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Tom Lindfors Carita Kvarnström Ari Ivaska 《Journal of electroanalytical chemistry (Lausanne, Switzerland)》2002,518(2):131-138
Electrically conducting soluble polyaniline (PANI), containing different amounts of a bulky lipophilic cationic additive, tridodecylmethylammonium chloride (TDMACl), was studied by Raman (λexc=780 nm) and UV–vis spectroscopy. PANI was made simultaneously electrically conducting and soluble with bis[4-(1,1,3,3-tetramethylbutyl)phenyl]phosphoric acid in dichloromethane. The PANI membranes were prepared by drop casting on glassy carbon or ITO substrates. Raman and UV–vis measurements were carried out in a 0.1 M CaCl2 solution at potentials between 400 and ?600 mV (vs. SCE) at pH 6, or alternatively at the open circuit potential at pH 10. The results of Raman, UV–vis and cyclic voltammetric measurements confirm that the incorporation of TDMACl into the PANI membrane facilitates the oxidation and reduction of PANI. 相似文献
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Miodrag Palfi Lotta Martinsson Kristina Sundstr?m 《Transfusion and apheresis science》2007,36(3):291-295
BACKGROUND: The aim of this study was to find an effective treatment for hypocalcemic symptoms during plateletpheresis and to evaluate if a combination of calcium, magnesium and vitamin D3 is more effective in comparison to routine calcium supplementation. MATERIAL AND METHODS: A study group consisting of 10 donors, having a history of previous hypocalcemic symptoms during plateletpheresis, donated platelets twice in a one-month period. During the first donation combination tablets (600mg Ca+300mg Mg+100IU vitamin D3) were used to treat hypocalcemic symptoms while routine treatment calcium carbonate tablets (1000mg Ca) were used during the second donation. If symptoms persisted after 10min the same dose was repeated. A control group, with no supplementation, consisting of five donors, with no history of hypocalcemic symptoms, were included. Donor subjective symptoms were graded and recorded on four occasions: at the start of plateletpheresis, when symptoms appeared, 10min after the first tablet and at the end of donation. Samples for analysis of ionized calcium (iCa), magnesium and potassium were also taken at the same occasions. RESULTS: All donors from the study group experienced minor or medium hypocalcemic symptoms and needed a second dose of supplementation. Calcium carbonate tablets completely relieved the hypocalcemic symptoms in six donors, it had no effect on three donors and one donor experienced aggravated symptoms. The combination tablets completely relieved the symptoms in three donors, one donor experienced a partial relief and six donors had no relief of symptoms. There were no significant differences in iCa, potassium and magnesium levels were noted in the study group irrespective of which tablets were used for treatment of hypocalcemic symptoms. After plateletpheresis the median iCa levels declined by 30% and potassium levels declined by 3-11% in all donors while the magnesium levels were not significantly affected. There was no correlation between the presence of symptoms and the changed levels of iCa or magnesium. CONCLUSION: Addition of magnesium and vitamin D3 to calcium seems to have no beneficial effect in the treatment of hypocalcemic symptoms in plateletpheresis donors. 相似文献
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Hamari Lotta Konttila Jenni Merikukka Marko Tuomikoski Anna-Maria Kouvonen Petra Kurki Marjo 《Journal of immigrant and minority health / Center for Minority Public Health》2022,24(2):506-525
Journal of Immigrant and Minority Health - Parental support is of paramount importance in the promotion of positive parenting, strengthening parenthood and protecting children from disadvantages... 相似文献
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Protocol for digital intervention for effective health promotion of small children—A cluster randomized trial
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Lotta Saarnio MSc RN Anne‐Marie Boström RN PhD Petter Gustavsson PhD Joakim Öhlén PhD RN 《Scandinavian journal of caring sciences》2016,30(2):312-319
Maintaining the well‐being of older people who are approaching the end‐of‐life has been recognised as a significant aspect of well‐being in general. However, there are few studies that have explicitly focused on at‐homeness among older people. This study aims to illuminate meanings of at‐homeness among older people with advancing illnesses. Twenty men and women, aged 85 or older, with advancing illnesses and who lived in their own homes, in nursing homes or in short‐term nursing homes in three urban areas of Sweden were strategically sampled in the study. Data were generated in narrative interviews, and the analysis was based on a phenomenological hermeneutical method. After obtaining a naïve understanding and conducting structural analyses, two aspects of the phenomenon were revealed: at‐homeness as being oneself and at‐homeness as being connected. At‐homeness as being oneself meant being able to manage ordinary everyday life as well as being beneficial to one's life. At‐homeness as being connected meant being close to significant others, being in affirming friendships and being in safe dependency. Here, at‐homeness is seen as a twofold phenomenon, where being oneself and being connected are interrelated aspects. Being oneself and being connected are further interpreted by means of the concepts of agency and communion, which have been theorised as two main forces of the human being. 相似文献
10.
Engman ML Malm G Engstrom L Petersson K Karltorp E Tear Fahnehjelm K Uhlen I Guthenberg C Lewensohn-Fuchs I 《Scandinavian journal of infectious diseases》2008,40(11-12):935-942
Congenital cytomegalovirus (CMV) infection is asymptomatic in 90% of infected newborns but approximately 10-20% of these infants are at risk of developing sequelae later, mostly hearing deficit. The aims of the study were to investigate the prevalence of congenital CMV infection in a Swedish population of newborns and investigate the relative risk of hearing deficit in newborns with congenital CMV infection. The dried blood spot (DBS) samples of 6060 newborns in southern Stockholm during 12 months (October 2003-June 2004; August 2004-October 2004) were analysed for CMV DNA by TaqMan based real-time PCR. Hearing deficit was assessed by otoacoustic emission (OAE) within a newborn screening programme. 12 infants out of 6060 or 0.2% (95% CI 0.1-0.3%) had congenital CMV infection. One boy among the 12 infected infants had unilateral hearing loss, indicating that the risk of hearing loss is greatly increased (about 20 times) in CMV infected infants. No child developed ocular complications such as chorioretinopathy during 3 y of follow-up. Congenital CMV has an impact on child health but can easily be overlooked due to lack of signs in the neonatal period. Surveillance for congenital CMV is important in addition to programmes for prevention and treatment. 相似文献