Effects of vertical location and artificial substrate on colonization of algal periphyton Variation in algal composition among cifferent developmental stages of biological soil crusts in Gurbantunggut Desert Temperature affects the relation between photosynthetic electron transport and oxygen evolution of algae The influence of biological soil crusts on dew deposition and characteristics of soil surface in Gurbantunggut Desert Bromophenols from the brown alga Leathesia nana Safety issues of traditional Chinese medical preparations containing arsenic substances:review starting from Niuhuang Jiedu Pian (Wan) Chemical constituents from red alga Corallina pilulifera Optimization of formulation matrix proportion and preparation technology of realgar floating tablets for gastric retention by uniform design and correlation analysis