It is found that the shallow donor levels produced by high dose neutron irradiation are caused by Si-O-C complex compound associated with oxygen carbon and micro-precipitation of oxygen.

发现由于大剂量中子辐照而产生的浅施主是与氧、碳及氧的微沉淀有关的硅-氧-碳络合物。

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With small economies and high debt levels, they often depend on donors to finance post-disaster needs, but donor resources often arrive late or not at all.

由于经济规模很小，债务负担沉重，它们往往依赖捐助机构来满足灾后需求，而捐助机构往往姗姗来迟或根本不来。

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Methods Analysis of the relationship between three-dimensional structure differences of donor-patient unmatched HLA and the GVHD levels after hematopoietic stem cell transplantation.

方法从诱导免疫排斥的HLA出发，分析供受体hla三维结构差异大小与移植后排斥反应程度的关系。

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By email, the American graphic designers chose an anonymous Indian egg donor from profiles provided by the clinic that included the women's education levels and current family status.

WSJ: Hiring A Surrogate In India

Livingston says the low levels of African productivity are linked to a lack of investment in agriculture by African governments and donor organizations over the last two decades.

CNN: Agriculture must play 'critical role' in Africa's future