Biblioteca Digital

141 resultados para 15-147C

Natural nitrogen-15 abundance of ammonium nitrogen and fixed ammonium in soils

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Nitrogen-15 balance and residual effectsof urea-N in wetland rice field as...

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微计算机在15质谱分析中的应用

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Variations in natural nitrogen-15 abundance of soil nitrogen

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应用~(15)N示踪技术研究水稻对氮肥的吸收和分配

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~(15)N同位素稀释法测定土壤氮素总转化速率研究进展

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Temporal and spatial variations of delta N-15 and delta O-18 for atmospheric N2O above the oceanic surface from Shanghai to Antarctica

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Temporal and spatial variations of delta N-15 and delta O-18 for atmospheric N2O above the oceanic surface from Shanghai to Antarctica

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Diffusion technique for N-15 and inorganic N analysis of low-N aqueous solutions and Kjeldahl digests

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不同区域水稻土的氮素分配及δ~(15)N特征

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TiO2/SBA-15介孔复合材料的制备及其光催化性能的研究

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有机疏水改性SBA-15负载钴基催化剂的制备、表征及其在F-T合成中应用的研究

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高效甲醇水蒸气重整制氢的SBA-15改性的Cu/ZnO/Al2O3催化剂

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Synthesis of nano titania particles embedded in mesoporous SBA-15: Characterization and photocatalytic activity

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One-pot synthesis of mesostructured AlSBA-15-SO3H effective catalysts for the esterification of salicylic acid with dimethyl carbonate

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