Compost obtained from feces of dairy cattle vs. fertilizer on triticale production (X Triticum secale Wittmack)

El uso de abono es cada vez más frecuente en la agricultura por su efecto positivo sobre la fertilidad del suelo. El objetivo del presente estudio fue determinar la altura de planta, número de tallos por m2, longitud foliar, número de hojas por tallo y rendimiento de materia seca de triticale (X Triticum secale Wittmack), fertilizado con abono (humus de lombriz y ácidos húmicos) y urea. Los tratamientos fueron: humus de lombriz, ácidos húmicos, urea, humus de lombriz + urea, ácidos húmicos + urea y testigo. Se utilizó un diseño completo al azar, con 6 tratamientos y 3 repeticiones, en unidades experimentales de 60 m2 y densidad de siembra de 100 kg de semilla por ha. Los mayores resultados de producción indican que la combinación de la fertilización orgánica e inorgánica fue mejor que los demás tratamientos (p<0,05), sin embargo, no hubo diferencias en las propiedades bromatológicas (p>0,05). La producción de triticale en los tratamientos con urea fue hasta un 70% superior al testigo y a los tratamientos únicamente con abonos.The use of compost obtained from feces is increasingly common in agriculture for soil fertility, the objective of this study was to determine the plant height, number of stems per m2, leaf length, number of leaves per stem and dry matter yield of triticale (X Triticum secale Wittmack), fertilized with compost (humus and humic acids) and urea. A complete randomized design was used with 6 treatments and 3 replications in experimental units of 60 m2 and seeding density of 100 kg of seed per ha. The treatments were: humus, humic acids, urea, humus + urea, humic acids + urea and control. The higher production indicate that the combination of organic and inorganic fertilization was better than the other treatments (p <0.05), however, there were no differences in the bromatological properties (p> 0.05). The production of triticale in treatments with urea was up to 70% higher than the control and anothers treatments evaluated.Fil: Beltrán Santoyo, Miguel Ángel. Universidad Autónoma de San Luis Potosí (México)Fil: Álvarez Fuentes, Gregorio. Universidad Autónoma de San Luis Potosí (México)Fil: García Lopez, Juan Carlos. Universidad Autónoma de San Luis Potosí (México)Fil: Castro Rivera, Rigoberto

Improving OEE in a Peruvian SME: A Case Study on the Application of Lean Manufacturing Tools in the Metalworking Sector

In Peru, SMEs have been affected by the crisis that caused the COVID 19 pandemic. Likewise, the hard competition with Asian countries like China has been a reason for Peruvian SMEs deciding to work with high-quality products. However, poor machine and maintenance management, high percentage of rework, and excessive downtime are frequent problems faced by SMEs in the metalworking sector. For this reason, the bending area was identified as the most critical. In this study, the case of a Peruvian SME that produces air conditioning products was studied. In this case, the bending area was the most critical. Therefore, the main objective of this study is to prove how the use of lean manufacturing tools can impact the productivity of the bending area, thereby improving indicators such as OEE, cycle time, unnecessary routes, and space reduction

Increasing efficiency and reducing bias in the sampling of seed-dispersal interactions based on mist-netted birds

Efficient and unbiased sampling of ecological interactions is essential to our understanding of the functions they mediate. Seed dispersal by frugivorous birds is a key mutualism for plant regeneration and community dynamics. Mist-netting is one of the most widely used methods to sample avian seed dispersal through the identification of seeds in droppings of captured birds kept inside cloth bags. However, birds may drop seeds on the ground before being extracted from the net, leading to a fraction of missing information due to ineffective sampling. Worryingly, this fraction could be unevenly distributed across bird and plant species, leading to sampling biases. Here, we assess the effectiveness of using a 1-m wide mesh below mist nets to sample seeds dropped by entangled birds. We used data from birds mist-netted during one-year-round. We sampled nearly 50% of interaction events and 75% of dispersed seeds on the mesh band below the mist nets (i.e. lost information without this optimization). The proportion of seeds sampled on the mesh bands was not evenly distributed among bird species but strongly related to bird size, ranging from 57–63% in warblers to 84–94% in thrushes. Moreover, the proportion of seeds sampled on the mesh was negatively related to seed size, although this relationship was weaker. We also evaluated accumulation curves of species and pairwise interactions with increasing sampling effort, both with and without using the mesh bands. The number of seed species sampled increased by 21% when using the mesh bands and the number of pairwise interactions by 36%. Our findings provide strong evidence on how inefficient and biased traditional mist-netting can be for sampling community-wide seed–dispersal interactions. We thus urge the use of mesh bands in future studies to increase sampling effectiveness and avoid biases, which will ultimately improve our understanding of the seed dispersal function

Studying the Properties of PVdF-HFP Based Lithium Polymer Electrolytes Using non-ionic Surfactants as Plasticizers

[EN] In this study, two different non-ionic surfactants have been evaluated as a plasticizer in lithium polymer electrolytes and compared with an organic carbonate-based plasticizer. To that end, non-ionic surfactants with different molecular weight and structure have been selected (Triton? X-100 and Brij?L23) and compared with organic carbonates (EC:DEC1:1) as plasticizers in lithium polymer electrolytes. The effect of the plasticizer content, salt content and surfactant characteristics on properties such as ionic conductivity, thermal stability and electrochemical stability of lithium polymer electrolytes has been studied. The results obtained show that the non-ionic surfactants studied as plasticizers (Triton? X-100 and Brij?L23) give lithium polymer electrolytes with higher thermal and electrochemical stability than organic carbonates, thus making them promising plasticizers for lithium polymer electrolytes, especially for high voltage lithium-ion batteries. Surfactant structure could influence the ionic conductivity of the polymer electrolytes, with the linear surfactants being more suitable for this application.This research was funded by the Centro de Desarrollo Tecnologico Industrial-CDTI (ALMAGRID Project-CER-20191006) and by the Instituto Valenciano de Competitividad EmpresarialIVACE-FEDER (MATER Project-IMDEEA/2019/48)Zubizarreta Saenz De Zaitegui, L.; Gil Agustí, MT.; Espinosa-López, JC.; García Pellicer, M.; Quijano-Lopez, A. (2021). Studying the Properties of PVdF-HFP Based Lithium Polymer Electrolytes Using non-ionic Surfactants as Plasticizers. Materiale Plastice. 58(1):237-247. https://doi.org/10.37358/mp.21.1.5463S23724758

Using Flipped classroom at University to improve the chemistry learning.

The main objective of this paper was to improve the learning of Chemistry subject using Flipped classroom, because it makes class time more engaging. The lecture portion of General Chemistry courses in engineers degrees have been pushed outside the classroom using pre recording technology and steaming delivery of content, to make classes more interactive and participative. The Flipped classroom model has become one of the main topics in the higher education space in recent years thanks to improvements in technology. This year, the Flipped classroom model with the chemistry students at Malaga State University has been begun experimenting with. Statistical significance of the data has shown, and proved with, that implementing the Flipped classroom model could not only benefit professors, but it could also help us adapt the classes to the various learning styles that exist among the students. The study shows the results of surveys about student attitudes towards aspects of flipping the classroom.I Plan Propio Integral de Docencia, Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Deletion Syndrome 22q11.2: A Systematic Review

DiGeorge syndrome; Congenital anomalies; Velocardiofacial syndromeSíndrome de DiGeorge; Anomalías congénitas; Síndrome velocardiofacialSíndrome de DiGeorge; Anomalies congènites; Síndrome velocardiofacial22q11.2 deletion syndrome (DS 22q11.2) is a rare disease of genetic origin, caused by the loss of the q11.2 region of chromosome 22. It affects one in 4000 live newborns, and among the clinical manifestations that can occur in this syndrome are abnormalities in the parathyroid glands (producing calcium deficits), the palate, the heart and the thymus. It is also known as DiGeorge syndrome or velocardiofacial syndrome, among other names, depending on the clinical presentation of each individual. The main objective of the review was to update information on DS 22q11.2 from publications in the scientific literature. The daily activities of these patients are seriously impaired, due to the impact of the clinical manifestations. Interventions can be performed to improve their social, cognitive and emotional skills, thus increasing their ability to perform different daily activities

Susceptibility of juvenile european sea bass (dicentrarchus labrax) to different viral nervousnecrosis virus (VNNV) isolates

In this study, the susceptibility of 5-g juvenile European sea bass was evaluated by intramuscular injection (105 TCID50/g) using isolates belonging to the RGNNV and SJNNV genotypes as well as a reassortant isolate (RGNNV RNA1/SJNNV RNA2) obtained from Senegalese sole (Solea senegalensis). In these experimental infections, the cumulative mortality was determined. Furthermore, quantification of viral genome, by absolute real time PCR, and infective viral particles, by virus titration, was performed from brains of dead and survivor fish (30 days post-inoculation). In addition, anti-VNNV antibodies in sera from survivor animals were determined by indirect ELISA. Typical symptoms of VNN and mortality were only recorded in fish inoculated with the RGNNV (47% cumulative mortality) and the reassortant (33%) isolates. However, high levels of viral genome and infective viral particles were recorded in brain of survivor fish inoculated with the SJNNV isolate, although did not cause mortality or clinical signs. Specific antibody response, measured by indirect ELISA, was only observed in the VNNV-inoculated groups, with titres of 1/1024, 1/4096 and 1/8192 for RGNNV, SJNNV and reassortant inoculated animals, respectively.UNIVERSIDAD DE MÁLAGA. CAMPUS DE EXCELENCIA INTERNACIONAL ANDALUCÍA TEC

Effect of Hydrodynamic Conditions of Photobioreactors on Lipids Productivity in Microalgae

This research presents the effect of hydrodynamic conditions at different rates of aeration (1.4, 1.8, and 2.3 vvm) and the geometry of two photobioreactors with internal lighting on lipid productivity and other parameters of Chlorella vulgaris. A two-step nitrogen-reduction cultivation mode was applied for promoting lipid accumulation. The inoculum was cultivated initially at 90 mg L−1 N-NH4+, and at the end of the exponential phase, it was fed to 11 L photobioreactor at 20 mg L−1 of N-NH4+. The results showed that with similar aeration rates, the hydrodynamic regime in both photobioreactors was different. However, the increase in shear rate and agitation did not cause cell damage or photoinhibition. The maximum cell growth was 12 × 106 cells mL−1. The highest consumption of nitrogen was 19% and shear rates were of 120-340 s−1. The highest lipid productivity was reached in bubble column at 1.8 vvm with 0.650 mg·L−1 d−1

Abonos obtenidos del compostado de heces de ganado bovino de leche vs. fertilizante en la producción de triticale (X Triticum secale Wittmack)

The use of compost obtained from feces is increasingly common in agriculture for soil fertility, the objective of this study was to determine the plant height, number of stems per m2, leaf length, number of leaves per stem and dry matter yield of triticale (X Triticum secale Wittmack), fertilized with compost (humus and humic acids) and urea. A complete randomized design was used with 6 treatments and 3 replications in experimental units of 60 m2 and seeding density of 100 kg of seed per ha. The treatments were: humus, humic acids, urea, humus + urea, humic acids + urea and control. The higher production indicate that the combination of organic and inorganic fertilizationwas better than the other treatments (p 0.05). The production of triticale in treatments with urea was up to 70% higher than the control and anothers treatments evaluated.El uso de abono es cada vez más frecuente en la agricultura por su efecto positivo sobre la fertilidad del suelo. El objetivo del presente estudio fue determinar la altura de planta, número de tallos por m2, longitud foliar, número de hojas por tallo y rendimiento de materia seca de triticale (X Triticum secale Wittmack), fertilizado con abono (humus de lombriz y ácidos húmicos) y urea. Los tratamientos fueron: humus de lombriz, ácidos húmicos, urea, humus de lombriz + urea, ácidos húmicos + urea y testigo. Se utilizó un diseño completo al azar, con 6 tratamientos y 3 repeticiones, en unidades experimentales de 60 m2 y densidad de siembra de 100 kg de semilla por ha. Los mayores resultados de producción indican que la combinación de la fertilización orgánica e inorgánica fue mejor que los demás tratamientos (p0,05). La producción de triticale en los tratamientos con urea fue hasta un 70% superior al testigo y a los tratamientos únicamente con abonos

A new sports garment with elastomeric technology optimizes physiological, mechanical, and psychological acute responses to pushing upper-limb resistance exercises

This study aimed to compare the mechanical (lifting velocity and maximum number of repetitions), physiological (muscular activation, lactate, heart rate, and blood pressure), and psychological (rating of perceived exertion) responses to upper-body pushing exercises performed wearing a sports elastomeric garment or a placebo garment. Nineteen physically active young adults randomly completed two training sessions that differed only in the sports garment used (elastomeric technology or placebo). In each session, subjects performed one set of seated shoulder presses and another set of push-ups until muscular failure. The dependent variables were measured immediately after finishing the set of each exercise. Compared to the placebo garment, the elastomeric garment allowed participants to obtain greater muscular activation in the pectoralis major (push-ups: p = 0.04, d = 0.49; seated shoulder press: p < 0.01, d = 0.64), triceps brachialis (push-ups, p < 0.01, d = 0.77; seated shoulder press: p < 0.01, d = 0.65), and anterior deltoid (push-ups: p < 0.01, d = 0.72; seated shoulder press: p < 0.01, d = 0.83) muscles. Similarly, participants performed more repetitions (push-ups: p < 0.01; d = 0.94; seated shoulder press: p = 0.03, d = 0.23), with higher movement velocity (all p ≤ 0.04, all d ≥ 0.47), and lower perceived exertion in the first repetition (push-ups: p < 0.01, d = 0.61; seated shoulder press: p = 0.05; d = 0.76) wearing the elastomeric garment compared to placebo. There were no between-garment differences in most cardiovascular variables (all p ≥ 0.10). Higher diastolic blood pressure was only found after the seated shoulder press wearing the elastomeric garment compared to the placebo (p = 0.04; d = 0.49). Finally, significantly lower blood lactate levels were achieved in the push-ups performed wearing the elastomeric garment (p < 0.01; d = 0.91), but no significant differences were observed in the seated shoulder press (p = 0.08). Overall, the findings of this study suggest that elastomeric technology integrated into a sports garment provides an ergogenic effect on mechanical, physiological, and psychological variables during the execution of pushing upper-limb resistance exercises