323,436 research outputs found
MODULAR KIT FOR INTEGRATION AND INSTALLATION OF ONE OR MORE BIOREACTORS FOR MICROALGAE CULTIVATION
No full textA modular kit for integration and installation of one or more bioreactors for microalgae cultivation is described, said kit comprising: - at least one bioreactor for microalgae cultivation, in the form of a vertically arranged transparent tubular column (i); - a supporting structure (2) adapted to integrate and support the base of said at least one bioreactor (1), and also adapted to internally house a first connection (3) to a system for loading and unloading a cultivation vector fluid into/from said at least one bioreactor, and a second connection (4) to a system for supplying C02-supplemented air into said at least one bioreactor; - multiple modules (5) forming respective frames with internal empty spaces (13) and adapted to be connected to one another to house, in said empty spaces, said at least one bioreactor (1); said multiple modules being also so shaped as to convey filtered light into said at least one bioreactor (1)
Kit modulare per integrazione e installazione di uno o più bioreattori per la coltivazione di microalghe
No full text
Perturbation of cytokinin and ethylene-signalling pathways explain the strong rooting phenotype exhibited by Arabidopsis expressing the Schizosaccharomyces pombe mitotic inducer, cdc25
No full textBackground
Entry into mitosis is regulated by cyclin dependent kinases that in turn are phosphoregulated. In most eukaryotes, phosphoregulation is through WEE1 kinase and CDC25 phosphatase. In higher plants a homologous CDC25 gene is unconfirmed and hence the mitotic inducer Schizosaccharomyces pombe (Sp) cdc25 has been used as a tool in transgenic plants to probe cell cycle function. Expression of Spcdc25 in tobacco BY-2 cells accelerates entry into mitosis and depletes cytokinins; in whole plants it stimulates lateral root production. Here we show, for the first time, that alterations to cytokinin and ethylene signaling explain the rooting phenotype elicited by Spcdc25 expression in Arabidopsis.
Results
Expressing Spcdc25 in Arabidopsis results in increased formation of lateral and adventitious roots, a reduction of primary root width and more isodiametric cells in the root apical meristem (RAM) compared with wild type. Furthermore it stimulates root morphogenesis from hypocotyls when cultured on two way grids of increasing auxin and cytokinin concentrations. Microarray analysis of seedling roots expressing Spcdc25 reveals that expression of 167 genes is changed by > 2-fold. As well as genes related to stress responses and defence, these include 19 genes related to transcriptional regulation and signaling. Amongst these was the up-regulation of genes associated with ethylene synthesis and signaling. Seedlings expressing Spcdc25 produced 2-fold more ethylene than WT and exhibited a significant reduction in hypocotyl length both in darkness or when exposed to 10 ppm ethylene. Furthermore in Spcdc25 expressing plants, the cytokinin receptor AHK3 was down-regulated, and endogenous levels of iPA were reduced whereas endogeous IAA concentrations in the roots increased.
Conclusions
We suggest that the reduction in root width and change to a more isodiametric cell phenotype in the RAM in Spcdc25 expressing plants is a response to ethylene over-production. The increased rooting phenotype in Spcdc25 expressing plants is due to an increase in the ratio of endogenous auxin to cytokinin that is known to stimulate an increased rate of lateral root production. Overall, our data reveal important cross talk between cell division and plant growth regulators leading to developmental changes
Bridging the gap between servitization and social innovation
No full textThis paper explores the social implications of servitization and unveils the connections between servitization and social innovation. To substantiate these claims, the research elucidates three core concepts of social innovation, namely processes, instruments, and outcomes. The processual view of social innovation examines how societal changes unfold; the instrumental view focuses on tools and mechanisms driving these changes; and last the outcomes view analyses the resultant benefits. The paper reviews systematically the literature on the social impacts of servitization and, based on the mentioned views uses the literature findings to inductively develop three propositions and demonstrate that servitization can represent a form of social innovation, thus capable of profoundly reshaping industrial societies and contributing to progress and people 's well-being. In sum, the paper shows the social implications and benefits related to servitization of manufacturing firms and suggests the research priorities in this domain for servitization scholars
A Validated Photonumeric Scale for the Evaluation of Neck Skin Laxity
No full textBACKGROUND: Neck aging is usually evaluated together with the lower face. To date, a skin laxity scale for the neck as an independent anatomical district is lacking. OBJECTIVE: To create and validate a proposed photonumeric neck skin laxity (NSL) scale. MATERIALS AND METHODS: Frontal neck photographic images of 110 subjects were collected. Each standardized neck image was evaluated twice by 3 independent doctors, 1 week apart. A 4-point photonumeric NSL scale was developed (0 = absence of skin laxity and 4 = severe skin laxity) and validated in terms of intraobserver and interobserver correlation and internal consistency. RESULTS: The intraobserver reliability analysis of the 2 assessments performed by each observer revealed excellent correlation and consistency of the severity grading, independently of the time of evaluation (from 0.96 to 0.99, p < .01). Furthermore, the interobserver reliability analysis revealed an excellent agreement between the evaluators and an internal consistency independent of the evaluator (0.97, p < .01). CONCLUSION: The newly developed NSL scale is a reliable and reproducible scoring system for the aesthetic evaluation of skin laxity of the neck
Italian tailored assessment of lung indeterminate accidental nodule by proposing a segmental Pet/computed tomography (S-Pet/Ct): Rationale and study design of a retrospective, multicenter trial
No full textBACKGROUND: The Italian Tailored Assessment of Lung Indeterminate Accidental Nodule (ITALIAN) is a retrospective, multicenter trial designed to compare the diagnostic information provided by segmental positron emission tomography (PET)/computed tomography (CT) (s-PET/CT) with those of whole body (wb)-PET/CT in patients with single pulmonary nodules (SPN). This report describes the details and implications of the ITALIAN trial design.
METHODS AND RESULTS: Between September 2016 and May 2017, 502 consecutive patients (302 men, mean age 67±12 years) with SPN undergoing 18F-fluorodeoxyglucose (FDG) PET/CT were enrolled. PET/CT images will be visually and semiquantitatively evaluated. For visual analysis, a 4-point scoring system (1=absent; 2=mild; 3=moderate and 4=intense) will be used; for semiquantitative analysis, maximum standardized uptake value (SUV) in the SPN and mean SUV in the mediastinal blood pool and in the liver will be computed.
CONCLUSION: The results of this trial might help to define the role of s-PET/CT in patients with SPN. This trial will also evaluate the impact on radiobiology and costs subsequent the introduction of this alternative imaging acquisition modality
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
OGWA: Painting the past to remake the future. An aproach to the Northern Chaco Paraguaian chamacoco´s or ishir´s art
No full textEl trabajo realiza un contrapunto entre la incorporación al estado nacional de un grupo nómada ubicado en la Región del Alto Paraguay y la trayectoria de Ogwa, pintor perteneciente a dicha etnia. Entendiendo las relaciones entre Mito e Historia como expresión de la dinámica etnohistórica de los pueblos ágrafos, analiza las preocupaciones pictóricas del autor en tanto resultado de su interacción, primero con los viajeros del siglo XIX y luego con los etnógrafos del siglo XX. Si a nivel “tradicional” las escenas rituales que rememoran los mitos, la ornamentación corporal y la plumaria constituyen las claves para entender la “estética” sobre la que se cimenta la vida social de los ishir; las pinturas de Ogwa revelan tanto la continuidad como el quiebre de tales patrones en la medida que es justamente la coproducción con el Otro la que define su obra como inicio de un arte figurativo inexistente en la cultura tradicional. En tal sentido, sus cuadros no sólo escenifican las “glorias del pasado étnico”, constituyen nuevos relatos de una cultura cuyo nivel de desestructuración actual se resiste a permanecer como mera supervivencia del pasado promoviendo nuevas formas de pensar el presente y prefigurar el futuro de la vida social.This paper does a counterpoint between the incorporation of a nomadic group located in the Northern Paraguaian Region and Ogwa´s trayectory, a painter that belongs to that ethnic group. Considering the relations between Myth and History as an expression of the non writing (ágrafos) people´s ethnohistorycal dynamic, it analyzes the author´s pictorial concerns as the result of his interaction, first of all with the XIX century travellers and after with the XX century ethnographers. If in a "traditional" level ritual scenes that recall myths, corporal ornamentation and plumaria constitute the keys to understand the "aesthetic" on which ishir social life is consolidated; Ogwa´s paintings reveal continuity as much as breaks of such patterns as far as is precisely the coproduction with the Other the one that defines its work like the beginning of a nonexistent figurative art in the traditional culture. In such sense, their pictures not only stage the "glories of the ethnic past", but also constitute new stories of a culture whose desestructurated present level resists to remain as mere survival of the past promoting new ways of thinking the present and to imagine the future social life.Fil: Spadafora, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Facultad Latinoamericana de Ciencias Sociales; Argentina. Universidad de Buenos Aires; ArgentinaFil: Bayardo Garcia, Rubens. Universidad Nacional de San Martín. Instituto de Altos Estudios Sociales; Argentin
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