1. The history of trivalent chromium electroplating was looked back.

2. A trivalent metallic element of the rare earth group, it could occurs with yttrium.

3. Trivalent chromium passivation shall be used unless written exception or specification update provided.

4. The usual source of trivalent cations in water treatment is alum ( aluminum sulfate ).

5. White passivating liquor trivalent chromium for zinc plating is prepared based on a new chemical formulation.

6. The development history of trivalent chromium passivation for zinc plating was overviewed.

7. The effects of stimulating or inhibiting of trivalent arsenic on DNA synthesis were always stronger than that of pentavalent arsenic.

8. We has discussed the mechanism of the trivalent synaptic adjustment, and it's important use to control the chiasmata and disjunction of the chromosomes.

9. The plating process involves trivalent chrome passivation, and so is free from Cr 6.

10. The trivalent vaccine against typetype 3 against type 1 type one and highly effective against typetype 2.

11. Trivalent arsenic appears to be dearsenized less easily than pentavalent arsenic.

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12. Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.

13. The major advantages and disadvantages of trivalent chromium electroplating were introduced.

14. The efficient luminescence centres were found to be trivalent neodymium ions which, by a crystal field analysis, were shown to be located at zinc substitutional sites.

15. One means of accomplishing this end is to add trivalent cations to the water.

16. Meningococcal polysaccharide vaccines are available in either bivalent (groups A and C), trivalent (groups A, C and W), or tetravalent (groups A, C, Y and W135) forms to control the disease.

17. Following laboratory confirmation of Neisseria meningitidis serogroup W135 in two specimens of cerebral spinal fluid, the ICG has provided 102 375 doses of trivalent ACW vaccine.

18. In acid and alkali soil, there are mainly indissoluble bivalent or trivalent phosphates, which cannot be utilized by plants.

19. She explains that health workers have been using what are called trivalent vaccines in some places.

20. It was studied that the graphite-based lead dioxide anode which had been electrochemically activated was used to electrogenerate trivalent cobalt ion by means of coulometry at ambient temperature.

21. The International Coordinating Group (ICG) on Vaccine Provision for Epidemic Meningitis Control has provided 178,000 doses of trivalent vaccine for a mass vaccination campaign.

22. In the Egyptian study researchers randomly assigned 421 newborns to receive either the monovalent or trivalent vaccine.

23. The hazards of hexavalent chromium electroplating, and the benefits of trivalent chromium electroplating were analyzed.

24. Monovalent oral polio vaccines (OPV) – targeted at poliovirus types 1 or 3 – appear to work faster than traditional trivalent OPV to build immunity against these specific polio types.