105,846 research outputs found
Data for: Synthesis of 1,4-diazabicyclo[2.2.2]octane and pyridinium based cationic polymers via ROMP and examination of their antibacterial activity and cytotoxicity
No full textThis paper focuses on the synthesis of cationic antibacterial polymers that could be a potential for new generation antibiotics with well-defined architecture derived by Ring Opening Metathesis Polymerization (ROMP) technique. Mono and double charge bearing quaternary groups have been used to synthesize cationic homopolymers (MWs: 3000 and 10000 g/mole) and their copolymers (MWs: 5000 g/mole). Hemolytic concentration (HC50, ≥1000 µg/mL) and MTS assay results showed that the polymers are non-toxic. It has been observed the double charge bearing polymers has the highest antimicrobial activity (S. aureus= 8 µg/mL) and a high selectivity with a value of 250 against S. aureus. Percent killing efficiencies were tested on glass surface and moderate killing efficiency was observed between a ranges 40-80% in 5 minutes. Cationic charge density and zeta potential studies were used to investigate mechanism of antimicrobial efficiency of the polymer in solution during the action against S. aureus to understand structure-activity relationship
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Green Synthesıs Of Cosmetıc Soaps Obtaıned From Laurel Nobılıs
No full textProject Number: FEN.23.024In this study, Laurel nobilis oil was obtained from Laurel nobilis fruits. Qualitative analysis of Laurel fixed oil was performed by GC-MS. Additionally, saponification value (SV), acid value (AV), free fatty acid value (% FFA) and peroxide value (PV) values of bay Laurel oil were determined as 140.0 mg KOH/g, 26.5 mg KOH/g, 13.25 mg KOH/g, and 10.28 meq O2/kg, respectively. Activated carbon was obtained as a result of carbonization of the Laurel fruit seeds, which were waste as a result of oil extraction, at 500 oC. Activated carbon was characterized by FT-IR, BET, SEM and TGA. Soap is made of different fatty acid salts, either sodium or potassium. The obtained Laurel fruit oil and activated carbon were used in the preparation of solid soaps with peeling effect by the cold process method. pH, foam test, total alkaline test, and total fatty matter determination (TFM) of the prepared soaps were determined. Thus, the synthesis of activated carbon with peeling effect, which has good cleaning and foaming properties, was carried out.[EN] Dicle Universityscientific research project commission (DÜBAP
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