Publications by authors named "Youjian Yang"

This study presents a groundbreaking approach to modeling the Hall-Héroult cathode used in aluminum production. Our innovative model is grounded in a sophisticated porous electrode methodology coupled with state-of-the-art numerical simulations. This enables us to capture the intricate physicochemical processes within the system precisely, encompassing the migration, diffusion, and convection of ionic species.

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Aluminum electrolyte is a necessity for aluminum reduction cells; however, its stock is rising every year due to several factors, resulting in the accumulation of solid waste. Currently, it has become a favorable material for the resources of lithium, potassium, and fluoride. In this study, the calcification roasting-two-stage leaching process was introduced to extract lithium and potassium separately from aluminum electrolyte wastes, and the fluoride in the form of CaF was recycled.

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Background: Elemene, an active anticancer extract derived from Curcuma wenyujin, has well-documented anticarcinogenic properties. Nevertheless, the role of elemene in prostate cancer (PCa) and its underlying molecular mechanism remain elusive.

Purpose: This study focuses on investigating the anti-PCa effects of elemene and its underlying mechanisms.

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Objective: To observe the comprehensive treatment effect of Traditional Chinese Medicine on ventilator-related diseases.

Methods: From January 2021 to August 2022, a total of 80 patients with ventilator-associated pneumonia were selected and divided into a test group and a matched control group based on the random number table, with 40 cases in each group. The control group received traditional Western medical care, and all patients were given tigecycline intravenously.

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With the development of secondary resources, development of suitable methods for the recovery of high value metals from solid waste is crucial for sustainable development. Aluminum electrolysis of China, solid waste, such as waste aluminum electrolyte, has been largely idled and caused serious environmental pollution. In this paper, a novel approach is developed for achieving the separation/recovery of lithium from spent lithium-containing aluminum electrolyte by a sodium carbonate roasting-acid leaching process.

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A bacterial strain designated YYJ7-1 was isolated from farmland soil in China and characterized using a polyphasic taxonomic approach. Cells of strain YYJ7-1 were Gram-staining-positive, aerobic or facultatively anaerobic, rod-shaped, motile and endospore-forming. Growth occurred at 18-42 °C (optimum at 35 °C), at pH 6.

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Due to the extensive use of chloroacetanilide herbicides over the past 60 years, bacteria have evolved catabolic pathways to mineralize these compounds. In the upstream catabolic pathway, chloroacetanilide herbicides are transformed into the two common metabolites 2-methyl-6-ethylaniline (MEA) and 2,6-diethylaniline (DEA) through -dealkylation and amide hydrolysis. The pathway downstream of MEA is initiated by the hydroxylation of aromatic rings, followed by its conversion to a substrate for ring cleavage after several steps.

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Objective: To identify and characterize a novel aryloxyphenoxypropionate (AOPP) herbicide-hydrolyzing carboxylesterase from Aquamicrobium sp. FPB-1.

Results: A carboxylesterase gene, fpbH, was cloned from Aquamicrobium sp.

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Nornicotine is a natural alkaloid produced by plants in the genus Nicotiana and is structurally related to nicotine. Importantly, nornicotine is the direct precursor of tobacco-specific nitrosamine N'-nitrosonornicotine, which is a highly potent human carcinogen. Microbial detoxification and degradation of nicotine have been well characterized; however, until now, there has been no information on the molecular mechanism of nornicotine degradation.

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Objective: To study the fingerprint of Zedoary Turmeric Oil (ZTO) as the bulk drug of Kingkong Elemene for making it safe, effective, stable, and controllable.

Methods: Fingerprints were detected by gas chromatography. β-elemene peak was regarded as reference peak (S).

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