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179.770  Articles
1 of 17.977 pages  |  10  records  |  more records»
Vibration during machining operation is a major issue that lowers cutting operation efficiency. Usually high cutting forces are encountered during machining processes, consequently shortening cutting tool lifetime. Thus, the metal removable rate is reduce... see more

In this article we discuss several methods for predicting nickel ore content inside the soil under a given area/region. The prediction is the main objective of the exploration activity which is very important for conducting the exploitation activity from ... see more

The voltage of an alkaline electrolyte-based battery is often limited by the narrow electrochemical stability window of water (1.23 V). As an alternative to water, ionic liquid (IL)-based electrolyte has been shown to exhibit excellent proton conducting p... see more

This paper presents the results of a study on the catalytic activity and selectivity of nickel and palladium catalysts in hydrogenation reactions of nitro- and acetylene compounds. It was shown that the activity and selectivity of nickel catalysts in the ... see more

This study aims to determine whether Indonesia’s nickel ore export restriction policy is in accordance with the principles of international economic law. It is because Indonesia’s actions in implementing quantitative restrictions on the export of nickel o... see more

The crime of illegal nickel ore mining is a crime in the mining business carried out by individuals, groups of people, or companies/foundations with legal entities in which their operations do not have a legal permit from government agencies based on the ... see more

The reduction behavior of nickel oxide (NiO) and zirconia (Zr) doped NiO (Zr/NiO) was investigated using temperature programmed reduction (TPR) using carbon monoxide (CO) as a reductant and then characterized using X-ray diffraction (XRD), nitrogen absorp... see more

Hydrogen gas is a clean and sustainable fuel/energy carrier considered to be a possible alternative to fossil fuels. Sorption enhanced biogas steam reforming is a process which combines a CO2 adsorption unit with a hydrogen production unit. In the CO2 sor... see more

The study is devoted to the development and testing of the electrochromic device based on Ni(OH)2/PVA (polyvinyl alcohol) composite and mesh counter-electrode. A copper wire with a layer of electroplated silver layer is proposed as a mesh material. Glass ... see more

1 of 17.977 pages  |  10  records  |  more records»