451 results match your criteria: "Carleton College[Affiliation]"

: Behavioral models suggest that strong tension-reduction alcohol-outcome expectancies (TREs) among drinkers should be associated with greater tension reduction after drinking. Yet, the few studies investigating this have found either no relationship or the opposite relationship.: We sought to explore this relationship by building upon the limitations of past studies and employing a placebo-controlled, within-subject experimental design.

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To conserve wide-ranging species in human-modified landscapes, it is essential to understand how animals selectively use or avoid cultivated areas. Use of agriculture leads to human-wildlife conflict, but evidence suggests that individuals may differ in their tendency to be involved in conflict. This is particularly relevant to wild elephant populations.

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The Significant Interest view entails that even if there were no medical reasons to have access to genetic knowledge, there would still be reason(s) for prospective parents to use an identity-release donor as opposed to an anonymous donor. This view does not depend on either the idea that genetic knowledge is profoundly prudentially important or that donor-conceived people have a right to genetic knowledge. Rather, it turns on general claims about (1) parents' obligations to help promote their children's well-being and (2) the connection between a person's well-being and the satisfaction of what I call their "worthwhile significant subjective interests.

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"American Indian" as a Racial Category in Public Health: Implications for Communities and Practice.

Am J Public Health

November 2021

Danielle R. Gartner (Sault Ste. Marie Tribe of Chippewa Indians) is with the Department of Epidemiology & Biostatistics, College of Human Medicine, Michigan State University, East Lansing. Rachel E. Wilbur (Tolowa descent and Chetco descent) is with the Department of Anthropology, College of Arts & Sciences, and the Carolina Population Center, University of North Carolina, Chapel Hill. Meredith L. McCoy (Turtle Mountain Band of Chippewa Indians descent) is with the Department of American Studies and the Department of History, Carleton College, Northfield, MN.

When public health considers the health and disease status of Indigenous people, it often does so using a racial lens. In recent decades, public health researchers have begun to acknowledge that commonly employed racial categories represent history, power dynamics, embodiment, and legacies of discrimination and racism, rather than innate biology. Even so, public health has not yet fully embraced an understanding of other components of identity formation for Indigenous people, including political status within Native nations.

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Pincer-supported metal/main-group bonds as platforms for cooperative transformations.

Dalton Trans

November 2021

Department of Chemistry, Carleton College, Northfield, MN 55057, USA.

Electron-rich late metals and electropositive main-group elements (metals and metalloids) can be combined to provide an ambiphilic façade for exploring metal-ligand cooperation, yet the instability of the metal/main-group bond frequently limits the study and application of such units. Incorporating main-group donors into pincer frameworks, where they are stabilized and held in proximity to the transition-metal partner, can allow discovery of new modes of reactivity and incorporation into catalytic processes. This Perspective summarizes common modes of cooperativity that have been demonstrated for pincer frameworks featuring metal/main-group bonds, highlighting similarities among boron, aluminium, and silicon donors and identifying directions for further development.

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Clinical profile of fatal familial insomnia: phenotypic variation in 129 polymorphisms and geographical regions.

J Neurol Neurosurg Psychiatry

March 2022

Department of Neurology, Xuanwu hospital, Capital Medical University, Beijing, People's Republic of China

Objective: Elucidate the core clinical and genetic characteristics and identify the phenotypic variation between different regions and genotypes of fatal familial insomnia (FFI).

Methods: A worldwide large sample of FFI patients from our case series and literature review diagnosed by genetic testing were collected. The prevalence of clinical symptoms and genetic profile were obtained, and then the phenotypic comparison between Asians versus non-Asians and 129Met/Met versus 129Met/Val were conducted.

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Language scientists often need to generate lists of related words, such as potential competitors. They may do this for purposes of experimental control (e.g.

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Three cyclo-penta-dienylmolybdenum(II) propionyl complexes featuring tri-aryl-phosphine ligands with different substituents, namely, dicarbon-yl(η-cyclo-penta-dien-yl)propion-yl(tri-phenyl-phosphane-κ)molybdenum(II), [Mo(CH)(CHO)(CHP)(CO)], (), dicarbon-yl(η-cyclo-penta-dien-yl)propion-yl[tris-(4-fluoro-phen-yl)phosphane-κ]molybdenum(II), [Mo(CH)(CHO)(CHFP)(CO)], (), and dicarbon-yl(η-cyclo-penta-dien-yl)propion-yl[tris-(4-meth-oxy-phen-yl)phosphane-κ]molybdenum(II) dichloromethane solvate, [Mo(CH)(CHO)(CHOP)(CO)]·CHCl, (), have been prepared from the corresponding ethyl complexes phosphine-induced migratory insertion. These complexes exhibit four-legged piano-stool geom-etries with mol-ecular structures quite similar to each other and to related acetyl complexes. The extended structures of the three complexes differ somewhat, with the substituent of the tri-aryl-phosphine of () (fluoro) or () (meth-oxy) engaging in non-classical C-H⋯F or C-H⋯O hydrogen-bonding inter-actions.

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We study the quantum dissipative Duffing oscillator across a range of system sizes and environmental couplings under varying semiclassical approximations. Using spatial complexity metrics based on Kullback-Leibler distances between phase-space attractors and temporal complexity metrics based on the Lyapunov exponent, we isolate the effect of the environment on quantum-classical differences. Moreover, we quantify the system sizes where quantum dynamics cannot be simulated using semiclassical or noise-added classical approximations.

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Genomic Variation Influences Fitness in Marine Hydrothermal Systems.

Front Microbiol

August 2021

Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States.

Hydrogenotrophic methanogens are ubiquitous chemoautotrophic archaea inhabiting globally distributed deep-sea hydrothermal vent ecosystems and associated subseafloor niches within the rocky subseafloor, yet little is known about how they adapt and diversify in these habitats. To determine genomic variation and selection pressure within methanogenic populations at vents, we examined five single cell amplified genomes (SAGs) in conjunction with 15 metagenomes and 10 metatranscriptomes from venting fluids at two geochemically distinct hydrothermal vent fields on the Mid-Cayman Rise in the Caribbean Sea. We observed that some lineages and their transcripts were more abundant than others in individual vent sites, indicating differential fitness among lineages.

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Selective Targeting of Class I Histone Deacetylases in a Model of Human Osteosarcoma.

Cancers (Basel)

August 2021

Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA.

Dysregulation of histone deacetylases (HDACs) is associated with the pathogenesis of human osteosarcoma, which may present an epigenetic vulnerability as well as a therapeutic target. Domatinostat (4SC-202) is a next-generation class I HDAC inhibitor that is currently being used in clinical research for certain cancers, but its impact on human osteosarcoma has yet to be explored. In this study, we report that 4SC-202 inhibits osteosarcoma cell growth in vitro and in vivo.

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Human social interactions often involve carefully synchronized behaviours. Musical performance in particular features precise timing and depends on the differentiation and coordination of musical/social roles. Here, we study the influence of musical/social roles, individual musicians and different ensembles on rhythmic synchronization in Malian drum ensemble music, which features synchronization accuracy near the limits of human performance.

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As biodiversity loss accelerates globally, understanding environmental influence over biodiversity-ecosystem functioning (BEF) relationships becomes crucial for ecosystem management. Theory suggests that resource supply affects the shape of BEF relationships, but this awaits detailed investigation in marine ecosystems. Here, we use deep-sea chemosynthetic methane seeps and surrounding sediments as natural laboratories in which to contrast relationships between BEF proxies along with a gradient of trophic resource availability (higher resource methane seep, to lower resource photosynthetically fuelled deep-sea habitats).

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Tracking Microbial Evolution in the Subseafloor Biosphere.

mSystems

August 2021

Department of Biology, Carleton College, Northfield, Minnesota, USA.

The deep marine subsurface constitutes a massive biosphere that hosts a multitude of archaea, bacteria, and viruses across a diversity of habitats. These microbes play key roles in mediating global biogeochemical cycles, and the marine subsurface is thought to have been among the earliest habitats for life on Earth. Yet we have a poor understanding of what forces govern the evolution of subsurface microbes over time.

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Clinimetric properties of the Smoking Abstinence Expectancies Questionnaire.

Addict Behav

December 2021

Department of Health Sciences, University of Florence, Via di San Salvi 12, 50135 Florence, Italy; Department of Psychiatry & Neuropsychology, Maastricht University, PO Box 616, Maastricht, The Netherlands. Electronic address:

Smoking abstinence expectancies are beliefs about negative and positive short-term psychological and physiological consequences of not smoking. The Smoking Abstinence Expectancies Questionnaire (SAEQ) is a widely used Patient-Reported Outcome Measure (PROM) to assess smoking abstinence expectancies. It has four subscales: negative mood, somatic symptoms, harmful consequences, positive consequences.

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Meat from wildlife species (bushmeat) represents a major source of dietary protein in low- and middle-income countries where humans and wildlife live in close proximity. Despite the occurrence of zoonotic pathogens in wildlife, their prevalence in bushmeat remains unknown. To assess the risk of exposure to major pathogens in bushmeat, a total of 3784 samples, both fresh and processed, were collected from three major regions in Tanzania during both rainy and dry seasons, and were screened by real-time PCR for the presence of DNA signatures of Bacillus anthracis (B.

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We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 dataset. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks, and, for the first time, kink-kink collisions. A template-based search for short-duration transient signals does not yield a detection.

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Biodiversity losses are a major driver of global changes in ecosystem functioning. While most studies of the relationship between biodiversity and ecosystem functioning have examined randomized species losses, trait-based filtering associated with species-specific vulnerability to drivers of diversity loss can strongly influence how ecosystem functioning responds to declining biodiversity. Moreover, the responses of ecosystem functioning to diversity loss may be mediated by environmental variability interacting with the suite of traits remaining in depauperate communities.

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Microbial sulfur metabolism contributes to biogeochemical cycling on global scales. Sulfur metabolizing microbes are infected by phages that can encode auxiliary metabolic genes (AMGs) to alter sulfur metabolism within host cells but remain poorly characterized. Here we identified 191 phages derived from twelve environments that encoded 227 AMGs for oxidation of sulfur and thiosulfate (dsrA, dsrC/tusE, soxC, soxD and soxYZ).

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The comblike spectrum of a white light-illuminated Fabry-Pérot etalon can serve as a cost-effective and stable reference for precise Doppler measurements. Understanding the stability of these devices across their broad (hundreds of nanometers) spectral bandwidths is essential to realizing their full potential as Doppler calibrators. However, published descriptions remain limited to small bandwidths or short time spans.

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In Nepal, preventable death and disability from burn injuries are common due to poor population-level spatial access to organized burn care. Most severe burns are referred to a single facility nationwide, often after suboptimal burn stabilization and/or significant care delay. Therefore, we aimed to identify existing first-level hospitals within Nepal that would optimize population-level access as "burn stabilization points" if their acute burn care capabilities are strengthened.

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The COVID-19 pandemic has challenged undergraduate instructors and students in an unprecedented manner. Each has needed to find creative ways to continue the engaged teaching and learning process in an environment defined by physical separation and emotional anxiety and uncertainty. As a potential tool to meet this challenge, we developed a set of curricular materials that combined our respective life science teaching interests with the real-time scientific problem of the COVID-19 pandemic in progress.

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Transport Modeling of Locally Photogenerated Excitons in Halide Perovskites.

J Phys Chem Lett

April 2021

Department of Physics and Astronomy, University of California-Davis, One Shields Avenue, Davis, California 95616, United States.

Excitons have fundamental impacts on optoelectronic properties of semiconductors. Halide perovskites, with long carrier lifetimes and ionic crystal structures, may support highly mobile excitons because the dipolar nature of excitons suppresses phonon scattering. Inspired by recent experimental progress, we perform device modeling to rigorously analyze exciton formation and transport in methylammonium lead triiodide under local photoexcitation by using a finite element method.

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Background And Objectives: Social networks affect the health and well-being of older adults. Advancements in technology (e.g.

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Phytopathogenic bacteria secrete type III effector (T3E) proteins directly into host plant cells. T3Es can interact with plant proteins and frequently manipulate plant host physiological or developmental processes. The proper subcellular localization of T3Es is critical for their ability to interact with plant targets, and knowledge of T3E localization can be informative for studies of effector function.

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