Results 211 to 220 of about 83,790 (253)
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The Importance of Correct Norms in Blood Volume Measurement
The American Journal of the Medical Sciences, 2007Accurate individual norms are required for blood volume measurement to be useful in a clinical setting. The primary physiological determinant of normal blood volume is body composition. Norms have been developed based on weight and body surface area, but these have systematic errors arising from variations in body composition or body size.
Joseph, Feldschuh, Stuart, Katz
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The importance of volume exclusion in modelling cellular migration
Journal of Mathematical Biology, 2014The modelling of collective migration has traditionally been undertaken in a continuous framework, with little reference to the individual-level mechanisms that give rise to such a concerted movement. One factor whose importance is now coming to light is that the individuals themselves occupy space in the domain, thus obstructing others from moving ...
Dyson, Louise, Baker, Ruth E.
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Unbiased Emission and Scattering Importance Sampling For Heterogeneous Volumes
ACM SIGGRAPH 2021 Talks, 2021We present two new distance-sampling methods for production volume path tracing. We extend the null-collision integral formulation to efficiently gather heterogeneous volumetric emission, achieving higher-quality results. Additionally, we propose a tabulation-based approach to importance sample volumetric in-scattering through a spatial guiding data ...
Wei-Feng Wayne Huang +3 more
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Estimation of bole volume by importance sampling
Canadian Journal of Forest Research, 1986A sampling methodology to provide an unbiased estimate of bole volume is introduced, with specific regard to its incorporation as an alternative to detailed dendrometry in a 3P sampling framework. In a demonstration of the technique to estimate merchantable volume in a 91-tree population, the average relative sampling error was 7.4%.
Timothy G. Gregoire +2 more
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Platelet Volume Measurements: The Importance Of Anticoagulation
Thrombosis and Haemostasis, 1981Recent advances in electrical cell sizing have made mean platelet volume (MPV) routinely available in most clinical laboratories. To study the importance of anticoagulation on platelet size stability, blood was collected in 7 different anticoagulants and stored at room temperature for up to 8 hours.
C B Thompson +5 more
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Estimation of Log Volume by Importance Sampling
Forest Science, 1986Abstract Importance sampling is proposed as a technique for estimating log volume that eliminates the bias of conventional methods arising from irregular log taper. In a trial of the technique, the average relative sampling error for individual logs, based on a measurement of one cross-section per log, was 5.2%.
George M. Furnival +2 more
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Continuing Important Conversations: An Introduction to This Volume
2018Schooling has often been described as a great equalizer and entry point to social mobility. However, students, particular those inhabiting the intersections of oppression, experience myriad obstacles in realizing these possibilities. In this chapter, we outline a need for continued engagement in contending power inequities and highlight diverse ...
Francisco J. Villegas, Janelle Brady
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The importance of volume of blood cultured in the detection of bacteremia and fungemia
Diagnostic Microbiology and Infectious Disease, 1983An analysis was made on the basis of 5,389 isolates from 5,008 positive blood cultures of the relative yields from 10, 20, and 30 ml of blood. Average yields from cultures of 20 and 30 ml of blood were, respectively, 38 and 61% greater than that from 10 ml of blood.
D M, Ilstrup, J A, Washington
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Sonographic evaluation of uterine volume and its clinical importance
Journal of Obstetrics and Gynaecology Research, 2016AbstractAimThe study was conducted to: (i) measure uterine volume in adolescent and perimenopausal age groups with normal pelvic findings and in women with pathological uteri scheduled for surgery, and (ii) utilize uterine volume as a parameter for the management of perimenopausal women scheduled for vaginal hysterectomy.MethodsData of 800 clinically ...
Shirish S, Sheth +3 more
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The Importance of Plasma Volume Expansion and Nutrition in Twin Pregnancy
Obstetrical & Gynecological Survey, 1984AbstractPhysiological adaptation including expansion in plasma volume is exaggerated in women with twin pregnancies. In singleton pregnancy and multiparous twin pregnancies there is an association between plasma volume expansion and birth weight, but this is not so in primigravid twin pregnancies.
D M, Campbell, I, MacGillivray
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