POLLUTION CHARACTERISTICS AND KEY REACTIVE SPECIES OF VOLATILE ORGANIC COMPOUNDS IN BEIJING-TIANJIN-HEBEI AREA, CHINA

Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China

Abstract Volatile organic compounds (VOCs) are important precursors in the formation of ground-level ozone.In this study, the hourly mixing ratios of 61 ambient VOC species were monitored from 2018 till 2019 in 10 cities in the Beijing-Tianjin-Hebei (BTH) area of China, and the VOC distributions, speciation and photochemistry were also examined.The

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Sellar plasmacytoma with massive bleeding during surgery

Plasmacytoma in the sellar region is an extremely rare occurrence.Sellar plasmacytoma is often difficult to differentiate from pituitary tumors both clinically and radiologically.The occurrence of cranial nerve palsy, read more the preservation of pituitary hormone function, the presence of sellar floor destruction, and better contrast enhancement

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Human Norovirus Evolution in a Chronically Infected Host

ABSTRACT Typically, human noroviruses cause symptoms of acute gastroenteritis for 2 to 4 days.Often, the virions are shed in stool for several days after the symptoms recede, which in turn can lead to further contamination and transmission.Moreover, a number of reports have considered that chronic norovirus infections, i.e., lasting months and year

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