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Brief Account (brief + account)
Selected AbstractsDerivatization of inorganic ions in capillary electrophoresisELECTROPHORESIS, Issue 12-13 2003Audrius PadarauskasArticle first published online: 8 JUL 200 Abstract This review gives a short overview of the main approaches to the derivatization of inorganic ions in capillary electrophoresis (CE) with emphasis on the most recent works. Various derivatization procedures and detection methods are discussed. A brief account of their advantages and limitations is given. More specific areas such as microchip CE, simultaneous separation of anions and cations, and speciation analysis are also briefly discussed. [source] Swedish eating disorder services,a brief modern historyEUROPEAN EATING DISORDERS REVIEW, Issue 3 2002Claes Norring Abstract This brief account of the history of eating disorder services in Sweden is divided into two sections, one covering the history and present design of clinical eating disorder services, and the other depicting the scientific development of the eating disorders field. Copyright © 2002 John Wiley & Sons, Ltd and Eating Disorders Association. [source] Synthesis of Inorganic NanotubesADVANCED MATERIALS, Issue 42 2009C. N. R. Rao Abstract Nanotubes constitute an exciting class of one-dimensional nanomaterials of which carbon nanotubes are recognized widely as materials of importance. The possibility of having inorganic nanotubes was recognized early in the 1990s, accompanied by the report of nanotubes of MoS2 and WS2. Since then, nanotubes of several inorganic materials have been prepared and characterized. While nanotubes of metal chalcogenides and oxides form a high proportion of the inorganic nanotubes investigated hither to, nanotubes of many other materials have also been prepared and characterized. Several synthetic strategies including both physical and chemical methods have been employed, of which the use of templates, precursors, and hydro- or solvothermal methods are prominent. In this article, we shall present a brief account of the present status of the synthesis of nanotubes of elemental materials as well as binary and complex metal oxides, chalcogenides, pnictides and carbides. [source] Oxidative processes of desulfurization of liquid fuelsJOURNAL OF CHEMICAL TECHNOLOGY & BIOTECHNOLOGY, Issue 7 2010J.M. Campos-Martin Abstract Environmental concerns have introduced a need to remove sulfur-containing compounds from light oil. As oxidative desulfurization is conducted under very mild reaction conditions, much attention has recently been devoted to this process. In this contribution, the developments in selective removal of organosulfur compounds present in liquid fuels via oxidative desulfurization, including both chemical oxidation and biodesulfurization, are reviewed. At the end of each section, a brief account of the research directions needed in this field is also included. Copyright © 2010 Society of Chemical Industry [source] Design of Statically Stable Walking Robot: A ReviewJOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 11 2003D. C. Kar The superior mobility characteristics of legged animals compared to those of wheeled or tracked vehicles for off-road locomotion motivated the development of artificial walking machines. The sustained worldwide efforts for the last few decades resulted in a large number of legged robots with different levels of sophistication. Here, various design approaches made so far to realize artificial legged locomotion are discussed. Mainly, different vehicle configurations as well as leg mechanisms which are already explored by researchers are reviewed in brief. The author hopes that this will serve as a brief account of previous research efforts and help future walking robot designers to develop more sophisticated machines. © 2003 Wiley Periodicals, Inc. [source] Working memory and Down syndromeJOURNAL OF INTELLECTUAL DISABILITY RESEARCH, Issue 12 2007A. Baddeley Abstract A brief account is given of the evolution of the concept of working memory from a unitary store into a multicomponent system. Four components are distinguished, the phonological loop which is responsible for maintaining speech-based information, the visuospatial sketchpad performing a similar function for visual information, the central executive which acts as an attentional control system, and finally a new component, the episodic buffer. The buffer comprises a temporary multidimensional store which is assumed to form an interface between the various subsystems of working memory, long-term memory, and perception. The operation of the model is then illustrated through an account of a research programme concerned with the analysis of working memory in Down syndrome. [source] Radiological manifestations of malignant pleural mesotheliomaJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 2 2003Virginia WK Au Summary Malignant pleural mesothelioma has had a rising incidence in Australia over the past 40 years. This pictorial essay gives a brief account of the condition, summarizes the various radiological manifestations and aims at increasing the awareness of a disease that is expected to reach its peak incidence in the early decades of the twenty-first century. [source] Intra-articular depot formulation principles: Role in the management of postoperative pain and arthritic disordersJOURNAL OF PHARMACEUTICAL SCIENCES, Issue 11 2008Claus Larsen Abstract The joint cavity constitutes a discrete anatomical compartment that allows for local drug action after intra-articular injection. Drug delivery systems providing local prolonged drug action are warranted in the management of postoperative pain and not least arthritic disorders such as osteoarthritis. The present review surveys various themes related to the accomplishment of the correct timing of the events leading to optimal drug action in the joint space over a desired time period. This includes a brief account on (patho)physiological conditions and novel potential drug targets (and their location within the synovial space). Particular emphasis is paid to (i) the potential feasibility of various depot formulation principles for the intra-articular route of administration including their manufacture, drug release characteristics and in vivo fate, and (ii) how release, mass transfer and equilibrium processes may affect the intra-articular residence time and concentration of the active species at the ultimate receptor site. © 2008 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 97:4622,4654, 2008 [source] 31P NMR spectroscopy in the quality control and authentication of extra-virgin olive oil: A review of recent progressMAGNETIC RESONANCE IN CHEMISTRY, Issue 5 2007Photis Dais Abstract This review is a brief account on the application of a novel methodology to the quality control and authentication of extra-virgin olive oil. This methodology is based on the derivatization of the labile hydrogens of functional groups, such as hydroxyl and carboxyl groups, of olive oil constituents with the phosphorus reagent 2-chloro-4,4,5,5-tetramethyldioxaphospholane, and the use of the 31P chemical shifts to identify the phosphitylated compounds. Various experimental aspects such as pertinent instrumentation, sample preparation, acquisition parameters and properties of the phosphorus reagent are reviewed. The strategy to assign the 31P signals of the phosphitylated model compounds and olive oil constituents by employing 1D and 2D NMR experiments is presented. Finally, the capability of this technique to assess the quality and the genuineness of extra-virgin olive oil and to detect fraud is discussed. Copyright © 2007 John Wiley & Sons, Ltd. [source] Antitubercular potential of plants: A brief account of some important moleculesMEDICINAL RESEARCH REVIEWS, Issue 4 2010Arvind S. Negi Abstract Mycobacterium tuberculosis is the most lethal pathogen causing tuberculosis in human. After the discovery of antitubercular drugs pyrazinamide, rifampicin, isoniazid, streptomycin, and ethambutol (PRISE), the disease was controlled for a limited period. However, over the course of their usage, the pathogen acquired resistance and evolved into multi-drug resistant, single-drug resistant, and extensive drug resistant forms. A good number of plant secondary metabolites are reported to have antitubercular activity comparable to the existing antitubercular drugs or sometimes even better in potency. A well-defined strategy is required to exploit these phytomolecules as antitubercular drugs. This review gives concise up-to-date information regarding the chemistry and pharmacology of plant-based leads and some insight into their structure,activity relationship. © 2009 Wiley Periodicals, Inc. Med Res Rev, 30, No. 4, 603,645, 2010 [source] 60 years of IUCr journalsACTA CRYSTALLOGRAPHICA SECTION A, Issue 3 2009André Authier In the 60 years since its birth in 1948, the number of journals published by the International Union of Crystallography has risen from one to eight. A brief account of the history of the forerunner of the IUCr journals, Zeitschrift für Kristallographie, is given. The context of the birth of the IUCr and the first of its journals, Acta Crystallographica, is recalled. The circumstances which led to the growth of Acta into several sections, at first A and B then, successively, C, D, E and F, and the launch of two new journals, the Journal of Applied Crystallography and the Journal of Synchrotron Radiation, are described. The transition from print-on-paper to electronic journals is also remembered. [source] Asset Bubbles, Leverage and ,Lifeboats': Elements of the East Asian CrisisTHE ECONOMIC JOURNAL, Issue 460 2000H. J. Edison Collapsing credit markets have been blamed for the depth and persistence of the Great Depression in the United States. Could similar mechanisms have played a role in ending the East Asian economic miracle , and in creating fragility in global financial markets? After a brief account of the nature of the East Asian crises of 1997/8, we use the framework of highly-leveraged, fully-collaterised firms due to Kiyotaki and Moore (1997) to explore the impact of a credit crunch. The paper emphasises the fragility of equilibrium and how rapidly boom can turn to bust. [source] HOMOSEXUALITY OR HOMOEROTICISM?: ,NARCISSISTIC EROTICISM'THE INTERNATIONAL JOURNAL OF PSYCHOANALYSIS, Issue 2 2002Jean Bergeret It may be dangerous for a psychoanalyst to let him/herself be influenced by the social and media pressure that proposes the use of the term ,homosexual' to describe the affective functioning of a homophile, for this assumes,from the outset,that it is of a truly sexual nature. However, following certain Freudian writings and the works of Férenczi in 1911, we know the different mechanisms of the narcissistic register that come into play in the quite particular relational behaviour that should more relevantly be called ,homoeroticism'. On the other hand, our diagnostic and therapeutic approach will benefit from not considering, at the outset, all the economically and psychogenetically very different varieties of homoeroticism, male or female, latent or manifest, in too global a fashion, with reference also to the Freudian concept of psychic bisexuality. The French psychoanalytical research team working with the author has focused on these important issues for a number of years now. This article aims to give a fairly brief account of its work, with the objective of opening up a discussion amongst psychoanalysts, within the framework of Freudian thought. [source] Retinopathy of prematurity in a Copenhagen high-risk sample 1997,98ACTA OPHTHALMOLOGICA, Issue 3 2000The allover surveillance for ROP appears more, more complete ABSTRACT. Purpose: From two recent materials to describe the present clinical status regarding retinopathy of prematurity in Denmark, and to outline trends over time. Methods: A) Results of regular ophthalmic surveillance of 201 clinically selected (higher risk of ROP than average) pre-term infants of birth year 1997,98 taken care of in the two greater Copenhagen tertiary neonatal units, in an intended prospective design. Gestational age range was 24,32 weeks at delivery; birth weights 490,2200 g. Median values 28 weeks and 1090 g. B) A brief account of the latest ROP-associated registrations of visual impairment in Danish children aged 0,17 years (n=138). Results: A) ROP was observed in 31.3% (n=201). Retinal cryotherapy was given to eleven ,own' cases and to two from elsewhere (n=13, gestational age at delivery 25,31 weeks). Five had cryotherapy twice. Four of the 13 were later registered for visual impairment. B) Comparing the first and the latest third of the registrations, visual impairment has dropped in frequency and severity over the period from 1981 till now. Conclusions: Compared to previous data the present clinical profile of ROP in Denmark indicates a relatively lower overall frequency of ROP and a decrease in eventual severe visual impairment. Undoubtedly, the continued refinement of neonatal care has been of relevance, but the definite decline in visual impairment further reflects a more complete ophthalmic surveillance, on a national basis. The advanced cases are generally detected in time and retinal ablation therapy offered. [source] | ||||||||||||||||