Efecto de diferentes sistemas de fertilización en el rendimiento de frijol de humedad residual en Veracruz

En otoño-invierno 2009/2010, se establecieron dos módulos experimentales, para determinar el efecto de sistemas de fertilización en el rendimiento del frijol. Los módulos se establecieron en José Azueta y Medellín, en el sur y centro de Veracruz, respectivamente. Se evaluaron los tratamientos: 1. Sin fertilización, 2. Inoculación de 1 kg de Glomus intrarradices en 45 kg de semilla ha-1 (Gi) + la dosis 40N-20P2O5-0K2O (Fq) y 3. Gi + Fq + fertilización foliar orgánica con Nutripro Xtra-Alga, Nutripro Forte y Aminofit Xtra a 1 L ha-1 cada uno. Cada tratamiento ocupó una superficie de 3000 m2. El rendimiento de grano se estimó mediante tres muestreos de 3 m2 en cada tratamiento. Se realizó análisis de varianza por localidad, en diseño completamente al azar, considerando cada muestreo como una repetición, y un análisis combinado (localidades-fertilización); para la separación de promedios se aplicó la prueba de Tukey (p < 0,05). En José Azueta se obtuvo un rendimiento promedio de 1471,33 kg ha-1, significativamente superior al de Medellín (826,67 kg ha-1). La inoculación a la semilla con G. intrarradices, en combinación con la dosis 40N-20P2O5-0K2O, incrementó en 87,6% el rendimiento de grano, en relación al testigo sin fertilización, pero con la aplicación complementaria de fertilizantes foliares orgánicos, no se obtuvo un incremento adicional en el rendimiento

Determination of the efficacy of anthelmintics used in the control of gastrointestinal nematodes of goats from Tucumán, Argentina

En la Argentina, el 93% de la producción caprina en la Argentina es desarrollada por pequeños productores deagriculturas de subsistencia, quienes, por lo general, utilizan antihelmínticos sin asesoramiento profesional, lo que, probablemente, hallevado al desarrollo de resistencia, comprometiendo seriamente la sustentabilidad del control de nematodos. El objetivo de esteestudio es determinar la eficacia de la ivermectina, el albendazol y el levamisol para el tratamiento de la gastroenteritis verminosa encuatro grupos de ocho caprinos cada uno, mediante el Test de Reducción del Conteo de Huevos (TRCH). Los resultados demostraronun 100% de reducción del número de HPG para los grupos tratados con albendazol y levamisol y un 17% de reducción para el grupotratado con ivermectina, con respecto al grupo control, lo que permite inferir que existe resistencia a este fármaco.Almost 93% of goat production in Argentina is developed by small farmers, who generally use anthelmintics without professional advice, which has led to the development of resistance, seriously compromising the sustainability of nematode control. This study aims to determine the efficacy of ivermectin, albendazole and levamisole for the treatment of verminous gastroenteritis in four groups of eight goats each, using the Faecal Egg Count Reduction Test (FECRT). The results showed a 100% reduction in the number of EPG for the groups treated with albendazole and levamisole and a 17% reduction for the group treated with ivermectin, compared to the control group, which allows us to infer that there is resistance to this drug.Fil: Chocobar, Marianna Laura Elis. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Diambra, Priscila. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Terán Alurralde, María del Rosario. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Bustos, María José. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Prado, María José. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Gonzalez Moreno, Candelaria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Fernández, Jorge Luis. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Salinas, Carmen. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Solaligue, Paola Blanca del Valle. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; ArgentinaFil: Rosa, Ramiro José. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentin

Differences between GaAs/GaInP and GaAs/AlInP interfaces grown by movpe revealed by depth profiling and angle-resolved X-ray photoelectron spectroscopies

GaAs/GaInP and GaAs/AlInP interfaces have been studied using photoelectron spectroscopy tools. The combination of depth profile through Ar+ sputtering and angle resolved X-ray photoelectron spectroscopy provides reliable information on the evolution of the interface chemistry. Measurement artifacts related to each particular technique can be ruled out on the basis of the results obtained with the other technique. GaAs/GaInP interface spreads out over a shorter length than GaAs/AlInP interface. The former could include the presence of the quaternary GaInAsP in addition to the nominal GaAs and GaInP layers. On the contrary, the GaAs/AlInP interface exhibits a higher degree of compound mixture. Namely, traces of P atoms in a chemical environment different to the usual AlInP coordination were found at the top of the GaAs/AlInP interface, as well as mixed phases like AlInP, GaInAsP or AlGaInAsP, located at the interface

Magnetic order and disorder in nanomagnets probed by superconducting vortices

We have studied two nanomagnet systems with strong (Co/Pd multilayers) and weak (NdCo alloy films) stray magnetic fields by probing the out-of-plane magnetic states with superconducting vortices. The hybrid samples are made of array of nanomagnets embedded in superconducting Nb thin films. The vortex motion detects relevant magnetic state features, since superconducting vortices are able to discriminate between different magnetic stray field strengths and directions. The usual matching effect between the superconducting vortex lattice and the periodic pinning array can be quenched by means of disorder magnetic potentials with strong stray fields at random. Ordered stray fields retrieve the matching effect and yield asymmetry and shift in the vortex dissipation signal. Furthermore vortices can discriminate the sizes of the nanomagnet magnetic domains, detecting magnetic domain sizes as small as 70 nm. In addition, we observe that the vortex cores play the crucial role instead of the supercurrents around the vortex.We thank Spanish MINECO grants FIS2013-45469, FIS2016-76058 (AEI/FEDER, UE), Spanish CM grant S2013/MIT-2850. IMDEA Nanociencia acknowledges support from the ‘Severo Ochoa’ Programme for Centres of Excellence in R&D (MINECO, Grant SEV-2016-0686). DG acknowledges RYC-2012-09864, S2013/MIT-3007 and ESP2015-65597-C4-3-R for financial support.Peer reviewe

Impact of operatoŕs experience on peri-procedural outcomes with Watchman FLX: Insights from the FLX-SPA registry

Background: The Watchman FLX is a device upgrade of the Watchman 2.5 that incorporates several design enhancements intended to simplify left atrial appendage occlusion (LAAO) and improve procedural outcomes. This study compares peri-procedural results of LAAO with Watchman FLX (Boston Scientific, Marlborough, Massachusetts) in centers with varying degrees of experience with the Watchman 2.5 and Watchman FLX. Methods: Prospective, multicenter, 'real-world' registry including consecutive patients undergoing LAAO with the Watchman FLX at 26 Spanish sites (FLX-SPA registry). Implanting centers were classified according to the center's prior experience with the Watchman 2.5. A further division of centers according to whether or not they had performed ≤ 10 or > 10Watchman FLX implants was prespecified at the beginning of the study. Procedural outcomes of institutions stratified according to their experience with the Watchman 2.5 and FLX devices were compared. Results: 359 patients [mean age 75.5 (SD8.1), CHA2DS2-VASc 4.4 (SD1.4), HAS-BLED 3.8(SD0.9)] were included. Global success rate was 98.6%, successful LAAO with the first selected device size was achieved in 95.5% patients and the device was implanted at first attempt in 78.6% cases. There were only 9(2.5%) major peri-procedural complications. No differences in efficacy or safety results according to the centeŕs previous experience with Watchman 2.5 and procedural volume with Watchman FLX existed. Conclusions: The Watchman FLX attains high procedural success rates with complete LAA sealing in unselected, real-world patients, along with a low incidence of peri-procedural complications, regardless of operatoŕs experience with its previous device iteration or the number of Watchman FLX devices implanted

Effectiveness of Following Mediterranean Diet Recommendations in the Real World in the Incidence of Gestational Diabetes Mellitus (GDM) and Adverse Maternal-Foetal Outcomes: A Prospective, Universal, Interventional Study with a Single Group. The St Carlos Study

We reported that a Mediterranean Diet (MedDiet), supplemented with extra-virgin olive oil (EVOO) and pistachios, reduces GDM incidence and several other adverse outcomes. In order to assess its translational effects in the real world we evaluated the effect of MedDiet from 1st gestational visit in GDM rate compared with control (CG) and intervention (IG) groups from the previously referred trial. As secondary objective we also compared adverse perinatal outcomes between normoglycemic and diabetic women. This trial is a prospective, clinic-based, interventional study with a single group. 1066 eligible normoglycaemic women before 12 gestational weeks were assessed. 932 women (32.4 ± 5.2 years old, pre-gestational BMI 22.5 ± 3.5 kg/m2) received a motivational lifestyle interview with emphasis on daily consumption of EVOO and nuts, were followed-up and analysed. Binary regression analyses were used to examine the risk for each pregnancy outcome, pregnancy-induced hypertension, preeclampsia, gestational weight gain (GWG), caesarean-section, perineal trauma, preterm delivery, small (SGA) and large for gestational age (LGA), and Neonatal Intensive Care Unit admissions. GDM was diagnosed in 13.9%. This rate was significantly lower than the CG: RR 0.81 (0.73–0.93), p < 0.001 and no different from the IG: RR 0.96 (0.85–1.07), p = 0.468. GWG was lower in diabetic women (10.88 ± 6.46 vs. 12.30 ± 5.42 Kg; p = 0.013). Excessive weight gain (EWG) was also lower in GDM [RR 0.91 (0.86–0.96); p < 0.001] without a significant increase of insufficient weight gain. LGA were also lower (1 (0.8%) vs. 31 (3.9%); p < 0.05)), and SGA were similar (5 (3.8%) vs. 30 (3.7%)). LGA were associated to EWG (RR 1.61 (1.35–1.91), p < 0.001). Differences in other maternal-foetal outcomes were not found. In conclusions an early MedDiet nutritional intervention reduces GDM incidence and maternal-foetal adverse outcomes and should be universally applied as 1st line therapy. GDM might not be consider as a high risk pregnancy any longer

Raíces y alas: recuerdos y ficciones

El segundo número de la colección Laboratorio Transmedia (ISSN: 2794-0861) contiene 36 relatos escritos durante el curso 2021/2022 por estudiantes de la Universidad para Mayores