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19:43 EDT 23rd September 2017 | BioPortfolio

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Showing News Articles 1–25 of 12,000+ from Physorg.COM

Friday 22nd September 2017

Dentistry study pinpoints role of proteins that produce pearls

Pearls are among nature's most beautiful creations, and have been treasured for countless centuries. Beneath one's iridescent surface lies a tough and resilient structure made of intricately arranged tiles of calcium carbonate organized by a crew of proteins that guide its formation and repair.

The hectic around-the-clock effort to save an endangered, orphaned bat

Early one Wednesday morning in January, in an exhibit at the San Diego Zoo Safari Park, a fruit bat named Patty went into labor.

Complete structure of mitochondrial respiratory supercomplex decoded

(—Piece by piece, the circuit diagram for electron transport in the mitochondria has come closer to completion. Each new structure obtained for any of the five respiratory complexes further constrains the assembled puzzle. Eventually, big blocks are arranged into their final placements. The exact composition of the biggest block, the so-called megacomplex, has long eluded researchers. N...

In defence of great crested newts—why these elusive amphibians are worth the worry

You have probably never seen a great crested newt. If you're in the UK, you'll usually only hear about them when construction work is halted because they are found at a building site. In the past month alone, relocating these protected animals has caused delays to new roads, a huge rail freight hub, a 1,400-home development and a football club's state-of-the-art £14m training complex. Even an ill...

Marine snails know how to budget their housing costs

For nearly 50 years, researchers have been stumped as to why sea shells from warm tropical waters are comparatively larger than their cold water relatives. New research, led by the ARC Centre of Excellence for Coral Reef Studies (Coral CoE) at James Cook University in Australia with researchers at British Antarctic Survey, suggests that it all comes down to 'housing cost.'

A new way to enhance the capacity of memory devices

A Tomsk Polytechnic University study reveals how topological vortices found in low-dimensional materials can be both displaced and erased and restored again by the electrical field within nanoparticles. This may open exciting opportunities for memory devices or quantum computers in which information will be encrypted in the characteristics of topological vortices.

New pollinator guidelines aim to get Ireland's farmland buzzing again

Researchers behind the All-Ireland Pollinator Plan (AIPP) this week unveiled new Farmland Guidelines to add another strand to a coordinated drive to help Ireland's pollinators survive and thrive. The guidelines were launched at the National Ploughing Championships by Minister of State at Department of Agriculture, Food and the Marine, Andrew Doyle TD.

Dams and other barriers to salmon spawning grounds create challenges for fisheries managers

Wild salmon, historically, are born in rivers, swim to sea to live out their adulthoods, and find their way back to their freshwater spawning grounds to reproduce before dying.

Re-introduction of native mammals helps restore arid landscapes

Small native mammals eat more plant seeds than had been realised, and their loss to predators such as foxes and feral cats has likely caused significant changes to vegetation in outback Australia.

Stressed-out meerkats less likely to help group

Dominant female meerkats use aggression to keep subordinates from breeding, but a new study finds this negative behavior also can result in the latter becoming less willing to help within the group.

The dentition of the wedgefish appears designed to crush shellfish, but it also eats stingrays

The diet of some animals is not what the shape of their teeth would have you think. That's the conclusion from a recent study on the jaw of a wedgefish by a team headed by Mason Dean, scientist at the Max Planck Institute of Colloids and Interfaces in Potsdam-Golm. Although these batoid fish, i.e. relatives of sharks and rays, have wide teeth and normally eat shellfish and shrimp, fragments of tai...

Honey: a cost-effective, non-toxic substitute for graphene manipulation

Dr. Richard Ordonez, a nanomaterials scientist at the Space and Naval Warfare Systems Center Pacific (SSC Pacific), was having stomach pains last year. So begins the story of the accidental discovery that honey—yes, the bee byproduct—is an effective, non-toxic substitute for the manipulation of the current and voltage characteristics of graphene.

Australian police hunt killer of giant crocodile

A manhunt has begun for the killer of a giant saltwater crocodile in Australia, as authorities warned its death would trigger more aggressive behaviour among younger crocs in the area.

Thursday 21st September 2017

Scientists study wildlife rangers, what motivates them?

Wildlife rangers are on the front lines protecting our most iconic species—tigers, elephants, gorillas and many others. But their challenges involve more than confrontations with wild animals and poachers.

Study provides insights into how algae siphon carbon dioxide from the air

Two new studies of green algae—the scourge of swimming pool owners and freshwater ponds—have revealed new insights into how these organisms siphon carbon dioxide from the air for use in photosynthesis, a key factor in their ability to grow so quickly. Understanding this process may someday help researchers improve the growth rate of crops such as wheat and rice.

Signs of sleep seen in jellyfish

Jellyfish snooze just like the rest of us. Like humans, mice, fish and flies, the upside-down jellyfish Cassiopea exhibits the telltale signs of sleep, scientists report September 21, 2017 in the journal Current Biology. But unlike other animals that slumber, jellyfish don't have a central nervous system.

Scientists sequence asexual tiny worm—whose lineage stretches back 18 million years

A team of scientists has sequenced, for the first time, a tiny worm that belongs to a group of exclusively asexual species that originated approximately 18 million years ago—making it one of the oldest living lineages of asexual animals known. The work reveals how it has escaped the evolutionary dead end usually met by organisms that do not engage in sex.

DNA discovery could help shed light on rare childhood disorder

New insights into how our cells store and manage DNA during cell division could help point towards the causes of a rare developmental condition.

Surprising discovery—how the African tsetse fly really drinks your blood

Researchers at the University of Bristol have been taking a close-up look at the biting mouthparts of the African tsetse fly as part of ongoing work on the animal diseases it carries.

Africa poaching now a war, task force warns

The fight against poaching must be treated as a war, Africa's leading anti-poaching coalition said Thursday, as it called for the illicit wildlife trade to be monitored like global conflicts.

Changing of the guard—research sheds light on how plants breathe

New research is set to change the textbook understanding of how plants breathe.

New findings on the biomechanics and evolution of suction traps in carnivorous bladderworts

Bladderworts (Utricularia spp. Lentibulariaceae) are plants with many superlatives: They belong to the most recently evolved and also the largest genus of carnivorous flowering plants, encompassing more than 240 species. They have one of the smallest genomes known in flowering plants, have the fastest traps, are completely rootless, are distributed almost worldwide, and possess a great variety of ...

Cnidarians remotely control bacteria

In modern life sciences, a paradigm shift is becoming increasingly evident: life forms are no longer considered to be self-contained units, but instead highly-complex and functionally-interdependent communities of organisms. The exploration of the close links between multi-cellular and especially bacterial life will, in future, be the key to a better understanding of life processes as a whole, and...

The birdlife of an unforgiving paradise

When ECU wildlife ecologist Dr Rob Davis describes surveying birdlife on the island of New Britain as the hardest field work he's ever done, he's not exaggerating.

Review of historic stock routes may put rare stretches of native plants and animals at risk

Since the 19th century, Australian drovers have moved their livestock along networks of stock routes. Often following traditional Indigenous pathways, these corridors and stepping-stones of remnant vegetation cross the heavily cleared wheat and sheep belt in central New South Wales.

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