Both hydrogen sulfide (H2S) and methyl mercaptan (CH(3)SH) are frequently detected in large amounts in malodorous mouth air. We investigated the bacterial composition of saliva of 30 subjects with severe oral malodor exhibiting extreme CH(3)SH/H(2)S ratios (high H(2)S but low CH(3)SH concentrations, n 5 14; high CH(3)SH but low H2S concentrations, n 5 16) and 13 subjects without malodor, using ...

Lactobacillus equigenerosi NRIC 0697(T) was isolated from the gastrointestinal tracts of healthy thoroughbreds. This strain produced unique spherical or oval cells, which is rare in the genus Lactobacillus. Here, we report the draft genome sequence of this strain.

This paper describes the development of a steady-state anaerobic digestion model for biological sulphate reduction using primary sewage sludge (PSS) as substrate. The model comprises: a chemical oxygen demand (COD) based hydrolysis kinetics part in which the PSS biodegradable COD and sulphate removals are calculated for given hydraulic and sludge retention times; a C, H, O, N, P, S, COD and cha...

WEN CHEN, WEIXING HE, AND TINGXIU ZHONG Affiliation: Department of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China Affiliation: Department of Electrical Engineering, Jiangsu University of Science & Technology, Zhenjiang, Jiangsu 212013, P. R. China. Corresponding author: Wen Chen (PhD), Mail address: P. O. Box 9601BB, Shanghai Jiao Tong University, Shanghai 2...

# The two authors contributed equally to this work *Address correspondence and reprint requests to: Jing-Yuan Fang, MD, PhD or Jie Hong, PhD, GI Division, Shanghai Jiao-Tong University School of Medicine Renji Hospital, Shanghai Institution of Digestive Disease; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health (Shanghai Jiao-Tong University); State Key Laboratory of Oncogene ...

Emissions of H2S from publicly owned treatment works is a serious problem, therefore collection and treatment of these emissions is essential. In this work, the performance of a bench scale activated sludge system used for the removal of H2S from foul air was investigated, and the effects of H2S concentration (5 to 50 ppm,) on COD reduction and biomass settleability were studied. After biomass ...

Biotreatment of various ratios of H2S and NH3 gas mixtures was studied using the biofilters, packed with co-immobilized cells (Arthrobacter oxydans CH8 for NH3 and Pseudomonas putida CH11 for H2S). Extensive tests to determine removal characteristics, removal efficiency, removal kinetics, and pressure drops of the biofilters were performed. To estimate the largest allowable inlet concentration,...

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Alzheimer's disease (AD) is the most common neurodegenerative disorder, responsible for >50% of all dementia cases. Sodium azide (NaN3) inhibits cytochrome oxidase by irreversibly binding to the heme cofactor and selectively reducing the complex IV activity, which is present in post‑mortem AD brains. Previous data demonstrated that hydrogen sulfide (H2S), the third endogenous gaseous mediator, ...