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The continuous model is introduced, and the nonlinear partial differential equations of taut-slack mooring line system are transferred to nonlinear algebraic equations through tanh method, and four solitary solutions are obtained further. At the same time, to express the results clearly, the curve surfaces of strains, displacements, and tension are plotted. The results show that there are four different solutions in the system. With the pretension increasing, the tension changes from one solitary solution to snap tension, and when the pretension is increased further, the curve converts to continuous line, until straight line, which is corresponding to the taut mooring line. In the process of increasing of pretension, the mooring line transfers from slack to taut, accompanied with tension skipping, which is reduced by the system parameters, and different combination of parameters may introduce different tension in line, and the uncertainty may cause the breakage of mooring system. The results have an agreement with experiment, which shows that the calculating method in this paper may be believable and feasible. This work may provide reference for design of mooring system.

The geoelectrochemical-extraction measurement is a ore prospecting method of deep-penetrating geochemistry, by using the element receptors to extract the mobile metal ions from the soil under the artificial electric field to look for the hidden ore deposit. The study of using the geoelectrochemical-extraction measurement method to look for blind lead-zinc ore deposit has been carried out in the Fuzichong lead-zinc polymetallic ore deposit and Panlong lead-zinc ore deposit of Guangxi, which resulted in the clearly geoelectrochemical anormaly above the known ore bodies. And the ore prospecting forecast conducted in the unknown ore regions shows that it is feasible to use the geoelectrochemical-extraction measurement method to expore the deep hidden lead-zinc ore deposits.

The Qinling orogenic belt (QOB) located between the North China Craton (NCC) and the South China Craton (SCC) is composed of the Northern Qinling Belt (NQB) and the Southern Qinling Belt (SQB). This study presents new geochemical data, zircon U-Pb ages and Hf isotopes from two rocks from the Qinling complex in the NQB. LA-ICP-MS zircon U-Pb dating results suggest that the Qinling complex was formed in early Neoproterozoic and experienced the early Paleozoic metamorphism. High εHf(t) values of 9.0-12.0 for the early Paleozoic zircons indicated that there is mantle-derived magma intruding into the Qinling complex in the early Paleozoic.

In this paper, Taken the methyl hydroxypropyl acrylate (HPMA) as functional monomer, a novel poly (butyl acrylate)-poly (methyl methacrylate-methyl hydroxypropyl acrylate) (PBA-P(MMA-HPMA)) core-shell latex particles were synthesized by the method of pre-emulsion semi-continuous seeded emulsion polymerization. The structure and morphology of core-shell latex particles were characterized by the way of laser particle size analyzer, transmission electron microscope (TEM), fourier transform infrared spectrometer (FTIR), nonaqueous acid-base titration, differential scanning calorimetry (DSC). Experimental results showed that the average size of PBA-P(MMA-HPMA) core-shell latex particles was 340nm and the average size of PBA core latex particles was 270nm. The functional monomer HPMA really participated in shell layer copolymerization, when the dosage of HPMA was 8% of shell monomer, HPMA content in the shell was the largest and reached 2.16%. Tg value of the copolymer P(MMA-HPMA) was firstly increased and then reduced with the increasing of HPMA content in shell.

The core-shell structure copolymer of PBA/PS was prepared using pre-emulsion and semi-continues polymerization process. The particle size of core-shell latex and the St conversion of shell monomer were affected by emulsifier, initiator, pH and temperature etc. Meanwhile, the laser particle size analyzer, transmission electron microscope and other test methods were utilized to study latex particle average particle size, size distribution and morphological structure, respectively. The kinetics of polymerization was investigated. Well-defined core-shell structure and narrow particle sizedistribution could be achieved under starved conditions of monomer feeding. By the means of TEM found that PBA/PS latex particles had clearly core/shell morphology.

A method for getting high quality Pb isotope ratio analysis using 207Pb-204Pb double spike method has been developed at Scripps Institution of Oceanography (SIO), which corrected the mass fractionation effects during small amount Pb loading isotopic analysis by thermal ionization mass spectrometry (TIMS), with the minimum amount of 8×10-9g Pb per load. The double spike method effectively improves in both precision and accuracy without recourse to excessively rigorous loading or run conditions. Over a period of fifteen months accuracy double spike tested for Pb standard SRM981 in SIO isotope laboratory, an external precision of ±0.0038、±0.0040、±0.0122 (2σ, n=53) was obtained for 206Pb/204Pb, 207 Pb/204Pb and 208Pb/204Pb rations, although the small amount Pb loading, which present a same excellent accuracy and external precision as other laboratories reported. Therefore, this method is superior to precise and accurate isotope analyses of low level Pb concentration geological and environmental samples, and will be a highly powerful tool in the future of earth sciences and environmental sciences.

In order to get the requirements of workability and basic mechanical properties of self-compacting lightweight aggregate concrete, fixed sand and gravel volume method and overall calculation method are used to mix design. Slump flow and L-box tests are used to test the workability of self-compacting lightweight aggregate concrete, the strength increasing and the final value are tested by compression tests. For contrast, a set of common concrete is selected to compare the differences of efficiency. Tests indicated that the 5 groups of self-compacting lightweight aggregate concrete can get the requirements of workability and compressive strength, and the structure efficiency can be significantly higher than normal concrete.

In order to get the workability requirements of the preparation of self-compacting lightweight aggregate concrete, fixed sand and gravel volume method and overall calculation method are used in this article to calculate the mix of SCLC30. Orthogonal table L9 (34) is used for test design. In order to analysis the factors of gravel dosage coefficient, sand dosage coefficient, fly ash replace ratio and superplasticizer usage has great influence on concrete by slump flow, L-box and steel-ring tests. The result shows that the groups of 1,3,7,8 have the best workability in 9 groups. On the basis of analysis, gravel coefficient of 0.5, sand coefficient of 0.42, fly ash of 30% and superplasticizer of 1.5% are selected for the optimal mix, so this group has an excellent workability.

Slag corrosion resistance behavior of MgO-ZrO2 refractory was investigated in this work. The results indicated that in the non-oriented electric steel slag system with a high ratio of calcia to silica, the slag resistance behavior of MgO-ZrO2 composite could be described as follows: the ZrO2 reacts with CaO forming the calcium zirconate compound which is densification encapsulating periclase lay. However, in the oriented electric steel slag system with a high concentration of silica and the low ratio value of calcia to silica, the slag corrosion resistance behavior of MgO-ZrO2 composite is different. The ZrO2 would react with CaO forming the calcium zirconate and simultaneously, one more product C2S as well. C2S has double response of strength and could increase corrosion resistance performance by blinding pore and thickening slag viscosity. Therefore, it is expected to be the major reason for the enhanced corrosion resistance behavior observed for MgO-ZrO2 refractory.

The method which is based on industrial fieldbus of Modbus protocol for the surface plates flatness measurement and control system is presented in this paper. The systerm is according to the evaluation rule of diagonal stationing, and uses the evaluation method of minimal conditions principle. The systerm uses SOC system level MCU as the core, and through multi-channel eddy current displacement sensor to collect the data of the flat. PC uses LabVIEW design man-machine interface, and uses the access database technology to realize the collection of the flat data and the management of the history gathering information.The whole system design is simple, function strong stability and high ratio, and has been used on one production line already.

Based on the test results of 448 sets of concrete mixtures (which have been divided into three groups), a concrete strength prediction model has been established using a stepwise regression method. The kinds and qualities of raw materials, which has a total comes to 17 factors, has been considered as the independent variables. It has been found that the forecast precision is not always improving along with the increase of independent variable number, so one or more factors may be "redundant" and should be reducted. A rough sets (RS) method has been adopted for the variable reduction, with different parameter combinations are tested. The results has shown that in each cases the forecast precision of the model are higher than the Bowromi formula’s. Some regularities for the parameters’ selections are existed, but not all the parameters can be given positively, so a trial process is still necessary.

According to industry and agriculture domain which applied temperature sensor need calibration. It is proposed the temperature calibration system design which based on the environmental of the LabVIEW programming to complete the parameter calibration and characteristics analysis of temperature sensor. The design communicates to serial bus by VISA programming interface to complete setting the temperature of the FLUKE9171 temperature calibrator, and get the temperature informations of the Multi-channel DS18B20 temperature sensor. It demarcates the collected data by using the method of the curve fitting, to complete the accurate calibration of the the temperature which collected by temperature sensor. The whole system design is parameters custom, intelligent, self-adaption, which has been applied on a sensor calibration system.

Polyurethane elastomers (PUE) were prepared by casting method using the prepolymer and the chain extender. In here, the prepolymer synthesized by using poly(tetramethylene glycol ether) (PTMG) and toluene diisocyanate (TDI), the chain extender was a mixture of 3,5-dimetylthio toluene diamine (E-300) and triethanolamine. The effects of the NCO concentration in prepolymer, the molar ratio of E-300/triethanolamine, and the chain extension coefficient of NCO/NH2 on the mechanical properties of the prepared PUE were studied. The results showed that the prepared PUE possesses excellent mechanical properties which can meet the drum scraper’s application requirements when the NCO concentration in prepolymer was 5.06% and the molar ratio of composite chain extender was 0.92/0.08.

For automated testing system to manage harvesting data requirements, the paper discusses the method of using the tool of LabSQL database access to visit access database on LabVIEW programming circumstances, and gives an example of specific database management in data collection of application. The system communicated with fieldbus and based on VISA programming interface, acquisition to obtain multi-channel sensor signals. Reusing database technology to realize data query, backup, import management functions for the detection system collection income amount of data convenient and effective. This system has been applied in a automated testing system.

The micro-model, which the brick and the mortar model are separated, is used to analyze masonry. Meanwhile, the mortar is divided into three layers along the thickness direction to obtain the internal mechanical behavior of mortar, and the vertical mortar joint strength is taken as 50% strength of the horizontal mortar joint for considering the poor quality of vertical mortar joint. The compressive ultimate load and failure mode of masonry taken from the finite element analysis result, especially the vertical cracks throughout all bricks and mortar and change of brick and mortar strain, are in agreement with the experimental results. It shows that the micro-model and method adopted in paper are able to effectively apply in nonlinear structural analysis for masonry.

With wide applications of FRP in civil engineering, it is necessary to study the durability of FRP reinforced concrete structure. Based on the related research both at home and abroad, the factors affecting durability of FRP reinforced concrete structures and the corresponding improvements have been put forward by analyzing the durability of concrete, FRP materials and reinforced structures, respectively.

In this paper, a series of polyurethane elastomers (PUE) were prepared employing casting method using toluene diisocyanate (TDI), hydroxy-terminated butadiene-acrylonitrile copolymer(HTBN) and polytetrahydrofuran glycol (PTMG) as the main raw materials, and using 2,4- and 2,6- dimethylthioaromatic diamine (DMTDA) as a chain extender. The effects of the content of NCO in PUE (NCO%), mass ratio of HTBN/PTMG, molecular weight of PTMG, dosage of chain extender and heat treatment on the mechanical properties of PUE were studied. The results showed that the lower molecular weight of PTMG and the higher heat treatment temperature were both favorable for increasing the mechanical properties of PUE. When the mass ratio of HTBN/PTMG was 35:65, NCO% was 6.0%, molar ratio of NCO/NH2 was 1.20 and heat treatment time was 2h at 115 , the mechanical properties of PUE were best.

In this paper, a novel poly(butyl methacry1ate)/poly(methyl methacrylate-itaconic acid)(PBA/P(MMA-ITA)) latex particles with core/shell structure (CSR) was synthesized by the method of pre-emulsion semi-continuous seeded emulsion polymerization. The core/shell structure of CSR was characterized by TEM and confirmed that the average size of CSR particles was about 330 nm and that of PBA core was about 290 nm. The polyamide 6 (PA 6)/CSR blends (N/CSR) were prepared by the melt-blending technique, and its impact strength reached 40kJ•m-2 (more than 7 times higher than neat PA 6) when the ITA dosage was in the range of 4%~10%. The results of SEM showed that the high toughness of N/CSR blends was the result of the shear deformation of PA 6 matrix induced by cavitation of dispersed phase CSR.