8,099 results match your criteria: "Chalmers University of Technology.[Affiliation]"

Understanding Healthcare Design Transformations. Insights from the Swedish Experience.

Stud Health Technol Inform

November 2024

Chalmers University of Technology, Department of Architecture and Civil Engineering, Centre for Healthcare Architecture, Sweden.

In Europe, most countries are facing common healthcare challenges that lead to a need for innovation, effectiveness and efficiency in the healthcare systems. This is often addressed through actions and intentions including enhanced primary and integrated care. However, these developments seem to be progressing slowly and non-uniformly, nor is there knowledge exchange, and the full implications of these changes on healthcare design are still unfolding.

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In professional interactive practices, space, time, human bodies, and material objects as well as written and oral language are dynamically implicated in a multimodal co-construction of meaning. A healthcare space - an operating room - is a typical example of such a social-semiotic, multimodal arrangement of communication modes which impacts the practices that are played out therein. Therefore, in designing healthcare spaces, it is important to allow for proactive inclusion and engagement of the categories of professionals who carry out their daily work in these spaces.

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Introduction: Intraamniotic infection (IAI) is one of the main possible complications of preterm prelabor rupture of membranes (PPROM) and can lead to severe consequences for the neonate, such as early onset neonatal sepsis (EONS). Available diagnostic tools for IAI have poor diagnostic performance, which may result in both over- and underdiagnoses of IAI. In a search for better diagnostic tools, we have examined short-term variation (STV) in fetal heart rate.

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Environmental concentrations of the fungicide tebuconazole alter microbial biodiversity and trigger biofilm-released transformation products.

Chemosphere

December 2024

Department of Biological and Environmental Sciences, Centre for Future Chemical Risk Assessment and Management Strategies (FRAM) and Gothenburg Global Biodiversity Center (GGBC), University of Gothenburg, Gothenburg, Sweden. Electronic address:

Article Synopsis
  • * Researchers used RNA metabarcoding and HPLC-MS methods to analyze changes in fungal, bacterial, and algal biomass in stream biofilms exposed to both chronic and acute tebuconazole conditions.
  • * Results showed a significant decrease in fungal biomass with chronic exposure, indicating some potential biotransformation of tebuconazole in biofilms, while bacterial and algal biomass remained stable; however, the composition of microbial communities shifted, favoring more tolerant taxa over sensitive ones.
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Model-assisted CRISPRi/a library screening reveals central carbon metabolic targets for enhanced recombinant protein production in yeast.

Metab Eng

November 2024

Division of Systems and Synthetic Biology, Department of Life Sciences, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden; Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark. Electronic address:

Article Synopsis
  • The production of recombinant proteins is crucial for advancements in biomedicine and industrial biotechnology, but traditional metabolic engineering faces challenges due to the complexity of protein secretion pathways.
  • A proteome-constrained genome-scale model (pcSecYeast) was developed to simulate and enhance α-amylase production in yeast, leading to the identification of specific gene targets for regulation through CRISPR techniques.
  • The study successfully validated predictions by showing that adjusting the expression of key genes increased carbon flux and improved production, demonstrating the potential of model-based approaches in protein engineering.
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Association of the glucose patterns after a single nonstandardized meal with the habitual diet composition and features of the daily glucose profile in individuals without diabetes.

Am J Clin Nutr

November 2024

Division of Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden; Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Background: The postprandial glucose response (PPGR), contributing to the glycemic variability (GV), is positively associated with cardiovascular disease risk in people without diabetes, and can thus represent a target for cardiometabolic prevention strategies.

Objectives: The study aimed to distinguish patterns of PPGR after a single nonstandardized meal and to evaluate their relationship with the habitual diet and the daily glucose profile (DGP) in individuals at high-cardiometabolic risk.

Methods: Baseline 4-d continuous glucose monitoring was performed in 159 adults recruited in the MEDGI-Carb trial.

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Hypothesis: Phospholipids are widely used in food and pharmacological formulations. However, these typically suffer from limitations such as low colloidal stability. Promising stability has been observed for vesicles based on phosphatidylglucose (P-Glu), but fundamental knowledge on this lipid is missing and those observations were made using P-Glu containing mixed acyl groups.

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Ceftazidime-avibactam tolerance and persistence among difficult-to-treat KPC-producing Klebsiella pneumoniae clinical isolates from bloodstream infections.

Eur J Clin Microbiol Infect Dis

November 2024

Faculdade de Ciências Farmacêuticas de Ribeirão Preto - Universidade de São Paulo, Ribeirão Preto, Brazil.

Purpose: Tolerance and persistence occur "silently" in bacteria categorized as susceptible by antimicrobial susceptibility testing in clinical microbiology laboratories. They are different from resistance phenomena, not well-studied, and often remain unnoticeable. We aimed to investigate and characterize ceftazidime-avibactam (CZA) tolerance/persistence in 80 Klebsiella pneumoniae isolates from bloodstream infections.

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Carbon-carbon bond formation using aromatics from biomass.

Chem Commun (Camb)

December 2024

Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden.

The transition to a circular economy requires that we adapt currently used chemical processes to the structurally diverse and often highly oxygenated precursors that are accessible from biomass. In this review, we highlight different examples of carbon-carbon bond formation using aromatics derived from bio-based sources, reported during 2015-2024. Examples of sustainable biomass building blocks include heterocycles such as furfural and hydroxymethylfurfural, obtained from carbohydrates, as well as lignin-based aromatics such as vanillin and eugenol.

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Prion-like proteins play crucial parts in biological processes in organisms ranging from yeast to humans. For instance, many neurodegenerative diseases are believed to be caused by the production of prion-like proteins in neural tissue. As such, understanding the dynamics of prion-like protein production is a vital step toward treating neurodegenerative disease.

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Photoswitchable materials are of significant interest for diverse applications from energy and data storage to additive manufacturing and soft robotics. However, the absorption profile is often a limiting factor for practical applications. This can be overcome using indirect excitation complementary photophysical pathways, such as triplet sensitisation or photon upconversion.

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Journal impact factors were devised to qualify and compare university library holdings but are frequently repurposed for use in ranking applications, research papers, and even individual applicants in mycology and beyond. The widely held assumption that mycological studies published in journals with high impact factors add more to systematic mycology than studies published in journals without high impact factors nevertheless lacks evidential underpinning. The present study uses the species hypothesis system of the UNITE database for molecular identification of fungi and other eukaryotes to trace the publication history and impact factor of sequences uncovering new fungal species hypotheses.

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Unlocking the circular potential: A review and research agenda for remanufacturing in the European wood products industry.

Heliyon

November 2024

School of Engineering, Department of Product, Production and Design, Jönköping University, Box 1026, 551 11, Jönköping, Sweden.

While circularity has gained significant attention in recent years, the wood products industry remains an understudied sector in terms of remanufacturing practices. This study addresses this research gap by synthesizing the existing research on remanufacturing in the wood products industry and developing a research agenda tailored to the European context based on a structured literature review. Content and thematic analyses of peer-reviewed publications founded the basis of the synthesis.

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Article Synopsis
  • Cellulose-lignin blends are explored as eco-friendly alternatives for carbon fiber production, potentially reducing reliance on costly fossil-based polymers.
  • The composition and processing conditions during fiber creation significantly affect the resulting carbon fiber's properties and carbonization behavior.
  • A combination of solid state and 2D solution NMR techniques reveals how different anti-solvents and lignin presence alter the chemical structure and thermal reactions of these precursors, aiding in the enhancement of carbon fiber characteristics.
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A simple grinding method using polyvinylpyrrolidone (PVP) as a capping agent is introduced to synthesize CoFeO nanoparticles. The effects of calcination temperature (ranging from 450 to 850 °C) on the structural, morphological, physical, and optical properties of the materials are investigated using various techniques, including thermogravimetric analysis/differential scanning calorimetry (TGA/DSC), powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), N adsorption isotherm, ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), and vibrating sample magnetometry (VSM). The presence of PVP significantly suppresses the agglomeration of the materials, resulting in a nanocrystalline size of 18 nm for a sample calcined at 650 °C, which is approximately 38% smaller than that of the sample synthesized without PVP.

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The rapid spread and growing number of dengue cases worldwide, alongside the absence of comprehensive vaccines and medications, highlights the critical need for robust tools to monitor, prevent, and control the disease. This review aims to provide an updated overview of important covariates and quantitative modelling techniques used to predict or forecast dengue and/or its vector Aedes mosquitoes in Africa. A systematic search was conducted across multiple databases, including PubMed, EMBASE, EBSCOhost, and Scopus, restricted to studies conducted in Africa and published in English.

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Synthesis, Functionalization, and Biomedical Applications of Iron Oxide Nanoparticles (IONPs).

J Funct Biomater

November 2024

Systems and Synthetic Biology Division, Department of Life Sciences, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.

Iron oxide nanoparticles (IONPs) have garnered significant attention in biomedical applications due to their unique magnetic properties, biocompatibility, and versatility. This review comprehensively examines the synthesis methods, surface functionalization techniques, and diverse biomedical applications of IONPs. Various chemical and physical synthesis techniques, including coprecipitation, sol-gel processes, thermal decomposition, hydrothermal synthesis, and sonochemical routes, are discussed in detail, highlighting their advantages and limitations.

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Machine-learned potentials (MLPs) have exhibited remarkable accuracy, yet the lack of general-purpose MLPs for a broad spectrum of elements and their alloys limits their applicability. Here, we present a promising approach for constructing a unified general-purpose MLP for numerous elements, demonstrated through a model (UNEP-v1) for 16 elemental metals and their alloys. To achieve a complete representation of the chemical space, we show, via principal component analysis and diverse test datasets, that employing one-component and two-component systems suffices.

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Effects of Ring Opening and Chemical Modification on the Properties of Dry and Moist Cellulose─Predictions with Molecular Dynamics Simulations.

Biomacromolecules

December 2024

School of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden.

Thermoplastic properties in cellulosic materials can be achieved by opening the glucose rings in cellulose and introducing new functional groups. Using molecular dynamics, we simulated amorphous cellulose and eight modified versions under dry and moist conditions. Modifications included ring openings and functionalization with hydroxy, aldehyde, hydroxylamine, and carboxyl groups.

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The ongoing energy crisis has made it imperative to develop low-cost, easily fabricated, yet efficient materials. It is highly desirable for these nanomaterials to function effectively in multiple applications. Among transition metal dichalcogenides, tungsten diselenide (WSe) shows great promise but remains understudied.

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Gut microbiota and gut-derived metabolites are altered and associated with dietary intake in women with polycystic ovary syndrome.

J Ovarian Res

November 2024

Postgraduate Program in Endocrinology and Metabolism, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, 90035-003, Brazil.

Background: Disturbances in the gut microbiota may act as mechanisms influencing the interplay between dietary factors and metabolic disorders. Studies have demonstrated that these alterations are associated with the diagnosis of polycystic ovary syndrome (PCOS). Within this context, we aimed to investigate associations between gut microbiota, gut-derived metabolites (short-chain fatty acids [SCFAs] and indole-3-propionic acid [IPA]), and dietary intake in women with PCOS.

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Circulating concentrations of pro-inflammatory cytokines in preeclampsia with varying disease severity.

Pregnancy Hypertens

December 2024

Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Obstetrics and Gynecology, Stellenbosch University, Cape Town, South Africa; Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden.

Objectives: To assess whether plasma concentrations of the circulating inflammatory proteins Interleukin-6 (IL-6), Vascular Cell Adhesion Molecule-1 (VCAM-1) and C-Reactive Protein (CRP) are increased in women with preeclampsia with end-organ complications, compared with women with preeclampsia without end-organ complications.

Study Design: We used samples from a large prospective biobank collection (Preeclampsia Obstetric Adverse Event biobank), and two large, randomized preeclampsia therapeutic treatment trials. All samples were collected in Cape Town, South Africa.

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All-visible light-activated diarylethene (DAE) photoswitches are highly attractive for applications in smart photoresponsive materials. The photocyclization of DAE the low-lying excited triplet state through triplet energy transfer (TET) from a sensitizer has been proven to be an effective approach for the realization of this scheme. However, the TET process is sensitive to oxygen and typically requires more than one sensitizer per photoswitch to facilitate sensitized photocyclization.

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Melt processing of chemically modified cellulosic fibres with only water as plasticiser: Effects of moisture content and processing temperature.

Carbohydr Polym

January 2025

Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; FibRe - Centre for Lignocellulose-based Thermoplastics, Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden. Electronic address:

To replace petroleum-derived polymers with cellulose fibres, it is desirable to have the option of melt processing. However, upon heating, cellulose degradation typically starts before the material reaches its softening temperature. Alternatives to plastics should also, ideally, be recyclable via existing recycling streams.

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The potential leaching risk poses a concern for the large-scale recycling of hazardous waste as lightweight aggregates (LWAs). This paper investigated the combination state of heavy metals in target immobilized phases of LWA through both theoretical calculations and experimental verification. Results reveal that Pb can enter the feldspar crystal cell to form stable interstitial solid solutions, while Cu, Cr, and Ni can replace specific ions in spinel to form replacement solid solutions.

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