64,732 research outputs found

    Getting Educated : Working Class and First-Generation Students and the Extra-Curriculum

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    Previous research shows that participation in the extra-curriculum supports college students\u27 integration, but participation varies based on students\u27 background: working class students and first-generation college students tend to participate less. I contribute to this literature by analyzing interview data. I find students differ in how they participate in activities and integrate into college based on their likelihood of attending an elite institution. Working-class and first-generation students participate in activities as an extension of academics, while other students participate for social reasons, resulting in different experiences of campus life. This difference can restrict students\u27 gains in social and cultural capital, potentially limiting any decrease in inequality that results from elite college access

    The Choreography of Everday Life: Rudolf Laban and the Making of Modern Movement

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    “The Choreography of Everyday Life: Rudolf Laban and the Making of Modern Movement,” explores how an inscription technology developed in German expressionist dance found unlikely application in some of the key institutions of twentieth-century modernity. Called “Labanotation,” it used a complicated symbology to record human bodily movement on paper. Initially used to coordinate mass-dance spectacles in Weimar Germany, the system was quickly adopted in the United States and the United Kingdom in fields ranging from management theory to psychiatry to anthropology. My research analyzes the widespread appeal of this seemingly quixotic tool and to situates it within broader literatures on modern technology, art, media, and politics. Ultimately, I argue that Labanotation succeeded so spectacularly because it promised to reconcile the invented and the authentic, the individual and the group, and the body and the machine at moments threatened by massive social upheaval. Laban’s work thus not only served to preserve a fading past, but opened up new possibilities for the literal choreographing of modern life

    Purification of alpha-toxin from Staphylococcus aureus and application to cell permeabilization

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    Crude alpha-toxin was produced by Staphylococcus aureus, strain Wood 46. The amount of exotoxin was monitored during growth and all subsequent purification steps by determination of its hemolytic activity against rabbit erythrocytes. The culture supernatant was treated with ammonium sulfate (75% saturation). The resulting precipitate was dialyzed and subjected to cation-exchange chromatography. The fractions containing the hemolytic activity were further purified by gel chromatography. The final product was enriched by a factor of 8.5 compared to the crude toxin. In sodium dodecyl sulfate-polyacrylamide gel electrophoresis the purified toxin exhibited one major band. It caused the release of 86Rb+ and ATP from rat insulinoma (RIN A2) as well as pheochromocytoma cells (PC12) in culture, indicating efficient permeabilization of their plasma membranes for small molecules

    Amy Beach : the Victorian woman, the autism spectrum, and compositional style

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    Title from PDF of title page (University of Missouri--Columbia, viewed on September 13, 2012).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Thesis advisor: Dr. Robert ShayIncludes bibliographical references.M.A. University of Missouri--Columbia 2012."May 2012"Celebrated American composer and pianist Amy Marcy Cheney Beach (1867-1944) became the subject of the dedicated interest of a number of scholars during the last decades of the twentieth century, but her idiosyncratic behavior and compositional style traits have not yet been analyzed in terms of a possible neurological condition. This document demonstrates Beach's behavioral idiosyncrasies that point to an Autism Spectrum Disorder effecting both her career and compositional choices. As Victorian mannerisms and culture faded in favor of the personality driven twentieth century, Beach attempted to change her compositional style and in doing so, incorporated elements that reflect her true nature and aspects common among individuals with an autism spectrum disorder

    A plant homologue to mammalian brain 14-3-3 protein and protein kinase C inhibitor

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    We have isolated cDNA clones of Spinacea oleracea L. and Oenothera hookeri of 930 and 1017 base pairs, respectively. The open reading frame deduced from the Oenothera sequence codes for a protein of a calculated molecular mass of 29 200. The primary amino acid sequence exhibits a very high degree (88%) of homology to the 14-3-3 protein from bovine brain, and protein kinase C inhibitor from sheep brain. Subsequently the plant protein was partially purified from leaf extract. The partially purified plant protein inhibited protein kinase C from sheep brain in a heterologous assay system. The active fraction consisted of 5–6 different polypeptides of similar molecular size. One of these proteins crossreacted with a peptide-specific antibody against protein kinase C inhibitor protein from sheep brain

    Chromosome structure: improved immunolabeling for electron microscopy

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    To structurally dissect mitotic chromosomes, we aim to position along the folded chromatin fiber proteins involved in long-range order, such as topoisomerase IIα (topoIIα) and condensin. Immuno-electron microscopy (EM) of thin-sectioned chromosomes is the method of choice toward this goal. A much-improved immunoprocedure that avoids problems associated with aldehyde fixation, such as chemical translinking and networking of chromatin fibers, is reported here. We show that ultraviolet irradiation of isolated nuclei or chromosomes facilitates high-level specific immunostaining, as established by fluorescence microscopy with a variety of antibodies and especially by immuno-EM. Ultrastructural localizations of topoIIα and condensin I component hBarren (hBar; hCAP-H) in mitotic chromosomes were studied by immuno-EM. We show that the micrographs of thin-sectioned chromosomes map topoIIα and hBar to the center of the chromosomal body where the chromatin fibers generally converge. This localization is defined by many clustered gold particles with only rare individual particles in the peripheral halo. The data obtained are consistent with the view that condensin and perhaps topoIIα tether chromatin to loops according to a scaffolding-type mode

    Human complement factor H. Two factor H proteins are derived from alternatively spliced transcripts

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    The human complement factor H is an important component in the control of the alternative pathway of complement activation. We have previously shown that at least three factor H homologous mRNA species of 4.3 kb, 1.8 kb and 1.4 kb in length are constitutively expressed in human liver. In addition, several factor Hrelated proteins have been detected in human sera using antibodies directed against the classical human factor H glycoprotein of 150 kDa.The structure of the additional polypeptides has not been shown so far. Circumstantial evidence suggests that the 1.8-kb mRNA might encode the 43-kDa factor H-like polypeptide. Here we report the isolation, characterization and eukaryotic expression of the first full-length cDNA representing the major 4.3-kb mRNA and the 1.8-kb mRNA of human factor H. We show that the 4.3-kb transcript encodes the 150-kDa-factor H glycoprotein and the 1.8-kb mRNA the 43-kDa factorH polypeptide. The identity of the two cDNA in a region of 1400 nucleotides suggests that the two factor H-related transcripts are derived from one gene by a process of alternative splicing

    Experimental data from flesh quality assessment and shelf life monitoring of high pressure processed European sea bass (Dicentrarchus labrax) fillets

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    Fresh fish are highly perishable food products and their short shelf-life limits their commercial exploitation and leads to waste, which has a negative impact on aquaculture sustainability. New non-thermal food processing methods, such as high pressure (HP) processing, prolong shelf-life while assuring high food quality. The effect of HP processing (600MPa, 25 °C, 5min) on European sea bass (Dicentrarchus labrax) fillet quality and shelf life was investigated. The data presented comprises microbiome and proteome profiles of control and HP-processed sea bass fillets from 1 to 67 days of isothermal storage at 2 °C. Bacterial diversity was analysed by Illumina high-throughput sequencing of the 16S rRNA gene in pooled DNAs from control or HP-processed fillets after 1, 11 or 67 days and the raw reads were deposited in the NCBI-SRA database with accession number PRJNA517618. Yeast and fungi diversity were analysed by high-throughput sequencing of the internal transcribed spacer (ITS) region for control and HP-processed fillets at the end of storage (11 or 67 days, respectively) and have the SRA accession number PRJNA517779. Quantitative label-free proteomics profiles were analysed by SWATH-MS (Sequential Windowed data independent Acquisition of the Total High-resolution-Mass Spectra) in myofibrillar or sarcoplasmic enriched protein extracts pooled for control or HP-processed fillets after 1, 11 and 67 days of storage. Proteome data was deposited in the ProteomeXchange Consortium via the PRIDE partner repository with the dataset identifiers PXD012737. These data support the findings reported in the associated manuscript "High pressure processing of European sea bass (Dicentrarchus labrax) fillets and tools for flesh quality and shelf life monitoring", Tsironi et al., 2019, JFE 262:83-91, doi.org/10.1016/j.jfoodeng.2019.05.010.FCT (Foundation of Science and Technology) COFASP/0002/2015; Portuguese Foundation for Science and Technology UID/Multi/04326/2019 POCI-01-0145-FEDER007440 UID/NEU/04539/2019info:eu-repo/semantics/publishedVersio

    Extracellular aspartic protease SAP2 of Candida albicans yeast cleaves human kininogens and releases proinflammatory peptides, Met-Lys-bradykinin and des-Arg(9)-Met-Lys-bradykinin

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    Bradykinin-related peptides, universal mediators of inflammation collectively referred to as the kinins, are often produced in excessive amounts during microbial infections. We have recently shown that the yeast Candida albicans, the major fungal pathogen to humans, can exploit two mechanisms to enhance kinin levels at the sites of candidial infection, one depending on adsorption and activation of the endogenous kinin-generating system of the host on the fungal cell wall and the other relying on cleavage of kinin precursors, the kininogens, by pathogen-secreted proteases. This work aimed at assigning this kininogenase activity to the major secreted aspartic protease of C. albicans (SAP2). The purified SAP2 was shown to cleave human kininogens, preferably the low molecular mass form (LK) and optimally in an acidic environment (pH 3.5-4.0), and to produce two kinins, Met-Lys-bradykinin and its derivative, {[}Hydroxyproline(3)]-Met-Lys-bradykinin, both of which are capable of interacting with cellular bradykinin receptors of the B2 subtype. Additionally, albeit with a lower yield, des-Arg(9)-Met-Lys-bradykinin, an effective agonist of B1-subtype receptors, was released. The pathophysiological potential of these kinins and des-Arg-kinin was also proven by presenting their ability to stimulate human promonocytic cells U937 to release proinflammatory interleukin 1 beta (IL-1 beta) and IL-6
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