As the richest polysaccharide resource in the nature, cellulose has a great development and utilization value. An in-depth research into cellulase is the prerequisite linchpin to the development and utilization of cellulose. Therefore, this paper conducts a comprehensive summary and analysis of the classification,...

Response Surface Methodology (RSM) is employed to optimize the polysaccharides extraction technique of Catathelasma ventricosum. This experiment adopts extraction temperature, extraction time and feed liquid ratio as the influencing factors. The polysaccharides extraction amount of Catathelasma ventricosum...

Theahoroacetic acid method under the alkaline condition is adopted to conduct carboxymethylation modification of catathelasmaventricosum polysaccharides (CVPs) to obtain carboxymethylationcatathelasmaventricosumpolysaccharides (cCVPs). In order to improve the acquiring rate (A) and degree of substitution...

Tributyl phosphate (TBP) is a popular neutral organophosphorus extractant, but its high concentration may result in severe corrosion of equipment. In this study, lithium was extracted using a novel system comprising N,N-(2-ethylhexyl)-3-oxobutanamide/TBP/sulfonated kerosene/FeCl3. A series of saturated...

The objective of this study was to identify Vibrio parahaemolyticus by HPLC, a simple, rapid, and reliable HPLC method. For the HPLC methods, an established for the fingerprints of Vibrio parahaemolyticus was performed on Strict extraction and reversed-phase HPLC conditions. An Agilent C18(4. 6 mm ×25...

A chemiluminescence enzyme-linked immunosorbent assay (CLEIA) with enhanced chemiluminescent was developed for the detection of deoxynivalenol (DON) in grain sorghum. Assay conditions, including concentrations of antibody and enzyme conjugate, Na+ (NaCl), organic solvent (methyl alcohol) and pH were...

An indirect competitive chemiluminescence enzyme immunoassay (CLEIA) for detecting aflatoxin M1 (AFM1) was developed. In the experimentation, antigen coated concentration, antibody dilution proportion, pH value and ionic concentration of the buffer were optimized to obtain the best reaction condition....

M31 block of sandstone reservoirs, with strong heterogeneity and poor physical property, belongs to ultra-low permeability reservoirs, and the reservoir permeability is around 9mD. The clay mineral content exceeds 5%, and the daily water capacity can't meet the requirements of injection allocation. Reservoir...

The mechanism of the catalysts for electro-catalysis of formic acid fuel cell is introduced,the recent advances of the Platinum(Pt)-based anode catalysis and the influence of the catalytic activity of formic acid fuel cells are analyzed, providing direction of selecting the potential Pt-based anode catalysts...

Amphiphilic polymer of N-benzyl-N-hexylacrylamide terpolymer were synthesized using free radical micellar polymerization method. Apparent viscosity, fluorescent probe and DLS was employed to study the aggregation behavior of P(AM-NaA-BHAM). The critical aggregation concentration (CAC) of P(AM-NaA-BHAM)...

In this research, a novel and facile method for preparing organic-inorganic hybrid microspheres was developed by a synergy of membrane emulsification and biomimetic mineralization. The gelatin solution (water phase) was extruded through a Shirasu Porous Glass (SPG) membrane, and mixed with the liquid...

The Polypropylene samples were molded by novel hydraulic vibration injection molding machine. The effects of vibration amplitude and frequency on physical and mechanical properties of PP and power consumption in the plasticizing process were studied. The results show that in the case of imposing vibration...

In order to study the change principle of development biddingafter polymer flooding,the coefficient of drag and residual resistance factorare measured by flow test, and the reasonable injection rate is obtained by the injectability evaluation experiment.Oil displacement experiment is carried out in different...

Plants initiate lipid peroxidation or accumulate proteins to repair cell membrane damage caused by low temperatures. However, a stationary low temperature simulation cannot accurately explain plant tolerance to naturally low outside temperatures. Our study showed that there was a strong negative correlation...

Jute is the second most important fiber in the world, which is easy to grow on all types of soil from clay to sandy loam. The popularity of jute is attributable to its abundant and cheapness, and jute fiber is mainly used in the manufacture of coarse fabrics like bags, hessian, sacking, canvas and twines....

Slightly Alkaline-Surfactant-Polymer flooding in the development process of the second oil reservoir of Daqing Oilfield had strong injection and production capability and high production rate, but dynamic response and adjustment method of each well group in different effective stages had differences....

For the question of BS11 surfactant's poor deliquescence into consideration, the hydrophilic structural of amphibious surfactant is changed and the new kind of hydroxyl sulphonate betaine surfactant BS13 is developed. We researched that the interfacial tension,IFT, between the sewage solution of the...

Nanocrystalline ZSM-5 can be used as catalysts or catalyst supports,and it has higher catalytic efficiency compared with micro-sized ZSM-5 zeolite because of its large specific surface area,so it attracted wide attention.This paper mainly discusses the hydrothermal synthesis of nanocrystalline ZSM-5.Aluminium...

A field trial with 2 kinds of humic acid fertilizers (i.e., humic acid and weathered coal) being added to the balance use of nitrogenous, phosphorus and potassium fertilizers for 3 years was carried out to test effects of tea's yield, nutritional quality and soil fertility in a tea garden. And 4 treatments...

The stress relaxation behavior and creep rupture property of GH4145 alloy were studied. The results show that GH4145 alloy has good resistance to stress relaxation. During the stress relaxation test at 566 ºC, the coarsening rate of secondary ' particles was very slow and the hardness of the alloy increased...

Anodizing is a surface treatment method and this is the first to report research on anodizing on Al-B4C composite. The growth of anodic alumina oxide was conducted on Al-B4C composite in cost-effective sulfuric acid electrolyte. In this paper, we have discussed the effect order of anodizing voltage,...

As part of a study on flight safety, this article introduces the profile of the Chinese civil aircraft hard landing primarily. And then, discusses the special circumstance of the hard landing through an analysis of some flight incident, which needs to pay special attention. The data in the flight data...

In order to solve some nonstandard and imprecise problems of non-formal methods, the formalization method based on strict mathematical is put forward software architecture of formalization not only can clearly describe the software architecture style, and makes design of architecture easy to understand...

Based on investigation data on Cu in bottom waters in Jiaozhou Bay in July and October 1984, we analyzed the content, pollution source and sedimentation process of Cu. Results showed that Cu contents in bottom waters were in July and October 1984 were 0.13-2.97 g L-1 and 0.40-0.61 g L-1, respectively,...

Based on investigation data on Cu in surface and bottom waters, we analyzed the horizontal and seasonal variations of Cu in waters in the bay mouth of Jiaozhou Bay, eastern China in 1984. Results showed that, the seasonal variations of Cu contents in surface and bottom waters were consist that Cu contents...

This paper analyzed the contents, horizontal distributions, sources and spreading process of Pb in Jiaozhou Bay, China based on investigation data on Pb in surface waters in 1985. Results showed that Pb contents were 11.4-42.8 g L-1, and were confirmed with Grade IV in according to Chinese Sea Water...

Index weight is determined in this paper based on the method of entropy weight, and the evaluation system of the low carbon economy development level on Huludao is built, the comprehensive evaluation index of low carbon economy development level on Huludao is calculated from 2005 to 2014, and the results...

The scientific and reasonable construction of eco-corridors between the nature reserves will be helpful in eliminating the habitat isolation and alleviating the negative effect of landscape fragmentation towards bio-diversity and ecological security. Focusing on the nature reserves in Northeast China,...

This paper is aimed at improving the LCA method of carbon emissions on construction. Because when using the LCA method for computing carbon emissions of the construction, low-load operating time and quitting time of construction machinery are calculated as normal operating time. So we collected 30 groups...