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This critical review provides a processing-structure-property perspective on recent advances in cellulose nanoparticles and composites produced from them. It summarizes cellulose nanoparticles in terms of particle morphology, crystal structure, and properties. Also described are the self

. And as research environments, they are expected to address socially relevant problems and maintain high levels of academic quality. This critical review is situated in the debates about professionalism and professional identity in higher education and research. The author is responding to Trede et al

of the rehabilitation of this population. Methods: This article critically reviews the rehabilitation interventions available to older adults with hearing impairment: hearing aids, hearing assistance technology, and communication programs. Results: Current evidence suggests positive outcomes of similar magnitude

Dynamic memory allocation has been a fundamental part of most computer systems since roughly 1960, and memory allocation is widely considered to be either a solved problem or an insoluble one. In this survey, we describe a variety of memory allocator designs and point out issues relevant to their design and evaluation. We then chronologically survey most of the literature on allocators between 1961 and 1995. (Scores of papers are discussed, in varying detail, and over 150 references are given.) We argue that allocator designs have been unduly restricted by an emphasis on mechanism, rather than policy, while the latter is more important; higher-level strategic issues are still more important, but have not been given much attention. Most theoretical analyses and empirical allocator evaluations to date have relied on very strong assumptions of randomness and independence, but real program behavior exhibits important regularities that must be exploited if allocators are to perform well in practice.

The literature on interference in the Stroop Color-Word Task, covering over 50 years and some 400 studies, is organized and reviewed. In so doing, a set ofl 8 reliable empirical findings is isolated that must be captured by any successful theory of the Stroop effect. Existing theoretical positions

The rapid growth of research on organizational citizenship be-haviors (OCBs) has resulted in some conceptual confusion about the nature of the construct, and made it difficult for all but the most avid readers to keep up with developments in this domain. This paper critically examines

The economic well-being of older people in international perspective: a critical review

Metamaterials, artificial composite structures with exotic material properties, have emerged as a

ABSTRACT Selenoprotein P is a glycoprotein that has been purified from rat and human plasma. In selenium-replete rats it contains 65 % of the plasma selenium and its concentration is 25-30 mg protein/L. In selenium-deficient rats its concentration is <3 mg protein/L. The plasma half life of 75Se in Selenoprotein P is 3 to 4 h, indicating a rapid turnover. Purified rat Selenoprotein P contains 7.5 ±1 selenium atoms per molecule as selenocysteine. The sequence of the cloned cDNA predicts 10 selenocysteine residues, which suggests that the protein in plasma is a modification of the predicted one. Deduced amino acid sequence identitybetween rats and humans is 72%. The 3 ' untranslated region of Selenoprotein P cDNA contains two predicted stem loops of the type essential for selenocysteine in corporation. Northern analysis indicates that Seleno protein P is expressed by many tissues. Hepatic seleno-protein P mRNA level, but not its transcription, decreases during selenium deficiency. The decrease is less than the decrease of glutathione peroxidase mRNA, however. Selenoprotein P is postulated to serve as an extracellular oxidant defense because its presence corre lates with selenium protection of selenium-deficient rats against diquat-induced lipid peroxidation and liver necrosis. More research will be required to test this hypothesis and to establish the biochemical function of