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Related Concept Videos

Accelerators01:17

Accelerators

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Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...
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Microorganisms in Agriculture and Food industry01:27

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Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
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When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
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Instantaneous Acceleration01:16

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Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
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Acceleration Vectors01:30

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In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
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Average Acceleration01:30

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The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
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Related Experiment Video

Updated: Jan 24, 2026

Transcript and Metabolite Profiling for the Evaluation of Tobacco Tree and Poplar as Feedstock for the Bio-based Industry
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Process Engineering Accelerating an Economic Industrialization Towards a Bio-Based World.

Lukas Uhlenbrock1, Reinhard Ditz2, Jochen Strube3

  • 1Institute for Separation and Process Technology, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany. uhlenbrock@itv.tu-clausthal.de.

Molecules (Basel, Switzerland)
|May 17, 2019
PubMed
Summary
This summary is machine-generated.

Transitioning to a bio-based economy requires innovative biomass valorization strategies. Developing advanced separation techniques for plant metabolites is crucial for pharmaceutical applications and industrial feasibility.

Keywords:
bio-based worldbioeconomypurification strategiesresource-efficient productionsecondary metaboliteswaste valorization

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Area of Science:

  • Biotechnology and Bioengineering
  • Chemical Engineering
  • Sustainable Chemistry

Background:

  • The global shift towards a bio-based economy presents significant engineering challenges.
  • Current biomass utilization, primarily for biogas production, necessitates enhanced valorization strategies.
  • Secondary plant metabolites hold high value, particularly in the pharmaceutical industry.

Purpose of the Study:

  • To provide an engineering perspective on interdisciplinary approaches for a bio-based world.
  • To assess current biomass valorization methods and identify limitations.
  • To explore the potential of separation processes for high-value plant metabolites.

Main Methods:

  • Review of existing interdisciplinary projects and academic fields.
  • Economic assessment of current biomass-to-biogas utilization.
  • Case study on the purification of curcuminoids from Curcuma longa L. to demonstrate economic feasibility.

Main Results:

  • Increased interdisciplinary exchange can unlock benefits for a bio-based transition.
  • Existing biomass valorization strategies, like biogas production, show economic limitations.
  • Separation of secondary plant metabolites offers a viable economic pathway, exemplified by curcuminoid purification.

Conclusions:

  • New separation techniques are essential for overcoming limitations in large-scale industrial applications.
  • Developing efficient separation processes is a key step towards realizing a sustainable bio-based future.
  • Interdisciplinary collaboration is vital for advancing biomass valorization and bio-based technologies.