Advanced Materials Research Vols. 955-959

Abstract: Molecularly imprinted polymers (MIPs) are synthetic materials that can be the environmental protection extraction method in TCM research and industry. They can overcome the defects of traditional extract methods and environmental pollution. In our research, MIPs were prepared by precipitation polymerization with neuro-protective picroside I and ginsenoside Rb1 as the template molecule. Moreover, the morphology of MIPs was characterized by electron microscope scanning and the static adsorption capacity was measured by the Scatchard equation. Finally, MIPs were made into MIP-SPE columns to enrich the template molecule and its analogues comparing with C₁₈-SPE column and the results show that MIPs have good affinity and selectivity towards the Rb1 and Picroside I in SPE columns. This research may offer a more environmentally friendly method to extract active compounds in the traditional herbal.

Abstract: In this study, nanoscale zero-valent iron (nZVI) and nZVI/reduced graphene oxide (RGO-nZVI) nanocomposites were prepared, and the effect of nZVI, RGO-nZVI and graphene oxide (GO) on Indian marigold were examined by pot trials with contaminated soils amended with nanomaterials. The observed results show that 0.05% nZVI and 0.05% RGO-nZVI can wilt the Indian marigold, and they exhibit significant in situ mobility in fluvo-aquic soils. In this paper, the feasibility of improving the phytoremediation efficiency of contaminated soils by amending with nanomaterials is also discussed.

Abstract: Bird Nest Fern is a perennial evergreen large epiphytic or herb. Under natural conditions, most nest fern spores lack of suitable conditions for germination, and because of certain conditions are not met and stop growth. the people digging improperly on the Nest Fern ,the Nest Fern resources have been severely damaged, in order to protect the Nest Fern natural resources .we should strengthen the cultivation of nest fern. This study were different amount of coconut husk, different concentrations of 6-BA and different concentrations of GA₃ nest fern spore germination test, results are as follows:When the Coconut husk amount of certain nest fern spore germination rate increased with increasing concentration of 6-BA,6-BA concentration of 0.7mg/L,the spore germination rate of 6.25%. Concentration of 6-BA, nest fern spore germination rate increased with the coconut husk increased. When the coconut husk volume and 6-BA concentration must soak spores with different concentrations of GA₃ 12~15min, nest fern spore germination with GA₃ concentration increases, by analysis of variance, GA3 concentration of 200 mg/L, can greatly enhance spore germination rate; Three true leaves of seedlings grown by transplanting, and has successfully bred a number of nest fern seedlings.

Abstract: The review focuses on the progresses of air microbes in indoor environment, including their sources, sorts, influence of human body health, spread regulation and spatiotemporal distribution characteristics. Most airborne microorganisms attached to the dust particles, which is present in the air in the form of aerosol .The distribution of microbe is related with indoor environment condition in the air. The factor which influences it to distribute mainly includes temperature, degree of humidity, wind velocity and weather condition etc. Air microbe is bred easily in ventilation and air conditioning system. The growth of microbe has a tremendous relation with the ventilation and air condition. The distribution of microorganisms in different regions, different buildings and different ventilation system is different from each other.

Abstract: Using the single factor index method and comprehensive pollution index method, the heavy metal pollution situations of 60 points (128 field samples) from a coke-gas factory which is located in the north of China were evaluated, as well as the site sources of pollution were analyzed. Mercury, arsenic, lead, zinc, and copper could be detected in the field. Compared with the soil environmental quality standards (2008), it was found that mercury (67 times higher than standard) and arsenic (3.5 times higher than standard) represented the most serious pollution among these five metals, while the pollution situation of copper and zinc were the lightest.

Abstract: In order to quantify the microbial oil displacement efficiency, a group of petroleum-degrading bacteria were obtained from the sludge samples. Three strains of them with maximum degradation performance were tested to determine how the concentration of bacteria and nutrition affect the oil displacement efficiency. The volume of oil displaced by different strain was measured to find the rules of oil displacement efficiency change with time. From a practical point of view, the research found that there exist an optimum value between the oil displacement efficiency and concentration of bacteria and nutrient, which was related to crude oil price and cost of biological agents.

Abstract: The recognition and sensing of biologically and environmentally important species has emerged as a significant goal in the field of chemical sensors in recent years¹. Fluorogenic methods in conjunction with suitable probes are preferable approaches for the measurement of these analytes because fluorimetry is rapidly performed, is nondestructive, is highly sensitive, is suitable for high-throughput screening applications^2,3. We synthesized rhodamine derivatives compounds by a Schiff base reaction.

Abstract: Methanotroph uses methane as a sole carbon and energy source, plays an important role in the balance of atmospheric methane and also has potential values in environmental management. Based on the taxonomy of methanotroph, a preliminary conclusion could be drawn on the mechanism of methane oxidation, its distribution in ecosystems, and influencing factors to study methanotroph, as well as the application of methanotroph in environmental management.In this paper we also analysis the current existing problems of methanotroph in the research of wetland soil, and pointed out the strengthened aspects of research for the future work in this field.

Abstract: The major goal of microbial ecology is to study the structure and function of complex microbial communities. Various bioinformatics software were employed to handle a large number of genomic information emerged by using high throughput sequencing. This paper summarizes application of bioinformatics in microbial ecology and their corresponding software used in α, β-diversity studies; and finally expounds the important roles in establishment of four synthesis databases.

Abstract: Corn (Zea Mays L.) seedlings were in four cadmium (Cd) levels of 0-1mg/L in a hydroponic system to analyze the antioxidant enzyme system, Cd content in the shoots and roots, growth responces in the leaves of corn and phytosiderphore release. There was a significant decrease in superoxide dismutase (SOD) activities, chlorophyll concentration (Chl), shoot and root biomass and phytosiderphore release from Cd 0mg/L to 1mg/L. This indicated that Cd stress induced an oxidative stress response in corn seedlings, characterized by a decrease in activities of SOD and chl concentration. Root and shoot Cd contents of corn increased with their exposure Cd level, and the highest Cd concentration occurred in roots, followed by leaves.