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Related Concept Videos

Design Consideration01:22

Design Consideration

575
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
575
Tensile Strength Considerations of Concrete01:16

Tensile Strength Considerations of Concrete

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Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
549
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

630
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
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Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
962
Energy Considerations in Open Channel Flow01:27

Energy Considerations in Open Channel Flow

598
Open channel flow, where a fluid flows with a free surface exposed to the atmosphere, is primarily governed by gravitational and surface effects, distinguishing it from closed conduit or pipe flow. In open channels such as rivers, canals, and artificial channels, energy analysis provides valuable insights into flow behavior and the relationship between depth, velocity, and slope.Specific Energy and Flow DepthIn open channel flow, the specific energy, E, combines the gravitational potential...
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One-Compartment Open Model for IV Bolus Administration: General Considerations01:19

One-Compartment Open Model for IV Bolus Administration: General Considerations

726
The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant,...
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Related Experiment Video

Updated: Jan 31, 2026

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
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3D printing with silk: considerations and applications.

Megan K DeBari1, Mia N Keyser2, Michelle A Bai2

  • 1Material Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA.

Connective Tissue Research
|December 19, 2018
PubMed
Summary
This summary is machine-generated.

3D printing enables intricate silk constructs for biomedical uses. Silk bioinks improve printing properties for fabricating medical devices and tissues.

Keywords:
3D printingbioinkbioprintingprinting parameterssilktissue engineering

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Area of Science:

  • Biomaterials Science
  • Polymer Science
  • Biomedical Engineering

Background:

  • Silk, a natural polymer from spiders and silkworms, is valued for biocompatibility and biodegradability.
  • Traditional silk processing yields constructs of limited complexity.
  • 3D printing offers advanced fabrication of complex silk-based structures.

Purpose of the Study:

  • To review recent advancements in 3D printing of silk.
  • To highlight key printing parameters for silk fabrication.
  • To explore the integration of silk into bioinks for enhanced properties.

Main Methods:

  • Review of current literature on 3D printing techniques for silk.
  • Analysis of extrusion and inkjet printing methods for silk constructs.
  • Investigation of silk's role in composite bioinks with natural and synthetic polymers.

Main Results:

  • 3D printing allows for the creation of complex silk scaffolds, films, and nanoparticles.
  • Silk incorporation into bioinks enhances viscosity and mechanical properties for printing.
  • Silk-based bioinks have been successfully used in fabricating medical devices and tissues.

Conclusions:

  • 3D printing significantly expands the application potential of silk in biomedicine.
  • Silk's unique properties make it a valuable component in advanced bioinks.
  • Further research into printing parameters is crucial for optimizing silk-based biomedical applications.