Search results for "sif"
showing 10 items of 30916 documents
Antibacterial activity and cytotoxicity of selected Egyptian medicinal plants.
2011
Medicinal plants have been used as a source of remedies since ancient times in Egypt. The present study was designed to investigate the antibacterial activity and the cytotoxicity of the organic extracts from 16 selected medicinal plants of Egypt. The study was also extended to the isolation of the antiproliferative compound jaeschkeanadiol p-hydroxybenzoate (FH-25) from Ferula hermonis. The microbroth dilution was used to determine the minimal inhibitory concentration (MIC) of the samples against twelve bacterial strains belonging to four species, Providencia stuartii, Pseudomonas aeruginosa, Klebsiella pneumoniae, and Escherichia coli, while a resazurin assay was used to assess the cytoto…
In-Depth Characterization of Bioactive Extracts from Posidonia oceanica Waste Biomass
2019
© 2019 by the authors.
CYGD: the Comprehensive Yeast Genome Database.
2005
The comprehensive resource is available under http://mips.gsf.de/genre/proj/yeast/.; International audience; The Comprehensive Yeast Genome Database (CYGD) compiles a comprehensive data resource for information on the cellular functions of the yeast Saccharomyces cerevisiae and related species, chosen as the best understood model organism for eukaryotes. The database serves as a common resource generated by a European consortium, going beyond the provision of sequence information and functional annotations on individual genes and proteins. In addition, it provides information on the physical and functional interactions among proteins as well as other genetic elements. These cellular network…
Inferring Phytoplankton, Terrestrial Plant and Bacteria Bulk δ¹³C Values from Compound Specific Analyses of Lipids and Fatty Acids.
2015
Stable isotope mixing models in aquatic ecology require δ13C values for food web end members such as phytoplankton and bacteria, however it is rarely possible to measure these directly. Hence there is a critical need for improved methods for estimating the δ13C ratios of phytoplankton, bacteria and terrestrial detritus from within mixed seston. We determined the δ13C values of lipids, phospholipids and biomarker fatty acids and used these to calculate isotopic differences compared to the whole-cell δ13C values for eight phytoplankton classes, five bacterial taxa, and three types of terrestrial organic matter (two trees and one grass). The lipid content was higher amongst the phytoplankton (…
Development of healthy eating in children: from research to public health perspective
2019
International audience
L’analogia i el paral·lelisme en l’estil proverbial de Ramon Llull
2022
Ramon Llull és autor d’un extens i excepcional corpus de proverbis, distribuït en cinc reculls que va escriure principalment entre 1295 i 1302. En aquest article, després de contextualitzar les col·leccions en el marc de la trajectòria intel·lectual de Llull, de presentar els seus trets més remarcables i de repassar breument alguns aspectes de la teoria paremiològica sobre els marcadors proverbials, s’analitza l’ús d’un conjunt de procediments retòrics en la formulació dels enunciats, en especial la personificació i el paral·lelisme, el qual es posa en relació amb les funcions i les aplicacions pràctiques que Llull mateix preveu per als seus proverbis.
Televīzijas satura klasificēšana
2018
Darbā tiek pētīta televīzijas satura klasificēšana pēc raidījuma žanra. Tiek apskatīti citu autoru veiktie pētījumi televīzijas žanru klasifikācijas un saistīto video klasifikācijas problēmu risināšanā. Darba praktiskās daļas ietvaros ir izveidota televīzijas ierakstu datu kopa un veikta uz tās balstītu klasifikatoru izstrāde. Izveidotā ierakstu marķēšanas metode ļauj vienā stundā apstrādāt aptuveni 18 stundas ierakstu. Precīzākais uz konvolūciju neironu tīklu iezīmēm izstrādātais klasifikators uzrādīja 81,8% klasifikācijas precizitāti, pārspējot visaugstāko precizitāti uzrādījušo uz zema līmeņa iezīmēm balstīto klasifikatoru, kas pareizi atzīmēja 75,3% validācijas kopas datu. Uz konvolūcij…
Modelling the removal and reversible immobilization of murine noroviruses in a Phaeozem under various contamination and rinsing conditions
2018
International audience; Enteric viruses entering the soil with contaminated irrigation water can reach groundwater or be internalized in plants through their roots without being inactivated. Their fate in the soil depends on the virus, the soil and the soil solution. In order to write a mathematical model suitable for a Calcaric Phaeozem, we investigated the removal of murine norovirus and reversible immobilization in aggregate columns according to a saturation procedure, conditions between contamination and rinsing time, temperature and soil solution. Viruses were quantified before and after 0.45‐μm filtration with an RT‐qPCR (real‐time polymerase chain reaction). Experimental results supp…
Transfection of lipoma cells with papilloma bovine virus subgenomic fragment.
1991
Abstract Lipoma cells with consistent chromosomal aberration have been transfected with plasmids carrying papilloma bovine virus subgenomic fragment (PBV 69). The succesful transformation of the cells was ascerted on the changed growth pattern of the cells in liquid medium, colony formation in soft agar and modified cell appearrance in electron microscopy; transfection with PBV 69 has not been, however, sufficient to immortalize lipoma cells.
The effect of carvacrol on enteric viruses.
2014
Carvacrol, a monoterpenic phenol, is said to have extensive antimicrobial activity in a wide range of food spoilage or pathogenic fungi, yeast and bacteria. The aim of this study was to assess its antiviral activity on norovirus surrogates, feline calicivirus (FCV), murine norovirus (MNV), and hepatitis A virus (HAV), as well as its potential in food applications. Initially, different concentrations of carvacrol (0.25, 0.5, 1%) were individually mixed with each virus at titers of ca. 6-7 log TCID50/ml and incubated 2h at 37°C. Carvacrol at 0.5% completely inactivated the two norovirus surrogates, whereas 1% concentration was required to achieve ca. 1 log reduction of HAV. In lettuce wash wa…