Based on the thermal network of the two-dimensional heterojunction bipolar transistors (HBTs) array,the thermal resistance matrix is presented,including the sel
We propose a new fractional two-dimensional triangle function combination discrete chaotic map (2D-TFCDM) with the discrete fractional difference.Moreover,the c
苹果是我国栽培面积最大的果树树种之一，西北黄土高原是我国苹果的最佳产区。但是目前该地区在多重因素的影响下土壤碱化不断加重，土壤pH值多在8.0以上，这成为影响果园肥料利用
本论文是在前人研究的基础上进行油茶总皂苷的分离与纯化工艺的研究。论文分四部分进行,如下:第一部分:采用于柱层析制备油茶皂苷对照品。将样品干法上样并用乙酸乙酯-甲醇-
基因靶向治疗(gene targeting therapy)可以特异性的杀伤肿瘤细胞,而不伤害正常细胞和组织.为了将这些转基因靶向投递到肿瘤细胞中,需要一个合适的载体.几种不同的菌种,如梭菌,沙门氏菌已经应用于临床试验,然而这些外来致病菌的毒性要超过他们本身的治疗意义.双歧杆菌(Bifidobacterium)是人类肠道中固有菌群,没有致病性,可以在肿瘤组织中特异性富集,这为肿瘤的治疗提供了基础.将自杀基因和免疫调节因子等导入双歧杆菌中,这些双歧杆菌在肿瘤中特异性的增殖,从而达到治疗肿瘤的目的.
The well-known multi-dimensional reconciliation is an effective method used in the continuous-variable quantum key distribution in the long-distance and the low
桃的花粉育性是影响果实丰产、稳产的一个重要指标。生产实践中普遍反映花粉不育类型的口味和品质更好一些。针对此现象，本试验以河北省主产的桃品种-大久保桃的3612株自交群
Both long-term environmental durability and high reflectance of protected-Al mirrors are of great importance for developing the optical instruments in the vacuu
A topology optimization method based on the solid isotropic material with penalization interpolation scheme is utilized for designing gradient coils for use in
To study the impact of plasma generated by microwave breakdown on the propagation properties of microwave in high power microwave (HPM) devices,a three-dimensio