196,817 results match your criteria: "Faculty of Science and Engineering; University of Groningen[Affiliation]"

Unlabelled: This study investigates the optimization of bioactive components in thermosonicated black carrot juice using response surface methodology (RSM) and gradient boosting (GB) modeling techniques. Thermosonication, a combination of ultrasound and heat, was applied to enhance the nutritional quality of black carrot juice, which is rich in anthocyanins, phenolic compounds, and antioxidants. The study examined the effects of temperature, processing time, and ultrasonic amplitude on total carotenoid content (TCC), total anthocyanin content (TAC), ferric reducing antioxidant power (FRAP), and total phenolic content.

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Recent interest has been focused on extracellular matrix (ECM)-based scaffolds totreat critical-sized bone injuries. In this study, urea was used to decellularize and solubilize human placenta tissue. Then, different concentrations of ECM were composited with 8% alginate (Alg) and 12% silk fibroin (SF) for printing in order to produce a natural 3D construct that resembled bone tissue.

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Objective: To evaluate whether patients with tension-type headache (TTH) exhibit abnormal brain functional connectivity compared to healthy controls.

Background: TTH is one of the most prevalent headache disorders throughout the world. The present study delves into brain functional connectivity in patients with TTH to enhance the understanding of its underlying pathophysiology.

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The Aging Chemistry of Perovskite Precursor Solutions.

J Phys Chem Lett

January 2025

State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China.

A significant barrier to the commercialization of solution-processed perovskite solar cells (PSCs) is the chemical instability of the components in precursor solutions under ambient conditions. This instability leads to solution aging, which subsequently diminishes the quality and reproducibility of the resulting PSCs. Inspired by recent published works, which focused on the deprotonation of organic cations, the oxidation of iodide, and the formation of undesired byproducts, we here systematically summarize and provide an outlook on the research directions and perspectives of the origin of precursor solution aging and countermeasures, such as using stabilizing additives, redox shuttles, Schiff base reactions, and green solvents.

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Engineering Gene and Protein Switches for Regulation of Lineage-Specifying Transcription Factors.

Biotechnol Bioeng

January 2025

Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland.

Human pluripotent stem cells (hPSCs) can be differentiated in vitro to an increasing number of mature cell types, presenting significant promise for addressing a wide range of diseases and studying human development. One approach to further enhance stem cell differentiation methods would be to coordinate multiple inducible gene or protein switches to operate simultaneously within the same cell, with minimal cross-interference, to precisely regulate a network of lineage-specifying transcription factors (TFs) to guide cell fate decisions. Therefore, in this study, we designed and tested various mammalian gene and protein switches responsive to clinically safe small-molecule inhibitors of viral proteases.

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In the present study, a novel voltammetric sensor based on a boron-doped copper oxide/graphene (B-CuO-Gr) nanocomposite and molecularly imprinted polymer (MIP) was developed for the detection of paclobutrazol (PAC) in apple and orange juice samples. The B-CuO-Gr nanocomposite was prepared using sol-gel and calcination methods. After modifying glassy carbon electrodes with the B-CuO-Gr nanocomposite, PAC-imprinted electrodes were prepared in the presence of 100.

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Highly Humidity-Resistant Oxynitride Phosphor BaSiNO:Ce for pc-LEDs.

Inorg Chem

January 2025

Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, Shaanxi, P. R. China.

Many phosphor hosts, for example, nitrides and sulfides, often face challenges such as hydrolysis and oxidation, limiting their application in phosphor-converted white light-emitting diodes (pc-LEDs). In this study, we developed a highly humidity-resistant yellow-green-emitting phosphor BaSiNO:Ce (BSNO:Ce). The DFT calculations revealed a high Debye temperature (Θ = 1159 K), indicating a rigid crystal structure that contributes to the photoluminescence thermal quenching resistance of BSNO.

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Ca excitability of glia to neuromodulator octopamine in Drosophila living brain is greater than that of neurons.

Acta Physiol (Oxf)

February 2025

Laboratory of Neuroendocrinology-Molecular Cell Physiology, Faculty of Medicine, Institute of Pathophysiology, University of Ljubljana, Ljubljana, Slovenia.

Aim: Octopamine in the Drosophila brain has a neuromodulatory role similar to that of noradrenaline in mammals. After release from Tdc2 neurons, octopamine/tyramine may trigger intracellular Ca signaling via adrenoceptor-like receptors on neural cells, modulating neurotransmission. Octopamine/tyramine receptors are expressed in neurons and glia, but how each of these cell types responds to octopamine remains elusive.

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A series of anionic poly(acrylamide--sodium acrylate)/poly(ethylene glycol), PAN/PEG, hybrids were conveniently synthesized free radical aqueous polymerization by integrating bentonite, kaolin, mica, graphene and silica, following a simple and eco-friendly crosslinking methodology. A comparative perspective was presented on how integrated nanofillers affect the physicochemical properties of hybrid gels depending on the differences in their structures. Among the five types of nanofillers, bentonite-integrated hybrid gel had the highest water absorbency, while graphene-integrated gel had the lowest.

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Dielectric nanocomposites have garnered significant interest owing to their potential applications in energy storage. However, achieving high energy density (U) and charge/discharge efficiency (η) remains a challenge in their fabrication. In this paper, core-shell structured BaTiO@Polyvinylpyrrolidone (BT@PVP) nanoparticles are prepared, and incorporated into a semi-crystalline polyvinylidene fluoride (PVDF) matrix.

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Direct cardiac reprogramming or transdifferentiation is a relatively new and promising area in regenerative therapy, cardiovascular disease modeling, and drug discovery. Effective reprogramming of fibroblasts is limited by their plasticity, that is, their ability to reprogram, and depends on solving several levels of tasks: inducing cardiomyocyte-like cells and obtaining functionally and metabolically mature cardiomyocytes. Currently, in addition to the use of more classical approaches such as overexpression of exogenous transcription factors, activation of endogenous cardiac transcription factors via controlled nucleases, such as CRISPR, represents another interesting way to obtain cardiomyocytes.

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The factors controlling the catalytic activity in photochemical hydrogen evolution reaction (HER) are studied in detail for two macrocyclic cobalt compounds bearing two N-heterocyclic carbenes and two pyridyl donors ( and , where has a methoxy substituent on each pyridyl ligand). The present study adopts an aqueous photosystem consisting of EDTA, [Ru(bpy)] (bpy = 2,2'-bipyridine), and MV (MV = methylviologen) at pH = 5. Both catalysts are shown to promote HER in a similar efficiency (TON = 12-13 in 6 h), revealing a minor contribution of the electron-donating methoxy substituents.

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Association Between Chewing Capacity and Mortality Risk: The Role of Diet and Ageing.

J Clin Periodontol

January 2025

Department of Periodontology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China.

Aim: Masticatory dysfunction due to tooth loss is a potentially modifiable risk for mortality, but the pathway behind that remains to be investigated. This prospective study aimed to examine the role of diet and ageing in the associations between chewing capacity and long-term mortality.

Methods: Data were obtained from participants (aged ≥ 20) in the National Health Nutritional and Health Survey (NHANES 1999-2010, n = 22,900).

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Given the growing concern over the impact of brain health in individuals with overweight, understanding how mental exertion (ME) during exercise affects substrate oxidation and cardiorespiratory outcomes is crucial. This study examines how ME impacts these outcomes during an incremental exercise test in adults with overweight. Seventeen adults who were overweight completed an incremental exercise test on a cycle ergometer two times, with and without the Stroop task.

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Background: Proprioceptive deficits are common among stroke survivors and can negatively impact their balance and postural control. However, there has been little evaluation of the change in proprioceptive deficits in the lower limbs over time after stroke. This study aimed to examine proprioceptive deficits over time after stroke in both the affected and "unaffected" lower limbs.

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Attenuation of progressive surface gravity waves by floating spheres.

Sci Rep

January 2025

Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CD, Delft, The Netherlands.

Laboratory experiments were performed to investigate the attenuation of progressive deep-water waves by a mono-layer of loose- and close-packed floating spheres. We measured the decay distance of waves having different incident wave frequency and steepness. The attenuation of waves was strong if the surface concentration of particles was close-packed, with the decay distance being shorter for incident waves with higher frequency and steepness.

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Intelligent two-phase dual authentication framework for Internet of Medical Things.

Sci Rep

January 2025

Department of Computer Science, College of Computer and Information Sciences, King Saud University, Riyadh, 11543, Saudi Arabia.

The Internet of Medical Things (IoMT) has revolutionized healthcare by bringing real-time monitoring and data-driven treatments. Nevertheless, the security of communication between IoMT devices and servers remains a huge problem because of the inherent sensitivity of the health data and susceptibility to cyber threats. Current security solutions, including simple password-based authentication and standard Public Key Infrastructure (PKI) approaches, typically do not achieve an appropriate balance between security and low computational overhead, resulting in the possibility of performance bottlenecks and increased vulnerability to attacks.

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Mitophagy that disrupt mitochondrial membrane potential (MMP), represents a critical focus in pharmacology. However, the discovery and evaluation of MMP-disrupting drugs are often hampered using commercially available marker molecules that target similar or identical zones. These markers can significantly interfere with, obscure, or amplify the functional effects of MMP-targeting drugs, frequently leading to clinical failures.

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Tumor cell-derived N-acetyl-aspartyl-glutamate reshapes the tumor microenvironment to facilitate breast cancer metastasis.

Sci Bull (Beijing)

December 2024

Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences; State Key Laboratory of Genetic Engineering; Cancer Institutes; Department of Oncology; Key Laboratory of Breast Cancer in Shanghai; The Shanghai Key Laboratory of Medical Epigenetics; Shanghai Key Laboratory of Radiation Oncology; The International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology; Shanghai Medical College; Fudan University, Shanghai 200032, China; Jinfeng Laboratory, Chongqing 401329, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China. Electronic address:

Neurotransmitters are increasingly recognized to play important roles in limiting anti-tumor immunity. N-acetyl-aspartyl-glutamate (NAAG) has been extensively studied in neurological disorders; however, its potential role in restricting anti-tumor immunity has not been investigated. Here, we demonstrated that NAAG or its synthetase RimK-like family member B (RIMKLB) significantly disrupted anti-tumor immunity by rewiring the myeloid progenitor differentiation of polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs), which in turn promoted breast cancer growth and metastasis.

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Expanding access to maggot containment dressings through redesign and innovation.

Int Wound J

January 2025

Applied BioSciences, Faculty of Science and Engineering, Macquarie University, North Ryde, New South Wales, Australia.

There are two major styles of maggot debridement dressings: (1) confinement dressings that form a cage around the wound, and (2) containment dressings that completely surround the maggots within a sealed porous bag. For producers and clinicians wanting to prepare containment dressings using readily available polyester bags, it is currently difficult to seal these bags without expensive high-temperature plastic welders. This study aimed to identify simple and affordable methods for sealing maggots within polyester net bags.

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Development of the relationship between visual selective attention and auditory change detection.

Neuroimage

January 2025

State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, 100875, China. Electronic address:

Understanding the developmental trajectories of the auditory and visual systems is crucial to elucidate cognitive maturation and its associated relationships, which are essential for effectively navigating dynamic environments. Our one recent study has shown a positive correlation between the event-related potential (ERP) amplitudes associated with visual selective attention (posterior contralateral N2) and auditory change detection (mismatch negativity) in adults, suggesting an intimate relationship and potential shared mechanism between visual selective attention and auditory change detection. However, the evolution of these processes and their relationship over time remains unclear.

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Mycobacterium tuberculosis (M. tuberculosis) bacteria can cause oxidative stress and the production of inflammatory cytokines, creating an environment that enhances tumour formation, progression and metastasis. Epidemiological studies have found a link between lung cancer and tuberculosis (TB), but the cellular mechanism is still unclear.

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Endophytic entomopathogenic fungi enhance plant immune responses against tomato leafminer.

J Invertebr Pathol

January 2025

Department of Biosciences, Faculty of Science and Engineering, Swansea University, Swansea, UK. Electronic address:

Plants employ various defense mechanisms to protect themselves from invaders such as microorganisms and herbivores. By recognizing these threats, plants can trigger a cascade of responses throughout their tissues, effectively priming their defenses and enhancing their resistance to future attacks. In this study, we examined the indirect effects of the entomopathogenic fungi Beauveria bassiana strain GHA and Metarhizium anisopliae strain F01 on tomato growth, expression of selected plant genes, production of secondary metabolites, and preference and performance of the tomato leafminer (Tuta absoluta).

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Novel Tryptophyllin Peptides from Physalaemus centralis Inhibit Oxidative Stress-Induced Endothelial Dysfunction in Rat Aorta Preparation.

Toxicon

January 2025

Applied Immunology and Morphology Research Centre, NuPMIA, Morphology Area, Faculty of Medicine, University of Brasília, UnB, Brasília, Distrito Federal, Brazil. Electronic address:

Amphibian skin is a rich source of molecules with biotechnological potential, including the tryptophyllin family of peptides. Here, we report the identification and characterization of two tryptophyllin peptides, FPPEWISR and FPWLLS-NH, from the skin of the Central Dwarf Frog, Physalaemus centralis. These peptides were identified through cDNA cloning and sequence comparison.

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Graphene oxide and silymarin combination: A novel approach to improving post-cryopreservation quality of ram sperm.

Cryobiology

January 2025

Department of Clinical Sciences, Faculty of Veterinary Medicine, Razi University, Kermanshah, Iran; Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. Electronic address:

Graphene oxide (GO) has been extensively studied for its diverse biomedical applications, including drug delivery, imaging, and tissue engineering. Silymarin, as a flavonoid complex derived from the milk thistle plant, has recently shown potential health benefits, particularly concerning reproductive health. This study aims to evaluate the effects of GO and silymarin supplementation, both individually and in combination, on the characteristics of frozen-thawed ram sperm.

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