ScienceDaily: Engineering and Construction News

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• Clues to role of magnetism in iron-based superconductors uncovered
• First direct evidence of 'spin symmetry' in atoms
• Novel recycling methods: Fluorescent fingerprint of plastics
• 3-D printers used to create custom medical implants that deliver drugs, chemo
• Models to study polyelectrolytes developed, including DNA and RNA
• Testing the shelf-life of nuclear reactors
• Future Phones to Use Blood, Speech to Monitor HIV, Stress, Nutrition
• Magnesium surgical implants can be designed to biodegrade, promote bone growth
• Promising ferroelectric materials suffer from unexpected electric polarizations

Clues to role of magnetism in iron-based superconductors uncovered Posted: 21 Aug 2014 12:38 PM PDT New measurements of atomic-scale magnetic behavior in iron-based superconductors are challenging conventional wisdom about superconductivity and magnetism.

First direct evidence of 'spin symmetry' in atoms Posted: 21 Aug 2014 11:14 AM PDT Physicists have observed the first direct evidence of symmetry in the magnetic properties -- or nuclear 'spins' -- of atoms. The advance could spin off practical benefits such as the ability to simulate and better understand exotic materials such as superconductors.

Novel recycling methods: Fluorescent fingerprint of plastics Posted: 21 Aug 2014 11:13 AM PDT A new process has been developed that will greatly simplify the process of sorting plastics in recycling plants. The method enables automated identification of polymers, facilitating rapid separation of plastics for re-use.

3-D printers used to create custom medical implants that deliver drugs, chemo Posted: 21 Aug 2014 06:06 AM PDT An innovative method for using affordable, consumer-grade 3D printers and materials has been developed to fabricate custom medical implants that can contain antibacterial and chemotherapeutic compounds for targeted drug delivery. "It is truly novel and a worldwide first to be 3D printing custom devices with antibiotics and chemotherapeutics," said one researcher.

Models to study polyelectrolytes developed, including DNA and RNA Posted: 21 Aug 2014 06:06 AM PDT A novel and versatile modeling strategy has been developed to simulate polyelectrolyte systems. The model has applications for creating new materials as well as for studying polyelectrolytes, including DNA and RNA. Polyelectrolytes are chains of molecules that are positively or negatively charged when placed in water. Because they are sensitive to changes in their environment, polyelectrolytes hold promise for use in applications such as drug delivery mechanisms.

Testing the shelf-life of nuclear reactors Posted: 20 Aug 2014 06:16 AM PDT Researchers have devised a quick way to test the structural materials used to build nuclear reactors.

Future Phones to Use Blood, Speech to Monitor HIV, Stress, Nutrition Posted: 19 Aug 2014 09:59 AM PDT A new program aims to deploy three phone devices that can have an immediate impact on personal healthcare: a Stress-Phone for long term stress management, a Nutri-Phone for nutritional awareness and a Hema-Phone for monitoring viral loading in HIV positive patients.

Magnesium surgical implants can be designed to biodegrade, promote bone growth Posted: 19 Aug 2014 08:28 AM PDT Ask anyone who has a surgical pin in their body, and they likely will tell you they wish it would just go away. In the future, it just might: researchers have developed a surgical pin made from magnesium that has the potential to degrade in the body. In laboratory tests, the pin offers several advantages over the plastic and stainless steel or titanium pins currently used.

Promising ferroelectric materials suffer from unexpected electric polarizations Posted: 18 Aug 2014 06:46 AM PDT Scientists discover surprising head-to-head charge polarizations that impede performance in next-gen materials that might revolutionize data-driven devices.

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