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| 1 | Changes in runoff and sediment load from major Chinese rivers to the Pacific Ocean over the period 1955-2010显示文摘Changes in runoff and sediment loads to the Pacific Ocean from 10 major Chinese rivers are presented in this paper.To quantitatively assess trends in runoff and sediment loads,a parameter called the 'Trend Ratio 7'' has been defined in this paper.To summarize total runoff and sediment load from these rivers,data from 17 gauging stations for the duration 1955 to 2010 has been standardized,and the missing data have been interpolated by different approaches according to specific conditions.Over the observed 56-year study period,there is a quite stable change in total runoff.Results show that the mean annual runoff flux entering the Pacific Ocean from these rivers is approximately 1,425billion cubic meters.It is found that all northern rivers within semi-arid and transitional zones including the Songhua,Liaohe,Haihe,Yellow and Huaihe rivers present declining trends in water discharge.Annual runoff in all southern rivers within humid zones including the Yangtze,Qiantang,Minjiang,Pearl and Lancang rivers docs not change much,except for the Qiantang River whose annual runoff slightly increases.The annual sediment loads of all rivers show significant declining trends;the exceptions are the Songhua and Lancang rivers whose annual sediment loads have increasing trends.However,the mean annual sediment flux carried into the Pacific Ocean decreased from 2,026million tonnes to 499 million tonnes over the 56-ycar period.During this time there were 4 distinct decreasing phases.The decrease in annual sediment flux is due to the integrated effects of human activity and climate change.The reduction in sediment flux makes it easy for reservoir operation;however,the decrease in sediment flux also creates problems,such as channel erosion,river bank collapse and the retreat of the delta area. | Cheng LIU Jueyi SUI Yun HE Faye HIRSHFIELD | 2013 | International Journal of Sediment Research2013，28，4： | 16 |
| 2 | Impacts of ice cover on local scour around semi-circular bridge abutment显示文摘The presence of ice cover in winter can significantly change the flow field around bridge abutments,which can also cause a different local scour pattern.To investigate the impacts of ice cover,results from a recent flume experiments were presented.Smooth and rough ice covers were created to investigate the impacts of ice cover roughness on the scour geometry around the semi-circular abutment.Three bed materials were used,with50D s of 0.58 mm,0.50 mm,0.47 mm respectively.Scour volume and scour area were calculated.It was found that the maximum scour depth was located 75o inclined to the flume wall.Under rough ice cover,the scour area and scour depth were the largest.An empirical equation on the maximum scour depth was also developed. | WU Peng HIRSHFIELD Faye SUI Jueyi 王军 陈胖胖 | 2014 | Journal of Hydrodynamics2014，26，1： | 13 |
| 3 | Local scour around bridge abutments under ice covered condition-an experimental study显示文摘本地人在桥牌附近搜索桥墩是一个活跃研究话题许多十年了。但是很少的研究在本地人上关于冰盖子的影响被进行了在桥桥墩附近搜索现象。盖住的斜槽试验的一系列冰在这研究被进行。在本地人的类型搜索的不同桥墩的形状因素被比较。在冰盖子下面,为半圆形的桥墩的形状因素从 0.66 ∼0.71 。三不同不一致的沉积与 D 50 0.58 公里, 0.50 公里,和 0.47 公里的 s 分别地。冰的二种类型盖住,也就是光滑、不平的盖子,被创造在桥墩附近模仿冰盖子的影响。最大搜索深度在不同条件下面被分析。scour 洞的轮廓被阴谋在桥桥墩附近显示出床形态学和沉积免职。在最大值之间的一种实验关系搜索深度, densimetric 弗鲁德数字和沉积尺寸被开发。 | Peng WU Faye HIRSHFIELD Jue-yi SUI | 2015 | International Journal of Sediment Research2015，30，1： | 5 |
| 4 | Mechanisms of ice accumulation in a river bend-an experimental study显示文摘在这研究,在不同流动和冰分泌物的条件下面,广泛的实验在 180 | Jun WANG Jue-yi SUI Hong-ya ZHANG Pang-pang CHEN Faye HIRSHFIELD | 2012 | International Journal of Sediment Research2012，27，4： | 2 |
| 5 | Theory of gyrotrontravelingwave amplifiers显示文摘 | Li Q F Park S Y Hirshfield J IJ | 1986 | IEEE Trans on Microwave Theory and Techniques1986，34，10： | 1 |
| 6 | Effect of Bcl-2 on the primordial follicle endowment in the mouse ovary 显示文摘 | Flaws J A Hirshfield A N Judith A H | 2001 | Biol Reprod2001，64，4： | 1 |
| 7 | Development of follicles in the mammalian ovary 显示文摘 | Hirshfield AN | 1991 | Int Rev Cytol1991，124，： | 1 |
| 8 | Expression of neurotrophins and their receptors in the mammalian ovary is developmentally regulated: changes at the time of folliculogenesis显示文摘 | Dissen G A newman Hirshfield A Malamed S | 1995 | Endocrinology1995，，136： | 1 |
| 9 | Electron Cyclotron Maser显示文摘 | Hirshfield J L Wachtel J M | 1964 | Phys Rev Lett1964，12，19： | 1 |
| 10 | The effects of head-down tilton carotid blood flow and pulm onary gasexchange显示文摘 | LOEPPKY J A HIRSHFIELD D W ELBRIDGE M W | 1987 | Aviat Space Env Med1987，58，7： | 1 |
| 11 | MDM2 SNP309 accelerates tumor formation in a gender specific and hormone-dependent manner显示文摘 | BOND G L HIRSHFIELD K M KIRCHHOFF T | 2006 | Cancer Res2006，66，10： | 1 |
| 12 | Particular influence of leueine peptides on lysyl-transfer ribonueleic acid ligase formation in a mutant of Escherichia coil K-12显示文摘 | Buklad NE Sanborn D Hirshfield IN | 1973 | J Bacteriol1973，116，3： | 1 |
| 13 | Effect of Bcl-2 on the primordial follicle endowment in the mouse ovary 显示文摘 | Ftaws JA Hirshfield AN Hewitt JA | 2001 | Biol Reprod2001，64，4： | 1 |
| 14 | Effect ofbcl-2 on the primordial follicle endowment in the mouseovary 显示文摘 | Flaws J A Hirshfield A N Hewitt J A | 2001 | Biol Reprod2001，64，4： | 1 |
| 15 | The changing architecture of the neonatal rat ovary during histogenesis显示文摘 | RAJAH R GLASER E M HIRSHFIELD A N | 1992 | DevDyn1992，194，： | 1 |
| 16 | Theca cells may be present at the outset of follicu-lar growth显示文摘 | Hirshfield A N | 1991 | Biol Reprod1991，44，6： | 1 |
| 17 | Development of follicles in the mammalian ovary显示文摘 | HIRSHFIELD A N | 1991 | Internat Rev Cytol1991，124，： | 1 |
| 18 | New Concepts for Quasi-Optical Structures for Use with Gyrotron Systems显示文摘 | Petelin M Erckmann V Hirshfield J | 2009 | IEEE Trans Electron Devices2009，56，5： | 1 |
| 19 | Morphometric analysis of follicular Development in the rat 显示文摘 | Hirshfield AN Midgleg AR | 1978 | Biol Reprod1978，19，3： | 1 |
| 20 | Expression of neurotrophins and their receptors in themammalian ovary is developmentally regulated changes at the time of folliculogenesis显示文摘 | Dissen G A Hirshfield A N Malamed S | 1995 | Endocrinology1995，136，： | 1 |
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