63 research outputs found
A multifunctional cotton fabric using TiO2 and PCMs: introducing thermal comfort and self-cleaning properties
The development of materials with multiple functionalities is a market imperative that places new challenges on textile processing. Whatever the application, the goal is always to achieve the best performance with the simplest and most economically attractive process, without forgetting the sustainability issues. The purpose of this study is to establish the conditions to obtain by a simple method a cotton material with comfort, self-cleaning properties and antimicrobial activity. For that, microcapsules of phase change materials (PCMs) and TiO2 nanoparticles (NP) were applied conjugated and resulting fabrics were characterized by infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), contact angle and scanning electron microscopy with X-ray microanalysis (SEM/EDS). The self-cleaning properties of treated fabrics were also analyzed based on the photocatalytic ability of coated fabrics capability to decomposition of methyl orange (MO) under solar simulator irradiation [1] [1]and assessment of degradation of coffee, red wine and curry stains [2]. The comfort properties were assessed according DSC and Alambeta analysis. Moreover, incorporating TiO2 NP in the finishing formulation also was assessment the bacterial inhibition on the treated fabrics.CNPq-Brazil (Conselho Nacional de Desenvolvimento Científico e Tecnológico – Brasil / National Council of Scientific and Technological Development – Brazil) for the doctoral scholarship (233550/2014-3). Programme - COMPETE and by national funds through FCT – Foundation for Science and Technology within the scope of the project POCI-01-0145-FEDER-007136 and Strategic Funding UID/Multi/04423/2013 by FCT and European Regional Development Fund (ERDF), in the framework of the programme PT2020.info:eu-repo/semantics/publishedVersio
Prosthesis–patient mismatch after mitral valve replacement: A pooled meta-analysis of Kaplan–Meier-derived individual patient data
Objective: The hemodynamic effect and early and late survival impact of
prosthesis–patient mismatch (PPM) after mitral valve replacement remains
insufficiently explored.
Methods: Pubmed, Embase, Web of Science, and Cochrane Library databases were
searched for English language original publications. The search yielded 791 potentially relevant studies. The final review and analysis included 19 studies compromising 11,675 patients.
Results: Prosthetic effective orifice area was calculated with the continuity equation
method in 7 (37%), pressure half‐time method in 2 (10%), and partially or fully obtained
from referenced values in 10 (53%) studies. Risk factors for PPM included gender (male),
diabetes mellitus, chronic renal disease, and the use of bioprostheses. When pooling
unadjusted data, PPM was associated with higher perioperative (odds ratio [OR]: 1.66;
95% confidence interval [CI]: 1.32–2.10; p < .001) and late mortality (hazard ratio [HR]:
1.46; 95% CI: 1.21–1.77; p < .001). Moreover, PPM was associated with higher late
mortality when Cox proportional‐hazards regression (HR: 1.97; 95% CI: 1.57–2.47;
p < .001) and propensity score (HR: 1.99; 95% CI: 1.34–2.95; p < .001) adjusted data were
pooled. Contrarily, moderate (HR: 1.01; 95% CI: 0.84–1.22; p = .88) or severe (HR: 1.19;
95% CI: 0.89–1.58; p = .24) PPM were not related to higher late mortality when adjusted
data were pooled individually. PPM was associated with higher systolic pulmonary pressures (mean difference: 7.88 mmHg; 95% CI: 4.72–11.05; p < .001) and less pulmonary
hypertension regression (OR: 5.78; 95% CI: 3.33–10.05; p < .001) late after surgery.
Conclusions: Mitral valve PPM is associated with higher postoperative pulmonary
artery pressure and might impair perioperative and overall survival. The relation
should be further assessed in properly designed studie
Effects and safety of rituximab in systemic sclerosis: An analysis from the European Scleroderma Trial and Research (EUSTAR) group
Objectives: To assess the effects of Rituximab (RTX) on skin and lung fibrosis in patients with systemic sclerosis (SSc) belonging to the European Scleroderma Trial and Research (EUSTAR) cohort and using a nested case-control design. Methods: Inclusion criteria were fulfilment of American College of Rheumatology classification criteria for SSc, treatment with RTX and availability of follow-up data. RTX-treated patients were matched with control patients from the EUSTAR database not treated with RTX. Matching parameters for skin/lung fibrosis were the modified Rodnan Skin Score (mRSS), forced vital capacity (FVC), follow-up duration, scleroderma subtype, disease duration and immunosuppressive co-treatment. The primary analysis was mRSS change from baseline to follow-up in the RTX group compared with the control group. Secondary analyses included change of FVC and safety measures. Results: 63 patients treated with RTX were included in the analysis. The case-control analysis in patients with severe diffuse SSc showed that mRSS changes were larger in the RTX group versus matched controls (N=25; -24.0±5.2% vs-7.7±4.3%; p=0.03). Moreover, in RTX-treated patients, the mean mRSS was significantly reduced at follow-up compared with baseline (26.6±1.4 vs 20.3±1.8; p=0.0001). In addition, in patients with interstitial lung disease, RTX prevented significantly the further decline of FVC compared with matched controls (N=9; 0.4±4.4% vs-7.7±3.6%; p=0.02). Safety measures showed a good profile consistent with previous studies in autoimmune rheumatic diseases. Conclusions: The comparison of RTX treated versus untreated matched-control SSc patients from the EUSTAR cohort demonstrated improvement of skin fibrosis and prevention of worsening lung fibrosis, supporting the therapeutic concept of B cell inhibition in SSc
Composition, Diversity, and Origin of the Bacterial Community in Grass Carp Intestine
Gut microbiota has become an integral component of the host, and received increasing attention. However, for many domestic animals, information on the microbiota is insufficient and more effort should be exerted to manage the gastrointestinal bacterial community. Understanding the factors that influence the composition of microbial community in the host alimentary canal is essential to manage or improve the microbial community composition. In the present study, 16S rRNA gene sequence-based comparisons of the bacterial communities in the grass carp (Ctenopharyngodon idellus) intestinal contents and fish culture-associated environments are performed. The results show that the fish intestinal microbiota harbors many cellulose-decomposing bacteria, including sequences related to Anoxybacillus, Leuconostoc, Clostridium, Actinomyces, and Citrobacter. The most abundant bacterial operational taxonomic units (OTUs) in the grass carp intestinal content are those related to feed digestion. In addition, the potential pathogens and probiotics are important members of the intestinal microbiota. Further analyses show that grass carp intestine holds a core microbiota composed of Proteobacteria, Firmicutes, and Actinobacteria. The comparison analyses reveal that the bacterial community in the intestinal contents is most similar to those from the culture water and sediment. However, feed also plays significant influence on the composition of gut microbiota
Mathematics, capitalism and biosocial research
In my previous work, I criticised studies within the sociopolitical turn for disavowing a comprehension of schools as places of capitalist production. Here, I extend this critique to what is being flagged as a new turn in educational research. I am referring to biosocial research, particularly in the way it is coupled with new materialist and more than human philosophies in the work of Elizabeth de Freitas. I use elements from Marxian theory and Lacanian psychoanalysis to explore the concomitances between mathematics and capitalism, showing how both mathematics and capital need to suture the subject in order to thrive. Biosocial research epitomises this drive towards automation and totality, and, notwithstanding de Freitas’ attempts to rescue it from the logic of control, I will argue that agent-centred intentions dismiss the underlying workings of capital as a real abstraction. I do so by engaging with elements of Deleuze’s philosophy, showing how the more than human frame in which de Freitas’ biosocial research rests contradicts her own perception of how biosocial research can be rescued for inclusive purposes
Enthesitis in a European registry-based cohort of patients with psoriatic arthritis treated with tumour necrosis factor inhibitors: clinical burden, patient-reported outcomes, and treatment response.
OBJECTIVE
To explore the registration of enthesitis among biologic-naïve patients with psoriatic arthritis (PsA) initiating tumour necrosis factor inhibitor (TNFi) treatment across 12 European registries, compare the disease burden and patient-reported outcomes (PROs) between patients with and without enthesitis, and assess the enthesitis treatment response.
METHOD
Demographics, clinical characteristics, and PROs at first TNFi (TNFi-1) initiation (baseline) were assessed in patients with PsA, diagnosed by a rheumatologist, with versus without assessment of entheses and between those with versus without enthesitis. Enthesitis scores and resolution frequency were identified at follow-up.
RESULTS
Of 10 547 patients in the European Spondyloarthritis (EuroSpA) Research Collaboration Network initiating TNFi, 1357 underwent evaluation for enthesitis. Eight registries included a validated scoring system for enthesitis. At baseline, 874 patients underwent entheses assessment [Maastricht Ankylosing Spondylitis Enthesitis Score (MASES) 485 patients, Spondyloarthritis Research Consortium of Canada (SPARCC) 389 patients]. Enthesitis was detected by MASES in 170/485 (35%, mean score ± sd 3.1 ± 2.4) and by SPARCC in 236/389 (61%, 4 ± 3.4). Achilles enthesitis was most frequent, by both MASES (unilateral/bilateral 28%/9%) and SPARCC (48%/18%). MASES/SPARCC baseline and follow-up scores for TNFi-1 were available for 100/105 patients. Of these, 63 patients (63%) (MASES) and 46 (43.8%) (SPARCC) achieved resolution of enthesitis. The site-specific enthesitis resolution was overall lower at SPARCC sites (peripheral; 63-80%) than at MASES sites (mainly axial; 82-100%) following TNFi-1. Disease activity and PROs were worse in patients with versus without enthesitis.
CONCLUSION
Entheseal assessments are only registered in a minority of patients with PsA in routine care. When assessed, enthesitis was common, and a substantial proportion demonstrated resolution following treatment with TNFi-1
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