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Related Concept Videos

Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Plasticizers01:31

Plasticizers

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Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
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What is Natural Selection?01:32

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Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
Retarders01:19

Retarders

Retarders are chemical admixtures designed to extend the setting time, which is especially useful when there is a delay in sequential concrete pours to prevent cold joints and to achieve a cohesive structure. Retarders, when used in appropriate amounts, can also enhance the architectural appearance of exposed aggregate finishes.
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Rapid In Vivo Assessment of Adjuvant's Cytotoxic T Lymphocytes Generation Capabilities for Vaccine Development
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How to define green adjuvants.

Bert Beck1, Walter Steurbaut, Pieter Spanoghe

  • 1Institute for Agricultural and Fisheries Research, Technology and Food Science Unit, Agricultural Engineering, Merelbeke, Belgium. bert.beck@ilvo.vlaanderen.be

Pest Management Science
|May 17, 2012
PubMed
Summary
This summary is machine-generated.

Green adjuvants are defined using production and environmental impact approaches, focusing on renewable resources and minimal ecological harm. This research provides a tentative definition and outlines future directions for green adjuvant development and regulation.

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Area of Science:

  • Agricultural Chemistry
  • Environmental Science
  • Green Chemistry

Background:

  • The definition of 'green adjuvants' lacks clarity, hindering their development and adoption.
  • Existing frameworks like the OECD definition of green chemistry provide a basis for defining sustainability in chemical production.

Purpose of the Study:

  • To formulate a clear definition for 'green adjuvants' based on production and environmental impact.
  • To propose future research and legislative pathways for green adjuvants.

Main Methods:

  • Developed a production-based definition for green adjuvants, emphasizing renewable raw materials and energy efficiency.
  • Formulated an environmental impact-based definition considering human/environmental safety, active ingredient mobility, toxicity, and exposure.
  • Integrated both approaches to establish a tentative definition for green adjuvants.

Main Results:

  • Production-based definition: Green adjuvants utilize renewable resources and efficient energy (preferably renewable).
  • Environmental impact-based definition: Green adjuvants have low impact, do not increase active ingredient risks, and can reduce pesticide dosage by enhancing performance.
  • A tentative definition for green adjuvants was proposed, synthesizing both perspectives.

Conclusions:

  • A dual approach (production and environmental impact) is necessary for defining green adjuvants.
  • The proposed definitions provide a framework for future research, development, and regulatory policies concerning sustainable adjuvants in agriculture.