2 research outputs found

    Eficiencia de biofiltro atmosférico de musgos para la remoción de plomo (Pb) en el kilómetro 6.5 de la Carretera Central, Ate - 2018

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    El desarrollo de esta investigaciĂłn tiene como objetivo determinar cuĂĄl de los dos biofiltros de musgo Sematophyllum y Sphagnum moss es mĂĄs eficiente en la remociĂłn de plomo atmosfĂ©rico, en el kilĂłmetro 6.5 de la carretera central del distrito de Ate. La concentraciĂłn de material particulado con plomo atmosfĂ©rico existente durante muchos años fue de 313 ÎŒg/m3. Se colocaron 6 puntos de tratamiento en el ĂĄrea de trabajo, las cuales contenĂ­an 3 biofiltros de musgo por cada especie, en un total de 6 biofiltros, en una altura de 3 metros. El procedimiento para los biofiltros de musgos se pesĂł en cantidades de 100, 150 y 200 g a las especies de Sematophyllum y Sphagnum moss, esto se realizĂł para determinar cuĂĄl es la concentraciĂłn optima de plomo. Se analizĂł las propiedades fisicoquĂ­micas de los musgos Sematophyllum y Sphagnum moss necesarias para la remociĂłn del plomo. El tiempo de exposiciĂłn de los biofltros fue de 15 y 30 dĂ­as en el mes de octubre del 2018. Los resultados obtenidos fueron en la especie musgos Sematophyllum para 15 dĂ­as de 89.01% y en 30 dĂ­as de 73.33%, en la especie Sphagnum moss, se obtuvo porcentajes menores para 15 dĂ­as de 66.88 % y en 30 dĂ­as de 47,87 %, la especie que mejor remueve el plomo atmosfĂ©rico es el musgo Sematophyllum

    Evaluation of a quality improvement intervention to reduce anastomotic leak following right colectomy (EAGLE): pragmatic, batched stepped-wedge, cluster-randomized trial in 64 countries

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    Background Anastomotic leak affects 8 per cent of patients after right colectomy with a 10-fold increased risk of postoperative death. The EAGLE study aimed to develop and test whether an international, standardized quality improvement intervention could reduce anastomotic leaks. Methods The internationally intended protocol, iteratively co-developed by a multistage Delphi process, comprised an online educational module introducing risk stratification, an intraoperative checklist, and harmonized surgical techniques. Clusters (hospital teams) were randomized to one of three arms with varied sequences of intervention/data collection by a derived stepped-wedge batch design (at least 18 hospital teams per batch). Patients were blinded to the study allocation. Low- and middle-income country enrolment was encouraged. The primary outcome (assessed by intention to treat) was anastomotic leak rate, and subgroup analyses by module completion (at least 80 per cent of surgeons, high engagement; less than 50 per cent, low engagement) were preplanned. Results A total 355 hospital teams registered, with 332 from 64 countries (39.2 per cent low and middle income) included in the final analysis. The online modules were completed by half of the surgeons (2143 of 4411). The primary analysis included 3039 of the 3268 patients recruited (206 patients had no anastomosis and 23 were lost to follow-up), with anastomotic leaks arising before and after the intervention in 10.1 and 9.6 per cent respectively (adjusted OR 0.87, 95 per cent c.i. 0.59 to 1.30; P = 0.498). The proportion of surgeons completing the educational modules was an influence: the leak rate decreased from 12.2 per cent (61 of 500) before intervention to 5.1 per cent (24 of 473) after intervention in high-engagement centres (adjusted OR 0.36, 0.20 to 0.64; P < 0.001), but this was not observed in low-engagement hospitals (8.3 per cent (59 of 714) and 13.8 per cent (61 of 443) respectively; adjusted OR 2.09, 1.31 to 3.31). Conclusion Completion of globally available digital training by engaged teams can alter anastomotic leak rates. Registration number: NCT04270721 (http://www.clinicaltrials.gov)
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