Enrichment activities

Xem 1-20 trên 22 kết quả Enrichment activities
  • Preparations derived from Lentinula edodes (Berk.) Pegl. mycelium are worldwide used as dietary supplements containing compounds active as immune system enhancers, demonstrating chemopreventive and anticancer activity. L. edodes mycelium enriched with organic forms of selenium like selenized yeast possess putative, higher cancer preventive properties. The objective of this study was to test the effect of enrichment in selenium on antioxidant, reducing and free radical scavenging activity of water and alcohol extracts from mycelium of L. edodes (Berk.).

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  • Polysaccharide fractions isolated from Lentinula edodes fruitbodies and mycelium demonstrate strong immunomodulating, antioxidant and anticancer activity. We hypothesized, that polysaccharide fractions enriched in selenium would possess higher biological activity than non-enriched fractions, currently used to treat cancer. The first goal of this study was to isolate selenium (Se)-enriched polysaccharide fractions of different molecular weight from L. edodes mycelium cultivated under the submerged conditions in Se-enriched medium, and to investigate their monosaccharide composition....

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  • Via enrichment procedures carried out on a dioxin contaminated sediment sample from lotus pond at Danang airport, a microbial community assigned as DN553 with high capability of carbazol degradation was established. Analyses of community structure by using denaturing gradient gel electrophoresis (DGGE) of 16S rDNA fragments indicated that Achromobacter and Alcaligenes species dominated in this enrichment culture.

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  • We isolated a cholesterol-enriched membrane subpopulation from the so-called lipid raft fractions of Jurkat T-cells by taking advantage of its selective binding to a cholesterol-binding probe, BCh. The BCh-bound mem-brane subpopulation has a much higher cholesterol⁄phospholipid (C⁄P) molar ratio (1.0) than the BCh-unbound population in raft fractions (0.3). It contains not only the raft markers GM1 and flotillin, but also some T-cell receptor (TCR) signalling molecules, including Lck, Fyn and LAT. ...

    pdf10p fptmusic 12-04-2013 14 1   Download

  • The current volume entitled Protein Purification is designed to facilitate rapid access to valuable information about various methodologies. It aims as well to provide an overview of state-of-art techniques for the purification, analysis and quantification of proteins in complex samples using different enrichment strategies.Protein purification is a series of processes intended to isolate a single type of protein from a complex mixture. Protein purification is vital for the characterization of the function, structure and interactions of the protein of interest....

    pdf232p ktct_1669 09-05-2012 139 29   Download

  • This book takes a fresh look at programs for advanced studies for high school students in the United States, with a particular focus on the Advanced Placement and the International Baccalaureate programs, and asks how advanced studies can be significantly improved in general. It also examines two of the core issues surrounding these programs: they can have a profound impact on other components of the education system and participation in the programs has become key to admission at selective institutions of higher education.

    pdf588p camchuong_1 08-12-2012 43 11   Download

  • “The central purpose of the University of Virginia is to enrich the mind by stimulating and sustaining a spirit of free inquiry directed to understanding the nature of the universe and the role of mankind in it. Activities designed to quicken, discipline, and enlarge the intellectual and creative capacities, as well as the aesthetic and ethical awareness, of the members of the University and to record, preserve, and disseminate the results of intellectual discovery and creative endeavor serve this purpose.

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  • A library of random peptide sequences was used to select peptides that inhibit an anti-idiotypic catalytic Ig, immuno-globulin (IgG) 9G4H9, withab-lactamase-like activity. This library displays cyclic heptapeptides on the surface of bac-teriophagesand representsacollectionofupto4.5·10 9 peptides. The first selection step aimed at enriching the lib-rary in species that bind to the whole Ig molecule. The sec-ond stepwas todiscriminate peptides that bind topart of the molecule other than the active site. Selected peptides were then screened by surface plasmon resonance analysis.

    pdf7p fptmusic 16-04-2013 19 2   Download

  • Testican-1, a secreted proteoglycan enriched in brain, has a single thyropin domain that is highly homologous to domains previously shown to inhibit cysteine proteases. We demonstrate that purified recombinant human testican-1 is a strong competitive inhibitor of the lysosomal cysteine pro-tease, cathepsin L,withaKiof 0.7nM, but it does not inhibit the structurally related lysosomal cysteine protease cathep-sin B. Testican-1 inhibition of cathepsin L is independent of its chondroitin sulfate chains and is effective at both pH 5.5 and7.2.

    pdf8p tumor12 20-04-2013 15 2   Download

  • Cold seeps occur in geologically active and passive continental margins, where pore waters enriched in methane are forced upward through the sediments by pressure gradients. The advective supply of methane leads to dense microbial communities with high metabolic rates. Anaerobic methane oxidation presumably coupled to sulphate reduction facilitates formation of carbonates and, in many places, generates extremely high concentrations of hydrogen sulphide in pore waters.

    pdf46p japet75 30-01-2013 12 1   Download

  • In spiders soluble proteins are converted to form insoluble silk fibres, stronger than steel. The final fibre product has longbeen the subject of study;however, little is knownabout the conversion process in the silk-producing gland of the spider. Here we describe a study of the conversion of the soluble form of the major spider-silk protein, spidroin, directly extracted from the silk gland, to ab-sheet enriched stateusing circular dichroism(CD) spectroscopy.

    pdf5p research12 23-04-2013 12 1   Download

  • Csk-binding protein⁄phosphoprotein associated with glycosphingolipid-enriched domains is a transmembrane adaptor protein primarily involved in negative regulation of T-cell activation by recruitment of C-terminal Src kinase (Csk), a protein tyrosine kinase which represses Src kinase activity through C-terminal phosphorylation. Recruitment of Csk occurs via SH2-domain binding to PAG pTyr317, thus, the interaction is highly dependent on phosphorylation performed by the Src family kinase Fyn, which docks onto PAG using a dual-domain binding mode involving both SH3- and SH2-domains of Fyn....

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  • In this study, the calcite precipitation bacteria were investigated. Bacterial strains were isolated from cement samples and were tested for urease activities, potential to form endospore and calcite precipitation. The results showed that four candidates were isolated with high urease activities and calcite precipitation.

    pdf9p tieuthi3006 16-03-2018 3 0   Download

  • Another very strong argument for my opinion is that the university provides us with an enjoyable atmosphere of activities. Associating with different people on campus, discussing with a variety of people over a sensitive topic and reading in the quiet library can strongly shape us inclinatioiunature our thoughts, wide our horizon and enrich our personality.

    pdf10p kathy206 30-07-2010 191 48   Download

  • Vocabulary in Context was written especially for you. The program was designed to enrich your personal word bank with many hundreds of high-frequency and challenging words. This book presents topic-related readings with key terms in context. Follow-up exercises provide a wide variety of practice activities to help you unlock the meanings of unfamiliar words. These strategies include the study of synonyms and antonyms; grammatical word forms; word roots, prefixes, and suffixes; connotations; and the efficient use of a dictionary and thesaurus.

    pdf54p nganga_09 22-10-2015 51 24   Download

  • E-Learning is a vast and complex research topic that poses many challenges in every aspect: educational and pedagogical strategies and techniques and the tools for achieving them; usability, accessibility and user interface design; knowledge sharing and collaborative environments; technologies, architectures, and protocols; user activity monitoring, assessment and evaluation; experiences, case studies and more. This book’s authors come from all over the world; their ideas, studies, findings and experiences are a valuable contribution to enriching our knowledge in the field of eLearning. ...

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  • Resources could be used for performances, public art creation, festivals, the development of new work through the participation of schools and civic groups, or to pay for individual artists and larger institutions to enrich their connections to or representations of local communities. Grant support should also pay careful attention to projects or public activity rooted in prior engagement or historical activity – activity that has some legacy and can now be expanded or made into something more sustainable.

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  • The information technology (IT) revolution is surely coming in this century, just as did the agricultural and industrial revolutions that have already so enriched our lives. As the IT revolution progresses, it is expected that almost all social structures and economic activities will be changed substantially.

    pdf216p japet75 30-01-2013 26 2   Download

  • Hepatocytes located in the periportal and perivenous zones of the liver lobule show remarkable differences in the levels and activities of various enzymes and other proteins. To analyze global gene expression patterns of periportal and perivenous hepatocytes, enriched populations of the two cell types were isolated by combined collagenase⁄digitonin perfusion from mouse liver and used for microarray analysis.

    pdf11p inspiron33 23-03-2013 14 2   Download

  • Gangliosideshavebeen found toreside inglycosphingolipid-enriched microdomains (GEM) of the plasma membrane and to be involved in the regulation of epidermal growth factor receptor (EGFr or ErbB1) activity.To gain further insight into the mechanisms involved in EGFr modulation by gangliosides, we investigated the distribution of EGFr family members in the plasma membrane of CHO-K1 cells, which were genetically modified to express different gan-glioside molecules or depleted of glycolipids.

    pdf10p dell39 03-04-2013 16 2   Download


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