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Q&A: Solid Silk - A Biocompatible, Sustainable, Degradable Building Block

  • Magazine Article
  • TBMG-36175
Published 2020-03-01 by Tech Briefs Media Group in United States

David Kaplan, Stern Family Professor of Engineering at Tufts University’s College of Engineering, and his team have developed a unique and practical method for processing silk into solid form for products such as rods and plates for medical implants.

Precision 3D Bioprinter

  • Magazine Article
  • TBMG-36057
Published 2020-02-01 by Tech Briefs Media Group in United States

nScrypt Inc. Orlando, FL 407-275-4720

Implants: Protective Membrane Reduces Tissue Buildup

  • Magazine Article
  • TBMG-35775
Published 2020-01-01 by Tech Briefs Media Group in United States

Scientists have developed a special protective membrane made of cellulose that significantly reduces the buildup of fibrotic tissue around cardiac pacemaker implants, as reported in a recent issue of the journal Biomaterials.1 The protective membrane could greatly simplify surgical procedures for patients with cardiac pacemakers.

Bioresorbable Patch Offers New Alternative for Arterial Healing

  • Magazine Article
  • TBMG-35632
Published 2019-12-01 by Tech Briefs Media Group in United States

When a patient experiences 70 percent or greater stenosis in the carotid artery — a condition that can cause lack of cerebral blood flow, stroke, and in some cases, death — surgeons perform a procedure known as carotid endarterectomy (CEA) to remove the plaque causing the artery stenosis.1,2 The procedure consists of a longitudinal incision made from the common to the internal carotid artery, allowing for removal of the plaque that deposits in the bifurcation.

New 3D Printing Technique for Biomaterials

  • Magazine Article
  • TBMG-35626
Published 2019-12-01 by Tech Briefs Media Group in United States

A new technique could be used to print soft biomaterials that could be used to repair defects in the body. The method offers an alternative to existing techniques that use gels that have been minced to form a slurry bath into which the printed material is injected. Called Freeform Reversible Embedding of Suspended Hydrogels (FRESH), these materials offer many advantages, but friction within the gel medium can distort the printing.

Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic Frameworks

  • Magazine Article
  • TBMG-34534
Published 2019-06-01 by Tech Briefs Media Group in United States

Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique that is widely applied in the characterization of large biomolecules using various mass spectrometry (MS) analyzers, specifically, time-of-flight (TOF) analyzers. The MALDI process involves the deposition of an analyte solution onto a metal substrate before the addition of a matrix. The matrix/analyte dry spot is exposed to a UV laser, and the laser energy that is absorbed by the matrix/analyte is converted into heat energy that initiates charge transfer, which results in the desorption of the matrix and analyte molecules in ionized form. The positive ions are then accelerated through a vacuum into MS analyses.

Composite Advances Lignin as Renewable 3D Printing Material

  • Magazine Article
  • TBMG-33935
Published 2019-03-01 by Tech Briefs Media Group in United States

Lignin is the material left over from the processing of biomass. It gives plants rigidity and also makes biomass resistant to being broken down into useful products. Researchers combined a melt-stable hardwood lignin with conventional plastic, a low-melting nylon, and carbon fiber to create a composite with just the right characteristics for extrusion and weld strength between layers during the printing process, as well as excellent mechanical properties.

Large-Volume Extruder for 3D Printers

  • Magazine Article
  • TBMG-33595
Published 2019-01-01 by Tech Briefs Media Group in United States

A low-cost 3D bioprinter was built by modifying a standard desktop 3D printer with a syringe-based, large volume extruder (LVE). The extruder works with most open-source fused deposition modeling (FDM) printers.

3D Printer Creates Complex Biological Tissues

  • Magazine Article
  • TBMG-33597
Published 2019-01-01 by Tech Briefs Media Group in United States

A technique was developed that uses a specially adapted 3D printer to build therapeutic biomaterials from multiple materials. The advance could be a step toward on-demand printing of complex artificial tissues for use in transplants and other surgeries.

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Engine oil from Christmas trees and flashlight batteries

Automotive Engineering: July/August 2019

Stuart Birch
  • Magazine Article
  • 19AUTP08_15
Published 2019-01-01 by SAE International in United States

What is the connection between a Christmas tree, chewing gum, used fry oil and 14 flashlight batteries? Answer: Together with some other commonly used items, this incongruous recipe can be turned into a liter of automotive-quality engine oil-not formally analyzed for a specification but approximating to an SAE 0W20 by Nexcel, a BP innovation business.

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