Search Results Collection Resources (6)

View
Selected filters:
  • Potassium
Cereal Magnets
Conditions of Use:
Read the Fine Print
Rating

Student groups compete to design a process that removes the most iron ...

Student groups compete to design a process that removes the most iron from fortified cereal. Students experiment with different materials using what they know about iron, magnets and forces to design the best process for removing iron from the cereal samples.

Subject:
Engineering
Physics
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering NGSS Aligned Resources
Author:
Engineering K-PhD Program,
Liz Harper
Date created
4-محرم-1437
Fortified Breakfast
Conditions of Use:
Read the Fine Print
Rating

In this lesson, students will learn that minerals are a necessary part ...

In this lesson, students will learn that minerals are a necessary part of our diet. They will learn that different minerals have different functions in the body. More specifically, they will discover that iron is necessary to carry oxygen around the body. In the associated activity, students will design a process that removes the most iron from the cereal.

Subject:
Engineering
Nutrition
Material Type:
Activity/Lab
Lesson Plan
Provider:
TeachEngineering
Provider Set:
TeachEngineering NGSS Aligned Resources
Author:
Engineering K-PhD Program,
Liz Harper
Date created
13-ربيع الأول-1432
Selective extraction of uranyl ions using ion-imprinted chelating microspheres
Conditions of Use:
No Strings Attached
Rating

In this work| uranyl complex with Schiff base derived from condensation of ...

In this work| uranyl complex with Schiff base derived from condensation of p-aminostyrene and
salicyaldehyde (HASS) was synthesized. Both ligand and uranyl complex were characterized using elemental
analysis| FTIR| 1H and 13C NMR spectra. The complex was then copolymerized with styrene and
divinylbenzene cross-linker using potassium persulfate free radical initiator through emulsion polymerization
technique. The uranyl ions were then leached out from the cross-linked network to finally
produce uranyl ion-imprinted microspheres (U-PASS)| which were investigated using SEM and FTIR.
The effect of various significant parameters such as pH| temperature| contact times and initial uranyl
concentration on the removal of uranyl from aqueous solution was examined and the results indicated
that the adsorption was exothermic in nature and the kinetics of adsorption fit with the second-order
kinetic model. Also| Langmuir adsorption isotherm exhibited the best fit with the experimental results
with maximum adsorption capacity 147.8 mg/g. Moreover| the selectivity studies revealed that the
ion-imprinted microspheres resin exhibited an obvious affinity toward the uranyl ions in presence of
other interfering metal ions compared to the non-imprinted resin.

Subject:
Applied Science
Material Type:
Unit of Study
Provider:
University of Tabuk
Author:
Nadia Hussein ( د. ناديه حسين)
University of Tabuk
Date created
25-جمادي الأولى-1440
sodium potassium pump animation
Conditions of Use:
Remix and Share
Rating

The sodium/potassium pump is a good example of active transport of molecules ...

The sodium/potassium pump is a good example of active transport of molecules across a membrane. In this example, active transport is coupled to ATP hydrolysis to obtain enough free energy to transport the ions against their concentration gradient. This ion pump is an example of antiport membrane transport, where the transported molecules are pumped across the membrane in opposite directions (as opposed to synport). The sodium gradient is generated for use by cotransport systems, such as the active transport of glucose from the extracellular environment into the inside of the cell. The non-equilibrium state of the sodium gradient is essentially free energy to be used for the import of molecules against their own concentration gradient.

Subject:
Life Science
Physical Science
Material Type:
Lecture
Provider:
Global institute of medical sciences
Author:
Dr.G.Bhanu Prakash
Date created
9-جمادي الآخرة-1438