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本文记述了伊朗膜翅目Hymenoptera青蜂科Chrysididae和切叶蜂科MegachiLidae的种类,其中青蜂科7属( Chrysis,Chrysura,Cleptes,Pseudomalus,Trichrysis,Parnopes和Spinolia)10种,切叶蜂科10属( Anthidium, Anthidiellum,Chalicodoma,Coelioxys,Heriades,Hoplitis,Megachile,Osmia,Protosmia 和Stelis)17种。  相似文献   
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Neutrophils are being increasingly recognized as an important element in tumor progression. They have been shown to exert important effects at nearly every stage of tumor progression with a number of studies demonstrating that their presence is critical to tumor development. Novel aspects of neutrophil biology have recently been elucidated and its contribution to tumorigenesis is only beginning to be appreciated. Neutrophil extracellular traps (NETs) are neutrophil-derived structures composed of DNA decorated with antimicrobial peptides. They have been shown to trap and kill microorganisms, playing a critical role in host defense. However, their contribution to tumor development and metastasis has recently been demonstrated in a number of studies highlighting NETs as a potentially important therapeutic target. Here, studies implicating NETs as facilitators of tumor progression and metastasis are reviewed. In addition, potential mechanisms by which NETs may exert these effects are explored. Finally, the ability to target NETs therapeutically in human neoplastic disease is highlighted.  相似文献   
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天牛(鞘翅目Coleoptera:天牛科Cerambycidae)为树木重要的钻蛀性害虫.本文研究了伊朗西北部Arasbaran生物圈保护区及邻近地区的天牛种类,采集鉴定了5个亚科26属33种,提供了一些种类的植物寄主.  相似文献   
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本文根据伊朗食虫虻科AsiLidae的文献资料,记录了伊朗104种食虫虻的130种猎物。这些猎物隶属昆虫纲Insecta的7个目(膜翅目Hymenoptera,双翅目Diptera,鞘翅目CoLeoptera,直翅目Orthoptera,鳞翅目Lepidoptera,半翅目异翅亚目Heteroptera和脉翅目Neuroptera)37科,此外,还有1种蜘蛛也是食虫虻的猎物。  相似文献   
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Action research interventions require use of some form of conceptual frame to guide and evaluate the intervention. Pragmatism offers an explanation of ideas that enables this conceptual frame to be constructed inductively from diverse participants’ ideas. They define ideas as experienced patterns of activity. The purpose of this paper is to explain why and how this pragmatic explanation of ideas can be used to induce an action research conceptual frame. As a demonstration, the paper inducts (emerges) a conceptual frame using idea networking for service providers in an emerging cultural accommodation industry. 50 h of interviews and site visits provided 117 individual idea statements which were networked. The conceptual frame that emerged had five elements: sufficient-legitimation, selected-market, inclusive-boomi, appropriately-financial, and collaboratively-empowered. This provides a coordinated, multi-part, way of evaluating any possible future changes.  相似文献   
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本文记述了伊朗北部GoLestan省的食虫虻种类(双翅目:食虫虻科),总计调查鉴定了食虫虻科的10亚科( ApocLeinae,AsiLinae,Dasypogoninae,BrachyrhopaLinae,Laphriinae,Laphystiinae,Leptogastrinae,Brachyrho-paLinae,Stenopogoninae和Stichopogoninae)17属21种。  相似文献   
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