Ultimi Articoli

I ragni granchio, inaspettate sentinelle della biodiversità

I ragni granchio, inaspettate sentinelle della biodiversità

26 Settembre 2022

La sperimentazione condotta al Centro di Ricerche Agro-Ambientali “Enrico Avanzi"...

Scoperta una molecola intestinale che aumenta il rischio di infarto e ictus: lo rivela una ricerca della Sapienza

Scoperta una molecola intestinale che aumenta il rischio di infarto e ictus: lo rivela una ricerca della Sapienza

26 Settembre 2022

Lo studio tutto italiano, pubblicato su Nature Reviews Cardiology, mette...

FUTURISMO - La nascita dell’avanguardia 1910-1915

FUTURISMO - La nascita dell’avanguardia 1910-1915

22 Settembre 2022

01 ottobre 2022 – 26 febbraio 2023Palazzo Zabarella, Padova Così...

Distrofia retinica ereditaria: due fratellini recuperano la vista grazie alla terapia genica

Distrofia retinica ereditaria: due fratellini recuperano la vista grazie alla terapia genica

22 Settembre 2022

Nasce dalla collaborazione tra Policlinico Gemelli e Ospedale Pediatrico Bambino...

L’8 E IL 9 OTTOBRE TORNA URBAN NATURE

L’8 E IL 9 OTTOBRE TORNA URBAN NATURE

21 Settembre 2022

“LA NATURA SI FA CURA”: NELLE PIAZZE ITALIANE REGALATI UNA...

How the brain develops: a new way to shed light on cognition

How the brain develops: a new way to shed light on cognition

21 Settembre 2022

Researchers introduce a new neurocomputational model of the human brain...

A new study reveals the earliest evidence of opium use in the Land of Israel

A new study reveals the earliest evidence of opium use in the Land of Israel

21 Settembre 2022

A joint study by the Israel Antiquities Authority, Tel Aviv...

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

Medicina

Scoperta una molecola intestinale che aumenta il rischio di infarto e ictus: lo rivela una ricerca della Sapienza

Scoperta una molecola intestinale che aumenta il rischio di infarto e ictus: lo rivela una ricerca della Sapienza

26 Settembre 2022

Lo studio tutto italiano, pubblicato su Nature Reviews Cardiology, mette...

Paleontologia

Homo sapiens: un nuovo studio riconduce l’origine della specie a una popolazione isolata dell’Africa orientale di circa 200.000 anni fa

Homo sapiens: un nuovo studio riconduce l’origine della specie a una popolazione isolata dell’Africa orientale di circa 200.000 anni fa

21 Settembre 2022

Un recente articolo, pubblicato sulla rivista Evolutionary Anthropology, a firma di docenti dalla Sapienza...

Geografia e Storia

Mortalità da ondate di calore nel Mediterraneo

Mortalità da ondate di calore nel Mediterraneo

10 Agosto 2022

Una ricerca pubblicata sulla rivista Global Change Biology coordinata da Institut de Ciències del...

Astronomia e Spazio

Giove: pianeta in costante movimento

Giove: pianeta in costante movimento

01 Settembre 2022

Le misure di gravità effettuate dalla sonda Juno della Nasa hanno...

Scienze Naturali e Ambiente

 

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

Photo Gallery