ABSTRACT
Mosquitoes (Diptera: Culicidae) use certain resting sites during their inactive phase. The microclimatic conditions of these resting sites might affect their physiology and vectorial capacity. In this study, we combined a field and a laboratory study to investigate the natural resting site and temperature preferences of mosquitoes. The field study was conducted at a forest close to Oldenburg (Lower Saxony, Germany) from May to October 2018. Mosquitoes were collected in five different natural habitats with seven replicates each. Temperature was recorded hourly at each site. Significantly more mosquitoes were collected in deadwood (predominantly Culiseta morsitans/fumipennis) and shaded herb layer (predominantly Aedes species) compared to unshaded herb layer or broadleaf and coniferous trees. GLMMs revealed resting site habitats as the best predictor to explain the observed preference patterns, but microclimatic conditions are also involved in mosquito resting site selection. Most mosquitoes were collected at resting sites with relatively colder and more stable temperatures. In concert, laboratory choice experiments with a thermal gradient ring demonstrated that Cs. morsitans/fumipennis avoid temperatures over 30 °C. Understanding the small-scaled resting site preferences and the related microclimatic conditions can improve mosquito collection techniques and refine the prediction of mosquito-borne pathogen transmission.
Subject(s)
Aedes , Culicidae , Animals , Ecosystem , Germany , Microclimate , TemperatureABSTRACT
BACKGROUND: Waiting times are an important barrier to timely obtaining appropriate mental health care in Flanders, but structural data is limited. AIM: To describe the waiting time problem in Flanders and propose some causal hypotheses and possible interventions. METHOD: An exploration of the available waiting time data, supplemented with literature and insights based on the results of some Flemish Centers for Mental Healthcare. RESULTS: Waiting times are especially problematic for subsidized outpatient care and care for children and youth, although the current data provide an incomplete picture. Besides capacity, important factors are the organization of the intake (e.g. assessment) and flow parameters (e.g. mean treatment duration - and intensity). CONCLUSION: Eliminating waiting lists is one of the greatest challenges for Flemish mental health care. There is a need to expand capacity as well as the smarter use of existing capacity and resources. A joint multi-level approach is required.
Subject(s)
Mental Health , Waiting Lists , Adolescent , Ambulatory Care , Child , HumansABSTRACT
Metastable states created by electron or hole capture in crystal defects are widely used in dosimetry and photonic applications. Feldspar, the most abundant mineral in the Earth's crust (> 50%), generates metastable states with lifetimes of millions of years upon exposure to ionizing radiation. Although feldspar is widely used in dosimetry and geochronometry, the creation of metastable states and charge transfer across them is poorly understood. Understanding such phenomena requires next-generation methods based on high-resolution, site-selective probing of the metastable states. Recent studies using site-selective techniques such as photoluminescence (PL), and radioluminescence (RL) at 7 K have revealed that feldspar exhibits two near-infrared (NIR) emission bands peaking at 880 nm and 955 nm, which are believed to arise from the principal electron-trapping states. Here, we map for the first time the electron-trapping states in potassium-rich feldspar using spectrally-resolved cathodoluminescence microscopy at a spatial resolution of ~ 6 to 22 µm. Each pixel probed by a scanning electron microscope provides us a cathodoluminescence spectrum (SEM-CL) in the range 600-1000 nm, and elemental data from energy-dispersive x-ray (EDX) spectroscopy. We conclude that the two NIR emissions are spatially variable and, therefore, originate from different sites. This conclusion contradicts the existing model that the two emissions arise from two different excited states of a principal trap. Moreover, we are able to link the individual NIR emission peaks with the geochemical variations (K, Na and Fe concentration), and propose a model that explains the quenching of the NIR emission by Fe4+. Our study contributes to an improved understanding of charge storage in feldspathic minerals, with implications for developing sub-single grain (micrometer scale) measurement techniques in radiation dosimetry.
ABSTRACT
This paper questions the extent to which developmental considerations have been incorporated into the theory and practice of cognitive behavioral therapy (CBT). It focuses on children aged between 5 and 8 years because Piagetian developmental theory places them at a prelogical cognitive level, and thus, the use of a therapeutic approach that is based on a rationalist paradigm would be considered inappropriate. The cognitive demands made upon 5- to 8-year-old children by CBT are outlined, and the current developmental literature is reviewed in the light of this to evaluate the cognitive abilities of this age group. The models underpinning CBT are examined for evidence of the influence of developmental psychology, and the outcome literature of CBT techniques is then scrutinized to evaluate the efficacy of these techniques with young children. Conclusions are reached regarding the appropriateness of current cognitive-behavioral approaches with young children, and the implications for alternative approaches are briefly considered.
Subject(s)
Child Development , Cognitive Behavioral Therapy/methods , Cognitive Behavioral Therapy/standards , Mental Disorders/therapy , Age Factors , Child , Child, Preschool , Humans , Problem Solving , Psychological Theory , Teaching/methodsABSTRACT
Between 1980 and 1989, 68 tetraplegic patients (69 males and 8 females) with cervical spine fractures were treated with corpectomy, iliac bone grafting and anterior plating. The average age was 27 years (15-58 years). The resected vertebrae was C4 in 4 cases, C5 in 24, C6 in 32 and C7 in 8. The injuries were classified according to Allen et al. in: compressive flexion in 47 cases, vertical compression in 20 and distractive flexion in 1. The neurologic deficit was complete in 30 patients and incomplete in 38 patients. The surgery was performed 7 days (average) (1-28 days) after the trauma. The mean follow-up was 2.8 years (1-9 years). In the postoperative period early mobilization was permitted with a plastic collar. There were 6 deaths that were not related to the technique in the first 4 weeks; the results of the remaining 62 patients are presented hereafter. In the final follow-up we observed that 56 patients had no complications related to the procedure and the spine was stabilized. The following complications were observed in the remaining patients: 5 partial loosening of the plate, but the patients were asymptomatic and 1 complete loosening that was reoperated after 2 weeks. The motor indices improved from 12.4 points initially to 23.7 in the complete tetraplegics and from 30.2 points to 72.5 in the incomplete tetraplegics. We conclude that the anterior plate fixation after anterior decompression for cervical spine fractures avoids the extrusion of the graft and provides immediate stabilization of the spine, permitting early mobilization of the patients.