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1.
系统研究直翅目蚱总科的玛蚱属、拟科蚱属及微翅蚱属在中国的种类,以检索表形式进行分类研究,共计记述玛蚱属26种,拟科蚱属9种,微翅蚱属15种,其中包括2新种及3种新组合,即墨脱玛蚱Mazarredia medogensis sp.nov.、平缘微翅蚱Alulatettix rectimargina sp.nov.二个新种及桂林拟科蚱Cotysoides guilinensis(Deng、Zheng&Wei)comb.nov.、黑背拟科蚱Cotydoides celaenotus(Zheng、Zhang&Dang)comb.nov.、拟西藏拟科蚱Cotysoides paratibetanus(Zheng et Shi)comb.nov.三种新组合.模式标本保存于陝西师范大学动物研究所昆虫标本室.  相似文献   

2.
六种瑞香科植物中双黄酮类化合物的分布   总被引:1,自引:0,他引:1  
<正> 瑞香料植物在世界上约有50属500余种,在我国有9属90余种.该9属分别是瑞香属(Daphne)、荛花属(Wikstroemia)、狼毒属(Stellera)、 沉香属(Aquilaria)、结香属(Edgeworthia)、 鼠皮树属(Rhamnoneuron)、假狼毒属(Steleropsis)、粟麻属(Diathron)和毛花瑞香属(Eriosolena).瑞香科植物具有较显著的生理活性,也多有一定毒性,所以一直为各国药学及化学工作者重视.在我国,该科的主要药用植物有芫花(Daphne genkwa Sieb.et Zucc.)、了哥王[Wikstroemia indica(L.)C.A.Mey]及狼毒(Stellera chamaejasme L.).  相似文献   

3.
报道了近来发现的10个温州植物区系新资料,包括2个温州分布新记录属:芹菊属(Erechtites Rafin)和金刚大属(Croomia Torr.ex Torr.et A.Gray);8个温州分布新记录种:壳斗科的刺叶栎(Quercus spinosa),千屈菜科的耳基水苋(Ammannia auriculata)、多花水苋(Ammannia multiflora),玄参科的江西马先蒿(Pedicularis kiangsiensis),菊科的梁子菜(Erechtites hieraciifolius)、费城飞蓬(Erigeron philadelphicus)和花叶滇苦菜(Sonchus asper),百部科的金刚大(Croomia japonica).  相似文献   

4.
INTRODUCTION Shengmaiyin or Shengmaisan, one of the famous herbal recipes in traditional Chinese medicine, is made from Radix ginseng, Ophiopogon and Schi- sandra. It is used to treat hypotension (Chen et al., 2000; Gui, 2001), cardiovascular system diseases (Qian et al., 2004; Zeng and Zeng, 2004), to increase immunity (Wu et al., 1997; Guo et al., 2004) and cure other diseases (Li et al., 1996; Liu et al., 1998; Fang et al., 2000; Yi et al., 2003; Xu et al., 2003; Wang et al., 200…  相似文献   

5.
报道了产于中国海南省狒蛛科棒刺蛛亚科Selenocosmiinae缨毛蛛属一新种:敬钊缨毛蛛Chilobrachys jingzhao.sp.nov.0通过对海南捕岛蛛Selenocosmia hainana Liang et al.,1999的研究,认为该种应转移到捕鸟蛛亚科Ornithoctoninae的捕鸟蛛属Ornithoctonus,并对海南鸟蛛Ornithoctonus hanina(Ling et al.,1999)的雌蛛及新发现的雄性进行了描述和图示。  相似文献   

6.
INTRODUCTION Over the recent decades extensive research on atmospheric particles in urban environments was carried out. Most of the following papers refer to their authors’ contribution to air pollution and the effects on human health (Dzubay and Mamane, 1989; van Borm et al., 1989; 1990; Rojas et al., 1990; Paoletti et al., 1991; 1999; Al-Rajhi et al., 1996; McMurry et al., 1996; Querol et al., 1996; BéruBé et al., 1997; Esteve et al., 1997; Harrison et al., 1997; Zou and Hooper…  相似文献   

7.
昌都鹅观草 新种 图1 Roegneria elytrigioides Yen et J.L.Yang sp.nov. Species nova affinis Roegneriaealashanice Keng,sed distinctioribusrhizomatibus longioribus,spicis longior-ibus,spiculis 5—12,glumis et lemma-tibus apicibus sobtusis,antheris long-ioribus differt.Elytrigiαe intermediαe(Host)Nevski affinis,sed culmistenuibus,glumis persistentibus differt.  相似文献   

8.
llex strigillosa T.R.DUDLEY,sp.nov. 〔Section Pseudoaquifolium S.-Y.HU(1950)Series Lougecaudatae S.-Y.HU(1950)〕. DIAGNOSIS: A I.kengii S.-Y.HU(1950)affinis sed ramulis et gemmis terminalis,dense cinerascentibus puberulento-strigillosis,stipulis tenuiter membranaceis minutis0.1mm longis vel minus fugacibus cito caducis,petiolis denso cinerascentibuspuberulento-strigillosis aliquado subglabris laminis versus,laminis foliorum mino-ribus 4—7.5cm longis 1—2cm latis basibus acutis ad attenuatis apicibussensim acuminatis vel caudato-acuminatis acuminibus brevioribus 5—10(—15)mm longis marginibus integris vel subintegris conspicue sinuolatis et apicibus  相似文献   

9.
一、引言 石蒜属Lycoris Herb.全世界约有20多种,其中已做过细胞染色体计数者计有17种。本文继红蓝石蒜Lycoris haywardii Traub和换锦花L.sprengeri Comes exBaker以及长简石蒜L.longituba Y.Hsu et Fan,玫瑰红石蒜L.rosea Traub etMoldenke,石蒜L.radiata(L′Her.)Herb.和矮小石蒜L.radiata var.pumila Grey(以上均待发表)之后,对安徽石蒜L.anhweiensis Y.Hsu et Fan和中国石蒜L.chinensis Traub的染色体进行计数和核型的描述和分析,旨在为今后探讨石蒜属的核型进化和种系发生提供必要的资料。  相似文献   

10.
INTRODUCTION Among methods used for flocculation control by chemical coagulant dosage, are mathematical model, on-site test equipment simulation, stream current measurement, aggregates equivalent diameter detec-tion, etc. (Li and Wilkinson, 2005; Werner et al., 2001); and many apparatus such as zeta potentiometer,stream current detector, photometric dispersion ana-lyzer, particle size analyzer, etc. (Chakraborti et al., 2003; Huang, 2005; Rossi et al., 2002; Swift et al., 2004) were app…  相似文献   

11.
An efficient method for tracing planar implicit curves   总被引:1,自引:0,他引:1  
INTRODUCTION Tracing a planar implicit curve f(x, y)=0 on a rectangular region [xl, xr]×[yb, yt] is of great interest in Computer-Aided Design and Computer Graphics. While parametric curves are easy to plot, plotting implicit curves is a challenging problem. Planar im- plicit curve plotting method can be classified into two categories (Shou et al., 2005; Martin et al., 2002; Lopes et al., 2002). In the first category are subdivi- sion methods (Shou et al., 2005; Martin et al., 2002) …  相似文献   

12.
INTRODUCTION Costimulatory signals play a vital role in T cell activation. B7/CD28 and CD40/CD40L have been well-established as important costimulatory pathways, with the blockade of either resulting in suppression or anergy of T cells associated with prolongation of graft survival (Akalin et al., 1996; Bolling et al., 1996; Kita et al., 1999; Reddy et al., 2001; Laumonier et al., 2003; Thiel et al., 2005). Cytotoxic T lymphocyte associated antigen-4 (CTLA4), a ligand for B7, de-…  相似文献   

13.
Promoter trapping in Magnaporthe grisea   总被引:1,自引:0,他引:1  
INTRODUCTION Magnaporthe grisea is a filamentous ascomy- cete that parasitizes economically important crops, such as barley, wheat, and rice (Talbot, 2003). It is also a good experimental model for studying fungal pathogenesis by both classical and molecular genetics (Dean, 1997). In recent years, many techniques have been developed to identify functional genes in M. grisea (Kamakura et al., 1999; Rauyaree et al., 2001; Takano et al., 2003; Irie et al., 2003; Lu et al., 2005). Of these…  相似文献   

14.
报道了浙江诸暨山区的蔷薇科悬钩子属Rubus L.一新种——陈谋悬钩子R.chenmouanus Z.H.Chen,F.G.Zhang et G.K.Chen.该种叶形、叶片质地和毛被均与寒莓悬钩子R.buergeri Miq.十分相似,不同之处在于其茎直立或拱曲,无匍匐茎,茎节不着地生根;叶片近圆形,直径5–14 c...  相似文献   

15.
INTRODUCTION 3D CAD systems for the feature-based B-rep solid models (Choi et al., 2002; Kim et al., 2003; 2005; Koo and Lee, 2002; Lee et al., 2004; Lee, 2005a) are becoming more suitable for CAD when compared with the conventional polygon-based mul- tiresolution modelling in computer graphics (Cignoni et al., 1998; Schr?der et al., 1992). As illustrated in Fig.1b, the object of the feature-based multiresolution modelling is a solid model where the suppressed ob- jects are form feat…  相似文献   

16.
INTRODUCTION Plants have defense mechanisms against patho-gen infection by inducing systemic resistance in re-sponse to localized pretreatment with biological cotrol agents, thus making them resistant to subsequpathogen infection (Caruso et al., 1999; Hammschmidt, 1999; Mohammadi and Kazemi, 2002; yada et al., 1995; Pozo et al., 2002; Ray et al., 199Biological control of plant pathogens has receivmuch more attention. It is well known that plants amicroorganisms symbiosis is a defense m…  相似文献   

17.
.单项选择1.We hepled the farmers the harvistthe farm last week.  A.on;with     B.to;in  C.in to D.with;on2 .It's dangerous to skate on ice.  A.heavy B.thin  C.thick D.strong3.— Can you come to the evening party? — .  A.Yes,I'd love to  B.I hope you'll do well  C.I'm very busy  D.I don't like it4 .We went for walk after supper.  A.some  B.the   C./   D.a5.— May I speak to Ann,please? — .  A.I'm not Ann  B.One moment,please  C.Certainly not  D.L et me tak…  相似文献   

18.
INTRODUCTION Image registration plays an important role in the fusion of remote sensing, video panorama, medical image processing, etc. (Li et al., 1995; 2004; Brown, 1992; Belongie et al., 2001; Rui et al., 2001). More different than video panorama, the registration of multi-sensor image needs to align the multi-sensor images of the same scene from different sources (Rignot et al., 1991). Multi-sensor image registration is widely used in the fusion of panchromatic images with infrared i…  相似文献   

19.
正1 Introduction In recent years the thermomechanical behavior of soils has attracted more attention due to an increasing number of geotechnical practices involving thermal effects (Bourne-Webb et al,2013;Olgun et al.,2014;Loria et al,2018;Peng et al.,2018;Pinyol et al.,2018;Kaddouri et al.,2019;Mu et al.,2019).  相似文献   

20.
Interval standard neural network models for nonlinear systems   总被引:1,自引:0,他引:1  
INTRODUCTION Neural networks have been successfully em- ployed for controlling nonlinear systems since the 1990’s (Narendra and Parthasarathy 1990; Hunt et al., 1992; Suykens et al., 1996). In these nonlinear control systems, neural networks have been used either for modelling the system to be controlled, or for design- ing a controller, or both. Recently, the robustness issue has been an important focus of research in neuro-control circles (Suykens et al., 1996; Wams et al., 1999; Aya…  相似文献   

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