Advanced Materials Research Vols. 396-398

Abstract: This paper thinks that the reasons for ineffective management of environmental performances of Party and government leaders of the county and municipality in Poyang Lake Ecological Economic Zone are that the leaders lack concept of sustainable development, have unclear understanding of purpose of performance evaluation, do not want to discover shortcomings, the evaluation subjects have serious thought of officialdom standard and deeply rooted thought of ruling by people, and the evaluation information is hard to collect and performance management guarantee system is incomplete; this paper provides measures including improving understanding of importance of performance management of county and municipal leaders in Poyang Lake Ecological Economic Zone, constructing diversified evaluation subjects for environmental performances of the leaders, making evaluation indicators in a scientific way, using evaluation results comprehensively, improving basic guarantee system of performance management and cultivating nice performance management culture.

Abstract: Keywords: SBRmethod, Wastewater from production of PolyTHF, extraction method Abstract: The wastewater from the production of polytetrahydrofuran (PolyTHF) was treated with union between of the extraction method and SBR method. The results showed that at 25°C, phase ratio of 1:1 and equilibrium time of 40min, using chloroform as extraction agent, CODCr removal rate could reach as high as 75%. After the treatment of wastewater was treated by SBR method, which meet the national level of discharging standard, CODCr removal could reach at 100mg/L.

Abstract: The existence forms of chlorine entered into blast furnace are chloride created by Cl- and metal cation or organic speciation absorbed in specular coal or structure macromolecule of coal. The chlorine entered into blast furnace merges with blast furnace gas in the form of HCl after conducted a series of chemical reactions. With the increasing of HCl content in blast furnace gas, the coke reactivity decreases and the coke post reaction strength increases, and the reduction process of iron ore is restrained and the low temperature reduction degradation property increases. However, the corrosion of gas pipeline and TRT blade is aggravated by the HCl in blast furnace gas, and then blast furnace gas conveying process and normal operation of TRT unit are affected.

Abstract: Utilize different solvents to extract and salt out soluble protein from the Cordyceps rich in selenium which is artificially cultivated, thus obtaining different types of selenoproteins contained in it, and then pyrogallol autoxidation method is applied to determine their antioxidant activity, meanwhile, double-channel atomic fluorescence is used to detect the materials and their selenium content. The results show that: various proteins of Cordyceps rich in selenium all contain selenium, followed by alkali-soluble selenoprotein > alcohol-soluble selenoprotein > salt-soluble selenoprotein > water-soluble selenoprotein; their ability to remove superoxide anion is followed by water-soluble protein> alkali-soluble protein > salt-soluble protein> alcohol-soluble protein, the clearance rate of selenoprotein with different salting points on superoxide anion is shown as follows: salting selenoprotein with the rate of 70% > salting selenoprotein with the rate of 100% > salting selenoprotein with the rate of 90% > salting selenoprotein with the rate of 80%> salting selenoprotein with the rate of 50%> salting selenoprotein with the rate of 60% ; therefore, selenoprotein of Cordyceps rich in selenium is a kind of natural resource with good antioxidant activity as well as broad application prospects.

Abstract: Halogen free fire-retardant silicon rubber compounds were prepared, using red phosphorus combined with magnesium hydroxide as flame retardants. The flame retardant mechanisms of red phosphorus, magnesium hydroxide were studied by means of comprehensive decomposition studies and combustion tests. The study is intended to illuminate prerequisites and the potential of red phosphorus as a fire retardant for silicone rubber in the condensed phase. The flammability was determined by limited oxygen indices （LOI） and UL 94 test. Thermo-oxidative decomposition kinetics were characterized by thermo-gravimetric analysis (TG). The activation energies were determined using the Friedman method, which do not require knowledge of the reaction mechanism (RM). The results show that the MVMQ/MH/RP composite has a higher thermal stability and lower flammability.

Abstract: Today, The rising of the national large-scale development and construction in eco-tourism area are under the guidance of different ideas. Mongolia is located in a very special geographical environment, so the application of a totally new design concept, using the concept of history and green as specific guidance, will release the endless fascination of its unique prairie landscape, in addition, the history and culture in a class by itself, and the pervasive folkways, pollution-free grassland and residential buildings, the yurts which seem like a patchwork will show the beautiful scenery for tourists. This article combined with natural, historical and cultural of yurts ,expatiated on the origin, type, construction methods, material selection, decoration and other features of yurts of, o that we got constructive comments for development: promotion of history and culture, exert the advantages of unique regional and good material.

Abstract: According to the law of mass balance and charge balance, the lg[P]T-pH diagram of hydroxyapatite in the system of P-Ca-H2O is plotted on the basis of thermodynamic data at 298K and 373K. The thermodynamics condition of hydroxyapatite decomposition is analyzed by thermodynamic equilibrium diagram. The analysis results show that the pH value of solution is a very important factor for the decomposition of hydroxyapatite, and hydroxyapatite can be decomposed on the acid or alkaline condistions. In addition, reaction temperature also has important effect on the hydroxyapatite decomposition. In the acid solution, low reaction temperature can facilitate the decomposition of hydroxyapatite. But in the alkaline conditions, high temperature is beneficial to the decomposition. On the base of thermodynamics analysis results, the verification experiments are carried out on same decomposition conditions. The experimental results accords with the theoretical analysis. The theoretical analysis can guide the research of removing phosphorus from high-phosphorus iron ores.

Abstract: In Gleele-3500 thermal simulation test machine, conduct thermal simulation experiment for high niobium X70 grade pipeline steel at different heating temperature, deformation temperature, deformation extent, cooling rate and coiling temperature. Analysis that the microstructure was influenced by different heating temperature and rolling process. The results showed that, For high niobium X70 grade pipeline steel, controlled heating temperature was1200±20°C, using HTP process, in large cooling rate range all can get the uniform acicular ferrite microstructures.

Abstract: By the headspace-solid phase micro-extraction – gas chromatography – mass spectrometry (Headspace-SPME–GC–MS) technology, this article identifies products from the model reaction between ascorbic acid and methionine (ASA-Met), and studies the impacts of urea on the formation of perfume compounds from the model reaction. 17 perfume compounds have been identified, including pyrazine, sulfur compounds ,thiophene, pyrrole and compounds containing benzene rings, of which sulfur compounds, such as alicyclic sulfides, thioether and pyrazine, are the main flavor components. For urea being added to the model system, one the one hand, the yields of some sulfur compounds will be significantly reduced; on the other hand, it promotes the production of several nitrogen compounds such as methyl pyrazine, ethyl pyrazine and 2,6-dimethyl pyrazine, and other alkyl pyrazine. This indicates that urea inhibits the thermal degradation of Met in the model reaction, and also implies that as the nitrogen source during the thermal degradation of urea NH3 may be generated. After a competing reaction occurs between NH3 and the degradation products of H2S and ASA, nitrogen compounds are formed, such as alkyl pyrazine, so as to cause the lower production of sulfur compounds.

Abstract: Stacking microbial fuel cells (MFCs) in series can provide higher voltage; however, voltage reversal (VR) adversely affects performance of the stacked MFCs. In this paper, diodes are introduced into three stacked MFCs so as to investigate the VR behavior and offer a diodes-based explanation of the VR. The results show that VR occurs in the different stacked MFCs systems. VR of the stacked MFCs connected with forward diodes (～0.37 V) happens in a similar pattern as that without diodes (～0.80 V). However, it only happens at the end of a cycle. This can be analyzed that the resistance of the diodes consume a part of the flowing electrons and the speed of potential changes of the electrodes slows down. Differently, in the stacked MFCs connected with reverse diodes, the voltages of each unit MFC approximately equal their open circuit voltages (～0.75 V), and VR happens in the unit MFC with reverse diodes at the cathode end only. It implies that the imbalanced consumption of electrons in unit MFCs and the potential changes of specific electrode directly result in VR.