Bridging the Analytical Gap Between Gas Treatment and Reactor Plants in Carbon2Chem_®

The use of purified process gases as feedstock for subsequent processes requires a detailed verification of the gas purity to ensure long lifetimes of applied catalysts. Herein, the analytical infrastructure for the measurements of the cleaned gases is presented. An overview of all sampling points for the off- and on-line analysis is given. The detailed decryption of the composition of the cleaned blast furnace gas, its main components as well as its traces are presented. Thereby, over 99 % of the overall signal strength of this complex gas matrix measured with a proton transfer reaction mass spectrometer with H3O+ as reagent ion could be revealed. Furthermore, by the example of the catalyst poison H2S, the necessity of monitoring continuously the gas matrix for certain compounds was proven

Association Between Proteomic Blood Biomarkers and DTI/NODDI Metrics in Adolescent Football Players: A Pilot Study

While neuroimaging and blood biomarker have been two of the most active areas of research in the neurotrauma community, these fields rarely intersect to delineate subconcussive brain injury. The aim of the study was to examine the association between diffusion MRI techniques [diffusion tensor imaging (DTI) and neurite orientation/dispersion density imaging (NODDI)] and brain-injury blood biomarker levels [tau, neurofilament-light (NfL), glial-fibrillary-acidic-protein (GFAP)] in high-school football players at their baseline, aiming to detect cumulative neuronal damage from prior seasons. Twenty-five football players were enrolled in the study. MRI measures and blood samples were obtained during preseason data collection. The whole-brain, tract-based spatial statistics was conducted for six diffusion metrics: fractional anisotropy (FA), mean diffusivity (MD), axial/radial diffusivity (AD, RD), neurite density index (NDI), and orientation dispersion index (ODI). Five players were ineligible for MRIs, and three serum samples were excluded due to hemolysis, resulting in 17 completed set of diffusion metrics and blood biomarker levels for association analysis. Our permutation-based regression model revealed that serum tau levels were significantly associated with MD and NDI in various axonal tracts; specifically, elevated serum tau levels correlated to elevated MD (p = 0.0044) and reduced NDI (p = 0.016) in the corpus callosum and surrounding white matter tracts (e.g., longitudinal fasciculus). Additionally, there was a negative association between NfL and ODI in the focal area of the longitudinal fasciculus. Our data suggest that high school football players may develop axonal microstructural abnormality in the corpus callosum and surrounding white matter tracts, such as longitudinal fasciculus. A future study is warranted to determine the longitudinal multimodal relationship in response to repetitive exposure to sports-related head impacts

Assessment of Patient Participation in Physical Rehabilitation Activities:An Integrative Review

PurposeIn addition to the amount and intensity of rehabilitation interventions and the number of therapies, the degree of patient participation in physical rehabilitation activities is key. For this reason, adequate information regarding participation is necessary to evaluate patient performance. This article reviews instruments designed to assess participation in physical rehabilitation activities. DesignIntegrative review. MethodsPubmed, CINAHL, PsycInfo, Embase, and Cochrane Library database were searched for publications between January 1976 and July 2012. Secondary searches were also conducted and reference lists scanned for relevant publications. FindingsFourteen articles reporting on three instruments were found. They differ with regard to their underlying theoretical concepts. Each instrument was tested in medical inpatient rehabilitation settings. Conclusions/Clinical RelevanceEach instrument appears to be useful for assessing specific aspects of patient participation in rehabilitation activities. More theoretical work is needed to clarify the underlying concepts as these instruments are not yet ready for clinical application

Longitudinal associations of clinical and biochemical head injury biomarkers with head impact exposure in adolescent football players

Consequences of subconcussive head impacts have been recognized, yet most studies to date have included small samples from a single site, used a unimodal approach, and lacked repeated testing.Published versionThis study was supported by grant R01NS113950 from the National Institute of Neurological Disorders and Stroke (Prof Kawata) and SCTBIRF 00055049 from the Indiana Spinal Cord and Brain Injury Research Fund, Indiana State Department of Health (Prof Kawata). Computational simulations were supported by CAREER award 1846059 from the National Science Foundation (Dr Kraft)