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- W3037973507 abstract "Nickel is a valuable sediment material obtained by mining. The main problem in the nickel post-mining land at Pomalaa is the toxicity of nickel (Ni) and chromium (Cr). The results of the analysis of soil samples showed that nickel levels reached 11103.74 mg/kg and chromium reached 4030.17 mg/kg. The toxicity limit for plants for nickel is 100 ppm and chromium is 20 ppm. The toxicity of nickel and chromium can cause the degradation of soil and plant fertility. Bacteria are biological agents that are environmentally friendly which can be used to reduce metal toxicity on post-mining land. This study aims to examine biochemically 6 indigenous bacteria resistant to 10 ppm NiCl 2 and 4 indigenous bacteria resistant to 10 ppm CrCl 2 and identification. Biochemical tests were carried out namely gram test (3% KOH), catalase test (3% H 2 O 2 ), oxidation-fermentation (O-F)test and endospores test. Based on the results of biochemical tests known indigenous bacteria from the genus Bacillus Sp. is gram-positive (+) bacteria that do not have the catalase enzyme, do not have the ability to use carbohydrates and produce endospores in their life cycle while indigenous bacteria from the genus Clostridium sp. is a gram-positive (+) bacterium which in part has the enzyme catalase, all of which have the ability to use carbohydrates and only some of them produce endospores." @default.
- W3037973507 created "2020-07-02" @default.
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- W3037973507 date "2020-01-31" @default.
- W3037973507 modified "2023-09-23" @default.
- W3037973507 title "Semi-Global Output Feedback Stabilization from Non-Minimum Nonlinear Phase Systems" @default.
- W3037973507 doi "https://doi.org/10.31327/icusn-adri.v1i0.1060" @default.
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