Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "essential" wg kryterium: Temat

  Lista filtrów

Dostawca treści

Podbaza

Wyrównaj
Wyświetlanie 1-50 z 263
Tytuł:
On finite functions with non-trivial arity gap
Autorzy:
Shtrakov, Slavcho
Koppitz, Jörg
Powiązania:
https://bibliotekanauki.pl/articles/729003.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
essential variable
identification minor
essential arity gap
Opis:
Given an n-ary k-valued function f, gap(f) denotes the minimal number of essential variables in f which become fictive when identifying any two distinct essential variables in f.
We particularly solve a problem concerning the explicit determination of n-ary k-valued functions f with 2 ≤ gap(f) ≤ n ≤ k. Our methods yield new combinatorial results about the number of such functions.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2010, 30, 2; 217-245
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hildebrandts theorem for the essential spectrum
Autorzy:
Bracic, J.
Diogo, C.
Powiązania:
https://bibliotekanauki.pl/articles/255837.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
essential spectrum
Hildebrandt's theorem
essential numerical range
Opis:
We prove a variant of Hildebrandt's theorem which asserts that the convex hull of the essential spectrum of an operator A on a complex Hilbert space is equal to the intersection of the essential numerical ranges of operators which are similar to A. As a consequence, it is given a necessary and sufficient condition for zero not being in the convex hull of the essential spectrum of A.
Źródło:
Opuscula Mathematica; 2015, 35, 3; 279-285
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of chromium on ruminant health
Autorzy:
Zarczynska, K.
Krzebietke, S.
Powiązania:
https://bibliotekanauki.pl/articles/1192470.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
chromium
ruminants
essential nutrient
toxicity
Opis:
Chromium (Cr) is a micronutrient that occurs in the natural environment in different oxidation states. Natural compounds contain chromium in the +3 oxidation state, whereas chromic(VI) acid derivatives are industrial products with strong toxicity. Hexavalent chromium compounds can adversely affect the respiratory system and the gastrointestinal tract, cause skin changes, and exert carcinogenic, mutagenic, embryotoxic as well as teratogenic effects. Research indicates that both organic and inorganic trivalent chromium compounds improve carbohydrate, lipid, and protein metabolism. These compounds are found in many enzymes, and they influence antioxidant processes, regulation of immune responses, and the secretion of hormones and selected vitamins in the body. In animals, Cr has been found to increase fat-free body mass, improve reproductive parameters, enhance growth, increase feed conversion efficiency, boost immunity, and decrease mortality. It has been suggested that Cr supplements can intensify the effects of insulin, decrease the plasma levels of non-esterified fatty acids (NEFAs), decrease triglyceride concentrations in the liver, and improve glucose tolerance, thus improving the performance and productivity of cattle in the perinatal period. Symptoms of chromium deficiency, including decreased feed intake, lower weight gains, reproductive disorders, and higher lipid levels, are observed in cattle fed diets that are low in this nutrient, and in animals that are exposed to considerable and prolonged stress. In ruminants, chromium supplementation is recommended during thermal stress, in the perinatal period, and during infections.
Źródło:
Journal of Elementology; 2020, 25, 3; 893-903
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antifungal activity of PLA foils covered with ethylocelulose containing essential oils
Autorzy:
Łopusiewicz, Łukasz
Mizielińska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1113918.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
active coatings
antifungal properties
essential oils
Opis:
The purpose of the research work was to examine the antifungal properties of cumin, rosemary and fennel essential oils. The goal of the study was also to determine antifungal activity of coatings containing the essential oils. The results of the study demonstrated that cumin, rosemary and fennel essential oils exhibited antifungal properties. The most sensitive strains were Botrytis cinerea and Mucor circinelloides. The cumin oil was found to be the most active. The growth of Botrytis cinerea and Mucor circinelloides was not observed even on medium containing 0.1% of cumin oil. The growth of Aspergillus niger, Aspergillus clavatus and Rhizopus oryzae was not noticed on mediums containig 0.5% of the oil. The similar results were obtained for fennel essential oil. 0.5% concentration of the oil in medium inhibited the growth of Botrytis cinerea, Mucor circinelloides, Aspergillus clavatus, Rhizopus oryzae. The rosemary oil did not inhibited the growth of fungi strains in concentration of 0,1%.
Źródło:
World News of Natural Sciences; 2017, 12; 27-32
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anti-babesial potential and chemical composition of essential oil from yarrow Achillea millefolium
Autorzy:
Guz, L.
Wawrzykowski, J.
Adaszek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2087200.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Achillea millefolium
anitbabesial activity
essential oil
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 1; 79-84
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inhibitory activities of essential oils against Babesia canis
Autorzy:
Guz, L.
Ziętek, J.
Puk, K.
Adaszek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2087360.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Babesia canis
essential oil
natural product
Źródło:
Polish Journal of Veterinary Sciences; 2020, 23, 1; 161-163
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conception, Connotation, and Essential Predication: Peter Auriol’s Conceptualism to the Test in II Sententiarum, d. 9, q. 2, art. 1
Autorzy:
Fornasieri, Giacomo
Powiązania:
https://bibliotekanauki.pl/articles/1621436.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Peter Auriol
Connotation
Essential Predication
Conceptualism
Opis:
This paper comprises two parts. The first part is an introduction to Auriol’s moderate conceptualism, as it is presented in his Commentary on Book II of the Sentences, distinction 9, question 2, article 1. The second part is an edition of the text. In the introduction, I focus on Auriol’s use of the noetic tool of connotation. My thesis, in particular, is that connotation is a necessary prerequisite to his moderate conceptu alism. To this purpose, the first part of this introduction will be devoted to a brief presentation of Auriol’s conceptualism. In the second part, Auriol’s theory of essential predication will be presented. In the third part, I will present my claim that Auriol’s theory of essential predication can only be made sense of when read against the background of his theory of connotation as applied to intellectual cognition. Finally, I will offer a collation of Auriol’s Commentary on Book II of the Sentences, dis tinction 9, question 2, article 1, obtained by collating eight manuscripts, which hand down Auriol’s text, that is, Firenze, Biblioteca nazionale centrale, ms. Conv. Soppr. B.6.121, Firenze, ms. Conv. Soppr. A. 3.120, Napoli, Biblioteca nazionale, ms. VII.C.3, Padova, Biblioteca Antoniana, ms. 161, scaff. ix, Paris, Bibliothèque nationale de France, ms. latin 15867; Pelplin, Biblioteka Seminarium duchownego, ms. 46/85, Vaticano (Città del), Biblioteca Apostolica, ms. Borgiano 404, Vaticano (Città del), Biblioteca Apostolica, ms. Vat. lat. 942.
Źródło:
Analiza i Egzystencja; 2021, 54; 81-126
1734-9923
2300-7621
Pojawia się w:
Analiza i Egzystencja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the spectrum of periodic perturbations of certain unbounded Jacobi operators
Autorzy:
Sahbani, J.
Powiązania:
https://bibliotekanauki.pl/articles/256015.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
essential spectrum
spectral gap
periodic perturbation
Opis:
It is known that a purely off-diagonal Jacobi operator with coefficients [formula] has a purely absolutely continuous spectrum filling the whole real axis. We show that a 2-periodic perturbation of these operators creates a non trivial gap in the spectrum.
Źródło:
Opuscula Mathematica; 2016, 36, 6; 807-818
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of SPE for selective fractionation of essential oils constituents from plant materials
Autorzy:
Szewczyk, Joanna
Dybowski, Michał P.
Dawidowicz, Andrzej L.
Powiązania:
https://bibliotekanauki.pl/articles/764050.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
SPE
essential oils from herbs
fractionation
Opis:
Solid-phase extraction (SPE) is simple and inexpensive sample preparation procedure which can be applied for the isolation/fractionation of essential oil compounds from wide variety of samples, such as foodstuffs, biological and environmental. Due to the complex nature of the examined matrices and frequently low concentration level of target components, analytical procedures require the use of initial sample preparation stage. The paper shows the possibility of essential oil components fractionation from different plant materials using SPE method. The results presented in this paper shows that the proposed SPE procedure allows for easy and total fractionation of essential oil constituents (especially low-molecular oxygen compounds) from the sample matrix.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2015, 70, 2
2083-358X
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of water on the estimation of antioxidant properties of essential oils
Autorzy:
Olszowy, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/764073.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
antioxidant activity
essential oils
water impact
Opis:
This study discusses the influence of water content in measuring system on the estimation of antioxidant activity of essential oils. The presented data show that the antioxidant activity of thyme, clove, summer savory and basil essential oils strongly depends on water concentration what has important impact on the estimation of correct and reliable antioxidant activity of examined essential oils.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2015, 70, 2
2083-358X
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of essential oils and their combinations added to broiler diets on the mineral contents of some tissues and bone breaking strength
Autorzy:
Sevim, B.
Cufadar, Y.
Powiązania:
https://bibliotekanauki.pl/articles/2119510.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Zootechniczne
Tematy:
broiler
diet
essential oil
bone
mineral
Opis:
The current research was conducted to determine the effect of thyme (Thymus vulgaris L.), rosemary (Rosmarinus officinalis L.), and French lavender (Lavandula stoechas L.) essential oils and their combinations on serum, bone and excreta mineral content and bone breaking strength in broilers. A total of 640 day-old broiler chicks (Ross 308) were randomly allocated to eight treatment groups with five replicates each. The experimental diets were prepared by adding essential oils to the control diet as follows: control (0 mg/kg), thyme essential oil (50 mg/kg), rosemary essential oil (50 mg/kg), French lavender essential oil (50 mg/kg), thyme + rosemary (25+25 mg/kg), thyme + French lavender (25+25 mg/kg), rosemary + French lavender (25+25 mg/kg) and thyme + rosemary + French lavender (16,7+16,7+16,7 mg/kg). No difference was shown between the treatment groups in serum content of Ca, Mg, P or Zn (P > 0,05). Tibia Ca, Mg and P contents were statistically significant (P < 0,01), while tibia breaking strength was not significant (P > 0,05). Excreta Ca, Fe, Mg, Mn, P and Zn contents were significantly affected by the dietary treatments (P < 0,01), but excreta Cu content was not statistically significant (P > 0,05). The addition of thyme essential oil to the diet was effective in increasing tibia Ca, P and Mg content. The essential oils used, especially their binary mixtures, can be effective in reducing the amount of minerals excreted in the faeces.
Źródło:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2021, 17, 3; 59-69
1733-7305
Pojawia się w:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The obligations of public entities within the national cybersecurity system
Autorzy:
Karpiuk, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/2159295.pdf
Data publikacji:
2021-03-04
Wydawca:
Akademia Sztuki Wojennej
Tematy:
cybersecurity
information system
incident
essential service
Opis:
The lawmakers have imposed a number of obligations on public entities within the national cybersecurity system to ensure that information systems are resilient against actions which compromise the confidentiality, integrity, accessibility, and authenticity of the data being processed in these systems, or the related services provided by such systems. These obligations include incident reporting and handling by the appropriate public entities, and designating contact persons to communicate with national cybersecurity system entities. However, they do not apply to all public bodies – only those specifically named by the lawmakers. An important spectrum of measures in this regard involves public-entity incidents, i.e. occurrences which impair, or might impair, the quality of, or disrupt the performance of, a public function by a public entity. When fulfilling their obligations, it is particularly important for public entities to handle incidents, understood as taking measures to identify, register, analyse, classify, prioritise, contain, and remedy the incidents.
Źródło:
Cybersecurity and Law; 2020, 4, 2; 57-72
2658-1493
Pojawia się w:
Cybersecurity and Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antifungal Activity of Finished Chromium Tanned Leather Containing Thyme and Tea Tree Essential Oils
Autorzy:
Gendaszewska, Dorota
Wionczyk, Barbara
Bednarek, Agata
Boniecki, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2172003.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
essential oil
antifungal activity
leather
microorganisms
Opis:
Leather products provide an ideal environment for microbial growth. In order to prevent the appearance and spread of various types of microorganisms, it is treated with selected biocides and even essential oils. The aim of this paper was to investigate the antifungal activity of selected essential oils applied to finished chromium tanned leather which is intended for leather fancy products. Antifungal activity was evaluated according to the PN-EN 14119: 2005 standard. Four finished chromium tanned leathers were tested, each of which was soaked in the following essential oils: tea tree essential oil at a concentration of 1, 2 and 5% and thyme essential oil at concentration of 1, 2 and 5%. The results obtained indicated that leather finishing with thyme essential oil showed the antimicrobial activity against Aspergillus niger, Chaetomium globosum and Candida albicans strains. The application of 5% thyme essential oil to leather samples inhibited the growth of all strains tested. Using tea tree essential oil on leather samples showed a antimicrobial effect only against Candida albicans. The application of essential oils in the leather finishing process may be an alternative to biocides used in the tanning industry.
Źródło:
Fibres & Textiles in Eastern Europe; 2022, 3 (151); 41--45
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the fungicidal properties of essential oils from Leptospermum scoparium and Azadirachta indica in relation to selected fungi causing wood decay
Autorzy:
Świstak, Joanna
Betlej, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/2200175.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
essential oils
fungicides
wood rotting fungi
Opis:
Evaluation of the fungicidal properties of essential oils from Leptospermum scoparium and Azadirachta indica in relation to selected fungi causing wood decay. The publication presents the results of evaluation of the fungicidal effect of two essential oils from Leptospermum scoparium (manuka) and Azadirachta indica (neem) on fungi that cause the decomposition of Trametes versicolor and Coniophora puteana wood. Research results indicate that the growth of the tested fungi is clearly inhibited with the participation of the highest concentrations of essential oils used. At the same time, it was found that the action of neem oil was stronger compared to the Traetes versicolor fungus. In contrast, manuka essential oil has a stronger inhibitory effect on the growth of Coniophora puteana.
Ocena właściwosci grzybobójczych olejków z Leptospermum scoparium i Azadirachta indica w stosounku do wybranych grzybów powodujacych rozkład drewna. W publikacji przedstawiono wyniki oceny działania fungicydowego dwóch olejków eterycznych z L. scoparium (manuka) i A. indica (neem) na grzyby powodujące rozkład drewna Trametes versicolor i Coniophora puteana. Rezultaty badań wskazują, że wzrost testowanych grzybów jest wyraźnie hamowany przy udziale największych z zastosowanych stężeń badanych substancji chemicznych. Jednocześnie stwierdzono, że działanie olejku neem było mocniejsze w stosounku do grzyba T. versicolor. Z kolei olejek manuka działał silniej inhibujaco na wzrost grzyba C. puteana.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 110; 118--125
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obowiązki małżeńskie : istotne i nieistotne
Obligazioni matrimoniali - essenziali e non essenziali
Autorzy:
Sztychmiler, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/663295.pdf
Data publikacji:
1998
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
istotny obowiązek małżeński
nieistotny obowiązek małżeński
obowiązek małżeński
essential conjugal duty
non-essential conjugal duty
conjugal duty
Opis:
Obbligazioni matrimoniali essenziali sono importanti nelle diversi piani di vita della Chiesa. Nel piano canonico importantissimo e divisione tra obligazioni essenziali e non essentiali. Necessaria è anche ricerca della conoscenza ed accettazione delle obbligazioni matrimoniali. Questo è condizineo della vera preparazione alla realizzazione delle obbligazioni matrimoniali. Sono importanti nella vita dei coniugi e nie processi di nullità del matrimonio. Distinzione tra obblighi essenziali e non essenziali è importante per                     i pastori delle Chiese, per iudici e altri cooperatori dei tribunali ecclesiastici.
Źródło:
Ius Matrimoniale; 1998, 9, 3; 115-134
1429-3803
2353-8120
Pojawia się w:
Ius Matrimoniale
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical Composition and Antimicrobial Activity of Essential Oil of Wild and Cultivated Rosmarinus Officinalis from Two Moroccan Localities
Autorzy:
Elyemni, Majda
El Ouadrhiri, Faiçal
Lahkimi, Amal
Elkamli, Taha
Bouia, Abdelhak
Eloutassi, Noureddine
Powiązania:
https://bibliotekanauki.pl/articles/2068472.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
essential oil
Rosmarinus officinalis
antimicrobial activity
chemotype
Opis:
This research aimed to measure the impact of provenance on the yield, chemical profile and antimicrobial activity of Rosmarinus officinalis essential oil (EO) collected from cultivated and wild plants from two different regions in Morocco (Fez and Figuig). The chemical composition analysis was accomplished utilizing the GC-MS techniques. Sixteen compounds were identified in the EO of both samples, dominated by 1,8-cineole (32.18%), camphor (16.20%) and α-pinene (15.40%) in cultivated type. The α-pinene (51.19) presents the majority compound in the rosemary samples collected from the wild populations.The antimicrobial activity was investigated by using the broth dilution methods against yeast, four bacterial strains and two molds. Rosemary aerial part provided EO with the highest yield and comes from Figuig. The GC-MS analysis demonstrated the existence of two chemotypes of oils: α-pinene as well as 1,8-cineole/camphor/α-pinene. Both EOs showed good antimicrobial activity against all microbial strains. The essential oil produced by Fez plants was the most effective against the selected microorganisms having MIC values of 0.315–2.5 mg/L.
Źródło:
Journal of Ecological Engineering; 2022, 23, 3; 214--222
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the effectiveness of selected essential oils with mineral oil and spinosad on Dermanyssus gallinae
Autorzy:
Roczeń-Karczmarz, M.
Demkowska-Kutrzepa, M.
Zdybel, J.
Szczepaniak, K.
Studzińska, M.
Tomczuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/16539169.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Dermanyssus
mite
essential oil
mineral oil
spinosad
Opis:
It seems that essential oils can be a good ingredient in effective preparations against Dermanyssus gallinae. Dermanyssus affects animal health leading to financial losses and bird welfare issues. Collected mites were treated with various essential oils in four (20, 50, 80 and 100%) concentrations at a dose of 0.28 mg/cm2. The direct toxicity of the essential oils, mineral oil and spinosad to D. gallinae was tested in the laboratory. Eucalyptus oil was the most toxic essential oil in all concentrations to D. gallinae (87.6 - 97.6% mortality at all four concentrations), while geranium, pine and rosemary oils showed mortality rates of 14.2 - 68.2%. High mortality after 48 hours of contact was also recorded for the oil of cloves at 80% dilution (85.1% mortality), lavender 100% (94.2% mortality). Similarly, the thyme essential oil produced 83.5 - 93.2% mortality in three concentrations: 50, 80 and 100%. The mineral oil was the least effective oil against mites. Spinosad showed high effectiveness against D. gallinae.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 261-268
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of treating lettuce (Lactuca sativa L.) seeds with solutions of ethereal oils from camphor tree (Cinnamomum camphora L.) and patchouli plant (Pogostemon cablin Benth.) on their germination
Wpływ traktowania nasion sałaty (Lactuca sativa L.) roztworami olejków eterycznych z drzewa kamforowego (Cinnamomum camphora L.) i paczuli (Pogostemon cablin Benth.) na ich kiełkowanie
Autorzy:
Chen, W.
Hołubowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/11541931.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Cinnamomum camphora
Lactuca sativa
Pogostemon cablin
aetherolea zob.essential oil
camphor tree
essential oil
ethereal oil zob.essential oil
germination
lettuce
patchouli plant
seed
seed germination
solution
volatile oil zob.essential oil
seed quality
seed infestation
fungi
Opis:
One of the most important problems in horticultural seed science and technology nowadays is looking for new methods to improve seed quality. Especially interesting are the ones, in which compounds of natural origin are used. One of such groups is ethereal oils from plants. The commercial seed samples of lettuce (Lactuca sativa L. ‘Dumka’) were soaked in 9 different treatments of 5% alcoholic solution of camphor tree (Cinnamomum camphora L.) ethereal oil and 9 different treatments of 5% alcoholic solution of patchouli plant (Pogostemon cablin Benth.) ethereal oil. Then the seeds were routinely tested for seed germination, the length of the received seedlings was also measured and the seeds health status was evaluated. The tested ethereal oils had no effect on the germination of lettuce seeds. However, soaking the seeds in the ethereal oils solutions did decrease the percentage of dead seeds in the tested samples. Soaking of the seeds in the ethereal oils solutions also increased the percentage of healthy ungerminated seeds. Treating the seeds with the concentrations of the ethereal oils solutions, although had no effect on their germination, still shortened the length of seedlings. Moreover, the used ethereal oils lowered the amount of identified Alternaria alternata and Cladosporium sphaerospermum fungi on the seeds.
Jednym z najważniejszych problemów nasiennictwa ogrodniczego dziś jest poszukiwanie nowych metod poprawy jakości nasion. Szczególnie interesujące są te z nich, w których wykorzystuje się substancje naturalne. Jedną z takich grup są olejki eteryczne z roślin. Nasiona handlowe sałaty (Lactuca sativa L.) odmiany Dumka potraktowano na 9 różnych sposobów 5% alkoholowym roztworem olejku eterycznego z drzewa kamforowego (Cinnamomum camphora L.) i na 9 różnych sposobów 5% alkoholowym roztworem olejku eterycznego z paczuli (Pogostemon cablin Benth.). Następnie nasiona poddano rutynowej ocenie kiełkowania, zmierzono długość otrzymanych siewek i oceniono zdrowotność nasion. Badane olejki eteryczne nie wpłynęły na kiełkowanie nasion sałaty, natomiast zmniejszyły odsetek martwych nasion w badanych próbach. Moczenie nasion w badanych roztworach olejków zwiększyło także odsetek nasion zdrowych niekiełkujących. Traktowanie nasion roztworami olejków eterycznych o wyższych stężeniach, choć nie wpłynęło na ich kiełkowanie, to jednak skróciło długość otrzymanych z nich siewek. Ponadto stosowane olejki eteryczne obniżyły ilość oznaczonych na nasionach grzybów: Alternaria alternata i Cladosporium sphaerospermum.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2010, 09, 3; 69-83
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of the essential oil from cone-berries of Juniperus communis L. (Cupressaceae)
Charakterystyka olejku eterycznego uzyskiwanego z szyszkojagód jałowca pospolitego Juniperus communis L. (Cupressaceae)
Autorzy:
Majewska, E.
Kozłowska, M.
Kowalska, D.
Gruczynska, E.
Powiązania:
https://bibliotekanauki.pl/articles/72358.pdf
Data publikacji:
2017
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
essential oil
Juniperus communis
Cupressaceae
folk medicine
Opis:
Juniperus communis L. (Cupressaceae) is a plant widely cultivated in the Northern hemisphere. Juniper berries, the fruit of Juniperus communis L. are a highly valued, essential oil-rich plant material used traditionally in folk medicine as antiseptic, diuretic, antirheumatic, anti-inflammatory, antibacterial and antifungicidal agent. This paper reviews information on extraction methods of the essential oil from the juniper berries, its chemical composition and antimicrobial as well as antioxidant properties.
Jałowiec pospolity Juniperus communis L. (Cupressaceae) jest rośliną powszechnie występującą na całej półkuli północnej. Szyszkojagoda jałowca jest surowcem roślinnym dostarczającym cennego olejku eterycznego wykorzystywanego głównie w lecznictwie jako środek o właściwościach bakteriobójczych, moczopędnych, przeciwzapalnych, przeciwreumatycznych oraz przeciwgrzybiczych. W pracy przedstawiono charakterystykę olejku eterycznego uzyskiwanego z szyszkojagód jałowca pospolitego, metody jego ekstrakcji, skład chemiczny oraz właściwości przeciwbakteryjne i przeciwgrzybicze, jak również przeciwutleniające.
Źródło:
Herba Polonica; 2017, 63, 3
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interactions between Clotrimazole and selected essential oils against Malassezia pachydermatis clinical isolates
Autorzy:
Bohmova, E.
Conkova, E.
Harcarova, M.
Sihelska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2087584.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antimycotic
antifungal
synergism
clotrimazole
essential oil
checkerboard
Źródło:
Polish Journal of Veterinary Sciences; 2019, 1; 173-175
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology of conformity assessment with the essential requirements for electrotechnical products
Autorzy:
Małysa, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2064805.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
conformity assessment methodology
essential requirements
electrotechnical products
Opis:
The article presents a methodical approach to conformity assessment related to the introduction, putting into service on the European market of electrical or electrotechnical products. The developed methodology can be an effective control tool, allowing to assess whether all activities within the conformity assessment performed by the manufacturer have been carried out. The aim of the study is to present the possibility of adapting the developed methodology of approach to the assessment of compliance with the essential requirements in industrial conditions. In the case of the industry being analyzed, the basis for conformity assessment is the requirements set out in the New Approach Directives. The essential requirements set out in New Approach Directives must be met if the product is placed on the market or putting into service. The article presents the implementation of the conformity assessment process based on harmonized standards with the directives related to the product in question. The application of harmonized standards in the conformity assessment process allowed the manufacturer to use the so-called principles of presumption of conformity, referred to in the Act on conformity assessment systems and market surveillance.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 265--273
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CHEMICAL COMPOSITION OF THE ESSENTIAL OIL AND FLAVONOIDS OF THYMUS SERPYLLUM L., GROWING ON TERRITORY OF THE EAST KAZAKHSTAN
Autorzy:
Tazabayeva, Kulyash A.
Sylibaeva, Batiyash
Powiązania:
https://bibliotekanauki.pl/articles/895645.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
essential oils
flavonoids
anticancer activity
Thymus serpyllum
Opis:
Thymus serpyllum L. (T.serpyllum) has a great interest as a potential plant component, which is used in the production of fermented milk products with anticancer effect. The plant material was collected at the flowering stage. Chemical composition of essential oil and flavonoids from the aerial parts of the T. serpyllum, grown in the Southern Altai of the East Kazakhstan region, has been investigated for the first time. Output of the essential oil received from the aerial part of the plant in the flowering stage was on average 0,2%. Forty-one compounds were identified in T. serpyllum essential oil, which accounts for 96, 1% of the total oil. The main components of the oil were thymol (41,8%), γ-terpinene (15,3%), o-cymene (10,9%). Apart from the composition of essential oils, there were shown some flavonoids, such asapigenin 7 glucoside (0.24 % of dried plant material), luteolin (0,039 %), quercetin (0,006 %), which demonstrated a cytotoxic effect on cancer cells. In our experiments, luteolin had greater cytotoxic effect on cancer cells HCT-15 than quercetin. IC50 value of quercetin (100 μM) was higher than that of luteolin (50 μM).
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1329-1337
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe formy w dramaturgii Witkacego i wynikające stąd spory O „rozmowach istotnych”
New Forms in the Dramatic Works of Witkacy and the Resultant Disputes: On ‘Essential Conversations’
Autorzy:
Kurowska, Sara
Powiązania:
https://bibliotekanauki.pl/articles/1816630.pdf
Data publikacji:
2021-02
Wydawca:
Instytut im. Jerzego Grotowskiego we Wrocławiu
Tematy:
essentiality
essential conversations
drama
performance studies
agon
Opis:
The article attempts to present essentiality – one of the concepts used most frequently by Witkacy – as a performative category. The artist was aware that essentiality would not have the final form in the dictionary of intellectual concepts, that it could not be fixed within stable definitions, but continued his efforts to push the boundaries of the human mind as far as possible. The paper analyses Witkacy’s epistemological tactics using Anna Krajewska’s dramatic theory of literature, which draws, among other things, on the achievements of performative discourse. Seen in this perspective, Witkacy’s ‘essential conversations’ can be regarded as dramatic forms which establish essentiality in constant motion and give it the character of a processual event – of something uncertain in a state of unreadiness, something attempted.
Źródło:
Didaskalia. Gazeta Teatralna; 2021, 161; 227-254
2720-0043
Pojawia się w:
Didaskalia. Gazeta Teatralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of fungistatic properties of selected essential oils obtained from the Lamiaceae family plants
Autorzy:
Andres, Bogusław
Betlej, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/2200513.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
essential oil
natural wood preservatives
Coniophora puteana
Opis:
Evaluation of fungistatic properties of selected essential oils obtained from plants from the Lamiaceae spp. The paper presents the results of research on fungistatic properties of selected essential oils from plants from the Lamiaceae spp. against the fungus Coniophora puteana. The influence of solutions of essential oils has been analyzed: mint, rosemary and thyme on the growth was analyzed. It has been shown that essential oils have fungistatic properties.
Ocena właściwości fungistatycznych wybranych olejków eterycznych pozyskanych z roślin z rodziny Lamiaceae. W artykule przedstawiono wyniki badań właściwości fungistatycznych wybranych olejków eterycznych roślin z rodziny Lamiaceae wobec grzyba Coniophora puteana. Przeanalizowano wpływ roztworów olejków eterycznych: miętowego, rozmarynowego oraz tymiankowego na wzrost grzybni. Wykazano, że olejki eteryczne posiadają właściwości fungistatyczne.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 105; 30--37
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Entities Involved in the Policy of Ensuring the Security of Network and Information Systems in the Light of the NIS 2 Directive (Part 1)
Autorzy:
Chałubińska-Jentkiewicz, Katarzyna
Nowikowska, Monika
Powiązania:
https://bibliotekanauki.pl/articles/31341968.pdf
Data publikacji:
2024-05-09
Wydawca:
Akademia Sztuki Wojennej
Tematy:
cybersecurity
incident
ENISA
essential entities
important entities
Opis:
The number, magnitude, sophistication, frequency and impact of incidents are increasing and present a major threat to the functioning of network and information systems. As a result, incidents can impede the pursuit of economic activities in the internal market, generate financial loss and cause significant damage to the Union’s economy and society. Therefore, effectiveness in cybersecurity is becoming increasingly vital for the proper functioning of the internal market. On December 14, 2022, the EU legislator adopted a directive on measures for a high common level of cybersecurity across the Union, called the NIS 2 Directive. The new NIS 2 directive aimed to lay down mechanisms for effective cooperation among the responsible authorities in each Member State and to update the list of sectors and activities subject to cybersecurity obligations. The article reviews the entities involved in the policy of ensuring the security of network and information systems in the light of the NIS 2 directive.
Źródło:
Cybersecurity and Law; 2024, 11, 1; 5-20
2658-1493
Pojawia się w:
Cybersecurity and Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
LA PACE E LA GIUSTIZIA COME “DIRITTI ESSENZIALI” DELL’UOMO
PEACE AND JUSTICE AS “BASIC RIGHTS” OF MAN
Autorzy:
Parente, Ferdinando
Powiązania:
https://bibliotekanauki.pl/articles/546533.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
peace;
justice;
environmental ecology;
human ecology;
essential rights
Opis:
The link between peace and justice, in the system of sources of Italian law is often expressed through the two antithetic categories, namely the idea of war and the concept of social injustice. In fact, the Constitution sometimes makes a direct reference to peace; other times, recalls the peace in an indirect way, through its opposite, war, that repudiates firmly. In the history of humanity, the issues of social injustice have been contributory causes expressions of dissatisfaction, in the face of existential human rights ignored, injury and lack of respect for the dignity of the person. Therefore, the phenomenon of peace has become more not only a legal but also economic, ethical and social importance. In this perspective, the right to peace and the right to social justice may be included among the essential rights of man, worthy of absolute protection and unconditional.
Źródło:
Civitas et Lex; 2018, 4(20); 43-50
2392-0300
Pojawia się w:
Civitas et Lex
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spin trapping studies of essential oils in lipid systems
Autorzy:
Makarova, K.
Drązikowska, K.
Suska, B.
Zawada, K.
Wawer, I.
Powiązania:
https://bibliotekanauki.pl/articles/147786.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
spin trapping ESR
essential oils
DFT calculations
lipids
Opis:
In the present work, we report the results of a spin trapping ESR study of four essential oils widely used for skin care products such as creams and bath salts. The studied essential oils are Rosmarini aetheroleum (rosemary), Menthae piperitae aetheroleum (mint), Lavandulae aetheroleum (lavender), and Thymi aetheroleum (thyme). Fenton reaction in the presence of ethanol was used to generate free radicals. The N-tert- -butyl-α-phenylnitrone (PBN) was used as a spin trap. In the Fenton reaction, the rosemary oil had the lowest effect on radical adduct formation as compared to the reference Fenton system. Since essential oils are known to be lipid soluble, we also conducted studies of essential oils in Fenton reaction in the presence of lipids. Two model lipids were used, namely 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1,2-dipalmitoyl-sn- -glycero-3-phosphocholine (DPPC). The obtained results suggested that in the presence of DOPC lipids, the •OH and PBN/•CHCH3(OH) radicals are formed in both phases, that is, water and lipids, and all the studied essential oils affected the Fenton reaction in a similar way. Whereas, in the DPPC system, the additional type of PBN/X (aN = 16.1 G, aH = 2.9 G) radical adduct was generated. DFT calculations of hyperfi ne splittings were performed at B3LYP/6-311+G(d,p)/EPR-II level of theory for the set of c-centered PBN adducts in order to identify PBN/X radical.
Źródło:
Nukleonika; 2015, 60, No. 3, part 1; 461-468
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddziaływanie naturalnych olejków eterycznych na wzrost Phytophthora spp. – patogenów wyizolowanych z sadzonek pelargonii
The influence of natural essential oils on the growth of Phytophthora spp. Isolated from pelargonium cuttings
Autorzy:
Machura, M.
Kurzawińska, H.
Powiązania:
https://bibliotekanauki.pl/articles/399722.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
olejki eteryczne
pelargonia
Phytophthora spp.
essential oils
pelargonium
Opis:
Rośliny ozdobne odgrywają ważną rolę w życiu człowieka, pozytywnie wpływają na psychikę i poprawiają samopoczucie przebywających w ich otoczeniu ludzi. Rośliny produkują tlen, stanowią barierę dla kurzu i hałasu, obniżają temperaturę i zwiększają wilgotność powietrza, przez co pozytywnie oddziałują na mikroklimat. Niezmienna atrakcyjność pelargonii, łatwość w uprawie i pielęgnacji, obfitość kwitnienia od wiosny aż do późnej jesieni i jej walory dekoracyjne sprawiają, że znajduje ona wszechstronne zastosowanie. Celem badań było określenie składu gatunkowego zasiedlającego chore sadzonki pelargonii, identyfikacja wyosobnionych izolatów grzybowych i organizmów grzybopodobnych, zbadanie chorobotwórczości wybranych izolatów oraz ocena w warunkach in vitro wpływu wybranych olejków (kminkowy, cytrynowy, mandarynkowy i z drzewa herbacianego) na wzrost liniowy grzybni: Phytophthora cryptogea i Ph. nicotianae var. nicotianae. Jako standardowy preparat chemiczny zastosowano Previcur Energy 840 SL. Spośród wyizolowanych mikroorganizmów zasiedlających chore rośliny pelargonii najczęściej występowały gatunki rodzajów: Phytophthora, Fusarium, Botrytis, Cylindrocladium, Alternaria i Cylindrocarpon. Najwyższą skutecznością w stosunku do Ph. cryptogea Ph. nicotianae var. nicotianae charakteryzował się olejek cytrynowy (stężenie 0,1%, 1%) oraz olejek kminkowy zastosowany w stężenie 1%.
Ornamental plants play an important role in human life. Plants positively influence the psyche and improve the well-being of people around them. They produce oxygen, provide a barrier to dust and noise, lower the temperature and increase air humidity, thereby positively impacting the microclimate. The unmatched appeal of pelargonium, ease of cultivation and care, abundance of flowering from spring to late autumn and its decorative qualities make it a universal application. The aim of the study was to isolate the microorganisms that inhabit the cuttings of pelargonium, identify fungal isolates, investigate the pathogenicity of selected isolates and evaluate the influence of certain essential oils (Carum carvi L. essential oils, Citrus limon L. essential oils, Citrus reticulatae aetheroleum essential oils, essential oil of tea tree ) in in vitro circumstances on the linear growth of the mycelium: Phytophthora cryptogea, Phytophthora nicotianae var. nicotianae. Previcur Energy 840 SL was used as a standard chemical protection. The most numerous isolated fungi were: Phytophthora, Botrytis, Cylindrocladium, Alternaria and Cylindrocarpon. The highest efficiency in relation to Phytophthora cryptogea characterized the Citrus limon L. essential oils (concentration 0.1% and 1%) and Carum carvi L. essential oil (concentration 1%).
Źródło:
Inżynieria Ekologiczna; 2017, 18, 5; 84-91
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antimicrobial Activity of the Essential oil of Thymus capitatus against Helicobacter pylori
Autorzy:
güvenir, meryem
Hanoglu, Azmi
Hanoglu, Duygu
Suer, Kaya
Baser, Husnu Can
Ozkum Yavuz, Dudu
Sanlıdag, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/895252.pdf
Data publikacji:
2020-02-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
helicobacter pylori
Thymus capitatus
in vi
essential oil
Opis:
Helicobacter pylori (H.pylori) is an infective agent and the main resourceful factor of chronic, active ot type B gastritis, peptic and duodenal ulcer, gastric carcinoma and mucosa-associated lymphoid tumors. Nowadays, pharmological treatment of H. pylori infections attract attention beside antibiotic treatment. The aim of this study is to analyse the chemical composition of the essential oils of Thymus capitatus and the antimicrobial activity against H. pylori. Aerial parts of wild growing plant materials were collected during flowering stage from three different locations. Essential oil composition analyses were performed simultaneously by GC-FID and GC-MS systems. The antimicrobial activity of the essential oil were tested by broth dilution method. The thymol percentage was determined as more than half of the essential oil composition of Thymus capitatus-Yedidalga (51.9%) and Thymus capitatus –Yıldırım (57.1%); however, the composition of thymol was 47.2% followed by 15.1% (p-cymene), 10.0% (-terpinene) and 5.7% (carvacrol) for Thymus capitatus-Boğaz/Girne.The essential oil from Thymus capitatus- Boğaz/Girne showed the lowest MIC and MBC values and the strongest bactericidal activity against H. pylori compared to the other tested essential oils. Bactericidal efficacy of essential oil of Thymus capitatus on H. pylori could have been affected due to the varied rates of major compounds. Thymus capitatus essential oil could be an alternative way for the treatment of H. pylori infections.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 155-160
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DIPSACUS FULLONUM L. LEAVES AND ROOTS - IDENTIFICATION OF THE COMPONENTS OF THE ESSENTIAL OILS AND ALPHA-AMYLASE INHIBITORY ACTIVITIES OF METHANOLIC EXTRACTS
Autorzy:
Witkowska-Banaszczak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/895320.pdf
Data publikacji:
2018-08-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
essential oil composition
methanolic extract
alpha-amylase inhibition
Opis:
Abstract: Dipsacus fullonum L. syn. D. sylvestris is a biennial plant from the Dipsacaceae family. It grows in Europe, North Africa and Asia Minor. It has been used in folk medicine mainly to treat Lyme disease. This study was undertaken to identify and compare the components of the essential oils from dried and fresh roots, which are usually applied as medicinal agents, as well as those of the essential oils from dried and fresh leaves, used less frequently. The essential oils from the Dipsacus fullonum leaves and roots were analysed by the GC and GC-MS analysis. 18 components were identified in the essential oil from the fresh leaves, whereas 37 were recognised in the oil from the dried leaves; 10 components were identified in the essential oil from the fresh roots and 40 in that from the dried roots. Phytol was the main component in the essential oil from the leaves, whereas n-hexadecanoic acid was predominant in the roots. The α -amylase inhibition has been proven for methanolic extracts of D. fullonum leaves and roots. The strongest activity was demonstrated by the extract from fresh leaves of D. fullonum and showed an effect about one hundred times weaker than acarbose.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 4; 951-957
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie olejku eterycznego z sosny do maskowania uciążliwych zapachów wydzielających się w procesie mechanicznego odwadniania komunalnych osadów ściekowych
The use of pine essential oil for masking the odors emitted in the process of mechanical dewatering of municipal sewage sludge
Autorzy:
Kowalczyk, A.
Piecuch, T.
Andriyevska, L.
Powiązania:
https://bibliotekanauki.pl/articles/1818743.pdf
Data publikacji:
2013
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
zastosowanie olejku
osady ściekowe
essential oil
sewage sludge
Opis:
The main objective of this study was to provide a method for reducing odor nuisance and checking to what extent the essential oil affects the quality of the mechanical dewatering of municipal sewage sludge. Pine essential oil was used as a substitute of the flocculant in the process of centrifugal sedimentation of sewage sludge. The study was divided into two stages. In the first stage of the research was essential oil from pine needles was produced in the process of steam distillation. In the second part of the research process of mechanical dewatering of municipal sewage sludge on a laboratory sedimentation centrifuge MPW-350 was carried out with the use for this process pine essential oil (produced in the first stage of the study) and flocculant ZETAG® 9048FS. Constant parameters of centrifugal sedimentation were: centrifugation time was t [min.] (assumed centrifugation time t = 1 min.) and centrifuge speed n [1/min.] (assumed n = 2400 1/min.). Independent variable parameters were: dose of flocculant C [ml of flocculant solution /dm3 of sludge] and the dose of essential oil D [cm3 /100 cm3 of sludge]. Based on extensive investigations carried out, it was found that the pine essential oil effectively neutralizes unpleasant odors emitted in the process of mechanical dewatering of municipal sewage sludge during laboratory centrifuge sedimentation. With increasing doses of the pine essential oil time of effective neutralization of unpleasant odors increases, both in the dewatered sludge and effluent. Dose of added flocculant affects the time of effective neutralization of odors by pine essential oil. Together with an increase of flocculant dose, duration of odor neutralization in sludge and effluent decreases. With the increase in the dose of essential oil water content in the sludge decreases. This relationship is maintained for all used concentrations of flocculant dose. With the increase in the dose of essential oil solids concentration in effluent decreases. This relationship is maintained for all used concentrations of flocculant dose. Application of the results of this study requires a technical and economic analysis and determination of the feasibility of the proposed method. This will be the subject of aseparate publication.
Źródło:
Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 1; 807-822
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plants as a treasury of fragrant substances for food industry and perfumery
Autorzy:
Danel, Andrzej
Puła, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2176801.pdf
Data publikacji:
2019-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
essential oils
extraction techniques
food additives
fragrant substances
Opis:
Artykuł poświęcony jest niektórym aspektom substancji zapachowych pochodzenia roślinnego, stosowanych jednocześnie w przemyśle spożywczym i perfumeryjnym. Od starożytności opracowano wiele technik ekstrakcji w celu uzyskania olejków eterycznych. Niektóre z nich są nadal stosowane. Nowe ekstrakcje, takie jak: mikrofalowe lub ultradźwiękowe, są coraz bardziej popularne i pozwalają zaoszczędzić czas oraz koszty. Niezależnie od procedury powstałe olejki eteryczne są źródłem wielu związków chemicznych, tzw. izolatów. Mogą one być stosowane jako dodatki do żywności lub jako materiały wyjściowe do syntezy organicznej. Niektóre substancje zapachowe występują w bardzo małych ilościach w materiale roślinnym, dlatego ekstrakcja nie jest opłacalna ekonomicznie, ale po ustaleniu ich struktur chemicznych i opracowaniu procedur syntetycznych, w niektórych przypadkach są one pozyskiwane na skalę przemysłową. Substancje opisane poniżej to tylko niewielka część z 2000-3000 pachnących cząsteczek, które sprawiają, że nasze życie jest przyjemniejsze, zarówno w jedzeniu, jak i perfumach.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2019, 4; 149-160
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The potential application of Origanum dubium Boiss. essential oil as a seed protectant against bean and tomato seed-borne bacterial pathogens
Autorzy:
Basim, H.
Turgut, K.
Kaplan, B.
Basim, E.
Turgut, A.
Powiązania:
https://bibliotekanauki.pl/articles/12687443.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
bean
tomato
Origanum
Origanum dubium
antimicrobial activity
essential oil
essential oil treatment
plant protection
seed protection
bacterial pathogen
Opis:
Origanum dubium is a valuable wild oregano species of the natural flora of Antalya, Turkey. In this study, we extracted essential oil (EO) by hydro-distillation of the aerial parts of selected O. dubium chemotype with highest EO content, and analyzed by gas chromatography/mass spectrometry. Carvacrol was the primary component (85.9%) among 24 different compounds in the EO. The volatile test showed minimum inhibitory effect of the EO against Xanthomonas axonopodis pv. vesicatoria, Clavibacter michiganensis subsp. michiganensis, Xanthomonas axonopodis pv. phaseoli, Xanthomonas axonopodis pv. phaseoli var. fuscans, and Pseudomonas syringae pv. tomato, at 309, 303, 318, 254, and 901 µL/mL, respectively. A 1-hour treatment of bean and tomato seeds in the volatile phase of the EO effectively sterilized the seeds from bacterial pathogens without inhibiting their germination. To the best of our knowledge, this is the first study on the potential for the use of O. dubium EO as a seed protectant against bean and tomato seed-borne bacterial pathogens.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 79-86
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of distillation time and distillation apparatus on the chemical composition and quality of Lavandula angustifolia Mill. essential oil
Autorzy:
Wesołowska, Aneta
Jadczak, Dorota
Zyburtowicz, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/27315651.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Lavandula angustifolia essential oil
distillation time
distillation apparatus
GC-MS
gas chromatography-mass spectrometry
quality of lavender essential oil
Opis:
In the study, the influence of distillation time as well as distillation apparatus on the chemical composition and quality of lavender (Lavandula angustifolia Mill.) essential oil were investigated. Two different types of distillation apparatuses: Deryng (popular in Poland) and Clevenger-type (recommended by European Pharmacopoeia) were used for the isolation of the essential oil from dried lavender flowers (Lavandulae flos). Moreover, different distillation times (2, 3 and 4 hours) were also applied. The chemical composition of the isolated oils, determined by gas chromatography coupled with mass spectrometry (GC-MS), revealed the dominance of linalool (11.55–17.19%) and linalyl acetate (12.84–16.78%) in the all analyzed samples. Other important constituents were: caryophyllene oxide (5.66–7.35%), lavandulyl acetate (4.64–5.40%) and borneol (4.62–5.51%). On the basis of the obtained data it was proved that the distillation time and distillation apparatus affect the amounts of some constituents in the lavender oil.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 4; 36--43
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected commodity characteristics of essential oils used for healing purposes
Autorzy:
Radziejowska, Maria
Niciejewska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/23944774.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
aromatherapy
method of extracting essential oils
labeling of essential oils packaging
aromaterapia
metoda ekstrakcji olejków eterycznych
opakowania
olejki eteryczne
Opis:
The use of an essential oil with a therapeutic purpose depends on many conditions. First of all, only substances whose quality meets the guidelines of the modern, current Polish standard PN-EN ISO 9235: 2021-12 (ICS 71.100.60 - Essential oils) and which are classified as essential oils can be used in aromatherapy, i.e. for therapeutic purposes. A very important role in obtaining essential oils of high therapeutic quality is played by the place and method of cultivation of the plant from which the oil is extracted, safety in maintaining the purity of the essential oil during its extraction, and compliance with the special requirement to label the essential oil package. Fragrance, synthetic and natural oils do not meet these requirements and cannot be used for therapeutic purposes.
Źródło:
System Safety : Human - Technical Facility - Environment; 2022, 4, 1; 170-178
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Essential facilities doctrine in European Union Law
Autorzy:
Zalewska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/684885.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
European Union Law
American law
Essential facilities doctrine
Opis:
Formed at the end of the nineteenth century in the United States, the essential facilities doctrine was created to prevent the refusal of access to certain key equipment, which is used as an instrument to secure the dominant position of the undertaking in those markets where the emergence of competition is strictly related to obtaining access to key device. The author describes the initiation in the 1970’s of the acquisition of the American doctrine by European Union law by focusing on the role of the European Commission and the Court of Justice of the European Union in this process. Both American and European prsemises for an application of the essential facilities doctrine are presented, as well as its advantages and disadvantages.
Źródło:
Adam Mickiewicz University Law Review; 2013, 2; 167-183
2450-0976
Pojawia się w:
Adam Mickiewicz University Law Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Losses of essential oils and antioxidants during the drying of herbs and spices. A review
Straty olejków eterycznych oraz związków o właściwościach przeciwutleniających podczas suszenia ziół i przypraw. Przegląd
Autorzy:
Prusinowska, R.
Smigielski, K.
Powiązania:
https://bibliotekanauki.pl/articles/5330.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
essential oil
antioxidant
polyphenol
loss
drying
herb
spice
Opis:
Drying is the most common and also the simplest method of preserving fresh plant materials. This process greatly extends the life of the product by the removal of water, which decreases the rate of chemical and enzymatic reactions, or even inhibits them. The drying step can cause a change in appearance, taste, color and consistency, as well as reduce the quantity of essential oils, polyphenols, pigments and vitamins. These changes can be significantly reduced by using suitable drying techniques, depending on the material. The choice of the technique should be based on knowledge of the biological, physical and chemical characteristics of the raw material. The paper presents the effects of drying on the quantitative loss of essential oils and compounds with antioxidant properties, as well as changes in the antioxidant properties of selected herbs and spices dried by different methods. Both, the food industry and the cosmetics or pharmaceuticals industry generates a demand for high-quality raw materials, and hence research is being conducted both on preservation methods and on their impact on the quality of the obtained material. It seems that the new technology of drying material in a fluidized bed, greatly reduces or even eliminates the disadvantages of current procedures.
Suszenie jest najczęściej stosowaną i zarazem najprostszą metodą konserwacji świeżych surowców roślinnych. Proces ten znacznie przedłuża trwałość produktu, poprzez usunięcie wody, co zmniejsza szybkość bądź nawet hamuje reakcje chemiczne i enzymatyczne. Etap suszenia może powodować zmiany w wyglądzie, smaku, kolorze czy konsystencji, jak również obniżać ilość olejków eterycznych, polifenoli, barwników czy witamin. Zmiany te można w znacznym stopniu ograniczyć, stosując odpowiednie techniki suszenia w zależności od suszonego materiału, których dobór powinien wynikać ze znajomości biologicznych, fizycznych i chemicznych właściwości surowca. W pracy przedstawiono wpływ suszenia na straty olejków eterycznych i związków o właściwościach przeciwutleniających oraz zmiany właściwości antyoksydacyjnych wybranych ziół i przypraw, suszonych różnymi metodami. Zarówno przemysł spożywczy jak i kosmetyczny czy farmaceutyczny, wykazuje zapotrzebowanie na surowce wysokiej jakości, i stąd wskazane jest prowadzenie badań zarówno nad metodami utrwalania jak i nad określeniem ich wpływu na jakość uzyskanego surowca. Wydaje się, że nowa technologia suszenia surowców w złożu fluidalnym w znacznym stopniu ogranicza a nawet eliminuje wady obecnie stosowanych procedur.
Źródło:
Nauki Inżynierskie i Technologie; 2015, 2(17)
2449-9773
2080-5985
Pojawia się w:
Nauki Inżynierskie i Technologie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interrelationships among selected essential elements in medicinal plant raw materials and their water-extractable forms
Relacje pomiedzy wybranymi pierwiastkami niezbędnymi w roślinnych surowcach leczniczych a ich formami ekstrahowanymi wodą
Autorzy:
Konieczynski, P.
Wesolowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/72267.pdf
Data publikacji:
2013
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
interrelationship
essential element
medicinal plant
raw material
statistical analysis
Opis:
In the study, the relationships were investigated among N, P, Fe, Zn, Mn and Cu, in medicinal plant raw materials (herbal bags) and their water-soluble chemical forms in infuses. 42 independent samples of plant materials were chosen, represented by different morphological plant parts as herbs, leaves, flowers and fruits. The elements were determined by UV/Vis spectrometry (non-metals), and FAAS (metallic elements) after previous mineralization of plant samples (total concentrations), and directly in herbal teas (water-extractable forms). Most frequently the correlations between non-metals and Zn and Mn occurred, both between their total contents the water-extractable forms. Statistically significant correlations were also found in pairs: Zn-Mn, Fe-Zn, Mn-Fe, and Cu-Zn. Application of multivariate analysis revealed that cluster analysis grouped the studied samples into clusters with similar levels of the analyzed elements, and principal component analysis allowed the identification of water-extractable Zn, P-PO4 and water-extractable Cu as the most crucial factors determining the differentiation of the studied plant samples.
W trakcie badań określono relacje pomiędzy N, P, Fe, Zn, Mn i Cu w roślinnych surowcach leczniczych (torebkach) a ich rozpuszczalnymi w wodzie formami chemicznymi w naparach. Wybrano 42 niezależne próbki surowców roślinnych, reprezentowanych przez takie różne części morfologiczne roślin jak ziela, liście, kwiaty i owoce. Pierwiastki oznaczono spektrofotometrycznie w zakresie widzialnym (niemetale) i metodą FAAS (pierwiastki metaliczne) po uprzedniej mineralizacji próbek roślinnych (całkowita zawartość) oraz bezpośrednio w naparach (formy ekstrahowane wodą). Najczęściej występowały korelacje pomiędzy niemetalami a Zn i Mn, zarówno między całkowitą ich zawartością, jak i formami rozpuszczalnymi w wodzie. Statystycznie istotne korelacje stwierdzono również między parami: Zn-Mn, Fe-Zn, Mn-Fe i Cu-Zn. Zastosowanie analizy wieloparametrowej dostarczyło informacji o tym, że analiza skupień pogrupowała badane próbki w klastery o zbliżonym poziomie analizowanych pierwiastków, natomiast analiza głównych składowych pozwoliła na identyfikację Zn ekstrahowanego wodą, P-PO4 oraz Cu ekstrahowanej wodą, jako najbardziej istotnych czynników wpływających na zróżnicowanie badanych próbek roślinnych.
Źródło:
Herba Polonica; 2013, 59, 2
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical Composition and Antibacterial activity of Essential Oil of Marrubium vulgare from Eastern Algeria
Autorzy:
Abadi, A.
Hassani, A.
Powiązania:
https://bibliotekanauki.pl/articles/411975.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Marrubium vulgare
Essential oil composition
GC-MS
antibacterial activities
Opis:
The essential oil from flowering Marrubium (Marrubium vulgare L.) an aromatic member of the Lamiaceae family, from Algeria, obtained by hydrodistillation, was analysed by GC/FID and GC/MS. The constituents were identified by their mass spectra and Kovats’ indices. Fivety (50) components in the oil of M. vulgare were identified. The results demonstrated that the major components of the essential oil were: 4,8,12,16-Tetramethyl heptadecan-4-olid (16.97 %), Germacrene D-4-ol (9.61 %), α- pinéne (9.37 %), Phytol (4.87 %), Dehydro-sabina ketone (4.12 %), Piperitone (3.27 %), δ-Cadinene (3.13 %), 1-Octen-3-ol (2.35 %) and Benzaldehyde (2.31 %). Essential oil of M vulgare was evaluated for its antibacterial activities against Gram-positive and Gram negative pathogenic bacteria: Bacillus subtilis, Micrococcus luteus, Escherichia coli and Klebsiella pneumoniae.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 10, 1; 61-69
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wrażliwość na olejki eteryczne środowiskowych lekoopornych szczepów Escherichia coli
Sensitivity to the essential oils of environmental, resistant to drugs strains of Escherichia coli
Autorzy:
Krzyśko-Łupicka, T.
Mysłek, M.
Błaszczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/126593.pdf
Data publikacji:
2015
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
Escherichia coli
antybiotykooporność
olejki eteryczne
antibiotic resistance
essential oils
Opis:
W środowisku coraz powszechnej stwierdzana jest obecność lekoopornych szczepów Escherichia coli. Alternatywną drogę ich eliminacji mogą stanowić biodegradowalne i nietoksyczne substancje, między innymi olejki eteryczne. Celem pracy była ocena działania olejków eterycznych na środowiskowe lekooporne szczepy Escherichia coli. Materiał badawczy stanowiło 10 wyizolowanych ze środowiska naturalnego lekooopornych szczepów E. coli, w tym 8 glukuronidazo-dodatnich. Wrażliwość szczepów na takie antybiotyki, jak: ampicylina, amoksycylina, cefotaksym, chloramfenikol, cyprofloksacyna, ceftazydym, doksycyklina, gentamycyna, kanamycyna, trimetoprim, tetracyklina, streptomycyna, kwas nalidyksowy oraz na sulfonamidy, oznaczono na podłożu Mueller-Hinton. Metodą dyfuzyjną płytkowo-cylinderkową oceniono wrażliwość szczepów na olejki: tymiankowy, oregano, herbaciany, lemongrasowy, cytrynowy i kminkowy oraz tymol w stężeniach 1,5%; 1,0%; 0,5%; 0,25%. Na podstawie uzyskanych wyników stwierdzono, że testowane szczepy E. coli wykazywały oporność na co najmniej połowę testowanych antybiotyków, a 90% z nich było oporne na ampicylinę i amoksycylinę. Także wrażliwość szczepów na testowane olejki eteryczne była zróżnicowana. Tylko olejek tymiankowy w stężeniach 1 i 1,5% zahamował rozwój 90% badanych szczepów E. coli. Olejki herbaciany, lemongrasowy, cytrynowy, oregano i kminkowy w testowanych stężeniach nie hamowały rozwoju testowanych szczepów Escherichia coli.
In an environment increasingly common finding is the presence of antibiotic-resistant strains of Escherichia coli. An alternative way to eliminate them can provide biodegradable and non-toxic substances, including essential oils. The aim of this study was to evaluate the effect of essential oils on environmental, antibiotic-resistant strains of Escherichia coli. The research material consisted of 10 isolated from the environment, antibiotic-resistant strains of E. coli, including 8 glucuronidase-positive. Using the Mueller-Hinton medium was evaluated the sensitivity to antibiotics such as ampicillin, amoxicillin, cefotaxime, chloramphenicol, ciprofloxacin, ceftazidime, doxycycline, gentamycin, kanamycin, trimethoprim, tetracycline, streptomycin, nalidixic acid and sulfonamides. Using the platelet-cylinders diffusion method was assessed the sensitivity of the strains on essential oils: thyme, oregano, tea tree, lemongrass, lemon, and caraway, at concentrations of 1.5%; 1.0%; 0.5%, 0.25%. Based on the results, it was found that the tested strains of E. coli were resistant to at least half of the used antibiotics and 90% of them showed resistance to ampicillin, and amoxicillin. Also, the sensitivity of the strains to tested essential oils has been diverse. Only thyme oil in a concentration of 1.5% inhibited growth of 90% of the tested strains of E. coli. On the other hand, oregano oil in a concentration of 1.5% inhibited the development of 3 out of 10 tested strains. Oils of tea, lemongrass, lemon and caraway, at the mentioned concentrations have been not bactericidal against strains of Escherichia coli.
Źródło:
Proceedings of ECOpole; 2015, 9, 2; 633-639
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cybersecurity in civil aviation in Poland and Slovakia
Autorzy:
Karpiuk, Mirosław
Kelemen, Miroslav
Powiązania:
https://bibliotekanauki.pl/articles/2158438.pdf
Data publikacji:
2022-12-06
Wydawca:
Akademia Sztuki Wojennej
Tematy:
civil aviation
air transport
cybersecurity
operator of essential services
Opis:
Civil aviation, similar to other economy sectors, is exposed to cyber-attacks. In this case however, the protection against cybersecurity threats is gaining particular significance, as the industry relies heavily on the use of information systems (information and communication systems with electronic data processed in such systems). The systems are exposed to incidents. Incidents in civil aviation are events occurring in cyberspace which affect, or might potentially affect, the security of aircraft. The issue of cybersecurity in civil aviation is discussed in the context of legal regulations that are in force in Poland and Slovakia. Individual solutions aimed at ensuring the cybersecurity of air transport were analysed.
Źródło:
Cybersecurity and Law; 2022, 8, 2; 70-83
2658-1493
Pojawia się w:
Cybersecurity and Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular basis of essential thrombocythaemia in humans and dogs - a review
Autorzy:
Padzik, N.
Szewczuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/2119549.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Zootechniczne
Tematy:
myeloproliferative syndromes
JAK2-V617F
essential thrombocythaemia
Opis:
A potential cause of essential thrombocythaemia can be seen as the V617F point mutation within Janus kinase 2. This mutation occurs in 60-70% of patients with this disease and is located in the domain acting as an inhibitor. It increases the enzymatic activity of JAK2 kinase and induces intensified sensitivity of cells to cytokines. Identification of mutations in the JAK2 gene has made it possible to describe the molecular pathogenesis of myeloproliferative syndromes, which has enabled more accurate diagnosis and assisted in effective treatment. The significant similarity of the clinical, laboratory and morphological features of myeloproliferative syndromes (including essential thrombocythaemia) in animals and humans suggests that common signalling pathways within the JAK2 gene may be involved in the development of these diseases.
Źródło:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2021, 17, 1; 13-21
1733-7305
Pojawia się w:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biologically active plant-derived substances with antimicrobial properties
Substancje biologicznie czynne pochodzenia roślinnego o własnościach przeciwdrobnoustrojowych
Autorzy:
Tokarska-Rodak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2048817.pdf
Data publikacji:
2021
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
anti-bacterial agents
antifungal agents
essential oil
Aloe
Chelidonium
Opis:
Modern medicine, as well as the pharmaceutical, cosmetic and food industries appreciate the value of plant raw materials for their antiseptic, analgesic, anti-inflammatory and soothing effects. Medicinal plants, often found endemically, are often treated as potential sources of new substances with antimicrobial and antifungal activity. The aim of this study was to analyze the significance of selected medicinal and spice plants in terms of their ability to inhibit the growth of microorganisms, including those pathogenic to humans. The significance of active substances contained in selected plant species with high antimicrobial potential including Aloe vera L. and Chelidonium majus L. was described. The antimicrobial activity of plant oils, including those extracted from citrus and spice plants, was also analyzed. Plants are a rich source of many substances with a broad spectrum of activity. This knowledge has often been used in folk medicine, but it was not until the development of modern research methods that the mechanisms underlying the therapeutic properties of many plant substances and their proper use could be understood. New substances present in plant materials are constantly being discovered that may be of medical interest because of their great potential to be used against microorganisms or because of their antioxidant and anti-cancer properties.
Współczesna medycyna, branża farmaceutyczna, kosmetyczna i spożywcza docenia wartości surowców roślinnych w zakresie działania antyseptycznego, przeciwbólowego, przeciwzapalnego i kojącego. Rośliny lecznicze, często występujące endemicznie, traktowane są niejednokrotnie jako potencjalne źródła nowych substancji o aktywności przeciwbakteryjnej i przeciwgrzybiczej. Celem pracy była analiza znaczenia wybranych roślin leczniczych i przyprawowych w zakresie ich działania hamującego na rozwój drobnoustrojów, w tym chorobotwórczych dla człowieka. Opisano znaczenie substancji czynnych zawartych wybranych gatunkach roślin o dużym potencjale przeciwdrobnoustrojowym w tym Aloe vera L. i Chelidonium majus L. Przeanalizowano także przeciwdrobnoustrojowe działanie olejków roślinnych, w tym pozyskiwanych z roślin cytrusowych i przyprawowych. Rośliny są bogatym źródłem wielu substancji o szerokim spektrum działania. Wiedzę tę niejednokrotnie wykorzystywano w medycynie ludowej, lecz dopiero rozwój współczesnych metod badawczych umożliwił poznanie mechanizmów leżących u podstaw własności leczniczych wielu substancji pochodzenia roślinnego i właściwego ich wykorzystania. Wciąż odkrywane są nowe substancje obecne w surowcach roślinnych, które mogą mieć znaczenie w medycynie ze względu na duży potencjał w niszczeniu drobnoustrojów lub ze względu na właściwości przeciwutleniające czy przeciwnowotworowe.
Źródło:
Health Problems of Civilization; 2021, 15, 2; 152-158
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pandemic as a Biographical Turning Point? The Experiences of the COVID-19 Pandemic in the Biographies of “Essential Workers”
Autorzy:
Mrozowicki, Adam
Burski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/32222636.pdf
Data publikacji:
2024
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Pandemic
COVID-19
Essential Workers
Biographical Method
Turning Points
Opis:
This article aims to answer the question of the biographical meaning of the pandemic in the experiences of so-called “essential workers” who performed their duties in the first line of struggle with the consequences of the COVID-19 health crisis. The analysis of workers’ experiences helps us contribute to the ongoing debates on the role of macro-level events in autobiographical storytelling and the discussion on biographical turning points in sociology. The empirical analysis is based on a collection of more than 80 biographical narrative interviews in healthcare, social care, education, and logistics, from which we selected two stories of the pivotal significance of the pandemic crisis for biographical change for analysis. Biographical analysis makes it possible to describe which conditions are conducive to the inclusion of the pandemic in the main biographical story as a turning point.
Źródło:
Qualitative Sociology Review; 2024, 20, 2; 70-89
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Irzykowski prekursor Witkacego, broń Boże – poprzednik
Irzykowski – Witkacy’s Precursor, God Forbid, a Predecessor!
Autorzy:
Bocheński, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/28407705.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
polemika
metatekst
rozmowy istotne
Witkacy
polemics
metatext
essential conversations
Opis:
Analizuję retorykę sporu między Karolem Irzykowskim i Witkacym, traktując polemiczne wypowiedzi jako wyraz skrywanych resentymentalnych uprzedzeń. Spór ten interpretuję jako pojedynek dwóch nieuznanych intelektualistów, oskarżających się o anachronizm i przyznających sobie miano prekursora. W psychomachii Irzykowskiego i Witkacego podkreślam nieustanne wykraczanie obu pisarzy poza normy etyczne artystycznego sporu, przez nich samych postulowane.
This essay offers an analysis of the rhetoric of the dispute between Irzykowski and Witkacy that takes into account both artists’ strong statements of opinions as an indication of their hidden recurring resentments. In the essay, the dispute is interpreted as a duel between two unrecognised intellectuals accusing each other of anachronisms and honouring themselves with a label of a precursor. What is more, the author of the essay points out how the nature of this psychomachy-like dispute manifests itself with a constant violation of by and large accepted ethical norms of an artistic dispute of which the two were eager proponents.
Źródło:
Prace Filologiczne. Literaturoznawstwo; 2023, 13 (16); 323-337
2084-6045
2658-2503
Pojawia się w:
Prace Filologiczne. Literaturoznawstwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of Lamiaceae essential oils with selected azoles against Candida albicans clinical isolates
Autorzy:
Proškovcová, M.
Čonková, E.
Váczi, P.
Marcinčáková, D.
Harčárová, M.
Powiązania:
https://bibliotekanauki.pl/articles/16539174.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Candida albicans
fluconazole
itraconazole
Lamiaceae essential oils
synergistic effect
Opis:
A current problem in candidiasis treatment is increasing resistance to azoles, which are often prescribed to patients. The study underlines the high resistance of yeasts to fluconazole, which achieved high MIC (minimal inhibitory concentration) values both alone and in combination with essential oils (EOs). Antifungal activity of Hyssopus officinalis, Thymus vulgaris, Salvia officinalis and Rosmarinus officinalis EOs was determined against 13 clinical isolates of Candida albicans and reference strain Candida albicans ATCC 10231. The synergistic effect was investigated for the combination of itraconazole and fluconazole with Hyssopus officinalis and Thymus vulgaris EOs. Based on the fractional inhibitory concentration index, the synergistic effect was achieved in all of the samples exposed to itraconazole with Hyssopus officinalis (FICI 0.3±0.06). On the other side, the additive effect was proven in use of itraconazole with Thymus vulgaris (FICI 0.75±0.35) and fluconazole with both EOs tested (FICI 0.81±0.19; 0.88±0.57) This study shows the importance of monitoring the synergistic effect of antifungals combined with EOs, because it is a possible solution for reducing the resistance and improving the disease prognosis.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 279-285
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical composition, antioxidant and antimicrobial activities of Moroccan species of Psidium guajava extracts
Autorzy:
Lahlou, J.
Amraoui, B.E.
El-Wahidi, M.
Bamhaoud, T.
Powiązania:
https://bibliotekanauki.pl/articles/2082864.pdf
Data publikacji:
2022
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
antibacterial activity
antifungal activity
polyphenol
medicinal plant
essential oil
Opis:
Background. During the recent years, appropriate attention has been paid to the oxidative stress which damages the body’s cells, proteins, and DNA. Therefore, the need of antioxidants becomes a therapeutic and preventive priority. In addition, microbial infections also constitute a public health problem. Objective. To find efficient, reliable and safe alternatives sources to synthetic antioxidants, antibiotics and antifungals drugs. Materials and methods. Extract and essential oil of Psidium guajava were screened for their antioxidant and antimicrobial activities against gram positive bacteria (Enterococcus faecalis and Staphylococcus aureus), gram negative bacteria (Citrobacter freundii, Escherichia coli and Pseudomonas sp) and fungi (Candida albicans,Candida tropicalis and Cryptococcus neoformans), as well as to determine the functional groups of phytochemicals present in the essential oil by Fourier transform infrared spectroscopy (FTIR). Results. The results indicate that P. guajava leaves extract demonstrated very high antioxidant activity and P.guajava essential oil showed the highest polyphenols content. The antioxidant capacity showed a significant negative linear correlation to total polyphenolic content (TPC) with Pearson’s correlation coefficients. P. guajava essential oil shows high antibacterial and antifungal activity against all the studied bacteria and fungi.The FTIR analysis of P. guajava essential oil showed the presence of several functional groups (ethers, esters, ketones, terpenes, alkanes, aldehydes, aromatic hydrocarbons, alcohols, and phenols). The relationship between the chemical composition and antimicrobial activity of P.guajava essential oil suggests that the attribution of its antimicrobial activity to a particular compound or a synergistic effects between its different constituents remains difficult. Conclusions. The present study demonstrated that Psidium guajava is a valuable source of active compounds with anti- oxidant and antimicrobial activities. This finding suggests the new use of the fruits and the leaves extracts of this plant in the treatment of bacterial and fungal infections, as well as for the extraction of new antioxidants. Therefore, it is necessary to be carried out in another study to identify the active(s) compound(s) in P.guajava essential oil with respect to their mechanisms and synergistic actions.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2022, 73, 1; 65-77
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The inhibition of methicillin-resistant Staphylococcus aureus by essential oils isolated from leaves and fruits of Schinus areira depending on their chemical compositions
Autorzy:
Celaya, Liliana
Alabrudzińska, Marta
Molina, Ana
Viturro, Carmen
Moreno, Silvia
Powiązania:
https://bibliotekanauki.pl/articles/1039327.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Schinus areira
essential oils
antibacterial
Methicillin-resistant Staphylococcus aureus
Opis:
Schinus areira L. is a native plant from South America used for centuries in traditional medicine. Here, we investigate the antimicrobial activity of four essential oils extracted from leaves and fruits of S. areira exhibiting different chemical profiles. The antibacterial activity against the human pathogenic bacteria Staphylococcus aureus susceptible as well as methicillin resistant strain was assessed by the broth microdilution assay. The results showed that the limonene-rich oil extracted from the leaves and fruits have potent antibacterial effect on S. aureus ATCC 25923, while the α-phellandrene-rich fruit oil having a lower content of limonene showed the lowest antibacterial efficacy. In this work, for the first time, we demonstrated the bactericidal activity of essential oils isolated from fruits and leaves of S. areira against susceptible and methicillin resistant S. aureus strains. All results point out the potential use of the S. areira oils as antimicrobial agents to be used, at least against Staphylococcal infections.
Źródło:
Acta Biochimica Polonica; 2014, 61, 1; 41-46
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Known and unknown products from raw materials of plant origin
Autorzy:
Dąbrowska, Justyna A.
Powiązania:
https://bibliotekanauki.pl/articles/1179520.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
biological activity
essential oil
fluidolat®
hydrodistillation
hydrosol
plant material
Opis:
The products from raw materials of plant origin are a great source of the biologically active compounds with a wide range of activities and properties, especially antimicrobial, antioxidant, and anti-inflammatory. Typically, bioactive compounds of plants are produced as secondary metabolites and are sourced mostly as essential oils and hydrosoles. Lately, new, unique and innovative product name fluidolat® are developed by Śmigielski and his co-workers at the Technical University of Lodz [1,2]. These are components which unquestionably has many positive aspects, mostly high application potential, health benefit, biological activity and sensory value. In this article general characteristic of essential oils, hydrosoles, and fluidolat®, as well as a few words about their application and biological activity are presented.
Źródło:
World Scientific News; 2017, 76; 23-28
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 263

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies