The effects of intraventricular injection of 6-hydroxydopamine on the sleep of kittens during development]

Intraventricular injection of 6-hydroxydopamine does not modify the states of alertness in the Kitten, if it is performed in the first week of postnatal life. At three weeks of age, it induces the same sleep impairments as those observed in the adult Cat. Therefore, in the immediate postnatal period, sleep control is not achieved through the monoaminergic systems.     

SPECIFYING AGENT-ORIENTED E-COMMERCE SOFTWARE AS ORGANIZATIONAL STRUCTURES

1. Introduction The meteoric rise of Internet andWorld-Wide-Web technologies has createdovernight new application areas for enterprisesoftware, including e-commerce applications.These areas demand software that is robust, canoperate within a wide range of environments,and can evolve over time to cope with changingrequirements. Moreover, such software has to behighly customisable to meet the needs of a widerange of users and sufficiently secure to protectpersonal …     

工业纯钛板材冷轧及退火微观组织和织构演变规律

采用先进电子背散射衍射（EBSD）技术,深入研究了冷轧工艺变化和道次间退火处理对工业纯钛板材微观组织和织构演变的影响规律。通过对比不同一次冷轧变形量样品经退火和二次冷轧加工后的EBSD取向分布图、取向差角分布图和极图得知,一次冷轧产生的孪晶对退火再结晶晶粒尺寸及晶粒取向（织构）产生重要的影响,进而又影响二次冷轧的变形组织和织构特征,使二次冷轧变形孪晶的生成受到一定程度的抑制,孪晶分数随着轧制变形量的提高呈现先升高后降低的规律,同时会降低二次冷轧组织中{0001}基面织构组分。     

Colossal cages in zeolitic imidazolate frameworks as selective carbon dioxide reservoirs

Zeolitic imidazolate frameworks (ZIFs) are porous crystalline materials with tetrahedral networks that resemble those of zeolites: transition metals (Zn, Co) replace tetrahedrally coordinated atoms (for example, Si), and imidazolate links replace oxygen bridges. A striking feature of these materials is that the structure adopted by a given ZIF is determined by link-link interactions, rather than by the structure directing agents used in zeolite synthesis. As a result, systematic variations of linker substituents have yielded many different ZIFs that exhibit known or predicted zeolite topologies. The materials are chemically and thermally stable, yet have the long-sought-after design flexibility offered by functionalized organic links and a high density of transition metal ions. Here we report the synthesis and characterization of two porous ZIFs-ZIF-95 and ZIF-100-with structures of a scale and complexity previously unknown in zeolites. The materials have complex cages that contain up to 264 vertices, and are constructed from as many as 7,524 atoms. As expected from the adsorption selectivity recently documented for other members of this materials family, both ZIFs selectively capture carbon dioxide from several different gas mixtures at room temperature, with ZIF-100 capable of storing 28 litres per litre of material at standard temperature and pressure. These characteristics, combined with their high thermal and chemical stability and ease of fabrication, make ZIFs promising candidate materials for strategies aimed at ameliorating increasing atmospheric carbon dioxide levels.     

Mining Supervised Classification Performance Studies: A Meta-Analytic Investigation

There have been many comparative studies of classification methods in which real datasets are used as a gauge to assess the relative performance of the methods. Since these comparisons often yield inconclusive or limited results on how methods perform, it is often believed that a broader approach combining these studies would shed some light on this difficult question. This paper describes such an attempt: we have sampled the available literature and created a dataset of 5807 classification results. We show that one of the possible ways to analyze the resulting data is an overall assessment of the classification methods, and we present methods for that particular aim. The merits and demerits of such an approach are discussed, and conclusions are drawn which may assist future research: we argue that the current state of the literature hardly allows large-scale investigations. This work was sponsored by the MOD Corporate Research Programme, CISP, as part of a larger project on technology assessment. We would like to express our appreciation to Andrew Webb for his support throughout the entire project, and to Wojtek Krzanowski for valuable comments on a draft of this paper. We would also like to thank the anonymous referees for some very interesting comments, some of which we hope to pursue in future work.