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1.
Eur Psychiatry ; 65(1): e41, 2022 Jun 28.
Article de Anglais | MEDLINE | ID: mdl-35762046

RÉSUMÉ

BACKGROUND: Mental illness is known to come along with a large mortality gap compared to thegeneral population and it is a risk for COVID-19 related morbidity andmortality. Achieving high vaccination rates in people with mental illness is therefore important. Reports are conflicting on whether vaccination rates comparable to those of the general population can be achieved and which variables represent risk factors for nonvaccination in people with mental illness. METHODS: The COVID Ψ Vac study collected routine data on vaccination status, diagnostic groups, sociodemographics, and setting characteristics from in- and day-clinic patients of 10 psychiatric hospitals in Germany in August 2021. Logistic regression modeling was used to determine risk factors for nonvaccination. RESULTS: Complete vaccination rates were 59% (n = 776) for the hospitalized patients with mental illness versus 64% for the regionally and age-matched general population. Partial vaccination rates were 68% (n = 893) for the hospitalised patients with mental illness versus 67% for the respective general population and six percentage (n = 74) of this hospitalized population were vaccinated during the hospital stay. Rates showed a large variation between hospital sites. An ICD-10 group F1, F2, or F4 main diagnosis, younger age, and coercive accommodation were further risk factors for nonvaccination in the model. CONCLUSIONS: Vaccination rates were lower in hospitalized people with mental illness than in the general population. By targeting at-risk groups with low-threshold vaccination programs in all health institutions they get in contact with, vaccination rates comparable to those in the general population can be achieved.


Sujet(s)
COVID-19 , Personnes atteintes de troubles mentaux , COVID-19/épidémiologie , COVID-19/prévention et contrôle , Vaccins contre la COVID-19 , Hospitalisation , Humains , Vaccination
2.
J Environ Manage ; 304: 114142, 2022 Feb 15.
Article de Anglais | MEDLINE | ID: mdl-34864516

RÉSUMÉ

Silage is an essential global feedstuff and an emitter of greenhouse gases. However, few studies have examined the formation of carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4) during the ensiling process. This study aimed to record the course of gas concentrations in forage during the ensiling process and determine the temporal variation in the (microbiological) formation processes. Grass and lucerne, each with two different dry matter (DM) concentrations (four variants, each n = 3), were ensiled in laboratory-scale barrels (120 L). Gas samples were taken from the headspace of the barrels and analysed using a gas chromatograph. The measurement period included the first 49 days of the ensiling process and the measurement interval was 0.5-48.0 h. For all variants, a rapid increase in CO2 concentration and a one-time N2O concentration peak was observed between ensiling hours 36 and 96. Lower DM concentration led to significantly faster CO2 production (p < 0.05). Lucerne forage and higher DM concentrations led to significantly increased N2O concentrations (p < 0.05). The extensive measurements demonstrated that butyric acid formation by clostridia contributes to CH4 formation; thus, lucerne silage had a significantly higher concentration from ensiling day 13 (p < 0.05). Therefore, malfermentation actively contributes to the formation of greenhouse gases. The method described here provides further insights into greenhouse gas formation during the ensiling process and can thus help to improve ensiling research and management.


Sujet(s)
Gaz à effet de serre , Ensilage , Fermentation , Medicago sativa , Poaceae , Ensilage/analyse
3.
Int J Soc Psychiatry ; 67(8): 1061-1067, 2021 12.
Article de Anglais | MEDLINE | ID: mdl-33832335

RÉSUMÉ

BACKGROUND: Psychiatry's evidence-, implementation-, and treatment-gaps. AIMS: The aim of this study is to uncover current trends and gaps in psychiatric research. Understanding where psychiatric research is going and where there might be blind spots is important to better align it with global mental health challenges and with service users' needs. METHOD: 10 top-ranking scientific journals (highest impact factors) in psychiatry were identified for 3 years (1999, 2009, 2019) using Clarivate Analytics. Metadata of all papers published by these journals in the index years were downloaded, and the relevance and relatedness of terms from all titles and abstracts were computed and visualized using VOSviewer. RESULTS: In 1999, prominent themes included schizophrenia and novel antipsychotics as well as research on families. Ten and 20 years later, neurobiological research, especially genetic and animal studies, had gained importance. Social and psychological themes were less present across all three time points. CONCLUSIONS: In high-ranking psychiatric journals, neurobiological research appears to gain importance while social themes are under-represented. In view of challenges such as implementation gaps, marginalization of people with severe mental illness and mental health risks through social inequality, there seems to be a dissociation between research and patient needs. We suggest a systems approach to bring together different kinds of knowledge.


Sujet(s)
Psychiatrie , Schizophrénie , Humains , Santé mentale
4.
Nanoscale ; 12(45): 22952-22957, 2020 Nov 26.
Article de Anglais | MEDLINE | ID: mdl-33196715

RÉSUMÉ

We present photocatalytically active, stable polymer-amorphous-MoS3-nanoparticle hybrid structures in aqueous solution. Below 10 nm MoS3 particles in the polymer exhibit an up to 7.5-fold increased photocatalytic activity compared to the neat nanoparticles without any additional photosensitizer. Supramolecular interactions are key in directing the structure formation of the hybrid assembly. The hybrid structures bear potential as novel affordable photocatalysts for solar energy conversion.

5.
Environ Pollut ; 267: 115513, 2020 Dec.
Article de Anglais | MEDLINE | ID: mdl-32891044

RÉSUMÉ

The aim of this study was to develop a new experimental setup to determine parallel the emissions of greenhouse gases (GHG) and volatile organic compounds (VOCs) from silage during the opening as well as the subsequent aerobic storage phase of the complete bale without wrapping film. For this purpose, a special silage respiration chamber was used in which a silage bale could be examined. The gas analysis (CO2, methanol, ethanol, ethyl acetate) of inlet, ambient and outlet air of the silage respiration chamber was carried out by photoacoustic spectroscopy. The gas samples taken inside the bale were analysed by gas chromatography for CO2, O2, CH4, and N2O. Three silage bales (grass and lucerne) as the smallest silage unit commonly used in practice were examined. The emission behaviour of the bales was recorded during experimental periods up to 55 days. The results allow a differentiation of the outgassing processes. On the one hand, gases produced during the anaerobic ensiling process (CO2, CH4, N2O) are released once in a large amount during the first experimental hours after opening the silage. On the other hand, a continuous outgassing process takes place, which is particularly true for the VOCs ethanol, methanol, and ethyl acetate, whereby VOC emissions increase with rising ambient air temperatures. In this study, the emissions during the first 600 experimental hours from the grass silage bale and lucerne silage bale were 2313 g and 2612 g CO2, 17.6 g and 145.2 g methanol, 132.3 g and 675.9 g ethanol, 55.1 g and 66.2 g ethyl acetate, respectively. Nevertheless, the focus of this study was on the technical recording of gas concentrations inside the silage bale itself and the emissions in the ambient air of the bale. For a better interpretation of the data, additional factors should be considered in further investigations.


Sujet(s)
Gaz à effet de serre , Composés organiques volatils , Dioxyde de carbone/analyse , Gaz/analyse , Medicago sativa , Méthane/analyse , Ensilage/analyse
6.
ACS Nano ; 14(6): 7492-7501, 2020 Jun 23.
Article de Anglais | MEDLINE | ID: mdl-32484657

RÉSUMÉ

Today's great challenges of energy and informational technologies are addressed with a singular compound, Li- and Na-doped few-layer graphene. All that is impossible for graphite (homogeneous and high-level Na doping) and unstable for single-layer graphene works very well for this structure. The transformation of the Raman G line to a Fano line shape and the emergence of strong, metallic-like electron spin resonance (ESR) modes attest the high level of graphene doping in liquid ammonia for both kinds of alkali atoms. The spin-relaxation time in our materials, deduced from the ESR line width, is 6-8 ns, which is comparable to the longest values found in spin-transport experiments on ultrahigh-mobility graphene flakes. This could qualify our material as a promising candidate in spintronics devices. On the other hand, the successful sodium doping, this being a highly abundant metal, could be an encouraging alternative to lithium batteries.

7.
Transcult Psychiatry ; 56(5): 1076-1093, 2019 10.
Article de Anglais | MEDLINE | ID: mdl-30091689

RÉSUMÉ

In 2015, the world saw 244 million international migrants. Migration has been shown to be both a protective and a risk factor for mental health, depending on circumstances. Furthermore, culture has an impact on perceptions and constructions of mental illness and identity, both of which can be challenged through migration. Using a qualitative research approach, we analysed five internationally acclaimed and influential novels and one theatre play that focus on aspects of identity, migration, and threatened mental health. As a mirror of society, fiction can help to understand perceptions of identity and mental suffering on an intrapsychic and societal level, while at the same time society itself can be influenced by works of fiction. Fiction is also increasingly used for didactic purposes in medical education. We found that the works of fiction discussed embrace a multifaceted biopsychosocial concept of mental illness. Constructs such as unstable premigration identity, visible minority status (in the host country) and identity confusion in second-generation migrants are conceptualised as risk factors for mental illness. Factors portrayed as protective comprised a stable premigration identity, being safe with a family member or good friend, (romantic) love, therapeutic writing, art, and the concept of time having an element of simultaneousness. This literature challenges the idiocentric model of identity. Analysing fictional texts on migration experiences can be a promising hypothesis-generating approach for further research.


Sujet(s)
Enseignement médical , Émigrants et immigrants/psychologie , La médecine dans la littérature , Troubles mentaux/psychologie , Minorités , Identification sociale , Humains , Recherche qualitative
8.
PeerJ ; 6: e4555, 2018.
Article de Anglais | MEDLINE | ID: mdl-29761035

RÉSUMÉ

Water quality deterioration caused by an enrichment in inorganic and organic matter due to anthropogenic inputs is one of the major local threats to coral reefs in Indonesia. However, even though bacteria are important mediators in coral reef ecosystems, little is known about the response of individual taxa and whole bacterial communities to these anthropogenic inputs. The present study is the first to investigate how bacterial community composition responds to small-scale changes in water quality in several coral reef habitats of the Spermonde Archipelago including the water column, particles, and back-reef sediments, on a densely populated and an uninhabited island. The main aims were to elucidate if (a) water quality indicators and organic matter concentrations differ between the uninhabited and the densely populated island of the archipelago, and (b) if there are differences in bacterial community composition in back-reef sediments and in the water column, which are associated with differences in water quality. Several key water quality parameters, such as inorganic nitrate and phosphate, chlorophyll a, and transparent exopolymer particles (TEP) were significantly higher at the inhabited than at the uninhabited island. Bacterial communities in sediments and particle-attached communities were significantly different between the two islands with bacterial taxa commonly associated with nutrient and organic matter-rich conditions occurring in higher proportions at the inhabited island. Within the individual reef habitats, variations in bacterial community composition between the islands were associated with differences in water quality. We also observed that copiotrophic, opportunistic bacterial taxa were enriched at the inhabited island with its higher chlorophyll a, dissolved organic carbon and TEP concentrations. Given the increasing strain on tropical coastal ecosystems, this study suggests that effluents from densely populated islands lacking sewage treatment can alter bacterial communities that may be important for coral reef ecosystem function.

9.
Front Microbiol ; 8: 662, 2017.
Article de Anglais | MEDLINE | ID: mdl-28473810

RÉSUMÉ

Coastal eutrophication is a key driver of shifts in bacterial communities on coral reefs. With fringing and patch reefs at varying distances from the coast the Spermonde Archipelago in southern Sulawesi, Indonesia offers ideal conditions to study the effects of coastal eutrophication along a spatially defined gradient. The present study investigated bacterial community composition of three coral reef habitats: the water column, sediments, and mucus of the hard coral genus Fungia, along that cross-shelf environmental and water quality gradient. The main research questions were: (1) How do water quality and bacterial community composition change along a coastal shelf gradient? (2) Which water quality parameters influence bacterial community composition? (3) Is there a difference in bacterial community composition among the investigated habitats? For this purpose, a range of key water parameters were measured at eight stations in distances from 2 to 55 km from urban Makassar. This was supplemented by sampling of bacterial communities of important microbial habitats using 454 pyrosequencing. Findings revealed that the population center Makassar had a strong effect on the concentrations of Chlorophyll a, suspended particulate matter (SPM), and transparent exopolymer particles (TEP), which were all significantly elevated at the inshore compared the other seven sites. Shifts in the bacterial communities were specific to each sampled habitat. Two OTUs, belonging to the genera Escherichia/Shigella (Gammaproteobacteria) and Ralstonia (Betaproteobacteria), respectively, both dominated the bacterial community composition of the both size fractions of the water column and coral mucus. The sampled reef sediments were more diverse, and no single OTUs was dominant. There was no gradual shift in bacterial classes or OTUs within the sampled habitats. In addition, we observed very distinct communities between the investigated habitats. Our data show strong changes in the bacterial community composition at the inshore site for water column and sediment samples. Alarmingly, there was generally a high prevalence of potentially pathogenic bacteria across the entire gradient.

10.
Psychiatr Serv ; 68(5): 524-527, 2017 May 01.
Article de Anglais | MEDLINE | ID: mdl-28142390

RÉSUMÉ

OBJECTIVE: The study examined inpatient treatment for major depressive disorder (MDD) when it is complicated by comorbid personality disorder. METHODS: In this descriptive analysis of a large data sample from 2013 (German VIPP data set) of 58,913 cases from 75 hospitals, three groups were compared: patients with MDD, patients with MDD and a comorbid personality disorder, and patients with a main diagnosis of personality disorder. RESULTS: Compared with MDD patients, those with comorbid personality disorder had higher rates of recurrent depression and nearly twice as many readmissions within one year, despite longer mean length of stay. Records of patients with comorbidities more often indicated accounting codes for "complex diagnostic procedures," "crisis intervention," and "constant observation." Patients with comorbid disorders differed from patients with a main diagnosis of personality disorder in treatment indicator characteristics and distribution of personality disorder diagnoses. CONCLUSIONS: Personality disorder comorbidity made MDD treatment more complex, and recurrence of MDD episodes and hospital readmission occurred more often than if patients had a sole MDD diagnosis.


Sujet(s)
Trouble dépressif majeur/thérapie , Services de santé mentale/statistiques et données numériques , Évaluation des résultats et des processus en soins de santé , Troubles de la personnalité , Adolescent , Adulte , Comorbidité , Trouble dépressif majeur/épidémiologie , Femelle , Allemagne/épidémiologie , Humains , Mâle , Adulte d'âge moyen , Troubles de la personnalité/épidémiologie , Récidive , Jeune adulte
11.
Neuropsychiatr ; 31(1): 32-38, 2017 Mar.
Article de Anglais | MEDLINE | ID: mdl-28168438

RÉSUMÉ

BACKGROUND: In his poem Gerontion (1920) Nobel laureate T.S. Eliot uses powerful language to give a fictional, highly condensed, first-person account of medical and psychological conditions that arise with old age: physical frailty, cognitive decline, sensory impairment, depressive symptoms with embitterment, social withdrawal and the psychological strain of having to face old age and make meaning of one's life. Surprisingly, he wrote the poem as a young man. METHODS: In this qualitative study, we used a hermeneutic approach to interpret Gerontion from a psychiatric perspective. We considered how Gerontion could help us to further an empathic understanding of these mental states, why a young man expresses himself through the voice of an old man and how the depressed-aggressive tone of the poem with its contempt and anti-Semitism can be interpreted. CONCLUSIONS: We concluded that Eliot was grappling with his identity as an American in England, as a sexually inhibited husband to a demanding wife, as a banker and poet and as someone who had witnessed the effects of WWI. Readers of the poem can simultaneously experience the suffering of an old man and the identity crisis of a young man. The poem can thus further insight into the development of contempt and promote empathy and professionalism in dealing with states such as late-life depression. Consequently it is well suited for use in medical classes on these issues, particularly because it is much shorter than a novel or film.


Sujet(s)
Vieillissement/psychologie , Littérature moderne , La médecine dans la littérature , Poésie comme sujet/histoire , Concept du soi , Sujet âgé , Histoire du 19ème siècle , Histoire du 20ème siècle , Humains , Mâle , États-Unis , Jeune adulte
12.
Int J Soc Psychiatry ; 62(7): 672-678, 2016 Nov.
Article de Anglais | MEDLINE | ID: mdl-27647604

RÉSUMÉ

BACKGROUND: T. S. Eliot's The Waste Land and A. Ginsberg's Howl are two landmark poems of the 20th century which have a unique way of dealing with emotional suffering. AIMS: (a) To explore the interplay between emotional suffering, conflicting relationships and societal perceptions; (b) to show the therapeutic effect of the writing process; (c) to analyse the portrayal of 'madness'; and (d) to discuss, in contemporary psychiatric terms, the 'solutions' offered by the poets. METHOD: Qualitative research with a narrative, hermeneutic approach. RESULTS: Against the background of wartime/genocide and postwar disillusionment, close relationships are projected onto societal perceptions. Concepts of (self-)control, compassion, empowerment and self-efficacy are offered as solutions to overcome feelings of despair. CONCLUSION: In a time of perceived societal and environmental crises, both poems help us understand people's fears and how to counteract them. Besides biological approaches, the narrative approach to the suffering human being has not lost its significance.

13.
J Neurosci ; 31(34): 12149-58, 2011 Aug 24.
Article de Anglais | MEDLINE | ID: mdl-21865457

RÉSUMÉ

The three-layered primary olfactory (piriform) cortex is the largest component of the olfactory cortex. Sensory and intracortical inputs converge on principal cells in the anterior piriform cortex (aPC). We characterize organization principles of the sensory and intracortical microcircuitry of layer II and III principal cells in acute slices of rat aPC using laser-scanning photostimulation and fast two-photon population Ca(2+) imaging. Layer II and III principal cells are set up on a superficial-to-deep vertical axis. We found that the position on this axis correlates with input resistance and bursting behavior. These parameters scale with distinct patterns of incorporation into sensory and associative microcircuits, resulting in a converse gradient of sensory and intracortical inputs. In layer II, sensory circuits dominate superficial cells, whereas incorporation in intracortical circuits increases with depth. Layer III pyramidal cells receive more intracortical inputs than layer II pyramidal cells, but with an asymmetric dorsal offset. This microcircuit organization results in a diverse hybrid feedforward/recurrent network of neurons integrating varying ratios of intracortical and sensory input depending on a cell's position on the superficial-to-deep vertical axis. Since burstiness of spiking correlates with both the cell's location on this axis and its incorporation in intracortical microcircuitry, the neuronal output mode may encode a given cell's involvement in sensory versus associative processing.


Sujet(s)
Voies olfactives/cytologie , Voies olfactives/physiologie , Cellules pyramidales/physiologie , Cellules réceptrices sensorielles/physiologie , Potentiels d'action/physiologie , Voies afférentes/cytologie , Voies afférentes/physiologie , Animaux , Cartographie cérébrale/méthodes , Calcium/physiologie , Femelle , Acide glutamique/physiologie , Mâle , Techniques de culture d'organes , Techniques de patch-clamp/méthodes , Rats , Rat Wistar
14.
Neuron ; 68(6): 1059-66, 2010 Dec 22.
Article de Anglais | MEDLINE | ID: mdl-21172609

RÉSUMÉ

Medial entorhinal cortex (MEC) plays an important role in physiological processes underlying navigation, learning, and memory. Excitatory cells in the different MEC layers project in a region-specific manner to the hippocampus. However, the intrinsic microcircuitry of the main excitatory cells in the superficial MEC layers is largely unknown. Using scanning photostimulation, we investigated the functional microcircuitry of two such cell types, stellate and pyramidal cells. We found cell-type-specific intralaminar and ascending interlaminar feedback inputs. The ascending interlaminar inputs display distinct organizational principles depending on the cell-type and its position within the superficial lamina: the spatial spread of inputs for stellate cells is narrower than for pyramidal cells, while inputs to pyramidal cells in layer 3, but not in layer 2, exhibit an asymmetric offset to the medial side of the cell's main axis. Differential laminar sources of excitatory inputs might contribute to the functional diversity of stellate and pyramidal cells.


Sujet(s)
Cortex entorhinal/cytologie , Cortex entorhinal/physiologie , Potentiels post-synaptiques excitateurs/physiologie , Réseau nerveux/cytologie , Réseau nerveux/physiologie , Animaux , Cellules pyramidales/cytologie , Cellules pyramidales/physiologie , Rats , Rat Wistar , Synapses/physiologie
15.
Phys Rev Lett ; 97(13): 136801, 2006 Sep 29.
Article de Anglais | MEDLINE | ID: mdl-17026062

RÉSUMÉ

C(59)N magnetic fullerenes were formed inside single-wall carbon nanotubes by vacuum annealing functionalized C(59)N molecules encapsulated inside the tubes. A hindered, anisotropic rotation of C(59)N was deduced from the temperature dependence of the electron spin resonance spectra near room temperature. Shortening of the spin-lattice relaxation time T(1) of C(59)N indicates a reversible charge transfer toward the host nanotubes above approximately 350 K. Bound C(59)N-C(60) heterodimers are formed at lower temperatures when C(60) is coencapsulated with the functionalized C(59)N. In the 10-300 K range, T(1) of the heterodimer shows a relaxation dominated by the conduction electrons on the nanotubes.

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