Current crustal motion and deformation in the Chinese mainland and its surrounding area determined from GPS data

Based on the geodetic data taken from the National GPS Network established by China Climbing Program "Investigation of Crust Motion and Geodynamics in Modern Time",we derived the movement velocities of the GPS sites. In terms of the power series expansion of a rotation function for horizontal velocities on a spherical surface proposed by Haines and Holt (1993), we computed the horizontal velocity and strain-rate field. We preliminarily studied the appearances and characteristics of the present-day crustal movement and deformation in the Chinese mainland with the computed results. The researches demonstrated: ① The present-day crustal movement and deformation in the Chinese mainland are being jointly controlled by Indian, Pacific and Philippines Ocean Plates and Siberia-Mongolia block, and these three large plates and block form a situation of tripartite confrontation, but Indian Plate seems to play a leading role; ② The North-South Earthquake Zone plays an important adjustment role in the present-day crustal movement and deformation process, displaying clear characteristics of demarcation line of tectonics in large areas; ③ There seems to be another adjustment zone along the latitude line approximate N35°, but its characteristics are less obvious than that of the former; ④ Dynamic actions of these three large plates and block on the Chinese mainland are dynamic stable; appearing in stable push-press velocities. These results are generally accorded with the results determined from geology, geophysics, and seismology. By the contrast with seismicities, it appears preliminarily that there is some corresponding relation between intense shear strain zone and future strong seismicity area, but this problem needs further examination of earthquake examples.     

益气消瘀汤联合耳穴压豆治疗盆腔炎性疾病30例临床观察

目的：观察中药益气消瘀汤联合耳穴压豆治疗盆腔炎性疾病的临床疗效。方法：将90例盆腔炎性疾病患者随机分为A、B、C 3组各30例,A组采用益气消瘀汤联合耳穴压豆治疗,B组单用益气消瘀汤治疗,C组单用西药治疗。观察3组治疗前后症状、体征的改变,血清TNF-α、IL-2及IL-6含量变化。结果：总有效率A组为93.3%,B组为70.0%,C组为90.0%,A、C组与B组比较,差异均有统计学意义（P>0.05）,A组与C组比较,差异无统计学意义（P>0.05）。3组临床症状体征积分、血清TNF-α、IL-2及IL-6含量治疗前后组内比较,差异均有统计学意义（P＜0.05）;治疗后A、C组与B组比较,差异均有统计学意义（P＜0.05）,A组与C组比较,差异无统计学意义（P>0.05）。结论：益气消瘀汤联合耳穴压豆可以有效改善盆腔炎性疾病患者的临床症状和体征,降低患者血清TNF-α、IL-6含量,增加血清IL-2含量,可显著提高临床疗效。     

四川丹巴地区Cu-Ni-Pt族元素矿床的矿石矿物特征

四川丹巴地区基性、超基性岩型 Cu- Ni- Pt族元素矿床中 ,含有多种 Pt族元素矿物 ,主要有 :(1)碲化物及碲铋化物、碲锑化物类 ,(2 )锑化物类 ,(3)砷化物类 ,(4 )自然元素类。通过显微镜下的观察鉴定和成分电子探针分析结果 ,分别计算了矿床中主要矿石矿物的结晶化学式。结果表明 ,矿床中有 7种已知的 Pt族元素矿物和 6种可能是 Pt族元素新矿物或新变种矿物。     

新型有机-无机杂化涂层-气相色谱/质谱联用测定正构烷烃性能研究

水体中正构烷烃的含量反映了研究区域有机物污染水平.痕量正构烷烃的测定常常需要结合分离富集方法才能保证灵敏度和选择性,液液萃取等常规分离富集方法存在耗时长、有机溶剂使用量大等缺点,而新型固相微萃取(SPME)分离富集技术相比而言具有高效简便、富集效率高的特点.本文采用溶胶-凝胶法自制稳定性和耐基质性能更优的有机-无机杂化SPME涂层,结合气相色谱-质谱(GC - MS)检测技术,对水样中26种正构烷烃进行同时测定.在优化的SPME - GC/MS条件下,采用浸入式萃取方式,萃取温度为25℃,萃取时间为30 min,26种正构烷烃的分析信号与浓度之间有良好的线性关系(线性相关系数为0.9935 ～0.9999),方法检出限为0.011 ～0.085μg/L(k=3),相对标准偏差(RSD,n=5)为3.9％ ～10.0％.新型有机-无机杂化涂层与传统的分离富集技术相比,减少了有机溶剂的使用,提高了工作效率;与商用PDMS涂层相比,增加了正构烷烃同时检测的种类,提高了灵敏度,检出限低2～10倍.自制的有机-无机杂化SPME涂层体现出优异的分析性能和应用潜力.     

基于WebGIS的重庆市互联网导游系统

建立基于WebGIS技术的互联网导游系统,对旅游事业的发展及人们外出旅游具有十分重要的意义。通过对目前几大主流WebGIS平台和主要技术模式的比较,结合重庆市旅游发展实际,并从方便用户出发,构建了基于WebGIS的重庆市导游系统。在WebGIS基础平台上,采用计算机网络和数据库管理技术,对重庆市旅游资源信息进行采集、存储、管理、分析、计算和图形处理显示,以图文、声像等形式综合展示系统处理结果,并将之公布于互联网上;整个导游系统由基础数据库、应用分析和决策支持三大模块组成;同时,在基础数据库支持下,用户可以通过互联网对导游信息系统进行相关旅游信息的空间查询分析。该系统的构建将促进旅游业的信息化发展,提高重庆市的旅游管理水平。     

一种改进均值的自适应中值滤波算法

针对自适应中值滤波算法在滤除高浓度椒盐噪声和保留图像边缘细节中的不足,提出了一种改进均值的自适应中值滤波(IMAMF)算法。该算法采用扩充图像边界的方式,使得原图像的边界点能在自适应的滤波窗口下参与噪声检测和滤波处理,并在检测噪声和信号时,增加了噪声阈值判定,将存在噪声的像素点用修正后的均值滤波器值输出,信号点则用原始灰度值输出。为了验证算法的可行性,采用了5种不同的算法进行仿真对比分析,并从主观角度和客观指标上进行效果评价。试验结果表明:该算法能有效滤除浓度为10%～90%范围内的椒盐噪声,且图像细节和边缘信息得到了更好的保留,滤波性能明显优于其他算法。     

Kinetic Modeling the Formation of Low-mature Gases and Analysis of the Possibility to Be Accumulated

At present, shallow gases have received much attention due to low cost in exploration and production. Low-mature gases, as one significant origin to shallow gas, turns to be an important research topic. The present understanding of low-mature gases is confined within some geological cases, and few laboratory studies have been reported. Therefore, the potential and characters of low- mature gases are not clear up to now. Here, two premature samples （one coal and the other shale） were pyrolyzed in a gold confined system. The gaseous components including hydrocarbon gases and non-hydrocarbon gases were analyzed. Based on kinetic modeling, the formation of low-mature gases was modeled. The results showed that during low mature stage, about 178 mL/gTOC gas was generated from the shale and 100 mL/gTOC from the coal. Two third to three fourth of the generated gases are non-hydrocarbon gases such as H2S and CO2. The total yields of C1-5 for the two samples are almost the same, 30-40 mL/gTOC, but individual gaseous hydrocarbon is different. The shale has much lower C1 but higher C2-5, whereas the coal has higher C1 but lower C2-5. Hydrocarbon gases formed during low-mature stage are very wet. The stable carbon isotope ratios of methane range from -40‰ to -50‰ （PDB）, in good consistence with empiric criterion for low-mature gases summed up by the previous researchers. The generation characters suggest that the low-mature gases could be accumulated to form an economic gas reservoir, but most of them occur only as associated gases.     

1998年副热带高压中期数值预报产品的误差分析

通过统计和动力学分析结果的验证,可以得到:(1)欧洲中期数值预报产品是预报副高中期活动的重要依据,并且预报值的平移订正不可能对预报准确率有多大的改进。(2)不考虑天文潮汐可能是1998年欧洲中期数值预报产生较大误差的重要原因。(3)进一步分析找到二条判断欧洲中期数值预报因不考虑天文潮汐将发生较大误差的指标: ① 当交点月奇异点月下点 54.7 线与当日20时500 hPa的 50～150 E 范围内副热带急流槽线相重合,并与等温线夹角 α>60 °时,那末若以奇异点后0～2天作为初日,欧洲中期数值预报120 E 588线北界预报将出现连续三天大于等于2个纬距的连续性错误(7/9),反之,将不出现连续性错误(13/13);② 在不满足上述情况下,如果54.7 跋咄ü至迅备咧涞脱骨保?则在交点月奇异点当日出现离散性错误(5/7),反之,将不出现错误(6/6)。(4)1999～2000年汛期实际应用结果基本上证实了上述二个指标。     

控制灌溉对稻田CH4和N2O综合排放及温室效应的影响

采用静态箱-气象色谱法对控制灌溉稻田CH₄和N₂O排放进行了观测,研究控制灌溉模式对稻田CH₄和N₂O排放的影响,并对其温室效应进行了评估。结果表明,控制灌溉稻田CH₄排放通量明显低于淹水灌溉稻田,且主要集中在分蘖前期和中期,全生育期CH₄排放量比淹水灌溉稻田减少73.2%～85.0%。控制灌溉稻田N₂O排放通量在水稻全生育期大部分时间都要大于淹水灌溉稻田,稻季N₂O排放量分别为106.65 mg/m2和96.40 mg/m2,控灌稻田较淹灌稻田增加了10.6%。控制灌溉稻田稻季排放CH₄和N₂O的全球增温潜势(GWPs)为726 kg/hm2,较淹水灌溉稻田减少了59.1%。控制灌溉模式能显著降低CH₄和N₂O综合排放的全球增温潜势。     

基于ArcGIS的协同克里金法预测燃气管网空间分布

燃气低压管网的合理高效规范化管理是燃气普及、管线巡查、实时预警和应急响应的基本保障。我国燃气管网发展虽然迅速,但终端用户的低压管网仍存在很多规划和管理上的不足。互联网大数据时代的兴起为燃气行业终端用户的智能管理提供了潜在机会。本文基于GIS空间分析功能,把燃气管网系统扩展深入到街道级管理模式,分析区域管理中低压管网的空间分布及影响因素,采用协同克里金插值预测城郊和乡镇区域低压管网空间分布态势,并对预测结果进行了精度评价。实验区验证结果表明,预测模型较好,其平均误差、均方根误差、标准化均方根误差均在容错范围内。该研究可为燃气管网规划和市场开发等工作提供决策依据,为智慧燃气服务民生提供思路和方案。