The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
K. A. H. Lindberg - One of the best experts on this subject based on the ideXlab platform.
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Measurement of cell Wall Penetration in wood of water-based chemicals using SEM/EDS and STEM/EDS technique
Wood Science and Technology, 1999Co-Authors: Lennart Wallström, K. A. H. LindbergAbstract:The Penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell Wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell Wall were used. Measurements of the increase in cell Wall thickness showed that glycerol and PEG 200 resulted in greater cell Wall bulking compared to PEG 1500 and pentaerythritol.
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measurement of cell Wall Penetration in wood of water based chemicals using sem eds and stem eds technique
Wood Science and Technology, 1999Co-Authors: Lennart Wallström, K. A. H. LindbergAbstract:The Penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell Wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell Wall were used. Measurements of the increase in cell Wall thickness showed that glycerol and PEG 200 resulted in greater cell Wall bulking compared to PEG 1500 and pentaerythritol.
Lennart Wallström - One of the best experts on this subject based on the ideXlab platform.
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Measurement of cell Wall Penetration in wood of water-based chemicals using SEM/EDS and STEM/EDS technique
Wood Science and Technology, 1999Co-Authors: Lennart Wallström, K. A. H. LindbergAbstract:The Penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell Wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell Wall were used. Measurements of the increase in cell Wall thickness showed that glycerol and PEG 200 resulted in greater cell Wall bulking compared to PEG 1500 and pentaerythritol.
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measurement of cell Wall Penetration in wood of water based chemicals using sem eds and stem eds technique
Wood Science and Technology, 1999Co-Authors: Lennart Wallström, K. A. H. LindbergAbstract:The Penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell Wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell Wall were used. Measurements of the increase in cell Wall thickness showed that glycerol and PEG 200 resulted in greater cell Wall bulking compared to PEG 1500 and pentaerythritol.
Anton T M G Tiebosch - One of the best experts on this subject based on the ideXlab platform.
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vessel Wall reaction after vena cava filter placement
CardioVascular and Interventional Radiology, 2002Co-Authors: Arend Hoekstra, J M Elstrodt, Peter G J Nikkels, Anton T M G TieboschAbstract:Purpose: To evaluate the interaction between the Cordis Keeper vena caval filter and vessel Wall in a porcine model. Methods: Implantation of the filter was performed in five pigs. Radiologic data concerning inferior vena cava (IVC) diameter and filter patency, filter leg span, and stability were collected. At 2 or 6 months post-implantation, histopathologic analysis of the IVC Wall was performed. Results: All filters remained patent with no evidence of migration. However, at 6 months follow-up, two legs of one filter penetrated the vessel Wall and were adherent to the liver. These preliminary results suggest that with the observed gradual increase in the filter span, the risk of caval Wall Penetration increases with time, especially in a relatively small IVC (average diameter 16 mm). Conclusion: The Cordis Keeper filter was well tolerated, but seems to be prone to caval Wall Penetration in the long term.
Srikar R Adhikari - One of the best experts on this subject based on the ideXlab platform.
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an unseen danger frequency of posterior vessel Wall Penetration by needles during attempts to place internal jugular vein central catheters using ultrasound guidance
Critical Care Medicine, 2010Co-Authors: Michael Blaivas, Srikar R AdhikariAbstract:Objectives:To evaluate the frequency of unsuspected posterior vessel Wall Penetration of the internal jugular vein during ultrasound-guided needle cannulation.Design:Prospective, single-blinded observational study.Setting:Urban level I emergency department with an annual census of 80,000.Patients:Re
Michael Blaivas - One of the best experts on this subject based on the ideXlab platform.
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an unseen danger frequency of posterior vessel Wall Penetration by needles during attempts to place internal jugular vein central catheters using ultrasound guidance
Critical Care Medicine, 2010Co-Authors: Michael Blaivas, Srikar R AdhikariAbstract:Objectives:To evaluate the frequency of unsuspected posterior vessel Wall Penetration of the internal jugular vein during ultrasound-guided needle cannulation.Design:Prospective, single-blinded observational study.Setting:Urban level I emergency department with an annual census of 80,000.Patients:Re
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An unseen danger: frequency of posterior vessel Wall Penetration by needles during attempts to place internal jugular vein central catheters using ultrasound guidance.
Critical care medicine, 2009Co-Authors: Michael Blaivas, Srikar AdhikariAbstract:To evaluate the frequency of unsuspected posterior vessel Wall Penetration of the internal jugular vein during ultrasound-guided needle cannulation. Prospective, single-blinded observational study. Urban level I emergency department with an annual census of 80,000. Residents who had previously completed a 2-day ultrasound course including a 3-hr didactic and hands-on session on ultrasound-guided central venous cannulation. Residents were asked to place an ultrasound-guided catheter on a human torso mannequin. Residents used a short-axis approach for ultrasound guidance. During the procedure, an 8-4 MHz convex (endocavity) transducer was used to observe the path of the resident's needle without interference with the placement procedure. Unknown to residents, researchers tracked the frequency of posterior Wall Penetration and the final needle location when the resident felt that optimal needle placement was achieved in the lumen of the internal jugular. Residents were also asked to rate their confidence regarding appropriate final needle position on a 10-point Likert scale. Statistical analysis consisted of descriptive statistics and Spearman correlation analysis. A total of 25 residents participated. All had placed at least one ultrasound-guided central catheter previously. The median number of previous ultrasound-guided cannulations was 8.0. Sixteen (64%) residents accidentally penetrated the posterior Wall of the internal jugular vein during cannulation. The median number of posterior Wall Penetrations was 1.0 for all residents. In six cases the final location of the needle was through the posterior Wall and deep to the venous lumen. In five of these cases the carotid artery was actually mistakenly penetrated. Median confidence by residents regarding appropriate needle placement was 8.0 out of 10. More training and more ultrasound-guided catheters placed were associated with fewer posterior Wall Penetrations (p = .04). In this study, residents accidentally penetrated the posterior vessel Wall of the internal jugular in a lifelike vascular access mannequin in the majority of cases. These results suggest that care must be taken even with ultrasound-guided central catheter placement and that alternative ultrasound guidance techniques, such as visualization of the vein and needle in longitudinal axis, should be considered.