[Effects of Bushen Zhuanggu Granules on expressions of serum GH with IGF-1 and its receptors in bone tissue of ovariectomized rats].

To investigate the effects of Bushen Zhuanggu granule on the expressions of serum growth hormone (GH) and insulin-like growth factor-1(IGF-1) and their receptors in bone tissues of ovariectomized rats. Forty-eight SD female rats (weight 273±21.3 g) were divided into 4 four groups: the dosage of Bushen Zhuanggu granule group (BSZG) was 2.

Formation potential of nine nitrosamines from polyacrylamide during chloramination.

Cationic polymers, which are commonly used as flocculants and coagulant aids in water and wastewater treatment, have been recently reported to promote the formation of nitrosamines. Most of the findings to date are based on poly (epichlorohydrin dimethylamine) and poly (diallyldimethylammonium chloride), while few studies have considered nitrosamines formation of polyacrylamides. In this work, the nitrosamines formation from non-ionic, anionic and cationic polyacrylamides was evaluated.

Factors affecting -nitrosodimethylamine formation from poly(diallyldimethyl-ammonium chloride) degradation during chloramination.

Poly(diallyldimethylammonium chloride) (polyDADMAC) has been shown to be an important precursor of the probable human carcinogen -nitrosodimethylamine (NDMA) when in contact with chloramine. In this study, we conducted an orthogonal experiment design to evaluate the effects of pH values, ammonia, bromide, natural organic matter (NOM) and monochloramine dosages on the formation of NDMA from polyDADMAC during chloramination. Meanwhile, single-factor experiments of pH, bromide and NOM prove the results of orthogonal experiment.

Polyamines content and physiological and biochemical responses to ladder concentration of nickel stress in Hydrocharis dubia (Bl.) Backer leaves.

Influence of ladder concentration of nickel (Ni) on the leaves of Hydrocharis dubia were studied after 3 days treatment. The accumulation of Ni, the content of polyamines, proline, malondialdehyde (MDA) and soluble protein, as well as the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in the leaves were investigated. The result indicated that the toxicity of Ni manifested in respective aspect of physiological and biochemical characters.