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The objective of this work was to study, the effect of two irrigation treatments on soil moisture content, growth and yield variables in the Cayman grass (Brachiaria hybrid). The cultivar employed was CIAT BRO2 / 1752 grown in double row in concrete containers of 1,56 m2. Irrigation treatments consisted of applying 50 and 100 % of ETc, (T 50 and T 100, respectively). Bottom fertilization was performed before planting with complete NPK (9-13-17) and urea (46-0-0), applying to each channel 0,1and 0,04 kg, respectively. The irrigation was applied through an automated system of micro spray and the delivery of the water was controlled by valves placed conveniently in each treatment. The results showed a significant effect of the treatments on the soil water content where the T 50 plants showed a water deficit at 50 and 74 days after sowing (DAS), also the effect of the irrigation treatments on the growth variables was observed where significant differences were only found in the accumulation of dry mass of the aerial part, root and total of T 100 plants. The relative content of water decreased in plants T 100 although this did not influence to obtain higher results in dry mass production (t ha-1). [ABSTRACT FROM AUTHOR]

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Water and saline stress affect markedly plant growth and yield. It is hoped that these stresses are intensified a cause of global climate change. Citrus, a perennial crop with a long horticultural life and a world importance are susceptible species to these kinds of stresses. For this reason, the objective of this review was to analize the effects that water (drought and flooding) and saline stress cause on citrus crop and describing some of strategies proposed at present, to reduce plant damaged induced by them. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Ciencia y Tecnología is the property of Revista de Ciencia y Tecnologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Sociedad Entomológica Argentina is the property of Sociedad Entomologica Argentina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Death pass through a succession of rapid and progressive phases of destructuration of the organism as a biological unit. Under this paradigm, lifeless body of a person is seen as one object; just as the Cartesian or logical positivism of the living body. As we were concerned about everyday human dead bodies are disrespected, degraded and viewed as simple objects, we decided to do this work, whose objective was to put forward a reflexive theory about the significance of the dead human body for some members of the health team and other public officials. This work was conducted under qualitative considerations with an epistemic matrix phenomenology. We used the method of Spilgerberg. Data collection was carried out by an interview to a pathologist, autopsy assistant, funeral personnel and police officer. They were intentionally selected. Two categories are described : treatment of the dead human body and the human body without life. Key elements were preservation of human corpse dignity and its abuse. We performed an axial coding structure, its contrast and theoretical approach. Generated reflexive theory was: the human lifeless body is subjected to physical and verbal abuse by studied subjects. [ABSTRACT FROM AUTHOR]

An experiment was conducted in order to compare the efficiency among different mycorrhizal formulations: a liquid suspension LicoMic®, and EcoMic®, a solid suspension, on tomato plant development. A randomized complete design was used, where 20 tomato plants per treatment were grown in individual gutters, where different mycorrhizal formulations and an uninoculated control were studied. Mycorrhizal, water relation and yield measurements were recorded. Mycorrhizal colonization among several treatments was different according to crop development. The highest fungal values were obtained at fructification stage. The highest increases on plant growth and fungal behavior were achieved in a liquid suspension treatment with statistical differences, when compared to the rest of inoculated treatments and uninoculated control, which, in turn exhibited a significant native fungal colonization rate; however, it did not imply a remarkable influence on yield. [ABSTRACT FROM AUTHOR]

The "synergies" created by means of the major media mergers in the United States over the past decade-the combination of massive libraries of content with multiple distribution channels-have been heralded as important benefits for consumers. Have these synergies really brought about an improvement of consumer welfare? The media are charged with providing an important service to their citizen-consumers-thorough and unbiased information that will aid them in making conscious and conscientious decisions in the voting booth and in other aspects of their consumer and citizen lives. The past decade has witnessed a trend toward media concentration, accelerated by the passage of the 1996 Telecommunications Act, As various authors have noted, concentration in specific media sectors, already at a high level, increased markedly during the 1990s. The premise behind these mergers, estimated at $300 billion in the 1990s alone, is that conglomerate media companies can create "synergies" when combining print, broadcast, film, recording, and publishing within the "walls" of one large firm. It is estimated that at least 90 percent of the content of prime time network television originates within these conglomerates. The bitter irony, in this day of hundreds of cable channels and new media technologies, is that control over the access to these critical pipelines of information is more centralized than ever.

El artículo discute los detalles sobre el Tratado de Montevideo, que fue firmado por ministros latinoamericanos el 18 de febrero de 1960. El Tratado representa una indicación positiva en cuanto a la cooperación económica latinoamericana. Se menciona la flexibilidad del Tratado en comparación con la del Tratado de Roma, establecido por la Comunidad Económica Europea en 1957.

Achieving an efficient use of irrigation water in rice cultivation, not only responds to the management of irrigation, also depends on the response of the plant to physiological and biochemical level of it, to adapt and recover from the water deficit and to complete its biological cycle. The experiment was carried out at the Zaidín Experimental Station, Granada, Spain, under semicontrolled conditions in plastic pots, with 'INCA LP-5' rice plants, which were cultivated under anaerobic conditions and exposed to water deficit, the suspension of the water lamina at three stages of its development, at 30, 40 and 50 days after transplantation (DAT) for a period of 15 days and evaluated after the recovery period at 122 DAT. In general, plants recovered from the water stress to which they were exposed during their vegetative phase, which was evidenced through increased water potential and stomatal conductance, also increased the content of hydrogen peroxide and oxidative damage to lipids. In addition, a direct relationship was found between these variables (hydric potential - stomatal conductance and hydrogen peroxide - oxidative damage to lipids). These variables indicated that plants exposed to water stress at 30 DAT, showed a higher recovery state than those exposed to 40 and 50 DAT, response may influence crop yield. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate arbuscular mycorrhizal fungi (Glomus cubense) functional viability and colonization ability in liquid medium. Two experiments were conducted, one studied spores fungal viability in liquid medium and sterile water was used in control around six months. Average 100 spores were used. In second text, we studied spores ability colonizing stored by six months in sorghum (Sorghum vulgare Perz.) plants. Mycorrhizal performance indicators were determined (colonization frequency and intensity and protein total) and plants growth and development indicators (dry mass root of air). Data were analyzed using Statgraphics Centurion for Windows and used the Duncan test with a significance of 5% in the cases where the ANOVA was significant. Results showed Glomus cubense spores viability after six months, with marked loss of viability in the variant preserved in sterile distilled water. Colonization studies demonstrated spores functional stability on sorghum plants, due to were achieved superior colonization levels in plants inoculated with respect to non- inoculated. Results demonstrated viability and functional stability of liquid inoculant retained up to six months. [ABSTRACT FROM AUTHOR]

Since 1981, a working group of Materials Testing Institute of Engineering University of Uruguay have been carrying out research activities about biomechanical behaviour of different external fixators used all over the world with an orthopaedist of the highest qualification and experience. In reference to external fixators for treatment of extremities fractures, for fifteen years we have developed a new tube-tube clamp design, that allows the use of three tubes modular fixators, which have the best properties in terms of manoeuvrability and movement freedom permitting the correct alignment of the components to join, with stability comparable to the rigid conventional fixators. In order to optimize the clamp design, stability evaluation tests were carried out of different designs, with different tighten grades, by determining the sliding limit which is defined as the load necessary to achieve a permanent deformation (unloaded) of 10% of the total deformation when the load is applied. According to the most stability designed clamp, a modular fixator that was tested with different tighten grades was assembled, for evaluating its mechanical behaviour. In this case the stability index was similar to the same parameter obtained in rigid conventional fixators of lower manoeuvrability and movement freedom, for a surgery room usual tight. This system of modular fixator developed in Uruguay has been used around the world for more than fifteen years and represents a new concept of external fixator which is in force after fifteen years of its development. Thousands of people who have been operated on all over the world, confirm the excellent results obtained from the above mentioned clamp in a modular fixator system. [ABSTRACT FROM AUTHOR]

In this piece of work, the mechanical behaviour of the fourth family of metallic implantations was studied . These, are used in fractures fixing (osteosynthesis) and they are denominated internal fixers, compared in the same conditions with the screwed plates. At the first stage, several assemblings were built up. Artificial materials with different density to simulate the different kind of bones were used. To simulate the spongy bone, Swiss medium density (6720) and low density (6710) foams were used. To simulate the cortical bone, wood tubes made in Uruguay and plastic tubes made in Switzerland, were used. At the second stage, all the tests which produced at the first stage different results between one and another implantation, were repeated using cow bones and human bones. As implantations, titanium long plates LPC with ten holes were used, which have a developed sketch which allows to use them with titanium or stainless screws in order to build the screwed plate or with titanium threaded head screws to form the internal fixer. The following tests were carried out: compression, flexion and torsion, using an Universal INSTRON press, model 1011, series No. 478, with devices made in Uruguay, adapted in each case to be applied according to stipulated solicitations. In all cases of assembling mounted with spongy bone where the same kind of test was repeated using the same configuration of the assembling for the three kind of materials (artificial, cow bone and human bone), the results obtained were concordant. In some cases, the results obtained from the built up assembling, for the two kinds of implantations, were similar, but in all those in which there were differences, the internal fixer had a stiffer behaviour than the screwed plates. The most relevant of the therapeutic repercussions, is the minor remnant deformation in the mounted assembling on spongy bone using internal fixers. [ABSTRACT FROM AUTHOR]