Academic literature on the topic 'XCT 3000'

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Journal articles on the topic "XCT 3000"

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Koenig, Cory, Howard Wey, and Teresa Binkley. "Precision of the XCT 3000 and Comparison of Densitometric Measurements in Distal Radius Scans Between XCT 3000 and XCT 2000 Peripheral Quantitative Computed Tomography Scanners." Journal of Clinical Densitometry 11, no. 4 (October 2008): 575–80. http://dx.doi.org/10.1016/j.jocd.2008.06.002.

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Burrows, Melonie, David M. L. Cooper, Danmei Liu, and Heather A. McKay. "Bone and Muscle Parameters of the Tibia: Agreement Between the XCT 2000 and XCT 3000 Instruments." Journal of Clinical Densitometry 12, no. 2 (April 2009): 186–94. http://dx.doi.org/10.1016/j.jocd.2008.09.005.

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Steffens, M., G. Tysarczyk-Niemeyer, and H. Schiessl. "Clinical validation of a new peripheral quantitative computed tomograph: XCT 3000." Osteoporosis International 6, S1 (January 1996): 142. http://dx.doi.org/10.1007/bf02500108.

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Nakamura, Mituru, Tosiya Nasada, Yuri Nakao, Mayumi Isoo, Yosizou Nakaza, Takao Osaki, Kenzou Sugahara, Yosihiro Simoura, Hirosi Ito, and Kiichi Nonaka. "Evaluation of pQCT Bone Densitometry in the Femoral Neck Region Comparison of XCT-3000 and DXA-XR26." Japanese Journal of Radiological Technology 54, no. 1 (1998): 126. http://dx.doi.org/10.6009/jjrt.kj00001351796.

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Yousefi, Mohsen, Mehdi Dehnavi, and S. M. Miresmaeili. "Microstructure and impression creep characteristics Al-9Si-xCu aluminum alloys." Metallurgical and Materials Engineering 21, no. 2 (June 30, 2015): 115–26. http://dx.doi.org/10.30544/101.

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The effects of 1.5, 2.5 and 3.5 wt.% Cu additions on the microstructure and creep behavior of the as-cast Al-9Si alloy were investigated by impression tests. The tests were performed at temperature ranging from 493 to 553 K and under punching stresses in the range 300 to 414 MPa for dwell times up to 3000 seconds. The results showed that, for all loads and temperatures, the Al–9Si–3.5Cu alloy had the lowest creep rates and thus, the highest creep resistance among all materials tested. This is attributed to the formation of hard intermetallic compound of Al2Cu, and higher amount of α-Al2Cu eutectic phase. The stress exponent and activation energy are in the ranges of 5.2- 7.2 and 115 -150 kJ/ mol, respectively for all alloys. According to the stress exponent and creep activation energies, the lattice and pipe diffusion- climb controlled dislocation creep were the dominant creep mechanism.
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Thadathil, Pankajakshan, Aravind K. Ghosh, J. S. Sarupria, and V. V. Gopalakrishna. "An interactive graphical system for XBT data quality control and visualization." Computers & Geosciences 27, no. 7 (August 2001): 867–76. http://dx.doi.org/10.1016/s0098-3004(00)00172-2.

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BUDILLON, G., and S. R. RINTOUL. "Fronts and upper ocean thermal variability south of New Zealand." Antarctic Science 15, no. 1 (February 19, 2003): 141–52. http://dx.doi.org/10.1017/s0954102003001135.

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The structure and variability of Southern Ocean fronts south of New Zealand are described based on fifteen summer expendable bathythermograph (XBT) sections obtained between 1994 and 2001. The temperature variability north of 60°S is dominated by meanders and meridional shifts of the Sub-Antarctic Front (SAF), which often bifurcates to form northern and southern branches. The northern branch follows the southern edge of the Campbell Plateau, while the southern branch is found over the abyssal plain of the south-west Pacific Basin. The northern and southern branches of the SAF can be separated by as much as 900 km. Intense eddies or meanders of the SAF displace isotherms by as much as 5 degrees of latitude from their positions when such features are absent. The Polar Front (PF) position is more stable in time, although cold-core features associated with eddies or meanders of the front are occasionally observed between the southern SAF and the PF. The position of the southern ACC front is extremely stable, consistently overlying the 3000 m isobath on the northern flank of the Pacific-Antarctic/south-east Indian Ridge.
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Martini, Kim I., Matthew H. Alford, Eric Kunze, Samuel M. Kelly, and Jonathan D. Nash. "Observations of Internal Tides on the Oregon Continental Slope." Journal of Physical Oceanography 41, no. 9 (September 1, 2011): 1772–94. http://dx.doi.org/10.1175/2011jpo4581.1.

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Abstract A complex superposition of locally forced and shoaling remotely generated semidiurnal internal tides occurs on the Oregon continental slope. Presented here are observations from a zonal line of five profiling moorings deployed across the continental slope from 500 to 3000 m, a 24-h expendable current profiler (XCP) survey, and five 15–48-h lowered ADCP (LADCP)/CTD stations. The 40-day moored deployment spans three spring and two neap tides, during which the proportions of the locally and remotely forced internal tides vary. Baroclinic signals are strong throughout spring and neap tides, with 4–5-day-long bursts of strong cross-slope baroclinic semidiurnal velocity and vertical displacement . Energy fluxes exhibit complex spatial and temporal patterns throughout both tidal periods. During spring tides, local barotropic forcing is strongest and energy flux over the slope is predominantly offshore (westward). During neap tides, shoaling remotely generated internal tides dominate and energy flux is predominantly onshore (eastward). Shoaling internal tides do not exhibit a strong spring–neap cycle and are also observed during the first spring tide, indicating that they originate from multiple sources. The bulk of the remotely generated internal tide is hypothesized to be generated from south of the array (e.g., Mendocino Escarpment), because energy fluxes at the deep mooring 100 km offshore are always directed northward. However, fluxes on the slope suggest that the northbound internal tide is turned onshore, most likely by reflection from large-scale bathymetry. This is verified with a simple three-dimensional model of mode-1 internal tides propagating obliquely onto a near-critical slope, whose output conforms fairly well to observations, in spite of its simplicity.
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Koenig, Cory, Teresa Binkley, and Bonny Specker. "Comparison and precision of the XCT 3000 and XCT 2000 peripheral quantitative computer tomography densitometers for geometric and material bone parameters of the radius." FASEB Journal 22, S1 (March 2008). http://dx.doi.org/10.1096/fasebj.22.1_supplement.883.12.

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"Evaluation of pQCT Bone Densitometry in the Femora Neck Rgion Comparison of XCT-3OOO and DXA-XR26." Japanese Journal of Radiological Technology 53, no. 9 (1997): 1441. http://dx.doi.org/10.6009/jjrt.kj00001356468.

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Dissertations / Theses on the topic "XCT 3000"

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Soltaninejad, Ali. "Family caregivers’ quality of life: the case of schizophrenia and affective disorders (A mixed method study)." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18604.

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Schwere psychische Erkrankungen wie Schizophrenie und affektive Störungen haben nicht nur einen erheblichen Einfluss auf das Leben der Patienten, sondern auch ihrer Bezugspersonen. Die Entdeckung der Lebensqualität und ihrer relevanten Faktoren für pflegende Angehörige von Patienten mit psychischen Erkrankungen hilft Gesundheitsfachkräften sowie dem System, besser mit pflegenden Angehörigen zusammenzuarbeiten. Außerdem hilft es den Pflegekräften, auf eine adaptive Weise mit Patienten umzugehen. Die Studie zielte darauf ab, die Belastung und Lebensqualität von Pflegekräften, ihre spezifischen Bedürfnisse und Bewältigungsstrategien zu identifizieren. Außerdem sollte ein neuer Fragebogen entwickelt werden, um die Lebensqualität der Pflegekräfte zu messen. Diese Studie wendet einen Mixed-Method-Ansatz mit drei explorativen, quantitativen und ergänzenden Phasen an. Die qualitative explorative Phase der Studie wurde mittels halbstrukturierter Interviews mit 45 Betreuern von Patienten mit Schizophrenie und affektiven Störungen durchgeführt. Die Daten wurden durch qualitative Inhaltsanalyse untersucht. Die quantitative Phase diente der Entwicklung und Validierung eines neuen Instruments zur Messung der Lebensqualität von Pflegekräften sowie der Bereitstellung von Hauptfragen des Interviews für die zusätzliche Phase der Studie. Die Ergänzungsphase der Studie wurde in halbstrukturierten Interviews mit 18 Betreuern von Patienten mit Schizophrenie sowie affektiven Störungen durchgeführt. Die Daten wurden mittels Grounded-Theory-Analyse untersucht. Die Ergebnisse der Studie ermittelten die Hauptbelastungen, denen die Pflegepersonen ausgesetzt waren. Darüber hinaus wurden durch die Entwicklung und Validierung eines neuen Fragebogens die wichtigsten Faktoren für die Lebensqualität aufgedeckt. Ergebnisse der Ergänzungsphase der Studie identifizierten das Kernkonzept der Pflegeerfahrung sowie deren Hauptkategorien. Außerdem werden verschiedene Arten von Bewältigungsstrategien vorgeschlagen, die die Pflegekräfte übernommen haben. Weiterhin zeigt diese Phase die Trajektorie von Pflegeerfahrung und Bewältigungsstrategien in verschiedenen Phasen der Erkrankung. Die Studie bietet einige Vorschläge für das System, Fachkräfte im Gesundheitswesen sowie Pflegekräfte an, um die Lebensqualität der Pflegekräfte zu verbessern und die Absicht zu vermindern, Patienten einem institutionellen Pflegezentrum anzuvertrauen.
Severe mental illnesses, such as schizophrenia and affective disorders, have a considerable impact on the lives of not only patients but also their caregivers. Discovering the quality of life and its contributing factors for family caregivers of patients with mental illnesses helps health-care professionals as well as the system to work better with family caregivers. Also, it helps the caregivers to cope with patients in an adaptive way. The study aimed to identify the burden and quality of life of caregivers, their specific needs and coping strategies. Also, it aimed to develop a new questionnaire to measure caregivers’ quality of life. This study applied a mixed-method approach with three exploratory, quantitative and supplementary phases. The qualitative exploratory phase of the study was conducted via semi-structured interviews with 45 caregivers of patients with schizophrenia and affective disorders. Data were analyzed through qualitative content analysis. The quantitative phase was designed to develop and validate a new instrument to measure caregivers’ quality of life as well as to provide main questions of the interview for the supplementary phase of the study. The supplementary phase of the study was conducted by semi-structured interviews with 18 caregivers of patients with schizophrenia and affective disorders. Data were analyzed by grounded theory analysis. Findings of the study identified main burdens that the caregivers endured; additionally, main factors which contributed to the quality of life were revealed by developing and validating a new questionnaire. Findings of the supplementary phase of the study identified the core concept of caregiving experience as well as its main categories. Also, it proposes different kinds of coping strategies that caregivers adopted. Furthermore, this phase shows the trajectory of caregiving experience and coping strategies in different phases of the illness. The study provides some suggestions for the system, health-care professionals as well as caregivers in order to increase caregivers’ quality of life and to lessen the intention to entrust patients to an institutional take care center.
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Maiweg, Eva. "Korrelation von pQCT-Messwerten am distalen Radius (XCT 2000) und an der distalen Tibia (XCT 3000)." Doctoral thesis, 2010. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-49364.

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Die Osteoporose ist als häufigste Knochenerkrankung im Alter die Ursache vieler Beeinträchtigungen. Definiert wird sie über die Knochendichte, die unter anderem mit der peripheren quantitativen Computertomographie (pQCT) bestimmt werden kann. Mit unseren Daten aus Knochendichtemessungen per pQCT am distalen Radius (XCT 2000) und an der distalen Tibia (XCT 3000) konnten wir im Tukey-HSD-Test zeigen, dass die Knochendichteparameter an oberer und unterer Extremität gut miteinander korrelieren. Es wurden die trabekuläre und die totale Dichte sowie der polare stress-and-strain-Index berücksichtigt. Die trabekuläre Knochendichte an der Tibia, dem gewichtstragenden Knochen, ist höher als die am Radius. Einflussnahme auf die Knochendichte konnte mittels Regressionsanalyse für das Alter, das Geschlecht, die Größe, das Gewicht und den BMI nachgewiesen werden. Die altersbedingte Abnahme der Knochendichte ist an der Tibia stärker ausgeprägt als am Radius. Bei der Frau bedingt eine hohe totale Dichte am Radius eine höhere Festigkeit an der Tibia als bei entsprechenden Dichtewerten beim Mann. Unter Mitberücksichtigung des Alters steigt die Festigkeit an der Tibia beim Mann mit den Jahren an. Bei der Frau sinkt sie, wie auch am Radius, mit steigendem Alter. Das Gewicht nimmt signifikanten Einfluss auf die untere Extremität, nicht jedoch auf den Radius. Die Betrachtung des BMI zeigt, dass nicht die reine Gewichtszunahme sondern die Kombination aus Größe und Gewicht diesen positiven Effekt erzielen, Fettleibigkeit ab dem Adipositasgrad aber einen negativen Einfluss auf die Knochendichte und -festigkeit hat
As a common bone disease in elderly patients osteoporosis is a cause of severe physical impairment. It is defined by bone mineral density (BMD), which can be determined by peripheral quantitative computer tomography (pQCT). Our data from BMD measurements made by pQCT at the distal radius (XCT 2000) and at the distal tibia (XCT 3000) shows through application of the Tukey-HSD-tests that BMD values at the upper and lower extremities correlate with each other. Total and trabecular BMD as well as the polar stress-and-strain index are considered. Trabecular BMD at the body weight bearing distal tibia is higher than at the distal radius. Influence on BMD was verified by regression analysis for age, sex, height, weight and BMI. Age-related decrease of BMD is more distinct at the tibia than at the radius. In women high total BMD accounts for higher strength at the tibia than it does for corresponding values in men. Considering age, strength of the tibia increases in men during the years. In women it decreases, like it does at the radius. Weight has significant influence on the lower extremity, however not on the radius. Regarding the BMI, not just an increase in mass but a combination of weight and height causes this positive effect. Obesity above level I has a negative influence on BMD and bone strength
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Maiweg, Eva [Verfasser]. "Korrelation von pQCT-Messwerten am distalen Radius (XCT 2000) und an der distalen Tibia (XCT 3000) / vorgelegt von Eva Maiweg." 2010. http://d-nb.info/1005402124/34.

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Book chapters on the topic "XCT 3000"

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Jin, Helena, Brendan Croom, Bernice Mills, Xiaodong Li, Jay Carroll, Kevin Long, and Judith Brown. "Multiscale XCT Scans to Study Damage Mechanism in Syntactic Foam." In Advancements in Optical Methods & Digital Image Correlation in Experimental Mechanics, Volume 3, 37–39. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30009-8_5.

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