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1.
本文记述了采自吉林省临江林业局闹枝林场和望江楼的小甲螨科 Orib-atellidae 小甲螨属 Oribatella 一新种——临江小甲螨 Oribatella lin jiangensis sp.nov,对新种的形态特征进行了描述,并对新种与属内近似种进行了比较鉴别。文中所用量度单位均为微米(μm)。  相似文献   

2.
跗线螨亚科三新种和一新纪录(蜱螨亚纲:跗线螨科)   总被引:1,自引:1,他引:0  
本文记述跗线螨亚科3个新种:修复奇跗线螨Xenotarsonemus xiufui sp.nov.,开本跗线螨 Tarsone-mus kaibeni sp.nov.,宗辉跗线螨 Tarsonemus zonghuii sp.nov.和1个中国新纪录:Steneotarsonemus vasilje-vae Sharonov,1983.  相似文献   

3.
江镇涛 《江西科学》1993,11(1):37-41
记述了从江西省南昌市酿造厂、制酒厂的豆饼和高粱等内采得食酪螨属(Tyrophagus)一新种,即赣江食酪螨Tyrophagus ganjiangensis sp.nov.  相似文献   

4.
描述中国七叶树Aesculus chinensis 2种新瘿螨和1中国新纪录种,即七叶树谢氏瘿螨,新种Shevtchenkella aesculichina sp.nov.,七叶树大嘴瘿螨,新种Rhyncaphytoptus aesculus sp.nov.和加利福尼亚七叶树谢氏瘿螨Shevtchenkella aes...  相似文献   

5.
本文记述帮佐螨亚科2个中国新纪录属,副帮佐蟥属Parabonziat和新硬瘤螨属Neoscirula;和3新种:三叉副帮佐螨Parabonzia trioxys sp.nov;二齿新硬瘤螨Neoscirula bidens sp.nov和妙峰新硬瘤螨Neoscir-ula miaofengensis sp.nov.  相似文献   

6.
本文报道树跗线螨属一新种 :橄榄树跗线螨 Dendroptus olea sp.nov.,标本采自广东省汕头市饶平橄榄树 Canarium album(L our.) Raeusch叶片上 ,新种模式标本保存在福建省农科院植保所  相似文献   

7.
作者在江西省南昌市从芋头中采得粉螨科(Acaridae)士维螨属(Schwiebea)一新种,水芋士维螨(S.callae nov.sp.);从室内尘屑中采得狭螨属(Thyreophagus)一新记录,伽氏狭螨(T.gallegoi);从豆饼中采得士维螨属一新记录似士维螨(S.similis),在赣州市从糯米中采得食甜螨料(Glycy-phagidae)一新记录属,革染螨属(Grammolichus)及一新记录种爱革染螨(G.eliomys Fain).本文测量单位为μm,模式标本保存于江西大学生物学系.  相似文献   

8.
本文对神蕊螨属研究历史进行了回顾,并重新定义了属征;列出了中国大陆神蕊螨属已知种检索表;描述了二新种:米易神蕊螨A. miyiensis sp. nov. 和阔神蕊螨Agistemuse smpliatus sp. nov. 。  相似文献   

9.
真枝藻属Stigonema Ag.植物在广东省(包括海南岛)分布广,种类多,计有20种和6变种·其中16种和9变种为广东省新记录,6种和5变种为我国新记录,4种为新种,一个为新变种·新种和新变种为:南雄真枝藻Stigonema nanxiongensis sp.nov.、海南真枝藻St.hainanensis sp.nov.、乐昌真枝藻St.lechaingensis sp.nov.、胶团真枝藻St.gelatinosum sp.nov.和畸形真枝藻长殖段变种St.informe var.longihormogo-natum var.nov..本文标本采自海拔300—1200米的高山林区,主要生长于岩石表,多数混生于苔藓植物间.  相似文献   

10.
记述采自广西大明山的曲跗湿螨属一新种:大明山曲跗湿螨A tractides(A tractides)damingshanensis Wang et Jin sp.nov.。新种与勐腊曲跗湿螨A.(A.)menglaensis Jin,1997相似,但EpⅣ后缘与前殖片距离较近,肛孔后于Ⅴ2之间的连线,而后者与前殖片距离较远、肛孔与Ⅴ2之间的连线在同一直线上。模式标本保存于贵州大学昆虫研究所。  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.
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   

13.
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   

14.
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   

15.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

16.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

17.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

18.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

19.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

20.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

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