The recovery of alumina from electroslag-remelting of Ti-bearing blast furnace slag has been investigated by Bayer process, XRD methods. The effects of NaOH concentration , ratio of liquid to solid, leaching time and temperature, particle size, precipitating time and temperature, calcining temperature...

Objective: To survey estrogenic activity of Environmental estrogens (EEs) pollution in Songhua River water of the second Songhua River.Methods: human breast cancer MCF-7 cell proliferation experiment were used to detect estrogenic activity of organic extracts of organic extracts from water body. Results...

Objective: To evaluate the potential hazards of organic pollutants in Jilin City Reach of the second Songhua River. Methods: organic pollutants of water was concentrated and tested by vivo experiments on rats. Results : Testis organ coefficient decreased and sperm deformity rate increased with the increase...

The effects of torrefaction on the pyrolysis of corn stalk were investigated using a thermogravimetric analyzer (TGA) and a pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The results showed that with increasing torrefaction temperature, the volatile matter and oxygen content decreased, while...

Five new acidic ionic liquids were firstly synthesized from 8-hydroxyquinoline and five kinds of acid such as H2PO4, H2SO4, CH3SO3H, TSOH, HBF4 by one-pot method. The structures of the synthesized compounds were characterized by 1H NMR, IR and MS. Acidities of the ILs was determined by Hammett acidity...

Ionic liquids (ILs) have got wide applications as solvent or catalyst for the conversion of saccharides into valuable chemicals due to their fascinating properties. However, some ILs inevitably occur in separation difficulty from products in aqueous samples since they do have notable solubility in water....

In order to reduce costs and improve the activity of catalyst in turpentine oil isomerization reaction, two solid acid catalysts (b and c) were prepared by using sulfuric acid and hydrochloric acid treated HangJin 2# clay (a), respectively. On the basis of sulfuric acid-treated HangJin 2# clay (b) as...

In order to obtain natural rubber (NR) latex-based biomaterial, the NR latex concentrate was prepared into prevulcanized natural rubber latex (SNRL) and then blended with a water dispersion of chitosan (CS) and poly(3-hydroxybutyrate) (PHB) together, with the total amount of CS and PHB is of 1, 3, 5,...

The effect of plantaricin BM-1 on the behavior of Listeria Monocytogenes in sliced brined cooked ham during refrigerated storage (4°Cand 9°C) was assessed. The combination of low storage temperature (4°C) and plantaricin can significantly reduced viable counts of L. Monocytogenes during storage (P

The flue gas emissions of thermal power units are widely concerned because of the increasingly strict environment protection requirements. This paper aims at the optimization of flue gas denitrification control for thermal power units. The research introduces the selective catalytic reduction flue gas...

Extract the total DNA of HYHI, Trp cluster were cloned by PCR according to the DNA of HYHI, the length is 7100bp. Then the gene was connect to the expression vector pZ8-1, recombinant plasmid pZ8-1-Trp cluster was obtained. The plasmid was transferred to HYHI. The positive bacteria were induced by IPTG...

In order to solve the phenomena that harsh coal mine environment will lead to coal mine monitoring image degradation, a K-fold Cross-Validation image restoration algorithm BP neural network was proposed. Firstly, the images will be blurred by Gaussian white noise. Then, the blurred image and original...

Based on the determination of the equilibrium surface tension for anionic surfactant SDS and non-ionic surfactant TrionX-100 and TrionX-114 under different concentrations, the two surfactant continuous boiling test and the SDS for the hydrolysis tests were carried out. Objective is to analyse the variation...

Eggs in the standard method for rapid detection of veterinary drug residue has not been formed, therefore, it is necessary to explore a rapid, highly effective, the total amount and qualitative method of rapid detection of antibiotic residues in eggs. Many different kinds of veterinary drugs on the market,...

Treatment of oily sludge in Changqing oilfield, originating from producer/injector well field and settling tanks of united stations, has ever been an obsession in the development of oilfield for environmental concerns. In this article, some merits of oily sludge, including salinity-resistance, shearing-resistance...

Commercial DSA anode was employed for electrochemical oxidation treatment of coking wastewater, and the effect of electrolytes, working potential, and ultraviolet irradiation were examined. An effective removal of chemical oxygen demand (COD), thiocyanate (SCN–), volatile phenol and total nitrogen (TN)...

The prokaryotic expression system was employed in order to compare the catalytic properties of L183Q mutation and wild DAHP synthase enzyme. The gene of L183Q mutation and wild DAHP synthase enzyme was cloned and expressed by pET vector system and Eco.li BL21. The specific activity of the two recombinant...

Injection of gas-carried powders by an immersed lance is among the most popular desulphurization methods in many metallurgical processes. This paper proposes a CFD algorithm to simulate the transient multiphase flow in the powder injection process, using the volume of fluid (VOF) method to calculate...

A monolithic column of molecularly imprinted polymer was prepared by an in situ polymerization method with a compound clopidogrel as the template. The molecular recognition capabilities of the prepared monolithic MIP were evaluated by separating the enantiomers. The characteristics of the column and...

Polymer flooding has already been the preferred development mode for the efficient development in offshore, aim at the conditions of the reservoirs in offshore, this paper has used two-dimensional physical model to conduct three tube parallel experiments to study the displacement efficiency of water...

By comparing the oil displacement experiment of Huading I and Haibo BI polymer surfactant based on the actual the situation of reservoir in Daqing oil field in this paper, the displacement efficiency for two kinds of polymer surfactant in different concentration and different slug were compared. In the...

Objective: To find adaptation strategies of a perennial herb Cyperus rotundus and an annual herb Setaria viridis, and evaluate their ability for the ecological restoration in the hydro-fluctuation belt in the Three Gorges reservoir area (TGR). Methods: An empirical study of photosynthesis and productivity...

In this paper, seedling of non-energy-plant Stevia rebaudiana Hemsl in greenhouse is designed as the research subject. After its plant height, fresh weight, root length, leaf number, soil moisture content and other indexes are measured, seedling Stevia is found in germination period, slow growing period...

Two types of unvegetated vertical flow constructed wetlands (UVFCWs) with zeolite and volcanic rock as composite substrates were constructed and the treatment performance for nutrient removal from modeling effluent of secondary treatment process was evaluated. The concentration of COD, NH4+-N, NO3--N,...

we investigated characteristics of soil Hg,soil gas Hg and atmospheric Hg on tomb of Ming Xianling. Xianling is the tomb of the fourth emperor Zhu Gaochi of the Ming Dynasty.Soil samples were collected for determination of mercury. Soil gas Hg and atmospheric Hg is analysed on high mercury anomalous...

The origin and character of pharmaceutical wastewater were summarized in this paper. And some popular disposal technologies used in wastewater treatment of pharmacies were introduced, such as physicochemical disposal process, bio-chemical disposal process and process of deeply oxidation at elevated temperature....

Medical waste is directly or indirectly infectious, toxic and other hazardous waste, and high-temperature steam sterilization is a widely used non-incineration technology for centralized treatment medical waste. Basing on the analysis of flow chart of medical waste high-temperature steam treatment, the...

Objective: This work aimed to investigate the accumulation of total triterpenoids, individual ganoderic acid (GA) content and expression of four important biosynthetic genes during fruiting body development in Ganoderma lucidum. Methods: Individual GA content was determined by high performance liquid...