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| 1 | Recent Trends and Recommendations for Nitrogen Fertilization in Intensive Agriculture in Eastern China显示文摘The Taihu Region in eastern China is one of China's most intensive agricultural regions and also one of the economically most developed areas. High nitrogen balance surpluses in the summer rice-winter wheat double-cropping systems are leading to large-scale non-point source pollution of aquifers. In an interdisciplinary approach, four-year (1995-1998) field trials were carried out in two representative areas (Jurong County and Wuxi City) of the Taihu Region. Five farmers' field sites were chosen in each of the 2 locations, with each site divided into 'standard' (farmers' practice) and 'reduced' (by 30%-40%) N fertilization. For both fertilization intensities, N balance surpluses and monetary returns from grain sales minus fertilizer expenditures were calculated in an economic assessment. Based on the field trials, the mineral N fertilizer application rates reduced by about 10% for rice and 20%-30% for wheat were recommended in 1999. Since 1999, the research focused on the trends in N fertilizer application rates and changes in grain and agricultural commodities prices.Summer rice N fertilizer use, in Wuxi City as of 2001, dropped by roughly 25%, while for winter wheat it decreased by 10%-20%, compared to the 1995-1998 period. This has been achieved not only by grain policy and price changes, but also by an increased environmental awareness from government officials. Nitrogen balance surpluses in Anzhen Town (of Wuxi City) have consequently diminished by 50%-75% in rice and by up to 40% in wheat, with reductions being achieved without concomitant decreases in physical grain yields or returns from sales minus fertilizer costs. | M.ROELCKE HANYong K.H.SCHLEEF ZHUJian-Guo LIUGang CAIZu-Cong J.RICHTER | 2004 | Pedosphere2004，14，4： | 54 |
| 2 | Philip入渗公式标定计算的改进显示文摘本文介绍了对Philip入渗公式的一种新的标定计算方法,并对计算结果进行了讨论。 | 秦耀东 R.Anlauf J.Richter | 1989 | 水利学报1989，21，9： | 9 |
| 3 | Increased Variance of P Wave Duration on the Electrocardiogram Distinguishes Patients with Idiopathic Paroxysmal Atrial Fibrillation显示文摘 | GEORGE K.ANDRIKOPOULOS POLYCHRONIS E.DILAVERIS DIMITRIS J.RICHTER ELIAS J.GIALAFOS ANDREAS G.SYNETOS JOHN E.GIALAFOS | 2006 | Pacing and Clinical Electrophysiology2006，，7： | 3 |
| 4 | 重症肌无力时的胸腺切除术——研究现状显示文摘重症肌无力属自身免疫性疾病。在治疗上需根据个体差异给予抗胆碱酯酶剂。有时辅助采用肾上腺皮质激素、免疫抑制剂、免疫球蛋白,血浆交换疗法作为胸腺切除术前的辅助治疗。 胸腺切除术与重症肌无力的关系于1901年即有描述。自Saubruch于1912年报道1例肌无力患者在切除增大的胸腺后症状明显改善,从此胸腺切除术作为治疗重症肌无力的常用方法之一逐渐被采纳。 目前的争论之处在于手术的时机。 | W.Schulze A.Laczkovics J.Richter E.Sindern 牛洪泉 | 1999 | 德国医学1999，16，5： | 1 |
| 5 | 方式、媒体和过时论谎言显示文摘本文作者是Community of Agile Partners in Education的首席执行官,他在文中论述了“媒体没有‘过时’,只有‘适用’”的观点。我们认为这种观点对我国发展远程教育很有启发意义。我国远程教育起步晚,技术上和经济发展方面地域差异大,因此,如何结合我国国情,在发展我国远程教育的进程中,把传统的媒体与现代教育技术有机结合起来,根据各地的实际情况,在媒体的使用上有所侧重,而不是一味追求“高、精、尖、新”,具有一定的现实意义。换言之,不考虑国情,不考虑地域差异,唯“高、精、尖、新”为上,那么,我们对远程教育的投入就难以保证有高成本效益,也不见得就能取得预期效果。 | Gerald J.Richter 肖俊洪 | 2000 | 中国远程教育2000，，8： | 1 |
| 6 | 直流传动改为交流传动的维也纳地铁车辆显示文摘交流传动优于直流传动已众所周知,现在维也纳地铁正在将部分直流传动车辆改造成交流传动,这样做有许多好处:与购置新车辆相比,改造是一个较为经济的替代方案,又能保证必要的车辆数,而且有较高的可用性和可靠性。文章主要叙述车辆改造的情况。 | J.Richter 李益丰 | 2000 | 大功率变流技术2000，0，6： | 0 |
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