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您的检索式：作者名="S.A.Ansari"
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| 1 | Quantification by allometric equations of carbon sequestered by Tectona grandis in different agroforestry systems显示文摘Non destructive methods for quantification of carbon sequestration in tropical trees are inadequately developed.We described a standardized method for estimating carbon stock in teak(Tectona grandis Linn.F.).We developed linear allometric equations using girth at breast height(GBH), height and age to quantify above ground biomass(AGB).We used AGB to estimate carbon stock for teak trees of different age groups(1.5,3.5, 7.5, 13.5, 18.5 and 23.5 years).The regression equation with GBH, y= 3.174x – 21.27, r2=0.898(p <0.01), was found precise and convenient due to the difficulty in determination of height and age in dense natural forests of teak.The equation was evaluated in teak agroforestry systems that included Triticum aestivum(wheat), Cicer arietinum(gram), Withania somnifera(ashwagandha), Avena fatua(wild oat) and Hordeum vulgare(barley) as agricultural crops established at Tropical Forest Research Institute, Jabalpur, M.P.(India).The annual carbon stock gain in teak in different agroforestry systems was in the order: teak-barley(60.47%) >teak-wheat(56.92%) > teak-wild oat(54.94%) > teak-gram(37.15%) >teak-ashwagandha(11.86%).The results from GBH-based regression equations provided satisfactory estimates of carbon stock in tropical trees. | Avinash Jain S.A.Ansari | 2013 | Journal of Forestry Research2013，24，4： | 2 |
| 2 | 颅内血管壁MRI:原理和美国神经放射学学会专家共识显示文摘颅内血管壁磁共振成像是对常规血管造影方法(CT血管造影、磁共振血管造影或数字减影血管造影)的一种补充.该技术在缺血性卒中和颅内出血情况下有诸多潜在用途.尽管对颅内血管壁磁共振成像结果的理解还存在歧异,相关研究也还正在进行之中,但该技术已在许多中心应用于临床.本文代表美国神经放射学学会血管壁成像研究组为当前临床实践提供了专家共识推荐意见. | D.M.Mandell M.Mossa—Basha Y.Qiao C.P.Hess F.Hui C.Matouk M.H.Johnson M.J.A.P.Daemen A Vossough M.Edjlali D.Saloner S.A.Ansari B.A.Wasserman D.J.Mikulis代表美国神经放射学学会血管壁成像研究组 曹旭(译) 田秀秀(译) 闫福岭(译) | 2018 | 国际脑血管病杂志2018，26，9： | 2 |
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