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Crosssing apomictic rice and C4 crop,such as Sorgum,Trapsicum and Panicum maximumespecially by somatic hybridization and gene engineering technique to create new varieties with characteristics of apomixis and high photosynthetic efficiency.

利用无融合生殖水稻与无融合生殖高光效的C4作物，如高粱、摩擦禾、木黍等杂交，特别是体细胞杂交和基因工程技术，创造具有无融合生殖特性高光效作物新品种。

The results showed that,on first day induced by mIL-2+B16,mIL-2+B16PELs had no cytotoxicity to B16 target cells,no expression ofperforin and granzymeA genes,no granules in PELs cytoplasm.

结果显示：1.mIL-2〓细胞诱导一天时，取得的PEL用Rt-PCR检测，无粒酶A与穿孔素基因表达、无细胞毒活性、其胞浆中也无杀伤颗粒存在。

Influence of various parameters including ratio of nonprestressed reinforcement, ratio of unbonded prestressing tendon, span-depth ratio, effective prestress, cylindrically compressive strength of concrete, ultimate tensive strength of prestressing tendon, yield strength of nonprestressed reinforcement and loading pattern on the behavior of unbonded prestressed concrete beams and the ultimate stress in tendon, f_, are investigated in detail. Parameters having important influence on second-order effects of externally prest

本文设计了8个系列共76根体内无粘结预应力梁，以及2个系列共21根体外预应力梁和3根体内无粘结预应力对比梁，利用提出的有限元模型对这些梁进行非线性全过程分析，详细研究了各种参数诸如非预应力筋配筋率、无粘结预应

Theequivalence percolation resistance law is accurate enough to be used in productivitycalculation of horizontal well pattern.(3) Productivity of mixed well pattern of horizontalwell or multilateral horizontal well and vertical well is constructed and formulae are simpleenough to be used in the oilfield. The patterns include 5-spot pattern,7-spot pattern and9-spot pattern.(4) Productivity formula of united rectangular well pattern of horizontaland vertical wells is constructed. By this formula, the calculation results show that fora horizontal well length, there is a shape factor at which the productivity of the patternis biggest. So optimum method of the well pattern is proposed.(5) A new concept ofdimensionless length of horizontal well is advanced and the relationship of optimum shapefactor of the rectangular well pattern against dimensionless length of horizontal well ispresented. The influences of length of the horizontal well, area of the well pattern unitand the thickness of reservior are concerned.

利用该公式计算表明：当水平井长度一定时，存在一个最优井网形状，使得水平井的产能最大，在此基础上提出了水平井井网的优化方法；(5)提出了水平井无因次长度的概念，给出了联合井网最优井网形状因子与水平井无因次长度的关系式，并对水平井长度、油层厚度及井网面积对产能的影响进行了分析；(6)推导出了一无限水平井井排在XY 平面内势的解析解，为不同水平井整体开发井网或水平井和直井井网整体开发渗流理论的研究奠定了理论基础；(7)建立了交错式水平井与直井整体开发渗流理论，给出了拟三维条件下井网产能的精确解析解及该井网最优井网形状因子与水平井无因次长度的关系，并对产能的影响因素进行了分析；(8)建立了水平井与水平井正排列井网、交错排列井网条件下渗流理论及井网产能在拟三维条件下的精确解析解，给出了交错井网条件下最优井网形状因子与水平井无因次长度的关系，通过与正方形井网对比，说明优化井网可大幅度提高开采效果；(9)建立了分支水平井和直井面积井网水油两相非活塞驱替条件下渗流问题的解析解，给出了见水前后无因次产量与无因次时间的关系式以及见水时间等。

A novel hybrid active power filterwith series resonance circuit turned at fundamental frequency is proposed,which is composed of high-capacity passive power filtersfor harmonic currents suppression as well as reactive power compensation and an active power filterfor improving filtering performance as well as overcoming resonance problem due to PPFs.

提出一种基波串联谐振式混合型有源滤波器，利用大容量无源滤波器实现谐波抑制和无功补偿；采用有源滤波器改善系统滤波效果并阻尼无源滤波器与系统阻抗之间的串、并联谐振。

Designed to be user-friendly, the 7.1 ounce, no-drain pouches contain skinless, boneless salmon pieces.

它是一种7.1盎司无排水的袋装无皮无骨鲑鱼块。

Results:The positive rate of HPV-DNA was 41.7%(20/48) and there were no significant difference on HPV infection in different groups of age,smegma and history of balanoposthitis.

结果：48例中，20例阳性，阳性率为41.7%；其中不同年龄段、有无包皮垢及有无感染史组间HPV阳性率均无显著性差异。结论：对需行包皮环切的男孩，应尽早施行包皮环切术。

The development of a gametophyte directly from a sporophyte without the occurrence of meiosis or spore formation.

无孢子形成，无孢子生殖，无孢子状态没有经过减数分裂或孢子形成而直接由孢子体进行的配子体发育

The modified particle swarm optimization is utilized to solve the proposed reactive power optimization model; and combining with non–stationary multi-stage assignment penalty function, the reactive power optimization problem is transferred into a problem to solve extreme-value without constraints, thus the calculation accuracy and global convergence ability of MPSO are effectively improved, and power grid company can achieve maximal economic benefit by means of the proposed algorithm.

应用改进粒子群优化算法求解该无功优化模型，并结合动态调整罚函数法将无功优化问题转化成无约束求极值问题，从而有效地提高了改进粒子群优化算法的全局收敛能力和计算精度，使电网公司取得了最大经济效益。

Results: All patients had no pain or light pain only so as not to use any analgesic drugs and no influence on their sleep. They even walked freely, wearing loose shoes. Three days after operation cut wound was stuff full with newly born granulation tissues. About one week later, the cut wounds were completely covered by newly born white epithelial tissues. Continue using MEBO for another 1-2 weeks, all the wounds were healed. No obvious scars were observed and reserved nails were large and had beautiful outlook. There were no suppuration and infection at wounds and no phalanx ungula osteomyelitis occurred.

结果：病人术后无痛或轻微疼痛，无须用止痛药物，不影响睡眠，可穿宽松鞋自由走动；术后3d可见新生肉芽组织填满切口，1周左右可见新生白色的上皮组织完全覆盖切口，继续应用MEBO 1周～2周，全部愈合，愈合后无明显瘢痕，保留甲大而美观；切口无化脓感染，无末节趾骨骨髓炎发生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。