May 25, 2013
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La red hidráulica de los árboles exigida al límite por el cambio climático

La red hidráulica de los árboles exigida al límite por el cambio climático

La doctora Sandra J. Bucci integró un equipo internacional de 24 científicos reunidos por una universidad alemana, con el fin de crear una síntesis global sobre la resistencia a la cavitación por sequía en plantas de ecosistemas boscosos, incluyendo los arbustales y las sabanas alrededor del mundo. La investigación se inició a fines de 2009 y los resultados arrojaron que la mayoría de los árboles, incluso aquellos en las selvas tropicales, funcionan muy cerca de su umbral de seguridad hidráulica, lo cual los deja muy vulnerables a las sequías extremas.

Universidad Nacional de la Patagonia San Juan Bosco
May 20, 2013 - Natural Sc.


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Carbon Dioxide Storage

Carbon Dioxide Storage

Geological capture of carbon dioxide has arguments in favor and against and it is in experimental stage. It might permit to capture the CO2 generated in electric power stations and industrial sources and inject it, for example, in deep saline aquifers. A group of scientists studies the interaction of this gas with the water present in aquifers.

Universidad Nacional de General Sarmiento
January 21, 2013 - Exact Sc.


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Great Potential of Argentina to Produce Bioenergy

Great Potential of Argentina to Produce Bioenergy

Our country might satisfy the electricity demand through the energy released by vegetation fires. This was shown by a study which encourages the design of sustainable productive systems, which decrease the deforestation carried out today to expand the agricultural frontier in Chaco’s region. And it proposes to use the wood’s biomass which is eventually burnt in natural vegetation fires to produce electricity.

Universidad de Buenos Aires
Diciembre 19, 2012 - Agricultural & Forest Sc.


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Wall Lizards will become Extinct due to Global Warming

Wall Lizards will become Extinct due to Global Warming

An international research project, which focuses in local genus and species, determined that in less than 70 years, the 20 percent of the wall lizard species of the planets will become extinct. In order to carry out the study, an artificial lizard model with microchips was used, as well as a mathematical extinction risk model. The loss of diversity of wall lizards will have consequences for all the food chain.

Universidad Nacional de San Juan
September 24, 2012 - Natural Sc.


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Work to Decrease Exhaust Pipes’ Pollution

Work to Decrease Exhaust Pipes’ Pollution

New cars already have catalytic converters to eliminate some substances. However, cold start is still a problem. A team of researchers studies a new method to eliminate all the contaminating elements using active metals’ nanoparticles.

Universidad Nacional del Litoral
August 06, 2012 - Engineering


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Teachers Produce a New Immune Sensor

Teachers Produce a New Immune Sensor

It is a new immune electrochemical sensor produced jointly with professionals from the Republic University in Montevideo, Uruguay. By means of the development the amount of many substances can be measured, such as herbicides and toxins in water, food, natural antioxidants, among others. The researchers carried out a test to measure the herbicide molinate, used in rice cultivations in water samples.

Universidad Nacional de Río Cuarto
May 21, 2012 - Exact Sc.


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Argentina’s Cattle Greenhouse Effect

Argentina’s Cattle Greenhouse Effect

Cattle generate greenhouse effect gases and particularly ruminants are the main methane gas emitters, a gas which has a global warming power 25 times greater than carbon dioxide. Researchers from the School of Agronomy evaluate how to decrease these gases through modifications in the animals’ diet, responsible for the 75% of the 80 million tons of methane cattle generates per year in the world.

Universidad de Buenos Aires
May 14, 2012 - Agricultural & Forest Sc.


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The Biggest Data Base about Plants in the World

The Biggest Data Base about Plants in the World

The data base, created to investigate biodiversity and climate change, contains around 3 million individual data about 69 thousand plant species. Its creation was possible thanks to the international contribution of scientists from 106 institutions. The initiative, which is new due to the amount of information, as well as due to its global collaborative style, is managed by a coordinating committee formed by Sandra Díaz, researcher from the UNC.

Universidad Nacional de Córdoba
April 30, 2012 - Natural Sc.


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Less Greenhouse Gases as a Consequence of Direct Sow

Less Greenhouse Gases as a Consequence of Direct Sow

Argentina has one of the bigger sown areas with direct sow in the world. This agricultural system emits low levels of nitrous oxide to the atmosphere. The emission volume of this kind of gases was estimated up to nowadays only by the Intergovernmental Panel on Climate Change (IPCC). Researchers from the School of Agronomy carry out a surveying of this data and the first results show that the levels might be inferior to those established by the IPCC.

Universidad de Buenos Aires
January 30, 2012 - Agricultural & Forest Sc.


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Solar Panels: A non-contaminating Energetic Option

Solar Panels: A non-contaminating Energetic Option

Solar energy is one of the increasing renewable sources, due to its great potential. Teachers from the UNLaM developed a project which seeks to take advantage of solar radiation to generate energy using solar panels. The construction of these panels is based in recycled raw materials and they have a long lasting useful life, the advantages of the low ecologic impact and the possible application of these devices to every day life.

Universidad Nacional de La Matanza
January 23, 2012 - Engineering


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“Climate Change is Neither New, nor Men’s Fault”

“Climate Change is Neither New, nor Men’s Fault”

A research made by scientists from the Conicet and the University says that climate change was not produced cyclically during thousands of years and that its main cause is solar radiation. According to the researchers’ hypothesis, global warming won’t be prevented by the human action and its highest peak will be reached in 600 years. Some traces were obtained in Bahía Blanca’s estuary. They will look for others in an expedition to Tierra del Fuego.

Universidad Nacional del Sur
Diciembre 21, 2011 - Natural Sc.


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Bacteria: They Favor Vegetal Growth and Control Diseases

Bacteria: They Favor Vegetal Growth and Control Diseases

They are bio-inoculating which, apart from contributing to the absorption of nutrients and protecting cultivations from pathogenic agents with substantial improvements, they develop resistance to diseases. The evaluation already permitted to generate an income of 16 percent in the performance of corn and, as it is forecasted, in the future it might reach the market with innovative technologies. It was also effective its application in other cultivations such as rice, tomato and blueberries.

Universidad de Buenos Aires
Diciembre 14, 2011 - Agricultural & Forest Sc.


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New Possibilities for Graphene, the Material of the Future

New Possibilities for Graphene, the Material of the Future

Researchers calculated the electric answer of graphene, the thinnest material in the world, faced with the incidence of an infra-red laser light. They concluded that the light beam interrupts the electric conductivity of the material, an effect which the scientific community has searched for for a long time. If this is proved, the discovery would have a great technological impact, as it would open new perspectives for optoelectronic devices, such as plasma screens.

Universidad Nacional de Córdoba
Diciembre 14, 2011 - Exact Sc.


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Bacteria: Raw Material of Biocombustibles

Bacteria: Raw Material of Biocombustibles

Some oleaginous bacteria autochthonous of the Patagonia have the capacity of transforming urban waste into oils to produce biodiesel. The biochemical phenomenon of this transformation is analyzed by a team of researchers from the School of Natural Sciences, which looks for new sources for generating biocombustibles and, particularly, the widening of the oil production scale through these bacteria.

Universidad Nacional de la Patagonia San Juan Bosco
August 22, 2011 - Pharmacy and Biochemistry


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Benefits of Chocolate to Prevent Heart Diseases

Benefits of Chocolate to Prevent Heart Diseases

For more than three thousand years chocolate has been attributed beneficial properties for the health and there are more and more evidences from science about its virtues. Substances present in this food act over the regulation of arterial pressure. Cocoa has a high content of polyphenols, called flavanols, which would improve the vascular function contributing to lessen the development of hypertension and decrease the risk of heart disease.

Universidad de Buenos Aires
August 08, 2011 - Pharmacy and Biochemistry


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Clean Energies: New Membranes to Obtain Hydrogen

Clean Energies: New Membranes to Obtain Hydrogen

Hydrogen is one of the great promises of clean energies, that is why researchers from the UNL optimize the process of its generation in pure state, necessary for the function of combustible cells. They also evaluate alternatives to obtain it from bioethanol, a renewable source. The research group achieved the development of membranes which could be successfully used at laboratory scale.

Universidad Nacional del Litoral
June 20, 2011 - Engineering


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The Effects of Climate Change in Mendoza

The Effects of Climate Change in Mendoza

Experts from Germany and Argentina work together with the objective of facing climate change and environmental protection. In Mendoza’s territory, the emission of toxic gasses and open dumps are some of the factors which increase contamination. To raise awareness in the population and make them participate, they carry out a Project which has children as its main addressee.

Universidad Nacional de Cuyo
June 06, 2011 - Natural Sc.


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Biogas Based on Canine Stool

Biogas Based on Canine Stool

Departing from the research project “Urban Contamination with dog’s stool”, there were developed tests to turn domestic animals stool into biogas. The use of a biodigestor permitted the specialists to carry out the trials which produced a considerable amount of the combustible. The results generate the possibility of expanding the tests, as the resource is abundant, free and besides, it reduces the contamination caused by the waste.

Universidad Nacional del Nordeste
April 25, 2011 - Exact Sc.


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Agroindustrial Waste for Composting

Agroindustrial Waste for Composting

Researchers from the School of Agricultural Sciences work on the composting of waste rich in carbon, result of agro-industries, such as sawmills and rice mills. In the Mesopotamia there are great quantities of this waste which are not usable, so they constitute an environmental problem. After measuring indicators of quality and maturity of composting, the specialists point to achieve a stabilized organic matter in order to use it in agriculture.

Universidad Nacional del Nordeste
January 24, 2011 - Agricultural & Forest Sc.


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The Effects of Climate Change in Vulnerable Populations

The Effects of Climate Change in Vulnerable Populations

Men as main responsible for climate change, its causes and consequences, the lack of means from the nations to adapt and a new ecologic production model are some of the topics dealt with in this interview to InfoUniversidades by Ana Carolina Herrero, coordinator of the Urban Ecology BS of the UNGS. “We cannot mitigate climate change when the message is to consume, consume and consume” states the specialist.

Universidad Nacional de General Sarmiento
August 09, 2010 - Natural Sc.


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La UNCuyo produce aceite para biodiesel con microalgas

La UNCuyo produce aceite para biodiesel con microalgas

Como las algas unicelulares se alimentan de dióxido de carbono y se reproducen en muy poco tiempo en un mismo ambiente, la producción de los aceites a partir de ellas conlleva diversos beneficios: no se provoca depredación de los suelos, como el caso de la soja, y al poder aprovecharse los gases de calderas y maquinarias para su alimento se reducen las emisiones contaminantes al efecto invernadero. El exitoso experimento sedujo a un inversor de Estados Unidos, que destinó 100 mil dólares para desarrollar el proceso de producción a gran escala.

Universidad Nacional de Cuyo
January 18, 2010 - Engineering


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Estudian zonas de incendio y su influencia en la vegetación

Estudian zonas de incendio y su influencia en la vegetación

Los bosques contribuyen decisivamente en la protección del ambiente, porque mantienen un equilibrio almacenando carbono a lo largo de su vida. Consecuencia del uso indiscriminado de la tierra con finalidad agropecuaria, el uso abusivo del fuego provoca el aumento de áreas de pastizales en detrimento de las áreas de bosques. Con el objetivo de detectar, caracterizar y prevenir este fenómeno, investigadores de la UNSE estudian mediante monitoreo satelital zonas de incendios y su relación con la vegetación nativa. El estudio ya está generando una base de datos fundamental para los organismos de control ambiental.

Universidad Nacional de Santiago del Estero
August 10, 2009 - Agricultural & Forest Sc.


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Conservación: estudian biodiversidad química en suelos

Conservación: estudian biodiversidad química en suelos

Investigadores de la UNSE evaluaron la relación de las propiedades biológicas del suelo y analizaron nuevas alternativas de producción sostenible para su conservación. Realizaron un relevamiento de la biodiversidad de rizobios, bacterias que poseen la propiedad de fijar nitrógeno atmosférico de la tierra y evaluaron el coriandro, cultivo que protege el suelo y mejora su calidad. El motor de la investigación fue el resguardo de las especies leguminosas frente al avance desmesurado de los desmontes, y apunta al mejoramiento de la calidad biológica de los suelos y la diversidad microbiana.

Universidad Nacional de Santiago del Estero
July 27, 2009 - Agricultural & Forest Sc.


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Evalúan indicadores de sustentabilidad ecológica

Evalúan indicadores de sustentabilidad ecológica

La productividad y sostenibilidad de los sistemas agropecuarios dependen de la calidad del suelo. Investigadores de la UNSE realizaron análisis de las propiedades físicas, químicas y biológicas para obtener datos científicos y determinar si se producía alguna degradación o pérdida de calidad. El estudio se realizó en el Campo Experimental “La María”, perteneciente a la EEA INTA Santiago del Estero. También se tuvo en cuenta el manejo inadecuado de bosques y sabanas para fines ganaderos y forestales, que promueven el desarrollo de arbustales o 'fachinales'. El objetivo principal es la conservación del suelo.

Universidad Nacional de Santiago del Estero
July 06, 2009 - Agricultural & Forest Sc.


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Utilizan hongos en lugar de fertilizantes

Utilizan hongos en lugar de fertilizantes

Investigadores realizan estudios mediante los que se intenta aportar diversos minerales a plantas comerciales. Las experiencias fueron realizadas inicialmente en yerba, maní y en plantas medicinales, a través de la inoculación en la tierra de especies de hongos micorrícicos. El principal beneficio es que incrementan el área fisiológicamente activa en las raíces, aumentando notablemente la captación de agua y nutrientes como fósforo, potasio y calcio del suelo.

Universidad Nacional del Nordeste
June 29, 2009 - Agricultural & Forest Sc.


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Método seguro y económico para el crecimiento de lechones

Método seguro y económico para el crecimiento de lechones

Docentes y estudiantes de la UNVM investigan distintos aspectos relacionados con la industria porcina y experimentan un método eficaz y sustentable para acelerar el crecimiento de los cochinillos. En esta línea, trabajan empleando un compuesto inofensivo que aumentaría la concentración de la hormona de crecimiento y no provoca alteraciones en el producto final.

Universidad Nacional de Villa María
June 04, 2009 - Veterinary Sc.


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Ríos de humo en Sudamérica

Ríos de humo en Sudamérica

En el campo el fuego es una herramienta que se usa con distintos fines: se incendian pastizales para un mejor rebrote, o se quema la caña de azúcar para facilitar su cosecha, entre otros. Desde hace un tiempo las imágenes satelitales permitieron analizar las quemas en escalas regionales y se detectó que, con el viento norte, llegan a formarse “ríos de humo” que permanecen por varios días, recorriendo toda Sudamérica. Alrededor del 22% de las emisiones globales de dióxido de carbono, el principal gas de efecto invernadero, ocurren por causa de las quemas.

Universidad Nacional de San Martín
April 16, 2009 - Natural Sc.


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Mar y calentamiento global, un círculo vicioso

Mar y calentamiento global, un círculo vicioso

A partir de la interacción entre la radiación ultravioleta y los gases de efecto invernadero, investigadores estudian la modificación del papel regulador del mar sobre la cantidad de dióxido de carbono en la atmósfera. El trabajo de campo se realizó a lo largo de todo el Atlántico, desde el Ártico a la Antártida.

Universidad Nacional de General Sarmiento
December 04, 2008 - Exact Sc.


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