首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
《热带亚热带植物学报》2004年10月-2005年5月审稿人按姓氏汉语拼音排序如下,谨致谢意 如有遗漏或错误.请与编辑部联系蔡联炳,曹美莲,常杰,陈邦余,陈清潮,陈如凯,陈润政,陈维伦,陈晓英,陈锡沐,陈贻竹,陈章和, 陈志谊,陈忠毅,陈祖铿,邓秀新,邓云吃,J烟扬,黄鸣,董什勇,东秀珠,高贤明,高云超,葛颂, 耿世磊,胡迪琴,胡晗华,何生根,何之常,何关描,胡英杰,胡新文,胡正海,黄学林,黄彰欣,黄凤宽 姜慧芳,蒋高明,蒋跃明,靖元孝,季作梁,康文星,赖小平,李斌,李秉滔,李立家,李良材,李良壁, 李鸣光,李瑞声,李绍华,李锡文,李用华,李志安,梁峥,廖柏寒,廖景平…  相似文献   

2.
中国锦鸡儿属植物资源研究—分布及分种描述   总被引:48,自引:5,他引:43  
记录了锦鸡儿属(Cargana Fabr.)植物的资源分布,并对该属66种植物(小叶锦鸡儿,柠条锦鸡儿,中间锦鸡儿,树锦鸡儿,黄刺条,锦鸡儿,红花锦鸡儿,密叶锦鸡儿,鬼箭锦鸡儿,毛掌叶锦鸡儿,白毛锦鸡儿,甘蒙锦鸡儿,矮锦鸡儿,繁花锦鸡儿,矮脚锦鸡儿,狭叶锦鸡儿,毛刺锦鸡儿,柄荚锦鸡儿,秦晋锦鸡儿,北京锦鸡儿,南口锦鸡儿,五台锦鸡儿,昆仑锦鸡儿,库车锦鸡儿,短叶锦鸡儿,变色锦鸡儿,二色锦鸡儿,白皮锦鸡儿,青甘锦鸡儿,川西锦鸡儿,云南锦鸡儿,猫耳锦鸡儿,陕西锦鸡儿,长爪锦鸡儿,甘肃锦鸡儿,扁刺锦鸡儿,青海锦鸡儿,二连锦鸡儿,弯枝锦鸡儿,昌都锦鸡儿,楔翼锦鸡儿,高山锦鸡儿,藏北锦鸡儿,尼泊尔锦鸡儿,沦江锦鸡儿,吉降职一锦鸡儿,文县锦鸡儿,粗刺锦鸡儿,西藏锦鸡儿,刺锦鸡儿,粉刺锦鸡儿,草原锦鸡儿,阿拉套锦鸡儿,伊犁锦鸡儿,阿尔泰锦鸡儿,镰叶锦鸡儿,中亚锦鸡儿,邦卡锦鸡儿,绢毛锦鸡儿,白刺锦鸡儿,多叶锦鸡儿,新疆锦鸡儿,刺叶锦鸡儿,粗毛锦鸡儿,准噶尔锦鸡儿,吉尔吉斯锦鸡儿)的特征,习性及分布进行了详细描述。  相似文献   

3.
EDITORLIANG DongcaiInstitute of Biophysics, Chinese Academy of Sciences, Beijing 100101, ChinaEDITORIAL BOARDCHEN Weifeng, Peking University Health Science Center, Beijing, ChinaWU Zuze, Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, ChinaXU Zhihong, College of Life Sciences, Peking University, Beijing, ChinaYANG Hongyuan, College of Life Sciences, Wuhan University, Wuhan, ChinaZHANG Qifa, Huazhong Agricultural University, Wuhan, China  相似文献   

4.
鄱阳湖渔业资源现状及其环境监测   总被引:20,自引:1,他引:19  
1997-1999年对鄱阳湖区渔业资源与环境进行了动态监测,统计渔获物2778kg,生物学测定1627尾,采集到鱼类122种,隶属于12目21科77属,其中鲤科鱼类种类最多,计65种,占53.3%,湖区渔获物个体偏小,以1-2龄鱼为主,鲤、鲫基本上是当年鱼,鄱阳湖现有鲤,鲫产卵场33处,主要分布在湖区东,南,西部,年均有效产卵面积616.66km^2,年均产卵量56.85亿,鄱阳湖区湖口,蛤蟆石,星子,康山水域湖水的pH,COD,Cr^ 6,Cd,Zn,Cu,Pb,总磷,氨氮,总汞均未超过渔业水质标准,鄱阳湖区水质良好。  相似文献   

5.
生物学防伪技术(一)   总被引:3,自引:0,他引:3  
利用人体生物学特征识别个人,证明身份的防伪技术已应用于公安,保安,海关,金融等领域,由于生物学特征,人各不同,不能伪造,倍受重视,目前国内外应用的有:人的指纹,掌纹,手形,指形,眼底视网膜图像,眼虹膜图像,手背静脉图像,面容,声纹,气味,签字动态以及DNA与免疫学等防伪技术。  相似文献   

6.
AncistrotanzanineCandRelated 5 ,1′and 7,3′CoupledNaphthylisoquinolineAlkaloidsfromAncistrocladustanzaniensis1GerhardBringmann ,MichaelDreyer ,JohanH .Faber,PeturWeiheDalsgaard ,DanSt rk ,JerzyW .Jaroszewski,HenryNdangalasi,FrankMbago ,RetoBrun ,S renBr ggerChristensenInstitutfu¨rOrganischeChemiederUniversita¨tWu¨rzburg ,AmHubland ,D 970 74Wu¨rzburg ,Germany ,DepartmentofMedicinalChemistry ,DanishUniversityofPharmaceuticalSciences,Universitetsparken 2 ,DK 2 10 0Copenhag…  相似文献   

7.
张泽荣   《广西植物》1986,(4):265-271
<正> 落叶直立灌木,高0.5—米;小枝不规则分枝,纤细,圆柱形,当年生枝褐色,密被黄绿色丝状绒毛,一年生枝紫红色,微具绒毛,多年生枝灰褐色,无毛;冬芽小,卵形,密被灰褐色长绒毛。叶互生,膜质或薄纸质,矩圆形或矩圆状披针形,长1—2.8厘米,宽0.5—1.6厘米,顶端钝形,稀稍钝形,基部圆形或钝形,稀宽楔形,边缘全缘,稀反卷,初微被淡绿色丝状柔毛,上面鲜绿色,下面淡绿色,两面幼时被淡绿色丝状柔毛,中脉在上面扁平,下面稍明显,侧  相似文献   

8.
神农櫟(新种)(见图) 乔木,高10米,枝略粗壮,一年生枝具沟槽,紫棕色,无毛,二年生枝棕黑色,较老的枝具灰色的树皮,皮孔圆形,平坦,淡黄色,明显。芽鳞棕色,初被微柔及微纤毛,后渐脱落,最后无毛。叶近革质,二年后脱落,狭披针形,长6—8厘米,长为宽度的3—5倍,顶端渐尖,基部楔尖,沿叶柄下延,叶柄长2—3厘米,腹面平坦,基  相似文献   

9.
吉占和 《植物研究》1981,1(1-2):109-121
植株很小,匍匐状。假鳞茎近圆形,粗约3-4毫米,彼此紧靠而生于匍匐的根状茎上,呈念珠状,顶生1叶。叶革质,卵状披针形或矩圆状舌形,长4-10毫米,宽2-3毫米,先端锐尖,基部收窄,无明显的柄。花葶从假鳞茎基部侧旁发出,1-2个,直立,纤细,圆柱形,高7-10毫米,顶生1朵花,基部被长约1毫米的筒状膜质鞘;花梗连同子房长约4毫米,比花苞片长,花苞片杯状,长约1毫米,先端锐尖,花红色,中曹片披针形或矩圆形,直立伸展,长5.5-7毫米,宽约1.8毫米,先端渐尖或锐尖,具3脉,侧萼片披针形,直立伸展,与中萼片近等长,宽约2毫米,先端长渐尖,具4-5脉,花瓣卵状矩圆形,长2.2毫米,宽1毫米,先端钝,具1脉,全缘,唇瓣披针形,长4毫米,中部以上下弯,先端增厚呈球状,且向下歪,基部具凹槽,与蕊柱足末端连合而形成不动的关节,唇盘平滑,蕊柱粗短,长约1毫米,蕊柱齿狭镰刀状,长约1.1毫米,蕊柱足长1.5毫米,向上弯曲,其游离部分长约7毫米;药帽半球形,表面平滑。  相似文献   

10.
西藏丁青蛇绿岩特征、时代及其地质意义   总被引:15,自引:0,他引:15  
西藏东部丁青蛇绿岩套层序齐全,深海沉积硅质岩中发现了晚三叠世放射虫,主要有Capnuchosphaera the-loides,C.triassica,Xenorum flexum,Pseudostylosphaera gracilis,Veghicyclia austriaca,Perispongidium tethyus,Spongostylus toltilis,S.carnicus,Annulotriassocampe sulovensis,Canoptum triassicum,Poulpus piabyx,Xiphotheca karpenissionensis,Laxtorum(?)carnicum,Multimonilis pulcher,M.japonicus,Palaeosaturnalis trias-sicus,Pseudoheliodiscus latus等,其时代arnian期,表明丁青带三叠纪发育较成熟洋盆,为新特提斯演化提供了证据。  相似文献   

11.
12.
13.
正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases  相似文献   

14.
Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.  相似文献   

15.
16.
17.
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.  相似文献   

18.
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.  相似文献   

19.
The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.  相似文献   

20.
肝癌中HBV和HCV基因和抗原的分布及意义   总被引:1,自引:0,他引:1  
采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号