About 1,271,154 results (3,116 milliseconds)

Tarnished gold?

https://groups.google.com/g/rec.crafts.jewelry/c/aWYnUoEEnog
A friend on mine was in a hot tub the other day, and her 14k stamped bracelet and necklace tarnished. Any one know what did this? Is there a good way to

WO2022072545A1 - Multi-coordinate gold-phosphine compounds ...

https://patents.google.com/patent/WO2022072545A1/en
Consequently, single dose compositions can contain such amounts or submultiples thereof to make up the daily dose. The dosage can be adjusted by the ...

US4941917A - Process for recovery of precious metals from ...

https://patents.google.com/patent/US4941917A/en
... does not impede or interfere with the subsequent gold extraction steps. In a ... Hence, chemical oxidation such as chlorine dioxide can cause chain ...

US3284519A - Stabilization of chlorinated paraffin wax - Google ...

https://patents.google.com/patent/US3284519A/en
Highly chlorinated parafiin Waxes, e.g., containing up to about 70% of chemically-combined chlorine, can be prepared by various procedures, but they are ...

US2835569A - Process of extracting gold and other metals from ...

https://patents.google.com/patent/US2835569A/en
If the initial ore does not contain an amount of arsenic greater than the quantity necessary to maintain a 1:1 ponderal ratio with the iron present in the ore, ...

US4605537A - Sulfide as a hypochlorite kill agent - Google Patents

https://patents.google.com/patent/US4605537A/en
... gold cyanide complexes [Au(CN) 2 --]. The long chain carbon compounds form stable complexes with the gold compounds. Carbonaceous gold-containing ores are ...

‪Liberty Sheunesu Mapamba‬ - ‪Google Scholar‬

https://scholar.google.com/citations?user=Sxv3HXUAAAAJ&hl=en
Urumaya Resources - ‪‪Cited by 43‬‬ - ‪Operations‬ - ‪Supply Chain‬ - ‪Process Engineering‬ - ‪Technology and Sustainability‬

US20190292436A1 - Chlorine Dioxide Containing Mixtures And ...

https://patents.google.com/patent/US20190292436A1/en
Damage can restrict the permeability of the wellbore and near-wellbore region to the flow of oil and/or gas, thus contributing to declining production. [0003].

US5104445A - Process for recovering metals from refractory ores ...

https://patents.google.com/patent/US5104445A/en
In addition, chlorine gas dissolves into the incipient liquid film up to 1 gram/liter. This is important for gold, for example, because it will not form a ...

CN115011792A - Method for regenerating gold from deactivated ...

https://patents.google.com/patent/CN115011792A/en
... chain in the field of supported gold catalysts. Therefore, it is urgently ... Compared with the conventional roasting process, the method can obviously ...

USRE41279E1 - Acidic aqueous chlorite teat dip with improved ...

https://patents.google.com/patent/USRE41279E1/en
... chlorine dioxide and can be immediately contacted with the target animals. ... GOLD PLUS chlorine dioxide formulations. FIG. 3 , shows a graph of the ...

Mineralogy and its specimens — Google Arts & Culture

https://artsandculture.google.com/story/mineralogy-and-its-specimens-museu-da-obra-salesiana-no-brasil-mosb/xAVRqB_umlU4IQ?hl=en
With 1 gram of gold, you can get up to 2,000 meters of wire just 0.0001 ... Its name comes from the Greek khrysos (gold) + colla (necklace). It was ...

‪Haoran Liu‬ - ‪Google 学术搜索‬

https://scholar.google.com/citations?user=0Uml7bsAAAAJ&hl=en
... chlorine, alkyl amine side chain and α … X Gao, C Zhou, H Liu, L Liu, J Tang ... gold nanoparticles and a body temperature-activated gel-forming system.

‪Roger Dixon‬ - ‪Google Scholar‬

https://scholar.google.com/citations?user=Pm9PfcYAAAAJ&hl=en
University of Pretoria - ‪‪Cited by 483‬‬ - ‪Environmental Science‬ - ‪Geology‬ - ‪Mineralogy‬ - ‪Botany‬ - ‪Chemistry‬

‪Tracey van Heerden‬ - ‪Google Scholar‬

https://scholar.google.com/citations?user=UK8meq4AAAAJ&hl=en
Insights into the unusual role of chlorine in product selectivity for direct hydrogenation of CO/CO2 to short-chain olefins. IK Ghosh, Z Iqbal, T van Heerden, E ...

WO2020198778A1 - Materials and processes for recovering ...

https://patents.google.com/patent/WO2020198778A1/en
... can react with gold metal and extract the gold into water. ... The amount of ascorbic acid should be at least equimolar to the combined gold and active chlorine.

EP1484606A1 - Chlorite sensor using a gold electrode - Google ...

https://patents.google.com/patent/EP1484606A1/en
A very high anodic potential can be used with the sensor according to the invention, which is only about 300 mV below the potential of the beginning anodic ...

BE460032A - - Google Patents

https://patents.google.com/patent/BE460032A/h
ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ... -1 chlorosubstituted benzene gold Chemical class 0.000 description 4; 238000001914 ...