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In this paper, CuO was selected as a catalyst in the production of lactic acid from glucose under alkaline hydrothermal conditions. The addition of CuO can improve the yield of lactic acid efficiently. The highest yield of 37% was obtained under the optimum conditions, i.e., reaction temperature 300 °C, reaction time 60 s, CuO 0.3 mmol and NaOH 2.5 M. An efficient method for producing lactic acid...
The antioxidant activity of triterpenes from Caculis of Schisandra Chinensis(Turcz.) baill by means of ethanol extraction were evaluated by various methods in vitro systems, including total reducing power, superoxide anion radical, hydroxyl radical, DPPH radical-scavenging assays and the POV value. The experimental results show: Triterpenes have better reducing power, stronger antioxidation effect...
In order to expand the development of health edible functions of Acanthopanax leaves, to meet people's demand for low care wine, Acanthopanax low alcohol wine was studied. Corn without Germ and Acanthopanax leaves are main materials, using double enzyme saccharification, low-temperature fermentation technology to produce low-alcohol wine. Saccharification process conditions was optimized by orthogonal...
With China's rapid economic development, the oil as a strategic resource has become increasingly important. As a source of industry, the volatility of oil price affects the interests of many downstream industries, so studying of the effects of volatility of oil price on the cost and profit of related industries is particularly important. This paper studies the Granger causality of the domestic oil...
The development of an Nanotechnology Processes Option for chemical engineers and other students in the School of Chemical, Biological, and Environmental Engineering at Oregon State University is presented. The curricular development attends to content, pedagogy, and different types of knowledge. Assessment results based on Shavelson's cognitive model and plans to weave in a strand that encompasses...
This paper explores some of the fundamental and practical issues related to the behavior of nanoparticles in the environment and their potential impacts on human health. In our research we have explored the reactive behaviors of nanoparticles with contaminants in the environment, how nanoparticle change in response to their environment and time, and how nanoparticles interact with biological systems...
Based on the analyses results of the major and trace elements of the acid soluble (AS) and insoluble (AI) fractions of the Shell Bar section from the Qaidam Basin(QB) in the NE Tibetan Plateau(TP), and the correlations between the related elements and their ratios, the depositional environment of the section was discussed. The results show that the major and trace elements and their ratios of AS are...
There exist plenty of pipe drawings of the design and production in chemical enterprises. Some problems related to 3D pipe design were studied in the paper. It involved 3D pipe reconstruction based on 2D pipe drawings and 3D pipe modeling based on parametric technique. Coordinate transformation, recognizing and matching of pipe segments, 3D parametric design were researched. The conditions to determine...
This article takes the industry cluster theory as a foundation, carries on the analysis to the present situation of industry cluster in Wuhan Metropolitan Area, proposes that the industry cluster must be developed energetically in the “the Resource Conserving and Environment Friendly Society” construction of Wuhan Metropolitan Area, and promotes the industry cluster development through the construction...
With the usage for Zhengzhou-xi'an railway passenger line. The chemical and physical properties of typical loess, the granulometric composition, The variation of liquid and plastic limit, compaction characteristics, strength and its major influencing factors of improved-loess were studied in lab. Through experiments some results were obtained. The Results show that plasticity index of the improved-loess...
Ionic soil stabilizer was used to reinforce expansive soil and improve its working performance. 4 groups of stabilized soil with different mixture proportion were designed to investigate the effects of improvement. The expansibility and strength of stabilized soils were studied through a series of tests. The chemical composition, cation exchange capacity, microstructure and BET surface area were tested...
The research was done in the rotary dryer. It included variations of hot air temperature of entrance to the rotary dryer, moisture content of materials, rotational speed and inclination. The experiment indicates that rotational speed directly interferes with retention period of materials in the rotary dryer. Hot air temperature and moisture content of materials also interfere with drying rate of materials.
In this paper, Fourier Transform Infrared Spectroscopy (FTIR) combined with feature extraction was used to study unzymic and zymic Pu-er tea for different storage years, including 6 kinds of zymic tea and 2 kinds of unzymic tea. The result indicated that the absorption peaks of unzymic and zymic Pu-er tea had the tendency to decrease while the storage times prolonged. Compared to the tea for 1 year,...
Aimed at the bearing outer ring of planetary gear in planetary transmission, the failure mechanism of wear between the planet gear bearing and thrust washer was investigated. The reasons for its failure and ways to reduce wear were also studied. A typical wear failure of bearing outer ring was analyzed in terms of the morphology observation with scanning electron microscopy (SEM), the metallographic...
Nanoparticles of Cobalt-Manganese oxides were prepared by chemical co-precipitation method. The samples were heated at 400, 600 and 800ºC. The average particle size was determined from the X-ray line broadening. The diffractogram was compared with JCPDS data to identify the crystallographic phase and cubic structure of the particles. The FTIR studies have been used to confirm the metal oxide formation...
Objective To establish a rapid identification method for electrolyte material adulteration in raw milk, and was used for inspect raw milk. Methods Through the chromogenic reaction with specific chemical reagents, the adulterated electrolyte materials such as salt, nitrite, nitrate, sulfate, sodium thiocyanate, alkali were identified qualitatively. Results The method of inspection electrolyte material...
Two novel acid mucopolysaccharides were isolated from the viscera of Haliotis discus hannai, which were cultivated in Jiaonan county Shandong Province, by protease-hydrolysis combing CPC precipitated and purified to homogeneity by DEAE 52 and Sephacryl-S 200.The acid polysaccharides obtained, named as AVAP I and AVAP II, have an average molecular weight (MW) of 10.9 KD and 32.5 KD determined by HPLC...
In this paper, we degradated Methylene Blue, Naphthol Green B, Acidic Chrome Blue K, Fuchsin Acid and Malachite Green with their aqueous solution by AgCl as the photocatalyst. The result show that, five organic dyes were decolorized completely in 30 minutes with the UV light was filtered. The color of decolorized solutions didn't change after placing 24h. Compared the degradation results with TiO2...
Four water-soluble polysaccharides named as SBP-11, SBP-12, SBP-13 and SBP-14 were obtained from Scutellaria barbata by defatting, boiling water extraction, deproteinating, decoloration and DEAE-52 chromatography purificaton. The carbohydrate content of SBP-11, SBP-12, SBP-13 and SBP-14 were 90.24%, 88.56%, 86.42% and 85.23%, respectively. SBP11 with molecular weight (MW) 1.8×104 D was composed of...
Experiments were carried out to study the process of sulphur dioxide capture with cement raw meals, and effects of sulphur evaporation (i.e. the captured sulphur in the raw meal evaporates into SO2 at a calcination temperature) on the efficiency such a process. In the study, four samples of raw meals with various ingredients were prepared; with a combined application of DSC-TGA-FTIR, the amount /degree...
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