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Fly ash, silica fume and ground steel slag are chosen to make up composite mineral admixtures. Through the orthogonal test, carbonization resistance property of High Performance Concrete (HPC) mixed with composite mineral admixtures is studied. Test results show that the carbonization resistance property of HPC can be improved with defined amount of composite mineral admixture mixed, in addition, the effect of ternary composite admixture of ground steel slag, fly ash and silica fume is more obvious than that of binary composite admixture.

Along with the development of Hainan tourism, agricultural tourist attractions is famous for its beautiful natural landscapes and unique folk customs and traditions. construction situation of tropical modern tourism agriculture in Hainan is analyzed in detail from the perspective of life experience, food and countryside, ecology protection, investigate and study, hot spring and landscape, civilization eco-village, national culture and large recreational agriculture theme park. This research summarizes and analyzes essential principles of tropical agriculture tourism planning. Considered in tropical agricultural resource utilization, ecological environment monitoring and protecting, water-saving irrigation and formula fertilization, the design thought and plan for tropical modern tourism agriculture in Hainan are expounded in this paper.

Aqueous foam jamming Device for Transport vehicle , by use of its own power system and storage devices, make the gases within the air tank filling the bubbling liquid to bubble inner the liquid storage barrel,Thus forming the top and around the vehicle for a long time a large number of floating, connected into a piece of aqueous foam base,To interfere with enemy reconnaissance and surveillance and infrared-guided, laser-guided, millimeter wave-guided and other precision-guided weapons hit,To improve the battlefield viability of transport vehicles.

This article explored the effect of natural light and ultraviolet lamp radiation on the discoloration of the green part of the 4-year bamboo by using the color analyzer and Fourier transform infrared spectrometer. The results showed that both light treatment could make the discoloration of the bamboos green part obviously, and the lightness increased, the color hue (a*) changed a little, however, the color hue (b*) had a great change, and the aberration (△E*) increased with the increasing duration. FTIR results showed that the chemical structure of the bamboos green part had a change, and the components of the lignin decreased because of the degradation, but the hydroxyl increased.

Architecture is not only the material carrier of construction technology, but also the material expression of building culture in each era. The essay explores the way of how the construction, as the material witness, embodies the differences in epoch and culture by analyzing these by time. Furthermore, the paper analyzed different era information expressed by the constructions in different times and draws the conclusion: Protection not only means a formality.

Ball mills with double inlets and outlets (BMDIO) are widely equipped in milling systems of thermal power plants because of BMDIOs’ vantage on being able to pulverize various raw coal. In this paper, dynamic characteristics of mill’s coal level were studied by pulverizing coal mechanism analysis. Furthermore, models for filled level of mill were obtained with mathematical Equations. The nonlinear, strong coupling and large lag features of BMDIO’s dynamic characteristics were demonstrated by the model for level of materiel constructed in this paper. And, the model would be become the available theory basis for the calculation of pulverized coal into furnace and design of combustion in fossil-fired thermal unit.

Looking back at the historical process of urban and architectural development, people can clearly see that the light technology and light culture synchronized with the development of cities and architecture, and they can also see what an important role that technological advances of daylight illumination have played in cities and appearance of the architecture as well as modern life. With the development of economy and improvement of the living standards of human, the landscape lighting at night has been rapidly developed, and has made brilliant achievements. In recent years, the city government attaches great importance to city lighting work, taking the construction of city lighting project as an important measure to improve and beautify the city environment. However, the problem of light pollution attendant should be worthy of attention as a serious problem

Impact of number of tooth matching to load distribution of planetary gears is mainly investigated in this paper. The entire finite element model of planetary gear trains is established so as to analyze and calculate gear stress and number of tooth matching have an impact on load distribution homogeneity of planetary gears on the rated load working conditions. A new method of number of teeth design of planetary gear trains is put forward that number of teeth of sun wheel and number of teeth of gear ring are multiples as great as numbers of planetary gears. Load uneven coefficient of the example is proposed and solved, which provides theoretical basis on carrying capacity calculation, strength analysis and calculation of fatigue life of planetary transmission.

Wind turbines consists of three key parts, namely, wind wheels (including blades, hub, etc.), cabin (including gearboxes, motors, controls, etc.) and the tower and Foundation. Wind turbine wheel is the most important part ,which is made up of blades and hubs. Blade has a good aerodynamic shape, which will produce aerodynamic in the airflow rotation, converting wind energy into mechanical energy, and then, driving the generator into electrical energy by gearbox pace. Wind turbine operates in the natural environment, their load wind turbine blades are more complex. Therefore load calculations and strength analysis for wind turbine design is very important. Wind turbine blades are core components of wind turbines, so understanding of their loads and dynamics by which the load on the wind turbine blade design is of great significance.

Based on these characteristics of dissolved oxygen control in sewage treatment aeration process, such as nonlinearity, large time delay in a timely manner and difficult to model accurately, this paper puts forward an intelligent control strategy of dissolved oxygen. First, according to feed water quality parameters and environmental factors, we build a rule-based multistage fuzzy controller to make intelligent dynamic dissolved oxygen value setting. Then the feedforward tracking and constant value control are proceed, according to error source and threshold we use fuzzy tracking, fuzzy PID separation control and compound control of the major and minor loop cascade control to stabilize the given value of dissolved oxygen. The system is fast and steady which is proved by simulation and experiment results.

The Pb–Ag–Ca alloy anode with surface passivation was applied in industrial production of zinc electrowinning. The application situation was investigated by detection and tracking more than 3 months. The results were analyzed by comparison with the data acquired from the production using the reference anodes without surface treatment. The results showed that using the anode with surface passivation can increase zinc yield, reduce Pb content in zinc product, prolong the anode life by improving the corrosion resistance, and then reduce the production costs.

low power consumption, low emissions "low carbon economy" has become a new model of economic development of countries to pursue. Traditional GDP indicator has been unable to account for changes in the situation of a country or region 's resource consumption and environmental quality , can not fully reflect the true picture of social development criteria can not adapt to a low-carbon economy. Currently measure low-carbon economy is a very effective indicator green GDP. This paper analyzes the environmental context under China's current economic development , compared to the traditional GDP, indicates the importance and necessity of green GDP , and the current problems in the form of proposals and conducted under the future .

The concentration and size distribution of Te inclusions in CdMnTe (CMT) are key factors in nuclear devices performance. High-concentration and large-size Te inclusions degrade the performance drastically, especially for electrical properties. In this paper, the Te inclusions along the axial and radial directions in CMT crystal grown by the Traveling Heater Method (THM) were revealed by Infrared Microscopic System. The size of Te inclusions is 5-17 μm and the concentration is (2.5-4.6) ×105cm-3. The Current-Voltage measurements were performed and the resistivity of the CdMnTe crystal with excess Te was in the range of 108-109Ωcm, and the correlation between the Te inclusions and resistivity was investigated. The large size (>17 μm) and high concentration (4.5 of ×105cm-3) Te inclusion decrease the resistivity of the CMT crystal seriously.

This paper presents a new method to solve the problem of speed and pressure constant value adjustment in the high-power hydraulic pumps and hydraulic motors performance test system which is based on energy recycling technology. The constant value control method is designed based on characteristic parameters of the process, including control resolution, overshoot and adjustment time. Experiments were implemented to verify the effectiveness of the proposed method. Experimental result shows that the proposed method reduced the test time by about 52.4% than before. The convergence rate of the constant value adjusting process and the test efficiency are significantly improved by the proposed method.

Time Synchronization is a key technique which synchronizes the LPs (Logic processes) of PDES (Parallel and Discrete Event Simulation). After having described shortcomings of the existing algorithms for Time Synchronization, this thesis mainly proposes a new approach based on time dams. It introduces the concept of Time Dams Algorithm and presents its realization. Moreover, the performance of TD (Time Dams) Algorithm is compared with the one of TW (Time Warp) Algorithm through the use of PHOLD model in experiments. Finally, the experiment results state that TD performs better than TW under most conditions.

A nonlinear once-through coal-fired boiler-turbine unit model is introduced and analyzed for the purpose of control system design. Firstly, input-output variable pairing configurations for this 3×3 system are obtained based on static relative gain array and row-Gershgorin band analysis using its linearization model at 100% load. A decentralized PI control system is then deployed and tuned to explore its control system performance as the basis of further study. Results show that the decentralized control structure has good setpoint tracking performance, while the disturbances between loops are still notable due to non-diagonal dominance, thus control strategy of decoupling or disturbance rejection is necessary.

Based on current research basis at home and abroad, in order to improve the level of safety technology and safeguard work efficiency, Internet of Things is brought into crane structural health monitoring. Crane structural health risk level evaluation criteria and structural health warning technology expert system are the two key aspects of the project. The mechanical properties of Q235 were studied and theoretical calculations were done by the technologies of ANSYS and ADAMS, finally the threshold was determined. Signals are collected by FBG sensors and transmitted to a demodulator, and then use software calculates the real-time stress by a formula we given in. Finally the real-time stress in different parts of the crane is acquired. If the real-time stress exceeds the allowable stress we set, it issues an alarm signal to the operators.

NiTi shape memory alloy was potentiostatically anodized in a molybdate electrolyte containing ammoniac ion to form a thick and uniform oxide layer. The oxide layer was characterized by SEM, XRD, EPMA, XPS and potentiodynamic polarization test. It was found that the as-prepared coating is a thick (approx. 40 μm), smooth and dense oxide layer, and is free of cracks and porous defects. Moreover, the surface analyses revealed that the anodic oxidation at 60 mV potential (SCE) reduces significantly the proportion of Ni in the outmost surface layer, and the atomic ratio of Ti and Ni elements is raised from 1:1 to 9.7:1. The as-prepared coating was primarily composed of noncrystalline TiO2 on the outermost surface with a small quantity of Ni (OH)2. Potentiodynamic polarization tests in Fusayama artificial saliva pH 6.2 demonstrated that the oxide layer presents a significant increase in breakdown potential due to titanium enrichment.

The effect of micro-grinding medium on grinding performance of Portland cement, with determining specific surface area, 45um and 80um sieve residue, density, particle size distribution, chemical shrinkage and strength were studied. In this article, the RRBS of grinding of cement particle size distribution data was observed to be very well. When the content of micro-grinding medium is less than 10%, the specific surface area is increased as the ratio of the grinding medium increased. At the same time, the flexural and compressive strength of cement increased as the content increases. The density of cement decreased quite significantly with the content of micro-grinding medium increased. The 80um sieve residue of the cement increases obviously, when the content of micro-grinding medium is more than 10%.

By mapping one dimension time series into two dimension graph, Horizontal Visibility Graph (short as HVG) method provides a new way to analyze time series structural properties, it has been used in economics, biology, sociology and other areas related. In this paper, we apply it to investigate the Low-rate Denial-of-Service (LDoS) flow packet sequence pattern variations. We establish the Packet Sequence Model and put new metrics to measure the pattern similarity. Using the data carried out on PlanetLab, we find out that the packet sequence time series of the receiver has a bigger HVG degree than the sender, indicating that the packet sequence patterns get more irregular under the impacts of end-to-end delay.

Deep level transient spectroscopy (DLTS) and photo induced current transient spectroscopy (PICTS) are commonly used methods for the identification semiconductor impurities and defects. In this paper, a measurement system of DLTS and PICTS has been developed by LabVIEW. A series of different instruments construct this systems hardware (signal generator; current amplifier; capacitance meter; oscilloscope,etc.) while software is also easy to program by LabVIEW. This system demonstrates high generality for both DLTS and PICTS, and data acquired can be stored or read in computer. By contrast, it is much lower cost comparative to commercial DLTS or PICTS system. Testing result of silicon P+N junction coincides with semiconductor theory research.

Laminated veneer lumber (LVL) was manufactured from Chinese fir, which had been impregnated with laboratory prepared low-molecular-weight water-soluble phenol formaldehyde (PF) resin. The effects on the mechanical and physical properties of the LVL were investigated which made from veneer that had been subjected to various levels of the resin treatment. The results showed that either under conditions of normal temperature and pressure, or at increased pressure, the weight gain would increase with the impregnating time. Under the same impregnation technology, along with the increase of resin concentration, dry weigh gain increased, wet weight gain first increased and then decreased. Density of LVL increased, TS reduced, MOR and MOE first increased and then decreased as the weight gain increased.

Methanol dehydrogenation to formaldehyde was conducted in a fixed-bed flow reactor under the atmospheric pressure with sodium carbonate modified by metal oxides. The effects of catalyst composition, reaction temperature, weight hourly space velocity (WHSV) on the reaction were investigated. The catalysts were characterized by XRD, TG and nitrogen adsorption. The results indicated that ZnO/Na2CO3 containing 2wt% ZnO prepared by mechanical grinding method had higher catalytic activity for methanol dehydrogenation to formaldehyde. The conversion of methanol and the selectivity of formaldehyde were respectively 57.62% and 77.84% under the condition of wmethanol/wfeed =0.19, reaction temperature 650°C and WHSV (methanol) 7h-1.

A straight pipe viscometer is proposed, which consists of the measuring sub-system and the data-acquisition and signal processing sub-system. The measuring sub-system include straight pipe, pressure transmitter, Coriolis flow-meter and slurry bump, and the data-acquisition and signal processing sub-system include single-chip processor, A/D converter, digital display, serial output port, drive circuit and so on. The measuring principle and working process of the straight pipe viscometer are analyzed. The measurement data and results are given and compared with test results of rotary viscometer in the same test conditions. The measuring accuracy is 3% at 5-150mPas, and the online measurement of viscosity is implemented.

The performance of a Portland cement mortar modified by styrene-acrylate emulsion (SAE) latex and vinyl-acetate/ethylene (VAc/E) copolymer type redispersible powder (RPD) were studied. Performance similarity was found in our comparative study on both mortars. Results suggested that optimum usage of polymer content is between 2~3% for both SAE and RDP modified mortar which would give the highest toughness and adhesion on the EPS panel. The chemical composition difference between SAE and RDP have less effect on the compressive strength, flexural strength of the mortar and adhesion strength on the EPS panel.

This study explored recycling waste expandable polystyrene (EPS) foam to produce styrene-acrylate emulsion (SAE) latex. EPS substituted styrene ranging from 10% to 50%. Flocculation was observed when EPS content is >40%. Solid content and gel rate confirmed this observation. Particle size distribution showed particle size increased and its distribution broadened as EPS content increased. This may probably due to the viscosity increment of the emulsion droplets when EPS content increase and lead to increment of the droplets size and the emulsion gradually lost stability, therefore the solid content and gel rate increased. Hence stable SAE can be produced with EPS

Coal fly ash (CFA) modified by sulfuric acid treatment was used as a low-cost adsorbent for removing natural organic matter (NOM) in an artificial lake. The specific surface areas and SEM images of modified coal fly ash (MCFA) and CFA were observed. Two equilibrium models were compared to evaluate NOM removal process with a better fitting using the Freundlich model. Kinetic studies were also carried out to fit the experimental data. The pseudo second-order provided the highest coefficients of determination.

Several compound mineral admixtures, such as steel slag powder, granulated blast furnace slag powder and silica fume, are mixed with proper proportion to improve the workability of High Performance Concrete（HPC）. Through the orthogonal experiment, workability of HPC is analyzed on water-binder ratio, sand ratio, the amount of superplasticizer and the amount of compound mineral admixtures. Results show that: workability of HPC was significantly effected by the amount of naphthalene sulphonate water-reducing admixture and water-binder ratio, the amount of compound mineral admixtures and sand ratio are impact factors on the workability in a certain extent.

Thin films of perovskite manganite La0.9Hf0.1MnO3 (LHMO) have been grown on (100) SrTiO3 single-crystal substrates with different growth pressures by pulsed laser deposition. The different transport behaviors of films have been fitted by various models. The results clearly demonstrate that oxygen pressure is an efficient way to change the transport behaviors of LHMO films. All the transport behaviors observed in LHMO films can be better fitted by Mott’s variable range hopping model than the other two models.

In reflection seismology the reflectivity sequence is of primary interest and must be estimated. Estimation of the reflectivity sequence is based on deconvolution of seismic trace data. Modelling the seismic trace as the non-Gaussian moving average time series, we propose a deconvolution method based on the modified estimation, which is consistent estimation of moving average models with heavy tailed error distribution. The asymptotic equivalence is established between the proposed method and the deconvolution using . Simulation studies are presented to validate the equivalency. Furthermore, based on this equivalence the consistency problem of the deconvolution has been discussed.

Fuel control is the major part during the FCB control process of the unit, especially the fuel used by W-shape of flame boiler is inferior coal which has the character of low-volatile and low heating value. The switching way, procedures and speed of the fuel during the FCB process will directly determine whether the boiler can have a stable combustion after the fuel amount is greatly reduced for the unit. In this article, the strategy for quick switching of new type of fuel amount for W-shape of boiler and quick stabilization control for boiler combustion is proposed. And in this article, we also take an example of an engineering concerning foreign affairs which has successfully implemented FCB. the boiler fuel control technology which realized the function of FCB for W-type flame boiler unit is deep analyzed. It leaves a very good reference value for the test of FCB for other similar units.

The adsorption behaviors of chlortetracycline on two kinds of granular activated carbons with different BET surface area and average pore width have been studied. The results show that larger BET surface area is beneficial for the adsorption capacity, and wider pore structure can enhance the adsorption rate. Initial solution pH has great effect on the adsorption behavior, and the suitable pH for the effective adsorption is from 4 to 8.

Using SBA-15 molecular sieve as the support, Cu/SBA-15 and Cu-ZnO/SBA-15 catalysts were prepared by grinding and impregnation. They were characterized by XRD, TEM, TPR and nitrogen adsorption/desorption methods. Their catalytic activities of the dehydrogenation of methanol to methyl formate (MF) were studied and compared.The results indicated that the Cu and ZnO in the catalysts prepared by grinding had a worse dispersity than that prepared by impregnation. However, the reduction temperature of the CuO in the catalysts prepared by grinding was obviously lower than that prepared by impregnation and the selectivity to MF can be improved with the adding of ZnO. The experiments showed that the methanol conversion rate and selectivity to MF were 15.23% and 79.81% at 270°C for Cu-ZnO/SBA-15-G prepared by grinding, respectively. For Cu-ZnO/SBA-15-I prepared by impregnation, the methanol conversion rate and selectivity to MF were 13.41 % and 81.31% respectively.

Used the high order spectrum and slice analysis method, studied the elevator running vibration acceleration signals and calculated the trispectrum two dimensional slices, bispectrum and theirs diagonal slices, under different running conditions. The results show that: when the elevator normal operation the acceleration signal spectrum peaks concentration, otherwise the acceleration signal peaks dispersion; in fault condition, compared to bispectrum peaks trispectrum peaks is sharper. High order spectrum contains abundant information of different fault elevator running details. It is a suitable analysis tool for diagnosing the faults of elevator.

To improve the quality controlling of pipeline steel and to avoid mis-down grade, the cleaness including content of non-metallic inclusions, total oxygen and nitrogen of the first continuous casting slags of X70 pipeline steel were investigated. Results showed that, content of total oxygen, nitrogen, large non-metallic inclusions and inclusions areal density decrease with casting length increasing gradually. But at casting length of about 5.0 m which is just during the drastic changeing period of casting speed approaching to stead casting state, the content of large non-metallic inclusions and inclusions areal density increases abruptly induced by the entrapment of mold powders. Thus, to decrease the degradation rate of pipeline slab, the increasing rate of casting speed should be adjusted more evenly.

Nanocrystalline diamond (NCD) films were synthesized by hot-filament chemical vapor deposition (HFCVD) method at different temperatures (600 °C, 620°C, 640°C and 660°C). The AFM and Raman analyses demonstrated that deposition temperature has a great effect on the surface roughness and quality of NCD films and 620°C is the temperature to grow NCD films with smooth surfaces.

According to the characteristics of the elevator fault vibration signals, proposing a Based on analysis of time series AR bi-spectrum elevator fault diagnosis. When the zero-mean, non-Gaussian white noise elevator device, the vibration signal using sampling to establish time series autoregressive model (AR model), resulting in AR bi-spectrum. Bi-spectrum signal processing is a new, powerful signal processing technology, which can be described the nonlinear coupling, suppression Gaussian noise and retention of phase information, you can get the elevator working status of the different dynamic characteristics. The results show that bi-spectral analysis with AR elevator failure is feasible and effective.

In this paper, the threshold voltage of diamond film-based metal-semiconductor field effect transistors (MESFETs) has been simulated using Silvaco TCAD tools. The drain current (Id) versus gate voltage (Vg) relationship, and the distribution of acceptors in diamond surface conduction layer were also investigated. From the simulation results, it was found that the gate length contributed the most to the threshold voltage, while the doping depth almost had no impact on the threshold voltage value.

With the development of embedded system, the implementation of application based on Qt and embedded Linux is an emphasis in researching the embedded GUI system. This paper introduces the cross compiling process and Qt/Embedded, and then describes how to develop the applications on Qt/Embedded. The methods in this paper have been validated on this developing platform(QQ2440V3)．

Carbon dioxide reforming of methane over Ni/Mo/ La2O3-SBA-15 was studied. The catalyst was characterized by N2 adsorption, X-ray diffraction, H2-TPR,CO2-TPD and TG-GTA analysis. The results indicated that the introduction of an appropriate amount of La2O3 exhibited a higher activity and stability. In the long term stability test, La2O3 impregnated Ni/Mo-SBA-15 gave the highest conversion and stable activity at 800°C for 250 h. The effect of La was suggested to be due to its lower tendency to carbon deposition. Characterization results showed a strong interaction between La and Mo or Ni which facilitated the improvement of catalytic performance.

This paper is mainly about power quality monitoring system analysis method, designs and implements the system based on object-oriented UML platform. Combined with UML modeling language CASE tool rational Rose, and further analysis, finally realize the power quality monitoring system.

In parallel filesystem, data for a single file is striped across multiple storage nodes to provide high performance. But the synchronous write performance of the small file is always poor because it is low efficiency to strip the data of small file to multiple storage nodes. So, many parallel filesystem use the uniform distribution method to save whole the small file to on storage node. This storage method of small file leads to the performance bottle of small file synchronous write in parallel file system. This paper presents a high performance automatically cooperative synchronous write mechanism for the small file in parallel filesystem: C-SWM. C-SWM is a set of pure software mechanisms which provide the reliability of synchronous write operations with the performance of asynchronous write operations. The data of asynchronous write in C-SWM are saved on both two cooperative nodes in parallel filesystm before being written to disk. The experiments in this paper prove that the C-SWM can great improve the small file synchronous write performance in parallel filesystem.

The method based on the theory of Fuzzy Pattern Recognition is divided into three parts. Firstly, use Hough transformation to extract the feature points of vehicles, and use the ratio between two absolute distance of adjacent feature points as the characteristic values of vehicles; secondly, use Fuzzy C-mean Classification to handle feature data of 75 car model, then establish a degree of membership matrix as the sample space; thirdly, consider the classification algorithm based on fuzzy approach degree and the credibility of the vehicle feature to propose a weighted close- degree recognition algorithm. This recognition method has a good effect.

CdS films were prepared by R.F. magnetron sputtering method. The effects of vapor CdCl2treatment on the properties of CdS films were studied. The vapor CdCl2thermal treatment at different temperature was employed in a CSS device, using CdCl2powder as evaporant. The structural and optical properties of CdS films were investigated by x-ray diffraction (XRD), PL spectra, and transmittance spectra, respectively. The results revealed that the CdS films had a structure of hexagonal wurtzite with a preferential orientation of the (002) plane. A better crystal quality and larger grain size, which are good for the solar cell application, were observed in the CdS samples annealed with CdCl2Subscript text.

Diamond film can be used as optical window materials, mask materials and coating materials of optical device and solar cells. Diamond films with different thickness were prepared by HFCVD method. Raman scattering measurement, SEM and AFM show a good diamond character. Optical parameters in infrared region, such as refractive index (n) and extinction coefficient (k) of diamond films with different thickness were determined by spectroscopic ellipsometry method with a proper fitting model.

A serial communication protocol according to motion control (MC) system data format has been developed. Based on taking management platform which can be embedded controller or personal computer (PC) as the MC data sending station and motion controller whose core is Digital Signal Processor (DSP) as the MC data receiving station, the detailed situation of how to use the data transfer protocol and the data processing method in MC system is described. Firstly, the organization format of the serial communication data frame is introduced. Then, the relevant saving format of the MC data received by motion controller is described, and the way of how to receive the MC data from serial port is designed. Finally, the whole process of data saving in RAM and data taking out from RAM by motion controller are stated. With the serial communication protocol, a control solution has been provided in the MC system.

This paper provides a general study on cement paste flow which derived from self- compacting concretes. Rheometer, Marsh cone and mini-slump cone were used to evaluate fluidity of cement pastes containing superplasticizers of different types and dosages and loss of fluidity over time. There is a superplasticizer saturation dosage beyond which no significant fluidity increase can be found. This paper evaluated the effect of these three methods using rheometer as control and the optimum superplasticizer type for the preparation of self-compacting concrete was suggested.

The Cd1-xMnxTe crystal is believed to be a good candidate to compete with Cd1-xMnxTe in the X-ray and γ-ray detector application. In this paper, Indium (In) doped Cd0.8Mn0.2Te (CdMnTe) ingots were grown by the modified Vertical Bridgman method. The as-grown crystals were characterized using Near-Infrared (NIR) transmission spectrum mapping of composition, X-ray double-crystal rocking curve measurement, I-V measurement and 241Am gamma rays radiation measurement. The Mn composition extracted from the NIR spectra at different axial and radial distances of the 30×40×2 mm3 CdMnTe wafers shown that the Mn concentration in the range of 0.19430.0008 to 0.2020.0025 mole fraction. The FWHM values of the X-ray rocking curves are of 40-80 arc sec, indicating a high crystalline perfection. The resistivity of the wafers is (2-3) ×1010Ω.cm. The CdMnTe planar detector irradiated by 241Am source shows the energy resolution of 8.5%.

ZnS films were prepared on silicon (Si) and glass substrates by radio-frequency (RF) magnetron sputtering method. The effect of annealing treatment on the structural and optical properties of ZnS films was studied. The results showed that annealing treatment was helpful in improving the crystalline quality of the ZnS films, and the bandgap was about 3.61eV and 3.49eV for films with and without annealing, respectively. A ZnS/ Si heterojunction diode was fabricated successfully by depositing ZnS films on p-type single-crystalline Si substrates. The electrical and optical property of the device was reported.

The evolution of the screening efficiency for the probability screen was given in this paper. Trispectrum based on AR model was estimated with the vibration signal obtained from the probability screen. The relevance between trispectral slices and screening efficiency was analyzed qualitatively. The evolution of screening efficiency was also discussed in detail with a statistical quantity, i.e., kurtosis(K); In addition, the relationship between the correlation dimension and screening efficiency was analyzed quantitatively. The results show that the relevance between the spectral characteristics and screening efficiency is consistent with the relationship between the correlation dimension and screening efficiency.