Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
Synthesis and Decomposition Reactions02:17

Synthesis and Decomposition Reactions

Synthesis and decomposition are two types of redox reactions. Synthesis means to make something, whereas decomposition means to break something. The reactions are accompanied by chemical and energy changes.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Morphine augmentation increases gallbladder visualization in patients pretreated with cholecystokinin.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine·1997
Same author

Right-sided cardiac tumors detected by transesophageal echocardiography and its usefulness in differentiating the benign from the malignant ones.

The American journal of cardiology·1997
Same author

Postoperative MRI of anorectal malformation.

Journal of the Formosan Medical Association = Taiwan yi zhi·1997
Same author

Value of somatostatin receptor scintigraphy: a prospective study in gastrinoma of its effect on clinical management.

Gastroenterology·1997
Same author

Blood levels of reduced haloperidol versus clinical efficacy and extrapyramidal side effects of haloperidol.

Progress in neuro-psychopharmacology & biological psychiatry·1997
Same author

The binge eating and emotional change in a patient with postinfectious encephalomyelitis.

The Kaohsiung journal of medical sciences·1997

Related Experiment Video

Updated: Jul 12, 2026

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
08:44

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Synthesis of todorokite.

D C Golden, C C Chen, J B Dixon

    Science (New York, N.Y.)
    |February 14, 1986
    PubMed
    Summary

    Researchers synthesized todorokite, a manganese oxide mineral, using a novel two-step method. The resulting mineral exhibited well-crystallized todorokite structures, similar to natural samples.

    Area of Science:

    • Mineralogy
    • Materials Science
    • Chemistry

    Background:

    • Todorokite is a complex manganese oxide mineral with potential applications in catalysis and energy storage.
    • Synthesis of todorokite typically involves hydrothermal methods, but achieving well-crystallized structures can be challenging.

    Purpose of the Study:

    • To develop an efficient two-step synthesis procedure for producing well-crystallized todorokite.
    • To investigate the structural characteristics and formation mechanism of synthesized todorokite.
    • To explore the potential of using different birnessite precursors for todorokite synthesis.

    Main Methods:

    • Sodium birnessite was synthesized and then ion-exchanged with magnesium to form magnesium birnessite.
    • Magnesium birnessite was autoclaved under saturated steam at 155°C for 8 hours.

    More Related Videos

    Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route
    08:26

    Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route

    Published on: April 3, 2016

    Related Experiment Videos

    Last Updated: Jul 12, 2026

    Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
    08:44

    Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

    Published on: February 23, 2016

    Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route
    08:26

    Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route

    Published on: April 3, 2016

  • Calcium and nickel birnessite were also autoclaved under similar conditions for comparison.

    • Main Results:

    • Well-crystallized todorokite with a specific chemical composition was successfully synthesized.
    • The synthesized todorokite particles displayed a unique morphology of fibers extending from a central plate.
    • Infrared spectra and X-ray diffraction patterns matched those of natural todorokite.
    • Todorokite structures were also formed from calcium and nickel birnessite, though to a lesser extent.

    Conclusions:

    • A two-step synthesis involving magnesium birnessite autoclaving is an effective method for producing well-crystallized todorokite.
    • The synthesized todorokite exhibits structural and spectral similarities to natural samples.
    • The study demonstrates the feasibility of todorokite formation from various birnessite precursors under specific hydrothermal conditions.