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Therefore, the quantity of ammonium nitrogen is a routine examination for the monitoring ... is widely used as an intermediate for the production of benzyl compounds and quaternary ammonium compounds ...

Department of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan ...

sublimation, distillation, differential extraction, chromatography - principles and their applications. Qualitative analysis - Detection of nitrogen, sulphur, phosphorus and halogens. Quantitative ...

Dark matter, also known as hidden/missing mass or nonluminous matter, is a component of the universe that spans 90 orders of magnitude in mass, ranging from ultralight bosons (often referred to as ...

Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610299, China University of Chinese Academy of Sciences, Beijing 100049, China ...

ANGOLA, La. — Louisiana has carried out its first nitrogen gas execution on a man convicted of a killing decades ago, his lawyer says. The U.S. Supreme Court rejected a last-ditch effort to ...

Louisiana on Tuesday executed a death row inmate using nitrogen gas for the first time in state history and only the fifth time in U.S. history. Death row inmate Jessie Hoffman's execution is the ...

ANGOLA, La. (AP) — Louisiana used nitrogen gas to put a man to death Tuesday evening for a killing decades ago, marking the first time the state has used the method as it resumed executions after a 15 ...

Louisiana used nitrogen gas to put Jessie Hoffman Jr., 46, to death Tuesday evening in the state's first execution in 15 years. Nitrogen gas has been used just four other times to execute a person ...