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Calcium Sulfate: A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.

Preclinical Model of Hind Limb Ischemia in Diabetic Rabbits

1Department of Biomedical Engineering, University of Texas at Austin, 2Division of Cardiology, University of Texas McGovern Medical School, 3Memorial Herman Heart and Vascular Center, Texas Medical Center, 4Institute for Cellular and Molecular Biology, University of Texas at Austin, 5The Institute for Computational Engineering and Sciences, University of Texas at Austin, 6Institute for Biomaterials, Drug Delivery and Regenerative Medicine, University of Texas at Austin

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JoVE 58964


 JoVE In-Press

Treatment with Vancomycin Loaded Calcium Sulphate and Autogenous Bone in an Improved Rabbit Model of Bone Infection

1Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, 2Department of Orthopaedic Surgery, Tongde Hospital of Zhejiang Province, 3Institute of Orthopaedics and Traumatology, First Affiliated Hospital of Zhejiang Chinese Medical University, 4Department of Clinical Laboratory, Tongde Hospital of Zhejiang Province

Video Coming Soon

JoVE 57294


 JoVE In-Press

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

1Skeletal Biotech Laboratory, Hebrew University-Hadassah Faculty of Dental Medicine, 2Department of Surgery, Cedars-Sinai Medical Center, 3Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, 4Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, 5Department of Orthopedics, Cedars-Sinai Medical Center

JoVE 55928


 Bioengineering

Slow-release Drug Delivery through Elvax 40W to the Rat Retina: Implications for the Treatment of Chronic Conditions

1Biotechnology and Applied Clinical Sciences Department, University of L'Aquila, 2ARC Centre of Excellence in Vision Science, 3John Curtin School of Medical Research, Australian National University, 4ANU Medical School, Australian National University

JoVE 51563


 Medicine

Soil Nutrient Analysis: Nitrogen, Phosphorus, and Potassium

JoVE 10077

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University

In this experiment, three soil macronutrients are chemically extracted, combined with color-based reagents, then analyzed using color to determine the nutrient concentration present in the soil sample.

Nitrogen, phosphorus, and potassium are the main components of soil fertilizer. These methods isolate each nutrient from the soil into a solution that can be analyzed using turbidity and color to determine the concentration of nutrients present in the soil sample. Knowing present concentration informs environmental scientists of a nutrient deficiency or surplus in soils used to support plant production, and also provides general insight into basic biogeochemical cycles of an ecosystem.


 Environmental Science

Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles

1Department of Bioengineering, University of Illinois at Urbana-Champaign, 2Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, 3Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, 4Program of Study and Control of Tropical Diseases (PECET), University of Antioquia, 5Sealy Center for Vaccine Development, University of Texas Medical Branch, 6WHO Collaborating Center for Vaccine Research, Evaluation and Training on Emerging Infectious Diseases, University of Texas Medical Branch, 7Beckman Institute, University of Illinois at Urbana-Champaign

JoVE 52951


 Bioengineering

Ceramic-matrix Composite Materials and Their Bending Properties

JoVE 10481

Source: Sina Shahbazmohamadi and Peiman Shahbeigi-Roodposhti, School of Engineering, University of Connecticut, Storrs, CT

Bones are composites, made of a ceramic matrix and polymer fiber reinforcements. The ceramic contributes compressive strength, and the polymer provides tensile and flexural strength. By combining ceramic and polymer materials in different amounts, the body can create unique materials tailored for a specific application. As biomedical engineers, having the ability to replace and replicate bone due to disease or traumatic injury is a vital facet of medical science. In this experiment we will create three different ceramic-matrix composites with plaster of Paris (which is a calcium sulfate compound), and allow them to undergo three-point bending test in order to determine which preparation is the strongest. The three composites are as follows: one comprised only of plaster of Paris, one with chopped glass shards mixed in a plaster matrix and lastly a plaster matrix with a fiberglass network embedded within it.


 Materials Engineering

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