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Kinds of Contact Terms modified by Contact Selected AbstractsDOES DIVERSITY IN URBAN SPACE ENHANCE INTERGROUP CONTACT AND TOLERANCE?GEOGRAFISKA ANNALER SERIES B: HUMAN GEOGRAPHY, Issue 1 2009Terje Wessel ABSTRACT. Contemporary urban theory has started to question the elevation of diversity as a panacea for enduring urban problems , segregation, prejudice and intergroup hostility. This critique coincides with an opposite tendency within classic contact theory and research. The latter tradition has developed an increasing enthusiasm for face-to-face interaction. The contact hypothesis, which presupposes established contact, has received conclusive support independent of target groups and contact settings. Research on ,lived diversity', which includes both contact and lack of contact, offers two supplementary insights. It shows, on the one hand, that boundaries are inscribed in social spaces. Physical proximity between ethnic and social groups tends to have a minor effect on interaction. Interaction, on the other hand, is not essential to attitude formation. Both subfields within contact research have confirmed that urban space may act as a catalyst for tolerant attitudes. This observation corresponds with increasing recognition of affective states, such as empathy, anxiety and group threat. Contact research has therefore, in summary, transcended the scope of the contact hypothesis. It has expanded into the realm of urban theory, which foreshadows future collaboration between the two traditions. Some key points for such exchange are suggested at the end of the article. Future research should combine an open-ended approach to casual contact with a diversified conception of diversity and a richer conception of urban space. A move in this direction would leave substantial space for geographical research. [source] MORTUARY DISPLAY AND CULTURAL CONTACT: A CEMETERY AT KASTRI ON THASOSOXFORD JOURNAL OF ARCHAEOLOGY, Issue 4 2006SARA OWEN Summary. This article explores how the patterns of development within the local populations prior to Greek colonization, or even Greek contact, can elucidate the process of Greek colonization. Focusing upon the Thracian Early Iron Age cemetery of Kastri on Thasos, it suggests that past interpretations of such cemeteries as undifferentiated is due to the imposition of modern ideas of value. This article instead uses the criterion of diversity to suggest that the cemetery in fact has clear patterns of social differentiation in the first and last periods of use. Furthermore imports are restricted to graves of highest diversity in the last period of use (the early seventh century BC). This pattern is repeated over Early Iron Age Thrace, and is indicative of a social change within Thrace prior to Greek colonization which saw nascent Thracian elites seeking out imports from many areas in order to bolster their status. [source] Opinion: ConTACT or CONtextBULLETIN OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE & TECHNOLOGY (ELECTRONIC), Issue 3 2001Homer J. Hall No abstract is available for this article. [source] Treatment of Inflammatory Facial Acne Vulgaris with Intense Pulsed Light and Short Contact of Topical 5-Aminolevulinic Acid: A Pilot StudyDERMATOLOGIC SURGERY, Issue 8 2006JINDA ROJANAMATIN MD BACKGROUND Photodynamic therapy (PDT) with topical 5-aminolevulinic acid (ALA) and red light (550,700 nm) has been introduced for effective treatment of facial acne. Untoward side effects are common, however. OBJECTIVE To evaluate the efficacy and safety of the short contact of topical ALA and intense pulsed light (IPL) in treatment of inflammatory facial acne. METHODS Fourteen patients with inflammatory facial acne were treated with IPL on the left side and combination of IPL and topical ALA on the right side at 3- to 4-week intervals for three sessions. Clinical photographs and lesion counts were obtained for evaluation. RESULTS All patients revealed a reduction in number of acne lesions on both sides. On the ALA-pretreated side, lesion counts decreased 87.7% at 12 weeks after the last treatment (p<.01). Meanwhile, lesion counts on the nonpretreated side decreased 66.8% (p<.01). In addition, a number of lesion counts on the ALA-pretreated side decreased. Mild edema and minimal crust developed on the combined-treatment side. CONCLUSION Short contact of topical ALA and IPL or IPL alone showed some beneficial effect in treatment of inflammatory facial acne; however, degree of improvement was better and remained longer with the combined regimen. Side effects were mild and reversible. [source] Sequential activation of transcription factors in lens inductionDEVELOPMENT GROWTH & DIFFERENTIATION, Issue 5 2000Hajime Ogino Since the pioneering work of the early 1900s, the lens has been used as a model system for the study of tissue development in vertebrates. A number of embryological transplantation experiments designed to elucidate the role of tissue interactions in the formation of the lens have led to the proposal of a stepwise determination model. This model has recently been refined through the identification of certain transcription factor genes, which exhibit distinct expression patterns and functional properties in the lens cell lineage. Otx2, Pax6, and Lens1 are induced by the adjacent anterior neural plate and expressed in predifferentiated lens ectoderm. Contact between the optic vesicle and lens ectoderm promotes expression of mafs, Soxs, and Prox1, which are responsible for the initiation of lens differentiation programs including crystallin expression, cell elongation, and cell cycle arrest. Further analysis of the expression and functional characteristics of these transcription factors will allow greater detail when describing the orchestration of genetic programs, which control tissue development from induction to maturation. [source] Female Adolescents and Their Sexuality: Notions of Honour, Shame, Purity and Pollution during the FloodsDISASTERS, Issue 1 2000Sabina Faiz Rashid This paper explores the experiences of female adolescents during the 1998 floods in Bangladesh, focusing on the implications of socio-cultural norms related to notions of honour, shame, purity and pollution. These cultural notions are reinforced with greater emphasis as girls enter their adolescence, regulating their sexuality and gender relationships. In Bangladeshi society, adolescent girls are expected to maintain their virginity until marriage. Contact is limited to one's families and extended relations. Particularly among poorer families, adolescent girls tend to have limited mobility to safeguard their ,purity'. This is to ensure that the girl's reputation does not suffer, thus making it difficult for the girl to get married. For female adolescents in Bangladesh, a disaster situation is a uniquely vulnerable time. Exposure to the unfamiliar environment of flood shelters and relief camps, and unable to maintain their ,space' and privacy from male strangers, a number of the girls were vulnerable to sexual and mental harassment. With the floods, it became difficult for most of the girls to be appropriately `secluded'. Many were unable to sleep, bathe or get access to latrines in privacy because so many houses and latrines were underwater. Some of the girls who had begun menstruation were distressed at not being able to keep themselves clean. Strong social taboos associated with menstruation and the dirty water that surrounded them made it difficult for the girls to wash their menstrual cloths or change them frequently enough. Many of them became separated from their social network of relations, which caused them a great deal of anxiety and stress. Their difficulty in trying to follow social norms have had far-reaching implications on their health, identity, family and community relations. [source] New insights on attention-deficit/hyperactivity disorder pharmacogenomicsDRUG DEVELOPMENT RESEARCH, Issue 3 2004Luis Augusto Rohde Abstract Although there is an impressive literature documenting both a strong participation of genetics in the etiology of attention-deficit/hyperactivity disorder (ADHD) and a high rate of response to stimulants and atomoxetine, surprisingly few studies on the pharmacogenomics of ADHD were conducted. This review aims to present a critical discussion of findings from recent investigations on this emerging new area of research. We performed a systematic computer review of the literature on ADHD pharmacogenomics. In addition, we contacted some research centers involved in research on ADHD genetics, asking for any kind of nonpublished data relevant for the topic of this revision. This review strategy identified only seven papers presenting nonduplicated research findings on ADHD pharmacogenomics. Contact with other investigators resulted in five more studies presented in medical meetings or still nonpublished. The majority of investigations are on dopaminergic genes, especially on polymorphisms at the dopamine transporter gene (DAT1). Although there were some instigating preliminary results suggesting the association between the homozygosity for the 10-repeat allele at DAT1 gene and response to methylphenidate, recent studies were not able to replicate these previous findings. Very few investigations addressed the role of nondopaminergic genes, or gene-to-gene interactions in ADHD pharmacogenomics. Pharmacogenomic studies of ADHD are in their infancy. We presented a discussion on the limitations and possible future directions of the research in the field. Drug Dev. Res. 62:172,179, 2004. © 2004 Wiley-Liss, Inc. [source] Close Physical Contact of the Heart with Diaphragm Causes Pseudo-Asynergy of Left Ventricular Inferior Wall in Normal SubjectsECHOCARDIOGRAPHY, Issue 7 2004Susumu Sakurai Ph.D. Paradoxical outward movement of left ventricular (LV) inferior wall in systole is occasionally recognized in normal subjects and clinically important in terms of the differential diagnosis between physiological pseudo-asynergy and pathological asynergy. In this study, the potential mechanisms by which pseudo-asynergy of LV inferior wall (PLI) is observed in normal subjects were investigated. PLI was defined as the outward movement of LV inferior wall observed during more than 50% of systole. The incidence of PLI was evaluated in 7843 consecutive subjects in routine echocardiography. The effects of body position and artificial gravity on the manifestation of PLI were also examined. PLI was observed in 0.11% (9/7842) of subjects on left lateral position. Measurement of the angle formed by LV long-axis and the long-axis of the body on frontal plane revealed that hearts in subjects with PLI were in relatively horizontal position. PLI was observed on sitting position in 43% (40/92) of subjects without PLI on left lateral position. The subjects with sitting position-induced PLI exhibited significantly higher obesity index. PLI was also induced by artificial gravity in 67% (14/21) of healthy volunteers on supine position, and the degree of PLI correlated with the intensity of gravity. Although the incidence of PLI in routine echocardiography is relatively low, PLI can be induced in normal subjects by any condition that causes close contact of LV inferior wall to diaphragm. Thus, PLI should be taken into consideration in the differential diagnosis of abnormal LV inferior wall motion, especially when performing exercise echocardiography. [source] Characteristics of Household Addresses That Repeatedly Contact 911 to Report Intimate Partner ViolenceACADEMIC EMERGENCY MEDICINE, Issue 6 2004Debra Houry MD Abstract Objectives: To determine whether households that generate several 911 calls differ in important ways from those that make a single call and to determine whether households that generate repeat 911 calls for intimate partner violence (IPV) experience more severe violence than those that do not. Methods: All cases of police-documented IPV were reviewed and linked with their respective 911 calls. Each incident report was reviewed to determine the relationship between the offender and victim, demographic characteristics of the offender and victim, weapon and substance involvement, prior incidents of IPV, and violence severity. Results: Of the 1,505 IPV addresses identified during the 12-month study interval, 1,010 (67.1%) placed more than one phone call to report IPV. Sixty-nine percent of African American victims, 50.6% of white victims, and 36.8% of Hispanic victims were repeat callers (p < 0.001). There were no differences between addresses that generated repeat calls versus single calls with respect to offender alcohol or drug involvement, presence of children, victim age, or offender age. Sixty-seven percent of households with severe violence and 66.9% of households with minor violence generated repeat 911 calls (p = 0.98). Conclusions: Ethnic differences in 911 use for IPV exist between African Americans, whites, and Hispanics. However, unknown societal, economic, or cultural issues could have influenced this finding. Households that repeatedly contacted 911 during the study interval to report IPV were not more likely to experience severe violence than those that placed a single 911 call. [source] Wetting Behavior of Amorphous and Crystalline Silicon Dioxide in Contact with a Silicate Slag Based on FayaliteADVANCED ENGINEERING MATERIALS, Issue 4 2010Christos G. Aneziris In this work the wetting behaviour of amorphous and crystalline silicon dioxide in contact with a silicate slag based on fayalite is demonstrated as a function of contact angles, activation energies of the kinetic stages of wetting. In addition the dynamic adhesion work has been calculated as a function of the inclination angle. The amorphous silicon dioxide in contact with the slag presents lower contact angles accompanied also by higher dynamic adhesion works in comparison to crystalline porous ceramics with the same chemistry. [source] A New Approach for Adipose Tissue Regeneration Based on Human Mesenchymal Stem Cells in Contact to Hydrogels,an In Vitro Study,ADVANCED ENGINEERING MATERIALS, Issue 10 2009Kirsten Peters In this study an approach for adipose tissue regeneration based on human mesenchymal stem cells and hydrogels as supporting matrix was evaluated. The gelatin-based hydrogels developed in this study were cytocompatible and stem cell adhesion onto hydrogel surfaces was higher as compared to tissue culture polystyrene. Furthermore, the adipogenic differentiation degree was increased. These results are promising for future applications of hydrogels in adipose tissue regeneration strategies. [source] Independent benefits of contact and friendship on attitudes toward homosexuals among authoritarians and highly identified heterosexualsEUROPEAN JOURNAL OF SOCIAL PSYCHOLOGY, Issue 4 2009Gordon Hodson Although intergroup contact is generally associated with positive intergroup attitudes, little is known about whether individual differences moderate these relations, or how contact might operate among prejudice-prone individuals. The present investigation explores Person,×,Contact and Person,×,Friendship interaction patterns among heterosexual university students. As expected, the positive relations of right-wing authoritarianism (RWA) and heterosexual identification with prejudice against homosexuals were weakened when participants reported increased contact, more positive contact, direct (personal) friendships, or indirect friendships (i.e., ingroup friends with outgroup friends) with homosexuals. These patterns held after controlling statistically for each person or situation variable. Contact and friendship exerted smaller or negligible effects among low authoritarians or low identifiers. Tests of indirect effects revealed that among high authoritarians or high identifiers, contact and friendship exerted influence on attitudes through group-level perceptions that homosexuals promote societal values and through increased self,other overlap with gay friends, each otherwise resisted by these individuals. Overall these results suggest that: (a) intergroup contact and intergroup friendship are related but distinct constructs; and (b) past findings underestimate contact effects by collapsing across levels of personal biases. Copyright © 2008 John Wiley & Sons, Ltd. [source] Relationship between Contact Voltage Drop and Frictional Coefficient under High-current Sliding ContactIEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Issue 4 2010Takahiro Ueno Member Abstract Large DC motors are used in various industrial applications. These motors repeatedly generate arcs between the brush and commutator, because the load change is intense and the current value is also large. In particular, for the case in which the current is concentrated on a part of the brush, brush burnout may occur as a result of overcurrent. Therefore, excellent brushes to withstand arc generation and with good electrical properties are required. In the present paper, we discuss the relation between contact voltage drop and frictional wear for electrical sliding contacts when high currents flow to the brush. Specifically, we investigate the means by which to prevent brush burnout when high-current flows to the brush. Copyright © 2010 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. [source] Increased health care utilization among long-term cancer survivors compared to the average Dutch population: A population-based studyINTERNATIONAL JOURNAL OF CANCER, Issue 4 2007Floortje Mols Abstract In the present study, self-reported health care utilization of cancer survivors is compared with those of an age- and gender-matched normative population and predictors of health care utilization are identified. A population-based, cross-sectional survey among 1893 long-term survivors of endometrial and prostate cancer and malignant lymphomas (Hodgkin's and non-Hodgkin's) diagnosed between 1989 and 1998 was conducted using the cancer registry of the Comprehensive Cancer Centre South. Cancer survivors visited their general practitioner somewhat more often compared to the age and gender-matched general Dutch population but this effect was not always statistically significant. In addition, they visited their medical specialist significantly more often. Survivors only sporadically (0,3%) visited or required a dietician, sexologist, oncology nurse, pastor, creative therapy or recovery program. Contact with a psychologist, physiotherapist and other cancer survivors took place somewhat more often. Patients visited a medical specialist less often if they were diagnosed with endometrial cancer (OR = 0.2; 95% CI = 0.1,0.5), if they were diagnosed between 10,15 years ago (OR = 0.6; 95% CI = 0.1,0.5) and if they were not married or divorced (OR = 0.5; 95% CI = 0.3,0.9). Contact with a psychologist was related to having a university or college degree (OR = 3.6; 95% CI = 1.3,9.4). Cancer survivors visited their specialist more often compared to the normative population. Changes in health care, such as less administrative work for the specialist and more efficiency, are probably necessary in order to cope adequately with the increasing demand on the system. © 2007 Wiley-Liss, Inc. [source] On the Relative Isolation of a Micronesian Archipelago during the Historic Period: the Palau Case-StudyINTERNATIONAL JOURNAL OF NAUTICAL ARCHAEOLOGY, Issue 2 2007Richard Callaghan Contact between Europeans and Pacific Islanders beginning in the early 1500s was both accidental and intentional. Many factors played a role in determining when contacts occurred, but some islands remained virtually isolated from European influence for decades or even centuries. We use Palau as a case-study for examining why this archipelago was free from direct European contact until 1783, despite repeated attempts by the Spanish to reach it from both the Philippines and Guam. As computer simulations and historical records indicate, seasonally-unfavourable winds and currents account for the Spanish difficulty. This inadvertently spared Palauans from early Spanish missionaries, disease, and rapid cultural change. © 2007 The Authors [source] Models of mental health nurse,general practitioner liaison: promoting continuity of careJOURNAL OF ADVANCED NURSING, Issue 5 2003Terence V. McCann BA MA PhD RMN RGN RNT mccann t.v. & baker h. (2003)Journal of Advanced Nursing 41(5), 471,479 Models of mental health nurse,general practitioner liaison: promoting continuity of care Aim and rationale.,Community mental health nurses and general practitioners share a pivotal role in the provision of mental health care in the community. The focus of this study was to identify models of general practitioner collaboration used by these nurses, and analyse the implications of these models for promoting continuity of care. The study was derived from a larger study of how community mental health nurses promote wellness with clients who are experiencing an early episode of psychotic illness. Methods.,This qualitative study used interviews and observation to collect data. The study took place in 1999 in regional and rural New South Wales, Australia and involved community mental health nurses. Findings.,The findings show that two models of nurse and general practitioner (GP) collaboration emerged from the data: Shared Care and Specialist Liaison. In the Shared Care model, nurses maintain close contact with GPs throughout the episode of acute care. In the Specialist Liaison model, the community mental health team assumes overall responsibility for care and treatment throughout the acute episode of illness. Contact with GPs throughout the episode of care by the community mental health team is, at best, intermittent. Conclusion.,The findings suggest that the Shared Care model is more consistent with supporting personal and organizational continuity of care, whereas the Specialist Liaison model is limited to encouraging personal continuity of care but further study is needed. [source] A Group-Mediated Cognitive-Behavioral intervention for Increasing Adherence to Physical Activity in Older Adults,JOURNAL OF APPLIED BIOBEHAVIORAL RESEARCH, Issue 1 2000Lawrence R. Brawley This study examined the efficacy of a group-mediated cognitive behavioral intervention (GMCB) on adherence rates to physically active lifestyles in older adults. Sixty older adults were randomized to I of 3 groups: waiting list control (WLC), a standard physical activity program (SPA), or GMCB. The SPA and GMCB involved 6 months of combined center- and home-based activity. Contact with participants was then terminated with a follow-up assessment at 9 months. Results revealed that, at the 9-month follow-up the GMCB group had a higher frequency of weekly physical activity than the SPA group. At 6 months, both groups were more active, had higher aerobic power, and improved HRQL when compared with the control group. [source] A PCR-DGGE method for detection and identification of Campylobacter, Helicobacter, Arcobacter and related Epsilobacteria and its application to saliva samples from humans and domestic petsJOURNAL OF APPLIED MICROBIOLOGY, Issue 6 2007R.F. Petersen Abstract Aims:, To develop a PCR-denaturing gradient gel electrophoresis (PCR-DGGE) method for the detection and identification of Campylobacter, Helicobacter and Arcobacter species (Epsilobacteria) in clinical samples and evaluate its efficacy on saliva samples from humans and domestic pets. Methods and Results:, A semi-nested PCR was developed to allow sensitive detection of all Epsilobacteria, with species separation undertaken by DGGE. A database was constructed in BioNumerics using 145 strains covering 51 Campylobacter, Arcobacter and Helicobacter taxa; Nineteen distinct DGGE profile-groups were distinguished. This approach detected Epsilobacteria in all saliva samples collected from humans, cats and dogs, and identified Campylobacter concisus and/or Campylobacter gracilis in the human samples. The pet animal samples were taken from individuals with oral/dental diseases; PCR-DGGE identified up to four different species in each sample. The most common species detected included Wolinella succinogenes, Arcobacter butzleri and two hitherto uncultured campylobacters. The enteropathogen Campylobacter lari was also found. Conclusions:, PCR combined with DGGE is a useful tool for direct detection and preliminary identification of Epsilobacteria in the oral cavity of humans and small animals. Significance and Impact of the Study:, The PCR-DGGE method should allow determination of the true prevalence and diversity of Epsilobacteria in clinical and other samples. Contact with the oral cavity of domestic pets may represent a route of transmission for epsilobacterial enteric diseases. [source] Selective Abortion for Down Syndrome: The Relation Between the Quality of Intergroup Contact, Parenting Expectations, and Willingness to TerminateJOURNAL OF APPLIED SOCIAL PSYCHOLOGY, Issue 3 2010Karen L. Lawson This study examines the links between familiarity with individuals with Down syndrome (DS), perceptions of parenting a child with DS, and willingness to consider selective termination subsequent to a fetal diagnosis of DS. Within a sample of childless young adults (N = 280), those reporting personal familiarity indicated both more positive attitudes toward parenting a child with DS and more certainty that they would not abort following a prenatal diagnosis. In further support of contact theory, the quality of the past intergroup interactions moderated these findings. The potential role of negative stereotypes in selective-abortion decision making and implications for prenatal counseling protocols are discussed. [source] Autopoietic Law and the ,Epistemic Trap': A Case Study of Adoption and ContactJOURNAL OF LAW AND SOCIETY, Issue 3 2004Carole Smith This paper examines autopoietic theory with reference to functionally differentiated social sub-systems, particularly law, science, and politics. It sets out to ,test' the practical relevance of autopoietic theory in relation to ongoing debates about post-adoption contact and personal identity issues. Law has resisted social scientific pressure to regulate post-adoption contact in the context of a social policy approach, which emphasizes the relationship between identity development and genealogical continuity. I argue that law's response to this pressure relates to the particular nature of adoption as this is expressed through legislation and case law. Law's refusal to intervene in post-adoption contact reflects its self-referential operations and its attempts to avoid epistemic entrapment by a social scientific discourse. Applying autopoietic theory to law's practical operations in adoption clarifies its explanatory value, provides a conceptual framework for understanding the relationship between law, politics, and social science and indicates areas that require theoretical refinement. [source] Serological evidence of alpha herpesvirus infection in sooty mangabeysJOURNAL OF MEDICAL PRIMATOLOGY, Issue 3 2002R.D. Henkel Contact between sooty mangabeys (SMs) and a pigtailed macaque prompted the serological screening of SMs for evidence of infection with B virus. Serological tests detected SM antibodies that reacted with B virus polypeptides. Additional testing was performed with sera from SMs with no previous contact with macaques. Results from these tests indicated that 56% (33/59) of the SMs had antibodies that reacted with B virus and SA8. SM antibodies also reacted with herpesvirus papio 2 and to a lesser extent with human alpha herpesviruses (HSV-1 and HSV-2). There was an age-related increase in the presence of these antibodies in SMs that was consistent with the serological pattern of reactivity observed in other nonhuman primate species infected with alpha herpesviruses. These data suggest that SMs may be a host for a herpesvirus that is antigenically similar to those viruses present in other Old World nonhuman primates. [source] Surveillance and risk factors of norovirus gastroenteritis among children in a southern city of China in the fall,winter seasons of 2003,2006JOURNAL OF PAEDIATRICS AND CHILD HEALTH, Issue 1-2 2010Ying-Chun Dai Aim: Noroviruses (NoVs) are an important cause of acute gastroenteritis but knowledge on the disease burden and epidemiology in children in the developing countries remains limited. In this study, we performed a surveillance of NoV gastroenteritis in children of China to address some of the questions. Methods: Faecal specimens from children (<5 years of age) at outpatient clinics of the Nan Fang Hospital in Guangzhou, China during the fall,winter seasons in 2003,2006 were tested for rotaviruses (RVs) and NoVs. A questionnaire on clinical records and hygiene habits was collected from each patient. Results: Among 957 stool specimens tested, 488 (51%) specimens were positive for RVs. NoVs were detected in 112 (24%) of the 469 RV negative specimens. The Genogroup II (GII), particularly GII-4, viruses were predominant. No significant difference of clinical symptoms, hospitalisation and patient care expenses were found between children infected with NoVs and RVs. Consumption of uncooked food is a risk for NoV infection. Contact with diarrhoea patients is a suspected risk factor. Cutting nails frequently is a protective factor against NoV infection. Conclusions: NoVs are an important cause of acute gastroenteritis in children which need special attention of patient care at the clinics in addition to RVs. The awareness of those risk factors may help future disease control and prevention. [source] Racial Reconciliation in South Africa:Interracial Contact and Changes over TimeJOURNAL OF SOCIAL ISSUES, Issue 2 2010James L. Gibson Relying upon,Gibson's (2004),theory equating lack of prejudice with interracial "reconciliation," we investigate racial attitudes based on a 2004 nationally representative survey of South Africans. We begin by documenting substantial group-based differences in intergroup prejudice, with Blacks being considerably less reconciled with Whites as compared to the three racial minorities' levels of reconciliation with Blacks. We also discover that the Black majority has become less reconciled with Whites over the period from Gibson's survey (in 2001) to the current survey (in 2004). Improvement in racial attitudes is observed among the other three groups. We next investigate intergroup contact as an explanation of differences in attitudes, finding some effects of mere contact and powerful effects of intimate contact. However, the consequences of contact differ across the various racial groups. [source] Surface Devitrification and the Growth of Cristobalite in Borofloat® (Borosilicate 8330) GlassJOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 9 2010Berker Mo, ulkoç Borofloat® (borosilicate 8330) glass is an important type of inorganic glass, both scientifically and commercially. During prolonged heat treatment of this glass above its glass transition temperature of 525°C, heterogeneous nucleation, and growth of cristobalite crystals occur. The kinetics and morphology of this crystal growth have been studied for heat treatment temperatures at and above 660°C. The activation energy for crystal growth is estimated to be 185±10 kJ/mol. This is attributed to the diffusion of boron, rather than sodium, being the rate-limiting step within the borosilicate framework. Contact with the atmosphere is shown to initiate the nucleation of cristobalite crystals, while deposition of a thin silicon nitride surface coating on the glass helps to prevent this nucleation. [source] Electrochemical Behavior of Gel-Derived Lanthanum Calcium Cobalt Ferrite Cathode in Contact with LAMOX ElectrolyteJOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 7 2008Tsu-Yung Jin The electrochemical performance and structural features of (La1,yCay)(CoxFe1,x)O3 cathode prepared via a citrate acid gel route are studied when it is interfaced with the (La1.8Dy0.2)(Mo2,zWz)O9 electrolyte. The resistance and chemical capacitance of a low-frequency arc are extracted from the impedance results to evaluate its catalytic activity in oxygen reduction reaction (ORR). (La0.75Ca0.25)(Co0.8Fe0.2)O3 cathode exhibits the minimum area-specific resistance of 0.9 , cm2 and maximum capacitance of 5.7 mF/cm2 at 800°C among the compositions of x=0.1,0.9 and y=0.25. As the Co content increases, the decrease in resistance outweighs the increase in capacitance so that the product of resistance and capacitance (RC time constant) decreases. In contrast, when varying the Ca content of the A-site, the changes in resistance and the capacitance compensate each other; hence the RC time constant is virtually unchanged with respect to the calcium content. Thus, Co is a more influential element than Ca on the ORR catalytic activity. The pore structure study reveals a small amount of Mo diffuses from the electrolyte into the cathode, and its quantity is reduced when interfaced to an electrolyte of high W content. [source] Skin hydration and transepidermal water loss in patients with a history of sulfur mustard contact: a case,control studyJOURNAL OF THE EUROPEAN ACADEMY OF DERMATOLOGY & VENEREOLOGY, Issue 8 2009Seyyed Masoud Davoudi Abstract Background,, Skin lesions are among the most common complications of contact with sulfur mustard. Objective,, This study was aimed to measure skin water content and transepidermal water loss (TEWL) in patients with a history of sulfur mustard contact. Methods,, Three hundred ten male participants were included in this study: 87 (28.1%) sulfur mustard,exposed patients with current skin lesions (group 1), 71 (22.9%) sulfur mustard,exposed patients without skin lesions (group 2), 78 (25.2%) patients with dermatitis (group 3) and 74 (23.8%) normal controls (group 4) The water content and TEWL of skin was measured at four different locations of the body: forehead, suprasternal, palm and dorsum of hand. Nonparametric statistical tests (Kruskal,Wallis) were used to compare the four groups, and P < 0.05 was considered statistically significant. Results,, The mean age of participants were 44.0 ± 6.7, 41.9 ± 5.9, 43.8 ± 9.3 and 44.8 ± 8.9 years in groups 1 to 4, respectively (P = 0.146). Xerosis, post-lesional hyperpigmentation and lichenification were significantly more common in either sulfur mustard,exposed participants or non-exposed participants with dermatitis (P < 0.05). Skin hydration was higher in subjects with sulfur mustard contact than in non-injured participants (P < 0.05) in the dorsum and palm of hands and forehead. TEWL was significantly higher in participants only in suprasternal area and dorsum of hand. Conclusion,, Contact with sulfur mustard agent can alter biophysical properties of the skin-especially the function of stratum corneum as a barrier to water loss-several years after exposure. Conflicts of interest None declared. [source] Clinical measurement of thrombin generation by calibrated automated thrombography requires contact factor inhibitionJOURNAL OF THROMBOSIS AND HAEMOSTASIS, Issue 11 2004R. Luddington Summary.,Background: Measurement of thrombin generation by calibrated automated thrombography (CAT) could fulfill the requirements of a global test of coagulability and is potentially applicable to routine clinical laboratory practice. The purpose of this study was to determine if corn trypsin inhibitor (CTI) could be used to abolish contact factor activation in this assay, thus allowing accurate measurement of low tissue factor (TF) concentration-triggered thrombin generation on samples taken in a routine clinical setting. Methods: The endogenous thrombin potential (ETP) was measured by CAT. Results: The study demonstrated that addition of CTI after plasma separation is not sufficient and blood must be drawn into tubes containing CTI if in-vitro contact factor-activated thrombin generation is to be abolished. Contact factor-activated thrombin generation is completely inhibited at a CTI concentration of 18.3 µg mL,1 whole blood. Increasing the CTI concentration above this level does not lead to suppression of the TF-triggered ETP. At a TF concentration of 2 pmol, ETPs were significantly lower in the presence of CTI (P < 0.001). The difference (no CTI minus CTI) between results ranged from ,,1 to 2159 nM min,1 (median ,,754). Whilst the low concentration TF-ETP assay was not optimized to distinguish degrees of coagulability between patient samples, there was a significant difference in ETP between normal and hemophilia samples and samples from patients with a clinical prothrombotic tendency. Conclusions: CTI can be applied to ETP measurement by CAT. This permits the use of CAT in a low TF-triggered thrombin generation assay without concern for the effect of interference from in-vitro contact factor activation and the optimum reagent conditions for using CAT as a global test of coagulability in clinical practice can now be defined. [source] Cognition, Language Contact, and the Development of Pragmatic Comprehension in a Study-Abroad ContextLANGUAGE LEARNING, Issue 1 2008Naoko Taguchi This study examined two issues: (a) whether there are gains in accurate and speedy comprehension of second language (L2) pragmatic meaning over time and (b) whether the gains are associated with cognitive processing ability and the amount of language contact in an L2 environment. Forty-four college students in a US institution completed three measures three times over a 4-month period: (a) the pragmatic listening test that measured the ability to comprehend implied speaker intentions, (b) the lexical access test that measured ability to make speedy semantic judgment, and (c) the language contact survey that examined the amount of time learners spent in L2 outside the class. The learners' pragmatic comprehension was analyzed for accuracy (the scores on the pragmatic listening test) and comprehension speed (the average time taken to answer items correctly). Results showed that the learners made significant improvement on comprehension speed but not on accuracy of comprehension. Lexical access speed was significantly correlated with comprehension speed but not with accuracy. The amount of speaking and reading outside class that the students reported on the language contact survey significantly correlated with the gains in comprehension speed but not with accuracy of comprehension. [source] Being in Public: The Threat and Promise of Stranger ContactLAW & SOCIAL INQUIRY, Issue 1 2007Davina Cooper First page of article [source] Approximate Formula for the Contact between Truncated Surfaces and Frictional Characteristics of a Journal Bearing in Mixed LubricationLUBRICATION SCIENCE, Issue 3 2004M. Nonogaki Abstract This paper presents an approximate formula for the contact of a non-Gaussian distribution of truncated surfaces, which is useful for mixed lubrication theory, and gives a method for the determination of the truncation parameters in this formula from a measured roughness profile. Using this approximate formula for a contact, the approximate formula for the friction coefficient of a journal bearing in mixed lubrication, which was previously proposed by the authors, is modified for truncated surfaces, and the frictional characteristics are demonstrated for various parameters of truncated roughness using the modified formula. [source] | |||||||||||||||||||||||||||||||||||||||||||||||||