@article{BrendtkeWiehlGroeberetal.2016,
  author    = {Brendtke, Rico and Wiehl, Michael and Groeber, Florian and Schwarz, Thomas and Walles, Heike and Hansmann, Jan},
  title     = {Feasibility Study on a Microwave-Based Sensor for Measuring Hydration Level Using Human Skin Models},
  series = {PLoS ONE},
  volume    = {11},
  journal   = {PLoS ONE},
  number    = {4},
  doi       = {10.1371/journal.pone.0153145},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-179934},
  year      = {2016},
  abstract  = {Tissue dehydration results in three major types of exsiccosis—hyper-, hypo-, or isonatraemia. All three types entail alterations of salt concentrations leading to impaired biochemical processes, and can finally cause severe morbidity. The aim of our study was to demonstrate the feasibility of a microwave-based sensor technology for the non-invasive measurement of the hydration status. Electromagnetic waves at high frequencies interact with molecules, especially water. Hence, if a sample contains free water molecules, this can be detected in a reflected microwave signal. To develop the sensor system, human three-dimensional skin equivalents were instituted as a standardized test platform mimicking reproducible exsiccosis scenarios. Therefore, skin equivalents with a specific hydration and density of matrix components were generated and microwave measurements were performed. Hydration-specific spectra allowed deriving the hydration state of the skin models. A further advantage of the skin equivalents was the characterization of the impact of distinct skin components on the measured signals to investigate mechanisms of signal generation. The results demonstrate the feasibility of a non-invasive microwave-based hydration sensor technology. The sensor bears potential to be integrated in a wearable medical device for personal health monitoring.},
  language  = {en}
}
@article{JockelSchneiderHarksHaubitzetal.2014,
  author    = {Jockel-Schneider, Yvonne and Harks, Inga and Haubitz, Imme and Fickl, Stefan and Eigenthaler, Martin and Schlagenhauf, Ulrich and Baulmann, Johannes},
  title     = {Arterial Stiffness and Pulse Wave Reflection Are Increased in Patients Suffering from Severe Periodontitis},
  series = {PLOS ONE},
  volume    = {9},
  journal   = {PLOS ONE},
  number    = {8},
  issn      = {1932-6203},
  doi       = {10.1371/journalone.0103449},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-119459},
  pages     = {e103449},
  year      = {2014},
  abstract  = {Aim: This single blind cross-sectional study compared the vascular health of subjects suffering from severe chronic periodontitis, severe aggressive periodontitis and periodontal healthy controls by evaluating pulse wave velocity (PWV), augmentation index (AIx) and pulse pressure amplification (PPA). Material and Methods: In a total of 158 subjects, 92 suffering from severe periodontitis and 66 matched periodontal healthy controls, PWV, AIx, central and peripheral blood pressure were recorded using an oscillometric device (Arteriograph). Results: Subjects suffering from severe chronic or aggressive periodontitis exhibited significantly higher PWV (p = 0.00004), higher AIx (p = 0.0049) and lower PPA (p = 0.028) than matched periodontal healthy controls. Conclusions: The results of this study confirm the association between periodontal inflammation and increased cardiovascular risk shown by impaired vascular health in case of severe periodontitis. As impaired vascular health is a common finding in patients suffering from severe periodontal disease a concomitant routine cardiovascular evaluation may be advised.},
  language  = {en}
}
@article{Karagiannakis2010,
  author    = {Karagiannakis, Evangelia},
  title     = {Autonomes Lernen durch Beobachtung, Reflexion und Evaluation des eigenen Lernprozesses - Punktuelle und kontinuierliche Verfahren},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-49879},
  year      = {2010},
  abstract  = {"Autonomes Lernen ist das {\"U}bernehmen von Verantwortung f{\"u}r das eigene Lernen." (Rieder, o. J.) Bedeutend f{\"u}r den Lernprozess ist weiterhin die F{\"a}higkeit, diesen selbst zu organisieren. Damit Eigenverantwortung und Selbstorganisation gelingen k{\"o}nnen, m{\"u}ssen Lernende ihren Lernprozess regelm{\"a}ßig reflektieren sowie Ergebnisse selbstst{\"a}ndig evaluieren und bewerten. (vgl. Wolff, 1997:3) Von Zeit zu Zeit sollte die gesamte Lerngruppe am Reflexions- und Evaluationsprozess beteiligt werden. Im vorliegenden Beitrag werden Methoden vorgestellt, mit denen teils in Einzelarbeit, teils in der Gruppe schnelle Zwischenevaluationen oder kontinuierlich begleitende Reflexionen realisiert werden k{\"o}nnen.},
  subject      = {Fremdsprachenlernen},
  language  = {de}
}