prioritizing low-carbon sources could save 1.5-6.1 Gigatons of CO-equivalent emissions by 2050 under climate-friendly scenarios.
Re-Evaluating the Association Between Hormonal Contraception and Breast Cancer Risk.
Breast Cancer (Dove Med Press)
March 2023
Article Synopsis
- This review summarizes studies on hormonal contraception and its potential link to breast cancer risk, highlighting that long-term estrogen exposure is a debated factor.
- Key hormonal contraception methods—including oral, transdermal, and transvaginal—are assessed for associated risks, with gaps in current knowledge emphasized.
- Challenges in research include accounting for established risk factors, determining causes of associations, and differentiating between statistical and clinical significance, which are crucial for guiding women's healthcare decisions.
A pressing challenge facing the aviation industry is to aggressively reduce greenhouse gas emissions in the face of increasing demand for aviation fuels. Climate goals such as carbon-neutral growth from 2020 onwards require continuous improvements in technology, operations, infrastructure, and most importantly, reductions in aviation fuel life cycle emissions. The Carbon Offsetting Scheme for International Aviation of the International Civil Aviation Organization provides a global market-based measure to group all possible emissions reduction measures into a joint program.
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- - Recent studies on greenhouse gas (GHG) emissions in the natural gas supply chain have enhanced our knowledge of the overall emissions, but they often overlook the connections between specific production areas and where the gas is consumed.
- - This research provides a comprehensive analysis of GHG emissions by examining different regions of gas transmission and distribution, revealing that the average distance for transporting natural gas in the U.S. is 815 km, with significant variations.
- - The findings indicate that the life cycle GHG emissions for delivering one megajoule (MJ) of natural gas vary greatly by region, with the Pacific region emitting the most (13.0 g COe/MJ) and the Northeast U.S. emitting the least (8.1 g