992 resultados para Pre-Colombian art


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We have investigated the temporal distribution of dengue (DEN) virus serotypes in the department (state) of Santander, Colombia, in relation to dengue incidence, infection pattern, and severity of disease. Viral isolation was attended on a total of 1452 acute serum samples collected each week from 1998 to 2004. The infection pattern was evaluated in 596 laboratory-positive dengue cases using an IgG ELISA, and PRNT test. The dengue incidence was documented by the local health authority. Predominance of DEN-1 in 1998 and DEN-3 re-introduction and predominance in 2001-2003 coincided with outbreaks. Predominance of DEN-2 in 2000-2001 coincided with more dengue hemorrhagic fever (DHF). DEN-4 was isolated in 2000-2001 and 2004 but was not predominant. There was an annual increase of primary dengue infections (from 13.7 to 81.4%) that correlated with frequency of DEN-3 (r = 0.83; P = 0.038). From the total number of primary dengue infections DEN-3 (81.3%) was the most frequent serotype. DHF was more frequent in DEN-2 infected patients than in DEN-3 infected patients: 27.5 vs 10.9% (P < 0.05). DEN-3 viruses belonged to subtype C (restriction site-specific-polymerase chain reaction) like viruses isolated in Sri-Lanka and other countries in the Americas. Our findings show the importance of continuous virological surveillance to identify the risk factors of dengue epidemics and severity.

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The methanol extracts from five different plant families (Asteraceae, Euphorbiaceae, Melastomataceae, Rubiaceae, and Solanaceae) collected at Regional Natural Park Ucumarí (Colombia), were screened for their acetylcholinesterase inhibitory activity through the modified Ellman's spectrophotometric method. The best inhibitory activities on this study were shown by the extracts of Solanum leucocarpum Dunal (IC50 = 204.59 mg/l) and Witheringia coccoloboides (Damm) (IC50 = 220.68 mg/l), both plants belonging to the Solanaceae family.

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This booklet contains the facts about the vaccine against diphtheria, tetanus, whooping cough (pertussis) and polio, and the MMR booster given to children at the age of three years and four months.�

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Leaflet for parents explaining why a healthy break is so important for pre-school children and some tips and ideas for healthy nutritious breaks.�

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Poster explaining why a healthy break is important.�

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Background: Reduced re'nal function has been reported with tenofovir disoproxil fumarate (TDF). It is not clear whether TDF co-administered with a boosted protease inhibitor (PI) leads to a greater decline in renal function than TDF co-administered with a non-nucleoside reverse transcriptase inhibitor (NNRTI).Methods: We selected ail antiretroviral therapy-naive patients in the Swiss HIV Cohort Study (SHCS) with calibrated or corrected serum creatinine measurements starting antiretroviral therapy with TDF and either efavirenz (EFV) or the ritonavir-boosted PIs, lopinavir (LPV/r) or atazanavir (ATV/r). As a measure of renal function, we used the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation to estimate the glomerular filtration rate (eGFR). We calculated the difference in eGFR over time between two therapies using a marginal model for repeated measures. In weighted analyses, observations were weighted by the product of their point of treatment and censoring weights to adjust for differences both in the sort of patients starting each therapy and in the sort of patients remaining on each therapy over time.Results: By March 2011, 940 patients with at least one creatinine measurement on a first therapy with either TDF and EFV (n=484), TDF and LPVlr (n=269) or TDF and ATV/r (n=187) had been followed for a median of 1. 7, 1.2 and 1.3 years, respectively. Table 1 shows the difference in average estimated GFR (eGFR) over time since starting cART for two marginal models. The first model was not adjusted for potential confounders; the second mode! used weights to adjust for confounders. The results suggest a greater decline in renal function during the first 6 months if TDF is used with a PI rather than with an NNRTI, but no further difference between these therapies after the first 6 months. TDF and ATV/r may lead to a greater decline in the first 6 months than TDF and LPVlr.Conclusions: TDF co-administered with a boosted PI leads to a greater de cline in renal function over the first 6 months of therapy than TDF co-administered with an NNRTI; this decline may be worse with ATV/r than with LPV/r.

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The antioxidant activity of the crude n-hexane, dichloromethane, and methanol extracts from 25 species belonging to the Asteraceae, Euphorbiaceae, Rubiaceae, and Solanaceae families collected at natural reserves from the Eje Cafetero Ecorregión Colombia, were evaluated by using the spectrophotometric 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging method. The strongest antioxidant activities were showed by the methanol and dichloromethane extracts from the Euphorbiaceae, Alchornea coelophylla (IC50 41.14 mg/l) and Acalypha platyphilla (IC50 111.99 mg/l), respectively. These two species had stronger DPPH radical scavenging activities than hydroquinone (IC50 151.19 mg/l), the positive control. The potential use of Colombian flora for their antioxidant activities is discussed.

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En el relativament breu lapse de temps que suposen les tres darreres dècades, l'art contemporani xinès ha passat de ser pràcticament invisible i desconegut per al públic general, a ser present en un gran nombre d'escenaris a nivell internacional relacionats amb el món de l'art, sobre tot des de finals de la dècada dels noranta. El present TdR ha intentat apropar-se a qüestions com la imatge i les idees que sobre la RP Xina s'han transmès en l'última dècada a través de les obres o de les accions dels artistes xinesos contemporanis més exposats o cotitzats internacionalment i que viuen a la Xina, i a com s'ha arribat a inserir la producció artística d'aquests autors en el procés de globalització i hibridació de la cultura que estem vivint. Hem delimitat el camp de recerca, bàsicament a l'estudi de l'obra de cinc autors (Song Dong, Ai Weiwei, Zeng Fanzhi, Yue Minjun i Wang Qingsong) i a la seva presència en l'escena internacional de l'art contemporani a través de les subhastes de les dues cases més importants del món, Christie's i Sotheby's.

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En les últimes dècades, una gran varietat d'intervencions psicològiques basades en teràpies interpersonals, cognitiu-conductuals, sistèmiques i farmacològiques han anat guanyant terreny en el tractament dels trastorns de la conducta alimentària Junt amb aquest tipus de teràpies, han començat a emergir aproximacions multidisciplinàries com per exemple la incorporació de teràpies experimentals combinades amb una o dues formes de teràpia més tradicionals en el tractament dels TCA. Alguns programes fins i tot han incorporat teràpies alternatives i holístiques, com l'art teràpia, que funcionen com a nucli de la seva filosofia. Tanmateix, actualment no existeixen estudis publicats que corroborin l'eficàcia d'aquest tipus de teràpies en els tractaments dels TCA. Així doncs, el propòsit d'aquest treball és el de destacar, explorar i aprofundir en els diferents tipus d'art teràpia utilitzats en el tractament dels TCA, així com estimular la discussió pel que fa a les investigacions futures sobre art teràpia i el tractament dels trastorns alimentaris.

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Hipòtesi afirmativa de partida amb l'objectiu de justificar i demostrar les dades que la confirmin, sobre dos temes principals (conducta i expectatives). Presentació de la mostra, de les variables, del procediment, resultats, discussió, conclusions i prospectiva. Les conclusions és que si Influeix en la conducta del subjecte les expectatives externes, amb la conseqüent modificació de la conducta.