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Fluorescent indicators based on BODIPY
2012
Boens, Noël | Leen, Volker | Dehaen, W. (Wim)
This critical review covers the advances made using the 4-bora-3a,4a-diaza-s-indacene (BODIPY) scaffold as a fluorophore in the design, synthesis and application of fluorescent indicators for pH, metal ions, anions, biomolecules, reactive oxygen species, reactive nitrogen species, redox potential, chemical reactions and various physical phenomena. The sections of the review describing the criteria for rational design of fluorescent indicators and the mathematical expressions for analyzing spectrophotometric and fluorometric titrations are applicable to all fluorescent probes (206 references).
Afficher plus [+] Moins [-]Scientific Opinion on the use of animal-based measures to assess welfare of broilers
2012
EFSA Panel on Animal Health and Welfare
<p>Animal-based measures (ABM) can be used effectively in the on-farm evaluation of broiler welfare in relation to laws, codes of practice, quality assurance schemes, management and also partly for ante-mortem inspection. Some ABM can also be taken post-mortem at the slaughterhouse. Non-animal-based measures can be used when the association between them and the welfare outcome is strong and when they are more efficient than ABM as a means to safeguard welfare. They can also be useful predictors of welfare in broilers. The choice of animal-based measures will depend upon the specific objectives of the assessment. The full list is comparable to a ‘toolbox’, from which the appropriate set of measures can be selected. The Welfare Quality<sup>®</sup> protocol provides information on the majority of the welfare outcomes for the main factors identified in the EFSA Scientific Opinions but not those where time limitation prevents it. There is a lack of research on the use of ABM on-farm and in the slaughterhouse to assess pain, frustration, boredom and other negative or positive emotional states in the standard broiler. There are limited management options to prevent poor welfare when the flock is still in the house e.g. to improve the ventilation system. The same applies to negative consequences arising from genetic selection. There is a need for more systematic flock monitoring and surveillance programmes in the broiler industry. Visual inspection has a very high potential to improve animal welfare in broiler production when a range of appropriate ABM is used in the slaughterhouse. Benchmarking can be used to document welfare changes over time, including automatic monitoring and assessment systems. Attention should also be paid to initial and ongoing training of assessors in the field and in the abattoir to ensure valid and robust measurements.</p>
Afficher plus [+] Moins [-]Scientific Opinion on the use of animal-based measures to assess welfare of broilers
2012
<p>Animal-based measures (ABM) can be used effectively in the on-farm evaluation of broiler welfare in relation to laws, codes of practice, quality assurance schemes, management and also partly for ante-mortem inspection. Some ABM can also be taken post-mortem at the slaughterhouse. Non-animal-based measures can be used when the association between them and the welfare outcome is strong and when they are more efficient than ABM as a means to safeguard welfare. They can also be useful predictors of welfare in broilers. The choice of animal-based measures will depend upon the specific objectives of the assessment. The full list is comparable to a ‘toolbox’, from which the appropriate set of measures can be selected. The Welfare Quality<sup>®</sup> protocol provides information on the majority of the welfare outcomes for the main factors identified in the EFSA Scientific Opinions but not those where time limitation prevents it. There is a lack of research on the use of ABM on-farm and in the slaughterhouse to assess pain, frustration, boredom and other negative or positive emotional states in the standard broiler. There are limited management options to prevent poor welfare when the flock is still in the house e.g. to improve the ventilation system. The same applies to negative consequences arising from genetic selection. There is a need for more systematic flock monitoring and surveillance programmes in the broiler industry. Visual inspection has a very high potential to improve animal welfare in broiler production when a range of appropriate ABM is used in the slaughterhouse. Benchmarking can be used to document welfare changes over time, including automatic monitoring and assessment systems. Attention should also be paid to initial and ongoing training of assessors in the field and in the abattoir to ensure valid and robust measurements.</p>
Afficher plus [+] Moins [-]A novel dual colorimetric fiber based on two acid–base indicators
2012
Li, Guowei | Xiao, Jia | Zhang, Wenqin
A novel dual colorimetric fiber based on two acid–base indicators was synthesized by first aminating commercially available polyacrylonitrile fiber with tetraethylenepentamine and then covalently immobilizing ethyl orange moieties through an alkylation reaction and a diazo coupling reaction; finally, the fiber was grafted with phenolphthalein using a Mannich reaction. The functionalized fiber was characterized by elemental analysis, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier-transfer infrared spectroscopy (FTIR) and UV–vis spectroscopy, and its color-changing properties, response speed, reusability and photostability were all investigated. This fiber exhibits a remarkable color change from deep pink (pH<1.1) to yellow (1.1<pH<13.0) and then to dark violet (pH>13.0). Moreover, this fiber shows a fast response time (<1s for 1M HCl and 1M NaOH), high photostability (>60 days) and excellent reusability (>300 times).
Afficher plus [+] Moins [-]Physico-chemical indicators and identification of selected Slovak honeys based on colour measurement
2012
Kasperova, J., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic) | Nagy, J., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic) | Popelka, P., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic) | Dicakova, Z., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic) | Nagyova, A., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic) | Mala, P., Univerzita Veterinarskeho Lekarstva a Farmacie, Kosice (Slovak Republic)
The aim of this study was to characterize 52 samples of Slovak honeys of six types (multifloral, acacia, rape, honeydew, forest and mixed). Physico-chemical analysis of honey included the water content, free acidity, pH, water activity, electrical conductivity, and hydroxymethylfurfural (HMF) content. In addition, the colour of honeys was measured using spectrophotometer and the method of the Commission Internationale de l'Eclairage (CIE L*a*b*); four types of honey were used for identification: multifloral, acacia, rape, and honeydew. The mean values of physico-chemical indicators were as follows: water content: 16-21%, acidity: 6-42 mekv/kg, pH: 3.68-5.15, water activity: 0.505-0.667, electrical conductivity: 0.155-1.585 mS/cm and HMF concentration: 0.17-78.5 mg/kg. The highest HMF concentration was found in forest honey with one sample above the limit established by the Council Directive 2001/110/EC. The colour of Slovak honeys analysed in this study was very variable and ranged from pale yellow to dark brown. The differences in physico-chemical indicators and colour of honey samples were found to be significant. The CIE L*a*b* method can be used to identify different honey samples.
Afficher plus [+] Moins [-]Evaluation of sustainable development strategies and policies : The need for more timely indicators
2012
Lyytimäki, Jari
Indicators are commonly used as tools to identify and highlight socio-economic and ecological trends and to assess progress towards sustainability. Different quality criteria can be considered for indicators. This paper focuses on the timeliness of indicators used in the evaluation of sustainable development strategies. The analysis is based on indicators included in four assessment reports of the sustainable development strategy of the European Union and three assessment reports of the national strategy of Finland. Furthermore, a web-based national level indicator portal is analysed. The results show that the timeliness of indicators has generally not improved during the past decade and that indicators used in strategy evaluations have a time lag of approximately two years. It is suggested that more attention should be given to efforts to improve the timeliness of indicators in order to increase the effectiveness of the evaluations. More generally, it is suggested that greater emphasis should be put on the empirical research on actual use of indicators.
Afficher plus [+] Moins [-]Principal component analysis of tomato genotypes based on some morphological and biochemical quality indicators
2012
Glogovac Svetlana | Takač Adam | Tepić Aleksandra | Šumić Zdravko | Gvozdanović-Varga Jelica | Červenski Janko | Vasić Mirjana | Popović Vukašin
This study investigates variability of tomato genotypes based on morphological and biochemical fruit traits. Experimental material is a part of tomato genetic collection from Institute of Filed and Vegetable Crops in Novi Sad, Serbia. Genotypes were analyzed for fruit mass, locule number, index of fruit shape, fruit colour, dry matter content, total sugars, total acidity, lycopene and vitamin C. Minimum, maximum and average values and main indicators of variability (CV and σ) were calculated. Principal component analysis was performed to determinate variability source structure. Four principal components, which contribute 93.75% of the total variability, were selected for analysis. The first principal component is defined by vitamin C, locule number and index of fruit shape. The second component is determined by dry matter content, and total acidity, the third by lycopene, fruit mass and fruit colour. Total sugars had the greatest part in the fourth component.
Afficher plus [+] Moins [-]Prioritizing Public- Private Partnership Models for Public Hospitals of Iran Based on Performance Indicators
2012
Mohammad Asghari Jaafarabadi | Ali Jannati | Hossein Jabbari Beyrami | Raana Gholamzadeh Nikjoo
Background: The present study was conducted to scrutinize Public- Private Partnership (PPP) models in public hospitals of different countries based on performance indicators in order to se-lect appropriated models for Iran hospitals.Methods: In this mixed (quantitative-qualitative) study, systematic review and expert panel hasbeen done to identify varied models of PPP as well as performance indicators. In the second stepwe prioritized performance indicator and PPP models based on selected performance indicatorsby Analytical Hierarchy process (AHP) technique. The data were analyzed by Excel 2007 andExpert Choice11 software’s.Results: In quality – effectiveness area, indicators like the rate of hospital infections(100%), hospital accidents prevalence rate (73%), pure rate of hospital mortality (63%), patientsatisfaction percentage (53%), in accessibility equity area indicators such as average inpatientwaiting time (100%) and average outpatient waiting time (74%), and in financial – efficiency area,indicators including average length of stay (100%), bed occupation ratio (99%), specific incometo total cost ratio (97%) have been chosen to be the most key performance indicators. In the prioritizationof the PPP models clinical outsourcing, management, privatization, BOO (build, own,operate) and non-clinical outsourcing models, achieved high priority for various performance indicatorareas.Conclusion: This study had been provided the most common PPP options in the field of public hospitals and had gathered suitable evidences from experts for choosing appropriate PPP option for public hospitals. Effect of private sector presence in public hospital performance, based on which PPP options undertaken, will be different.
Afficher plus [+] Moins [-]Principal component analysis of tomato genotypes based on some morphological and biochemical quality indicators
2012
Glogovac, Svetlana (Institute of Field and Vegetable Crops, Novi Sad (Serbia)) | Takač, Adam (Institute of Field and Vegetable Crops, Novi Sad (Serbia)) | Tepić, Aleksandra (Faculty of Technology, Novi Sad (Serbia)) | Šumić, Zdravko (Faculty of Technology, Novi Sad (Serbia)) | Gvozdanović-Varga, Jelica (Institute of Field and Vegetable Crops, Novi Sad (Serbia)) | Červenski, Janko (Institute of Field and Vegetable Crops, Novi Sad (Serbia)) | Vasić, Mirjana (Institute of Field and Vegetable Crops, Novi Sad (Serbia)) | Popović, Vukašin (Institute of Field and Vegetable Crops, Novi Sad (Serbia))
This study investigates variability of tomato genotypes based on morphological and biochemical fruit traits. Experimental material is a part of tomato genetic collection from Institute of Filed and Vegetable Crops in Novi Sad, Serbia. Genotypes were analyzed for fruit mass, locule number, index of fruit shape, fruit colour, dry matter content, total sugars, total acidity, lycopene and vitamin C. Minimum, maximum and average values and main indicators of variability (CV and σ) were calculated. Principal component analysis was performed to determinate variability source structure. Four principal components, which contribute 93.75% of the total variability, were selected for analysis. The first principal component is defined by vitamin C, locule number and index of fruit shape. The second component is determined by dry matter content, and total acidity, the third by lycopene, fruit mass and fruit colour. Total sugars had the greatest part in the fourth component
Afficher plus [+] Moins [-]Towards the implementation of an integrated ecosystem fleet-based management of European fisheries
2012
Gascuel, Didier | Merino, G. | Doering, R. | Druon, Jean-noel | Goti, L. | Guenette, S. | Macher, Claire | Soma, K. | Travers-trolet, Morgane | Mackinson, Steve
Using the Celtic Sea and the North Sea as case studies, the fleet-based approach is shown to be the pathway to implement an effective ecosystem approach to fisheries management (EAFM) in European seas. First, a diagnostic on the health of each ecosystem is proposed based on the reconstruction of long time-series of catch, the analysis of mean indicators or stocks trajectories derived from ICES stock assessment results, and the analysis of ecosystem indicators. Then, a fleet-based synthesis is presented using indicators of both the ecological impact and the economic performances of the major fleets operating within each ecosystem. In particular, assessment diagrams show whether each fleet segment, on average, sustainably exploits the stocks. Although results are preliminary due to the poor quality of available data, the analysis shows that simple indicators can be estimated and clearly highlight contrasts between fleet segments. Such an approach contributes to the evolution from a stock-based to a fleet-based management, which reflects the ecological, economical and social pillars of the sustainable development of fisheries.
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