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| 1 | Agrobacterium - mediated trans- formation of Fraxinus pennsylva nica hypocotyls and plant re- generation 显示文摘 | Ningxia Du Paula M Pijut | 2009 | Plant Cell Rep2009，28，： | 1 |
| 2 | A Vertical and Horizontal Comparison of Sustainable Development Status in Western China from the Perspective of Ecological Footprint显示文摘On the basis of ecological footprint theory, the ecological footprint and ecological carrying capacity of western China and 12 provinces and cities in 2009 are calculated. From the perspective of ecological footprint, the sustainable development status of west China and 12 provinces and cities in 2009 and 1999 are compared vertically and horizontally. Results assume that no matter weighting by using local or national ecological carrying capacity, the west area laid in the unsustainable development state in 2009; in 1999, the west area was on the unsustainable development stage taking the local and national level as the reference and it was at the sustainable stage at the global level. In 2009, most provinces in western China laid on the unsustainable stage at the local, national and global level. Compared with that in 2009,few provinces in western China were on the unsustainable stage at different levels. In general, the sustainable developmental momentum of western China in 2009 was weaker than that in ten years ago and many provinces and cities decreased to unsustainable state. | DU Hui-ying1, DONG Hong-lin1, JIN Bo2 1. Integrated Agricultural Research Center of Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China 2. Cultural Heritage Management Office of Pingluo County of Ningxia Hui Nationality Autonomous Region, Pingluo 753400, China | 2011 | Asian Agricultural Research2011，3，8： | 1 |
| 3 | Singular Integral Equations with Cosecant Kernel in Solutions with Singularities of High Order显示文摘We have discussed and solved the boundary value problem with period 2 a π and the singular integral equation with kernel csc t-t 0a in solution having singularities of high order, where the smooth contour of integration is in the strip 0 | HAN Hui-li 1,2 ,DU Jin-yuan 1,3 1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, Hubei, China 2. School of Mathematics and Computer, Ningxia University, Yinchuan 750021, Ningxia, China 3. Department of Mathematics, Hubei Institute for Nationalities, Enshi 445000, Hubei, China | 2005 | Wuhan University Journal of Natural Sciences2005，10，2： | 0 |
| 4 | Investigation of True Ni^(2+)-Halide Distances in Alkali Halide Lattices显示文摘Using the μKα model of Ni2+-6X- cluster, the true distances between impurity Ni2+ cation and halide anion in alkali halide lattices are estimated from the optical spectra data. The results suggest that the true impurity cation- ligand anion distances are close to the sum of ionic radii of the impurity cation and ligand anion but not the cation - anion distance of the perfect lattices in the case of that the ionic radius of host cation is more larger than that of impurity | Xuanrong MA(Department of Physics, Ningxia University, Yinchuan, 750021, China)Maolu DU(Institute of Solid State Physics, Sichuan Normal University, Chengdu, 610066, China)(To whom correspondence should be addressed) | 1994 | Journal of Materials Science & Technology1994，10，2： | 0 |
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