173 research outputs found

    Theoretical Studies of Spectroscopy and Dynamics of Hydrated Electrons.

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    Airspace safety

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    ARTIKELEN: P.A.M. Verrest en J.A.C. Bevers - Rechtshandhaving in het luchtruim R.P. Bron en D. de Hoog - Civiele luchtvaart en terroristische incidenten, historische ontwikkelingen en toekomstige trends W.C.J.M. van Dijk - Toegang tot een veilig luchtruim; 'security' op luchthavens P.M.J. Mendes de Leon, m.m.v. M. Gurvits - De ontwikkeling van een trans-Atlantische luchtvaartrelatie in de periode 1992-2007 R.M. Schnitker - Het melden van voorvallen in de luchtvaart binnen een 'just culture' B. Baksteen - Dilemma's van een gezagvoerder F.G. von der Dunk - Ruimtepuin en ruimterecht Internetsites. SAMENVATTING: Gezien de internationale context roept het streven naar veiligheid in het luchtruim tal van interessante vragen op op het terrein van wet- en regelgeving, internationale verdragen, rechtsmacht, rechtshandhaving en -vervolging. Er bestaat een grote variëteit aan overtredingen en misdrijven die kunnen worden begaan, zowel delicten aan boord van vliegtuigen als tegen en met het gebruik van vliegtuigen. Vanuit het perspectief van de reguliere rechtshandhaving zijn de omstandigheden waaronder luchttransport plaatsvindt uniek: in een vrijwel geïsoleerd en kwetsbaar voertuig worden internationale grenzen met grote snelheden gepasseerd

    Understanding the Role of Religious Comfort and Strain on Depressive Symptoms in an Inpatient Psychiatric Setting

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    Understanding the role of religion in mental illness has always been complicated as some people turn to religion to cope with their illness, whereas others turn away. The overarching purpose of this study was to draw on quantitative and qualitative information to illuminate ways in which religiousness might be associated with changes in depressive symptomatology in a spiritually integrated inpatient treatment program. This repeated measures mixed method study examined the relations among religious comfort (RC), religious strain (RS), and depression in an inpatient psychiatric sample. Adult inpatients (N=248; Mage = 40.78 years; SD = 18.97) completed measures of RC, RS, and depression at pre- and post-treatment. Focusing on patient responses to open-ended questions regarding spiritual perspectives on their mental illness, qualitative themes were deduced via content analytic coding procedures to further clarify quantitative findings. Autoregressive cross-lagged panel models were used to test potential reciprocal influences among RC, RS, and depressive symptomatology between admission and discharge. Scores on RS decreased, whereas scores on RC increased. At both intake and discharge, depression was inversely associated with RC and directly correlated with RS. In addition, RC on admission was inversely associated with depressive symptom severity at discharge, whereas RS on admission did not predict later depression. Religious affiliation was also positively associated with RC. This is the first study to document a direct association between RS and depression, along with an inverse association with RC, in an inpatient psychiatric sample

    Ammoniated electron as a solvent stabilized multimer radical anion

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    The excess electron in liquid ammonia ("ammoniated electron") is commonly viewed as a cavity electron in which the s-type wave function fills the interstitial void between 6-9 ammonia molecules. Here we examine an alternative model in which the ammoniated electron is regarded as a solvent stabilized multimer radical anion, as was originally suggested by Symons [Chem. Soc. Rev. 1976, 5, 337]. In this model, most of the excess electron density resides in the frontier orbitals of N atoms in the ammonia molecules forming the solvation cavity; a fraction of this spin density is transferred to the molecules in the second solvation shell. The cavity is formed due to the repulsion between negatively charged solvent molecules. Using density functional theory calculations for small ammonia cluster anions in the gas phase, it is demonstrated that such core anions would semi-quantitatively account for the observed pattern of Knight shifts for 1-H and 14-N nuclei observed by NMR spectroscopy and the downshifted stretching and bending modes observed by infrared spectroscopy. It is speculated that the excess electrons in other aprotic solvents (but not in water and alcohols) might be, in this respect, analogous to the ammoniated electron, with substantial transfer of the spin density into the frontier N and C orbitals of methyl, amino, and amide groups forming the solvation cavity.Comment: 34 pages, 12 figures; to be submitted to J Phys Chem

    Intra-Genomic Ribosomal RNA Polymorphism and Morphological Variation in Elphidium macellum Suggests Inter-Specific Hybridization in Foraminifera

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    Elphidium macellum is a benthic foraminifer commonly found in the Patagonian fjords. To test whether its highly variable morphotypes are ecophenotypes or different genotypes, we analysed 70 sequences of the SSU rRNA gene from 25 specimens. Unexpectedly, we identified 11 distinct ribotypes, with up to 5 ribotypes co-occurring within the same specimen. The ribotypes differ by varying blocks of sequence located at the end of stem-loop motifs in the three expansion segments specific to foraminifera. These changes, distinct from typical SNPs and indels, directly affect the structure of the expansion segments. Their mosaic distribution suggests that ribotypes originated by recombination of two or more clusters of ribosomal genes. We propose that this expansion segment polymorphism (ESP) could originate from hybridization of morphologically different populations of Patagonian Elphidium. We speculate that the complex geological history of Patagonia enhanced divergence of coastal foraminiferal species and contributed to increasing genetic and morphological variation

    A many-analysts approach to the relation between religiosity and well-being

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    The relation between religiosity and well-being is one of the most researched topics in the psychology of religion, yet the directionality and robustness of the effect remains debated. Here, we adopted a many-analysts approach to assess the robustness of this relation based on a new cross-cultural dataset (N=10,535 participants from 24 countries). We recruited 120 analysis teams to investigate (1) whether religious people self-report higher well-being, and (2) whether the relation between religiosity and self-reported well-being depends on perceived cultural norms of religion (i.e., whether it is considered normal and desirable to be religious in a given country). In a two-stage procedure, the teams first created an analysis plan and then executed their planned analysis on the data. For the first research question, all but 3 teams reported positive effect sizes with credible/confidence intervals excluding zero (median reported β=0.120). For the second research question, this was the case for 65% of the teams (median reported β=0.039). While most teams applied (multilevel) linear regression models, there was considerable variability in the choice of items used to construct the independent variables, the dependent variable, and the included covariates

    A Many-analysts Approach to the Relation Between Religiosity and Well-being

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    The relation between religiosity and well-being is one of the most researched topics in the psychology of religion, yet the directionality and robustness of the effect remains debated. Here, we adopted a many-analysts approach to assess the robustness of this relation based on a new cross-cultural dataset (N = 10, 535 participants from 24 countries). We recruited 120 analysis teams to investigate (1) whether religious people self-report higher well-being, and (2) whether the relation between religiosity and self-reported well-being depends on perceived cultural norms of religion (i.e., whether it is considered normal and desirable to be religious in a given country). In a two-stage procedure, the teams first created an analysis plan and then executed their planned analysis on the data. For the first research question, all but 3 teams reported positive effect sizes with credible/confidence intervals excluding zero (median reported β = 0.120). For the second research question, this was the case for 65% of the teams (median reported β = 0.039). While most teams applied (multilevel) linear regression models, there was considerable variability in the choice of items used to construct the independent variables, the dependent variable, and the included covariates

    A many-analysts approach to the relation between religiosity and well-being

    Get PDF
    The relation between religiosity and well-being is one of the most researched topics in the psychology of religion, yet the directionality and robustness of the effect remains debated. Here, we adopted a many-analysts approach to assess the robustness of this relation based on a new cross-cultural dataset (N=10,535 participants from 24 countries). We recruited 120 analysis teams to investigate (1) whether religious people self-report higher well-being, and (2) whether the relation between religiosity and self-reported well-being depends on perceived cultural norms of religion (i.e., whether it is considered normal and desirable to be religious in a given country). In a two-stage procedure, the teams first created an analysis plan and then executed their planned analysis on the data. For the first research question, all but 3 teams reported positive effect sizes with credible/confidence intervals excluding zero (median reported β=0.120). For the second research question, this was the case for 65% of the teams (median reported β=0.039). While most teams applied (multilevel) linear regression models, there was considerable variability in the choice of items used to construct the independent variables, the dependent variable, and the included covariates

    Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region

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    We report here that DSDP Site SS2A, cored with the hydraulic piston corer on the west flank of RockaU Bank, recovered an undisturbed sequence of alternating white deep-sea carbonate oozes and dark-coloured layers that are rich in glacial debris. Oxygen isotope analysis of the sequence together with detailed nannofossil and palaeomagnetic stratigraphy shows that the first major horizon of ice-rafting occurred at about 2.4 Myr, and was preceded by a minor pulse of ice-rafting at about 2.5 Myr. The carbon isotope record shows that the site has been bathed by a water mass of similar characteristics to present-day North Atlantic deep water at least since 3.5 Myr
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