9 resultados para sterling silver

em Brock University, Canada


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Lady's wool blazer circa 1967

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This hood was presented during Brock's first ever convocation in May of 1967.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Nanoporous materials with large surface area and well-ordered pore structure have been synthesized. Thiol groups were grafted on the materials' surface to make heavy metal ion pre-concentration media. The adsorption properties ofthe materials were explored. Mercury, gold and silver can be strongly adsorbed by these materials, even in the presence of alkaline earth metal ion. Though the materials can adsorb other heavy metal ions such as lead and copper, they show differential adsorption ability when several ions are present in solution. The adsorption sequence is: mercury> == silver> copper » lead and cadmium. In the second part of this work, the memory effects of mercury, gold, silver and boron were investigated. The addition of 2% L-cysteine and 1% thiourea eliminates the problems of the three metal ions completely. The wash-out time for mercury dropped from more than 20 minutes to 18 seconds, and the wash-out time for gold decreased from more than 30 minutes to 49 seconds. The memory effect of boron can be reduced by the use of mannitol.

Relevância:

20.00% 20.00%

Publicador:

Relevância:

20.00% 20.00%

Publicador:

Resumo:

A photograph of Dorothy Rungeling with the Silver Cup, the caption reads "Dorothy Rungeling, Canadian woman flier, holds Governor-General's Silver Cup, which she won, as well as a cheque for $500 for winning the Governor-General's Race at the National Air Show held in Toronto last September."

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Black and white photograph, 12 cm x 9 cm, of Margaret Julia Woodruff Band in a seated position, wearing a wedding dress and veil. The photo was taken by Dudley Hoyt of New York. The photo is encased within an ornate, silver frame which is engraved with the initials “M.J.W.”.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

A box commemorating King George V's silver jubilee in 1935.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

A silver pocket knife with the initials W.K.C. [William Knapp Cleveland]. The knife measures 15 cm in length when opened and 8 1/2 cm in length when closed. There is no silver mark on the knife, but the word "coin" is printed on the blade.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Bond (1 page, printed) between Isaac Sterling of the Township of Salt fleet to William Dickson of Niagara and Thomas Clark of Queenston (regarding the Last Will and Testament of Robert Hamilton) for payment of 153 pounds, 12 shillings and 3 pence to be made to Dickson and Clark, May 21, 1819.