A Surfactant Concentration Model for the Systematic Determination of the Critical Micellar Concentration and the Transition Width

The critical micellar concentration (cmc) is a fundamental property of surfactant solutions. Many proposed methods for the definition and determination of the cmc from property-concentration plots yield values, which depend on the studied property, on the specific technique used for its analysis and in many cases on the subjective choice of the chosen type of plot and concentration interval. In this focus review, we revise the application of a surfactant concentration model we proposed earlier that defines the cmc directly based on the surfactant concentration. Known equations for the concentration-dependence of different surfactant properties can then be combined with this concentration model and fitted to experimental data. This modular concept makes it possible to determine the cmc and the transition width in a systematic and unambiguous way. We revise its use in the literature in different contexts: the determination of the cmc of surfactants and their mixtures from different properties (electrical conductivity, NMR chemical shift, self-diffusion, surface tension, UV-Vis absorption, fluorescence intensity and fluorescence correlation). We also revise the dependence of the width of the transition region on composition, detailed studies of the properties of fluorescent probes and the aggregation of non-surfactant systems, namely amyloid peptides.

Sistem Informasi Geografis (SIG) Pemetaan Lokasi Pertambangan Batu Bara Berbasis Quantum GIS (Studi Kasus: PT. Hasil Bumi Kalimantan)

During this time, the determination of the mine coordinates location done by the fieldman of PT. Kalimantan Earth Results was using a GPS locator. Found 27 points of coal mines and 18 coal ports spread across the southern Sumatra region. At present the process of recording and mapping locations is still done conventionally, causing frequent data loss, inaccuracies in the location of mining and information about mining results are less up-to-date. Systematic determination of location points is needed to make the companies and customers easier to see the coal mine profiles, coal quality, find out the location of each mine, and up-to-date mining results reports via webgis The prototype model was chosen as a method in system development. As well as UML (Unified Modeling Language), Quantum GIS (Qgis) and php will be used for the designers, builders of the webgis. This research is expected to produce a geographic information system (GIS) mapping of coal mining location points.

The Prevalence of Thyroid Autoimmunity in Children with Developmental Dyslexia

Background and Objectives. An association between developmental dyslexia and autoimmune disorders has been postulated. We aimed to evaluate the prevalence of thyroid autoimmunity in pediatric subjects with developmental dyslexia. Methods. We enrolled pediatric subjects with developmental dyslexia and, as a control group, healthy age- and sex-matched subjects without developmental dyslexia. Thyroid function was evaluated in subjects with developmental dyslexia measuring serum concentrations of thyroid-stimulating hormone (TSH), free triiodothyronine (fT3), and free thyroxine (fT4). Thyroid autoimmunity was evaluated in all subjects measuring antithyroid peroxidase (TPO-Ab) and antithyroglobulin (TG-Ab) antibodies. In subjects with developmental dyslexia, thyroid ultrasonography (US) was also performed. Results. We enrolled 51 subjects with developmental dyslexia ( M : F = 39 : 12 , mean age 12.4 ± 9 years) and 34 controls ( M : F = 24 : 10 , mean age 10.8 ± 4 years). TPO-Ab positivity was significantly higher in subjects with developmental dyslexia compared to controls (60.8% vs. 2.9%, p < 0.001 ), while no significant difference was found in TG-Ab positivity (16% vs. 5.8%). Thyroid US performed in 49 subjects with developmental dyslexia revealed a thyroiditis pattern in 60%. Conclusions. We found an extremely high prevalence of thyroid autoimmunity in children with developmental dyslexia. Further studies are needed to confirm our observations, but our findings may change the approach to this disorder and eventually lead to a systematic determination of thyroid autoimmunity in children with developmental dyslexia.

Developing EU environmental standards for the food, drink and milk industries: key environmental issues and data collection

Background The European Commission organised the review of the best available techniques reference document for the food, drink and milk industries according to the provisions of the Industrial Emissions Directive (Directive 2010/75/EU). Under this policy, an exchange of information between Member States, industrial organisations, non-governmental organisations promoting the protection of the environment and the European Commission took place. Results A crucial part of developing these EU environmental standards was the systematic determination of the key environmental issues of the food, drink and milk sector. Key environmental issues were defined for emissions to air and water, and for energy and water consumption. The key environmental issues were systematically determined using four criteria proposed by the European Commission. Moreover, a data collection procedure was designed and real-plant emissions and consumption data were obtained for the first time from a representative variety of food, drink and milk installations across the European Union. Conclusions The development of the EU environmental standards for the food, drink and milk sector are based on a systematic determination of the key environmental issues and on a representative data collection for this sector. This paper also highlights the main normative, organisational and procedural factors addressed during the environmental policy integration carried out to develop these standards.

Developing EU environmental standards for the food, drink and milk industries: key environmental issues and data collection

Background: The European Commission organised the review of the Best Available Techniques Reference Document for the Food, Drink and Milk Industries according to the provisions of the Industrial Emissions Directive (Directive 2010/75/EU). Under this policy, an exchange of information between Member States, industrial organisations, non-governmental organisations promoting the protection of the environment and the European Commission took place. Results: A crucial part of developing these EU environmental standards was the systematic determination of the key environmental issues of the food, drink and milk sector. Key environmental issues were defined for emissions to air and water, and for energy and water consumption. The key environmental issues were systematically determined using four criteria proposed by the European Commission. Moreover, a data collection procedure was designed and real-plant emissions and consumption data were obtained for the first time from a representative variety of food, drink and milk installations across the European Union. Conclusions: The development of the EU environmental standards for the food, drink and milk sector are based on a systematic determination of the key environmental issues and on a representative data collection for this sector. This paper also highlights the main normative, organisational and procedural factors addressed during the environmental policy integration carried out to develop these standards.

Developing EU environmental standards for the food, drink and milk industries: key environmental issues and data collection

Background The European Commission organised the review of the best available techniques reference document for the food, drink and milk industries according to the provisions of the Industrial Emissions Directive (Directive 2010/75/EU). Under this policy, an exchange of information between Member States, industrial organisations, non-governmental organisations promoting the protection of the environment and the European Commission took place. Results A crucial part for developing these EU environmental standards was a systematic determination of the key environmental issues of the food, drink and milk sector. Key environmental issues were defined for emissions to air and water, and for energy and water consumption. The key environmental issues were systematically determined by using four criteria proposed by the European Commission. Moreover, a data collection procedure was designed and real-plant emissions and consumption data were obtained for the first time from a representative variety of food, drink and milk installations across the European Union. Conclusions The development of the EU environmental standards for the food, drink and milk sector are based on a systematic determination of the key environmental issues and on a representative data collection for this sector. This paper also highlights the main normative, organisational and procedural factors addressed during the environmental policy integration carried out to develop these standards.