Report of Prionospio complex (Annelida: Polychaeta: Spionidae) from China''s waters, with description of a new species     

ZHOU Jin  LI Xinzheng 《海洋学报(英文版)》2009,28(1):116-127

Nine species of Prionospio complex are recorded from China’s waters, including one new species and six newly recorded species. Prionospio (Prionospio) pacifica sp. nov., is characterized by having first and forth pairs of branchiae pinnate, second and third pairs of apinnate, ventral crest on Setiger 9 and dorsal crests on Setigers 10—25. Apoprionospio kirrae (Wilson, 1990), Prionospio (Aquilaspio) convexa Imajima, 1990, Prionospio (Minuspio) multibranchiata Berkeley, 1927, Prionospio (Prionospio) bocki Sderstrm, 1920, Prionospio (Prionospio) dubia Maciolek, 1985 and Prionospio (Prionospio) paradisea Imajima, 1990 are recorded for the first time from China’s waters.  相似文献   

Aequorea taiwanensis n. sp. (Hydrozoa, Leptomedusae) and mtCOI sequence analysis for the genus Aequorea     

ZHENG Lianming  LIN Yuanshao  LI Shaojing  CAO Wenqing  XU Zhenzu  HUANG Jiaqi 《海洋学报(英文版)》2009,28(1):109-115

Aequorea taiwanensis, a new hydrozoan species from the Taiwan Strait was described using morphological and molecular characteristics. Both morphological and mitochondrial cytochrome oxidase subunit I (mtCOI) data supported A. taiwanensis n. sp. as a valid species. Sequence divergence and genetic distance of A. taiwanensis n. sp., A. papillata and A. conica were analysed based on the mtCOI gene sequences. The mtCOI sequences from these three species of the genus Aequorea showed high variation frequency, with sequence divergences ranging from 9.10% to 11.9%, and pairwise genetic distances ranging from 0.097 to 0.130. MtCOI sequence analysis provided diagnostic molecular systematic characteristics for accurate identification and discrimination of the species of Aequorea or their populations, and will be used to resolve evolutionary relationships among them.It was suggested that 10%—20% pairwise mtCOI sequence differences indicated the specieslevel divergence among congeneric species in the Hydromedusae.  相似文献   

济南张夏组灰岩岩溶地下水供水潜力探讨   总被引：1，自引：1，他引：0       下载免费PDF全文

韩祥银  韩亮  付春升  方庆海  王集宁  刘广哲 《山东国土资源》2008,24(12)

济南南部广布巨厚张夏组灰岩,其中赋存优质丰富的岩溶地下水。出露众多泉水,其流量为800～8000m3/d。该文通过简述济南地区张夏组灰岩岩溶地下水的赋存条件与水文地质特征,概略计算与评价其资源量,论证开发利用这一新水源的可行性,以期为济南供水与保泉开辟新途径。  相似文献   

Distribution and characteristics of volcanic reservoirs in China   总被引：1，自引：0，他引：1  

HUANG Yulong  WANG Pujun  CHEN Shuming 《世界地质(英文版)》2009,12(2):64-79

About forty productive oil/gas fields hosted in volcanic reservoirs have been found since 1957 in fourteen basins of China. They can be simply subdivided into two groups, the east and the west. Reservoir volcanic rocks of the east group are predominantly composed of Late Jurassic to Early Cretaceous rhyolite and Tertiary basalt, preferred being considered as rift type volcanics developed in the circum-Pacific tectonic regime. Those of the west are Permo-Carboniferous intermediate/basic volcanic rocks, being island-arc type ones developed in paleo-Asian Ocean tectonic regime.  相似文献   

聊城西部地热田地热流体特征及开发利用   总被引：1，自引：0，他引：1       下载免费PDF全文

卢政峰  张美芝  马晓东 《山东国土资源》2008,24(6)

聊城西部地热田位于山东省莘县凹陷的南部区内，属C1-Na型地下热水。其中锶达到了命名矿水浓度，碘化物、偏硅酸达到了矿水浓度，偏硼酸达到了有医疗价值浓度。地热水中还含有铁、锰、锂等多种对人体有益的微量元素。该区地热井出水量大，出水温度高，具有极大的开发利用前景。  相似文献   

Taxonomic Studies on a New Marine Ciliate, Apocoleps magnus gen. nov., spec. nov. （Ciliophora, Colepidae）, Isolated from Qingdao, China     

Alan Warren 《中国海洋大学学报(英文版)》2009,8(4):317-321

The morphology and infraciliature of a new marine colepid ciliate, Apocoleps magnus gen. nov., spec. nov., are described based on living observations and silver impregnations. The new genus Apocoleps is characterized by having 8 (vs. 6 in most other related genera) armour tiers, spines at both ends of the cell, 3 adoral organelles and plates with 4 reniform uni-windows. Apocoleps magnus spec. nov. is defined by the following features: body elongated and slightly curved, about 100–120μm× 35–45 μm in vivo; an...  相似文献   

The Galaxy Evolution Explorer UV emission in shell galaxies: tracing galaxy 'rejuvenation' episodes     

R. Rampazzo  A. Marino  R. Tantalo  D. Bettoni  L. M. Buson  C. Chiosi  G. Galletta  R. Grützbauch  R. M. Rich 《Monthly notices of the Royal Astronomical Society》2007,381(1):245-262

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On the origin of the dichotomy of early-type galaxies: the role of dry mergers and active galactic nucleus feedback     

X. Kang  Frank C. van den Bosch  A. Pasquali 《Monthly notices of the Royal Astronomical Society》2007,381(1):389-400

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The Tully–Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation     

Laura Portinari  Jesper Sommer-Larsen 《Monthly notices of the Royal Astronomical Society》2007,375(3):913-924

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Virialization of cosmological structures in models with time-varying equation of state     

Spyros Basilakos  Nikos Voglis 《Monthly notices of the Royal Astronomical Society》2007,374(1):269-275

We study the virialization of the cosmic structures in the framework of flat cosmological models where the dark energy component plays an important role in the global dynamics of the Universe. In particular, our analysis focuses on the study of the spherical matter perturbations, as the latter decouple from the background expansion, start to 'turn around' and finally collapse. We generalize this procedure, taking into account models with an equation of state which vary with time, and provide a complete formulation of the cluster virialization attempting to address the non-linear regime of structure formation. In particular, assuming that clusters have collapsed prior to the epoch of z _f≃ 1.4, in which the most distant cluster has been found, we show that the behaviour of the spherical collapse model depends on the functional form of the equation of state.  相似文献