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The juxtaposed compound eye and organ of Bellonci in Haploops tubicola (Crustacea:Amphipoda)- the fine structure of the organ of Bellonci.

The amphipod species Haploops tubicola has an unusual compound eye that is divided into three separate parts, each with one common cuticular lens. The dorso-frontal eyepair has, in addition to the lens, a so-called vitreous body, which is constructed like a dioptric lens and is inserted in the ray-path. The ‘vitreous body’ is actually — and for which evidence is presented — a secretory product for

Classification of amphipod compound eyes- the fine structure of the ommatidial units (Crustacea, Amphipoda)

The ultrastructure of the compound eyes of 13 amphipod species has been investigated. An amphipod type of compound eye can be characterized by the constellation and consistency of a number of morphological features, most of which are also found in other compound eyes. The amphipod eye falls into four sub-categories (types). The ampeliscid type has a tripartite aberrant lens eye; the lysianassid ty

The Dutch approach for assessing and reducing environmental impacts of building materials

Buildings are one of the largest consumers of energy and materials, and hence they are also one of the largest contributors to negative environmental impacts. Traditionally, energy consumed by buildings during their operation phase was the most significant in their lifecycles and far exceeded the embodied energy. However, in contemporary low-energy buildings, the embodied energy is proportionally

Change blindness in higher-order thought : Misrepresentation or good enough?

To evaluate the explanation of change blindness in terms of misrepresentation and determine its role for David Rosenthal’s higher-order thought theory of consciousness, we present an alternative account of change blindness that affords an independent outlook and provides a viable alternative. First we describe Rosenthal’s actualism and the notion of misrepresentation, then introduce change blindne

Labouring to Learn : Union Renewal in Swedish Manufacturing

As a response to post-Fordist production conditions, Swedish manufacturing unions have sought to develop their respective agendas beyond the traditional focus on distribution issues. A new emphasis on competence at the workplace suggests an increasing need for unions to develop a capacity to learn as organisations. The thesis accordingly sets out to further our theoretical knowledge of change in t

Polymorphisms in ATP-binding cassette transporters associated with maternal methylmercury disposition and infant neurodevelopment in mother-infant pairs in the Seychelles Child Development Study

Background: ATP-binding cassette (ABC) transporters have been associated with methylmercury (MeHg) toxicity in experimental animal models. Aims: To evaluate the association of single nucleotide polymorphisms (SNPs) in maternal ABC transporter genes with 1) maternal hair MeHg concentrations during pregnancy and 2) child neurodevelopmental outcomes. Materials and methods: Nutrition Cohort 2 (NC2) is

Denitrification and DNRA at the Baltic Sea oxic–anoxic interface : Substrate spectrum and kinetics

The dependence of denitrification and dissimilatory nitrate reduction to ammonium (DNRA) on different electron donors was tested in the nitrate-containing layer immediately below the oxic–anoxic interface (OAI) at three stations in the central anoxic basins of the Baltic Sea. Additionally, pathways and rates of fixed nitrogen transformation were investigated with 15N incubation techniques without

Optimal H-infinity state feedback for systems with symmetric and Hurwitz state matrix

We address H-infinity state feedback and give a simple form for an optimal control law applicable to linear time invariant systems with symmetric and Hurwitz state matrix. More specifically, the control law as well as the minimal value of the norm can be expressed in the matrices of the system's state space representation, given separate cost on state and control input. Thus, the control law is tr

Handbook of Research on Business Angels

This book synthesizes 30 years of research on business angels by charting the significant role they play in the financing of entrepreneurial businesses in both developed and emerging economies. The expert group of contributors examine business angels themselves, the evolution of the market and the role of public policy in influencing angel investment. Finally, the editors provide an agenda for fut

Characterization of a Listeria monocytogenes Ca(2+) pump : a SERCA-type ATPase with only one Ca(2+)-binding site

We have characterized a putative Ca(2+)-ATPase from the pathogenic bacterium Listeria monocytogenes with the locus tag lmo0841. The purified and detergent-solubilized protein, which we have named Listeria monocytogenes Ca(2+)-ATPase 1 (LMCA1), performs a Ca(2+)-dependent ATP hydrolysis and actively transports Ca(2+) after reconstitution in dioleoylphosphatidyl-choline vesicles. Despite a high sequ

Modifying Backoff Freezing Mechanism to Optimize Dense IEEE 802.11 Networks

From experience, it has been well known that the performance of IEEE 802.11 wireless local area networks significantly drops in dense settings, largely driven by poor capacity of the medium access control (MAC) layer. The current 802.11 MAC mechanism utilizes a contention window (CW) for random access, and the CW size is dictated to take discrete values from a bounded finite set. In this paper, wi

DAVID : An open-source platform for real-time transformation of infra-segmental emotional cues in running speech

We present an open-source software platform that transforms emotional cues expressed by speech signals using audio effects like pitch shifting, inflection, vibrato, and filtering. The emotional transformations can be applied to any audio file, but can also run in real time, using live input from a microphone, with less than 20-ms latency. We anticipate that this tool will be useful for the study o

Tau pathology distribution in Alzheimer's disease corresponds differentially to cognition-relevant functional brain networks

Neuropathological studies have shown that the typical neurofibrillary pathology of hyperphosphorylated tau protein in Alzheimer's disease (AD) preferentially affects specific brain regions whereas others remain relatively spared. It has been suggested that the distinct regional distribution profile of tau pathology in AD may be a consequence of the intrinsic network structure of the human brain. T

The relationship of optokinetic nystagmus to pursuit eye movements, vestibular nystagmus and to saccades in humans. A clinical study

The relationship of mean velocity of optokinetic nystagmus (OKN) to pursuit eye movements (PEM), to vestibular nystagmus and to voluntary saccades was analysed in 10 patients with peripheral vestibular lesions and in 30 patients with central vestibular lesions. PEM and vestibular nystagmus were significantly correlated to OKN, suggesting that a common neural pathway is used in the generation of th