82 research outputs found
Copper(I) Complexes of Heterocyclic Thiourea Ligands
The coordination of heterocyclic thiourea ligands (L = N-(2-pyridyl)-Nā²-phenylthiourea (1), N-(2-pyridyl)-Nā²-methylthiourea (2), N-(3-pyridyl)-Nā²-phenylthiourea (3), N-(3-pyridyl)-Nā²-methylthiourea (4), N-(4-pyridyl)-Nā²-phenylthiourea (5), N-(2-pyrimidyl)-Nā²-phenylthiourea (6), N-(2-pyrimidyl)-Nā²-methylthiourea (7), N-(2-thiazolyl)-Nā²-methylthiourea (8), N-(2-benzothiazolyl)-Nā²-methylthiourea (9), N,Nā²-bis(2-pyridyl)thiourea (10) and N,Nā²-bis(3-pyridyl)thiourea (11)) with CuX (X = Cl, Br, I, NO3) has been investigated. CuX:L product stoichiometries of 1:1ā1:5 were found, with 1:1 being most common. X-ray structures of four 3-coordinate mononuclear CuXL2 complexes (CuCl(6)2, CuCl(7)2, CuBr(6)2, and CuBr(9)2) are reported. In contrast, CuBr(1)2 is a 1D sulfur-bridged polymer. CuIL structures (L = 7, 8) are 1D chains with corner-sharing Cu2(Ī¼-I)2 and Cu2(Ī¼-S)2 units, and CuCl(10) is a 2D network having Ī¼-Cl and N-/S-bridging L. Two [CuL2]NO3 structures are reported: a mononuclear 4-coordinate copper complex with chelating ligands (L = 10) and a 1D link-chain with N-/S-bridging L (L = 3). Two ligand oxidative cyclizations were encountered during crystallization. CuI crystallized with 6 to produce zigzag ladder polymer [(CuI)2(12)]Ā·Ā½CH3CN (12 = N-(pyrimidin-2-yl)benzo[d]thiazol-2-amine) and CuNO3 crystallized with 10 to form [Cu2(NO3)(13)2(MeCN)]NO3 (13 = dipyridyltetraazathiapentalene)
Mental Health and Psychosocial Functioning in Recently Separated U.S. Women Veterans: Trajectories and Bi-Directional Relationships
Prior research on the relationship between veteransā mental health and psychosocial functioning has primarily relied on male samples. Here, we investigated prospective longitudinal relationships between mental health and psychosocial functioning in 554 female Iraq and Afghanistan War veterans who were surveyed three times between two- and seven-years following separation from service. Mixed effects modeling revealed that increasing depression and posttraumatic stress disorder (PTSD) severity predicted declines in work functioning. Increasing PTSD severity predicted declining parental functioning and worsening depression predicted a decline in relationship functioning. In turn, decreased work and intimate relationship functioning predicted increased PTSD and depression symptom severity suggesting bi-directional effects between mental health and psychosocial functioning. An examination of the effect of deployment stressors on psychosocial functioning revealed that deployment sexual harassment was the strongest predictor of decreased psychosocial functioning across all domains. Evidence for the reciprocal nature of relationships between mental health and psychosocial functioning underscore the need for treatment targeted at PTSD and depression, as well as work and relationship functioning to improve outcomes for women veterans
Unexplained Practice Variation in Primary Care Providers' Concern for Pediatric Obstructive Sleep Apnea
Objective
To examine primary care provider (PCP) screening practice for obstructive sleep apnea (OSA) and predictive factors for screening habits. A secondary objective was to describe the polysomnography (PSG) completion proportion and outcome. We hypothesized that both provider and child health factors would predict PCP suspicion of OSA.
Methods
A computer decision support system that automated screening for snoring was implemented in five urban primary care clinics in Indianapolis, Indiana. We studied 1086 snoring children between 1 and 11 years seen by 26 PCPs. We used logistic regression to examine the association between PCP suspicion of OSA and child demographics, child health characteristics, provider characteristics, and clinic site.
Results
PCPs suspected OSA in 20% of snoring children. Factors predicting PCP concern for OSA included clinic site (p < .01; OR=0.13), Spanish language (p < .01; OR=0.53), provider training (p=.01; OR=10.19), number of training years (p=.01; OR=4.26) and child age (p<.01), with the youngest children least likely to elicit PCP concern for OSA (OR=0.20). No patient health factors (e.g., obesity) were significantly predictive. Proportions of OSA suspicion were variable between clinic sites (range 6% to 28%) and between specific providers (range 0% to 63%). Of children referred for PSG (n=100), 61% completed the study. Of these, 67% had OSA.
Conclusions
Results suggest unexplained small area practice variation in PCP concern for OSA amongst snoring children. It is likely that many children at-risk for OSA remain unidentified. An important next step is to evaluate interventions to support PCPs in evidence-based OSA identification
Exploration into Expanding the Burlington SASH (Seniors Aging Safely at Home) Program
Background: In 2009, the Cathedral Square Corporation partnered with community provider organizations* to design a model for in-home services and support known as Seniors Aging Safely at Home (SASH). This comprehensive program, implemented at Heineberg Senior Housing in the New North End of Burlington, VT., combines health support, education, and social activities to create a safe and fulfilling environment for participants. Cathedral Squareplans to extend their SASH program to New North End (NNE) seniors residing in their own homes. However, the current and future needs of the NNE senior population (defined here as individuals age 50 and older) are not well known. NORCs are communities in which the population has aged in place, resulting in a high proportion of seniors living in one area. Neighborhoods with this dynamic have begun to organize programs which provide a variety of services to their seniors, including yard-work, educational workshops, social opportunities, and access to health care services. Village models are similar, but tend to be designed more intentionally as senior-supporting neighborhoods rather than arising naturally as the local population ages. By looking into current community models and by investigating the needs of the NNE senior population, Cathedral Square will be further equipped to offer important services to those who are interested.https://scholarworks.uvm.edu/comphp_gallery/1050/thumbnail.jp
Captive labour: asylum seekers, migrants and employment in UK immigration removal centres
The steady growth in the use of immigration detention under the UK's New Labour government has been mirrored by the concurrent development of a new form of labour market within immigration removal centres (IRCs). This market has grown out of the long history of what some label as exploitative employment practices used amongst the wider prison population. It relies upon a subtle form of coercion which ensures compliance and discipline and, in so doing, provides a cheap and easily exploitable pool of labour for private sector companies. The research for this article draws on findings from prison inspection reports and the annual reports of independent monitoring boards
Consequences of gas flux model choice on the interpretation of metabolic balance across 15 lakes
Ecosystem metabolism and the contribution of carbon dioxide from lakes to the atmosphere can be estimated from free-water gas measurements through the use of mass balance models, which rely on a gas transfer coefficient (k) to model gas exchange with the atmosphere. Theoretical and empirically based models of k range in complexity from wind-driven power functions to complex surface renewal models; however, model choice is rarely considered in most studies of lake metabolism. This study used high-frequency data from 15 lakes provided by the Global Lake Ecological Observatory Network (GLEON) to study how model choice of k influenced estimates of lake metabolism and gas exchange with the atmosphere. We tested 6 models of k on lakes chosen to span broad gradients in surface area and trophic states; a metabolism model was then fit to all 6 outputs of k data. We found that hourly values for k were substantially different between models and, at an annual scale, resulted in significantly different estimates of lake metabolism and gas exchange with the atmosphere
A TraitāBased Framework for Assessing the Vulnerability of Marine Species to Human Impacts
Marine species and ecosystems are widely affected by anthropogenic stressors, ranging from pollution and fishing to climate change. Comprehensive assessments of how species and ecosystems are impacted by anthropogenic stressors are critical for guiding conservation and management investments. Previous global risk or vulnerability assessments have focused on marine habitats, or on limited taxa or specific regions. However, information about the susceptibility of marine species across a range of taxa to different stressors everywhere is required to predict how marine biodiversity will respond to human pressures. We present a novel framework that uses life-history traits to assess speciesā vulnerability to a stressor, which we compare across more than 44,000 species from 12 taxonomic groups (classes). Using expert elicitation and literature review, we assessed every combination of each of 42 traits and 22 anthropogenic stressors to calculate each speciesā or representative species groupās sensitivity and adaptive capacity to stressors, and then used these assessments to derive their overall relative vulnerability. The stressors with the greatest potential impact were related to biomass removal (e.g., fisheries), pollution, and climate change. The taxa with the highest vulnerabilities across the range of stressors were mollusks, corals, and echinoderms, while elasmobranchs had the highest vulnerability to fishing-related stressors. Traits likely to confer vulnerability to climate change stressors were related to the presence of calcium carbonate structures, and whether a species exists across the interface of marine, terrestrial, and atmospheric realms. Traits likely to confer vulnerability to pollution stressors were related to planktonic state, organism size, and respiration. Such a replicable, broadly applicable method is useful for informing ocean conservation and management decisions at a range of scales, and the framework is amenable to further testing and improvement. Our framework for assessing the vulnerability of marine species is the first critical step toward generating cumulative human impact maps based on comprehensive assessments of species, rather than habitats
The Lantern, 2011-2012
ā¢ Frangipani ā¢ A Shadow ā¢ Dear Anne, In this Place, Stringbean Girls ā¢ Back to a Dandelion ā¢ How to Plant a Room ā¢ Swimming Pool Poem 30 ā¢ The Naming of Daughters ā¢ Berman Museum Photographs ā¢ Truth or Dare ā¢ The Song of Remembrance, L\u27vov, Poland, 1940 ā¢ Headlights ā¢ Prayer of Thanks ā¢ Numbers Game ā¢ Pediment ā¢ Home Sick ā¢ Lust ā¢ Sand Lining Instructions ā¢ A-A-Ask a Question ā¢ Flash Cards ā¢ Columbus Day ā¢ Mr. Yoest Gives His Report to the Police Officers on Wednesday Night ā¢ Gender Trouble ā¢ The Internet Connection at Ursinus College ā¢ Assuming You\u27ll Still be Here ā¢ 10/28/11, Third Poem ā¢ October ā¢ Actions that Affirm and Confirm Us as a Community ā¢ Why I Hate The Lantern ā¢ Confessions of an Ex-Vegetarian ā¢ Run ā¢ Lunch at Caltort ā¢ Schemers ā¢ You Will Make Beautiful Babies in America ā¢ The Black Dirt Region ā¢ Il Travatore ā¢ Ghost Story ā¢ Blue Eyes and Sunny Skies ā¢ A Little Sincerity ā¢ The Bookstore ā¢ The Opposite of Serendipity ā¢ The Human Doll ā¢ Evil Deeds ā¢ Francesca ā¢ Sunday Morning ā¢ Jersey Aesthetic ā¢ Jump! ā¢ Behind Reimert ā¢ Seaweed in New Zealand ā¢ Tombee de L\u27elegance ā¢ The Window ā¢ Esperando ā¢ Rainbow to the Heavens ā¢ Encased ā¢ In Springtime ā¢ A Fiesolan Monk\u27s Room ā¢ Inside a Bone ā¢ Neon Indian ā¢ Moments of Clarity ā¢ OneFeral: A Feral Self-Portrait ā¢ Cover Image: The Conquerorhttps://digitalcommons.ursinus.edu/lantern/1177/thumbnail.jp
Genome-enabled insights into the biology of thrips as crop pests
Background
The western flower thrips, Frankliniella occidentalis (Pergande), is a globally invasive pest and plant virus vector on a wide array of food, fiber, and ornamental crops. The underlying genetic mechanisms of the processes governing thrips pest and vector biology, feeding behaviors, ecology, and insecticide resistance are largely unknown. To address this gap, we present the F. occidentalis draft genome assembly and official gene set.
Results
We report on the first genome sequence for any member of the insect order Thysanoptera. Benchmarking Universal Single-Copy Ortholog (BUSCO) assessments of the genome assembly (size = 415.8 Mb, scaffold N50 = 948.9 kb) revealed a relatively complete and well-annotated assembly in comparison to other insect genomes. The genome is unusually GC-rich (50%) compared to other insect genomes to date. The official gene set (OGS v1.0) contains 16,859 genes, of which ~ 10% were manually verified and corrected by our consortium. We focused on manual annotation, phylogenetic, and expression evidence analyses for gene sets centered on primary themes in the life histories and activities of plant-colonizing insects. Highlights include the following: (1) divergent clades and large expansions in genes associated with environmental sensing (chemosensory receptors) and detoxification (CYP4, CYP6, and CCE enzymes) of substances encountered in agricultural environments; (2) a comprehensive set of salivary gland genes supported by enriched expression; (3) apparent absence of members of the IMD innate immune defense pathway; and (4) developmental- and sex-specific expression analyses of genes associated with progression from larvae to adulthood through neometaboly, a distinct form of maturation differing from either incomplete or complete metamorphosis in the Insecta.
Conclusions
Analysis of the F. occidentalis genome offers insights into the polyphagous behavior of this insect pest that finds, colonizes, and survives on a widely diverse array of plants. The genomic resources presented here enable a more complete analysis of insect evolution and biology, providing a missing taxon for contemporary insect genomics-based analyses. Our study also offers a genomic benchmark for molecular and evolutionary investigations of other Thysanoptera species
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