290 research outputs found
Adsorption and binding dynamics of graphene-supported phospholipid membranes using the QCM-D technique
We report on the adsorption dynamics of phospholipid membranes on
graphene-coated substrates using the quartz crystal microbalance with
dissipation monitoring (QCM-D) technique. We compare the lipid vescle
interaction and membranne formation on gold and silicon dioxide QCM crystal
surfaces with their graphene oxide (GO) and reduced (r)GO coated counterparts,
and report on the different lipid structures obtained. We establish graphene
derivative coatings as support surfaces with tuneable hydrophobicity for the
formation of controllable lipid structures. One structure of interest formed
are lipid monolayer membrannes which were formed on rGO, which are otherwise
challenging to produce. We also demonstrate and monitor biotin-avidin binding
on such a membranne, which will then serve as a platform for a wide range of
biosensing applications. The QCM-D technique could be extended to both
fundamental studies and applications of other covalent and non-covalent
interactions in 2-dimensional materials
From training to artisanal practice : rethinking choreographic relationships in modern dance
In the first part of the twentieth century early modern dancers created both a new art form and the forms of group social organisation that were its condition of possibility. This paper critically examines the balletic and disciplinary ‘training’ model of dancer formation and proposes that the assumption of training in dance can obscure other ways of understanding dance-making relationships and other values in early modern dance. An ‘artisanal’ mode of production and knowledge transmission based on a non-binary relationship between ‘master’ and apprentice and occurring in a quasi-domestic and personalised space of some intimacy is proposed as a more pertinent way to think the enabling conditions of modern dance creation
Large Igneous Provinces and their mafic-ultramafic intrusions
Here we provide an overview of the range of settings for mafic-ultramafic layered intrusions as part of the plumbing system of Large Igneous Provinces, and address the metallogenic implications
Interaction standards for biophysics: anti-lysozyme nanobodies
From Springer Nature via Jisc Publications RouterHistory: received 2020-10-14, rev-recd 2021-03-01, registration 2021-03-22, accepted 2021-03-22, pub-electronic 2021-04-11, online 2021-04-11, pub-print 2021-05Publication status: PublishedFunder: Wellcome Trust; doi: http://dx.doi.org/10.13039/100004440; Grant(s): 203128/Z/16/ZAbstract: There is a significant demand in the molecular biophysics community for robust standard samples. They are required by researchers, instrument developers and pharmaceutical companies for instrumental quality control, methodological development and in the design and validation of devices, diagnostics and instrumentation. To-date there has been no clear consensus on the need and type of standards that should be available and different research groups and instrument manufacturers use different standard systems which significantly hinders comparative analysis. One of the major objectives of the Association of Resources for Biophysical Research in Europe (ARBRE) is to establish a common set of standard samples that can be used throughout the biophysics community and instrument developers. A survey was circulated among ARBRE members to ascertain the requirements of laboratories when using standard systems and the results are documented in this article. In summary, the major requirements are protein samples which are cheap, relatively small, stable and have different binding strengths. We have developed a panel of sdAb’s or ‘nanobodies’ against hen-egg white lysozyme with different binding strengths and suitable stability characteristics. Here we show the results of the survey, the selection procedure, validation and final selection of a panel of nanobody interaction standards
Immunogenicity of vaccination against influenza, Streptococcus pneumoniae and Haemophilus influenzae type B in patients with multiple myeloma
Vaccination against influenza and Streptococcus pneumoniae is recommended for elderly and immunocompromised individuals. However, there is little information concerning the efficacy of vaccination in specific groups of patients. In this study, 52 patients underwent vaccination against influenza, S. pneumoniae and Haemophilus influenzae type b (Hib) as they attended hospital outpatient clinics. Serum was analysed prior to vaccination and 4–6 weeks afterwards. Antibody titres against S. pneumoniae and Hib were compared with reference values corresponding to the geometric mean titres of a healthy UK population. For influenza vaccination, haemagglutination inhibition (HI) titres were measured against three inactivated strains; a titre of ≥ 1/40 was considered protective. No patient had protective titres to all three antigens prior to vaccination and 41 patients (85%) had titres < 1/40 to all 3 strains. Post vaccination only 9/48 patients (19%) achieved protective antibody titres. Resistance to S. pneumoniae and response to Pneumovax II was also poor: prevaccination, 45 patients (93%) had suboptimal antibody titres and in 26/43 patients (61%) titres remained low post vaccination. Resistance to Hib and response to vaccination was comparable with the healthy adult UK population. These results question the practice of routine influenza and pneumococcal vaccination in myeloma patients. © 2000 Cancer Research Campaig
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