共查询到10条相似文献，搜索用时 171 毫秒
1.
通过对黄骅坳陷港西断裂带奥陶系灰岩和新近系沙河街组砂岩中11个钻井的岩心包裹体的特征，均一温度和组分等方面的分析，对其所反映的气体来源，形成环境，油气演化以及地质意义进行研究。研究区的包裹体均为次生成因包裹体，气液比在5％～10％之间，根据激光拉曼光谱技术分析组分主要为H2O，CO4和CH4。利用均一温度，结合古地温和埋藏史，发现奥陶系灰岩和新近系沙河街组砂岩中包裹体中流体均捕获于新近纪。对氦同位素的分析发现包裹体中均有幔源氦的侵入．侵入的份额受到NE向港西断层和NWW向徐庄子断层的控制靠近断裂带的灰岩和砂岩中的包裹体含有还原性气体，由断层交汇中心向四周减少。包裹体中烷烃气的成熟度也与断层活动相关，具有从断层交汇中心向四周减小的相似特征。研究区内港西断层和徐庄子断层交汇处不仅是幔源气体上涌的有利通道，也是地热活动强烈的地区，有利于烷烃气的成熟。 相似文献
2.
在倪培等在2003年和丁俊英等在2005年成功开展人工合成包裹体研究的基础上，利用愈合人工水晶裂隙技术，在设定的实验条件下合成了NaCl-CaCl2-H2O体系的流体包裹体。对合成的包裹体进行了岩相学观察，显微测温工作，并结合相应相图分析研究——主要对合成包裹体的低温熔融行为进行探讨。结果表明合成的包裹体捕获了既定组成的流体，其低温相变过程与相应相图吻合。因此，人工合成流体包裹体与天然包裹体相似，天然流体包裹体的各种行为可以参照人工合成流体包裹体；同时，通过人工合成流体包裹体校正补充实验相图，使其更准确的被应用于天然包裹体测定分析。 相似文献
3.
流体包裹体在喀斯特溶洞化学沉积物中广泛分布，这些在化学沉积过程中所形成的流体包裹体蕴藏着大量的古环境演化和气候变迁的重要信息。通过采集杭州灵山洞中更新世形成的钟乳石样品，对不同纹圈中流体包裹体进行测定，研究流体包裹体的特征，利用不混溶气-水包裹体中最大密度判别和计算方法确定六个纹圈中精确的形成温度和压力；根据气-水-岩化学反应平衡热力学方法，计算出CO2成分浓度和古地水中pH值及钟乳石样品形成过程中的CaCO3饱和度等。揭示了杭州地区更新纪古环境演化规律。 相似文献
4.
显微红外测温技术是红外显微镜通过红外成像系统研究不透明和半透明矿物的流体包襄体的丰度和分布特征，并与冷热台相结合，进行流体包襄体显微测温分析的一种技术手段。本文以苏鲁超高压变质带东海榴辉岩中金红石矿床的流体包襄体研究为例，系统介绍了显微红外测温分析技术。结果表明，显微红外测温技术是研究半透明和不透明矿物中流体包襄体的一种十分有效的新手段，可见光和红外光两种光源下流体包襄体的测定不存在系统误差。利用红外显微镜进行半透明·不透明矿石矿物的流体包襄体测定时，循环技术法是测定冰点和均一温度的有效方法。江苏东海地区超高压变质带所经历的早期退变质阶段是金红石矿床的主要形成阶段。显微红外测温技术对研究矿床的成矿流体性质以及矿床成因等具有重要的意义。并将在金属矿床成矿流体的研究领域发挥重要的作用。 相似文献
5.
Indranath Ghosh Debojyoti Bhattacharjee Anjan Kumar Das Goutam Chakrabarti Anindya Dasgupta Subir Kumar Dey 《Indian journal of clinical biochemistry : IJCB》2013,28(1):24-29
The aim of this study was to assess the diagnostic yield of the tumour markers carcinoembryonic antigen, carbohydrate antigen 15-3, carbohydrate antigen 19-9 and carbohydrate antigen 125, in serum and bronchoalveolar lavage fluid in a group of patients with bronchogenic carcinoma. Serum and bronchoalveolar lavage fluid samples were collected in a group of 90 patients with benign or malignant pulmonary diseases. After appropriate processing, tumour markers were determined by enzyme immunoassay. The diagnostic yields (sensitivity, specificity and predictive values) in each environment (serum and bronchoalveolar lavage fluid) were obtained by using "Receivers operating characteristic" curve. Determined individually, carcinoembryonic antigen, carbohydrate antigen 19-9 and carbohydrate antigen 125, showed the greatest diagnostic accuracy in bronchoalveolar lavage fluid. Carbohydrate antigen 15-3 did so in serum. Carcinoembryonic antigen was the most relevant marker in bronchoalveolar lavage fluid. For the factors evaluated in this study, determination of carcinoembryonic antigen, carbohydrate antigen 19-9 and carbohydrate antigen 125 in bronchoalveolar lavage fluid were clinically more useful markers in comparison with serum, although the latter may also be helpful in certain situations. Although there is no specific tumour marker for lung cancer, the combination of several can be used to diagnose most patients with lung cancer and also to rule out false positive and negative cases. 相似文献
6.
Salmanzadeh A Kittur H Sano MB C Roberts P Schmelz EM Davalos RV 《Biomicrofluidics》2012,6(2):24104-2410413
Ovarian cancer is the leading cause of death from gynecological malignancies in women. The primary challenge is the detection of the cancer at an early stage, since this drastically increases the survival rate. In this study we investigated the dielectrophoretic responses of progressive stages of mouse ovarian surface epithelial (MOSE) cells, as well as mouse fibroblast and macrophage cell lines, utilizing contactless dielectrophoresis (cDEP). cDEP is a relatively new cell manipulation technique that has addressed some of the challenges of conventional dielectrophoretic methods. To evaluate our microfluidic device performance, we computationally studied the effects of altering various geometrical parameters, such as the size and arrangement of insulating structures, on dielectrophoretic and drag forces. We found that the trapping voltage of MOSE cells increases as the cells progress from a non-tumorigenic, benign cell to a tumorigenic, malignant phenotype. Additionally, all MOSE cells display unique behavior compared to fibroblasts and macrophages, representing normal and inflammatory cells found in the peritoneal fluid. Based on these findings, we predict that cDEP can be utilized for isolation of ovarian cancer cells from peritoneal fluid as an early cancer detection tool. 相似文献
7.
The control of time-delayed linear differential inclusions with stochastic disturbance is discussed. The feedback law is constructed by the convex hull Lyapunov function. The design objective is to make the closed-loop system exponentially stable in mean square. Finally, a simulation is given to show the effectiveness of this control design. 相似文献
8.
Zuomao Yan 《Journal of The Franklin Institute》2011,348(8):2156-2173
In this paper, a sufficient condition is established for the controllability of fractional-order partial neutral functional integrodifferential inclusions with infinite delay in Banach spaces. The approach used is analytic semigroups and fractional powers of closed operators and nonlinear alternative of Leray–Schauder type for multivalued maps due to D. O'Regan. 相似文献
9.
Emmanuel Bernuau Denis Efimov Wilfrid Perruquetti Andrey Polyakov 《Journal of The Franklin Institute》2014
The paper is reviewing the tools to handle high-order sliding mode design and robustness. The main ingredient is homogeneity which can be checked using an algebraic test and which helps us in obtaining one of the most desired properties in sliding mode control that is finite-time stability. This paper stresses some recently obtained results about homogeneity for differential inclusions and robustness with respect to perturbations in the context of input-to-state stability. Lastly within this framework, most of the popular high-order sliding mode control schemas are analysed. 相似文献
10.
氮化铁磁流体的制备与稳定性 总被引：1，自引：0，他引：1
用等离子CVD法制备了氮化铁磁流体,磁流体中纳米粒子分布均匀,平均粒径为8nm,磁流体有明显的超顺磁性,无磁滞现象;磁流体的饱和磁化强度可达820Gs。对活性剂用量、低场静置、载液粘度和颗粒相浓度等对磁流体悬浮稳定性进行研究,结果表明,活性剂用量为5%左右为最佳,低场静置可以明显提高悬浮稳定性,而颗粒浓度小或载液粘度大时稳定性则较好。为磁流体应用技术提供高性能的氮化铁磁流体。 相似文献