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| 1 | 施肥对羊草草原土壤氮素转化的影响显示文摘施肥是常用的草地管理方式之一,对维持草地生产力和草地生态系统健康至关重要。本文以河北沽源羊草草原为对象,设置了5种施肥处理,研究了施肥对半干旱羊草草原土壤氮素形态及转化特征的影响。结果表明:在牧草整个生长季,氮磷配施处理土壤铵态氮和硝态氮含量低于相应的单施氮肥处理。氮肥施入改变了草地土壤氮矿化模式。在5-8月氮素添加各处理的土壤硝化作用强烈,明显高于其他处理,氮素添加处理土壤净氮矿化量在5-7月较大,其矿化量占整个生长季的57.58%~68.97%。土壤铵态氮含量与土壤硝态氮含量、净硝化量、净矿化量、土壤温度和土壤水分均存在显著正相关关系(P〈0.05),土壤硝态氮含量与土壤温度有极显著正相关关系(r=0.491,P〈0.01)。高氮添加处理增加了硝态氮淋溶损失和污染环境的风险。 | 秦燕 何峰 仝宗永 谢开云 王栋 Gammal 权国玲 宋谦 王虎 张威震 李向林 | 2016 | 草业学报2016，25，10： | 11 |
| 2 | 用等离子旋转电极工艺生产高氮钢显示文摘为了寻求高效、经济的高氮钢生产工艺,用等离子旋转电极工艺(PREP)生产高氮钢并测试了所生产的几种典型高氮钢的性能。结果表明,氮可显著地提高奥氏体不锈钢1 4301的室温及高温强度;氮可以提高马氏体不锈钢的强度。为保证高氮马氏体不锈钢的淬透性,应根据氮含量适当降低其碳含量或提高铬含量。对于铬含量为17%的马氏体不锈钢1 4122,其碳和氮的总含量不应超过0 65%;当氮含量达到0 24%时,铁素体不锈钢1 4016转变成为马氏体钢,其强度高于碳和氮的总含量与其相当的普通马氏体不锈钢1 4122。 | 陶宇 Tarek El Gammal | 2004 | 钢铁研究学报2004，16，1： | 7 |
| 3 | Experimental Study on Deoxidization of Bariumand Barium Alloy显示文摘Based on the review of latest papers related to the application of barium alloy, the deoxidizationeffects of barium and barium alloy, and the dynamic characteristics of molten bath have beensystematically studied by means of the convection free bath, natural convection bath, air andvacuum induction melting experiments. It was found that both the total oxygen content andsoluble oxygen content in molten bath decreased rapidly. The results obtained provided practicaland theoretical basis for further synthetic applications of barium alloy in metallurgical industry. | Shi, YF Chen, BP Fu, J El Gammal, T | 1999 | Journal of Materials Science & Technology1999，15，5： | 4 |
| 4 | Formation of enzymes by biodegradation of agricultural wastes with white rot fungi显示文摘 | Nadia H Abd E1 - Nasser Samia MHelmy Amira A E1 - Gammal | 1997 | Polymer Degradation and Stability1997，55，： | 2 |
| 5 | High Nitrogen Steel Powder for NearNet Shape Products 显示文摘 | Tao Y Gammal T El | 1999 | Steel Research1999，70，45： | 2 |
| 6 | Hypertrophy after free vascularized fibular transfer to the lower limb显示文摘 | EI Gammal TA EI-Sayed A Kotb MM | 2002 | Microsurgery2002，22，8： | 1 |
| 7 | Measurement of the normal cervical cord by metrizamide myelography显示文摘 | Devkota J El Gammal T Lucke JF | 1982 | South Med J1982，75，11： | 1 |
| 8 | MR myelography: imaging findings显示文摘 | Gammal TE Brooks BS Freedy RM | 1995 | AJR1995，164，1： | 1 |
| 9 | Inversionsgieben-Ein Neues Verfahren Zur Herstellung Endabmessungsnah Gegossener Bander显示文摘 | Plesch iu tschnigg F P Hagen I V Gammal T E | 1994 | Stahlund Eisen1994，114，2： | 1 |
| 10 | The role of CK7, Ki‐67, CD34 and vimentin in the differentiation between biliary atresia and idiopathic neonatal hepatitis in Egyptian cholestatic neonates显示文摘 | HAYAM ABDEL SAMIE AIAD MONA ABDEL HALIM KANDIL REHAB MONIR SAMAKA MERVAT MAHMOUD SULTAN MOHAMED TAWFIK BADR GAMMAL ELDIN MAHMOUD NADA | 2012 | APMIS2012，，7： | 1 |
| 11 | Fractional Flow Reserve: A Useful Index to Evaluate the Influence of an Epicardial Coronary Stenosis on Myocardial Blood Flow显示文摘 | Nico H.J. Pijls Berry Van Gelder Pepijn Van der Voort Kathinka Peels Frank A.L.E. Bracke Hans Bonnier Mamdouh I.H. El Gammal | 1995 | Circulation1995，，： | 1 |
| 12 | Efficient kernel density estimation using the fast Gauss transform for computer vision 显示文摘 | EI GAMMAL A DURAISWAMI R DAVIS L S | 2003 | IEEE Transactions on Pattern Analysis and Machine Intelligence2003，25，11： | 1 |
| 13 | Achievable rates for multiple deseriptions显示文摘 | Gammal A A El Cover T M | 1982 | IEEE Transactions on Infromation Theory1982，28，6： | 1 |
| 14 | The Hydrodynamic Effects of Single Phase Flow on Flow Accelerated Corrosion in a 90-degree Elbow显示文摘 | Gammal M E Mazhar H Cotton J S | 2010 | Nu- clear Engineering and Design2010，，240： | 1 |
| 15 | Chaos in collapsing Bose-condensed gas 显示文摘 | Victo S Filho Gammal A Frederico T | 2000 | Phys Rev A2000，62，03： | 1 |
| 16 | Management of traumatic tibial defects using free vascularized fibula or ilizarov bone transport:a comparative study显示文摘 | Gammal TA Shiha AE Deen MA | 2008 | Microsurgery2008，28，5： | 1 |
| 17 | Inversion casting of steel strip显示文摘 | PLESCHIUTSCHIGG F P HAGEN I V GAMMAL T E | 1995 | Steel Times1995，223，6： | 1 |
| 18 | Inversion casting of steel strip显示文摘 | Pleschiutschnigg F P Hagen I V Gammal T E | 1995 | Steel Times1995，223，6： | 1 |
| 19 | Bilateral non-Hodgkin's intrinsic lymphoma of ureters显示文摘 | Bhattachary V Gammall M M | 1995 | Br J Urol1995，75，5： | 1 |
| 20 | MR myelography: imaging findings显示文摘 | Gammal TE Brooks BS Freedy RM | 1995 | AJR1995，164，1： | 1 |
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