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Showing 1 to 20 of 29 for “"PTR"”.
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Calibration, optimization, and deployment of PTR-MS instruments during the AIRMAP project
<p>Proton Transfer Reaction Mass Spectrometry (PTR-MS) is an increasingly popular technique for monitoring volatile organic compounds with high sensitivity and time resolution. This dissertation encompasses three different projects, sharing the common theme of expanding the knowledge and utility of …
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A Mixed Method Study of Prevent, Teach, and Reinforce for Families: The Effectiveness for Culturally Diverse Families
Prevent, Teach, and Reinforce for Families (PTR-F) has been found effective in increasing parents’ use of positive behavior support (PBS)-based strategies and decreasing children’s challenging behavior. However, only few studies have purposefully explored the effectiveness of PTR-F for culturally …
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Characterization of Pyrenophora Tritici-Repentis in Wheat and Rye to Study Tan Spot Susceptibility and Insights Into Its Relationship with Stem Rust Resistance
… ascomycete fungus, Pyrenophora tritici-repentis (Ptr), is a major foliar fungal disease of wheat worldwide. To date, Ptr isolates have been grouped into eight races based on the production of three host selective effectors (toxins), Ptr ToxA, ToxB, and ToxC, which are associated with necrosis and …
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Development and Testing of Remote Facilitation of Prevent-Teach-Reinforce for Families to Address Challenging Behavior in Young Children (PTR-F:R)
… of Prevent Teach Reinforce for Families (PTR-F:R) to address the challenging behavior of young children in home settings.</p> <p>A single case multiple baseline design was used across five families with children between the ages of 2 and 5. Data was collected on the feasibility, usability, …
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Einführung der Polythermen Temperatur Rampen Methode für die Ermittlung kinetischer Daten
… Daten (Polythermer Temperatur-Rampen Reaktor, PTR bzw. TSR) [1] zielt darauf ab, die erforderliche Untersuchungszeit deutlich zu verkürzen. Diese neue Methode setzt die Einhaltung wohldefinierter Randbedingungen voraus. Die wichtigsten Randbedingungen fordern eine schnelle Einstellung des …
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Development of a Novel Methodology for the Identification of VOC Emission Sources in Indoor Environments based on the Material Emission Signatures and Air Samples measured by PTR-MS
… Proton Transfer Reaction - Mass Spectrometry (PTR-MS), 2) to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects, 3) to develop and evaluate a methodology to identify individual sources of VOC emissions based on the measurements of …
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The tribology of laminated magnetic recording heads
… the mechanisms that lead to pole tip recession (PTR) in laminated magnetic recording heads (also known as "sandwich heads"). These heads provide a platform for the utilisation of advanced soft magnetic thin films in practical recording heads suitable for high frequency helical scan tape recording …
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Transmutation rates in the annulus gas of pressure tube water reactors
… of radiation levels. Pressure Tube Reactor (PTR) and Pressure Tube Supercritical Water Reactor (PT SCWR) fuel channel models have been developed in Monte Carlo N-Particle (MCNP) code. Neutron fluxes in the fuel channel annulus gas have been obtained by simulating different types of neutron …
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Rapid and Green Volatilomics of Roasted Hazelnuts: Comparative Multiplatform Analysis and Advanced Data Mining
… Reaction - Time of Flight - Mass Spectrometry (PTR-ToF-MS) as rapid and green analytical techniques for food volatilomics, focusing on their application to the roasted hazelnut volatilome characterization. Although PTR-ToF-MS is a well-established technique, its compliance with the principles of …
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Volatile organic compounds in the New England troposphere: Atmospheric chemistry and measurement techniques
… were made of potential interferences in the PTR-MS toluene measurements related to sampling and analysis of monoterpenes, including fragmentation of the monoterpenes and some of their primary carbonyl oxidation products in the PTR-MS drift tube. The analysis supported only minor interferences …
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Pole tip recession in linear tape systems
… in this field) determined the extent of PTR and stain (if produced) in linear heads. Approximately linear dependencies were found for saturated PTR increasing with normalized water content increasing over the range studied using the same tape. Fe Stain (if produced) preferentially formed …
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The application of novel mass spectrometric techniques for the analysis of volatile organic compounds in different environments
… the proton transfer reaction mass spectrometer (PTR-MS) has enabled the online analysis of VOC’s from both biogenic and anthropogenic sources. This instrument, however, provides little structural information making it impossible to distinguish between isomeric compounds. Here a range of …
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Computational analysis of cooperation and competition mechanisms between RNA-binding proteins
… regulation of gene expression (PTR). Understanding RBPs behavior is therefore crucial given their participation in all stages of the mRNA life cycle. Although an increasing amount of work has highlighted the relevance of RBP-RBP interactions for PTR, only recent studies have …
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Tratamiento con radiofrecuencia versus bloqueo analgésico con corticoide de los nervios geniculares en la prótesis total de rodilla dolorosa, estudio clínico aleatorizado doble ciego.
… gold standard es la prótesis total de rodilla (PTR); sin embargo entre un 15%-30% de los pacientes intervenidos de prótesis total de rodilla continúan con dolor y limitación. Objetivo Queremos valorar, analizar y comparar el resultado que obtenemos en términos de: alivio del dolor, funcionalidad …
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Language technologies for understanding law, politics, and public policy
… text model, Probabilistic Text Reuse (PTR), for finding repeated passages of text in large document collections. We illustrate the utility of PTR by finding template ideas, less-common voices, and insights into document structure in a large collection of public comments on regulations …
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Studying the riboregulatory role of Hfq in Klebsiella pneumoniae using CLASH (crosslinking, ligation and sequencing of hybrids)
… transcription, post-transcriptional regulation (PTR), and translation. Although transcription is an essential regulatory mechanism for gene expression, the post-transcriptional process is critical in fine-tuning the gene expression before translating the mRNAs into proteins. PTR mechanisms …
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Student achievement as a function of class size and pupil-teacher ratio
… terms class size (CS) and pupil-teacher ratio (PTR), making it difficult to draw clear conclusions regarding the effects of class size on student achievement.</p> <p><em>Purpose</em>: To assess differences, if any, in achievement between students attending classes where the class-size is …
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Διερεύνηση της επίδρασης μετεωρολογικών παραμέτρων στην συχνότητα νοσοκομειακών λοιμώξεων με εφαρμογή μεθόδων παλινδρόμησης χρονοσειρών
… ήταν 20% υψηλότερες σε σχέση με τον Φεβρουάριο (PTR = 1.20, 95% ΔΕ: 1.02–1.42), με το 8% των λοιμώξεων να αποδίδεται στην εποχικότητα (AF = 0.079, 95% ΔΕ: 0.045–0.181). Η προσθήκη των μετεωρολογικών παραμέτρων αύξησε τη διακύμανση της συχνότητας των Gram-αρνητικών βακτηρίων ανά εποχή κατά περίπου …
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Dissecting the Development and Function of C. elegans Glia with Mutations of the mls-2 and vab-3 Genes
… and expression of the genes hlh-17/Olig and ptr-10/Patched-related. Similar pathways regulate oligodendrocyte generation in vertebrate spinal cords. Using mls-2 and vab-3 mutants, as well as CEPsh glia-ablated animals, I also uncover roles for CEPsh glia in dendrite extension and axon …
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Effective Scheduling Algorithms for Cross-Interference Mitigation in Heterogeneous Wireless Networks
… improvement on LR-WPAN Packet Transmission Rate (PTR).
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