Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, College of Chemistry and Chemistry Engineering, Qiqihar University, Qiqihar 161006, China ...

Getting a case of acid reflux (heartburn) once in a while isn't unusual, but some people suffer from burning discomfort, bloating and belching almost every time they eat. About 20% of the population ...

The availability of soil nitrogen (N) and phosphorus (P) are alternatively limiting elements for primary ... Soil pH at the study sites ranged from 6.3 to 7.9. Soil depth averaged 50–80 cm in valleys ...