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1.
J Environ Manage ; 357: 120716, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38565030

RESUMO

Small watercourses are essential contributors to catchment water quality, but they continue to suffer degradation across Europe. A results-based agri-environment scheme, aimed at improving watercourse quality in Ireland, developed a rapid drainage assessment to identify point source risks. The assessment uses a scoring system based on visual indicators of nutrient and sediment risk, linking the outcomes to farmer payments. To understand how this novel drainage risk assessment relates to instream watercourse quality, we used three macroinvertebrate-based biotic indices (Q-value, Small Stream Impact Score and Proportion of Sediment Sensitive Invertebrates). Macroinvertebrate kick-sampling and physiochemical analysis were completed in May and July 2021 for 12 'At Risk' and 12 'Not at Risk' small watercourses as identified by the results-based scheme. Results show that the scheme's drainage risk assessment can identify point source risks but we found it does not directly reflect local instream quality as assessed by the biotic indices. Unexpectedly, the biotic indices showed watercourse degradation in 58% of the upstream (control) sampling points, indicating impacts not captured by the drainage risk assessment. Small watercourses displayed high heterogeneity, with significant species turnover between the sampling months. The Small Stream Impact Score was less influenced by temporal change than the Q-value index. There was a significant relationship between instream watercourse quality and sedimentation, as quantified by the Proportion of Sediment Sensitive Invertebrates. Including a measurement of instream sedimentation in the drainage assessments would improve the identification of risks and management. These results show that by linking farmer payments to the drainage risk assessments results-based payment schemes could positively contribute to improving catchment scale watercourse quality, but further work is required to capture wider sources of freshwater impacts.


Assuntos
Monitoramento Ambiental , Invertebrados , Animais , Monitoramento Ambiental/métodos , Qualidade da Água , Rios , Europa (Continente)
2.
Artigo em Inglês | MEDLINE | ID: mdl-38305575

RESUMO

ISSUE ADDRESSED: E-scooters are sought after for their cost-effectiveness, sustainability, and efficiency in urban transportation. However, this popularity has been accompanied by a surge in injuries, prompting a deeper investigation into the factors influencing risk perceptions among e-scooter users. METHODS: Using a qualitative approach, we conducted 19 interviews with those who attended an emergency department as a result of e-scooter injury. We aimed to understand the psychosocial effects of these incidents and employed thematic analysis to discern recurrent patterns in participants' experiences, focusing on alterations in daily life, community response, perception shifts, and avenues to enhance safety awareness. RESULTS: The findings underscored significant disruptions to daily life due to injuries, demonstrating enduring impacts on lifestyle and wellbeing. Participants exhibited a perceptual shift, transitioning from perceiving e-scooters as enjoyable to viewing them as dangerous. Recommendations for enhancing safety awareness included accessible and clear safety education, pre-ride briefings, real-time safety guidance, temporal rental restrictions, and mandatory breathalysers before e-scooter use. CONCLUSIONS: The study underscores the importance of considering not only the individual experiences and perceptions of e-scooter injuries but also the broader social context, including the night-time economy. Leveraging peer narratives and community engagement is vital to reshape risk perceptions and promote harm reduction messages. SO WHAT?: A comprehensive approach through proactive interventions and robust educational strategies is essential to foster responsible e-scooter usage and prioritise public safety.

3.
Arch Sex Behav ; 53(2): 511-524, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38066352

RESUMO

Research on perceptions of sexual interest has documented the tendency for men to overperceive sexual interest (i.e., to perceive a social signal as indicating more sexual intent than the actor intended). However, this work has almost exclusively focused upon these dynamics among heterosexual individuals. Thus, the current set of studies aimed to understand how perceptions of sexual interest manifest among lesbian, gay, and bisexual (LGB) women and men. In Study 1 (N = 85), LGB women and men nominated behaviors that signal sexual intent. Using an act nomination approach, LGB women and men tended to nominate behaviors similar to those nominated by heterosexual women and men. In Study 2 (N = 43), gay men reported acts that were representative of their own and other gay men's sexual interest. Consistent with previous work-by comparing perceived self-reported versus others' sexual intent when engaging in specific behaviors-we found no evidence for a sexual overperception bias in gay men, albeit in a small field study. In Study 3 (N = 307), using a gender-by-sexual orientation design, heterosexual and LGB women and men reported previous experiences in which their friendliness was sexually misperceived. Bisexual women were less likely than other groups to report their friendliness being misinterpreted as sexual by other bisexual women and/or lesbians. Additionally, across all genders and sexual orientations, participants reported feelings of indifference, awkwardness and embarrassment when being misperceived. Ultimately, the current studies' results provide broader insight into the nature of sexual overperception among LGB populations.


Assuntos
Homossexualidade Feminina , Minorias Sexuais e de Gênero , Feminino , Humanos , Masculino , Comportamento Sexual , Bissexualidade , Heterossexualidade
4.
Curr Opin Psychiatry ; 37(1): 18-22, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-37972938

RESUMO

PURPOSE OF REVIEW: Displaced persons around the world have intensified in the previous decade and are predicted to rise further with greater global instability. The mental health issues involved with fleeing one's home, and attempting to make a new life in a host country need to be understood and addressed. RECENT FINDINGS: Prevalence of anxiety and mood disorders, including posttraumatic stress disorder appear to be higher for displaced peoples than for the population in the host country. This is consistent across different methods. Traumatic life events in the country of origin as well as during flight contribute to symptom severity. Factors in the host country increasing severity including isolation, discrimination, low social support. There are successfully implemented intercultural interventions at the individual level of the practitioner, as well as at the institutional level. SUMMARY: There are many possibilities for successful interventions in displaced people, realizing this at a scale appropriate to the size of the problem remains a challenge.


Assuntos
Transtornos do Humor , Transtornos de Estresse Pós-Traumáticos , Humanos , Transtornos do Humor/epidemiologia , Transtornos do Humor/etiologia , Transtornos de Ansiedade/epidemiologia , Ansiedade , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Prevalência
5.
Anal Chem ; 95(47): 17203-17211, 2023 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-37966872

RESUMO

Subtle variations in stable isotope ratios at natural abundance are challenging to measure but can yield critical insights into biological, physical, and geochemical processes. Well-established methods, particularly multicollector, gas-source, or plasma isotope ratio mass spectrometry, are the gold standard for stable isotope measurement, but inherent limitations in these approaches make them ill-suited to determining site-specific and multiply substituted isotopic abundances of all but a few compounds or to characterizing larger intact molecules. Fourier transform mass spectrometry, namely, Orbitrap mass spectrometry, has recently demonstrated the ability to measure natural abundance isotope ratios with chemically informative accuracy and precision. Here, we report the first use of Fourier transform ion cyclotron resonance mass spectrometry for the accurate (<1‰) and precise (<1‰ standard error) simultaneous determination of δ13C and δ15N in caffeine isotopologues and provide a discussion of the critical instrumental parameters necessary to make such measurements. We further report the ability to make these measurements with online liquid chromatography, expanding the ability of this technique to explore mixtures in the future.

6.
Front Psychiatry ; 14: 1240703, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37904853

RESUMO

Introduction: While numerous studies have identified an increase in symptoms of depression as well as anxiety and distress due to the COVID-19 pandemic, relatively few studies have investigated the new-onset of psychiatric diseases during the pandemic. Methods: This study focuses on the number of psychiatric new-onset diagnoses in a psychiatric emergency department (pED) in Berlin, Germany during the second wave of the pandemic (i.e. from 09/15/2020 to 03/01/2021 = COVID-19-period) compared to pre-pandemic times (09/15/2019 to 03/01/2020 = control period). We focused on diagnostic subgroups and performed logistic regression analysis to investigate potential risk groups based on covariables such as age, gender, homelessness, attending in police custody and familial relationship. Results: Overall, there was a 59.7% increase in new-onset psychiatric diagnoses during the COVID-19-period. Increases in the following diagnoses were observed: new-onset of substance-related and addictive disorders (+192.5%), depressive disorders (+115.8%), schizophrenia spectrum and psychotic disorders (+113.3%) and anxiety disorders (+63.6%). These diagnostic subgroups, together with attending in police custody, were found to predict pED presentations with new-onset during the COVID-19-period. Interestingly, in the group of new-onset psychiatric diseases in the COVID-19-period, higher amounts of job loss and living alone as well as a relative decrease in familial relationships were observed. Discussion: COVID-19 infections and post-COVID-19 syndrome are unlikely to have played a substantial role in the increase of new-onset diseases in this study. Conclusion: Our findings underline the role of indirect factors in new-onset of psychiatric diseases during the pandemic and should be a caveat for future pandemic control policies.

7.
JAMA Netw Open ; 6(7): e2324511, 2023 07 03.
Artigo em Inglês | MEDLINE | ID: mdl-37471088

RESUMO

Importance: Different types of traumatic life events have varying impacts on symptoms of depression, anxiety, and somatization. For women from areas of the world experiencing war and humanitarian crises, who have experienced cumulative trauma exposure during war and forced migration, it is not known whether cumulative trauma or particular events have the greatest impact on symptoms. Objective: To examine which traumatic life events are associated with depression, anxiety, and somatization symptoms, compared with the cumulative amount, in a sample of female refugees. Design, Setting, and Participants: For this cross-sectional study, data were collected in 2016 as a part of The Study on Female Refugees. The current analysis was conducted in 2022 to 2023. This multicenter study covered 5 provinces in Germany. Participants were recruited at reception centers for refugees. Women volunteered to participate and to be interviewed after information seminars at the different centers. Exposure: Traumatic life events experienced by refugees from areas of the world experiencing war and humanitarian crises. Main Outcomes and Measures: Demographic variables (age, country of origin, religion, education, relationship status, and children), traumatic and adverse life events, and self-reported depression, anxiety, and somatization symptoms were measured. Random forest regressions simultaneously examined the importance of these variables on symptom scores. Follow-up exploratory mediation models tested potential associative pathways between the identified variables of importance. Results: For the final sample of 620 refugee women (mean [SD] age, 32.34 [10.35] years), family violence was most associated with depression (mean [SD] variable of importance [VIM], 2.93 [0.09]), anxiety (mean [SD] VIM, 4.15 [0.11]), and somatization (mean [SD] VIM, 3.99 [0.15]), even though it was less common than other traumatic experiences, including war, accidents, hunger, or lack of housing. Other factors, such as childhood sexual abuse, injury, near-death experiences, and lack of access to health care, were also important. Follow-up analyses showed partial mediation effects between these factors in their association with symptoms, supporting the unique importance of family violence in understanding mental health. Conclusions and Relevance: The findings of this cross-sectional study of refugee women who experienced multiple severe traumas related to war in their home countries and danger encountered during their migration suggest that family violence was key to their current mental health problems. Culturally sensitive assessment and treatment need to place special emphasis on these family dynamics.


Assuntos
Refugiados , Transtornos de Estresse Pós-Traumáticos , Criança , Feminino , Humanos , Adulto , Refugiados/psicologia , Depressão/epidemiologia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Estudos Transversais , Ansiedade/epidemiologia
8.
Tree Physiol ; 2023 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-37265358

RESUMO

Source-to-sink carbon (C) allocation driven by the sink strength, i.e., the ability of a sink organ to import C, plays a central role in tissue growth and biomass productivity. However, molecular drivers of sink strength have not been thoroughly characterized in trees. Auxin, as a major plant phytohormone, regulates the mobilization of photoassimilates in source tissues and elevates the translocation of carbohydrates toward sink organs, including roots. In this study, we used an 'auxin-stimulated carbon sink' approach to understand the molecular processes involved in the long-distance source-sink C allocation in poplar. Poplar cuttings were foliar sprayed with polar auxin transport modulators, including auxin enhancers (AE) (i.e., IBA and IAA) and auxin inhibitor (AI) (i.e., NPA), followed by a comprehensive analysis of leaf, stem, and root tissues using biomass evaluation, phenotyping, C isotope labeling, metabolomics, and transcriptomics approaches. Auxin modulators altered root dry weight and branching pattern, and AE increased photosynthetically fixed C allocation from leaf to root tissues. The transcriptome analysis identified highly expressed genes in root tissue under AE condition including transcripts encoding polygalacturonase and ß-amylase that could increase the sink size and activity. Metabolic analyses showed a shift in overall metabolism including an altered relative abundance levels of galactinol, and an opposite trend in citrate levels in root tissue under AE and AI conditions. In conclusion, we postulate a model suggesting that the source-sink C relationships in poplar could be fueled by mobile sugar alcohols, starch metabolism-derived sugars, and TCA-cycle intermediates as key molecular drivers of sink strength.

9.
Int Rev Psychiatry ; 35(3-4): 352-361, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37267027

RESUMO

Perceived discrimination has a significant negative impact on indices of mental health. One potential buffering factor in this is psychological resilience, which encompasses the ability to recover from or adapt successfully to adversity and use coping strategies, such as positive reappraisal of adverse events. This study examines the role of resilience as well as social support in buffering these effects in groups of migrants both with and without local residence permits. We conducted a non-experimental observational study with a cross-sectional design, collecting a variety of health variables in migrant groups in a naturalistic setting, during the COVID-19 period. The total sample consisted of 201 subjects, 88 of whom had a German residence title and 113 did not. These two groups were compared on the following variables of interest: social support, resilience, discrimination, and general mental health. There was no evidence for a difference in mental health between migrants with and without citizenship. However, our results suggested that migrants without citizenship reported less social support, less resilience, and more discrimination, which continued to have a distinct effect on mental health beyond resilience and social support. Psychological resilience mediated the link between social support and mental health, as well as being related to the perception of discrimination in the migrant group without citizenship. In conclusion, our models of migrants with and without citizenship showed that resilience specifically directly affected perceived discrimination in those without citizenship. The high levels of discrimination and lack of social support, particularly in the migrant group without citizenship, are concerning and suggest a focus for future interventions.


Assuntos
COVID-19 , Resiliência Psicológica , Migrantes , Humanos , Saúde Mental , Estudos Transversais , Cidadania , Apoio Social
10.
Front Microbiol ; 14: 1139213, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37303779

RESUMO

Interactions between autotrophs and heterotrophs are central to carbon (C) exchange across trophic levels in essentially all ecosystems and metabolite exchange is a frequent mechanism for distributing C within spatially structured ecosystems. Yet, despite the importance of C exchange, the timescales at which fixed C is transferred in microbial communities is poorly understood. We employed a stable isotope tracer combined with spatially resolved isotope analysis to quantify photoautotrophic uptake of bicarbonate and track subsequent exchanges across a vertical depth gradient in a stratified microbial mat over a light-driven diel cycle. We observed that C mobility, both across the vertical strata and between taxa, was highest during periods of active photoautotrophy. Parallel experiments with 13C-labeled organic substrates (acetate and glucose) showed comparably less exchange of C within the mat. Metabolite analysis showed rapid incorporation of 13C into molecules that can both comprise a portion of the extracellular polymeric substances in the system and serve to transport C between photoautotrophs and heterotrophs. Stable isotope proteomic analysis revealed rapid C exchange between cyanobacterial and associated heterotrophic community members during the day with decreased exchange at night. We observed strong diel control on the spatial exchange of freshly fixed C within tightly interacting mat communities suggesting a rapid redistribution, both spatially and taxonomically, primarily during daylight periods.

11.
Transl Behav Med ; 13(9): 694-699, 2023 09 12.
Artigo em Inglês | MEDLINE | ID: mdl-37011032

RESUMO

Masks and other non-pharmaceutical interventions can complement vaccines and treatments as a part of multilayered mitigation to reduce the burden of COVID-19 in high-risk settings like surges. Although N95s provide greater protection than cloth and procedure masks against airborne infectious illnesses, few people used N95s historically, potentially due to lack of familiarity and cost. The study was designed to examine the feasibility of distributing N95s during a COVID-19 surge. A follow-up survey summarized mask behavior. The investigators aimed to distribute 2,500 N95s to 500 adults in 5-packs with informational handouts at community locations during the COVID-19 Omicron BA.1 surge in New Orleans, Louisiana. A 1-month follow-up survey assessed utilization, safety perceptions, social diffusion of awareness of N95s, and purchase intentions. The investigators successfully distributed all 2,500 N95s during the peak of the BA.1 surge (December 13, 2021 to January 17, 2022). At 1-month follow-up, 96.7% of participants had tried an N95. They utilized an average of 3.42 (68.4%) of the five N95s, felt safer wearing N95s (Ps < 0.0001), discussed N95s with others (80.4%), and would wear N95s again if free (87.9%). Future utilization intentions were price sensitive. Communities will readily use public health tools like N95s when at risk and offered for free with useful information. Cost was identified as a key barrier to sustained utilization. Findings have immediate public policy implications for reducing national, regional, and organizational surges. The research provides an illustrative example of the importance of behavioral science in responding to public health crises.


Masks are a part of a comprehensive approach to reducing the burden of COVID-19 surges. High-quality masks, called N95 masks in the USA, provide better protection than cloth or blue procedure masks. Most people have not used N95s due to a lack of familiarity or cost. We tested a program to distribute N95s to the community during a COVID-19 surge. Specifically, we gave 2,500 N95s to 500 adults in 5-packs with informational handouts during the COVID-19 Omicron BA.1 surge in New Orleans, Louisiana. We requested recipients complete a 1-month follow-up survey. Overall, we were successful in distributing all 2,500 N95s during the peak of the winter 2021­2022 surge. By 1-month follow-up, nearly all recipients had tried an N95 and had used nearly 70% of the total given. They felt safer, discussed the masks with others, and would wear them again if free. Cost was a key barrier to using N95s in the future. After our study, the USA federal government implemented a program to distribute free N95s, but there are no policy plans to distribute free N95s during future winter surges or in response to vaccine-evading variants. Free N95 distribution programs would be popular and reduce the burden of COVID-19.


Assuntos
COVID-19 , Adulto , Humanos , COVID-19/prevenção & controle , Estudos de Viabilidade , Máscaras , Saúde Pública , Política Pública
12.
Eur Arch Psychiatry Clin Neurosci ; 273(2): 311-323, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36071277

RESUMO

Psychiatric patients are prone to mental health deterioration during the Covid-19 pandemic. Little is known about suicidality in psychiatric patients during the Covid-19 pandemic. This study is a retrospective chart review of psychiatric emergency department (pED) presentations with present or absent suicidality (5634 pED attendances, 4110 patients) in an academic pED in Berlin, Germany. Poisson regression analysis was performed on the effect of Covid-19 period on suicidality (suicidal ideation (SI), suicide plans (SP) or suicide attempt (SA)) during the first (3/2/2020-5/24/2020 "first-wave") and second (9/15/2020-3/1/2021 "second-wave") wave of the Covid-19 pandemic compared to the same periods one year earlier. During the first-wave the number of pED visits per person with SI, SP and SA was higher compared to one year earlier (SI RR = 1.614; p = 0.016; SP RR = 2.900; p = 0.004; SA RR = 9.862; p = 0.003). SI and SP were predicted by interaction between substance use disorder (SUD) and second-wave (SI RR = 1.305, p = 0.043; SP RR = 1.645, p = 0.018), SA was predicted by interaction between borderline personality disorder (BPD) and second-wave (RR = 7.128; p = 0.012). Suicidality increased during the first-wave of Covid-19 pandemic in our sample. In the second-wave this was found in patients with SUD and BPD. These patients may be at particular risk of suicidality during the Covid-19 pandemic.


Assuntos
COVID-19 , Transtornos Relacionados ao Uso de Substâncias , Suicídio , Humanos , Ideação Suicida , Estudos Retrospectivos , Pandemias , COVID-19/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Serviço Hospitalar de Emergência
13.
Emerg Med Australas ; 35(2): 194-199, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36200454

RESUMO

OBJECTIVE: To investigate patients presenting to EDs following the recent introduction of a shared electric scooter (e-scooter) scheme in Northern Territory (NT). METHODS: We conducted a prospective observational cohort study in Darwin, a regional city in NT, Australia with a population of approximately 150 000. Any patient who disclosed involvement of an e-scooter in the reason for their presentation to the ED was included. A descriptive analysis was derived for age, sex, triage time, alcohol level, injury type and the requirement of operating theatre, inpatient stay or ED discharge. Categorical variables were analysed using χ2 -tests, with odds ratios (ORs), 95% confidence intervals (CIs) and P-values reported. Costing analysis to ED of attendances and inpatient hospital admissions was undertaken. RESULTS: There were 111 presentations over the 8-month study period (January-September 2021). Forty-nine percent (n = 51) of patients were male and 51% (n = 54) were female. Extremity (n = 70) and craniofacial (n = 61) injuries were most common and approximately a quarter of patients (n = 24) required operative management for injuries sustained. Approximately half (n = 51) of patients were intoxicated and the average alcohol level of those tested was 0.18% (range 0.05-0.49%). The average cost per ED attendance was AU$777 and total cost of inpatient admissions being AU$352 255. All inpatient admissions were a result of injury while intoxicated. CONCLUSION: Harm minimisations strategies targeting implementation of alcohol testing and penalties for riders may be able to reduce the effect that the introduction of e-scooters on the strained health system in the NT.


Assuntos
Hospitalização , Alta do Paciente , Humanos , Masculino , Feminino , Northern Territory/epidemiologia , Estudos Prospectivos , Estudos Retrospectivos , Acidentes de Trânsito , Dispositivos de Proteção da Cabeça , Serviço Hospitalar de Emergência
14.
Int Rev Psychiatry ; 35(3-4): 268-276, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36519290

RESUMO

There is evidence that racial discrimination at different levels has a major impact on mental health over the whole life span. It is related generally to poor health, with the relationship being particularly strong for mental health. All forms of structural, institutionalised, interpersonal and internalised racism as well as the cumulative impact of intersectional discrimination appear to be linked to mental health and well-being. Studies also show links between effects of racial discrimination and neurophysiology especially on the brain volume. All forms of racism need to be addressed in inter- and transdisciplinary ways in order to dismantle racial discrimination. This review provides an overview of these interconnections.


Assuntos
Saúde Mental , Racismo , Humanos , Racismo/psicologia
15.
Int J Sex Health ; 35(1): 123-129, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38299008

RESUMO

Here we investigated how a history of experiencing unwanted advances-both sexual and romantic-impact a person's stress and strategies when rejecting future advances. In this study (N = 465; 71% women), women reported experiencing unwanted advances earlier in life compared to men, and these women were more likely to have greater worry over such advances. Additionally, women tended to worry more than men about the repercussions of rejecting these advances (e.g., being hit, being yelled at). Lastly, women were more likely to employ a myriad of strategies (e.g., run away, call a friend) to ensure their safety when rejecting an advance. In contrast, men were more likely to remain friends with the rejected person. Ultimately, women have to deal with rejecting advances at an early age and this early onset has consequences for future dating.

16.
Sci Rep ; 12(1): 22274, 2022 Dec 24.
Artigo em Inglês | MEDLINE | ID: mdl-36566294

RESUMO

In ferrofluid actuation systems, forces are generated by actively controlling pressure and flow within the fluid using an applied magnetic field. There are multiple contributing factors in force generation involving complex non-linear couplings between electromagnetic and fluid pressure fields. This brings significant challenges in theory-based design and optimization. In this paper, a theoretical model of pressure transmission between a ferrofluid and solid is derived starting from Maxwell's stress tensor and accounting for magnetic saturation within the fluid. This model shows that linear actuator designs based on orthogonal mode operation, where the field direction through the fluid is perpendicular to the motion direction, can provide the highest force capacity for a given field strength from the actuator coil. This is verified by theoretical analysis of some basic linear actuator topologies. The results are applied in the design and analysis of a novel piston-type linear actuator with sealed chamber and two internal electrical coils for bidirectional operation. Experimental measurements of both static and dynamic behaviour are shown to validate the described principles. The actuator produces smooth and precise flow-regulated motion, has zero intrinsic stiffness, and exhibits very low friction due to the suspension effect from ferrofluid layers within the actuator.

17.
Narrat Inq Bioeth ; 12(2): 118-120, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36373525
18.
Proc Biol Sci ; 289(1982): 20220978, 2022 09 14.
Artigo em Inglês | MEDLINE | ID: mdl-36069015

RESUMO

Differences in attitudes on social issues such as abortion, immigration and sex are hugely divisive, and understanding their origins is among the most important tasks facing human behavioural sciences. Despite the clear psychological importance of parenthood and the motivation to provide care for children, researchers have only recently begun investigating their influence on social and political attitudes. Because socially conservative values ostensibly prioritize safety, stability and family values, we hypothesized that being more invested in parental care might make socially conservative policies more appealing. Studies 1 (preregistered; n = 376) and 2 (n = 1924) find novel evidence of conditional experimental effects of a parenthood prime, such that people who engaged strongly with a childcare manipulation showed an increase in social conservatism. Studies 3 (n = 2610, novel data from 10 countries) and 4 (n = 426 444, World Values Survey data) find evidence that both parenthood and parental care motivation are associated with increased social conservatism around the globe. Further, most of the positive association globally between age and social conservatism is accounted for by parenthood. These findings support the hypothesis that parenthood and parental care motivation increase social conservatism.


Assuntos
Comparação Transcultural , Motivação , Atitude , Criança , Feminino , Humanos , Política , Gravidez , Inquéritos e Questionários
19.
Forensic Sci Int ; 334: 111244, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35395521

RESUMO

Estimates suggest billions of dollars are lost annually in the US due to fuel tax fraud. One method of fuel fraud is called "cocktailing" and involves blending products that are non-taxed, lower value, taxed at a lower rate, or unwanted/less-refined petroleum to diesel fuels. The goal of this study was to investigate compound specific isotope analysis (CSIA) using isotope ratio mass spectrometry (IRMS) for small aromatics contained in diesel fuel to determine whether this approach could be used to identify cocktailing and potentially fingerprint possible sources. However, the high chemical complexity of diesel fuels complicates CSIA owing to the need to fully separate individual compounds for effective isotope analysis. Therefore, different methods were investigated to selectively isolate aromatics for CSIA and evaluate these methods for isotopic fractionation. Analyses indicate that there is enough variability in isotopic ratios (δ2H and δ13C) between toluene samples obtained from different sources to use CSIA to differentiate/identify the origin of potential fuel adulterants. Three isolation methods were identified that provided sufficiently pure aromatic fractions for CSIA: selective solvent extraction, ionic liquid coated solid phase microextraction (SPME), and a combination of the two. However, due to the labor-intensive nature of selective solvent extraction, ionic liquid coated SPME represents the best method to quickly isolate aromatics from diesel fuel, without sacrificing selectivity or sensitivity. All methods tested can result in isotopic fractionation, but this can be compensated for by applying a correction factor. Furthermore, the chemical composition of a sample appeared to be important in the degree to which fractionation occurred during isolation. While the tested approaches for aromatic extraction from diesel showed promise, additional studies are required to refine and validate the methods prior to routine use in fuel cocktailing investigations.


Assuntos
Gasolina , Líquidos Iônicos , Isótopos de Carbono/análise , Cromatografia Gasosa-Espectrometria de Massas/métodos , Gasolina/análise , Líquidos Iônicos/análise , Isótopos/análise , Microextração em Fase Sólida
20.
Scholarsh Teach Learn Psychol ; 8(4): 404-408, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36844034

RESUMO

This pedagogical prime aimed to examine whether undergraduate education in personality psychology was associated with increases in dispositional intelligence, a key variable underlying social skills. The sample consisted of students enrolled in a small Introduction to Personality college course who completed a summative performance-based assessment of their conceptual reasoning that required a complex application of their understanding of personality. On the first day of class, the students completed a dispositional intelligence scale, demonstrating their pre-course understanding of how personal adjectives (e.g., insecure) correspond to particular personality dispositions (e.g., neuroticism). They took the same scale again on the last day of class to assess if learning about the Five-Factor Model (FFM) during the class was associated with increased dispositional intelligence scores. Results from this longitudinal study revealed that participants had an increase in dispositional intelligence from the first to last day of class (d = 0.89, p = .001), especially when perceiving the dispositions of openness (d=.59, p=.04) and agreeableness (d=.69, p=.019). In conclusion, a college personality course emphasizing the Five-Factor Model was associated with increases in a measure of personality understanding.

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