Efecto Fitorremediador de Lemna Minor en aguas contaminadas de las lagunas de oxidación de Tácala – Castilla – Piura – 2021

En esta investigación se propuso evaluar el efecto fitorremediador y capacidad de absorción de la especie Lemna Minor, como alternativa tecnológica para el tratamiento de aguas residuales de la laguna de oxidación de A.H Tácala- castilla Según, Elisa Yohany Troncos Guerrero (2018, p.11) La situación que genera un gran problema de contaminación, es que las aguas residuales supuestamente tratadas de los distritos de Piura y castilla son usadas en los campos de cultivo y a veces desembocan en el rio Piura de forma indiscriminada. A todo esto, es necesario complementar el proceso con una mayor inversión en plantas de tratamiento para su mejor beneficio. Cabe resaltar que en la investigación se llevó a cabo una evaluación de campo dividida en cuatro visitas programadas (1 por semana); las cuales permitieron identificar el desarrollo presencial del trabajo de investigación, las cuales se podían identificar en campo como: Ph, temperatura, olores, color inusual de aguas, proliferación de algunos vectores, en las lagunas de oxidación de tácala – castilla se pudo visualizar la infiltración de aguas residuales, y por último el uso del agua residual para riego de plantas de tallo corto. Así también por acceso denegado a realizar el proyecto en la misma laguna de oxidación se diseñó un sistema de lagunas de oxidación piloto, con medidas de 2 m ancho x 2 m x1 m de profundidad en un terreno del AA. HH los médanos – castilla. Posteriormente el agua residual de las lagunas de oxidación de Tácala - Castilla fue recolectada y trasladada en la laguna piloto numero 01 con la especie fitorremediadora Lemna minor, las plantas fueron recolectadas del canal norte, carretera Marcavelica-Sullana (costado del rio chira), la fase de experimentación duro 1 mes. Según los resultados obtenidos: 1 muestreo inicial (aguas de las lagunas de oxidación tácala – castilla laguna 01) y 1 muestreo final (aguas sistema fitorremediador piloto, laguna numero 02) se observó que el sistema fitorremediador fue efectivo, ya que cumplen con los parámetros establecidos por el D.S N° 003 - 2010 de los Límites Máximos Permisibles del Perú

Recaudación tributaria y ejecución presupuestal de un gobierno local de la provincia de Trujillo, al 2021

La presente investigación tuvo como objetivo principal determinar el efecto de la recaudación tributaria y la ejecución presupuestal en un Gobierno Local de la provincia de Trujillo al 2021, para ello se realizó un estudio cuantitativo de tipo aplicada, diseño no experimental y de alcance descriptivo. La población estuvo conformada por los registros de la recaudación tributaria, y la ejecución presupuestal y se obtuvo como resultado que en ambas fuentes de financiamiento Recursos Determinados para el año 2020, determina un importe de S/ 567,316 (10.09%) de la misma forma recursos directamente recaudados lo que determina un importe de S/ 152,114, y para el año 2021, en la fuente recursos determinados determina un importe de S/ 581,124 (9.09%) y para Directamente Recaudados, determina un importe de S/ 296,007 (4.63%). Por lo tanto, se evidencia que para ambos periodos el gasto se convirtió solamente a nivel de devengado, siendo posible que solo llegó hasta el nivel de gasto comprometido. Se concluyó que la ejecución del gasto público, muestra deficiencias para gestionar eficazmente el total de la recaudación, ya que genera una brecha promedio del 13.26 % para los años 2020 y 2021 en las dos fuentes de financiamient

Rediseno de un secador piloto para lodos para planta de tratamiento de aguas servidas

75 p.La presente memoria de titulo desarrolla el trabajo de optimización de diseño para un prototipo de secador de lodos perteneciente a ESSBIO S.A. elaborado por el Sr. Ignacio Ramírez Vergara. Se trabajará principalmente en dos aspectos, la elaboración de un rediseño tomando como parámetro el tamaño medio de partícula de 12 mm, el cual fue un resultado del trabajo de titulación anterior, y el trabajo en el interior del secador modificando las aletas interiores que mueven el material a secar. Los resultados se compararan con los resultados del trabajo de titulación anterior y se concluirá cual es la influencia de las modificaciones para el modelo final de secador final./ ABSTRACT: The present work of title design optimization work for a sludge dryer prototype belonging to ESSBIO S.A. elaborated by Mr Ignacio Ramirez Vergara. We will work mainly on two aspects, the elaboration of a redesign taking as a parameter the average size of particle of 12 mm, which was a result of the work of previous qualifications, and the work inside the dryer modifying the interior fins that move the material to dry. The results were compared with the results of the work of previous qualifications and there will conclude which is the influence of the modifications for the final model of final dryer

Large Binocular Telescope Adaptive Optics System: New achievements and perspectives in adaptive optics

The Large Binocular Telescope (LBT) is a unique telescope featuring two co-mounted optical trains with 8.4m primary mirrors. The telescope Adaptive Optics (AO) system uses two innovative key components, namely an adaptive secondary mirror with 672 actuators and a high-order pyramid wave-front sensor. During the on-sky commissioning such a system reached performances never achieved before on large ground-based optical telescopes. Images with 40mas resolution and Strehl Ratios higher than 80% have been acquired in H band (1.6 micron). Such images showed a contrast as high as 10e-4. Based on these results, we compare the performances offered by a Natural Guide Star (NGS) system upgraded with the state-of-the-art technology and those delivered by existing Laser Guide Star (LGS) systems. The comparison, in terms of sky coverage and performances, suggests rethinking the current role ascribed to NGS and LGS in the next generation of AO systems for the 8-10 meter class telescopes and Extremely Large Telescopes (ELTs).Comment: 10 pages, 9 figures, Preented at SSPIE Optics + Photonics 2011, San Diego 20-25 August 201

The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L' Adaptive Optics Imaging

We present diffraction-limited \ks band and \lprime adaptive optics images of the edge-on debris disk around the nearby F2 star HD 15115, obtained with a single 8.4 m primary mirror at the Large Binocular Telescope. At \ks band the disk is detected at signal-to-noise per resolution element (SNRE) \about 3-8 from \about 1-2\fasec 5 (45-113 AU) on the western side, and from \about 1.2-2\fasec 1 (63-90 AU) on the east. At \lprime the disk is detected at SNRE \about 2.5 from \about 1-1\fasec 45 (45-90 AU) on both sides, implying more symmetric disk structure at 3.8 \microns . At both wavelengths the disk has a bow-like shape and is offset from the star to the north by a few AU. A surface brightness asymmetry exists between the two sides of the disk at \ks band, but not at \lprime . The surface brightness at \ks band declines inside 1\asec (\about 45 AU), which may be indicative of a gap in the disk near 1\asec. The \ks - \lprime disk color, after removal of the stellar color, is mostly grey for both sides of the disk. This suggests that scattered light is coming from large dust grains, with 3-10 \microns -sized grains on the east side and 1-10 \microns dust grains on the west. This may suggest that the west side is composed of smaller dust grains than the east side, which would support the interpretation that the disk is being dynamically affected by interactions with the local interstellar medium.Comment: Apj-accepted March 27 2012; minor correction

First Light LBT AO Images of HR 8799 bcde at 1.65 and 3.3 Microns: New Discrepancies between Young Planets and Old Brown Dwarfs

As the only directly imaged multiple planet system, HR 8799 provides a unique opportunity to study the physical properties of several planets in parallel. In this paper, we image all four of the HR 8799 planets at H-band and 3.3 microns with the new LBT adaptive optics system, PISCES, and LBTI/LMIRCam. Our images offer an unprecedented view of the system, allowing us to obtain H and 3.3$ micron photometry of the innermost planet (for the first time) and put strong upper-limits on the presence of a hypothetical fifth companion. We find that all four planets are unexpectedly bright at 3.3 microns compared to the equilibrium chemistry models used for field brown dwarfs, which predict that planets should be faint at 3.3 microns due to CH4 opacity. We attempt to model the planets with thick-cloudy, non-equilibrium chemistry atmospheres, but find that removing CH4 to fit the 3.3 micron photometry increases the predicted L' (3.8 microns) flux enough that it is inconsistent with observations. In an effort to fit the SED of the HR 8799 planets, we construct mixtures of cloudy atmospheres, which are intended to represent planets covered by clouds of varying opacity. In this scenario, regions with low opacity look hot and bright, while regions with high opacity look faint, similar to the patchy cloud structures on Jupiter and L/T transition brown-dwarfs. Our mixed cloud models reproduce all of the available data, but self-consistent models are still necessary to demonstrate their viability.Comment: Accepted to Ap

Mortality from gastrointestinal congenital anomalies at 264 hospitals in 74 low-income, middle-income, and high-income countries: a multicentre, international, prospective cohort study

Summary Background Congenital anomalies are the fifth leading cause of mortality in children younger than 5 years globally. Many gastrointestinal congenital anomalies are fatal without timely access to neonatal surgical care, but few studies have been done on these conditions in low-income and middle-income countries (LMICs). We compared outcomes of the seven most common gastrointestinal congenital anomalies in low-income, middle-income, and high-income countries globally, and identified factors associated with mortality. Methods We did a multicentre, international prospective cohort study of patients younger than 16 years, presenting to hospital for the first time with oesophageal atresia, congenital diaphragmatic hernia, intestinal atresia, gastroschisis, exomphalos, anorectal malformation, and Hirschsprung’s disease. Recruitment was of consecutive patients for a minimum of 1 month between October, 2018, and April, 2019. We collected data on patient demographics, clinical status, interventions, and outcomes using the REDCap platform. Patients were followed up for 30 days after primary intervention, or 30 days after admission if they did not receive an intervention. The primary outcome was all-cause, in-hospital mortality for all conditions combined and each condition individually, stratified by country income status. We did a complete case analysis. Findings We included 3849 patients with 3975 study conditions (560 with oesophageal atresia, 448 with congenital diaphragmatic hernia, 681 with intestinal atresia, 453 with gastroschisis, 325 with exomphalos, 991 with anorectal malformation, and 517 with Hirschsprung’s disease) from 264 hospitals (89 in high-income countries, 166 in middleincome countries, and nine in low-income countries) in 74 countries. Of the 3849 patients, 2231 (58·0%) were male. Median gestational age at birth was 38 weeks (IQR 36–39) and median bodyweight at presentation was 2·8 kg (2·3–3·3). Mortality among all patients was 37 (39·8%) of 93 in low-income countries, 583 (20·4%) of 2860 in middle-income countries, and 50 (5·6%) of 896 in high-income countries (p<0·0001 between all country income groups). Gastroschisis had the greatest difference in mortality between country income strata (nine [90·0%] of ten in lowincome countries, 97 [31·9%] of 304 in middle-income countries, and two [1·4%] of 139 in high-income countries; p≤0·0001 between all country income groups). Factors significantly associated with higher mortality for all patients combined included country income status (low-income vs high-income countries, risk ratio 2·78 [95% CI 1·88–4·11], p<0·0001; middle-income vs high-income countries, 2·11 [1·59–2·79], p<0·0001), sepsis at presentation (1·20 [1·04–1·40], p=0·016), higher American Society of Anesthesiologists (ASA) score at primary intervention (ASA 4–5 vs ASA 1–2, 1·82 [1·40–2·35], p<0·0001; ASA 3 vs ASA 1–2, 1·58, [1·30–1·92], p<0·0001]), surgical safety checklist not used (1·39 [1·02–1·90], p=0·035), and ventilation or parenteral nutrition unavailable when needed (ventilation 1·96, [1·41–2·71], p=0·0001; parenteral nutrition 1·35, [1·05–1·74], p=0·018). Administration of parenteral nutrition (0·61, [0·47–0·79], p=0·0002) and use of a peripherally inserted central catheter (0·65 [0·50–0·86], p=0·0024) or percutaneous central line (0·69 [0·48–1·00], p=0·049) were associated with lower mortality. Interpretation Unacceptable differences in mortality exist for gastrointestinal congenital anomalies between lowincome, middle-income, and high-income countries. Improving access to quality neonatal surgical care in LMICs will be vital to achieve Sustainable Development Goal 3.2 of ending preventable deaths in neonates and children younger than 5 years by 2030

Commissioning team members:

VST and OmegaCAM commissioned Four-telescope interferometry with PIONIER Spectra of extremely metal-poor star