Dinosaur Footprints of Early Cretaceous in Site 1 ,Yanguoxia ,Yongjing Country ,Gansu Province

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A Large Therizinosauroid （Dinosauria： Theropoda） from the Early Cretaceous of Northwestern China

We herein describe an associated partial postcranial skeleton of a theropod dinosaur discovered in the Lower Cretaceous Xinminpu Group of the Yujingzi Basin, in the Jiuquan area of Gausu Province, northwestern China. Features of its humerus, such as strongly expanded proximal and distal ends, a well developed medial tuberosity, distal condyles expressed on the humeral cranial surface, and a hypertrophied entepicondyle, definitively establish the therizinosauroid affinities of the specimen. It differs from other therizinosauroids in having a shallow, poorly demarcated glenoid fossa with a prominent rounded and striated tumescence on the dorsomedial surface of its scapular portion, and a pubis with a strongly concave cranial margin. It represents a new taxon, Suzhousaurus megatherioides gen. et sp. nov. Cladistic analysis recovers Suzhousaurus as the sister taxon of Nothronychus mckinleyi from the mid-Cretaceous of western North America; together, they are basal members of the Therizinosauroidea, more derived than the Early Cretaceous Falcarius and Beipiaosaurus but less derived than Alxasaurus and the Therizinosauridae. Along with ＂Nanshiungosaurus＂ bohlini from possibly coeval beds in the Mazongshan area of northern-most Gansu, Suzhousaurus represents one of the largest-known Early Cretaceous therizinosauroids, demonstrating that this clade attained considerable body size early in its evolutionary history.     

阳江地区显著地震前小震引潮力触发异常的研究

在国内外引潮力触发地震近期一些研究进展的基础上,利用基于区域应力场资料的加卸载响应比时空扫描方法、Schuster检验低p值时程扫描及水平引潮力方位角优势分布来研究阳江地区显著地震前小震引潮力触发异常的问题。     

松辽盆地油气无机成因与勘探方向

松辽盆地中浅层沉积层勘探已接近饱和,随着油气勘探向深层进军,油气无机成因研究在勘探实践中日益重要。徐家围子深层天然气为典型的无机成因天然气。松辽盆地三肇地区扶、杨油层原油“上生下储”模式的否定,为寻找深部油源提供了可靠的事实依据。古潜山油气藏“新生古储”和“侧向运移”模式的否定,为基岩油气藏无机成因提供了可靠的证据。松辽盆地无机成因油气藏研究需要得到有力的支持和保证,因为基岩油气藏勘探是松辽盆地今后首选勘探目标。     

A study on the reaction kinetics of mineral surface adsorption in mix system

The experimental results on adsorption of ions pb²⁺, Zn²⁺ and Ag⁺ onto mineral surfaces in a mix system show that the reaction kinetics of adions adsorbed onto mineral surfaces was mainly controlled by their diffusion rates in solution. The concentration variations can be fit for the second-order rate equation with good determined coefficients r = 0.800 5—0.979 7. In the near neutral solution, the concentration of exchanged ions K⁺ and Na⁺ related to reaction time can be described by the fint-order rate equation with r = 0.855 7–0.997 7. Meanwhile, the complex diffusionexchange rate equation is suitable for describing the ca^{2 +} concentration variation, as ions Pb^{2 +} and Zn²⁺ were adions. Experimental data show that the amount of ions K⁺, Na⁺and Ca²⁺ release is much more than that of adion decrement in solution. This fact may suggest that the complexstion reaction of adions Pb²⁺, Z²⁺ and Ag⁺ with the mineral surfaces was the major reaction process while adions were not entering the phyllosilicate interlayers or CaCO₃ lattice to exchange the ions K⁺, Na⁺ and Ca²⁺ at room temperature. Project supported by the National Natural Science Foundation of China (Grant No. 49773206) and the Natural Science Foundation of Guangdong Province (Grant No. 960504)     

低产低渗裂缝油田吞吐采油试验研究

头台油田是构造—岩性油藏。裂缝型、特低渗透是其显著特点,常规注水开发后经常出现严重的油井水淹,造成油田开发低效。本文以头台油田研究为例,认为对于裂缝型特低渗透油田,采用注水吞吐采油技术,通过套管直接向地层注水,利用储层毛管力作用,进行油水置换,实现单井自注自采吞吐采油,可以改善油田开发效果,减缓产量递减。适合注水吞吐采油基本条件是岩石润湿性为弱亲水和岩石饱和非润湿相。影响注水吞吐采油效果的主要因素是储层吸水状况、微缝发育状况、储层非均质性、注入体积和关井压力等。吞吐采油技术可作为改善裂缝型特低渗透油藏开发效果的一种新的模式来研究和推广。     

云南潦浒第三纪褐煤盆地白泡煤成因特点

云南潦浒褐煤盆地白泡煤在煤层结构、煤岩组分及物理化学性质等方面有着显著的特点，对其分类地位和成因一直存在较大争议作者运用煤岸学、煤化学方法及电子显微技术（选区电子衍射SAD及暗场DF方法）对白泡煤显微组分特征、降解组分超微结构和腐植酸组成等做了系统对比研究。研究结果进一步验证了潦浒白泡煤是以草本植物为主体的草本—木本植物组合体在中位沼泽环境中形成的推论。     

黑龙江汤原断陷第三纪地层层序及时代

依据黑龙江汤原断陷30口井的岩性及古生物资料,建立了汤原断陷古近纪、新近纪地层层序。依据孢粉、藻类、植物和介形类化石建立19个生物化石组合,讨论了各组的时代及其与邻区的对比。依据汤参3井(25.0-100.0m)和互6井(138.5-237.5m)岩性及孢粉组合将道台桥组引入汤原断陷。汤原断陷地层层序为古新统乌云组,始新统新安村组、达连河组,渐新统宝泉岭组,中新统富锦组,上新统道台桥组。     

CINRAD/CD雷达方位伺服系统驱动电源故障分析及处理

对遵义CINRAD/CD新一代多普勒天气雷达运行6年多来发生的8次方位伺服系统驱动电源故障维修工作进行归纳总结。根据故障现象细微差别,将其归纳为3类,并对应分析故障原因,找出具体维修措施,以便于本站维修经验的积累和国内其他同型号雷达维修技术人员参考。     

不同类型黄铁矿对金的吸附实验

在稀溶液状态下的Ａｕ的吸附实验，较好地体现了地质热液过程中吸附作用在金矿成矿方面的重要性。黄铁矿与金的硫氢配合物的作用结果截然不同于黄铁矿与金的氯配合物的作用结果。黄铁矿对金的硫氢配合物的吸附是通过表面络合和静电吸附完成的，且不同类型黄铁矿有明显的吸附差异。矿物表面特性及非均匀催化可能在吸附过程中起了重要作用。金矿中常见的Ａｕ、Ａｓ和ｐ型黄铁矿三位一体的现象可能与Ａｓ对吸附作用的影响有较大关系。而