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Terms modified by Richer Selected AbstractsPaul Blocq and (psychogenic) astasia abasiaMOVEMENT DISORDERS, Issue 10 2007Michael S. Okun MD Abstract The Greek term astasia,abasia literally translates to mean inability to stand and to walk. Although today we would classify the syndrome as a conversion disorder, it was considered a separate disease by Paul Blocq (1860,1896), who described this phenomenon as the inability to maintain an upright posture, despite normal function of the legs in the bed. Paul Blocq's original 1888 articles on astasia abasia were read, partly translated from French to English, and the cases were summarized. A review of a selection of the literature following Blocq's description on astasia abasia was performed. Present day literature was consulted as well. Blocq reviewed what was known about astasia abasia in two papers. Although he was the first to use the combined term astasia abasia, he referred to similar descriptions of Charcot, Richer, Mitchell, Jaccoud, Roméi, and Erlenmeyer. Blocq's contribution was in compiling the experiences and observations of preeminent 19th century neurologists. He recognized that paralysis, jumping, fits, tremor, and bizarre behavior could all be associated with the syndrome. He distinguished the disorder from hysteria. Moreover, he presented a formal delineation of the gait disorder and provided a pathophysiologic concept. Prognosis was considered favorable. Paul Blocq directed attention to psychogenic gait disorders by publishing a small case series on astasia abasia. Today, these case descriptions would be likely considered cases of conversion or psychogenic gait disorder, with or without other conversion/psychogenic movement disorders. © 2007 Movement Disorder Society [source] Feeling Richer or Poorer than Others: A Cross-section and Panel Analysis of Subjective Economic Status in Indonesia,ASIAN ECONOMIC JOURNAL, Issue 2 2007Nattavudh Powdthavee O53; I3 This paper examines what makes us feel richer or poorer than others. It investigates cross-sectional and longitudinal determinants of individuals' subjective economic status in Indonesia. Using two waves of Indonesian Family Life Surveys, 1997 and 2000, I show that individuals' perceptions of where they are on the economic scale are more dependent on a number of socioeconomic characteristics, as well as their attitudes towards their future economic status, than their current spending capacities would suggest. I also find significant, albeit weaker, expenditure and income effects on individuals' subjective economic status once individual fixed effects are controlled for in the regression. [source] Creating Value Through Corporate GovernanceCORPORATE GOVERNANCE, Issue 3 2002Robert A.G. Monks Value and governance are such familiar words that we do not often enough reflect on their meanings in a specific situation. This paper will suggest: Value is in the eye of the beholder. The appearance of governance may be preferable to the real thing. In order better to understand value, we will work with a simple question , is it appropriate for a global investor to purchase common shares in Volkswagen? There are many kinds of shareholder, each with distinctive interests that are not always compatible with the interests of the other investors. A global investor is typically the trustee of a pension plan with the simple obligation to collateralise the pension promise by maximising the long,term value of trust assets. The beneficiaries of pension funds are not rich people. Fluctuations in market values are no longer primarily a question as to whether rich people are a bit richer or poorer, they are a question as to whether pensions will be paid to the roughly half of the population of the OECD world who have interests in employee benefit plans. This makes investment a matter of social and political concern. At the end of our trip through the mythology and prospects for adding value to corporate enterprises through effective governance, we come to a very simple conclusion. I bastardise a celebrated principal of physics to conclude that both in science and in business a watched particle behaves differently than one that is not watched. "An observed board behaves differently" and is more likely to generate value for corporate owners. [source] Rereading the Dominant Narrative of MentoringCURRICULUM INQUIRY, Issue 4 2000Alexandra Semeniuk Mentoring is currently being promoted as an effective means of easing new teachers' transition from preservice programs to the profession.. At the same time it is seen as a way of providing teacher development for those teachers with more experience. Furthermore researchers promote mentoring as a force for change to diminish isolation and promote teacher collaboration. In this article I present an overview,the dominant narrative,of some recent research on formalized mentoring programs in education. Bringing this material together reveals that researchers are virtually unanimous in their enthusiasm for these initiatives. A dialogue which took place between me and a colleague/friend about what we construed as our mentoring relationshippotentially serves as a counternarrative to this prevalent story. Through an analysis of the educational research and the personal narrative, I suggest that the widely accepted view of mentoring may need to be reread, particularly in relation to language: mentoring's meaning is now imprecise because it is used as an umbrella term for many kinds of affiliations in teaching. Inrereading our narrative I argue that my colleague/friend and I did not act as each other's mentor. Rather, our professional association became entwined with the friendship we developed over time. I maintain that by doing a similar rereading of the research on mentoring in education we might find richer and more precise language to describe how we as teachers can assist one another in becoming sophisticated professionals. [source] The rich generally get richer, but there are exceptions: Correlations between species richness of native plant species and alien weeds in MexicoDIVERSITY AND DISTRIBUTIONS, Issue 5-6 2004Francisco J. Espinosa-García ABSTRACT Studies on the resistance of communities to plant invasions at different spatial scales have yielded contradictory results that have been attributed to scale-dependent factors. Some of these studies argue either for or against Elton's notion of biotic resistance against invasions through diversity. We studied the correlation between alien weeds and native species, dividing the latter group into weedy and non-weedy species, integrating various factors that influence diversity into an analysis on the scale of the federal states of Mexico. The resulting multiple-regression models for native and alien weed species are robust (adjusted R2 = 0.87 and R2 = 0.69, respectively) and show a strong partial correlation of the number of weed species (native and alien) with the number of non-weed native species. These results agree with studies showing a positive correlation between the number of native and alien species on larger scales. Both models also include human population density as an important predictor variable, but this is more important for alien weeds (, = 0.62) than for native weeds (, = 0.32). In the regression model for native weed species richness, the non-cultivated (fallow) area (, = 0.24) correlated positively with native weed richness. In the model for alien weed species richness, the native weed species richness was an important variable (, = ,0.51), showing a negative partial correlation (rpart = ,0.4). This result is consistent with Elton's biotic resistance hypothesis, suggesting that biotic resistance is scale independent but that this may be masked by other factors that influence the diversity of both weeds and non-weeds. [source] Heterogeneity, speciation/extinction history and climate: explaining regional plant diversity patterns in the Cape Floristic RegionDIVERSITY AND DISTRIBUTIONS, Issue 3 2002R. M. Cowling Abstract. This paper investigates the role of heterogeneity and speciation/extinction history in explaining variation in regional scale (c. 0.1,3000 km2) plant diversity in the Cape Floristic Region of south-western Africa, a species- and endemic-rich biogeographical region. We used species-area analysis and analysis of covariance to investigate geographical (east vs. west) and topographic (lowland vs. montane) patterns of diversity. We used community diversity as a surrogate for biological heterogeneity, and the diversity of naturally rare species in quarter degree squares as an indicator of differences in speciation/extinction histories across the study region. We then used standard statistical methods to analyse geographical and topographic patterns of these two measures. There was a clear geographical diversity pattern (richer in the west), while a topographic pattern (richer in mountains) was evident only in the west. The geographical boundary coincided with a transition from the reliable winter-rainfall zone (west) to the less reliable non-seasonal rainfall zone (east). Community diversity, or biological heterogeneity, showed no significant variation in relation to geography and topography. Diversity patterns of rare species mirrored the diversity pattern for all species. We hypothesize that regional diversity patterns are the product of different speciation and extinction histories, leading to different steady-state diversities. Greater Pleistocene climatic stability in the west would have resulted in higher rates of speciation and lower rates of extinction than in the east, where for the most, Pleistocene climates would not have favoured Cape lineages. A more parsimonious hypothesis is that the more predictable seasonal rainfall of the west would have favoured non-sprouting plants and that this, in turn, resulted in higher speciation and lower extinction rates. Both hypotheses are consistent with the higher incidence of rare species in the west, and higher levels of beta and gamma diversity there, associated with the turnover of species along environmental and geographical gradients, respectively. These rare species do not contribute to community patterns; hence, biological heterogeneity is uniform across the region. The weak topography pattern of diversity in the west arises from higher speciation rates and lower extinction rates in the topographically complex mountains, rather than from the influence of environmental heterogeneity on diversity. [source] Structural Study of Novel Graphite,Lithium,Calcium Intercalation CompoundsEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 8 2004Sébastien Pruvost Abstract Three new layered compounds were synthesised by immersing a pyrographite platelet in a molten Ca,Li alloy creating a new graphite intercalation compound family. The samples were studied by X-ray and neutron diffraction, revealing that the intercalated sheets are polylayered. The study of the 00l reflections allowed us to establish the c -axis stacking of these three phases. The ,-phase exhibits a five-layered intercalated sheet which has something in common with a Li,Ca,Li,Ca,Li slice cut in the CaLi2 structure (ThMn2 Laves phase type). The ,-phase, which is richer in metallic elements and with a greater repeat distance, possesses seven-layered intercalated sheets due to the splitting of the middle lithium plane in three. The third phase is a pseudo-binary compound, containing monolayered sheets and with a formula close to CaC6. Electron microdiffraction allowed us to determine the 2D unit cell for each compound, all of which were commensurate with that of graphite. Charge transfer from the intercalate to the host lattice was evaluated for the three phases from hk0 data, leading to high values. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) [source] Primary particle size distribution of eroded material affected by degree of aggregate slaking and seal developmentEUROPEAN JOURNAL OF SOIL SCIENCE, Issue 1 2009D. N. Warrington Summary Primary particle size distribution (PSD) of eroded sediment can be used to estimate potential nutrient losses from soil and pollution hazards to the environment. We studied eroded sediment PSDs from three saturated soils, packed in trays (20 × 40 × 4 cm), that had undergone either minimal aggregate slaking (MAS) or severe aggregate slaking (SAS) prior to a 60 mm simulated rainstorm (kinetic energy, 15.9 kJ m,3; droplet diameter, 2.97 mm) and collected runoff at regular intervals. The degree of aggregate slaking was controlled by the rate at which soils were wetted to saturation. The PSDs of eroded materials and of parent soils were determined using a laser particle size analyser. For each soil, PSD frequency curves of eroded sediments and parent soils were generally of a similar shape but most eroded sediments had larger clay contents than their parent soils. In the SAS treatment, cumulative clay enrichment in the eroded materials was inversely related to the parent soil clay content, these being 28.5, 26.6 and 22.8% richer in clay than their parent soils for the loam, sandy clay and clay, respectively. Generally, total clay loss was greater from soils with SAS than from those with MAS because of erosion rates; however, clay enrichment of sediments, compared with parent soil clay contents, was mostly greater in samples with MAS. Greater clay enrichment took place during the early seal development stage in the loam, but could not readily be associated with specific stages of seal development for the clay. In the sandy clay, the relation between seal development and clay enrichment in the eroded material depended on the initial degree of aggregate slaking. The observed large preferential loss of clay by erosion in cultivated soils re-emphasizes the need to employ erosion control measures. [source] Volatile constituents of Dorema aucheri Boiss., Seseli libanotis (L.) W. D. Koch var. armeniacum Bordz. and Conium maculatum L. three Umbelliferae herbs growing wild in IranFLAVOUR AND FRAGRANCE JOURNAL, Issue 5 2006Shiva Masoudi Abstract The composition of the essential oils from three Umbelliferae species of Iran,Dorema aucheri Boiss., which is endemic to Iran, Seseli libanotis (L.) W. D. Koch var. armeniacum Bordz. and Conium maculatum L.,obtained by hydrodistillation were analyzed by GC and GC[sol ]MS. , -Eudesmol (31.2%) and , -cadinene (10.9%) were the main components among the 35 constituents characterized in Dorema aucheri, representing 89.2% of the total components detected. Twenty-five compound were identified in the oil of Seseli libanotis, repesenting 90.6% of the total oil with acorenone (35.5%) as the major constituents. The oil of Conium maculatum was characterized by higher amount of germacrene D (46.1%), , -caryophyllene (15.3%) and (E,E)- , -farnesene (10.1%) among the 17 components comprising 91.0% of the total oil detected. All oils were richer in sesquiterpenes than monoterpenes. Copyright © 2006 John Wiley & Sons, Ltd. [source] Volatile constituents of Achillea pachycephala, A. oxyodonta and A. biebersteinii from IranFLAVOUR AND FRAGRANCE JOURNAL, Issue 2 2006Akbar Esmaeili Abstract The water-distilled essential oils from aerial parts of Achillea pachycephala Rech.f. and Achillea oxyodonta Boiss., which are endemic to Iran, and stems, leaves and flowers of Achillea biebersteinii Afan., were analysed by GC and GC,MS. The oil of A. pachycephala was found to contain 1,8-cineole (27.7%) and camphor (27.4%) as the major constituents. The oil of A. oxyodonta was characterized by higher amounts of 1,8-cineole (38.5%) and artemisia ketone (23.0%). The oils obtained from stems and leaves of A. biebersteinii were rich in camphor (38.1% and 33.7%, respectively) and borneol (22.6% and 20.8%, respectively). The other main component of the stem oil was 1,8-cineole (13.5%). In the flower oil of the plant, camphor (36.3%) and 1,8-cineole (22.3%) were the predominant compounds. All oils were richer in oxygenated monoterpenes. Copyright © 2005 John Wiley & Sons, Ltd. [source] The paucity of multimethod research: a review of the information systems literatureINFORMATION SYSTEMS JOURNAL, Issue 3 2003John Mingers Abstract. ,It has commonly been argued that the use of different research methods within the information system (IS) discipline and within individual pieces of research will produce richer and more reliable results. This paper reports on a survey of the IS literature to discover the extent of multimethod research. The findings are that such work is relatively scarce, and where it occurs involves only a small set of traditional methods. Possible reasons for this are discussed. [source] Structure,Property Relation of SrTiO3/LaAlO3 InterfacesADVANCED MATERIALS, Issue 17 2009Mark Huijben Abstract A large variety of transport properties have been observed at the interface between the insulating oxides SrTiO3 and LaAlO3 such as insulation, 2D interface metallicity, 3D bulk metallicity, magnetic scattering, and superconductivity. The relation between the structure and the properties of the SrTiO3/LaAlO3 interface can be explained in a meaningful way by taking into account the relative contribution of three structural aspects: oxygen vacancies, structural deformations (including cation disorder), and electronic interface reconstruction. The emerging phase diagram is much richer than for related bulk oxides due to the occurrence of interface electronic reconstruction. The observation of this interface phenomenon is a display of recent advances in thin film deposition and characterization techniques, and provides an extension to the range of exceptional electronic properties of complex oxides. [source] Factors Affecting Macroinvertebrate Richness and Diversity in Portuguese Streams: a Two-Scale AnalysisINTERNATIONAL REVIEW OF HYDROBIOLOGY, Issue 2 2004Manuel A. S. Graça Abstract We analysed the spatial patterns in macroinvertebrate taxon richness and abundance at two scales: sampling unit and basin. We sampled 12 stream sites in three zones of Portugal, differing in climate geomorphology and water chemistry. At a sampling unit scale, substratum organic matter content, depth and the dominant size of substratum particles were correlated with numbers of taxa and individuals. We propose that the number of taxa at a small scale depends on the number of individuals, which in turn is the result of organic matter accumulation, hydrologic and substratum characteristics. The environmental parameters better explaining the large-scale biological data were temperature, minimum size of substratum particles and pH. Regardless of the relative importance of variable types and mechanisms regulating stream invertebrates along the climatic gradient, rivers from the North and Centre appeared to be richer in taxa than the typically Mediterranean streams in the South. [source] Particle Size Distribution (Texture) of Eroded Soil MaterialJOURNAL OF AGRONOMY AND CROP SCIENCE, Issue 5 2002F. Basic Abstract The total quantity of erosional drift on a Stagnic Luvisol on which six tillage methods were used was measured over 5 years of investigation. The texture of the tilled soil and the erosional drift for each trial method was recorded in the same plots. The results obtained suggested that erosional drift was generally richer in silt and clay particles. The standard deviations of coarse sand indicated that approximately the same quantity of coarse sand was found in plot soil and in erosional drift for all tillage methods. Sometimes more and sometimes fewer fine sand particles were found in erosional drift than in plot soil. In most cases, more silt particles were found in erosional drift than in plot soil. The standard deviation and coefficient of variation for clay and silt were higher in erosional drift than in plot soil for all methods. The highest content of clay particles was recorded in erosional drift from the no-tillage treatment in all investigation years. The results suggest that the correct choice of tillage method (no-tillage and ploughing across the slope) on a Stagnic Luvisol can protect the soil on a slope. [source] Patterns of species richness on very small islands: the plants of the Aegean archipelagoJOURNAL OF BIOGEOGRAPHY, Issue 7 2006Maria Panitsa Abstract Aim, To investigate the species,area relationship (SAR) of plants on very small islands, to examine the effect of other factors on species richness, and to check for a possible Small Island Effect (SIE). Location, The study used data on the floral composition of 86 very small islands (all < 0.050 km2) of the Aegean archipelago (Greece). Methods, We used standard techniques for linear and nonlinear regression in order to check several models of the SAR, and stepwise multiple regression to check for the effects of factors other than area on species richness (,habitat diversity', elevation, and distance from nearest large island), as well as the performance of the Choros model. We also checked for the SAR of certain taxonomic and ecological plant groups that are of special importance in eastern Mediterranean islands, such as halophytes, therophytes, Leguminosae and Gramineae. We used one-way anova to check for differences in richness between grazed and non-grazed islands, and we explored possible effects of nesting seabirds on the islands' flora. Results, Area explained a small percentage of total species richness variance in all cases. The linearized power model of the SAR provided the best fit for the total species list and several subgroups of species, while the semi-log model provided better fits for grazed islands, grasses and therophytes. None of the nonlinear models explained more variance. The slope of the SAR was very high, mainly due to the contribution of non-grazed islands. No significant SIE could be detected. The Choros model explained more variance than all SARs, although a large amount of variance of species richness still remained unexplained. Elevation was found to be the only important factor, other than area, to influence species richness. Habitat diversity did not seem important, although there were serious methodological problems in properly defining it, especially for plants. Grazing was an important factor influencing the flora of small islands. Grazed islands were richer than non-grazed, but the response of their species richness to area was particularly low, indicating decreased floral heterogeneity among islands. We did not detect any important effects of the presence of nesting seabird colonies. Main conclusions, Species richness on small islands may behave idiosyncratically, but this does not always lead to a typical SIE. Plants of Aegean islets conform to the classical Arrhenius model of the SAR, a result mainly due to the contribution of non-grazed islands. At the same time, the factors examined explain a small portion of total variance in species richness, indicating the possible contribution of other, non-standard factors, or even of stochastic effects. The proper definition of habitat diversity as pertaining to the taxon examined in each case is a recurrent problem in such studies. Nevertheless, the combined effect of area and a proxy for environmental heterogeneity is once again superior to area alone in explaining species richness. [source] The influence of geographic and morphometric factors on the distribution of water bird species in small high altitude tropical man made reservoirs, Central Rift Valley, KenyaAFRICAN JOURNAL OF ECOLOGY, Issue 3 2010Francis Mwaura Abstract Variability in waterfowl characteristics among eight high altitude (2040,2640 m) small shallow (0.065,0.249 km2; 0.9,3.1 m) reservoirs in the escarpment zone along the central rift valley in Kenya between Naivasha and Nakuru towns were studied between 1998 and 2000. The aim of the study was to establish whether the geographic status of small reservoirs in terms of altitude and surface gradient can affect the characteristics of their birdlife in terms of bird counts and species numbers. The study also aimed at establishing whether reservoir bird counts and species number can be predicted by reservoir morphometric factors especially water depth, surface area, length of shoreline and area-shoreline ratio. The other aim was to determine the influence of local environment especially distance from the nearest natural lakes, and house density on the birdlife. The findings showed that geographic location of the reservoirs in terms of altitude and landscape had a strong influence on birdlife whereby reservoirs in higher altitude and flat plateau landscape were found to support higher bird species and counts. Larger and deeper reservoirs were richer in water bird species but small and shallow reservoirs were superior in terms of both bird species and counts. Reservoirs with more coarse, irregular and highly erratic shorelines had higher species number than those with smooth and well-rounded shorelines. The reservoir birdlife was found to be influenced by the number of farm houses near the waterbodies and also the distance from the nearby rift valley lakes. The results showed that both geographic and morphometric considerations are necessary in the establishment of new reservoirs especially for utilization in birdlife conservation and ecotourism. Résumé Entre 1998 et 2000, nous avons étudié la variabilité des caractéristiques de l'avifaune aquatique de huit petits réservoirs peu profonds (0,065,0,249 km²; 0,9,3,1 m) de haute altitude (2040,2640 m) dans la région de l'escarpement de la Rift Valley située entre Naivasha et Nakuru, au Kenya. L'objectif de cette étude était d'établir si le statut géographique de réservoirs petits en termes d'altitude et de gradient de surface peut affecter les caractéristiques de leur avifaune en ce qui concerne le nombre d'oiseaux et d'espèces. L'étude visait aussi àétablir si l'on peut prédire la densité des oiseaux et le nombre d'espèces d'après les facteurs morphométriques du réservoir, et en particulier la profondeur de l'eau, la superficie de la surface, la longueur des berges et le rapport entre la superficie et la longueur de berges. L'autre objectif était de déterminer plus spécialement l'influence de la distance par rapport aux lacs naturels les plus proches et celle de la densité des habitations sur l'avifaune. Les résultats ont montré que la situation géographique des réservoirs en termes d'altitude et de paysage avait une forte influence sur l'avifaune, en ceci que les réservoirs de plus haute altitude et situés dans un paysage de plateau régulier accueillaient un plus grand nombre d'espèces et une plus forte densité d'oiseaux. Les réservoirs plus étendus et plus profonds étaient plus riches en espèces d'oiseaux d'eau, et les réservoirs plus petits et moins profonds étaient supérieurs en termes de nombre d'espèces d'oiseaux et de densité. Les réservoirs dont les berges étaient accidentées, instables et irrégulières avaient un nombre d'espèces plus élevé que ceux dont les berges étaient bien délimitées et planes. On a découvert que l'avifaune d'un réservoir était influencée par le nombre d'exploitations agricoles situées près du plan d'eau et aussi par la distance qui le séparait des lacs les plus proches de la Rift Valley. Les résultats ont montré qu'il faut tenir compte des données géographiques et morphométriques pour établir de nouveaux réservoirs, spécialement s'ils sont destinés à la conservation de l'avifaune et au tourisme. [source] Mechanisms of pathogenesis and the evolution of parasite virulenceJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 2 2008S. A. FRANK Abstract When studying how much a parasite harms its host, evolutionary biologists turn to the evolutionary theory of virulence. That theory has been successful in predicting how parasite virulence evolves in response to changes in epidemiological conditions of parasite transmission or to perturbations induced by drug treatments. The evolutionary theory of virulence is, however, nearly silent about the expected differences in virulence between different species of parasite. Why, for example, is anthrax so virulent, whereas closely related bacterial species cause little harm? The evolutionary theory might address such comparisons by analysing differences in tradeoffs between parasite fitness components: transmission as a measure of parasite fecundity, clearance as a measure of parasite lifespan and virulence as another measure that delimits parasite survival within a host. However, even crude quantitative estimates of such tradeoffs remain beyond reach in all but the most controlled of experimental conditions. Here, we argue that the great recent advances in the molecular study of pathogenesis provide a way forward. In light of those mechanistic studies, we analyse the relative sensitivity of tradeoffs between components of parasite fitness. We argue that pathogenic mechanisms that manipulate host immunity or escape from host defences have particularly high sensitivity to parasite fitness and thus dominate as causes of parasite virulence. The high sensitivity of immunomodulation and immune escape arise because those mechanisms affect parasite survival within the host, the most sensitive of fitness components. In our view, relating the sensitivity of pathogenic mechanisms to fitness components will provide a way to build a much richer and more general theory of parasite virulence. [source] Fantasy proneness as a confounder of verbal lie detection toolsJOURNAL OF INVESTIGATIVE PSYCHOLOGY AND OFFENDER PROFILING, Issue 3 2010Karen Schelleman-Offermans Abstract This study investigated whether high fantasy-prone individuals have superior storytelling abilities. It also explored whether this trait is related to specific linguistic features (i.e. self-references, cognitive complexity, and emotional words). Participants high (n = 30) and low (n = 30) on a fantasy proneness scale were instructed to write down a true and a fabricated story about an aversive situation in which they had been the victim. Stories were then examined using two verbal lie detection approaches: criteria-based content analysis (CBCA) and linguistic inquiry and word count (LIWC). Irrespective of the truth status of the stories, independent observers rated stories of high fantasy-prone individuals as being richer in all nine CBCA elements than those of low fantasy-prone individuals. Furthermore, overall, high fantasy-prone people used more self-references in their stories compared with low fantasy-prone individuals. High fantasy prones' fabricated stories scored higher on various truth indices than authentic stories of low fantasy prones. Thus, high fantasy-prone people are good in creating a sense of authenticity, even when they fabricate stories. Forensic experts should bear this in mind when they employ verbal lie detection tools. Copyright © 2010 John Wiley & Sons, Ltd. [source] Magnetic resonance and computed tomographic evaluation of congenital heart diseaseJOURNAL OF MAGNETIC RESONANCE IMAGING, Issue 6 2004Lawrence M. Boxt MD Abstract Magnetic resonance imaging (MRI) and contrast-enhanced computed tomography (CT) provide noninvasive visualization of morphologic changes in pediatric and adult patients with congenital heart disease, as well as the functional changes caused by the underlying morphologic abnormalities. Clinical experience with MRI is richer than that with fast CT, but CT appears to provide accurate and high-quality imagery for diagnosis. The two modalities may be complementary. That is, intracardiac anatomy is so well depicted by MRI, and CT provides exquisite images of the great vessels. Furthermore, in adult patients, MR and CT are helpful in demonstrating and quantitating physiologic changes superimposed by acquired cardiovascular disease on the underlying congenital malformations. Using MRI, spin echo acquisitions provide the image data for evaluation of morphologic changes, and gradient reversal techniques add functional and flow data to complement morphologic changes. Contrast-enhanced electrocardiographic (ECG)-gated multidetector and electron beam CT examination provide morphologic information and may be used as a data set for off-line functional quantitation. J. Magn. Reson. Imaging 2004;19:827,847. © 2004 Wiley-Liss, Inc. [source] Marine macroalgae analyzed by mass spectrometry are rich sources of polyunsaturated fatty acids,JOURNAL OF MASS SPECTROMETRY (INCORP BIOLOGICAL MASS SPECTROMETRY), Issue 12 2005L. De Angelis Abstract Algae from cold water (Canada) and warm water (China) were analyzed for their total lipid content, and for their fatty acid (FA) composition and content. The major findings are that FA from Canadian algae are generally richer in polyunsaturated FA (PUFA), with a higher n-3/n-6 FA ratio, and a higher degree of total unsaturation. The 18 C, 4 double bonds FA (18 : 4 stearidonic acid, morotic acid as synonym) was detected in greater amounts in cold water samples. The high levels of total PUFA, and especially of n-3 FA in Canadian algae, suggests their possible utilizations for nutritional purposes. Copyright © 2005 John Wiley & Sons, Ltd. [source] The umbric epipedon in the N Apennines, Italy,an example from the Vallombrosa ForestJOURNAL OF PLANT NUTRITION AND SOIL SCIENCE, Issue 3 2005Guido Sanesi Abstract The umbric epipedon is a diagnostic surface horizon recognized by both the World Reference Base for Soil Resources and the U.S. Soil Taxonomy. It is mainly characterized by a dark color, a moderate to high content of OM, and a base saturation of less than 50%. In the N Apennines, Central Italy, forest soils over 600,700 m a.s.l. often have this epipedon. This paper stresses the morphological, chemical, and biological properties of the epipedon, specifically in the Vallombrosa Forest, where considerable work has been done in the last decade. Here, the umbric epipedon forms on sandstone, in high forests of Abies alba, Fagus sylvatica, and Castanea sativa. It does not have homogeneous properties throughout its thickness and often is divided into two distinct genetic horizons, A1 and A2. The A1 horizon is thinner, darker, and richer in OM, more base-saturated, and biologically more active than the underlying A2 horizon. The mean residence time of the bulk OM amounts to about a century in the A1 horizon, versus half a millennium in the A2. In both A1 and A2 horizons, the non-humic fraction prevails in the OM; this could account for the high susceptibility of the umbric epipedon to degrade when the forest is clear-cut or undergoes extensive uprooting due to windstorms or heavy snow loads. Significant discrepancies between the two A horizons have been found in regard to the microbial community. Umbric epipedons which developed under different tree species show minor differences, mainly concerning the microbial community. [source] For richer or for poorer: Marriage as an antipoverty strategyJOURNAL OF POLICY ANALYSIS AND MANAGEMENT, Issue 4 2002Adam Thomas This study examines the effects of changes in family structure on children's economic well-being. An initial shift-share analysis indicates that, had the proportion of children living in female-headed families remained constant since 1970, the 1998 child poverty rate would have been 4.4 percentage points lower than its actual 1998 level of 18.3 percent. The March 1999 Current Population Survey is then used to conduct a second analysis in which marriages are simulated between single mothers and demographically similar, unrelated males. The microsimulation analysis addresses some of the shortcomings of the shift-share approach by making it possible to account for the possibility of a shortage of marriageable men, to control for unobservable differences between married men and women and their unmarried counterparts, and to measure directly the effects of increases in marriage on the economic well-being of children. Results from the microsimulation analysis suggest that, had the proportion of children living in female-headed families remained constant since 1970, the child poverty rate would have been 3.4 percentage points lower than its actual 1998 level. Among children whose mother participated in a simulated marriage, the poverty rate would have fallen by almost two-thirds. © 2002 by the Association for Public Policy Analysis and Management. [source] Phosphorus L2,3 -edge XANES: overview of reference compoundsJOURNAL OF SYNCHROTRON RADIATION, Issue 2 2009Jens Kruse Synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy is becoming an increasingly used tool for the element speciation in complex samples. For phosphorus (P) almost all XANES measurements have been carried out at the K -edge. The small number of distinctive features at the P K -edge makes in some cases the identification of different P forms difficult or impossible. As indicated by a few previous studies, the P L2,3 -edge spectra were richer in spectral features than those of the P K -edge. However, experimentally consistent spectra of a wide range of reference compounds have not been published so far. In this study a library of spectral features is presented for a number of mineral P, organic P and P-bearing minerals for fingerprinting identification. Furthermore, the effect of radiation damage is shown for three compounds and measures are proposed to reduce it. The spectra library provided lays a basis for the identification of individual P forms in samples of unknown composition for a variety of scientific areas. [source] Storage affects the phenolic profiles and antioxidant activities of cherries (Prunus avium L) on human low-density lipoproteinsJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 9 2004Berta Gonçalves Abstract Four sweet cherry cultivars (cvs), Burlat, Saco, Summit and Van, were analysed at harvest and after storage at 2 and 15 °C for 30 and 6 days respectively. Phenolic profiles in methanolic extracts of freeze-dried samples of the fresh and differently stored cherries were quantified by high-performance liquid chromatography. Hydroxycinnamates dominated in all samples and represented 60,74% by weight of the phenols in the fresh and stored samples of the cvs Saco, Summit and Van, and 45% by weight of the phenols in the cv Burlat samples, which were richer in anthocyanins. The relative and total levels of hydroxycinnamates, anthocyanins, flavonols and flavan-3-ols varied among cultivars and during storage. Storage at 15 °C increased the phenol levels, particularly the cyanidin-3-rutinoside concentration. Cold storage induced decreased total phenol levels in the cvs Summit and Van but increased total phenol levels in the cvs Burlat and Saco. Phenolic cherry extracts inhibited low-density lipoprotein oxidation in vitro in a dose-dependent manner. Extracts of freshly harvested cherries exhibited significantly higher antioxidant activities than extracts of stored samples. The cv Summit samples had the highest antioxidant activity. Differences in the antioxidant effects of the cherry samples were positively correlated with their levels of p -coumaroylquinic acid (p < 0.1) but negatively correlated with their cyanidin-3-rutinoside levels (p < 0.05). Copyright © 2004 Society of Chemical Industry [source] Effects of disturbance intensity and frequency on early old-field successionJOURNAL OF VEGETATION SCIENCE, Issue 5 2001B. Collins Radford et al. (1968) Abstract. Early old-field succession provides a model system for examining vegetation response to disturbance frequency and intensity within a manageable time scale. Disturbance frequency and intensity can interact with colonization and competition to influence relative abundance of earlier and later successional species and determine, respectively, how often and how far succession can be reset. We tested the joint effects of disturbance frequency and intensity on vegetation response (species richness, abundance, canopy structure) during the first six years of succession by clipping the dominant species (D) or all species (T) in spring and fall of each year (S), once per year in summer (Y1), each two years in summer (Y2), or each four years in summer (Y4). Vegetation response reflected disturbance effects on expansion of a later monospecific dominant perennial herb, Solidago altissima, and persistence of the early, richer flora of annuals. A more abundant and taller top Solidago canopy developed on plots clipped each 2 yr or less frequently. Plots clipped yearly or seasonally were richer, but had less abundant, shorter, and differently stratified canopy. Disturbance mediated the relative abundance of early and later successional species; however, frequency and intensity effects were not completely congruent. Persistence of a richer early successional flora increased through the most frequent disturbance (S), and was magnified by disturbance intensity. Disturbance as extreme as clipping all vegetation twice yearly did not cause a drop in species richness, but maintained the early successional community over the first six years of succession. We conclude that clipping disturbance influenced the rate of succession, but the early community could rebound through the range of disturbance frequency and intensity tested. [source] A Social Proximity Explanation of the Reluctance to AssimilateKYKLOS INTERNATIONAL REVIEW OF SOCIAL SCIENCES, Issue 1 2007C. Simon Fan SUMMARY The pursuit of migration is an extreme example of the severing of ties with, or a distancing from, one's friends and home. The ,failure' of migrants to assimilate cannot plausibly be attributed merely to an urge to stay close to their friends, or they might not have migrated to begin with. Non-assimilation arises from a fear of enhanced relative deprivation if they reduce their distance from the natives as a reference group. Fundamentally, migration is a change of those with whom people associate. But it would be wrong to infer that a change of associates crowds out a change of behavior, given the associates. Through their actions, migrants can elect to associate more with some groups, less with others. However, when actions to keep in check the weight accorded to the rich natives as a reference group are not viable, the very choice of migration destination could be affected in an unexpected way: a country that is not so rich could be preferable to a country that is rich; migrants will protect themselves from an unfavorable comparison by not migrating to where the comparison, when unavoidable, would be highly unfavorable. Relatedly, the variance in the assimilation effort of migrants across host countries could arise from the variance in the income distance with the natives: the richer the natives, the weaker the effort to assimilate, other things held the same. [source] Selling Scientific Taxation: The Treasury Department's Campaign for Tax Reform in the 1920sLAW & SOCIAL INQUIRY, Issue 4 2004M. Susan Murnane The received interpretation of the Mellon tax reforms in the 1920s describes a reactionary roll-back of the first, progressive, permanent income tax system in United States history. This essay revises that interpretation in important ways. The Treasury Department of Secretary Andrew W. Mellon proposed and passed tax reform legislation in the 1920s that radically reduced marginal tax rates on wealthy individuals from World War 1 highs. The Mellon plan was developed by attorneys from the previous Democratic administration. Working with the foremost tax professionals of the day and deeply committed to the principles of progressive income taxation, they intended the establishment of a permanent peacetime tax system for a modern industrial society. They called their taxplan scientific taxation. The Treasury Department policymakers anticipated determined opposition to their program and consciously embarked on an extensive public relations campaign to convince the general public that reducing taxes on wealthy people was good for them because it made the whole society richer and more dynamic. This essay tells the story of how the Mellon plan took shape, and of the public relations campaign waged to secure its enactment. This essay also suggests that the Treasury Department's campaign to sell scientific tax reform to the general public generated a dialogue that facilitated popular acceptance of modern industrial capitalism. [source] "Maybe Tomorrow I'll Turn Capitalist": Cuentapropismo in a Workers' StateLAW & SOCIETY REVIEW, Issue 2 2007Emma F. Phillips In 1993, the Cuban government significantly expanded the scope of legal self-employment on the island. The change has not been uncontroversial, and cuentapropistas have frequently been held up, both in Cuba and in the United States, as the symbol of Cuba's transition to a free-market economy. In framing cuentapropistas as the vanguards of capitalism, observers have adopted a concept of "transition" which is both rigidly ideological and teleological. This article argues that by employing a sociolegal approach toward cuentapropismo,examining close-up not only the Cuban government's regulation of self-employment, but also how the operation of law is mediated through cuentapropistas' own self-perceptions,we can develop a richer and more complex understanding of transitional periods. Rather than conceptualizing "transition" as a straight line from communism to capitalism, a sociolegal analysis draws attention to the complex relationship between law, identity, and work in the renegotiation of citizenship, and the constitutive role that evolving conceptions of citizenship may have for the shape and character of a transitional period. [source] Nutrition in the genomics era: Cardiovascular disease risk and the Mediterranean dietMOLECULAR NUTRITION & FOOD RESEARCH (FORMERLY NAHRUNG/FOOD), Issue 10 2007Jose M. Ordovas Abstract The effect of dietary changes on phenotypes (i.e., plasma lipid measures, body weight and blood pressure) differs significantly between individuals. This phenomenon has been more extensively researched in relation to changes in dietary fat and plasma lipid concentrations for the prevention of cardiovascular disease (CVD) compared to other pathological conditions. Although common knowledge associates low fat diets with reductions in total and plasma LDL cholesterol, the clinical evidence shows dramatic inter-individual differences in response that are partially due to genetic factors. The discovery of the cardioprotective and other healthy properties of the Mediterranean diet has popularized the consumption of Mediterranean products such as olive oil. Molecular, clinical, and epidemiological studies have begun to shed some light about how various components of this diet may protect the cardiovascular system and to decrease the risk of other diseases such as cancer. However, it is also possible that the right combination of genetic, cultural, socioeconomic factors is needed to achieve full benefit. It has been proposed that the Mediterranean diet may be closer to the ancestral foods that were part of human development and our metabolism may have evolved to work optimally on such a diet rather than with the current diets richer in saturated fat and highly refined and processed foods. Therefore, it is possible that alleles that are associated with increase disease risk may be silenced in the presence of that more ancestral and traditional diet and lifestyle. This knowledge may provide the basis for successful public health as well individual approaches for disease prevention. [source] Major dry mergers in early-type brightest cluster galaxiesMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 4 2009F. S. Liu ABSTRACT We search for ongoing major dry mergers in a well-selected sample of local brightest cluster galaxies (BCGs) from the C4 cluster catalogue. 18 out of 515 early-type BCGs with redshift between 0.03 and 0.12 are found to be in major dry mergers, which are selected as pairs (or triples) with r -band magnitude difference ,mr < 1.5 and projected separation rp < 30 kpc, and showing signatures of interaction in the form of significant asymmetry in residual images. We find that the fraction of BCGs in major dry mergers increases with the richness of the clusters, consistent with the fact that richer clusters usually have more massive (or luminous) BCGs. We estimate that present-day early-type BCGs may have experienced on average ,0.6 (tmerge/0.3 Gyr),1 major dry mergers and through this process increases their luminosity (mass) by 15 per cent (tmerge/0.3 Gyr),1 (fmass/0.5) on average since z= 0.7, where tmerge is the merging time-scale and fmass is the mean mass fraction of companion galaxies added to the central ones. We also find that major dry mergers do not seem to elevate radio activities in BCGs. Our study shows that major dry mergers involving BCGs in clusters of galaxies are not rare in the local Universe, and they are an important channel for the formation and evolution of BCGs. [source] | ||||||||||||||||||||||||||||||||||||||||||||||||||||