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We describe the scientific goals and survey design of the First Large Absorption Survey in H i (FLASH), a wide field survey for 21-cm line absorption in neutral atomic hydrogen (H i) at intermediate cosmological redshifts. FLASH will be carried out with the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope and is planned to cover the sky south of
$\delta \approx +40\,\deg$
at frequencies between 711.5 and 999.5 MHz. At redshifts between
$z = 0.4$
(look-back times of 4 – 8 Gyr), the H i content of the Universe has been poorly explored due to the difficulty of carrying out radio surveys for faint 21-cm line emission and, at ultra-violet wavelengths, space-borne searches for Damped Lyman-
absorption in quasar spectra. The ASKAP wide field of view and large spectral bandwidth, in combination with a radio-quiet site, will enable a search for absorption lines in the radio spectra of bright continuum sources over 80% of the sky. This survey is expected to detect at least several hundred intervening 21-cm absorbers and will produce an H i-absorption-selected catalogue of galaxies rich in cool, star-forming gas, some of which may be concealed from optical surveys. Likewise, at least several hundred associated 21-cm absorbers are expected to be detected within the host galaxies of radio sources at
$0.4 < z < 1.0$
, providing valuable kinematical information for models of gas accretion and jet-driven feedback in radio-loud active galactic nuclei. FLASH will also detect OH 18-cm absorbers in diffuse molecular gas, megamaser OH emission, radio recombination lines, and stacked H i emission.
This study aimed to investigate the effectiveness of mindfulness-based cognitive therapy (MBCT) as a complementary approach in patients with bulimia nervosa (BN) or binge eating disorder (BED), and to assess how the reduction of the cognitive load of words related to eating disorders (ED) could constitute an intermediate factor explaining its global efficacy.
Eighty-eight women and men participated in clinical assessments upon inscription, prior to and following 8-week group MBCT. Mindfulness skills were assessed using the five facet mindfulness questionnaire; eating behaviors were assessed using the Three Factor Eating Questionnaire (TFEQ); comorbid pathologies were assessed using the beck depression index and the state-trait anxiety inventory. The cognitive load of words associated with ED was assessed through a modified version of the Stroop color naming task.
Mindfulness skills improved significantly (p < .05) after group MBCT. The improvement of TFEQ scores was accompanied by reduced levels of depressive mood and trait anxiety. The positive impact of MBCT on TFEQ score was directly related to an improvement of the performance in the Stroop task.
MBCT represents an interesting complementary therapy for patients with either BN or BED, at least when cognitive and behavioral domains are concerned. Such efficacy seems to be mediated by the reduction of the cognitive load associated with ED stimuli, which offers a possible explanation of how MBCT could reduce binge-eating behaviors. Other studies are needed, in independent centers, to focus more directly on core symptoms and long-term outcome.
South African lovegrass (Eragrostis plana Nees) is the most important weed of native pastures in southern Brazil. Management options are limited under water-stress conditions, and glyphosate has been the main tool for control. This study compared four salts of glyphosate applied at three growth stages and determined the glyphosate tolerance level. In addition, the performance of ammonium sulfate (AMS) under two soil moisture conditions (50% and 100% of water-holding capacity) and the effect of AMS on absorption and translocation of radiolabeled [14C]glyphosate were evaluated. The potassium salt of glyphosate had the fastest activity across growth stages of E. plana, which is more vulnerable to glyphosate at the panicle initiation stage. Isopropylamine salt was the slowest-acting glyphosate formulation. Younger plants were typically more easily controlled than older plants at the full tillering stage. The addition of AMS increased the level of control of drought-stressed E. plana compared with glyphosate alone by increasing translocation out of the treated leaf and consequently increasing the concentration of glyphosate in the primary culm. These data can be used to plan an effective management program for E. plana that takes into account the developmental stage of desired pasture grass species.
This paper presents the design, manufacturing and experimental assessment of a morphing element consisting of a composite corrugated panel that hosts a diffused actuation system based on Shape Memory Alloy (SMA) actuators. The characterisation of the SMA actuators is reported and the system performance is predicted through an analytical model and finite element analyses. Two versions of the actuated system are proposed, with different methods for the physical integration of the SMA wires into the composite part. Manufacturing and testing of specimens with different wire densities are reported. Correlation with experiments validates the analytical and numerical approaches adopted for the design and analyses. The results confirm the potential of the concept proposed for developing corrugated panels that can be contracted in a predefined direction by a load-bearing actuation system, but still retain high stiffness and strength properties in other directions.
The co-occurrence of the 2020 Atlantic hurricane season and the ongoing coronavirus disease 2019 (COVID-19) pandemic creates complex dilemmas for protecting populations from these intersecting threats. Climate change is likely contributing to stronger, wetter, slower-moving, and more dangerous hurricanes. Climate-driven hazards underscore the imperative for timely warning, evacuation, and sheltering of storm-threatened populations – proven life-saving protective measures that gather evacuees together inside durable, enclosed spaces when a hurricane approaches. Meanwhile, the rapid acquisition of scientific knowledge regarding how COVID-19 spreads has guided mass anti-contagion strategies, including lockdowns, sheltering at home, physical distancing, donning personal protective equipment, conscientious handwashing, and hygiene practices. These life-saving strategies, credited with preventing millions of COVID-19 cases, separate and move people apart. Enforcement coupled with fear of contracting COVID-19 have motivated high levels of adherence to these stringent regulations. How will populations react when warned to shelter from an oncoming Atlantic hurricane while COVID-19 is actively circulating in the community? Emergency managers, health care providers, and public health preparedness professionals must create viable solutions to confront these potential scenarios: elevated rates of hurricane-related injury and mortality among persons who refuse to evacuate due to fear of COVID-19, and the resurgence of COVID-19 cases among hurricane evacuees who shelter together.
Depuis 2008, une démarche de pleine conscience (MBCT) est proposée dans notre service (clinique des maladies mentales et de l’encéphale, centre hospitalier Sainte-Anne) à des patients souffrant de troubles bipolaires. Cette démarche en 8 séances a été adaptée spécifiquement à des patients bipolaires, en accord avec le Pr Segal (université de Toronto).
Cent sept patients ont participé, entre novembre 2008 et juin 2014, à ces groupes en huit semaines. Depuis presque trois ans est proposé un groupe de consolidation, ouvert, aux patients ayant suivi la démarche de pleine conscience en 8 séances. Ce groupe a lieu une fois par mois pendant deux heures et est animé par un instructeur de MBCT expérimenté, ayant une pratique régulière de la méditation. À ce jour cinquante patients (16 hommes et 34 femmes) sont inscrits à ce groupe : 36 personnes sont venues au moins une fois, les quatorze restants ne sont jamais venus, tout en demandant à rester inscrits sur la liste de convocation.
Nous ne constatons aucune différence significative entre le groupe contrôle et le groupe consolidation MBCT en termes de âge de début de troubles (25 ± 11 vs 27 ± 10), de nombre de TS, d’hospitalisations (2 ± 4 vs 2 ± 2), ou de nombre d’épisodes maniaques (6 ± 7 vs 7 ± 8) et dépressifs (12 ± 12 vs 13 ± 16).
Après avoir décrit les modalités de ce groupe, nous évaluerons le profil des patients qui y participent (âge moyen de 48 ans ± 10) au regard de la régularité et de l’assiduité en termes de participation et de présence. Nous présenterons l’évolution des compétences de pleine conscience acquises et développées en lien avec leur assiduité et à l’instauration de leur pratique de méditation à la fois formelle et informelle.
Dans les cas des troubles bipolaires, les taux de comorbidité avec un TDAH peut varier entre 9,5 % et 27 % . Ces patients présentent un début de trouble plus précoce, avec plus d’épisodes dépressifs et des épisodes mixtes. Il existe peu d’étude sur le lien entre ces deux pathologies et les différentes dimensions de personnalité selon le modèle de Big Five.
Notre étude comporte 106 patients souffrant de dépression, 102 patients bipolaires et 120 témoins, tous homogènes vis-à-vis de leurs caractéristiques démographiques. Le diagnostic de TDAH se basait sur les critères DSM-IV-TR. Les traits de TDAH étaient autoévalués avec la Wender Utah Rating Scale (WURS), la Adult ADHD Self-rating Scale (ASRS) et la Brown Attention Déficit Disorder Scale (ADD). L’Inventaire de Personnalité-Révisé, le NEO PI-R, servait également à évaluer les dimensions de la personnalité au sein des groupes cliniques.
15,7 % des adultes souffrant d’un trouble bipolaire et 7,5 % souffrant d’une dépression sévère manifestaient une comorbidité d’un TDAH en comparaison avec seulement 3,3 % des témoins. Il existe des corrélations significatives entre des traits de personnalité et la présence d’un TDAH. Une analyse de régression logistique de l’ensemble des 208 sujets cliniques a montré que ceux avec des faibles niveaux de névrosisme manifestaient un taux moins important de comorbidité avec un TDAH.
Notre étude souligne le lien entre des troubles de l’humeur, notamment les troubles bipolaires, et la présence d’un TDAH chez des adultes. Nos résultats soutiennent la nécessité d’évaluer les sujets souffrant des troubles d’humeur sur une éventuelle comorbidité de TDAH en milieu clinique. Il faudra étudier d’une façon plus approfondie ces traits de personnalité et les liens entre des troubles de l’humeur et un TDAH afin de pouvoir adapter la prise en charge.
Les approches centrées sur l’autorégulation ainsi que sur l’acceptation des émotions et des sensations désagréables inspirées des programme MBSR et MBCT, représentent une voie intéressante dans la prise en charge des troubles du comportement alimentaire dans lesquels le contrôle et l’évitement sont au premier plan. Ces programmes permettent de travailler les aspects obsessionnels (comme les ruminations) et compulsifs (sur l’alimentation, la réactivité avec perte de contrôle) associés à ces troubles alimentaires. La clinique des maladies mentales et de l’encéphale (CMME), hôpital Sainte-Anne a mis en place un protocole « MBCT Boulimie » en huit séances. Le programme MBCT a été modifié, notamment au niveau des outils cognitifs et de la durée des pratiques de méditation pour des patients présentant un TCA. La recherche s’est réalisée sur vingt-quatre sujets de l’hôpital de jour de la CMME et avait pour objet d’évaluer l’impact du programme MBCT dans une population de sujets souffrant de boulimie et de Binge Eating Disorder.
BMI, EDI-2, EAT, BDI-13, BITE, STAI Ya/Yb, le Ruminative Response Scale for Eating Disorder (RRSED), l’Acceptance and Action Questionnaire-II (AAQ-II), le Five Facets Mindfulness Questionnaire (FFMQ), le Mindfulness Attention Awareness Scale (MAAS), le Kentucky Inventory of Mindfulness Skills (KIMS), le Body Shape Questionnaire (BSQ), l’Impulsive Behavior Scale : Urgency, Premeditation, Perseverance, and Sensation Seeking (UPPS), le Cambridge Exeter Repetitive Thinking Scale (CERTS) et le Three Factor Eating Questionnaire (TFEQ). Nous présenterons les résultats préliminaires de cette recherche ainsi que le projet de suite de ce travail de recherche clinique.
A significant comorbidity between attention-deficit/hyperactivity disorder (ADHD) and affective disorders has been consistently reported in adults. Less data regarding the role of personality traits, and the influence of ADHD co-occurrence on clinical characteristics and outcome of mood disorders are currently available.
The sample consisted of 296 subjects, divided into three homogeneous groups according to demographic characteristics: 106 subjects diagnosed with major depressive disorder, 92 with bipolar disorders and 98 healthy controls. ADHD diagnosis was based on DSM-IV-TR criteria. Childhood and adult ADHD features were measured with the Wender Utah Rating Scale (WURS), the Adult ADHD Self-rating Scale (ASRS) and the Brown Attention Deficit Disorder Scale (ADD). The Hospital Anxiety and Depression Scale (HAD) and the Revised NEO Personality Inventory (NEO-PI-R) were also administered to the clinical groups, in order to investigate depressive/anxious symptoms and personality dimensions.
The prevalence of adult ADHD in subjects with bipolar disorders or major depressive disorder was 22.0% and 8.5% respectively (p < .001), compared to 3.1% in healthy controls. Significant associations between personality traits, depressive/anxious symptoms and ADHD features were found.
The present study emphasises the close relationship between affective disorders, especially bipolar disorders, and ADHD in adults. Our findings support the need to assess subjects with mood disorders in the clinical setting for possible co-existing ADHD and to further investigate personality traits to better understand the etiology of affective disorders and ADHD co-occurrence.
Recent studies have reported therapeutic benefit from the use of omega-3 fatty acids (EPA and DHA) as adjunctive treatment of depression.
The goal of this work is to assess the effectiveness and tolerability of dietary supplementation with omega-3 in the treatment of depressed patients.
Prospective, descriptive, observational study in a general psychiatry outpatient clinic. Consecutive inclusion of depressed patients started on dietary supplementation with omega-3 because of partial response to antidepressants and/or intolerance to high doses or combination of antidepressant drugs between January and May 2015. Sociodemographic variables, clinical data and information about tolerability were recorded. Clinical response to treatment over time was assessed at 4–6 months follow up using the 5-item CGI (Clinical Global Impression) scale.
We included 30 depressed patients started on omega-3. None of them reported side effects. Seventy-three percent of patients reported clinical improvement (40% much improvement, 33% some improvement). None of them got worse. We did not find association between clinical response and age, sex, type of depression nor duration of illness.
Despite the limitations of this study, our work support previous positive results on the use of omega-3 fatty acids (EPA and DHA) as adjunctive treatment of depression. Giving the safety of its use, clinicians might recommend omega-3 as adjunctive treatment of depression in cases with a partial response to antidepressants.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
The aim is to describe the experience of treatment with Paliperidone Palmitate long acting injection (PP) in patients with psychotic active clinic, whether diagnoses with schizophrenia or in patients with the first episode psychosis, as well as to reflect the improvement in the control of the symptoms that the patients can improve increasing the dose.
We have done a descriptive study of 34 patients hospitalized in psychiatry between January and July 2015 for psychotic active clinic who started treatment with PP or the previous dose was increased.
91.2% of patients admitted for acute exacerbation of their usual pathology and 8.8% for a first episode psychosis. In the CGI scale, all the patients admitted scored as severe or markedly ill; going mostly mildly ill at discharge. For 55.9% of patients, the treatment was changed to PP, 29.4% of the dose was increased PP and 14.7% antipsychotic treatment was started with PP. Among patients change treatment, the main reason was non-adherence (47.4%). 70.6% of our patients were discharged with PP as only antipsychotic and 29.4% which was discharged with another antipsychotic, the most frequent association was of PP with Quetiapine (80%).
PP is a highly effective medicament in the treatment of the schizophrenia that improves the adherence to the treatment, so in our experience and we consider it a medicament to be considered in the early stages of the disease. According to our experience and there are patients who can benefit from better control of symptoms adjusting the dose individually.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
A cross-sectional survey was carried out to estimate the seroprevalence of Coxiella burnetii in extensively grazed cattle and sheep from central Italy and to identify the related risk factors. Data on notified human Q fever cases in the area were also collected and described. A two-stage cluster sampling was performed. A total of 5083 animals (2210 cattle; 2873 sheep) belonging to 186 farms (92 herds; 94 flocks) were tested for the presence of antibodies against C. burnetii using a commercial enzyme-linked immunosorbent assay kit. The prevalence at the animal-level resulted three times higher in sheep compared to cattle (37.8% vs. 12.0%; χ2 = 270.10, P < 0.001). The prevalence at the herd-level was also higher in sheep than in cattle (87.2% vs. 68.5%; χ2 = 9.52, P < 0.01). The multivariate analysis showed a higher risk of seropositivity for cattle aged 67–107 months (OR 2.79, 95% CI 1.86–4.18), cattle >107 months of age (OR 2.07, 95% CI 1.36–3.14) and mixed breed cattle (OR 1.74, 95% CI 1.11–2.72). A herd size >92 animals was recognized as herd-level risk factor in cattle (OR 6.88, 95% CI 1.67–28.37). The risk of being seropositive was double in sheep belonging to flocks >600 animals (odds ratio (OR) 2.04, 95% CI 1.63–2.56). Sheep were confirmed to be the most exposed species. Nevertheless, the prevalence observed in cattle also suggests the potential involvement of this species in the circulation of the pathogen in the area. Seven confirmed human Q fever cases were reported. In five out of seven cases there was at least one exposed herd within a 5 km buffer. Even though the source of the infection was not identified, the possibility of C. burnetii circulating in the livestock and human population in the study area cannot be overlooked. The integration between veterinary and human surveillance will be crucial to understand the spread of this zoonosis and to support the adoption of appropriate control measures.
One of the great challenges in the use of nanomaterials is their production at low costs and high yields. In this work aluminum nanoparticles, from aluminum powder, were produced by wet mechanical milling through a combination of different attrition milling conditions such as ball-powder ratio (BPR) and the amount of solvent used. It was observed that at 600 rpm with a BPR of 500/30 g for 12 h, it was possible to produce nanoparticles with a size close to 20 nm, while at 750 rpm with a BPR of 380/12.6 g for 12 h, nanoparticles of approximately 10 nm were obtained. Scanning and transmission electron microscopy confirmed that the milling product is an agglomeration of nanoparticles with different sizes. These results show the feasibility of obtaining aluminum nanoparticles by mechanical milling using only ethanol as solvent, avoiding hazardous by-products obtained from chemical routes, and the use of complicated methods such as laser ablation and arc discharge.
In 2013, the national surveillance case definition for West Nile virus (WNV) disease was revised to remove fever as a criterion for neuroinvasive disease and require at most subjective fever for non-neuroinvasive disease. The aims of this project were to determine how often afebrile WNV disease occurs and assess differences among patients with and without fever. We included cases with laboratory evidence of WNV disease reported from four states in 2014. We compared demographics, clinical symptoms and laboratory evidence for patients with and without fever and stratified the analysis by neuroinvasive and non-neuroinvasive presentations. Among 956 included patients, 39 (4%) had no fever; this proportion was similar among patients with and without neuroinvasive disease symptoms. For neuroinvasive and non-neuroinvasive patients, there were no differences in age, sex, or laboratory evidence between febrile and afebrile patients, but hospitalisations were more common among patients with fever (P < 0.01). The only significant difference in symptoms was for ataxia, which was more common in neuroinvasive patients without fever (P = 0.04). Only 5% of non-neuroinvasive patients did not meet the WNV case definition due to lack of fever. The evidence presented here supports the changes made to the national case definition in 2013.
The aim of this study was to compare the effect of Hurricane Maria on internalizing and posttraumatic stress disorders (PTSD) among Puerto Ricans who moved to Florida after the storm versus those who stayed on the island.
In March through April 2018 (6 months after Hurricane Maria), an online survey was used to assess the effects of the storm on mental health. A sample of 213 displaced Puerto Ricans living in urban and rural/suburban areas in Florida, as well as urban and rural areas of Puerto Rico, participated in the study.
Rates of PTSD were high in both sites (Florida, 65.7%; Puerto Rico, 43.6%); however, participants in Florida were far more likely than those in Puerto Rico to meet diagnostic criteria for PTSD (OR, 2.94; 95% CI, 1.67-5.26). Among participants in both Florida and Puerto Rico, those living in urban areas were more likely than those in rural/suburban areas to meet criteria for PTSD and generalized anxiety disorder.
Results suggest that post-Hurricane Maria adjustment and adaptation may have been more psychologically taxing for Puerto Ricans who moved to Florida than it was for those who remained on the island, and more difficult for those in urban areas than it was for those in suburban or rural areas. (Disaster Med Public Health Preparedness. 2019;13:24–27)
The SPICA mid- and far-infrared telescope will address fundamental issues in our understanding of star formation and ISM physics in galaxies. A particular hallmark of SPICA is the outstanding sensitivity enabled by the cold telescope, optimised detectors, and wide instantaneous bandwidth throughout the mid- and far-infrared. The spectroscopic, imaging, and polarimetric observations that SPICA will be able to collect will help in clarifying the complex physical mechanisms which underlie the baryon cycle of galaxies. In particular, (i) the access to a large suite of atomic and ionic fine-structure lines for large samples of galaxies will shed light on the origin of the observed spread in star-formation rates within and between galaxies, (ii) observations of HD rotational lines (out to ~10 Mpc) and fine structure lines such as [C ii] 158 μm (out to ~100 Mpc) will clarify the main reservoirs of interstellar matter in galaxies, including phases where CO does not emit, (iii) far-infrared spectroscopy of dust and ice features will address uncertainties in the mass and composition of dust in galaxies, and the contributions of supernovae to the interstellar dust budget will be quantified by photometry and monitoring of supernova remnants in nearby galaxies, (iv) observations of far-infrared cooling lines such as [O i] 63 μm from star-forming molecular clouds in our Galaxy will evaluate the importance of shocks to dissipate turbulent energy. The paper concludes with requirements for the telescope and instruments, and recommendations for the observing strategy.
IR spectroscopy in the range 12–230 μm with the SPace IR telescope for Cosmology and Astrophysics (SPICA) will reveal the physical processes governing the formation and evolution of galaxies and black holes through cosmic time, bridging the gap between the James Webb Space Telescope and the upcoming Extremely Large Telescopes at shorter wavelengths and the Atacama Large Millimeter Array at longer wavelengths. The SPICA, with its 2.5-m telescope actively cooled to below 8 K, will obtain the first spectroscopic determination, in the mid-IR rest-frame, of both the star-formation rate and black hole accretion rate histories of galaxies, reaching lookback times of 12 Gyr, for large statistically significant samples. Densities, temperatures, radiation fields, and gas-phase metallicities will be measured in dust-obscured galaxies and active galactic nuclei, sampling a large range in mass and luminosity, from faint local dwarf galaxies to luminous quasars in the distant Universe. Active galactic nuclei and starburst feedback and feeding mechanisms in distant galaxies will be uncovered through detailed measurements of molecular and atomic line profiles. The SPICA’s large-area deep spectrophotometric surveys will provide mid-IR spectra and continuum fluxes for unbiased samples of tens of thousands of galaxies, out to redshifts of z ~ 6.
The physical processes driving the chemical evolution of galaxies in the last ~ 11Gyr cannot be understood without directly probing the dust-obscured phase of star-forming galaxies and active galactic nuclei. This phase, hidden to optical tracers, represents the bulk of the star formation and black hole accretion activity in galaxies at 1 < z < 3. Spectroscopic observations with a cryogenic infrared observatory like SPICA, will be sensitive enough to peer through the dust-obscured regions of galaxies and access the rest-frame mid- to far-infrared range in galaxies at high-z. This wavelength range contains a unique suite of spectral lines and dust features that serve as proxies for the abundances of heavy elements and the dust composition, providing tracers with a feeble response to both extinction and temperature. In this work, we investigate how SPICA observations could be exploited to understand key aspects in the chemical evolution of galaxies: the assembly of nearby galaxies based on the spatial distribution of heavy element abundances, the global content of metals in galaxies reaching the knee of the luminosity function up to z ~ 3, and the dust composition of galaxies at high-z. Possible synergies with facilities available in the late 2020s are also discussed.