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    Wyświetlanie 1-6 z 6
    Tytuł:
    Preparation of Face Wash Using Activated Charcoal and Green Tea Extracts
    Autorzy:
    Kabra, Kavya
    Khan, Ismaeel
    Anamika, Paul
    Malik, Maham
    Mehrotra, Sanjni
    Giri, Shipra
    Powiązania:
    https://bibliotekanauki.pl/articles/1159587.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Activated Charcoal
    Facewash
    Green Tea Extracts
    Opis:
    Due to the rapid development of urban cities in the recent decades the level of pollution in the air has increased exponentially, demanding the development of new variants of personal care products. Face being most exposed part of the body, comes in contact with pollution very easily making it difficult to maintain a healthy, bright and clear skin. The facial skin is thinner and more fragile as compared to the rest of the body. A cleansing product specially formulated for face should be used in order to retain the moisture and pH balance of skin. Activated charcoal has properties of deep cleaning and adsorbing impurities. This makes it a favourable ingredient for skin care products. Green tea is flooded with powerful antioxidants for treating acne & scars and also helps in anti-aging. This work aims at the preparation of two face washes. The first is prepared using activated charcoal and green tea extract and the second, without using activated charcoal and green tea extracts. The two face washes are then compared to determine their usability. The aim is to prepare a face wash to combat all the skin issues & to achieve a cleansed, moisturised & glowing face by using ingredients which benefit every skin type.
    Źródło:
    World Scientific News; 2018, 113; 157-163
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of As3plus cations from water by activated carbon, bentonite and zeolite in a batch system at different pH
    Autorzy:
    Todorović, B.Ž
    S.T., Stojiljković
    D.T., Stojiljković
    Petrović, S.M.
    Takić, L.M.
    Stojiljković, M.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190183.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    adsorption
    As3+
    activated charcoal
    bentonite
    zeolite
    Opis:
    Adsorption of As3+ cations by natural materials is a relatively well-studied problem although much remains to be learned about it. As a consequence of pollution, remarkably high arsenic content has been reported in numerous natural waters. The subject of this paper is the adsorption of As3+ cations by granulated activated carbon (GAC), bentonite and zeolite (0.1-0.3 g), which could be used prospectively as potential supplement to other materials. The quantitative analysis of all samples was performed by Inductively Coupled Plasma-Optical Emission Spectrometry. The results indicate that the amount of As3+ cations in a solution decreases with time for all the three adsorbents. The research also showed that 0.2 g of GAC and bentonite is an optimum adsorbent amount at pH 6.5. The same amount of zeolite has the best adsorption capacity at pH 3.5. Parallel testing of these materials showed that GAC had the highest adsorption potential (50%) compared to bentonite and zeolite (11.7% and 26.5%). Most of the adsorption process by GAC takes place at the first 45 min; in the case of bentonite it is the first 30 min and for zeolites the first 15 min (best starting; 19.5%). The reason for the lower adsorption of As3+ cations by bentonite is its instability in acidic environment, while zeolite shows reduced isomorphic replacement ability due to different charges compared to potentially convertible cations. The adsorption of arsenic on these natural materials has proven to be one of the most efficient and economical method of arsenic removal.
    Źródło:
    Journal of Elementology; 2017, 22, 2; 713-723
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    UV–Light assisted photocatalytic activity of Activated charcoal-TiO2 nanomaterial
    Autorzy:
    Kamalakkannan, J.
    Balraj, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1112779.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Activated charcoal-TiO2
    RB 5 dye
    photocatalyst
    Opis:
    An activated charcoal-TiO2 Catalyst was synthesized via the precipitation method and sonication technique, and three dyes: Reactive Black 5 (RB 5), Rhodamine B (Rh B) and Napthol Blue Black (NBB) were used to assess the quality of the product under UV-Light. The nanomaterial was also characterized by High-resolution scanning electron microscopy (HR-SEM), elementary dispersive X-ray (EDX), photoluminescence spectroscopy (PL) and UV-Vis DRS. The photodegradation of the three dyes when exposed to this nanomaterial indicate the superior photocatalytic activity of RB 5 as compared to the other dyes. A mechanism is proposed for the higher activity of AC-TiO2 than that of TiO2 nanocomposite material. Overall, this nanocomposite material was found to be highly stable and reusable. The nanomaterial is also economically of very low cost.
    Źródło:
    World News of Natural Sciences; 2018, 17; 102-110
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the influence of high humidity and exposure duration on the measurement results of radon concentration by means of PicoRad system in the CLOR calibration chamber
    Autorzy:
    Stawarz, O.
    Karpińska, O.
    Mamont-Ciesla, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/148604.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    radon
    activated charcoal
    relative humidity
    duration of exposure
    PicoRad system
    Opis:
    PicoRad system based on activated charcoal collectors and liquid scintillation counter is one of the most popular passive methods of radon measurements which may be used both indoors and in other environments such as caves, tunnels, mines etc. It is well known that charcoal is also a very good adsorber of water vapor and it can reduce adsorption efficiency for radon. In PicoRad collectors, the charcoal is mixed with a dessicant to lower this effect. A series of expositions of PicoRad detectors was performed in a Central Laboratory for Radiological Protection (CLOR) radon calibration/climatic chamber to study the effect of high relative humidity on the airborne radon concentration measurements and the dependence of the results on the duration of exposure. The results obtained from the PicoRad system were referred to the mean concentrations delivered by an AlphaGUARD monitor, Genitron (GmbH), Germany. The main conclusions are the following: 1) the PicoRad system results are not affected by high relative humidity, including extreme values of 90-96%, for the duration of exposure up to ca. 24 h; 2) in the relative humidity range of 75-96% the correction coefficient linearly depends on the duration of exposure reaching a value of ca. 16 for 96 h exposure; 3) the PicoRad system delivers results corresponding better to the mean value of radon concentration in the last 6 h interval of exposure than that in the whole exposure duration. This finding is particularly important for the calibration of PicoRad collectors in the conditions of decreasing radon concentration due to radon decay.
    Źródło:
    Nukleonika; 2006, 51,suppl.2; 53-57
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of reactive yellow dye 145 from wastewaters over activated carbon that is derived from Iraqi kehdrawy date palm seeds
    Autorzy:
    Esmael, Hussein A.
    Lafta, Abbas J.
    Nema, Noor A.
    Kahdum, Salih H.
    Mousa, Abdulazeez A.
    Abdali, O. Karar
    Powiązania:
    https://bibliotekanauki.pl/articles/1193943.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Activated carbon
    Activated charcoal
    Adsorption over activated carbon
    Textile dyes
    activated carbon
    date palm seeds
    linear Freundlich
    linear Langmuir
    Opis:
    This work involves synthesis of activated carbon from Iraqi date palm seeds as agricultural wastes using kehdrawy palm seeds. The preparation was conducted by chemical activation method using ZnCl2 as an activator. The synthesized activated carbon (AC) was characterized by different analytical and spectroscopic methods. This involves using scanning electron microscopy (SEM), flourier transformation infrared (FTIR), ash content, adsorption capacity, the percentage of humidity and the point zero charge (PZC). The activity of the prepared activated carbon was investigated by following the removal of reactive yellow 145 dye (RY 145) from the aqueous solutions. For a comparison a sample of non- activated carbon (NAC) was used in the same process. From the obtained results it was found that AC was more efficient in dye removal in comparison with NAC under the same conditions
    Źródło:
    World Scientific News; 2015, 21; 77-89
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie właściwości adsorbentów: smektynu dwuoktanościennego i aktywowanego węgla leczniczego w terapii ostrej biegunki u dzieci
    Dioctahedral smectite vs. activated charcoal in the treatment of acute diarrhoea in children
    Autorzy:
    Czerwionka-Szaflarska, Mieczysława
    Adamska, Inga
    Gawryjołek, Julia
    Powiązania:
    https://bibliotekanauki.pl/articles/1032459.pdf
    Data publikacji:
    2013
    Wydawca:
    Medical Communications
    Tematy:
    activated charcoal
    children
    diarrhea
    smectite
    treatment
    biegunka
    dzieci
    aktywowany węgiel leczniczy
    smektyn dwuoktanościenny
    leczenie
    Opis:
    Acute infectious diarrhea is one of the most common causes of morbidity in the pediatric population, mostly of viral etiology. The disease is usually of self-limited course, and as treatment relievers are recommended. The most important part of the treatment are oral rehydration solutions. In the adjuvant treatment may be considered, inter alia, the use of adsorbents. In Poland, the most widely used adsorbents include activated charcoal and activated smectite. The binding capacity for bacterial toxins of the activated charcoal is not completely established, there is no clinical evidence of this action. In clinical studies the ability of smectite to adsorb viruses and bacterial toxins has been confirmed. Protective effect of smectite for stomach and intestines mucous membrane has also been well documented – because of these unique properties, smectite can be classified as second-generation adsorbent. According to current recommendations of ESPGHAN and ESPID from 2008, smectite is the only adsorbent of proven security, that used together with oral rehydration solutions increases the chances of reducing the duration of diarrhea.
    Ostra biegunka infekcyjna jest jedną z najczęstszych przyczyn zachorowań w populacji dziecięcej, najczęściej o etiologii wirusowej. Choroba ma zazwyczaj przebieg samoograniczający się, a w terapii zalecane są leki objawowe. Za najważniejszy element leczenia uznaje się stosowanie doustnych płynów nawadniających. W leczeniu uzupełniającym można rozważyć między innymi stosowanie adsorbentów. W Polsce najczęściej stosowanymi adsorbentami są aktywowany węgiel leczniczy i smektyn dwuoktanościenny. Zdolność wiązania toksyn bakteryjnych przez węgiel leczniczy nie jest w pełni udowodniona, nie ma badań klinicznych potwierdzających to działanie. W badaniach klinicznych potwierdzono zdolność smektynu dwuoktanościennego do adsorbcji wirusów i toksyn bakteryjnych. Udokumentowano również wielokierunkowe działanie ochronne smektynu dwuoktanościennego na błonę śluzową żołądka i jelit – z uwagi na te unikalne właściwości smektyn może być kwalifikowany jako adsorbent drugiej generacji. Zgodnie z aktualnymi zaleceniami ESPGHAN i ESPID z 2008 roku smektyn dwuoktanościenny jest jedynym adsorbentem o udowodnionym bezpieczeństwie stosowania, który zastosowany równolegle z doustnymi płynami nawadniającymi zwiększa szanse na skrócenie czasu trwania biegunki.
    Źródło:
    Pediatria i Medycyna Rodzinna; 2013, 9, 1; 57-59
    1734-1531
    2451-0742
    Pojawia się w:
    Pediatria i Medycyna Rodzinna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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