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Wyniki wyszukiwania dla: Chemistry of wine
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COLOUR TERMS IN INORGANIC CHEMISTRY: A CORPUS STUDY
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3-MCPD: A worldwide problem of food chemistry
Publikacja3-MCPD is a heat-induced food contaminant which has been widely investigated for decades. This paper presents an overview of current knowledge about 3-MCPD including its formation routes, occurrence in various foodstuffs, analytical approach, toxicological aspects and future research perspectives. So far 3-MCPD was determined in its free and bound form in thermally-treated foods, edible oils and fats, and infant foods including...
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Mussel‐inspired biomaterials: From chemistry to clinic
PublikacjaAfter several billions of years, nature still makes decisions on its own to identify, develop, and direct the most effective material for phenomena/challenges faced. Likewise, and inspired by the nature, we learned how to take steps in developing new technologies and materials innovations. Wet and strong adhesion by Mytilidae mussels (among which Mytilus edulis—blue mussel and Mytilus californianus—California mussel are the most...
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Metal-Organic Frameworks in Green Analytical Chemistry
PublikacjaTaking into consideration the rapid expansion of MOFs applications in the analytical chemistry area, it is important to evaluate the existing and future analytical MOF-based methods according to GAC principles. From this point of view, eco-friendly MOFs-based methods should include features such as: green design and synthesis of MOF, evaluation of toxicity issues of MOFs, and incorporation of MOFs in GAC methods. This Chapter will...
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Komunikacja on-line [on-line]. lipiec 2002 [dostęp 13 grudnia 2002]. Dostę-pny wWorld wide web:<http://www.swiatmarketingu.pl/pages/i/1/5020.php>.
PublikacjaW wielu opracowaniach mówiących o roli Internetu w działalności organizacjigospodarczych można spotkać się ze stwierdzeniem, że Internet stwarza fir- mom ogromne możliwości rozwoju. Artykuł prezentuje podejście, w którym na- cisk jest położony na nawiązanie relacji z klientami, warunkującymi wytwo- rzenie silnych więzów pomiędzy nimi a organizacją.
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Jacek Namieśnik prof. dr hab. inż.
OsobyUrodził się 10 grudnia 1949 r. w Mogilnie, zmarł 14 kwietnia 2019 r. w Gdańsku – polski chemik, profesor nauk chemicznych, specjalizujący się w chemii analitycznej i środowiskowej. Rektor Politechniki Gdańskiej w latach 2016–2019. Studia wyższe ukończył w 1972 r. na Wydziale Chemicznym Politechniki Gdańskiej, uzyskując tytuł magistra inżyniera chemika. W 1972 r. rozpoczął pracę na Politechnice Gdańskiej, gdzie w 1978 r. obronił...
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AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
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International Journal of Wine Business Research
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Rapid design of miniaturised branch-line couplers through concurrent cell optimisation and surrogate-assisted fine-tuning
PublikacjaIn this study, the authors introduce a methodology for low-cost simulation-driven design optimisation of highly miniaturised branch-line couplers (BLCs). The first stage of their design approach exploits fast concurrent optimisation of geometrically dependent, but electromagnetically isolated cells that constitute a BLC. The cross-coupling effects between the cells are taken into account in the second stage, where a surrogate-assisted...
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HETEROATOM CHEMISTRY
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N-doped carbon nanospheres as selective fluorescent probes for mercury detection in contaminated aqueous media: chemistry, fluorescence probing, cell line patterning, and liver tissue interaction
PublikacjaA precise nano-scale biosensor was developed here to detect Hg2+ in aqueous media. Nitrogen-doped carbon nanospheres (NCS) created from the pyrolysis of melamine–formaldehyde resin were characterized by FESEM, XRD, Raman spectra, EDS, PL, UV–vis spectra, and N2 adsorption–desorption, and were used as a highly selective and sensitive probe for detecting Hg2+ in aqueous media. The sensitivity of NCS to Hg2+ was evaluated by photoluminescence...
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Future of bench chemistry – webinarium
WydarzeniaCentrum Transferu Wiedzy i Technologii PG zaprasza do udziału w webinarium poświęconym najnowszym trendom i osiągnięciom w obszarze nauk chemicznych wspieranych sztuczną inteligencją (AI). Wymagana rejestracja.
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Cyclic Peptidic Furin Inhibitors Developed by Combinatorial Chemistry
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Direct chromatographic methods in the context of green analytical chemistry
PublikacjaWe review analytical protocols based on gas and liquid chromatography (GC and LC), but involving no sample preparation.Green analytical chemistry seeks to minimize negative impacts of analytical chemistry. Direct analytical methods ideally fulfillthis requirement, as they preclude sample preparation - the most polluting step of the analytical procedure.We describe examples of GC methodologies for environmental and food analysis...
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Selection of Effective HTRA3 Activators Using Combinatorial Chemistry
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Chemometrics approaches to green analytical chemistry procedure development
PublikacjaChemometric tools are widely used in analytical chemistry for the reduction of data dimensionality, grouping of variables and processing of analytical signals. They have also the potential to be applied in analytical procedure development with the aim of minimizing the procedure’s environmental impact. The design of experiment gives the possibility to obtain much better information on the system response than in case of “changing...
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Application of deep eutectic solvents (DES) in analytical chemistry
PublikacjaRecent years have been associated with efforts to reduce the impact on the natural environment. A greener approach has been introduced in various areas of science, including analytical chemistry. One of the basic procedures for preparing a sample for analysis is its extraction. Traditional methods involve the use of large amounts of organic compounds, often toxic, with an unfavorable impact on the environment. A representative...
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Surface chemistry aspects of fluorosurfactants as components in AFFF preparation
PublikacjaZbadano właściwości powierzchniowe fluorowanych surfaktantów anionowych a także roztworów środków pianotwórczych na bazie fluorowanych surfaktantów stosowanych w gaszeniu pożarów substancji ropopochodnych ze szczególnym uwzględnieniem ich zdolności do obniżania napięć międzyfazowych. Wyselekcjonowana para surfaktantów wykazała się wysoką zdolnością obniżania napięć międzyfazowych na granicy faz olej-woda, porównywalną z roztworami...
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Image Processing On Line
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Journal of Wind Engineering
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Wind Energy Science
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Impact of selected parameters of the fermentation process of wine and wine itself on the biogenic amines content: Evaluation by application of chemometric tools
PublikacjaThe demand for safer foods has promoted more research into biogenic amines (BAs) over the past few years, however, there are still some questions that remain unanswered. Despite the fact that BAs are present in wine and can cause toxic effect to the body, a shared regulation limiting the amounts of BAs in wine is still lacking. A detailed understanding of their presence in wine is also important for the food trade sector. Therefore,...
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Mycotoxins in red wine: Occurrence and risk assessment
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SELECTED ASPECTS OF THE EVALUATION OF THE QUALITY OF GRAPE WINE
PublikacjaDevelopment of the domestic grape wine market has been presented. The number of grape wine producing entities, acreage, and volume of production over last five years are presented. The composition of red grape wine has been discussed involving health promoting aspects. Two methods of wine quality determination: analytical and sensory meth ods have been described. Physicochemical parameters influencing wine quali ty (acidity, sweetness)...
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Scholarly communication activities in the fields of chemistry and economics. A Polish perspective
PublikacjaThis study examines the scholarly communication activities in two scientific fields, chemistry and economics, in a Polish context. The dissertation aims at investigating what characterises the publishing choices of researchers and what supplementary forms for the dissemination of research output are used by scholars. In addition, the paper is looking into what are the views and awareness of open access and institutional repositories...
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Green analytical chemistry as an integral part of sustainable education development
PublikacjaGreen chemistry is an important way of thinking in the field of chemistry and aims to conduct processes in accordance with the principles of sustainable development. It is the application of a wide range of principles that minimize the impact of both chemical processes and products on the environment. And what about analytical chemistry? Without a doubt, analytical chemistry plays an important role in the sustainable development...
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New insights into the application of MSPD in various fields of analytical chemistry
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Dew and hoarfrost frequency, formation efficiency and chemistry in Wroclaw, Poland
PublikacjaThis article presents the results of a research study concerning a comparison of frequency, formation efficiency and basic physico-chemical properties of dew and hoarfrost in urban conditions. Longer than two-year series of measurements was carried out from 1 February 2008 to 10 March 2010 in Wroclaw, Poland. Sampling of atmospheric deposits was made by means of insulated plain passive radiative condensers, which allowed to collect...
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Magnetic Covalent Organic Frameworks—Fundamentals and Applications in Analytical Chemistry
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Environmental Role of Rime Chemistry at Selected Mountain Sites in Poland
PublikacjaThe results of field experiments on fog pollutantdeposition enhanced by local mountain climate, completed by thedendrochronological analysis of the forest response, are presentedin this paper. In spite of their low absolute altitude (1,000-1,600 ma.s.l), the Sudetes and the Silesian Beskid form a noticeable orographicbarrier for the airflow of the humid Atlantic air masses.This results in the increase of cloudiness and fog frequency...
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Green Analytical Chemistry in Determination of Volatile Fatty Acids in Wastewater
PublikacjaCharakterystyka metodyk oznaczania lotnych kwasów tłuszczowych w próbkach wodnych, opierających się na Zasadach Zielonej Chemii. Opis zastosowania techniki bezpośredniego dozowania próbki wodnej do chromatografu gazowego, techniki analizy fazy nadpowierzchniowej oraz techniki mikroestrakcji do fazy stacjonarnej.
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Chemistry of non-precipitation components of wet deposition with Poland as an example
PublikacjaW pracy przedstawiono badania dotyczące chemizmu osadów atmosferycznych pobieranych na terenie Polski w okresie od 2004 do 2007 roku. Średni skład jonowy (TIC) dla rosy, szronu i mgły (w stanie ciekłym i stałym) wynosił odpowiednio 2147, 1929 i 1014 µeq/l, gdzie typowy skład jonowy TIC dla opadów atmosferycznych wynosi 318 µeq/l. Dla wszystkich typów osadów atmosferycznych różne jony pełnią ważną rolę: Ca2+ i SO42-...
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Green Analytical Chemistry: Summary of Existing Knowledge and Future Trends
PublikacjaAnalysis of recent publications in green analytical chemistry shows the current trends and future needs in this area. The main issues are related with search for cheaper, more efficient, more accurate, greener and miniaturized alternatives. Miniaturization is perhaps, the most notable current trend in analytical chemistry. Rapid developments and improvements in instrumentation have led to impressive range of benchtop technology...
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Remarks on use of the term “deep eutectic solvent” in analytical chemistry
PublikacjaAbout 20 years ago, Abbott and co-workers researched new solvents that were based on mixtures of choline chloride with urea and carboxylic acids and that were liquid at ambient temperature. The term “deep eutectic solvent” (DES) was later adopted for similar mixtures. As DESs have a number of interesting features, they quickly attracted the attention of researchers and found application in various branches of chemical and materials...
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CHEMISTRY & BIODIVERSITY
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BIOCONJUGATE CHEMISTRY
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Frontiers in Chemistry
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The effect of full-cell impregnation of pine wood (Pinus Sylvestris L.) on the fine dust content during sawing on a frame sawing machine
PublikacjaIn this paper the results of the analysis of the effect of the impregnation treatment of pine wood on the granularity of sawdust from the sawing process on the frame sawing machine PRW 15M are presented. Granulometric analyses of chips from impregnated and unimpregnated pine wood implies that the impregnation of pine wood does not affect the size and structure of the sawdust produced. A major ≈ 95% share of the formed chips is...
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Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw
PublikacjaThe experimental results of the study focused on the effect of drying processes of modified air drying and warm air steam mixture drying of pine and beech wood on the size of sawdust particles created in cutting using PRW-15M sash gang saw, are presented in the paper. Particle size analysis of dry sawdust was performed using two methods—sieving method and laser diffraction analysis. The results showed that the drying process did...
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On-Line Partitioning for On-Line Scheduling with Resource Conflicts
PublikacjaWithin this paper, we consider the problem of on-line partitioning the sequence of jobs which are competing for non-sharable resources. As a result of partitioning we get the subsets of jobs that form separate instances of the on-line scheduling problem. The objective is to generate a partition into the minimum number of instances such that the response time of any job in each instance is bounded by a given constant. Our research...
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Detection, identification and determination of resveratrol in wine. Problems and challenges
PublikacjaResveratrol is a compound synthesized by plants in response to unfavorable conditions of growth like mechanical injury, siege of bacteria or fungi and UV exposure. It is concentrated mostly in grapes skin and further more in the products made from grapes especially red wines. Each wine is characterized by different amount of given stilbene since its occurrence is affected by many factors like: types of grapes, environment (climate,...
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Evaluation of the influence of grapevine growing conditions on wine quality
PublikacjaScientists are increasingly interested in the viticulture concept of terroir, which states that unique properties of wine are strictly related to the environmental conditions under which grapes are cultivated. The aim of the research was to compare the parameters characterizing wines produced in Poland, such as pH, conductivity, total organic carbon (TOC), and concentration of anions (F−, Cl−, NO2−, NO3−, PO43−, SO42−). It was...
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Green Chemistry in Higher Education: State of the Art, Challenges, and Future Trends
PublikacjaNowadays, there is increasing interest in global sustainability, and thus, university students would like to know how human actions affect the health status of our planet. This is mainly due to their basic knowledge of problems such as global warming and greenhouse gases. Students would like to gain knowledge on how to safeguard the earth for future generations. This must involve changes in education programs at interested institutions...
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Chemometrics for Selection, Prediction, and Classification of Sustainable Solutions for Green Chemistry—A Review
PublikacjaIn this review, we present the applications of chemometric techniques for green and sustainable chemistry. The techniques, such as cluster analysis, principal component analysis, artificial neural networks, and multivariate ranking techniques, are applied for dealing with missing data, grouping or classification purposes, selection of green material, or processes. The areas of application are mainly finding sustainable solutions...
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The 15th Workshop on Progress in Trace Metal Speciation for Environmental Analytical Chemistry
PublikacjaArtykuł jest sprawozdaniem z konferencji TRACESPEC - the 15th Workshop on progress in trace Metal Speciation for Environmental Analytical Chemistry, ktora odbyla sie we wrzesniu 2016 na Politechnice Gdańskiej. W artykule przedstawiono głowne cele i załozenia konferencji oraz opisano program naukowy.
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Bioassays as one of the Green Chemistry tools for assessing environmental quality: A review
PublikacjaFor centuries, mankind has contributed to irreversible environmental changes, but due to the modern science of recent decades, scientists are able to assess the scale of this impact. The introduction of laws and standards to ensure environmental cleanliness requires comprehensive environmental monitoring, which should also meet the requirements of Green Chemistry. The broad spectrum of Green Chemistry principle applications should...
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Book Chapter in the Prime Archives in Chemistry: 2nd Edition (dissemination of knowledge)
PublikacjaTo cite a chapter in a book include: Jaroslaw Spychala. The CON−H….+NH2 Blue-Shifting H-Bond Stabilizing Effect on Z Secondary Amides and Cyclic System Conformational Rearrangement through an Alkylamine-Chain Migration Pathway. In: VSR Rajasekhar Pullabhotla, editor. Prime Archives in Chemistry: 2nd Edition. Hyderabad, India: Vide Leaf. 2022. https://doi.org/10.1155/2022/1707245
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Hoarfrost and rime chemistry in Poland - An introductory analysis from metrological perspective
PublikacjaW publikacji przedstawiono wyniki badań poziomów stężeń składników śladowych obecnych w próbkach osadów atmosferycznych (szronu i sadzi) zebranych na terenach wyraźnie różniących się pod względem położenia geograficznego jak również poziomem antropopresji. Zbadano wpływ czynników meteorologicznych tj. rodzaj mas powietrza, typ pola barycznego na chemizm tych form mokrej depozycji. Porównano skład chemiczny różnych form osadów atmosferycznych...
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The Chemistry of Mycophenolic Acid-Synthesis and Modifictions Towards Desired Biological Activity
PublikacjaDokonano przeglądu literatury chemicznej na temat metod syntezy kwasu mykofenolowego oraz jego pochodnych, a także zależności pomiędzy ich strukturą i aktywnością biologiczną.
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Rime and hoarfrost chemistry in Poland - an introductory analysis from meteorological perspective
PublikacjaPróbki szronu i sadzi pobierano odpowiednio w 6 i 3 miejscach, które reprezentują zarówno nizinne jak i górzyste części Polski. Niższe stężenia jonów stwierdzono zarówno w próbkach szronu jak i sadzi pobranych na terenie nizinnym. Wynika to ze stosunkowo wysokiej inwersji temperatury i mniej intensywnego krążenia atmosferycznego w tym regionie. Stwierdzono również różne wartości stosunku Na/Cl w próbkach sadzi i szronu zebranych...