Personal Skills, Job Satisfaction, And Productivity In Members Of High Performance Teams

The intention of the study is to identify the development of personal skills, as well as the increase of job satisfaction and productivity of the employee, as a result of their participation in high performance teams. Volunteered in the study 139 members of self-managed teams belonging to the Production Area, 39 of Operational Administrative teams, 19 members of Cross-Functional teams and 6 of 6-Sigma Projects, all of them belonging to a company of the Maquiladora Industry in Tijuana, B.C., Mico. The study indicates that 100% of the members of the Production Area teams and the Operational Administrative teams developed some personal skills or increased their satisfaction or productivity as a result of their participation in some kind of self-managed team. In Cross-Functional teams members, the changes took place in the 94.3% of the cases and in the 97% of the 6-Sigma teams members. There was also a significant difference found between the results of the four types of self-managed teams studied. This paper provides information to CEOs regarding the importance of the design and the implementation of working programs for self-managed teams; these not only will strengthen the employee achievement of a greater satisfaction and productivity, but will also allow them to develop personal skills

Jerarquizacion de productos en una empresa de aserrio

54 p.La memoria aborda un estudio de los productos generados por una empresa de aserrado de mediana capacidad ubicada en la Séptima Región del Maule. Se calculo la contribución individual a la utilidad, lo que permitió jerarquizar según su aporte a la utilidad total de la empresa. El estudio pretende contribuir a la toma de decisiones en la empresa, con la finalidad de elevar Las utilidades mediante la selección de los productos de mejor rendimiento y, por lo tanto, haciéndola mas competitiva frente a empresas similares. Los resultados permitieron identificar el orden de los productos de acuerdo a su aporte a la utilidad total de la empresa y mostraron una Clara diferencia entre ellos, dependiendo principalmente del sector de la troza de donde se extraen

Abruptio placentae: morbimortalidad y resultados perinatales

El desprendimiento prematuro de placenta normoinserta (DPPNI) o «abruptio placentae» se define como la separación parcial o completa de una placenta normalmente adherida antes del parto o después de la semana 20 del embarazo. Ocurre en el 0.5-2% de todos los nacimientos, y de estos, el 50% de los casos se acompa˜na de embarazos con síndrome hipertensivo, puede causar morbilidad grave, como coagulación intravascular diseminada, insuficiencia renal, transfusiones masivas e histerectomía. Por lo regular todas las complicaciones maternas graves del DPPNI son consecuencia de la hipovolemia, y de la enfermedad de base asociada al desprendimiento. La tasa de mortalidad materna es aproximadamente del 1%1.Objetivo: Describir los resultados neonatales y las complicaciones maternas en pacientes que presentaron abruptio placentae en el HGO del IMIEM. Método: Se realizó un estudio retrospectivo, transversal y descriptivo. Resultados: La edad promedio del grupo de estudio estuvo entre 21 y 35 anos (61.6%), el 20.9% ˜ fueron mujeres mayores de 35 anos, el 17.4% menores de 20 años, el 33.7% eran primigestas y el 66.3% multigestas Entre los principales factores de riesgo el 34.6% presentó cuadros hipertensivos del embarazo, seguido por la rotura prematura de membranas con un 22.1%. De los síntomas que las llevaron al hospital, el sangrado transvaginal fue el predominante con un 25.6%, hipertonía uterina un 22.1-10.5% de las pacientes ingresaron sin cuadro clínico de desprendimiento prematuro de placenta normoinserta. Las complicaciones que se presentaron fueron: choque hipovolémico el 15.1%, útero de Couvelaire el 8.1%, atonía uterina el 5.8%, y el 69.8% de las pacientes evolucionaron sin complicaciones; al 1.2% se les realizó histerectomía obstétrica. La vía de nacimiento fue en su mayoría abdominal con un 97.7-2.3% por vía vaginal. La tasa de mortalidad perinatal fue del 10.5%, de esta el 8.1% fueron muertes fetales. Se reportaron 2 muertes maternas cuya causa directa de la muerte no fue el desprendimiento prematuro de placenta normoinserta sino complicaciones debidas a preeclampsia-eclampsia. Conclusiones: El abruptio placentae es una catástrofe obstétrica que conlleva un alto riesgo materno-fetal, el diagnóstico y la interrupción oportuna del embarazo disminuyen de forma importante la morbilidad perinatal

Riesgo dietético para la presencia de dislipidemias en escolares

La asociación del consumo de alimentos con la presencia de enfermedades crónicas , en particular con las enfermedades cardiovasculares en niños es limitada . Los factores de riesgo cardiovascular como las dislipidemias, han sido descritos recientemente a edades cada vez más tempranas en los que los niños en edad escolar no han sido la excepción. La dieta de baja calidad es un factor de riesgo que debe ser intervenido y modificado en la población, sobre todo en edades tempranas.Objetivo: Identificar el riesgo dietético por el consumo de alimentos con elevado contenido de azúcares refinados, ácidos grasos saturados y colesterol para la presencia de dislipidemias en escolares. Materiales y métodos: Se diseñó y aplicó una encuesta de frecuencia de consumo de alimentos de riesgo, se calculó el riesgo dietético y se identificaron alteraciones lipídicas en niños. Se utilizó la razón de momios con intervalos de confianza al 95% para la medición del riesgo entre la dieta y las dislipidemias. Resultados: 17% de los escolares de la escuela privada presentaron consumo elevado de colesterol; en la escuela pública 59% presentaron elevado consumo de azúcares refinados, y 29% consumo elevado de ácidos grasos saturados. Las cifras de riesgo de colesterol sérico, triglicéridos y colesterol-LDL se identificaron con mayor frecuencia en los escolares de la institución privada, mientras que las cifras bajas de colesterol-HDL se identificaron con mayor frecuencia en los niños de la escuela pública. 64 escolares con riesgo dietético presentaron al menos un tipo de dislipidemia OR= 0.94; IC 95%, 0.59-1.50. Conclusiones: En ésta población, el consumo elevado de azúcares refinados es el factor de riesgo dietético de mayor frecuencia para la presencia de dislipidemias. La dieta de baja calidad es un factor de riesgo que debe ser modificado en la población, sobre todo en edades temprana

Investigation into the thermodynamics and kinetics of the binding of Cu2+ and Pb2+ to TiS2 nanoparticles synthesized using a solvothermal process

In the present study, titanium (IV) sulfide (TiS2) was synthesized and investigated for the removal of Cu2+ and Pb2+ ions from aqueous solutions. TiS2 nanoparticles synthesized through a solvothermal synthesis were characterized using x-ray diffraction (XRD) and scanning electron microscopy (SEM). The average particle size for the TiS2 material was determined to be 8.03 ± 0.98 nm from the diffraction pattern. Studies were performed to examine the effects of pH, temperature, time, and interfering ions on the binding of Cu2+ and Pb2+ to the TiS2. As well isotherm studies were performed to determine the binding capacity of TiS2 for both Cu2+ and Pb2+ ions. The pH profile studies showed optimal binding occurred at pH 2 for the sorption of both Cu2+ and Pb2+ to the TiS2. The isotherm studies showed the adsorption capacities at temperatures of 4, 22, and 45 °C for Cu2+ were 243, 222, and 153 mg/g, respectively. An opposite trend in the adsorption was observed for Pb2+ binding to the TiS2. The observed binding capacities for Pb2+ were 32, 166, and 357 mg/g, at temperatures of 4, 22, and 45 °C, respectively. The thermodynamic parameters for binding showed a non-spontaneous process for the sorption of Cu2+ whereas a spontaneous binding process was observed for the sorption of Pb2+. Additionally, the binding of Cu2+ on TiS2 in the presence of interfering ions (Na+, K+, Mg2+, and/or Ca2+) was observed to decrease at high concentrations; however, the binding of Pb2+ was unaffected by the presence of the same cations

Determinantes perceptuales de la intención de uso de Internet para el desarrollo del capital humano

En el marco de la Teoría del Capital Humano (TCH) y las Tecnologías de Información y Comunicación (TIC) se plantea la relación entre el uso de Internet y las percepciones de utilidad, facilidad y autoeficacia. Los resultados muestran que el determinante principal del uso de Internet es la percepción de utilidad (β = .46). El modelo obtuvo un adecuado ajuste con respecto al modelo de relaciones hipotéticas entre las variables perceptuales y actitudinales sobre la variable intencional. Se discuten las implicaciones del modelo en torno al desarrollo del capital humano y satisfacción del cliente en los ambientes laborales

Effect of Lanthanum Doping on the reactivity of unsupported CoMoS2 catalysts

In the present study, catalytic systems based on La-doping were developed to improve the activity and performance of CoMoS2 hydrodesulfurization catalysts. Lanthanum-doped at 5, 10, or 25% of the Co content in CoMoS2 hydrodesulfurization catalysts were synthesized through a solvothermal process. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses confirmed the catalysts were triphasic consisting of Co9S8, MoS2, and La2S3. The La doped catalysts showed enhanced catalytic activity compared with CoMoS2 synthesized under the same conditions. The CoMoS2 prepared under solvothermal synthesis conditions showed a catalytic activity of 6.80 mol g-1 s-1, however, the La0.05Co0.95MoS2 doping showed a catalytic activity of 6.51 mol g -1 s-1 whereas the La0.1Co0.9MoS2 and La0.25Co0.75MoS2 samples showed catalytic activities of 10.7 mol g-1 s-1. The reaction products indicated the major reaction pathway was direct desulfurization. The La0.25Co0.75MoS2 catalyst after one reaction cycle showed a lower amount of carbon, than the undoped CoMoS2 catalyst

Prevalence of Lentilacobacillus hilgardii over Lactiplantibacillus plantarum in Low-Temperature Spontaneous Malolactic Fermentation of a Patagonian Pinot Noir

The spontaneous malolactic fermentation (MLF) in a centenary winery from Patagonia, Argentina, is conducted by predominantly mesophilic Oenococcus oeni and Lactiplantibacillus plantarum. In this region, MLF takes place from 14 to 4 °C, leading to heat cellars incurring in higher costs and non-sustainable practices. Previously, psychrotrophic strains of O. oeni had been obtained from a Patagonian wine. The goal of this work was to identify the Lactobacillaceae microbiota related to low-temperature MLF and assess their contribution. Nine sychrotrophicc Lentilactibacillus hilgardii strains were identified by sequencing the 16S rRNA gene, and the strains typified by RAPD-PCR. All strains consumed L-malic acid at 4 and 10 °C in sterile wine. The selected UNQLh1.1 strain revealed implantation capacity and L-malic acid consumption at 4 and 10 °C in the presence of the native microbial consortium. Furthermore, the histidine decarboxylase (hdc) gene was not detected in any of the Len. hilgardii strains. The prevalence of Len. hilgardii under low-temperature conditions represents a novelty compared to previous findings of LAB diversity in the MLF of Patagonian wines. The native Patagonian psychrotrophic Len. hilgardii strains are a new player in fermentations conducted at low temperatures with the potential to be used as a sustainable MLF starter.Fil: Manera, Camila. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Rivas, Gabriel Alejandro. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Flores, Naiquen Elizabeth. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Brizuela, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Caballero, Adriana Carmen. Universidad Nacional del Comahue; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Semorile, Liliana Carmen. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Valdes la Hens, Danay. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Ellagic Acid Recovery by Solid State Fermentation of Pomegranate Wastes by Aspergillus niger and Saccharomyces cerevisiae : a Comparison

Abstract: Fermentation in solid state culture (SSC) has been the focus of increasing interest because of its potential for industrial applications. In previous studies SSC of pomegranate wastes by Aspergillus niger has been extensively developed and optimized for the recovery of ellagic acid (EA), a high value bioactive. In this study we comparatively investigated the SSC of powdered pomegranate husks by A. niger and Saccharomyces cerevisiae and evaluated the recovery yields of EA by an ultrasound and microwave-assisted 7:3 water/ethanol extraction. Surprisingly enough, the yields obtained by S. cerevisiae fermentation (4% w/w) were found 5-fold higher than those of the A. niger fermented material, with a 10-fold increase with respect to the unfermented material. The EA origin was traced by HPLC analysis that showed a significant decrease in the levels of punicalagin isomers and granatin B and formation of punicalin following fermentation. Other extraction conditions that could warrant a complete solubilization of EA were evaluated. Using a 1:100 solid to solvent ratio and DMSO as the solvent, EA was obtained in 4% yields from S. cerevisiae fermented husks at a high purity degree. Hydrolytic treatment of S. cerevisiae fermented pomegranate husks aorded a material freed of the polysaccharides components that gave recovery yields of EA up to 12% w/w

Removal of Cu2+ and Ni2+ from Aqueous Solution using SnO2 Nanomaterial effect of: pH, Time, Temperature, interfering cations

Tin oxide, SnO2, nanomaterial was synthesized and tested for the removal of Cu2+ and Ni2+ ions from aqueous solutions. Various parameters for the binding were investigated in batch studied, which included pH, time, temperature, and interferences. In addition, isotherm studied were performed to determine the maximum binding capacity for both Cu2+ and Ni2+ ions. The optimal binding pH determined from the effects of pH were to be at pH 5 for both the Cu2+ and Ni2+ ions. The isotherm studies were performed at temperatures of 4°C, 25 °C, and 45 °C for both the Cu2+ and Ni2+ ions and were found to follow the Langmuir isotherm model. The binding capacities for the Cu2+ ions were 2.63 mg/g, 2.95 mg/g and 3.27 mg/g at the aforementioned temperatures, respectively. Whereas the binding capacities for Ni2+ were 0.79 mg/g, 1.07 mg/g, and 1.46 mg/g at the respective temperatures. The determined thermodynamic parameters for the binding showed that the binding processes for the reactions were endothermic, as the ΔG was observed to decrease with decreasing temperatures. As well the ΔH was 28.73 kJ/mol for Cu2+ (III) and 13.37 kJ/mol for Ni2+. The ΔS was observed to be 92.65 J/mol for Cu2+ and 54.53 J/mol for Ni2+. The free energy of adsorption for the Cu2+ was determined to be 13.99 kJ/mol and the activation energy for the binding of Ni2+ was determined to be 8.09 KJ/mol. The activation energy data indicate that the reaction was occurring through chemisorptio