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Fabrication and optimization of stable, optically transparent, and reusable ph-responsive silk membranes

The fabrication of silk-based membranes that are stable, optically transparent and reusable is yet to be achieved. To address this bottleneck we have developed a method to produce transparent chromogenic silk patches that are optically responsive to pH. The patches were produced by blending regenerated silk fibroin (RSF), Laponite RD (nano clay) and the organic dyes neutral red and Thionine acetat

A review of contamination of surface-, ground-, and drinking water in Sweden by perfluoroalkyl and polyfluoroalkyl substances (PFASs)

Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are found in aquatic systems, flora, and fauna worldwide. These potentially harmful compounds are also frequently detected in Sweden and have already resulted in severe problems for public drinking water supply, i.e., some wells had to be closed due to high PFAS concentrations both in raw water and produced drinking water. Knowledge on PFAS occ

Rheumatoid arthritis phenotype at presentation differs depending on the number of autoantibodies present

Objectives In rheumatoid arthritis (RA), seropositive and seronegative disease may be two entities with different underlying pathophysiological mechanisms, long-term outcomes and disease presentations. However, the effect of the conjoint presence of multiple autoantibodies, as proxy for a more pronounced humoral autoimmune response, on clinical phenotype remains unclear. Therefore, this study inve

Perceived ability to perform daily hand activities after stroke and associated factors : A cross-sectional study

Background: Despite that disability of the upper extremity is common after stroke, there is limited knowledge how it influences self-perceived ability to perform daily hand activities. The aim of this study was to describe which daily hand activities that persons with mild to moderate impairments of the upper extremity after stroke perceive difficult to perform and to evaluate how several potentia

Short-term fluctuations in air pollution and asthma in Scania, Sweden. Is the association modified by long-term concentrations?

Background and aims: Asthma is one of the most common respiratory diseases in the world. Research has shown that temporal increases in air pollution concentrations can aggravate asthma symptoms. The aim of this study was to assess whether individuals living in areas with higher air pollution concentrations responded differently to short-term temporal exposure to air pollution than those living in

Stretching the boundaries : Tanzanian pharmacy workers' views and experiences of providing STI services for men who have sex with men

Objective: To explore the views and experiences of providing assistance and treatment of sexually transmitted infections to same-sex practicing male clients among service providers at pharmacies and drugstores in Dar es Salaam, Tanzania. Previous research suggests that sexually transmitted infections are an increasing concern for this population. Due to stigma and discrimination, men who have sex

Optimal Segmentation for Piecewise RF Power Amplifier Models

Accurate modeling of an RF power amplifier and/or its inverse is the core element of every digital predistortion system. An interesting alternative to the family of classic polynomial models are piecewise models, which divide the magnitude range into segments and define gain/phase-distortion through complex-valued functions on a per-segment basis. Naturally, the question arises whether a well-chos

Reference measurement procedure for CSF amyloid beta (Aβ)1–42 and the CSF Aβ1–42/Aβ1–40 ratio – a cross-validation study against amyloid PET

A clinical diagnosis of Alzheimer's disease is currently made on the basis of results from cognitive tests in combination with medical history and general clinical evaluation, but the peptide amyloid-beta (Aβ) in cerebrospinal fluid (CSF) is increasingly used as a biomarker for amyloid pathology in clinical trials and in recently proposed revised clinical criteria for Alzheimer's disease. Recent a

Genetic mapping of the barley lodging resistance locus Erectoides-k

The barley (Hordeum vulgare L.) mutant erectoides-k.32 (ert-k.32) was isolated in 1947 from an X-ray-mutant population of cultivar ‘Bonus’. The mutant was released as a cultivar in 1958 with the name ‘Pallas’ – one of the first cereal crop cultivars developed from induced mutants. ‘Pallas’ is a semi-dwarf barley cultivar known for its culm stability and resistance to lodging. In total, eight allel

The body image and relationship scale : A Swedish translation, cultural adaptation, and reliability and validity testing

Purpose. Testing a newly developed Swedish version of the Body Image and Relationship Scale (BIRS) for test-retest reliability, convergent validity and inter-item analysis in a Swedish context for breast cancer survivors. Methods. A Swedish BIRS version, translation involving the input of experts and breast cancer survivors, with 41 items (BIRS-S) and the Short Form 36 (SF-36) were sent to a sampl

The role of Additive Manufacturing technology in job creation : An exploratory case study of suppliers of Additive Manufacturing in Sweden

This paper investigates how Additive Manufacturing (AM) technologies, as a process innovation, may contribute to a job creation. Further, the various mechanisms in which AM may contribute to an increase in job creation as well as the types of jobs are analyzed. The analysis also goes beyond AM technologies and incorporates other non-technological factors which foster job creation, i.e. higher wage

Exploring the diabetic kidney proteome : A junction of tissue and serum

Diabetic kidney disease is one of the major complications associated with diabetes. Approximately 25-40% of both type 1 and type 2 diabetes patients will acquire a kidney complication and despite global efforts to reduce the prevalence of diabetic kidney disease, it is a leading cause of kidney failure in the western world. There are few treatment options directly targeting the kidney.The overall

Supporting Semantic Capture during Kinesthetic Teaching of Collaborative Industrial Robots

Industrial robot systems being deployed today do not contain domain knowledge to aid robot operators in setup and operational use. To gather such knowledge in a robot context requires mechanisms for entering and capturing semantic data, that will gradually build a working vocabulary while interacting with environment and operators, for bootstrapping system knowledge and ensuring data collection ov

Catalytic C-H oxidations by nonheme mononuclear Fe(II) complexes of two pentadentate ligands: Evidence for an Fe(IV) oxo intermediate

The oxidation reactions of alkanes with hydrogen peroxide and peracids (peracetic acid (PAA) and m-chloroperoxybenzoic acid (mCPBA)) catalysed by two Fe(II) complexes of pentadentate {N5}-donor ligands have been investigated. Kinetic isotope effect experiments and the use of other mechanistic probes have also been performed. While the total yields of oxidized products are similar regardless of oxi

Expression of tomato thymidine kinase 1 by means of the baculovirus expression vector system

Tomato thymidine kinase 1 (ToTK1) is a deoxyribonucleoside kinase (dNK) that has been subject to study because of its potential to phosphorylate the nucleoside analogue 3-azido-2,3-dideoxythymidine (azidothymidine, AZT) equally well as its natural substrate thymidine (dThd). The combination of ToTK1 and AZT has been tested in two animal studies for its efficiency and use in suicide gene therapy fo

Quality-of-life after bile duct injury : intraoperative detection is crucial. A national case-control study

Background Existing reports on quality-of-life (QoL) after bile duct injury (BDI) are conflicting. Methods Case-control study were QoL assessment was performed using SF-36 (36-item short Form health survey). Patients with BDI were compared to a matched control group (1:2) subject to cholecystectomy. Results In total 168 BDIs (0.3%) were eligible for participation and 64% returned SF-36. Median fol