bluuebunny/crossref_metadata_2025 huggingface dataset:
The Properties of Binary Mixtures of Ethoxylated Octyl Phenols with Ethoxylated Fluorinated Alkanols at the Water/Air Interface
Authors: Szymczyk Katarzyna
Published: February 2011

Surface tension measurements were carried out for systems containing binary mixtures of ethoxylated tert‐octylphenols (with an average of 10 or 16 ethylene oxide groups—HC8PEO10 and HC8PEO16, respectively) with perfluorinated n‐alcohol ethoxylates (fluoropentanol with an average of 10 ethylene oxide groups FC5EO10, and fluorohexanol with an average of 14 ethylene oxide groups FC6EO14). The obtained results and calculations indicate that fluorinated surfactants have the better efficiency and effectiveness in the reduction of surface tension of water that the hydrocarbonated alkyl phenol ethoxylates and that their mole fraction in the mixed monolayer at water–air interface for mixtures containing a 0.2 molar fraction of fluorinated surfactants in bulk phase is considerable higher than in the bulk phase. At concentrations of mixtures corresponding to saturated monolayer at water‐air interface there is a synergetic effect in the reduction of γLV for a mixture of HC8PEO16 + FC5EO10 at a 0.2 molar fraction of HC8PEO16; however, taking into account the lowest value of the molecular interaction parameter for mixed micelles calculated on the basis of Rosen approach, the result is that the best synergism takes place for mixture of HC8PEO16 + FC6EO14 at a 0.2 molar fraction of HC8PEO16. Moreover, the ability of the mixed monolayer formation relative to the mixed micelle formation varies with the concentration and composition of the studied mixtures.

Graphical Abstract

The comparison between values of the free energy at water‐air interface () and the standard Gibbs energy of micellization, , for aqueous solutions of hydrocarbon (HC8PEO10, HC8PEO16) and fluorinated (FC6EO14, FC5EO10) surfactants and their two binary mixtures.
Branched Chain Fatty Acid Content of United States Retail Cow's Milk and Implications for Dietary Intake
Authors: Ran‐Ressler R. R. , Sim D. , O’Donnell‐Megaro A. M. , Bauman D. E. , Barbano D. M. , Brenna J. T.
Published: February 2011

Branched chain fatty acids (BCFA) have recently been shown to be a major component of the normal human newborn gastrointestinal tract and have long been known to be a component of human milk. Ruminant food products are major sources of fat in the American diet, but there are no studies of milkfat BCFA content in retail milk. We report here the profile and concentrations of BCFA in a representative sampling of retail milk in the 48 contiguous United States (US), and their estimated intake in the American diet. Conventionally produced whole fluid milk samples were obtained from 56 processing plants across the contiguous 48 states. Retail milk samples contain exclusively iso‐ and anteiso‐BCFA with 14–18 carbons. BCFA were 2.05 ± 0.14%, w/w of milkfat fatty acids (mean ± SD), and anteiso‐BCFA comprised more than half this total. Based on these data and USDA food availability data, the average per capita BCFA intake of Americans is estimated to be about 220 mg/d from dairy; if current dietary recommendations were followed, BCFA intake would be about 400 mg/d. Adding intake from beef consumption, these estimates rise to approximately 400 and 575 mg/d, respectively. These results indicate that BCFA intake is a substantial fraction of daily fat intake, in amounts exceeding those of many bioactive fatty acids.
INTRODUCTION: PRINT CULTURES, NATIONALISMS AND PUBLICS OF THE INDIAN OCEAN
Authors: Hofmeyr Isabel , Kaarsholm Preben , Frederiksen Bodil Folke
Published: January 2011

The emergence of the Indian Ocean region as an important geo-political arena is being studied across a range of disciplines. Yet while the Indian Ocean has figured in Swahili studies and analyses of East and Southern African diasporic communities, it has remained outside the mainstream of African Studies. This introduction provides an overview of emerging trends in the rich field of Indian Ocean studies and draws out their implications for scholars of Africa. The focus of the articles is on one strand in the study of the Indian Ocean, namely the role of print and visual culture in constituting public spheres and nationalisms in, across and between the societies around the Ocean.

The themes addressed unfold between Southern and East Africa and India as well as along the African coast from KwaZulu-Natal through Zanzibar and Tanzania to the Arab world. This introduction surveys debates on print culture, newspapers and nationalism in African Studies and demonstrates how the articles in the volume support and extend these areas of study. It draws out the broader implications of these debates for the historiographies of East African studies, Southern African studies, debates on Indian nationalism and Islam.
EMPIRE, RACE AND THE INDIANS IN COLONIAL KENYA'S CONTESTED PUBLIC POLITICAL SPHERE, 1919–1923
Authors: Aiyar Sana
Published: January 2011

This article explores the connection between three political movements that broke out amongst Africans and Indians within the public political realm across the Indian Ocean – the Khilafat/non-cooperation movement initiated by Gandhi in India between 1919 and 1922, the ‘quest for equality’ with European settlers amongst Indians in Kenya from 1910 to 1923, and the anti-settler movement launched by Harry Thuku in protest against unfair labour ordinances between 1921 and 1922. Moving away from the racial and territorial boundaries of South Asian and Kenyan historiographies, it uses the Indian Ocean realm – a space of economic, social and political interaction – as its paradigm of analysis. A variety of primary sources from archives in Kenya, India and Britain have been studied to uncover a connected, interregional history of politics, race and empire. In an attempt to highlight the importance of the Indian Ocean realm in understanding the interracial and interregional concerns that shaped the political imaginary of Indians and Africans in Kenya, the article reveals the emergence of a shared public political space across the Indian Ocean that was deeply contested.
Breast-feeding and growth in children until the age of 3 years: the Generation R Study
Authors: Durmuş Büşra , van Rossem Lenie , Duijts Liesbeth , Arends Lidia R. , Raat Hein , Moll Henriëtte A. , Hofman Albert , Steegers Eric A. P. , Jaddoe Vincent W. V.
Published: January 2011

Breast-feeding has been suggested to be associated with lower risks of obesity in older children and adults. We assessed whether the duration and exclusiveness of breast-feeding are associated with early postnatal growth rates and the risks of overweight and obesity in preschool children. The present study was embedded in a population-based prospective cohort study from early fetal life onwards, among 5047 children and their mothers in The Netherlands. Compared with children who were breast-fed, those who were never breast-fed had a lower weight at birth (difference 134 (95 % CI − 190, − 77) g). No associations between breast-feeding duration and exclusivity with growth rates before the age of 3 months were observed. Shorter breast-feeding duration was associated with an increased gain in age- and sex-adjusted standard deviation scores for length, weight and BMI (P for trend < 0·05) between 3 and 6 months of age. Similar tendencies were observed for the associations of breast-feeding exclusivity with change in length, weight and BMI. Breast-feeding duration and exclusivity were not consistently associated with the risks of overweight and obesity at the ages of 1, 2 and 3 years. In conclusion, shorter breast-feeding duration and exclusivity during the first 6 months tended to be associated with increased growth rates for length, weight and BMI between the age of 3 and 6 months but not with the risks of overweight and obesity until the age of 3 years.
Dairy calcium intake modifies responsiveness of fat metabolism and blood lipids to a high-fat diet
Authors: Lorenzen Janne K. , Astrup Arne
Published: January 2011

Intervention studies have demonstrated that saturated fat increases total and LDL-cholesterol concentrations, and it is therefore recommended that the intake of high-fat dairy products be limited. However, observational studies have found an inverse relationship between the intake of dairy products and incidence of CVD. We aimed to study whether the Ca content of dairy products influences the effect of dairy fat on the lipid profile. The study had a randomised cross-over design. Subjects (n9) were randomised to one of the sequence of four isoenergetic 10 d diets: low Ca and low fat (LC/LF: approximately 700 mg Ca/d, 25 % of energy (fat); high Ca and LF (HC/LF: approximately 2800 mg Ca/d, 25 % of energy fat); LC and high fat (LC/HF: approximately 700 mg Ca/d, 49 E% fat); or HC and HF (approximately 2800 mg Ca/d, 49 E% fat). Blood variables were measured before and after each diet period, and faeces and urine were collected at the end of each diet period. A two-way ANOVA was used to examine the effect of Ca and fat intake. Independent of Ca intake, the HF diet increased the concentrations of total (9 %;P < 0·0001), LDL (14 %;P < 0·0001)- and HDL (13 %;P = 0·0002)-cholesterol compared with the LF diet. However, independent of fat intake, the HC diet decreased the concentrations of total (4 %;P = 0·0051) and LDL-cholesterol (10 %;P < 0·0001) but not HDL-cholesterol compared with the LC diet. In addition, total:HDL-cholesterol was decreased (5 %;P = 0·0299), and HDL:LDL was increased (12 %;P = 0·0097) by the HC diet compared with the LC diet. Faecal fat excretion was increased by both the HC (P < 0·0001) and HF (P = 0·0052) diets. In conclusion, we observed that dairy Ca seems to partly counteract the raising effect of dairy fat on total and LDL-cholesterol, without reducing HDL-cholesterol.
Strontium-, carbon- and oxygen-isotope compositions of marbles from the Cycladic blueschist belt, Greece
Authors: GÄRTNER CLAUDIA , BRÖCKER MICHAEL , STRAUSS HARALD , FARBER KATJA
Published: February 2011

The Cycladic blueschist belt, Greece, is mostly submerged below sea level and regional correlations are difficult to establish. Marbles are widespread within the belt and locally used as marker horizons to subdivide monotonous schist sequences. However, owing to the lack of distinctive petrographic characteristics, the marbles have not been used for island-to-island correlations. This study aims to investigate the potential of Sr-, C- and O-isotope compositions of marbles as a tool for unravelling the litho- and/or tectonostratigraphic relationships across the Cycladic islands, and as a proxy for the time of sediment formation. For this purpose, we have studied metamorphic carbonate rocks from the islands of Tinos, Andros, Syros, Sifnos and Naxos. Identical87Sr/86Sr values for certain marble horizons occurring on Tinos, Andros and Sifnos are interpreted to document coeval regional carbonate precipitation. The87Sr/86Sr values of the apparently least altered samples intersect the seawater curve multiple times within the most likely time interval of original carbonate precipitation (< 240 Ma; as indicated by previously published ion probe U–Pb zircon data) and thus an unequivocal age assignment is not possible. Very broad temporal correlations are possible, but more subtle distinctions are not feasible. On Andros, the overlapping Sr-isotope values of marbles representing the lowest and highest parts of the metamorphic succession are in accordance with a model suggesting isoclinal folding or thrusting of a single horizon, or very fast sedimentation. In contrast, distinct87Sr/86Sr values for samples from Tinos, representing different levels of the metamorphic succession, suggest that these rocks represent a temporal succession and not the tectonic repetition of a single horizon. Based on Sr-, O- and C-isotope characteristics alone the time equivalence of marbles occurring on different islands could not be documented unambiguously. However, by using various combinations of these parameters, some occurrences can be discriminated from the overall sample population. The new data further accentuate the general potential of coupled Sr-, C- and O-isotope characteristics for identification of archaeological provenance and complement existing datasets for Aegean marbles.
CULTURAL CHANGE IN PROVINCIAL SCOTTISH TOWNS, c. 1700–1820
Authors: HARRIS BOB
Published: January 2011

In the decades which immediately followed the union of 1707, most Scottish towns saw limited economic and cultural change. The middle of the eighteenth century, however, marked the beginnings of a new provincial urban dynamism in Scotland, which, from the 1780s or so onwards, was accompanied by far-reaching and rapid cultural change. This article seeks first to establish the scope, nature, and geography of this cultural transformation before discussing its wider historical significance, not only for our view of modern Scottish urbanization but in terms of patterns of urban change within the British Isles in the long eighteenth century. It is a story in part of convergence on Anglo-British cultural norms, but more saliently of the emergence of an increasingly British cultural synthesis, albeit one with distinctively Scottish elements. Another underlying purpose of the article is to re-direct views of Scottish urbanization away from Edinburgh, Glasgow, and Aberdeen and on to a group of towns which hitherto have barely featured in discussions of British urbanization in this period.
KINGSHIP AND COUNSEL IN EARLY MODERN ENGLAND
Authors: ROSE JACQUELINE
Published: January 2011

Counsel was central to negotiating the politics of Reformation monarchy in sixteenth- and seventeenth-century England. In a personal monarchy, particularly one wherein the monarch was supreme governor of the church, shaping the character of the ruler was vital for the smooth functioning of the political system. This article provides a conspectus of a broader project on early modern kingship and counsel which will discuss advice-giving provided by privy councillors, parliaments, preachers, and courtiers between 1509 and 1689. It shows how ecclesiastical counsel was central to defenders of the established church and in absolutist theorizing, and how men between 1558 and 1688 drew on patristic examples of its practice. Comparing ecclesiastical counsel to other genres of advice-giving also shows their common and distinctive features.
AFRICAN LOYALISM AND ITS DISCONTENTS: THE ROYAL TOUR OF SOUTH AFRICA, 1947
Authors: SAPIRE HILARY
Published: January 2011

This article explores the late flowering of ‘black loyalism’ during the visit of the British royal family to Southern Africa in the summer of 1947. Whereas most accounts of post-war African politics emphasize the radicalization of political organizations, the growth of nationalism, and grassroots insurgency, this account of African engagement with the royal tour indicates that professed faith in the British monarchy as the embodiment and guardian of the rights and liberties of all peoples living under the crown was more widespread and longer lived than is generally assumed. However evanescent the phenomenon, extensive participation in the ceremonial rituals associated with the tour and the outpouring of expressions of black loyalism underlines the fluidity and unpredictability of black politics in this decade. At such a highly charged moment internationally, with India on the cusp of independence, and political turmoil at home, there was reason to hope that the loyalty of Africans during the Second World War might just be rewarded by the extension of political rights. This article traces the complex legacies and contested expressions of ‘black loyalism’ in what was effectively its swansong.
NEHEMIAS (SCOTUS) AMERICANUS: ENLIGHTENMENT AND RELIGION BETWEEN SCOTLAND AND AMERICA
Authors: MAILER GIDEON
Published: January 2011

This review assesses scholarly attempts to synthesize various forms of Scottish philosophy in the context of eighteenth-century America. It suggests potential new directions for the study of Scottish Enlightenment ethical theories on the western side of the Atlantic, and then examines scholarship on a separate and neglected Scottish influence in American thought: an evangelical notion of religious authority that was not opposed to wider incorporation in multi-denominational political unions. The ideological basis for American independence owed much to a tense counterpoise between Scottish moral sense reasoning and Presbyterian evangelicalism, rather than to their singular and starkly binary contributions to colonial American ideology.
A Modern Tunisian Poet: Abȗ al-Qȃsim al-

Sh

ȃbbȋ (1909–1934)
Authors: Speight R. Marston
Published: January 2011

Abû al-Qâsim al-Shâbbî is one of the most attractive literary figures of twentieth- century North Africa, and probably the only Maghribi author of the modern period so far to attain the stature of greatness in the Arab world. His talent was first appreciated in Cairo in the thirties by the editors of Apollo magazine, and today literary men in all Arabic-speaking lands admire his verse.At the 1966 festival held in his memory in Tunis, critics and litterateurs from Algeria, Morocco, Jordan, Lebanon, Saudi Arabia, Sudan, Syria and Iraq read papers and recited poems expressing their appreciation of this treasured child of the Tunisian desert.
Dunes and alternate bars in tidal channels
Authors: BLONDEAUX PAOLO , VITTORI GIOVANNA
Published: January 2011

A simple idealized model is proposed to predict the appearance of alternate bottom forms in tidal channels. The model is based on the linear stability analysis of the flat seabed driven by tidal currents. The hydrodynamics is described by means of the full three-dimensional continuity and Reynolds equations. To quantify turbulent stresses, the Boussinesq assumption is introduced and an algebraic model is used for the eddy viscosity. The morphodynamics is described by the Exner equation and a simple sediment transport predictor. When applied to tidal channels, the model predicts the appearance of alternate bottom forms if the channel width is larger than a critical value. This finding agrees with previous analyses. However, the results obtained show the existence of two different modes. Close to the conditions of incipient sediment motion or when the suspended load is intense, the model suggests the appearance of an alternate sequence of shoals and pools (the first mode), characterized by a wavelength which might be comparable with the horizontal excursion of the tide. However, under such circumstances, to provide accurate quantitative results, the model should be extended to include the effects of the local acceleration and of the possible variations of the depth and width of the channel, which are neglected in the analysis. In all the other conditions, the model predicts the appearance of a second mode, presently termed tidal alternate bars. This mode is geometrically similar to the first mode, i.e. it is characterized by depositional and erosional areas which are found in an alternate arrangement, but it has significantly shorter wavelengths. In this case, the wavelength of the bedforms scales with the water depth. The physical mechanism generating tidal alternate bars appears to be the same as that generating tidal dunes, and it cannot be described by means of a depth-averaged approach.
Hysteresis in vortex-induced vibrations: critical blockage and effect ofm*
Authors: PRASANTH T. K. , PREMCHANDRAN V. , MITTAL SANJAY
Published: February 2011

The hysteretic behaviour of a freely vibrating cylinder, near the low-Reynolds-number end of synchronization/lock-in, in the laminar regime is investigated. Computations are carried out using a stabilized finite-element method. The flow remains two-dimensional in this Reynolds number regime. This is verified via comparison of two- and three-dimensional computations. The cylinder is free to undergo crossflow as well as in-line vibrations. The combined effect of mass ratio (1 ≤m* ≤ 100) and blockage (0.25% ≤B≤ 12.5%) is studied in detail. The existence of a critical mass ratio (m*cr= 10.11), below which hysteresis disappears for an unbounded flow situation, is identified. For higher mass ratio the hysteretic behaviour is observed for all blockage. However, the hysteresis loop width is found to vary withB; its variation withm* andBis studied. The concept of critical blockageBcris introduced. ForB≤Bcrthe response of the cylinder is virtually the same as that in an unbounded flow domain. The variation ofBcrwithm* is investigated. Furthermore,Bcris found to vary non-monotonically withm* form* ≤m*crand is almost constant form* ≥ 20. The effect of damping, as well as restricting the cylinder to undergo transverse vibrations only, on the hysteresis behaviour is studied. The transverse-only motion leads to a larger hysteresis loop width compared with the transverse and the in-line motion of the cylinder. An attempt is made to explain this by comparing the results from forced vibrations.
The enstrophy cascade in forced two-dimensional turbulence
Authors: VALLGREN ANDREAS , LINDBORG ERIK
Published: January 2011

We carry out direct numerical simulations of two-dimensional turbulence with forcing at different wavenumbers and resolutions up to 327682 grid points. In the absence of large-scale drag, a state is reached where enstrophy is quasi-stationary while energy is growing. In the enstrophy cascade range the energy spectrum has the form E(k) = εω2/3k−3, without any logarithmic correction, where εω is the enstrophy dissipation and is of the order of unity. However, is varying between different simulations and is thus not a perfect constant. This variation can be understood as a consequence of large-scale dissipation intermittency, following the argument by Landau (Landau & Lifshitz, Fluid Mechanics, 1959, Pergamon). In the presence of a large-scale drag, we obtain a slightly steeper spectrum. When forcing is applied at a scale which is somewhat smaller than the computational domain, no vortices are formed, and the statistics remain close to Gaussian in the enstrophy cascade range. When forcing is applied at a smaller scale, long-lived coherent vortices form at larger scales than the forcing scale, and intermittency measures become very large at all scales, including the scales of the enstrophy cascade. We conclude that the enstrophy cascade with a k−3-spectrum is a robust feature of the two-dimensional Navier–Stokes equations. However, there is a complete lack of universality of higher-order statistics of vorticity increments in the enstrophy cascade range.
Novel method of intralesional cidofovir injection into laryngotracheal papillomata
Authors: Sahota R S , Uddin F J , AL-Shukri J , Moir A A
Published: January 2011

Laryngeal papillomatosis is characterised by multiple papillomata affecting the upper respiratory tract. This condition is difficult to treat due to its recurrent nature. Treatment often involves surgical debulking. A number of non-surgical treatments have been reported. Intralesional cidofovir, a cytosine nucleoside analogue with antiviral activity, has been used in an attempt to manage the condition. We present a novel technique of administering cidofovir in a case of recurrent laryngotracheal papillomata.
It takes a thief to catch a thief
Authors: Humphrey Nicholas
Published: February 2011

Von Hippel & Trivers (VH&T) dismiss in a couple of pages the possible costs of self-deception. But there is a downside to self-deception that they do not consider. This is the loss of psychological insight into deceit by others that blindness to deceit by oneself is likely to entail.
Get thee to a laboratory
Authors: Dunning David
Published: February 2011

von Hippel & Trivers's central assertion that people self-deceive to better deceive others carries so many implications that it must be taken to the laboratory to be tested, rather than promoted by more indirect argument. Although plausible, many psychological findings oppose it. There is also an evolutionary alternative: People better deceive not through self-deception, but rather by not caring about the truth.
Protesting too much: Self-deception and self-signaling
Authors: McKay Ryan , Mijović-Prelec Danica , Prelec Dražen
Published: February 2011

Von Hippel & Trivers (VH&T) propose that self-deception has evolved to facilitate the deception of others. However, they ignore the subjective moral costs of deception and the crucial issue of credibility in self-deceptive speech. A self-signaling interpretation can account for the ritualistic quality of some self-deceptive affirmations and for the often-noted gap between what self-deceivers say and what they truly believe.
Deception through self-deception: Take a look at somatoform disorders
Authors: Troisi Alfonso
Published: February 2011

Patients with physical symptoms for which no organic cause can be found are distributed along a continuum of disease simulation that ranges from a sincere belief of having a serious disease to intentional presentation of false symptoms. The evolutionary hypothesis that self-deception improves the deception of others can explain such a combination of unconscious and intentional production of physical symptoms.
Aiming at self-deception: Deflationism, intentionalism, and biological purpose
Authors: Smith David Livingstone
Published: February 2011

Deflationists about self-deception understand self-deception as the outcome of biased information processing, but in doing so, they lose the normative distinction between self-deception and wishful thinking. Von Hippel & Trivers (VH&T) advocate a deflationist approach, but they also want preserve the purposive character of self-deception. A biologically realistic analysis of deception can eliminate the contradiction implicit in their position.
Evolutionary explanations need to account for cultural variation
Authors: Heine Steven J.
Published: February 2011

Cultural variability in self-enhancement is far more pronounced than the authors suggest; the sum of the evidence does not show that East Asians self-enhance in different domains from Westerners. Incorporating this cultural variation suggests a different way of understanding the adaptiveness of self-enhancement: It is adaptive in contexts where positive self-feelings and confidence are valued over relationship harmony, but is maladaptive in contexts where relationship harmony is prioritized.
LANGUAGE ASSESSMENT IN EDUCATION: TESTS, CURRICULA, AND TEACHING
Authors: Cumming Alister
Published: January 2011

Over the past decade, many concerted policy efforts have aimed to change the status and functions of language assessment in school systems or higher education, redefining relationships among language tests, curriculum policies, and classroom teaching practices. Conventionally, formal language tests describe individual proficiency levels in reference to normative standards for purposes of certifying abilities; screening applicants for higher education, employment, or immigration decisions; or monitoring the results of educational systems. Recently, many curriculum policies have been reconceptualized in reference to attainment or benchmark standards that specify (usually functional, communicative) goals for language education, learners' achievements, and program accountability. These innovations have adopted principles of criterion-referenced rather than norm-referenced assessment, creating new relations (as well as dilemmas) between language assessment and new curriculum policies, highlighting the nature of language assessment practices in programs, classrooms, or other learning contexts, particularly the foundation bases for defining language proficiency, alignment between assessments and curricula, the formative purposes of assessment in pedagogy, and the situations and interests of particular learner populations.
Dilemmas of a Vitalizing Vaccine Market: Lessons from the MMR Vaccine/Autism Debate
Authors: Bragesjö Fredrik , Hallberg Margareta
Published: February 2011

Argument

A number of issues related to vaccines and vaccinations in society are discussed in this paper. Our purpose is to merge an analysis of some recent changes in the vaccine market with social science research on the relationship between citizens and authorities. The article has two empirical parts. The first shows how the vaccine market, which for many years has had immense financial problems, nowadays seems to becoming economically vitalized, mostly due to the production of new and profitable vaccines. However prosperous the future may appear, certain reactions from the public regarding vaccination initiatives offer insight into inherent problems of vaccine policies in many Western countries. In the second part of the article, these problems are exemplified with the recent controversy over the MMR (measles, mumps, and rubella) vaccine. We conclude that in spite of the improving profit-margins, the vaccine market remains vulnerable and insecure. Vaccines are permeated bysociety, even more so than pharmaceutics that are used to cure or alleviate illnesses. Radical changes in financial conditions with promises of a more profitable market will not, we argue, solve other even more fundamental problems.
The impact of subtype, frequency, chronicity, and severity of child maltreatment on social competence and behavior problems
Authors: Manly Jody Todd , Cicchetti Dante , Barnett Douglas
Published: January 2011

This investigation examined the impact of dimensions within maltreatment such as the severity, frequency, chronicity, and subtypes of maltreatment and their relationship with child outcome. Children between the ages of 5 and 11 who participated in a summer camp program were assessed on their social competence, behavior problems, and peers ratings of cooperation, disruption, and initiation of aggression. The 235 participants were all from low-socioeconomic status families; 145 children were from families with documented histories of child maltreatment, whereas 90 of the children had no record of maltreatment. The study found that severity of the maltreatment, the frequency of Child Protective Services reports, and the interaction between severity and frequency were significant predictors of children's functioning. Additionally, the chronicity of the maltreatment in the family significantly predicted peer ratings of aggression. Subtype differences emerged as well, with children in the sexual abuse group being more socially competent than other maltreated children, and children in the physical abuse group having more behavior problems than nonmaltreated children. Regression analyses with cooccurrence of multiple subtypes of maltreatment indicated that physical neglect, physical abuse, and sexual abuse made significant unique contributions in predicting child outcomes. The advantages of exploring multiple dimensions within maltreatment, the necessity of developing better operational definitions of these dimensions, and social policy implications of the findings are discussed.
Oasis or Mirage? Assessing the Role of Abrupt Climate Change in the Prehistory of the Southern Levant
Authors: Maher Lisa A. , Banning E.B. , Chazan Michael
Published: January 2011

Few prehistoric developments have received as much attention as the origins of agriculture and its associated societal implications in the Near East. A great deal of this research has focused on correlating the timing of various cultural transformations leading up to farming and village life with dramatic climatic events. Using rigorously selected radiocarbon dates from archaeological sites and palaeoenvironmental datasets, we test the predominate models for culture change from the early Epipalaeolithic to the Pottery Neolithic (c. 23,000–8000 cal. bp) to explore how well they actually fit with well-documented and dated palaeoclimatic events, such as the Bølling-Allerød, Younger Dryas, Preboreal and 8.2 ka event. Our results demonstrate that these correlations are not always as clear or as consistent as some authors suggest. Rather, any relationships between climate change and culture change are more complicated than existing models allow. The lack of fit between these sources of data highlight our need for further and more precise chronological data from archaeological sites, additional localized palaeoclimatic data sets, and more nuanced models for integrating palaeoenvironmental data and prehistoric people's behaviours.
Gender and Mortuary Ritual at Ancient Teotihuacan, Mexico: a Study of Intrasocietal Diversity
Authors: Clayton Sarah C.
Published: January 2011

Archaeologists increasingly recognize a need to revise the scales at which we investigate identities such as gender, class and faction in ancient complex societies. In this article I present research on the expression of gender roles and ideologies in the performance of mortuary ritual in four distinctive residential areas of Classic Teotihuacan, including the urban compounds of La Ventilla 3, Tlajinga 33 and Tlailotlacan 6 and the hinterland settlement of Axotlan. Results indicate that gender was constructed and experienced differently across Teotihuacan society. This research demonstrates that multiscalar, comparative approaches to social identity make possible a fuller understanding of the significance of social heterogeneity in structuring early states.
The Social Brain and the Shape of the Palaeolithic
Authors: Gamble Clive , Gowlett John , Dunbar Robin
Published: January 2011

It is often the case in interdisciplinary accounts of human evolution that archaeological data are either ignored or treated superficially. This article sets out to redress this position by using archaeological evidence from the last 2.5 million years to test the social brain hypothesis (SBH) – that our social lives drove encephalization. To do this we construct a map of our evolving social complexity that concentrates on two resources – materials and emotions – that lie at the basis of all social interaction. In particular, novel cultural and biological mechanisms are seen as evolutionary responses to problems of cognitive load arising from the need to integrate more individuals and sub-units into the larger communities predicted by the SBH. The Palaeolithic evidence for the amplification of these twin resources into novel social forms is then evaluated. Here the SBH is used to differentiate three temporal movements (2.6–1.6 Ma, 1.5–0.4 Ma and 300–25 ka) and their varied evolutionary responses are described in detail. Attention is drawn to the second movement where there is an apparent disconnect between a rise in encephalization and a stasis in material culture. This disconnect is used to discuss the co-evolutionary relationship that existed between materials and emotions to solve cognitive problems but which, at different times, amplified one resource rather than the other. We conclude that the shape of the Palaeolithic is best conceived as a gradient of change rather than a set of step-like revolutions in society and culture.
Echocardiographic imaging of anomalous origin of the coronary arteries
Authors: Cohen Meryl S. , Herlong René J. , Silverman Norman H.
Published: January 2011

In the past, coronary arterial anomalies have been difficult to diagnose by non-invasive methods. Identification of coronary arterial origins is now a routine part of the standard paediatric echocardiogram. Anomalous origin of a coronary artery from the pulmonary trunk is an extremely important diagnosis to make. Many echocardiographic features are not directly related to the visualisation of the coronary arterial origin. Left ventricular dilation and abnormal ventricular performance are common, along with mitral regurgitation and evidence of collateralisation of the flow from the coronary artery that has an aortic origin. In some cases, the anomalous coronary artery can be seen to arise directly from the pulmonary trunk. Congenital atresia of the main stem of the left coronary artery has a similar echocardiographic presentation, except that its aortic origin is not determined. Anomalous aortic origin of the coronary artery has important implications, as the first presenting symptom can be sudden death. With meticulous attention to the origins of the coronary arteries, echocardiographic diagnosis can also be achieved. In contrast to the anomalous origin of a coronary artery from the pulmonary trunk, ventricular performance is usually normal. Whenever there is doubt as to the definition of the origin of the coronary arteries and, indeed, when there is serious clinical concern that a coronary artery has an anomalous origin, other testing, such as cine-computed tomography, magnetic resonance imaging, or cardiac catheterisation may be indicated for confirmation or to provide greater anatomic detail.
Behavioural correlates of active commuting to school in Spanish adolescents: the AFINOS (Physical Activity as a Preventive Measure Against Overweight, Obesity, Infections, Allergies, and Cardiovascular Disease Risk Factors in Adolescents) study
Authors: Martínez-Gómez David , Veiga Oscar L , Gomez-Martinez Sonia , Zapatera Belen , Calle Maria E , Marcos Ascension
Published: January 2011

Objective

To examine the associations between lifestyle factors and active commuting to school in Spanish adolescents.

Design

Cross-sectional study. Lifestyle factors (overall/extracurricular physical activity, television viewing, reading as a hobby, sleep duration, breakfast/fruit intake, smoking and alcohol intake) as well as mode and duration of commuting to school were self-reported. Active commuters were defined as those adolescents who walked or cycled to school.

Setting

Secondary schools in Madrid, Spain.

Subjects

Adolescents (n 2029) aged 13 to 17 years.

Results

Similar percentages of adolescent boys (57·6 %) and girls (56·1 %) were classified as active commuters to school (P = 0·491). The analysis showed that only adequate sleep duration (OR = 1·35, 95 % CI 1·11, 1·66; P = 0·003) and breakfast consumption (OR = 0·66, 95 % CI 0·49, 0·87; P = 0·004) were independently associated with active commuting to school.

Conclusions

Only those behaviours that occur immediately before commuting to school (sleep and breakfast) are associated with active commuting in Spanish adolescents.
Blood pressure and BMI in adolescents in Aracaju, Brazil
Authors: Polderman Jorinde , Gurgel Ricardo Queiroz , Barreto-Filho José Augusto S , Roelofs Rik , Ramos Ricardo Emanoel de O , de Munter Jeroen S , Wendte Johannes F , Agyemang Charles
Published: February 2011

Objective

To assess the prevalence of high blood pressure (BP) and the association of overweight and obesity with high BP among adolescents in Aracaju, Brazil.

Design

Cross-sectional study. The main outcome measure was the proportion of adolescents with high BP (sex-, age- and height-specific ≥95th percentile). The main predictor variables were overweight and obesity defined according to the criteria of the International Obesity Task Force. Other covariates included age, socio-economic status and leisure-time physical activity.

Setting

Aracaju, Brazil, capital city of Sergipe State, north-eastern Brazil.

Subjects

A random sample of 1002 adolescents (442 boys and 560 girls) aged 12–17 years selected from twenty public schools and ten private schools were studied.

Results

The prevalence of high BP was 16·9 % (95 % CI 13·1, 21·7) in boys and 12·9 % (95 % CI 9·0, 18·0) in girls. After adjusting for age, socio-economic status and leisure-time physical activity in both boys and girls, overweight (prevalence ratio (PR) = 1·93, 95 % CI 1·08, 3·48; PR = 4·34, 95 % CI 2·58, 7·30, respectively) and obesity (PR = 4·87, 95 % CI 2·35, 10·11; PR = 5·18, 95 % CI 2·67, 10·06, respectively) were found to be associated with high BP.

Conclusions

These findings indicate a high prevalence of high BP in both boys and girls in Aracaju, Brazil. Overweight and obesity were strongly associated with high BP. These findings underscore the urgent need for public health measures to prevent increasing high BP in adolescents in Brazil. Targeting intervention in adolescence may be a critical method for preventing high BP in later life.
JNK2 Participates in Spindle Assembly during Mouse Oocyte Meiotic Maturation
Authors: Huang Xin , Tong Jing-Shan , Wang Zhen-Bo , Yang Cai-Rong , Qi Shu-Tao , Guo Lei , Ouyang Ying-Chun , Quan Song , Sun Qing-Yuan , Qi Zhong-Quan , Huang Ru-Xin , Wang Hai-Long
Published: January 2011

It is well known that c-Jun N-terminal kinase (JNK) plays pivotal roles in various mitotic events, but its function in mammalian oocyte meiosis remains unknown. In this study, we found that no specific JNK2 signal was detected in germinal vesicle stage. JNK2 was associated with the spindles especially the spindle poles and cytoplasmic microtubule organizing centers at prometaphase I, metaphase I, and metaphase II stages. JNK2 became diffusely distributed and associated with the midbody at telophase I stage. Injection of myc-tagged JNK2α1 mRNA into oocytes also revealed its localization on spindle poles. The association of JNK2 with spindle poles was further confirmed by colocalization with the centrosomal proteins, γ-tubulin and Plk1. Nocodazole treatment showed that JNK2 may interact with Plk1 to regulate the spindle assembly. Then we investigated the possible function of JNK2 by JNK2 antibody microinjection and JNK specific inhibitor SP600125 treatment. These two manipulations caused abnormal spindle formation and decreased the rate of first polar body (PB1) extrusion. In addition, inhibition of JNK2 resulted in impaired localization of Plk1. Taken together, our results suggest that JNK2 plays an important role in spindle assembly and PB1 extrusion during mouse oocyte meiotic maturation.
Systemische Sklerose - eine systematische Übersicht
Authors: Opitz  , Klein-Weigel  , Riemekasten
Published: January 2011

Here we give an overview over treatment recommendations propagated by the European League Against Rheumatism (EULAR), EULAR Scleroderma Trials and Research Group, the German Network for Systemic Sclerosis, the European Respiratory Society, and the International Society of Heart and Lung Transplantation. As response to immunosuppressant (IS) therapy is usually weaker in systematic sclerosis (SSc) compared to other connective tissue disorders IS should be considered with caution. To prevent scleroderma renal crisis steroid doses should not exceed 15 mg/d. The definitive role of a number of new immunosuppressant drugs and the effects of autologous stem cell transplantation in systemic clerosis (SSc) have to be elucidated. Prostanoids, especially iloprost, are widely used as intravenous formulas for the treatment of severe Raynauds phenomenon (RP) and digital ulcers (DU). Calcium antagonists are of limited therapeutic value. Bosentan, an oral endothelin receptor antagonists (ETRA), was shown to prevent new DU, but failed to heal existing DU, while the oral phopshodiesterase inhibitor (PDI) Sildenafil reduces the occurrence of RP and might be effective in ulcer healing. Combination therapies of PDI with ETRA are currently evaluated. Therapy of pulmonary arterial hypertension (PAH) is usually started as oral monotherapy, frequently using an ETRA. When this first-line therapy is not tolerated ETRA is substituted by PDI. If treatment goals are not reached with monotherapy combinationtherapy is started, for example by adding a PDI to an existing ETRA. In general, treatment of PAH in patients with connective tissue disease follows the same algorithms as in idiopathic PAH.
Aortic elastic properties are impaired in patients with Graves ophtalmopathy
Authors: Akcay  , Akcay  , Yeter  , Durmaz  , Keles  , Bayram  , Yuksel  , Yuksel Kalkan  , Ayhan  , Simavli  , Simsek  , Bozkurt
Published: January 2011

Backround: Aortic elastic properties have been shown to be an important predictor of cardiovascular morbidity and mortality. Hyperthyroidism was shown to be an important cause of impaired aortic elastic properties both due to the direct effect of the thyroid hormones on the aorta and also due to modulating effects of thyroid hormones on the vascular renin angiotensin system. However, there is no study investigating the aortic elastic properties in Gravess patients who were euthyroid. The goal of the present study was to investigate the aortic elastic properties of patients with Graves Ophtalmopathy (GO) who had been euthyroid for at least 3 months. Patients and methods: A cross-sectional study was performed on 47 GO patients and 27 controls. Aortic-diastolic and aortic-systolic diameters, aortic strain, aortic distensibility, and aortic stiffness indices were calculated from the diameter of the thoracic aorta as measured by transthoracic echocardiography. Results: The aortic stiffness index was markedly increased (31 ± 26 vs. 17 ± 8.9; p = 0.015) and aortic strain was markedly reduced (20.3 ± 10 % vs. 25.9 ± 12 %; p = 0.046) in the GO group relative to the control group. Aortic distensibility was statistically significantly decreased in the GO group as compared to the control group (9.5 ± 5.7 10-3/kPa vs. 13.5 ± 7.1 10-3/kPa; p = 0.022). Weak correlations were detected between GO severity and aortic distensibility (r = -0.333, p = 0.011) as well as the aortic stiffness index (r = 0.266, p = 0.044). Conclusions: Aortic elastic properties were impaired in patients with GO. Therefore, patients with GO, especially those with severe manifestations of the condition, should be followed closely with regard to the occurrence of future cardiovascular events.
Budd-Chiari syndrome with fresh inferior vena cava thrombosis: agitation thrombolysis and balloon dilation
Authors: Ding  , Li  , Han  , Wu  , Shui  , Wang
Published: January 2011

Background: To evaluate retrospectively our initial clinical experience of agitation thrombolysis and balloon dilation in the treatment of Budd-Chiari syndrome (BCS) in patients with fresh inferior vena cava (IVC) thrombosis. Patients and methods: Between August 2004 and March 2009, a total of 12 BCS patients with fresh IVC thrombosis were treated with agitation thrombolysis and balloon dilation. Color Doppler ultrasound results, as well as mortality, morbidity, and the clinical outcomes were evaluated immediately after the treatment and at one week and 1, 3, 6, 12 months after the procedure and then annually thereafter. Results: Agitation thrombolysis and balloon dilation were technically successful in all patients, without immediate procedural complications. The inferior vena cavagrams after the procedure demonstrated complete resolution of the IVC thrombi without pulmonary embolism and full patency of the obstructed IVC. Thirty-day mortality was nil. Clinical success was observed in all patients respectively one month after the procedure. As of February 2010, the mean (± SD) follow-up period for the color Doppler ultrasound procedure was 21.7 ± 8.9 months (range, 12 - 32 months). All patients showed complete patency of the treated IVC without thrombosis, restenosis, or reobstruction, and all patients are alive with resolution of the symptoms at the time of this report. Conclusions: Our preliminary results suggest that agitation thrombolysis and balloon dilation may be a feasible approach for patients with BCS and fresh IVC thrombosis. However, larger studies are warranted to confirm these results.
Giant coronary sinus and absent right superior vena cava
Authors: Yuce  , Kizilkan  , Kus  , Davutoglu  , Sari
Published: January 2011

Although persistent left superior vena cava (PLSVC) is rare, it is the most common thoracic venous anomaly. The prevalence of PLSVC is 0.3 % in a general population and 10 % in patients with congenital heart disease. Diagnosis of PLSVC is usually incidental during cardiovascular imaging or surgery. Although PLSVC is usually not associated with any negative hemodynamic effect, it is important to be aware of its existence, since it may cause problems in central venous catheterization, pacemaker implantation and cardiopulmonary bypass. The overall proportion of absent right superior vena cava in patients with PLSVC is approximately 20 %. If PLSVC is associated with absence of the right superior vena cava, the coronary sinus may become gigantic due to excessive inflow. Herein, we report a case of PLSVC complicated by the absence of a right superior vena cava resulting in a giant coronary sinus.