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    Wyświetlanie 1-5 z 5
    Tytuł:
    Mycoremediation of anthraquinone dyes from textile industries: a mini-review
    Autorzy:
    Sen, Sudip K.
    Raut, Smita
    Raut, Sangeeta
    Powiązania:
    https://bibliotekanauki.pl/articles/16670418.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    anthraquinone dyes
    adsorption
    enzymes
    mycoremediation
    immobilization
    Opis:
    The discharge of wastewater from textile industries into aquatic bodies has severe health and environmental impacts. Textile industries generate huge amounts of effluents containing hazardous toxic dyes. Anthraquinone (AQ) dyes containing AQ chromophore groups are the second most important class of nondegradable textile dyes, preceded by azo dyes. Despite their prevalence, biodegradation of AQ dyes has not yet been completely understood because of their complex and stable structures. Currently, microbiological approaches to treating dyeing wastewater are considered economical and feasible, and reports regarding fungal degradation of AQ dyes are increasing. Structures and classification of AQ dyes were summarized in this study along with degradative fungi, and their enzyme systems with influencing factors and possible mechanisms of AQ mycoremediation were explored. Furthermore, the existing problems and present research progress were discussed. Finally, the key points with future research directions were presented.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 1; 85-91
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Is the information contained in coin designs fully reliable?
    Czy informacje zawarte w stemplach monet są w pełni wiarygodne?
    Autorzy:
    Suchodolski, Stanisław
    Powiązania:
    https://bibliotekanauki.pl/articles/16530164.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    design
    thaler
    dinar
    denar
    imitation
    immobilization
    Opis:
    It is widely believed that the data contained in coin designs are fully reliable. In fact, the metrical data, i.e. information about the issuer, place and time of mintage are not always accurate. This can be the case of modern or even almost contemporary coins. Dates on coins happened not to be updated under Russian partition, German occupations during the WW II and Russian occupation in Polish People Republic. Unmatched record are thalers with an image and name of the Empress Maria Theresa (d. 1780) minted in large quantities in different countries with the same design for two hundred years. Although a similar situation could have existed in the early Middle Ages, we are lacking written sources to confirm that. The very coins are thus the only source. There are two main reasons why designs, these certificates of coins, happened to be false: first, because foreign coin designs were imitated; second, because own coin designs were not changed and thus underwent immobilization. In the first case, coins with the best reputation were imitated: Roman, Byzantine, Anglo-Saxon and Cologne coins, but also gold Arabic dinars. The best known examples of immobilized coins are Carolingian and Saxon pennies and pfennings with the names of the King Otto III and the Empress Adelheid. The latter were minted in large quantities for more than half a century. Therefore they were imitated both in Saxony and Poland, where also Anglo-Saxon, Bavarian and Czech patterns were copied. The best way to identify the real issuer, place and time of issuing of various imitations is to examine the die-links between these imitations and coins with ascertained designs. Nevertheless, sometimes new information contained in the designs of coins, and not taken from outside or from the past, is false. Good example are the twelfth / thirteenth century regional issues of a number of dukes in Poland who did not possess the right of minting. Therefore they issued coins with the names and images of their late fathers or even earlier ancestor. Errors in identifying coins may, however, arise not only from entrusting the false certificates, but also because of the improper interpretation of the designs. It is assumed, for example, that the legends explain the images from the field. In fact, words and images were separate elements that did not have to match. Falsifying legends occurred more frequently than one might expect in different times and on various territories. The driving force behind such actions was mainly economic, and sometimes also political. Accidents also played role. Therefore one must first thoroughly examine a coin, before he makes an attempt to interpret it as a historical source. Slightly extended version of this text in Polish was to appear in the publication of materials from the conference Money and Banking in Great Poland held in Poznań on 20-21 November 2008 (35 figures).
    Źródło:
    Wiadomości Numizmatyczne; 2008, 52, 2(186); 117-138
    0043-5155
    Pojawia się w:
    Wiadomości Numizmatyczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vitamin E protected the mouse adrenal gland against immobilization stress
    Autorzy:
    Aşır, F.
    Nergiz, Y.
    Pala, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/16539327.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    adrenal gland
    immobilization
    psychopharmacological tests
    stress
    vitamin E
    Opis:
    In this study, we aimed to investigate the effects of vitamin E on mouse adrenal glands in immobilization stress. Twenty-eight male, 10-week-old, BALB/C mice weighing 30-45 grams were divided into four groups. Mice were placed in a cage where no movement was allowed 6 hours/day for 7 days for immobilization stress. 10 ml/kg vitamin E was administered orogastrically 1 hour before immobilization stress in the vitamin E and stress+vitamin E group. At the end of the 7th day, all the animals were subjected to elevated-plus maze (anxiety) and forced swimming (depression) tests. Left adrenal glands were dissected for routine paraffin tissue embedding protocol. Adrenal sections were stained with hematoxylin-eosin and Azan. Malonaldehyde (MDA) levels were also measured in the adrenal tissues. Anxiety level (0.023), depression level (p=0.042) and MDA values (p=0.01) were significantly increased in the stress group. Histological sections of the stress group showed cortical atrophy, medullary hypertrophy, vascular dilation and hemorrhage. Azan staining revealed a thinned capsule and corticomedullary fibrosis in the stress group. Pathologies induced by immobilization stress were mostly reversed after vitamin E administration. The results suggested that vitamin E alleviates adverse effects of immobilization stress (oxidative, behavioral and histopathologic changes) in mice.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 3; 447-454
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioremediation of Cu and Zn by guinea fowl feather wastes and biodegradation of Cu- and Zn-polluted feathers by free and immobilized heavy-metal-tolerant bacterium Pseudochrobactrum sp. IY-BUK1
    Autorzy:
    Yusuf, Ibrahim
    Sharu, Amina M.
    Powiązania:
    https://bibliotekanauki.pl/articles/16648133.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    bioremediation
    biodegradation
    immobilization
    guinea fowl
    feathers
    heavy metals
    Opis:
    One of the major pollutants generated from guinea fowl farms and slaughterhouses is guinea fowl feather (GFF) wastes. Chicken feathers are an important substrate for removing aqueous pollutants due to their structural characteristics, but the application of GFFs for such purposes has not been elucidated. This study was carried out to determine the potential of raw as well as chemically and physically pretreated GFFs in the bioremediation of copper (Cu) and zinc (Zn) from aqueous solutions and the subsequent biodegradation of Cu- and Zn-laden GFFs using free and immobilized heavy-metal-tolerant bacteria. Using atomic adsorption spectrometry, the ability of treated and untreated GFFs to adsorb Cu and Zn was determined, and the generated heavy-metal-laden GFFs were degraded using Pseudochrobactrum sp. IY-BUK1. The results revealed that under optimized conditions, acetone and autoclave pretreatment enhanced Cu and Zn removal by 40% within 6 h when compared with raw GFFs. Similarly, complete biodegradation of Cu- and Zn-laden GFFs was achieved at pH 8, with 2% inoculum size, and at 25EC using IY-BUK1 in 7 days. Upon optimization of physical and nutritional conditions, using one factor at a time and response surface methodology, the maximum keratinase activity was achieved at 30EC, with 3% inoculum size and 3.5% polluted GFF concentration in 3 h. The degradation and keratinase activity were further enhanced by 50% by the immobilization of Pseudochrobactrum sp. IY-BUK1 cells compared with free cells. Thus, GFFs can act as good biosorbents, and together with IY-BUK1, the use of GFFs can be an alternative approach to dispose of GFFs, thus preventing environmental pollution via bioremediation.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 221-234
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Durability, carbon footprint and contaminant immobilization in self-hardening slurries applied to cut-off walls: a review
    Zawiesiny twardniejące w kontekście współczesnych wyzwań środowiskowych
    Autorzy:
    Szarek, Łukasz
    Krysiak, Łukasz
    Kledyński, Zbigniew
    Machowska, Agnieszka
    Falaciński, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/27312141.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    immobilizacja
    korozja
    ślad węglowy
    trwałość
    produkt uboczny spalania
    zawiesina twardniejąca
    zawiesina bentonitowa
    carbon footprint
    bentonite slurry
    corrosion
    durability
    immobilization
    self-hardening slurry
    supplementary cementitious material
    Opis:
    Cut-off walls built using self-hardening slurries are an important tool for modern engineering pursuing Sustainable Development Goals. Much like cement concrete, this material is affected by the challenges posed by the increasing human pressure on the environment, although it is used significantly less widely than concrete; for this reason, relatively little comprehensive literature data is available describing the interaction of self-hardening slurries with the environment. This article provides a review that complements the current state of knowledge on self-hardening slurries in this area, with a particular focus on the durability of the material and its pollutant immobilization capabilities. To provide context, the material’s operating conditions, properties and components are briefly characterized. The resistance of self-hardening slurries to environmental aggression is described extensively, as it is a key factor in ensuring the durability of the material. A sample analysis of the material’s carbon footprint in several representative composition variants is presented. The subject of pollutant immobilization by self-hardening slurries is outlined. Lines of further research are proposed to fill gaps in the available knowledge.
    Zawiesiny twardniejące stanowią ważne narzędzie nowoczesnej inżynierii dążącej do realizacji celów Zrównoważonego Rozwoju. Pomimo iż materiał ten stosowany jest zdecydowanie mniej powszechnie od betonu cementowego, to dotyczą go podobne wyzwania związane z rosnącą presją człowieka na środowisko - zmniejszenie negatywnego oddziaływania (np. w wyniku obniżenia śladu węglowego, czy zwiększenia wykorzystania odpadów po-procesowych), zwiększenie trwałości, itd. Pochodna węższego zakresu wykorzystania zawiesin twardniejących w szeroko rozumianym budownictwie jest względnie niewielką bazą dostępnych danych literaturowych kompleksowo opisujących ten rodzaj materiału ze środowiskowego punktu widzenia. Niniejszy artykuł stanowi przegląd uzupełniający bieżący stan wiedzy na temat zawiesin twardniejących, ze szczególnym uwzględnieniem trwałości materiału i jego zdolności do immobilizacji zanieczyszczeń. W celu nakreślenia kontekstu, krótko scharakteryzowano zawiesinę, warunki jej pracy (w przesłonach przeciw filtracyjnych), właściwości i składniki. Szeroko opisana została odporność zawiesin twardniejących na agresję środowiskową (fizyczną i chemiczną) jako czynnik kluczowy dla trwałości materiału. Wykonano przykładową analizę śladu węglowego zawiesiny twardniejącej w kilku zbliżonych pod względem właściwości technologicznych i użytkowych wariantach recepturowych. Przedstawiono zarys zagadnienia immobilizacji i sorpcji zanieczyszczeń w materiale. Zaproponowano kierunki dalszych badań.
    Źródło:
    Archives of Civil Engineering; 2023, 69, 3; 5--29
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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