39 research outputs found

    Reduction of Fusarium wilt in watermelon by Pseudomonas chlororaphis PCL1391 and P. fluorescens WCS365

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    Fusarium wilt of watermelon (Citrullus lanatus) caused by Fusarium oxysporum f. sp. niveum is a devastatine soil-borne disease that causes extensive losses throughout the world. Two known Pseudomonas biocontrol strains were used separately and in combination to assess their antagonistic effectiveness against F. oxysporum f. sp. niveum in pot experiments. P. chlororaphis PCL1391 signifi cantly reduced disease severity. P. fl uorescens WCS365 was less effective in disease suppression, while a combination of the two bacteria had intermediate effects. The biological control of Fusarium wilt with P. chlororaphis offers a potentially useful tool in an integrated pest management program to control Fusarium wilt of watermelon

    Evaluating the Pedagogical Effectiveness of Study Preregistration in the Undergraduate Dissertation

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    Research shows that questionable research practices (QRPs) are present in undergraduate final-year dissertation projects. One entry-level Open Science practice proposed to mitigate QRPs is “study preregistration,” through which researchers outline their research questions, design, method, and analysis plans before data collection and/or analysis. In this study, we aimed to empirically test the effectiveness of preregistration as a pedagogic tool in undergraduate dissertations using a quasi-experimental design. A total of 89 UK psychology students were recruited, including students who preregistered their empirical quantitative dissertation ( n = 52; experimental group) and students who did not ( n = 37; control group). Attitudes toward statistics, acceptance of QRPs, and perceived understanding of Open Science were measured both before and after dissertation completion. Exploratory measures included capability, opportunity, and motivation to engage with preregistration, measured at Time 1 only. This study was conducted as a Registered Report; Stage 1 protocol: https://osf.io/9hjbw (date of in-principle acceptance: September 21, 2021). Study preregistration did not significantly affect attitudes toward statistics or acceptance of QRPs. However, students who preregistered reported greater perceived understanding of Open Science concepts from Time 1 to Time 2 compared with students who did not preregister. Exploratory analyses indicated that students who preregistered reported significantly greater capability, opportunity, and motivation to preregister. Qualitative responses revealed that preregistration was perceived to improve clarity and organization of the dissertation, prevent QRPs, and promote rigor. Disadvantages and barriers included time, perceived rigidity, and need for training. These results contribute to discussions surrounding embedding Open Science principles into research training

    Semi-automatic sea lane extraction combining Particle Filtering (PF) and Geographic Information Systems (GIS)

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    This paper addresses the problem of extracting traffic patterns from noisy and incomplete sensor data. We introduce an approach that combines the output of (particle filter based) tracking filters with GIS techniques. While tracking filters are standard tools for generating estimates of the position and velocities of individual objects over time, GIS techniques are used to extract geographic patterns from these estimates. GIS techniques also allow the integration of prior knowledge, such as coastlines and bathymetry, to enhance the quality of the extracted patterns. The approach has been applied to maritime traffic surveillance using report of the Automatic Identification System (AIS), which may be subject to GPS errors, spoofing, time delays and periods of missed detections. The results are continuous vessel tracks indicating each vessel's route, even when the update rate of messages is significantly slower

    Occurrence of barley yellow mosaic and barley mild mosaic bymoviruses in Greece

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    The effect of preharvest calcium sprays on quality attributes, physicochemical aspects of cell wall components and susceptibility to brown rot of peach fruits (Prunus persica L. cv. Andross)

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    This study was planned to evaluate the effect of preharvest calcium sprays on physicochemical aspects of cell wall components, activity patterns of pectin-modifying enzymes and susceptibility to brown rot (Monilinia fructicola) of peach fruits (Prunus persica L. cv. 'Andross'). Six or 10 preharvest calcium sprays were applied with two different formulas (calcium chloride and an ethylenediamine tetraacetic acid (EDTA) chelated calcium form) in equimolar calcium concentration (0.12% Ca, w/v). After harvest, peach fruits were cold stored (0 degrees C, 95% R.H.) up to 4 weeks. Calcium content increased significantly in the calcium-sprayed peaches both in the peel (25-42%) and in the flesh (11-17%), 1 d after harvest. Calcium chloride sprays were more effective than those of chelated calcium, whereas the increase of calcium content in the fruits seems to be unaffected by the 6 or 10 calcium sprays. The increase of cell wall calcium corresponded to increase of calcium in the insoluble pectin fraction, whereas no differences were detected in the calcium of water-soluble pectin fraction. Ethylene production, respiration rate, uronic acid content and activity of pectin-modifying enzymes did not indicate substantial differentiations by preharvest calcium sprays as ripening progressed after harvest or cold storage. Calcium sprays resulted in significant decrease of brown rot development, although no effect on disease incidence was recorded. (c) 2005 Elsevier B.V. All rights reserved

    Assessment of psychological distress in end stage renal disease: is it spirituality related?

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    Introduction. Patients undergoing hemodialysis (HD) are faced with bearing this burden and report poor mental health. Spirituality can be a key factor in managing these problems among HD patients. Aim. This cross-sectional study aimed at exploring possible factors that are associated with psychological distress among HD patients and testing its relation to spirituality. Methods. HD patients were recruited from six dialysis units in Greece. Psychological distress was assessed using the scale Symptom Check List 90-R and spirituality using the Facit Sp-12 questionnaire. In addition, a special design questionnaire regarding demographic, social, and clinical characteristic was administrated. Results. According to the results, factors such age, gender, marital status and area of residence are associated with psychological distress, while dimensions of spirituality such Meaning in Life and Peace can have a positive influence on psychological distress. Conclusion. This study highlights the vital role of spirituality, which can act as a mechanism for managing stressful situations. In particular, this study highlights the positive effect of the meaning and purpose of life, as well as the role of peace and harmony. © 202

    Assessment of the relation between religiosity, anxiety, depression and psychological resilience in nursing staff

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    The nursing profession is considered to be an emotionally demanding profession often lead to various psychological difficulties and extend level stress. Religiosity and religion in general, have been associated with positive outcomes in an individual's life such as higher self-esteem, better quality of life and psychological wellbeing. The purpose of this study was to examine the relation between nurses' religiosity, psychological resilience, and psychological wellbeing. In this cross-sectional study, 378 nurses participated. Dada were collected by using Centrality of Religiosity Scale, The Patient Health Questionnaire Two-Item Depression Scale, The Generalized Anxiety Disorder Questionnaire, Connor-Davidson Resilience Scale 25. Percentages, means, and standard deviations were calculated. In addition the parametric t-test and ANOVA were used. Also, logistic regression analyses were used to determine which factors affect the depression and anxiety of nurses. Results indicated differences with a probability of less than or equal to 0.05 were accepted as significant. For statistical analysis, we used the statistical program SPSS 25. According to our results although religious practices can be a protective factor for both depression and anxiety, religious beliefs and experiences can increase the levels of depression and anxiety as well. © Copyright the Author(s), 202
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