A supramolecular guest copolymer (PNAP-co-PAM) based on naphthol-containing monomer (NAP) and acrylamide was synthesized via Atom Transfer Radical Polymerization. The structure of supramolecular guest copolymer was characterized by NMR and GPC. And the self-assembly behavior of supramolecular guest copolymer...

Objective: To study the genetic problems of powdery mildew resistance gene in tobacco. Method: after tobacco powdery mildew resistant variety and susceptible variety provided by a greenhouse during May 2015~ May 2016 were selected as the research object, to build a genetic model, genetic laws of resistance...

At the present stage, with the continuous deepening of urbanization of China, the urban population increases day by day. As a result, water demand and urban sewage discharge also grow. Nowadays, some factories in peri-urban areas violate laws to discharge wastewater, which greatly threatens our water...

In the construction industry, the construction quality and safety attract a widespread attention, and such problems are also critical in this industry. The acceleration of urbanization in our country results in ever-increasing construction problems, among which crack and leakage are more common. Thus,...

In recent years, plastic film mulching in our country has been widely applied to agriculture and well promote the development of agricultural industry. However, the residual pollution of plastic film mulching affects the better development of agriculture, because when the age limit of plastic film mulching...

A field experiment was conducted to investigate the single and combined of lead (Pb), cadmium (Cd), and cooper (Cu) on the growth and development of rice plants and the uptake of these heavy metals by rice. The results revealed that the growth and development of rice plants were more affected by combined...

The Alkali/Surfactant/Polymer formulation is selected based on surfactant solubility tests, phase behavior experiments, IFT measurements, polymer viscosity measurements and alkali/surfactant/polymer compatibility tests. Ultralow IFT (

In this paper, Effect of different contents of Ce on the Mechanical Properties of ZK20 magnesium alloy and thermal deformation behavior, through the use of room temperature tensile and compression test thermal simulation, analysis Ce element is present in the form of ZK20 magnesium alloy and its alloys...

In this paper, Effect of different contents of Ce on ZK20 magnesium alloy by conventional metallographic, X-ray, SEM, XRD, analysis of Ce element exists in the form of ZK20 magnesium alloy and microstructure of action the results show that: in the experimental range (0% ~ 0.68%Ce (mass fraction)), with...

Membrane bioreactor (MBR) technology has currently been widely researched and used in water treatment field. In order to further expand the application fields and control membrane fouling problem of MBR, powdered activated carbon-membrane bioreactor (PAC-MBR) combined technology has become a study hotspot...

Consideration the effects of surface tension on the elastic field of solid material has applications in several modern problems in solid mechanics. This paper proposes an application of surface elasticity theory in the analysis of contact problem at nanoscale. The Fourier integral transform method is...

Cancer stem cells (CSCs) have emerged as a population of cells that plays a vital role in recurrence of metastatic cancer, particularly resistant to chemotherapy and radiotherapy. In this article, we will discuss the correlation of CSCs with tumor immunology, microenvironment, long noncoding RNAs (lncRNAs)...

The purification effect of the blow wash method, low thermal air blow wash method, vacuum method and alcohol cleaning + blow wash method for helium mass-spectrometer back pressure leak detection were researched and compared. It is found that these four purification craft will not accelerate the helium...

Concrete is one of the important materials in engineering construction. The uniaxial compression experiment reflects its bearing capacity and deformation performance, which is an important method for concrete material properties research. In this paper, the traditional uniaxial compression experiment...

COD standard discharge of wastewater in offshore oilfields is an important part of oilfield wastewater treatment. The polymer-contained oily wastewater from oilfields in Bohai Sea was taken as the object. Combining with the wastewater treatment experiments, the major composition of COD as oils, polymer...

The curing reaction characteristics of modified amine-epoxy and epoxy asphalt system under different heating rates were analyzed by differential scanning calorimetry (DSC). The relationship between curing degree and activation energy during the curing reaction is studied. The Kissinger equation was used...

A series of aryl-substituted pyrazine derivatives, as well as their s-triazine analogues, have been synthesized. For the three-branched compounds, the pyrazine derivatives show strong emission, while its s-triazine analogue TSTA shows too weak emission to be detected. Furthermore, the two-branched pyrazine...

The exposures of aquatic organisms to pollutants are usually pulses yet the exposure concentrations in the standard toxicity tests are constant. It raises a question that whether these standard tests include the effects of pulse exposure Therefore, 24-hour pulse exposure to 4 heavy metal ions (Cd2+ Cr6+...

In terms of domestic, road surface is divided into cement concrete and pavement of asphalt concrete. Asphalt concrete pavement has the characteristics of fast repair, low noise. So is a good use of asphalt pavement quality of road, but if you want to play to the performance of the asphalt surface, should...

Compared with conventional combustion, catalytic combustion as a developing technology could make the pollutants emissions to zero. The experimental studies and theoretical analysis have been involved in this essay to study on if catalytic combustion furnace can burn overglaze color.In this paper, by...

The microstructure and associated formation mechanisms of deformation twins (DTs) in Cu-Nb alloy prepared by mechanical alloying (MA) at room temperature have been investigated by transmission electron microscope (TEM) and high-resolution TEM (HRTEM) observations. The results show that DTs form in Cu...

A Ni-based alloy gradient coating with four layers of the different composition was produced on surface of Cu alloy substrate using YAG laser. The microstructure, anti-wear and anti-heat shock properties of the gradient coating were studied by means of analysis techniques. The results show that there...

Parabens extracted from five kinds of daily cosmetics by ultrasonic extraction were detected by high performance liquid chromatography. The optimal extraction solvent was dichloromethane. And the extraction time was 15 min. The linear range was from 0.01 to 50.0 mg/L. Parabens were found in 3 kinds of...

Using Fe55 spherical fluxed alloy power as the raw material, a Fe-based alloy coating on the surface of steel was deposited by a semiconductor laser under the optimal process parameters. The microstructure and properties of the samples were analyzed by means of OM, SEM, XRD, the micro-hardness and frictional...

The ZrO2 particle reinforced Fe60 alloy coatings were deposited on the surface of steel by laser using Fe60 self-fluxing spherical alloy powder adding mass fraction of 0.1%, 0.3%, 0.5%, 0.7%, 0.9% content ZrO2 powder. The structure and hardness of the samples were analyzed by the means of OM SEM XRD...

In this article, a modified approach for drawing force estimation of bi-metallic composite pipe forming is proposed in the light of the results of FEM simulation, the assumptions of plane strain and elastic-perfectly plastic material model are employed additionally. The modified approach for drawing...

The downhole throttle technology is wildly used in Sulige gas field which was low voltage, low yield. To evaluate the service performance of throttle, property analysis of throttle rubber material under high temperature and high pressure in Sulige gas field was researched in this paper. An autoclave...

The preparation and characterization of composites of MgSO4•7H2O compounded with KAl(SO4)2•12H2O for thermal storage are reported in the present article. The co-melting method is employed to conduct the preparation. The thermal properties of the composites are studied. The results show that: the phenomenon...

In order to improve the service life of weapons, an erosion additives of urea formaldehyde(UF) resin matrix composite particle is prepared by using in-situ polymerization method. The morphology composite particle is represented through scanning electron microscope, and the thermal analysis method is...

The cordierite powders were successfully synthesized by a solid state reaction method, by using raw materials of high purity powder of MgO, Al2O3 and SiO2, mixed according to the stoichiometric ratio of cordierite. The cordierite powders were prepared under different manufacturing conditions and the...

Experimental analysis of frequency on tensile-compressive fretting fatigue behaviour of Al-Zn-Mg alloy was studied in this paper. Effect of frequency on fretting fatigue lives, damage characterization and fretting fatigue fractures of Al-Zn-Mg alloy were researched under different frequencies. Factors...

The surface modification of the tourmaline powder with acryloyl chloride was studied to prepare the polymerizable organic tourmaline. The experimental results showed that the surface of modified tourmaline had a better hydrophobicity compared with unmodified tourmaline when the mass ratio of acryloyl...

The purpose of this study was to observe the effect of β-amyloid protein injury on intracellular calcium homeostasis in Hep-1 cells. Aβ25-35 was used to build the Hep-1 cell model of AD. Intracellular Calcium measurements was performed by incubation with the calcium indicator probe and then observed...

Based on investigation data on Pb in bottom waters in Jiaozhou Bay in May, September and October 1983, we analyzed the horizontal distribution of Pb, and reveal the mechanism of high sedimentation of Pb. Results showed that the horizontal distributions of Pb in May, September and October 1983 were totally...

Based on investigation data on Pb in bottom waters in Jiaozhou Bay during 1979-1982, we analyzed the horizontal distribution features of Pb. Results showed that there were high value regions in bottom waters in the center of the bay mouth, and there were three horizontal distribution features of Pb contents...

Based on investigation data on Pb in bottom waters in Jiaozhou Bay in different months during 1979-1983, we analyzed the seasonal variations of Pb contents and pollution levels. Results showed that the pollution levels during 1979-1983 were light/moderate, and the pollution levels in the bay mouth were...

The oxidation resistance is one of the most important properties of refractory materials. China national standard GB/T 32329-2015, which title is "Test method for oxidation resistance of oxynitride materials—non-isothermal oxidation", provide a standard characterizing method for oxidation resistance....

The oil development of the Triassic Yanchang Formation Chang8 section of the fractured reservoir in the south of Ordos Basin Tianhuan Syncline has used horizontal determinant deployment well pattern. It is common for fracturing wells communicate with neighbouring wells, and leads to substantial decline...

Thermoelectric materials with high figure of merit (zT) are very important to heat engines in the harvesting of waste heat. Silicon nanowire have attracted considerable attention due to its enhanced zT as compared to its bulk counterpart. This paper reports the transient transport behaviors of the thermoelectric...

Fluoroalkyl-containing silica nanoparticles were prepared and characterized by a combination of IR and TEM analysis. The obtained silica nanoparticles with an average diameter 40 nm were coated onto concrete. Surface properties of the coated concrete were characterized by water contact angle (WCA) and...

The pristine LiNi0.5Co0.2Mn0.3O2 microspheres (P-NCM523) have been synthesized by a solid state method. To improve the lithium storage performances, Li2MoO4 layer has been coated on the surface of P-NCM523 by the facile reaction between lithium residue and H3PO4.12MoO3.24H2O. The Li2MoO4 coating can...

Currently, TiVN and TiVCN coating are not prevailing in the literature. Only a few publications are revealed with basic properties. In this study, the TiVN and TiVCN coatings are deposited by using cathodic arc deposition system with Ti and TiV alloy dual targets. The result shows that V and C addition...

SCR denitration reductant's preparation system is the supporting system in heat-engine plant producing reducing agent. Its safety, reliability and stability are crucial. Based on the aspects of technology and economy, this paper makes a detailed comparison and selection of three kinds of denitration...

Carbohydrates are a class of important compounds widely occurring in nature and are the main energy source required for all living organisms. Based on the variation of glycosidic bonds in carbohydrates, they can be divided into O-glycosides, C-glycosides, thioglycosides, and other types, among which...

In this study, a kind of polycarboxylate superplasticizer used in high performance self-compacting concrete was synthesised. The examined properties included workability, T500, compressive strength,etc. Workability of the fresh concrete was determined by using both the slump-flow test. The results showed...

This paper presented a new kind of Viscosity Modifying Admixture (VMA). Adsorption and rheological properties was studied on this new kind of VMA and Cellulose hydroxypropyl methyl ether Hyprolose. The results show that adsorption capacity of this new viscosity modifying admixture is greater than cellulose...

In response to the global call of environmental protection, a kind of environment-friendly air circulation refrigeration system is analyzed . Working principle of air cycle refrigeration system is introduced.The advantages of air refrigeration system are summarized, and main research achievements and...

Three recycled concrete beams with the different gradation of coarse aggregates under concentrated load are presented. By using fractal theory, the distribution of the surface crack growth of the recycled concrete beams is analyzed. The results indicate that the surface crack of three recycled concrete...

Rutile TiO2 white pigment was produced by using low concentration industrial TiOSO4 solution as raw material via short sulfate process through self-generated seeded thermal hydrolysis route. The aging time and F value have significantly influenced the structure and pigment properties of rutile TiO2 white...

Closed-open cross wedge rolling(CWR) is a kind of advanced precision forming technology, which can effectively reduce or even eliminate the concave. The workpiece is processed from the shaft end to the middle by the rolls first, and then machined by open CWR. An auto pump shaft is taken as the research...

To study the method of measuring cytochrome P450 (CYP450) in fish liver subcelluar fractions ( S9 and microsomes). Fish liver microsome was obtained by differential velocity centrifugation, the concentration of protein of liver microsome was measured by Bradford, and the activity of mice CYP450 was detected...

In order to investigate the effect of herb of glabrous sarcandra solution on human prostate cancer DU-145 cells PI3K / m TOR signal transduction pathway, the paper uses method of cell culture, with Sarcandrae solution with different concentrations of 48h, the impact on DU-145 cells were detected by MTT...

Treatment of toxic organic wastewater biorefractory due to lack of effective treatment methods became the difficulties in the field of water, humans and the environment caused great harm. In this paper, lead dioxide doped vanadium and titanium thin films were characterized and Photocatalytic. On this...

Toluene, methyl ethyl phthalate amines, methyl ethyl ketone and ethyl acetate are used in China more vinegar several solvents, in the course will emit large amounts of volatile organic gases, serious harm to human health and the environment, it must be recycled or disposed of these gases. In this paper,...

Our country is the largest producer of wheat and in the processing of wheat, the yield of bran is nearly 20% of wheat processing capacity, the only by-product of wheat processing to produce each year - the bran as high as more than 20 million t, which is a big resources. The main contents of this part...

Wheat flour were prepared to make aqueous pentosan and alkali soluble pentosan and then they were added to wheat flour in different proportions to conduct bread baking experiments to study its effect on the quality of the bread baking.

Application of the principle of ultrasonic technology in traditional Chinese medicine extraction methods and the current major application for a review presentation, noted that ultrasonic extraction, their applications in medicine production, suggesting that ultrasound technology in traditional Chinese...

Gastrointestinal dysfunction is a multi-organ failure dysfunction syndrome, and gastrointestinal injury is the cause of organ failure caused by the River. Clinical symptoms in patients with gastrointestinal failure occurs, treatment more difficult, have a higher mortality rate, more difficult to treat...

Based on 72 SD male rats were intermittent hypoxia training, observe its quiet state three hours after, immediately after exercise, and exercise changes the activity of SDH in skeletal muscle.Found that in the condition of the three, the rat skeletal muscle SDH has obvious changes, and presents the downward...

Objective: To study the chronic intermittent hypoxia training on rat myocardial line grain of ATP content and Na+, K+ ATPase and the influence of Ca2+, magnesium 2+ATPase. Methods: 32 male Wistar rats as the research object, according to the low oxygen training program can be divided into intermittent...

Observe the deer melon polypeptide injection combined with aerobic exercise to glucocorticoids effect for the treatment of osteoporosis. Methods: selection of wenshan city, the first affiliated hospital of bone surgery in March 2013-November 2014 to receive glucocorticoids sex of osteoporosis patients...

Development of the construction industry, driven by the progress of decoration industry, building materials technology applications at the same time gradually developed. As the market's prosperity and people's diverse needs, new materials, new technology and new technology, innovation and research become...