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1.
本文系统记录了湖北省的草蛉7属15种,包括8新种及4个湖北新记录的属。  相似文献   

2.
本文报导了在湖南吉首德夯发现的蕨类植物分布的新资料.新资料包括湖南新记录9种,湘西地区新记录3个种,属湘西及湖南分布第二个分布点6个种,共18种,它们分别隶属于11科,16属.  相似文献   

3.
山茶科植物增补   总被引:6,自引:0,他引:6  
在从事中国植物志及西藏植物志山茶科资料的整理过程中,发现有许多是未经报导的新植物.除了山茶属Camellia 已有专著论及之外,其他各属仍有不少新的发现.本文记载8个属中的31个种.其中石笔木属Tulcheria12个种,大头茶属Gordonia 4个种,木荷属Schima 7个种,多瓣核果茶属Parapyrenaria 1种,核果茶属Pyrenaria 4种,摺柄茶属Hartia、厚皮香属Ternstroemia 及柃属Eurya 各1种.  相似文献   

4.
本文报导了在湖南吉首德夯发现的蕨类植物分布的新资料。新资料包括湖南新记录9种,湘西地区新记录3个种,属湘西及湖南分布第二个分布点6个种,共18种,它们分别隶属於11科,16属。  相似文献   

5.
河北抚宁柳江盆地中寒武统徐庄组遗迹化石及沉积环境   总被引:3,自引:0,他引:3  
文中记述了所发现的遗迹化石共计13遗迹属、16遗迹种,其中3个新遗迹属、6个新遗迹种和1个未定属种。丰富了我国遗迹化石的材料并讨论了遗迹化石及共代表的沉积环境间的关系。对遗迹化石及沉积物的研究表明:柳江盆地中寒武世的沉积环境转变过程是泻湖—局限潮下带—正常浅海。  相似文献   

6.
我们于1975年及1984年二次对福建省蝗虫进行考察,采到许多标本,同时参看了福建农学院植保系及生物防治研究所所保存的福建蝗虫标本,经分类,共计有蝗虫3科、14亚科、43属、68种,其中有16属20种为福建省新记录。另外还有2新种。新记录属和种在下列种类名录中都用星号*标出。在16个新记录属中,有2个属的3个种,以前在福建省已有记录,现  相似文献   

7.
云南省西南部蚱总科昆虫初步调查(昆虫纲:直翅目)   总被引:3,自引:0,他引:3  
通过对云南省西南部地区的11个县进行蚱总科昆虫的调查,共计采到蚱总科4科21属44种,其中包括15个新种,3个新性别首次发现及5个云南省新纪录。记述了种类名录与分布,刺翼蚱科2新种、短翼蚱科6新种及2个新性别首次发现。模式标本保存于大理学院生命科学与化学学院生物标本室。  相似文献   

8.
本文主要介绍了甘肃蓼属的种类、种间区别、地理分布及经济价值。在研究鉴定过程中作者发现了两个新异名及1个新等级。  相似文献   

9.
辽宁省蝗虫的初步调查   总被引:4,自引:0,他引:4  
本文记录采自辽宁省千山及老秃顶山地区蝗总科及蚱总科蝗虫40种,分属于7科31属,其中32种为辽宁省新纪录,并有2新属5新种及Ⅰ种国内新纪录.本文记述其中的1新属3新种,即辽蝗属Liaoacris新属,黄翅辽蝗Liaoacrisochropteris新种,红翅安秃蝗Anapodisma rufupenna新种,辽宁雏蝗Chorthip-pus liaoningensis新种.  相似文献   

10.
中国竹亚科杂记   总被引:3,自引:1,他引:2  
本文主要讨论玉山竹属(Yushania)、拐棍竹属(Fargesia)及与之有关属的界限,另外发表七个新种,一个新变种及六个新组合。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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