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Plane tree and glossy priver were chosen to monitor SO2 pollution in 29 sites selected from 14 locations in general air polluted areas and 15 locations in heavy industrial polluted areas in Nanjing city.

本文通过对南京市区29个采样点的采样和分析(市区14个点代表一般城市的环境状况、大厂区15个点代表重污染区的环境状况),确认法桐和女贞两种树木叶片含S量与大气中SO_2浓度密切相关。

This recording first appeared in 1972 on the sampler album The New Age of Atlantic and was later included on the compilation album Yesterdays in 1975 and on the 2003 re-issue of their album Fragile.

此版本首次出现在1972年的采样专辑The New Age of Atlantic中,后又收录到1975年发行的专辑Yesterdays以及2003的重制专辑Fragile中。

The composition of soil animal community in Shanghai World Exposition Site was the typical semi-tropical one, which indicated that the whole soil health of this old industrial and residential area were good. But, exceptional vertical distributions were observed in a few sites, where need further analysis about their pollution and physical and chemical properties.

世博会会址区域是典型亚热带土壤动物群落的组成模式,反映出该处城市重工业区和老居民区内土壤的整体状况良好;但少数采样点中,群落结构垂直分布出现异常,需要加强对这些样点相关区域的土壤污染和土壤理化等质量状况的分析。2。

The results show, under the long-trem influence of different farming behaviors, the soil, collected from dry-land in low multiple crop index to dry-land in high multiple crop index to composite-land in high multiple crop index, decease in bult density, clay content, total P and activities of catalaes and increase in organic matter, humic acid contents, nitogen, available nitrogen, phosphorus, potassium, soi breathe intensity and urease, phosphatase, protease active content.

选择贵州中部喀斯特山区普定县猫洞小流域地区,通过长期受不同生产行为影响的区域(低复种旱作区、高复种旱作区、高复种复合农作区)的土壤采样分析,结果表明:喀斯特山区小流域土壤在长期不同生产行为影响下,从低复种指数旱作区、高复种指数旱作区到高复种指数复合农作区,土壤容重、粘粒含量减小,而土壤有机质、腐殖酸含量、全氮、碱解氮、速效磷、速效钾、土壤呼吸强度、脲酶、磷酸酶、蛋白酶活性含量依次增大,土壤全钾含量和过氧化氢酶活性却依次减小。

This design primary mission is completes the static heavy accelerator the principle and the design proposal, its main design mentality is: Determines in the vessel by the sensor the fat liquor quality, carries on the cyclical sampling under the certain time-gap, transforms after the A/D switch, bequeaths the initial datum the register, the afterwards data bequeaths CPU, the register cancels with some time data namely for flows out the fat liquor the quality, again demonstrates its value by the monitor

本设计的主要任务是完成静重式加油机的原理及设计方案,其主要设计思路为:由传感器测出容器内油液质量,在一定的时间间隔下进行周期采样,经A/D转换器转换,将初始数据传给寄存器,随后的数据传给CPU,寄存器与某时刻的数据相减即为流出油液的质量,再由显示器显示其数值。

The results show that 42.86% topsoil samples are polluted by Cadmium, soil synthesis pollution index is moderate, Cadmium pollution degree of topsoil correlate with the environment of sampling sites. The results also show that exchangeable Cd, carbonate-bound Cd, organic-bound Cd and residual Cd are found in all soil samples except for Fe-Mn oxide-bound Cd. Furthermore, the concentration of exchangeable Cd and carbonate-bound Cd, both which have high biological validity, is high. Humus has a certain correlation with exchangeable Cd, organic-bound Cd and residual Cd, and has no obvious correlation with other chemical speciations. Any chemical speciation of Cd has no obvious correlation with pH and total Fe of soil samples. Cadmium in topsoil can be eluviated by acid solution, the quantity of Cadmium eluviated by redistilled water is little. With the rise of pH of eluviating solution, eluviated Cadmium quantity decrease. For the same soil sample, the lower pH value of eluviating solution is, the more fast the Cadmium is eluviated, and the more thequantity of Cadmium is eluviated.

研究结果表明:成都市表生土壤样中有42.86%受镉污染,镉综合污染水平达中度污染,成都市表生土壤镉污染程度与采样点周围环境表现出一定的相关性;除铁锰氧化物结合态镉在部分土壤样中未检出外,所有土壤样均含有可交换态镉、碳酸盐结合态镉、有机结合态镉、残留态镉,且生物有效性较高的可交换态镉和碳酸盐结合态镉占总镉量比例较高;成都市表生土壤中的腐殖质与可交换态镉、有机结合态镉、残留态镉有一定相关性,与碳酸盐结合态镉、铁锰氧化物结合态镉相关性不显著;各形态镉与土壤pH值和全铁的相关性均不显著;土壤中的镉可被酸溶液淋出,重蒸馏水淋出镉量十分微小;随着淋滤液pH值的升高,土壤样的镉淋出量下降,且0~5小时时段的镉淋出量占镉总淋出量比例下降,5~30小时时段的镉淋出量占镉总淋出量的比例上升,对同一土壤样而言,酸度大的淋滤液比酸度小的淋滤液淋出镉速度更快,淋出镉量更大。

This paper based on Precision Agriculture development of China, and focused on several key problems for developing Precision Agriculture, especially field spatial information distribution processing method. The trail farm is located in Shunyi, Beijing. The area is 11 hectors. We sampled the soil, and got soil spatial distribute data , crop growing status distribute data (such as crop population, crop height, plant dry weight), yield distribute data (such as yield per mu, ears per mu, seeds number per ear, weight of thousand grain, plant yield).

本文在探索我国精细农业发展道路的基础上,以当前开展精细农业实践急需解决的关键问题之一—农田空间分布信息处理方法研究作为切入点,通过对北京顺义&三高&农业示范区一块面积约11公顷的农田进行了定点采样试验,得到土壤空间分布信息、苗情分布信息(株数、株高、地上干物重等)、产量分布信息(亩产量、亩穗数、穗粒数、千粒重、生物产量等)。

The data source based on the second soil survey in year of 1982 and repeated soil sampling in year of 2003, and the methods for sampling, determining and analyzing of SOC are auger hole method, K_2Cr_2O_7 oxidation method, area-weigh method respectively, and micro-pipette method is used to determine soil texture....

SOC数据来源于1982年土壤普查和2003年重复采样,土样的采集、分析和统计方法分别为土钻取土法、重铬酸钾氧化法、吸管法和面积加权法。

On the basis of the investigation of different moments, the concept of generalized moments is firstly defined and then, an abstract algorithm framework for computing the accurate generalized moments is presented. The framework replaces integrals on 2-dimensions space by summations on 1-dimension ORBIR list without introducing the error incurred by discrete sampling, and therefore, reduces the computation complexity for moments generation.

矩在工程实践中的应用非常广泛,在考察矩的实质的基础上,定义了泛化矩的概念,并研究泛化矩的生成框架,该框架在不引入离散化过程中存在的采样误差的前提下,将矩生成过程中需要的二重积分运算转化为在一维的ORBIR矩形序列上的求和,因此降低了矩生成的计算复杂度。

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