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Un paradosso conservazionistico: le specie aliene invasive possono essere a rischio nei loro areali d'origine

Un paradosso conservazionistico: le specie aliene invasive possono essere a rischio nei loro areali d'origine

09 Dicembre 2024

Le specie non autoctone rappresentano una minaccia per la biodiversità,...

Tumore della vescica: "Scoperto un nuovo meccanismo molecolare"

Tumore della vescica: "Scoperto un nuovo meccanismo molecolare"

06 Dicembre 2024

LA PROTEINA NUMB È L’INTERRUTTORE PER LA DIAGNOSI DELLE FORME...

Il vetro irraggiato con raggi X  diventa più resistente

Il vetro irraggiato con raggi X diventa più resistente

05 Dicembre 2024

Team di ricerca internazionale guidato da Padova osserva per la...

La crisi climatica minaccia la presenza umana nei delta fluviali

La crisi climatica minaccia la presenza umana nei delta fluviali

05 Dicembre 2024

Sta già accadendo nel Mississippi e ci sono segnali preoccupanti...

A tempo di Pulsar con Meerkat: una nuova mappa dell'universo nelle onde gravitazionali

A tempo di Pulsar con Meerkat: una nuova mappa dell'universo nelle onde gravitazionali

05 Dicembre 2024

Grazie a quasi 5 anni di osservazioni con il radiotelescopio...

Groenlandia, i ghiacciai montani stanno fondendo

Groenlandia, i ghiacciai montani stanno fondendo

03 Dicembre 2024

Condotta dal Cnr-Isp, in collaborazione con l’Università Ca’ Foscari Venezia,...

Nuovo strumento molecolare per capire come funzionano le nostre cellule

Nuovo strumento molecolare per capire come funzionano le nostre cellule

02 Dicembre 2024

Un team del Cnr-In e dell’Università di Padova ha messo...

Dagli ulivi la salute: l'oleuropeina stimola i mitocondri e combatte l'invecchiamento muscolare

Dagli ulivi la salute: l'oleuropeina stimola i mitocondri e combatte l'invecchiamento muscolare

29 Novembre 2024

Team di ricercatori internazionale guidato dall’Università di Padova ha dimostrato...

Venerdì, 31 Marzo 2017

Land snails are generally believed to be ground-dwelling creatures, preferring dark and humid places, like the forest floor, or a suburban garden. So why do we find some species of snails in the tops of trees, where it is relatively light and dry? Associate Professor Ikuyo Saeki from the University of Tsukuba, Japan and her colleagues from Hokkaido University and other institutions, have performed some fascinating research to find out why. Prof. Saeki wanted to know what drives animals to leave the ground, defying gravity to live in the tree tops. Is it because there are fewer predators, or less competition with other animals? Is there more, or better, food? Some studies suggest that tree-dwelling species live longer than ground dwellers, but this idea, along with the others, is not easy to test in a natural environment. That’s when Prof. Saeki and her colleagues decided to enlist the help of a Japanese tree-climbing land snail.

Pubblicato in Scienceonline

Bleached Acropora colony photographed in July 2015. A new study finds that a 2°C rise in the sea surface temperature of the South China Sea in June 2015 was amplified to produce a 6°C rise on the Dongsha Atoll, killing approximately 40 percent of the resident coral community. (Photo by Thomas DeCarlo, Woods Hole Oceanographic Institution)

In the South China Sea, a 2°C rise in the sea surface temperature in June 2015 was amplified to produce a 6°C rise on Dongsha Atoll, a shallow coral reef ecosystem, killing approximately 40 percent of the resident coral community according to a study published in Scientific Reports this week. Wind and waves churn the sea, flushing shallow-water coral reefs with seawater from the open ocean to help them stay cool. But according to new research from the Woods Hole Oceanographic Institution (WHOI), when the weather turns still and these natural cooling mechanisms subside, just a few degrees of ocean warming can prove lethal to the corals that live there.

Pubblicato in Scienceonline

 

Increasing the woody biomass supply sustainably, continuously and at acceptable prices is a huge challenge . It’s not always easy to see the wood from trees when dealing with complex challenges in energy policy. However, Europe is increasingly finding in its forests a significant source of renewable energy that could help the region move away from fossil fuel dependency. Known collectively as woody biomass, these by-products of forest management are also useful raw materials to be crafted into wood products, turned into energy or converted into mulch and erosion control materials.

Pubblicato in Scienceonline

 

During replication, the two strands are separated. Each strand of the original DNA molecule then serves as a template for the production of its complementary counterpart (Figure: Wikimedia Commons).

 

Analyzing DNA is useful for a number of vital applications. This includes diagnosis and monitoring of diseases, identification of criminals, and studying the function of a targeted segment of DNA. However, methods used for analyses often require more DNA than may be available in a typical sample. ‘Therefore, amplification is necessary, but not always straightforward. The most widely used amplification or photocopying method is the polymerase chain reaction (PCR). A new PCR method could help the amplification process, and thus develop robust assays that previously would not have been possible. Deoxyribonucleic acid (DNA) is a molecule found in the nucleus of cells and carries the 'instructions' for the development and functioning of living organisms. It is often compared to a set of blueprints since it contains the instructions needed to build cells. These instructions are divided into segments along a strand of DNA.

Pubblicato in Scienceonline

 

Scienzaonline con sottotitolo Sciencenew  - Periodico
Autorizzazioni del Tribunale di Roma – diffusioni:
telematica quotidiana 229/2006 del 08/06/2006
mensile per mezzo stampa 293/2003 del 07/07/2003
Scienceonline, Autorizzazione del Tribunale di Roma 228/2006 del 29/05/06
Pubblicato a Roma – Via A. De Viti de Marco, 50 – Direttore Responsabile Guido Donati

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