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Phase 1 started with field pea followed by spring wheat whereas phase 2 started with spring wheat followed by field pea.The objectives of this thesis are:1 to quantitatively analyze effects of soil chemical,physical and biological properties on soil quality and productivity under different tillage systems and the driving factors for the changes of soil quality under tillage in a long-term,2 to select the best soil quality assessment indicators,and 3 to establish soil quality assessment models that are suitable for the erodible environment of semi-arid region on the Loess Plateau.

通过分析3个轮作周期不同耕作方式下土壤理化性质、生物性质和生产力对土壤质量的影响,阐明长期耕作过程中土壤质量的演变特征及其驱动因子,筛选出适宜于黄土高原半干旱区侵蚀环境下土壤质量评价的代表性指标;并综合前人的研究,结合区域特点,建立适宜于黄土高原半干旱区侵蚀环境的土壤质量评价模型。

Considering of the ecological factors as land-use type, hypsography, vegetation, water system, soil and so on for the sensitivity and suitability assessment of the wetland park. The result show that central area of Sanchahe, Huangmagou, Fishing Lake and the part of Beifeihe River, whose sensitivity and suitability are great than 4 should be protected.

以土地利用类型、地形、植被、水系、土壤等生态因子作为三汊河地区的生态敏感性和生态适宜性评价的指标,研究结果表明:三汊河、黄马沟、钓鱼台湖的中心区域,还有北淝河的部分地区,生态敏感性和生态适宜性的值均大于4,应当加以保护。

Tt was tennis technical testing were shoe- n that the ball hitters were feasible in the testing because of its continuity, durability, stableness and objectivity. The ball hitters should be used according to different students of different levels.

证明应用多球发球机进行乒乓球基本技术考核是可行的,它具有连续性强、长时间持续高强度工作、能保持送球质量的统一和稳定性,减小送球的随意性和主观性同时提出其应用于技术考核的不足之处,探讨发球机用于技术考核的适宜对象和适宜内容。

The result showed that the optimal condition of inorgano-absorbent manufacture as following: concentration of vitriol is 15%, the bentonite carrier must be soaked in the 0.4% La(superscript 3+) solution, the pH is 10, microwave radiation power is 340 W for 5 min. The optimal condition of organo-absorbent manufacture process as following: concentration of CTMA is 5%. The rate of wave must 166 W and the time of radiation is 6 mi In addition, the experimental results showed that with inorgano-absorbent the pH number is 3~6 and the reaction time is 45 min, the removal efficiency of phosphor will be up to 99% and the amount of adsorption will be up to 41 mg/g. And with organo-absorbent the pH number is 3~4 and the reaction time is 45 min, the removal efficiency of phosphor is more 30% than that of inorgano-absorbent. The removal efficiency of phosphor will be up to 99% and the number of adsorption will be up to 60 mg/g.

实验表明:①制备无机稀土吸附剂的适宜条件为:硫酸浓度15%,镧浓度0.4%,浸渍pH值10,微波功率340 W,辐射时间为5 min;②制备有机稀土吸附剂的适宜条件为:表面活性剂浸泡浓度为5%,微波功率为166 W,微波辐射时间为6 min;③无机稀土吸附剂当溶液的pH值为3~6,振荡时间为45 min时,对磷去除率为99%以上,吸附量达到了41 mg/g以上,有机稀土吸附剂当溶液的pH为3~4,振荡时间为45 min时,其效果比原来镧改性的无机吸附剂吸附量提高了30%,磷去除率为99%以上,吸附量达到了60 mg/g以上。

Result The results showed that the substrate carbon conversion efficiency of Amygdalus mongolica Maxim. and Amygdalus pedunculata Pall. was all a constant, was 0.55, 0.57 respectively. The adapted growth temperature scope of Amygdalus mongolica Maxim. and Amygdalus pedunculata Pall. was 14-24, 13-33 ℃ respectively. The optimal growth temperature of Amygdalus mongolica Maxim. and Amygdalus pedunculata Pall.

结果]结果表明,在所测定的范围内,随温度变化蒙古扁桃和柄扁桃的底物碳转化效率为常数,分别为0.55、0.57;适宜蒙古扁桃生长的温度范围为14~34℃,最适生长温度为25℃,适宜柄扁桃生长的温度范围为13~33℃,最适生长温度为24℃。

The results reveal that under the conditions of the third-class sites in the Southern Fujian mountain areas,the suitable planting density is 1250~1798 trees/hm 2 for building eucalyptus short-cycle industrial raw material forests; and adopting the present density to conduct afforestation may culture the best-selling dimension lumber with higher growth and may obtain better economic benefits.

通过对 7年生巨尾桉不同造林密度生长量、生物量分析,结合目标培育径阶所确定的理论适宜株数的研究,结果表明,在闽南山地Ⅲ级立地条件下,营造桉树短周期工业原料林适宜造林密度为 1 2 5 0~ 1 798株·hm-2 ,采用该密度造林不但可以培育市场畅销的规格材且生长量较高,可取得较好的经济效益

At last the breeding selection, density determination and spatial pattern are discussed and also rational density zones of some shrub and arbor breedings are suggested on base of water relationship theory and spatial characteristics of soil water utilization.

最后,结合灌木树种的水分关系和灌木对土壤水分利用的空间特征,简单地叙述了防沙治沙等生态建设工程应用水分原理选种的原则、适宜密度、确定和配置方式,并给出部分灌木树种的适宜密度区间。

Milk of calcium, phosphorus, sodium, iron, potassium, chloride salts, such as the total content of human milk is higher than 3 or 4 times, on renal function have yet to develop mature newborn infants, especially extremely inappropriate, so fresh milk must deploy its composition close to human milk loss would only be appropriate to feed the baby (the deployment of fresh milk will be mentioned later).

牛奶中的钙、磷、钠、铁、钾、氯等无机盐的总含量高于人乳3~4倍,对肾功能尚未发育成熟的小宝宝特别是新生儿极不适宜,所以鲜牛奶必须调配,使其成分亏人乳接近,才适宜喂养小宝宝(鲜牛奶的调配将在后面讲到)。

Compound lead salt stabilizer to further enhance the thermal stability in order to reduce the amount of resin in the unit: Organic tin heat stabilizer dibutyltin in greater toxicity, are not suitable for plastic heat stabilizer; Mercaptans by organotin anti - Cu-poor, it is not appropriate in the wire, cable products, but no contact for copper products is no problem; lead salt-type heat stabilizer in most industrial countries are being banned or restricted.

复合铅盐稳定剂应进一步提升热稳定性能,以减少在树脂中的单位用量:有机锡热稳定剂中的二丁基锡毒性较大,不适宜用作塑料热稳定剂;硫醇类有机锡因抗铜性差,不适宜在电线、电缆制品中使用,但用于不接触铜的制品是没有问题的;铅盐类热稳定剂在大多数工业发达国家正在被禁用或限用。

The system implemented forest fire model selection automatically and intelligently. BP artificial neural network model of forest fire model selection was build by treating forest fire environment data as inputting variable and treating appropriate forest fire model as outputting variable. At the same time, we studied the methods of acquiring and calculating data of inputting and outputting. The system implemented machine of model selection automatically based on dynamic data driven technology. We selected 72 items experimental data from historical forest fire records in Beijing to experiment and confirm the validity of model selection. It turned out that the reliability of model selection is more than 80 percent.

3基于BP人工神经网络方法设计了林火模型适宜性选择技术框架结构,通过神经网络形成林火模型选择知识,实现了林火模型的自动化和智能化选择;以火场环境因子为输入变量,以适宜火场环境模拟的林火蔓延模型作为输出变量,构建了林火模型选择神经网络模型;研究了输入、输出因子数据的获取与计算方式,实现了动态数据驱动的林火模型自动选择机制;以本京市为例,选择了有详细火场情况记录的72场林火作为实验样本,其中60条记录作为学习样本集,12条记录作为验证样本,对神经网络进行了学习和验证,实验结果表明,模型选择精度可达到80%以上。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。