Sedimentary characteristics and genetic mechanism of the giant ancient pockmarks in the Qiongdongnan Basin,northern South China Sea

In the late Miocene, giant ancient pockmarks, which are fairly rare globally, developed in the Qiongdongnan Basin. In this paper, to determine the sedimentary characteristics and genetic mechanism of these giant ancient pockmarks in the Yinggehai Formation of the Qiongdongnan Basin, based on high-resolution 3D seismic data and multiattribute fusion technologies, we analyzed the planar distribution and seismic facies of the ancient pockmarks and compared the characteristics of the ancient pockmar...     

健脾固妊汤治疗脾胃虚弱型妊娠呕吐30例临床观察

目的：探讨健脾固妊汤治疗脾胃虚弱型妊娠呕吐的临床疗效。方法：将60 例脾胃虚弱型妊娠呕吐患者按照随机数字表法分为治疗组和对照组,每组各30 例。对照组予西医常规治疗,治疗组在对照组治疗的基础上配合健脾固妊汤治疗。比较2 组临床疗效、血清胃泌素（GAS）含量、血清血管活性肠肽（VIP）含量、尿酮体转阴时间、住院时间以及安全性。结果：治愈率治疗组为80.00%（24/30）,对照组为70.00%（21/30）,差异有统计学意义（P<0.05）。治疗后,2组GAS和VIP水平均显著下降,且治疗组下降幅度更大,差异均有统计学意义（P<0.01或P<0.05）。治疗组尿酮体转阴时间、住院时间均短于对照组,差异有统计学意义(P<0.01)。2组治疗过程中均未出现明显的不良反应。结论：健脾固妊汤联合西药治疗脾胃虚弱型妊娠呕吐疗效颇佳,值得临床推广应用。     

海洋平台阴极保护监测系统的研制及应用

介绍了自行研制的海洋平台阴极保护监测系统，它由双电极电位测量探头，牺牲阳极输出电流测量探头，信号传输电缆系统和微机数据采集系统组成，并结合近10a其在南海北部近海石油开发区的应用和运行状况，对阴极保护监测系统的性能，作用及意义进行了系统论述，以期为进一步的工作奠定基础。     

厄尔尼诺的发生与行星运动

厄尔尼诺(El Ni(?)o)现象是海-气耦合系统异常变化的表现,其起因可能不是唯一的,行星运动对地球运动的影响可能会导致El Ni(?)o的发生。根据4个半世纪内El Ni(?)o发生的历史资料,分析其发生和行星运动的关系,得出的结论是:木星赤纬的变化和火星大冲与El Ni(?)o。的发生有显著的关系,表明这2颗行星的运动可能影响El Ni(?)o的发生。文中还根据分析结桌和El Ni(?)o混沌机制的观点,探讨了行星运动对海-气系统变化的影响机制。     

A note on solitary waves along potential vorticity fronts on anf-plane

The effects of short waves on the propagration of velocity discontinuity along the interface of two uniform potential vorticity, zones on anf-plane is examined. It is shown, using a multiple scale analysis, that the dispersion introduced by the short waves can balance the nonlinear steepening effects predicted by the semigeostrophic theory. The time evolution of a shear disturbance along the front is governed by a Korteweg-de Vries equation. Numerical solutions of the solitary waves along the front are presented.     

浅海内波垂直模式方程的一种解析解

给出了一些海区实测浮力频率剖面的数学模型.利用超几何函数对内波垂直模式方程进行了解析求解,得到内波模式方程的解析解和频散方程.利用得到的解析解给出了一种理想条件下内波前三阶简正模式的结构.     

中国对虾染色体制备及染色体形态的研究

以中国对虾原肠期胚胎为材料，采用整体低渗法和管渗法均制备了染色体。通过比较发现，管渗法制备的染色体比整体低渗法的形态好。本文对制备中国对虾染色体技术方面的问题进行了探讨。通过作者的观察，了解到中国对虾染色体徐正常特征外，还存在较特别的形态特征，如主缢痕增强，次缢痕变化，同源配对等。并对产生这些形态特征的原因进行了解释。     

脂质体悬浮液结晶对其冻干品质影响的研究

利用低温显微镜系统对含有不同浓度海藻糖的脂质体悬浮液 ,在不同的降温速率下的结晶现象进行显微研究 ,得出不同条件下的冰晶生长图像 ;并研究脂质体在不同的降温速率下的冻干过程 ,比较了不同降温速率下的冻干脂质体的外观和冻干脂质体复水后的囊泡粒径变化。结果表明 ,对于液体药品快速冻结后得到的冻干品质量优于慢速冻结。     

GeoSwath相干多波束系统原始数据的解析

通过分析GeoAcoustics公司的GeoSwath相干多波束系统的二进制原始文件结构,使用VC 6.0设计出各传感器字段的数据结构,并编程实现相干多波束数据的提取和图形可视化。该技术方法对于GeoSwath系统多波束数据的提取和分析处理有参考意义。     

Differential gene expression in the body wall of the sea cucumber(Apostichopus japonicus) under strong lighting and dark conditions

Sea cucumber, Apostichopus japonicus is very sensitive to light changes. It is important to study the influence of light on the molecular response of A. japonicus. In this study, RNA-seq provided a general overview of the gene expression profiles of the body walls of A. japonicus exposed to strong light("light"), normal light("control") and fully dark("dark") environment. In the comparisons of "control" vs. "dark", "control" vs. "light" and "dark" vs."light", 1 161, 113 and 1 705 differentially expressed genes(DEGs) were identified following the criteria of|log_2 ratio|≥1 and FDR≤0.001, respectively. Gene ontology analysis showed that "cellular process" and "binding"enriched the most DEGs in the category of "biological process" and "molecular function", while "cell" and "cell part" enriched the most DEGs in the category of "cellular component". And the DEGs were mapped to 214, 41 and229 pathways in the Kyoto Encyclopedia of Genes and Genomes database, and 51, 2 and 57 pathways were significantly enriched, respectively. Light-specific DEGs identified in this study will be important targets for further investigation to establish the biochemical mechanisms involved in the adaption of this sea cucumber to changes in the level of environmental light.