Blast Wave Characteristics and TNT Equivalent of Improvised Explosive Device at Small scaled Distances

A significant number of airblast test have been carried out with the purpose to characterise and analyse the properties of improvised explosive device (IED) with non-conventional explosives in terms of knowing the effects on people and/or structures. Small devices with 1.5 kg of explosive, initiated with a detonating cord have been studied. Seven different mixtures have been tested with two types of ammonium nitrate AN (technical and fertilizer) in different forms like prills or powder. In some cases, the ammonium nitrate has been mixed with fuel oil while in others, it has been mixed with aluminum. The TNT equivalent based on pressure, impulse, arrival time, positive phase duration and shock front velocity have been calculated and analysed for each mixture. Comparing the field test data obtained with respect to the representation of the UFC 3-340-02 values, it can be seen that the parameters measured are consistent. The IEDs with fertilizer ammonium nitrate do not detonate with the present charge conditions so the shockwave generated is only due to the detonating cord. When using the technical ammonium nitrate, ANFO can partially detonate and generate a potentially dangerous shockwave. Finally, the IED with AN and aluminum produces a TNT equivalent close to one when the technical AN is used

Uveítis Parasitaria: caso clínico en el Hospital Teodoro Maldonado Carbo, 2015

La uveítis es la patología del tracto uveal que describe la inflamación de la úvea en sus tres segmentos: anterior, medio, posterior o panuveitis. Dentro de las uveítis infecciosas se encuentran las causadas por infestaciones parasitarias, las cuales son endémicas en nuestro país. El diagnóstico se lo hace mediante una buena anamnesis, examen físico completo y valoración oftalmológica basada en la agudeza visual, biomicroscopía con lámpara de hendidura y fondo de ojo para poder determinar la localización del parásito. No existe un tratamiento específico para dicha patología, siendo la única forma efectiva, aunque difícil y no siempre posible, la extracción quirúrgica del parásito. A continuación se presenta un caso clínico de una paciente de sexo femenino quien consulta por edema de hemicara izquierda acompañado de edema periorbitario izquierdo y baja visión del ojo del mismo lado, a la cual se le realizó un examen oftalmológico completo y se encontró la presencia de un parásito tubular adherido a la capsula anterior del cristalino del ojo afectado. Se instauró tratamiento médico y se realizó la extracción quirúrgica del parásito.

Direct preparation of standard functional interfaces in oxide heterostructures for 2DEG analysis through beam-induced platinum contacts

Two-dimensional electron gas (2DEG) in SrTiO3/LaAlO3 heterostructures has been extensively studied in the last few years; however, little attention has been given to a practical way to contact electrically the low dimensional gas at the interface. This work demonstrates a method to contact the 2DEG formed at the oxide interfaces connected by platinum electrodes which were made by the decomposition of organometallic gas using focused ion beams. On the surface, the electrodes were defined through photolithography, and at the interface, the electrodes were deposited through the focused ion beams and electrons, which were then evaluated. The quality of the interface electrodes was evaluated at two different partial oxygen pressures (pO2) used for the film deposition: low (10−4 mbar) and high (10−1 mbar). The electrode deposition conditions using electrons or ions have resulted in different rates of metal deposition and interaction with the interface leading to either metallic (2DEG) or insulating behavior

NITROGEN IN THE INITIAL GROWTH AND PHOTOSYNTHESIS PHOTOCHEMICAL IN Alibertia sessilis (Vell.) K. Schum

The use of N fertilizers can contribute to seedling production in native species, such as Alibertia sessilis (Vell.) K. Schum, a fruit plant of the Cerrado ecoregion. Considering that there are few studies on mineral nutrition for this species, the aim of this study was to evaluate the effect of N on the growth and photosynthesis photochemical of A. sessilis. The experiment was carried out in plastic pots in a greenhouse with five N (urea) concentrations: 0, 25, 50, 75, and 100 mg kg-1. The experimental design used was a randomized block design with four repetitions. At day 180 after transplantation, morphometric and photochemical characteristics, including biomass and seedling quality, were evaluated. Seedling survival, the stem diameter of the harvest, and the height/diameter ratio were not influenced by N. The maximum height was 14.38 cm with 54.2 kg-1 N. The greatest number of leaves and value of the chlorophyll index were found in seedlings produced with maximum doses of N. The photochemical characteristics of photosynthesis, except initial fluorescence, were positively influenced with N concentrations between 60-85 mg kg-1 N. The largest fresh leaf and stem biomass was 2.391 and 0.257 g plant-1 with 54.0 and 33.0 mg kg-1 of N, respectively. The multivariate analysis of the major components explained 79.81% of the remaining data variability. The seedlings of A. sessilis responded positively during the initial growth phase, reflected in their biomass, with N concentrations close to 50.0 mg kg-1

Estudio de la Percepción del Clima Organizacional dentro de la Empresa Agrosavia Sede Popayán

N/AEl presente trabajo se realiza con el fin de hacer un estudio sobre la percepción del Clima Organizacional dentro de la Empresa Agrosavia Sede Popayán, para identificar cuáles son las acciones más influyentes realizadas por los colaboradores para tener un excelente clima organizacional desde el ambiente psicológico, emocional que contribuyen de manera directa en las condiciones de trabajo en la actualidad. Siendo esta una corporación que posee un rentabilidad adecuada, pero que, sin embargo ha dejado a un lado la fidelización de los trabajadores a la empresa, por lo tanto el objetivo de este trabajo es conocer el modelo de aplicación al clima organizacional como una herramienta principal en el desarrollo del clima organizaciones e identificar los diferentes factores que hacen que no sea un clima agradable dentro de la misma y se pueda cumplir con los objetivos y metas de cumplimiento dentro de la empresa.The present work is carried out in order to carry out a study on the perception of the Organizational Climate within the Company Agrosavia Headquarters Popayán, to identify which are the most influential actions carried out by collaborators to have an excellent organizational climate from the psychological, emotional environment that contribute directly to current working conditions. This being a corporation that has an adequate profitability, but that, however, has left aside the loyalty of the workers to the company, therefore the objective of this work is to know the application model to the organizational climate as a main tool in the development of the organizational climate and identify the different factors that make it not a pleasant climate within it and the objectives and compliance goals within the company can be met

FORMAÇÃO DE MUDAS DE NIM (Azadirachta indica A. JUSS.) EM DIFERENTES SUBSTRATOS

A produção de mudas é uma das fases mais importantes do cultivo de espécies florestais. Mudas de qualidade adequada são fundamentais no crescimento inicial e desenvolvimento das espécies. O presente trabalho teve por objetivos avaliar os efeitos de diferentes substratos na formação de mudas de Nim (Azadirachia indica A. Juss). O experimento foi conduzido em ambiente protegido (telado 50%), na Faculdade de Engenharia - UNESP/Campus de Ilha Solteira, no período de 04/03/2009 - 19/05/2009. Os tratamentos foram: (TI ) - solo + composto orgânico (2: 1), (T2) - solo + composto orgânico + areia, (2:1:1), (T3) - solo + composto orgânico + adubo de liberação lenta, (2: 1 ) com adição de 3g de Basacote (fertilizante de liberação lenta) por litro de substrato, (T4) - solo + composto orgânico + adubo mineral (NPK 04-14-08), (2:1) com adição de 6g do adubo por litro de substrato. Foram realizadas as seguintes avaliações: altura das plantas, diâmetro da base das plantas e teor de clorofila das folhas. O uso de adubo de liberação lenta é a melhor escolha para fins de produção de mudas, produzindo mudas mais desenvolvidas em altura e diâmetro e com maior produção de clorofila, levando a planta a ter uma tonalidade de verde mais forte nas folhas, e plantas mais vigorosas