评价低

In the forth chapter, the mechanism of pyrimidine benzylamine compounds is studied by the conventional bioassay and biochemical methods based on probe compound 104-4. The results presented here indicated that the addition of 5 mg/L of 3 branched-amino acids to sorghum seedling cultures incubated in the presence of 104-4 completely alleviated herbicide-induced stem growth inhibition, but each of Val, Ile and Leu single is only partly effective in reversing 104-4-induced growth inhibition at the same concentrations.

通过先导结构优化策略的实施，筛选出15个高除草活性的4，6-二甲氧基-2-取代嘧啶苄胺类候选化合物，在此基础上，对一些候选化合物进行作物安全性评价试验，实验结果提示化合物103-1和化合物105-3在低剂量下对某些作物有良好的选择性，可作为优选化合物进入田间小区试验。

Methods Density gradient centrifugalization combined with adherence method were used to segregate and cultivate rat MSCs. MSCs cultivated to the 3 rd passage were characterized using flow cytometry technique. TGF-β1 with 1, 2 and 5 μg/L were pretreated on MSCs for 8 h, then serum and oxygen deprivation were used to cause analogous ischemia of MSCs in vitro. AnnexinV/PI flow cytometry technique was used to evaluate apoptosis and survival of MSCs.

采用密度梯度离心结合贴壁法分离、培养大鼠MSCs，对培养第3代的MSCs进行鉴定；用1、2、5μg/L的TGF-β1分别预处理细胞8 h，然后用血清剥夺和低氧处理建立MSCs体外模拟缺血性损伤模型，通过流式细胞术评价MSCs的凋亡及存活情况；用Western blot方法检测2μg/L的TGF-β1对Akt和p-Akt表达的影响。

Problems stand out in that there is low learning efficiency in study of students at large and the pattern of the course design, teaching approach, and education evaluation method are comparatively demoded With the coming of the information age, historic changes in both life style and learning style are highlighted.

近几年来，对人类学习活动的研究虽然已经发展成为当今世界多学科交叉的前沿课题，但多数研究成果尚未引入教育理论与实践中来，教育行政部门、学校和教师几乎没有考虑如何通过培养来提高学生的学习能力，致使目前学习方式与课程、教学、教育评价模式都比较落后，学生学习效率普遍比较低，无法适应时代的要求，这种状况在我国表现得很突出。

In RESEE, a fuzzy gradient classification based next hop strategy was designed to balance the energy consumption as a whole. Reject and recommend strategy of low residual energy node, and reactivate strategy of high residual energy node were applied to equilibrize the energy consumption locally.

协议对节点间的梯度进行模糊分级，并将模糊等级选择策略与质量评价函数相结合选择下一跳节点，以实现全局的能量均衡；协议采用低能量节点的拒绝与推荐策略、高能量节点的激活策略，以实现局部的能量均衡。

It is shown that the strengths for frozen pastes are increased in relation to unfrozen ones. The increment of the strengths is raised with increasing the content of freezable water and decreasing freezing temperature.

为了评价破坏应力的大小，研究了不同水灰比的硬化水泥浆体在不同冻结温度下抗压强度和抗折强度的变化，发现冻结状态下浆体的强度有所增加，并且可冻水量越多，冻结温度越低，强度增长越显著。

Methods A total of 60 patients underwent colon hypotonic DCBE with examination and all were follwed up.

目的 通过60例结肠低张气钡双重造影检查，回顾性分析评价该检查方法的临床应用价值。

Objective:To evaluate the effects ofMannitol on traumatic hypotony.

目的：评价甘露醇治疗外伤性低眼压的疗效。

Found that interparental conict was a stronger predictor of a composite of signs of child insecurity (e.g., distress, avoidance, involvement, and negative appraisals) when children also experienced high family instability and low levels of emotional expressiveness and relationship satisfaction in the interparental relationship.

发现，interparental冲突是一个不安全的儿童复合强预测的迹象（例如，痛苦，逃避，参与和负面评价）孩子也经历了家庭的不稳定和高情感的表现和关系的满意度较低水平interparental关系。

A new integrated method was invented and found useful for trap appra isal at an early stage when the exploration was of low degree, short period, and full of great difficulties and risks, as that in the Kashan Exploration Block, Iran.

摘 要：针对伊朗卡山探区勘探程度低、周期短、难度大、风险高的特点，通过地球物理资料，特别是地震资料的处理和解释，结合探区外围的地质调查和油气田资料，进行了油气藏圈闭可靠性、储集封堵条件、有效性及含油气性等方面的地球物理资料预测，探索出了一套早期勘探区域圈闭评价的新方法。

And the theory of Technological leapfrogging is for it after being studied.

本文首先整理了技术跨越的相关理论，并对原有理论进行了评价、分析和拓展，在此基础上阐述了技术跨越和技术创新的关系、技术跨越的诱导机制以及政府作用；并以产品市场和要素市场为切入点建立技术跨越机制模型用以分析技术跨越的理论过程，在理论模型构建的基础上结合我国制造业的现状首先解释了制造业目前整体技术水平低的原因，更重要的是应用技术跨越机制模型分析和阐述了制造业摆脱目前困境的战略选择。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失