浅析影响露天矿边坡稳定主要因素及滑坡防治

随着我国露天煤矿服役时间的增长,其开采深度也逐年加深,而深度开采的采场边坡稳定显得尤为突出,它直接影响到矿区的安全、高效生产。该文针对露天矿的边坡稳定问题,综合论述了影响采场边坡稳定的主要因素,并基于各种解决边坡失稳的原理,总结了现行露天开采中对滑坡防治的有效措施。

Infrared thermography for prediction of spontaneous combustion of sulfide ores

The method of infrared thermography to predict the temperature of the sulfide ores has a large error. To solve this problem, the temperature of the sulfide ores is measured by thermal infrared imager and recording thermometric instrument contrastively. The main factors, including emissivity, distance, angle and dust concentration that affect the temperature measurement precision, are analyzed. The regression equations about the individual factors and comprehensive factors are obtained by analyzing test data. The application of the regression equations improves the precision of the thermal infrared imager. The geometric information lost in traditional infrared thermometry is determined by visualization grid method and interpolation method, the relationship between the infrared imager and geometry information is established. The geometry location can be measured exactly.

Research of Influence Factors on Apple NIR Spectroscopy Acquisition

[Objective] The aim was to optimize experimental conditions of Gala apple NIR（Near Infrared）spectroscopy acquisition through study on the accuracy of NIR spectroscopy information under different influence factors.[Method]Gala apple was taken as the experimental material,and FieldSpec3 spectrometer（Analytical Spectral Device Company,America）was employed to acquire the NIR spectroscopy at room temperature.Then,the effects of different conditions including the environmental stray light,instrument stability,different distance,different chromatic aberration,different sites and different shelf-life on spectroscopy acquisition were investigated.[Result]The stray light had a significant effect on the visible light region of NIR spectroscopy;FieldSpec3 spectrometer had higher stability in 9 h;the measure distance of 2.5-12.5 mm could obtain good repeatability of absorbance;the effects of different chromatic aberration of the same apple on spectra was acceptable;the spectral stability of equatorial plane of the apple was better than those of the bottom and stalk;at room temperature;different shelf-life could make significant influence to NIR spectroscopy of the apple simple.[Conclusion]This study will provide reference for the researchers and analysis workers of apple NIR spectroscopy.

Genetic Determination and Exogenous Influence in Sex Differentiation in Crustacean

The mechanisms of sex determination and the influence of exogenous factors on sex differentiation in crustacean were reviewed in the paper.Most of crustecea have not obviously sex chromosome.Androgenic gland was reported as the most important sex differentiation factors,implanting or cuting AG can change the sexal characterization of larval in crustacean.Although sex differentiation of crustacean is determined by gene,it is affected by exogenous factors such as parasite,photoperiod,temperature or hormone.Most cultured species have different body weight and length between male and female,this can be used in aquaculture to produce all male or female crusteceans to improve the production.

Factors Influencing Anti-ultraviolet Performance of Undyed-woven Fabrics

Main factors influencing anti-ultraviolet performance of woven fabrics are investigated. By means of detailed arrangement of sample design, sample making, testing and analyzing, it shows that fiber materials, fabric compactness, fabric weave and yarn type are the four important factors influencing anti-UV performance of woven fabric, but with different effects. Among them fiber material is the most important factor. For the common fiber materials used, it shows that the anti-UV performance of polyester is comparatively better than others. Once fiber material is determined, fabric with medium float weave and high compactness can offer a good anti-UV performance. The anti-UV performance of fabric with ＂anti-UV＂ filament yarn is better than that with ＂anti-UV＂ staple yarn. The anti-UV property of fabrics with untwisted filament yams is better than that with twist counterparts.

Influencing factors of infrared surveying in roadway

The main factors that affect infrared surveying in roadway include that property of rock, electromechanical equipments running, environmental temperature, hydrogeology and support material etc. This paper sums up the expression features of these disturbing factor through theoretical analysis and actual measurement contrasts and considers that some tunnel section does not suit to go on infrared survey, for instance, soft rock meets water to expanse, and surround rock has obviously pouring water. The basic methods had made evading disturbing of electromechanical equipments, environmental temperature and protect material etc to become possible. It is helpful that offers infrared surveying technical service for production safety better in roadway.

Characterization of Pyrolytic Lignin Extracted from Bio-oil

Bio-oil is a new liquid fuel produced by fast pyrolysis,which is a promising technology to convert bio-mass into liquid. Pyrolytic lignin extracted from bio-oil,a fine powder,contributes to the instability of bio-oil. The paper presents the structural features of three kinds of pyrolytic lignin extracted from bio-oil with different methods(WIF,HMM,and LMM) . The pyrolytic lignin samples are characterized by Fourier transform infrared spectrometer(FTIR) and X-ray photoelectron spectroscopy(XPS) . FTIR data indicate that the three pyrolytic lignin samples have similar functional groups,while the absorption intensity is different,and show characteristic vibra-tions of typical lignocellulosic material groups O H(3340-3380 cm-1) ,C H(2912-2929 cm-1) and C O(1652-1725 cm-1) . Comparison in the region(3340-3380 cm-1) indicates that WIF has more O H stretch groups than HMM and LMM. The carbon spectra are fitted to four peaks:C1,C C or C H,BE 283.5 eV;C2,C OR or C OH,BE 284.5-285.8 eV;C3,C O or HO C OR,BE 286.10-287.10 eV;C4,O C O,BE 287.5-287.7 eV. The absence of C1,C C or C H indicates the dominant polymerization structure of aro-matic carbon in pyrolytic lignin samples. For HMM and WIF,C2a and C2b can not be separated,so there is no free hydroxyl group in the samples. The oxygen peaks are also fitted to four peaks:O1,OH,BE = 530.3 eV;O2,RC O,BE 531.45-531.72 eV;O3,O C O,BE = 532.73-533.74 eV;O4,H2O,BE 535 eV. The absence of O1 and O4 indicates that little hydroxyl groups and adsorbed water are present in the samples.

Analysis on the Independent Extracurricular Practice of Students in the Specialized Dance Sport--Shenyang Sport University is Taken for Example

In this paper, the independent extracurricular practice of the students in the specialized dance sport in Shenyang Sport University is analyzed and studied, and the influencing factors and problems of the students＇ independent extracurricular practice in the specialized dance sport are further analyzed based on knowing well the current independent extracurricular practice of the students in the specialized dance sport in Shenyang Sport University, and then the corresponding countermeasures are proposed according to the existing problems. Thus, a theoretical foundation is provided for the future development and continuously deepened physical education reform of the specialized dance sport in physical education institutes.

Adaptation of Foreign Labor in Russia

The article is devoted to problems of adaptation of foreign labor in Russia. The feature of approach to analysis of the problem lies in trying to examine this process at several levels： macro-level, meso-level, micro-level, and individual level. The major factors influencing adaptation of foreign labor at each level are allocated. It is assumed between foreign workers and local communities. The author considers such aspects as the relation of local communities to arrival of foreign labor, the reasons for arrival of foreign labor to Russia and features of contact of local communities with foreign workers. This position is proved by means of a case study conducted in Yekaterinburg.

Analysis on the Factors Restricting the Entrepreneurship Quality Education for the Young Peasant Workers Back to Hometown in Yunnan Province and the Related Strategies

Entrepreneurship quality education is not only the standpoint and focus of entrepreneurship education, but also the key point in entrepreneurship education. In this paper, based on three aspects （the educated, the subjects implementing education, and external environment）, the main factors restricting the entrepreneurship quality education for the young peasant workers back to hometown in Yunnan province are analyzed, and also the governmental strategies of a clear purpose and a powerful applicability are further explored.

Study on treatment of acidic black 10B dye wastewater by chemical oxidation and adsorption of activated carbon fixed bed

Acidic black 10B dye wastewater was treated by chemical oxidation and adsorption of activated carbon fixed bed and all kinds of influential factors of removal CODcr were discussed. When the initial concentration of the dye was 150 mg/L, CODer was 432 mg/L and chrome was 2800 times, the appropriate conditions determined by the experiment were as follows： r（NaC10）--4.84 g/L, 25 min, pH=6, height of activated carbon fixed bed was 10 cm. Under these conditions, the decolorizing rate can come up to about 100% and total removed rate of CODer reached at 89.6%. Comparison of UV-Vis adsorption spectrums before and after treatment showed that decomposition effects of chemical oxidation and adsorption of activated carbon fixed bed on acidic black 10B dye wastewater were satisfactory.

China＇s Round-Tripped FDI： Trends,Determinants, and Policy Implications

With observations and reflections on a series of phenomena,such as the ＂independent situation＂of China＇s FDI during the recent global financial risis and the increase of round tripped investment after the ＂tax rate unification,＂this paper examines a unique phenomenon in China＇s FDI-round tripped investment.It reveals its determinants from a micro-perspectiv ,and establishes a vector error correction mode（VECM）for emprirical testing.The results is that the determinants of China＇s round tripped investment are institutional factors such as ＂achievable differential treatment＂ and cpaital control.Tax ,exchange rate,housing price and capital control intensity all have an impact on the scale of round tripped FDI.However,judging from the extent of influence,the most important factor should be exchange rate ,followed by capital control intensity and housing price,and tax has a limited impact.

Building towards a standardised approach to biocorrosion studies: a review of factors influencing Mg corrosion in vitro pertinent to in vivo corrosion

The factors that influence magnesium（Mg）corrosion in vitro are systematically evaluated from a review of the relevant literature. We analysed the influence of the following factors on Mg biocorrosion in vitro：（i） inorganic ions,including both anions and cations,（ii） organic components such as proteins, amino acids and vitamins, and（iii） experimental parameters such as temperature, p H, buffer system and flow rate. Considerations and recommendations towards a standardised approach to in vitro biocorrosion testing are given. Several potential simulated body fluids are recommended. Implementing a standardised approach to experimental parameters has the potential to significantly reduce variability between in vitro biocorrosion tests, and to help build towards a methodology that accurately and consistently mimics in vivo corrosion. However, there are also knowledge gaps with regard to how best to characterise the in vivo environment and corrosion mechanism. The assumption that blood plasma is the correct bodily fluid upon which to base in vitro methodologies is examined, and factors that influence the corrosion mechanism in vivo, such as specimen encapsulation, bear consideration for further studies.

从马家窑类型驳瓦西里耶夫的“中国文化西来说”

这些年来,苏修在考古、历史等各个方面加紧炮制种种谬论,为社会帝国主义的反华侵华和霸权主义效劳。瓦西里耶夫的《古代中国文明的起源》就是其中之一。瓦西里耶夫是一个自封的所谓"古代中国史专家"。他在1964年发表过一篇《关于外因影响在中国文明发生中的作用》,以种种捏造的材料贩卖臭名昭著的"中国文化西来说"。时隔十年,他又改头换面,用一些貌似客观的词句重弹旧调,宣传什么"