Characteristics of cadmium （Cd） uptake kinetics and distribution of Cd speciation in the rhizosphere for Cd accumulator and nonaccumulator oilseed rape varieties were investigated under nutrient solution and rhizobo...Characteristics of cadmium （Cd） uptake kinetics and distribution of Cd speciation in the rhizosphere for Cd accumulator and nonaccumulator oilseed rape varieties were investigated under nutrient solution and rhizobox soil culture conditions. The results showed that the maximal influx （Vmax） for Cd^2＋ and Km were significantly different for the two oilseed rape varieties. The value of Vmax for Cd accumulator oilseed rape Zhucang Huazi was two-fold greater than that for oilseed rape Chuan you Ⅱ-93. The exchangeable Cd concentration in the rhizosphere was significantly lower than in non-rhizospheric soils supplemented with CdSO4 for both the varieties. Carbonate-bound Cd in the rhizosphere of Cd accumulator oilseed rape was significantly higher than that in the rhizosphere of nonaccumulator oilseed rape and non-rhizospheric soil. Cd accumulator oilseed rape had a higher Cd^2＋ affinity and more ability to uptake insoluble Cd in the soil than the non-accumulator oilseed rape.展开更多
The protrusion of the planning of numerical intelligent early-warning and tracking system in this study which can ease triggerman's work strength,lay the next generation intelligence supervision system foundation ...The protrusion of the planning of numerical intelligent early-warning and tracking system in this study which can ease triggerman's work strength,lay the next generation intelligence supervision system foundation and expand effectively the video resources use etc. In the numerical intelligent early-warning matrix sub-system,the authors have designed a kind dual-core system which includes both ARM and DSP,and designed detailedly traffic dynamics affairs early-warning arithmetic which bases on that system. And then,this system will carry quickly on fixing the right position of license plate,correcting the inclination degree of license plate,and thinning it to get the number of this license and severity grade. Secondly,in the rotated dome camera sub-system,the authors have designed three-dimensional trajectory mathematical model which makes use of a fuzzy PID controller to achieve the high- speed track. At last,Simulation shows that the proposed control method has high profile tracking precision,accuracy and robustness of the disturbance.展开更多
We fall into disuse the JUHU system based on the PDP/11 computer for RSX11M operation system,and update our multi-parameter data aequisition and analysis system’s hardware and software based on VAXII computer and Ope...We fall into disuse the JUHU system based on the PDP/11 computer for RSX11M operation system,and update our multi-parameter data aequisition and analysis system’s hardware and software based on VAXII computer and Open VMS operation system,make it adapted to the recent physics experiment.In this paper,we describe the updated inulti-parameter data acquisition and analysis system’s hardware,software configuration and system function.展开更多
多图谱图像分割方法在处理医学器官分割中体现了更高的分割效率,但目前已有的多图谱分割方法主要存在两个问题:一是分割多个感兴趣区域(regions of interest,ROI)时,会出现错误分割和错误间隙等问题;二是在分割多目标ROI时,会大大增加...多图谱图像分割方法在处理医学器官分割中体现了更高的分割效率,但目前已有的多图谱分割方法主要存在两个问题:一是分割多个感兴趣区域(regions of interest,ROI)时,会出现错误分割和错误间隙等问题;二是在分割多目标ROI时,会大大增加分割时间。针对上述问题,改进图像融合算法,提出加权联合表决算法(weighted combine voting,WCV)。算法将所有的待分割目标作为参与共同表决的对象,将图谱图像与目标图像之间的相似系数(dice)作为“投票”权重,通过一次“投票”过程就可以分割出所有的待分割目标。方法在实验数据集上得到的整体分割结构相似性、单个器官ROI相似性系数分别为:整体97.11%,肺部78.57%,血池76.03%,心肌80.10%,相比现有多图谱分割方法取得了更高的准确性。实验结果表明该方法可以使器官分割具有较高的鲁棒性,对临床应用具有现实意义。展开更多
基金supported by the National Key Tech-nology R&D Program of China (No. 2006BAD17B04)the Hi-Tech Research and Development Program (863)of China (No. 2007AA061001)the National Basic Research Program (973) of China (No. 2002CB410804)
文摘Characteristics of cadmium （Cd） uptake kinetics and distribution of Cd speciation in the rhizosphere for Cd accumulator and nonaccumulator oilseed rape varieties were investigated under nutrient solution and rhizobox soil culture conditions. The results showed that the maximal influx （Vmax） for Cd^2＋ and Km were significantly different for the two oilseed rape varieties. The value of Vmax for Cd accumulator oilseed rape Zhucang Huazi was two-fold greater than that for oilseed rape Chuan you Ⅱ-93. The exchangeable Cd concentration in the rhizosphere was significantly lower than in non-rhizospheric soils supplemented with CdSO4 for both the varieties. Carbonate-bound Cd in the rhizosphere of Cd accumulator oilseed rape was significantly higher than that in the rhizosphere of nonaccumulator oilseed rape and non-rhizospheric soil. Cd accumulator oilseed rape had a higher Cd^2＋ affinity and more ability to uptake insoluble Cd in the soil than the non-accumulator oilseed rape.
基金Supported by the National Basic Research Program of China(No.2011CB707000)Science and Technology Development Program of Shandong Province(No.J13LC51,2011XH17006)Independent Innovation Program of Ji’nan Colleges and Universities(No.201401213)
文摘The protrusion of the planning of numerical intelligent early-warning and tracking system in this study which can ease triggerman's work strength,lay the next generation intelligence supervision system foundation and expand effectively the video resources use etc. In the numerical intelligent early-warning matrix sub-system,the authors have designed a kind dual-core system which includes both ARM and DSP,and designed detailedly traffic dynamics affairs early-warning arithmetic which bases on that system. And then,this system will carry quickly on fixing the right position of license plate,correcting the inclination degree of license plate,and thinning it to get the number of this license and severity grade. Secondly,in the rotated dome camera sub-system,the authors have designed three-dimensional trajectory mathematical model which makes use of a fuzzy PID controller to achieve the high- speed track. At last,Simulation shows that the proposed control method has high profile tracking precision,accuracy and robustness of the disturbance.
文摘We fall into disuse the JUHU system based on the PDP/11 computer for RSX11M operation system,and update our multi-parameter data aequisition and analysis system’s hardware and software based on VAXII computer and Open VMS operation system,make it adapted to the recent physics experiment.In this paper,we describe the updated inulti-parameter data acquisition and analysis system’s hardware,software configuration and system function.
文摘多图谱图像分割方法在处理医学器官分割中体现了更高的分割效率,但目前已有的多图谱分割方法主要存在两个问题:一是分割多个感兴趣区域(regions of interest,ROI)时,会出现错误分割和错误间隙等问题;二是在分割多目标ROI时,会大大增加分割时间。针对上述问题,改进图像融合算法,提出加权联合表决算法(weighted combine voting,WCV)。算法将所有的待分割目标作为参与共同表决的对象,将图谱图像与目标图像之间的相似系数(dice)作为“投票”权重,通过一次“投票”过程就可以分割出所有的待分割目标。方法在实验数据集上得到的整体分割结构相似性、单个器官ROI相似性系数分别为:整体97.11%,肺部78.57%,血池76.03%,心肌80.10%,相比现有多图谱分割方法取得了更高的准确性。实验结果表明该方法可以使器官分割具有较高的鲁棒性,对临床应用具有现实意义。
