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Changes in the frond physiology and ultrastructure of Pteris multifida Poir. were investigated under greenhouse conditions in response to application of arsenic (As) and lead (Pb). Various levels of As and Pb (0, As300Pb500, As600Pb1000 and As900Pb1500 mg kg−1) were applied to the plants. An increasing As and Pb level, as well as a higher duration significantly inhibited plant growth and decreased...
Persistent Organic Pollutants (POPs) mainly cause harm to the reproductive function of human being and animal kingdom, which is a serious threat to human and animal survival or reproduction. This paper blacklisted 70 kinds of POPs and outlined their character and pollution hazards. Therefore, China should strengthen basic research in POPs pollution, strengthen the environmental management and the...
Soil microbial biomass carbon (Cmic), soil basic respiration and soil enzyme activities are the most important biological indicators of soil quality. The effects of single and combined pollution of cadmium (Cd 20mg/kg) and phenanthrene (Phe 50mg/kg) on these biological indicators were investigated in this study under the laboratory incubation conditions. The results showed that the level of Cmic and...
Tetrabromobisphenol A (TBBPA) is widely used throughout the world as flame retardant for electronic equipment or building materials, and is detected in air at the dismantling plant, sewage sludge, sediment or human serum samples. In the present study, we examined the effects of TBBPA on soil polyphenol oxidase, catalase and dehydrogenase activity by indoor simulation method. The results showed that...
Among a series of dose of Yeast immunity polysaccharide (YSP, 0.2%,0.5% and 1%), the time of the experiment was 21d and the index of immunity was measured at different stages. The result showed that YSP had positive effect on the immunity of Apostichopus japonicus at normal states, which it could hold for some time. Immunity function of most tested groups reached the highest level at the 14th day...
As a effective pretreatment of excess sludge treatment, thermochemical hydrolysis method was not only good at cells disintegration, but also enhancing the treatment results of subsequent process. This experiment improving the traditional thermochemical method by separated the thermal process and the alkaline process. Examined SCOD value, SOCD remove rate of sludge and biogas production of anaerobic...
The PAOs was cultivated by two different methods, according to comparison, including that running two cycles each day, each cycle is eight hours, and controlling the concentration of C source in the water are better to the cultivation of PAOs.
Ecological army barrack is the trend and goal of our military camp construction, however, the lack of systematic planning and construction system leads to the difficulties of its operability. A novel system for planning and construction of ecological army barrack is presented in this paper, which consists of ecological planning making, ecologic technology selecting, ecologic culture supporting, and...
The vegetation succession and soil enzyme activities restoration with different growing years was analyzed by applying the spatio-temporal substitution method. The result showed that H. Rhamnoides and A. Desertoru are predominant species of the shrub layer. With the restore years prolonging, the species diversity index (H′, 1/D), saccharase, urease, phosphatase and catalase activities were increased,...
The effects of ionic liquid 1-butyl-3-methylimidazolium chloride ([HMIM]Cl) at the concentrations of 0, 10, 20, 40, 80, 100, 120, 200 mg/L on the length of stem and root of rice seedlings were studied. The activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and the content of malondialdehyde (MDA) (exposed for 4 d) were determined with different concentrations of [HMIM]Cl (0,...
‘Dangshansuli’ pear is one of crisp pears and has a non-climacteric respiratory pattern. With ‘Dangshansuli’ pears which were in different pathological grades of superficial scald as material, the internal physiological indexes were determined to study the physiological change in superficial scald pears. The results indicated that it was obvious positive correlation between the contents of α-farnesene...
Curcumin, a polyphenolic compound derived from dietary spice turmeric, possesses diverse pharmacologic effects including antioxidant, anti-ininflammatory, antitumor and chemoprotective effects. However, its clinical applications were initially limited by its poor absorption, rapid metabolism and rapid systemic elimination. To improve the bioavailability of curcumin, new approaches have to be taken...
10 kinds of common metal ions with concentration range from 1g/L to 3g/L were selected for investigating the effect of metal ions on degradation of fuchsine acid by laccase. The results showed that the degradation was promoted through the addition of Cu2+, Ca2+, Mn2+, Mg2+, Na+ and K+ with concentration range from 1g/L to 3g/L, while it was inhibited with Fe3+, Cr3+, Co2+ and Ni2+ with concentration...
Anaerobic digestion has been applied in various forms and scales to lessen the organic matter in Swine wastewater, but C/N of the anaerobic digesting fluid is low and biochemistry degradation difference. Treatment of swine wastewater anaerobic digestion fluid By SBBR was studied, finally research indicated: SBBR treated swine wastewater anaerobic digesting fluid directly, COD and NH4+-N removal was...
Soil enzyme plays an active role in the material recycling and energy flow of soil biochemical process. This article dealed with the month changes of catalase, dehydrogenase, phosphatase, urease, protease in Suaeda salsa and Aeluropus sinensis in the Yellow River Delta. Meanwhile, the relationship between the soil enzyme activities and physical-chemical factors was discussed by correlation analysis...
Two species of microalgae, Scenedesmus obliqnus and Chlorella vulgaris, were cultivated as free and immobilized cells in synthesized urine to compare algal growth and nitrogen removal. Four levels of initial ammonia concentration were employed, from 25 to 100 mgN/L. No significant differences of growth rates were observed between free and immobilized algae. As to the uptake of nitrogen per cell, immobilization...
Surface soil samples (0∼20cm) were collected from a Calamagrostis angustifolia freshwater marsh in the Sanjiang Plain from May to September and soil active organic carbon including microbial biomass carbon (MBC), easily oxidizable carbon (EOC), dissolved organic carbon (DOC) were analyzed aiming to reveal their seasonal dynamics characterisitics and their correlationships with activities of soil invertase,...
The aim of this research was to investigate the effects of exogenous NO on seed germination, seedling growth, and other physiological characteristics of Brassica napus under PEG stresses. The results indicate that the damages to Brassica napus caused by the stress of 10% PEG were significantly alleviated in the presence of 25µM SNP: the seed germination rate increased by 35.3%; the plant height, main...
Fresh fish Carassius auratus were chosen as experimental animals to study the potential of biological effects after fish were injected with different dose (0.001, 0.006, 0.03, 0.16, 0.78 mg/kg) of polychlorinated biphenyls (PCB). The hepatic biochemical responses to medium-term exposure of PCB were measured as reduced glutathione (GSH) and malondialdehyde (MDA) to assess sub-lethal effects. Clear...
Fresh fish Carassius auratus were chosen as experimental animals, the hepatic biochemical responses to medium-term exposure of PAHs were measured as ethoxyresorufin O-deethylase (EROD) and glutathione S-transferase (GST) to assess sub-lethal effects. Bell-shaped concentration-response curves were obtained of EROD and GST after 15 d exposure. The time-effect relationships of GST activities were found...
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