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111.
Melissa Horne B.S. Kaylee R. Mastrianni Ph.D. Gray Amick Ph.D. Rachel Hardy B.S. Elissa Renneker B.S. Kevin W.P. Miller Ph.D. 《Journal of forensic sciences》2020,65(5):1709-1715
In the United States, federal law and many state laws differentiate between marijuana and industrial hemp through delta-9-tetrahydrocannabinol (THC) levels, whereby the latter is defined as ≤0.3 percent THC on a dry weight basis. Many traditional cannabis identification methods employed by crime laboratories cannot accurately determine total THC quantities in accordance with federal and state regulations, or do so with increased time, labor, and risks of instrument damage. In order to quickly distinguish positive marijuana samples, a method was developed to identify plant material with a total THC level >1%. This novel, automated dispersive pipette extraction (DPX) method uses tip-based technology and an automated liquid handler to enable fast, hands-free selective isolation of THC and its precursors for downstream gas chromatography–mass spectrometry (GC-MS) analysis. The workflow proceeds with no repetitive manual effort and reduced need for instrument maintenance while enabling crime labs to legally identify marijuana through the detection of total THC above 1%. Recovery of THC using the DPX extraction method was 93% at 30 µg/mL and 78% at 500 µg/mL. Similarly, THCA-A recovery was 100% at 30 µg/mL and 74% at 500 µg/mL. Samples evaluated in a blind study (proficiency, hemp, and nonprobative case samples) were all accurately identified as greater than or less than 1% THC, with samples containing <1% THC being identified as “cannabis” and subjected to more discriminative analysis as needed. 相似文献
112.
Caiazza Rosa Belitski Maksim Audretsch David B. 《The Journal of Technology Transfer》2020,45(3):694-704
The Journal of Technology Transfer - The process that turns knowledge into innovation is highly ambiguous and complex. This study merges economic and management perspectives to extend the knowledge... 相似文献
113.
ABSTRACT Police personnel are likely to be affected by stress and compassion fatigue, which may have important consequences for health, well-being and job performance. There are certain individual differences which may protect against compassion fatigue, for example mental toughness, personality and self-care behaviours. However, there is little research examining all of these constructs in combination with policing. The current study aimed to gather information regarding the prevalence of compassion fatigue, compassion satisfaction and perceived stress within a large UK police force, and their relationships with personality, mental toughness and self-care activities. A questionnaire was completed by 605 police employees within a UK police force. The results demonstrated that 20% of personnel suffered from negative psychological outcomes and that these outcomes were predicted by individual differences and self-care activities. The requirement for shift work, and mental toughness scores, significantly predicted compassion satisfaction, compassion fatigue and perceived stress. The analyses also revealed a role for gender, tenure, personality and self-care in several aspects of well-being. The implications of these findings are discussed, considering the current contexts in which policing operates, with the aim of improving the psychological well-being of police officers and staff. 相似文献
114.
Dvorsky Melissa R. Kofler Michael J. Burns G. Leonard Luebbe Aaron M. Garner Annie A. Jarrett Matthew A. Soto Elia F. Becker Stephen P. 《Journal of youth and adolescence》2019,48(3):537-553
Journal of Youth and Adolescence - There is growing recognition that clinical and developmental outcomes will be optimized by interventions that harness strengths in addition to ameliorating... 相似文献
115.
Jenny Hallam Chris Howard Abigail Locke Melissa Thomas 《Journal of Gender Studies》2019,28(3):330-341
Childbirth has been positioned as a life changing event that has profound long-term psychological effects upon women. This paper adopts a community psychology approach to explore the role that the Positive Birth Movement (PBM) may have in tackling negative birth experiences by supporting women before and after birth. Six women who all regularly attend UK-based PBM meetings and had given birth to at least one child participated in one to one semi-structured interviews designed to explore the support they received before, during and after their birth, as well as their experiences with the PBM. A Foucauldian inspired discourse analysis explores themes relating to the lack of support and information provided by the NHS and the function of the PBM as a transformative community space which offers social support and information. Within these themes a focus on neoliberalism, choice and the woman’s position as an active consumer of health care is critically discussed. It is argued that the PBM has the potential to prepare women for positive birth experiences but more attention needs to be paid to the wider contexts that limit women’s ability to make ‘free’ choice. 相似文献
116.
Melissa A. Lippold Mark T. Greenberg Linda M. Collins 《Journal of youth and adolescence》2013,42(11):1732-1744
Most studies isolate the effects of one knowledge-related behavior on youth outcomes. This study explores the relationship between subgroups of mother–youth dyads that use specific combinations of parental knowledge-related behaviors and youth risky behavior. Using a sample of 796 rural 6th graders (53 % female), we assessed mother and youth reports of maternal knowledge, active parent monitoring efforts, youth disclosure, parental supervision, and the amount of parent–youth communication to identify five knowledge latent classes: High-Monitors, Maternal Over-Estimators, Low-Monitors, Communication-Focused, and Supervision-Focused. Delinquency, antisocial peers, and substance use were associated with increased odds of membership in the Supervision-Focused class, relative to the High Monitors. Membership in the Low Monitors and Maternal Over-Estimators classes was associated with unhealthy attitudes towards substances and for Low Monitors, substance use. The discussion focuses on the value of using a person-oriented approach to understand parental knowledge and risky behavior during early adolescence and intervention implications. 相似文献
117.
118.
Katherine A. Snyder Andrea F. Corral Gwendolyn J. Woods Andrea Prichard Melissa Montgomery 《Development in Practice》2018,28(7):911-921
The University of Arizona chapter of Engineers Without Borders USA has faced multiple challenges involving community participation in rural development, in the Andean community of Marquirivi, Bolivia, both in rural design and in community participation. Despite successful construction of a shower house in 2014, the EWB-USA UA team experience with community participation revealed the numerous complexities involved in engaging successfully with communities. The importance of previous aid in a community with development projects also emerged as critical in shaping actions. This article discusses lessons learnt and recommendations for rural infrastructure projects, as well as the EWB-USA model of sustainable development. 相似文献
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120.
The purpose of this study was two-fold: (1) to identify how school factors were related to perpetration of dating violence
among adolescents; and (2) to assess how these factors may reduce or exacerbate the relationship between parental domestic
violence and adolescents’ perpetration of dating violence, while accounting for individual and family characteristics from
early adolescence. Three waves of data from the Welfare, Children, and Families: A Three-City Study were used (N = 765; Ages 16–20 at Wave 3). Lagged Ordinary Least Squares multiple regression techniques were utilized to examine the link
between perpetration of dating violence and school factors. Results are presented separately by adolescents’ sex and ethnicity-by-sex.
Early involvement with antisocial peers and an increase in involvement with antisocial peers over time were linked to perpetration
of dating violence for males, females, African-American females, and Hispanic males. Lack of school safety and academic difficulties
during early adolescence exacerbated the impact of parental domestic violence exposure for African-American males and Hispanic
males, respectively. Early school involvement, surprisingly, exacerbated this impact for Hispanic females. Implications for
the prevention of perpetration of dating violence are explored.
Melissa P. Schnurr M.S. is a Doctoral student in Human Development and Family Studies at Iowa State University. Schnurr also holds a M.S. in Human Development and Family Studies from Iowa State University. She has research interests in adolescent romantic relationships, adolescent dating violence perpetration, and the effects of the school, family, and neighborhood environments on adolescent development. Brenda J. Lohman Ph.D. is an Assistant Professor of Human Development and Family Studies and a Faculty Affiliate of the Institute for Social and Behavior Research at Iowa State University. Lohman holds a Ph.D. in Human Development and Family Studies from The Ohio State University and a M.S. in Developmental Psychology from Illinois State University. Utilizing a multidisciplinary framework, her research interests focus on the successful academic, psychological, social, and sexual adjustment of adolescents especially those from economically disadvantaged minority families and communities. 相似文献
Brenda J. LohmanEmail: |
Melissa P. Schnurr M.S. is a Doctoral student in Human Development and Family Studies at Iowa State University. Schnurr also holds a M.S. in Human Development and Family Studies from Iowa State University. She has research interests in adolescent romantic relationships, adolescent dating violence perpetration, and the effects of the school, family, and neighborhood environments on adolescent development. Brenda J. Lohman Ph.D. is an Assistant Professor of Human Development and Family Studies and a Faculty Affiliate of the Institute for Social and Behavior Research at Iowa State University. Lohman holds a Ph.D. in Human Development and Family Studies from The Ohio State University and a M.S. in Developmental Psychology from Illinois State University. Utilizing a multidisciplinary framework, her research interests focus on the successful academic, psychological, social, and sexual adjustment of adolescents especially those from economically disadvantaged minority families and communities. 相似文献