The ¹H chemical-shift values of mollugin and purpurin in extract from Rubiae Radix et Rhizoma were assigned on the basis of 1D and 2D NMR, and a specific, simple, sensitive 1H NMR method has been developed and validated for the simultaneous quantitative determination of mollugin in extract from Rubiae Radix et Rhizoma When the solvent effects on the resolution of target signals and the solubility of the crude extracts were taken into account, dimethyl sulfoxide-d₆ was selected as an optimal ¹H NMR solvent.  Quantitative determination was carried out by using the signal of the olefinic proton of mollugin (δ_H 5.77, H-2′) and H-3 of purpurin (δ_H 6.67), which were not interfere with other signals. Maleic acid was selected as internal standard because of its stable physical and chemical properties and having simple resonance signal. The improved method possessed good stability, repeatability, precision and accuracy for the quantification of mollugin and purpurin and the determination results agreed with the data obtained by HPLC-UV method. Due to its simple operation, short test time and without any reference

In order to evaluate and control their qualities completely，18 batches of Prunellae Spica were bought，and their appearances, TLC identification, the inspection of moisture, ash, extract content were carried out. Furthermore, the HPLCfingerprint of Prunellae Spica, the determination; of caffeic acid and rosmarinic acid content and the pattern identification of different batches by principal analysis and cluster analysis have been established. The results showed that the appearance of each batch accorded with the standards of China Pharmacopoeia, but few of them could reach standard of superior grade product; rosmarinic acid could be detected from all batches by TLC; Moisture, total ash and extract content were in line with the requirements of Pharmacopoeia; Acid insoluble ash of all the batches except 3 of them could comply with the requirement of Pharmacopoeia, but there were rather big difference among various batches; the overall similarity of the fingerprints was high, but the chromatographic peak area and the content of the caffeic acid and rosmarinic acid existed rather big difference between batches. Through the research above, the quality of Prunellae Spica was preliminarily understood, and it is recommended to further improve the appearance evaluation criteria, and add fingerprint as a new quality evaluation index .

Four glycosidic compounds were rapidly separated from the nbutyl alcohol of Folium Sennae by high-speed counter-current chromatography with the solvent system of nbutanolwater (9:10, V/V). The flow rate is 2.0 mL/min, the detection wavelength is 280 nm, and the rotate speed rating is 860 r/min. Separated from the nbutyl alcohol extracts (200 mg) of Folium Sennae, their structures were identified as apigenin-6, 8-di-C-glycoside (10 mg), kaempferol-3-O-β-D gentiobioside (9 mg), isorhamnetin-3-O-β-D gentiobioside (15 mg), and sennoside B (5 mg) with the purities were respectively 97.6%, 98.9%, 98.3%, and 99.3%. The results show that this method is simple and efficient, which is suitable for the separation and purification of glycosidic compounds from Folium Sennae.

The optimal technology of extracting soluble dietary fiber (SDF) from stems of Lonicera japonica by cellulose method was investigated and the properties of SDF were also analyzed. Based on singlefactor experiments, orthogonal experiments were performed to optimize the extractive conditions, and the results showed the optimum conditions were pH 4.8, at 45 ℃, 1∶12（g/mL）of material and water, cellulase 1.2% by volume, extracting for 6 h, 3 times.Under the above conditions, the yield of SDF was 3.57%, whose water holding capacity was 6.1 g/g, expansion force was 5.3 mL/g, oil holding capacity was 4.53 g/g, cation exchange capacity was 0.58 mmol/g, highest free radical scavenging rate on DPPH was 80.13%, and the SDF had excellent physical and chemical properties. The study indicated that the cellulose method can be used to extracting SDF from stems of Lonicera japonica.

The photoelectric properties of twodimensional layered semiconductor materials, especially for those with a few atomic layers, are closely related to their crystal structures. Thus,  the critical question is to select the proper characterization. In this article, the tin diselenide with different layers has been obtained by means of mechanical exfoliation, and the characteristics of the crystal structure have been studied by optical second harmonic generation and Raman spectrum. By using second harmonic generation, the crystal axis of tin diselenide was confirmed accurately and the effect of different thickness on second harmonic generation was analyzed, providing a purely optical method of determining the orientation of crystallographic axes, as well as offering the possibility to discover other nonlinear optical properties of tin diselenide. By Raman spectroscopy, it is found that the interlayer vibration mode was sensitive to the changes of thickness and temperature, thus tin diselenide could be applied to the temperature detection in situ within a large range.

In this paper, the applications of different various plastic deformation processing, such as hot extrusion, rolling and large plastic deformation, on grain refinement of wrought magnesium alloy were reviewed systematically. The high cost of related products caused by low processing speed has been regarded as one of the main factors limiting the development of wrought magnesium alloys. But in the future, this problem can be solved by semicontinuous casting preparation of large size using multioutfield and rapid processing of fine grained magnesium alloys.

 In this work, the intrinsic kinetics of the first reduction stage of a hematite as oxygen carrier (OC) reduced by carbon monoxide (CO) has been investigated. For the intrinsic kinetics analysis, the BET surface area and the pore size distribution tests showed that the porosity of this kind of OC was 0.031, which revealed that the OC had dense structure with undeveloped pore structure. The temperature programmed reduction experiments were conducted in the thermo gravimetric analyzer, which showed that the reduction of OC was conducted in stages, and the appropriate experimental temperature range for testing the intrinsic kinetics of the first reduction stage was 400~650 °C. Furthermore, a series of formal experiments were conducted in a batch fluidized bed system with different temperatures and different CO concentrations. The intrinsic activation energy and the preexponential factor were determined as 138.55 kJ/mol and 6.8×1013 s^-1 respectively, after the internal and external diffusion factor been eliminated. The analysis to the internal and external diffusion factors deepened the acknowledgement to the reaction properties of this kind of hematite OC reduced by CO. The researching results of this paper had good compatibility with many previous research conclusions such as shrinking core model, external diffusion control and smaller apparent activation energy.

The Ebsilon software was employed to establish a thermodynamic cycle model of a typical heat pump heating system by utilizing the waste heat in marine aquaculture. Simulations were carried out to find out the defects of the heat pump system for a typical engineering case. The optimization of the heat pump system was carried out, and a doubled energy efficiency was obtained. In the case of an indoor sea cucumber seedling plant in Qingdao sea area, electricity saving is up to 2 000 kW·h each day in winter. The energy saving potential is tremendous, and the economic benefit is remarkable. The case analysis shows that the critical point is to follow the essential scientific principle of"temperature counterpart and cascade utilization" when reusing the waste heat of drainage in mariculture by a heat pump system.

Based on fiber Bragg grating (FBG), a rapid response temperature sensor suitable for marine disposable measurement was designed in this paper. The temperature sensitivity of the sensor was calculated by theory, and the response time of the sensor with different structural parameters was simulated and analyzed using the finite element method. A sensor with response time 17 ms was designed, and its theoretical sensitivity was calculated to be 30.7 pm/℃. This sensor is suitable for rapid measurement of ocean temperature.

In order to realizing the realtime monitoring of the seepage pressure of the tailing pond, a kind of corrugated diaphragm based optical FBG seepage pressure sensor was designed. The influence of the ambient temperature was eliminated by the double temperature compensation of the material and temperature grating. The experimental results show that the pressure measuring range is 0~20 kPa, the pressure sensitivity is 27.8 nm/MPa, the linearityfitted is up to 0. 999 99, which is suitable to high accurate measurement of the liquid level changes within narrow range. The application of the sensor in the detection of saturation line of tailing pond shows that the sensor possesses the advantages of high precision and good repeatability.

Due to the impact of the equipment failures and the external environment factors, data quality issues such as data distortion, loss, redundancy and so on often occur in the process of road traffic information data acquisition, which is unable to meet the requirements of the intelligent traffic management. In this paper, a method of road traffic data quality assessment was put forward based on the grey theory and analysis hierarchy process (AHP), in which, 3 data characteristics, such as accuracy, completeness and timeliness, were used as evaluation indexes, AHP method was used to determine the weight of each evaluation index, and the whitening weight function of grey systems theory was used to establish the satisfaction matrix model. The feasibility of the method is proved by the instance analysis of the measured traffic flow data of Beijing′s second ring road.

Aiming at the particularity of holiday travel behavior, using the 2014 survey data of Beijing holiday travel behavior, the behavior model of green travel on holiday was constructed based on the Nested Logit modeling theory. The significant factors to affect travel choice were screened out, and the hierarchical structure of Nested Logit model on holiday green travel was established. Then, the parameter estimation results of the holiday travel choice model were analyzed. The results show that whether possessing a car, whether possessing a bicycle, living arrangement, travel purpose, travel distance and travel cost are the major factors affecting the choice of holiday travel mode. And whether possessing a car, whether having companions and travel purpose is the major factor affecting the holiday green travel choice.

Based on BaiduMap API (application program interface), a query system was developed for collecting and identifying POI (point of interest) in the surrounding area of metro rail transit station, which realized the automatic collection of POI. By optimizing the traffic zone blocking method, a traffic generation forecasting model was constructed, which was used to analyze the status quo along an urban rail transit line in A City. The results show that this method is helpful to improve data collecting efficiency and accuracy of traffic generation forecasting when it’s applied to forecast the shortterm trip generation and trip attraction of a planning urban rail transit line.

The bi-semirings whose semigroups (S,+) are semilattices, semigroups (S,·) are rectangular groups and semigroups (S,) are semilattices were studied in this paper. Two partial order relations were constructed on two subsets of a bi-semiring, and a necessary and sufficient condition for that the Green relation on semigroups (S,·) is a bi-semiring congruence was obtained. Furthermore, the equivalent proposition that is a bi-semiring congruence was presented.

For a positive integer r, a rhued coloring of a graph G is a mapping c: VG→1,2,…, k, such that：(1) if u,v∈VGare adjacent vertices in G, then cu≠cv; (2) for any v∈ VG, cNv≥minNv,r.N(v) is the set of vertices which are adjacent to vertex v. The smallest integer k, which let G have a proper (k,r)coloring, is defined as rhued chromatic number χrG. In this paper, the differences between χrG-vand χrG (d(v)=2) which caused by 2vertex deletion is investigated.

The finegrained massive granite outcrop samples with a weak or broken surface were selected, the force critical angle which led to the new rupture surface of the rock was studied under high temperature and high pressure simulated in the lab. Under the temperature 100 ℃, confining pressure 100 MPa and the temperature 200 ℃, confining pressure 200 MPa, the experiments were made separately through changing the angle with principal stress. The results showed that when the angle α was 0°~30°, the rock steadily slipped along the original rupture surface; when the angle α was 30°~60°, the fault was dominated by stickslip; when the angle α was 60°~90°, mainly led to the generation of the new rupture surface; the critical angle likely to generate a new rupture surface ranges between 50°~65°; the new rupture occurred when the angle α was greater than 65°. The phenomenon, which occurred on rocks, such as stable sliding, stickslip, and a new rupture surface generation, was explained by analyzing the relationship between the stress from different slices (σ) and strain rate (ε) . As is showed in Mohr′s circle theory, under the complex fracture background, the rock stress angle has dominant effect on the generation of the new fracture, and for a given action condition, the critical angle 60° led to the new fracture was possibly the dangerous value which could cause the strong earthquake.

The induction of polyploidy has many advantages such as the huge organ, stronger resistance and increase of metabolite, and it is often used for breeding research of medicinal plant. In this study, the peppermint stem containing bud was induced by colchicines in order to obtain the chromosome doubling variant plants. The peppermint stems were induced by colchicines separately with different concentrations(such as 50、100、150、200 mg/L) and different processing time, and the optimum concentration and processing time were screened out by comprehensive consideration of the mortality rate of stem, the induction and growth of regenerated shoot, and the rate of variant plants. The optimum combination is 150 mg/L colchicines for 48 h. The growth, leaf morphology, the size and density of stomata, and the chromosomes number of the variant plants were observed. The peppermints with chromosome number doubled were successfully obtained, which laid the foundation for the breeding and selection of peppermint.

In this paper, based on Au Nanorod saturable absorber(SA), laser characteristics of LD endpumped passively Qswitched Nd:YASG laser were demonstrated. By controlling the lengthdiameter ratio of the Nanorod, the longitudinal surface plasmon resonance (SPR) absorption peak was located at 1 062 nm. Therefore, passively Qswitching could be achieved by using them. Furthermore, stable passive Qswitched pulses with an average output power of 14 mW was obtained at the pump power of 4.9 W. The minimum pulse width of 944.1 ns was achieved at the pulse repetition rate of 100.1 kHz. The experimental results prove that Au Nanorod is a promising SA for solidstate lasers.

According to the structure, the news style was divided into several paragraphs. Based on sentiment lexicon and semantic rules, a method of extracting sentimental key sentences was used to analyze the sentiment of sentences within each paragraph. Firstly, sentiment lexicon was built by considering the emotion, twist, negation, degree and sums up vocabularies; Secondly, according to rules, news text was divided into sense groups, sentences, paragraphs and chapters; Furthermore, orientation value of sentimental key sentences was computed by the rules established, and then the sentimental orientation value of the paragraphs and the whole chapters was obtained by weighted average of sentences, thus the sentimental orientation of news was revealed. Compared with lexicon based method and SVM sentiment classification, experimental results show that the method proposed has good effects on the orientation identification of news text, showing good feasibility as well.

A rural area oriented medical cloud system was presented based on WBAN and cloud computing, providing solutions to the lagging behind of medicalcare services in rural areas. The system put forward an architecture work which consisted of both intelligent medical device and comprehensive medical cloud platform. Based on WBAN and intelligent hardware technology, the lowcost, general and scalable intelligent medical device was designed. The lowrate network oriented reliable data transmission was achieved on the basis of realtime data fusion and compressive sensing algorithms. The medical cloud platform was established based on three mechanisms, i.e. integration of multilevel medical resources, sharing of multimode medical services, and high support capabilities for medical services. Compared with other mainstream products, results showed that the system proposed could effectively improve the medical service capabilities, and was helpful for the construction of a new Internet based medical mode oriented to rural areas.

With the method of ultrasonicassisted extraction, the content and its change rule of total flavonoids in Trichosanthes kirilowii seeds during six stages of prophase imbibition, imbibition, germination, radicle elongation, bud breaking and seedling were studied. After degreased by petroleum ether, total flavonoids of Trichosanthes kirilowii seeds at different germination stage were extracted with 70% ethanol as solvent by ultrasonicassisted extraction, and determined using rutin as the standard by colorimetry method. The results showed that total flavonoids content in the seeds of Trichosanthes kirilowii was low, about 1 mg/g, and it showed tendency to descend firstly and then ascend during the whole germination process, rising to 2.7 mg/g at seeding stage. This study provides references for further understanding and utilization of Trichosanthes kirilowii seeds, and provides theoretical basis for artificial regulation of total flavonoids content in Trichosanthes kirilowii seeds.

A HPLC method for determination of the contents of six components in raw Gastrodia elata, such as gastrodin, phydroxybenzyl alcohol, p-hydroxybenz aldehyde, adenosine, parishin A and 4, 4′-dihydroxydibenzyl ether, was presented. The analysis was performed on an Agilent 1120 HPLC system with YMC-PEAK ODS-A column (250 mm × 4.6 mm, 5 μm). The six components were separated in 80 mins with gradient elution using mobile phase composed of 0.1% CH3COOH—H2O (A) and CH3OH (B): 0~5 min, 5% B; 5~65 min, 5%～40% B; 65~80 min, 40%~100% B. The flow rate of carrier gas was set at 1 mL/min, the column temperature was set at 25 ℃, and the injected sample volume was 50 μL. Six ingredients showed a good linear relationship (R≥0.999 2) within the linear range, and the average recovery rates were in the range of 94.20%~99.68%，and the relative standard deviation was less than 1.96. There were differences in the amounts of six ingredients among different varieties of raw Gastrodia elata, for instance, the contents of the six ingredients in Gastrodia elata f. elata were slightly higher than those in Gastrodia elata f. glauca. In the same variety, the content of parishin glycosides was higher while the contents of adenosine and 4, 4-dihydroxydibenzyl ether were lower. The six ingredients such as gastrodin extracted from fresh gastrodin were stable within 8 hours. This method has the advantage of good separating effect and repeatability, rapid and simple, which could provide references for objective and comprehensive researches on the Rhizoma Gastrodiae.

The specific chromatogram of flavonoids in Radix Scutellariae was established by HPLC in this paper. The column filling, eluent and the elution condition of solid phase extraction were optimized using the recovery rates and specific spectral similarity of six main characteristic peaks in HPLC specific chromatogram as indexes. Experimental results confirmed that C18 solid phase extraction (SPE) possessed the highest recovery rates of six components. The SPE column was rinsed with methanol0.3% formic acid（20∶80，V/V）, and then was eluted finally with methanol (containing 0.3% formic acid). After being purified, the recovery rates of six components were all over 89%, and the similarity of characteristic chromatogram was higher than 0.98. Based on HPLC characteristic chromatogram, the optimized purification process of flavonoids in Radix Scutellariae with solid phase extraction can ensure that the main effective components remain consistent before and after purification of Radix Scutellariae.

To investigate the contents of 8 metal elements (Al,As,Cd,Cu,Mn,Ni,Zn,Pb) in Lonicerae Japonicae Flos from three main habitats Shandong, Henan and Hebei, microwave digestion was used for treatment of the flower samples, and the contents of 8 elements were determined by ICP-OES. The method showed a good linear relationship (R between 0.999 96~1.000 0), and the average recovery rate between 95.30%~101.2%, and the relative standard deviation less than 3% (n=8), in line with the requirements of the element analysis. Each content of 8 elements (Al、As、Cd、Cu、Mn、Ni、Pb and Zn) in 26 samples of Lonicerae Japonicae Flos was measured,and they were in the ranges of 10.30~49.68,0.050 0~0.333 3, 0.066 7~0.333 3, 0.300 0~7.317, 4.983~26.87, 5.767~12.55, 0.100 0~1.500 and 3.550~16.90 mg/kg respectively. The results showed that the metal element contents in Lonicerae Japonicae Flos were quite different, and some mental contents were too higher or even exceeded the standard values.

As the basic contractile unit of striated muscles, sarcomere has a highly ordered structure, which was assembled by Actin, Myosin, and a variety of related proteins. During the assembling process, the correcting assembly of Z belt, M belt, and a series of associated proteins is essential for maintaining movement of muscles, so the study on the mechanism of folding and assembling of sarcomere composition protein is very important for understanding the causes of muscle disease and carrying out targeted therapy. In this paper, the research progress of sarcomere primary components and sarcomere assembling process was reviewed. It was considered that the present studies on sarcomere skeleton assembly, the function of the sarcomere contractile complex, and the relationship between the chaperones and muscle diseases were not deep enough. Therefore, in the future, more studies should be developed on the relationship between Myosin binding protein, Titin, molecular chaperones, and diseases, to find new ideas and solutions to the treatment of muscle related diseases.

To study the anti-inflammatory effects of one marine medicine, compound Kunhai ginger decoction, whose component was prepared in different combination, zebrafish inflammatory model was established, induced by copper sulfate solution. The model was intervened by different concentrations of component combination solution from Kunhai ginger decoction (100, 50, 25 μg/mL) respectively, and its effect on the number of macrophage cell in zebrafish was observed by stereo fluorescence microscope. The results reveal that the number of macrophage cell in zebrafish inflammatory model induced by copper sulfate is reduced obviously due to the component combination solution from compound Kunhai ginger decoction, which has in vivo antiinflammatory effects.

LiMnPO₄ has the potential applications as a cathode material for lithium-ion batteries， and chemical co-precipitation is an ideal method to prepare LiMnPO₄. There have been problems, such as the low conductivity and low Li⁺ diffusion, lying in the recent studies of LiMnPO₄ cathode materials. According to these problems,this paper, starting from the synthesis of LiMnPO₄ using Mn₃(PO₄)₂、MnPO₄、NH₄MnPO₄ and other different kinds of Mn-P precursors, summarized the recent research progresses at home and abroad in LiMnPO₄ prepared by chemical co-precipitation of twostep method, in which carbon coating and metal ion doping were usual modification methods. Aiming at the existing problems in recent researches that LiMnPO₄ with different properties can be obtained from different kinds of Mn-P precursors, it was considered that the mechanism of chemical co-precipitation should be further discussed and the related kinetics and thermodynamics study should be carried on. This paper provides references for the further study of LiMnPO₄ cathode materials and its industrialization.

Directed against the performance degradation problem of domestic car plate steel due to increasing Si in molten steel during the smelting process, in this paper, the changes in the production of Si content in each smelting stage were studied. The influence factors of the molten steel raising Si mainly include slag basicity, and aluminum content in molten steel, tundish slag and tundish insulation material, etc. By the measures of choosing deoxidizer with Si content less than 1.5%, improving slag basicity by using the modification agent, and adopting alkali tundish, the mass fraction of molten steel increasing Si was controlled below 0.01% during the refining and continuous casting process.

Based on the principle of fiber Bragg grating (FBG), an optical fiber sensor was designed to directly measure the internal temperature of transformer winding, and the packaging technology and material of the sensor were optimized, which could solve the problems caused by thermal field and stress. After the temperature calibration experiment, the temperature calibration was carried on to the optical fiber temperature sensors. The field experiment showed that good consistency and repetition of temperature measurement were kept between the optical fiber temperature sensor and the electronic sensor, and the system’s measurement sensitivity is less than 0.1 ℃, and the measurement accuracy is up to ±0.5 ℃, which meets the requirements of the realtime online detection of the internal temperature of the transformer winding.

The outofplane displacement can be measured by using a vortex beam, Laguerre Gaussian (LG) beam, produced by computergenerated hologram (CGH) grating. Based on the principle of using the computergenerated hologram (CGH) grating to produce LG beam, the experimental scheme of the outofplane deformation measurement was designed, using the LG beam as reference light and a plane beam as object light. The object deformation was measured by the interference of object light and reference light, and the interference beam intensity formula before and after the tested object deformed was derived. Adopting the method of numerical calculation, the principle of using LG beam for the measurement of object deformation was analyzed. The numerical simulation results were in agreement with the theoretical results, which showed that by the high purity LG beam produced by CGH grating can be used for outofplane displacement measurement.

In this paper, according to the Y-shaped traffic network containing at least one upstream bottleneck and a common downstream bottleneck, the departure time choice behavior and the optimal road congestion pricing scheme during morning peak hours were investigated under tactical waiting and single step toll. Based on the assumption that the departure time choice followed the user equilibrium (UE) principle, the equilibrium departure rate and individual trip cost under different merging rules were derived. According to the departure time choice behavior, the optimal road congestion charging period and toll level were further derived. Research showed that the proposed pricing scheme could effectively decrease the total congestion of the traffic network system, however, it might lead to the increase in individual trip cost. In addition, it also found that the effectiveness of the proposed pricing scheme not only depended on the merging rules, but also depended on the relative magnitudes of the capacities of the upstream and downstream bottlenecks. Finally, the results showed that there was Braess paradox in the Yshaped traffic network, which meant that the total system travel cost could be increased when the capacity of the upstream bottleneck was increased.

To reduce the vehicle delay time at oversaturated intersections, the improved F-B signal timing model was established. The procedures of cycle calculation in this model were the same as those in F-B method. The concept of “real traffic volume” was put forward when investigating the flow rate of each approach, and the delay model was used to evaluate the F-B method and the improved FB method. The case study indicated that, compared with the F-B signal timing model, the use of improved F-B model made the delay time of two neighboring intersections of Wenhua Road/Fushan Road and Wenhua Road/Hagongda Road decrease 34.39% and 28.05% respectively. The improved model can ease traffic jam effectively, and reduce vehicle queue length, and improve the intersection service level.

In this paper, quantitative analysis of all the factors affecting train routing scheme and train formation plan was made, and the integrated planning model was established from two perspectives of passengers and operators, and related solving algorithm was put forward based on genetic algorithm. When compared with the scheme of single route and single formation, the results showed that using the optimization scheme presented in this paper by flexible formation and short routing operation could reduce 13.6% waiting time, 2.65% operating cost and 12.88% the number of serviceable car, and its feasibility was proved by sensitivity analysis.

Based on the concentrations of Cd, Hg, As, Pb, Cu and Cr in the farmland soil of ShenFu sewage irrigation regions, soil ecological and health risks were evaluated with the Hakanson Potential Ecological Risk Index and the health risk assessment model recommend by the United States Environmental Protection Agency (USEPA) in this study. The results showed that the concentrations of Cd, Hg, Pb, Cu, Cr in this region were all higher than the soil background value in Liaoning Province, and showing an increasing trend year by year. Especially, Hg and Cd pollution was more serious, and the concentrations of them were over the grade Ⅱ national soil quality standard. Although the potential ecological risks of the 90% factors in soil samples were at a moderate risk level, different ways of sewage irrigation had some effects on the risk index, and the values of risk index in the area which had been sewage irrigated up to now were higher than the others. In the potential risk of single factor, the risks of Cd and Hg were more serious than other heavy metals, and it also showed that sewage irrigation would increase the heavy metal concentration in soil, and the ecological risk indexes of soil samples were 60% and 100% above the serious level respectively. In term of the evaluation of health risk, the HQ and HI values of six kinds of heavy metals in the regions were all lower than 1, which indicates that there is no noncarcinogenic risk in this area theoretically. However, the CR and TCR values of Cr、Cd and As were all higher than the standard values of the US EPA, which mean that these heavy metals would have a high carcinogenic risk.

According to the characteristics of the high COD of the waste drilling mud extracts in Shengli Oilfield, the solidification treatment of waste mud was studied by using the composite curing agent composed of cement, fly ash, additive A and additive B. Through orthogonal experiments, the optimum mass fraction proportion of several kinds of chemicals in the treatment of waste drilling mud was found out: cement 10%, fly ash 20%, additive A 3%, additive B 0.5%. The results showed that the COD of the slurry was reduced from 896.84 mg/L to 72.35 mg/L, when the composite curing agent was used.

A good B-quasi-Ehresmann semigroup is a semigroup which has a subband B satisfying some additional conditions, in which B is called the band of projection. Orthodox semigroups, type W semigroups, orthodox supper rpp semigroups and projective orthomonoids are all good B-quasi-Ehresmann semigroups. In this paper, the characterizations of good B-quasi-Ehresmann semigroups with left semiregular bands of projections are exhibited.

To detect and control the content of trace toxic impurity 3-［4-(3-nitrobenzene sulfonyl oxygen radicals) phenyl］ propionic acid, which isessential material in the synthesis of landiolol hydrochloride drug, a HPLC with tandem mass spectrometry method was developed to determine the 3-［4-(3-nitrobenzene sulfonyl oxygen radicals) phenyl］ propionic acid in the landiolol hydrochloride crude drug. The multiple reaction monitor mode was used to eliminate the matrix effect and increase the sensitivity of the method. The limit of detection of the target analyte was 0.50 mg/kg. The recoveries of spiked samples were between 91.9% and 97.8%. The relative standard diviation value of precision experiment was 3.28%(n=6). The established method was simple, reliable, fast and low cost,which is able to meet the demand of impurities determination in crude drugs.

In this paper, based on Nd:YAG/V:YAG bonded crystal, the output characteristics of an passively Q-switched microchip laser operating at 1 338 nm was demonstrated under cw and quasicw LD endpumping. In the cw pumping region, stable Q-switched pulse was obtained with the maximum output power of 0.73 W and a pulse width of 139 ns. Under the quasicw pumping region, the phenomenon of passive modelock Q-switched was achieved, the maximum output power was 1.01 W and the pulse width was about 80 ns. Among them there was modelocked pulse train in the Q-switched pulse with single pulse width of 70 ps. The experiment results show that Nd:YAG/V:YAG bonded crystal have the advantages in obtaining 1 338 nm compact pulse laser with high output power and quasicw pumping mode can greatly decrease the thermal effects and ensure high laser output power.

Based on the principle of unsteady heat transfer, the distribution of temperature field in the rock under the action of Gauss laser beam to the rock surface was analyzed, using the temperature field distribution combined with the method of thermal stress equation to simulate thermal stress distribution of both the rock and the rock with spherical materials. The numerical simulation results show that, if treated with the same laser beam for the same time, the value of thermal stress near the edge of the inclusions caused by the rock with inclusions is bigger than that without inclusions, that is, when the same laser power and irradiation time act on the rocks with or without in them, the rocks having inclusions are more likely to break. In nature, most of the rocks contain impurities, and this work provides the theoretical basis for the laser rock breaking under conditions of rocks containing impurities.

So far much of the EMC testing of automobile electronic products was centered on the new product development stage. An EMC test method of whole life-cycle of automobile electronic products was proposed in this work. The accelerated life testing was carried out by establishing testing model, degradation model and verification model. Results reveal that in the product life span, EMC performance becomes worse with the prolonged time of use, and will exceed the EMC standards limits at some stage, which could have an adverse impact on the electromagnetic compatibility of the vehicle. This work has theoretical and practical significance to improve the reliability, security, and electromagnetic compatibility of automobile electronic products in China.