نتایج جستجو برای: روش ldf

تعداد نتایج: 370050  

2015
Kai Mei Lei Du Min Yan Zhaohui Zhang Fengjiang Zhang Lina Gong Kai Sun Jie Zhang Yumin Tang Chunling Jiang Jin Liu Jeffrey Chalmers

BACKGROUND Intraoperative blood salvage, an effective blood conservation strategy, has not been applied in onco-surgery, because of potential malignant cell contamination. In this study we tested effectiveness of a modified leukocyte depletion filter (M-LDF) for removal of tumor cells. MATERIALS AND METHODS The effects of M-LDF and regular LDF on removal of cells (HepG2 cell line) were compar...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2002
Sarah-Jane Guild Gabriela A Eppel Simon C Malpas Niwanthi W Rajapakse Alistair Stewart Roger G Evans

We tested for regional differences in perfusion responses, within the renal medulla and cortex, to renal nerve stimulation in pentobarbital sodium-anesthetized rabbits. Laser-Doppler flux (LDF) was monitored at various depths below the cortical surface (1-15 mm). Basal cortical LDF (1-3 mm, approximately 200-450 U) was greater than medullary LDF (5-15 mm, approximately 70-160 U), but there were...

Journal: :Clinical science 2001
A D Clark E J Barrett S Rattigan M G Wallis M G Clark

Insulin-mediated increases in limb blood flow are thought to enhance glucose uptake by skeletal muscle. Using the perfused rat hindlimb, we report that macro laser Doppler flowmetry (LDF) probes positioned on the surface of muscle detect changes in muscle capillary (nutritive) flow. With this as background, we examined the effects of insulin and adrenaline (epinephrine), which are both known to...

Journal: :Journal of epidemiology and community health 2007
Rubén Román Mercè Comas Lorena Hoffmeister Xavier Castells

OBJECTIVE To apply a continuous hazard function approach to calculate the lifetime density function (LDF) at any age, and to compare the life expectancies derived from the LDF with those obtained with standard life table (SLT) methods. METHODS Age-specific mortality rates were modeled through a continuous hazard function. To construct the cumulative hazard function, appropriate integration li...

Journal: :Microvascular research 2011
Garry A Tew Markos Klonizakis Helen Crank J David Briers Gary J Hodges

OBJECTIVE To compare the inter-day reproducibility of post-occlusive reactive hyperaemia (PORH) and sympathetic vasomotor reflexes assessed by single-point laser Doppler flowmetry (SP-LDF), integrating-probe LDF (IP-LDF) and laser speckle contrast imaging (LSCI), and the spatial variability of PORH assessed by IP-LDF and LSCI. We also evaluated the relationship between IP-LDF and LSCI perfusion...

Journal: :Axioms 2022

Rough set (RS) and fuzzy (FS) theories were developed to account for ambiguity in the data processing. The most persuasive modernist abstraction of an FS is linear Diophantine (LD-FS). This paper introduces a resilient hybrid RS model (LDF-RS) on paired universes based relation (LDF-R). typical method (F-RS) bipolar FRS (BF-RS) two that are more appropriate customizable. By using LDF-level cut ...

Journal: :The Journal of clinical investigation 1985
T Ohta N H Fidge P J Nestel

To investigate the unique distribution in plasma of apolipoprotein A-IV (apo A-IV) we have determined, in a series of in vitro and in vivo studies, the redistribution among lipoproteins of 125I-apo A-IV. Free 125I-apo A-IV associated predominantly with high density lipoprotein (HDL) (72 +/- 3.5%) in incubations with plasma, and with triglyceride-rich lipoproteins (TRL) (65 +/- 3.0%) in incubati...

2009
Babette S. Zemel Virginia A. Stallings Mary B. Leonard Donna R. Paulhamus Heidi H. Kecskemethy H. Theodore Harcke Richard C Henderson

Lateral distal femur (LDF) scans by dual-energy X-ray absorptiometry (DXA) are often feasible in children for whom other sites are not measurable. Pediatric reference data for LDF are not available for more recent DXA technology. The objective of this study was to assess older pediatric LDF reference data, construct new reference curves for LDF bone mineral density (BMD), and demonstrate the co...

Journal: :The Journal of the American Osteopathic Association 2014
Rafael Zegarra-Parodi Eric J Snider Peter Yong Soo Park Brian F Degenhardt

Laser Doppler flowmetry (LDF) is commonly used in combination with reactivity tests to noninvasively evaluate skin sympathetic nerve activity and skin microvascular function. In manual medicine research, LDF has been used as a marker for global peripheral sympathetic nervous system function, but these results should be considered with caution because skin sympathetic nerve activity physiology i...

Journal: :American journal of physiology. Heart and circulatory physiology 1997
Luciano Bernardi Daniel Hayoz René Wenzel Claudio Passino Alessandro Calciati Roger Weber Georg Noll

To determine whether skin blood flow is local or takes part in general regulatory mechanisms, we recorded laser-Doppler flowmetry (LDF; left and right index fingers), blood pressure, muscle sympathetic nerve activity (MSNA), R-R interval, and respiration in 10 healthy volunteers and 3 subjects after sympathectomy. We evaluated 1) the synchronism of LDF fluctuations in two index fingers, 2) the ...

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