الأحد، 24 يوليو 2016

ScienceDaily: Top News

ScienceDaily: Top News


E-cigarette nicotine labels not always accurate

Posted: 22 Jul 2016 06:25 PM PDT

A study found that 51 percent of labels on e-cigarette liquid nicotine containers from 16 North Dakota stores don't accurately reflect the levels of nicotine found in the products. In one instance, actual nicotine levels were 172 percent higher than labeled. The majority of e-cigarette liquid containers also did not provide child-resistant packaging.

Drug targeting BRAF mutation slows thyroid cancer, too

Posted: 22 Jul 2016 06:22 PM PDT

Researchers found that treating metastatic thyroid cancer patients harboring a BRAF mutation with the targeted therapy vemurafenib -- originally approved for melanoma patients with the mutation -- showed promising anti-tumor activity in a third of patients.

Behavioral activation as effective as CBT for depression, at lower cost

Posted: 22 Jul 2016 06:22 PM PDT

A simple and inexpensive therapy is equally as effective at treating depression as the 'gold standard' of cognitive behavioral therapy (CBT), a large-scale study has concluded.

Mice survive brain cancer tumors lacking key surface proteins

Posted: 22 Jul 2016 12:45 PM PDT

A new scientific study has characterized a checkpoint protein that allows certain brain tumor cells to avoid the immune system.

Similarities unite three distinct gene mutations of Treacher Collins syndrome

Posted: 22 Jul 2016 12:44 PM PDT

Scientists have reported a detailed description of how function-impairing mutations in polr1c and polr1d genes cause Treacher Collins syndrome (TCS), a rare congenital craniofacial development disorder that affects an estimated one in 50,000 live births.

Vaccine strategy induces antibodies that can target multiple influenza viruses

Posted: 22 Jul 2016 12:44 PM PDT

Scientists have identified three types of vaccine-induced antibodies that can neutralize diverse strains of influenza virus that infect humans. The discovery will help guide development of a universal influenza vaccine.

Plant compounds give '1-2' punch to colon cancer

Posted: 22 Jul 2016 12:44 PM PDT

A preliminary cell study finds combining curcumin, the active ingredient in spicy curry dishes, and silymarin, a component of milk thistle, inhibited the spread of colon cancer cells and increased cancer cell death.

Ultrasensitive sensor using N-doped graphene

Posted: 22 Jul 2016 12:44 PM PDT

A highly sensitive chemical sensor based on Raman spectroscopy and using nitrogen-doped graphene as a substrate was developed by an international team of researchers. In this case, doping refers to introducing nitrogen atoms into the carbon structure of graphene. This technique can detect trace amounts of molecules in a solution at very low concentrations, some 10,000 times more diluted than can be seen by the naked eye.

Parasite proteins prompt immune system to fight off ovarian tumors in mice

Posted: 22 Jul 2016 12:44 PM PDT

Scientists identified the specific proteins secreted by the parasite Toxoplasma gondii that cause the immune system in mice to attack established ovarian tumors.

How rope was made 40,000 years ago

Posted: 22 Jul 2016 06:34 AM PDT

Rope and twine are critical components in the technology of mobile hunters and gatherers. In exceptional cases impressions of string have been found in fired clay and on rare occasions string was depicted in the contexts of Ice Age art, but on the whole almost nothing is known about string, rope and textiles form the Paleolithic. Researchers have now discovered a tool used to make early rope.

For whom the births (and worms) toll

Posted: 22 Jul 2016 06:29 AM PDT

Studies of Bolivian forager-farmers shed light on costs of high birthrates, effects of pathogens on metabolism.

Physicists revisit spin-bowling puzzle: How cricket spin bowlers do it

Posted: 21 Jul 2016 06:09 PM PDT

Spin bowlers in cricket are masters at making the ball loop slowly through the air to confuse batsmen. Legends of the game know the magic combinations of top-spin, side-spin and off-spin necessary to fool the opposition, but some clever calculations by physicists in Australia could help to share this knowledge with a wider audience.

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