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| 1 | Dissimilatory Fe(Ⅲ) reduction characteristics of paddy soil extract cultures treated with glucose or fatty acids显示文摘Dissimilatory Fe(Ⅲ) reduction is a universal process with irreplaceable biological and environmental importance in anoxic environments. Our knowledge about Fe(Ⅲ) reduction predominantly comes from pure cultures of dissimilatory Fe(Ⅲ) reducing bacteria (DFRB). The objective of this study was to compare the effects of glucose and a selection of short organic acids (citrate, succinate, pyruvate, propionate, acetate, and formate) on Fe(Ⅲ) reduction via the anaerobic culture of three paddy soil solutions with Fe(OH)3 as the sole electron acceptor. The results showed significant differences in Fe(Ⅲ) reduction among the three paddy soil solutions and substrate types. Bacteria from the Sichuan paddy soil responded quickly to substrate supply and showed higher Fe(Ⅲ) reducing activity than the other two soil types. Bacteria in the Jiangxi paddy soil culture solution could not use propionate as a source of electrons for Fe(Ⅲ) reduction. Similarly, bacteria in the Jilin paddy soil culture could not use succinate effectively. Pyruvate was readily used by cultures from all three paddy soil solutions, thus indicating that there were some similarities in substrate utilization by bacteria for Fe(Ⅲ) reduction. The use of glucose and citrate as substrate for dissimilatory Fe(Ⅲ) reduction indicates important ecological implications for this type of anoxic respiration. | HE Jiangzhou1,2, QU Dong1, 1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China.2. Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Tarim University, Alar, Xinjiang Uygur Autonomous Region, Xinjiang 843300, China | 2008 | Journal of Environmental Sciences2008，20，9： | 24 |
| 2 | Quantitative analysis of rockburst for surrounding rocks and zonal disintegration mechanism in deep tunnels显示文摘Rock masses without pre-existing macrocracks can usually be considered as granular materials with only microcracks.During the excavation of the tunnels,microcracks may nucleate,grow and propagate through the rock matrix;secondary microcracks may appear,and discontinuous and incompatible deformation of rock masses may occur.The classical continuum elastoplastic theory is not suitable for analyzing discontinuous and incompatible deformation of rock masses.Based on non-Euclidean model of the discontinuous and incompatible deformation of rock masses,the distribution of stresses in the surrounding rock masses in deep tunnels is fluctuant or wave-like.The stress concentration at the tips of microcracks located in vicinity of stress wave crest is comparatively large,which may lead to the unstable growth and coalescence of secondary microcracks,and consequently the occurrence of fractured zones.On the other hand,the stress concentration at the tips of microcracks located around stress wave trough is relatively small,which may lead to the arrest of microcracks,and thus the non-fractured zones.The alternate appearance of stress wave crest and trough thus may induce the alternate occurrence of fractured and non-fractured zones in deep rock masses.For brittle rocks,the dissipated energy of microcrack growth is small,but the elastic strain energy stored in rock masses may be larger than the dissipated energy growths of pre-existing microcracks and secondary microcracks.The sudden release of the residual elastic strain energy may lead to rockburst.Based on this understanding,the criteria of rockburst are established.Furthermore,the relationship between rockbursts and zonal disintegration in the surrounding rock masses around deep tunnels is studied.The influences of the in-situ stresses and the physico-mechanical parameters on the distribution of rockburst zones and the ejection velocity of rock fragments are investigated in detail. | Qihu Qian1,Xiaoping Zhou2 1 Engineering Institute of Engineering Corps,PLA University of Science and Technology,Nanjing,210007,China 2 School of Civil Engineering,Chongqing University,Chongqing,400045,China | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，1： | 6 |
| 3 | EFFECTIVE DISCHARGE CALCULATION GUIDE显示文摘This paper presents a procedure for calculating the effective discharge for rivers with alluvial channels. An alluvial river adjusts the bankfull shape and dimensions of its channel to the wide range of flows that mobilize the boundary sediments. It has been shown that time-averaged river morphology is adjusted to the flow that, over a prolonged period, transports most sediment. This is termed the effective discharge. The effective discharge mayo be calculated provided that the necessary data are available or can be synthesized. The procedure for effective discharge calculation presented here is designed to have general applicability, have the capability to be applied consistently, and represent the effects of physical processes responsible for determining the channel. dimensions. An example of the calculations necessary and applications of the effective discharge concept are presented. | D. S. BIEDENHARN,C. R. THORNE, P.J.SOAR. ,R.D.HEY, and C. C. WATSONS 1 Engineer, U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, MS 39180, USA. 2Professor School of Geography, University of Nottingham, Nottingham NG7 2RD, UK. 3 Prof | 2001 | International Journal of Sediment Research2001，16，4： | 5 |
| 4 | 中国松香工业概况(英文)显示文摘松香是一种具有重大经济价值的天然树脂。作为重要的化工原料 ,松香被广泛应用于造纸、胶粘剂、油漆涂料、油墨、橡胶、食品等工业。本文将通过阐述中国松香工业的历史、现状及发展前景 ,从宏观角度对中国松香工业作一个概述。 | China Golddragon Rosin Group Corp, Beijing 100714, China) | 2004 | 林产化学与工业2004，24，B08： | 4 |
| 5 | NEW ACHIEVEMENTS ON THE THEORY AND TECHNOLOGY OF EXPLOSIVE WELDING显示文摘There are four new achievements of this work on the theory and technology of explosive welding.(1) It has been found and defined three kinds of bonding interfaces: big wavy, small wavy and micro wavy, and the micro wavy interface is the best. In a cladding plate,it is for the first time to find that the form of interface presents regular distribution.(2) Although the interface has the features of melt, diffusion and pressure welding in the mean time, the seam and 'hole' brought by the melt weaken the bonding strength of interface greatly, and the effect of melt on interface must be eliminated in explosive welding, so explosive welding is not a melt weld. The diffusion welding is a kind of form of pressure welding, and the diffusion is not the reason of the bonding of interface but the result of interface high pressure. So the diffusion welding cannot also explain the bonding mechanism of it. The experiment and theory make clear that explosive welding is a special pressure one.(3) To get good interface of no melt, explosive charge must be selected on the low limit of welding windows. In explosive welding, the drive plate should be treated as the viscous and plastoelastic body, not incompressible fluid. The bending moment under the explosive welding loading must be greater than that under dynamic limit of drive plate. According to the condition, the lower limit of explosive welding is obtained. It is about 20% less than that obtained by tradition calculation, and suitable for engineering application.(4) It is for the first time to test and study on soil anvil characteristics and change regularity under explosive welding impact loading. Through soil anvil parameter optimization analysis, it is the best for explosive welding with sandy soil of water content 17.00% and density 1.74g/cm3. | C.G. Shi, Y.H. Wang, L.G. Cai and C.H. ZhouEngineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，6： | 4 |
| 6 | Research on Horizontal Vibration of Heavy-Weight Drill Pipes in Directional Drilling显示文摘The mode of load and deformation of directional drilling string and the expression of trigonometric series of deflection equation are established by means of elastic deformation energy and of the vertical and horizontal bending. A calculation formula for natural frequency of horizontal resonance and rotational speed is derived based on the calculation method by Ritz, with which analysis is made for the cause and affecting factors of the excessive abrasion of heavy-weight drill pipe in high-angle holes so as to provide reference and basis for rational selection of drilling parameters and drilling tools in the future high-angle directional drilling. | Jiang Wei Wang Lan Engineer, Drilling Department of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin Engineer, Well Testing Company of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin | 1992 | China Ocean Engineering1992，7，4： | 3 |
| 7 | 用于VXI测试的虚拟仪器和传统仪器的比较显示文摘作为不同于传统仪器的另一种选择,虚拟仪器的概念已经存在很多年了。一台虚拟仪器由几个功能模块组成,通过软件进行组态,可以模拟一个或更多个传统仪器。 尽管虚拟仪器能够提供较传统的专用仪器更好的性能价格比,但是将虚拟仪器的概念应用到实际仪器中对测试和测量厂家而言有很大挑战性。而VXI总线标准的发表和当今处理器所具有的高性能的计算能力,为创造一个开放的虚拟仪器系统提供方法。 | 金鑫 Analogic Corp Paul Benneff | 1994 | 国外电子测量技术1994，13，2： | 3 |
| 8 | Study on the characterization of the surface topography of friction pairs during wear process with fractal theory显示文摘Wear of machine parts is an important problem in operating life of machines. Rationalwear and running-in procedures are able to machine parts improve in conformity, surface topog-raphy and frictional compatibility during usage, therefore improving machine reliability and pro-longing its operating life. Hence, it is necessary to study the topography characterization of thesurfaces of friction pairs and its change laws in wear or running-in process. This paper appliesfractal theory to study the characterization of the worn surface topographies of friction pairs duringthe initial stage of wear process. Experimental researches show that the fractal parameters of thesurface topographies of friction pairs will reach their steady-state values, respectively, with thewear process going on. And the variations of the fractal parameters have corresponding laws fortwo samples of friction pairs. | ZHU Hua GE Shirong WANG Haihu CAO Jianwen CHEN Guoan 1. China University of Mining and Technology, Xuzhou 221008, China 2. Command Institute of the Corps of Engineers, Xuzhou 221004, China | 2001 | Science China Mathematics2001，44，S1： | 3 |
| 9 | LABORATORY MEASUREMENTS IN SINE-GENERATED MEANDERING CHANNELS显示文摘The patterns (In flow plan) of rough turbulent steady flows in sine-generated meandering streams are investigated experimentally. The flow cross-section is rectangular, the flow width is uniform, the channel bed is flat; the plan shape is sine-generated. In contrast to previous works, where the computed flow patterns were of the same character, irrespective of the sinuosity of the channel, it is found, on the basis of present experiments, that every different Plan geometry of a meandering flow has its own flow picture. In the case of 'small' sinuosity, the flow convectively accelerates at the inner bank between the crossover-and apexsections; if, however, the sinuosity is 'large', the now convectively decelerates in the same region. The convergence-divergence areas (in flow Plan) of the present flows are in coincidence with the location of erosion-deposition zones in meandering streams, confirming that the convective behaviour of the vertically-averaged flow alone is sufficient to induce the bed and bank deformation. | A. M. Ferreira da SILVA and M. S YALIN (1 Research Hydraulic Engineer, Hydraulics Laboratory, Waterways Experiment Station, U. S. Army Corps of Engineers, Vicksburg, Mississippi. 2 Emeritus Professor, Department of Civil Engineering, Queen’s University, K | 1997 | International Journal of Sediment Research1997，12，1： | 2 |
| 10 | Studies on Human Fetal Lens Crystallins Under Oxidative Stress and Protective Effects of Tea Polyphenols显示文摘Purpose: To investigate the oxidative modification of water-soluble crystallins of human fetal lens with H2O2 and fourteen metal ions with or without EDTA. Tea-polyphenols (TP) was added to above solutions in order to testing their antioxidative abilities. Methods: The experiments were performed at 37℃ with final concentration of 2.5mg/ml protein, 0.1 mM metal ions, 0.3 mM EDTA and 1.0 mM H2O2. Then the TP was added to the solution with CuSO4 and H2O2, after 5 or 24 hours, the crystallins were analysed with SDS-PAGE and IEF.Results : There were marked oxidative modifications of lens protein in H2O2 and copper without EDTA. In SDS-PAGE patterns, we found an increase in those species above of bands higher than 30 kD and some diffuse bands from 30 to 17 kD after 5 hours. In IEF patterns, there were a general increase on acidity with loss of the more basic species. When the TP was added, there was not any difference with control group.Conclusion: The results indicate that exposure of water-soluble | Hui Xiang, Suhua Pan, Shaozhen LiGuangdong Provincial Corps Hospital, Chinese People’ s Armed Police Forces, Guangzhou 510010, China Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou 510060, China | 1998 | 眼科学报1998，14，3： | 2 |
| 11 | 高压压铸工艺中冲击压力的控制(上)显示文摘描述了对各种控制飞边方法的调查结果和实时闭环压射控制系统在控制冲击压力方面的应用。通过使用一套综合性的工艺监测系统和一个七阶段实时闭环压射控制系统,对采用高压压铸工艺,制造各种压铸件的生产方法进行了分析,论述了实现低冲击控制系统的要求和带来的好处。 | Tymac Controls Corp | 1998 | 特种铸造及有色合金1998，18，5： | 2 |
| 12 | Wound contracture in the hooded rat in relation to skin tension lines and depth of injury显示文摘 | Corps B V | 1969 | Br J Plast Surg1969，22，1： | 1 |
| 13 | EM 1110-2-2300 Engineering and design earth and rock-fill dams-general design and construction considerations显示文摘 | US Army Corps of Engineers | 1994 | Engineer Manual1994，，： | 1 |
| 14 | An emerging Biometric API Industry Standard显示文摘 | Catherine J Tilton SafLink Corp | 2000 | IEEE Computer2000，02，： | 1 |
| 15 | Intestinal fructose absorption: clinical and molecular aspects 显示文摘 | Corpe CP Burant CF Hoekstra JH | 1999 | J Pediatr Gastroenterol Nutr1999，28，4： | 1 |
| 16 | In vivo dynamics of innate immune sentinels in the CNS 显示文摘 | Nayak D Zinselmeyer BH Corps KN | 2012 | Intravital2012，1，2： | 1 |
| 17 | Inflammation and neuroprotection in traumatic brain injury 显示文摘 | Corps KN Roth TL McGaverrl DB | 2015 | JAMA Neu- rol2015，72，3： | 1 |
| 18 | Inflammation and neuropmtection in traumatic brain injury 显示文摘 | Corps KN Roth TL MeGavern DB | 2015 | JAMA Neurol2015，72，3： | 1 |
| 19 | Ciprofloxacin enchances the stimulation of matrix metalloproteinase 3 expression by interleukin-1 beta in human tendon-derived ceils 显示文摘 | Corps AN Harrall RL Curry VA | 2002 | Arthritis Rheum2002，46，11： | 1 |
| 20 | Intestinal fructose absorption:clinical and molecular aspects显示文摘 | Corpe CP Burant CF Hoekstra JH | 1999 | J Pediatr Gastroenterol Nutr1999，28，4： | 1 |
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