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Search results for: antioxidant%20activity
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Thymus vulgaris Essential Oil and Its Biological Activity
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Assessment of risks connected with economic activity in the SME sector
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Antimycobacterial activity of 5-arylidene aromatic derivatives of hydantoin
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Structure-Activity Relationships in Two-Electron Reduction of Quinones
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Inhibitors of angiogenesis in cancer therapy – synthesis and biological activity
PublicationAngiogenesis is the process of formation of new capillaries from preexisting blood vessels. Angiogenesis is involved in normal physiological processes, and plays an important role in tumor invasion and development of metastases. Vascular endothelial growth factor (VEGF) plays a key role in angiogenesis. VEGF is a mitogen for vascular endothelial cells and stimulates their proliferation. By inhibiting the biological activity of...
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Selected organophosphorus compounds with biological activity. Applications in medicine
PublicationThe purpose of this article is to provide an overview of the latest applications of organophosphorus compounds (OPs) that exhibit biological activity. A large family of OPs have become popular in recent years. The practical application of OPs in modern medicine has been attributed to their unique properties. In this article, the methods used to select these compounds will be emphasized. This paper will first outline the findings...
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new analogues of agmatine with higher activity to imidazoline receptors
PublicationOpracowano syntezę nowych pochodnych imidazoliny, będących kompilacją struktury agmatyny i imidazoliny w wyniku zaprojektowanej przez nas drogi syntezy. Kluczowymi substratami w syntezie były pochodne 1,2,4 -triaminobutanu, otrzymane z chronionego kwasu glutaminowego. Otrzymane nowe pochodne imidazoliny wykazywały zróżnicowane powinowactwo do receptorów imidazolinowych I1, I2 oraz do receptorów alfa -adrenergicznych.
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Effect of neoteric solvents on the activated sewage sludge activity
PublicationCiecze jonowe (ILs) cieszą sie rosnącym zainteresowaniem z uwagi na fakt, iż znajdują coraz więcej zastosowań jako alternatywa dla rozpuszczalników organicznych. W związku z zaistnieniem możliwości zastosowania ILs w nowych czystych technologiach nastała potrzeba zbadania ich toksyczności w stosunku do organizmów żywych i środowiska. Celem badań było oszacowanie wpływu cieczy jonowych na wyselekcjonowane mikroorganizmy osadu czynnego....
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Improvement of photocatalytic activity of silicate paints by removal of K2SO4
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Hybridization of adsorptivity with photocatalytic activity—carbon-coated anatase
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Lactoferrin Is an Allosteric Enhancer of the Proteolytic Activity of Cathepsin G
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Antimicrobal and ostheointegration activity of bone cement contains nanometals
PublicationPurpose: One of the major problems in bone surgery are infections – especially thoseoccurring in the course of the operating on the patients with lowered immunity system,because they carry the danger of complications. In the Mechanical Department of TechnicalUniversity of Gdansk, there has been carried the research with the use of bone cement andmetal nanoparticles.Design/methodology/approach: The bone cement was used without supplement...
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Radionuclides activity and effective doses referred to geological formations
PublicationNaturally occurring radioactive materials (NORM) are present in Earth’s crust and they caused natural background radiation, variable in different regions. Liquid, gas and solid radionuclides emit three types of radiation – alpha, beta and gamma. Fluctuations of natural radioactivity in different geological formations in the world and in Poland were compared in relation to radiological hazard. Also drilling cuttings from boreholes...
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Knowledge representation of motor activity of patients with Parkinson’s disease
PublicationAn approach to the knowledge representation extraction from biomedical signals analysis concerning motor activity of Parkinson disease patients is proposed in this paper. This is done utilizing accelerometers attached to their body as well as exploiting video image of their hand movements. Experiments are carried out employing artificial neural networks and support vector machine to the recognition of characteristic motor activity...
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Pathological brain network activity: memory impairment in epilepsy
PublicationOur thinking, memory and cognition in general, relies upon precisely timed interactions among neurons forming brain networks that support cognitive processes. The surgical evaluation of drug-resistant epilepsy using intracranial electrodes provides a unique opportunity to record directly from human brain and to investigate the coordinated activity of cognitive networks. In this issue of Neurology®, Kleen and colleagues1 implicate...
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Territorial Aspects of Entrepreneurial Activity in Polish Suburban Zones
PublicationGlobalization has led to an increased correlation and integration of various fields in modern civilization, including those connected with allocation of entrepreneurial functions. Connection, on a global scale, has shown an increased significance of worldwide corporations. Territorial allocation of the entrepreneurial function has become the subject of translocation and revaluation. Translocation can be understood as the change...
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Chemical Composition and Antimicrobial Activity of New Honey Varietals
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Optimal placement of IMU sensor for the detection of children activity
PublicationIn this paper an investigation to determine the optimal placement of IMU sensors for the purpose of children characteristic activity detection is presented. The article compares four different placement of two IMU sensors on human body. Ten healthy volunteers participated within the study. Data were collected firstly from two wireless 9-axial IMU sensors placed at the left and right wrists, then sensors were placed at lower back...
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Biological activity of conjugates of muramyl dipeptides with batracylin derivatives
PublicationW artykule opisano aktywność biologiczną koniugatów muramylo-dipeptydów z batracyliną lub pochodnymi batracyliny. Badania przeprowadzone w Akademii Medycznej w Gdańsku miały na celu oznaczenie immunomodulacyjnych właściwości tych koniugatów wobec subpopulacji leukocytów krwi obwodowej hodowanych w obecności komórek nowotworowych (K562, WEHI164, Ab melanoma). Leukocyty izolowane były z krwi obwodowej uzyskanej od zdrowych ochotników....
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A.D.A.M. test (Antibiofilm Dressing's Activity Measurement) — Simple method for evaluating anti-biofilm activity of drug-saturated dressings against wound pathogens
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Profile and Content of Phenolic Compounds in Leaves, Flowers, Roots, and Stalks of Sanguisorba officinalis L. Determined with the LC-DAD-ESI-QTOF-MS/MS Analysis and Their In Vitro Antioxidant, Antidiabetic, Antiproliferative Potency
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Efficient optimization approaches for microwave assisted extraction of high-quality antioxidant compounds from Salvia officinalis L.: UHPLC-HRMS differential analysis of phenolic profiles obtained by ultrasound and microwave extraction
PublicationThe study aims to optimize MAE of total phenolic compounds (TPC) and antioxidant capacity from Salvia officinalis L. leaves using a definitive screening design (DSD) and I-optimal design. UHPLC-HRMS analysis was used to identify and compare the composition of MAE and UAE optimal extracts. The results showed that DSD and I-optimal design were successfully applied for the optimization of MAE targeting phenolics and other antioxidants...
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NUTRITIONAL AND PHARMACEUTICAL APPLICATIONS OF BIOACTIVE COMPOUNDS IN TROPICAL FRUITS
PublicationDuring the past two decades our international scientific group investigated in vitro the physicochemical and nutritional characteristics of some cultivars of durian at various stages of ripening, mangosteen and new cultivars of snake fruit in comparison with widely used avocado, kiwifruit and mango, and in vivo their influence on laboratory animals. The main objective of the present study was to screen and compare the properties...
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Phosphinoborenium cations stabilized by N-heterocyclic carbenes: synthesis, structure, and reactivity
PublicationPhosphinoborenium cations stabilized by N-heterocyclic carbenes (NHCs) were synthesized via the reaction of bromo(phosphino)boranes with NHCs. Their structures were investigated by heteronuclear magnetic resonance spectroscopy, X-ray diffraction, and density functional theory calculations. They possess a planar trigonal boron center directly bonded with the pyramidal phosphanyl group (PR2) and can be treated as cationic phosphinoboranes....
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Reactivity of triphosphinoboranes towards H3B·SMe2: access to derivatives of boraphosphacycloalkanes with diverse substituents
PublicationTriphosphinoboranes activated the B–H bond in the BH3 molecule without any catalysts at room temperature. Hydroboration reactions led to boraphosphacyloalkanes with diverse structures. The outcomes of reactions depend on the size of the phosphanyl substituent on the boron atom of the parent triphosphinoborane, where derivatives of boraphosphacyclobutane and boraphosphacyclohexane were obtained. Furthermore, the precursor of triphosphinoboranes,...
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Influence of substituents in vinyl groups on reactivity of parylene during polymerization process
PublicationPraca zawiera wyniki obliczeń kwantowych wielokonfiguracyjnych i DFT mechanizmów reakcji parylenu i cząsteczek z wiązaniami podwójnymi w fazie gazowej. Zbadany został i zanalizowany wpływ podstawników w strukturach alkenów na reaktywność parylenu i alkenów.
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Psychosocial stress and cortisol stress reactivity predict breast milk composition
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Comparative assessment of two extraction procedures for determination of bioactive compounds in some berries used for daily food consumption
PublicationTwo extractions with methanol and water were used to determine the antioxidant and binding properties of some berries as a supplement to food. Fluorometry, FTIR spectra and radical scavenging assays were used for characterisation of bioactive compounds (polyphenols, flavonoids, flavanols and tannins) and the levels of their antioxidant activities (AAs). The contents of bioactive compounds and AAs in water and methanol polyphenol...
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Comparative Study on Assisted Solvent Extraction Techniques for the Extraction of Biologically Active Compounds from Sideritis raeseri and Sideritis scardica
PublicationThe plants in the Sideritis genus are postulated to exhibit several important medicinal properties due to their unique chemical composition. To isolate the targeted phytochemical compounds, the selection of a suitable extraction method is of primary importance. In this work, a comparative study on the phytochemical profiles of various Sideritis raeseri and Sideritis scardica extracts has been carried out. An untargeted metabolomics...
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S09 Insights into the development of the physical activity environment policy index, a tool for benchmarking implementation of public policies to create healthy physical activity policy environments
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S09-4 The development of the Physical Activity Environment Policy Index (PA-EPI): a tool for monitoring and benchmarking government policies and actions to improve physical activity
PublicationBackground Insufficient physical activity (PA) is a global issue for health. A multifaceted response, including government action, is essential to improve population levels of PA. The purpose of this study was to develop the ‘Physical Activity Environment Policy Index’ (PA-EPI) monitoring framework to assess government policies and actions for creating a healthy PA environment. Methods An iterative process was undertaken. This...
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Synthesis and biological activity of mycophenolic acid-amino acid derivatives
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The Total Efficiency of Teaching Activity of Polish Higher Education Institutions
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A Novel Method for the Combined Photocatalytic Activity Determination and Bandgap Estimation
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Antibacterial activity of gelatin-based films incorporated with chitosan or silver
PublicationFolie żelatynowe z dodatkiem srebra jonowego powodowały redukcję komórek Escherichia coli i Staphylococcus aureus o 90% pod powierzchnią folii. Nie obserwowano natomiast strefy zahamowania wzrostu dookoła krążków folii. W przypadku filmów chitozanowych lub żelatynowo-chitozanowych ich przeciwdrobnoustrojowa aktywność zależała od stopnia deacetylacji chitozanu.
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Prediction of antimicrobial activity of imidazole derivatives by artificial neural networks
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Synthesis and structure-activity studies of peptide-acridine/acridone conjugates
PublicationW artykule opisano strukturę, syntezę i biologiczną aktywność peptydowych koniugatów akrydyny i akrydonu jako potencjalnych leków o aktywności przeciwnowotworowej i przeciwwirusowej.
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New Chalcones Derivatives With Potent Antitumor Activity And Their Metabolism In Vitro
PublicationChalcone derivatives exhibit a broad range of biological activities, with antioxidant and cytotoxic properties among the most studied. Despite numerous reports on chalcones as cytotoxic, and potentially anticancer agents, very little is know on their actual mechanism of activity. Generally, chalcones are considered as antimitotic agents, which interfere with tubulin assembly.We have recently developed a new class of chalcones with...
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Preparation and photocatalytic activity of iron-modified titanium dioxide photocatalysts
PublicationTiO2 modyfikowany żelazem otrzymano dwiema metodami: metodą zol-żel oraz metodą impregnacji powierzchniowej. Fotokatalizatory kalcynowano w temperaturze 400C. Jako matrycę TiO2 zastosowano komercyjnie dostępne proszki ditlenku tytanu: P25 (Evonik, Niemcy, 50m2/g) oraz ST-01 (Ishihara Sangyo, Japonia, 300m2/g). Charakterystyka otrzymanych fotokatalizatorów obejmowała wyznaczenie właściwości absorpcyjnych, powierzchni właściwej BET...
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Elderly persons professional activity - substantive issues and methodical challenges
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Photocatalytic activity of layered MoS2 in the reductive degradation of bromophenol blue
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Habitual physical activity and estradiol levels in women of reproductive age
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Covalent conjugation of graphene oxide with methotrexate and its antitumor activity
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Effect of graphene thickness on photocatalytic activity of TiO2-graphene nanocomposites
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Elderly persons professional activity - substantive issues and methodical challenges
PublicationPopulation ageing and mass withdrawal of persons around retirement age from the labour market constitutes a serious threat for European Union economy, especially in the so-called new member states. The coming years are expected to bring a considerable increase in public spending on pensions and health care, as well as changes in the structure and size of consumer demand and an increase in the number of socially excluded individuals....
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THE DETERMINANTS OF ENTERPRISE PROFI TABILITY DURING REDUCED ECONOMIC ACTIVITY
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Enzymatic Activity as New Moorsh-Forming Process Indicators of Peatlands
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The activity of superoxide dismutases (SODs) at the early stages of wheat deetiolation
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Comparative Study on Antistaphylococcal Activity of Lipopeptides in Various Culture Media
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Anti-inflammatory Activity and Phytochemical Profile of Galinsoga Parviflora Cav.
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