116 research outputs found

    Optimization of an Alkylpolyglucoside-Based Dishwashing Detergent Formulation.

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    The aim of this work was to formulate and optimize the washing performance of an alkylpolyglucoside-based dishwashing detergent. The liquid detergent was formulated with five ingredients of commercial origin: anionic (linear sodium alkylbenzenesulfonate and sodium laurylethersulfate), nonionic (C12–C14 alkylpolyglucoside) and zwitterionic (a fatty acid amide derivative with a betaine structure) surfactants, and NaCl for viscosity control. In addition to the plate test, other properties were investigated including ‘‘cloud point’’, viscosity, and emulsion stability. Statistical analysis software was used to generate a central composite experimental design. Then, a second order design and analysis of experiments approach, known as the Response Surface Methodology, was set up to investigate the effects of the five components of the formulation on the studied properties in the region covering plausible component ranges. The method proved to be efficient for locating the domains of concentrations where the desired properties were met

    Cells activated for wound repair have the potential to direct collective invasion of an epithelium.

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    Mechanisms regulating how groups of cells are signaled to move collectively from their original site and invade surrounding matrix are poorly understood. Here we develop a clinically relevant ex vivo injury invasion model to determine whether cells involved in directing wound healing have invasive function and whether they can act as leader cells to direct movement of a wounded epithelium through a three-dimensional (3D) extracellular matrix (ECM) environment. Similar to cancer invasion, we found that the injured cells invade into the ECM as cords, involving heterotypical cell-cell interactions. Mesenchymal cells with properties of activated repair cells that typically locate to a wound edge are present in leader positions at the front of ZO-1-rich invading cords of cells, where they extend vimentin intermediate filament-enriched protrusions into the 3D ECM. Injury-induced invasion depends on both vimentin cytoskeletal function and MMP-2/9 matrix remodeling, because inhibiting either of these suppressed invasion. Potential push and pull forces at the tips of the invading cords were revealed by time-lapse imaging, which showed cells actively extending and retracting protrusions into the ECM. This 3D injury invasion model can be used to investigate mechanisms of leader cell-directed invasion and understand how mechanisms of wound healing are hijacked to cause disease

    PANC Study (Pancreatitis: A National Cohort Study): national cohort study examining the first 30 days from presentation of acute pancreatitis in the UK

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    Abstract Background Acute pancreatitis is a common, yet complex, emergency surgical presentation. Multiple guidelines exist and management can vary significantly. The aim of this first UK, multicentre, prospective cohort study was to assess the variation in management of acute pancreatitis to guide resource planning and optimize treatment. Methods All patients aged greater than or equal to 18 years presenting with acute pancreatitis, as per the Atlanta criteria, from March to April 2021 were eligible for inclusion and followed up for 30 days. Anonymized data were uploaded to a secure electronic database in line with local governance approvals. Results A total of 113 hospitals contributed data on 2580 patients, with an equal sex distribution and a mean age of 57 years. The aetiology was gallstones in 50.6 per cent, with idiopathic the next most common (22.4 per cent). In addition to the 7.6 per cent with a diagnosis of chronic pancreatitis, 20.1 per cent of patients had a previous episode of acute pancreatitis. One in 20 patients were classed as having severe pancreatitis, as per the Atlanta criteria. The overall mortality rate was 2.3 per cent at 30 days, but rose to one in three in the severe group. Predictors of death included male sex, increased age, and frailty; previous acute pancreatitis and gallstones as aetiologies were protective. Smoking status and body mass index did not affect death. Conclusion Most patients presenting with acute pancreatitis have a mild, self-limiting disease. Rates of patients with idiopathic pancreatitis are high. Recurrent attacks of pancreatitis are common, but are likely to have reduced risk of death on subsequent admissions. </jats:sec

    Kinetika raslozhenija vybrannykh pesticidov v vodnojj srede

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    Rola i możliwości wykorzystania roślin alternatywnych na przykładzie krajów Unii Europejskiej

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    Wprowadzenie roślin alternatywnych, na tereny czasowo wyłączone z uprawy, nie przyczyniających się do nadprodukcji żywności a będących atrakcyjnym źródłem surowców dla potrzeb przemysłu, jest jednym z rozsądnych rozwiązań problemów współczesnego rolnictwa. W pracy, na przykładzie krajów Unii Eurpejskiej, przedstawiono rolę i możliwości wykorzystania roślin alternatywnych dla potrzeb przemysłu. Prezentowane dane dotyczą zastosowania meteriału roślinnego do produkcji biopaliw, bioenergii, biowłókna, bioplastików i bioskładników. Wskazują one na wzrastającą rolę roślin alternatywnych, jako źródła surowców odnawialnych oraz na korzyści proekologiczne wynikające z ich wykorzystania w krajach Unii Europejskiej.The fallow lands charge the national budget not only with subvention but also being the reason of increased unemployment in agriculture. A solution would be to introduce the growing of alternative plants which can be a very attractive source of raw material for industrial purposes, not involving surplus food production. On the example of European Community countries the role and possibilities of using alternative plants for industry was shown. Presented data concern the using of plant materials for production of biofuel, bioenergy, biofibre, bioplastics and other bioproducts. The results indicate an increasing role of alternative plants as a source of renewable raw materials and proecological advantage of their use in the EC countries

    Analiza wybranych mutantów lędźwianu siewnego przy zastosowaniu uogólnionego modelu liniowego

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