The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Per Hansson - One of the best experts on this subject based on the ideXlab platform.
-
Increased Pressure pain sensibility in fibromyalgia patients is located deep to the skin but not restricted to muscle tissue
Pain, 1995Co-Authors: Eva Kosek, J Ekholm, Per HanssonAbstract:Abstract This study was aimed at comparing Pressure pain sensibility in different tissues in fibromyalgia patients. Pressure pain thresholds (PPTs) were assessed in 16 fibromyalgia (FM) patients bilaterally at the bony part of epicondylus lateralis humeri, at the belly of m. extensor carpi ulnaris and at m. brachioradialis where the radial nerve branches pass underneath. Following a double-blind design, either a local anesthetic cream (EMLA) or a control cream was applied to the skin and PPTs were reassessed. The site with underlying nerve had a lower PPT than the bony site (P > 0.001) and the 'pure' muscle site (P > 0.001), respectively. These relations remained unaltered by skin hypoesthesia. The PPTs over the bony and the 'pure' muscle sites did not differ. Application of EMLA, compared to control cream, did not change PPTs over any area examined. The results demonstrated that Pressure-induced pain sensibility in FM patients is not most pronounced in muscle tissue and does not depend on Increased skin sensibility.
Ulrike Braun - One of the best experts on this subject based on the ideXlab platform.
-
Different aspects of the accelerated oxidation of polypropylene at Increased Pressure in an autoclave with regard to temperature, pretreatment and exposure media
Polymer Testing, 2014Co-Authors: Kamila Bajer, Ulrike BraunAbstract:The aim of this study is to investigate and compare three different factors, temperature, pretreatment and exposure media, on the oxidation and aging behavior of polypropylene (PP) bulk samples in the autoclave test under Increased oxygen Pressure. The aging of polypropylene, in this case syringe material, was accelerated under different conditions. The samples were aged at 75°, 80° and 85 °C under pure oxygen and at 75°C under ultrapure water. Further samples treated with 15 kGy (e-beam) were aged at 75°C under pure oxygen. All experiments were carried out at an oxygen partial Pressure of 50 bar. The different courses of aging were evaluated and compared. Color and transparency were used to assess the visual changes; weight, geometry and tensile test for the changes in technical properties; and DSC, FTIR and TDS-GC-MS to improve our physico-chemical understanding of the aging processes. The investigations showed that all factors tested influence oxidation/aging behaviour. Dry or wet exposure has no effect on aging during the induction time. However, after the point of maximum service time the degradation process of polymer changes significantly in the presence of water. The increase of aging temperature decreases the maximum service time; however a temperature higher than 80 °C changes the relative ratio of surface and bulk oxidation. The pretreatment with irradiation decreases the maximum service time further, because the irradiation partly damages the antioxidant, and the mobility of antioxidant fragments inside the polymer changes. These diffusion effects influence the relative ratio of bulk and surface oxidation of the polymer sample. © 2014 Elsevier Ltd. All rights reserved.
Eva Kosek - One of the best experts on this subject based on the ideXlab platform.
-
Increased Pressure pain sensibility in fibromyalgia patients is located deep to the skin but not restricted to muscle tissue
Pain, 1995Co-Authors: Eva Kosek, J Ekholm, Per HanssonAbstract:Abstract This study was aimed at comparing Pressure pain sensibility in different tissues in fibromyalgia patients. Pressure pain thresholds (PPTs) were assessed in 16 fibromyalgia (FM) patients bilaterally at the bony part of epicondylus lateralis humeri, at the belly of m. extensor carpi ulnaris and at m. brachioradialis where the radial nerve branches pass underneath. Following a double-blind design, either a local anesthetic cream (EMLA) or a control cream was applied to the skin and PPTs were reassessed. The site with underlying nerve had a lower PPT than the bony site (P > 0.001) and the 'pure' muscle site (P > 0.001), respectively. These relations remained unaltered by skin hypoesthesia. The PPTs over the bony and the 'pure' muscle sites did not differ. Application of EMLA, compared to control cream, did not change PPTs over any area examined. The results demonstrated that Pressure-induced pain sensibility in FM patients is not most pronounced in muscle tissue and does not depend on Increased skin sensibility.
Kamila Bajer - One of the best experts on this subject based on the ideXlab platform.
-
Different aspects of the accelerated oxidation of polypropylene at Increased Pressure in an autoclave with regard to temperature, pretreatment and exposure media
Polymer Testing, 2014Co-Authors: Kamila Bajer, Ulrike BraunAbstract:The aim of this study is to investigate and compare three different factors, temperature, pretreatment and exposure media, on the oxidation and aging behavior of polypropylene (PP) bulk samples in the autoclave test under Increased oxygen Pressure. The aging of polypropylene, in this case syringe material, was accelerated under different conditions. The samples were aged at 75°, 80° and 85 °C under pure oxygen and at 75°C under ultrapure water. Further samples treated with 15 kGy (e-beam) were aged at 75°C under pure oxygen. All experiments were carried out at an oxygen partial Pressure of 50 bar. The different courses of aging were evaluated and compared. Color and transparency were used to assess the visual changes; weight, geometry and tensile test for the changes in technical properties; and DSC, FTIR and TDS-GC-MS to improve our physico-chemical understanding of the aging processes. The investigations showed that all factors tested influence oxidation/aging behaviour. Dry or wet exposure has no effect on aging during the induction time. However, after the point of maximum service time the degradation process of polymer changes significantly in the presence of water. The increase of aging temperature decreases the maximum service time; however a temperature higher than 80 °C changes the relative ratio of surface and bulk oxidation. The pretreatment with irradiation decreases the maximum service time further, because the irradiation partly damages the antioxidant, and the mobility of antioxidant fragments inside the polymer changes. These diffusion effects influence the relative ratio of bulk and surface oxidation of the polymer sample. © 2014 Elsevier Ltd. All rights reserved.
Daniel J Clauw - One of the best experts on this subject based on the ideXlab platform.
-
Increased Pressure pain sensitivity in women with chronic pelvic pain
Obstetrics & Gynecology, 2013Co-Authors: S Assanie, Richard E Harris, Steven E Harte, Frank F Tu, Gina Neshewat, Daniel J ClauwAbstract:OBJECTIVE:To determine whether women with chronic pelvic pain and variable degrees of endometriosis demonstrate altered pain sensitivity relative to pain-free healthy women in a control group and whether such differences are related to the presence or severity of endometriosis or comorbid pain syndr
