Según una investigación dirigida por el CSIC, la ausencia del gen Gadd45g provoca el desarrollo de ovarios en lugar de testículos en ratones macho. El hallazgo podría mejorar la comprensión de las anomalías de la diferenciación sexual. Fuente : http://www.agenciasinc.es/Noticias/El-sexo-es-feme...

Paula Jáuregui Onieva, investigadora de la Universidad Pública de Navarra, ha estudiado los factores de restricción de la inmunidad innata presentes en ovejas y cabras. En concreto, si estos factores tienen actividad antiviral para, después de realizar más trabajos y poder utilizarlos en la...

Un trabajo pionero liderado por investigadores españoles confirma que gracias a las células madre de placenta se pueden crear estructuras semejantes al órgano hepático. Además, un segundo estudio apunta que dichas células son capaces de ralentizar el crecimiento del tumor en el cáncer de mama....

Investigadores del Centro de Astrobiología y otros dos centros internacionales han desarrollado un nuevo método para estimar la dirección del impacto de objetos en los cráteres, como los de la Tierra o Marte. El estudio se ha publicado en la revista Meteoritics & Planetary Science.  Fuente :...

Un equipo internacional liderado por la Universidad de Granada ha determinado que las hembras de gorrión invierten energía en la puesta de huevos según la capacidad del macho para llenar el nido de plumas, que sirven para aislar a los pollos del frío y mantenerlos con vida. Fuente :...

Proba-V es un satélite en miniatura de la ESA que llevará a cabo una misión de gran envergadura: monitorizar cada dos días el crecimiento de la vegetación y los cambios en la cubierta del terreno en todo el planeta. Fuente : http://www.esa.int/ESA_in_your_country/Spain/Cifra...

A study in the Journal of General Physiology presents new methods to evaluate how astrocytes contribute to brain function, paving the way for future exploration of these important brain cells at unprecedented levels of detail. Fuente : http://www.eurekalert.org/pub_releases/2013-04/rup...

The Obama administration's controversial proposal to means-test Medicare recipients has one small problem -- the Medicare program is already means-tested, says law professor Richard L. Kaplan, a University of Illinois expert on retirement benefits. Fuente :...

Manufacturing using common components can actually reduce product line cannibalization, a finding that could allow firms to improve profits, says research by Dilip Chhajed and Yunchuan "Frank" Liu, professors of business administration at Illinois. Fuente :...

Ravi S. Gajendran, a professor of business administration at Illinois, says companies with employees located around the globe can mitigate their isolation by taking a relationship-based approach in the form of a "leader-member exchange." Fuente : http://www.eurekalert.org/pub_releases/2013-04/uoi...

Researchers at the University of Waterloo have found that children hear more complex language from parents when they read a storybook with only pictures compared to a picture-vocabulary book. The findings appear in the latest issue of the journal First Language. Fuente :...

A commonly used class of biologic response modifying drugs can cause acute liver injury with elevated liver enzymes, according to a new study in Clinical Gastroenterology and Hepatology. Fuente : http://www.eurekalert.org/pub_releases/2013-04/aga...

Predecessors to dinosaurs missed the race to fill habitats emptied when nine out of 10 species disappeared during Earth's largest mass extinction 252 million years ago. Fuente : http://www.eurekalert.org/pub_releases/2013-04/nsf...

People use an array of strategies to make sense of confusing statements. Fuente : http://www.eurekalert.org/pub_releases/2013-04/mio...

Rice University scientists find liquid crystalline silicone stiffens significantly when compressed repeatedly for hours on end. The discovery may lead to new strategies for self-healing materials or biocompatible materials that mimic human tissues. Fuente :...

In the spring following a forest fire, trees that survived the blaze explode in new growth and plants sprout in abundance from the scorched earth. For centuries, it was a mystery how seeds, some long dormant in the soil, knew to push through the ashes to regenerate the burned forest. Fuente :...

In a Georgia Tech study, more than half of healthcare providers interviewed said that if they were offered an assistant, they preferred it to be a robotic helper rather than a human. However, they don't want robots to help with everything. They were very particular about what they wanted a robot to...

Evidence has shown that green tea extract may be an effective herbal remedy useful for weight control and helping to regulate glucose in type 2 diabetes. In order to ascertain whether green tea truly has this potential, Jae-Hyung Park and his colleagues from the Keimyung University School of...

There is great opportunity for the United States to further reduce child occupant injury and death by focusing on rear seat safety design. Based on our review of data and available research, experts from the Children's hospital of Philadelphia's Center for Injury Research and prevention recommend...

20 years after the discovery of SWNTs, scientists from Aalto University in Finland, A.M. Prokhorov General Physics Institute RAS in Russia and the Center for Electron Nanoscopy of Technical University of Denmark have managed to control chirality in carbon nanotubes during their chemical vapor...

In a Kansas study, 50 years of inorganic fertilization increased soil organic carbon stocks but seemingly failed to enhance soil aggregate stability -- a key indicator of soil structural quality that helps dictate how water moves through soil and the soil's resistance to erosion. Fuente :...

Plastic surgery for better arms in women is surging. New statistics released by the American Society of Plastic Surgeons show that arm lifts in women have skyrocketed a staggering 4,378 percent in just over the last decade. It is a trend fueled, in part, by sleeveless fashions for women and more...

University of Washington engineers have found that using a grocery delivery service can cut carbon dioxide emissions by at least half when compared with individual household trips to the store. Trucks filled to capacity that deliver to customers clustered in neighborhoods produced the most savings...

Prototype mobile devices that can change shape on-demand could lay down the foundation for creating high shape resolution devices of the future. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/o...

Some residents living in areas in Bradford, Co, Pa., near natural gas operations, also known as hydraulic fracturing, are concerned their illnesses may be a result of nearby drilling operations. Twenty-two percent of the participants in a small pilot study surmise that hydrofracking may be the...

Injection of human stem cells into mice with tumors slowed down tumor growth, finds new research. Human mesenchymal stem cells, isolated from bone marrow, caused changes in blood vessels supplying the tumor, and it is this modification of blood supply which seems to impact tumor growth. Fuente :...

Being pregnant while young is known to protect a women against breast cancer. But why? New research finds that Wnt/Notch signalling ratio is decreased in the breast tissue of mice which have given birth, compared to virgin mice of the same age. Fuente :...

Having high thyroid activity, and even “high-normal” levels, is a significant risk factor for cardiovascular and all-cause mortality, according to new work. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...

Una empresa española de software desarrolla una herramienta informática que contribuirá a mejorar la seguridad de las estructuras de los edificios frente a un terremoto y que se podrá aplicar en los proyectos de construcción de países ubicados en zonas sísmicas.La entrada Llega el software...