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41.
文章对RSS技术及其内容的组织和发布做了详细的阐释,分析了高校图书馆采用RSS技术发布信息的九大特点,设计了图书馆信息服务流程图,并且总结了当前图书馆应用的RSS几种模式,指出了当前图书馆应用RSS信息服务模式存在的问题。 相似文献
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以记人事为主的《世说新语》以搜集民间故事为能事,同时肩负着补正史之阙的重任,从而使其成为侠义故事的一个重要归宿。仗义济世、快意恩仇、好勇尚武是《世说新语》侠义故事的三大主要类型。《世说新语》自身的文史价值,以及里面的侠客形象、人物刻画手法都对后代侠义小说的影响甚为深远。 相似文献
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M. J. Page 《Journal of Natural History》2018,52(17-18):1157-1180
Colonial ascidians collected from wharf piles and natural substrata from Bluff Harbour and Stewart Island in the South Island of New Zealand are described in this paper. Two species, Lissoclinum violaceum sp. nov. and Didemnum marineae sp. nov. are new to science and described for the first time. The ascidian fauna in this region is a mixed assemblage of southern species, species with a New Zealand-wide distribution, and two species with trans-Tasman affinities.
www.zoobank.org/urn:lsid:zoobank.org:pub:37DC0D4B-8FB9-4F1D-A5A0-E9CAB3203447 相似文献
46.
针对红外小目标占用像素较少、背景相似性强、网络容易受到背景杂波信息干扰的问题,提出了一种基于注意力机制的红外小目标检测方法。利用注意力机制模块抑制背景杂波,增强小目标特征,并使用红外小目标检测模块实现检测任务;为了增强网络鲁棒性,通过高斯噪声与原图通道堆叠输入的数据增强方式提升网络抗杂波干扰的能力。实验表明,提出的方法在MDvsFA数据集中的性能超过了目前最新的对比算法。 相似文献
47.
《Journal of Natural History》2012,46(13):1601-1619
Members of the bryozoan family Petraliellidae share the capacity to develop basal rhizoids, which anchor the unilaminar, semi-repent parts of the colonies above the substratum, and enable them to overgrow other, competing sessile forms. Little is known of the larval behaviour and settlement, or the early astogeny of species. Ancestrulate colonies of the Australian Tertiary lunulitiform species Smittia biincisa are referred to the genus Riscodopa, and together with Riscodopa paucipora sp. nov. are described and compared with the Recent species R. cotyla and R. parva from New Zealand, and with R. hyalina sp. nov. from New South Wales, Australia. All the Recent species are known to develop basal rhizoids, and an early astogeny similar to that of many other small, rooted bryozoans, comprising the post-metamorphosis development of a binary complex, including rhizoid and feeding elements, is inferred for Riscodopa. Observations on living Hippopetraliella magna from Queensland suggest that both the ancestrular morphology and early astogeny show a capacity for semi-repent growth, even though they do not include rhizoid development. Larvae metamorphose without direct attachment, and the ancestrula develops elongated, partially calcified supporting processes, which raise the early stages of growth above the substratum. A similar kind of ancestrula has been found in preserved specimens of Mucropetraliella ellerii. 相似文献
48.
《Journal of Natural History》2012,46(6):697-778
The Neotropical species and genera of the tribe Euderomphalini (Eulophidae: Entedoninae) are revised. Five genera are described as new: Cabeza, including six species (baeostigma (§, ¦), canaliculata (§), laticeps (¦), petiolata (§), planiscapus (§), ugaldei (§)); Itahipeus, including two species (brasilicola (§, ¦), euryceps (¦)); Monterrondo, including one species (aphelosoma (§)); Sifraneurus, including one species (strigifer (§)); Xenopomphale, including one species (sulcata (§)); all above-mentioned species are described as new. Five additional genera are included: Aleuroctonus LaSalle and Schauff, with four species, one described previously: vittatus (Dozier) (§, ¦), and three described here: latiscapus (§), marki, (§, ¦) and metallicus (§); Entedononecremnus Girault, with 14 species, two described previously: krauteri Zolnerowich and Rose (§, ¦), unicus Girault (§, ¦), and 12 described here: bennetti (§, ¦), bimaculatus (§, ¦), convexus (§, ¦), crassicornis (§, ¦), depressus (§), fulgens (§), hansoni (§, ¦), imdasus (§, ¦), parfer (§, ¦), reticulatus (§), tripar (§) and unicarinatus (§); Euderomphale Girault, with two species, one described previously: flavimedia (Howard), and one described here: sulciscapus (§, ¦); Neopomphale LaSalle and Schauff, with 20 species, two described previously: aleurothrixi (Dozier) (§, ¦), quercicola (Dozier) (§, ¦), and 18 described here: azofeifai (¦), cerrobius (¦), depilis (§), dichrous (§, ¦), erecta (¦), graciliclava (§), longicornis (¦), longipilis (§, ¦), nonaequa (§, ¦), noyesi (§), pinguicornis (§, ¦), prymna (§), rubescens (§, ¦), rubii (§), silvestris (¦), transversa (§), umbonata (§, ¦), xenipennis (§); Dasyomphale LaSalle and Schauff, including one species (chilensis LaSalle and Schauff). The genera are placed in either one of three genus-groups, one of which is newly created. The species Euderomphale quercicola Dozier is newly combined to Neopomphale. Lectotypes are designated for Entedononecremnus unicus Girault, Euderomphale quercicola Dozier and Gyrolasia flavimedia Howard. Key to genera and species are included. 相似文献
49.
《Journal of Natural History》2012,46(9-10):509-522
Three hundred and ninety‐nine individuals representing 10 species of Litoria and five species of Nyctimystes (Hylidae), L. arfakiana, L. bibonius, L. eucnemis, L. genimaculata, L. impura, L. infrafrenata, L. modica, L. nasuta, L. thesaurensis, L. wollastoni, N. gularis, N. kubori, N. papua, N. pulcher and N. semipalmatus collected in Papua New Guinea were examined for helminths. Gravid individuals representing one species of Monogenea (Parapolystoma bulliense), one species of Digenea (Mesocoelium monas), 18 species of Nematoda (Aplectana krausi, Aplectana macintoshi, Aplectana zweifeli, Cosmocerca novaeguineae, Falcaustra papuensis, Icosiella papuensis, Maxvachonia adamsoni, Maxvachonia ewersi, Meteterakis crombiei, Moaciria moraveci, Ochoterenella papuensis, Oswaldocruzia bakeri, Parapharyngdon maplestoni, Parathelandros allisoni, Parathelandros andersoni, Physalopteroides milnensis, Rhabdias australiensis, Seuratascaris numidica) and one species of Acanthocephala (Acanthocephalus bufonis) were found. Also included were immature forms representing one species of Cestoda (as a metacestode), three species of Nematoda (Abbreviata sp., Rictulariidae gen. sp., Ascarididae gen. sp. in cysts), one species of Acanthocephala (unidentified cystacanth), and one species of Pentastomida [Raillietiella sp. (nymph)]. The mean helminth species richness for infected hosts was 1.3±0.6 SD (range one to three species). Sixty‐seven new host records and two new locality records are reported. 相似文献
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《Journal of Natural History》2012,46(15-16):863-880
Adults and associated larvae of Rentonium bicolor sp. nov. are described from New Zealand (North Island) and represent the first associated larvae of the Rentoniinae. Larvae and adults were found among the fruiting bodies of Hypocrea rufa (Pers.) Fr. (Ascomycota: Hypocreaceae). The larvae are morphologically similar to a previously described and undetermined larva but differ from it by the unpaired, hook-like urogomphus, four stemmata, and the apical antennal seta subequal in length to the antenna. Potential implications for phylogeny of Cleroidea are discussed. A catalogue of the genera and species of Rentoniinae is provided, along with comments about the status of Rentonellum loebli Kolibá?.http://www.zoobank.org/urn:lsid:zoobank.org:pub:936541AB-1802-4C09-9032-7EF1FAAC912E 相似文献