Meteor cruise M91 was supported by the BMBF projects SOPRAN II and III (FKZ 03F0611A and FKZ 03F662A). We thank the Peruvian authorities for authorising us to conduct the study in their territorial waters. We also would like to thank our Peruvian colleagues from IMARPE (M. Graco, A. Bernal, G. Flores, and V. León) for their logistical support to our work. Sample analysis was funded by the UK Natural Environment Research Council (NERC) through grant NE/H00548X/1 and by the School of Natural Sciences, University of East Anglia. We gratefully acknowledge the NOAA Air Resources Laboratory for the provision of the HYSPLIT transport and dispersion model and the READY website (http://www.arl.noaa.gov/HYSPLIT.php) and two anonymous reviewers for their comments on our manuscript.

Bulk aerosol samples collected during cruise M91 of FS Meteor off the coast of Peru in December 2012 were analysed for their soluble trace metal (Fe, Al, Mn, Ti, Zn, V, Ni, Cu, Co, Cd, Pb, Th) and major ion (including NO−3 and NH+4) content. These data are among the first recorded for trace metals in this relatively poorly studied region of the global marine atmosphere. To the north of ∼ 13◦ S, the concentrations of several elements (Fe, Ti, Zn, V, Ni, Pb) appear to be related to distance from the coast. At the south of the transect (∼ 15–16◦ S), elevated concentrations of Fe, Cu, Co and Ni were observed. These may be related to the activities of the large smelting facilities in the south of Peru or northern Chile. Calculated dry deposition fluxes (3370–17 800 and 16–107 nmolm−2d−1 for inorganic nitrogen and soluble Fe respectively) indicated that atmospheric input to...

Después de leer el artículo «Las competencias TIC de losestudiantes que ingresan en la universidad: una experienciaen la Facultad de Ciencias de la Salud de una universidadlatinoamericana»1, este documento plantea que los gradosuniversitarios capaciten a los estudiantes en poseer compe-tencias en el manejo de las TIC.Asimismo, este estudio pone énfasis en la construcción delas competencias en el proceso de ense ̃nanza-aprendizaje delos estudiantes. Esta condición subyace del entorno digital,puesto que se enfrentan a un mundo globalizado con unagran cantidad de información a su alcance. Sin embargo,algunas veces el entorno social y el contexto educativo nocontribuyen con esta perspectiva, ya que evidencian defi-ciencias en la sistematización digital. Por ello es un tantodifícil conocer qué saberes requieren los estudiantes segúnlas exigencias de los estándares digitales.

Siembras comerciales de maíz Asgrow 7573 (AS 7573) en los municipios de Tlalixcoyan, Paso de Ovejas y Cosoleacaque, Veracruz, México, en 2006-2007 presentaron una enfermedad caracterizada por manchas pequeñas en hojas, irregulares, de aspecto húmedo, que se extendieron a lo largo de la lámina foliar, formando rayas translúcidas, que se tornaban de color blanco-pajizo. Frecuentemente, el tejido presentó desgarramiento y aspecto atizonado. En ocasiones se observó una pudrición en las espigas envueltas por hojas enfermas. En algunas de las plantas con síntomas se hicieron cortes transversales de los tallos y se observó necrosis vascular. En los medios de cultivo BK, AN y CPG se aislaron en todos los casos colonias bacterianas color blanco, redondas y convexas. La patogenicidad se confirmó en plántulas sanas de maíz. Las cepas bacterianas se identificaron como Acidovorax avenae...

The objective of the research was to determine the efficiency of municipal solid waste management in the Cajamarca region, as stipulated in Law No. 27314-General Solid Waste Law. The approach was qualitative, with a non-experimental cross-sectional design, having as population-sample the 13 provinces of the Cajamarca region: Jaén, San Ignacio, Chota, Cutervo, Cajamarca, Celendín, San Miguel, Contumaza, Cajabamba, Santa Cruz, San Marcos, San Pablo and Hualgayoc. Among the results, it was found that the critical aspects that hinder the implementation of the Solid Waste Management System by the provincial municipalities of the Cajamarca region, in accordance with the provisions of Law No. 27314, are because they do not have an environmental technical team (92%)., they do not have workers specialized in solid waste (92%), resources are not allocated for compliance with the Comprehensive En...

En la ciudad de Huaral el sistema de recolección de residuos sólidos tiene más de 50 años; es desde ese momento que se empezó a acumular los residuos sólidos en una zona llamada PAMPA LOS PERROS; que, en aquel entonces, estaba relativamente lejos de la ciudad y de los pobladores, pero como toda sociedad también crece. La calidad del ambiente en el botadero se desconoce, pero debido a la acumulación de los residuos se generan gran cantidad de emisiones propias de un botadero y juntándolas con la incineración de los mismos por partes se concluye en un gran foco de contaminación. Se aplicaran dos métodos de toma de muestra, para la toma de partículas en suspensión será el ensayo, correspondiente a la toma de muestras con un Hi-Vol de PM-io en los puntos de entrada y salida del viento (Barlovento y Sotavento) y una toma de muestras con un tren de muestreo, para las emisiones p...

Adjudican con fines de Reforma Agraria terrenos abandonados y eriazos en cuatro departamentos. Documento que forma parte del “Catálogo de normas legales. Una mirada del Sector Cultura desde el Boletín del Diario El Peruano, Dic. 1980 – Dic. 1985”

Adjudican con fines de Reforma Agraria terrenos abandonados y eriazos en cuatro departamentos. Documento que forma parte del “Catálogo de normas legales. Una mirada del Sector Cultura desde el Boletín del Diario El Peruano, Dic. 1980 – Dic. 1985”

Katahdin' potato plants were grown under conditions that did not induce tuberization (noninducing conditions) and the foliage was sprayed with either a growth retardant (BAS-111) at 1000 mg·L ⁻¹ or distilled water. Other plants, grown under tuber-inducing conditions, received a foliar spray of gibberellic acid (GA 3 ) at 100 mg·L ⁻¹ or distilled water. After 1 week, treatments were repeated. Two-node stem segments were excised from the apical, subapical, medial, and basal sections of each plant 72 hours after the second foliar treatment, disinfested, and inserted into flasks containing 50 mL of Murashige and Skoog medium (2% sucrose). After 3 weeks in a darkened incubator adjusted to 24 °C, tuberization response was evaluated. Orthogonal contrasts revealed significant differences between induced and noninduced controls for tuber number, diameter, and fresh mass. BAS-111 reduced ...

In this manuscript we report the flag-dipole spinors dual structure direct definition and analyze the properties behind the corresponding operator which generates such structure. This particular construction may be interesting for cosmological, phenomenological and mathematical physics applications. In addition, we analyse the behaviour of the flag-dipole spinors under action of discrete symmetries, facing an unconventional property encoded on (CPT)2.

El presente trabajo de investigación evaluó el rendimiento y la acción conservante del aceite esencial de orégano (Origanum vulgare L.) cultivado en seis zonas altoandinas de la región Amazonas (Levanto-2400 msnm, Huancas-2558 msnm, Taquia-2680 msnm, La Jalca-2800 msnm, Cuemal-3021 msnm y Cohechan- 3250 msnm); para lo cual se realizó una destilación por arrastre de vapor en hojas y flores desecadas de orégano para la evaluación del rendimiento de aceite esencial; la acción conservante del aceite esencial se realizó mediante la evaluación del pH, acidez, mesófilos, asimismo la evaluación sensorial de los atributos de olor y color en carne molida de cerdo. Las plantas de orégano cultivadas en las localidades de Taquia y Jalca Grande presentaron el mayor rendimiento de aceite esencial (1,82 y 1,94%, respectivamente); asimismo, el aceite esencial proveniente de la localidad de...

El presente trabajo de investigación evaluó el rendimiento y la acción conservante del aceite esencial de orégano (Origanum vulgare L.) cultivado en seis zonas altoandinas de la región Amazonas (Levanto-2400 msnm, Huancas-2558 msnm, Taquia-2680 msnm, La Jalca-2800 msnm, Cuemal-3021 msnm y Cohechan- 3250 msnm); para lo cual se realizó una destilación por arrastre de vapor en hojas y flores desecadas de orégano para la evaluación del rendimiento de aceite esencial; la acción conservante del aceite esencial se realizó mediante la evaluación del pH, acidez, mesófilos, asimismo la evaluación sensorial de los atributos de olor y color en carne molida de cerdo. Las plantas de orégano cultivadas en las localidades de Taquia y Jalca Grande presentaron el mayor rendimiento de aceite esencial (1,82 y 1,94%, respectivamente); asimismo, el aceite esencial proveniente de la localidad de...

El presente trabajo de investigación evaluó el rendimiento y la acción conservante del aceite esencial de orégano (Origanum vulgare L.) cultivado en seis zonas altoandinas de la región Amazonas (Levanto-2400 msnm, Huancas-2558 msnm, Taquia-2680 msnm, La Jalca-2800 msnm, Cuemal-3021 msnm y Cohechan- 3250 msnm); para lo cual se realizó una destilación por arrastre de vapor en hojas y flores desecadas de orégano para la evaluación del rendimiento de aceite esencial; la acción conservante del aceite esencial se realizó mediante la evaluación del pH, acidez, mesófilos, asimismo la evaluación sensorial de los atributos de olor y color en carne molida de cerdo. Las plantas de orégano cultivadas en las localidades de Taquia y Jalca Grande presentaron el mayor rendimiento de aceite esencial (1,82 y 1,94%, respectivamente); asimismo, el aceite esencial proveniente de la localidad de...

Hydrolysable tannins are natural polyphenols susceptible to hydrolysis that can be extracted from different vegetable plants. Tara pods, of Peruvian origin, concentrate a high tannin content and, besides their low exploitation impact, their tannin extract has shown high potential industrial applications due to their ability to form complexes with a broad variety of metal ions. However, developing an anticorrosive pigment of low-cost, high efficiency and reduced environmental impact is still a challenge. Herein, tannin-rich pigments were synthesized with Tara powder and zinc ions to produce metallic complexes known as tannates for corrosion protection. The anticorrosive behavior of zinc tannates was studied by direct current electrochemical techniques on pigment extracts and electrochemical impedance spectroscopy tests by analyzing pigmented primers and painting systems. Scanning electron...

Work engagement is a construct that integrates feelings of vigor, dedication and absorption (Schaufeli, Salanova, Gonzalez-Roma and Bakker, 2002). The purpose of this study is to investigate the factorial validity of the Utrecht Work Engagement Scale (UWES) with versions of 15 and 9 items, in a sample by 145 teachers from Lima, Peru. We used exploratory analysis and confirmatory factor analysis. The results show that the UWES has adequate psychometric properties, while respecting its three-dimensional structure, and particularly the 9 items version showed better indices of adjustment. Future studies will be required to confirm these findings.

O conhecimento dos parâmetros hídricos de uma cultura é fundamental para o incremento da produtividade sem o desperdício de água. Objetivou-se com o presente trabalho determinar a evapotranspiração (ETc) e o coeficiente de cultivo (Kc) da cultura de feijão-caupi (Vigna unguiculata L.) cv. Novaera, em condições de solo com e sem o uso de cobertura morta. O experimento foi conduzido no campus Cauamé da Universidade Federal de Roraima, em Boa Vista, RR, entre os meses de abril a julho de 2014. A evapotranspiração de cultivo (ETc) foi obtida por meio de lisímetro de drenagem. Os resultados evidenciaram que a ETc do feijão-caupi para ciclo da cultura sem e com cobertura morta foram de 311,0 e 260,4 mm, com valores médios de 3,5 e 3,0 mm dia-1, respetivamente. O estádio fenológico de maior demanda hídrica foi o reprodutivo atingindo valores de 5,4 mm dia-1 em solo sem cobert...

Irrigation consumes large amounts of water, and minimizing consumption and maximizing the production are important to a proper crop management . In order to obtain information for irrigation management, the aim of the present study was to determine evapotranspiration (ETc), crop coefficient (Kc) and water use efficiency (WUE) of maize grown in soil with and without cover, duringthe various stages of development, using drainage lysimeters. The experiment was conducted in Cauamé campus of the Federal University of Roraima, from 19/04/2014 to 08/07/2014, in Boa Vista, RR. The reference evapotranspiration (ETo) was estimated by the Penman-Monteith method. The results of the corn ETc during the crop cycle in soil with and without coverage were 421.5 and 351.0 mm, respectively. The daily average of ETc were 4.1 mm day-1 for bare soil and 3.4 mm day-1 for soil with cover. The ground cover led ...

En este webinar, se presenta nuestro estudio de prospectiva de la cadena de valor de peces ornamentales, publicación que nos permitirá identificar tendencias estratégicas para construir una visión al 2030 para esta importante cadena de valor.

This document includes the experience in the design, development and validation of a mobile application conceptualized as an instrument for basic teaching and self-learning of the Shipibo - Konibo language. It was created to be used in Bilingual Educative Institutions of preschool level, located in the Peruvian native communities.This App is intended to support the different education gaps in Shipibo-Konibo communities. The App name is BAKE that means child in Shipibo-Konibo language. It works offline and it has been developed for mobile devices with android operative system, considering they would be used in the remote Shipibo-Konibo communities.As part of the validation processes, a comparison test between the use of the application and the use of traditional education in Cantagallo community in Lima (the only Shipibo-Konibo community in Lima) has been developed. The results have been ...

Purpose: We present a physician survey of the impact of 21-gene Breast Recurrence Score test results on treatment decisions in clinical practice in Latin America.Methods: This prospective survey enrolled consecutive patients at 14 sites in Argentina, Colombia, Mexico, and Peru who had routine 21-gene testing. Physician surveys captured patient and tumor characteristics and treatment decisions before and after 21-gene test results. The survey spanned the period before and after Trial Assigning Individualized Options for Treatment (TAILORx) results reported (June 2018). Overall net percent change in adjuvant chemotherapy recommendations was estimated, and asymptotic 95% CIs with continuity correction were calculated. The proportion with a change between pretest treatment recommendation and actual treatment received was calculated overall and by Recurrence Score groups per TAILORx.Results: ...