66 research outputs found

    Criterios espaciales de diseño de un restaurante de estilo minimalista para la remodelación de casonas miraflorinas

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    El presente proyecto de investigación, responde a una problemática que se evidencia a través de una serie de debilidades como la antigüedad de edificación de las casonas ,las cuales se pueden encontrar en mal estado de conservación lo que significa un aumento en el costo de las remodelaciones ya que estas no solo se centrarían en transformar la vivienda a un restaurante sino en reparar y reforzar las estructuras que se encuentren en mal estado, la falta de planos y también contribuye a elevar estos costos de remodelación

    Effects of Pubertal Timing on Communication Behaviors and Stress Reactivity in Young Women During Conflict Discussions with their Mothers

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    Abstract Individuation, a process whereby adolescents gain autonomy from their parents while maintaining emotional relatedness, is displayed by characteristic styles of verbal exchanges. Negotiating this developmental transition is often stressful for adolescents and their parents. This study deals with the association between pubertal timing, communication behaviors, and stress reactivity assessed during young females' conflict discussions with their mothers. A sample of N = 32 girls (age 9-13, T1) was grouped by pubertal timing. Years later (age 17-22, T2) they were followed up and videotapes of daughter-mother conflict discussions were evaluated. Salivary alpha-amylase was used to assess the stress reactivity. Results revealed that young women who had entered puberty early were higher in striving for control and separation in interactions with their mothers, and displayed higher stress levels. These results pointed to less successful individuation in late adolescence/young adulthood compared to ontime and late maturing age mates

    rBCG Induces Strong Antigen-Specific T Cell Responses in Rhesus Macaques in a Prime-Boost Setting with an Adenovirus 35 Tuberculosis Vaccine Vector

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    BACKGROUND: BCG vaccination, combined with adenoviral-delivered boosts, represents a reasonable strategy to augment, broaden and prolong immune protection against tuberculosis (TB). We tested BCG (SSI1331) (in 6 animals, delivered intradermally) and a recombinant (rBCG) AFRO-1 expressing perfringolysin (in 6 animals) followed by two boosts (delivered intramuscullary) with non-replicating adenovirus 35 (rAd35) expressing a fusion protein composed of Ag85A, Ag85B and TB10.4, for the capacity to induce antigen-specific cellular immune responses in rhesus macaques (Macaca mulatta). Control animals received diluent (3 animals). METHODS AND FINDINGS: Cellular immune responses were analyzed longitudinally (12 blood draws for each animal) using intracellular cytokine staining (TNF-alpha, IL-2 and IFN-gamma), T cell proliferation was measured in CD4(+), CD8alpha/beta(+), and CD8alpha/alpha(+) T cell subsets and IFN-gamma production was tested in 7 day PBMC cultures (whole blood cell assay, WBA) using Ag85A, Ag85B, TB10.4 recombinant proteins, PPD or BCG as stimuli. Animals primed with AFRO-1 showed i) increased Ag85B-specific IFN-gamma production in the WBA assay (median >400 pg/ml for 6 animals) one week after the first boost with adenoviral-delivered TB-antigens as compared to animals primed with BCG (<200 pg/ml), ii) stronger T cell proliferation in the CD8alpha/alpha(+) T cell subset (proliferative index 17%) as compared to BCG-primed animals (proliferative index 5% in CD8alpha/alpha(+) T cells). Polyfunctional T cells, defined by IFN-gamma, TNF-alpha and IL-2 production were detected in 2/6 animals primed with AFRO-1 directed against Ag85A/b and TB10.4; 4/6 animals primed with BCG showed a Ag85A/b responses, yet only a single animal exhibited Ag85A/b and TB10.4 reactivity. CONCLUSION: AFRO-1 induces qualitatively and quantitatively different cellular immune responses as compared with BCG in rhesus macaques. Increased IFN-gamma-responses and antigen-specific T cell proliferation in the CD8alpha/alpha+ T cell subset represents a valuable marker for vaccine-take in BCG-based TB vaccine trials

    Dendritic Cells/Natural Killer Cross-Talk: A Novel Target for Human Immunodeficiency Virus Type-1 Protease Inhibitors

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    BACKGROUND: HIV-1 Protease Inhibitors, namely PIs, originally designed to inhibit HIV-1 aspartic protease, can modulate the immune response by mechanisms largely unknown, and independent from their activity on viral replication. Here, we analyzed the ability of PIs to interfere with differentiation program of monocytes toward dendritic cell (DCs) lineage, a key process in the inflammatory response. METHODOLOGY/PRINCIPAL FINDINGS: Monocytes from healthy donors were isolated and induced to differentiate in vitro in the presence or absence of saquinavir, ritonavir, nelfinavir, indinavir or amprenavir (sqv, rtv, nlfv, idv, apv, respectively). These drugs demonstrated a differential ability to sustain the generation of immature DCs (iDCs) with an altered phenotype, including low levels of CD1a, CD86, CD36 and CD209. DCs generated in the presence of rtv also failed to acquire the typical phenotype of mature DCs (mDCs), and secreted lower amounts of IL-12 and IL-15. Accordingly, these aberrant mDCs failed to support activation of autologous Natural Killer (NK) cells, and resulted highly susceptible to NK cell-mediated cytotoxicity. CONCLUSIONS/SIGNIFICANCE: Our findings uncover novel functional properties of PIs within the DC-NK cell cross-talk, unveiling the heterogeneous ability of members of this class drugs to drive the generation of atypical monocyte-derived DCs (MDDCs) showing an aberrant phenotype, a failure to respond appropriately to bacterial endotoxin, a weak ability to prime autologous NK cells, and a high susceptibility to NK cell killing. These unexpected properties might contribute to limit inflammation and viral spreading in HIV-1 infected patients under PIs treatment, and open novel therapeutical perspectives for this class drugs as immunomodulators in autoimmunity and cancer

    A Broad Profile of Co-Dominant Epitopes Shapes the Peripheral Mycobacterium tuberculosis Specific CD8+ T-Cell Immune Response in South African Patients with Active Tuberculosis.

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    We studied major histocompatibility complex (MHC) class I peptide-presentation and nature of the antigen-specific CD8+ T-cell response from South African tuberculosis (TB) patients with active TB. 361 MHC class I binding epitopes were identified from three immunogenic TB proteins (ESAT-6 [Rv3875], Ag85B [Rv1886c], and TB10.4 [Rv0288], including amino acid variations for Rv0288, i.e., A10T, G13D, S27N, and A71S for MHC allotypes common in a South African population (e.g., human leukocyte antigen [HLA]-A*30, B*58, and C*07). Inter-allelic differences were identified regarding the broadness of the peptide-binding capacity. Mapping of frequencies of Mycobacterium tuberculosis (M. tb) antigen-specific CD8+ T-cells using 48 different multimers, including the newly constructed recombinant MHC class I alleles HLA-B*58:01 and C*0701, revealed a low frequency of CD8+ T-cell responses directed against a broad panel of co-dominant M. tb epitopes in the peripheral circulation of most patients. The antigen-specific responses were dominated by CD8+ T-cells with a precursor-like phenotype (CD45RA+CCR7+). The data show that the CD8+ T-cell response from patients with pulmonary TB (prior to treatment) is directed against subdominant epitopes derived from secreted and non-secreted M. tb antigens and that variant, natural occurring M. tb Rv0288 ligands, have a profound impact on T-cell recognition

    Kompakte Lampenvorschaltgeraete mit erweiterbarem Einsatzbereich Technischer Bericht

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    Available from TIB Hannover: F04B1769 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman

    Vapor deposited micro heat pipes

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    A micro heat pipe, formed in a semiconductor substrate, carries heat from a region of heat flux in the substrate to a region of lower heat flux. The micro heat pipe is formed by cutting a groove into the substrate opposite a site where devices have been formed or are to be formed. Vapor deposited layers are then formed on the substrate to define the micro heat pipe. A fraction of the pipe is filled with a coolant or other working fluid and the pipe is sealed. A micro heat pipe may also be formed by etching a channel down into the substrate, oxidizing the surfaces of the channel, charging the channel with a cooling medium to fill a fraction of the channel and sealing the end of the channel. In operation, the working fluid evaporates in the region of high heat flux and condenses in the region of lower heat flux resulting in the transfer or redistribution of the fluid's heat of vaporization.U

    Vapor deposited micro heat pipes

    No full text
    A micro heat pipe, formed in a semiconductor substrate, carries heat from a region of heat flux in the substrate to a region of lower heat flux. The micro heat pipe is formed by cutting a groove into the substrate opposite a site where devices have been formed or are to be formed. Vapor deposited layers are then formed on the substrate to define the micro heat pipe. A fraction of the pipe is filled with a coolant or other working fluid and the pipe is sealed. A micro heat pipe may also be formed by etching a channel down into the substrate, oxidizing the surfaces of the channel, charging the channel with a cooling medium to fill a fraction of the channel and sealing the end of the channel. In operation, the working fluid evaporates in the region of high heat flux and condenses in the region of lower heat flux resulting in the transfer or redistribution of the fluid's heat of vaporization.U

    The Effectiveness of the Life Skills Program IPSY for the Prevention of Adolescent Tobacco Use: The Mediating Role of Yielding to Peer Pressure

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    In this study, the effectiveness of a life skills program to impede tobacco use in early adolescence was scrutinized. The focus was on the mediating role of yielding to peer pressure. The universal school-based life skills program IPSY (Information + Psychosocial Competence = Protection) against adolescent substance use was implemented over 3 years. Over the same time period, it was evaluated based on a longitudinal quasi-experimental design with an intervention and comparison group (4 measurement points; N = 1,657 German students, age 10 at T1). By applying a growth curve modeling approach, we found that participation in IPSY compared with non-participation predicted a slower increase in tobacco use over time, suggesting a significant intervention effect. Moreover, a parallel growth curve model revealed that less yielding to peer pressure induced by IPSY mediated the program effects on tobacco use over time
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