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  • 1.
    Aune, E
    et al.
    Univ Gothenburg, Inst Med, Gothenburg, Sweden.
    McMurray, J
    Univ Glasgow, British Heart Fdn BHF Cardiovasc Res Ctr, Glasgow, Lanark, Scotland.
    Lundgren, P
    Univ Gothenburg, Inst Med, Gothenburg, Sweden.
    Sattar, N
    Univ Glasgow, British Heart Fdn BHF Cardiovasc Res Ctr, Glasgow, Lanark, Scotland.
    Israelsson, J
    Kalmar Cty Hosp, Reg Kalmar Cty, Div Cardiol, Dept Internal Med, Kalmar, Sweden.
    Nordberg, P
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Herlitz, Johan
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd.
    Rawshani, A
    Univ Gothenburg, Inst Med, Gothenburg, Sweden; Swedish Registry Cardiopulm Resuscitat, Gothenburg, Sweden.
    Clinical characteristics and survival in patients with heart failure experiencing in hospital cardiac arrest2022Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In patients with heart failure (HF) who suffered in-hospital cardiac arrest (IHCA), little is known about the characteristics, survival and neurological outcome. We used the Swedish Registry of Cardiopulmonary Resuscitation to study this, including patients aged >= 18 years suffering IHCA (2008-2019), categorised as HF alone, HF with acute myocardial infarction (AMI), AMI alone, or other. Odds ratios (OR) for 30-day survival, trends in 30-day survival, and the implication of HF phenotype was studied. 6378 patients had HF alone, 2111 had HF with AMI, 4210 had AMI alone. Crude 5-year survival was 9.6% for HF alone, 12.9% for HF with AMI and 34.6% for AMI alone. The 5-year survival was 7.9% for patients with HF and left ventricular ejection fraction (LVEF) >= 50%, 15.4% for LVEF < 40% and 12.3% for LVEF 40-49%. Compared with AMI alone, adjusted OR (95% CI) for 30-day survival was 0.66 (0.60-0.74) for HF alone, and 0.49 (0.43-0.57) for HF with AMI. OR for 30-day survival in 2017-2019 compared with 2008-2010 were 1.55 (1.24-1.93) for AMI alone, 1.37 (1.00-1.87) for HF with AMI and 1.30 (1.07-1.58) for HF alone. Survivors with HF had good neurological outcome in 92% of cases.

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    fulltext
  • 2.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Author Correction: Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity2022Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikkel-id 21758Artikkel i tidsskrift (Annet vitenskapelig)
  • 3.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity2019Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 9, nr 18252Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Inkjet printing of enzymes can facilitate many novel applications where a small amount of materials need to be deposited in a precise and flexible manner. However, maintaining the satisfactory activity of inkjet printed enzyme is a challenging task due to the requirements of ink rheology and printhead parameters. Thus to find optimum inkjetting conditions we studied the effects of several ink formulation and jetting parameters on lysozyme activity using a piezoelectric printhead. Within linear activity range of protein concentrations ink containing 50 µg/mL lysozyme showed a satisfactory activity retention of 85%. An acceptable activity of jetted ink was found at pH 6.2 and ionic strength of 0.06 molar. Glycerol was found to be an effective viscosity modifier (10–15 mPa.s), humectant and protein structure stabilizer for the prepared ink. A non-ionic surfactant when used just below critical micelle concentration was found to be favourable for the jetted inks. An increase in activity retention was observed for inks jetted after 24 hours of room temperature incubation. However, no additional activity was seen for inkjetting above the room temperature. Findings of this study would be useful for formulating other protein-based inks and setting their inkjet printing parameters without highly compromising the functionality.

    Fulltekst (pdf)
    fulltext
  • 4.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Piezoelectric inkjet printing of tyrosinase (polyphenol oxidase) enzyme on atmospheric plasma treated polyamide fabric2022Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikkel-id 6828Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Tyrosinase enzyme was digitally printed on plasma pretreated polyamide-6,6 fabric using several sustainable technologies. Ink containing carboxymethyl cellulose was found to be the most suitable viscosity modifier for this enzyme. Before and after being deposited on the fabric surface, the printed inks retained enzyme activity of 69% and 60%, respectively, compared to activity prior printing process. A good number of the printed enzyme was found to be strongly adsorbed on the fabric surface even after several rinsing cycles due to surface activation by plasma treatment. Rinsed out fabrics retained a maximum activity of 34% resulting from the well-adsorbed enzymes. The activity of tyrosinase on printed fabrics was more stable than ink solution for at least 60 days. Effects of pH, temperature and enzyme kinetics on ink solution and printed fabrics were assessed. Tyrosinase printed synthetic fabrics can be utilized for a range of applications from biosensing and wastewater treatment to cultural heritage works.

    Fulltekst (pdf)
    fulltext
  • 5.
    Blom, Eva-Lotta
    et al.
    University of Gothenburg.
    Kvarnemo, Charlotta
    University of Gothenburg.
    Dekhla, Isabelle
    University of Gothenburg.
    Schöld, Sofie
    University of Gothenburg.
    Andersson, Mathias H.
    Swedish Defence Research Agency.
    Svensson, Ola
    Södertörns högskola, Matematikens didaktik.
    Amorim, M Clara P
    ISPA-Instituto Universitário, Lisboa, Portugal; Universidade de Lisboa, Lisboa, Portugal.
    Continuous but not intermittent noise has a negative impact on mating success in a marine fish with paternal care2019Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 9, nr 1, artikkel-id 5494Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Anthropogenic underwater noise is a global pollutant of increasing concern but its impact on reproduction in fish is largely unknown. Hence, a better understanding of its consequences for this important link to fitness is crucial. Working in aquaria, we experimentally tested the impact of broadband noise exposure (added either continuously or intermittently), compared to a control, on the behaviour and reproductive success of the common goby (Pomatoschistus microps), a vocal fish with exclusive paternal care. Compared to the intermittent noise and control treatments, the continuous noise treatment increased latency to female nest inspection and spawning and decreased spawning probability. In contrast, many other female and male pre-spawning behaviours, and female ventilation rate (proxies for stress levels) did not differ among treatments. Therefore, it is likely that female spawning decisions were delayed by a reduced ability to assess male acoustic signals, rather than due to stress per se and that the silent periods in the intermittent noise treatment provided a respite where the females could assess the males. Taken together, we show that noise (of similar frequency range as anthropogenic boat noise) negatively affects reproductive success, particularly under a continuous noise exposure.

    Fulltekst (pdf)
    FULLTEXT01
  • 6.
    Cruz, Maria Araceli Diaz
    et al.
    Research School of Health and Welfare, School of Health and Welfare, University of Jönköping, Jönköping, Sweden.
    Ulfenborg, Benjamin
    Department of Biology and Bioinformatics, School of Bioscience, University of Skövde, Skövde, Sweden.
    Blomstrand, Peter
    Department of Natural Science and Biomedicine, School of Health and Welfare, Jönköping University, Jönköping, Sweden; Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden; Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
    Faresjö, Maria
    Department of Biology and Biology Engineering, Chalmers University of Technology, Gothenburg, Sweden.
    Ståhl, Fredrik
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd.
    Karlsson, Sandra
    Department of Natural Science and Biomedicine, School of Health and Welfare, Jönköping University, Jönköping, Sweden.
    Characterization of methylation patterns associated with lifestyle factors and vitamin D supplementation in a healthy elderly cohort from Southwest Sweden2022Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikkel-id 12670Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Numerous studies have shown that lifestyle factors, such as regular physical activity and vitamin D intake, may remarkably improve overall health and mental wellbeing. This is especially important in older adults whose vitamin D deficiency occurs with a high prevalence. This study aimed to examine the influence of lifestyle and vitamin D on global DNA methylation patterns in an elderly cohort in Southwest of Sweden. We also sought to examine the methylation levels of specific genes involved in vitamin D's molecular and metabolic activated pathways. We performed a genome wide methylation analysis, using Illumina Infinium DNA Methylation EPIC 850kBeadChip array, on 277 healthy individuals from Southwest Sweden at the age of 70–95. The study participants also answered queries on lifestyle, vitamin intake, heart medication, and estimated health. Vitamin D intake did not in general affect methylation patterns, which is in concert with other studies. However, when comparing the group of individuals taking vitamin supplements, including vitamin D, with those not taking supplements, a difference in methylation in the solute carrier family 25 (SCL25A24) gene was found. This confirms a previous finding, where changes in expression of SLC25A24 were associated with vitamin D treatment in human monocytes. The combination of vitamin D intake and high physical activity increased methylation of genes linked to regulation of vitamin D receptor pathway, the Wnt pathway and general cancer processes. To our knowledge, this is the first study detecting epigenetic markers associated with the combined effects of vitamin D supplementation and high physical activity. These results deserve to be further investigated in an extended, interventional study cohort, where also the levels of 25(OH)D3 can be monitored.

    Fulltekst (pdf)
    fulltext
  • 7.
    Dejby, Ellen
    et al.
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden.
    Bhatt, Deepak L
    Mount Sinai Heart, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
    Skoglund, Kristofer
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden; The Swedish Cardiopulmonary Resuscitation Registry, Centre of Registries, Västra Götaland, Gothenburg, Sweden.
    Rawshani, Aidin
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden; The Swedish Cardiopulmonary Resuscitation Registry, Centre of Registries, Västra Götaland, Gothenburg, Sweden.
    Omerovic, Elmir
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden.
    Redfors, Björn
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden; Clinical Trial Center, Cardiovascular Research Foundation, New York, NY, USA; Department of Cardiology, New York-Presbyterian Hospital/Columbia University Medical Center, New York, USA.
    Myredal, Anna
    Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden.
    Petursson, Petur
    Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden.
    Angerås, Oskar
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden.
    Gustafsson, Arvid
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden.
    Isaksén, Daniella
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden.
    Herlitz, Johan
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden.
    Rawshani, Araz
    Department of Molecular and Clinical Medicine, University of Gothenburg, Institute of Medicine, Gothenburg, Sweden; Department of Cardiology, The Sahlgrenska University Hospital, Gothenburg, Sweden; The Swedish Cardiopulmonary Resuscitation Registry, Centre of Registries, Västra Götaland, Gothenburg, Sweden.
    Left-sided valvular heart disease and survival in out-of-hospital cardiac arrest: a nationwide registry-based study.2023Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 13, artikkel-id 12662Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Survival in left-sided valvular heart disease (VHD; aortic stenosis [AS], aortic regurgitation [AR], mitral stenosis [MS], mitral regurgitation [MR]) in out-of-hospital cardiac arrest (OHCA) is unknown. We studied all cases of OHCA in the Swedish Registry for Cardiopulmonary Resuscitation. All degrees of VHD, diagnosed prior to OHCA, were included. Association between VHD and survival was studied using logistic regression, gradient boosting and Cox regression. We studied time to cardiac arrest, comorbidities, survival, and cerebral performance category (CPC) score. We included 55,615 patients; 1948 with AS (3,5%), 384 AR (0,7%), 17 MS (0,03%), and 704 with MR (1,3%). Patients with MS were not described due to low case number. Time from VHD diagnosis to cardiac arrest was 3.7 years in AS, 4.5 years in AR and 4.1 years in MR. ROSC occurred in 28% with AS, 33% with AR, 36% with MR and 35% without VHD. Survival at 30 days was 5.2%, 10.4%, 9.2%, 11.4% in AS, AR, MR and without VHD, respectively. There were no survivors in people with AS presenting with asystole or PEA. CPC scores did not differ in those with VHD compared with no VHD. Odds ratio (OR) for MR and AR showed no difference in survival, while AS displayed OR 0.58 (95% CI 0.46-0.72), vs no VHD. AS is associated with halved survival in OHCA, while AR and MR do not affect survival. Survivors with AS have neurological outcomes comparable to patients without VHD.

    Fulltekst (pdf)
    fulltext
  • 8.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Cayla, Aurelie
    ENSAIT/GEMTEX.
    Campagne, Christine
    ENSAIT/GEMTEX.
    Zeng, Xianyi
    ENSAIT/GEMTEX.
    Chen, Yan
    University of Soochow.
    Guan, Jinping
    University of Soochow.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Stress, strain and deformation of poly-lactic acid filament deposited onto polyethylene terephthalate woven fabric through 3D printing process2019Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 9, artikkel-id 14333Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Although direct deposition of polymeric materials onto textiles through 3D printing is a great technique used more and more to develop smart textiles, one of the main challenges is to demonstrate equal or better mechanical resistance, durability and comfort than those of the textile substrates before deposition process. This article focuses on studying the impact of the textile properties and printing platform temperature on the tensile and deformations of non-conductive and conductive poly lactic acid (PLA) filaments deposited onto polyethylene terephthalate (PET) textiles through 3D printing process and optimizing them using theoretical and statistical models. The results demonstrate that the deposition process affects the tensile properties of the printed textile in comparison with the ones of the textiles. The stress and strain at rupture of the first 3D printed PLA layer deposited onto PET textile material reveal to be a combination of those of the printed layer and the PET fabric due to the lower flexibility and diffusion of the polymeric printed track through the textile fabric leading to a weak adhesion at the polymer/textile interface. Besides, printing platform temperature and textile properties influence the tensile and deformation properties of the 3D printed PLA on PET textile significantly. Both, the washing process and the incorporation of conductive fillers into the PLA do not affect the tensile properties of the extruded polymeric materials. The elastic, total and permanent deformations of the 3D-printed PLA on PET fabrics are lower than the ones of the fabric before polymer deposition which demonstrates a better dimensional stability, higher stiffness and lower flexibility of these materials.

    Fulltekst (pdf)
    fulltext
  • 9.
    Gunnarsson, Emanuel
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Rödby, Kristian
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Seoane, Fernando
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Seamlessly integrated textile electrodes and conductive routing in a garment for electrostimulation: design, manufacturing and evaluation2023Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 13, artikkel-id 17408Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Electro-stimulation to alleviate spasticity, pain and to increase mobility has been used successfully for years. Usually, gelled electrodes are used for this. In a garment intended for repeated use such electrodes must be replaced. The Mollii-suit by the company Inerventions utilises dry conductive rubber electrodes. The electrodes work satisfactory, but the garment is cumbersome to fit on the body. In this paper we show that knitted dry electrodes can be used instead. The knitted electrodes present a lower friction against the skin and a garment is easily fitted to the body. The fabric is stretchable and provides a tight fit to the body ensuring electrical contact. We present three candidate textrodes and show how we choose the one with most favourable features for producing the garment. We validate the performance of the garment by measuring three electrical parameters: rise time (10–90%) of the applied voltage, net injected charge and the low frequency value of the skin–electrode impedance. It is concluded that the use of flat knitting intarsia technique can produce a garment with seamlessly integrated conductive leads and electrodes and that this garment delivers energy to the body as targeted and is beneficial from manufacturing and comfort perspectives.

    Fulltekst (pdf)
    fulltext
  • 10.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. University of Borås.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    ENSAIT.
    Guan, Jinping
    Soochow university.
    Chen, Guoqiang
    Soochow university.
    Study of photoluminescence property on cellulosic fabric using multifunctional biomaterials riboflavin and its derivative Flavin mononucleotide2019Inngår i: Scientific Reports, E-ISSN 2045-2322, nr 9, artikkel-id 8696Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Flavins are ubiquitous in nature and participate in various biochemical reactions mainly in the form of coenzyme Flavin mononucleotide (FMN) or as precursor such as Riboflavin (RF). Both flavins, RF and FMN are multifunctional bio-based molecules yielding yellow coloration and exhibit photoluminescence, UV protection, and redox properties. The aim of the present research study was to investigate the diffusion method as a technique to obtain photoluminescent cellulosic fabric using multifunctional RF and FMN. The photoluminescent moiety RF and FMN exhibited three maximum absorbance peaks at about 270 nm, 370 nm and 446 nm in aqueous solution at pH 7. The solutions of RF and FMN with concentration 4% and 20% (owf) at pH 7 were prepared and used in diffusion method for cellulosic fabric dyeing. The study involved the determination of color performance and evaluation of luminescence property of the dyed fabric using UV-visible spectrophotometer and photoluminescence spectroscopy, respectively. Under monochromatic UV lamp exposure emitting at 370 nm, the dyed fabric showed an intense emission of greenish yellow color, which was later confirmed by the intense photoluminescence observed at a wavelength of about 570 nm. The study demonstrates the theoretical evaluation of quantum efficiency (φ) obtaining maximum φ value of 0.28. Higher color strength value and improved wash fastness were obtained by treatment with different biobased mordants such as tannic acid and citric acid as well as calcium chloride for both RF and FMN. Additionally, ultraviolet (UV) protection ability for both RF and FMN dyed fabric were determined and showed UPF factor of 50+ and 35 respectively. The work allowed us to explore the photoluminescence property of riboflavin and Flavin mononucleotide for its application in the field of textiles as a new scope of producing photoluminescent textile along with multifunctional properties such as coloration and UV protection.

    Fulltekst (pdf)
    fulltext
  • 11.
    Morshed, Mohammad Neaz
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    Bouazizi, Nabil
    Guan, Jinping
    Soochow University.
    Chen, Guoqiang
    Soochow University.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Surface modification of polyester fabric using plasma-dendrimer for robust immobilization of glucose oxidase enzyme2019Inngår i: Scientific Reports, E-ISSN 2045-2322, artikkel-id 15730Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Robust immobilization of glucose oxidase (GOx) enzyme was achieved on poly(ethylene terephthalate) nonwoven fabric (PN) after integration of favourable surface functional groups through plasma treatments [atmospheric pressure-AP or cold remote plasma-CRP (N2 + O2)] and/or chemical grafting of hyperbranched dendrimers [poly-(ethylene glycol)-OH or poly-(amidoamine)]. Absorption, stability, catalytic behavior of immobilized enzymes and reusability of resultant fibrous bio-catalysts were comparatively studied. Full characterization of PN before and after respective modifications was carried out by various analytical, instrumental and arithmetic techniques. Results showed that modified polyester having amine terminal functional groups pledged better surface property providing up to 31% enzyme loading, and 81% active immobilized enzymes. The activity of the enzyme was measured in terms of interaction aptitude of GOx in a given time to produce hydrogen peroxide using colorimetric assay. The immobilized GOx retained 50% of its original activity after being reused six (06) times and exhibited improved stability compared with the free enzyme in relation to temperature. The reaction kinetics, loading efficiency, leaching, and reusability analysis of enzyme allowed drawing a parallel to the type of organic moiety integrated during GOx immobilization. In addition, resultant fibrous bio-catalysts showed substantial antibacterial activity against pathogenic bacteria strains (Staphylococcus epidermidis and Escherichia coli) in the presence of oxygen and glucose. These results are of great importance because they provide proof-of-concept for robust immobilization of enzymes on surface-modified fibrous polyester fabric for potential bio-industrial applications.

    Fulltekst (pdf)
    fulltext
  • 12.
    Morshed, Mohammad Neaz
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Pervez, Md Nahid
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    Högskolan i Borås, Verksamhetsstöd.
    Bouazizi, Nabil
    Guan, Jinping
    Soochow University.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Statistical modelingand optimization of heterogeneousFenton‑like removal of organicpollutant using fibrous catalysts: a full factorial design2020Inngår i: Scientific Reports, E-ISSN 2045-2322, artikkel-id 16133Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This work focuses on the optimization of heterogeneous Fenton-like removal of organic pollutant (dye) from water using newly developed fibrous catalysts based on a full factorial experimental design. This study aims to approximate the feasibility of heterogeneous Fenton-like removal process and optionally make predictions from this approximation in a form of statistical modeling. The fibrous catalysts were prepared by dispersing zerovalent iron nanoparticles on polyester fabrics (PET) before and after incorporation of either polyamidoamine (PAMAM, –NH2) dendrimer, 3-(aminopropyl) triethoxysilane (APTES, –Si–NH2) or thioglycerol (SH). The individual effect of two main factors [pH (X1) and concentration of hydrogen peroxide-[H2O2]μl (X2)] and their interactional effects on the removal process was determined at 95% confidence level by an L27 design. The results indicated that increasing the pH over 5 decreases the dye removal efficiency whereas the rise in [H2O2]μl until equilibrium point increases it. The principal effect of the type of catalysts (PET–NH2–Fe, PET–Si–NH2–Fe, and PET–SH–Fe) did not show any statistical significance. The factorial experiments demonstrated the existence of a significant synergistic interaction effect between the pH and [H2O2]μl as expressed by the values of the coefficient of interactions and analysis of variance (ANOVA). Finally, the functionalization of the resultant fibrous catalysts was validated by electrokinetic and X-ray photoelectron spectroscopy analysis. The optimization made from this study are of great importance for rational design and scaling up of fibrous catalyst for green chemistry and environmental applications.

    Fulltekst (pdf)
    fulltext
  • 13.
    Mulder, Roos
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Morshed, Mohammad Neaz
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Seipel, Sina
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Norén, Ulrika
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Niit, Ellinor
    Imogo AB, 216 16 Limhamn, Sweden.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Study on hydraulic spray atomizing system as a new resource-efficient dyeing-finishing method for wool fabric2022Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikkel-id 21814Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This study introduces hydraulic spray (HS) atomizing system as new resource-efficient continuous dyeing-finishing method for wool fabric. Here, wool fabric was dyed and finished by using commercial dyes and finishes through either one-step or two-steps HS method. Results obtained from color strength (K/S), color difference (ΔECMC) and color fastness analysis presented the apprehension of HS method in dyeing of wool fabric with different GSM and dyes. Finishing performance of wool fabric was measured through water contact angle analysis. Analysis shows that, the finishing performance of HS method were substantial to reach water contact angle as high as 145° while maintaining high fastness to wash and abrasion. Between one-step and two-steps HS method, one-step method showed better performance with high resource efficiency compared to two-steps method. Results from statistical analysis shows no statistical significance of fabric weight, type of dyes, and finishes to the performance of new HS method which is crucial for true-scale industrial implementation and scaling up of this process. The findings of this report are of great importance as it presents a greener alternative to the conventional resource-intensive dyeing-finishing methods of wool fabric.

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  • 14.
    Seipel, Sina
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Effect of physical parameters and temperature on the piezo-electric jetting behaviour of UV-curable photochromic inks2020Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 10, s. 18841-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Although resource-efficient processes like inkjet printing have a large potential to foster the development of smart and functional textiles, one bottleneck still is the development of functional inks. To make inkjet printing and UV curing given production techniques for smart and functional specialty products, e.g. photochromic textiles, deepened knowledge about the development, rheological behavior and jetting behavior of functional ink is needed. This paper focuses on the formulation and performance of UV-responsive and UV-curable inkjet inks, which are based on photochromic dyes and their application to produce UV-responsive textiles. Two commercial photochromic dyes—Reversacol Ruby Red (RR) and Sea Green (SG), which represent dyes of the naphthopyran and spirooxazine class, respectively, have been used to develop the inks. The photochromic inks are characterized according to their physical–chemical and rheological properties in respect to temperature. The influence of temperature on the drop formation of the inks in an industrial print head is analyzed using a high-speed camera, which reveals important information regarding challenges in ink jettability. It was found that the dye structure and type used in the ink can influence the jetting behavior of photochromic UV-curable ink. More pronounced temperature sensitivity of dyes can increase the temperature-related effects of drop formation as was observed for SG ink. The printability of the RR and SG inks is framed and underpinned by theoretical calculations of the Z number. Discrepancies are observed and discussed between existing theory of ink jettability and visual evaluation of the photochromic ink.

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    fulltext
  • 15.
    Wennman, Ingela
    et al.
    Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, 405 45, Gothenburg, Sweden; Gothenburg Emergency Medicine Research Group (GEMREG), Sahlgrenska University Hospital, Gothenburg, Region Västra Götaland, Sweden.
    Wijk, Helle
    Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, 405 45, Gothenburg, Sweden; Gothenburg Emergency Medicine Research Group (GEMREG), Sahlgrenska University Hospital, Gothenburg, Region Västra Götaland, Sweden.
    Jood, Katarina
    Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, at the University of Gothenburg, Gothenburg, Sweden; Department of Neurology, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden.
    Carlström, Eric
    Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, 405 45, Gothenburg, Sweden; Gothenburg Emergency Medicine Research Group (GEMREG), Sahlgrenska University Hospital, Gothenburg, Region Västra Götaland, Sweden.
    Fridlund, Bengt
    Centre for Interprofessional Collaboration Within Emergency Care (CICE), Linnaeus University, Växjö, Sweden.
    Alsholm, Linda
    Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, at the University of Gothenburg, Gothenburg, Sweden.
    Herlitz, Johan
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd.
    Hansson, Per-Olof
    Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Medicine, Geriatrics and Emergency Medicine, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden.
    Fast track to stroke unit for patients not eligible for acute intervention, a case-control register study on 1066 patients.2023Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 13, artikkel-id 20799Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Stroke patients not eligible for acute intervention often have low priority and may spend long time at the emergency department (ED) waiting for admission. The aim of this retrospective case-control register study was to evaluate outcomes for such "low priority" stroke patients who were transported via Fast Track directly to the stroke unit, according to pre-specified criteria by emergency medical service (EMS). The outcomes of Fast Track patients, transported directly to stroke unit (cases) were compared with the outcomes of patients who fulfilled these critera for Fast Track, but instead were transported to the ED (controls). In all, 557 cases and 509 controls were identified. The latter spent a mean time of 237 min in the ED before admission. The 90-day mortality rate was 12.9% for cases and 14.7% for controls (n.s.). None of the secondary outcome events differed significantly between the groups: 28-day mortality rate; death rate during hospitalisation; proportion of pneumonias, falls or pressure ulcers; or health-related outcomes according to the EQ-5D-5L questionnaire. These findings indicates that the Fast Track to the stroke unit by an EMS is safe for selected stroke patients and could avoid non-valuable time in the ED.

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