有效因子

The ratio of irrigated area to cultivated area,the number of electromechanical wells per each effective irrigational unit,the coefficient o...

结果表明：灌耕比、单位灌溉面积机电井数、土壤有效保水系数、农机动力系数等4个因子可以作为全省农业综合抗旱能力评价的指标；全省农业综合抗旱能力可以划分为高、中、低值区，其中，高值区主要分布在豫中、豫北的大部分地区；中值区比较分散，主要包括中西部低丘、缓岗区，平顶山东部、驻马店及信阳西南部，开封东部-商丘地区，林州-辉县县区；低值区又可分为2个小区，主要包括三门峡、洛阳中西部及南阳地区，信阳中部及东部。

Objective:To investigate the effect of vascular endothelial growth factor gene therapy on myocardial ischemia.

目的：探讨血管内皮生长因子基因治疗心肌缺血是否有效。

According to the results,100℃ isothermal annealing is the most effective,and the time of isochronal annealing is the shortest.The acceleration factor could be determined via the comparison of 25℃ with 100℃ isothermal annealing.

研究表明：10 0℃等温退火是最有效的，等时退火所需的全过程时间最短，通过 2 5℃与 10 0℃等温退火结果的比较，可以确定此种器件的加速因子。

According to the method, an initial classification was firstly performed by use of the conventional transitive closure method, and then an initial division matrix was constructed. With the weighted fuzzy ISODATA method for iterative computation of the related data, the data were classified effectively.

该方法首先利用传统的传递闭包方法得到1个初始分类，并在此基础上提出初始分划矩阵，根据考虑权重因子的模糊ISODATA方法对相关数据进行迭代计算，从而对数据进行有效分类。

By using low-frequency dynamic frequency density wave, the OA kneepad could regulate many aspects of pathological process of knee OA including: inhibition of biological effects of cytokine, MMP-3, HA, oxygen free radicals and NO; enhancing the biological activity of SOD; up-regulating the mRNA expression of Bcl-2 as well as down-regulating the mRNA expression of P53, thereby to inhibit the apoptosis of cartilage cells and delay the cartilage degeneration of the macro-morphology, cartilage cells and cartilage matrix.

OA护膝采用低频温热动态变频疏密波，针对膝OA病理过程中的多个环节进行调节，能有效抑制细胞因子、MMP－3、HA、氧自由基、NO的生物学效应，增强SOD的生物学活性，提高关节软骨细胞Bcl-2mRNA表达，减弱软骨细胞P53mRNA表达，从而抑制软骨细胞凋亡，延缓膝关节软骨宏观形态、软骨细胞及软骨基质的退变。

A kind of water saturation explanatory model of argillaceous sandstone is presented, including the formation water alteration during the lithification, and the argillaceous sandstone conductive volume as micro pore conductive volume occupied by the bound water and conductive volume in the effective pore.

认为泥质砂岩的导电体积由两部分组成，即完全被束缚水占据的微孔隙(孔喉半径小于 0 。1μm ，其中的流体不能渗流)导电体积和有效孔隙中被可动水、束缚水占据部分的导电体积，泥质砂岩的整个导电响应为二者之和，但二者导电体的导电特性不同，各有其不同的几何因子。

The non-reference-signal's adaptive digital filter algorithm of multi-sensor data fusion in the course of adaptive filter can be done without reference signals. It can adjust convergence constant automatically, it can also be recurred with real gradient value. Thus the field to apply the adaptive filter is widened, the convergence speed of the adaptive filter is sped up, the weighted disadjustmend is decreased, so that the last error of mean square approaches its minimum value more.

这章研究的基于多传感器数据融合无参考信号的自适应数字滤波算法其在自适应滤波过程中具有不用参考信号与自动调整收敛因子及使用实际梯度值进行递推的特点，这样不仅可扩大自适应滤波的使用范围，而且还使自适应滤波的收敛速度加快有效地减小权失调，从而使最后的均方误差更接近于其最小值。

Based on Tsong's mean value method, we propose a procedure to test the hypothesis for pooling factors.

另外，当考虑不同因子可否合并估计一个共同有效期间时，Tsong等人提出利用平均值法进行检定，我们根据Tsong的方法提出配对信赖区间进行检定。

Results Level of cytokine of blood serum in the children with mumps meningoencephalitis had differently rise, then i...

腮脑发病与细胞因子存在相关性。静脉丙球是有效的治疗措施之一。

During 6:00-10:00 o'clock period, climbing of photosynthetic rate P(subscript n was primarily caused by photosynthetic active radiation, leaf temperature, relative humid. Descending photosynthetic rate P(subscript n from 10:00 o'clock to 14:00 o'clock, especially "middy depression" was mostly caused by stomata factor.

早晨6：00-10：00期间，光合速率的上升主要是光合有效辐射、温度和相对湿度造成的。10：00-14：00期间，光合速率的降低，尤其是"午休"期间的下降，气孔因素是主要限制因子。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。