Nutrition Brazil  BRASIL 02/12/2015

Paleontologists describe giant amphibian that lived 260 million years ago

Brazilian group publishes detailed new analysis and description of 'Australerpeton cosgriffi', a giant relative of modern amphibians that lived 260 million years ago

A new analysis by a group of paleontologists offers a more detailed portrait of one of Brazil’s most interesting fossil species, Australerpeton cosgriffi, a giant relative of modern amphibians that lived during the Permian period 260 million years ago. Despite its link to today’s frogs and salamanders, A. cosgriffi was 2.5 m long and resembles a crocodile, with a long tapering snout and scaly body.

Australerpeton cosgriffi. Imagen: Rodolfo Nogueira/ Divulgación
842 words
1 Images
Nutrition Colombia  BOGOTÁ D.C. 01/12/2015

Bats help recover Colombian forests

An artificial shelter which attracts bats and helps direct seed rains as well as favoring reproduction is an alternative for improving and multiplying different deforested areas in Colombia

For four years and through a scientific tool based on the ecological role of frugivorous bats, researchers have been working on seed dispersion through guano, thus accelerating the ecological succession of ecosystems. According to Biological Sciences doctoral candidate and member of the Universidad Nacional de Colombia (UNal) Neotropical Mammal Evolution and Ecology Research Group Diego Casallas–Pabón, Colombia is second only to Indonesia in the amount of bat species in the world, with 200 species of bats.

Colombia es el segundo país del planeta más rico en murciélagos, con alrededor de 200 especies, después de Indonesia. FOTO: UN
689 words
1 Images
Nutrition Argentina  ARGENTINA 27/11/2015

Arsenic in water: an invisible foe

Two CONICET research teams study the remediation of an essential natural resource: water.

The Andes mountain range was formed 50 millions of years ago, as a result of the plate tectonic movements. This fact led to consequences that remain nowadays: during the process, great quantities of volcanic ash with high levels of (As) and fluoride. Currently, these materials are part of the loess or sediments of groundwater aquifer. The arsenic is the main natural pollutant of the groundwater, which is the only source for human consumption in a large area of our country. This problem, which produces a marked effect on the social health and economic sectors of the affected regions, involves more than eight millions of people.

Investigadores argentinos desarrollan sistemas para la remoción de arsénico en el agua subterránea. FOTO: CONICET
1.632 words
1 Images
Nutrition Brazil  BRASIL 26/11/2015

Elephants in Cerrado could play role once performed by mastodons

Reintroduction of large mammals into ecosystems could be an effective conservation strategy

Which of Earth’s continents has the most large animals? Africa, of course, but it has not always been so. Once upon a time, all continents were inhabited by large mammals weighing more than a ton, which biologists classify as megafauna. These mammals played a key role in the environment, spreading seeds from the flora of every ecosystem of which they were a part, as well as eating the vegetation and recycling nutrients through their droppings.

Elefante. foto: Bernard Dupond

 

973 words
1 Images
Social Sciences Chile  ATACAMA 25/11/2015

Cool, dim dwarf star is magnetic powerhouse

The team used ALMA to study the well-known red dwarf star TVLM 513-46546, which is located about 35 light-years from Earth in the constellation Boötes

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered that a dim, cool dwarf star is generating a surprisingly powerful magnetic field, one that rivals the most intense magnetic regions of our own Sun.

Representación artística de la estrella TVLM 513-46546.  Créditos: NRAO/AUI/NSF; Dana Berry / SkyWorks
628 words
1 Images
1 Audio clips
Nutrition Colombia  BOGOTÁ D.C. 20/11/2015

Fiber optic laser which improves industrial applications patented

With this light source they can etch or cut thick or robust surfaces. It is also useful in metal forming projects and in molds to perform texturized designs

This technological development had the support of the Universidad Nacional de Colombia (UNal) Deputy Rector's Office of Research and the Superintendence of Industry and Commerce who granted the patent. The device was carried out by UNal M.Sc. in Physics and Physics Engineer Jesús David Causado, along with UNal-Medellín School of Physics Professor and Founder and Director of the Photonics and Optoelectronics Research Group Pedro Ignacio Torres Trujillo.

La luz láser que dio lugar a esta patente ya no usa espejos sino fibra óptica. FOTO: UN
394 words
1 Images
Health Brazil  BRASIL 18/11/2015

Target gene identified for therapies to combat muscular dystrophy

Study published in Cell by researchers from Brazil and the United States suggests inducing overexpression of the Jagged1 gene can prevent the development of degenerative disease

Researchers at the University of São Paulo’s Bioscience Institute (IB-USP) in Brazil have shown that a gene called Jagged1, or JAG1 for short, could be a target for the development of new approaches to treat Duchenne muscular dystrophy (DMD), a genetic disorder characterized by progressive muscle degeneration.

Al inducir la sobreexpresión del gen Jagged1 se puede evitar el desarrollo de esta enfermedad degenerativa (imagen: Cell).
918 words
1 Images
Technology Spain  MADRID 17/11/2015

New Advanced Computing Systems

Scientists at Universidad Carlos III de Madrid (UC3M) are studying how to improve the development of advanced computing systems to create faster software

Scientists at Universidad Carlos III de Madrid (UC3M) are studying how to improve the development of advanced computing systems to create faster software under the auspices of RePhrase, a new research project from the European Union Horizon 2020 program. These new techniques will make it possible to improve applications such as industrial manufacturing processes and railway traffic monitoring, as well as the diagnosis of mental illnesses.

Imagen de cerebro generada a partir de resonancia magnética. Imagen: UC3M.
493 words
1 Images
1 Audio clips
Nutrition Colombia  BOGOTÁ D.C. 13/11/2015

The Orinoco crocodile returns to its natural habitat thanks to UNal

Four extinction critically endangered Crocodylus intermedius crocodiles were set free at the Sierra de La Macarena by a group of Universidad Nacional de Colombia (UNal) experts

“Federico”, “Cristina”, “John” and “Miriam” were the names given to these crocs which with a little apprehension now call the Guayabero and Lozada River banks home. After two years of being at the UNal Roberto Franco Tropical Biological Station conservation program in Villavicencio, they grew to almost two meters long (6.5 ft.) and 150 kilos.

Cocodrilo de la especia Crocodylus intermedius. FOTO: UN
586 words
1 Images
Nutrition Chile  ATACAMA 12/11/2015

ALMA links with other observatories to create earth-size telescope

The addition of ALMA to millimeter VLBI will boost the imaging sensitivity and capabilities of the existing VLBI arrays by an order of magnitude

The Atacama Large Millimeter/submillimeter Array (ALMA) continues to expand its power and capabilities by linking with other millimeter-wavelength telescopes in Europe and North American in a series of very long baseline interferometry (VLBI) observations.

ALMA combinó su poder con los radiotelescopios IRAM y VLBA en observaciones VLBI separadas. Crédito: A. Angelich (NRAO/AUI/NSF)
435 words
1 Images
Nutrition Brazil  BRASIL 11/11/2015

Research paves the way for a new treatment against schizophrenia

Malfunctioning of oligodendrocytes, specialized brain cells that provide important support for neuronal activity, may have a key role in the development of schizophrenia

A number of studies conducted at the University of Campinas’s Biology Institute (IB-UNICAMP) in São Paulo State, Brazil, have indicated that oligodendrocyte dysfunction may have a key role in the development of schizophrenia. Oligodendrocytes are specialized brain cells that provide important support for neuronal activity.

Imagen de microscopía confocal de un oligodendrocito/ Daniel Martins-de-Souza y Annette Vogl.
861 words
1 Images
Health Colombia  VALLE DEL CAUCA 09/11/2015

Ornamental fish to be genetically studied due to overexploitation

By performing molecular identification of Otocinclus spp., a species that thrives in the Orinoquía and Amazonian regions of Colombia, a Universidad Nacional de Colombia (UNal) researcher hopes to formulate preservation strategies

Marketing this and other species of ornamental fish could be an extinction threat which has not been determined yet in Colombia. For example Otocinclus species diversity has turned into an obstacle to establish the dimension of fish netting in Colombia.

Las principales especies ornamentales de exportación son los cardenales, otocinclo, corydora meta, arawanas, raya motoro y guacamaya, cuchas y el escalar altum.
415 words
1 Images
Social Sciences Chile  ATACAMA 06/11/2015

Astronomers discover growth spurts in a young protostar

A paper describing these results is published in the journal 'Nature'

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered an adolescent protostar that is undergoing a rapid-fire succession of growth spurts. Evidence for this fitful youth is seen in a pair of intermittent jets streaming away from the star’s poles. A paper describing these results is published in the journal Nature.

Astrónomos obtuvieron con ALMA la imagen del crecimiento intermitente de una joven protoestrella conocida como CARMA-7. Crédito: B. Saxton (NRAO/AUI/NSF); A. Plunkett et al.; ALMA (NRAO/ESO/NAOJ)
522 words
1 Images
Health Brazil  BRASIL 05/11/2015

Melatonin reduces metastasis in animals with breast cancer

The results of the studies, which were supported by FAPESP, have recently been described in a paper published in the 'Journal of Pineal Research'

When researchers at the São José do Rio Preto School of Medicine (FAMERP) in São Paulo State, Brazil, treated in vitro cultured metastatic breast cancer cells with melatonin, they observed a 55% reduction in cell migration and invasion. Experiments with mice showed that the treatment was also capable of slowing the progression of the disease in vivo.

Célula de cáncer de mama fotografiada con un microscopio electrónico de barrido.
891 words
2 Images
Nutrition Argentina  ARGENTINA 04/11/2015

Bacteriophages, the invisible enemies of the dairy industry

A research team at the CONICET develops technological strategies to minimize its effects

The word bacteria tends to be put on the same level as infections or diseases, but not all bacteria are bad. Within the beneficial ones to the human being, it is possible to find the lactic acid bacterium (LAB). These are a group of benign microorganisms that produce lactic acid from sugar fermentation. For this reason, they have been used for more than four thousands years in the production of fermented milk products, like yogurt and cheese, among others.

Células de Lactobacillus paracasei infectadas por un hongo. FOTO: CONICET
1.387 words
1 Images
Nutrition Panama  PANAMÁ 03/11/2015

Flatworms flout global biodiversity patterns

Generations of scientists have tried to explain why biodiversity decreases from the tropics to the poles—a pattern known as the latitudinal diversity gradient

The odds of being attacked and castrated by a variety of parasitic flatworms increases for marine horn snails the further they’re found from the tropics. A Smithsonian-led research team discovered this exception to an otherwise globally-observed pattern—usually biodiversity is greatest in the tropics and decreases toward the poles. The study, published in Ecology, makes a case for using host-parasite relationships as a tool to understand why there are typically more species—and more interactions between species—in the tropics than anywhere else in the world.

Variedad de platelmintos parásitos. FOTO: STRI
698 words
1 Images
Nutrition Colombia  CALDAS 30/10/2015

With fungi, vanilla sprouts faster

In a first successful report seed sprouting times of two species of vanilla orchids were reduced from several months to less than 60 days

Ceratobasidium and Tulasnella fungi helped quicken symbiotic sprouting of Colombian vanilla species Vanilla rivasii and V. calyculata, in comparison to in vitro traditional methods which use asymbiotic culture media (without fungi) and which are also more expensive.

Fotografía de microscopía electrónica del barrido de semilla de Vanilla rivasii. FOTO: UN
373 words
2 Images
Technology Argentina  ARGENTINA 28/10/2015

Scientists at the CONICET developed the first programmable digital hearing-aid of Argentina

It is made in Argentina and can be reprogrammed according to user’s needs

A group of CONICET researchers at the Laboratorio de Comunicaciones de la Facultad de Ingeniería de Mar del Plata [Communications Laboratory of the Faculty of Engineering of Mar del Plata] developed the first programmable digital hearing-aid that allows people with hearing disabilities to improve their quality of life.

Prototype of the hearing-aid. Photo: CCT Mar del Plata
752 words
1 Images
Technology Spain  MADRID 27/10/2015

UC3M researches simulator of human behavior

Universidad Carlos III de Madrid is investigating how to build a system that recreates human behavior

Universidad Carlos III de Madrid is investigating how to build a system that recreates human behavior. This technology could be applied to anticipate behavior in socioeconomic crises, create more human-like robots or develop avatars of artificial intelligence which are almost indistinguishable from those that represent people.

Red de personas. Imagen: UC3M.
579 words
1 Images
1 Audio clips
Technology Brazil  BRASIL 27/10/2015

Nanoparticles could be a basis for more sensitive radiation detectors

Structures produced by researchers at University of São Paulo and Harvard show potential to enhance efficiency of systems that require highly sensitive detection of light or radiation

Images captured from an electron microscope apparently show a huge number of tiny stars each with a diameter of only a few micrometers (millionths of a meter). The structures, produced by Eder Guidelli and Oswaldo Baffa at the Ribeirão Preto campus of the University of São Paulo (USP) in Brazil, in partnership with David R. Clarke of Harvard University in the United States, have a core of gold and silver particles surrounded by a “shell” of zinc oxide (ZnO). Their properties have the potential to improve the efficiencies of various systems in which it is necessary to detect light or radiation with a high degree of sensitivity.

Nanopartículas. FOTO: FAPESP
759 words
1 Images