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| 1 | ERODIBILITY CRITERION FOR AUXILIARY SPILLWAYS OF DAMS显示文摘The ability to reliably design auxiliary spillways has become a pressing requirement because of the very large number of dams involved. An empirical classification index representing the erosional resistance of the overall range of particulate, jointed, and intact earth materials is presented and correlated for a number of practical cases from Arkansas and Kansas in the United States of America and from South Africa with the specific stream power of flows observed to be associated with various degrees of erosion. The United States Department of Agriculture data base and the format in which the dare were prepared for the purposes herein, are deseribed in detail. The modes of erosion that occur in spillways are defined.Guidelines are provided for evaluating the failure status of an erosion damaged spillway that enables determination of whether the incident specific stream power exceeded, equalled, or fell below the erosional resistance of various sections of the ground profile affected. The correlation function between specific stream power and erodibility index provides the required design criterion. | Hendrik A. D. Kirsten (Steffen, Robertson, and Kirsten, Ine., Box 55291 Northlands 2116, S. Africa)John S. Moore(Natural Resources Conservation Service, USDA, Box 2890, Washington, DC 20013)Louis H. Kirsten(Civil & Structural Engineering Dept., Iscor Mini | 2000 | International Journal of Sediment Research2000，15，1： | 4 |
| 2 | Antidepressant treatment and worsening white matter on serial cranial magnetic resonance imaging in the elderly : the cardiovascular health study 显示文摘 | Steffens DC Chung H Krishnan KR | 2008 | Stroke2008，39，： | 1 |
| 3 | Bupropion SR in the naturalistic treatment of elderly patients with major depression 显示文摘 | STEFFENS DC DORAISWAMY PM MCQUOID DR | 2001 | Geriatr Psychiatry2001，16，9： | 1 |
| 4 | Cerebrovascular diseaseand depression symptoms in the cardiovascular health study显示文摘 | Steffens DC Helms MJ Krisnnan KR | 1999 | Stroke1999，30，10： | 1 |
| 5 | Hippocam-pal volume and incident dementia in geriatric depression显示文摘 | Steffens DC Payne ME Greenberg DL | | 0，，1： | 1 |
| 6 | Hormone replacement therapy and incidence of Alzheimer disease in older women:the cache county study显示文摘 | Zandi PP Carlson MC Plassman BL Welsh-Bohmer KA Mayer LS Steffens DC | 2002 | JAMA2002，288，： | 1 |
| 7 | Biochemical abnormalities of the medial temporal lobe and medial prefrontal cor- tex in late-life depression 显示文摘 | Venkatraman TN Krishnan RR Steffens DC | 2009 | Psychiatry Res2009，172，1： | 1 |
| 8 | Amnestic mild cognitive impair- ment and incident dementia and Atzheimer's disease in geriatric de- pression 显示文摘 | Steffens DC McQuoid DR Potter GG | 2014 | Int Psychogeriatr2014，26，12： | 1 |
| 9 | Contribution of depression to cogni- tive impairment and dementia in older adults 显示文摘 | Potter GG Steffens DC | 2007 | Neurologist2007，13，3： | 1 |
| 10 | Progression of subcortjcal isehemie disease from vascular depression to vascular dementia显示文摘 | Taylor WD Krishnan KR | 2003 | Am J Psychiatry2003，160，： | 1 |
| 11 | Establishing diagnostic criteria for vascular depression显示文摘 | Steffens Dc | 2004 | J Neural Sci2004，226，： | 1 |
| 12 | Hippocampal volume and incident dementia in geriatric depression显示文摘 | Steffens DC Payne ME Greenberg DL | 2002 | Am J Geriatr Psychiatry2002，10，1： | 1 |
| 13 | Cerebrovaseular disease and depression symptoms in the cardiovascular health study 显示文摘 | Steffens DC Helms M J Krishnan KR | 1999 | Stroke1999，30，10： | 1 |
| 14 | Structural integrity of the uncinate fasciculus and resting state functional connectivity of the ventral prefrontal cortex in late life depression 显示文摘 | Steffens DC Taylor WD Denny KL | 2011 | PLoS One2011，6，22： | 1 |
| 15 | Prevalence of depression and its treatment in an elderly population:the Cache county study显示文摘 | Steffens DC Skoog L Norton MC | 2000 | Arch Gen Psychiatry2000，57，： | 1 |
| 16 | Bupropion SR in the naturalistic treatment of elderly patients with major depression显示文摘 | Steffens DC Doraiswamy PM McQuoid DR | 2001 | Int J Geriatr Psychiatry2001，16，9： | 1 |
| 17 | Age-dependent reduction of amygdala volume in bipolar disorder显示文摘 | Doty TJ Payne ME Steffens DC | 2008 | Psyc-hiatry Res2008，163，1： | 1 |
| 18 | Allelic differences in the serotonin transporter-linked polymorphic region in geriatric depression显示文摘 | Steffens DC Svenson I Marchuk DA | 2000 | Am J Geriatr Psychiatry2000，10，2： | 1 |
| 19 | Amnestic mild cognitive impairment and incident dementia and Alzheimer’s disease in geriatric depression显示文摘 | Steffens DC McQuoid DR Potter GG | 2014 | Int Psychogeriatr2014，26，12： | 1 |
| 20 | Symptomatic remission in patients with bipolar mania:results from a double-blind,placebo-controlled trial of risperidone monotherapy显示文摘 | Gopal S Steffens DC Kramer ML | 2005 | J Clin Psychiatry2005，66，8： | 1 |
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