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Sample records for attachment ii sample

  1. Spectroscopy of PTCDA attached to rare gas samples: clusters vs. bulk matrices. II. Fluorescence emission spectroscopy

    OpenAIRE

    Dvorak, M.; Müller, M; Knoblauch, T.; Bünermann, O.; Rydlo, A.; Minniberger, S.; Harbich, W.; Stienkemeier, F.

    2012-01-01

    The interaction between PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecules and solid rare gas samples is studied by means of fluorescence emission spectroscopy. On the one hand, laser-excited PTCDA-doped large argon, neon and para-hydrogen clusters in comparison with PTCDA embedded in helium nanodroplets are spectroscopically characterized with respect to line broadening and shifting. A fast non-radiative relaxation is observed before a radiative decay in the electronic ground st...

  2. Spectroscopy of PTCDA attached to rare gas samples: clusters vs. bulk matrices. II. Fluorescence emission spectroscopy

    CERN Document Server

    Dvorak, M; Knoblauch, T; Bünermann, O; Rydlo, A; Minniberger, S; Harbich, W; Stienkemeier, F

    2012-01-01

    The interaction between PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecules and solid rare gas samples is studied by means of fluorescence emission spectroscopy. On the one hand, laser-excited PTCDA-doped large argon, neon and para-hydrogen clusters in comparison with PTCDA embedded in helium nanodroplets are spectroscopically characterized with respect to line broadening and shifting. A fast non-radiative relaxation is observed before a radiative decay in the electronic ground state takes place. On the other hand, fluorescence emission studies of PTCDA embedded in bulk neon and argon matrices results in much more complex spectral signatures characterized by a splitting of the different emission lines. These can be assigned to the appearance of site isomers of the surrounding matrix lattice structure.

  3. Attachment fixation of the overdenture: part II.

    Science.gov (United States)

    Mensor, M C

    1978-01-01

    Many attachment systems of the bar or stud type increase the stability of an overdenture. When selecting an attachment it is essential to consider the skill of the dentist-laboratory team as well as the dexterity of the patient and to use the easiest system that will still improve stabilization. Generally simplicity in design, ease of maintenance, and minimum leverage should be paramount considerations in selection. Use of a guide such as the EM Gauge and of the EM Attachment Selector significantly reduces the confusion in selecting attachments and increases the working armamentarium for stabilizing an overdenture. PMID:340660

  4. Spectroscopy of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) attached to rare gas samples: Clusters vs. bulk matrices. II. Fluorescence emission spectroscopy

    OpenAIRE

    Dvorak, Matthieu; Mueller, Markus; Knoblauch, Tobias; Buenermann, Oliver; Rydlo, Alexandre; Minniberger, Stefan; Harbich, Wolfgang; Stienkemeier, Frank

    2012-01-01

    The interaction between 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) molecules and solid rare gas samples is studied by means of fluorescence emission spectroscopy. Laser-excited PTCDA-doped large argon, neon, and para-hydrogen clusters along with PTCDA embedded in helium nanodroplets are spectroscopically characterized with respect to line broadening and shifting. A fast non-radiative relaxation is observed before a radiative decay in the electronic ground state takes place. In co...

  5. Spectroscopy of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) attached to rare gas samples: Clusters vs. bulk matrices. II. Fluorescence emission spectroscopy

    Science.gov (United States)

    Dvorak, Matthieu; Müller, Markus; Knoblauch, Tobias; Bünermann, Oliver; Rydlo, Alexandre; Minniberger, Stefan; Harbich, Wolfgang; Stienkemeier, Frank

    2012-10-01

    The interaction between 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) molecules and solid rare gas samples is studied by means of fluorescence emission spectroscopy. Laser-excited PTCDA-doped large argon, neon, and para-hydrogen clusters along with PTCDA embedded in helium nanodroplets are spectroscopically characterized with respect to line broadening and shifting. A fast non-radiative relaxation is observed before a radiative decay in the electronic ground state takes place. In comparison, fluorescence emission studies of PTCDA embedded in bulk neon and argon matrices result in much more complex spectral signatures characterized by a splitting of the different emission lines. These can be assigned to the appearance of site isomers of the surrounding matrix lattice structure.

  6. Sampling and II-Sampling Expansions

    Indian Academy of Sciences (India)

    J Sousa Pinto; R F Hoskins

    2000-11-01

    Using the hyperfinite representation of functions and generalized functions this paper develops a rigorous version of the so-called `delta method' approach to sampling theory. This yields a slightly more general version of the classical WKS sampling theorem for band-limited functions.

  7. Sample Exchange Evaluation (SEE) Report - Phase II

    International Nuclear Information System (INIS)

    This report describes the results from Phase II of the Sample Exchange Evaluation (SEE) Program, a joint effort to compare analytical laboratory performance on samples from the Hanford Site's high-level waste tanks. In Phase II, the program has been expanded to include inorganic constituents in addition to radionuclides. Results from Phase II that exceeded 20% relative percent difference criteria are identified

  8. Attachment Discontinuity in a High-Risk Sample

    OpenAIRE

    Ryzin, Mark J. Van; Carlson, Elizabeth A.; Sroufe, L. Alan

    2011-01-01

    In this study, we evaluated complex patterns of attachment discontinuity across time in 133 individuals from the Minnesota Study of Risk and Adaptation. In addition to individuals who were either insecure or secure across infancy, late adolescence, and adulthood (Stably Insecure and Stably Secure, respectively), we found three additional groups: Infant/Adolescent Secure, Infant/Adult Secure, and Infant-only Secure. Changes in attachment representations in these groups across time corresponded...

  9. Sample Exchange Evaluation (SEE) Report - Phase II

    Energy Technology Data Exchange (ETDEWEB)

    Winters, W.I.

    1994-09-28

    This report describes the results from Phase II of the Sample Exchange Evaluation (SEE) Program, a joint effort to compare analytical laboratory performance on samples from the Hanford Site`s high-level waste tanks. In Phase II, the program has been expanded to include inorganic constituents in addition to radionuclides. Results from Phase II that exceeded 20% relative percent difference criteria are identified.

  10. Attachment discontinuity in a high-risk sample.

    Science.gov (United States)

    Van Ryzin, Mark J; Carlson, Elizabeth A; Sroufe, L Alan

    2011-07-01

    In this study, we evaluated complex patterns of attachment discontinuity across time in 133 individuals from the Minnesota Study of Risk and Adaptation. In addition to individuals who were either insecure or secure across infancy, late adolescence, and adulthood (Stably Insecure and Stably Secure, respectively), we found three additional groups: Infant/Adolescent Secure, Infant/Adult Secure, and Infant-only Secure. Changes in attachment representations in these groups across time corresponded to stresses and supports in the socio-emotional context. The two groups classified as secure in adulthood (Stably Secure and Infant/Adult Secure) experienced more positive relationship-based outcomes than the other three groups. Our results suggest that continuity may be a reflection of a stable social context as much as it is an artifact of early working models, and illustrate "homeorhetic" pathways of development, in which not only the direction but the length of a developmental pathway can constrain future developmental trajectories. PMID:21718224

  11. Testing For Measurement Invariance of Attachment Across Chinese and American Adolescent Samples.

    Science.gov (United States)

    Ren, Ling; Zhao, Jihong Solomon; He, Ni Phil; Marshall, Ineke Haen; Zhang, Hongwei; Zhao, Ruohui; Jin, Cheng

    2016-06-01

    Adolescent attachment to formal and informal institutions has emerged as a major focus of criminological theories since the publication of Hirschi's work in 1969. This study attempts to examine the psychometric equivalence of the factorial structure of attachment measures across nations reflecting Western and Eastern cultures. Twelve manifest variables are used tapping the concepts of adolescent attachment to parents, school, and neighborhood. Confirmatory factor analysis is used to conduct invariance test across approximately 3,000 Chinese and U.S. adolescents. Results provide strong support for a three-factor model; the multigroup invariance tests reveal mixed results. While the family attachment measure appears invariant between the two samples, significant differences in the coefficients of the factor loadings are detected in the school attachment and neighborhood attachment measures. The results of regression analyses lend support to the predictive validity of three types of attachment. Finally, the limitations of the study are discussed. PMID:25586150

  12. Is It Attachment Style or Socio-Demography: Singlehood in a Representative Sample

    OpenAIRE

    Petrowski, Katja; Schurig, Susan; Schmutzer, Gabriele; Brähler, Elmar; Stöbel-Richter, Yve

    2015-01-01

    Since the percentage of single adults is steadily increasing, the reasons for this development have become a matter of growing interest. Hereby, an individual’s attachment style may have a connection to the partnership status. In the following analysis, attachment style, gender, age, education, and income were compared in regard to the partnership status. Furthermore, an analysis of variance was computed to compare the attachment style within different groups. In 2012, a sample of 1,676 repre...

  13. Attachments

    International Nuclear Information System (INIS)

    In this attachment to the Annual report 1999 of the Nuclear Regulatory Authority of the Slovak Republic (UJD) the economic and personnel data of the UJD, used abbreviations, as well as the International nuclear event scales - INES are presented. Professional level of staff of the UJD is influenced by the education structure of its staff, when nearly 75% of the total number of staff has a university degree. A of 31.12.1999 there were 79 employees as average calculated number. Financing of the regulator in 1999 was mainly provided from the state budget, which represented 96% of all expenditures. The total volume of expenditures for UJD activity funded from the state budget achieved as of 31.12.1999 Slovak crowns (SK) 67 067 thousands. In the main category of expenditures an amount of SK 63 499 thous. was used for current activities, and the difference of SK 3 587 thous. was used for raising capital assets. Significant increase expenditures in the evaluated year compared to the 1998 was caused by a special purpose payment made by the Slovakia into the Fund for reconstruction of the Chernobyl cover (SK 19 996 thous.) funded through the budget chapter of the regulator. In the structure of current expenditures the highest share is taken by current transfers to abroad in total of SK 22 543 thous., i.e. contribution to reconstruction of Chernobyl cover made to the EBRD and contributions to the Fund of Technical Co-operation of the IAEA. For procurement of goods and services an amount of SK 19 814 thous. was spent, of which SK 7 054 thous. was used for funding science and technology tasks which were contracted out. The decision-making process in performing state supervision forced UJD to contact out various expert opinions and studies, for which UJD paid SK 2 058 thous. in total. Other expenditures in a volume of SK 10 702 thous. represent travel expenses, goods and services for UJD, rent for offices and other inevitable expenses. Salaries of staff represented SK 15 953

  14. Visualization of intermittent blobby plasma transport in attached and detached plasmas of the NAGDIS-II

    International Nuclear Information System (INIS)

    We investigated the intermittent convective plasma transport in a attached and/or detached plasma condition of the linear divertor plasma simulator, NAGDIS-II. Images taken by a fast-imaging camera clearly show that in attached plasmas, blobs are peeled off the bulk plasma, and propagate outward with an azimuthal motion. In detached plasmas, plasma turbulence observed near the plasma recombining region drives strong intermittent radial plasma transport, which could broaden the radial density profile. (author)

  15. Is It Attachment Style or Socio-Demography: Singlehood in a Representative Sample

    Science.gov (United States)

    Petrowski, Katja; Schurig, Susan; Schmutzer, Gabriele; Brähler, Elmar; Stöbel-Richter, Yve

    2015-01-01

    Since the percentage of single adults is steadily increasing, the reasons for this development have become a matter of growing interest. Hereby, an individual’s attachment style may have a connection to the partnership status. In the following analysis, attachment style, gender, age, education, and income were compared in regard to the partnership status. Furthermore, an analysis of variance was computed to compare the attachment style within different groups. In 2012, a sample of 1,676 representative participants was used. The participants were aged 18 to 60 (M = 41.0, SD = 12.3); 54% of the sample were female, and 40% were single. Attachment-related attitudes were assessed with the German version of the adult attachment scale (AAS). Single adult males did not show a more anxious attachment style than single adult females or females in relationships. Younger, i.e., 18 to 30 years old, paired individuals showed greater attachment anxiety than single individuals, whereby single individuals between the ages of 31 to 45 showed greater attachment anxiety than individuals in relationships. In addition, single individuals more frequently had obtained their high school diploma in contrast to individuals in relationships. Concerning attachment style, the individuals who had not completed their high school diploma showed less faith in others independent of singlehood or being in a relationship. Concerning age, older single individuals, i.e., 46 to 60 years, felt less comfortable in respect to closeness and showed less faith in others compared to paired individuals. Logistic regression showed that individuals were not single if they did not mind depending on others, showed high attachment anxiety, were older, and had lower education. An income below € 2000/month was linked to a nearly 13-fold increase of likelihood of being single. In sum, the attachment style had a differential age-dependent association to singlehood versus being in a relationship. Education played also

  16. Parental PTSD, adverse parenting and child attachment in a refugee sample.

    Science.gov (United States)

    van Ee, Elisa; Kleber, Rolf J; Jongmans, Marian J; Mooren, Trudy T M; Out, Dorothee

    2016-01-01

    In contrast with traumatic experiences, there is a dearth of studies on the link between trauma symptoms, disconnected (frightened, threatening and dissociative) parenting behavior, extremely insensitive parenting behavior and child attachment. This study extends previous work on the impact of posttraumatic stress disorder (PTSD) on families by studying the unique contribution of disconnected and extremely insensitive parenting behavior on child attachment in a highly traumatized sample of 68 asylum seekers and refugees and their children (18-42 months). The results show that parental symptoms of PTSD are directly related to children's insecure attachment and disorganized attachment. The greatest proportion of the risk could be attributed to factors related to the dyad and not the family. A mediation effect of adverse parenting behavior was not confirmed. On the one hand the results indicate the need for an effective treatment of PTSD symptomatology while on the other hand the results indicate the need for clinical attention to insecure attachment relationships. PMID:26982876

  17. Spectroscopy of PTCDA attached to rare gas samples: clusters vs. bulk matrices. I. Absorption spectroscopy

    OpenAIRE

    Dvorak, M.; Müller, M; Knoblauch, T.; Bünermann, O.; Rydlo, A.; Minniberger, S.; Harbich, W.; Stienkemeier, F.

    2012-01-01

    The interaction between PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) and rare gas or para-hydrogen samples is studied by means of laser-induced fluorescence excitation spectroscopy. The comparison between spectra of PTCDA embedded in a neon matrix and spectra attached to large neon clusters shows that these large organic molecules reside on the surface of the clusters when doped by the pick-up technique. PTCDA molecules can adopt different conformations when attached to argon, neon a...

  18. The contribution of social rank and attachment theory to depression in a non clinical sample of adolescents

    OpenAIRE

    Puissant, Sylvia Pinna; Gauthier, Jean-Marie; Van Oirbeek, R. KUL

    2011-01-01

    This study explores the relative contribution of the overall quality of attachment to the mother, to the father and to peers (Inventory of Parent and Peer Attachment scales), the style of attachment towards peers (Attachment Questionnaire for Children scale), the social rank variables (submissive behavior and social comparison), and sex and age variables in predicting the depression score (Center of Epidemiological Studies Depression Scale) on a non-psychiatric sample of 13-18 year old adoles...

  19. Mentalizing Language Development in a Longitudinal Attachment Sample: Implications for Alexithymia

    OpenAIRE

    Lemche, Erwin; Klann-Delius, Gisela; Koch, Rainer; Joraschky, Peter

    2014-01-01

    Background: The construct of alexithymia implies a deficit in symbolization for emotional, somatic, and mental states. However, the etiologic factors for alexithymia have not yet been fully elucidated. The present study investigated the use of mentalizing language, i.e. the utterance of internal states, from a developmental perspective according to attachment organization and disorganization. Methods: A longitudinal design across 4 time points was applied to a volunteer sample of 42 children....

  20. Spectroscopy of PTCDA attached to rare gas samples: clusters vs. bulk matrices. I. Absorption spectroscopy

    CERN Document Server

    Dvorak, M; Knoblauch, T; Bünermann, O; Rydlo, A; Minniberger, S; Harbich, W; Stienkemeier, F

    2012-01-01

    The interaction between PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) and rare gas or para-hydrogen samples is studied by means of laser-induced fluorescence excitation spectroscopy. The comparison between spectra of PTCDA embedded in a neon matrix and spectra attached to large neon clusters shows that these large organic molecules reside on the surface of the clusters when doped by the pick-up technique. PTCDA molecules can adopt different conformations when attached to argon, neon and para-hydrogen clusters which implies that the surface of such clusters has a well-defined structure and has not liquid or fluxional properties. Moreover, a precise analysis of the doping process of these clusters reveals that the mobility of large molecules on the cluster surface is quenched, preventing agglomeration and complex formation.

  1. Attachment from Infancy to Early Adulthood in a High-Risk Sample: Continuity, Discontinuity, and Their Correlates.

    Science.gov (United States)

    Weinfield, Nancy S.; Sroufe, L. Alan; Egeland, Byron

    2000-01-01

    Explored the stability of attachment security and representations from infancy to early adulthood in a high risk sample. Found no evidence for significant continuity between infant and adult attachment, but rather a lawful discontinuity, with many participants transitioning to insecurity. Continuous and discontinuous groups were differentiated on…

  2. Sample size: from formulae to concepts - II

    Directory of Open Access Journals (Sweden)

    Rakesh R. Pathak

    2013-02-01

    Full Text Available Sample size formulae need some input data or to say it otherwise we need some parameters to calculate sample size. This second part on the formula explanation gives ideas of Z, population size, precision of error, standard deviation, contingency etc which influence sample size. [Int J Basic Clin Pharmacol 2013; 2(1.000: 94-95

  3. Comparison of the FRM-II HEU design with an alternative LEU design. Attachment

    International Nuclear Information System (INIS)

    After presentation of the foregoing paper by Dr. Nelson Hanan of Argonne National Laboratory (ANL) proposing an alternative LEU core with one fuel ring and a power level of 33 MW, a presentation was made by Dr. Klaus Boning of the Technical University of Munich comparing the FRM-II HEU design with an LEU design by Tlm that had two fuel rings and a power level of 40 MW. Dr. Boning raised the following issues concerning the use of LEU fuel in FRM-H reactor designs: (1) qualification of HEU and LEU silicide fuels, (2) gamma heating in the heavy water reflector, (3) the radiological consequences of hypothetical accidents, and (4) cost and schedule. These issues are addressed in this Attachment. In his presentation, Dr. Hanan mentioned that ANL was also investigating other LEU designs. This work led to a second alternative LEU design that has the same neutron flux performance (8 x 1014 n/cm2/s peak neutron flux in the reflector) and the same fuel lifetime (50 full power days) as the HEU design, but uses LEU silicide fuel with a uranium density of only 4.5 g/cm3. This design was achieved by using a fuel plate that has a fuel meat thickness of 0.76 mm, a cladding thickness of 0.38 mm, and a water channel gap of 2.2 mm. A comparison is shown of the main characteristics of this second alternative LEU design with those of the FRM-II HEU design. The ANL core again has one fuel ring with the same dimensions. With this LEU design, a two stage process is no longer necessary because LEU silicide fuel with a uranium density of 4.5 g/cm3 is fully qualified, licensable, and available now for use in a high flux reactor such as the FRM-II

  4. Inhibition of Neisseria gonorrhoeae attachment to HeLa cells with monoclonal antibody directed against a protein II.

    OpenAIRE

    Sugasawara, R J; Cannon, J G; Black, W J; Nachamkin, I; Sweet, R L; Brooks, G F

    1983-01-01

    This study showed that a protein II (PII) of Neisseria gonorrhoeae FA1090 appeared to act as a mediator of attachment to HeLa cells. Two colony variants of FA1090 were selected. Both gonococcal variants were nonpiliated, but one contained a PII and the other did not. A monoclonal antibody (1090-10.1), which was directed against the PII, inhibited the apparent PII-mediated attachment to HeLa cells. Antibodies produced from clone 1035-4, which had no PII specificity, did not inhibit the attachm...

  5. Is it attachment style or socio-demography: Singlehood in a representative sample

    OpenAIRE

    Katja ePetrowski; Susan eSchurig; Gabriele eSchmutzer; Elmar eBrähler; Yve eStöbel-Richter

    2015-01-01

    Since the percentage of single adults is steadily increasing, the reasons for this development have become a matter of growing interest. Hereby, an individual’s attachment style has come under close scrutiny in the context of its possible association to the partnership status.In the current study, a comparison of an individual’s attachment style, gender, age, education, and income was carried out in regard to the partnership status. Furthermore, an analysis of variance was computed to compare...

  6. Effectiveness of attachment based STEEP™ intervention in a German high-risk sample.

    Science.gov (United States)

    Suess, G J; Bohlen, U; Carlson, E A; Spangler, G; Frumentia Maier, M

    2016-10-01

    STEEP(TM) was one of the first attachment-based early intervention programs. The program applied findings from the Minnesota Longitudinal Study on Risk and Adaptation to the development of a supportive program for young high-risk mothers and their infants. STEEP's effectiveness was evaluated first in a randomized controlled study launched in 1987. The study showed effects of the one-year intervention on important individual and parenting variables, but not on quality of mother-infant attachment. In the current German study with young mothers at risk for abuse and neglect, a two-year adaptation of STEEP was evaluated within a quasi-experimental design. STEEP mother-infant pairs (N = 78) were compared with pairs who received standard services of the German Child Welfare System (GCWS, N = 29). Compared with GCWS pairs, significantly more mother-infant pairs in the intervention group showed secure attachment patterns in Ainsworth´s Strange Situation when the infants were 12 months of age. At the end of the intervention (infant age = 24 month), attachment security scores derived from Waters' Attachment Q-Sort were in the predicted direction and showed a medium effect size, but did not reach criteria of statistical significance. At both time points, the STEEP group showed significantly fewer signs of attachment disorganization than the comparison group. PMID:27035267

  7. Another Look Inside the Gap: Ecological Contributions to the Transmission of Attachment in a Sample of Adolescent Mother-Infant Dyads

    Science.gov (United States)

    Tarabulsy, George M.; Bernier, Annie; Provost, Marc A.; Maranda, Johanne; Larose, Simon; Moss, Ellen; Larose, Marie; Tessier, Rejean

    2005-01-01

    Ecological contributions to attachment transmission were studied in a sample of 64 adolescent mother-infant dyads. Maternal sensitivity was assessed when infants were 6 and 10 months old, and infant security was assessed at 15 and 18 months. Maternal attachment state of mind was measured with the Adult Attachment Interview (AAI) after the 1st…

  8. Adult attachment, intimacy and psychological distress in a clinical and community sample

    NARCIS (Netherlands)

    Pielage, SB; Luteijn, F; Arrindell, WA

    2005-01-01

    Attachment theory predicts that early experiences with caregivers affect the quality of individuals' later (romantic) relationships and, consequently, their mental health. The present study examined the role of intimacy in the current romantic relationship as a possible mediator of the relationship

  9. Attachment, Obsessive Beliefs and Emotion Dysregulation in Obsessive Compulsive Disorder: A comparison with Normal and Clinical Sample

    Directory of Open Access Journals (Sweden)

    Sevginar Vatan

    2016-06-01

    Full Text Available Objective: The present study aimed at investigating the differences between nonclinical sample and clinical sample (OCD patients in attachment, obsessive beliefs and emotion regulation in Turkish sample. Methods: For these purposes 224 non clinical participants and 101 clinical OCD participants completed questionnaires related to research variables. Experience in Close Relationship Scale (Fraley, Waller & Brennan, 2000 to evaluate attachment, Obsessive Belief Questionnaire to evaluate obsessive beliefs and Difficulties of Emotion Regulation Scale (Gratz & Roemer, 2004 to evaluate emotion regulation abilities were used in this study. Results: A series of t-test for independent samples analyses were done. Findings of the analyses revealed that there was significant differences between two groups in anxiety level of attachment, but not in avoidance level. Also there were significant differences between two groups in all obsessive beliefs subscales such as responsibility and threat perception, perfectionism and need of certainty, the importance of thoughts and control. From emotional regulation perspective there were significant differences in non-acceptance of emotional response, difficulties in engaging goal-directed behavior, impulse control difficulties during emotional distress, limited access to emotional regulation strategies. However there was not significant differences between two groups in clarity about emotions and awareness of emotional arousal. Conclusion: To sum up according to results of this study attachment and obsessive beliefs follow the same pattern with the results in the literature. Moreover the difficulties of emotion regulation abilities thought to improve the knowledge about OCD. Because this part believed not to have enough findings in the OCD literature. The results were discussed in the light of the related literature and dependent recommendations to the area were given.

  10. Robot welding of spacer/support attachments for Heysham II/Torness steam generation unit platens

    International Nuclear Information System (INIS)

    Boiler support systems, based on spacer-tube attachments, at two United Kingdom power stations have been successfully welded using a non-adaptive robotic system, a world first in robotic welding in boiler platen fabrication. Process monitoring, and precision wire feed equipment for accurate synchronous pulsing were developed with contributions from The Welding Institute. Positional error was compensated for using off-line programming with vision sensing. (UK)

  11. EMP Attachment 1 DOE-SC PNNL Site Sampling and Analysis Plan

    Energy Technology Data Exchange (ETDEWEB)

    Meier, Kirsten M.

    2011-11-10

    This Sampling and Analysis Plan (SAP) is written for the radiological environmental air surveillance program for the DOE-SC PNNL Site, Richland Washington. It provides the requirements for planning sampling events, and the requirements imposed on the analytical laboratory analyzing the air samples. The actual air sampling process is in procedure EPRP-AIR-029. The rationale for analyte selection, media, and sampling site location has been vetted through the data quality objectives (DQO) process (Barnett et al. 2010). The results from the DQO process have been reviewed and approved by the Washington State Department of Health. The DQO process (Barnett et al. 2010) identified seven specific radionuclides for analysis along with the need for gross alpha and gross beta radiological analyses. The analytes are {sup 241}Am, {sup 243}Am, {sup 244}Cm, {sup 60}Co, {sup 238}Pu, {sup 239}Pu, and {sup 233}U. The report also determined that air samples for particulates are the only sample matrix required for the monitoring program. These samples are collected on 47-mm glass-fiber filters.

  12. A sample lesson plan for the course English Composition II

    OpenAIRE

    Córdoba Cubillo, Patricia

    2005-01-01

    The goal of this article is to present a lesson plan and a series of sample tasks to help the instructors from the course English Composition II, at the School of Modern Languages from the University of Costa Rica, to guide students write an essay integrating the four skills: listening, speaking, reading, and writing. These activities will be a source of comprehensible input for the learners that will hopefully result in a good writing piece. El objetivo de este artículo es presentar un plan...

  13. Validation of KENOREST with LWR-PROTEUS phase II samples

    International Nuclear Information System (INIS)

    In order to broaden the validation basis of the reactivity and nuclide inventory code KENOREST two samples of the LWR-PROTEUS phase II program have been calculated and compared to the experimental results. In general most nuclides are reproduced very well and agree within about ten percent with the experiment. Some already known problems, the overprediction of metallic fission products and the underprediction of the higher curium isotopes, have been confirmed. One of the largest uncertainties in the calculation was the burnup of the samples due to differences between a core simulation of the fuel vendor and the burnup determined from the measured values of the burnup indicator Nd-148. Two different models taking into account the environment for a peripheral fuel rod have been studied. The more detailed model included the three direct neighbor fuel assemblies depleted along with the fuel rod of interest. The influence on the results has been found to be very small. Compared to the uncertainties from the burnup, this effect can be considered negligible. The reason for the low influence was basically that the spectrum did not get considerably harder with increasing burnup beyond about 20GWd/tHM. Since the sample reached burnups far beyond that value, an effect could not be seen. In the near future an update of the used libraries is planned and it will be very interesting to study the effect on the results, especially for Curium. (orig.)

  14. A sample lesson plan for the course English Composition II

    Directory of Open Access Journals (Sweden)

    Córdoba Cubillo, Patricia

    2005-03-01

    Full Text Available The goal of this article is to present a lesson plan and a series of sample tasks to help the instructors from the course English Composition II, at the School of Modern Languages from the University of Costa Rica, to guide students write an essay integrating the four skills: listening, speaking, reading, and writing. These activities will be a source of comprehensible input for the learners that will hopefully result in a good writing piece. El objetivo de este artículo es presentar un plan de lección y una serie de actividades que le ayudarán a los y las instructoras del curso Composición Inglesa II de la Escuela de Lenguas Modernas de la Universidad de Costa Rica a guiar a sus estudiantes a escribir un ensayo integrando las cuatro macro-destrezas, a saber comprensión auditiva, conversación, lectura y escritura. Mediante estas actividades se espera que los estudiantes elaboren un ensayo de calidad.

  15. 40 CFR Appendix II to Part 600 - Sample Fuel Economy Calculations

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 29 2010-07-01 2010-07-01 false Sample Fuel Economy Calculations II... FUEL ECONOMY AND CARBON-RELATED EXHAUST EMISSIONS OF MOTOR VEHICLES Pt. 600, App. II Appendix II to Part 600—Sample Fuel Economy Calculations (a) This sample fuel economy calculation is applicable...

  16. Paternal Attachment, Parenting Beliefs and Children's Attachment

    Science.gov (United States)

    Howard, Kimberly S.

    2010-01-01

    Relationships between fathers' romantic attachment style, parenting beliefs and father-child attachment security and dependence were examined in a diverse sample of 72 fathers of young children. Paternal romantic attachment style was coded based on fathers' endorsement of a particular style represented in the Hazan and Shaver Three-Category…

  17. Spectroscopy of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) attached to rare gas samples: Clusters vs. bulk matrices. I. Absorption spectroscopy

    OpenAIRE

    Dvorak, Matthieu; Mueller, Markus; Knoblauch, Tobias; Buenermann, Oliver; Rydlo, Alexandre; Minniberger, Stefan; Harbich, Wolfgang; Stienkemeier, Frank

    2012-01-01

    The interaction between 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) and rare gas or para-hydrogen samples is studied by means of laser-induced fluorescence excitation spectroscopy. The comparison between spectra of PTCDA embedded in a neon matrix and spectra attached to large neon clusters shows that these large organic molecules reside on the surface of the clusters when doped by the pick-up technique. PTCDA molecules can adopt different conformations when attached to argon, neon...

  18. Investigation of the relationship between therapist and client attachment styles and perceptions of therapeutic alliance in a sample of inpatients with psychosis

    OpenAIRE

    Day, Hayley

    2012-01-01

    The current study investigated the relationship between therapist and client attachment styles and perceptions of therapeutic alliance in a sample of inpatients with psychosis. A review of the literature found that attachment theory can provide understanding regarding the behaviour of clients with psychosis in therapeutic relationships, especially in inpatient settings. Working alliance can be measured as a representation of the therapeutic relationship and both client and therapist attachmen...

  19. An investigation into the relationship between attachment, gender and recovery from psychosis in a stable community-based sample.

    Science.gov (United States)

    Mulligan, Alison; Lavender, Tony

    2010-01-01

    The current study sought to investigate how men and women who experience psychosis represent early bonding experiences, current attachment style and the recovery style adopted. Seventy-three participants (18 women and 55 men) with a diagnosis of psychosis completed the Parental Bonding Instrument, the Attachment Style Questionnaire and the Recovery Style Questionnaire. Differences were observed between men and women in relation to the nature of insecure attachment styles demonstrated. Significant associations were found between perceptions of parents as uncaring and insecurity in adult attachment style. A greater number of significant associations were found between recollections of early bonding and attachment styles amongst women than men. Men and women did not differ significantly in terms of the recovery style adopted, nor were significant differences found in relation to perceptions of early bonding experiences. Methodological and theoretical issues were considered and directions for future research were suggested. PMID:19937718

  20. Complexometric Determination of Zinc (II in Pharmaceutical Samples Using Hydroxytriazenes

    Directory of Open Access Journals (Sweden)

    Khanam R.

    2010-01-01

    Full Text Available The present paper describes complexometric determination of Zn (II using three hydroxytriazenes as metallochromic indicators in three medicines- Zivinal-CD, Becozine, and Vi - Syneral-Z. The hydroxytriazenes used were 3-hydroxy-3-phenyl-1-p-carboxyphenyltriazene (HPpCPT, 3-hydroxy-3-phenyl-1-o-chlorophenyltriazene (HPoCPT, 3-hydroxy-3-p-tolyl-1-p-sulphonamidophenyltriazene (HpTpSPT, respectively. Determination of zinc (II was done by back titration method.

  1. Mind-Mindedness as a Multidimensional Construct: Appropriate and Nonattuned Mind-Related Comments Independently Predict Infant-Mother Attachment in a Socially Diverse Sample

    Science.gov (United States)

    Meins, Elizabeth; Fernyhough, Charles; de Rosnay, Marc; Arnott, Bronia; Leekam, Susan R.; Turner, Michelle

    2012-01-01

    In a socially diverse sample of 206 infant-mother pairs, we investigated predictors of infants' attachment security at 15 months, with a particular emphasis on mothers' tendency to comment appropriately or in a non-attuned manner on their 8-month-olds' internal states (so-called mind-mindedness). Multinomial logistic regression analyses showed…

  2. Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples

    CERN Document Server

    Betoule, M; Guy, J; Mosher, J; Hardin, D; Biswas, R; Astier, P; El-Hage, P; Konig, M; Kuhlmann, S; Marriner, J; Pain, R; Regnault, N; Balland, C; Bassett, B A; Brown, P J; Campbell, H; Carlberg, R G; Cellier-Holzem, F; Cinabro, D; Conley, A; D'Andrea, C B; DePoy, D L; Doi, M; Ellis, R S; Fabbro, S; Filippenko, A V; Foley, R J; Frieman, J A; Fouchez, D; Galbany, L; Goobar, A; Gupta, R R; Hill, G J; Hlozek, R; Hogan, C J; Hook, I M; Howell, D A; Jha, S W; Guillou, L Le; Leloudas, G; Lidman, C; Marshall, J L; Möller, A; Mourão, A M; Neveu, J; Nichol, R; Olmstead, M D; Palanque-Delabrouille, N; Perlmutter, S; Prieto, J L; Pritchet, C J; Richmond, M; Riess, A G; Ruhlmann-Kleider, V; Sako, M; Schahmaneche, K; Schneider, D P; Smith, M; Sollerman, J; Sullivan, M; Walton, N A; Wheeler, C J

    2014-01-01

    We present cosmological constraints from a joint analysis of type Ia supernova (SN Ia) observations obtained by the SDSS-II and SNLS collaborations. The data set includes several low-redshift samples (z<0.1), all 3 seasons from the SDSS-II (0.05 < z < 0.4), and 3 years from SNLS (0.2

  3. Spectroscopy of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) attached to rare gas samples: Clusters vs. bulk matrices. I. Absorption spectroscopy

    Science.gov (United States)

    Dvorak, Matthieu; Müller, Markus; Knoblauch, Tobias; Bünermann, Oliver; Rydlo, Alexandre; Minniberger, Stefan; Harbich, Wolfgang; Stienkemeier, Frank

    2012-10-01

    The interaction between 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) and rare gas or para-hydrogen samples is studied by means of laser-induced fluorescence excitation spectroscopy. The comparison between spectra of PTCDA embedded in a neon matrix and spectra attached to large neon clusters shows that these large organic molecules reside on the surface of the clusters when doped by the pick-up technique. PTCDA molecules can adopt different conformations when attached to argon, neon, and para-hydrogen clusters which implies that the surface of such clusters has a well-defined structure without liquid or fluxional properties. Moreover, a precise analysis of the doping process of these clusters reveals that the mobility of large molecules on the cluster surface is quenched, preventing agglomeration and complex formation.

  4. Innovative alpha-radioactivity monitor for clearance level inspection based on ionized air transportation technology (1). Comparison with mass spectral analysis using uranium-attached samples

    International Nuclear Information System (INIS)

    We have been developing an alpha-radioactivity monitor based on ionized air transportation technology (alpha clearance monitor) for efficiently performing clearance level inspection of massive amounts of uranium-contaminated waste. This paper is one of a series related to a method for quantitatively evaluating alpha radioactivity from a measured ion current value. Using a prototype alpha clearance monitor, we measured alpha radioactivities of uranium-attached components used in back-end facilities of the nuclear fuel cycle (uranium-attached samples). We compared the measured radioactivities with reference radioactivities by assaying the samples with an inductively coupled plasma mass spectrometer and the radioactivities measured with a scintillation survey meter. The radioactivities of curved plate samples measured with the prototype monitor were highly linear with respect to the reference radioactivities (a residual standard deviation of 8%). Absolute values of the radioactivities obtained with the prototype monitor and with the survey meter were about 40% and 50% smaller than the reference radioactivities, respectively. Measurements of complex-shaped samples indicated that, to measure diverse-shaped waste, it was necessary to classify the waste by shape and determine conversion coefficients corresponding to each group in advance, experimentally and theoretically. (author)

  5. Attachment and Early Maltreatment.

    Science.gov (United States)

    Egeland, Byron; Sroufe, L. Alan

    1981-01-01

    Attachment outcomes of 31 maltreatment cases (involving extreme neglect or abuse), selected from a total poverty sample of 267 high-risk mothers and their children, were compared to those of a subsample of 33 cases with a history of excellent care. Attachment was assessed when infants were 12 and 18 months old. (Author/MP)

  6. The effects of parental sensitivity and involvement in caregiving on mother-infant and father-infant attachment in a Portuguese sample.

    Science.gov (United States)

    Fuertes, Marina; Faria, Anabela; Beeghly, Marjorie; Lopes-Dos-Santos, Pedro

    2016-02-01

    In the present longitudinal study, we investigated attachment quality in Portuguese mother-infant and in father-infant dyads, and evaluated whether attachment quality was related to parental sensitivity during parent-infant social interaction or to the amount of time each parent spent with the infant during play and in routine caregiving activities (e.g., feeding, bathing, play). The sample consisted of 82 healthy full-term infants (30 girls, 53 boys, 48 first born), and their mothers and fathers from mostly middle-class households. To assess parental sensitivity, mothers and fathers were independently observed during free play interactions with their infants when infants were 9 and 15 months old. The videotaped interactions were scored by masked coders using the Crittenden's CARE-Index. When infants were 12 and 18 months old, mother-infant and father-infant dyads were videotaped during an adaptation of Ainsworth's Strange Situation. Parents also described their level of involvement in infant caregiving activities using a Portuguese version of the McBride and Mills Parent Responsibility Scale. Mothers were rated as being more sensitive than fathers during parent-infant free play at both 9 and 15 months. There also was a higher prevalence of secure attachment in mother-infant versus father-infant dyads at both 12 and 18 months. Attachment security was predicted by the amount of time mothers and fathers were involved in caregiving and play with the infant, and with parents' behavior during parent-infant free play. (PsycINFO Database Record PMID:26437145

  7. Minutes of the 28th Annual Plutonium Sample Exchange Meeting. Part II: metal sample exchange

    International Nuclear Information System (INIS)

    Contents of this publication include the following list of participating laboratories; agenda; attendees; minutes of October 25 and 26 meeting; and handout materials supplied by speakers. The handout materials cover the following: statistics and reporting; plutonium - chemical assay 100% minus impurities; americium neptunium, uranium, carbon and iron data; emission spectroscopy data; plutonium metal sample exchange; the calorimetry sample exchange; chlorine determination in plutonium metal using phyrohydrolysis; spectrophotometric determination of 238-plutonium in oxide; plutonium measurement capabilities at the Savannah River Plant; and robotics in radiochemical laboratory

  8. Minutes of the 28th Annual Plutonium Sample Exchange Meeting. Part II: metal sample exchange

    Energy Technology Data Exchange (ETDEWEB)

    1984-01-01

    Contents of this publication include the following list of participating laboratories; agenda; attendees; minutes of October 25 and 26 meeting; and handout materials supplied by speakers. The handout materials cover the following: statistics and reporting; plutonium - chemical assay 100% minus impurities; americium neptunium, uranium, carbon and iron data; emission spectroscopy data; plutonium metal sample exchange; the calorimetry sample exchange; chlorine determination in plutonium metal using phyrohydrolysis; spectrophotometric determination of 238-plutonium in oxide; plutonium measurement capabilities at the Savannah River Plant; and robotics in radiochemical laboratory.

  9. Sample problems for the novice user of the AMPX-II system

    International Nuclear Information System (INIS)

    Contents of the IBM version of the APMX system distributed by the Radiation Shielding Information Center (APMX-II) are described. Sample problems which demonstrate the procedure for implementing AMPX-II modules to generate point cross sections; generate multigroup neutron, photon production, and photon interaction cross sections for various transport codes; collapse multigroup cross sections; check, edit, and punch multigroup cross sections; and execute a one-dimensional discrete ordinates transport calculation are detailed. 25 figures, 9 tables

  10. In Sample of L’Illustration Magazine, Militarism in World War II Period Periodical Advertising

    OpenAIRE

    BOYRAZ, Burak

    2015-01-01

    World War II (1939-1945) which is one of the most bloody and deathful wars of history is also the period militarism was involved in daily life most intensively. In this study named; In Sample of L’Illustration Magazine, Militarism in World War II Period Periodical Advertising, said characteristics of militarism has been, within the scope of a literature review, scrutinized over periodicals and periodical advertising. Accordingly, in the first section of the study where L’Illustration, one of ...

  11. Operable Unit 3-13, Group 3, Other Surface Soils (Phase II) Field Sampling Plan

    Energy Technology Data Exchange (ETDEWEB)

    G. L. Schwendiman

    2006-07-27

    This Field Sampling Plan describes the Operable Unit 3-13, Group 3, Other Surface Soils, Phase II remediation field sampling activities to be performed at the Idaho Nuclear Technology and Engineering Center located within the Idaho National Laboratory Site. Sampling activities described in this plan support characterization sampling of new sites, real-time soil spectroscopy during excavation, and confirmation sampling that verifies that the remedial action objectives and remediation goals presented in the Final Record of Decision for Idaho Nuclear Technology and Engineering Center, Operable Unit 3-13 have been met.

  12. Selective solid-phase extraction of Ni(II) by an ion-imprinted polymer from water samples

    Energy Technology Data Exchange (ETDEWEB)

    Saraji, Mohammad, E-mail: saraji@cc.iut.ac.ir [Department of Chemistry, Isfahan University of Technology, Isfahan 84154-83111 (Iran, Islamic Republic of); Yousefi, Hamideh [Department of Chemistry, Isfahan University of Technology, Isfahan 84154-83111 (Iran, Islamic Republic of)

    2009-08-15

    A new ion-imprinted polymer (IIP) material was synthesized by copolymerization of 4-vinylpyridine as monomer, ethyleneglycoldimethacrylate as crosslinking agent and 2,2'-azobis-sobutyronitrile as initiator in the presence of Ni-dithizone complex. The IIP was used as sorbent in a solid-phase extraction column. The effects of sampling volume, elution conditions, sample pH and sample flow rate on the extraction of Ni ions form water samples were studied. The maximum adsorption capacity and the relative selectivity coefficients of imprinted polymer for Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were calculated. Compared with non-imprinted polymer particles, the IIP had higher selectivity for Ni(II). The relative selectivity factor ({alpha}{sub r}) values of Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were 21.6, 54.3, and 22.7, respectively, which are greater than 1. The relative standard deviation of the five replicate determinations of Ni(II) was 3.4%. The detection limit for 150 mL of sample was 1.6 {mu}g L{sup -1} using flame atomic absorption spectrometry. The developed method was successfully applied to the determination of trace nickel in water samples with satisfactory results.

  13. Selective solid-phase extraction of Ni(II) by an ion-imprinted polymer from water samples

    International Nuclear Information System (INIS)

    A new ion-imprinted polymer (IIP) material was synthesized by copolymerization of 4-vinylpyridine as monomer, ethyleneglycoldimethacrylate as crosslinking agent and 2,2'-azobis-sobutyronitrile as initiator in the presence of Ni-dithizone complex. The IIP was used as sorbent in a solid-phase extraction column. The effects of sampling volume, elution conditions, sample pH and sample flow rate on the extraction of Ni ions form water samples were studied. The maximum adsorption capacity and the relative selectivity coefficients of imprinted polymer for Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were calculated. Compared with non-imprinted polymer particles, the IIP had higher selectivity for Ni(II). The relative selectivity factor (αr) values of Ni(II)/Co(II), Ni(II)/Cu(II) and Ni(II)/Cd(II) were 21.6, 54.3, and 22.7, respectively, which are greater than 1. The relative standard deviation of the five replicate determinations of Ni(II) was 3.4%. The detection limit for 150 mL of sample was 1.6 μg L-1 using flame atomic absorption spectrometry. The developed method was successfully applied to the determination of trace nickel in water samples with satisfactory results.

  14. Product Attachment

    OpenAIRE

    Mugge, R.

    2007-01-01

    The topic of this doctoral research is the concept of product attachment for ordinary consumer durables. Product attachment is defined as the strength of the emotional bond a consumer experiences with a specific product. Specifically, the research investigated how this bond develops over time and the relationship between product attachment and product lifetime. In addition, we studied which determinants may affect the strength of the emotional bond with products and uncovered the role of the ...

  15. Spectrophotometric determination of Sudan Blue II in environmental samples after dispersive liquid-liquid microextraction

    Directory of Open Access Journals (Sweden)

    Yunus Emre Unsal

    2014-01-01

    Full Text Available A dispersive liquid-liquid microextraction procedure coupled to spectrophotometry is described for the determination of the trace levels of Sudan Blue II. Analytical parameters, such as pH, volume of extraction solvent (carbon tetrachloride, volume of dispersant (ethanol, volume of sample, and extraction time, were optimized. Matrix effects were also investigated. Preconcentration factor was found to be 200. Detection limit and relative standard deviation (RSD were 0.55 µg L-1 and 3.9%, respectively. The procedure was successfully used for the determination of trace levels of Sudan Blue II in food, ink, antifreeze, and industrial waste-water samples.

  16. X-ray fluorescence in Member States: Austria and Sri Lanka. A new attachment module for secondary target excitation with sample changer and vacuum chamber

    International Nuclear Information System (INIS)

    A new secondary target attachment vacuum chamber was developed, designed and constructed at the Atomic Institute of Vienna Technical University X ray Laboratory and installed at the Atomic Energy Authorities, Colombo, Sri Lanka. The prerequisites were that the new system had to fit physically next to the Wobistrax TXRF spectrometer and to use the same existing X ray tube and an existing uplooking LN2 cooled Si(Li) detector. This new spectrometer replaces a simple secondary target system previously installed. The new system offers a 10 position sample changer integrated in a vacuum chamber. The secondary targets are exchangeable, and Mo, Zr, Ti, Al, KBr and Teflon as Barkla polarizer are available. The system is designed for the emission-transmission method for quantification but can also be used for air filter samples where the thin film model for the quantification is applicable

  17. The IRAS bright galaxy sample. II - The sample and luminosity function

    Science.gov (United States)

    Soifer, B. T.; Sanders, D. B.; Neugebauer, G.; Madore, B. F.; Danielson, G. E.

    1987-01-01

    A statistically complete sample of 324 of the brightest infrared galaxies discovered at 60 microns in the IRAS all-sky survey is described. The results show that far-infrared emission is a significant luminosity component in the local universe, representing 25 percent of the luminosity emitted by stars in the same volume. Above 10 to the 11th solar luminosities, the infrared luminous galaxies are the dominant population of objects in the universe, being as numerous as the Seyfert galaxies and more numerous than quasars at higher luminosities. The infrared luminosity appears to be independent of the optical luminosity of galaxies. Most infrared bright galaxies appear to require much of the interstellar matter to be contributing to the observed infrared luminosity. Approximately 60-80 percent of the far-infrared luminosity of the local universe can be attributed, directly or indirectly, to recent or ongoing star formation.

  18. A versatile and highly sensitive probe for Hg(II), Pb(II) and Cd(II) detection individually and totally in water samples.

    Science.gov (United States)

    Zhou, Yu; Tian, Xiang-Li; Li, Yan-Song; Zhang, Yuan-Yuan; Yang, Li; Zhang, Jun-Hui; Wang, Xin-Rui; Lu, Shi-Ying; Ren, Hong-Lin; Liu, Zeng-Shan

    2011-12-15

    The detection of heavy metal ions using enzyme-linked immunosorbent assays (ELISA) has been reported by several research groups. However, highly sensitive and selective detection of total heavy metal ions using ELISA is a major technical limitation. Here we describe the development of a versatile and highly sensitive probe combining goat anti-mice IgG, colloidal gold nanoparticles (AuNPs) and horseradish peroxidase (HRP). We demonstrate the utility of this probe using three kinds of heavy metal complete antigens and three monoclonal antibodies (McAbs) in one ELISA system to establish a high-throughput screening protocol. The procedure was successfully applied to analysis of Hg(II), Pb(II) and Cd(II) individually and totally from different water samples. The sensitivities for the detection of Hg(II), Pb(II) and Cd(II) individually and totally are 27.4, 3.9, 15.8 and 18.2 nM, respectively. And all limit of detection (LODs) are lower than 1.2 nM. The recovery results obtained from the developed technique showed a good correlation (R(2)=0.983) with those from ICP-MS. The major advantage of the probe is the versatility and high sensibility. The probe could be potentially used, upon demand, as a sensitive and versatile detector for a broad range of applications. PMID:21975341

  19. EPICOR-II resin degradation results from second samples of PF-8 and PF-20

    International Nuclear Information System (INIS)

    The 28 March 1979 accident at Three Mile Island Unit 2 released approximately 560,000 gallons of contaminated water to the Auxiliary and Fuel Handling Buildings. The water was decontaminated using a demineralization system called EPICOR-II developed by Epicor, Inc. The Low-Level Waste Data Base Development - EPICOR-II Resin/Liner Investigation Project, funded by the US Nuclear Regulatory Commission (NRC), is studying the chemical and physical conditions of the synthetic ion exchange resins found in several EPICOR-II prefilters. The work is being done by EG and G Idaho, Inc., at the Idaho National Engineering Laboratory (INEL). This report summarizes results and analyses of the second sampling of ion exchange resins from EPICOR-II prefilters PF-8 and -20. Results are compared with baseline data from tests performed on unirradiated Epicor, Inc., resins to determine if degradation is continuing due to the high internal radiation dose received by the EPICOR-II resins. Results also are compared with results from the first sampling of the resins from EPICOR-II prefilters PF-8 and PF-20, and with those of other researchers

  20. Product Attachment

    NARCIS (Netherlands)

    Mugge, R.

    2007-01-01

    The topic of this doctoral research is the concept of product attachment for ordinary consumer durables. Product attachment is defined as the strength of the emotional bond a consumer experiences with a specific product. Specifically, the research investigated how this bond develops over time and th

  1. Electrochemically modified sulfisoxazole nanofilm on glassy carbon for determination of cadmium(II) in water samples

    International Nuclear Information System (INIS)

    Highlights: • Sulfisoxazole was grafted onto glassy carbon electrode. • The electrode was characterized by spectroscopic and electrochemical methods. • It has been used for the determination of Cd(II) ions in real samples in very low concentrations. -- Abstract: Sulfisoxazole (SO) was grafted to glassy carbon electrode (GCE) via the electrochemical oxidation of SO in acetonitrile solution containing 0.1 M tetrabutylammoniumtetra-fluoroborate (TBATFB). The prepared electrode was characterized by using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), reflection–absorption infrared spectroscopy (RAIRS) and X-ray photoelectron spectroscopy (XPS). The ellipsometric thickness of SO nanofilm at the glassy carbon surface was obtained as 14.48 ± 0.11 nm. The stability of the SO modified GCE was studied. The SO modified GCE was also utilized for the determination of Cd(II) ions in water samples in the presence of Pb(II) and Fe(II) by adsorptive stripping voltammetry. The linearity range and the detection limit of Cd(II) ions were 1.0 × 10−10 to 5.0 × 10−8 M and 3.3 × 10−11 M (S/N = 3), respectively

  2. Experimental and calculational analyses of actinide samples irradiated in EBR-II

    International Nuclear Information System (INIS)

    Higher actinides influence the characteristics of spent and recycled fuel and dominate the long-term hazards of the reactor waste. Reactor irradiation experiments provide useful benchmarks for testing the evaluated nuclear data for these actinides. During 1967 to 1970, several actinide samples were irradiated in the Idaho EBR-II fast reactor. These samples have now been analyzed, employing mass and alpha spectrometry, to determine the heavy element products. A simple spherical model for the EBR-II core and a recent version of the ORIGEN code with ENDF/B-V data were employed to calculate the exposure products. A detailed comparison between the experimental and calculated results has been made. For samples irradiated at locations near the core center, agreement within 10% was obtained for the major isotopes and their first daughters, and within 20% for the nuclides up the chain. A sensitivity analysis showed that the assumed flux should be increased by 10%

  3. Water masers associated with compact molecular clouds and ultracompact H II regions - The extended sample

    Science.gov (United States)

    Cesaroni, R.; Comoretto, G.; Felli, M.; Palla, F.; Brand, J.; Caselli, P.

    We present the results of a survey of water maser emission at 22.2 GHz towards a selected sample of IRAS-PSC sources which are believed to be associated with very young massive stars. The sample consists of 591 sources. The observations have been carried out using the Medicina 32-m radiotelescope, operated by the Istituto di Radioastronomia - C.N.R., Bologna. Whereas previous searches for maser emission have been directed towards known H II regions, the aim of the present survey is to identify new sources in an even earlier evolutionary phase, corresponding to the development of an ultracompact H II region. It is shown that our sample contains a significant number of sources that could be considered good candidates of massive protostellar cores still in the main accretion phase.

  4. EPICOR-II resin degradation results from first resin samples of PF-8 and PF-20

    International Nuclear Information System (INIS)

    The 28 March 1979 accident at Three Mile Island Unit 2 released approximately 560,000 gallons of contaminated water to the Auxiliary and Fuel Handling Buildings. The water was decontaminated using a demineralization system called EPICOR-II developed by Epicor, Inc. The Low-Level Waste Data Base Development - EPICOR-II Resin/Liner Investigation Project is studying the chemical and physical conditions of the synthetic ion exchange resins found in several EPICOR-II prefilters. This report summarizes results and analyses of the first sampling of ion exchange resins from EPICOR-II prefilters PE-8 and -20. Results are compared with baseline data from tests performed on unirradiated Epicor, Inc. resins to determine if degradation has occurred due to the high internal radiation dose received by the EPICOR-II resins. Results also are compared with recent findings on resin degradation by Battelle Columbus Laboratories and Brookhaven National Laboratory. Analyses comparing test results of resins from EPICOR-II prefilters PF-8 and -20 with unirradiated resins obtained from Epicor, Inc. show resin degradation has occurred in some of the EPICOR-II resins examined. The mechanism of degradation is compared with work of other researchers and is consistent with their findings. The strong acid cation resins (divinylbenzene, styrene base structure) are losing effective cross-linking along with scission of functional groups and are experiencing first an increase and eventually a decrease in total exchange capacity as the absorbed radiation dose increases. The phenolic cation resins (phenol-formaldehyde base structure) show a loss of effective cross-linking and oxidation of the polymer chain. Analyses of resins removed from EPICOR-II prefilters PF-8 and -20 over the next several years should show a further increase in degradation

  5. Cloud point extraction and flame atomic absorption spectrometric determination of cadmium(II), lead(II), palladium(II) and silver(I) in environmental samples

    International Nuclear Information System (INIS)

    The phase-separation phenomenon of non-ionic surfactants occurring in aqueous solution was used for the extraction of cadmium(II), lead(II), palladium(II) and silver(I). The analytical procedure involved the formation of understudy metals complex with bis((1H-benzo [d] imidazol-2yl)ethyl) sulfane (BIES), and quantitatively extracted to the phase rich in octylphenoxypolyethoxyethanol (Triton X-114) after centrifugation. Methanol acidified with 1 mol L-1 HNO3 was added to the surfactant-rich phase prior to its analysis by flame atomic absorption spectrometry (FAAS). The concentration of BIES, pH and amount of surfactant (Triton X-114) was optimized. At optimum conditions, the detection limits of (3 sdb/m) of 1.4, 2.8, 1.6 and 1.4 ng mL-1 for Cd2+, Pb2+, Pd2+ and Ag+ along with preconcentration factors of 30 and enrichment factors of 48, 39, 32 and 42 for Cd2+, Pb2+, Pd2+ and Ag+, respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as radiology waste, vegetable, blood and urine samples.

  6. Cloud point extraction and flame atomic absorption spectrometric determination of cadmium(II), lead(II), palladium(II) and silver(I) in environmental samples

    Energy Technology Data Exchange (ETDEWEB)

    Ghaedi, Mehrorang, E-mail: m_ghaedi@mail.yu.ac.ir [Chemistry Department, Yasouj University, Yasouj 75914-353 (Iran, Islamic Republic of); Shokrollahi, Ardeshir [Chemistry Department, Yasouj University, Yasouj 75914-353 (Iran, Islamic Republic of); Niknam, Khodabakhsh [Chemistry Department, Persian Gulf University, Bushehr (Iran, Islamic Republic of); Niknam, Ebrahim; Najibi, Asma [Chemistry Department, Yasouj University, Yasouj 75914-353 (Iran, Islamic Republic of); Soylak, Mustafa [Chemistry Department, University of Erciyes, 38039 Kayseri (Turkey)

    2009-09-15

    The phase-separation phenomenon of non-ionic surfactants occurring in aqueous solution was used for the extraction of cadmium(II), lead(II), palladium(II) and silver(I). The analytical procedure involved the formation of understudy metals complex with bis((1H-benzo [d] imidazol-2yl)ethyl) sulfane (BIES), and quantitatively extracted to the phase rich in octylphenoxypolyethoxyethanol (Triton X-114) after centrifugation. Methanol acidified with 1 mol L{sup -1} HNO{sub 3} was added to the surfactant-rich phase prior to its analysis by flame atomic absorption spectrometry (FAAS). The concentration of BIES, pH and amount of surfactant (Triton X-114) was optimized. At optimum conditions, the detection limits of (3 sdb/m) of 1.4, 2.8, 1.6 and 1.4 ng mL{sup -1} for Cd{sup 2+}, Pb{sup 2+}, Pd{sup 2+} and Ag{sup +} along with preconcentration factors of 30 and enrichment factors of 48, 39, 32 and 42 for Cd{sup 2+}, Pb{sup 2+}, Pd{sup 2+} and Ag{sup +}, respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as radiology waste, vegetable, blood and urine samples.

  7. EPICOR-II resin degradation results from first resin samples of PF-8 and PF-20

    International Nuclear Information System (INIS)

    The 28 March 1979 accident at Three Mile Island Unit 2 released approximately 560,000 gallons of contaminated water to the Auxiliary and Fuel Handling Buildings. The water was decontaminated using a demineralization system called EPICOR-II developed by Epicor, Inc. The Low-Level Waste Data Base Development-EPICOR-II Resin/Liner Investigation Project, founded by the US Nuclear Regulatory Commission, is studying the chemical and physical conditions of the synthetic ion exchange resins found in several EPICOR-II prefilters. The work is being done by EG and G Idaho, Inc. at the Idaho National Engineering Laboratory. This report summarizes results and analyses of the first sampling of ion exchange resins form EPICOR-II prefilters PF-8 and 20. Results are compared with baseline data from tests performed on unirradiated Epicor, Inc. resins to determine if degradation had occurred due to the high internal radiation dose received by the EPICOR-II resins. Results also are compared with resent findings on resin degradation by Battelle Columbus Laboratories and Brookhaven National Laboratory. 16 refs., 46 figs., 6 tabs

  8. Solid phase extraction of Cd(II), Pb(II), Zn(II) and Ni(II) from food samples using multiwalled carbon nanotubes impregnated with 4-(2-thiazolylazo)resorcinol

    International Nuclear Information System (INIS)

    Multiwalled carbon nanotubes were impregnated with 4-(2-thiazolylazo)resorcinol and used for the separation and preconcentration of Cd(II), Pb(II), Zn(II) and Ni(II) ions from food samples. The analytes were quantitatively recovered at pH 7. 0 and eluted with 3 mol L-1 acetic acid. The effects of pH value, flow rate, eluent type and sample volume on the recoveries, and the effects of alkali, earth alkali and transition metals on the retention of the analytes were studied. The method was validated using the standard certified reference materials SRM 1570A (spinach leaves) and IAEA 336 (lichen), and the results were found to be compatible with the certified values of reference materials. The new enrichment procedure was applied to the determination of these ions in various food samples. (author)

  9. DSM-5 section III personality traits and section II personality disorders in a Flemish community sample.

    Science.gov (United States)

    Bastiaens, Tim; Smits, Dirk; De Hert, Marc; Vanwalleghem, Dominique; Claes, Laurence

    2016-04-30

    The Personality Inventory for DSM-5 (PID-5; Krueger et al., 2012) is a dimensional self-report questionnaire designed to measure personality pathology according to the criterion B of the DSM-5 Section III personality model. In the current issue of DSM, this dimensional Section III personality model co-exists with the Section II categorical personality model derived from DSM-IV-TR. Therefore, investigation of the inter-relatedness of both models across populations and languages is warranted. In this study, we first examined the factor structure and reliability of the PID-5 in a Flemish community sample (N=509) by means of exploratory structural equation modeling and alpha coefficients. Next, we investigated the predictive ability of section III personality traits in relation to section II personality disorders through correlations and stepwise regression analyses. Results revealed a five factor solution for the PID-5, with adequate reliability of the facet scales. The variance in Section II personality disorders could be predicted by their theoretically comprising Section III personality traits, but additional Section III personality traits augmented this prediction. Based on current results, we discuss the Section II personality disorder conceptualization and the Section III personality disorder operationalization. PMID:27086247

  10. Improved Standardization of Type II-P Supernovae: Application to an Expanded Sample

    CERN Document Server

    Poznanski, Dovi; Filippenko, Alexei V; Ganeshalingam, Mohan; Li, Weidong; Bloom, Joshua S; Chornock, Ryan; Foley, Ryan J; Nugent, Peter E; Silverman, Jeffrey M; Cenko, S Bradley; Gates, Elinor L; Leonard, Douglas C; Miller, Adam A; Modjaz, Maryam; Serduke, Frank J D; Smith, Nathan; Swift, Brandon J; Wong, Diane S

    2008-01-01

    In the epoch of precise and accurate cosmology, cross-confirmation using a variety of cosmographic methods is paramount to circumvent systematic uncertainties. Owing to progenitor histories and explosion physics differing from those of Type Ia SNe (SNe Ia), Type II-plateau supernovae (SNe II-P) are unlikely to be affected by evolution in the same way. Based on a new analysis of 17 SNe II-P, and on an improved methodology, we find that SNe II-P are good standardizable candles, almost comparable to SNe Ia. We derive a tight Hubble diagram with dispersion of 10% in distance, using the simple correlation between luminosity and photospheric velocity introduced by Hamuy & Pinto 2002. We show that the descendent method of Nugent et al. 2006 can be further simplified and that the correction for dust extinction has low statistical impact. We find that our SN sample favors, on average, a very steep dust law with total to selective extinction R_V<2. Such an extinction law has been recently inferred for many SNe I...

  11. Attached and Free-Floating Bacterioplankton in Howe Sound, British Columbia, a Coastal Marine Fjord-Embayment

    OpenAIRE

    Albright, L. J.; McCrae, S. K.; May, B. E.

    1986-01-01

    Factors which influence the attachment of bacterioplankton to particles (including phytoplankton) were investigated by using (i) water samples removed from a coastal temperate fjord over an annual cycle and (ii) unialgal cultures of Prorocentrum minimum, Dunaliella tertiolecta, and Skeletonema costatum. Silt and salinity levels in this fjord seawater did not appear to influence bacterial attachment, but the percent attached bacteria was inversely related to both chlorophyll a concentrations a...

  12. Improved prediction of MHC class I and class II epitopes using a novel Gibbs sampling approach

    DEFF Research Database (Denmark)

    Nielsen, Morten; Lundegaard, Claus; Worning, Peder; Hvid, C.S.; Lamberth, K.; Buus, S.; Brunak, Søren; Lund, Ole

    2004-01-01

    , identifying the correct alignment is a crucial part of identifying the core of an MHC class II binding motif. In this context, we wish to describe a novel Gibbs motif sampler method ideally suited for recognizing such weak sequence motifs. The method is based on the Gibbs sampling method, and it incorporates...... MHC class II complex HLA-DR4(B1*0401). Prior identification of information-rich (anchor) positions in the binding motif is shown to improve the predictive performance of the Gibbs sampler. Similarly, a consensus solution obtained from an ensemble average over suboptimal solutions is shown to...... conventional alignment algorithm of ClustalW. The calculation demonstrates that the predictive performance of the Gibbs sampler is higher than that of ClustalW and in most cases also higher than that of the TEPITOPE method....

  13. Measurement of Stark broadening parameters of Fe II and Ni II spectral lines by laser induced breakdown spectroscopy using fused glass samples

    International Nuclear Information System (INIS)

    The Stark widths of 36 Fe II and 27 Ni II spectral lines are measured by laser induced breakdown spectroscopy (LIBS). The use of fused glass samples prepared by borate fusion is evaluated for Stark broadening measurements in LIBS experiments. The spectra of laser-induced plasmas generated from fused glass samples containing oxides show improved line-to-background ratios compared to those measured with alloys. The diagnostics of the fused glass laser induced plasmas shows that their characteristic parameters are not very different from those of alloy plasmas. The electron density in the experiment is in the range (0.8–10)×1017 cm−3 and the temperature varies from 12000 K to 17600 K. These experimental Stark width data, most of which had not been measured previously, complete the data for Fe II and Ni II reported in earlier works, determined by LIBS using alloy samples. -- Highlights: • Measurements of Stark broadening parameters of 36 Fe II and 27 Ni II spectral lines. • Fused glass samples shown to be advantageous for Stark width measurements by LIBS. • Fused glass approach provides low homogeneous concentrations of studied element. • Line-to-background ratio is improved with respect to alloy samples. • Very low concentration is necessary for preventing self-absorption of strong lines

  14. A Complete Sample of Soft X-ray Selected AGN: II. Statistical Analysis

    OpenAIRE

    Grupe, D.

    2004-01-01

    Direct correlations and a Principal Component Analysis (PCA) are presented for a complete sample of 110 soft X-ray selected AGN of which about half are Narrow-Line Seyfert 1 galaxies (NLS1s). The direct correlation analyses show that narrower FWHM(H-beta) correlates with steeper X-ray spectrum, stronger optical FeII emission, weaker [OIII] emission and stronger short-term X-ray variability. This direct correlation analysis and the PCA confirm the Boroson & Green (1992) Eigenvector 1 relations...

  15. Ca II TRIPLET SPECTROSCOPY OF SMALL MAGELLANIC CLOUD RED GIANTS. II. ABUNDANCES FOR A SAMPLE OF FIELD STARS

    International Nuclear Information System (INIS)

    We have obtained metallicities of ∼360 red giant stars distributed in 15 Small Magellanic Cloud (SMC) fields from near-infrared spectra covering the Ca II triplet lines using the VLT + FORS2. The errors of the derived [Fe/H] values range from 0.09 to 0.35 dex per star, with a mean of 0.17 dex. The metallicity distribution (MD) of the whole sample shows a mean value of [Fe/H] = -1.00 ± 0.02, with a dispersion of 0.32 ± 0.01, in agreement with global mean [Fe/H] values found in previous studies. We find no evidence of a metallicity gradient in the SMC. In fact, on analyzing the MD of each field, we derived mean values of [Fe/H] = -0.99 ± 0.08 and [Fe/H] = -1.02 ± 0.07 for fields located closer and farther than 4 deg. from the center of the galaxy, respectively. In addition, there is a clear tendency for the field stars to be more metal-poor than the corresponding cluster they surround, independent of their positions in the galaxy and of the clusters' age. We argue that this most likely stems from the field stars being somewhat older and therefore somewhat more metal-poor than most of our clusters.

  16. The association between attachment style and uni- and bi-directional pursuer-distancer patterns in couples: A clinical sample of couples in counseling

    OpenAIRE

    Davies, Lorin Christopher

    2004-01-01

    This study examined the relationship between adult attachment style and pursuer-distancer patterns in couples. Both uni- and bi-directional pursuer-distancer patterns were studied. Participants were 67 individuals (including 32 couples) in therapy. Each partner, independent of the other, completed an anonymous questionnaire containing the Multi-item Measure of Adult Romantic Attachment (Brennan, Clark, & Shaver, 1998) and a four-item measure of pursuer-distancer pattern designed for this s...

  17. Draft Genome Sequences of Five Pseudomonas fluorescens Subclade I and II Strains, Isolated from Human Respiratory Samples

    OpenAIRE

    Brittan S Scales; Erb-Downward, John R.; LiPuma, John J.; Huffnagle, Gary B.

    2015-01-01

    We report the draft genomes of five Pseudomonas fluorescens strains, isolated from clinical samples. Phylogenetic analysis places three in subclade I and two in subclade II of the P. fluorescens species complex. The average G+C content and genomic size are 63% and 7.1 Mbp (subclade I) and 59.6% and 6.14 Mbp (subclade II), respectively.

  18. Activation of the attachment system and mentalization in depressive and healthy individuals: An experimental control study

    Directory of Open Access Journals (Sweden)

    Fizke Ella

    2013-01-01

    Full Text Available From a developmental and clinical point of view attachment theory and mentalization are closely connected and have become increasingly important to understand the origins of psychopathological development. However, very little is known about how exactly different inner working models of attachment are related to diverse mentalizing abilities and this is particularly true for adult populations - healthy as well as clinical populations. In the present study we investigated this relation with a sample of inpatients diagnosed with depression and a sample of healthy individuals. In an experimental setting the attachment system was activated using the Adult Attachment Projective Picture System (AAP. Mentalization was assessed during activation and in comparison to a control condition using a modified version of the Reading the Mind in the Eyes Test (RMET. We expected that an activation of the attachment system i diminishes the capacity to take another’s perspective in individuals with unresolved state of mind, ii has no impact in individuals with secure attachment representation and iii is dependent of clinical status in individuals with insecure (but organized working models of attachment. Overall, these hypotheses were confirmed. However, the impact of clinical status on mentalization in insecure attachment has to be further explored. We summarize that attachment state of mind has a mediating influence on mentalization basically in such situations where the attachment system is activated.

  19. Type-II generalized family-wise error rate formulas with application to sample size determination.

    Science.gov (United States)

    Delorme, Phillipe; de Micheaux, Pierre Lafaye; Liquet, Benoit; Riou, Jérémie

    2016-07-20

    Multiple endpoints are increasingly used in clinical trials. The significance of some of these clinical trials is established if at least r null hypotheses are rejected among m that are simultaneously tested. The usual approach in multiple hypothesis testing is to control the family-wise error rate, which is defined as the probability that at least one type-I error is made. More recently, the q-generalized family-wise error rate has been introduced to control the probability of making at least q false rejections. For procedures controlling this global type-I error rate, we define a type-II r-generalized family-wise error rate, which is directly related to the r-power defined as the probability of rejecting at least r false null hypotheses. We obtain very general power formulas that can be used to compute the sample size for single-step and step-wise procedures. These are implemented in our R package rPowerSampleSize available on the CRAN, making them directly available to end users. Complexities of the formulas are presented to gain insight into computation time issues. Comparison with Monte Carlo strategy is also presented. We compute sample sizes for two clinical trials involving multiple endpoints: one designed to investigate the effectiveness of a drug against acute heart failure and the other for the immunogenicity of a vaccine strategy against pneumococcus. Copyright © 2016 John Wiley & Sons, Ltd. PMID:26914402

  20. Sample Size Dependence of Second Magnetization Peak in Type-II Superconductors

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    We show that the second magnetization peak (SMP), i. e., an increase in the magnetization hysteresis loop width in type-II superconductors,vanishes for samples smaller than a critical size. We argue that the SMP is not related to the critical current enhancement but can be well explained within a framework of the thermomagnetic flux-jump instability theory, where flux jumps reduce the absolute irreversible magnetization relative to the isothermal critical state value at low enough magnetic fields. The recovering of the isothermal critical state with increasing field leads to the SMP. The low-field SMP takes place in both low-Tc conventional and high-Tc unconventional superconductors. Our results show that the restoration of the isothermal critical state is responsible for the SMP occurrence in both cases.

  1. Analytical performance evaluation of Anyplex II HPV28 and Euroarray HPV for genotyping of cervical samples.

    Science.gov (United States)

    Latsuzbaia, Ardashel; Tapp, Jessica; Nguyen, Trung; Fischer, Marc; Arbyn, Marc; Weyers, Steven; Mossong, Joël

    2016-07-01

    Analytically accurate human papillomavirus (HPV) genotyping methods are required to assess the impact of HPV vaccination. The aim of this study was to evaluate the analytical performance of Anyplex II HPV28 (Seegene, Korea) and Euroarray HPV (Euroimmun, Germany) genotyping kits, for conducting a future HPV vaccine efficacy monitoring study in Luxembourg. A total number of 150 cervical swabs were collected from women with mean age 31.4 years. Agreements for detecting any HPV between Aptima/Anyplex (88.0%) and Aptima/Euroarray (90.7%) were similar. Agreement of Anyplex/EuroArray with Aptima was higher for Genotypes 16, 18 or 45 than for the other 11 HPVs. The average number of HPV genotypes detected per sample was similar with 2.6 and 2.5, for Anyplex and EuroArray, respectively. In conclusion, Anyplex and Euroarray showed high agreement in general and in particular for detecting genotypes contained in HPV vaccines. PMID:27156793

  2. RNA-seq of human reference RNA samples using a thermostable group II intron reverse transcriptase.

    Science.gov (United States)

    Nottingham, Ryan M; Wu, Douglas C; Qin, Yidan; Yao, Jun; Hunicke-Smith, Scott; Lambowitz, Alan M

    2016-04-01

    Next-generation RNA sequencing (RNA-seq) has revolutionized our ability to analyze transcriptomes. Current RNA-seq methods are highly reproducible, but each has biases resulting from different modes of RNA sample preparation, reverse transcription, and adapter addition, leading to variability between methods. Moreover, the transcriptome cannot be profiled comprehensively because highly structured RNAs, such as tRNAs and snoRNAs, are refractory to conventional RNA-seq methods. Recently, we developed a new method for strand-specific RNA-seq using thermostable group II intron reverse transcriptases (TGIRTs). TGIRT enzymes have higher processivity and fidelity than conventional retroviral reverse transcriptases plus a novel template-switching activity that enables RNA-seq adapter addition during cDNA synthesis without using RNA ligase. Here, we obtained TGIRT-seq data sets for well-characterized human RNA reference samples and compared them to previous data sets obtained for these RNAs by the Illumina TruSeq v2 and v3 methods. We find that TGIRT-seq recapitulates the relative abundance of human transcripts and RNA spike-ins in ribo-depleted, fragmented RNA samples comparably to non-strand-specific TruSeq v2 and better than strand-specific TruSeq v3. Moreover, TGIRT-seq is more strand specific than TruSeq v3 and eliminates sampling biases from random hexamer priming, which are inherent to TruSeq. The TGIRT-seq data sets also show more uniform 5' to 3' gene coverage and identify more splice junctions, particularly near the 5' ends of mRNAs, than do the TruSeq data sets. Finally, TGIRT-seq enables the simultaneous profiling of mRNAs and lncRNAs in the same RNA-seq experiment as structured small ncRNAs, including tRNAs, which are essentially absent with TruSeq. PMID:26826130

  3. Burnup calculations and chemical analysis of irradiated fuel samples studied in LWR-PROTEUS phase II

    International Nuclear Information System (INIS)

    The isotopic compositions of 5 UO2 samples irradiated in a Swiss PWR power plant, which were investigated in the LWR-PROTEUS Phase II programme, were calculated using the CASMO-4 and BOXER assembly codes. The burnups of the samples range from 50 to 90 MWd/kg. The results for a large number of actinide and fission product nuclides were compared to those of chemical analyses performed using a combination of chromatographic separation and mass spectrometry. A good agreement of calculated and measured concentrations is found for many of the nuclides investigated with both codes. The concentrations of the Pu isotopes are mostly predicted within ±10%, the two codes giving quite different results, except for 242Pu. Relatively significant deviations are found for some isotopes of Cs and Sm, and large discrepancies are observed for Eu and Gd. The overall quality of the predictions by the two codes is comparable, and the deviations from the experimental data do not generally increase with burnup. (authors)

  4. Analysis of Potential Risk Caused by Hydrogen and Carbon Monoxide in Buildings Attached to Containment for Asco 1 and 2 and Vandellos II NPPs

    International Nuclear Information System (INIS)

    The Consejo de Seguridad Nuclear (CSN) of Spain issued a Technical Instruction encouraging nuclear power plant s to analyze the potential risk of hydrogen in the buildings attached to containment [1]. According to the Technical Instruction, the analysis should assume that all severe accident mitigation features are available, including those that are planned but not yet in place. (Author)

  5. Analysis of Potential Risk Caused by Hydrogen and Carbon Monoxide in Buildings Attached to Containment for Asco 1 and 2 and Vandellos II NPPs

    Energy Technology Data Exchange (ETDEWEB)

    Nos, V.; Rosa, C. de la; Lee, S. J.; Burelbach, J.; Plys, M.; Fornos, J.

    2014-07-01

    The Consejo de Seguridad Nuclear (CSN) of Spain issued a Technical Instruction encouraging nuclear power plant s to analyze the potential risk of hydrogen in the buildings attached to containment [1]. According to the Technical Instruction, the analysis should assume that all severe accident mitigation features are available, including those that are planned but not yet in place. (Author)

  6. Correlates of appearance and weight satisfaction in a U.S. National Sample: Personality, attachment style, television viewing, self-esteem, and life satisfaction.

    Science.gov (United States)

    Frederick, David A; Sandhu, Gaganjyot; Morse, Patrick J; Swami, Viren

    2016-06-01

    We examined the prevalence and correlates of satisfaction with appearance and weight. Participants (N=12,176) completed an online survey posted on the NBCNews.com and Today.com websites. Few men and women were very to extremely dissatisfied with their physical appearances (6%; 9%), but feeling very to extremely dissatisfied with weight was more common (15%; 20%). Only about one-fourth of men and women felt very to extremely satisfied with their appearances (28%; 26%) and weights (24%; 20%). Men and women with higher body masses reported higher appearance and weight dissatisfaction. Dissatisfied people had higher Neuroticism, more preoccupied and fearful attachment styles, and spent more hours watching television. In contrast, satisfied people had higher Openness, Conscientious, and Extraversion, were more secure in attachment style, and had higher self-esteem and life satisfaction. These findings highlight the high prevalence of body dissatisfaction and the factors linked to dissatisfaction among U.S. adults. PMID:27172812

  7. Prevalence of Axis II disorders in a sample of clients undertaking psychiatric evaluation for sex reassignment surgery

    OpenAIRE

    Madeddu, F; Prunas, A; Hartmann, D.

    2009-01-01

    Abstract The aim of the present study is to assess the prevalence of Axis II disorders (DSM-IV-TR) in a sample of clients requesting sex reassignment surgery (SRS), consecutively admitted to a Gender Identity Disorder (GID) psychiatric unit. Fifty clients selfreferred as transsexuals (34 biological males and 16 biological females; mean age = 31.74 ± 7.06 years) were assessed through the SCID-II after a preliminary evaluation to exclude current major psychiatric disorders. Prevalence of any...

  8. Evaluation of thiosemicarbazone derivative as chelating agent for the simultaneous removal and trace determination of Cd(II) and Pb(II) in food and water samples.

    Science.gov (United States)

    Koduru, Janardhan Reddy; Lee, Kap Duk

    2014-05-01

    In the present investigation, prepared N-ethyl-3-carbazolecarbaxaldehyde-3-thiosemicarbazone (ECCT) and employed for the simultaneous removal and determination of trace amounts of Cd(II) and Pb(II) from food and water samples. Cd(II) and Pb(II) gave yellow and orange colored complexes with ECCT in acetate buffer at pH 6.0 with λmax, 380 and 440nm, respectively. Both complexes were easily extractable into kerosene at 1:1(M:L) composition. It was in accordance with Beer's law in the range of 0.0-12.0 and 0.0-10.0μgmL(-1) with 0.999 and 0.997 correlation coefficient for Cd(II) and Pb(II) complexes, respectively, indicated a good linearity between the two variables. The molar absorptivity and Sandell's sensitivity were found to be 0.740×10(4)Lmol(-1)cm(-1), 1.52×10(-3)μgcm(-2) for Cd(II) and 1.809×10(4)L mol(-1)cm(-1), 1.15×10(-3)μgcm(-2) for Pb(II). The precision and accuracy of the method was checked for both metal ions by finding the relative standard deviations (n=8), which were 0.689% and 0.443%, with detection limits of 0.00151μgL(-1) and 0.00264μgL(-1) for Cd(II) and Pb(II), respectively. Further validation using certified reference material, NIST 1568b, resulted in determined concentrations of 0.028±0.253μgg(-1) for Cd(II) and 0.046±0.325μgg(-1) for Pb(II). These determined values agree well with the certified values in the reference materials. The interfering effects of various cations and anions were also studied. The proposed method performance was also evaluated in terms of Student 'T' test and Variance 'F' test, which indicated the significance of the present method parameters, as an inter comparison of the experimental values using ICP-OES. PMID:24360411

  9. An Estimation of the Entropy for a Rayleigh Distribution Based on Doubly-Generalized Type-II Hybrid Censored Samples

    Directory of Open Access Journals (Sweden)

    Youngseuk Cho

    2014-07-01

    Full Text Available In this paper, based on a doubly generalized Type II censored sample, the maximum likelihood estimators (MLEs, the approximate MLE and the Bayes estimator for the entropy of the Rayleigh distribution are derived. We compare the entropy estimators’ root mean squared error (RMSE, bias and Kullback–Leibler divergence values. The simulation procedure is repeated 10,000 times for the sample size n = 10, 20, 40 and 100 and various doubly generalized Type II hybrid censoring schemes. Finally, a real data set has been analyzed for illustrative purposes.

  10. J-Band Infrared Spectroscopy of a Sample of Brown Dwarfs Using Nirspec on Keck II

    CERN Document Server

    McLean, I S; Becklin, E E; Figer, D F; Gilbert, A M; Graham, J R; Larkin, J E; Levenson, N A; Teplitz, H I; Kirkpatrick, J D; Lean, Ian S. Mc; Wilcox, Mavourneen K.; Figer, Donald F.; Gilbert, Andrea M.; Graham, James R.; Larkin, James E.; Teplitz, Harry I.

    2000-01-01

    Near-infrared spectroscopic observations of a sample of very cool, low-massobjects are presented with higher spectral resolution than in any previousstudies. Six of the objects are L-dwarfs, ranging in spectral class from L2 toL8/9, and the seventh is a methane or T-dwarf. These new observations wereobtained during commissioning of NIRSPEC, the first high-resolutionnear-infrared cryogenic spectrograph for the Keck II 10-meter telescope onMauna Kea, Hawaii. Spectra with a resolving power of R=2500 from 1.135 to 1.360microns (approximately J-band) are presented for each source. At thisresolution, a rich spectral structure is revealed, much of which is due toblending of unresolved molecular transitions. Strong lines due to neutralpotassium (K I), and bands due to iron hydride (FeH) and steam (H2O) changesignificantly throughout the L sequence. Iron hydride disappears between L5 andL8, the steam bands deepen and the K I lines gradually become weaker but widerdue to pressure broadening. An unidentified feature occ...

  11. Application of Synergistic Solvent Extraction by Formation of Ternary Complex for Determination of Trace Zn(II) in Water Samples

    International Nuclear Information System (INIS)

    The application of a synergistic solvent extraction by the formation of ternary complex with pyrocatechol violet (PV) and benzalkonium chloride (BC) was studied for determination of trace Zn(II) in water samples. The pH of sample solution and the amount of PV and BC added were optimized for the formation of the stable complex, a proper solvent was selected for the effective extraction, and the concentration of nitric acid was fixed for the back extraction of the complex from the solvent. After the ionic strength of 100 mL sample solution was adjusted to 0.1 M by adding NaCl and the pH was fixed at 9 with a carbonate buffer, 1.0 mL of 2% PV solution was added to form Zn(II)-PV complex then the Zn(II)-PV/BC ternary complex was made by adding 1.0 mL of 10% BC solution. The ternary complex was extracted into 10 mL of MIBK. And the ternary complex was backextracted with 10 mL of 1.0 mol/L nitric acid to determine Zn(II) by a flame atomic absorption spectrophotometer (flame-AAS). The interference of concomitant ions on the extraction of Zn(II) was investigated. This procedure was applied to the analysis of three real samples such as Dalbang-dam water, laboratory tap water and Jungnajin seawater. The recoveries of Zn(II) in spiked samples were 86.58-104.1%

  12. Alumina physically loaded by thiosemicarbazide for selective preconcentration of mercury(II) ion from natural water samples

    Energy Technology Data Exchange (ETDEWEB)

    Ahmed, Salwa A. [Chemistry Department, Faculty of Science, El-Minia University, El-Minia (Egypt)], E-mail: salwa_kasem2003@yahoo.com

    2008-08-15

    The multifunctional ligand, thiosemicarbazide, was physically loaded on neutral alumina. The produced alumina-modified solid phase (SP) extractor named, alumina-modified thiosemicarbazide (AM-TSC), experienced high thermal and medium stability. This new phase was identified based on surface coverage determination by thermal desorption method to be 0.437 {+-} 0.1 mmol g{sup -1}. The selectivity of AM-TSC phase towards the uptake of different nine metal ions was checked using simple, fast and direct batch equilibration technique. AM-TSC was found to have the highest capacity in selective extraction of Hg(II) from aqueous solutions all over the range of pH used (1.0-7.0), compared to the other eight tested metal ions. So, Hg(II) uptake was 1.82 mmol g{sup -1} (distribution coefficient log K{sub d} = 5.658) at pH 1.0 or 2.0 and 1.78, 1.73, 1.48, 1.28 and 1.28 mmol g{sup -1} (log K{sub d} = 4.607, 4.265, 3.634, 3.372 and 3.372), at pH 3.0, 4.0, 5.0, 6.0 and 7.0, respectively. On the other hand, the metal ions Ca(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II) showed low uptake values in range 0.009-0.720 mmol g{sup -1} (log K{sub d} < 3.0) at their optimum pH values. A mechanism was suggested to explain the unique uptake of Hg(II) ions based on their binding as neutral and chloroanionic species predominate at pH values {<=}3.0 of a medium rich in chloride ions. Application of the new phase for the preconcentration of ultratrace amounts of Hg(II) ions spiked natural water samples: doubly distilled water (DDW), drinking tap water (DTW) and Nile river water (NRW) using cold vapor atomic absorption spectroscopy (CV-AAS) was studied. The high recovery values obtained using AM-TSC (98.5 {+-} 0.5, 98.0 {+-} 0.5 and 103.0 {+-} 1.0) for DDW, DTW and NRW samples, respectively based on excellent enrichment factor 1000, along with a good precision (R.S.D.% 0.51-0.97%, n 3) demonstrate the accuracy and validity of the new modified alumina sorbent for preconcentrating

  13. Alumina physically loaded by thiosemicarbazide for selective preconcentration of mercury(II) ion from natural water samples

    International Nuclear Information System (INIS)

    The multifunctional ligand, thiosemicarbazide, was physically loaded on neutral alumina. The produced alumina-modified solid phase (SP) extractor named, alumina-modified thiosemicarbazide (AM-TSC), experienced high thermal and medium stability. This new phase was identified based on surface coverage determination by thermal desorption method to be 0.437 ± 0.1 mmol g-1. The selectivity of AM-TSC phase towards the uptake of different nine metal ions was checked using simple, fast and direct batch equilibration technique. AM-TSC was found to have the highest capacity in selective extraction of Hg(II) from aqueous solutions all over the range of pH used (1.0-7.0), compared to the other eight tested metal ions. So, Hg(II) uptake was 1.82 mmol g-1 (distribution coefficient log Kd = 5.658) at pH 1.0 or 2.0 and 1.78, 1.73, 1.48, 1.28 and 1.28 mmol g-1 (log Kd = 4.607, 4.265, 3.634, 3.372 and 3.372), at pH 3.0, 4.0, 5.0, 6.0 and 7.0, respectively. On the other hand, the metal ions Ca(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II) showed low uptake values in range 0.009-0.720 mmol g-1 (log Kd < 3.0) at their optimum pH values. A mechanism was suggested to explain the unique uptake of Hg(II) ions based on their binding as neutral and chloroanionic species predominate at pH values ≤3.0 of a medium rich in chloride ions. Application of the new phase for the preconcentration of ultratrace amounts of Hg(II) ions spiked natural water samples: doubly distilled water (DDW), drinking tap water (DTW) and Nile river water (NRW) using cold vapor atomic absorption spectroscopy (CV-AAS) was studied. The high recovery values obtained using AM-TSC (98.5 ± 0.5, 98.0 ± 0.5 and 103.0 ± 1.0) for DDW, DTW and NRW samples, respectively based on excellent enrichment factor 1000, along with a good precision (R.S.D.% 0.51-0.97%, n 3) demonstrate the accuracy and validity of the new modified alumina sorbent for preconcentrating ultratrace amounts of Hg(II) with no matrix

  14. Self-esteem in adolescents with Angle Class I, II and III malocclusion in a Peruvian sample

    Science.gov (United States)

    Florián-Vargas, Karla; Honores, Marcos J. Carruitero; Bernabé, Eduardo; Flores-Mir, Carlos

    2016-01-01

    ABSTRACT Objective: To compare self-esteem scores in 12 to 16-year-old adolescents with different Angle malocclusion types in a Peruvian sample. Material and Methods: A cross-sectional study was conducted in a sample of 276 adolescents (159, 52 and 65 with Angle Class I, II and III malocclusions, respectively) from Trujillo, Peru. Participants were asked to complete the Rosenberg Self-Esteem Scale (RSES) and were also clinically examined, so as to have Angle malocclusion classification determined. Analysis of covariance (ANCOVA) was used to compare RSES scores among adolescents with Class I, II and III malocclusions, with participants' demographic factors being controlled. Results: Mean RSES scores for adolescents with Class I, II and III malocclusions were 20.47 ± 3.96, 21.96 ± 3.27 and 21.26 ± 4.81, respectively. The ANCOVA test showed that adolescents with Class II malocclusion had a significantly higher RSES score than those with Class I malocclusion, but there were no differences between other malocclusion groups. Supplemental analysis suggested that only those with Class II, Division 2 malocclusion might have greater self-esteem when compared to adolescents with Class I malocclusion. Conclusion: This study shows that, in general, self-esteem did not vary according to adolescents' malocclusion in the sample studied. Surprisingly, only adolescents with Class II malocclusion, particularly Class II, Division 2, reported better self-esteem than those with Class I malocclusion. A more detailed analysis assessing the impact of anterior occlusal features should be conducted. PMID:27275616

  15. Self-esteem in adolescents with Angle Class I, II and III malocclusion in a Peruvian sample

    Directory of Open Access Journals (Sweden)

    Karla Florián-Vargas

    2016-04-01

    Full Text Available ABSTRACT Objective: To compare self-esteem scores in 12 to 16-year-old adolescents with different Angle malocclusion types in a Peruvian sample. Material and Methods: A cross-sectional study was conducted in a sample of 276 adolescents (159, 52 and 65 with Angle Class I, II and III malocclusions, respectively from Trujillo, Peru. Participants were asked to complete the Rosenberg Self-Esteem Scale (RSES and were also clinically examined, so as to have Angle malocclusion classification determined. Analysis of covariance (ANCOVA was used to compare RSES scores among adolescents with Class I, II and III malocclusions, with participants' demographic factors being controlled. Results: Mean RSES scores for adolescents with Class I, II and III malocclusions were 20.47 ± 3.96, 21.96 ± 3.27 and 21.26 ± 4.81, respectively. The ANCOVA test showed that adolescents with Class II malocclusion had a significantly higher RSES score than those with Class I malocclusion, but there were no differences between other malocclusion groups. Supplemental analysis suggested that only those with Class II, Division 2 malocclusion might have greater self-esteem when compared to adolescents with Class I malocclusion. Conclusion: This study shows that, in general, self-esteem did not vary according to adolescents' malocclusion in the sample studied. Surprisingly, only adolescents with Class II malocclusion, particularly Class II, Division 2, reported better self-esteem than those with Class I malocclusion. A more detailed analysis assessing the impact of anterior occlusal features should be conducted.

  16. J-Band Infrared Spectroscopy of a Sample of Brown Dwarfs Using NIRSPEC on Keck II.

    Science.gov (United States)

    McLean; Wilcox; Becklin; Figer; Gilbert; Graham; Larkin; Levenson; Teplitz; Kirkpatrick

    2000-04-10

    Near-infrared spectroscopic observations of a sample of very cool, low-mass objects are presented with higher spectral resolution than in any previous studies. Six of the objects are L dwarfs, ranging in spectral class from L2 to L8/9, and the seventh is a methane or T dwarf. These new observations were obtained during commissioning of the near-infrared spectrometer (NIRSPEC), the first high-resolution near-infrared cryogenic spectrograph for the Keck II 10 m telescope on Mauna Kea, Hawaii. Spectra with a resolving power of R approximately 2500 from 1.135 to 1.360 µm (approximately J band) are presented for each source. At this resolution, a rich spectral structure is revealed, much of which is due to blending of unresolved molecular transitions. Strong lines due to neutral potassium (K i) and bands due to iron hydride (FeH) and steam (H2O) change significantly throughout the L sequence. Iron hydride disappears between L5 and L8, the steam bands deepen, and the K i lines gradually become weaker but wider because of pressure broadening. An unidentified feature occurs at 1.22 µm that has a temperature dependence like FeH but has no counterpart in the available FeH opacity data. Because these objects are 3-6 mag brighter in the near-infrared compared with the I band, spectral classification is efficient. One of the objects studied (2MASSW J1523+3014) is the coolest L dwarf discovered so far by the 2 Micron All-Sky Survey (2MASS), but its spectrum is still significantly different from the methane-dominated objects such as Gl 229B or SDSS 1624+0029. PMID:10727388

  17. Reaction mechanism of Ru(II) piano-stool complexes: umbrella sampling QM/MM MD study.

    Science.gov (United States)

    Futera, Zdeněk; Burda, Jaroslav V

    2014-07-15

    Biologically relevant interactions of piano-stool ruthenium(II) complexes with ds-DNA are studied in this article by hybrid quantum mechanics-molecular mechanics (QM/MM) computational technique. The whole reaction mechanism is divided into three phases: (i) hydration of the [Ru(II) (η(6) -benzene)(en)Cl](+) complex, (ii) monoadduct formation between the resulting aqua-Ru(II) complex and N7 position of one of the guanines in the ds-DNA oligomer, and (iii) formation of the intrastrand Ru(II) bridge (cross-link) between two adjacent guanines. Free energy profiles of all the reactions are explored by QM/MM MD umbrella sampling approach where the Ru(II) complex and two guanines represent a quantum core, which is described by density functional theory methods. The combined QM/MM scheme is realized by our own software, which was developed to couple several quantum chemical programs (in this study Gaussian 09) and Amber 11 package. Calculated free energy barriers of the both ruthenium hydration and Ru(II)-N7(G) DNA binding process are in good agreement with experimentally measured rate constants. Then, this method was used to study the possibility of cross-link formation. One feasible pathway leading to Ru(II) guanine-guanine cross-link with synchronous releasing of the benzene ligand is predicted. The cross-linking is an exergonic process with the energy barrier lower than for the monoadduct reaction of Ru(II) complex with ds-DNA. PMID:24865949

  18. Determination of cadmium(II), cobalt(II), nickel(II), lead(II), zinc(II), and copper(II) in water samples using dual-cloud point extraction and inductively coupled plasma emission spectrometry

    International Nuclear Information System (INIS)

    Highlights: ► A dual-cloud point extraction (d-CPE) procedure was firstly developed for simultaneous pre-concentration and separation of trace metal ions combining with ICP-OES. ► The developed d-CPE can significantly eliminate the surfactant of Triton X-114 and successfully extend to the determination of water samples with good performance. ► The designed method is simple, high efficient, low cost, and in accordance with the green chemistry concept. - Abstract: A dual-cloud point extraction (d-CPE) procedure has been developed for simultaneous pre-concentration and separation of heavy metal ions (Cd2+, Co2+, Ni2+, Pb2+, Zn2+, and Cu2+ ion) in water samples by inductively coupled plasma optical emission spectrometry (ICP-OES). The procedure is based on forming complexes of metal ion with 8-hydroxyquinoline (8-HQ) into the as-formed Triton X-114 surfactant rich phase. Instead of direct injection or analysis, the surfactant rich phase containing the complexes was treated by nitric acid, and the detected ions were back extracted again into aqueous phase at the second cloud point extraction stage, and finally determined by ICP-OES. Under the optimum conditions (pH = 7.0, Triton X-114 = 0.05% (w/v), 8-HQ = 2.0 × 10−4 mol L−1, HNO3 = 0.8 mol L−1), the detection limits for Cd2+, Co2+, Ni2+, Pb2+, Zn2+, and Cu2+ ions were 0.01, 0.04, 0.01, 0.34, 0.05, and 0.04 μg L−1, respectively. Relative standard deviation (RSD) values for 10 replicates at 100 μg L−1 were lower than 6.0%. The proposed method could be successfully applied to the determination of Cd2+, Co2+, Ni2+, Pb2+, Zn2+, and Cu2+ ion in water samples.

  19. Determination of cadmium(II), cobalt(II), nickel(II), lead(II), zinc(II), and copper(II) in water samples using dual-cloud point extraction and inductively coupled plasma emission spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Lingling; Zhong, Shuxian; Fang, Keming; Qian, Zhaosheng [College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004 (China); Chen, Jianrong, E-mail: cjr@zjnu.cn [College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004 (China); College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004 (China)

    2012-11-15

    Highlights: Black-Right-Pointing-Pointer A dual-cloud point extraction (d-CPE) procedure was firstly developed for simultaneous pre-concentration and separation of trace metal ions combining with ICP-OES. Black-Right-Pointing-Pointer The developed d-CPE can significantly eliminate the surfactant of Triton X-114 and successfully extend to the determination of water samples with good performance. Black-Right-Pointing-Pointer The designed method is simple, high efficient, low cost, and in accordance with the green chemistry concept. - Abstract: A dual-cloud point extraction (d-CPE) procedure has been developed for simultaneous pre-concentration and separation of heavy metal ions (Cd{sup 2+}, Co{sup 2+}, Ni{sup 2+}, Pb{sup 2+}, Zn{sup 2+}, and Cu{sup 2+} ion) in water samples by inductively coupled plasma optical emission spectrometry (ICP-OES). The procedure is based on forming complexes of metal ion with 8-hydroxyquinoline (8-HQ) into the as-formed Triton X-114 surfactant rich phase. Instead of direct injection or analysis, the surfactant rich phase containing the complexes was treated by nitric acid, and the detected ions were back extracted again into aqueous phase at the second cloud point extraction stage, and finally determined by ICP-OES. Under the optimum conditions (pH = 7.0, Triton X-114 = 0.05% (w/v), 8-HQ = 2.0 Multiplication-Sign 10{sup -4} mol L{sup -1}, HNO{sub 3} = 0.8 mol L{sup -1}), the detection limits for Cd{sup 2+}, Co{sup 2+}, Ni{sup 2+}, Pb{sup 2+}, Zn{sup 2+}, and Cu{sup 2+} ions were 0.01, 0.04, 0.01, 0.34, 0.05, and 0.04 {mu}g L{sup -1}, respectively. Relative standard deviation (RSD) values for 10 replicates at 100 {mu}g L{sup -1} were lower than 6.0%. The proposed method could be successfully applied to the determination of Cd{sup 2+}, Co{sup 2+}, Ni{sup 2+}, Pb{sup 2+}, Zn{sup 2+}, and Cu{sup 2+} ion in water samples.

  20. Defect-induced luminescence in sol-gel silica samples doped with Co(II) at different concentrations

    International Nuclear Information System (INIS)

    The defect-induced luminescence properties of silica samples prepared by the sol-gel method and doped with Co(II) are reported. Silica monoliths doped with different concentrations of Co(II) were laser irradiated (He-Ne 632.8 nm) producing fluorescence. However, this fluorescence is exponentially reduced with the irradiation time, to practically disappear. The rate the fluorescence decays can be well modeled with a double exponential function of the irradiation time, containing two different relaxation times; a baseline is also required to take into account some residual fluorescence. The characteristic times involved in this luminescence quenching process are in the range of seconds. This luminescence suppression can be associated to the local heating produced by the laser irradiation when focused in a small area (2 μm in diameter) on the sample. This heating process reduces physical (grain boundaries, surface states) and chemical (oxygen vacancies produced by the dopant) defects in the sample

  1. Synthesis, characterization and catalytic oxidation properties of multi-wall carbon nanotubes with a covalently attached copper(II) salen complex

    International Nuclear Information System (INIS)

    Hydroxyl functionalized copper(II) Schiff-base, N,N'-bis(4-hydroxysalicylidene)-ethylene-1,2-diaminecopper(II), [Cu((OH)2-salen)], has been covalently anchored on modified MWCNTs. The new modified MWCNTs ([Cu((OH)2-salen)]-MWCNTs) have been characterized by TEM, thermal analysis, XRD, XPS, UV-vis, DRS, FT-IR spectroscopy and elemental analysis. The modified copper(II) MWCNTs solid was used to affect the catalytic oxidation of ethylbenzene with tert-butylhydroperoxide as the oxidant at 333 K. The system is truly heterogeneous (no leaching observed) and reusable (no decrease in activity) in three consecutive runs. Acetophenone was the major product though small amounts of o- and p-hydroxyacetophenones were also formed revealing that C-H bond activation takes place both at benzylic and aromatic ring carbon atoms. Ring hydroxylation was more over the 'neat' complexes than over the encapsulated complexes.

  2. Synthesis, characterization and catalytic oxidation properties of multi-wall carbon nanotubes with a covalently attached copper(II) salen complex

    Energy Technology Data Exchange (ETDEWEB)

    Salavati-Niasari, Masoud, E-mail: salavati@kashanu.ac.ir [Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167 (Iran, Islamic Republic of); Department of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167 (Iran, Islamic Republic of); Bazarganipour, Mehdi [Department of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167 (Iran, Islamic Republic of)

    2009-06-15

    Hydroxyl functionalized copper(II) Schiff-base, N,N'-bis(4-hydroxysalicylidene)-ethylene-1,2-diaminecopper(II), [Cu((OH){sub 2}-salen)], has been covalently anchored on modified MWCNTs. The new modified MWCNTs ([Cu((OH){sub 2}-salen)]-MWCNTs) have been characterized by TEM, thermal analysis, XRD, XPS, UV-vis, DRS, FT-IR spectroscopy and elemental analysis. The modified copper(II) MWCNTs solid was used to affect the catalytic oxidation of ethylbenzene with tert-butylhydroperoxide as the oxidant at 333 K. The system is truly heterogeneous (no leaching observed) and reusable (no decrease in activity) in three consecutive runs. Acetophenone was the major product though small amounts of o- and p-hydroxyacetophenones were also formed revealing that C-H bond activation takes place both at benzylic and aromatic ring carbon atoms. Ring hydroxylation was more over the 'neat' complexes than over the encapsulated complexes.

  3. EPR study of powdered samples of copper(II) dithiocarbonate complexes

    International Nuclear Information System (INIS)

    The results obtained by EPR studies on differently substituted bis(R-dithiocarbonato)cooper(II) complexes (where R = ethyl, n-propyl, i-propyl, i butyl, and cellulose), magnetically diluted in Ni(II) and Zn(II) host lattices, as well as supported on the cellulose surface are reported. It is unambiguously shown that trapped sulphur-containing copper(II) complexes are stable for a unlimited period of time whereas in solution they undergo self-redox reaction and turn to Cu(I) and disulphide from the ligands shortly after preparation. The effect of the matrix and remote ligand substituents is clearly demonstrated and explained with the self-association between host and guest complexes. (author)

  4. Final report on Phase II remedial action at the former Middlesex Sampling Plant and associated properties. Volume 2

    International Nuclear Information System (INIS)

    Volume 2 presents the radiological measurement data taken after remedial action on properties surrounding the former Middlesex Sampling Plant during Phase II of the DOE Middlesex Remedial Action Program. Also included are analyses of the confirmatory radiological survey data for each parcel with respect to the remedial action criteria established by DOE for the Phase II cleanup and a discussion of the final status of each property. Engineering details of this project and a description of the associated health physics and environmental monitoring activities are presented in Volume 1

  5. Recurrence Relations for Moments of Order Statistics from the Lindley Distribution with General Multiply Type-II Censored Sample

    Directory of Open Access Journals (Sweden)

    Bander Al-Zahrani

    2014-05-01

    Full Text Available In this paper, we derive the recurrence relations for the moments of function of single and two order statistics from Lindley distribution. We also consider the maximum likelihood estimation (MLE of the parameter of the distribution based on multiply type-II censoring. However maximum likelihood estimator does not have an explicit form for the involved parameter. In order to compute the MLE of the parameter, Monte Carlo simulation is used. A comparative study is presented between classical MLE and MLE from multiply type-II censored sample.

  6. Spectrophotometric determination of Mercury (II by simultaneous micelle mediated extraction through ternary complex formation in water samples

    Directory of Open Access Journals (Sweden)

    Farzin Nekouei

    2014-06-01

    Full Text Available In this study, a micelle mediated extraction procedure for preconcentration of trace quantities of Hg(II as a prior step to its simultaneous spectrophotometric determination has been developed. The method is based on a ternary ion-association of Hg(II, Xylidyl Blue (XB and cationic surfactant (CTAB. Major factors affecting the efficiency of the method has been studied. The limit of detection (LOD under optimum conditions based on 3Sb was 4.65 ng mL-1. The proposed method has been applied for determination of trace amount of mercury in water samples with satisfactory results.

  7. Adult Attachment and Psychotherapy

    OpenAIRE

    Rietzschel, Julia

    2012-01-01

    This thesis explores the association between adult attachment and psychological therapy by examining attachment as an outcome variable of therapy, as well as a predictor of therapy outcome. The literature review systematically explores research that has examined changes in attachment representations during psychological therapy. The purpose of the review is to enhance understanding of change processes in adult attachment and to provide empirical support to the premises of attachment theory. I...

  8. Attachment behavior in rats

    OpenAIRE

    Sigling, H.O.

    2009-01-01

    This thesis describes studies into the rat as an animal model for attachment, along the lines of Bowlby's attachment theory. First, the relation between attachment and human psychopathology is reviewed. The conclusion is that psychopathology is more frequent in insecure attached persons and that there is a relationship between specific types of insecure attachment and specific types of psychiatric disorders. Next, a reinterpretation of the literature on social preference experiments in rodent...

  9. Voltammetric Detection of Mn(II in Blood Sample at C60 and MWCNT Modified Glassy Carbon Electrodes

    Directory of Open Access Journals (Sweden)

    Muhammed M. Radhi

    2010-01-01

    Full Text Available Problem statement: Glassy carbon electrode GCE was modified with different microparticles to increase the efficiency of analysis Mn2+ in blood samples by cyclic voltammetry and applied for the detection of trace Mn(II by oxidation process. Approach: The structure and composition of the modified GCE processed by using Carbon Nanotubes CNT and C60 to produce two modified electrodes CNT/GCE and C60/GCE, to detect a trace Mn2+ by cyclic voltammetry for mouse blood with comparison the best modified electrode for detection the ion by the sensitivity and values of Relative Standard Deviation (RSD in calibration curve. Results: A wide linear range and good repeatability were obtained for Mn2+ detection by CNT/GCE in aqueous KCl as supporting electrolyte at different ratio of KCl: Blood using CNT/GCE and C60/GCE, the relative standard deviation of two modified electrodes are good on CNT/GCE than C60/GCE. Conclusion: The two modified electrodes CNT/GCE and C60/GCE depending on the redox current of Mn(II ions were evaluated by the determination of low concentration of Mn(II in blood samples by cyclic voltammetric method, the most modified electrode to detect the Mn(II in blood is CNT/GCE.

  10. Assessment and modelling of Ni(II) retention by an ion-imprinted polymer: application in natural samples.

    Science.gov (United States)

    Lenoble, Véronique; Meouche, Walid; Laatikainen, Katri; Garnier, Cédric; Brisset, Hugues; Margaillan, André; Branger, Catherine

    2015-06-15

    Three novel Ni(II)-Ion-Imprinted Polymer (IIP) were synthesized by precipitation polymerization of ethylene glycol dimethacrylate (crosslinker) with a complex of nickel(II) and vinylbenzyl iminodiacetic acid (VbIDA). The three IIPs were prepared with various mixtures of porogen solvents: methanol, methanol/2-methoxyethanol and methanol/acetonitrile (IIP1, IIP2 and IIP3, respectively). Non-Imprinted Polymers (NIP1, NIP2 and NIP3) were prepared as control polymers in similar conditions but with pure VbIDA instead of VbIDA-Ni. These polymers were characterized by FTIR, BET, SEM and tested for their efficiency and selectivity in Ni(II) retention. The most efficient (IIP1, around 12 mg g(-1) of nickel) was then positively checked for Ni(II) retention in presence of some competing species over a wide range of concentration. Finally Ni(II) retention by IIP1 was successfully demonstrated in natural samples. The modelling of the different experiments (Langmuir, Freundlich but also PROSECE and WHAM VII, frequently used in environmental studies) allowed demonstrating the presence of completely different binding sites when considering the ion-imprinted polymer and the non-imprinted one, and therefore led to a better understanding of what the imprinting effect is. PMID:25771289

  11. Adult attachment styles

    Directory of Open Access Journals (Sweden)

    Maša Žvelc

    2007-01-01

    Full Text Available Theory of attachment primarily described early relationships between a child and his caretakers. In the last twenty years there is a growing interest in adult attachment research. Theories and research findings of adult attachment stem from two different methodological approaches. The first approach measures adult attachment through Adult Attachment Interview (AAI; Main, 1991 where the attachment is assessed through the narratives of adult people of their early child experiences with their primary caretakers. The second approach measures adult attachment with the help of self-evaluative questionnaires, developed by (a Hazan and Shaver (1987 who started this approach in the field of personality and social psychology, and (b Bartholomew and Horowitz (1991. Research shows that there is significant correlation between early and adult attachment style. Attachment styles are passed from generation to generation. Basic adult attachment styles are: securely attached, preoccupied, fearful-avoidant, dismissing-avoidant and disorganized. Previous research using Barholomew and Horowitz (1991 Relationship Questionnaire on 176 Slovenian students showed that 48% students are securely attached, 29% are fearful-avoidant, 10% are dismissing-avoidant, and 13% have preoccupied attachment style. Theory of attachment is very useful for understanding the behavior and subjective experiences of children and adults. It is applicable to different contexts (psychotherapy, counseling, education .... The paper proposes further research focused on integration of adult attachment styles and types of object relations measured by Test of object relations (Žvelc, 1998 and Pictorial test of Separation and Individuation (Žvelc, 2003.

  12. Magnetic ion-imprinted and –SH functionalized polymer for selective removal of Pb(II) from aqueous samples

    Energy Technology Data Exchange (ETDEWEB)

    Guo, Bin; Deng, Fang [Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063 (China); Zhao, Yu [Technology Center of China Tobacco Hunan Industrial Corporation, Changsha 410007 (China); Luo, Xubiao, E-mail: luoxubiao@126.com [Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063 (China); Luo, Shenglian, E-mail: sllou@hnu.edu.cn [Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063 (China); Au, Chaktong [Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong (China)

    2014-02-15

    A magnetic ion-imprinted polymer (Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP) functionalized with –SH groups for the selective removal of Pb(II) ions from aqueous samples was synthesized by surface imprinting technique combined with a sol–gel process using 3-mercaptopropyl trimethoxysilane as monomer, tetraethyl orthosilicate as cross-linking agent, and Pb(II) ion as template. The Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP was characterized by infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrometry. Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP showed higher capacity and selectivity than that of Fe{sub 3}O{sub 4}@SiO{sub 2}-NIP. The effects of initial concentration of Pb(II) and pH of medium on adsorption capacity of Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP were studied. The experimental data fits well with the Langmuir adsorption isotherm. The maximum Pb(II)-sorption capacity calculated from Langmuir isotherm is 32.58 mg/g and 16.50 mg/g for Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP and Fe{sub 3}O{sub 4}@SiO{sub 2}-NIP, respectively. Kinetics studies show that the adsorption process obeys a pseudo-second-order kinetic model with high correlation coefficient (R{sup 2} = 0.9982). The separation factor of Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP for Pb(II)/Cu(II), Pb(II)/Zn(II), and Pb(II)/Co(II) are 50.54, 52.14, and 37.39, respectively. The adsorption thermodynamic parameters ΔG, ΔH and ΔS were −4.98 kJ/mol, 3.27 kJ/mol and 28.84 J/mol/K, respectively. In addition, the spent Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP can be refreshed by simple washing with aqueous HCl solution, and there is no significant decrease in adsorption capacity after a test of up to five cycles, demonstrating that the Fe{sub 3}O{sub 4}@SiO{sub 2}-IIP is stable and reusable.

  13. Magnetic ion-imprinted and -SH functionalized polymer for selective removal of Pb(II) from aqueous samples

    Science.gov (United States)

    Guo, Bin; Deng, Fang; Zhao, Yu; Luo, Xubiao; Luo, Shenglian; Au, Chaktong

    2014-02-01

    A magnetic ion-imprinted polymer (Fe3O4@SiO2-IIP) functionalized with -SH groups for the selective removal of Pb(II) ions from aqueous samples was synthesized by surface imprinting technique combined with a sol-gel process using 3-mercaptopropyl trimethoxysilane as monomer, tetraethyl orthosilicate as cross-linking agent, and Pb(II) ion as template. The Fe3O4@SiO2-IIP was characterized by infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrometry. Fe3O4@SiO2-IIP showed higher capacity and selectivity than that of Fe3O4@SiO2-NIP. The effects of initial concentration of Pb(II) and pH of medium on adsorption capacity of Fe3O4@SiO2-IIP were studied. The experimental data fits well with the Langmuir adsorption isotherm. The maximum Pb(II)-sorption capacity calculated from Langmuir isotherm is 32.58 mg/g and 16.50 mg/g for Fe3O4@SiO2-IIP and Fe3O4@SiO2-NIP, respectively. Kinetics studies show that the adsorption process obeys a pseudo-second-order kinetic model with high correlation coefficient (R2 = 0.9982). The separation factor of Fe3O4@SiO2-IIP for Pb(II)/Cu(II), Pb(II)/Zn(II), and Pb(II)/Co(II) are 50.54, 52.14, and 37.39, respectively. The adsorption thermodynamic parameters ΔG, ΔH and ΔS were -4.98 kJ/mol, 3.27 kJ/mol and 28.84 J/mol/K, respectively. In addition, the spent Fe3O4@SiO2-IIP can be refreshed by simple washing with aqueous HCl solution, and there is no significant decrease in adsorption capacity after a test of up to five cycles, demonstrating that the Fe3O4@SiO2-IIP is stable and reusable.

  14. Magnetic ion-imprinted and –SH functionalized polymer for selective removal of Pb(II) from aqueous samples

    International Nuclear Information System (INIS)

    A magnetic ion-imprinted polymer (Fe3O4@SiO2-IIP) functionalized with –SH groups for the selective removal of Pb(II) ions from aqueous samples was synthesized by surface imprinting technique combined with a sol–gel process using 3-mercaptopropyl trimethoxysilane as monomer, tetraethyl orthosilicate as cross-linking agent, and Pb(II) ion as template. The Fe3O4@SiO2-IIP was characterized by infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrometry. Fe3O4@SiO2-IIP showed higher capacity and selectivity than that of Fe3O4@SiO2-NIP. The effects of initial concentration of Pb(II) and pH of medium on adsorption capacity of Fe3O4@SiO2-IIP were studied. The experimental data fits well with the Langmuir adsorption isotherm. The maximum Pb(II)-sorption capacity calculated from Langmuir isotherm is 32.58 mg/g and 16.50 mg/g for Fe3O4@SiO2-IIP and Fe3O4@SiO2-NIP, respectively. Kinetics studies show that the adsorption process obeys a pseudo-second-order kinetic model with high correlation coefficient (R2 = 0.9982). The separation factor of Fe3O4@SiO2-IIP for Pb(II)/Cu(II), Pb(II)/Zn(II), and Pb(II)/Co(II) are 50.54, 52.14, and 37.39, respectively. The adsorption thermodynamic parameters ΔG, ΔH and ΔS were −4.98 kJ/mol, 3.27 kJ/mol and 28.84 J/mol/K, respectively. In addition, the spent Fe3O4@SiO2-IIP can be refreshed by simple washing with aqueous HCl solution, and there is no significant decrease in adsorption capacity after a test of up to five cycles, demonstrating that the Fe3O4@SiO2-IIP is stable and reusable.

  15. Quantitation of RNA Polymerase II and Its Transcription Factors in an HeLa Cell: Little Soluble Holoenzyme but Significant Amounts of Polymerases Attached to the Nuclear Substructure

    OpenAIRE

    Kimura, Hiroshi; Tao, Yong; Roeder, Robert G.; Cook, Peter R.

    1999-01-01

    Various complexes that contain the core subunits of RNA polymerase II associated with different transcription factors have been isolated from eukaryotes; their precise molecular constitution depends on the purification procedure. We estimated the numbers of various components of such complexes in an HeLa cell by quantitative immunoblotting. The cells were lysed with saponin in a physiological buffer; ∼140,000 unengaged polymerases (mainly of form IIA) were released. Only ∼4,000 of these solub...

  16. Covalent attachment of diphosphine ligands to glassy carbon electrodes via Cu-catalyzed alkyne-azide cycloaddition. Metallation with Ni(II).

    Science.gov (United States)

    Das, Atanu K; Engelhard, Mark H; Lense, Sheri; Roberts, John A S; Bullock, R Morris

    2015-07-21

    Covalent tethering of P(Ph)2N(C6H4C≡CH)2 ligands (P(Ph)2N(C6H4C≡CH)2 = 1,5-di-(4-ethynylphenyl)-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane) to planar, azide-terminated glassy carbon electrode surfaces has been accomplished using a Cu(I)-catalyzed alkyne-azide cycloaddition (CuAAC) coupling reaction, using a BH3←P protection-deprotection strategy. Deprotected, surface-confined ligands were metallated using [Ni(II)(MeCN)6](BF4)2. X-ray photoelectron spectroscopic measurements demonstrate that metallation introduced 1.3 equivalents Ni(II) per diphosphine onto the electrode surface. Exposure of the surface to a second diphosphine ligand, P(Ph)2N(Ph)2, resulted in the removal of Ni from the surface. Protection, coupling, deprotection, and metallation conditions were optimized using solution-phase model systems, with benzyl azide as a model for the azide-terminated carbon surface; these reactions generate a [Ni(II)(diphosphine)2](2+) complex. PMID:25811536

  17. Dimensional and hierarchical models of depression using the Beck Depression Inventory-II in an Arab college student sample

    OpenAIRE

    Ohaeri Jude U; Al-Turkait Fawziyah A

    2010-01-01

    Abstract Background An understanding of depressive symptomatology from the perspective of confirmatory factor analysis (CFA) could facilitate valid and interpretable comparisons across cultures. The objectives of the study were: (i) using the responses of a sample of Arab college students to the Beck Depression Inventory (BDI-II) in CFA, to compare the "goodness of fit" indices of the original dimensional three-and two-factor first-order models, and their modifications, with the corresponding...

  18. Toward decentralized analysis of mercury (II) in real samples. A critical review on nanotechnology-based methodologies

    International Nuclear Information System (INIS)

    Graphical abstract: -- Highlights: •Several methods based on nanotechnology achieve limit of detections in the pM and nM ranges for mercury (II) analysis. •Most of these methods are validated in filtered water samples and/or spiked samples. •Thiols in real samples constitute an actual competence for any sensor based on the binding of mercury (II) ions. •Future research should include the study of matrix interferences including thiols and dissolved organic matter. -- Abstract: In recent years, it has increased the number of works focused on the development of novel nanoparticle-based sensors for mercury detection, mainly motivated by the need of low cost portable devices capable of giving fast and reliable analytical response, thus contributing to the analytical decentralization. Methodologies employing colorimetric, fluorometric, magnetic, and electrochemical output signals allowed reaching detection limits within the pM and nM ranges. Most of these developments proved their suitability in detecting and quantifying mercury (II) ions in synthetic solutions or spiked water samples. However, the state of art in these technologies is still behind the standard methods of mercury quantification, such as cold vapor atomic absorption spectrometry and inductively coupled plasma techniques, in terms of reliability and sensitivity. This is mainly because the response of nanoparticle-based sensors is highly affected by the sample matrix. The developed analytical nanosystems may fail in real samples because of the negative incidence of the ionic strength and the presence of exchangeable ligands. The aim of this review is to critically consider the recently published innovations in this area, and highlight the needs to include more realistic assays in future research in order to make these advances suitable for on-site analysis

  19. Teaching about World War II: An ERIC/ChESS Sample.

    Science.gov (United States)

    Schlene, Vickie L.

    1991-01-01

    Presents nine documents from the ERIC database dealing with teaching about World War II. Includes articles addressing the lessons of Pearl Harbor, the Holocaust, the wartime internment of Japanese Americans, industry's response to the war, and the moral lessons of Nazism. (SG)

  20. The World War II Homefront: An ERIC/ChESS Sample.

    Science.gov (United States)

    Pinhey, Laura

    2002-01-01

    Provides citations with abstracts from the ERIC database focusing on the U.S. homefront during World War II. Includes background information and teaching materials on topics such as popular music from 1941-1945, propaganda directed towards women, and learning about Japanese American internment. (CMK)

  1. Switchable polarity solvent for liquid phase microextraction of Cd(II) as pyrrolidinedithiocarbamate chelates from environmental samples

    Energy Technology Data Exchange (ETDEWEB)

    Yilmaz, Erkan, E-mail: kimyager_erkan@hotmail.com; Soylak, Mustafa, E-mail: soylak@erciyes.edu.tr

    2015-07-30

    A switchable polarity solvent was synthesized from triethylamine (TEA)/water/CO{sub 2} (Dry ice) via proton transfer reaction has been used for the microextraction of cadmium(II) as pyrrolidinedithiocarbamate (APDC) chelate. Cd(II)-APDC chelate was extracted into the switchable polarity solvent drops by adding 2 mL 10 M sodium hydroxide solution. Analytical parameters affecting the complex formation and microextraction efficiency such as pH, amount of ligand, volume of switchable polarity solvent and NaOH, sample volume were optimized. The effects of foreign ions were found tolerably. Under optimum conditions, the detection limit was 0.16 μg L{sup −1} (3Sb/m, n = 7) and the relative standard deviation was 5.4% (n = 7). The method was validated by the analysis of certified reference materials (TMDA-51.3 fortified water, TMDA-53.3 fortified water and SPS-WW2 waste water, 1573a Tomato Leaves and Oriental Basma Tobacco Leaves (INCT-OBTL-5)) and addition/recovery tests. The method was successfully applied to determination of cadmium contents of water, vegetable, fruit and cigarette samples. - Highlights: • Switchable polarity solvent was synthesized from triethylamine (TEA)/water/CO{sub 2}. • The switchable polarity solvent has been used for the microextraction of cadmium(II). • The important factors were optimized. • The method was applied to determination of cadmium in real samples.

  2. Design of sample carrier for neutron irradiation facility at TRIGA MARK II nuclear reactor

    Science.gov (United States)

    Abdullah, Y.; Hamid, N. A.; Mansor, M. A.; Ahmad, M. H. A. R. M.; Yusof, M. R.; Yazid, H.; Mohamed, A. A.

    2013-06-01

    The objective of this work is to design a sample carrier for neutron irradiation experiment at beam ports of research nuclear reactor, the Reaktor TRIGA PUSPATI (RTP). The sample carrier was designed so that irradiation experiment can be performed safely by researchers. This development will resolve the transferring of sample issues faced by the researchers at the facility when performing neutron irradiation studies. The function of sample carrier is to ensure the sample for the irradiation process can be transferred into and out from the beam port of the reactor safely and effectively. The design model used was House of Quality Method (HOQ) which is usually used for developing specifications for product and develop numerical target to work towards and determining how well we can meet up to the needs. The chosen sample carrier (product) consists of cylindrical casing shape with hydraulic cylinders transportation method. The sample placing can be done manually, locomotion was by wheel while shielding used was made of boron materials. The sample carrier design can shield thermal neutron during irradiation of sample so that only low fluencies fast neutron irradiates the sample.

  3. Design of sample carrier for neutron irradiation facility at TRIGA MARK II nuclear reactor

    International Nuclear Information System (INIS)

    The objective of this work is to design a sample carrier for neutron irradiation experiment at beam ports of research nuclear reactor, the Reaktor TRIGA PUSPATI (RTP). The sample carrier was designed so that irradiation experiment can be performed safely by researchers. This development will resolve the transferring of sample issues faced by the researchers at the facility when performing neutron irradiation studies. The function of sample carrier is to ensure the sample for the irradiation process can be transferred into and out from the beam port of the reactor safely and effectively. The design model used was House of Quality Method (HOQ) which is usually used for developing specifications for product and develop numerical target to work towards and determining how well we can meet up to the needs. The chosen sample carrier (product) consists of cylindrical casing shape with hydraulic cylinders transportation method. The sample placing can be done manually, locomotion was by wheel while shielding used was made of boron materials. The sample carrier design can shield thermal neutron during irradiation of sample so that only low fluencies fast neutron irradiates the sample.

  4. Sample size tables for exact single-stage phase II designs.

    Science.gov (United States)

    A'Hern, R P

    2001-03-30

    Tables for single-phase II trials based on the exact binomial distribution are presented. These are preferable to those generated using Fleming's design, which are based on the normal approximation and can give rise to anomalous results. For example, if the upper success rate is accepted, the lower success rate, which the trial is designed to reject, may be included in the final confidence interval for the proportion being estimated. PMID:11252008

  5. Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. III. Abundances and Velocities for a Sample of 14 Clusters

    Science.gov (United States)

    Parisi, M. C.; Geisler, D.; Clariá, J. J.; Villanova, S.; Marcionni, N.; Sarajedini, A.; Grocholski, A. J.

    2015-05-01

    We obtained spectra of red giants in 15 Small Magellanic Cloud (SMC) clusters in the region of the Ca ii lines with FORS2 on the Very Large Telescope. We determined the mean metallicity and radial velocity with mean errors of 0.05 dex and 2.6 km s-1, respectively, from a mean of 6.5 members per cluster. One cluster (B113) was too young for a reliable metallicity determination and was excluded from the sample. We combined the sample studied here with 15 clusters previously studied by us using the same technique, and with 7 clusters whose metallicities determined by other authors are on a scale similar to ours. This compilation of 36 clusters is the largest SMC cluster sample currently available with accurate and homogeneously determined metallicities. We found a high probability that the metallicity distribution is bimodal, with potential peaks at -1.1 and -0.8 dex. Our data show no strong evidence of a metallicity gradient in the SMC clusters, somewhat at odds with recent evidence from Ca ii triplet spectra of a large sample of field stars. This may be revealing possible differences in the chemical history of clusters and field stars. Our clusters show a significant dispersion of metallicities, whatever age is considered, which could be reflecting the lack of a unique age-metallicity relation in this galaxy. None of the chemical evolution models currently available in the literature satisfactorily represents the global chemical enrichment processes of SMC clusters.

  6. Hubungan Attachment Terhadap Ayah Dengan Kecerdasan Emosi Pada Remaja Laki-Laki

    OpenAIRE

    Asyava, Tengku Shella

    2011-01-01

    Ainsworth (1969) Attachment is the emotional bond that formed an individual with specific other people, they tied Dalan eternal attachment all the time. . Attachments will survive long enough in human life span that begins with the attachment of children to the mother or substitute mother figure (the father) This study aims to determine the relationship attachment (secure attachment, anxious attachment and avoidant attachment) with father male adolescent emotional intelligence male. Sampling ...

  7. Explaining gender differences in preschoolers’ attachment style

    OpenAIRE

    Tønnessen, Ellen

    2014-01-01

    Gender has throughout most attachment literature not been considered an important factor in the development of individual differences in attachment. However, some studies on preschoolers, especially using story completion/narrative measures of attachment representations, have found prominent gender differences. The present study aims to replicate such gender differences, and to examine possible explanatory variables. This will be done by using a large community sample of preschoolers from Nor...

  8. Belt attachment and system

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, Abraham D.; Davidson, Erick M.

    2016-02-02

    Disclosed herein is a belt assembly including a flexible belt with an improved belt attachment. The belt attachment includes two crossbars spaced along the length of the belt. The crossbars retain bearings that allow predetermined movement in six degrees of freedom. The crossbars are connected by a rigid body that attaches to the bearings. Implements that are attached to the rigid body are simply supported but restrained in pitching rotation.

  9. Electron-attachment processes

    International Nuclear Information System (INIS)

    Topics covered include: (1) modes of production of negative ions, (2) techniques for the study of electron attachment processes, (3) dissociative electron attachment to ground-state molecules, (4) dissociative electron attachment to hot molecules (effects of temperature on dissociative electron attachment), (5) molecular parent negative ions, and (6) negative ions formed by ion-pair processes and by collisions of molecules with ground state and Rydberg atoms

  10. Attachment Without Fear

    OpenAIRE

    Bell, David C.

    2009-01-01

    John Bowlby hypothesized an attachment system that interacts with caregiving, exploration, and fear systems in the brain, with a particular emphasis on fear. Neurobiological research confirms many of his hypotheses and also raises some new questions. A psychological model based on this neurobiological research is presented here. The model extends conventional attachment theory by describing additional attachment processes independent of fear. In this model, the attachment elements of trust, o...

  11. Precision Attachment: Retained Overdenture

    OpenAIRE

    Jayasree, K; Mrs.M.Bharathi; Nag, V. Dileep; B. Vinod

    2011-01-01

    Precision attachments are small interlocking devices to connect prosthesis and abutments that offer a variety of solutions to the challenge of balance between functional stability and cosmetic appeal. Precision attachments have wide applications, used in fixed removable bridge, removable partial dentures, overdentures, implant retained overdentures, and maxillofacial prosthesis. Attachment retained overdentures helps in distribution of masticatory forces, minimizes trauma to abutments and sof...

  12. Special Attachments. Module 19.

    Science.gov (United States)

    South Carolina State Dept. of Education, Columbia. Office of Vocational Education.

    This module on special attachments, one in a series dealing with industrial sewing machines, their attachments, and operation, covers four topics: gauges; cording attachment; zipper foot; and hemming, shirring, and binding. For each topic these components are provided: an introduction, directions, an objective, learning activities, student…

  13. An Importance Sampling Scheme on Dual Factor Graphs. II. Models with Strong Couplings

    CERN Document Server

    Molkaraie, Mehdi

    2014-01-01

    We consider the problem of estimating the partition function of the two-dimensional ferromagnetic Ising model in an external magnetic field. The estimation is done via importance sampling in the dual of the Forney factor graph representing the model. We present importance sampling schemes that can efficiently compute an estimate of the partition function in a wide range of model parameters. Emphasis is on models in which a subset of the coupling parameters is strong.

  14. Neutral hydrogen detection survey of dwarf galaxies. II. Faint Virgo dwarfs and a field sample

    International Nuclear Information System (INIS)

    Neutral hydrogen spectra are presented for 53 faint dwarf galaxies in Virgo, completing the Arecibo survey of all late-type dwarfs in the Virgo Cluster Catalog, and for 42 dwarf galaxies from the field sample of Binggeli et al. (1989). For detected galaxies, heliocentric velocities, profile widths, and single-beam fluxes are tabulated. The field sample has been used to investigate the field luminosity function and the clustering of dwarf galaxies vis-a-vis bright galaxies. 31 refs

  15. Periodontal Research: Basics and beyond – Part II (Ethical issues, sampling, outcome measures and bias)

    OpenAIRE

    Haritha Avula

    2013-01-01

    A good research beginning refers to formulating a well-defined research question, developing a hypothesis and choosing an appropriate study design. The first part of the review series has discussed these issues in depth and this paper intends to throw light on other issues pertaining to the implementation of research. These include the various ethical norms and standards in human experimentation, the eligibility criteria for the participants, sampling methods and sample size calculation, vari...

  16. Non-polar halogenated natural products bioaccumulated in marine samples. II. Brominated and mixed halogenated compounds.

    Science.gov (United States)

    Vetter, Walter; Jun, Wu

    2003-07-01

    Several identified and potential natural brominated bioaccumulative compounds were studied in this work. 4,6-dibromo-2-(2('),4(')-dibromo)phenoxyanisole (BC-2) previously detected in Australian marine mammals and isolated from sponges, was synthesized. Two byproducts (a tetrabromo isomer and a tribromo congener) were investigated as well. The byproducts of the synthesis were not identified in the environmental samples investigated. Previously described natural brominated compounds (BC-1, BC-2, BC-3, BC-10, BC-11, MHC-1) and anthropogenic brominated diphenyl ethers (BDE-47, BDE-99, BDE-100, BDE-154) were detected in a sample of human milk. The sample was from a woman from the Faeroe Islands who frequently consumed fish as well as whale blubber and meat. The most abundant compound originated from the natural tetrabromo phenoxyanisole BC-3 which may have a 3:1 distribution of bromine on the two phenyl units. This sample also accumulated a dibromochloroanisole, as well as a previously unknown mixed halogenated compound (MHC-X) and an unknown, most likely aromatic brominated compound. Co-elutions on a DB-5 column were found for BDE-99 and BC-11 as well as BDE-154 and the unknown brominated compound. This suggests that quantification of these two compounds has to be carried out carefully.Two samples of lower trophic level, namely Baltic cod liver and Mexican mussel tissue, were investigated as well. The cod liver samples contained BDE congeners but also abundant signals for the natural 2,3,3('),4,4('),5,5(')-heptachloro-1(')-methyl-1,2(')-bipyrrole Q1 and tribromoanisole (TBA). The mussel sample contained Q1, TBA, another halogenated anisole, BC-1, BC-2, and BC-3, as well as additional, potential natural brominated compounds in the elution range of tribromophenoxyanisoles. PMID:12738265

  17. Measurement of DSM-5 section II personality disorder constructs using the MMPI-2-RF in clinical and forensic samples.

    Science.gov (United States)

    Anderson, Jaime L; Sellbom, Martin; Pymont, Carly; Smid, Wineke; De Saeger, Hilde; Kamphuis, Jan H

    2015-09-01

    In the current study, we evaluated the associations between the Minnesota Multiphasic Personality Inventory-2 Restructured Form (MMPI-2-RF; Ben-Porath & Tellegen, 2008) scale scores and the Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5; American Psychiatric Association, 2013) Section II personality disorder (PD) criterion counts in inpatient and forensic psychiatric samples from The Netherlands using structured clinical interviews to operationalize PDs. The inpatient psychiatric sample included 190 male and female patients and the forensic sample included 162 male psychiatric patients. We conducted correlation and count regression analyses to evaluate the utility of relevant MMPI-2-RF scales in predicting PD criterion count scores. Generally, results from these analyses emerged as conceptually expected and provided evidence that MMPI-2-RF scales can be useful in assessing PDs. At the zero-order level, most hypothesized associations between Section II disorders and MMPI-2-RF scales were supported. Similarly, in the regression analyses, a unique set of predictors emerged for each PD that was generally in line with conceptual expectations. Additionally, the results provided general evidence that PDs can be captured by dimensional psychopathology constructs, which has implications for both DSM-5 Section III specifically and the personality psychopathology literature more broadly. PMID:25799092

  18. I. Enabling Single-Chain Surfactants to Form Vesicles by Nonamphiphilic Liquid Crystals in Water II. Controlling Attachment and Ligand-Mediated Adherence of Candida albicans on Monolayers

    Science.gov (United States)

    Varghese, Nisha

    . Adhesion of C. albicans to a surface is a complex process and is governed by nonspecific attachment or multiple ligand-receptor interactions. The work demonstrates that the multiple ligand-receptor interactions used by C. albicans for adherence to a surface can be individually studied using self-assembled monolayers (SAMs) decorated with minimal motif of the ligands. The SAMs were also used to differentiate between the interactions of the two different morphological forms of C. albicans.. Chapter 5 presents a study on small molecules that were used to inhibit biofilm formed by C. albicans. The acyclic triazoles used in the study were not toxic to the C. albicans and were capable of inhibiting biofilm formed by C. albicans. The acyclic triazole can be used as promising candidates to design new antifungal agents. The chapter also reports the synthesis of squarylated homoserine lactones (SHLs) structural mimics of bacterial acyl homoserine lactones (AHLs) to study the inhibitory effects of SHLs on fungal biofilm. The bacterial AHLs are known to repress the growth of C. albicans and control fungal biofilm in native host environment. The synthesized SHLs were non-toxic to C. albicans and failed to inhibit biofilm formed by C. albicans. . Chapter 6 uses gradient nanotopography combined with controlled surface chemistry to confine bacterial biofilm formed by Escherichia coli. The E. coli biofilm were confined within micrometer sized regions of hydrophobic SAMs surrounded by polyol-terminated SAMs. The study reveals that surface with higher topography enhances the ability of the bioinert SAMs to resist bacterial adherence to surface.

  19. Partner attachment and interpersonal characteristics.

    Science.gov (United States)

    Kilmann, Peter R; Finch, Holmes; Parnell, Michele M; Downer, Jason T

    2013-01-01

    This study investigated partner attachment and interpersonal characteristics in 134 nonclinical couples in long-term marriages. Irrespective of gender, spouses with greater anxiety over abandonment or discomfort with closeness endorsed dysfunctional relationship beliefs to a greater extent. On the anxiety over abandonment dimension, husbands with higher scores were rated less aggressive, less controlling, and more rebellious, whereas wives with higher scores were rated more dependent, more self-critical, and less competitive. Husbands higher on discomfort with closeness were rated less cooperative and responsible and were rated more aggressive and rebellious. Matched secure couples reported lower marital dissatisfaction than matched insecure or mismatched couples. Future research should contrast samples of nonclinical and clinical couples by marital duration to identify specific partner behaviors that are likely to foster marital dissatisfaction within particular attachment pairings. The authors' findings suggest the importance of marital therapists being attuned to the attachment-related beliefs and interpersonal styles uniquely operating within each couple. PMID:23252639

  20. Bayesian Prediction of Future Observations from Inverse Weibull Distribution Based on Type-II Hybrid Censored Sample

    Directory of Open Access Journals (Sweden)

    Sanjay Kumar Singh

    2013-05-01

    Full Text Available In this paper, we have discussed the Bayesian procedure for the prediction of the future samples from inverse Weibull (IW distribution under Type-II hybrid censoring scheme. Bayes estimators along with the corresponding highest posterior density (HPD credible intervals have also been constructed for the parameters of IW distribution. The performance of the Bayes estimators of the model parameters has been compared with the maximum likelihood estimators through Monte Carlo Markov chain (MCMC techniques. Finally, a real data set has been analyzed to illustrate the discussed methodology. Normal 0 false false false EN-IN X-NONE X-NONE

  1. Treatment outcome for a sample of patients with Class II division 1 malocclusion treated at a regional hospital orthodontic department.

    LENUS (Irish Health Repository)

    Burden, D J

    1998-01-01

    This retrospective study assessed the outcome of orthodontic treatment of 264 patients with Class II division 1 malocclusion (overjet greater than 6 mm). The sample comprised patients who had completed their fixed appliance orthodontic treatment at a regional hospital orthodontic unit in the Republic of Ireland. The PAR Index (Peer Assessment Rating) was used to evaluate treatment outcome using before and after treatment study casts. The results revealed that treatment for this particular type of malocclusion was highly effective with a very few patients failing to benefit from their orthodontic treatment.

  2. Attachment bonding of delinquent adolescents

    Directory of Open Access Journals (Sweden)

    Čačić Sandra

    2013-01-01

    Full Text Available Main objective of this research is to define adolescence bonding as well as to identify their typical bonding type. The bonding was observed in two ways. The analysis was based on seven attachment dimensions that were defined by N. Hanak, as well as on the basis of Bartholomew’s four-style attachment model. The research was conducted at multiple sites: two secondary schools in Sombor, the Juvenile Correctional Institution in Kruševac and the Juvenile Correctional Facility in Niš. It included 524 persons, 421 adolescents and 103 delinquents. Adolescents are the second and the third grade students of the Secondary Technical School and the Second­ary School of Economics, while delinquents were testable juveniles. All of them are under correctional measures in the above mentioned institutions. All results are in accordance with the theoretical expectations. Delinquents attach in insecure way more frequently: 68, 9% delinquents from our sample showed insecure attachment. The fearful type of attachment appears to be typical of delinquents. Delinquents are facing difficulties in obtaining support of close persons, as well as in using significant persons they are related to as safe harbours in stressful situations. In addition, they would see themselves as not worthy of attention and love. There is a high level of painful feelings related to childhood and family, as well as ambivalent and nega­tive current family relations.

  3. Attachment as an organizer of behavior: implications for substance abuse problems and willingness to seek treatment

    Directory of Open Access Journals (Sweden)

    Troutman Beth

    2006-11-01

    Full Text Available Abstract Background Attachment theory allows specific predictions about the role of attachment representations in organizing behavior. Insecure attachment is hypothesized to predict maladaptive emotional regulation whereas secure attachment is hypothesized to predict adaptive emotional regulation. In this paper, we test specific hypotheses about the role of attachment representations in substance abuse/dependence and treatment participation. Based on theory, we expect divergence between levels of maladaptive functioning and adaptive methods of regulating negative emotions. Methods Participants for this study consist of a sample of adoptees participating in an ongoing longitudinal adoption study (n = 208. The Semi-Structured Assessment of the Genetics of Alcohol-II 41 was used to determine lifetime substance abuse/dependence and treatment participation. Attachment representations were derived by the Adult Attachment Interview [AAI; 16]. We constructed a prior contrasts reflecting theoretical predictions for the association between attachment representations, substance abuse/dependence and treatment participation. Results Logistic regression was used to test our hypotheses. As predicted, individuals classified as dismissing, preoccupied or earned-secure reported the highest rates of substance abuse/dependence. Individuals classified as dismissing reported significantly lower rates of treatment participation despite their high rates of substance abuse/dependence. As expected, the continuous-secure group reported lowest rates of both substance abuse/dependence and treatment participation. Conclusion The findings from this study identify attachment representations as an influential factor in understanding the divergence between problematic substance use and treatment utilization. The findings further imply that treatment may need to take attachment representations into account to promote successful recovery.

  4. Selection Component Analysis of Natural Polymorphisms using Population Samples Including Mother-Offspring Combinations, II

    DEFF Research Database (Denmark)

    Jarmer, Hanne Østergaard; Christiansen, Freddy Bugge

    1981-01-01

    Population samples including mother-offspring combinations provide information on the selection components: zygotic selection, sexual selection, gametic seletion and fecundity selection, on the mating pattern, and on the deviation from linkage equilibrium among the loci studied. The theory for the...

  5. Selective Solid-Phase Extraction of Zinc(II) from Environmental Water Samples Using Ion Imprinted Activated Carbon.

    Science.gov (United States)

    Moniri, Elham; Panahi, Homayon Ahmad; Aghdam, Khaledeh; Sharif, Amir Abdollah Mehrdad

    2015-01-01

    A simple ion imprinted amino-functionalized sorbent was synthesized by coupling activated carbon with iminodiacetic acid, a functional compound for metal chelating, through cyanoric chloride spacer. The resulting sorbent has been characterized using FTIR spectroscopy, elemental analysis, and thermogravimetric analysis and evaluated for the preconcentration and determination of trace Zn(II) in environmental water samples. The optimum pH value for sorption of the metal ion was 6-7.5. The sorption capacity of the functionalized sorbent was 66.6 mg/g. The chelating sorbent can be reused for 10 cycles of sorption-desorption without any significant change in sorption capacity. A recovery of 100% was obtained for the metal ion with 0.5 M nitric acid as the eluent. Compared with nonimprinted polymer particles, the prepared Zn-imprinted sorbent showed high adsorption capacity, significant selectivity, and good site accessibility for Zn(II). Scatchard analysis revealed that the homogeneous binding sites were formed in the polymer. The equilibrium sorption data of Zn(II) by modified resin were analyzed by Langmuir, Freundlich, Temkin, and Redlich-Peterson models. Based on equilibrium adsorption data, the Langmuir, Freundlich, and Temkin constants were determined as 0.139, 12.82, and 2.34, respectively, at 25°C. PMID:25857899

  6. Attachment theory: A review of research

    Directory of Open Access Journals (Sweden)

    Polovina Nada

    2005-01-01

    Full Text Available Research of attachment is numerous and versatile. They differ according to problems addressed, methodology applied (longitudinal studies, studies with horizontal designs, different instruments used, different methods of data analysis, and characteristics of samples involved (concerning age socio/economic status, family ecology. The research is commonly relied on the core assumptions of the theory itself, and the shared characteristic is orientation to explore complex phenomena of human experience and functioning. From the vast variety of research only those who most directly test the basic assumptions of the attachment theory are focused and addressed in the paper: representation of patterns of attachment in the childhood and adulthood, stability and change of attachment security from infancy to early adulthood, transgenerational transmission of attachment characteristics, the place and the role of attachment behavioral system in the personality development. The aim of the paper is to highlight the basic research and theory issues and directions, and illustrate them with concrete research date.

  7. Copper(II)-rubeanic acid coprecipitation system for separation-preconcentration of trace metal ions in environmental samples for their flame atomic absorption spectrometric determinations

    International Nuclear Information System (INIS)

    A simple and facile preconcentration procedure based on the coprecipitation of trace heavy metal ions with copper(II)-rubeanic acid complex has been developed. The analytical parameters including pH, amounts of rubeanic acid, sample volume, etc. was investigated for the quantitative recoveries of Pb(II), Fe(III), Cd(II), Au(III), Pd(II) and Ni(II). No interferic effects were observed from the concomitant ions. The detection limits for analyte ions by 3 sigma were in the range of 0.14 μg/l for iron-3.4 μg/l for lead. The proposed coprecipitation method was successfully applied to water samples from Palas Lake-Kayseri, soil and sediment samples from Kayseri and Yozgat-Turkey

  8. A 20 GHz Bright Sample for Delta > 72 deg - II. Multi-frequency Follow-up

    CERN Document Server

    Ricci, R; Verma, R; Prandoni, I; Carretti, E; Mack, K -H; Massardi, M; Procopio, P; Zanichelli, A; Gregorini, L; Mantovani, F; Gawronski, M P; Peel, M W

    2013-01-01

    We present follow-up observations at 5, 8 and 30 GHz of the K-band Northern Wide Survey (KNoWS) 20 GHz Bright Sample, performed with the 32-m Medicina Radio Telescope and the 32-m Torun Radio Telescope. The KNoWS sources were selected in the Northern Polar Cap (Delta > 72 deg) and have a flux density limit S(20GHz) = 115 mJy. We include NVSS 1.4 GHz measurements to derive the source radio spectra between 1.4 and 30 GHz. Based on optical identifications, 68 per cent of the sources are QSOs, and 27 per cent are radio galaxies. A redshift measurement is available for 58 per cent of the sources. The radio spectral properties of the different source populations are found to be in agreement with those of other high-frequency selected samples.

  9. BATSE Observations of the Piccinotti Sample of AGN II: Variability and Spectral Analysis

    Science.gov (United States)

    Paciesas, William S.

    2001-01-01

    The Piccinotti sample is the hard x-ray-selected sample of active galactic nuclei (AGNs) best studied at energies below approximately 10 keV. It represents the only unbiased and complete high-energy survey of the sky down to a limiting flux of 3.1 x 10(exp -11) per square erg per second. As such, it has been used to study AGN properties such as X-ray spectral characteristics, log N-log S relation, and luminosity function. The BATSE data provide, for the first time, a systematic coverage of the whole sample at high energies. BATSE data from nearly four years of observations (1993 November - 1997 September) were analyzed using standard BATSE occultation analysis software to extract a signal from sources in the Piccinotti sample. Although the BATSE sensitivity for individual source measurements is relatively poor on short time scales, the near all-sky coverage and long CGRO lifetime allows us to improve our sensitivity considerably by sumrrng data over many years. This significantly reduces our statistical errors at the expense of loss of temporal information. However, the systematic errors associated with the summation of data over such a long period are not negligible, and the study of systematic effects was a major part of our effort. We evaluated two types of systematic error: those affecting the overall normalization (which are important for comparison with other instruments) and those affecting the size of the fluctuations (which are relevant for estimating the confidence level of a detection). The former was studied by comparison of BATSE data with other instruments, primarily CGRO/OSSE. The results indicate that our absolute flux values maybe overestimated by as much as 35% for some sources. However, since this does not affect our estimation of the detection confidence, we made no corrections to our flux estimates.

  10. Electrochemical studies on stress corrosion cracking of incoloy-800 in caustic solution. Part II: Precracking samples

    Directory of Open Access Journals (Sweden)

    Dinu Alice

    2006-01-01

    Full Text Available Stress corrosion cracking (SCC in a caustic medium may affect the secondary circuit tubing of a CANDU NPP cooled with river water, due to an accidental formation of a concentrated alkaline environment in the areas with restricted circulation, as a result of a leakage of cooling water from the condenser. To evaluate the susceptibility of Incoloy-800 (used to manufacture steam generator tubes for CANDU NPP to SCC, some accelerated corrosion tests were conducted in an alkaline solution (10% NaOH, pH = 13. These experiments were performed at ambient temperature and 85 °C. We used the potentiodynamic method and the potentiostatic method, simultaneously monitoring the variation of the open circuit potential during a time period (E corr/time curve. The C-ring method was used to stress the samples. In order to create stress concentrations, mechanical precracks with a depth of 100 or 250 μm were made on the outer side of the C-rings. Experimental results showed that the stressed samples were more susceptible to SCC than the unstressed samples whereas the increase in temperature and crack depth lead to an increase in SCC susceptibility. Incipient micro cracks of a depth of 30 μm were detected in the area of the highest peak of the mechanical precrack.

  11. Dimensional and hierarchical models of depression using the Beck Depression Inventory-II in an Arab college student sample

    Directory of Open Access Journals (Sweden)

    Ohaeri Jude U

    2010-07-01

    Full Text Available Abstract Background An understanding of depressive symptomatology from the perspective of confirmatory factor analysis (CFA could facilitate valid and interpretable comparisons across cultures. The objectives of the study were: (i using the responses of a sample of Arab college students to the Beck Depression Inventory (BDI-II in CFA, to compare the "goodness of fit" indices of the original dimensional three-and two-factor first-order models, and their modifications, with the corresponding hierarchical models (i.e., higher - order and bifactor models; (ii to assess the psychometric characteristics of the BDI-II, including convergent/discriminant validity with the Hopkins Symptom Checklist (HSCL-25. Method Participants (N = 624 were Kuwaiti national college students, who completed the questionnaires in class. CFA was done by AMOS, version 16. Eleven models were compared using eight "fit" indices. Results In CFA, all the models met most "fit" criteria. While the higher-order model did not provide improved fit over the dimensional first - order factor models, the bifactor model (BFM had the best fit indices (CMNI/DF = 1.73; GFI = 0.96; RMSEA = 0.034. All regression weights of the dimensional models were significantly different from zero (P Conclusion The broadly adequate fit of the various models indicates that they have some merit and implies that the relationship between the domains of depression probably contains hierarchical and dimensional elements. The bifactor model is emerging as the best way to account for the clinical heterogeneity of depression. The psychometric characteristics of the BDI-II lend support to our CFA results.

  12. The XXL Survey. II. The bright cluster sample: catalogue and luminosity function

    Science.gov (United States)

    Pacaud, F.; Clerc, N.; Giles, P. A.; Adami, C.; Sadibekova, T.; Pierre, M.; Maughan, B. J.; Lieu, M.; Le Fèvre, J. P.; Alis, S.; Altieri, B.; Ardila, F.; Baldry, I.; Benoist, C.; Birkinshaw, M.; Chiappetti, L.; Démoclès, J.; Eckert, D.; Evrard, A. E.; Faccioli, L.; Gastaldello, F.; Guennou, L.; Horellou, C.; Iovino, A.; Koulouridis, E.; Le Brun, V.; Lidman, C.; Liske, J.; Maurogordato, S.; Menanteau, F.; Owers, M.; Poggianti, B.; Pomarède, D.; Pompei, E.; Ponman, T. J.; Rapetti, D.; Reiprich, T. H.; Smith, G. P.; Tuffs, R.; Valageas, P.; Valtchanov, I.; Willis, J. P.; Ziparo, F.

    2016-06-01

    Context. The XXL Survey is the largest survey carried out by the XMM-Newton satellite and covers a total area of 50 square degrees distributed over two fields. It primarily aims at investigating the large-scale structures of the Universe using the distribution of galaxy clusters and active galactic nuclei as tracers of the matter distribution. The survey will ultimately uncover several hundreds of galaxy clusters out to a redshift of ~2 at a sensitivity of ~10-14 erg s-1 cm-2 in the [0.5-2] keV band. Aims: This article presents the XXL bright cluster sample, a subsample of 100 galaxy clusters selected from the full XXL catalogue by setting a lower limit of 3 × 10-14 erg s-1 cm-2 on the source flux within a 1' aperture. Methods: The selection function was estimated using a mixture of Monte Carlo simulations and analytical recipes that closely reproduce the source selection process. An extensive spectroscopic follow-up provided redshifts for 97 of the 100 clusters. We derived accurate X-ray parameters for all the sources. Scaling relations were self-consistently derived from the same sample in other publications of the series. On this basis, we study the number density, luminosity function, and spatial distribution of the sample. Results: The bright cluster sample consists of systems with masses between M500 = 7 × 1013 and 3 × 1014 M⊙, mostly located between z = 0.1 and 0.5. The observed sky density of clusters is slightly below the predictions from the WMAP9 model, and significantly below the prediction from the Planck 2015 cosmology. In general, within the current uncertainties of the cluster mass calibration, models with higher values of σ8 and/or ΩM appear more difficult to accommodate. We provide tight constraints on the cluster differential luminosity function and find no hint of evolution out to z ~ 1. We also find strong evidence for the presence of large-scale structures in the XXL bright cluster sample and identify five new superclusters. Based on

  13. Average Properties of a Large Sample of z_abs ~ z_em associated Mg II Absorption Line Systems

    CERN Document Server

    Berk, D Vanden; York, D G; Richards, G T; Lundgren, B; Alsayyad, Y; Kulkarni, V P; Subba-Rao, M; Schneider, D P; Heckman, T; Anderson, S; Crotts, A P S; Frieman, J; Stoughton, C; Lauroesch, J T; Hall, P B; Meiksin, A; Steffing, M; Vanlandingham, J

    2008-01-01

    We have studied a sample of 415 associated (z_ab z_em; relative velocity with respect to QSO 3000km/s), so as to understand their origin. From the analysis of the composite spectra, as well as from the comparison of measured equivalent widths in individual spectra, we conclude that the associated Mg II absorbers have higher apparent ionization, measured by the strength of the C IV absorption lines compared to the Mg II absorption lines, than the intervening absorbers. The ionization so measured appears to be related to apparent ejection velocity, being lower as the apparent ejection velocity is more and more positive. There is clear evidence, from the composite spectra, for SMC like dust attenuation in these systems; the 2175AA absorption feature is not present. The extinction is almost twice that observed in the similarly selected sample of intervening systems. We reconfirm that QSOs with non-zero FIRST radio flux are intrinsically redder than the QSOs with no detection in the FIRST survey. The incidence of ...

  14. Psychometric Properties of the Beck Scale for Depression (Beck Depression Inventory BDI-II)--A Study on a Sample of Students in the State of Kuwait Universities

    Science.gov (United States)

    Dahem, Ahmed Mohammed Faleh

    2016-01-01

    The study aimed to identify the psychometric properties of the Beck Depression Inventory (BDI-II) the Arabized version by Gharib (2000); the study sample consisted of 500 male and female students from the Kuwaiti universities by 250 males and 250 females on whom the BDI-II scale was applied twice; the psychometric characteristics such as the…

  15. CHARACTERIZATION OF TANK 16H ANNULUS SAMPLES PART II: LEACHING RESULTS

    Energy Technology Data Exchange (ETDEWEB)

    Hay, M.; Reboul, S.

    2012-06-19

    The closure of Tank 16H will require removal of material from the annulus of the tank. Samples from Tank 16H annulus were characterized and tested to provide information to evaluate various alternatives for removing the annulus waste. The analysis found all four annulus samples to be composed mainly of Si, Na, and Al and lesser amounts of other elements. The XRD data indicate quartz (SiO{sub 2}) and sodium aluminum nitrate silicate hydrate (Na{sub 8}(Al{sub 6}Si{sub 6}O{sub 24})(NO{sub 3}){sub 2}.4H{sub 2}O) as the predominant crystalline mineral phases in the samples. The XRD data also indicate the presence of crystalline sodium nitrate (NaNO{sub 3}), sodium nitrite (NaNO{sub 2}), gibbsite (Al(OH){sub 3}), hydrated sodium bicarbonate (Na{sub 3}H(CO{sub 3}){sub 2}.2H{sub 2}O), and muscovite (KAl{sub 2}(AlSi{sub 3}O{sub 10})(OH){sub 2}). Based on the weight of solids remaining at the end of the test, the water leaching test results indicate 20-35% of the solids dissolved after three contacts with an approximately 3:1 volume of water at 45 C. The chemical analysis of the leachates and the XRD results of the remaining solids indicate sodium salts of nitrate, nitrite, sulfate, and possibly carbonate/bicarbonate make up the majority of the dissolved material. The majority of these salts were dissolved in the first water contact and simply diluted with each subsequent water contact. The water leaching removed large amounts of the uranium in two of the samples and approximately 1/3 of the {sup 99}Tc from all four samples. Most of the other radionuclides analyzed showed low solubility in the water leaching test. The oxalic acid leaching test result indicate approximately 34-47% of the solids in the four annulus samples will dissolve after three contacts with an approximately 3:1 volume of acid to solids at 45 C. The same sodium salts found in the water leaching test comprise the majority of dissolved material in the oxalic acid leaching test. However, the oxalic acid was

  16. SWIFT X-RAY OBSERVATIONS OF CLASSICAL NOVAE. II. THE SUPER SOFT SOURCE SAMPLE

    International Nuclear Information System (INIS)

    The Swift gamma-ray burst satellite is an excellent facility for studying novae. Its rapid response time and sensitive X-ray detector provides an unparalleled opportunity to investigate the previously poorly sampled evolution of novae in the X-ray regime. This paper presents Swift observations of 52 Galactic/Magellanic Cloud novae. We included the X-Ray Telescope (0.3-10 keV) instrument count rates and the UltraViolet and Optical Telescope (1700-8000 Å) filter photometry. Also included in the analysis are the publicly available pointed observations of 10 additional novae the X-ray archives. This is the largest X-ray sample of Galactic/Magellanic Cloud novae yet assembled and consists of 26 novae with Super Soft X-ray emission, 19 from Swift observations. The data set shows that the faster novae have an early hard X-ray phase that is usually missing in slower novae. The Super Soft X-ray phase occurs earlier and does not last as long in fast novae compared to slower novae. All the Swift novae with sufficient observations show that novae are highly variable with rapid variability and different periodicities. In the majority of cases, nuclear burning ceases less than three years after the outburst begins. Previous relationships, such as the nuclear burning duration versus t2 or the expansion velocity of the eject and nuclear burning duration versus the orbital period, are shown to be poorly correlated with the full sample indicating that additional factors beyond the white dwarf mass and binary separation play important roles in the evolution of a nova outburst. Finally, we confirm two optical phenomena that are correlated with strong, soft X-ray emission which can be used to further increase the efficiency of X-ray campaigns.

  17. The Lyman alpha reference sample. II. Hubble space telescope imaging results, integrated properties, and trends

    International Nuclear Information System (INIS)

    We report new results regarding the Lyα output of galaxies, derived from the Lyman Alpha Reference Sample, and focused on Hubble Space Telescope imaging. For 14 galaxies we present intensity images in Lyα, Hα, and UV, and maps of Hα/Hβ, Lyα equivalent width (EW), and Lyα/Hα. We present Lyα and UV radial light profiles and show they are well-fitted by Sérsic profiles, but Lyα profiles show indices systematically lower than those of the UV (n ≈ 1-2 instead of ≳ 4). This reveals a general lack of the central concentration in Lyα that is ubiquitous in the UV. Photometric growth curves increase more slowly for Lyα than the far ultraviolet, showing that small apertures may underestimate the EW. For most galaxies, however, flux and EW curves flatten by radii ≈10 kpc, suggesting that if placed at high-z only a few of our galaxies would suffer from large flux losses. We compute global properties of the sample in large apertures, and show total Lyα luminosities to be independent of all other quantities. Normalized Lyα throughput, however, shows significant correlations: escape is found to be higher in galaxies of lower star formation rate, dust content, mass, and nebular quantities that suggest harder ionizing continuum and lower metallicity. Six galaxies would be selected as high-z Lyα emitters, based upon their luminosity and EW. We discuss the results in the context of high-z Lyα and UV samples. A few galaxies have EWs above 50 Å, and one shows fescLyα of 80%; such objects have not previously been reported at low-z.

  18. Blade attachment assembly

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Crespo, Andres Jose; Delvaux, John McConnell; Miller, Diane Patricia

    2016-05-03

    An assembly and method for affixing a turbomachine rotor blade to a rotor wheel are disclosed. In an embodiment, an adaptor member is provided disposed between the blade and the rotor wheel, the adaptor member including an adaptor attachment slot that is complementary to the blade attachment member, and an adaptor attachment member that is complementary to the rotor wheel attachment slot. A coverplate is provided, having a coverplate attachment member that is complementary to the rotor wheel attachment slot, and a hook for engaging the adaptor member. When assembled, the coverplate member matingly engages with the adaptor member, and retains the blade in the adaptor member, and the assembly in the rotor wheel.

  19. Chandra Cluster Cosmology Project. II. Samples and X-Ray Data Reduction

    DEFF Research Database (Denmark)

    Vikhlinin, A.; Burenin, R. A.; Ebeling, H.;

    2009-01-01

    of relations between the total cluster mass and its X-ray indicators (TX , M gas, and YX ) based on a subsample of low-z relaxed clusters, and present a first measurement of the evolving LX -M tot relation (with M tot estimated from YX ) obtained from a well defined statistically complete cluster sample......We discuss the measurements of the galaxy cluster mass functions at z ≈ 0.05 and z ≈ 0.5 using high-quality Chandra observations of samples derived from the ROSAT PSPC All-Sky and 400 deg2 surveys. We provide a full reference for the data analysis procedures, present updated calibration...... at a fixed mass threshold, e.g., by a factor of 5.0 ± 1.2 at M 500 = 2.5 × 1014 h –1 M sun between z = 0 and 0.5. This evolution reflects the growth of density perturbations, and can be used for the cosmological constraints complementing those from the distance-redshift relation....

  20. THE BULGE RADIAL VELOCITY ASSAY (BRAVA). II. COMPLETE SAMPLE AND DATA RELEASE

    International Nuclear Information System (INIS)

    We present new radial velocity measurements from the Bulge Radial Velocity Assay, a large-scale spectroscopic survey of M-type giants in the Galactic bulge/bar region. The sample of ∼4500 new radial velocities, mostly in the region –10° < l < +10° and b ≈ –6°, more than doubles the existent published data set. Our new data extend our rotation curve and velocity dispersion profile to +20°, which is ∼2.8 kpc from the Galactic center. The new data confirm the cylindrical rotation observed at –6° and –8° and are an excellent fit to the Shen et al. N-body bar model. We measure the strength of the TiOε molecular band as a first step toward a metallicity ranking of the stellar sample, from which we confirm the presence of a vertical abundance gradient. Our survey finds no strong evidence of previously unknown kinematic streams. We also publish our complete catalog of radial velocities, photometry, TiO band strengths, and spectra, which is available at the Infrared Science Archive as well as at UCLA.

  1. Low-energy absorption and luminescence of higher plant photosystem II core samples

    International Nuclear Information System (INIS)

    The charge-separating state of PSII has been recently assigned as a homogeneously broadened band peaking at 705 nm. The possibility of observing emission due to luminescence from the charge-separating state was investigated. Emission from the charge-separating state is predicted to be both broad and substantially Stokes shifted. Our PSII cores show an easily observable and broad emission peaking near 735 nm when excited at 707 nm and beyond for temperatures below 100 K as well as the well-known F685 and F695 nm emission when excited at 633 nm. However, the 735 nm emission bears a close correspondence to that previously reported for the light harvesting pigment of photosystem I (PSI), LHCI-730, and we attribute our observed emission to a minor contamination of our sample with this protein. High sensitivity circular dichroism (CD) spectra establish that LHCI and/or PSI contamination of our samples does not contribute significantly to the absorption seen in the 700-730 nm region. Furthermore, systematic illumination-induced absorption changes seen in this region are shown to quantitatively track with charge separation and the subsequent secondary acceptor plastoquinone (QA) acceptor anion formation. These results confirm that absorption in the 700-730 nm region is associated with the reaction centre of active PSII

  2. The XXL Survey. II. The bright cluster sample: catalogue and luminosity function

    CERN Document Server

    Pacaud, F; Giles, P A; Adami, C; Sadibekova, T; Pierre, M; Maughan, B J; Lieu, M; Fèvre, J -P Le; Alis, S; Altieri, B; Ardila, F; Baldry, I; Benoist, C; Birkinshaw, M; Chiappetti, L; Démoclès, J; Eckert, D; Evrard, A E; Faccioli, L; Gastaldello, F; Guennou, L; Horellou, C; Iovino, A; Koulouridis, E; Brun, V Le; Lidman, C; Liske, J; Maurogordato, S; Menanteau, F; Owers, M; Poggianti, B; Pomarède, D; Pompei, E; Ponman, T J; Rapetti, D; Reiprich, T H; Smith, G P; Tuffs, R; Valageas, P; Valtchanov, I; Willis, J P; Ziparo, F

    2015-01-01

    Context. The XXL Survey is the largest survey carried out by the XMM-Newton satellite and covers a total area of 50 square degrees distributed over two fields. It primarily aims at investigating the large-scale structures of the Universe using the distribution of galaxy clusters and active galactic nuclei as tracers of the matter distribution. Aims. This article presents the XXL bright cluster sample, a subsample of 100 galaxy clusters selected from the full XXL catalogue by setting a lower limit of $3\\times 10^{-14}\\,\\mathrm{erg \\,s^{-1}cm^{-2}}$ on the source flux within a 1$^{\\prime}$ aperture. Methods. The selection function was estimated using a mixture of Monte Carlo simulations and analytical recipes that closely reproduce the source selection process. An extensive spectroscopic follow-up provided redshifts for 97 of the 100 clusters. We derived accurate X-ray parameters for all the sources. Scaling relations were self-consistently derived from the same sample in other publications of the series. On th...

  3. The Lyman alpha Reference Sample: II. HST imaging results, integrated properties and trends

    CERN Document Server

    Hayes, Matthew; Duval, Florent; Sandberg, Andreas; Guaita, Lucia; Melinder, Jens; Adamo, Angela; Schaerer, Daniel; Verhamme, Anne; Orlitová, Ivana; Mas-Hesse, J Miguel; Cannon, John M; Atek, Hakim; Kunth, Daniel; Laursen, Peter; Otí-Floranes, Héctor; Pardy, Stephen; Rivera-Thorsen, Thøger; Herenz, E Christian

    2013-01-01

    We report upon new results regarding the Lya output of galaxies, derived from the Lyman alpha Reference Sample (LARS), focusing on Hubble Space Telescope imaging. For 14 galaxies we present intensity images in Lya, Halpha, and UV, and maps of Halpha/Hbeta, Lya equivalent width (EW), and Lya/Halpha. We present Lya and UV light profiles and show they are well-fitted by S\\'ersic profiles, but Lya profiles show indices systematically lower than those of the UV (n approx 1-2 instead of >~4). This reveals a general lack of the central concentration in Lya that is ubiquitous in the UV. Photometric growth curves increase more slowly for Lya than the FUV, showing that small apertures may underestimate the EW. For most galaxies, however, flux and EW curves flatten by radii ~10 kpc, suggesting that if placed at high-z, only a few of our galaxies would suffer from large flux losses. We compute global properties of the sample in large apertures, and show total luminosities to be independent of all other quantities. Normal...

  4. Infrared thermometry and the crop water stress index. II. Sampling procedures and interpretation

    International Nuclear Information System (INIS)

    Infrared thermometry can be a valuable research and production tool for detecting and quantifying water stress in plants, as shown by a large volume of published research. Users of infrared thermometers (IRT) should be aware of the many equipment, environmental, and plant factors influencing canopy temperature measured by an IRT. The purpose of this paper is to describe factors influencing measured plant temperature, outline sampling procedures that will produce reliable Crop Water Stress Index (CWSI) values, and offer interpretations of CWSI and plant temperatures relative to crop production and other water stress parameters by reviewing previously conducted research. Factors that are considered are IRT condition, configuration, and position; psychrometer location; wind speed; solar radiation; time of day; leaf area and orientation; and appropriate non-water-stressed baseline equation. Standard sampling and CWSI calculation procedures are proposed. Use of CWSI with crops varying in type of response to water stress is described. Previously conducted research on plant temperatures or CWSI is tabulated by crop and water stress parameters measured. The paper provides valuable information to assist interested users of IRTs in making reliable water stress measurements. (author)

  5. The Sorcerer II Global Ocean Sampling Expedition: Expanding theUniverse of Protein Families

    Energy Technology Data Exchange (ETDEWEB)

    Yooseph, Shibu; Sutton, Granger; Rusch, Douglas B.; Halpern,Aaron L.; Williamson, Shannon J.; Remington, Karin; Eisen, Jonathan A.; Heidelberg, Karla B.; Manning, Gerard; Li, Weizhong; Jaroszewski, Lukasz; Cieplak, Piotr; Miller, Christopher S.; Li, Huiying; Mashiyama, Susan T.; Joachimiak, Marcin P.; van Belle, Christopher; Chandonia, John-Marc; Soergel, David A.; Zhai, Yufeng; Natarajan, Kannan; Lee, Shaun; Raphael,Benjamin J.; Bafna, Vineet; Friedman, Robert; Brenner, Steven E.; Godzik,Adam; Eisenberg, David; Dixon, Jack E.; Taylor, Susan S.; Strausberg,Robert L.; Frazier, Marvin; Venter, J.Craig

    2006-03-23

    Metagenomics projects based on shotgun sequencing of populations of micro-organisms yield insight into protein families. We used sequence similarity clustering to explore proteins with a comprehensive dataset consisting of sequences from available databases together with 6.12 million proteins predicted from an assembly of 7.7 million Global Ocean Sampling (GOS) sequences. The GOS dataset covers nearly all known prokaryotic protein families. A total of 3,995 medium- and large-sized clusters consisting of only GOS sequences are identified, out of which 1,700 have no detectable homology to known families. The GOS-only clusters contain a higher than expected proportion of sequences of viral origin, thus reflecting a poor sampling of viral diversity until now. Protein domain distributions in the GOS dataset and current protein databases show distinct biases. Several protein domains that were previously categorized as kingdom specific are shown to have GOS examples in other kingdoms. About 6,000 sequences (ORFans) from the literature that heretofore lacked similarity to known proteins have matches in the GOS data. The GOS dataset is also used to improve remote homology detection. Overall, besides nearly doubling the number of current proteins, the predicted GOS proteins also add a great deal of diversity to known protein families and shed light on their evolution. These observations are illustrated using several protein families, including phosphatases, proteases, ultraviolet-irradiation DNA damage repair enzymes, glutamine synthetase, and RuBisCO. The diversity added by GOS data has implications for choosing targets for experimental structure characterization as part of structural genomics efforts. Our analysis indicates that new families are being discovered at a rate that is linear or almost linear with the addition of new sequences, implying that we are still far from discovering all protein families in nature.

  6. A low-luminosity type-1 QSO sample: II. Overluminous host spheroidals or undermassive black holes?

    CERN Document Server

    Busch, Gerold; Valencia-S., Mónica; Moser, Lydia; Fischer, Sebastian; Eckart, Andreas; Scharwächter, Julia; Gadotti, Dimitri A; Wisotzki, Lutz

    2013-01-01

    Recognizing the properties of the host galaxies of quasi-stellar objects (QSOs) is essential to understand the suspected coevolution of central supermassive black holes (BHs) and their host galaxies. We selected a subsample of the Hamburg/ESO survey for bright UV-excess QSOs, containing only the 99 nearest QSOs with redshift z<=0.06, that are close enough to allow detailed structural analysis. From this "low-luminosity type-1 QSO sample", we observed 20 galaxies and performed aperture photometry and bulge-disk-bar-AGN-decomposition with BUDDA on near-infrared J, H, K band images. From the photometric decomposition of these 20 objects and visual inspection of images of another 26, we find that ~50% of the hosts are disk galaxies and most of them (86%) are barred. Stellar masses, calculated from parametric models based on inactive galaxy colors, range from 2x10^9 M_sun to 2x10^11 M_sun. Black hole masses measured from single epoch spectroscopy range from 1x10^6 M_sun to 5x10^8 M_sun. In comparison to higher ...

  7. The Extended GMRT Radio Halo Survey II: Further results and analysis of the full sample

    CERN Document Server

    Kale, R; Giacintucci, S; Dallacasa, D; Cassano, R; Brunetti, G; Cuciti, V; Macario, G; Athreya, R

    2015-01-01

    The intra-cluster medium contains cosmic rays and magnetic fields that are manifested through the large scale synchrotron sources, termed as radio halos, relics and mini-halos. The Extended Giant Metrewave Radio Telescope (GMRT) Radio Halo Survey (EGRHS) is an extension of the GMRT Radio Halo Survey (GRHS) designed to search for radio halos using GMRT 610/235 MHz observations. The GRHS+EGRHS consists of 64 clusters in the redshift range 0.2 -- 0.4 that have an X-ray luminosity larger than 5x10^44 erg/s in the 0.1 -- 2.4 keV band and with declinations > -31 deg in the REFLEX and eBCS X-ray cluster catalogues. In this second paper in the series, GMRT 610/235 MHz data on the last batch of 11 galaxy clusters and the statistical analysis of the full sample are presented. A new mini-halo in RXJ2129.6+0005 and candidate diffuse sources in Z5247, A2552 and Z1953 are discovered. A unique feature of this survey are the upper limits on the detections of 1 Mpc sized radio halos; 4 new are presented here making a total of...

  8. The X-shooter Lens Survey - II. Sample presentation and spatially resolved kinematics

    CERN Document Server

    Spiniello, C; Trager, S C; Barnabè, M; Treu, T; Czoske, O; Vegetti, S; Bolton, A

    2015-01-01

    We present the X-shooter Lens Survey (XLENS) data. The main goal of XLENS is to disentangle the stellar and dark matter content of massive early-type galaxies (ETGs), through combined strong gravitational lensing, dynamics and spectroscopic stellar population studies. The sample consists of 11 lens galaxies covering the redshift range from $0.1$ to $0.45$ and having stellar velocity dispersions between $250$ and $380\\,\\mathrm{km}\\,\\mathrm{s}^{-1}$. All galaxies have multi-band, high-quality HST imaging. We have obtained long-slit spectra of the lens galaxies with X-shooter on the VLT. We are able to disentangle the dark and luminous mass components by combining lensing and extended kinematics data-sets, and we are also able to precisely constrain stellar mass-to-light ratios and infer the value of the low-mass cut-off of the IMF, by adding spectroscopic stellar population information. Our goal is to correlate these IMF parameters with ETG masses and investigate the relation between baryonic and non-baryonic m...

  9. Coloured solar collectors. Phase II : from laboratory samples to collector prototypes. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Schueler, A.; Roecker, Ch.; Chambrier, E. de; Munari Probst, M.

    2007-07-01

    This illustrated final report for the Swiss Federal Office of Energy (SFOE) deals with the second phase of a project concerning the architectural integration of glazed solar collectors into the facades of buildings for heat production. The factors that limit the integration of photovoltaic panels in facades are discussed. The authors state that, for a convincing demonstration, sufficiently large samples and high quality levels are needed. The sol-gel deposition of the multi-layered coatings on A4-sized glass panes demonstrated in the laboratory by EPFL-LESO are discussed. The coatings produced exhibit a coloured reflection in combination with a high solar transmittance, a homogenous appearance, and are free of visible defects. Film hardening by UV exposure is discussed: This should result in the speeding up of the sol-gel process and thus save energy, thereby significantly reducing costs. Collaboration with industry is discussed in which full-scale glass panes are to be coated with novel multiple layers. The novel glazing is to be integrated into first prototype collectors. The manufacturing and test processes for the prototypes manufactured are discussed in detail.

  10. Analysis of reactivity worths of highly-burnt PWR fuel samples measured in LWR-PROTEUS Phase II

    International Nuclear Information System (INIS)

    The reactivity loss of PWR fuel with burnup has been determined experimentally by inserting fresh and highly-burnt fuel samples in a PWR test lattice in the framework of the LWR-PROTEUS Phase II programme. Seven UO2 samples irradiated in a Swiss PWR plant with burnups ranging from ∼40 to ∼120 MWd/kg and four MOX samples with burnups up to ∼70 MWd/kg were oscillated in a test region constituted of actual PWR UO2 fuel rods in the centre of the PROTEUS zero-power experimental facility. The measurements were analyzed using the CASMO-4E fuel assembly code and a cross section library based on the ENDF/B-VI evaluation. The results show close proximity between calculated and measured reactivity effects and no trend for a deterioration of the quality of the prediction at high burnup. The analysis thus demonstrates the high accuracy of the calculation of the reactivity of highly-burnt fuel. (authors)

  11. Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. III. Abundances and Velocities for a Sample of 14 Clusters

    CERN Document Server

    Parisi, M C; Clariá, J J; Villanova, S; Marcionni, N; Sarajedini, A; Grocholski, A J

    2015-01-01

    We obtained spectra of red giants in 15 Small Magellanic Cloud (SMC) clusters in the region of the CaII lines with FORS2 on the Very Large Telescope (VLT). We determined the mean metallicity and radial velocity with mean errors of 0.05 dex and 2.6 km/s, respectively, from a mean of 6.5 members per cluster. One cluster (B113) was too young for a reliable metallicity determination and was excluded from the sample. We combined the sample studied here with 15 clusters previously studied by us using the same technique, and with 7 clusters whose metallicities determined by other authors are on a scale similar to ours. This compilation of 36 clusters is the largest SMC cluster sample currently available with accurate and homogeneously determined metallicities. We found a high probability that the metallicity distribution is bimodal, with potential peaks at -1.1 and -0.8 dex. Our data show no strong evidence of a metallicity gradient in the SMC clusters, somewhat at odds with recent evidence from CaT spectra of a lar...

  12. Attachment Security and Pain

    DEFF Research Database (Denmark)

    Andersen, Tonny Elmose; Lahav, Yael; Defrin, Ruth;

    2015-01-01

    The present study assesses for the first time, the possible disruption effect of posttraumatic stress symptoms (PTSS) with regard to the protective role of attachment on pain, among ex-POWs. While secure attachment seems to serve as a buffer, decreasing the perception of pain, this function may be...

  13. Convergence and Divergence in Attachment Style Across Male and Female College Students' Friendships and Romantic Relationships

    OpenAIRE

    Van Uitert, Victoria Jean

    2009-01-01

    Attachment representations in friendship and romantic relationship contexts were examined in a sample of 398 college students. Analyses examined patterns of attachment style in both relationship contexts, divergence and convergence in attachment style, and links between attachment representations and negative peer and romantic relationship experiences (i.e., relational and physical victimization and betrayal). The majority of participants reported more secure attachment representations, relat...

  14. IPHAS and the symbiotic stars . II. New discoveries and a sample of the most common mimics

    Science.gov (United States)

    Corradi, R. L. M.; Valentini, M.; Munari, U.; Drew, J. E.; Rodríguez-Flores, E. R.; Viironen, K.; Greimel, R.; Santander-García, M.; Sabin, L.; Mampaso, A.; Parker, Q.; DePew, K.; Sale, S. E.; Unruh, Y. C.; Vink, J. S.; Rodríguez-Gil, P.; Barlow, M. J.; Lennon, D. J.; Groot, P. J.; Giammanco, C.; Zijlstra, A. A.; Walton, N. A.

    2010-01-01

    Context. Knowledge of the total population of symbiotic stars in the Galaxy is important for understanding basic aspects of stellar evolution in interacting binaries and the relevance of this class of objects in the formation of supernovae of type Ia. Aims: In a previous paper, we presented the selection criteria needed to search for symbiotic stars in IPHAS, the INT Hα survey of the Northern Galactic plane. IPHAS gives us the opportunity to make a systematic, complete search for symbiotic stars in a magnitude-limited volume. Methods: Follow-up spectroscopy at different telescopes worldwide of a sample of sixty two symbiotic star candidates is presented. Results: Seven out of nineteen S-type candidates observed spectroscopically are confirmed to be genuine symbiotic stars. The spectral type of their red giant components, as well as reddening and distance, were computed by modelling the spectra. Only one new D-type symbiotic system, out of forty-three candidates observed, was found. This was as expected (see discussion in our paper on the selection criteria). The object shows evidence for a high density outflow expanding at a speed ≥65 km s-1. Most of the other candidates are lightly reddened classical T Tauri stars and more highly reddened young stellar objects that may be either more massive young stars of HAeBe type or classical Be stars. In addition, a few notable objects have been found, such as three new Wolf-Rayet stars and two relatively high-luminosity evolved massive stars. We also found a helium-rich source, possibly a dense ejecta hiding a WR star, which is surrounded by a large ionized nebula. Conclusions: These spectroscopic data allow us to refine the selection criteria for symbiotic stars in the IPHAS survey and, more generally, to better understand the behaviour of different Hα emitters in the IPHAS and 2MASS colour-colour diagrams. Based on observations obtained at; the 2.6 m Nordic Optical Telescope operated by NOTSA; the 2.5 m INT and 4.2 m

  15. Primordial 4He abundance: a determination based on the largest sample of H II regions with a methodology tested on model H II regions

    Science.gov (United States)

    Izotov, Y. I.; Stasińska, G.; Guseva, N. G.

    2013-10-01

    We verified the validity of the empirical method to derive the 4He abundance used in our previous papers by applying it to CLOUDY (v13.01) models. Using newly published He i emissivities for which we present convenient fits as well as the output CLOUDY case B hydrogen and He i line intensities, we found that the empirical method is able to reproduce the input CLOUDY 4He abundance with an accuracy of better than 1%. The CLOUDY output data also allowed us to derive the non-recombination contribution to the intensities of the strongest Balmer hydrogen Hα, Hβ, Hγ, and Hδ emission lines and the ionisation correction factors for He. With these improvements we used our updated empirical method to derive the 4He abundances and to test corrections for several systematic effects in a sample of 1610 spectra of low-metallicity extragalactic H ii regions, the largest sample used so far. From this sample we extracted a subsample of 111 H ii regions with Hβ equivalent width EW(Hβ) ≥ 150 Å, with excitation parameter x = O2+/O ≥ 0.8, and with helium mass fraction Y derived with an accuracy better than 3%. With this subsample we derived the primordial 4He mass fraction Yp = 0.254 ± 0.003 from linear regression Y - O/H. The derived value of Yp is higher at the 68% confidence level (CL) than that predicted by the standard big bang nucleosynthesis (SBBN) model, possibly implying the existence of different types of neutrino species in addition to the three known types of active neutrinos. Using the most recently derived primordial abundances D/H = (2.60 ± 0.12) × 10-5 and Yp = 0.254 ± 0.003 and the χ2 technique, we found that the best agreement between abundances of these light elements is achieved in a cosmological model with baryon mass density Ωbh2 = 0.0234 ± 0.0019 (68% CL) and an effective number of the neutrino species Neff = 3.51 ± 0.35 (68% CL). Based on observations collected at the European Southern Observatory, Chile, programs 073.B-0283(A), 081.C-0113(A

  16. The Harvard/Brown Anxiety Research Project – Phase II (HARP-II): Rationale, methods, and features of the sample at intake

    OpenAIRE

    Weisberg, Risa B.; Beard, Courtney; Dyck, Ingrid; Keller, Martin B.

    2012-01-01

    We describe the rationale, method, and intake demographic and clinical findings of the Harvard/Brown Anxiety Research Project-Phase II (HARP-II). HARP-II is the first prospective, observational, longitudinal study to describe the characteristics and course of anxiety in African American, Latino, and Non-Latino White individuals. Participants met criteria for at least one of the following disorders: Generalized Anxiety Disorder, Social Phobia, Panic Disorder with or without Agoraphobia, Agorap...

  17. Predictors of Child Molestation: Adult Attachment, Cognitive Distortions, and Empathy

    Science.gov (United States)

    Wood, Eric; Riggs, Shelley

    2008-01-01

    A conceptual model derived from attachment theory was tested by examining adult attachment style, cognitive distortions, and both general and victim empathy in a sample of 61 paroled child molesters and 51 community controls. Results of logistic multiple regression showed that attachment anxiety, cognitive distortions, high general empathy but low…

  18. Epistemological Development and Attachment in European College Students

    Science.gov (United States)

    Faria, Carla; Soares, Isabel; Silva, Carolina; Bastos, Alice

    2015-01-01

    Epistemological development and attachment theory have been independent frameworks for understanding psychological development. This study examined the association between epistemological development (using the Measure of Epistemological Reflection) and attachment (using the Adult Attachment Interview) in a sample of 60 pre- and postgraduated…

  19. Continuities and changes in infant attachment patterns across two generations.

    Science.gov (United States)

    Raby, K Lee; Steele, Ryan D; Carlson, Elizabeth A; Sroufe, L Alan

    2015-01-01

    This study examined the intergenerational continuities and changes in infant attachment patterns within a higher-risk longitudinal sample of 55 female participants born into poverty. Infant attachment was assessed using the Strange Situation when participants were 12 and 18 months as well as several decades later with participants' children. Paralleling earlier findings from this sample on the stability of attachment patterns from infancy to young adulthood, results provided evidence for intergenerational continuities in attachment disorganization but not security. Children of adults with histories of infant attachment disorganization were at an increased risk of forming disorganized attachments. Although changes in infant attachment patterns across the two generations were not correlated with individuals' caregiving experiences or interpersonal stresses and supports during childhood and adolescence, higher quality social support during adulthood was associated with intergenerational changes from insecure to secure infant-caregiver attachment relationships. PMID:26213155

  20. Phase II remedial action at the former Middlesex Sampling Plant site and associated properties. Final report. Volume 1

    International Nuclear Information System (INIS)

    The former Middlesex Sampling Plant (MSP) and several adjacent and vicinity properties in Middlesex and Piscataway, New Jersey were designated in 1976 for remedial action under the Formerly Utilized Sites Remedial Action Program (FUSRAP). During the period 1943-55 uranium and thorium ores and concentrates were processed at the plant. Consequently, the plant site and several nearby properties were contaminated with radioactive residues. Phase I work comprised the construction of an impervious asphalt storage pad and drainage system at the former MSP site as well as decontamination of two properties adjacent to the site and three properties in the vicinity. Phase II involved cleanup of low-level radioactive waste that had migrated onto other properties adjacent to the site, the construction of an extension to the waste storage pad, and the installation there of a treatment system for rain runoff. All parcels were cleaned to the remedial action criterion level of 5 pCi/g radium-226 plus background specified by DOE. The effectiveness of the remedial action was corroborated by verification soil sampling, near-surface gamma measurement, and exposure rate measurement. In a subsequent phase or phases, the wastes stored at the site will be removed for permanent disposal and the entire property decontaminated and decommissioned for unrestricted use

  1. Mothers of Securely Attached Children with Autism Spectrum Disorder Are More Sensitive than Mothers of Insecurely Attached Children

    Science.gov (United States)

    Koren-Karie, Nina; Oppenheim, David; Dolev, Smadar; Yirmiya, Nurit

    2009-01-01

    In the current study we examined the links between maternal sensitivity and children's secure attachment in a sample of 45 preschool-age boys with Autism Spectrum Disorders (ASD). We hypothesized that mothers of securely attached children would be more sensitive to their children than mothers of insecurely attached children. Children's attachment…

  2. Romantic adult attachment and basic personality structure

    Directory of Open Access Journals (Sweden)

    Jelena Zeleskov Djoric

    2012-03-01

    Full Text Available The main goal of this study was localization of attachment dimensions in the space described by basic personality traits. Study purported to examine relations between attachment and basic personality structure, in a sample of 203 respondents. Romantic adult attachment was measured by the Experience in Close Relationship Scale, basic personality structure was assessed by the NEO-PI-R personality inventory, and Disintegration, which represents operationalization of Schizotypy as a basic personality trait, was estimated by the Delta 10 test. The results of Principal component analysis showed that attachment dimensions are not separate constructs in relation to basic personality traits. Furthermore, results indicate that attachment dimensions represent emotional dysregulation in close interpersonal relationships, because positive correlations are found between dimensions of Attachment and Mania (.35, Anxiety (.51 and Depression (.55. Negative correlations have been obtained between Attachment and Positive emotions (-.34 and Feelings (-.31. These results suggest that Attachment dimensions should be considered as an expression of basic personality traits in romantic adult's relationships.

  3. Heavy Metals (Mg, Mn, Ni and Sn contamination in Soil Samples of Ahvaz II Industrial Estate of Iran in 2013

    Directory of Open Access Journals (Sweden)

    Soheil l Sobhanardakani

    2016-04-01

    Full Text Available Background & Aims of the Study: Due to the rapid industrial development in Khuzestan province of Iran during recent years, this study was performed to analyze the variation of metals concentrations (Mg, Mn, Ni, and Sn in soil samples of Ahvaz II Industrial estate during the spring season of 2013. Materials & Methods: In this experimental study, 27 topsoil samples were collected from nine stations. The intensity of the soil contamination was evaluated, using a contamination factor (Cf and geo-accumulation index (I-geo. Results:  The mean soil concentrations (in mg kg-1 (dry weight were in ranged within 870-1144 (Mg, 188-300 (Mn, 93-199 (Ni and 9-15 (Sn. The data indicated that the I-geo value for all metals falls in class ‘1’. Also the Cf value for Mg and Mn falls in class ‘0’, the Cf value for Sn falls in class ‘1’ and the Cf value for Ni falls in the classes of ‘1’ and ‘2’. The result of the Pearson correlation showed that there were significant positive associations between all metals. Conclusions: According to the results which were achieved by a cluster analysis, there were significant positive associations among all metals based on Pearson correlation coefficient, especially between Ni and Sn; also both of them with Mn. Because the Ni originates from oil sources it can be resulted that Mn and Sn originate from oil sources, too. Therefore, industrial activities and exploitation of oil reservoirs are the main cause of pollution in that area. Also, it can be concluded that, with increasing the distance from the source of pollution, the accumulation of contaminants in the soil samples decreased.

  4. Sample problems for the novice user of the AMPX-II system. [For generating coupled multigroup neutron--gamma libraries, in FORTRAN IV for IBM 360/91

    Energy Technology Data Exchange (ETDEWEB)

    Ford, W.E. III; Roussin, R.W.; Petrie, L.M.; Diggs, B.R.; Comolander, H.E.

    1979-01-01

    Contents of the IBM version of the APMX system distributed by the Radiation Shielding Information Center (APMX-II) are described. Sample problems which demonstrate the procedure for implementing AMPX-II modules to generate point cross sections; generate multigroup neutron, photon production, and photon interaction cross sections for various transport codes; collapse multigroup cross sections; check, edit, and punch multigroup cross sections; and execute a one-dimensional discrete ordinates transport calculation are detailed. 25 figures, 9 tables.

  5. Attachment and Psychotherapy

    OpenAIRE

    McKay, J.M.

    2010-01-01

    The aim of this study was to explore the relationship between therapy outcome, the therapeutic alliance and both patient and therapist attachment styles. 14 therapists and 27 patients participated. 78.57% (n = 11) therapists and 29.63% (n = 8) patients were classified as securely attached by self-report measures. It was predicted that more patients of secure therapists would show clinically significant improvement as determined by CORE-OM scores. However, 21.05% of patients with a secure atta...

  6. The Relation of Insecure Attachment States of Mind and Romantic Attachment Styles to Adolescent Aggression in Romantic Relationships

    OpenAIRE

    Miga, Erin M.; Hare, Amanda; Allen, Joseph P.; Manning, Nell

    2010-01-01

    The relation of attachment states of mind and self reported attachment relationship styles to romantic partner aggression was examined in a community sample of 93 adolescents. Higher levels of insecure-preoccupied and insecure-dismissing states of mind, as assessed by the Adolescent Attachment Interview at age 14, were predictive, respectively, of perpetration and victimization of psychological aggression in romantic relationships four years later. Partners’ romantic attachment anxiety was li...

  7. 21 CFR 868.5955 - Intermittent mandatory ventilation attachment.

    Science.gov (United States)

    2010-04-01

    ... providing mechanical ventilation at a preset rate. (b) Classification. Class II (performance standards). ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Intermittent mandatory ventilation attachment. 868... mandatory ventilation attachment. (a) Identification. An intermittent mandatory ventilation (IMV)...

  8. Attachment to land

    Directory of Open Access Journals (Sweden)

    Paul Rozin

    2008-04-01

    Full Text Available This is a first study on attachment to national and sacred land and land as a protected value. A measure of attachment to the land of Israel is developed and administered to two groups, Jewish college students in Israel and the United States. Levels of land attachment are high and not significantly different in the two groups, with a great deal of variation. Land may become more important through being inhabited by a group over centuries. This is a positive contagion effect, and is opposed in some cases by negative contagion produced when the ``enemies'' live on the land for some period of time. We demonstrate a significant correlation of positive contagion sensitivity with attachment to the land of Israel. Unlike many other cases of the interaction of positive and negative contagion, negative contagion does not overwhelm positive contagion in the domain of land attachment. We also present evidence for linkages between political positions, religiosity, importance of Israel, Arab aversion, and vulnerability of Israel with attachment to land, but these do not fully account for the contagion effects. A number of significant differences between Israelis and Americans are described.

  9. Application of silica fume as a new SP-extractor for trace determination of Zn(II) and Cd(II) in pharmaceutical and environmental samples by square-wave anodic stripping voltammetry

    Science.gov (United States)

    Ahmed, Salwa A.; Gaber, Ahmed A. Abdel; Rahim, Asmaa M. Abdel

    2015-04-01

    In this work, silica fume (SF) is used as a solid-phase extractor for extraction of Zn(II) and Cd(II) from aqueous solutions. Characterization of SF is performed by Fourier transform infrared, X-ray diffraction, transmission and scanning electron microscopy. The optimum experimental conditions for the two metal ions are investigated using batch and column techniques. The maximum adsorption capacity values are found to be 54.13 and 121.28 mg g-1 at the optimum pH 6.0 and 8.0 for Zn(II) and Cd(II), respectively. The equilibrium data are analyzed using the Langmuir, Freundlich, and Temkin isotherms by nonlinear regression analysis. Also, the kinetics analysis revealed that the overall adsorption process is successfully fitted with the pseudo-second-order model. The method is applied for determination of the target metal ions in pharmaceutical and environmental samples using square-wave anodic stripping voltammetry. The limit of detection (LOD) values are 0.102 and 1.43 × 10-3 mg L-1 for Zn(II) and Cd(II), respectively. The percentage recovery values are 98.8-100.5 % which indicate the success of the proposed method for determination of Zn(II) and Cd(II) without interfering effects.

  10. Cloud point extraction and simultaneous spectrophotometric determination of V(V), Co(II) and Cu(II) ions in water samples by 5-Br-PADAP using partial least squares regression

    International Nuclear Information System (INIS)

    In this work, a new method has been proposed to simultaneously determine V(V), Co(II) and Cu(II) ions from aqueous solution by spectrophotometry after cloud point extraction using partial least squares regression (PLS). The metal ions in 10 ml of aqueous solution (containing 0.2 M sodium acetate buffer solution, pH 3.5) were formed complexes with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP). Then, Triton X-114 (2 %, v/v) was added to the solution. By increasing the temperature of the solution up to 55 deg C, a phase separation occurred. After centrifugation at 3,000 rpm for 10 min, the surfactant-rich phase was dissolved and diluted to 0.5 mL with ethanol. The metal ions were then determined using spectrophotometry. At these optimal extraction and operating conditions, linearity was obeyed in the range 7-300, 3-100 and 15-700 ng mL-1 of V(V), Co(II) and Cu(II), with the detection limit of 2.2, 1.0 and 4.5 ng mL-1, respectively. The relative predictive error for the simultaneous determination of 15 test samples of different concentrations of V(V), Co(II) and Cu(II) was 3.28, 3.64 and 4.04 %, respectively. The root mean square error of prediction for applying the PLS method to 15 synthetic samples in the linear ranges of these metal ions was 3.4, 1.6 and 18.1 ng mL-1. The interference effect of some anions and cations was also tested. The proposed method has been applied successfully to the simultaneous determination of V(V), Co(II) and Cu(II) ions in real matrix samples with the recoveries of 96.75-104.80 %. (author)

  11. Bovine serum albumin-Cu(II) hybrid nanoflowers: An effective adsorbent for solid phase extraction and slurry sampling flame atomic absorption spectrometric analysis of cadmium and lead in water, hair, food and cigarette samples.

    Science.gov (United States)

    Yilmaz, Erkan; Ocsoy, Ismail; Ozdemir, Nalan; Soylak, Mustafa

    2016-02-01

    Herein, the synthesis of bovine serum albumin-Cu(II) hybrid nanoflowers (BSA-NFs) through the building blocks of bovine serum albumin (BSA) and copper(II) ions in phosphate buffered saline (PBS) and their use as adsorbent for cadmium and lead ions are reported. The BSA-NFs, for the first time, were efficiently utilized as novel adsorbent for solid phase extraction (SPE) of cadmium and lead ions in water, food, cigarette and hair samples. The method is based on the separation and pre-concentration of Cd(II) and Pb(II) by BSA-NFs prior to determination by slurry analysis via flame atomic absorption spectrometry (FAAS). The analytes were adsorbed on BSA-NFs under the vortex mixing and then the ion-loaded slurry was separated and directly introduced into the flame AAS nebulizer by using a hand-made micro sample introduction system to eliminate a number of drawbacks. The effects of analytical key parameters, such as pH, amount of BSA-NFs, vortexing time, sample volume, and matrix effect of foreign ions on adsorbing of Cd(II) and Pb(II) were systematically investigated and optimized. The limits of detection (LODs) for Cd(II) and Pb(II) were calculated as 0.37 μg L(-)(1) and 8.8 μg L(-)(1), respectively. The relative standard deviation percentages (RSDs) (N = 5) for Cd(II) and Pb(II) were 7.2%, and 5.0%, respectively. The accuracy of the developed procedure was validated by the analysis of certified reference materials (TMDA-53.3 Fortified Water, TMDA-70 Fortified Water, SPS-WW2 Waste Water, NCSDC-73349 Bush Branches and Leaves) and by addition/recovery analysis. The quantitative recoveries were obtained for the analysis of certified reference materials and addition/recovery tests. The method was successfully applied to the analysis of cadmium and lead in water, food, cigarette and hair samples. PMID:26772130

  12. Isolation and preconcentration of Cd(II) from environmental samples using polypropylene porous membrane in a hollow fiber renewal liquid membrane extraction procedure and determination by FAAS

    International Nuclear Information System (INIS)

    The use of polypropylene porous membrane in a hollow fiber renewal liquid membrane (HFRLM) procedure for determination of Cd(II) in water samples was assessed. Ammonium O,O-diethyl dithiophosphate (DDTP) was used to complex cadmium (II) in an acid medium to obtain a neutral hydrophobic complex. The organic solvent introduced to the sample extracts this complex from the aqueous solution and carries it over the polypropylene membrane porous. The organic solvent is immobilized inside the polypropylene membrane porous, leading to an homogeneous phase. The complex strips the lumen of the membrane where, at higher pH, the complex Cd-DDTP is broken down and Cd(II) is released into the stripping phase. EDTA was used to complex the cadmium (II), helping to trap the analyte in the stripping phase. The optimized variables were: sample pH, DDTP concentration, stripping pH, EDTA concentration, extraction temperature and time, extractor solvent and addition of salt to saturate the sample. The sample volume used was 15 mL and the stripping volume was 165 μL. The analyte enrichment factor was 107, limit of detection 1.5 μg L-1, relative standard deviation 4.0% (15 μg L-1, n = 7) and the working linear range 5-30 μg L-1.

  13. Multipurpose hooks for elastic attachment

    Directory of Open Access Journals (Sweden)

    Siddharth Shashidhar Revankar

    2014-01-01

    Full Text Available As certain bracket systems do not include hooks on premolar brackets for elastic attachment, Kobayashi or custom made ligature hooks have proven as an alternative. However, these hooks tend to bend labially when used with heavy elastics and these elastics can even pop loose from the hooks on mouth opening. The following article describes an innovative multipurpose hook which is simple, stiff and inexpensive and can be used for engagement of class II elastics on premolars in case of missing molars as well as engagement of intermaxillary elastics for settling of occlusion in finishing stages. As the hooks can be prefabricated, this saves a lot of chair side time and is more practical for use in day-to-day orthodontic practice.

  14. Fuel rod attachment system

    International Nuclear Information System (INIS)

    A reusable system for removably attaching a nuclear reactor fuel rod to a support member. A locking cap is secured to the fuel rod and a locking strip is fastened to the support member or vice versa. The locking cap has two opposing fingers and shaped to form a socket having a body portion. The locking strip has an extension shaped to rigidly attach to the socket's body portion. The locking cap's fingers are resiliently deflectable. For attachment, the locking cap is longitudinally pushed onto the locking strip causing the extension to temporarily deflect open the fingers to engage the socket's body portion. For removal, the process is reversed. In an alternative embodiment, the cap is rigid and the strip is transversely resiliently compressible. (author)

  15. Pain, Affect, and Attachment

    Directory of Open Access Journals (Sweden)

    Carl Eduard Scheidt

    2015-03-01

    Full Text Available Various psychodynamic processes may underlie the development of psychogenic pain disorder such as conversion, the displacement of affect, or narcissistic defenses. However, many of the processes suggested are related to a disorder of affect regulation. The term affect regulation in psychoanalytic literature refers to phenomena which are often described by the concept of alexithymia. Empirical observations suggest that alexithymia is correlated to insecure attachment, especially an insecure dismissing representation of attachment. Psychodynamic psychotherapy in psychogenic pain disorder should focus on the reintegration of split-off affects which may provoke intensive counter-transference and which in order to be used therapeutically must be linked to attachment experiences within and outside of the therapeutic relationship.

  16. Selective chemosensor for Hg(II) ions based on tris[2-(4-phenyldiazenyl)phenylaminoethoxy]cyclotriveratrylene in aqueous samples

    NARCIS (Netherlands)

    Nuriman,; Kuswandi, Bambang; Verboom, Willem

    2009-01-01

    A novel chemosensor, based on tris[2-(4-phenyldiazenyl)phenylaminoethoxy]cyclotriveratrylene (TPPECTV) as chromophore, has been developed for the colorimetric determination and visual detection of Hg(II) ions. TPPECTV exhibits a pronounced chromogenic behavior toward Hg(II) ions by changing the colo

  17. TOXIC SUBSTANCES FROM COAL COMBUSTION--A COMPREHENSIVE ASSESSMENT, PHASE II: ELEMENT MODES OF OCCURRENCE FOR THE OHIO 5/6/7, WYODAK AND NORTH DAKOTA COAL SAMPLES

    Energy Technology Data Exchange (ETDEWEB)

    Allan Kolker; Stanley J. Mroczkowski; Curtis A. Palmer; Kristen O. Dennen; Robert B. Finkelman; John H. Bullock Jr.

    2002-05-30

    This study reports on the second phase (Phase II) of USGS research activities in support of DOE contract DE-AC22-95PC95101 ''Toxic Substances From Coal Combustion--A Comprehensive Assessment'', funded under DOE Interagency Agreement DE-AI22-95PC95145. The purpose of the study was to provide a quantitative and semi-quantitative characterization of the modes of occurrence of trace elements in coal samples investigated under Phase II, including (1) Ohio 5/6/7, an Ohio bituminous coal sample blended from the No.5, No.6, and No.7 beds; (2) North Dakota, a lignite sample from the Falkirk Mine, Underwood, ND, and (3) Wyodak, a sub-bituminous coal sample from the Cordero Mine, Gillette, WY. Samples from these coal beds were selected for their range in rank and commercial applicability. Results of this research provide basic information on the distribution of elements in Phase II coal samples, information needed for development of a commercial predictive model for trace-element behavior during coal combustion.

  18. The Harvard/Brown Anxiety Research Project-Phase II (HARP-II): rationale, methods, and features of the sample at intake.

    Science.gov (United States)

    Weisberg, Risa B; Beard, Courtney; Dyck, Ingrid; Keller, Martin B

    2012-05-01

    We describe the rationale, method, and intake demographic and clinical findings of the Harvard/Brown Anxiety Research Project-Phase II (HARP-II). HARP-II is the first prospective, observational, longitudinal study to describe the characteristics and course of anxiety in African American, Latino, and Non-Latino White individuals. Participants met criteria for at least one of the following disorders: Generalized Anxiety Disorder, Social Phobia, Panic Disorder with or without Agoraphobia, Agoraphobia without history of Panic Disorder, Post-traumatic Stress Disorder. Initial intake data, collected between 2004 and 2011, are presented for 165 African American, 150 Latino, and 172 Non-Latino White participants. Participants evidenced substantial psychiatric comorbidity (mean number of Axis I disorders=3.4), and moderate to severe symptoms and functional impairment. HARP-II will examine clinical course, in the context of potential socio-cultural and individual moderators (e.g., discrimination, acculturation, negative affect). Results should lead to improved understanding, prognostics, and treatment of anxiety in diverse populations. PMID:22410095

  19. Tripodal chelating ligand-based sensor for selective determination of Zn(II) in biological and environmental samples

    Energy Technology Data Exchange (ETDEWEB)

    Kumar Singh, Ashok; Mehtab, Sameena; Singh, Udai P.; Aggarwal, Vaibhave [Indian Institute of Technology-Roorkee, Department of Chemistry, Roorkee (India)

    2007-08-15

    Potassium hydrotris(N-tert-butyl-2-thioimidazolyl)borate [KTt{sup t-Bu}] and potassium hydrotris(3-tert-butyl-5-isopropyl-l-pyrazolyl)borate [KTp{sup t-Bu,i-Pr}] have been synthesized and evaluated as ionophores for preparation of a poly(vinyl chloride) (PVC) membrane sensor for Zn(II) ions. The effect of different plasticizers, viz. benzyl acetate (BA), dioctyl phthalate (DOP), dibutyl phthalate (DBP), tributyl phosphate (TBP), and o-nitrophenyl octyl ether (o-NPOE), and the anion excluders sodium tetraphenylborate (NaTPB), potassium tetrakis(p-chlorophenyl)borate (KTpClPB), and oleic acid (OA) were studied to improve the performance of the membrane sensor. The best performance was obtained from a sensor with a of [KTt{sup t-Bu}] membrane of composition (mg): [KTt{sup t-Bu}] (15), PVC (150), DBP (275), and NaTPB (4). This sensor had a Nernstian response (slope, 29.4 {+-} 0.2 mV decade of activity) for Zn{sup 2+} ions over a wide concentration range (1.4 x 10{sup -7} to 1.0 x 10{sup -1} mol L{sup -1}) with a limit of detection of 9.5 x 10{sup -8} mol L{sup -1}. It had a relatively fast response time (12 s) and could be used for 3 months without substantial change of the potential. The membrane sensor had very good selectivity for Zn{sup 2+} ions over a wide variety of other cations and could be used in a working pH range of 3.5-7.8. The sensor was also found to work satisfactorily in partially non-aqueous media and could be successfully used for estimation of zinc at trace levels in biological and environmental samples. (orig.)

  20. Tripodal chelating ligand-based sensor for selective determination of Zn(II) in biological and environmental samples.

    Science.gov (United States)

    Singh, Ashok Kumar; Mehtab, Sameena; Singh, Udai P; Aggarwal, Vaibhave

    2007-08-01

    Potassium hydrotris(N-tert-butyl-2-thioimidazolyl)borate [KTtt-Bu] and potassium hydrotris(3-tert-butyl-5-isopropyl-l-pyrazolyl)borate [KTpt-Bu,i-Pr] have been synthesized and evaluated as ionophores for preparation of a poly(vinyl chloride) (PVC) membrane sensor for Zn(II) ions. The effect of different plasticizers, viz. benzyl acetate (BA), dioctyl phthalate (DOP), dibutyl phthalate (DBP), tributyl phosphate (TBP), and o-nitrophenyl octyl ether (o-NPOE), and the anion excluders sodium tetraphenylborate (NaTPB), potassium tetrakis(p-chlorophenyl)borate (KTpClPB), and oleic acid (OA) were studied to improve the performance of the membrane sensor. The best performance was obtained from a sensor with a of [KTtt-Bu] membrane of composition (mg): [KTtt-Bu] (15), PVC (150), DBP (275), and NaTPB (4). This sensor had a Nernstian response (slope, 29.4+/-0.2 mV decade of activity) for Zn2+ ions over a wide concentration range (1.4x10(-7) to 1.0x10(-1) mol L(-1)) with a limit of detection of 9.5x10(-8) mol L(-1). It had a relatively fast response time (12 s) and could be used for 3 months without substantial change of the potential. The membrane sensor had very good selectivity for Zn2+ ions over a wide variety of other cations and could be used in a working pH range of 3.5-7.8. The sensor was also found to work satisfactorily in partially non-aqueous media and could be successfully used for estimation of zinc at trace levels in biological and environmental samples. PMID:17622519

  1. Cadmium (II) imprinted 3-mercaptopropyltrimethoxysilane coated stir bar for selective extraction of trace cadmium from environmental water samples followed by inductively coupled plasma mass spectrometry detection

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Nan [Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072 (China); Hu Bin, E-mail: binhu@whu.edu.cn [Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072 (China)

    2012-04-20

    Graphical abstract: Ion imprinted 3-mercaptopropyltrimethoxysilane (MPTS) coated stir bar for selective extraction of trace Cd(II). Highlights: Black-Right-Pointing-Pointer Ion imprinted polymers were proposed as the coating for SBSE for the first time. Black-Right-Pointing-Pointer Cd(II) imprinted MPTS-silica coating was prepared by a double-imprinting concept. Black-Right-Pointing-Pointer A novel method of SBSE-ICP-MS was developed for the determination of Cd in waters. Black-Right-Pointing-Pointer This method is rapid, selective, sensitive and applicable for determining trace Cd(II) in waters. - Abstract: Cd(II) imprinted 3-mercaptopropyltrimethoxysilane (MPTS)-silica coated stir bar was prepared by sol-gel technique combining with a double-imprinting concept for the first time and was employed for stir bar sorptive extraction (SBSE) of trace Cd(II) from water samples followed by inductively coupled plasma mass spectrometry (ICP-MS) detection. A tetramethoxysilane (TMOS) coating was first in situ created on the glass bar surface. Afterward, a sol solution containing MPTS as the functional precursor, ethanol as the solvent and both Cd(II) and surfactant micelles (cetyltrimethylammonium bromide, CTAB) as the template was again coated on the TMOS bar. The structures of the stir bar coating were characterized by FT-IR spectroscopy. Round-bottom vial was used for the extraction of Cd(II) by SBSE to avoid abrasion of stir bar coatings. The factors affecting the extraction of Cd(II) by SBSE such as pH, stirring rate and time, sample/elution volume and interfering ions have been investigated in detail, and the optimized experimental parameters were obtained. Under the optimized conditions, the adsorption capacities of non-imprinted and imprinted coating stir bars were found to be 0.5 {mu}g and 0.8 {mu}g bar{sup -1}. The detection limit (3{sigma}) based on three times standard deviations of the method blanks by 7 replicates was 4.40 ng L{sup -1} and the relative standard

  2. Attachment and Personality Disorders

    Science.gov (United States)

    Sinha, Preeti; Sharan, Pratap

    2007-01-01

    Personality disorders (PDs) arise from core psychopathology of interpersonal relationships and understanding of self and others. The distorted representations of self and others, as well as unhealthy relationships that characterize persons with various PDs, indicate the possibility that persons with PDs have insecure attachment. Insecure…

  3. MOWER ATTACHMENT NOISE

    OpenAIRE

    Mosdzianowski, G.

    1990-01-01

    The noise produced by grass mowing attachments fitted to small tractors and combining a number of rotary blades with a total cutting width of up to 120 cm was investigated. The paper develops a noise reduction concept based on an analysis of sound sources.

  4. EXPLAINING THE [C II]157.7 μm DEFICIT IN LUMINOUS INFRARED GALAXIES—FIRST RESULTS FROM A HERSCHEL/PACS STUDY OF THE GOALS SAMPLE

    International Nuclear Information System (INIS)

    We present the first results of a survey of the [C II]157.7 μm emission line in 241 luminous infrared galaxies (LIRGs) comprising the Great Observatories All-sky LIRG Survey (GOALS) sample, obtained with the PACS instrument on board the Herschel Space Observatory. The [C II] luminosities, L[CII], of the LIRGs in GOALS range from ∼107 to 2 × 109 L☉. We find that LIRGs show a tight correlation of [C II]/FIR with far-IR (FIR) flux density ratios, with a strong negative trend spanning from ∼10–2 to 10–4, as the average temperature of dust increases. We find correlations between the [C II]/FIR ratio and the strength of the 9.7 μm silicate absorption feature as well as with the luminosity surface density of the mid-IR emitting region (ΣMIR), suggesting that warmer, more compact starbursts have substantially smaller [C II]/FIR ratios. Pure star-forming LIRGs have a mean [C II]/FIR ∼ 4 × 10–3, while galaxies with low polycyclic aromatic hydrocarbon (PAH) equivalent widths (EWs), indicative of the presence of active galactic nuclei (AGNs), span the full range in [C II]/FIR. However, we show that even when only pure star-forming galaxies are considered, the [C II]/FIR ratio still drops by an order of magnitude, from 10–2 to 10–3, with ΣMIR and ΣIR, implying that the [C II]157.7 μm luminosity is not a good indicator of the star formation rate (SFR) for most local LIRGs, for it does not scale linearly with the warm dust emission most likely associated to the youngest stars. Moreover, even in LIRGs in which we detect an AGN in the mid-IR, the majority (2/3) of galaxies show [C II]/FIR ≥ 10–3 typical of high 6.2 μm PAH EW sources, suggesting that most AGNs do not contribute significantly to the FIR emission. We provide an empirical relation between the [C II]/FIR and the specific SFR for star-forming LIRGs. Finally, we present predictions for the starburst size based on the observed [C II] and FIR luminosities which should be useful for comparing

  5. Attachment of Adolescents to Parents: Turkey Profile

    Directory of Open Access Journals (Sweden)

    Turkan Dogan

    2016-12-01

    Full Text Available The present study aims to determine the attachment of adolescents to their parents according to geographical regions in Turkey and gender. The research group consisted of 6061 adolescents. With an age average of 15.53 years. The Inventory of Attachment to Parents and Friends- Brief Form (EABE was used as data acquisition tool. The results of the study indicated significant difference between the scores of students regarding the inventory of attachment to parents according to regions. Evaluating the findings regarding attachment to father and mother together, the findings were similar, and the attachment levels of adolescents in Middle Anatolia, Eastern Anatolia and Black Sea Region were found to be higher than the ones in other regions. This result may be related with socioeconomic, geographical and cultural structures of the regions. Examining the finding according to gender variable, the scores of male students are significantly lower than the scores of female students. As a result according to the data gained from a wide sample group; the main factors for the attachment of adolescents to their parents in Turkey are the geographical regions in Turkey and the gender. [Psikiyatride Guncel Yaklasimlar - Current Approaches in Psychiatry 2016; 8(4.000: 406-419

  6. Mediators of the Link Between Adult Attachment and Mindfulness

    Directory of Open Access Journals (Sweden)

    Jon G. Caldwell

    2013-12-01

    Full Text Available The capacity to be mindfully aware of the present moment without judgment is associated with a number of positive psychological and physiological outcomes. Experiences in attachment relationships are related to specific cognitive-emotional patterns that may contribute to dispositional mindfulness. A sample of adults (N = 93 completed questionnaires regarding adult attachment, rumination, thought suppression, attentional control, and mindfulness. Attachment-related avoidance predicted lower levels of mindfulness, a relation mediated by thought suppression and poorer attentional control. Attachment-related anxiety also predicted lower levels of mindfulness, a relation mediated by rumination and poorer attentional control. The results suggest that in the context of insecure attachment relationships thought suppression and rumination defend against personal and interpersonal losses by deactivating (in the case of avoidance or hyperactivating (in the case of anxiety the attachment system. These habitual defensive patterns may be important links between adult attachment orientations and mindfulness.

  7. Turbine nozzle attachment system

    Science.gov (United States)

    Norton, Paul F.; Shaffer, James E.

    1995-01-01

    A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The nozzle guide vane assembly includes a pair of legs extending radially outwardly from an outer shroud and a pair of mounting legs extending radially inwardly from an inner shroud. Each of the pair of legs and mounting legs have a pair of holes therein. A plurality of members attached to the gas turbine engine have a plurality of bores therein which axially align with corresponding ones of the pair of holes in the legs. A plurality of pins are positioned within the corresponding holes and bores radially positioning the nozzle guide vane assembly about a central axis of the gas turbine engine.

  8. Pain, Affect, and Attachment

    OpenAIRE

    Carl Eduard Scheidt; Elisabeth Waller

    2015-01-01

    Various psychodynamic processes may underlie the development of psychogenic pain disorder such as conversion, the displacement of affect, or narcissistic defenses. However, many of the processes suggested are related to a disorder of affect regulation. The term affect regulation in psychoanalytic literature refers to phenomena which are often described by the concept of alexithymia. Empirical observations suggest that alexithymia is correlated to insecure attachment, especially an insecure di...

  9. Estimation of Manganese (II From Water, Food And Pharmaceutical Samples Using 1-Phenyl-1-Hydrazonyl-2-Oximino Propane –1, 2 –Dione Reagent

    Directory of Open Access Journals (Sweden)

    S P Tekale and S K Lingayat

    2011-06-01

    Full Text Available Determination of Manganese (II was carried out using 1-phenyl-1-hydrazonyl-2-oximino propane-1, 2-dione (HPHOPD reagent by extractive spectrophotometric method. HPHOPD reagent formed a complex with Manganese (II. A systematic study for optimum extraction conditions has been carried out. Maximum extraction was obtained using chloroform as an organic phase at pH 7.8. Extracted species has absorption maxima at 430 nm and obeyed Beer’s law over the range 1-100 ppm of Manganese. The molar absorptivity at this wave length is 0.89 × 103 liters mole”1 cm”1. The proposed method was selective for Manganese (II and was successfully applied to determine its content in water, food, alcohol beverage and pharmaceutical samples.

  10. Simple hollow fiber renewal liquid membrane extraction method for pre-concentration of Cd(II) in environmental samples and detection by Flame Atomic Absorption Spectrometry

    International Nuclear Information System (INIS)

    A hollow fiber renewal liquid membrane (HFRLM) extraction method to determine cadmium (II) in water samples using Flame Atomic Absorption Spectrometry (FAAS) was developed. Ammonium O,O-diethyl dithiophosphate (DDTP) was used to complex cadmium (II) in an acid medium to obtain a neutral hydrophobic complex (ML2). The organic solvent introduced to the sample extracts this complex from the aqueous solution and carries it over the poly(dimethylsiloxane) (PDMS) membrane, that had their walls previously filled with the same organic solvent. The organic solvent is solubilized inside the PDMS membrane, leading to a homogeneous phase. The complex strips the lumen of the membrane where, at higher pH, the complex Cd-DDTP is broken down and cadmium (II) is released into the stripping phase. EDTA was used to complex the cadmium (II), helping to trap the analyte in the stripping phase. A multivariate procedure was used to optimize the studied variables. The optimized variables were: sample (donor phase) pH 3.25, DDTP concentration 0.05% (m/v), stripping (acceptor phase) pH 8.75, EDTA concentration 1.5 x 10-2 mol L-1, extraction temperature 40 deg. C, extraction time 40 min, a solvent mixture N-butyl acetate and hexane (60/40%, v/v) with a volume of 100 μL, and addition of ammonium sulfate to saturate the sample. The sample volume used was 20 mL and the stripping volume was 165 μL. The analyte enrichment factor was 120, limit of detection (LOD) 1.3 μg L-1, relative standard deviation (RSD) 5.5% and the working linear range 2-30 μg L-1.

  11. Universally Rigid Framework Attachments

    CERN Document Server

    Ratmanski, Kiril

    2010-01-01

    A framework is a graph and a map from its vertices to R^d. A framework is called universally rigid if there is no other framework with the same graph and edge lengths in R^d' for any d'. A framework attachment is a framework constructed by joining two frameworks on a subset of vertices. We consider an attachment of two universally rigid frameworks that are in general position in R^d. We show that the number of vertices in the overlap between the two frameworks must be sufficiently large in order for the attachment to remain universally rigid. Furthermore, it is shown that universal rigidity of such frameworks is preserved even after removing certain edges. Given positive semidefinite stress matrices for each of the two initial frameworks, we analytically derive the PSD stress matrices for the combined and edge-reduced frameworks. One of the benefits of the results is that they provide a general method for generating new universally rigid frameworks.

  12. Attachment disorganization in different clinical groups: What underpins unresolved attachment?

    OpenAIRE

    Juen Florian; Arnold Lisa; Meissner Dominik; Nolte Tobias; Buchheim Anna

    2013-01-01

    This paper summarizes findings and clinical implications of research on attachment disorganization in diverse clinical groups. Disorganized/unresolved attachment is overrepresented in these groups compared to healthy control participants, but disorder specific characteristics of this attachment pattern are still poorly understood. The focus of this study was to explore defensive processes in participants whose narratives were classified as disorganized/unresolved using the Adult Attach...

  13. International Mars Architecture for the Return of Samples (iMARS) Phase II Science Subteam Report - Science Management of Returned Samples

    Science.gov (United States)

    Haltigin, T.; Smith, C. L.

    2014-12-01

    The International Mars Exploration Working Group (IMEWG) chartered an iMARS working group in 2007 to develop a plan for an international Mars Sample Return (MSR) mission potentially occurring in the timeframe 2018-2023. In early 2014, IMEWG reconstituted iMARS with the objectives of elaborating on the scientific management aspects of returned martian samples and incorporating technical developments since 2008 including NASA's Mars Science Laboratory and planned Mars2020 mission and ESA's partnership and progress with Roscosmos on ExoMars. In this discussion, the iMARS science subteam describe their approach and some preliminary organizational and operational models for a fully international sample-science management paradigm.Scientific management of the samples - from reception on Earth to distribution amongst the scientific community and through to long-term curation for many decades hence - is a diverse and complex issue. Samples returned from Mars would be amongst the most scientifically interesting and valuable materials ever recovered and would be the focus of intensive study and investigation for decades to come. Future MSR mission(s) would be international in nature, and a key driver for our discussions is to ensure that any processes we suggest enable internationally collaborative research. A further constraint is the issue of planetary protection, whereby samples must remain in containment until proven non-hazardous to Earth's biosphere and environment. However, a genuine concern is that the samples become "stuck in containment" and unavailable for wider scientific study. A wide range of geobiological analyses would be carried out, and an important part of planning for MSR is deciding which analyses must be carried out within containment and what could or should be done outside of containment. In addition, the nature and type of geobiological investigations carried out in situ by future missions would have an important influence on activities carried out

  14. Simultaneous Determination of Fe(II) and Fe(III) in Pharmaceutical Samples by Post-Column Derivatization/HPLC

    OpenAIRE

    ŞENYUVA, Hamide Z.; SARICA, Deniz Yurtsever; ÖZDEN, Tuncel

    2002-01-01

    A post-column derivatization HPLC method with visible absorbance detection at 521 nm was modified for the simultaneous determination of Fe(II) and Fe(III) in mixtures. The method was applied to pharmaceuticals marketed in Turkey. Iron species were separated on a post-column derivatization HPLC, IonPac CS5A (4x250 mm) analytical column using a pyridine-2,6-dicarboxylic acid based eluent. The determinations of Fe(II) and Fe(III) were also realized by the most common method of FAAS, to...

  15. PARENTING QUALITY IN DRUG-ADDICTED MOTHERS IN A THERAPEUTIC MOTHER-CHILD COMMUNITY: THE CONTRIBUTION OF ATTACHMENT AND PERSONALITY ASSESSMENT

    Directory of Open Access Journals (Sweden)

    Francesca eDe Palo

    2014-09-01

    Full Text Available Growing evidence shows that attachment is a key risk factor for the diagnosis and treatment of clinical diseases in Axis I, such as drug addiction. Recent literature regarding attachment, psychiatric pathology and drug addiction demonstrates that there is a clear prevalence of insecure attachment patterns in clinical and drug addicted subjects. Specifically, some authors emphasize that the anxious-insecure attachment pattern is prevalent among drug-addicted women with double diagnosis (Fonagy et al., 1996. The construct of attachment as a risk factor in clinical samples of drug-addicted mothers needs to be studied more in depth though. The present explorative study focused on the evaluation of parenting quality in a therapeutic mother-child community using attachment and personality assessment tools able to outline drug-addicted mothers’ profiles. This study involved 30 drug addicted mothers, inpatients of a therapeutic community. Attachment representations were assessed via the Adult Attachment Interview; personality diagnosis and symptomatic profiles were performed using the Structured Clinical Interview of the DSM-IV (SCID-II and the Symptom Check List-90-R (SCL-90-R respectively. Both instruments were administered during the first six months of residence in a therapeutic community. Results confirmed the prevalence of insecure attachment representations (90%, with a high presence of U patterns, prevalently scored for dangerous and/or not protective experiences in infanthood. Very high values (>5 were found for some experience scales (i.e. neglect and rejection scales. Data also showed very low values (1-3 in metacognitive monitoring, coherence of transcript and coherence of mind scales. Patients’ different profiles (U vs. E vs. Ds were linked to SCID-II diagnosis, providing insightful indications both for treatment planning and intervention on parenting functions and for deciding if to start foster care or adoption proceedings for

  16. Mediators of the Link Between Adult Attachment and Mindfulness

    OpenAIRE

    Caldwell, Jon G.; Shaver, Phillip R.

    2013-01-01

    The capacity to be mindfully aware of the present moment without judgment is associated with a number of positive psychological and physiological outcomes. Experiences in attachment relationships are related to specific cognitive-emotional patterns that may contribute to dispositional mindfulness. A sample of adults (N = 93) completed questionnaires regarding adult attachment, rumination, thought suppression, attentional control, and mindfulness. Attachment-related avoidance predicted lower l...

  17. Insecure attachment style is associated with chronic widespread pain

    OpenAIRE

    Davies, K. A.; Macfarlane, G. J.; McBeth, J.; Morriss, R.; Dickens, C

    2009-01-01

    Individuals with “insecure” adult attachment styles have been shown to experience more pain than people with secure attachment, though results of previous studies have been inconsistent. We performed a cross-sectional study on a large population-based sample to investigate whether, compared to pain free individuals, subjects with chronic widespread pain were more likely to report insecure adult attachment style. Subjects in a population-based cross-sectional study completed a self-rated asses...

  18. Attachment as an Organizational Construct

    Science.gov (United States)

    Sroufe, L. Alan; Waters, Everett

    1977-01-01

    Discusses the conflict between situational influences and stable individual differences in attachment behavior and attempts to resolve this conflict by examining the functions, outcomes, and context sensitivity of attachment behavior and the underlying behavioral control systems that organize it. (JMB)

  19. The attachment strategy of English ivy: a complex mechanism acting on several hierarchical levels

    OpenAIRE

    Melzer, Björn; Steinbrecher, Tina; Seidel, Robin; Kraft, Oliver; Schwaiger, Ruth; Speck, Thomas

    2010-01-01

    English ivy (Hedera helix L.) is able to grow on vertical substrates such as trees, rocks and house plaster, thereby attaching so firmly to the surface that when removed by force typically whole pieces of the climbing substrate are torn off. The structural details of the attachment process are not yet entirely understood. We studied the attachment process of English ivy in detail and suggest a four-phase process to describe the attachment strategy: (i) initial physical contact, (ii) form clos...

  20. Comparative validity of the Adult Attachment Interview and the Adult Attachment Projective.

    Science.gov (United States)

    Jones-Mason, Karen; Allen, I Elaine; Hamilton, Steve; Weiss, Sandra J

    2015-01-01

    The Adult Attachment Interview (AAI) and the Adult Attachment Projective (AAP) purport to measure the same attachment classifications. The aims of this study were to determine the concurrent validity of the AAI and AAP, and to compare their ability to predict indicators of risk associated with socioeconomic status (SES), depression, and 5-HTTLPR genotype. Results indicated no agreement between AAI and AAP attachment classifications in a sample of late adolescents. As predicted, individuals classified as "unresolved" with regard to loss or trauma were significantly more likely to be of lower SES, have higher levels of depression, and have the 5-HTTLPR "ss" genotype than individuals with secure, preoccupied, or dismissing attachments. These associations, however, were only significant when attachment was classified with the AAI. Results suggest that the AAI and AAP measure different facets of attachment as a result of their unique methodologies and coding criteria. Further research is needed to support their comparability before investigators can assume that the AAP is a valid substitute for the AAI. PMID:26362584

  1. Effect of Attachment-Based Therapy on Behavioral Disorders in Girls with Attachment Problems

    Directory of Open Access Journals (Sweden)

    Marzieh Jahanbakhsh

    2014-09-01

    Full Text Available Background: Multidimensional and complex nature of children`s behavioral disorders requires assessment and usage of modern treatments. The present study investigated the effects of attachment-based therapy on behavioral disorders (depression, over anxiety and oppositional defiant in girl students of primary school who had attachment problems. Materials and Methods: This study is an empirical plan with pretest-posttest and control group. The target samples were 34 individuals of 388 second and fourth grade students of primary school that had highest scores on attachment problems and behavioral disorders (depression, over anxiety and oppositional defiant. Evaluation implemented using Randolph attachment disorder questionnaire (RADQ and Ontario mental health test. Mothers were presented in 10 group sessions of attachment-based intervention and its effects investigated in their girl`s behavioral disorders (depression, over anxiety and oppositional defiant. Results: Reduction rate of behavioral disorders general scores (depression, over anxiety and oppositional defiant of experimental group compared with control group showed significant decreases in posttest and three months follow up. Conclusion: The attachment based therapy offered for mothers of the girls with attachment problems was effective to reduction of behavioral disorders (depression, over anxiety and oppositional defiant symptoms in their children and the mother`s continues attention to interventional methods showed more improvement in follow up evaluation.

  2. Attachment Behaviors in Autistic Children.

    Science.gov (United States)

    Sigman, Marian; Ungerer, Judy A.

    1984-01-01

    Observation of 14 autistic and 14 nonautistic children of equivalent mental age revealed that autistic Ss showed evidence of attachment to their mothers. Among autistic Ss, those showing increased attachment behaviors in response to separation and reunion demonstrated more advanced symbolic play skills than those showing no attachment change.…

  3. Chromosome aberrations induced in human lymphocytes by U-235 fission neutrons: I. Irradiation of human blood samples in the "dry cell" of the TRIGA Mark II nuclear reactor.

    Science.gov (United States)

    Fajgelj, A; Lakoski, A; Horvat, D; Remec, I; Skrk, J; Stegnar, P

    1991-11-01

    A set-up for irradiation of biological samples in the TRIGA Mark II research reactor in Ljubljana is described. Threshold activation detectors were used for characterisation of the neutron flux, and the accompanying gamma dose was measured by TLDs. Human peripheral blood samples were irradiated "in vitro" and biological effects evaluated according to the unstable chromosomal aberrations induced. Biological effects of two types of cultivation of irradiated blood samples, the first immediately after irradiation and the second after 96 h storage, were studied. A significant difference in the incidence of chromosomal aberrations between these two types of samples was obtained, while our dose-response curve fitting coefficients alpha 1 = (7.71 +/- 0.09) x 10(-2) Gy-1 (immediate cultivation) and alpha 2 = (11.03 +/- 0.08) x 10(-2) Gy-1 (96 h delayed cultivation) are in both cases lower than could be found in the literature. PMID:1962281

  4. Adult attachment styles and the psychological response to infant bereavement

    Directory of Open Access Journals (Sweden)

    Mark Shevlin

    2014-05-01

    Full Text Available Background: Based on Bowlby's attachment theory, Bartholomew proposed a four-category attachment typology by which individuals judged themselves and adult relationships. This explanatory model has since been used to help explain the risk of psychiatric comorbidity. Objective: The current study aimed to identify attachment typologies based on Bartholomew's attachment styles in a sample of bereaved parents on dimensions of closeness/dependency and anxiety. In addition, it sought to assess the relationship between the resultant attachment typology with a range of psychological trauma variables. Method: The current study was based on a sample of 445 bereaved parents who had experienced either peri- or post-natal death of an infant. Adult attachment was assessed using the Revised Adult Attachment Scale (RAAS while reaction to trauma was assessed using the Trauma Symptom Checklist (TSC. A latent profile analysis was conducted on scores from the RAAS closeness/dependency and anxiety subscales to ascertain if there were underlying homogeneous attachment classes. Emergent classes were used to determine if these were significantly different in terms of mean scores on TSC scales. Results: A four-class solution was considered the optimal based on fit statistics and interpretability of the results. Classes were labelled “Fearful,” “Preoccupied,” “Dismissing,” and “Secure.” Females were almost eight times more likely than males to be members of the fearful attachment class. This class evidenced the highest scores across all TSC scales while the secure class showed the lowest scores. Conclusions: The results are consistent with Bartholomew's four-category attachment styles with classes representing secure, fearful, preoccupied, and dismissing types. While the loss of an infant is a devastating experience for any parent, securely attached individuals showed the lowest levels of psychopathology compared to fearful, preoccupied, or dismissing

  5. Sampling and analysis plan for phase II of the Bear Creek Valley treatability study Oak Ridge Y-12 Plant, Oak Ridge, Tennessee

    International Nuclear Information System (INIS)

    The Bear Creek Valley (BCV) Treatability Study is intended to provide site-specific data defining potential treatment technologies applicable to contaminated groundwater and surface water. This project directly supports Alternative 5 of the base action in the BCV Feasibility Study, and indirectly supports other alternatives through proof of concept. In that role, the ultimate goal is to install a treatment system that will remove uranium and nitrate from groundwater before it reaches Bear Creek. A secondary goal is the concurrent removal of technetium and several metals that impact ecological risk. This project is intended to produce hydraulic and treatment performance data required to design the treatment system to reach those goals. This project will also generate information that can be applied at other facilities within the Oak Ridge Reservation. This report is the sampling and analysis plan (SAP) for the field work component of Phase II of the BCV Treatability Study. Field work for this phase of the BCV Treatability Study consists of media testing. In-field continuous flow tests will be conducted over an extended time period (5 weeks) to generate data on long-term treatment effects on potential treatment media including sorbents and zero valent iron, over 28 weeks for constructed wetlands treatment, and over 24 weeks for algal mats treatment. The SAP addresses environmental sampling at the S-3 Site at the Oak Ridge Y-12 Plant. Samples will be taken from groundwater, effluent from test columns, effluent from an algal mat reactor, and effluent from a pilot-scale wetlands. This plan will be implemented as part of the BCV Phase II Treatability Study Best Management Practices Plan and in conjunction with the BCV Phase II Treatability Study Health and Safety Plan and the BCV Phase II Treatability Study Waste Management Plan

  6. The Stripe 82 Massive Galaxy Project - II. Stellar mass completeness of spectroscopic galaxy samples from the Baryon Oscillation Spectroscopic Survey

    Science.gov (United States)

    Leauthaud, Alexie; Bundy, Kevin; Saito, Shun; Tinker, Jeremy; Maraston, Claudia; Tojeiro, Rita; Huang, Song; Brownstein, Joel R.; Schneider, Donald P.; Thomas, Daniel

    2016-04-01

    The Baryon Oscillation Spectroscopic Survey (BOSS) has collected spectra for over one million galaxies at 0.15 11.6 only in the narrow redshift range z = [0.51, 0.61]. The low-redshift LOWZ sample is 80 per cent complete at log 10(M*/M⊙) > 11.6 for z = [0.15, 0.43]. To construct mass complete samples at lower masses, spectroscopic samples need to be significantly supplemented by photometric redshifts. This work will enable future studies to better utilize the BOSS samples for galaxy-formation science.

  7. Attachment Theory in Tourism

    Directory of Open Access Journals (Sweden)

    Maximiliano Korstanje

    2007-01-01

    Full Text Available The following work is intended to a revision on attachment theory. The postulates of the theory of the sure base point that the system of exploration meets in narrow relation the system of conducts of attachment and the figure of the keepers. The conducts that characterize and symbolize the relation of the adult with the environment are carried back to the early age, in the moment in which the child develops the affective capacity. What difference does exist between someone who decides to journey to England and that one that one decides to travel to Mar del Plata? How it is possible to study this topic of on a manner trustworthy? These three questions were key to begin the investigation. Nevertheless, the matter began to find certain limitations linked to the methodology that had to be in use. It is possible to use careless they on the leisure scope, a theory which still demonstrates certain inconsistencies in its own clinical application?

  8. Attachment is a dynamic system

    Directory of Open Access Journals (Sweden)

    Zlatka Cugmas

    2003-04-01

    Full Text Available On the basis of the study of recent scientific literature about the development of attachment, the author answers the following questions: which are the postulates the theory of attachment has about the stability of the patterns of attachment, which level of stability in the patterns of attachment from infancy to adulthood these studies illuminate and which factors significantly influence the (instability of the patterns of attachment in time. The theory of attachment assumes that normal circumstances elicit stability. Changes, however, can be the result of important events influencing the sensitivity of the object of attachment. Agreement has not yet been reached regarding the percentage of stability in the patterns of attachment. There is more agreement regarding attachment in adulthood than that in childhood. The results depend on the size and characteristics of the subjects of the research, the measuring instruments, type of data analysis etc. The author concludes that attachment is a dynamic system influenced by significant changes in life (the cognitive development of the child, external care, parents' divorce, different stressful situations. As the influence of stressful events on the individual person' s quality of attachment is examined, it is necessary to consider also his/her temperamental characteristics, role of other people in their lives, etc.

  9. The Link between Types of Attachment and Childhood Trauma

    Science.gov (United States)

    Erozkan, Atilgan

    2016-01-01

    The study investigated the relationship between childhood trauma and types of attachment and the predictive role of childhood trauma on types of attachment. The sample was composed of 911 (492 female; 419 male) university students at Mugla Sitki Kocman University, in Turkey. Data were collected using the brief screening version of the Childhood…

  10. Adaptive Insecure Attachment and Resource Control Strategies during Middle Childhood

    Science.gov (United States)

    Chen, Bin-Bin; Chang, Lei

    2012-01-01

    By integrating the life history theory of attachment with resource control theory, the current study examines the hypothesis that insecure attachment styles reorganized in middle childhood are alternative adaptive strategies used to prepare for upcoming competition with the peer group. A sample of 654 children in the second through seventh grades…

  11. Attachment and Symbolic Play in Preschoolers with Autism Spectrum Disorders

    Science.gov (United States)

    Marcu, Inbal; Oppenheim, David; Koren-Karie, Nina; Dolev, Smadar; Yirmiya, Nurit

    2009-01-01

    The association between attachment and symbolic play was examined in a sample of 45 preschool age boys with autism spectrum disorders. Attachment was assessed using the strange situation procedure, and the frequency, duration, diversity and complexity of child-initiated symbolic play was assessed from observations of mother-child interactions…

  12. Mapping and measuring place attachment

    DEFF Research Database (Denmark)

    Brown, Greg; Raymond, Christopher Mark; Corcoran, Jonathan

    2015-01-01

    home range, (3) identify how participant socio-demographic and home location attributes influence place attachment, (4) provide some guidance for mapping place attachment in future research. We found large spatial variability in individual place attachment and mapped landscape values using both area...... and distance-based measures. The area of place attachment is influenced by occupational roles such as farming or conservation, as well as home location, especially in coastal versus non-coastal contexts. The spatial distribution of mapped landscape values or values home range is related to, but not...... area. Aggregated place attachment across participants in the region showed similar spatial intensity to aggregated values home range, but area-based assessment of place attachment and values home range are distorted by edge effects such as a coastline. To further develop the mapping of place attachment...

  13. SPE coupled to AAS trace determination of Cd(II) and Zn(II) in food samples using amine functionalized GMA-MMA-EGDMA terpolymer: Isotherm and kinetic studies.

    Science.gov (United States)

    Islam, Aminul; Kumar, Suneel; Zaidi, Noushi; Ahmad, Hilal

    2016-12-15

    An ethylenediamine functionalized glycidyl methacrylate (GMA) based terpolymeric chelating resin was synthesized for the separation and preconcentration of Cd(II) and Zn(II) by SPE from bread, rice and fruit juice prior to FAAS determination. The resin was characterized by FT-IR, TGA/DTA, SEM, BET analysis and EDS. Synthesized resin shows a good capacity of 53.96mgg(-1) for Cd(II) and 24.19mgg(-1) for Zn(II) at pH 8.0. Five isotherm equilibrium models were studied to explain the sorption phenomenon out of which Langmuir, Dubinin-Radushkevich, Scatchard and Temkin models were found to be the best fitted. The limit of detection (LOD) and limit of quantification (LOQ) were observed to be 1.5 and 5.1μgL(-1) for Cd and 1.2 and 4.1μgL(-1) for Zn. The reliability of the method was investigated by the analysis of SRM and the recovery of analytes from various spiked food samples. PMID:27451247

  14. Voltammetric determination of sudan ii in food samples at graphene modified glassy carbon electrode based on the enhancement effect of sodium dodecyl sulfate

    International Nuclear Information System (INIS)

    Summary: Herein, a novel electrochemical method was de veloped for the determination of Sudan II based on the electrochemical catalytic activity of graphene modified glassy carbon electrode (GME) and the enhancement effect of sodium dodecyl sulfate (SDS). In a pH 6.0 phosphate buffer solution, Sudan II exhibited a pair of well-defined quasi reversible redox peaks at the GME in the presence of 5.0x10/sup -5/ mol L/sup 1/ SDS. The oxidation peak current of Sudan II was linearly proportional to its concentration in a range from 4.0x10/sup -8/ to 4.0x10/sup -6/ mol L/sup 1/, with a linear regression equation of ipa (A) = 3.35 c + 5.96 x 10/sup -6/, r = 0.9988 and a detection limit of 8.0x10/sup -9/ mol L/sup 1/. The recoveries from the standards fortified blank samples were in the range of 94.7% to 97.5% with RSD lower than 4.0%. The novel method has been successfully used to determine Sudan II in food products with satisfactory results. (author)

  15. Magnetic solid-phase extraction clean-up combined with solidified floating organic drop microextraction for determination of trace mercury (ii) in tea samples

    International Nuclear Information System (INIS)

    Magnetic solid-phase extraction (MSPE) clean-up combined with solidified floating organic drop microextraction (SFODME) has been developed as a new approach for extraction and determination of trace amounts of mercury (II) in tea samples. After purification of the samples by MSPE with the use of Fe/sub 3/O/sub 4/ at the rate SiO/sub 2/ graphene as sorbents, SFODME technique was used to concentrate the target analytes. Various experimental parameters that could affect the extraction efficiencies were investigated. Under optimized experimental conditions a preconcentration factor of 23.0 was obtained using 15.0 mL sample solution. The calibration graph was linear from 0.05 micro g/L to 5.0 micro g/L with a detection limit of 4.0 ng/L. The relative standard deviation for 10 replicate measurements of 0.1 and 1.0 micro g/L of mercury (II) were 4.27% and 3.95%, respectively. The proposed method was applied in the analysis of four tea samples, and the accuracy of the method was assessed through the analysis of certified reference materials and recovery experiments. (author)

  16. Failure properties and strain distribution analysis of meniscal attachments.

    Science.gov (United States)

    Villegas, Diego F; Maes, Jason A; Magee, Sarah D; Donahue, Tammy L Haut

    2007-01-01

    The menisci are frequently injured due to both degeneration and traumatic tearing. It has been suggested that the success of a meniscal replacement is dependent on several factors, one of which is the secure fixation and firm attachment of the replacement to the tibial plateau. Therefore, the objectives of the current study were to (1) determine the failure properties of the meniscal horn attachments, and (2) determine the strain distribution over their surfaces. Eight bovine knee joints were used to study the mechanical response of the meniscal attachments. Three meniscal attachments from one knee of each animal were tested in uniaxial tension at 2%/s to determine the load deformation response. During the tests, the samples were marked and local strain distributions were determined with a video extensometer. The linear modulus of the medial anterior attachment (154+/-134 MPa) was significantly less than both the medial posterior (248+/-179 MPa, p=0.0111) and the lateral anterior attachment (281+/-214 MPa, p=0.0007). Likewise, the ultimate strain for the medial anterior attachments (13.5+/-8.8%) was significantly less than the medial posterior (23+/-13%, p0.05). No significant differences in ultimate strain or moduli across the surface of the attachments were noted. Based on the data obtained, a meniscal replacement would need different moduli for each of the different attachments. However, the attachments appear to be homogeneous. PMID:17359982

  17. Associations between adult attachment dimensions and attitudes toward pain behaviour

    Science.gov (United States)

    McWilliams, Lachlan A; Murphy, Paul DJ; Bailey, S Jeffrey

    2010-01-01

    BACKGROUND: Despite the important role positive reinforcement of pain behaviour is believed to play in chronic pain, there is a paucity of research regarding factors that influence the provision of such reinforcement. Attachment theory suggests that individuals high in attachment avoidance view the pain behaviour of others in a negative manner and would, therefore, provide little reinforcement of pain behaviour. As an initial step in evaluating this model, relationships between attachment dimensions and attitudes toward pain behaviour were examined. Attachment avoidance was hypothesized to be negatively associated with accepting attitudes toward pain behaviour. METHODS: A sample of undergraduate students (n=160) completed the Relationships Structures Questionnaire, which provides global ratings of adult attachment dimensions (anxiety and avoidance) by assessing attachment across four relationship targets (friend, mother, father and romantic partner). Attitudes regarding the acceptability of pain behaviour were assessed using male and female versions of the Appropriate Pain Behaviour Questionnaire (APBQ). RESULTS: Consistent with the hypothesis, attachment avoidance was negatively correlated with both APBQ-Female and APBQ-Male scores. Multiple regression analyses were used to investigate the relationships between the attachment scales and the APBQ scales while statistically adjusting for sex and testing for interaction effects. The findings revealed complex relationships involving interaction effects that provided further support for the hypothesis. CONCLUSIONS: The findings provided support for the hypothesis that attachment avoidance is associated with less accepting attitudes toward pain behaviour. Additional research regarding the role of attachment and attitudes on responses to pain behaviour is warranted. PMID:21165372

  18. SDSS-II Supernova Survey: An Analysis of the Largest Sample of Type Ia Supernovae and Correlations with Host-Galaxy Spectral Properties

    CERN Document Server

    Wolf, Rachel C; Gupta, Ravi R; Sako, Masao; Fischer, John A; Kessler, Rick; Jha, Saurabh W; March, Marisa C; Scolnic, Daniel M; Fischer, Johanna-Laina; Campbell, Heather; Nichol, Robert C; Olmstead, Matthew D; Richmond, Michael; Schneider, Donald P; Smith, Mathew

    2016-01-01

    Using the largest single-survey sample of Type Ia supernovae (SNe Ia) to date, we study the relationship between properties of SNe Ia and those of their host galaxies, focusing primarily on correlations with Hubble residuals (HR). Our sample consists of 345 photometrically-classified or spectroscopically-confirmed SNeIa discovered as part of the SDSS-II Supernova Survey (SDSS-SNS). This analysis utilizes host-galaxy spectroscopy obtained during the SDSS-I/II spectroscopic survey and from an ancillary program on the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) that obtained spectra for nearly all host galaxies of SDSS-II SN candidates. In addition, we use photometric host-galaxy properties from the SDSS-SNS data release (Sako et al. 2014) such as host stellar mass and star-formation rate. We confirm the well-known relation between HR and host-galaxy mass and find a 3.6{\\sigma} significance of a non-zero linear slope. We also recover correlations between HR and host-galaxy gas-phase metallicity and s...

  19. A dispersive liquid--liquid microextraction methodology for copper (II) in environmental samples prior to determination using microsample injection flame atomic absorption spectrometry.

    Science.gov (United States)

    Alothman, Zeid A; Habila, Mohamed; Yilmaz, Erkan; Soylak, Mustafa

    2013-01-01

    A simple, environmentally friendly, and efficient dispersive liquid-liquid microextraction method combined with microsample injection flame atomic absorption spectrometry was developed for the separation and preconcentration of Cu(II). 2-(5-Bromo-2-pyridylazo)-5-(diethylamino)phenol (5-Br-PADAP) was used to form a hydrophobic complex of Cu(II) ions in the aqueous phase before extraction. To extract the Cu(II)-5-Br-PADAP complex from the aqueous phase to the organic phase, 2.0 mL of acetone as a disperser solvent and 200 microL of chloroform as an extraction solvent were used. The influences of important analytical parameters, such as the pH, types and volumes of the extraction and disperser solvents, amount of chelating agent, sample volume, and matrix effects, on the microextraction procedure were evaluated and optimized. Using the optimal conditions, the LOD, LOQ, preconcentration factor, and RSD were determined to be 1.4 microg/L, 4.7 microg/L, 120, and 6.5%, respectively. The accuracy of the proposed method was investigated using standard addition/recovery tests. The analysis of certified reference materials produced satisfactory analytical results. The developed method was applied for the determination of Cu in real samples. PMID:24645524

  20. SDSS-II Supernova Survey: An Analysis of the Largest Sample of Type Ia Supernovae and Correlations with Host-galaxy Spectral Properties

    Science.gov (United States)

    Wolf, Rachel C.; D’Andrea, Chris B.; Gupta, Ravi R.; Sako, Masao; Fischer, John A.; Kessler, Rick; Jha, Saurabh W.; March, Marisa C.; Scolnic, Daniel M.; Fischer, Johanna-Laina; Campbell, Heather; Nichol, Robert C.; Olmstead, Matthew D.; Richmond, Michael; Schneider, Donald P.; Smith, Mathew

    2016-04-01

    Using the largest single-survey sample of Type Ia supernovae (SNe Ia) to date, we study the relationship between properties of SNe Ia and those of their host galaxies, focusing primarily on correlations with Hubble residuals (HRs). Our sample consists of 345 photometrically classified or spectroscopically confirmed SNe Ia discovered as part of the SDSS-II Supernova Survey (SDSS-SNS). This analysis utilizes host-galaxy spectroscopy obtained during the SDSS-I/II spectroscopic survey and from an ancillary program on the SDSS-III Baryon Oscillation Spectroscopic Survey that obtained spectra for nearly all host galaxies of SDSS-II SN candidates. In addition, we use photometric host-galaxy properties from the SDSS-SNS data release such as host stellar mass and star formation rate. We confirm the well-known relation between HR and host-galaxy mass and find a 3.6σ significance of a nonzero linear slope. We also recover correlations between HR and host-galaxy gas-phase metallicity and specific star formation rate as they are reported in the literature. With our large data set, we examine correlations between HR and multiple host-galaxy properties simultaneously and find no evidence of a significant correlation. We also independently analyze our spectroscopically confirmed and photometrically classified SNe Ia and comment on the significance of similar combined data sets for future surveys.

  1. Adult Attachment as Mediator between Recollections of Childhood and Satisfaction with Life

    NARCIS (Netherlands)

    Hinnen, C.; Sanderman, R.; Sprangers, M.A.

    2009-01-01

    In accordance with attachment theory, the present study investigates whether internal working models of attachment mediated the association between childhood memories and satisfaction about life in adulthood. A convenient sample of 437 participants completed questionnaires assessing a broad range of

  2. Application of a DNA-based luminescence switch-on method for the detection of mercury(II) ions in water samples from Hong Kong

    International Nuclear Information System (INIS)

    Mercury is a highly toxic environmental contaminant that damages the endocrine and central nervous systems. In view of the contamination of Hong Kong territorial waters with anthropogenic pollutants such as trace heavy metals, we have investigated the application of our recently developed DNA-based luminescence methodology for the rapid and sensitive detection of mercury(II) ions in real water samples. The assay was applied to water samples from Shing Mun River, Nam Sang Wai and Lamma Island sea water, representing natural river, wetland and sea water media, respectively. The results showed that the system could function effectively in real water samples under conditions of low turbidity and low metal ion concentrations. However, high turbidity and high metal ion concentrations increased the background signal and reduced the performance of this assay. (letter)

  3. Application of a DNA-based luminescence switch-on method for the detection of mercury(II) ions in water samples from Hong Kong

    Science.gov (United States)

    He, Hong-Zhang; Leung, Ka-Ho; Fu, Wai-Chung; Shiu-Hin Chan, Daniel; Leung, Chung-Hang; Ma, Dik-Lung

    2012-12-01

    Mercury is a highly toxic environmental contaminant that damages the endocrine and central nervous systems. In view of the contamination of Hong Kong territorial waters with anthropogenic pollutants such as trace heavy metals, we have investigated the application of our recently developed DNA-based luminescence methodology for the rapid and sensitive detection of mercury(II) ions in real water samples. The assay was applied to water samples from Shing Mun River, Nam Sang Wai and Lamma Island sea water, representing natural river, wetland and sea water media, respectively. The results showed that the system could function effectively in real water samples under conditions of low turbidity and low metal ion concentrations. However, high turbidity and high metal ion concentrations increased the background signal and reduced the performance of this assay.

  4. Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. IV. Abundances for a Large Sample of Field Stars and Comparison with the Cluster Sample

    Science.gov (United States)

    Parisi, M. C.; Geisler, D.; Carraro, G.; Clariá, J. J.; Villanova, S.; Gramajo, L. V.; Sarajedini, A.; Grocholski, A. J.

    2016-09-01

    This paper represents a major step forward in the systematic and homogeneous study of Small Magellanic Cloud (SMC) star clusters and field stars carried out by applying the calcium triplet technique. We present in this work the radial velocity and metallicity of approximately 400 red giant stars in 15 SMC fields, with typical errors of about 7 km s‑1 and 0.16 dex, respectively. We added to this information our previously determined metallicity values for 29 clusters and approximately 350 field stars using the identical techniques. Using this enlarged sample, we analyze the metallicity distribution and gradient in this galaxy. We also compare the chemical properties of the clusters and of their surrounding fields. We find a number of surprising results. While the clusters, taken as a whole, show no strong evidence for a metallicity gradient (MG), the field stars exhibit a clear negative gradient in the inner region of the SMC, consistent with the recent results of Dobbie et al. For distances to the center of the galaxy less than 4°, field stars show a considerably smaller metallicity dispersion than that of the clusters. However, in the external SMC regions, clusters and field stars exhibit similar metallicity dispersions. Moreover, in the inner region of the SMC, clusters appear to be concentrated in two groups: one more metal-poor and another more metal-rich than field stars. Individually considered, neither cluster group presents an MG. Most surprisingly, the MG for both stellar populations (clusters and field stars) appears to reverse sign in the outer regions of the SMC. The difference between the cluster metallicity and the mean metallicity of the surrounding field stars turns out to be a strong function of the cluster metallicity. These results could be indicating different chemical evolution histories for these two SMC stellar populations. They could also indicate variations in the chemical behavior of the SMC in its internal and external regions.

  5. THERMOPHILE ENDOSPORES HAVE RESPONSIVE EXOSPORIUM FOR ATTACHMENT

    Energy Technology Data Exchange (ETDEWEB)

    PANESSA-WARREN,B.; TORTORA,G.T.; WARREN,J.; SABATINI,R.

    1999-08-01

    Recently studies examining the colonization of Clostridial pathogens on agar and human tissue culture cells, demonstrated that (C. sporogenes ATCC 3584, C. difficile ATCC 43594 [patient isolate], C. difficile ATCC 9689 [non-clinical], C. clostridioforme [patient isolate]) bacterial spores (endospores) of the genus Clostridia have an outer membrane that becomes responsive at activation and exhibits extensions of the exosporial membrane that facilitate and maintain spore attachment to a nutritive substrate during germination and initial outgrowth of the newly developed bacterial cell. Therefore this attachment phenomenon plays an important role in insuring bacterial colonization of a surface and the initial stages of the infective process. To see if other non-clinical members of this genus also have this ability to attach to a substrate or food-source during spore germination, and how this attachment process in environmental thermophiles compares to the clinical paradigm (in relation to time sequence, exosporial membrane structure, type of attachment structures, composition of the membrane etc...), sediment samples were collected in sterile transport containers at 4 geothermal sites at Yellowstone National Park in Wyoming. Because spore forming bacteria will produce spores when conditions are unfavorable for growth, the samples were sealed and stored at 4 C. After 8 months the samples were screened for the presence of spores by light microscope examination using malachite green/safranin, and traditional endospores were identified in significant quantities from the Terrace Spring site (a 46 C lake with bacterial mats and a rapidly moving run-off channel leading to a traditional hot spring). The highest spore population was found in the top sediment and benthic water of the run-off channel, pH 8.1.

  6. Denser Sampling of the Rosette Nebula with Faraday Rotation Measurements: Improved Estimates of Magnetic Fields in H II Regions

    Science.gov (United States)

    Costa, Allison H.; Spangler, Steven R.; Sink, Joseph R.; Brown, Shea; Mao, Sui Ann

    2016-04-01

    We report Faraday rotation measurements of 11 extragalactic radio sources with lines of sight through the Rosette Nebula, a prominent H ii region associated with the star cluster NGC 2244. The goal of these measurements is to better determine the strength and structure of the magnetic field in the nebula. We calculate the rotation measure (RM) through two methods, a least-squares fit to χ ({λ }2) and Rotation Measure Synthesis. In conjunction with our results from Savage et al., we find an excess RM due to the shell of the nebula of +40 to +1200 rad m‑2 above a background RM of +147 rad m‑2. We discuss two forms of a simple shell model intended to reproduce the magnitude of the observed RM as a function of distance from the center of the Rosette Nebula. The models represent different physical situations for the magnetic field within the shell of the nebula. The first assumes that there is an increase in the magnetic field strength and plasma density at the outer radius of the H ii region, such as would be produced by a strong magnetohydrodynamic shock wave. The second model assumes that any increase in the RM is due solely to an increase in the density, and the Galactic magnetic field is unaffected in the shell. We employ a Bayesian analysis to compare the two forms of the model. The results of this analysis were inconclusive, although the model without amplification of the interstellar magnetic field is weakly favored.

  7. Parenting and preschooler attachment among low-income urban African American families.

    Science.gov (United States)

    Barnett, D; Kidwell, S L; Leung, K H

    1998-12-01

    This study examined the parental correlates of child attachment in a preschool-aged, economically disadvantaged, urban, African American sample. Sixty-nine 4- to 5-year-olds and their primary caregivers participated in the Strange Situation assessment procedure. Based on Cassidy and Marvin's classification system for preschoolers, 61% of the children were classified as securely attached, with girls being significantly more likely to be securely attached than boys (74% versus 45%). The majority of the insecure attachments were of the avoidant variety. Consistent with attachment theory, parents of securely attached children were rated as significantly more warm and accepting and less controlling with their children than were parents of insecurely attached preschoolers. Relative to parents of securely attached preschoolers, parents of children judged to be insecurely attached reported being more likely to use corporal punishment and less likely to use verbal reminders when their children misbehaved. Parenting was associated with attachment over and above the effects of child sex. PMID:9914645

  8. Sentence-Level Attachment Prediction

    Science.gov (United States)

    Albakour, M.-Dyaa; Kruschwitz, Udo; Lucas, Simon

    Attachment prediction is the task of automatically identifying email messages that should contain an attachment. This can be useful to tackle the problem of sending out emails but forgetting to include the relevant attachment (something that happens all too often). A common Information Retrieval (IR) approach in analyzing documents such as emails is to treat the entire document as a bag of words. Here we propose a finer-grained analysis to address the problem. We aim at identifying individual sentences within an email that refer to an attachment. If we detect any such sentence, we predict that the email should have an attachment. Using part of the Enron corpus for evaluation we find that our finer-grained approach outperforms previously reported document-level attachment prediction in similar evaluation settings.

  9. Attachment theory: Old and new approach

    OpenAIRE

    Polovina Nada

    2005-01-01

    The article is an attempt to present holistically the key concepts of attachment theory rediscovered for its potentials. The presented concepts include: narrow definition of attachment, behavioral control system of attachment, attachment working model and patterns of attachment. The concepts are presented in the context of child attachment theory and adult attachment theory, in addition to description of the development of attachment. Concepts, as well as developmental processes are presented...

  10. Attachment theory and therapeutic relationships

    OpenAIRE

    Boysan, Zehra

    2015-01-01

    The aims of this study were to examine the associations between current self-reported attachment styles, retrospective reports of childhood experiences, and the development of the therapeutic alliance. It was hypothesised that anxious and avoidant attachment would be correlated with negative childhood experiences and that both attachment anxiety and avoidance would be inversely correlated with the therapeutic alliance. The third hypothesis stated that negative childhood recollections would co...

  11. Attachment to Parents and Depressive Symptoms in College Students: The Mediating Role of Initial Emotional Adjustment and Psychological Needs

    Directory of Open Access Journals (Sweden)

    Sanja Smojver-Ažić

    2015-04-01

    Full Text Available The aim of the present study was to explore the role of parental attachment in students' depressive symptoms. We have examined wheather initial emotional adjustment and psychological needs would serve as a mediator of the relationship between attachment dimensions (anxiety and avoidance and depressive symptoms.A sample consisted of 219 students (143 females randomly selected from the University of Rijeka, Croatia, with mean age 19.02 years. Participants provided self-report on the Experiences in Close Relationship Inventory and The Student Adaptation to College Questionnaire at the beginning of the first year of college, and The Basic Psychological Needs Satisfaction Scale and Beck Depression Inventory-II at the third year of college.Results of hierarchical regression analyses confirm that emotional adjustment had a full mediation effect on anxiety dimension and partial mediation on avoidance dimension. Only a partial mediation effect of psychological needs for autonomy and relatedness between attachment and depressive symptoms was found.The findings of this study give support to the researches indicating the importance of parental attachment for college students not only through its direct effects on depressive symptoms, but also through effects on the initial emotional adjustment and satisfaction of psychological needs. The results of the mediation analysis suggest that both attachment dimensions and emotional adjustment as well as psychological need satisfaction have a substantial shared variance when predicting depressive symptoms and that each variable also gives a unique contribution to depressive symptoms.

  12. Measurement of the cross section for prompt isolated diphoton production using the full CDF Run II data sample

    CERN Document Server

    Aaltonen, T; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Auerbach, B; Aurisano, A; Azfar, F; Badgett, W; Bae, T; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Barria, P; Bartos, P; Bauce, M; Bedeschi, F; Behari, S; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Bland, K R; Blumenfeld, B; Bocci, A; Bodek, A; Bortoletto, D; Boudreau, J; Boveia, A; Brigliadori, L; Bromberg, C; Brucken, E; Budagov, J; Budd, H S; Burkett, K; Busetto, G; Bussey, P; Butti, P; Buzatu, A; Calamba, A; Camarda, S; Campanelli, M; Canelli, F; Carls, B; Carlsmith, D; Carosi, R; Carrillo, S; Casal, B; Casarsa, M; Castro, A; Catastini, P; Cauz, D; Cavaliere, V; Cavalli-Sforza, M; Cerri, A; Cerrito, L; Chen, Y C; Chertok, M; Chiarelli, G; Chlachidze, G; Chokheli, D; Cho, K; Ciocci, M A; Clark, A; Clarke, C; Convery, M E; Conway, J; Corbo, M; Cordelli, M; Cox, C A; Cox, D J; Cremonesi, M; Cruz, D; Cuevas, J; Culbertson, R; d'Ascenzo, N; Datta, M; de Barbaro, P; Demortier, L; Deninno, M; d'Errico, M; Devoto, F; Di Canto, A; Di Ruzza, B; Dittmann, J R; Donati, S; D'Onofrio, M; Dorigo, M; Driutti, A; Ebina, K; Edgar, R; Elagin, A; Erbacher, R; Errede, S; Esham, B; Eusebi, R; Farrington, S; Fernandez Ramos, J P; Field, R; Flanagan, G; Forrest, R; Franklin, M; Freeman, J C; Frisch, H; Funakoshi, Y; Garfinkel, A F; Garosi, P; Gerberich, H; Gerchtein, E; Giagu, S; Giakoumopoulou, V; Gibson, K; Ginsburg, C M; Giokaris, N; Giromini, P; Giurgiu, G; Glagolev, V; Glenzinski, D; Goldin, D; Gold, M; Golossanov, A; Gomez-Ceballos, G; Gomez, G; Goncharov, M; Gonzalez Lopez, O; Gorelov, I; Goshaw, A T; Goulianos, K; Gramellini, E; Grinstein, S; Grosso-Pilcher, C; Group, R C; Guimaraes da Costa, J; Hahn, S R; Han, J Y; Happacher, F; Hara, K; Hare, M; Harrington-Taber, T; Harr, R F; Hatakeyama, K; Hays, C; Heinrich, J; Herndon, M; Hocker, A; Hong, Z; Hopkins, W; Hou, S; Hughes, R E; Husemann, U; Huston, J; Introzzi, G; Iori, M; Ivanov, A; James, E; Jang, D; Jayatilaka, B; Jeon, E J; Jindariani, S; Jones, M; Joo, K K; Junk, T R; Jun, S Y; Kambeitz, M; Kamon, T; Karchin, P E; Kasmi, A; Kato, Y; Ketchum, W; Keung, J; Kilminster, B; Kim, D H; Kim, H S; Kim, J E; Kim, M J; Kim, S B; Kim, S H; Kimura, N; Kim, Y J; Kim, Y K; Kirby, M; Knoepfel, K; Kondo, K; Kong, D J; Konigsberg, J; Kotwal, A V; Kreps, M; Kroll, J; Kruse, M; Kuhr, T; Kurata, M; Laasanen, A T; Lammel, S; Lancaster, M; Lannon, K; Latino, G; Lee, H S; Lee, J S; Leone, S; Leo, S; Lewis, J D; Limosani, A; Lipeles, E; Liu, H; Liu, Q; Liu, T; Lockwitz, S; Loginov, A; Lucchesi, D; Lueck, J; Lujan, P; Lukens, P; Lungu, G; Lysak, R; Lys, J; Madrak, R; Maestro, P; Malik, S; Manca, G; Manousakis-Katsikakis, A; Margaroli, F; Marino, P; Martinez, M; Matera, K; Mattson, M E; Mazzacane, A; Mazzanti, P; McNulty, R; Mehta, A; Mehtala, P; Mesropian, C; Miao, T; Mietlicki, D; Mitra, A; Miyake, H; Moed, S; Moggi, N; Moon, C S; Moore, R; Morello, M J; Mukherjee, A; Muller, Th; Murat, P; Mussini, M; Nachtman, J; Nagai, Y; Naganoma, J; Nakano, I; Napier, A; Nett, J; Neu, C; Nigmanov, T; Nodulman, L; Noh, S Y; Norniella, O; Oakes, L; Oh, S H; Oh, Y D; Oksuzian, I; Okusawa, T; Orava, R; Ortolan, L; Pagliarone, C; Palencia, E; Palni, P; Papadimitriou, V; Parker, W; Pauletta, G; Paulini, M; Paus, C; Phillips, T J; Piacentino, G; Pianori, E; Pilot, J; Pitts, K; Plager, C; Pondrom, L; Poprocki, S; Potamianos, K; Pranko, A; Prokoshin, F; Ptohos, F; Punzi, G; Ranjan, N; Redondo Fernandez, I; Renton, P; Rescigno, M; Riddick, T; Rimondi, F; Ristori, L; Robson, A; Rodriguez, T; Rolli, S; Ronzani, M; Roser, R; Rosner, J L; Ruffini, F; Ruiz, A; Russ, J; Rusu, V; Safonov, A; Sakumoto, W K; Sakurai, Y; Santi, L; Sato, K; Saveliev, V; Savoy-Navarro, A; Schlabach, P; Schmidt, E E; Schwarz, T; Scodellaro, L; Scuri, F; Seidel, S; Seiya, Y; Semenov, A; Sforza, F; Shalhout, S Z; Shears, T; Shepard, P F; Shimojima, M; Shochet, M; Shreyber-Tecker, I; Simonenko, A; Sinervo, P; Sliwa, K; Smith, J R; Snider, F D; Song, H; Sorin, V; Stancari, M; St. Denis, R; Stelzer, B; Stelzer-Chilton, O; Stentz, D; Strologas, J; Sudo, Y; Sukhanov, A; Suslov, I; Takemasa, K; Takeuchi, Y; Tang, J; Tecchio, M; Teng, P K; Thom, J; Thomson, E; Thukral, V; Toback, D; Tokar, S; Tollefson, K; Tomura, T; Tonelli, D; Torre, S; Torretta, D; Totaro, P; Trovato, M; Ukegawa, F; Uozumi, S; Vazquez, F; Velev, G; Vellidis, C; Vernieri, C; Vidal, M; Vilar, R; Vizan, J; Vogel, M; Volpi, G; Wagner, P; Wallny, R; Wang, S M; Warburton, A; Waters, D; Wester, W C, III; Whiteson, D; Wicklund, A B; Wilbur, S; Williams, H H; Wilson, J S; Wilson, P; Winer, B L; Wittich, P; Wolbers, S; Wolfe, H; Wright, T; Wu, X; Wu, Z; Yamamoto, K; Yamato, D; Yang, T; Yang, U K; Yang, Y C; Yao, W M; Yeh, G P; Yi, K; Yoh, J; Yorita, K; Yoshida, T; Yu, G B; Yu, I; Zanetti, A M; Zeng, Y; Zhou, C; Zucchelli, S

    2013-01-01

    This Letter reports a measurement of the cross section for producing pairs of central prompt isolated photons in proton-antiproton collisions at a total energy of 1.96 TeV using data corresponding to 9.5/fb integrated luminosity collected with the CDF II detector at the Fermilab Tevatron. The measured differential cross section is compared to three calculations derived from the theory of strong interactions. These include a prediction based on a leading order matrix element calculation merged with parton shower, a next-to-leading order, and a next-to-next-to-leading order calculation. The first and last calculations reproduce most aspects of the data, thus showing the importance of higher-order contributions for understanding the theory of strong interaction and improving measurements of the Higgs boson and searches for new phenomena in diphoton final states.

  13. Quantitative Determination of ABT-925 in Human Plasma by On-Line SPE and LC-MS/MS: Validation and Sample Analysis in Phase II Studies

    OpenAIRE

    Katty Wan; Matthew Rieser; Tawakol El-Shourbagy

    2010-01-01

    A fully automated 96-well On-Line Solid Phase Extraction (SPE) followed by High Performance Liquid Chromatography (HPLC)-Tandem Mass Spectrometric (MS/MS) method for the determination of ABT-925 (2-{3-[4-(2-tert-Butyl-6-trifluoromethyl-pyrimidin-4-yl)-piperazin-1-yl)-propyl-sulfanyl}-3H-pyrimidin-4-one fumarate) in human plasma was developed, validated and utilized in Phase II clinical studies. 50 µL of plasma sample was fortified with internal standard (IS, d8-ABT-925) and extracted on-line ...

  14. Correlations between holo-transcobalamin II, holo-haptocorrin, and total B12 in serum samples from healthy subjects and patients.

    OpenAIRE

    Wickramasinghe, S. N.; Fida, S

    1993-01-01

    AIMS--To study the correlations between total vitamin B12(B12), holo-haptocorrin, and holo-transcobalamin II (holo-TCII) concentrations in human sera; the association between reduced holo-TCII concentrations and macrocytosis attributable to B12 deficiency. METHODS--Serum samples from 38 healthy volunteers, 113 patients with normal total serum B12 concentrations and 93 patients with low total serum B12 were studied. Holo-TCII was removed from whole serum by adsorption with amorphous precipitat...

  15. MgII absorption systems with W_0 > 0.1 \\AA for a radio selected sample of 77 QSOs and their associated magnetic fields at high redshifts

    OpenAIRE

    Bernet, M. L.; Miniati, F.; Lilly, S. J.

    2010-01-01

    We present a catalogue of MgII absorption systems obtained from high resolution UVES/VLT data of 77 QSOs in the redshift range 0.6 0.1 \\AA. The statistical properties of our sample are found to be in agreement with those from previous work in the literature. However, we point out that the previously observed increase with redshift of dN/dz for weak absorbers, pertains exclusively to very weak absorbers with W_0 < 0.1 \\AA. Instead, dN/dz for abs...

  16. Attachment disorganization in different clinical groups: What underpins unresolved attachment?

    Directory of Open Access Journals (Sweden)

    Juen Florian

    2013-01-01

    Full Text Available This paper summarizes findings and clinical implications of research on attachment disorganization in diverse clinical groups. Disorganized/unresolved attachment is overrepresented in these groups compared to healthy control participants, but disorder specific characteristics of this attachment pattern are still poorly understood. The focus of this study was to explore defensive processes in participants whose narratives were classified as disorganized/unresolved using the Adult Attachment Projective Picture System (AAP. Besides the predominance of disorganized attachment, clinical participants demonstrated more “segregated system material” especially in stories representing aloneness and more “Personal Experience material” compared to healthy individuals. Within the disorganized/ unresolved clinical individuals, BPD and PTSD patients showed the highest proportion of attachment disorganization and were less able to use other attachment-related defenses to maintain organized. Furthermore, PTSD patients were emotionally overwhelmed by the projective attachment scenes compared to the other clinical groups as indexed by an incapacity to complete sections of the AAP. BPD and addicted patients were characterized by a high degree of self-other boundary confusion. Depressive and schizophrenic patients showed a high overall defensive intensity to remain organized.

  17. A large sample of low surface brightness disc galaxies from the SDSS- II. Metallicities in surface brightness bins

    CERN Document Server

    Liang, Y C; Hammer, F; Chen, X Y; Liu, F S; Gao, D; Hu, J Y; Deng, L C; Zhang, B

    2010-01-01

    We study the spectroscopic properties of a large sample of Low Surface Brightness galaxies (LSBGs) (with B-band central surface brightness mu0(B)>22 mag arcsec^(-2)) selected from the Sloan Digital Sky Survey Data Release 4 (SDSS-DR4) main galaxy sample. A large sample of disk-dominated High Surface Brightness galaxies (HSBGs, with mu0(B)<22 mag arcsec^(-2)) are also selected for comparison simultaneously. To study them in more details, these sample galaxies are further divided into four subgroups according to mu0(B) (in units of mag arcsec^(-2)): vLSBGs (24.5-22.75),iLSBGs (22.75-22.0), iHSBGs (22.0-21.25), and vHSBGs (<21.25). The diagnostic diagram from spectral emission-line ratios shows that the AGN fractions of all the four subgroups are small (<9%). The 21,032 star-forming galaxies with good quality spectroscopic observations are further selected for studying their dust extinction, strong-line ratios, metallicities and stellar mass-metallicities relations. The vLSBGs have lower extinction valu...

  18. Adult attachment security and college student substance use.

    Science.gov (United States)

    Kassel, Jon D; Wardle, Margaret; Roberts, John E

    2007-06-01

    Previous research has demonstrated strong links between quality of adult attachment styles and various forms of psychological distress. A burgeoning literature further points to a relationship between insecure attachment and drug use, particularly alcohol consumption. In the present study, we expanded upon the existing literature by examining the relationship between adult attachment style and use of cigarettes, alcohol, and marijuana in a sample of 212 college students. Moreover, based on our previous work [Hankin, B.L., Kassel, J.D., and Abela, J.R.Z. (2005). Adult attachment dimensions and specificity of emotional distress symptoms: prospective investigations of cognitive risk and interpersonal stress generation as mediating mechanisms. Personality and Social Psychology Bulletin, 31, 136-151.], we proposed a conceptual model positing that adult attachment style influences both frequency of drug use and stress-motivated drug use through its impact on dysfunctional attitudes and self-esteem. Initial correlational analyses indicated significant (positive) associations between anxious attachment (tapping neediness and fear of abandonment) and both drug use frequency and stress-motivated drug use. Simultaneous regression analyses revealed that, for drug use frequency, the influence of anxious attachment operated primarily through its effect on dysfunctional attitudes and self-esteem. Regarding drug use attributable to negative affect reduction, anxious attachment demonstrated direct, independent effects on both cigarette smoking and alcohol use. These findings highlight the potential importance of adult attachment styles as a risk factor for drug use among college students. PMID:16996225

  19. Predicting Preschoolers' Attachment Security from Parenting Behaviours, Parents' Attachment Relationships and Their Use of Social Support

    Science.gov (United States)

    Coyl, Diana D.; Newland, Lisa A.; Freeman, Harry

    2010-01-01

    Associations between preschoolers' attachment security, parenting behaviours (i.e. parent-child involvement, parenting consistency and co-parenting consistency) and parenting context (i.e. parents' internal working models (IWMs) and use of social support) were examined in a sample of 235 culturally diverse families. The authors predicted that…

  20. Fiber Attachment Module Experiment

    Science.gov (United States)

    Agostini, Reinaldo J.

    2014-01-01

    Hollow Fiber Membrane Bioreactors (HFMB) are ideal systems for biological pretreatment of wastewater, however, optimization is still underway. The Fiber Attachment Module Experiment (FAME) allows the simultaneous testing of potential materials, treatments on these and varying inoculums. Polydimethylsiloxane (PDMS), the material chosen for its ideal oxygen permeation properties, was treated with 1 sodium hydroxide 0.1 M ether for 18 seconds and ultraviolet (UV) irradiation oxygen plasma (OP) exposure for 1 hour. Preliminary chemistry and visual data indicate promising treatments when using OP and sodium hydroxide as treatments for PDMS fibers; however, due to the biological nature of the experiment, time is a constraint. Sodium hydroxide treatment chemistry data shows nitrification is occurring as urea and ammonia are decreasing and nitrite is increasing. A higher amount of biofilm can also be observed for this particular case. During the final two weeks of the internship x-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and acridine orange (AO) cell counts will be employed for treatment effectiveness on the first batch of treatments (ether and sodium hydroxide). These same strategies will be used for the second batch of experiments due in four weeks (2nd week of August).

  1. Protein Attachment on Nanodiamonds.

    Science.gov (United States)

    Lin, Chung-Lun; Lin, Cheng-Huang; Chang, Huan-Cheng; Su, Meng-Chih

    2015-07-16

    A recent advance in nanotechnology is the scale-up production of small and nonaggregated diamond nanoparticles suitable for biological applications. Using detonation nanodiamonds (NDs) with an average diameter of ∼4 nm as the adsorbents, we have studied the static attachment of three proteins (myoglobin, bovine serum albumin, and insulin) onto the nanoparticles by optical spectroscopy, mass spectrometry, and dynamic light scattering, and electrophoretic zeta potential measurements. Results show that the protein surface coverage is predominantly determined by the competition between protein-protein and protein-ND interactions, giving each protein a unique and characteristic structural configuration in its own complex. Specifically, both myoglobin and bovine serum albumin show a Langmuir-type adsorption behavior, forming 1:1 complexes at saturation, whereas insulin folds into a tightly bound multimer before adsorption. The markedly different adsorption patterns appear to be independent of the protein concentration and are closely related to the affinity of the individual proteins for the NDs. The present study provides a fundamental understanding for the use of NDs as a platform for nanomedical drug delivery. PMID:25815400

  2. Reactivity and neutron emission measurements of burnt PWR fuel rod samples in LWR-PROTEUS phase II

    International Nuclear Information System (INIS)

    Measurements have been made of the reactivity effects and the neutron emission rates of uranium oxide and mixed oxide burnt fuel samples having a wide range of burnup values and coming from a Pressurised Water Reactor (PWR). The reactivity measurements have been made in a PWR lattice moderated in turn with: water, a water and heavy water mixture, and water containing boron. An interesting relationship has been found between the neutron emission rate and the measured reactivity. (authors)

  3. A new sample of X-ray selected narrow emission-line galaxies. II. Looking for True Seyfert 2

    CERN Document Server

    Pons, Estelle

    2016-01-01

    A sample of X-ray and optically selected narrow emission-line galaxies (769 sources) from the 3XMM catalogue cross-correlated with SDSS (DR9) catalogue has been studied. Narrow-emission line active galactic nuclei (AGN; type-2) have been selected on the basis of their emission line ratios and/or X-ray luminosity. We have looked for X-ray unobscured type-2 AGN. As X-ray spectra were not available for our whole sample, we have checked the reliability of using the X-ray hardness ratio (HR) as a probe of the level of obscuration and we found a very good agreement with full spectral fitting results, with only 2% of the sources with apparently unobscured HR turning out to have an obscured spectrum. Despite the fact that type-2 AGN are supposed to be absorbed based on the Unified Model, about 60% of them show no sign or very low level of X-ray obscuration. After subtraction of contaminants to the sample, that is Narrow-Line Seyfert 1 and Compton-thick AGN, the fraction of unobscured Sy2 drops to 47%. For these sourc...

  4. Deep multiband surface photometry on star forming galaxies: II. A volume limited sample of 21 emission lines galaxies

    CERN Document Server

    Micheva, Genoveva; Zackrisson, Erik; Bergvall, Nils; Marquart, Thomas; Masegosa, Josefa; Marquez, Isabel; Cumming, Robert; Durret, Florence

    2012-01-01

    We present deep surface photometry of a volume--limited sample of 21 UM emission line galaxies in broadband optical UBVRI and near infra-red (NIR) HKs filters. The sample comprises 19 blue compact galaxies (BCGs) and two spirals. For some targets the exposure times are the deepest to date. For the BCG UM462 we observe a previously undetected second disk component beyond a surface brightness level of mu_B=26 mag arcsec^{-2}. This is a true low surface brightness component with central surface brightness mu_0=24.1 mag arcsec^{-2} and scale length h_r=1.5 kpc. All BCGs are dwarfs, with M_B>=-18, and very compact, with an average scale length of h_r~1 kpc. We separate the burst and host populations for each galaxy and compare them to stellar evolutionary models with and without nebular emission contribution. We also measure the A_{180} asymmetry in all filters and detect a shift from optical to NIR in the average asymmetry of the sample. This shift seems to be correlated with the morphological class of the BCGs. ...

  5. What is preferential to preferential attachment?

    CERN Document Server

    Small, Michael; Stemler, Thomas

    2013-01-01

    Preferential attachment --- where new nodes are added and attached to existing nodes with probability proportional to the existing nodes' degree --- has become the standard growth model for scale-free networks, where the asymptotic probability of a node having degree $k$ is proportional to $k^{-\\gamma}$. However, the motivation for this model is entirely {\\em ad hoc}. We use exact likelihood arguments and show that the optimal way to build a scale-free network is to preferentially attach to low degree nodes. Asymptotically, the optimal strategy is to attach the new node to one of the nodes of degree $k$ (in a network with $N$ nodes) with probability proportional to $\\frac{1}{N+\\zeta(\\gamma)(k+1)^\\gamma}$. The algorithm we propose to do this can be employed to generate optimally scale-free networks (maximum likelihood realisations) as well as a random sampling of the space of all scale-free networks with a given degree exponent $\\gamma$. While we focus on scale free networks, these methods can be applied to a ...

  6. Diameters in preferential attachment models

    NARCIS (Netherlands)

    Dommers, S.; Van der Hofstad, R.; Hooghiemstra, G.

    2010-01-01

    In this paper, we investigate the diameter in preferential attachment (PA-) models, thus quantifying the statement that these models are small worlds. The models studied here are such that edges are attached to older vertices proportional to the degree plus a constant, i.e., we consider affine PA-mo

  7. Association between attachment and schizotypy

    OpenAIRE

    Dunne, Colm

    2011-01-01

    Background: The human genome project has affirmed the importance of non-genetic factors in human development. Attachment style is considered to be a diathesis for psychopathology and an important determinant regarding interpersonal functioning. Epidemiological research has indicated that there is significant aetiological continuity between symptoms of schizotypy and clinical symptoms of schizophrenia. Limited research has investigated the association between attachment and schi...

  8. Characterization of L-cysteine capped CdTe quantum dots and application to test Cu(II) deficiency in biological samples from critically ill patients

    Energy Technology Data Exchange (ETDEWEB)

    Sáez, Laura; Molina, Jorge; Florea, Daniela I.; Planells, Elena M. [Institute of Nutrition and Food Technology and Department of Physiology, Faculty of Pharmacy, Campus Cartuja, University of Granada, E-18071 Granada (Spain); Cabeza, M. Carmen [Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada (Spain); Quintero, Bartolomé, E-mail: bqosso@ugr.es [Department of Physical Chemistry, Faculty of Pharmacy, University of Granada, E-18071 Granada (Spain)

    2013-06-27

    Graphical abstract: -- Highlights: •We examinate stability of L-cysteine capped CdTe QD. •Factors influence QD fluorescence response are controlled. •Application in copper deficiency analysis is made. •We report comparison with other techniques. -- Abstract: The catalytic activity of copper ion gives, from the physiological point of view, a central role in many biological processes. Variations in the composition and location of cellular copper have been addressed given their physiological and pathological consequences. In this paper L-cysteine capped CdTe quantum dots is used for the fluorimetric determination of Cu(II) in biological samples from healthy individuals and patients admitted to the Intensive Care Units (ICU). An acceptable homogeneity in the CdTe QDs size has been obtained with an average value of 3 nm. No significant alterations in the spectral properties were observed for 2 months when stored in vacutainers at 6 °C and a concentration of approximately 2 μM. Data from oxidative stress markers such superoxide dismutase, total antioxidant capacity and DNA damage can be correlated with a Cu(II) deficiency for the ICU patients as measured by flame-atomic absorption spectroscopy (FAAS) and inductively coupled plasma source mass spectrometry (ICP-MS). Aqueous solutions 0.3 μM of L-cysteine capped CdTe QDs in MOPS buffer (6 mM, pH 7.4) used at 21 °C in the range 15–60 min after preparation of the sample for the measurements of fluorescence gives contents in Cu(II) for erythrocytes in good agreement with those obtained in FAAS and ICP-MS but the comparative ease of use makes the fluorimetric technique more suitable than the other two techniques for routine analysis.

  9. Characterization of L-cysteine capped CdTe quantum dots and application to test Cu(II) deficiency in biological samples from critically ill patients

    International Nuclear Information System (INIS)

    Graphical abstract: -- Highlights: •We examinate stability of L-cysteine capped CdTe QD. •Factors influence QD fluorescence response are controlled. •Application in copper deficiency analysis is made. •We report comparison with other techniques. -- Abstract: The catalytic activity of copper ion gives, from the physiological point of view, a central role in many biological processes. Variations in the composition and location of cellular copper have been addressed given their physiological and pathological consequences. In this paper L-cysteine capped CdTe quantum dots is used for the fluorimetric determination of Cu(II) in biological samples from healthy individuals and patients admitted to the Intensive Care Units (ICU). An acceptable homogeneity in the CdTe QDs size has been obtained with an average value of 3 nm. No significant alterations in the spectral properties were observed for 2 months when stored in vacutainers at 6 °C and a concentration of approximately 2 μM. Data from oxidative stress markers such superoxide dismutase, total antioxidant capacity and DNA damage can be correlated with a Cu(II) deficiency for the ICU patients as measured by flame-atomic absorption spectroscopy (FAAS) and inductively coupled plasma source mass spectrometry (ICP-MS). Aqueous solutions 0.3 μM of L-cysteine capped CdTe QDs in MOPS buffer (6 mM, pH 7.4) used at 21 °C in the range 15–60 min after preparation of the sample for the measurements of fluorescence gives contents in Cu(II) for erythrocytes in good agreement with those obtained in FAAS and ICP-MS but the comparative ease of use makes the fluorimetric technique more suitable than the other two techniques for routine analysis

  10. CHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE ACTIVE GALACTIC NUCLEI. II. HOST BULGE PROPERTIES AND BLACK HOLE MASS ESTIMATES

    Energy Technology Data Exchange (ETDEWEB)

    Benitez, Erika; Cruz-Gonzalez, Irene; Martinez, Benoni; Jimenez-Bailon, Elena [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 70-264, Mexico D.F. 04510 (Mexico); Mendez-Abreu, Jairo; Lopez-Martin, Luis [Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife (Spain); Fuentes-Carrera, Isaura [Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional (ESFM-IPN), U.P. Adolfo Lopez Mateos, Mexico D.F. 07730 (Mexico); Chavushyan, Vahram [Instituto Nacional de Astrofisica, Optica y Electronica, Apdo. Postal 51-216, 72000 Puebla (Mexico); Leon-Tavares, Jonathan, E-mail: erika@astro.unam.mx [Aalto University Metsaehovi Radio Observatory, Metsaehovintie 114, 02540 Kylmaelae (Finland)

    2013-02-15

    We present a study of the host bulge properties and their relations with the black hole mass for a sample of 10 intermediate-type active galactic nuclei (AGNs). Our sample consists mainly of early-type spirals, four of them hosting a bar. For 70{sup +10} {sub -17}% of the galaxies, we have been able to determine the type of the bulge, and find that these objects probably harbor a pseudobulge or a combination of classical bulge/pseudobulge, suggesting that pseudobulges might be frequent in intermediate-type AGNs. In our sample, 50% {+-} 14% of the objects show double-peaked emission lines. Therefore, narrow double-peaked emission lines seem to be frequent in galaxies harboring a pseudobulge or a combination of classical bulge/pseudobulge. Depending on the bulge type, we estimated the black hole mass using the corresponding M {sub BH}-{sigma}* relation and found them within a range of 5.69 {+-} 0.21 < log M {sup {sigma}}*{sub BH} < 8.09 {+-} 0.24. Comparing these M {sup {sigma}}*{sub BH} values with masses derived from the FWHM of H{beta} and the continuum luminosity at 5100 A from their SDSS-DR7 spectra (M {sub BH}), we find that 8 out of 10 (80{sup +7} {sub -17}%) galaxies have black hole masses that are compatible within a factor of 3. This result would support that M {sub BH} and M {sup {sigma}}*{sub BH} are the same for intermediate-type AGNs, as has been found for type 1 AGNs. However, when the type of the bulge is taken into account, only three out of the seven (43{sup +18} {sub -15}%) objects of the sample have their M {sup {sigma}}*{sub BH} and M {sub BH} compatible within 3{sigma} errors. We also find that estimations based on the M {sub BH}-{sigma}* relation for pseudobulges are not compatible in 50% {+-} 20% of the objects.

  11. The role of the father as the object of the child's attachment

    Directory of Open Access Journals (Sweden)

    Zlatka Cugmas

    2001-09-01

    Full Text Available The theory of attachment does consider the possibility of the child developing attachment toward other people, e.g., the father or the grandmother, however, it assigns the primary role of the object of attachment to the mother. The main issue of this contribution is to answer the following questions on the basis of studying literature on attachment: can the father be the object of attachment; is he in this role equally important as the mother; can the child's anxious attachment to the mother be replaced with a secure attachment to the father; and does the amount of time the father spends with the child play an important role in the development of the child's attachment toward him. Five criteria developed by Ijzendoorn, Sagi and Lambermon (1992 to test whether caregivers are objects of the child's attachment. I found (i that fathers can be objects of attachment, however, their influence on the child's later social-emotional development differs in quality from the influence of the mother, (ii that a compensation of the child's anxious attachment to the mother with a secure attachment to the father is possible, but not complete, and (iii that the impact of the time the father spends with the child on the child's attachment is more dependent on other factors, such as the mother's occupation. In future research it would be necessary to control the role of the child's sex, the culture he/she lives in and related factors.

  12. A volume-limited sample of X-ray galaxy groups and clusters - II. X-ray cavity dynamics

    CERN Document Server

    Panagoulia, E K; Sanders, J S; Hlavacek-Larrondo, J

    2014-01-01

    We present the results of our study of a volume-limited sample (z <= 0.071) of 101 X-ray galaxy groups and clusters, in which we explore the X-ray cavity energetics. Out of the 101 sources in our parent sample, X-ray cavities are found in 30 of them, all of which have a central cooling time of less than3 Gyr. New X-ray cavities are detected in three sources. We focus on the subset of sources that have a central cooling time of less than 3 Gyr, whose active galactic nucleus (AGN) duty cycle is approximately 61 percent (30/49). This rises to over 80 percent for a central cooling time of less than 0.5 Gyr. When projection effects and central radio source detection rates are considered, the actual duty cycle is probably much higher. In addition, we show that data quality strongly affects the detection rates of X-ray cavities. After calculating the cooling luminosity and cavity powers of each source with cavities, it is evident that the bubbling process induced by the central AGN has to be, on average, continuo...

  13. Ternary ion-association complex based ion imprinted polymers (IIPs) for trace determination of palladium(II) in environmental samples

    International Nuclear Information System (INIS)

    A new ion imprinted polymer (IIP) material was synthesized by co-polymerization of palladium-iodide-vinyl pyridinium/palladium-thiocyanate-vinyl pyridinium ion ternary ion-association complex taken in methanol/DMSO with 2-hydroxyethyl methacrylate (functional monomer) and ethylene glycol dimethacrylate (crosslinking monomer) in the presence of 2,2'-azobisisobutryonitrile (initiator). The imprinted anionic species [PdI4]2- or [Pd(SCN)4]2- were removed by leaching the dried and powdered materials particles for 18 h with 6 M HCl to obtain leached IIP particles. Non-imprinted/control polymers were also prepared in a similar fashion without the template. Various parameters that influence the percent extraction of palladium, viz. concentration of KI or KSCN, pH, weight of polymer particles, preconcentration and elution times, aqueous phase volume, etc., were systematically studied for both the systems, i.e., in batch as well as flow injection modes. As the on-line flow injection-flame atomic absorption spectrometric (FI-FAAS) allow offer higher enrichment factor, better precision and can analyze more samples for a given time, compared to batch method, this procedure is preferred for the analysis of palladium present in the street/fan blade dust samples collected from busy cities of India and the values obtained were compared with the standard ICPMS values

  14. Deriving Photometric Redshifts using Fuzzy Archetypes and Self-Organizing Maps. II. Comparing Sampling Techniques Using Mock Data

    CERN Document Server

    Speagle, Joshua S

    2015-01-01

    In a companion paper, we proposed combining large numbers of "fuzzy archetypes" with Self-Organizing Maps (SOMs) to derive photometric redshifts in a data-driven way. In this paper, we investigate the performance of several sampling approaches that build on this general idea using a mock catalog designed to approximately simulate LSST ($ugrizY$) and Euclid ($YJH$) data from $z=0-6$ at fixed LSST $Y=24$ mag. We test eight different approaches: two brute-force methods, two Markov Chain Monte Carlo (MCMC)-based methods, two hierarchical sampling methods, and two "quick-search" methods based on quantities derived during the initial SOM training process. We find most methods perform reasonably well with small catastrophic outlier fractions and are able to robustly identify redshift probability distribution functions that are multi-modal and/or poorly constrained. Once these insecure objects are removed, the results are generally in good agreement with the strict accuracy requirements necessary to meet Euclid weak ...

  15. Ternary ion-association complex based ion imprinted polymers (IIPs) for trace determination of palladium(II) in environmental samples

    Energy Technology Data Exchange (ETDEWEB)

    Daniel, Sobhi [Regional Research Laboratory (CSIR), Inorganic and Analytical Chemistry, Industrial Estate, P.O. Pappanamcode, Trivandrum, Kerala 695019 (India); Praveen, R.S. [Regional Research Laboratory (CSIR), Inorganic and Analytical Chemistry, Industrial Estate, P.O. Pappanamcode, Trivandrum, Kerala 695019 (India); Rao, Talasila Prasada [Regional Research Laboratory (CSIR), Inorganic and Analytical Chemistry, Industrial Estate, P.O. Pappanamcode, Trivandrum, Kerala 695019 (India)]. E-mail: tprasadarao@rediffmail.com

    2006-06-07

    A new ion imprinted polymer (IIP) material was synthesized by co-polymerization of palladium-iodide-vinyl pyridinium/palladium-thiocyanate-vinyl pyridinium ion ternary ion-association complex taken in methanol/DMSO with 2-hydroxyethyl methacrylate (functional monomer) and ethylene glycol dimethacrylate (crosslinking monomer) in the presence of 2,2'-azobisisobutryonitrile (initiator). The imprinted anionic species [PdI{sub 4}]{sup 2-} or [Pd(SCN){sub 4}]{sup 2-} were removed by leaching the dried and powdered materials particles for 18 h with 6 M HCl to obtain leached IIP particles. Non-imprinted/control polymers were also prepared in a similar fashion without the template. Various parameters that influence the percent extraction of palladium, viz. concentration of KI or KSCN, pH, weight of polymer particles, preconcentration and elution times, aqueous phase volume, etc., were systematically studied for both the systems, i.e., in batch as well as flow injection modes. As the on-line flow injection-flame atomic absorption spectrometric (FI-FAAS) allow offer higher enrichment factor, better precision and can analyze more samples for a given time, compared to batch method, this procedure is preferred for the analysis of palladium present in the street/fan blade dust samples collected from busy cities of India and the values obtained were compared with the standard ICPMS values.

  16. A portable DNAzyme-based optical biosensor for highly sensitive and selective detection of lead (II) in water sample.

    Science.gov (United States)

    Yildirim, Nimet; Long, Feng; He, Miao; Gao, Ce; Shi, Han-Chang; Gu, April Z

    2014-11-01

    A portable, rapid and cost-effective DNAzyme based sensor for lead ions detection in water samples has been developed using an optical fiber sensor platform. The presence of Pb(2+) cleaves the DNAzymes and releases the fluorescent labeled fragments, which further hybridize with the complementary strands immobilized on the optic fiber sensor surface. Subsequent fluorescent signals of the hybridized fluorescent labeled fragment provides quantitative information on the concentrations of Pb(2+) with a dynamic range from 2-75 nM with a detection limit of 1.03 nM (0.21 ng mL(-1)). The proposed sensor also shows good selectivity against other mono and divalent metal ions and thus holds great potential for the construction of general DNAzyme-based sensing platform for the monitoring of other heavy metal ions. The sensor can be regenerated with a 1% SDS solution (pH 1.9) over 100 times without significant deterioration of the sensor performance. This portable sensor system can be potentially applied for on-site real-time inexpensive and easy-to-use monitoring of Pb(2+) in environmental samples such as wastewater effluents or water bodies. PMID:25127641

  17. Attachment Styles, Social Skills, and Depression in College Women

    Science.gov (United States)

    Cooley, Eileen L.; Van Buren, Amy; Cole, Steven P.

    2010-01-01

    Attachment styles, social skills, and depression were studied in 3 college women using the Relationship Questionnaire (K. Bartholomew & L. M. Horowitz, 1991), the Beck Depression Inventory-II (A. T. Beck, R. A. Steer, & G. K. Brown, 1996), and the Interpersonal Competence Questionnaire (D. Buhrmester, W. Furman, M. T. Wittenberg, & H. T. Reis,…

  18. Perinatal Depression and Patterns of Attachment: A Critical Risk Factor?

    Directory of Open Access Journals (Sweden)

    Valentina Meuti

    2015-01-01

    Full Text Available Background. This study aims to verify if the presence and severity of perinatal depression are related to any particular pattern of attachment. Methods. The study started with a screening of a sample of 453 women in their third trimester of pregnancy, who were administered a survey data form, the Edinburgh Postnatal Depression Scale (EPDS and the Experience in Close Relationship (ECR. A clinical group of subjects with perinatal depression (PND, 89 subjects was selected and compared with a control group (C, regarding psychopathological variables and attachment patterns. Results. The ECR showed a prevalence of “Fearful-Avoidant” attachment style in PND group (29.2% versus 1.1%, p<0.001; additionally, the EPDS average score increases with the increasing of ECR dimensions (Avoidance and Anxiety. Conclusion. The severity of depression increases proportionally to attachment disorganization; therefore, we consider attachment as both an important risk factor as well as a focus for early psychotherapeutic intervention.

  19. The Relation of Attachment Security to Adolescents' Paternal and Peer Relationships, Depression, and Externalizing Behavior

    Science.gov (United States)

    Allen, Joseph P.; Porter, Maryfrances; McFarland, Christy; McElhaney, Kathleen Boykin; Marsh, Penny

    2007-01-01

    The relation of attachment security to multiple domains of psychosocial functioning was examined in a community sample of 167 early adolescents. Security of attachment organization, assessed using the Adult Attachment Interview, was linked to success in establishing autonomy while maintaining a sense of relatedness both with fathers and with…

  20. Role Balance and Depression among College Students: The Moderating Influence of Adult Attachment Orientations

    Science.gov (United States)

    Lopez, Frederick G.; Fons-Scheyd, Alia

    2008-01-01

    This study examined interrelationships among role balance perceptions, adult attachment orientations, and depression within an ethnically diverse, mixed-gender sample of college students. Adult attachment orientations--and particularly attachment avoidance--significantly interacted with students' role balance levels to predict their depression…

  1. No-migration variance petition. Volume 3, Revision 1: Appendix B, Attachments A through D

    Energy Technology Data Exchange (ETDEWEB)

    1990-03-01

    Volume III contains the following attachments: TRUPACT-II content codes (TRUCON); TRUPACT-II chemical list; chemical compatibility analysis for Rocky Flats Plant waste forms (Appendix 2.10.12 of TRUPACT-II safety analysis report); and chemical compatibility analyses for waste forms across all sites.

  2. Behavior of thorium-uranium (IV) phosphate-diphosphate sintered samples during leaching tests. Part II. Saturation processes

    Energy Technology Data Exchange (ETDEWEB)

    Clavier, N. [Groupe de Radiochimie, Institut de Physique Nucleaire, Bat.100, Universite Paris-Sud-11, 91406 Orsay (France); Fou de Kerdaniel, E. du [Groupe de Radiochimie, Institut de Physique Nucleaire, Bat.100, Universite Paris-Sud-11, 91406 Orsay (France); Dacheux, N. [Groupe de Radiochimie, Institut de Physique Nucleaire, Bat.100, Universite Paris-Sud-11, 91406 Orsay (France)]. E-mail: dacheux@ipno.in2p3.fr; Le Coustumer, P. [CDGA, Universite de Bordeaux I, BP 19, Avenue des facultes, 33405 Talence (France); Drot, R. [Groupe de Radiochimie, Institut de Physique Nucleaire, Bat.100, Universite Paris-Sud-11, 91406 Orsay (France); Ravaux, J. [LCSM, Universite H. Poincare - Nancy I, BP 239, 54506 Vandoeuvre les Nancy (France); Simoni, E. [Groupe de Radiochimie, Institut de Physique Nucleaire, Bat.100, Universite Paris-Sud-11, 91406 Orsay (France)

    2006-03-01

    Sintered pellets of thorium-uranium (IV) phosphate-diphosphate solid solutions ({beta}-Th{sub 4-x}U {sub x}(PO{sub 4}){sub 4}P{sub 2}O{sub 7}, {beta}-TUPD) were altered in several acidic media. All the results reported in the first part of this paper confirmed the good chemical durability of the samples. The evolution of the normalized weight loss showed that, in several media, thorium quickly precipitates in a neoformed phosphate-based phase while uranium (IV) is released in the leachate due to its oxidation into the uranyl form. The characterization of neoformed phases was carried out through several techniques involving grazing XRD, infrared and {mu}-Raman spectroscopies, EPMA, SEM and TEM. SEM micrographies showed that the dissolution mainly occurs at the grain boundaries, leading to the break away of the grains: only the first 15 {mu}m are altered for 2 months in 10{sup -1} M HNO{sub 3}. From EPMA and BET measurements, neither the chemical composition nor the specific surface area are significantly modified. Near equilibrium, two neoformed phases were observed and identified by grazing XRD and/or {mu}-Raman spectroscopy at the surface of the leached pellets: one is found to be amorphous and progressively turns into the crystallized thorium phosphate-hydrogenphosphate hydrate (TPHPH). From the results obtained, a chemical scheme of the dissolution of {beta}-TUPD sintered samples is proposed. The behavior of the actinides in the gelatinous phase appears mainly driven by their oxidation state: thorium remains in the tetrapositive state and is quickly and quantitatively precipitated while uranium (IV) is oxidized into uranyl then released in the leachate. The Th-precipitation as TPHPH first appears scattered then covers the entire surface of the pellet, inducing a delay of the actinides release in the leachate. Both phases act as protective layers and should induce the significant delay of the release of actinides (Th, U) to the biosphere.

  3. Mid-infrared properties of luminous infrared galaxies. II. Probing the dust and gas physics of the goals sample

    Energy Technology Data Exchange (ETDEWEB)

    Stierwalt, S.; Armus, L.; Diaz-Santos, T.; Marshall, J.; Haan, S.; Howell, J.; Murphy, E. J.; Inami, H.; Petric, A. O. [Spitzer Science Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Charmandaris, V. [Department of Physics, University of Crete, GR-71003 Heraklion (Greece); Evans, A. S. [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Iwasawa, K. [INAF-Observatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna (Italy); Kim, D. C. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Rich, J. A. [The Observatories, Carnegie Institute of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Spoon, H. W. W. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); U, V., E-mail: sabrinas@virginia.edu [Department of Physics and Astronomy, University of California, Riverside, CA 92507 (United States)

    2014-08-01

    The Great Observatories All-sky LIRG Survey (GOALS) is a comprehensive, multiwavelength study of luminous infrared galaxies (LIRGs) in the local universe. Here, we present the results of a multi-component, spectral decomposition analysis of the low-resolution mid-infrared (MIR) Spitzer Infrared Spectrograph spectra from 5-38 μm of 244 LIRG nuclei. The detailed fits and high-quality spectra allow for characterization of the individual polycyclic aromatic hydrocarbon (PAH) features, warm molecular hydrogen emission, and optical depths for both silicate dust grains and water ices. We find that starbursting LIRGs, which make up the majority of the GOALS sample, are very consistent in their MIR properties (i.e., τ{sub 9.7μm}, τ{sub ice}, neon line ratios, and PAH feature ratios). However, as their EQW{sub 6.2{sub μm}} decreases, usually an indicator of an increasingly dominant active galactic nucleus (AGN), LIRGs cover a larger spread in these MIR parameters. The contribution from PAH emission to the total IR luminosity (L(PAH)/L(IR)) in LIRGs varies from 2%-29% and LIRGs prior to their first encounter show significantly higher L(PAH)/L(IR) ratios on average. We observe a correlation between the strength of the starburst (represented by IR8 = L{sub IR}/L{sub 8{sub μm}}) and the PAH fraction at 8 μm but no obvious link between IR8 and the 7.7 to 11.3 PAH ratio, suggesting that the fractional photodissociation region (PDR) emission, and not the overall grain properties, is associated with the rise in IR8 for galaxies off the starburst main sequence. We detect crystalline silicate features in ∼6% of the sample but only in the most obscure sources (s{sub 9.7{sub μm}} < –1.24). Ice absorption features are observed in ∼11% (56%) of GOALS LIRGs (ULIRGs) in sources with a range of silicate depths. Most GOALS LIRGs have L(H{sub 2})/L(PAH) ratios elevated above those observed for normal star-forming galaxies and exhibit a trend for increasing L(H{sub 2})/L

  4. Mid-infrared properties of luminous infrared galaxies. II. Probing the dust and gas physics of the goals sample

    International Nuclear Information System (INIS)

    The Great Observatories All-sky LIRG Survey (GOALS) is a comprehensive, multiwavelength study of luminous infrared galaxies (LIRGs) in the local universe. Here, we present the results of a multi-component, spectral decomposition analysis of the low-resolution mid-infrared (MIR) Spitzer Infrared Spectrograph spectra from 5-38 μm of 244 LIRG nuclei. The detailed fits and high-quality spectra allow for characterization of the individual polycyclic aromatic hydrocarbon (PAH) features, warm molecular hydrogen emission, and optical depths for both silicate dust grains and water ices. We find that starbursting LIRGs, which make up the majority of the GOALS sample, are very consistent in their MIR properties (i.e., τ9.7μm, τice, neon line ratios, and PAH feature ratios). However, as their EQW6.2μm decreases, usually an indicator of an increasingly dominant active galactic nucleus (AGN), LIRGs cover a larger spread in these MIR parameters. The contribution from PAH emission to the total IR luminosity (L(PAH)/L(IR)) in LIRGs varies from 2%-29% and LIRGs prior to their first encounter show significantly higher L(PAH)/L(IR) ratios on average. We observe a correlation between the strength of the starburst (represented by IR8 = LIR/L8μm) and the PAH fraction at 8 μm but no obvious link between IR8 and the 7.7 to 11.3 PAH ratio, suggesting that the fractional photodissociation region (PDR) emission, and not the overall grain properties, is associated with the rise in IR8 for galaxies off the starburst main sequence. We detect crystalline silicate features in ∼6% of the sample but only in the most obscure sources (s9.7μm < –1.24). Ice absorption features are observed in ∼11% (56%) of GOALS LIRGs (ULIRGs) in sources with a range of silicate depths. Most GOALS LIRGs have L(H2)/L(PAH) ratios elevated above those observed for normal star-forming galaxies and exhibit a trend for increasing L(H2)/L(PAH) ratio with increasing L(H2). While star formation appears to be the

  5. Dynamics of the NGC 4636 globular cluster system II. Improved constraints from a large sample of globular cluster velocities

    CERN Document Server

    Schuberth, Ylva; Hilker, Michael; Salinas, Ricardo; Dirsch, Boris; Larsen, Soeren S

    2012-01-01

    We present new radial velocities for 289 globular clusters around NGC 4636, the southernmost giant elliptical galaxy of the Virgo cluster. The data were obtained with FORS2/MXU at the Very Large Telescope. Together with data analysed in an earlier study (Schuberth et al. 2006), we now have a sample of 460 globular cluster velocities out to a radius of 12 arcmin (60 kpc) available - one of the largest of its kind. This new data set also provides a much more complete angular coverage. Moreover, we present new kinematical data of the inner stellar population of NGC 4636. We perform an updated Jeans analysis, using both stellar and GC data, to better constrain the dark halo properties. We find a stellar M/L-ratio of 5.8 in the R-band, higher than expected from single stellar population synthesis. We model the dark halo by cored and cuspy analytical halo profiles and consider different anisotropies for the tracer populations. Properties of NFW halos lie well within the expected range of cosmological simulations. C...

  6. A low-luminosity type-1 QSO sample: II. Tracing circumnuclear star formation in HE 1029-1831 with SINFONI

    CERN Document Server

    Busch, Gerold; Scharwächter, Julia; Eckart, Andreas; Valencia-S., Mónica; Moser, Lydia; Husemann, Bernd; Krips, Melanie; Zuther, Jens

    2014-01-01

    Circumnuclear star formation and AGN feedback is believed to play a critical role in the context of galaxy evolution. The low-luminosity QSO (LLQSO) sample that contains 99 of the closest AGN with redshift z<=0.06 fills the gap between the local AGN population and high-redshift QSOs that is essential to understand the AGN evolution with redshift. In this paper, we present the results of near-infrared H+K-integral field spectroscopy of the inner kiloparsecs of the LLQSO HE 1029-1831 with SINFONI. Line maps show that ionized hydrogen gas is located in spiral arms within the stellar bar and in a circumnuclear ring. Line fluxes and diagnostic line ratios indicate recent or ongoing star formation in the circumnuclear region and the presence of young and intermediate-age stellar populations in the bulge. In particular, we find traces of an intense starburst in the circumnuclear region that has begun around 100 Myr ago but has declined to a fraction of the maximum intensity now. We estimate the dynamical bulge ma...

  7. Effect of KNO3 to remove silver interferences in the determination of mercury(II: Application in milk and breast milk samples

    Directory of Open Access Journals (Sweden)

    A. Farahi

    2015-06-01

    Full Text Available Mercury determination was performed at rotating silver electrode (RSE using square wave voltammetry (SWV in electrolytic mixture of HCl (0.1 mol L−1 and KNO3 (0.2 mol L−1. The reproducibility, sensitivity and accuracy are good, provided the proper instrumental parameters and supporting electrolyte are used. The relationship between the peak current of mercury(II and its concentration is linear with regression equation: I(μA = 0.784 [Hg(II] + 49.5 (r2 = 0.9878 in the dynamic range from 1.0 × 10−7 to 8.0 × 10−4 mol L−1. The detection limit (DL,3σ and quantification limit (QL,10σ were 4.61 × 10−8 mol L−1 and 15.3 × 10−8 mol L−1, respectively. The relative standard deviation (RSD for seven replicate analysis of a solution containing 5.0 × 10−5 mol L−1 was 2.19%. Possible effects of Cu, Co, Fe, MnO4, Zn, were investigated but did not cause any significant interferences. Immobilization of mercury(II on the surface of rotating silver electrode obeyed to the Langmuir adsorption isotherm. The calculated ΔG°ads value showed that the interaction between mercury and silver electrodes is mainly controlled by a chemisorption process. This methodology was potentially applied for mercury determination in milk and breast milk samples.

  8. The effect of surface anisotropy in the slippery zone of Nepenthes alata pitchers on beetle attachment.

    Science.gov (United States)

    Gorb, Elena V; Gorb, Stanislav N

    2011-01-01

    The slippery zone in pitchers of the carnivorous plant Nepenthes alata bears scattered prominent lunate cells and displays continuous epicuticular crystalline wax coverage. The aim of this study was to examine the influence of the surface anisotropy, caused by the shape of lunate cells, on insect attachment ability. Traction tests with ladybird beetles Coccinella septempunctata were performed in two types of experiments, where surface samples of (1) intact pitchers, (2) chemically de-waxed pitchers, and (3) their polymer replicas were placed horizontally. Beetle traction forces were measured when they walked on test surfaces in either an upward (towards the peristome) or downward (towards the pitcher bottom) direction, corresponding to the upright or inverted positions of the pitcher. On intact pitcher surfaces covered with both lunate cells and wax crystals, experiments showed significantly higher forces in the direction towards the pitcher bottom. To distinguish between the contributions, from claw interlocking and pad adhesion, to insect attachment on the pitcher surfaces, intact versus claw-ablated beetles were used in the second type of experiment. On both de-waxed plant samples and their replicas, intact insects generated much higher forces in the downward direction compared to the upward one, whereas clawless insects did not. These results led to the conclusion that, (i) due to the particular shape of lunate cells, the pitcher surface has anisotropic properties in terms of insect attachment, and (ii) claws were mainly responsible for attachment enhancement in the downward pitcher direction, since, in this direction, they could interlock with overhanging edges of lunate cells. PMID:21977443

  9. The effect of surface anisotropy in the slippery zone of Nepenthes alata pitchers on beetle attachment

    Directory of Open Access Journals (Sweden)

    Elena V. Gorb

    2011-06-01

    Full Text Available The slippery zone in pitchers of the carnivorous plant Nepenthes alata bears scattered prominent lunate cells and displays continuous epicuticular crystalline wax coverage. The aim of this study was to examine the influence of the surface anisotropy, caused by the shape of lunate cells, on insect attachment ability. Traction tests with ladybird beetles Coccinella septempunctata were performed in two types of experiments, where surface samples of (1 intact pitchers, (2 chemically de-waxed pitchers, and (3 their polymer replicas were placed horizontally. Beetle traction forces were measured when they walked on test surfaces in either an upward (towards the peristome or downward (towards the pitcher bottom direction, corresponding to the upright or inverted positions of the pitcher. On intact pitcher surfaces covered with both lunate cells and wax crystals, experiments showed significantly higher forces in the direction towards the pitcher bottom. To distinguish between the contributions, from claw interlocking and pad adhesion, to insect attachment on the pitcher surfaces, intact versus claw-ablated beetles were used in the second type of experiment. On both de-waxed plant samples and their replicas, intact insects generated much higher forces in the downward direction compared to the upward one, whereas clawless insects did not. These results led to the conclusion that, (i due to the particular shape of lunate cells, the pitcher surface has anisotropic properties in terms of insect attachment, and (ii claws were mainly responsible for attachment enhancement in the downward pitcher direction, since, in this direction, they could interlock with overhanging edges of lunate cells.

  10. Ultrasensitive and rapid screening of mercury(II) ions by dual labeling colorimetric method in aqueous samples and applications in mercury-poisoned animal tissues

    International Nuclear Information System (INIS)

    Highlights: • Rapid and ultrasensitive screening of mercury ions are achieved by using gold nanoparticles based colorimetric method. • Dual labeling strategy is adopted for sensing signal amplification. • The proposed method is successfully used for analysis of mercury-poisoned animal tissues. - Abstract: Rapid and ultrasensitive detection of trace heavy metal mercury(II) ions (Hg2+) are of significant importance due to the induced serious risks for environment and human health. This presented article reports the gold nanoparticle-based dual labeling colorimetric method (Dual-COLO) for ultrasensitive and rapid detection of Hg2+ using the specific thymine–Hg2+–thymine (T–Hg2+–T) as recognition system and the dual labeling strategy for signal amplification. Both qualitative and quantitative detections of Hg2+ are achieved successfully in aqueous samples. More importantly, the achieved detection limit of 0.005 ng mL−1 (0.025 nM) without any instruments is very competitive to other rapid detection methods even ICP-MS based methods. This Dual-COLO method is also applied directly for real water sample monitoring and, more importantly, applied in analysis of mercury poisoned animal tissues and body fluidic samples, indicating a potentially powerful and promising tool for environmental monitoring and food safety control

  11. Ultrasensitive and rapid screening of mercury(II) ions by dual labeling colorimetric method in aqueous samples and applications in mercury-poisoned animal tissues

    Energy Technology Data Exchange (ETDEWEB)

    Deng, Yi; Wang, Xin; Xue, Feng [School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009 (China); Zheng, Lei [School of Medical Engineering, Hefei University of Technology, Hefei 230009 (China); Liu, Jian [School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009 (China); Yan, Feng [Applied Physics Department, Hong Kong Polytechnic University, Hong Kong (China); Xia, Fan, E-mail: xiafan@hust.edu.cn [School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074 (China); Chen, Wei, E-mail: chenweishnu@163.com [School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009 (China)

    2015-04-08

    Highlights: • Rapid and ultrasensitive screening of mercury ions are achieved by using gold nanoparticles based colorimetric method. • Dual labeling strategy is adopted for sensing signal amplification. • The proposed method is successfully used for analysis of mercury-poisoned animal tissues. - Abstract: Rapid and ultrasensitive detection of trace heavy metal mercury(II) ions (Hg{sup 2+}) are of significant importance due to the induced serious risks for environment and human health. This presented article reports the gold nanoparticle-based dual labeling colorimetric method (Dual-COLO) for ultrasensitive and rapid detection of Hg{sup 2+} using the specific thymine–Hg{sup 2+}–thymine (T–Hg{sup 2+}–T) as recognition system and the dual labeling strategy for signal amplification. Both qualitative and quantitative detections of Hg{sup 2+} are achieved successfully in aqueous samples. More importantly, the achieved detection limit of 0.005 ng mL{sup −1} (0.025 nM) without any instruments is very competitive to other rapid detection methods even ICP-MS based methods. This Dual-COLO method is also applied directly for real water sample monitoring and, more importantly, applied in analysis of mercury poisoned animal tissues and body fluidic samples, indicating a potentially powerful and promising tool for environmental monitoring and food safety control.

  12. Boosting Lya and HeII 1640A Line Fluxes from Pop III Galaxies: Stochastic IMF Sampling and Departures from Case-B

    CERN Document Server

    Mas-Ribas, Lluís; Forero-Romero, Jaime E

    2016-01-01

    We revisit calculations of nebular hydrogen Lya and HeII 1640A line strengths for population III galaxies, undergoing continuous and bursts of star formation. We focus on initial mass functions (IMFs) motivated by recent theoretical studies, which generally span a lower range of stellar masses than earlier works. We also account for case-B departures and the stochastic sampling of the IMF. In agreement with previous works, we find that departures from case-B can enhance the Lya flux by a factor of a few, but we argue that this enhancement is driven mainly by collisional excitation and ionization, and not due to photoionization from the n = 2 state of atomic hydrogen. The increased sensitivity of the Lya flux to the high-energy end of the galaxy spectrum makes it more subject to stochastic sampling of the IMF. The latter introduces a dispersion in the predicted nebular line fluxes around the deterministic value by as much as a factor of ~4. In contrast, the stochastic sampling of the IMF has less impact on the...

  13. Dispersive liquid-liquid microextraction of lead(II) as 5-(4-dimethylaminobenzylidene) rhodanine chelates from food and water samples.

    Science.gov (United States)

    Alothman, Zeid A; Al-Shaalan, Nora H; Habila, Mohamed A; Unsal, Yunus E; Tuzen, Mustafa; Soylak, Mustafa

    2015-02-01

    A dispersive liquid-liquid microextraction procedure for lead(II) as its 5-(4-dimethylaminobenzylidene) rhodanine complex has been established prior to its microsampling flame atomic absorption spectrometric determination. The influences of various analytical parameters including pH, solvent type and volume, dispersive solvent type and volume, 5-(4-dimethylaminobenzylidene) rhodanine amount, salt effect, and centrifugation time and speed were investigated. The effects of certain alkali, alkaline earth, and transition metal ions on the quantitative extraction of lead(II) were also studied. Quantitative recoveries were obtained at pH 6. The enrichment factor was calculated as 125. The detection limit for lead is 1.1 μg/L. The accuracy of the method was tested with the additions recovery test and analysis of the standard reference materials (SPS-WW2 waste water, NIST SRM 1515 apple leaves, and TMDA-51.3 fortified water). Applications of the present procedure were tested by analyzing water and food samples. PMID:25618567

  14. Polarographic determination of Sn(II) in samples containing Sn(IV) such as in 99m-Technetium radiopharmaceutical kits

    Energy Technology Data Exchange (ETDEWEB)

    Lejeune, R.; Thunus, J.; Thunus, L. [Universite de Liege, Institut de Pharmacie, Service de Chimie Analytique, Liege (Belgium)

    1996-10-10

    A sensitive, alternative method to titrimetry or spectrophotometry for the evaluation of tin(II) ions (0-5{mu}gml{sup -1}) in matrices containing tin(IV) ions was investigated. Differential pulse polarography was chosen. The supporting electrolyte was a buffer solution 0.7M NaF/0.1M NaNO{sub 3}/0.1M HEPES at pH 8. The potential was swept from -500 to -800mV vs. Ag/AgCl/saturated KCl, using a dropping mercury electrode with a drop time of 1s, a sweep rate of 4mVs{sup -1}, a differential modulation with a pulse time of 40ms, a delay time of 20ms, a measurement time of 20ms and a pulse amplitude of -50mV. In technetium labelling kits, containing medronic acid (methylenediphosphonic acid), 10{sup -3}M ZnCl{sub 2} was added to the supporting electrolyte in order to eliminate the interference of medronic acid. This polarographic method is suitable for the determination of Sn(II) in samples containing Sn(IV) with or without medronic and ascorbic acid.

  15. Attachment at work and performance.

    Science.gov (United States)

    Neustadt, Elizabeth A; Chamorro-Premuzic, Tomas; Furnham, Adrian

    2011-09-01

    This paper examines the relations between self-reported attachment orientation at work and personality, self-esteem, trait emotional intelligence (aka emotional self-efficacy), and independently assessed career potential and job performance. Self-report data were collected from 211 managers in an international business in the hospitality industry; independent assessments of these managers' job performance and career potential were separately obtained from the organization. A self-report measure of romantic attachment was adapted for application in the work context; a two-factor solution was found for this measure. Secure/autonomous attachment orientation at work was positively related to self-esteem, trait emotional intelligence, extraversion, agreeableness, and conscientiousness, and also to job performance. Not only was secure/autonomous attachment orientation at work statistically predictive of job performance, but the new measure also made a distinct contribution, beyond conscientiousness, to this prediction. PMID:21838647

  16. Electron attachment to fluorocarbon radicals

    Science.gov (United States)

    Shuman, Nicholas

    2014-10-01

    Most plasma environments contain populations of short-lived species such as radicals, the chemistry of which can have significant effects on the overall chemistry of the system. However, few experimental measurements of the kinetics of electron attachment to radicals exist due to the inherent difficulties of working with transient species. Calculations from first principles have been attempted, but are arduous and, because electron attachment is so sensitive to the specifics of the potential surface, their accuracy has not been established. Electron attachment to small fluorocarbon radicals is particularly important, as the data are needed for predictive modeling of plasma etching of semiconductor materials, a key process in the industrial fabrication of microelectronics. We have recently developed a novel flowing afterglow technique to measure several types of otherwise difficult to study plasma processes, including thermal electron attachment to radicals. Variable Electron and Neutral Density Attachment Mass Spectrometry (VENDAMS) exploits dissociative electron attachment in a weakly ionized plasma as a radical source. Here, we apply VENDAMS to a series of halofluorocarbon precursors in order to measure the kinetics of thermal electron attachment to fluorocarbon radicals. Results are presented for CF2, CF3, C2F5,C2F3,1-C3F7, 2-C3F7, and C3F5 from 300 K to 900 K. Both the magnitude and the temperature dependences of rate coefficients as well as product branching between associative and dissociative attachment are highly system specific; however, thermal attachment to all species is inefficient, never exceeding 5% of the collision rate. The data are analyzed using a recently developed kinetic modeling approach, which uses extended Vogt-Wannier theory as a starting point, accounts for dynamic effects such as coupling between the electron and nuclear motions through empirically validated functional forms, and finally uses statistical theory to determine the fate of

  17. Attachment Narratives in Refugee Children

    DEFF Research Database (Denmark)

    De Haene, L.; Dalgård, Nina Thorup; Montgomery, E.;

    2013-01-01

    J Trauma Stress. 2013 Jun;26(3):413-7. doi: 10.1002/jts.21820. Attachment narratives in refugee children: interrater reliability and qualitative analysis in pilot findings from a two-site study.......J Trauma Stress. 2013 Jun;26(3):413-7. doi: 10.1002/jts.21820. Attachment narratives in refugee children: interrater reliability and qualitative analysis in pilot findings from a two-site study....

  18. Attachment to pets and interpersonal relationships: Can a four-legged friend replace a two-legged one?

    Directory of Open Access Journals (Sweden)

    Iris Smolkovic

    2012-05-01

    Full Text Available The goal of the present research is to investigate pet attachment and measure the connection between owner-pet attachment and interpersonal attachment characteristics of dog owners and cat owners, social support and loneliness. From a sample of 268 dog and 97 cat owners, significant differences on pet attachment appeared between pet owners’ gender, owners living location, kinds of pets and the length of ownership. The pedigree of pets influenced owner-pet attachment levels. 

  19. Attachment to pets and interpersonal relationships: Can a four-legged friend replace a two-legged one?

    Directory of Open Access Journals (Sweden)

    Iris Smolkovic

    2012-05-01

    Full Text Available The goal of the present research is to investigate pet attachment and measure the connection between owner-pet attachment and interpersonal attachment characteristics of dog owners and cat owners, social support and loneliness. From a sample of 268 dog and 97 cat owners, significant differences on pet attachment appeared between pet owners’ gender, owners living location, kinds of pets and the length of ownership. The pedigree of pets influenced owner-pet attachment levels.

  20. Childhood sexual abuse and attachment: An intergenerational perspective

    OpenAIRE

    Kwako, Laura E.; Noll, Jennie G.; Putnam, Frank W.; Trickett, Penelope K.

    2010-01-01

    Childhood sexual abuse (CSA) is a recognized risk factor for various negative outcomes in adult survivors and their offspring. We used the Dynamic-Maturational Model of attachment theory as a framework for exploring the impact of maternal CSA on children’s attachment relationships in the context of a longitudinal sample of adult survivors of CSA and non-abused comparison mothers and their children. Results indicated that children of CSA survivors were more likely to have extreme strategies of...

  1. Attachment and Parenting in Adult Patients with Anxiety Disorders

    OpenAIRE

    Picardi, Angelo; Caroppo, Emanuele; Fabi, Elisa; Proietti, Serena; Gennaro, Giancarlo Di; Meldolesi, Giulio Nicolò; Martinotti, Giovanni

    2013-01-01

    Background: The literature suggests that dysfunctional parenting and insecure attachment may increase risk of anxiety-related psychopathology. This study aimed at testing the association between anxiety disorders, attachment insecurity and dysfunctional parenting while controlling for factors usually not controlled for in previous studies, such as gender, age, and being ill. Methods: A sample of 32 non-psychotic inpatients with SCID-I diagnosis of an anxiety disorder, either alone or in comor...

  2. Authenticity and place attachment of major visitor attractions

    OpenAIRE

    Ram, Yael; Bjork, Peter; Weidenfeld, Adi

    2016-01-01

    This paper aims to explore the relationships between place attachment and perceived authenticity of major visitor attractions. The empirical study was conducted with a sample of international tourists to major visitor attractions in two capital cities, Helsinki, Finland and Jerusalem, Israel. The results indicate a positive correlation between place attachment and authenticity. Major visitor attractions located in places with considerable heritage experience value are considered more authenti...

  3. Sampling and analysis plan for Phase II of the Bear Creek Valley Treatability Study, Oak Ridge Y-12 Plant, Oak Ridge, Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-09-01

    The Bear Creek Valley (BCV) Treatability Study is intended to provide site-specific data defining potential treatment technologies applicable to contaminated groundwater and surface water. This project directly supports Alternative 5 of the base action in the BCV Feasibility Study and indirectly supports other alternatives through proof of concept. In that role, the ultimate goal is to install a treatment system that will remove uranium and nitrate from groundwater before it reaches Bear Creek. A secondary goal is the concurrent removal of technetium and several metals that affect ecological risk. This project is intended to produce hydraulic and treatment performance data required to design the treatment system to reach those goals. This project will also generate information that can be applied at other facilities within the Oak Ridge Reservation. This report is the sampling and analysis plan (SAP) for the field work component of Phase II of the BCV Treatability Study. Field work for this phase of the BCV Treatability Study consists of environmental and media testing. The SAP addresses environmental sampling at the S-3 Site at the Oak Ridge Y-12 Plant. Samples will be taken from groundwater, surface water, seeps, effluent from test columns, effluent from an algal mat reactor, and effluent from a pilot-scale wetland. Groundwater, surface water, and seeps will be monitored continuously for field parameters and sampled for analytical parameters during pump tests conducted periodically during the investigation. In-field continuous flow tests will be conducted over an extended time period (5 weeks) to generate data on long-term treatment effects on potential treatment effects on potential treatment media including sorbents and zero valent iron, over 28 weeks for constructed wetlands treatment, and over 24 weeks for algal mats treatment.

  4. Phenotypes of non-attached Pseudomonas aeruginosa aggregates resemble surface attached biofilm.

    Directory of Open Access Journals (Sweden)

    Morten Alhede

    Full Text Available For a chronic infection to be established, bacteria must be able to cope with hostile conditions such as low iron levels, oxidative stress, and clearance by the host defense, as well as antibiotic treatment. It is generally accepted that biofilm formation facilitates tolerance to these adverse conditions. However, microscopic investigations of samples isolated from sites of chronic infections seem to suggest that some bacteria do not need to be attached to surfaces in order to establish chronic infections. In this study we employed scanning electron microscopy, confocal laser scanning microscopy, RT-PCR as well as traditional culturing techniques to study the properties of Pseudomonas aeruginosa aggregates. We found that non-attached aggregates from stationary-phase cultures have comparable growth rates to surface attached biofilms. The growth rate estimations indicated that, independently of age, both aggregates and flow-cell biofilm had the same slow growth rate as a stationary phase shaking cultures. Internal structures of the aggregates matrix components and their capacity to survive otherwise lethal treatments with antibiotics (referred to as tolerance and resistance to phagocytes were also found to be strikingly similar to flow-cell biofilms. Our data indicate that the tolerance of both biofilms and non-attached aggregates towards antibiotics is reversible by physical disruption. We provide evidence that the antibiotic tolerance is likely to be dependent on both the physiological states of the aggregates and particular matrix components. Bacterial surface-attachment and subsequent biofilm formation are considered hallmarks of the capacity of microbes to cause persistent infections. We have observed non-attached aggregates in the lungs of cystic fibrosis patients; otitis media; soft tissue fillers and non-healing wounds, and we propose that aggregated cells exhibit enhanced survival in the hostile host environment, compared with non

  5. Exploring the Link among State of Mind Concerning Childhood Attachment, Attachment in Close Relationships, Parental Bonding, and Psychopathological Symptoms in Substance Users

    Science.gov (United States)

    Musetti, Alessandro; Terrone, Grazia; Corsano, Paola; Magnani, Barbara; Salvatore, Sergio

    2016-01-01

    Background: In the present study, we have explored the link among styles of attachment and psychopathology in drug users. We know that insecure attachment predisposes the individuals the development of drug-addiction and psychopathological symptoms. However, we do not know which attachment is more frequent in drug users and which is related to particular psychopathological symptoms. The aim of the present work is to explore the relationship between childhood attachment state of mind, attachment in close relationships, parental bonding and psychopathology in sample of Italian substance users. Methods: We explored, in a sample of 70 drug users and drug-addicted patients, the childhood attachment state of mind measured by the Adult Attachment Interview, the attachment in close relationships by the Relationship Questionnaire and parental bonding measured by the Parental Bonding Instrument. The Symptom Check-List-90-R (SCL-90-R) measured psychopathological symptoms. Results: We found that parental bonding, rather than state of mind concerning childhood attachment or attachment in close relationships, is related to the psychopathological manifestation of anxiety, hostility, depression, and paranoid ideation in the sample. The latter occurs frequently in our sample, independent of state of mind concerning child attachment, attachment in close relationships, and parental bonding, suggesting its role either as a factor that favors a bad image of the participants’ own relationships or as a direct effect of consuming drugs. Conclusion: These results have clinical implications on suggesting ways of interventions that prevent drug-addiction, which should include the evaluation of attachment in the prodromic phases of substance use onset or rehabilitation programs to prevent and manage psychotic-like symptoms.

  6. Hamiltonian Dynamics of Preferential Attachment

    CERN Document Server

    Zuev, Konstantin; Krioukov, Dmitri

    2015-01-01

    Prediction and control of network dynamics are grand-challenge problems in network science. The lack of understanding of fundamental laws driving the dynamics of networks is among the reasons why many practical problems of great significance remain unsolved for decades. Here we study the dynamics of networks evolving according to preferential attachment, known to approximate well the large-scale growth dynamics of a variety of real networks. We show that this dynamics is Hamiltonian, thus casting the study of complex networks dynamics to the powerful canonical formalism, in which the time evolution of a dynamical system is described by Hamilton's equations. We derive the explicit form of the Hamiltonian that governs network growth in preferential attachment. This Hamiltonian turns out to be nearly identical to graph energy in the configuration model, which shows that the ensemble of random graphs generated by preferential attachment is nearly identical to the ensemble of random graphs with scale-free degree d...

  7. Nano sponge Mn₂O ₃ as a new adsorbent for the preconcentration of Pd(II) and Rh(III) ions in sea water, wastewater, rock, street sediment and catalytic converter samples prior to FAAS determinations.

    Science.gov (United States)

    Yavuz, Emre; Tokalıoğlu, Serife; Sahan, Halil; Patat, Saban

    2014-10-01

    In this study, a nano sponge Mn2O3 adsorbent was synthesized and was used for the first time. Various parameters affecting the recovery values of Pd(II) and Rh(III) were examined. The tolerance limits (≥ 90 %) for both Pd(II) and Rh(III) ions were found to be 75,000 mg L(-1) Na(I), 75,000 mg L(-1) K(I), 50,000 mg L(-1) Mg(II) and 50,000 mg L(-1) Ca(II). A 30s contact time was enough for both adsorption and elution. A preconcentration factor of 100 was obtained by using 100mg of the nano sponge Mn2O3. The reusability of the adsorbent was 120 times. Adsorption capacities for Pd(II) and Rh(III) were found to be 42 and 6.2 mg g(-1), respectively. The detection limits were 1.0 µg L(-1) for Pd(II) and 0.37 µg L(-1) for Rh(III) and the relative standard deviations (RSD, %) were found to be ≤ 2.5%. The method was validated by analyzing the standard reference material, SRM 2556 (Used Auto Catalyst Pellets) and spiked real samples. The optimized method was applied for the preconcentration of Pd(II) and Rh(III) ions in water (sea water and wastewater), rock, street sediment and catalytic converter samples. PMID:25059126

  8. A Confirmatory Factor Analysis and Validation of the Vulnerable Attachment Style Questionnaire

    OpenAIRE

    Kupeli, N.; Norton, S; Chilcot, J.; Schmidt, U. H.; Campbell, I. C.; Troop, N. A.

    2015-01-01

    The Vulnerable Attachment Style Questionnaire (VASQ; Bifulco et al., Psychological Medicine, 33, 1099–1110, 2003) was developed to assess adult attachment as a vulnerability factor for developing depression and identified two subscales, insecure attachment and proximity-seeking. The present study sought to confirm and further validate the factor structure of the VASQ in a large community convenience sample. The VASQ was completed by a large sample of men and women (N = 1236) as part of an onl...

  9. Diameters in preferential attachment models

    OpenAIRE

    Dommers, S.; van der Hofstad, R.; Hooghiemstra, G.

    2010-01-01

    In this paper, we investigate the diameter in preferential attachment (PA-) models, thus quantifying the statement that these models are small worlds. The models studied here are such that edges are attached to older vertices proportional to the degree plus a constant, i.e., we consider affine PA-models. There is a substantial amount of literature proving that, quite generally, PA-graphs possess power-law degree sequences with a power-law exponent \\tau>2. We prove that the diameter of the PA-...

  10. Electron attachment to HCl clusters

    International Nuclear Information System (INIS)

    Negatively charged cluster ions of hydrogen chloride are formed by electron attachment to HCl clusters, which are produced in a seeded supersonic beam traversing a sustained gas discharge. Cluster ions of (HCl)n-, with n = 2, and tentatively with n = 3 and 4 are observed. Cluster ions like Cln-, Cln- (HCl)m, and with Ar attached to them are also seen. The relevance to radiation chemistry of HCl is briefly discussed. Atoms evaporating from the hot, thoriated tungsten filament of the glow discharge lead to clusters such as Thn- and its oxides. (orig.)

  11. Personal style of the therapist, attachment style and personality trait

    Directory of Open Access Journals (Sweden)

    Gabriel Genise

    2015-12-01

    Full Text Available The aim of this study is to analyze the relationship between the personal style of the therapist, attachment style and personality trait. It was used the personal style of the therapist questionnaire (PST – Q, the Argentinean attachment inventory and the big five inventory. The study sample consisted of 120 psychotherapists average age of 36.28 years (SD = 9.65, and the average years of experience was 7.90 years (SD = 8.04. The analysis of the results showed that there is a positive, significant and low intensity between the personality factor of openness to experience and personal style of involvement, a negative correlation, significant and of medium intensity between low extraversion factor correlation and mode not anxious romantic attachment and a significant positive relationship between the low–intensity factor neuroticism personality and how anxious romantic attachment

  12. Towards an integrative attachment-based model of relationship functioning.

    Science.gov (United States)

    Karantzas, Gery C; Feeney, Judith A; Goncalves, Celia V; McCabe, Marita P

    2014-08-01

    Based on attachment theory, this study developed a theory-based model of heterosexual relationship functioning that examined both proximal and distal factors and both actor and partner effects. A particular focus was on the underexplored issue of double-mediated effects between attachment orientation and relationship satisfaction. Data were collected from a community sample of 95 cohabiting and married couples with a mean age of 39.30 years. Participants completed measures of attachment, commitment, provision of partner support, trust, intimacy, destructive conflict management, and relationship satisfaction. The hypothesized model was largely supported. The association between attachment orientation and relationship satisfaction was mediated through a series of actor and partner variables. No gender differences were found across actor paths; however, differences were found in partner effects for men and women. The model has important implications for relationship researchers and practitioners. PMID:25040008

  13. Attachment Styles in a group of Patients with Terminal Renal Insufficiency

    Directory of Open Access Journals (Sweden)

    María Pía Santelices-Álvarez

    2009-06-01

    Full Text Available Several studies indicate that attachment in adults is feasible with modificationsthroughout life, especially in situations of change, as is the experienceof chronic disease. This study aims to describe the attachment patterns ofa group of patients with end-stage renal disease. We studied a group of 22patients with this disease requiring dialysis, compared with a group of 22adults for non-clinical sample (without disease, matching the participantsaccording to sex and age. The results showed differences significant patternsof attachment in both groups. Clinically healthy individuals tend to havepredominantly a secure attachment pattern, while those patients on dialysistend to have a preoccupied attachment pattern.

  14. II. Meşrutiyet Dönemi Mizah Basını ve İçeriklerinden Seçilmiş Örnekler Humor Press of the II. Constitutional Era and Selected Samples

    Directory of Open Access Journals (Sweden)

    Salih SEYHAN

    2013-03-01

    Full Text Available July 24, 1908, when Second Constitution was declared is animportant date for the history of Turkish Press as well as the history ofTurkish Politics, Turkish Literature History and the history of TurkishLaw. The Turkish press has entered a new era on that date, got rid of the bonds which were limiting the media and the newspapers wereprinted without the supervision of censorship board for the first time.By this freedom, numerous newspapers and magazines joined to pressand also humor magazines has taken place in that area. In this regard,the date July 24, 1908 represents a greater sense for Turkish humormedia. According to the information we have today, about a 30 yearperiod from the II. Abdulhamids’ ascending to the throne until thedeclaration of the II. Constitutional Monarchy although five or sixnewspapers were published but none of the newspapers or magazines ofhumor was allow to be published. This date has been declared as apress feast; in fact it is a lot more the feast of humor publishing.In this study, the humor newspapers named Boşboğaz ileGüllabi, Püsküllü Belâ, Lala, Malum and Kahya Kadın will be analyzedwhich were published after the period called pressexplosion consecutively the declaration of II. Constitutional Monarchy.During the analysis, firstly they will be presented by the information inthe samples and later the topics covered will be determined by thecontent analysis method. In addition, discourse analysis will be done forunderstanding the messages of the cartoons, news and articles. Theoverview of humor magazines to the declaration of Constitution and theway of its treatment to social and political issues of that period are thegoals of this study. II. Meşrutiyet’in ilan edildiği 24 Temmuz 1908 tarihi, TürkSiyasî Tarihi, Türk Edebiyat Tarihi, Türk Hukuk Tarihi gibi alanlar içinolduğu kadar Türk Basın Tarihi için de çok önemlidir. Türk basını butarihte yeni bir döneme girmiş ve kendisini s

  15. Methodologies for an improved prediction of the isotopic content in high burnup samples. Application to Vandellós-II reactor core

    International Nuclear Information System (INIS)

    Highlights: ► The isotopic prediction of high burnup samples has been addressed through the use of MONTEBURNS 2.0 and SCALE 6.0. ► It is implemented a power normalization capability in MONTEBURNS 2.0 so the user can specify precise experimental powers. ► MONTEBURNS 2.0 has been modified to handle the complete list of isotopes managed by ORIGEN 2.1. ► An external capability is developed to follow irradiations involving geometrical and positional changes automatically. - Abstract: Fuel cycles are designed with the aim of obtaining the highest amount of energy possible. Since higher burnup values are reached, it is necessary to improve our disposal designs, traditionally based on the conservative assumption that they contain fresh fuel. The criticality calculations involved must consider burnup by making the most of the experimental and computational capabilities developed, respectively, to measure and predict the isotopic content of the spent nuclear fuel. These high burnup scenarios encourage a review of the computational tools to find out possible weaknesses in the nuclear data libraries, in the methodologies applied and their applicability range. Experimental measurements of the spent nuclear fuel provide the perfect framework to benchmark the most well-known and established codes, both in the industry and academic research activity. For the present paper, SCALE 6.0/TRITON and MONTEBURNS 2.0 have been chosen to follow the isotopic content of four samples irradiated in the Spanish Vandellós-II pressurized water reactor up to burnup values ranging from 40 GWd/MTU to 75 GWd/MTU. By comparison with the experimental data reported for these samples, we can probe the applicability of these codes to deal with high burnup problems. We have developed new computational tools within MONTENBURNS 2.0. They make possible to handle an irradiation history that includes geometrical and positional changes of the samples within the reactor core. This paper describes the

  16. Structural Interfaces and Attachments in Biology

    CERN Document Server

    Birman, Victor; Genin, Guy

    2013-01-01

    Attachment of dissimilar materials in engineering and surgical practice is a perennial challenge. Bimaterial attachment sites are common locations for injury, repeated injury, and mechanical failure. Nature presents several highly effective solutions to the challenge of bimaterial attachment that differ from those found in engineering practice. Structural Interfaces and Attachments in Biology describes the attachment of dissimilar materials from multiple perspectives. The text will simultaneously elucidate natural bimaterial attachments and outline engineering principles underlying successful attachments to the communities of tissue engineers and surgeons. Included an in-depth analysis of the biology of attachments in the body and mechanisms by which robust attachments are formed, a review of current concepts of attaching dissimilar materials in surgical practice and a discussion of bioengineering approaches that are currently being developed. This book also: Provides the first comprehensive treatment of phys...

  17. Personality traits are related to intimate partner violence among securely attached individuals

    NARCIS (Netherlands)

    N.M.L. Buck; P.E.M. Leenaars; P.M.G. Emmelkamp; H.J.C. van Marle

    2014-01-01

    The general assumption has been that male batterers from clinical samples were mostly insecurely attached as compared to non-batterers. Recently, a large group was found (39.4 % of batterers in a clinical sample) whose main attachment style was secure. No previous studies have examined specifically

  18. Personality and attachment to romantic partners

    OpenAIRE

    Marušić, Iris; Kamenov, Željka; Jelić, Margareta

    2007-01-01

    Since Hazan and Shaver formulated their theory of adult romantic attachment in the late 1980's (Hazan & Shaver, 1987), attachment theory has become one of the principal theoretical frameworks for the study of intimate relationships in adulthood. It conceptualizes romantic love, or couple bonding, as an attachment process that reflects the same kinds of individual differences as infant-parent attachment. However, this idea is not a new one. Although attachment theory (Bowlby, 1969) was origina...

  19. Attachment patterns and separation anxiety symptom

    OpenAIRE

    Sakineh - Mofrad; Rohani - Abdullah; Ikechkwu - Uba

    2010-01-01

    Literature suggests that child attachment and anxiety symptoms are related. One purpose of the present study was to assess whether attachment patterns related differently to separation anxiety symptoms (fear of being alone, and fear of abandonment). Three attachment patterns assessed were secure, avoidant and ambivalent attachment. Findings indicated that ambivalent attachment was most consistently related with higher separation anxiety symptom. And also, different associations were found bet...

  20. PRECISION ATTACHMENTS; APPLICATIONS AND LIMITATIONS

    Directory of Open Access Journals (Sweden)

    Prabhakar

    2012-12-01

    Full Text Available ABSTRACT: A unique concern of a removable denture when compare d to others is retention. Retention is the ability of the prosthesis to resist the movement of denture away from the supporting tissues/teeth. The component of removable d enture which provides retention is called as direct retainer. 1,3,4 A direct retainer can be either an extracoronal or intracoronal retainer. Extracoronal direct retainer uses mechanical resistance to displa cement through components placed on external surface of abutment teeth. Intracoronal retainer is either cast or attached to tally within the restored natural contours of an abutment tooth. 1 One of the main drawbacks of extracoronal retainers used in partial dentures is visibility. Many patients find themselves in an aest hetically compromised state when these retainers are placed on teeth in visible area. Preci sion attachments provide solution for this problem. Also, precision attachments provide better ve rtical support and better stimulation to the underlying tissue through intermittent vertical massage. 1,9 Although the history of intracoronal retainers goes back to 5 th and 4 th centuries BC, technically more sound developments began in early 2 0 th century AD, with Dr. Herman E. S. Chayes formulating the principle of internal attachme nt in 1906. Since then precision attachments are playing an important role in removabl e and fixed partial denture, conventional and implant supported overdenture. 9

  1. MgII absorption systems with W_0 > 0.1 \\AA for a radio selected sample of 77 QSOs and their associated magnetic fields at high redshifts

    CERN Document Server

    Bernet, M L; Lilly, S J

    2010-01-01

    We present a catalogue of MgII absorption systems obtained from high resolution UVES/VLT data of 77 QSOs in the redshift range 0.6 0.1 \\AA. The statistical properties of our sample are found to be in agreement with those from previous work in the literature. However, we point out that the previously observed increase with redshift of dN/dz for weak absorbers, pertains exclusively to very weak absorbers with W_0 0.3 \\AA, the weaker systems do not contribute significantly to the observed Rotation Measure of the background quasars. This is possibly due to the higher impact parameters of the weak systems compared to strong ones, suggesting that the high column density magnetized material that is responsible for the Faraday Rotation is located within about 50 kpc of the galaxies. Finally, we show that this result also rules out the possibility that some unexpected secondary correlation between the quasar redshift and its intrinsic Rotation Measure is responsible for the associati on of high Rotation Measure and ...

  2. HI Content and Optical Properties of Field Galaxies from the ALFALFA Survey. II. Multivariate Analysis of a Galaxy Sample in Low Density Environments

    CERN Document Server

    Toribio, M C; Giovanelli, R; Haynes, M P; Martin, A

    2011-01-01

    This is the second paper of two reporting results from a study of the HI content and stellar properties of nearby galaxies detected by the Arecibo Legacy Fast ALFA blind 21-cm line survey and the Sloan Digital Sky Survey in a 2160 deg^2 region covered by both surveys. We apply strategies of multivariate data analysis to a complete HI flux-limited subset of 1624 objects extracted from the control sample of HI emitters assembled by Toribio et al. (2011a) in order to: i) investigate the correlation structure of the space defined by an extensive set of observables describing gas-rich systems; ii) identify the intrinsic parameters that best define their HI content; and iii) explore the scaling relations arising from the joint distributions of the quantities most strongly correlated with the HI mass. The principal component analysis performed over a set of five galaxy properties reveals that they are strongly interrelated, supporting previous claims that nearby HI emitters show a high degree of correlation. The bes...

  3. Search for cosmic ray origins by the study of supernova remnants associated with molecular clouds with HESS and test of HESS II sampling system

    International Nuclear Information System (INIS)

    The H.E.S.S. telescope (High energy Stereoscopic System), located in Namibia, is currently the most efficient for the observation of very high energy (VHE) gamma-ray sources. It is composed of 4 large diameter telescopes working in stereoscopic mode and allows an unequaled survey of the galactic plane at these extreme wavelengths. The H.E.S.S. experiment showed the presence of high energy particles up to 100 TeV within supernova remnant. This astrophysical objects are believed to be the main particle accelerator within the Galaxy. However, the particle nature remains unclear. This thesis presents a new observational approach in order to show hadronic particles acceleration through diffusive shock within supernova remnant. A search of supernova remnant associated with molecular cloud have been led within the HESS source catalog and the H.E.S.S. observations. An analysis of the new VHE gamma-ray source in Monoceros and its interpretation are presented. As well, the analysis and interpretation of new observations of the unidentified source HESS J1745-303 are presented. The multi-wavelength analysis of the new source HESS J1714-385, coincident with the supernova remnant CTB37A is presented. A contribution to the H.E.S.S. phase II building is also presented. This second phase consists in the building of a fifth telescope at the center of the existing system. The series tests of the new camera sampling system are reported. (author)

  4. Engineered microtopographies and surface chemistries direct cell attachment and function

    Science.gov (United States)

    Magin, Chelsea Marie

    Harrison, in 1914, first recognized that cells respond to physicochemical cues such as substratum topography when he observed that fibroblasts elongated while cultured on spider silk. Recently, techniques developed in the micro-electronics industry have been used to create molds for producing microscaled topographies with various shapes and spatial arrangements. Although these patterning techniques are well-established, very little is known about the mechanisms underlying cell sensing and response to microtopographies. In this work cellular micro-environments with varying surface topographies and chemistries were evaluated with marine organisms and mammalian cells to investigate cellular sensing and response. Biofouling---the accumulation of micro-organisms, plants, and animals on submerged surfaces---is an environmental and economic concern. Engineered topographies, replicated in polydimethylsiloxane elastomer (PDMSe) and functionalized poly(ethylene glycol)-dimethacrylate (PEGDMA) hydrogels, were evaluated for inhibition of marine fouling organism attachment. Microtopographies replicated in PDMSe inhibited attachment of the marine bacterium, Cobetia marina up to 99% versus smooth. The average normalized attachment densities of cells of C. marina and zoospores of the green algae Ulva on PDMSe topographies scaled inversely with the Engineered Roughness Index (ERIII), a representation of surface energy. Attachment densities of Ulva from four assays and C. marina from two growth phases to PDMSe surfaces scaled inversely with one equation: ERI II multiplied by the Reynolds number of the organism (Re) (R 2 = 0.77). The same microtopographies created in PDMSe reduced the initial attachment density and attachment strength of cells of the diatoms Navicula incerta and Seminavis robusta compared to smooth PDMSe. The average normalized attachment density of Navicula after exposure to shear stress (48 Pa) was correlated with the contact area between the diatom and a

  5. Criterion Validity, Severity Cut Scores, and Test-Retest Reliability of the Beck Depression Inventory-II in a University Counseling Center Sample

    Science.gov (United States)

    Sprinkle, Stephen D.; Lurie, Daphne; Insko, Stephanie L.; Atkinson, George; Jones, George L.; Logan, Arthur R.; Bissada, Nancy N.

    2002-01-01

    The criterion validity of the Beck Depression Inventory-II (BDI-II; A. T. Beck, R. A. Steer, & G. K. Brown, 1996) was investigated by pairing blind BDI-II administrations with the major depressive episode portion of the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I; M. B. First, R. L. Spitzer, M. Gibbon, & J. B. W. Williams,…

  6. Exposure of UK industrial plumbers to asbestos, Part II: Awareness and responses of plumbers to working with asbestos during a survey in parallel with personal sampling.

    Science.gov (United States)

    Bard, Delphine; Burdett, Garry

    2007-03-01

    Throughout the European Union, millions tonnes of asbestos were used in the manufacture of products for building and for industrial installations. Today, in the UK, it is estimated that over half a million non-domestic premises alone have asbestos-containing materials in them and it is recognized that those working in building maintenance trades continue to be at significant risk. In part II, the awareness of UK plumbers to when they are working with asbestos was investigated and compared with the monitored levels reported in part I. The plumbers were issued by post with passive samplers, activity logs to monitor a working week and a questionnaire. The activity logs were used to assess whether maintenance workers were knowingly or unknowingly exposed to airborne asbestos fibres during a course of a working week. The questionnaire was designed to gather information on their: age, employment status, current and past perception of the frequency which they work with asbestos and knowledge of the precautions that should be taken to limit exposure and risk. Approximately 20% of workers reported on the sample log that they had worked with asbestos. There was a high correlation (93%) between the sampling log replies that they were knowingly working with asbestos and measured asbestos on the passive sampler. However, some 60% of the samples had >5 microm long asbestos structures found by transmission electron microscopy (TEM) analysis suggesting that the plumbers were aware of about only one-third of their contacts with asbestos materials throughout the week. This increased to just over one half of the plumbers being aware of their contact based on the results for phase contrast microscopy (PCM) countable asbestos fibres. The results from the questionnaire found that over half of the plumbers replying thought that they disturb asbestos only once a year and 90% of them thought they would work with asbestos for<10 h year-1. Their expectations and awareness of work with

  7. The influence of psychoeducation on regulating biological rhythm in a sample of patients with bipolar II disorder: a randomized clinical trial

    Directory of Open Access Journals (Sweden)

    Faria AD

    2014-06-01

    Full Text Available Augusto Duarte Faria,1 Luciano Dias de Mattos Souza,2 Taiane de Azevedo Cardoso,2 Karen Amaral Tavares Pinheiro,2 Ricardo Tavares Pinheiro,2 Ricardo Azevedo da Silva,2 Karen Jansen21Department of Clinical and Health Psychology, Universidade Federal do Rio Grande – FURG, Rio Grande, RS, Brazil; 2Health and Behavior Postgraduate Program, Universidade Católica de Pelotas – UCPEL, Pelotas, RS, BrazilIntroduction: Changes in biological rhythm are among the various characteristics of bipolar disorder, and have long been associated with the functional impairment of the disease. There are only a few viable options of psychosocial interventions that deal with this specific topic; one of them is psychoeducation, a model that, although it has been used by practitioners for some time, only recently have studies shown its efficacy in clinical practice.Aim: To assess if patients undergoing psychosocial intervention in addition to a pharmacological treatment have better regulation of their biological rhythm than those only using medication.Method: This study is a randomized clinical trial that compares a standard medication intervention to an intervention combined with drugs and psychoeducation. The evaluation of the biological rhythm was made using the Biological Rhythm Interview of Assessment in Neuropsychiatry, an 18-item scale divided in four areas (sleep, activity, social rhythm, and eating pattern. The combined intervention consisted of medication and a short-term psychoeducation model summarized in a protocol of six individual sessions of 1 hour each.Results: The sample consisted of 61 patients with bipolar II disorder, but during the study, there were 14 losses to follow-up. Therefore, the final sample consisted of 45 individuals (26 for standard intervention and 19 for combined. The results showed that, in this sample and time period evaluated, the combined treatment of medication and psychoeducation had no statistically significant impact on the

  8. The Turkish version of Maternal Attachment Inventory

    Directory of Open Access Journals (Sweden)

    Oya Kavlak

    2009-01-01

    Full Text Available Objective: The research has been designed as methodological with purpose of the validity and the reliability of the Turkish language version of Maternal Attachment Inventory on mothers within one and four months postpartum. Method: This study was carried out with mothers registered at 19 Health Clinics and three Maternal-Child Health and Family Planning Clinics in which connected to Bornova Health Presidency in Izmir. The sample of research has been composed three clinics in which determined with the purposive sampling technique. First stage, the research was studied on 165 mothers when their babies were approximately 30-40 days old in these registered clinics.At the second stage of research has been interviewed again with 78 mothers when their babies were approximately 90-105 days old.Results: It is determined that experts consensuses about content of items as a result of analysis (Kendall’s W=0.274, p=0.001

  9. An Investigation into Associations with Attachment, Companion Pet Attachment, Empathy, and Prosocial Behaviors in 18-20 Year Old College Students: A Mixed Methods Study

    Science.gov (United States)

    Anderson, Christian

    2010-01-01

    This study examines empathy, parental attachment, companion pet attachment and social behaviors in a sample of 120 students between the ages of 18-20 enrolled at Front Range Community College in Westminster CO during the fall semester 2008. The study is based on the research questions posed by Thompson and Gullone (2008) but pays particular…

  10. 32 CFR Attachment 5 to Part 855 - Sample Temporary Agreement

    Science.gov (United States)

    2010-07-01

    ... Recreation Airlines Economy Airlines PacAir Transport Schedules The Bunker International Airport (BIA... change flight plans when required to preclude interference with military activities or operations... Manager, in advance, of armed security or law enforcement officers arriving or departing on a flight....

  11. Development and evaluation of a reverse transcription-insulated isothermal polymerase chain reaction (RT-iiPCR) assay for detection of equine arteritis virus in equine semen and tissue samples using the POCKIT™ system.

    Science.gov (United States)

    Carossino, Mariano; Lee, Pei-Yu A; Nam, Bora; Skillman, Ashley; Shuck, Kathleen M; Timoney, Peter J; Tsai, Yun-Long; Ma, Li-Juan; Chang, Hsiao-Fen G; Wang, Hwa-Tang T; Balasuriya, Udeni B R

    2016-08-01

    Equine arteritis virus (EAV) is the causative agent of equine viral arteritis (EVA), a respiratory and reproductive disease of horses. Most importantly, EAV induces abortion in pregnant mares and can establish persistent infection in up to 10-70% of the infected stallions, which will continue to shed the virus in their semen. The objective of this study was to develop and evaluate a reverse transcription insulated isothermal polymerase chain reaction (RT-iiPCR) for the detection of EAV in semen and tissue samples. The newly developed assay had a limit of detection of 10 RNA copies and a 10-fold higher sensitivity than a previously described real-time RT-PCR (RT-qPCR). Evaluation of 125 semen samples revealed a sensitivity and specificity of 98.46% and 100.00%, respectively for the RT-qPCR assay, and 100.00% and 98.33%, respectively for the RT-iiPCR assay. Both assays had the same accuracy (99.2%, k=0.98) compared to virus isolation. Corresponding values derived from testing various tissue samples (n=122) collected from aborted fetuses, foals, and EAV carrier stallions are as follows: relative sensitivity, specificity, and accuracy of 88.14%, 96.83%, and 92.62% (k=0.85), respectively for the RT-qPCR assay, and 98.31%, 92.06%, and 95.08% (k=0.90), respectively for the RT-iiPCR assay. These results indicate that RT-iiPCR is a sensitive, specific, and a robust test enabling detection of EAV in semen and tissue samples with very considerable accuracy. Even though the RT-qPCR assay showed a sensitivity and specificity equal to virus isolation for semen samples, its diagnostic performance was somewhat limited for tissue samples. Thus, this new RT-iiPCR could be considered as an alternative tool in the implementation of EAV control and prevention strategies. PMID:27036504

  12. Prediction of Addiction Potential in Youth According to Attachment Styles

    Directory of Open Access Journals (Sweden)

    Mahdieh Adroom

    2014-05-01

    Full Text Available Background: The present study aim is to predict the psychological inclination to drug use in youths by studying their attachment styles. Materials and Methods: The research sample includes male and female students of Zahedan Medical Science University with the average age of 19-24. The proportional cluster random sampling was used for selection of participant. The hypotheses were analyzed, using Pearson correlation method, regression analysis, one way variance analysis and t-test for two independent groups4T. Results: The results indicated positive relationships among addiction aptitude and insecure-avoidant attachment style and negative relationship between addiction aptitude and secure attachment style4T. Conclusion: It is necessary to focus training intervention and prevention on all students4T.

  13. Radon decay products attached to clothes in a nuclear laboratory

    International Nuclear Information System (INIS)

    A whole body counter determined the presence of radioactivities up to 21.8 kBq for 214Bi and up to 18.7 kBq for 214Pb attached to clothes of workers in a Nuclear Research Laboratory. A radon survey reveals that 80% of the monitoring areas have radon concentration values lower than 500 Bq m-3, while 10% of the sampling points with values bigger than 1 kBq m-3 correspond to the workers mentioned above. By exposing samples of 0.04 m2 clothes in a radon chamber, it was observed that radon decay products 214Bi and 214Pb were attached to them with an activity of 315-618 Bq per each kBq m-3 of Rn concentration additionally, fibres characterised with a low electrostatic build up showed the lower attachment

  14. The influence of leadership style on subordinates' attachment to the leader.

    Science.gov (United States)

    Molero, Fernando; Moriano, Juan A; Shaver, Phillip R

    2013-01-01

    The aim of this research is to explore the extent to which employees establish attachment bonds with their leaders and the effects these bonds have on organizational outcomes. A sample of 225 participants reported on their supervisor's leadership style (transformational, transactional, or passive-avoidant), their attachment bonds to this supervisor (anxious or avoidant), and four organizational variables (subordinate's satisfaction, identification with the organization, extra effort, and perceived leadership effectiveness). Results, analyzed using a Partial Least Squares (PLS) approach, indicated that (a) transformational leadership was negatively associated with employees' insecure (anxious or avoidant) attachment to their leader; (b) passive/avoidant leadership was positively associated with subordinates' insecure attachment to their leader; (c) transactional leadership was positively associated with employee's anxious attachment but not with their avoidant attachment; (d) avoidant, but not anxious, attachment to the leader was negatively associated with employee satisfaction, perceived leader effectiveness, employee's extra effort, and organizational identification. PMID:24230925

  15. Novo método espectrofotométrico para determinação de Hg (II em amostras de peixe New spectrophotometric method for the determination of Hg (II in fish samples

    Directory of Open Access Journals (Sweden)

    Lorena Carvalho Martiniano

    2008-06-01

    Full Text Available Um novo método espectrofotométrico simples, sensível e com boa seletividade é apresentado para a determinação rápida de mercúrio (II em nível de traços com 2-mercapto-5-metilbenzilimidazol (MMBI como um novo reagente espectrofotométrico (lambda max = 320 nm, em um meio aquoso ligeiramente alcalino (tampão Britton-Robinson (BR 0,04 M, pH 8,0. A reação é instantânea e a absorbância permanece estável por mais de 24 horas. O coeficiente de absorção molar encontrado foi de 2,71 x 10(4 L mol-1 cm-1. A composição estequiométrica do complexo é de 1:1 (Hg:MMBI. Considerável excesso dos íons cobre, zinco, chumbo e cádmio não interfere na determinação. O método desenvolvido permitiu a determinação de mercúrio na faixa de 2 x 10-6 a 4 x 10-5 mol.L-1 com boa precisão e exatidão, e o limite de detecção para Hg foi de 9,9 x 10-7 mol.L-1. O método foi aplicado com sucesso a amostras de peixe e os resultados foram avaliados com o clássico método de espectrometria de absorção atômica (EAA. Os desvios padrão relativos para as amostras analisadas foram de 7,2 e 33% (n = 5, enquanto os erros foram de 1,63 e 11,6. O método mostrou-se sensível, seletivo e foi aplicado para a determinação de mercúrio em amostras de peixe com resultados satisfatórios.A simple, sensitive and selective spectrophotmetric method is presented for the rapid determination of mercury (II at trace levels using 2-mercapto-5-methylbenzimidazole (MMBI as a new spectrophotometric reagent (lambdamax = 320 nm in a slightly basic (0.04 M Britton-Robinson (BR buffer, pH 8.0 aqueous solution. The reaction is instantaneous and the absorbance remains stable for over 24 hours. The average molar absorption coefficient was found to be 2.71 x 10(4 L mol-1 cm-1. The stoichiometric composition of the chelate is 1:1 (Hg:MMBI. Considerable excesses of copper, zinc, lead and cadmium do not interfere in the determination. The method developed allowed the

  16. Flame atomic absorption spectrometric determination of trace amounts of Pb(II) and Cr(III) in biological, food and environmental samples after preconcentration by modified nano-alumina

    International Nuclear Information System (INIS)

    A new solid-phase extraction sorbent was used for the preconcentration of Pb(II) and Cr(III) ions prior to their determination by flame atomic absorption spectrometry. It was prepared by immobilization of 2,4-dinitrophenylhydrazine on nano-alumina coated with sodium dodecyl sulfate. The sorbent was characterized by scanning electron microscopy, N2 adsorption and Fourier transform infrared spectrometry, and used for preconcentration and separation of Pb(II) and Cr(III) from aqueous solutions. The ions on the sorbent were eluted with a mixture of nitric acid and methanol. The effects of sample pH, flow rates of samples and eluent, type of eluent, breakthrough volume and potentially interfering ions were studied. Linearity is maintained between 1.2 and 350 μg L-1 of Pb(II), and between 2.4 and 520 μg L-1 of Cr(III) for an 800-mL sample. The detection limit (3 s, N=10) for Pb(II) and Cr(III) ions is 0.43 and 0.55 μg L-1, respectively, and the maximum preconcentration factor is 267. The method was successfully applied to the evaluation of these trace and toxic metals in various water, food, industrial effluent and urine samples. (author)

  17. EMISSION-LINE GALAXIES FROM THE HUBBLE SPACE TELESCOPE PROBING EVOLUTION AND REIONIZATION SPECTROSCOPICALLY (PEARS) GRISM SURVEY. II. THE COMPLETE SAMPLE

    Energy Technology Data Exchange (ETDEWEB)

    Pirzkal, Nor; Rothberg, Barry; Ly, Chun; Grogin, Norman A.; Dahlen, Tomas; Noeske, Kai G.; Bellini, Andrea [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21210 (United States); Malhotra, Sangeeta; Rhoads, James E.; Cohen, Seth H.; Mechtley, Matthew; Windhorst, Rogier A. [School of Earth And Space Exploration, Arizona State University, Tempe, AZ 85287-1404 (United States); Meurer, Gerhardt R. [International Centre for Radio Astronomy Research, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia); Walsh, Jeremy R. [European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching (Germany); Hathi, Nimish P. [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Holwerda, Benne W. [ESA-ESTEC, Keplerlaan 1, 2200 AG, Noordwijk (Netherlands); Straughn, Amber N. [Astrophysics Science Division, Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States)

    2013-07-20

    We present a full analysis of the Probing Evolution And Reionization Spectroscopically (PEARS) slitess grism spectroscopic data obtained with the Advanced Camera for Surveys on board Hubble Space Telescope. PEARS covers fields within both the Great Observatories Origins Deep Survey (GOODS) North and South fields, making it ideal as a random survey of galaxies, as well as the availability of a wide variety of ancillary observations complemented by the spectroscopic results. Using the PEARS data, we are able to identify star-forming galaxies (SFGs) within the redshift volume 0 < z < 1.5. Star-forming regions in the PEARS survey are pinpointed independently of the host galaxy. This method allows us to detect the presence of multiple emission-line regions (ELRs) within a single galaxy. We identified a total of 1162 H{alpha}, [O III], and/or [O II] emission lines in the PEARS sample of 906 galaxies to a limiting flux of {approx}10{sup -18} erg s{sup -1} cm{sup -2}. The ELRs have also been compared to the properties of the host galaxy, including morphology, luminosity, and mass. From this analysis, we find three key results: (1) the computed line luminosities show evidence of a flattening in the luminosity function with increasing redshift; (2) the star-forming systems show evidence of complex morphologies with star formation occurring predominantly within one effective (half-light) radius. However, the morphologies show no correlation with host stellar mass. (3) Also, the number density of SFGs with M{sub *} {>=} 10{sup 9} M{sub Sun} decreases by an order of magnitude at z {<=} 0.5 relative to the number at 0.5 < z < 0.9, supporting the argument of galaxy downsizing.

  18. Image-derived and arterial blood sampled input functions for quantitative PET imaging of the angiotensin II subtype 1 receptor in the kidney

    International Nuclear Information System (INIS)

    Purpose: The radioligand 11C-KR31173 has been introduced for positron emission tomography (PET) imaging of the angiotensin II subtype 1 receptor in the kidney in vivo. To study the biokinetics of 11C-KR31173 with a compartmental model, the input function is needed. Collection and analysis of arterial blood samples are the established approach to obtain the input function but they are not feasible in patients with renal diseases. The goal of this study was to develop a quantitative technique that can provide an accurate image-derived input function (ID-IF) to replace the conventional invasive arterial sampling and test the method in pigs with the goal of translation into human studies. Methods: The experimental animals were injected with [11C]KR31173 and scanned up to 90 min with dynamic PET. Arterial blood samples were collected for the artery derived input function (AD-IF) and used as a gold standard for ID-IF. Before PET, magnetic resonance angiography of the kidneys was obtained to provide the anatomical information required for derivation of the recovery coefficients in the abdominal aorta, a requirement for partial volume correction of the ID-IF. Different image reconstruction methods, filtered back projection (FBP) and ordered subset expectation maximization (OS-EM), were investigated for the best trade-off between bias and variance of the ID-IF. The effects of kidney uptakes on the quantitative accuracy of ID-IF were also studied. Biological variables such as red blood cell binding and radioligand metabolism were also taken into consideration. A single blood sample was used for calibration in the later phase of the input function. Results: In the first 2 min after injection, the OS-EM based ID-IF was found to be biased, and the bias was found to be induced by the kidney uptake. No such bias was found with the FBP based image reconstruction method. However, the OS-EM based image reconstruction was found to reduce variance in the subsequent phase of the ID

  19. Image-derived and arterial blood sampled input functions for quantitative PET imaging of the angiotensin II subtype 1 receptor in the kidney

    Energy Technology Data Exchange (ETDEWEB)

    Feng, Tao; Tsui, Benjamin M. W.; Li, Xin; Vranesic, Melin; Lodge, Martin A.; Gulaldi, Nedim C. M.; Szabo, Zsolt, E-mail: zszabo@jhmi.edu [Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins School of Medicine, Baltimore, Maryland 21287 (United States)

    2015-11-15

    Purpose: The radioligand {sup 11}C-KR31173 has been introduced for positron emission tomography (PET) imaging of the angiotensin II subtype 1 receptor in the kidney in vivo. To study the biokinetics of {sup 11}C-KR31173 with a compartmental model, the input function is needed. Collection and analysis of arterial blood samples are the established approach to obtain the input function but they are not feasible in patients with renal diseases. The goal of this study was to develop a quantitative technique that can provide an accurate image-derived input function (ID-IF) to replace the conventional invasive arterial sampling and test the method in pigs with the goal of translation into human studies. Methods: The experimental animals were injected with [{sup 11}C]KR31173 and scanned up to 90 min with dynamic PET. Arterial blood samples were collected for the artery derived input function (AD-IF) and used as a gold standard for ID-IF. Before PET, magnetic resonance angiography of the kidneys was obtained to provide the anatomical information required for derivation of the recovery coefficients in the abdominal aorta, a requirement for partial volume correction of the ID-IF. Different image reconstruction methods, filtered back projection (FBP) and ordered subset expectation maximization (OS-EM), were investigated for the best trade-off between bias and variance of the ID-IF. The effects of kidney uptakes on the quantitative accuracy of ID-IF were also studied. Biological variables such as red blood cell binding and radioligand metabolism were also taken into consideration. A single blood sample was used for calibration in the later phase of the input function. Results: In the first 2 min after injection, the OS-EM based ID-IF was found to be biased, and the bias was found to be induced by the kidney uptake. No such bias was found with the FBP based image reconstruction method. However, the OS-EM based image reconstruction was found to reduce variance in the subsequent

  20. Eating disorders in adolescence: attachment issues from a developmental perspective

    Directory of Open Access Journals (Sweden)

    Manuela eGander

    2015-08-01

    Full Text Available In the present article we review findings from an emerging body of research on attachment issues in adolescents with eating disorders from a developmental perspective. First, we will outline the crucial developmental changes in the attachment system and discuss how they might be related to the early onset of the disease. Then we will report on the major results from attachment studies using self-report and narrative instruments in that age group. Studies with a developmental approach on attachment will be analyzed in more detail. The high incidence of the unresolved attachment pattern in eating disorder samples is striking, especially for patients with anorexia nervosa. Interestingly, this predominance of the unresolved category was also found in their mothers. To date, these transgenerational aspects are still poorly understood and therefore represent an exciting research frontier. Future studies that include larger adolescent samples and provide a more detailed description including symptom severity and comorbidity would contribute to a better understanding of this complex and painful condition.

  1. Eating disorders in adolescence: attachment issues from a developmental perspective

    Science.gov (United States)

    Gander, Manuela; Sevecke, Kathrin; Buchheim, Anna

    2015-01-01

    In the present article we review findings from an emerging body of research on attachment issues in adolescents with eating disorders from a developmental perspective. Articles for inclusion in this review were identified from PsychINFO (1966–2013), Sciencedirect (1970–2013), Psychindex (1980–2013), and Pubmed (1980–2013). First, we will outline the crucial developmental changes in the attachment system and discuss how they might be related to the early onset of the disease. Then we will report on the major results from attachment studies using self-report and narrative instruments in that age group. Studies with a developmental approach on attachment will be analyzed in more detail. The high incidence of the unresolved attachment pattern in eating disorder samples is striking, especially for patients with anorexia nervosa. Interestingly, this predominance of the unresolved category was also found in their mothers. To date, these transgenerational aspects are still poorly understood and therefore represent an exciting research frontier. Future studies that include larger adolescent samples and provide a more detailed description including symptom severity and comorbidity would contribute to a better understanding of this complex and painful condition. PMID:26321974

  2. Infant Negative Emotionality and Attachment: Implications for Preschool Intelligence

    Science.gov (United States)

    Karrass, Jan; Braungart-Rieker, Julia M.

    2004-01-01

    This longitudinal study examined the extent to which dimensions of infant negative temperament in the first year predicted IQ at age 3, and whether these associations depended on the quality of the infant-mother attachment relationship. In a sample of 63 infant-mother dyads, mothers completed Rothbart's (1981) IBQ when infants were 4 and 12…

  3. A simple method to assess bacterial attachment to surfaces

    Digital Repository Service at National Institute of Oceanography (India)

    Sonak, S.; Bhosle, N.B.

    , sensitive, less time consuming and therefore many samples can be analysed in a short period of time. When the calibrated method was employed to assess the attachment of Vibrio sp to polystyrene, stainless steel and copper, it give a fairly reliable estimate...

  4. Children's Representations of Attachment Relationships in Family Drawings.

    Science.gov (United States)

    Fury, Gail; Carlson, Elizabeth A.; Sroufe, L. Alan

    1997-01-01

    Investigated the representational model of self and attachment figures in family drawings of 8- to 9-year-olds in a high-risk, racially mixed sample. Found that specific signs and global rating scales were related to early relationship history. Even after contemporary influences of child intelligence, stress, and emotional functioning were…

  5. The Relation of Attachment Security to Adolescents’ Paternal and Peer Relationships, Depression, and Externalizing Behavior

    OpenAIRE

    Allen, Joseph P.; Porter, Maryfrances; McFarland, Christy; McELHANEY, KATHLEEN BOYKIN; Marsh, Penny

    2007-01-01

    The relation of attachment security to multiple domains of psychosocial functioning was examined in a community sample of 167 early adolescents. Security of attachment organization, assessed using the Adult Attachment Interview, was linked to success in establishing autonomy while maintaining a sense of relatedness both with fathers and with peers, even after accounting for predictions from qualities of the mother-teen relationship. Growth curve analyses revealed links of insecurity to increa...

  6. Machiavellianism and Adult Attachment in General Interpersonal Relationships and Close Relationships

    OpenAIRE

    Tamás Ináncsi; András Láng; Tamás Bereczkei

    2015-01-01

    Up to the present, the relationship between Machiavellianism and adult attachment has remained a question to be answered in the psychological literature. That is why this study focused on the relationship between Machiavellianism and attachment towards significant others in general interpersonal relationships and in intimate-close relationships. Two attachment tests (Relationship Questionnaire and long-form of Experiences in Close Relationship) and the Mach-IV test were conducted on a sample ...

  7. Attachment as a Moderator Between Intimate Partner Violence and PTSD Symptoms

    OpenAIRE

    Scott, Shelby; Babcock, Julia C.

    2009-01-01

    Post-traumatic stress disorder (PTSD) symptoms have been linked to traumatic experiences, including intimate partner violence. However, not all battered women develop PTSD symptoms. The current study tests attachment style as a moderator in the abuse–trauma link among a community sample women in violent and non-violent relationships. Both attachment anxiety and dependency were found to moderate the relation between intimate partner violence and PTSD symptoms. However, attachment closeness did...

  8. Psychological characteristics of future helping professionals: Empathy and attachment of psychology students

    OpenAIRE

    Dimitrijević Aleksandar; Hanak Nataša; Milojević Sonja

    2011-01-01

    In this study we investigated whether psychology students differ than students who have chosen non-helping professions in psychological features important for helping activities: attachment and empathy. The sample consisted of psychology students from Belgrade and Novi Sad (N=452) and students from several Belgrade University faculties for non-helping professions. The revised version of Attachment Questionnaire was used for assessment of attachment, while empathy was assessed by Empathy...

  9. Psychometric Characteristics of the Persian (Farsi) Version of Attachment Style Questionnaire

    OpenAIRE

    Ali Firoozabadi; Zabihollah Abedi; Roqayeh Aliyari; Behzad Zolfaghari; Ahmad Ghanizadeh

    2014-01-01

    Background: Attachment relationship provides a secure base for the infants from which to explore the environment and a safe haven to return to in times of danger. Attachment style shapes the behavior of individuals in adulthood. There are many different measures of attachment and a lot of controversy about what they measure and how they relate to each other. Hence, we tried to evaluate the psychometric properties of one of such questionnaires on a sample of the Iranian population. Methods...

  10. Attaching Chuck Keys to Machine Tools

    Science.gov (United States)

    Richardson, V.

    1984-01-01

    Chuck keys attached to portable machine tools by retracting lanyards. Lanyard held taut by recoil caddy attached to tool base. Chuck key available for use when needed and safely secured during operation of tool.

  11. Intergenerational Transmission of Attachment in Abused and Neglected Mothers: The Role of Trauma-Specific Reflective Functioning

    OpenAIRE

    Berthelot, N.; Ensink, K.; Bernazzani, O.; Normandin, L.; Luyten, P.; Fonagy, P.

    2015-01-01

    There are still important gaps in our knowledge regarding the intergenerational transmission of attachment from mother to child, especially in mothers with childhood histories of abuse and neglect (CA&N). This study examined the contributions of reflective function concerning general attachment relationships, and specifically concerning trauma, as well as those of maternal attachment states of mind to the prediction of infant attachment disorganization in a sample of mothers with CA&N and the...

  12. Antecedents of maternal parenting stress: the role of attachment style, prenatal attachment, and dyadic adjustment in first-time mothers.

    Science.gov (United States)

    Mazzeschi, Claudia; Pazzagli, Chiara; Radi, Giulia; Raspa, Veronica; Buratta, Livia

    2015-01-01

    The transition to parenthood is widely considered a period of increased vulnerability often accompanied by stress. Abidin conceived parenting stress as referring to specific difficulties in adjusting to the parenting role. Most studies of psychological distress arising from the demands of parenting have investigated the impact of stress on the development of dysfunctional parent-child relationships and on adult and child psychopathology. Studies have largely focused on mothers' postnatal experience; less attention has been devoted to maternal prenatal characteristics associated with subsequent parental stress and studies of maternal prenatal predictors are few. Furthermore, no studies have examined that association exclusively with samples of first-time mothers. With an observational prospective study design with two time periods, the aim of this study was to investigate the role of mothers' attachment style, maternal prenatal attachment to the fetus and dyadic adjustment during pregnancy (7th months of gestation) and their potential unique contribution to parenting stress 3 months after childbirth in a sample of nulliparous women. Results showed significant correlations between antenatal measures. Maternal attachment style (especially relationship anxiety) was negatively correlated with prenatal attachment and with dyadic adjustment; positive correlations resulted between prenatal attachment and dyadic adjustment. Each of the investigated variables was also good predictor of parenting stress 3 months after childbirth. Findings suggested how these dimensions could be considered as risk factors in the transition to motherhood and in the very beginning of the emergence of the caregiving system, especially with first-time mothers. PMID:26441808

  13. Antecedents of maternal parenting stress: the role of attachment style, prenatal attachment and dyadic adjustment in first-time mothers

    Directory of Open Access Journals (Sweden)

    Claudia eMazzeschi

    2015-09-01

    Full Text Available The transition to parenthood is widely considered a period of increased vulnerability often accompanied by stress. Abidin conceived parenting stress as referring to specific difficulties in adjusting to the parenting role. Most studies of psychological distress arising from the demands of parenting have investigated the impact of stress on the development of dysfunctional parent-child relationships and on adult and child psychopathology. Studies have largely focused on mothers’ postnatal experience; less attention has been devoted to maternal prenatal characteristics associated with the subsequent parental stress and studies of maternal prenatal predictors are few. Furthermore, no studies have examined that association exclusively with samples of first-time mothers. With an observational prospective study design with two time periods, the aim of this study was to investigate the role of mothers’ attachment style, maternal prenatal attachment to the fetus and dyadic adjustment during pregnancy (7th month of gestation and their potential unique contribution to parenting stress three months after childbirth in a sample of nulliparous women. Results showed significant correlations between antenatal measures. Maternal attachment style (especially relationship anxiety was negatively correlated with prenatal attachment and with dyadic adjustment; positive correlations resulted between prenatal attachment and dyadic adjustment. Each of the investigated variables was also good predictor of parenting stress three months after childbirth. Findings suggested how these dimensions could be considered as risk factors in the transition to motherhood and in the very beginning of the emergence of the caregiving system, especially with first-time mothers

  14. Attachment Theory, Foster Parents and Diversity Tolerance

    OpenAIRE

    Kenny, Michael; Fleming, Ted

    2009-01-01

    relevance to attachment within the biological and foster family. Yet every foster parent has a childhood attachment history that influences their interpersonal relationships in adulthood. The primary concern of the foster parent and their supports is with the foster child. But as a result the foster parent may distract or block reflection on their own attachment history. This presentation will focus on attachment theory and the adult, with particular reference to the foster parent. The pre...

  15. Development of foster mother-child attachment

    OpenAIRE

    Korhonen, J

    2014-01-01

    The impact of early attachment relationships and child-adult attachment relationships to children’s social and emotional development has been recognised for a long time. Since the pioneering attachment theories of John Bowlby and Mary Ainsworth highlighting the importance of secure child-adult attachments, many other theories from various perspectives have risen to fill in the gaps. These theories are examined with the framework of foster care in mind. In Finland, the primary solution fo...

  16. Oxytocin enhances the experience of attachment security

    OpenAIRE

    Buchheim, Anna; Heinrichs, Markus; George, Carol; Pokorny, Dan; Koops, Eva; Henningsen, Peter; O’Connor, Mary-Frances; Gundel, Harald

    2009-01-01

    Repeated interactions between infant and caregiver result in either secure or insecure relationship attachment patterns, and insecure attachment may affect individual emotion-regulation and health. Given that oxytocin enhances social approach behavior in animals and humans, we hypothesized that oxytocin might also promote the experience of attachment security in humans. Within a 3-week interval 26 healthy male students classified with an insecure attachment pattern were invited twice to an ex...

  17. Detection of Human Papillomavirus DNA in Cervical Samples: Analysis of the New PGMY-PCR Compared To the Hybrid Capture II and MY-PCR Assays and a Two-Step Nested PCR Assay

    OpenAIRE

    Giovannelli, Lucia; Lama, Anna; Capra, Giuseppina; Giordano, Viviana; Aricò, Pietro; Ammatuna, Pietro

    2004-01-01

    The PGMY-PCR for human papillomavirus (HPV) was evaluated, in parallel with nested PCR (nPCR), in samples with noted Hybrid Capture II (HCII) and MY-PCR results. PGMY-PCR detected HPV DNA in 2.5% of HCII-negative-MY-PCR-negative samples and in 71.7% of HCII-positive-MY-PCR-negative samples; also, it detected the MY-PCR-negative-nPCR-negative types HPV-42, HPV-44, HPV-51, HPV-87, and HPV-89.

  18. Foster children's attachment behavior and representation: Influence of children's pre-placement experiences and foster caregiver's sensitivity.

    Science.gov (United States)

    Bovenschen, Ina; Lang, Katrin; Zimmermann, Janin; Förthner, Judith; Nowacki, Katja; Roland, Inga; Spangler, Gottfried

    2016-01-01

    Although the majority of foster children have been exposed to early adversity in their biological families and have experienced one or more disruptions of attachment relationships, most studies surprisingly found foster children to be as securely attached as children in low-risk samples. However, attention has been paid almost exclusively to attachment formation in young children up to two years of age, and the majority of studies solely investigated attachment behavior whereas few is known about foster children's representations about attachment relationships. To extend findings on attachment in foster children and its predictors, our study examined both attachment behavior and representations in foster children aged between 3 and 8 years. Diverse potential predictors including child variables, birth parents' variables, pre-placement experiences, and foster caregiver's behavior were included in the analyses. Results revealed that foster children showed both lower attachment security and higher disorganization scores than children in low-risk samples. Attachment behavior and representation were found to be widely independent from each other. Different factors contributed to attachment behavior and representation: whereas foster children's attachment behavior was mainly influenced by foster parents' behavior, pre-placement experiences did predict hyperactivation and disorganization on the representational level. The results indicate that, when intervening with foster families, it seems crucial to focus not exclusively on the promotion of secure attachment behavior but also to develop interventions enhancing secure and organized attachment representations. PMID:26412616

  19. Temperament, disordered attachment and parental sensitivity in foster care: Differential findings on attachment security for shy children

    NARCIS (Netherlands)

    Schipper, de J.C.; Oosterman, M.; Schuengel, C.

    2012-01-01

    In a foster care sample, we tested the moderating effect of temperamental shyness on the association between parental sensitivity and attachment quality. The foster parents of 59 foster children (age M = 57 months, SD = 16.4) filled out the Child Behavior Questionnaire. To control for confounds, sym

  20. Nanocellulose/nanobentonite composite anchored with multi-carboxyl functional groups as an adsorbent for the effective removal of Cobalt(II) from nuclear industry wastewater samples.

    Science.gov (United States)

    Anirudhan, T S; Deepa, J R; Christa, J

    2016-04-01

    A novel adsorbent, poly(itaconic acid/methacrylic acid)-grafted-nanocellulose/nanobentonite composite [P(IA/MAA)-g-NC/NB] with multi carboxyl functional groups for the effective removal of Cobalt(II) [Co(II)] from aqueous solutions. The adsorbent was characterized using FTIR, XRD, SEM-EDS, AFM and potentiometric titrations before and after adsorption of Co(II) ions. FTIR spectra revealed that Co(II) adsorption on to the polymer may be due to the involvement of COOH groups. The surface morphological changes were observed by the SEM images. The pH was optimized as 6.0. An adsorbent dose of 2.0g/L found to be sufficient for the complete removal of Co(II) from 100mg/L at room temperature. Pseudo-first-order and pseudo-second-order models were tested to describe kinetic data and adsorption of Co(II) follows pseudo-second-order model. The equilibrium attained at 120min. Isotherm studies were conducted and data were analyzed using Langmuir, Freundlich and Sips isotherm models and best fit was Sips model. Thermodynamic study confirmed endothermic and physical nature of adsorption of the Co(II) onto the adsorbent. Desorption experiments were done with 0.1MHCl proved that without significant loss in performance adsorbent could be reused for six cycles. The practical efficacy and effectiveness of the adsorbent were tested using nuclear industrial wastewater. A double stage batch adsorption system was designed from the adsorption isotherm data of Co(II) by constructing operating lines. PMID:26844393

  1. After Love: Attachment Styles and Grief Themes.

    Science.gov (United States)

    Pistole, M. Carole

    1996-01-01

    Examines the association of attachment organization and recalled grief responses following the dissolution of a romantic relationship. Data based on college students' (N=118) responses resulted in four interpretable grief themes. Preoccupied attachment predicted self-reproach, fearful attachment predicted partner blame, whereas both fearful and…

  2. Adolescents' Attachment and Coping with Stress

    Science.gov (United States)

    Howard, Michelle S.; Medway, Frederic J.

    2004-01-01

    This study examined how high school students cope with stress as a function of their attachment style. Data were gathered from 75 adolescent-parent pairs in Texas and included measures of attachment, coping style, life stress, and whom the respondent would turn to in times of stress. Adolescents' attachment security was positively related to…

  3. Method for detecting pathogens attached to specific antibodies

    Science.gov (United States)

    Miles, Robin R.; Venkateswaran, Kodumudi S.; Fuller, Christopher K.

    2005-01-25

    The use of impedance measurements to detect the presence of pathogens attached to antibody-coated beads. In a fluidic device antibodies are immobilized on a surface of a patterned interdigitated electrode. Pathogens in a sample fluid streaming past the electrode attach to the immobilized antibodies, which produces a change in impedance between two adjacent electrodes, which impedance change is measured and used to detect the presence of a pathogen. To amplify the signal, beads coated with antibodies are introduced and the beads would stick to the pathogen causing a greater change in impedance between the two adjacent electrodes.

  4. Personal style of the therapist, attachment style and personality trait

    OpenAIRE

    Gabriel Genise

    2015-01-01

    The aim of this study is to analyze the relationship between the personal style of the therapist, attachment style and personality trait. It was used the personal style of the therapist questionnaire (PST – Q), the Argentinean attachment inventory and the big five inventory. The study sample consisted of 120 psychotherapists average age of 36.28 years (SD = 9.65), and the average years of experience was 7.90 years (SD = 8.04). The analysis of the results showed that there is a positive, signi...

  5. Prediction of Addiction Potential in Youth According to Attachment Styles

    OpenAIRE

    Mahdieh Adroom; Parviz Reza Mirlotfi; Zahra Nikmanesh; Raziyeh Shahidi; Leila KeikhaP

    2014-01-01

    Background: The present study aim is to predict the psychological inclination to drug use in youths by studying their attachment styles. Materials and Methods: The research sample includes male and female students of Zahedan Medical Science University with the average age of 19-24. The proportional cluster random sampling was used for selection of participant. The hypotheses were analyzed, using Pearson correlation method, regression analysis, one way variance analysis and t-test for two i...

  6. H I CONTENT AND OPTICAL PROPERTIES OF FIELD GALAXIES FROM THE ALFALFA SURVEY. II. MULTIVARIATE ANALYSIS OF A GALAXY SAMPLE IN LOW-DENSITY ENVIRONMENTS

    International Nuclear Information System (INIS)

    This is the second paper of two reporting results from a study of the H I content and stellar properties of nearby galaxies detected by the Arecibo Legacy Fast ALFA blind 21 cm line survey and the Sloan Digital Sky Survey in a 2160 deg2 region of high galactic latitude sky covered by both surveys, in the general Virgo direction. Here, we analyze a complete H I flux-limited subset of 1624 objects with homogeneously measured 21 cm and multi-wavelength optical attributes extracted from the control sample of H I emitters in environments of low local galactic density assembled by Toribio et al. (Paper I). Strategies of multivariate data analysis are applied to this data set in order to (i) investigate the correlation structure of the space defined by an extensive set of potentially independent observables describing gas-rich systems, (ii) identify the intrinsic parameters that best define their neutral gas content, and (iii) explore the scaling relations arising from the joint distributions of the quantities most strongly correlated with the H I mass. The principal component analysis performed over a set of five galaxy properties reveals that they are strongly interrelated, supporting previous claims that nearby H I emitters show a high degree of correlation. The best predictors for the expected value of MHI are the diameter of the stellar disk, D25,r, followed by the total luminosity (both in the r band), and the maximum rotation speed, while morphological proxies such as color show only a moderately strong correlation with the gaseous content attenuated by observational error. Among the various inferred prescriptions, the simplest and most accurate is log(MHI/Msun) = 8.72 + 1.25 log(D25,r/kpc). We find a slope of -8.2 ± 0.5 for the relation between optical magnitude and log rotation speed, in good agreement with Tully-Fisher studies, as well as a log slope of 1.55 ± 0.06 for the H I mass-optical galaxy size relation. Given the homogeneity of the measurements and the

  7. Selective determination of cadmium(II) from divalent metal ions in environmental samples by capillary electrophoresis using in-capillary complexation with a lacunary Keggin-type [PW11O39]7- complex.

    Science.gov (United States)

    Himeno, Sadayuki; Kitano, Eri; Morishita, Kenta

    2007-08-01

    A novel capillary electrophoretic (CE) method, based on in-capillary complexation with [PW(11)O(39)](7-), was developed for the determination of cadmium(II) in natural water samples. When a sample solution is injected into a capillary containing 0.20 mM [PW(11)O(39)](7-) and 0.10 M malonate buffer (pH 3.0), the ternary Keggin-type complex, [P(Cd(II)W(11))O(39)](5-), which possesses high molar absorbtivities in the UV region, is formed in the capillary, and its migration toward the anode gives a well-defined migration peak in the electropherogram. An advantage of this method is that many divalent metal ions do not interfere. The proposed method was successfully applied to the determination of Cd(II) in environmental samples. The detection limits were 1 x 10(-7) and 5 x 10(-7) M for river-water and seawater samples, respectively (signal-to-noise ratio = 3). PMID:17690428

  8. Strains around distally inclined implants retaining mandibular overdentures with Locator attachments: an in vitro study

    OpenAIRE

    Elsyad, Moustafa Abdou; Setta, Fathi Abo; Khirallah, Ahmed Samir

    2016-01-01

    PURPOSE The aim of the present study was to evaluate, by means of strain gauge analysis, the effect of different implant angulations on strains around two implants retaining mandibular overdenture with Locator attachments. MATERIALS AND METHODS Four duplicate mandibular acrylic models were constructed. Two implants were inserted in the canine regions using the following degrees of distal inclinations: group I (control); 0°, group II; 10°, group III; 20°, and group IV; 30°. Locator pink attach...

  9. How Do School Connectedness and Attachment to Parents Interrelate in Predicting Adolescent Depressive Symptoms?

    Science.gov (United States)

    Shochet, Ian M.; Homel, Ross; Cockshaw, Wendell D.; Montgomery, Danielle T.

    2008-01-01

    In this study, we tested whether school connectedness mediated or moderated the effect of parental attachment on adolescent depressive symptoms. A sample of 153 secondary school students ranging from 8th to 12th grade were assessed using measures of parental attachment, school connectedness, and depressive symptoms. Independently, parental…

  10. Examining the Link between Infant Attachment and Child Conduct Problems in Grade 1

    Science.gov (United States)

    Vando, Jessica; Rhule-Louie, Dana M.; McMahon, Robert J.; Spieker, Susan J.

    2008-01-01

    We examined the extent to which infant attachment status is directly related to child conduct problems 6 years later, and assessed the potential mediating roles of hostile parenting and maternal depression. The sample included 84 adolescent mothers and their children (45 girls, 39 boys). Infant attachment status was assessed using the Strange…

  11. Influence of Attachment and Separation Experience on Separation Distress at 18 Months.

    Science.gov (United States)

    Jacobson, Joseph L; Wille, Diane E.

    1984-01-01

    Distress in response to brief maternal separations was examined in a sample of 93 predominantly home-reared infants using the Ainsworth strange situation paradigm. At 18 months, the age when separation protests begin to decline, securely attached infants are better able than anxiously attached infants to tolerate maternal separations. (Author/RH)

  12. Examining Attachment to God and Health Risk-Taking Behaviors in College Students

    NARCIS (Netherlands)

    Barrett, J.; Horton, K.D.; Ellison, Ch.G.; Loukas, A.; Downey, D.L.

    2012-01-01

    Drawing on insights from attachment theory, this study examined whether three types of attachment to God—secure, avoidant, and anxious—were associated with health-risk behaviors, over and above the effects of religious attendance, peer support, and demographic covariates, in a sample of 328 undergra

  13. Identity and Intimacy during Adolescence: Connections among Identity Styles, Romantic Attachment and Identity Commitment

    Science.gov (United States)

    Kerpelman, Jennifer L.; Pittman, Joe F.; Cadely, Hans Saint-Eloi; Tuggle, Felicia J.; Harrell-Levy, Marinda K.; Adler-Baeder, Francesca M.

    2012-01-01

    Integration of adult attachment and psychosocial development theories suggests that adolescence is a time when capacities for romantic intimacy and identity formation are co-evolving. The current study addressed direct, indirect and moderated associations among identity and romantic attachment constructs with a diverse sample of 2178 middle…

  14. Association between Adult Romantic Attachment Styles and Family-of-Origin Expressive Atmosphere

    Science.gov (United States)

    Smith, Shannon D.; Ng, Kok-Mun

    2009-01-01

    This study examined the associations between attachment quality and perceived family-of-origin expressive atmosphere (FOEA) in a convenience sample of 279 participants. Multivariate analysis of variance (MAN-OVA) was used to examine the associations between attachment style and FOEA, and hierarchical regression was used to analyze FOEA as a…

  15. Parental Attachment, Psychological Separation and Eating Disorder Symptoms among College Women.

    Science.gov (United States)

    Kenny, Maureen E.

    In this study the relationship of parental attachment and psychological separation to levels of eating disorder symptoms was examined for a sample of college women (N=162) from English classes at a private, urban, coeducational Jesuit university in the northeast. Participants resonded to the Parental Attachment Questionnaire, the Parental…

  16. Predictors of Level of Voice in Adolescent Girls: Ethnicity, Attachment, and Gender Role Socialization

    Science.gov (United States)

    Theran, Sally A.

    2009-01-01

    The current study empirically examined predictors of level of voice (ethnicity, attachment, and gender role socialization) in a diverse sample of 108 14-year-old girls. Structural equation modeling results indicated that parental attachment predicted level of voice with authority figures, and gender role socialization predicted level of voice with…

  17. Associations between Working Models of Attachment and Conflict Management Behavior in Romantic Couples

    Science.gov (United States)

    Creasey, Gary

    2002-01-01

    The goal of this study was to specify relations between internal working models of attachment (IWM) and conflict management behaviors in a sample of young adults involved in romantic relationships. One hundred forty-five romantic couples were recruited to address this goal. All participants were administered the Adult Attachment Interview (C.…

  18. Adult Attachment States of Mind: Measurement Invariance across Ethnicity and Associations with Maternal Sensitivity

    Science.gov (United States)

    Haltigan, John D.; Leerkes, Esther M.; Wong, Maria S.; Fortuna, Keren; Roisman, Glenn I.; Supple, Andrew J.; O'Brien, Marion; Calkins, Susan D.; Plamondon, André

    2014-01-01

    This study examined the developmental significance of mothers' adult attachment representations assessed prenatally with the Adult Attachment Interview in relation to observed maternal sensitivity at 6 months postpartum in an ethnically diverse sample (N = 131 African American; N = 128 European American). Multiple-group confirmatory factor…

  19. Adaptive and Maladaptive Perfectionism as Mediators of Adult Attachment Styles and Depression, Hopelessness, and Life Satisfaction

    Science.gov (United States)

    Gnilka, Philip B.; Ashby, Jeffrey S.; Noble, Christina M.

    2013-01-01

    This study examined the relationships between adaptive and maladaptive perfectionism, anxious and avoidant adult attachment styles, depression, hopelessness, and life satisfaction among a sample of 180 undergraduate students. Maladaptive perfectionism mediated the relationship between both forms of adult attachment and depression, hopelessness,…

  20. Attachment Theory and Theory of Planned Behavior: An Integrative Model Predicting Underage Drinking

    Science.gov (United States)

    Lac, Andrew; Crano, William D.; Berger, Dale E.; Alvaro, Eusebio M.

    2013-01-01

    Research indicates that peer and maternal bonds play important but sometimes contrasting roles in the outcomes of children. Less is known about attachment bonds to these 2 reference groups in young adults. Using a sample of 351 participants (18 to 20 years of age), the research integrated two theoretical traditions: attachment theory and theory of…

  1. Peer Attachment, Coping, and Self-Esteem in Institutionalized Adolescents: The Mediating Role of Social Skills

    Science.gov (United States)

    Mota, Catarina Pinheiro; Matos, Paula Mena

    2013-01-01

    This study analyzes the contribution of peer attachment in predicting active coping and self-esteem in a sample of 109 institutionalized adolescents. It also explores the mediating role of social skills in the association between peer attachment, coping, and self-esteem. Structural equation modeling identified a model able to predict a positive…

  2. Attachment styles and self-concept: basis for positive adolescence

    Directory of Open Access Journals (Sweden)

    Valeria S. Martínez Festorazzi

    2015-08-01

    Full Text Available The nature and characteristics of the primary bonds and attachment styles wwhich are established with parental figures and / or their surrogates in the first years of life, without doubt are one of the basis and models for later relationships. Intense changes will be produce particularly during adolescence in the parental bonds and the scenario, which defines and reinforces personal autonomy to be extended. In this way, self-concept is probably one of the most researched constructs in psychological tradition if we compare it with other psychological and contextual variables. Nevertheless, a few studies explore especially the relationship between attachment and self-concept in adolescents. The aim of this empirical study was to analyze the relationship between attachment styles and self-concept dimensions in adolescents, from a salutogenic approach in order to identify if certain attachment characteristics are associated with more positive aspects of self-concept. A sample of 583 adolescents aged 15- 18 years from public and private schools in Mar del Plata completed the AF5 and IPPA scales. Significant positive relationships were confirmed between secure attachment style and self- concept dimensions. These results provide empirical support to advance in the research about which characteristics are specifically related to positive and healthy development in adolescents. 

  3. Effect of simulated masticatory loading on the retention of stud attachments for implant overdentures.

    Science.gov (United States)

    Abi Nader, S; de Souza, R F; Fortin, D; De Koninck, L; Fromentin, O; Albuquerque Junior, R F

    2011-03-01

    This study assessed the effect of simulated mastication on the retention of two stud attachment systems for 2-implants overdentures. Sixteen specimens, each simulating an edentulous ridge with implants and an overdenture were divided into two groups, according to the attachment system: Group I (Nobel Biocare ball-socket attachments) and Group II (Locator attachments). Retention forces were measured before and after 400,000 simulated masticatory loads in a customised device. Data were compared by two-way anova followed by Bonferroni test (α = 0·05). Group I presented significantly lower retention forces (Newtons) than Group II at baseline (10·6 ± 3·6 and 66·4 ± 16·0, respectively). However, differences were not significant after 400,000 loads (7·9 ± 4·3 and 21·6 ± 17·0). The number of cycles did not influence the measurements in Group I, whereas a non-linear descending curve was found for Group II. It was concluded that simulated mastication resulted in minor changes for the ball attachment tested. Nevertheless, it reduced the retention of Locator attachments to 40% of the baseline values, what suggests that mastication is a major factor associated with maintenance needs for this system. PMID:20819139

  4. On the Prediction of Opium Addicts’ Changeability through Early Maladaptive Schemas and Attachment Styles

    Directory of Open Access Journals (Sweden)

    F Asghari

    2016-02-01

    Full Text Available Objective: This study was an attempt to investigate the role of early maladaptive schemas and attachment styles in changeability of opium addicts. Method: The research method was descriptive-correlation and the number of 162 male opium addicts was selected via convenience sampling. For data collection purposes, Yang's early maladaptive schemas and Collins and Read’s adult attachment scale, and Rhode Island’s changeability scale were used. Results: The results showed that 38.1% of the changeability variance is predicted by secure attachment, avoidant attachment, and early maladaptive schemas. In the same way, avoidant and ambivalent attachment styles were positively associated with early maladaptive schemas. Conclusion: Due to the effect of early maladaptive schemas and insecure attachment styles on the incidence of maladaptive behavior, changeability of opium addicts can be expected to increase through the modification dysfunctional thoughts and systemic relations. 

  5. Comparison of the Bender Gestalt-II and VMI-V in Samples of Typical Children and Children with High-Functioning Autism Spectrum Disorders

    Science.gov (United States)

    Volker, Martin A.; Lopata, Christopher; Vujnovic, Rebecca K.; Smerbeck, Audrey M.; Toomey, Jennifer A.; Rodgers, Jonathan D.; Schiavo, Audrey; Thomeer, Marcus L.

    2010-01-01

    The visual-motor skills of 60 children with high-functioning autism spectrum disorders (HFASDs) and 46 typically developing children were assessed using the Bender Visual-Motor Gestalt Test-Second Edition (BG-II) and Beery-Buktenica Developmental Test of Visual-Motor Integration, Fifth Edition (VMI-V). Within-group comparisons yielded substantive…

  6. LC/MS quantitative study of glucose by iodine attachment

    International Nuclear Information System (INIS)

    We explored the potential of iodine attachment to improve the sensitivity of glucose measurement by LC/MS. After sample preparation, glucose was separated by normal phase chromatography, followed by anionization by I--attachment prior to MS by post-column addition of a methanolic solution of iodoform. Iodine is capable of forming an anionic adduct with neutral monosaccharides in negative ion mode electrospray mass spectrometry. Quasi-molecular ions [M + I]- of glucose, and [6,6-2H2]glucose (abbreviated d2-glucose) internal standard were quantitated in selected ion monitoring (SIM) mode. Iodine attachment LC/MS analysis provided high sensitivity, superior to GC/MS. It greatly simplified sample preparation and increased throughput. The advantages of iodine attachment can be realized even on old mass spectrometers. A LOD of 50 pg glucose on column was achieved. Due to iodine's predisposition to sublimate, the iodoform concentration must be minimized, which adds complexity to method development. To optimize reagent concentration we developed an efficient and flexible gradient-based delivery platform. Strategy for method development with iodoform is given

  7. Association Between Insecure Attachment and ADHD

    DEFF Research Database (Denmark)

    Storebo, Ole Jakob; Darling Rasmussen, Pernille; Simonsen, Erik

    2016-01-01

    Objective: Psychological theories have postulated an association between insecure attachment and ADHD. The objective of this study is to investigate possible association between insecure attachment and ADHD in children and adults. Method: Review of literature was performed using the Psyc......INFO, Medline, and EMBASE databases. Results: Twenty-nine studies were included in the review. Overall, the studies showed that parental attachment problems and environmental mediating factors were significantly associated with childhood ADHD. Adults with ADHD had a much higher incidence of insecure attachment...... styles than reported in the general population. Conclusion: There seems to be a clear association between ADHD and insecure attachment. It is likely that early intervention in the form of parent training and pharmacological treatment may prevent development of attachment problems. But such studies have...

  8. Bad blood revisited: Attachment and psychoanalysis, 2015

    OpenAIRE

    Fonagy, P; Campbell, C

    2015-01-01

    "There is bad blood between psychoanalysis and attachment theory. As with many family feuds, it is hard to identify where the problem began. (Fonagy, 2001, p.1)" Thus began an attempt, Attachment Theory and Psychoanalysis, written 15 years ago, to trace the relationship between attachment and psychoanalysis, disentangle conceptual similarities and differences, and point to areas of convergence that were then emerging in the field. Here, we will attempt a conceptual progress report on how thin...

  9. Emergence of tempered preferential attachment from optimization

    OpenAIRE

    D'Souza, Raissa M.; Borgs, Christian; Chayes, Jennifer T.; Berger, Noam; Kleinberg, Robert D.

    2007-01-01

    We show how preferential attachment can emerge in an optimization framework, resolving a long-standing theoretical controversy. We also show that the preferential attachment model so obtained has two novel features, saturation and viability, which have natural interpretations in the underlying network and lead to a power-law degree distribution with exponential cutoff. Moreover, we consider a generalized version of this preferential attachment model with independent saturation and viability, ...

  10. Temperament and attachment: one construct or two?

    Science.gov (United States)

    Mangelsdorf, S C; Frosch, C A

    1999-01-01

    In this chapter we described the constructs of temperament and attachment and have discussed similarities and differences between the two. We addressed the issue of whether temperament contributes to overall attachment security or to the specific type of attachment that children display. We conclude that although temperament may influence the type of secure and insecure attachment relationship children form with their parent, temperament alone will not determine if a child is classified as securely or insecurely attached. We presented evidence suggesting that certain dimensions of temperament, specifically negative emotionality, may be associated with infants' behavior during the Strange Situation, such as proneness-to-distress during separations. However, we noted that these temperament dimensions do not predict overall security of attachment. It is likely that although no single temperament characteristic, such as proneness-to-distress, in and of itself determines overall attachment security, it is possible that a constellation of temperament characteristics may be more strongly related to attachment security. The examination of constellations of temperament characteristics may be particularly useful for furthering our understanding of individual differences within attachment classifications. Such an approach may elucidate the reasons why infants are classified into one subgroup of secure, insecure-avoidant, or insecure-resistant attachment versus another subgroup. Furthermore, we suggest that the collection of findings regarding temperament and attachment not only underscores the importance of a transactional approach to early social-emotional development, but emphasizes that temperament and attachment can make unique and interactive contributions to children's social-emotional functioning. That is, the goodness-of-fit between infant and parent characteristics may best predict security of attachment. Although child characteristics clearly contribute to the

  11. Attachment theory: Old and new approach

    Directory of Open Access Journals (Sweden)

    Polovina Nada

    2005-01-01

    Full Text Available The article is an attempt to present holistically the key concepts of attachment theory rediscovered for its potentials. The presented concepts include: narrow definition of attachment, behavioral control system of attachment, attachment working model and patterns of attachment. The concepts are presented in the context of child attachment theory and adult attachment theory, in addition to description of the development of attachment. Concepts, as well as developmental processes are presented from the stand point of pioneers in this field (John Bowlby and Mary Ainsworth as well as from the standpoint of their successors (Everett Waters and Malcolm West. Compacted ness of the theory, possibilities for operationalization of its key concepts and its application to empirical studies of complex psychological issues that have never been scientifically explored, makes it a very prospective theory in view of possible integration of existing research findings and initiating new research and new practices in psychotherapy, social work and work in schools. The goal of this integral presentation of attachment theory is to highlight its benefits and possibilities for understanding and research complex field of human's psychosocial functioning.

  12. Sine-Bar Attachment For Machine Tools

    Science.gov (United States)

    Mann, Franklin D.

    1988-01-01

    Sine-bar attachment for collets, spindles, and chucks helps machinists set up quickly for precise angular cuts that require greater precision than provided by graduations of machine tools. Machinist uses attachment to index head, carriage of milling machine or lathe relative to table or turning axis of tool. Attachment accurate to 1 minute or arc depending on length of sine bar and precision of gauge blocks in setup. Attachment installs quickly and easily on almost any type of lathe or mill. Requires no special clamps or fixtures, and eliminates many trial-and-error measurements. More stable than improvised setups and not jarred out of position readily.

  13. Oxytocin enhances the experience of attachment security

    Science.gov (United States)

    Buchheim, Anna; Heinrichs, Markus; George, Carol; Pokorny, Dan; Koops, Eva; Henningsen, Peter; O’Connor, Mary-Frances; Gundel, Harald

    2011-01-01

    Summary Repeated interactions between infant and caregiver result in either secure or insecure relationship attachment patterns, and insecure attachment may affect individual emotion-regulation and health. Given that oxytocin enhances social approach behavior in animals and humans, we hypothesized that oxytocin might also promote the experience of attachment security in humans. Within a 3-week interval 26 healthy male students classified with an insecure attachment pattern were invited twice to an experimental session. Within each session, a single dose of oxytocin or placebo was administered, using a double-blind, placebo-controlled within-subject design. In both conditions, subjects completed an attachment task based on the Adult Attachment Projective Picture System (AAP). Thirty-two AAP picture system presentations depicted attachment-related events (e.g. illness, solitude, separation, loss), and were each accompanied by four prototypical phrases representing one secure and three insecure attachment categories. In the oxytocin condition, a significant proportion of these insecure subjects (N = 18; 69%) changed their rankings of “secure attachment” phrases towards the more appropriate for the AAP picture presentation, and the same subjects decreased in overall rating of the “insecure attachment” phrases. In particular, there was a significant decrease in the number of subjects ranking the pictures with “insecure-preoccupied” phrases from the placebo to the oxytocin condition. We find that a single dose of intranasally administered oxytocin is sufficient to induce a significant increase in the experience of attachment security in adults classified previously as insecure. PMID:19457618

  14. Workers at CCAS attach solar panel to FUSE satellite.

    Science.gov (United States)

    1999-01-01

    At Hangar AE, Cape Canaveral Air Station (CCAS), workers attach a solar panel to NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. FUSE was developed by The Johns Hopkins University under contract to Goddard Space Flight Center, Greenbelt, Md., to investigate the origin and evolution of the lightest elements in the universe - hydrogen and deuterium. In addition, the FUSE satellite will examine the forces and process involved in the evolution of the galaxies, stars and planetary systems by investigating light in the far ultraviolet portion of the electromagnetic spectrum. FUSE is targeted for launch June 23 from Launch Pad 17A, CCAS, aboard a Boeing Delta II rocket.

  15. SAGE II Ozone Analysis

    Science.gov (United States)

    Cunnold, Derek; Wang, Ray

    2002-01-01

    Publications from 1999-2002 describing research funded by the SAGE II contract to Dr. Cunnold and Dr. Wang are listed below. Our most recent accomplishments include a detailed analysis of the quality of SAGE II, v6.1, ozone measurements below 20 km altitude (Wang et al., 2002 and Kar et al., 2002) and an analysis of the consistency between SAGE upper stratospheric ozone trends and model predictions with emphasis on hemispheric asymmetry (Li et al., 2001). Abstracts of the 11 papers are attached.

  16. The Relationship between Parenting Styles and Adult Attachment Styles from Jordan University Students

    OpenAIRE

    Ahmad M. Mahasneh; Zohair H. Al-Zoubi; Omar T. Batayenh; Mohammad S. Jawarneh

    2013-01-01

    The purpose of this study was to examine the relationship between parenting styles and adult attachment styles. A random sample of (564) male and female students at the faculty of educational sciences was chosen selected. Two questionnaires on attachment styles and parenting styles were administered to the selected sample population during the academic year of 2012-2013. Results indicated significant positive correlations between the authoritative, negligent and authoritarian parenting styles...

  17. The Role of Depression and Attachment Styles in Predicting Students’ Addiction to Cell Phones

    OpenAIRE

    Ghasempour, Abdollah; Mahmoodi-Aghdam, Mansour

    2015-01-01

    Background The present study aimed at investigating the role of depression and attachment styles in predicting cell phone addiction. Methods In this descriptive correlational study, a sample including 100 students of Payame Noor University (PNU), Reyneh Center, Iran, in the academic year of 2013-2014 was selected using volunteer sampling. Participants were asked to complete the adult attachment inventory (AAI), Beck depression inventory-13 (BDI-13) and the cell phone overuse scale (COS). Find...

  18. Frightened Versus Not Frightened Disorganized Infant Attachment: Newborn Characteristics and Maternal Caregiving

    OpenAIRE

    Padrón, Elena; Carlson, Elizabeth A.; Sroufe, L. Alan

    2014-01-01

    The disorganized infant has been described as experiencing “fright without solution” (Hesse & Main, 1999, p. 484) within the attachment relationship. Using a sample at risk because of poverty (n=157), this study evaluated the role of newborn characteristics in predicting disorganized attachment and explored the existence of two subgroups of disorganized infants, based on whether they display direct indices of fear. For the entire sample, regression analyses revealed that newborn characteristi...

  19. Sulphate radical generation through interaction of peroxymonosulphate with Co(II) for in-line sample preparation aiming at spectrophotometric flow-based determination of phosphate and phosphite in fertilizers.

    Science.gov (United States)

    Crispino, Carla C; Kamogawa, Marcos Y; Ferreira, José R; Zagatto, Elias A G

    2016-09-01

    An advanced oxidative process relying on the interaction of peroxymonosulphate and cobalt(II) was implemented for generating the sulphate radicals in flow analysis, in order to accomplish in-line sample preparation thus improving the spectrophotometric determination of phosphate and phosphite in liquid foliar fertilizers. To this end, a flow-batch system with a heated chamber was designed. The sample was handled twice, with and without the step of phosphite oxidation to phosphate, and the formed orthophosphate was quantified after interaction with the vanadate-molybdate reagent. Phosphite was determined as the difference in analytical signals corresponding to sample handling with and without the oxidation step. Influence of Co(II) on the peroxymonosulphate activation, reagent concentrations and added volumes, acidity, temperature and heating time were investigated like aiming at to improve analytical recovery and measurement repeatability, as well as the and system ruggedness. The 6.6-20.0mgL(-1) P2O5 standards were in-line prepared from a single stock solution. Detection limits were estimated as 0.8 and 0.1mgL(-1) for P2O5 and P-PO4. Twenty-four samples are were run per hour, and results are were in agreement with those obtained by the official procedure. PMID:27343605

  20. Simplistic Attachment and Multispectral Imaging with Semiconductor Nanocrystals

    Directory of Open Access Journals (Sweden)

    Sara G. Becker-Catania

    2011-11-01

    Full Text Available Advances in spectral deconvolution technologies are rapidly enabling researchers to replace or enhance traditional epifluorescence microscopes with instruments capable of detecting numerous markers simultaneously in a multiplexed fashion. While significantly expediting sample throughput and elucidating sample information, this technology is limited by the spectral width of common fluorescence reporters. Semiconductor nanocrystals (NC’s are very bright, narrow band fluorescence emitters with great potential for multiplexed fluorescence detection, however the availability of NC’s with facile attachment chemistries to targeting molecules has been a severe limitation to the advancement of NC technology in applications such as immunocytochemistry and immunohistochemistry. Here we report the development of simple, yet novel attachment chemistries for antibodies onto NC’s and demonstrate how spectral deconvolution technology enables the multiplexed detection of 5 distinct NC-antibody conjugates with fluorescence emission wavelengths separated by as little as 20 nm.

  1. The role of both parents’ attachment pattern in understanding childhood obesity

    Directory of Open Access Journals (Sweden)

    ClaudiaMazzeschi

    2014-07-01

    Full Text Available Within the research area on the determinants of childhood obesity, a relatively new approach is the use of attachment theory to explore the mechanisms underlying children’s obesity risk, especially considered as emotion regulation strategies in parent-child relationship. Few are the empirical researches that have addressed this issue. The empirical investigations have used self-report measures to assess adult attachment. In attachment studies, the use of interview methods and/or performance-based instruments is advised to evaluate the entire range of possible adult attachment patterns and comprehensively explain the emotional strategies, correlates and consequences of individual differences in attachment system functioning. The aim of this study was to explore the extent to which both parents’ attachment patterns serve as self-regulative mechanisms related to childhood overweight/obesity by the Adult Attachment Projective Picture System (AAP in a sample of 44 mothers and fathers of children referred for obesity. Insecure attachment was found as a risk factor both for mothers’ and fathers’. Also unresolved/disorganization was found to play a significant role in childhood obesity. The role of father’s attachment was explored and findings suggested considering it in etiology and treatment of childhood obesity.

  2. Hamiltonian dynamics of preferential attachment

    Science.gov (United States)

    Zuev, Konstantin; Papadopoulos, Fragkiskos; Krioukov, Dmitri

    2016-03-01

    Prediction and control of network dynamics are grand-challenge problems in network science. The lack of understanding of fundamental laws driving the dynamics of networks is among the reasons why many practical problems of great significance remain unsolved for decades. Here we study the dynamics of networks evolving according to preferential attachment (PA), known to approximate well the large-scale growth dynamics of a variety of real networks. We show that this dynamics is Hamiltonian, thus casting the study of complex networks dynamics to the powerful canonical formalism, in which the time evolution of a dynamical system is described by Hamilton’s equations. We derive the explicit form of the Hamiltonian that governs network growth in PA. This Hamiltonian turns out to be nearly identical to graph energy in the configuration model, which shows that the ensemble of random graphs generated by PA is nearly identical to the ensemble of random graphs with scale-free degree distributions. In other words, PA generates nothing but random graphs with power-law degree distribution. The extension of the developed canonical formalism for network analysis to richer geometric network models with non-degenerate groups of symmetries may eventually lead to a system of equations describing network dynamics at small scales.

  3. Hamiltonian dynamics of preferential attachment

    International Nuclear Information System (INIS)

    Prediction and control of network dynamics are grand-challenge problems in network science. The lack of understanding of fundamental laws driving the dynamics of networks is among the reasons why many practical problems of great significance remain unsolved for decades. Here we study the dynamics of networks evolving according to preferential attachment (PA), known to approximate well the large-scale growth dynamics of a variety of real networks. We show that this dynamics is Hamiltonian, thus casting the study of complex networks dynamics to the powerful canonical formalism, in which the time evolution of a dynamical system is described by Hamilton’s equations. We derive the explicit form of the Hamiltonian that governs network growth in PA. This Hamiltonian turns out to be nearly identical to graph energy in the configuration model, which shows that the ensemble of random graphs generated by PA is nearly identical to the ensemble of random graphs with scale-free degree distributions. In other words, PA generates nothing but random graphs with power-law degree distribution. The extension of the developed canonical formalism for network analysis to richer geometric network models with non-degenerate groups of symmetries may eventually lead to a system of equations describing network dynamics at small scales. (paper)

  4. Coexistence in preferential attachment networks

    CERN Document Server

    Antunović, Tonći; Racz, Miklos Z

    2013-01-01

    Competition in markets is ubiquitous: cell-phone providers, computer manufacturers, and sport gear brands all vie for customers. Though several coexisting competitors are often observed in empirical data, many current theoretical models of competition on small-world networks predict a single winner taking over the majority of the network. We introduce a new model of product adoption that focuses on word-of-mouth recommendations to provide an explanation for this coexistence of competitors. The key property of our model is that customer choices evolve simultaneously with the network of customers. When a new node joins the network, it chooses neighbors according to preferential attachment, and then chooses its type based on the number of initial neighbors of each type. This can model a new cell-phone user choosing a cell-phone provider, a new student choosing a laptop, or a new athletic team member choosing a gear provider. We provide a detailed analysis of the new model; in particular, we determine the possibl...

  5. Perinatal Depression and Patterns of Attachment: A Critical Risk Factor?

    OpenAIRE

    Valentina Meuti; Franca Aceti; Nicoletta Giacchetti; Giuseppe Mattia Carluccio; Michela Zaccagni; Isabella Marini; Orazio Giancola; Paola Ciolli; Massimo Biondi

    2015-01-01

    Background. This study aims to verify if the presence and severity of perinatal depression are related to any particular pattern of attachment. Methods. The study started with a screening of a sample of 453 women in their third trimester of pregnancy, who were administered a survey data form, the Edinburgh Postnatal Depression Scale (EPDS) and the Experience in Close Relationship (ECR). A clinical group of subjects with perinatal depression (PND, 89 subjects) was selected and compared with a ...

  6. The Role of Relationship Attachment Styles in Disordered Eating Behaviors

    OpenAIRE

    Erica Landrau; Jerome Short

    2010-01-01

    This study examined women's eating disorder symptoms and the quality of the attachment relationship with their mothers and romantic partners for a sample of 117 participants, ages 18 to 22. Seventeen of the participants were in treatment for an eating disorder and 100 were untreated college students, but engaging in binge eating. There were no significant differences between the groups in dieting and bingeing. The treated group reported higher levels of depression, anxiety, esteem threat from...

  7. Measuring Patients’ Attachment Avoidance in Psychotherapy: Development of the Attachment Avoidance in Therapy Scale (AATS

    Directory of Open Access Journals (Sweden)

    András Láng

    2012-11-01

    Full Text Available A new scale measuring patient-therapist attachment avoidance was developed. Attachment Avoidance in Therapy Scale is a new measure based on the Bartholomew model of adult attachment (Bartholomew & Horowitz, 1991 and the Experience in Close Relationships Scale (Brennan, Clark, & Shaver, 1998 to measure patients’ attachment avoidance towards therapists. With 112 patient-therapist dyads participating in the study, validation of a preliminary scale – measuring both attachment anxiety and attachment avoidance in therapy – took place using therapists’ evaluations of patients’ relational behavior and patients’ self-reports about their attitude toward psychotherapy. Analysis of the data revealed six underlying scales. Results showed all six scales to be reliable. Validation of scales measuring attachment anxiety failed. The importance of Attachment Avoidance in Therapy Scale and its subscales is discussed.

  8. Attachment of Salmonella spp. to pork meat

    DEFF Research Database (Denmark)

    Hansen, Trine; Riber, Leise; Löfström, Charlotta;

    2011-01-01

    Five strains of Salmonella, one wildtype and four knock-out mutants (the prg, flhDC, yhjH and fliC genes) were investigated based on their probability to attach and subsequently detach from a surface of pork fillet. The attachment followed by detachment was measured and modelled for two different...

  9. Attachment of Salmonella spp. to pork meat

    DEFF Research Database (Denmark)

    Hansen, Trine; Riber, Leise; Löfström, Charlotta; Hoorfar, Jeffrey

    Five strains of Salmonella, one wildtype and four knock-out mutants (the prg, flhDC, yhjH and fliC genes) were investigated based on their probability to attach and subsequently detach from a surface of pork fillet. The attachment followed by detachment was measured and modelled for two different...

  10. Attachment Theory Applied to Juvenile Sex Offending.

    Science.gov (United States)

    Goodrow, Kenneth K.; Lim, Mee-Gaik

    1998-01-01

    Attachment theory is applied to identify systemic patterns encouraging juveniles to commit sexual offenses. The role of the helping system in perpetuating offenses is reviewed. The priority of family integrity and the role of professionals in breaking cycles of abuse and repairing earlier destructive emotional attachments are discussed. (EMK)

  11. Attachment patterns and Mentalization in Traumatized Refugees

    DEFF Research Database (Denmark)

    Riber, Karin

    nærværende projekt bestod af de patienter i moderforsøget, som var arabisktalende (N=68). Måleredskaber består i The Adult Attachment Interview, The Reflective Functioning Scale, Revised Adult Attachment Scale, Working Alliance Inventory og Feeling Word Checklist-58. PTSD, depressions- og angstsymptomer...

  12. Study on thermocouple attachment in reflood experiments

    International Nuclear Information System (INIS)

    The method of thermocouple attachment to a heater rods has been studied for surface temperature measurement in reflood experiments. The method used as far in JAERI's reflood experiments had some possibilities of not estimating exactly the quench times. Various attachment method have been tested and some proved to be effective in the respect. (auth.)

  13. Adolescent Self-Esteem, Attachment and Loneliness

    Science.gov (United States)

    Dhal, Anubha; Bhatia, Sangeeta; Sharma, Vidhi; Gupta, Priyanka

    2007-01-01

    Objectives: To assess self-esteem, loneliness and attachment styles among adolescents and examine their association with each other and with age and gender. Method: Adolescents (55 males and 55 females) from a public school in Delhi, aged 10-13 years were administered Coopersmith Self-Esteem Inventory (School Form), Attachment Scale and UCLA…

  14. Attachment and Dependency in Developmental Perspective.

    Science.gov (United States)

    Sroufe, L. Alan; And Others

    1983-01-01

    Distinguishes between attachment (the relationship between infant and caregiver) and dependency (the reliance of the child on adults for nurturance, attention, or assistance). Assesses preschool children with varying attachment histories and suggests that the roots of overdependency lie in the quality of the early infant-caregiver relationship.…

  15. The Importance of Sampling Strategies on AMS Determination of Dykes II. Further Examples from the Kapaa Quarry, Koolau Volcano, Oahu, Hawaii

    Science.gov (United States)

    Mendoza-Borunda, R.; Herrero-Bervera, E.; Canon-Tapia, E.

    2012-12-01

    Recent work has suggested the convenience of dyke sampling along several profiles parallel and perpendicular to its walls to increase the probability of determining a geologically significant magma flow direction using anisotropy of magnetic susceptibility (AMS) measurements. For this work, we have resampled in great detail some dykes from the Kapaa Quarry, Koolau Volcano in Oahu Hawaii, comparing the results of a more detailed sampling scheme with those obtained previously with a traditional sampling scheme. In addition to the AMS results we will show magnetic properties, including magnetic grain sizes, Curie points and AMS measured at two different frequencies on a new MFK1-FA Spinner Kappabridge. Our results thus far provide further empirical evidence supporting the occurrence of a definite cyclic fabric acquisition during the emplacement of at least some of the dykes. This cyclic behavior can be captured using the new sampling scheme, but might be easily overlooked if the simple, more traditional sampling scheme is used. Consequently, previous claims concerning the advantages of adopting a more complex sampling scheme are justified since this approach can serve to reduce the uncertainty in the interpretation of AMS results.

  16. Attachment to spextrophotometers for measuring scattering patterns

    Energy Technology Data Exchange (ETDEWEB)

    Fsel' son, M.P.; Krikum, A.Z.; Sivyakov, Y.A.; Spivak, R.Y.

    1986-02-01

    The authors have developed a simple attachment to the Shimadsu MPS 50L spectrophotometer for measuring scattering patterns. The attachment is mounted directly at the cuvette section of the spectrophotometer. The radiation detector of the attachment is formed by an FR1-4 photoresistor disposed on the vertical section of a gamma-shaped bar adapted to be inclined by plus or minus 90 degrees with respect to the direction of the radiation beam. When the attachment is used, its radiation detector is connected into the measuring circuit of the spectrophotometer in place of the spectrophotometer's detector. When the spectrophotometer alone is used the detector of the attachment is moved out of the beam and the detector of the spectrophotometer proper is inserted into the measuring circuit.

  17. The Antimicrobial Activity of Porphyrin Attached Polymers

    Science.gov (United States)

    Thompson, Lesley

    2008-03-01

    We are interested in testing the antimicrobial activity of a porphyrin that is attached to a polymer. The porphyrin (5-(4-carboxyphenyl)-10,15,20-tris-(4-pryridyl)) was synthesized from methyl 4-formyl benzoate, 4-pyridinecarboxaldehyde, and pyrrole and attached to a copolymer of polystyrene/poly(vinyl benzyl chloride), which was synthesized by free radical polymerization. The antimicrobial activity of the polymer-attached porphyrin was then determined for gram-negative E. Coli grown to 0.80 OD. In this procedure, glass slides were coated with polymer-attached porphyrin via dip-coating, and the E. Coli bacteria were plated in Luria Broth media. The plates were subsequently exposed to light overnight before they were incubated as porphyrins act as photo-sensitizers when irradiated with light. The polymer-attached porphyrin did exhibit antimicrobial activity and parameters that affect its efficiency will be discussed.

  18. Attachment to groups: theory and measurement.

    Science.gov (United States)

    Smith, E R; Murphy, J; Coats, S

    1999-07-01

    Aspects of people's identification with groups may be understood by borrowing theoretical ideas and measurement strategies from research on attachment in close relationships. People have mental models of the self as a group member and of groups as sources of identity and esteem. These models affect thoughts, emotions, and behaviors related to group membership. Three studies show that two dimensions of attachment to groups, attachment anxiety and avoidance, can be assessed with good reliability, validity, and over-time stability. These factors are distinct from relationship attachment and from other measures of group identification. Group attachment predicts several important outcomes, including emotions concerning the group, time and activities shared with a group, social support, collective self-esteem, and ways of resolving conflict. This conceptualization provides new insights into the nature of people's psychological ties to groups. PMID:10434410

  19. Continuous monitoring of bacterial attachment

    Science.gov (United States)

    Koeing, D. W.; Mishra, S. K.; Pierson, D. L.

    1994-01-01

    A major concern with the Space Station Freedom (SSF) water supply system is the control of longterm microbial contamination and biofilm development in the water storage and distribution systems. These biofilms have the potential for harboring pathogens as well as microbial strains containing resistance factors that could negatively influence crew health. The proposed means for disinfecting the water system on SSF (iodine) may encourage the selection of resistant strains. In fact, biofilm bacteria were observed in water lines from the Space Shuttle Columbia (OV-102); therefore, an alternative remediation method is required to disinfect spacecraft water lines. A thorough understanding of colonization events and the physiological parameters that will influence bacteria adhesion is required. The limiting factor for development of this technology is the ability to continuously monitor adhesion events and the effects of biocides on sessile bacteria. Methods were developed to allow bacterial adhesion and subsequent biocidal treatment to be monitored continuously. This technique couples automated image analysis with a continuous flow of a bacterial suspension through an optical flow cell. A strain of Pseudomonas cepacia isolated from the water supply of the Space Shuttle Discovery (OV-103) during STS-39 was grown in a nitrogen-limited continuous culture. This culture was challenged continuously with iodine during growth, and the adhesion characteristics of this strain was measure with regard to flow rate. Various biocides (ozone, hypochlorite, and iodine) were added to the flow stream to evaluate how well each chemical removed the bacteria. After biocide treatment, a fresh bacterial suspension was introduced into the flow cell, and the attachment rate was evaluated on the previously treated surface. This secondary fouling was again treated with biocide to determine the efficacy of multiple batch chemical treatments in removing biofilm.

  20. Individual differences in infant-mother attachment at twelve and eighteen months: stability and change in families under stress.

    Science.gov (United States)

    Vaughn, B; Egeland, B; Sroufe, L A; Waters, E

    1979-12-01

    100 economically disadvantaged mothers and their infants were observed in the Ainsworth and Wittig "strange situation" at 12 and 18 months. Infants were classified as secure, anxiously attached/avoidant, or anxiously attached/resistant. In addition, mothers reported occurrence of stressful events related to the stability of the caretaking environment during the 12--18 month period by completing a 44-item checklist concerning work, finances, family, neighbors, health, etc. 62 infants were assigned to the same attachment classification at both 12 and 18 months (p less than .01). Despite this stability, significantly more infants changes classification than in a recent study of stable middle-class families. With the present sample, anxious attachment was associated with less stable caretaking environments than secure attachment; change from secure to anxious attachment was associated with higher stressful-event scores than stable secure attachment. PMID:535447

  1. The relationship between attachment styles and internalizing or externalizing symptoms in clinical and nonclinical adolescents

    Directory of Open Access Journals (Sweden)

    Fernando Lacasa

    2015-05-01

    Full Text Available Studies regarding the relationship between attachment and psychopathology during adolescence have been performed separately for clinical and nonclinical adolescents and have used different assessment measures, which together might produce a methodological bias that increases the association between attachment and psychopathology. With the aim of avoiding this bias, the present study used identical measures to explore the relationship between attachment styles and internalizing or externalizing symptoms in clinical and nonclinical samples of adolescents. The sample consisted of 258 adolescents, 129 clinical and 129 nonclinical, aged between 14 and 18 years. The adolescents in each sample were matched for age, gender, and socioeconomic status. Attachment was assessed using the CaMir Q-sort, and psychopathological symptoms were assessed by means of the Youth Self Report (YSR. The relationships between attachment and psychopathology were similar for clinical and nonclinical adolescents. A preoccupied attachment style predicted internalizing and externalizing symptoms, somatic complaints, anxious-fearful behavior, verbal aggression, attention-seeking behavior, and thinking problems. Compared to previous studies, this research has made it possible to identify broader, stronger, and more specific associations between preoccupied attachment style and psychopathological symptoms in adolescents.

  2. Impaired bacterial attachment to light activated Ni-Ti alloy

    International Nuclear Information System (INIS)

    Ni-Ti alloy due to its unique mechanical properties, is used for many types of implants. Failure of these implants can be attributed to many different factors; however infections are a common problem. In this paper, the attachment of the bacteria, Staphylococcus aureus, to the Ni-Ti surface modified by a range of processes with and without of light activation (used to elicit antimicrobial properties of materials) was assessed and related to different surface characteristics. Before the light activation the number of bacterial colony forming units was the greatest for the samples thermally oxidised at 600 deg. C. This sample and the spark oxidised samples showed the highest photocatalytic activity but only the thermally oxidised samples at 600 deg. C showed a significant drop of S. aureus attachment. The findings in this study indicate that light activation and treating samples at 600 deg. C is a promising method for Ni-Ti implant applications with inherent antimicrobial properties. Light activation was shown to be an effective way to trigger photocatalytic reactions on samples covered with relatively thick titanium dioxide via accumulation of photons in the surface and a possible increase in defects which may result in free oxygen. Moreover, light activation caused an increase in the total surface energy.

  3. Impaired bacterial attachment to light activated Ni-Ti alloy

    Energy Technology Data Exchange (ETDEWEB)

    Chrzanowski, Wojciech; Valappil, Sabeel P. [UCL Eastman Dental Institute, Division of Biomaterials and Tissue Engineering, 256 Gray' s In Road, WC1X 8LD, London (United Kingdom); Dunnill, Charles W. [University College London, Centre for Materials Chemistry, Chemistry Department, 20 Gordon Street, London, WC1H 0AJ (United Kingdom); Abou Neel, Ensanya A. [UCL Eastman Dental Institute, Division of Biomaterials and Tissue Engineering, 256 Gray' s In Road, WC1X 8LD, London (United Kingdom); Lee, Kevin [London Centre for Nanotechnology, 17-19 Gordon Street, London WC1H 0AH (United Kingdom); Parkin, Ivan P. [University College London, Centre for Materials Chemistry, Chemistry Department, 20 Gordon Street, London, WC1H 0AJ (United Kingdom); Wilson, Michael [UCL Eastman Dental Institute, Division of Microbial Diseases, 256 Gray' s In Road, WC1X 8LD, London (United Kingdom); Armitage, David A. [De Montfort University, Leicester School of Pharmacy, The Gateway, Leicester, LE1 9BH (United Kingdom); Knowles, Jonathan C., E-mail: j.knowles@eastman.ucl.ac.uk [UCL Eastman Dental Institute, Division of Biomaterials and Tissue Engineering, 256 Gray' s In Road, WC1X 8LD, London (United Kingdom)

    2010-01-30

    Ni-Ti alloy due to its unique mechanical properties, is used for many types of implants. Failure of these implants can be attributed to many different factors; however infections are a common problem. In this paper, the attachment of the bacteria, Staphylococcus aureus, to the Ni-Ti surface modified by a range of processes with and without of light activation (used to elicit antimicrobial properties of materials) was assessed and related to different surface characteristics. Before the light activation the number of bacterial colony forming units was the greatest for the samples thermally oxidised at 600 deg. C. This sample and the spark oxidised samples showed the highest photocatalytic activity but only the thermally oxidised samples at 600 deg. C showed a significant drop of S. aureus attachment. The findings in this study indicate that light activation and treating samples at 600 deg. C is a promising method for Ni-Ti implant applications with inherent antimicrobial properties. Light activation was shown to be an effective way to trigger photocatalytic reactions on samples covered with relatively thick titanium dioxide via accumulation of photons in the surface and a possible increase in defects which may result in free oxygen. Moreover, light activation caused an increase in the total surface energy.

  4. Individual Differences in Work-Related Well-Being: The Role of Attachment Style

    Directory of Open Access Journals (Sweden)

    Tiziana Lanciano

    2014-11-01

    Full Text Available Integrating theories of adult attachment and well-being at the workplace, the present study tested the role of attachment style in predicting work-related well-being in terms of job satisfaction and job involvement, over and above dispositional trait measures (emotional traits and work-related traits. A sample of workers took part in a correlational study that explored the relationships among a adult attachment, b emotional traits, c work-related traits, and d work-related well-being indices. The results showed that both secure and anxious attachment style explained workers’ job involvement, whereas the secure and avoidant attachment styles explained workers’ job satisfaction. The current findings thus confirm and expand the literature's emphasis on studying the variables and processes that underlie people's mental health in the work setting, and have implications for assessing and promoting well-being in the workplace.

  5. The Brief Accessibility, Responsiveness, and Engagement Scale: A Tool for Measuring Attachment Behaviors in Clinical Couples.

    Science.gov (United States)

    Sandberg, Jonathan G; Novak, Joshua R; Davis, Stephanie Y; Busby, Dean M

    2016-01-01

    Measuring attachment behaviors is relevant to creating secure couple relationships. This article seeks to test and examine the reliability and validity of the Brief Accessibility, Responsiveness, and Engagement (BARE) Scale-a practical measure of couple attachment-in a clinical sample. Couples took the BARE and other assessments measuring relationship functioning (self and partner reports of relationship satisfaction, relationship stability, positive and negative communication, and attachment styles). Results suggest that the BARE appears to be a reliable and valid tool for assessing couple attachment and can accurately predict and classify whether the couples belong in the clinical or nonclinical group, as well as their level of relationship satisfaction. Results also indicate attachment behaviors are related to relationship outcomes. PMID:26748730

  6. Mastery matters most: How mastery and positive relations link attachment avoidance and anxiety to negative emotions.

    Science.gov (United States)

    Paech, Juliane; Schindler, Ines; Fagundes, Christopher P

    2016-08-01

    Attachment avoidance and anxiety are associated with negative emotions. However, the mechanisms underlying these associations are not fully understood. We investigated environmental mastery and positive relations with others as two mechanisms behind the attachment-emotion link in a sample of 343 adults. As predicted, attachment avoidance and anxiety were related to greater fear, hostility, envy and depression through lower mastery. Contrary to our hypothesis, positive relations mediated only the attachment-depression link. In addition, by adopting a moderated mediation approach, we were able to show that mastery mattered most for individuals high on avoidance: The indirect effect of avoidance through lack of mastery on fear, hostility and depression (but not on envy) increased with higher avoidance scores. Contrary to our predictions, poor relationships did not matter more as sources of negative emotions as anxiety increased. These findings underscore that the emotional life of avoidantly attached individuals is especially jeopardised by poor mastery. PMID:26079543

  7. Effects of attachment and rearing behavior on anxiety in normal developing youth

    DEFF Research Database (Denmark)

    Breinholst, Sonja; Esbjørn, Barbara Hoff; Reinholdt-Dunne, Marie Louise

    2015-01-01

    A few studies have examined the relative contribution of insecure attachment and negative parental rearing behaviors on childhood anxiety, but none have examined if insecure attachment mediates the association between negative parental rearing behavior and anxiety. The present study investigated...... the direct, as well as the indirect, relation between attachment to parents, parental rearing behaviors and anxiety symptoms in a sample of 1134 normal developing children and adolescent. Attachment relation was measured by the Security Scale (SEC), negative parental rearing behavior was measured by...... the Rearing Behavior Questionnaire (RBQ), and anxiety was assessed using the Screen for Anxiety Related Emotional Disorders-Revised (SCARED-R). We found, in accordance with previous research, that insecure attachment, maternal rejection and overprotection, each accounted for a significant proportion...

  8. Attachment relationships of preschool-aged children of mothers with HIV and HIV-related psychosis.

    Science.gov (United States)

    Spies, R; Sterkenburg, P S; van Rensburg, E; Schuengel, C

    2016-10-01

    Children from mothers with HIV-related psychosis are frequently raised in challenging contexts, yet the extent to which these children grow up in insecure or disordered attachment relationships is unknown. Using the Strange Situation Procedure the distribution of attachment relationships of children from mothers with HIV and psychosis (n = 45) was compared with children from mothers with HIV without psychosis (n = 41). No significant differences in the distributions were found between the two groups and attachment was not associated with specific psychotic symptomatology. Security of attachment was associated with more people providing the mother with emotional support, but only in the psychosis group. Disordered attachment (24%) was more often found in the total sample than in studies with other normal and high risk populations. Recommendations were made for future research about factors facilitating resilience in the children and on interventions increasing emotional support for affected mothers. PMID:27219712

  9. Slides with no attached paper

    International Nuclear Information System (INIS)

    This document brings together the different presentations (slides) given at the workshop but with no attached paper. These slides refer to the following presentations: - Presentation of ITN (Instituto Tecnologico e Nuclear); - Minor Actinide Partitioning (Dominique Warin); - Transmutation (Janne Wallenius); - Radioactive Waste Management, IGD-TP (Gerald Ouzounian); - Present status of the Swedish nuclear waste management programme (Peter Wikberg); - The U.S. Fuel Cycle Research and Development Program - Separations Research and Development (Terry Todd); - Strategies and national programs of closed fuel cycles - Russian Expert Vision (Mikhael Kormilitsyn) - Extraction Studies Of Potential Solvent Formulations For The GANEX Process (Fiona MacLachlan); - Investigations of The Fundamental Chemistry of the TALSPEAK Process (Ken Nash); - Extraction Separation of Trivalent Minor Actinides and Lanthanides by Hexa-dentate Nitrogen-donor Extractant, TPEN, and its Analogs (Kenji Takeshita); - Fluorinated Diluents for HLW Processing - technological point of view (Vasiliy Babain); - Extraction properties of some new pyridine molecules and search for better diluents (Irena Spendlikova); - Kinetics of extraction of Eu3+ ion by TODGA and CyMe4-BTBP studied using the RMC technique (Trong Hung Vu); - Redox Chemistry of Neptunium in Solutions of Nitric Acid (Alena Paulenova); - NMR applied to actinide ions and their complexes. In search of covalency effects (Geoffrey Vidick); - Towards 'Stability Rules' for Radiolysis of bis-DGA compounds (Ana Nunez); - Pyroprocess Research Activities at IGCAR, Kalpakkam, India (K. Nagarajan); - Critical issues of nuclear energy systems employing molten salt fluorides: from ISTC No. 1606 to No. 3749 (1. year of project activity) and MARS/EVOL cooperation (Victor Ignatiev); - Conversion processes: Internal Gelation and the Sphere-pac concept (Manuel Pouchon); - A Combined Nuclear Technology and Nuclear Chemistry Master. A Unique Initiative

  10. Fabrication and testing of ceramic UO2 fuel - I-III. Part II, Fabrication of sintered pressed samples UO2 (Final report)

    International Nuclear Information System (INIS)

    Procedure for fabrication of sintered ceramic UO2 pellets was developed in the Department of reactor materials. The tasks described in this report deal with design and construction of laboratory equipment for treatment of ceramic materials, and fabrication of UO2 pellets. The procedure was based on cold pressing of appropriately prepared powder and sintering of the of thus obtained pressed samples

  11. Attachment typologies and posttraumatic stress disorder (PTSD, depression and anxiety: a latent profile analysis approach

    Directory of Open Access Journals (Sweden)

    Cherie Armour

    2011-12-01

    Full Text Available Bartholomew (1990 proposed a four category adult attachment model based on Bowlby's (1973 proposal that attachment is underpinned by an individual's view of the self and others. Previous cluster analytic techniques have identified four and two attachment styles based on the Revised Adult Attachment Scale (RAAS. In addition, attachment styles have been proposed to meditate the association between stressful life events and subsequent psychiatric status. The current study aimed to empirically test the attachment typology proposed by Collins and Read (1990. Specifically, LPA was used to determine if the proposed four styles can be derived from scores on the dimensions of closeness/dependency and anxiety. In addition, we aimed to test if the resultant attachment styles predicted the severity of psychopathology in response to a whiplash trauma. A large sample of Danish trauma victims (N=1577 participated. A Latent Profile Analysis was conducted, using Mplus 5.1, on scores from the RAAS scale to ascertain if there were underlying homogeneous attachment classes/subgroups. Class membership was used in a series of one-way ANOVA tests to determine if classes were significantly different in terms of mean scores on measures of psychopathology. The three class solution was considered optimal. Class one was termed Fearful (18.6%, Class two Preoccupied (34.5%, and Class three Secure (46.9%. The secure class evidenced significantly lower mean scores on PTSD, depression, and anxiety measures compared to other classes, whereas the fearful class evidenced significantly higher mean scores compared to other classes. The results demonstrated evidence of three discrete classes of attachment styles, which were labelled secure, preoccupied, and fearful. This is in contrast to previous cluster analytic techniques which have identified four and two attachment styles based on the RAAS.In addition, Securely attached individuals display lower levels of psychopathology post

  12. Nuclear reactor fuel rod attachment system

    International Nuclear Information System (INIS)

    The invention involves a technique to quickly, inexpensively and rigidly attach a nuclear reactor fuel rod to a support member. The invention also allows for the repeated non-destructive removal and replacement of the fuel rod. The proposed fuel rod and support member attachment and removal system consists of a locking cap fastened to the fuel rod and a locking strip fastened to the support member or vice versa. The locking cap has two or more opposing fingers shaped to form a socket. The fingers spring back when moved apart and released. The locking strip has an extension shaped to rigidly attach to the socket's body portion

  13. The fourth pattern of attachment: Disorganized / disoriented

    Directory of Open Access Journals (Sweden)

    Zlatka Cugmas

    2003-09-01

    Full Text Available On the basis of the study of recent scientific literature about the development of attachment behavior, the author answers the following questions about: the behavior children categorized as Disorganized/disorientated or Controlling in the procedure of the Strange situation; the life circumstances, in which these children live; the reasons for lack of balanced strategies of attachment and characteristics of their general manner of adaptation. The author finds the characteristics of the mothers' (insensitivity to be significantly influential for the emergence of the fourth pattern of attachment. These children are heterogeneous regarding adaptation in general. Professional help preceding negative consequences for their socioemotional development is neccesary.

  14. Insecure Attachment, Dysfunctional Attitudes, and Low Self-Esteem Predicting Prospective Symptoms of Depression and Anxiety During Adolescence

    OpenAIRE

    Lee, Adabel; Hankin, Benjamin L.

    2009-01-01

    This study extends the existing adult literature on insecure attachment as a predictor of depression and anxiety by examining these pathways in a sample of adolescents. In addition, dysfunctional attitudes and low self-esteem were tested as mediators of the association between insecure attachment and symptoms of depression and anxiety. Youth (N =350; 6th–10th graders) completed self-report measures of attachment, dysfunctional attitudes, self-esteem, and symptoms of depression and anxiety in ...

  15. The relationship between women’s attachment style and perinatal mood disturbance: implications for screening and treatment

    OpenAIRE

    Monk, Catherine; Leight, Kristin L.; Fang, Yixin

    2008-01-01

    To investigate women’s attachment style in relation to risk for pregnancy-specific distress and perinatal depression. During the 2nd trimester, 186 women were evaluated for Axis I psychiatric disorders. In the 3rd trimester they self-reported: attachment style, pregnancy experience, current life stress, and symptoms of depression and anxiety. At 4 months post partum, a sub-sample of them (n=56) repeated the self-report questionnaires. Wariness of attachments (high on fear dimension) was assoc...

  16. IMPACT OF FATHERS’ ALCOHOLISM AND ASSOCIATED RISK FACTORS ON PARENT–INFANT ATTACHMENT STABILITY FROM 12 TO 18 MONTHS

    OpenAIRE

    EDWARDS, ELLEN P.; Eiden, Rina D.; Leonard, Kenneth E.

    2004-01-01

    This study examined short-term attachment stability and sought to identify predictors of stability and change within a sample characterized by fathers’ alcoholism. Results suggest moderate stability of attachment classifications (60% for mothers, 53% for fathers) from 12 to 18 months. Higher paternal and maternal alcohol symptoms, maternal depression, and maternal antisocial behavior were found in families with stable insecure mother–infant attachment compared to those who were stable secure....

  17. Attachment style impacts behavior and early oculomotor response to positive, but not negative, pictures.

    Science.gov (United States)

    Silva, Catarina; Chaminade, Thierry; David, Da Fonseca; Santos, Andreia; Esteves, Francisco; Soares, Isabel; Deruelle, Christine

    2015-06-01

    The present study investigated whether oculomotor behavior is influenced by attachment styles. The Relationship Scales Questionnaire was used to assess attachment styles of forty-eight voluntary university students and to classify them into attachment groups (secure, preoccupied, fearful, and dismissing). Eye-tracking was recorded while participants engaged in a 3-seconds free visual exploration of stimuli presenting either a positive or a negative picture together with a neutral picture, all depicting social interactions. The task consisted in identifying whether the two pictures depicted the same emotion. Results showed that the processing of negative pictures was impermeable to attachment style, while the processing of positive pictures was significantly influenced by individual differences in insecure attachment. The groups highly avoidant regarding to attachment (dismissing and fearful) showed reduced accuracy, suggesting a higher threshold for recognizing positive emotions compared to the secure group. The groups with higher attachment anxiety (preoccupied and fearful) showed differences in automatic capture of attention, in particular an increased delay preceding the first fixation to a picture of positive emotional valence. Despite lenient statistical thresholds induced by the limited sample size of some groups (p emotions is affected by attachment styles. These results are discussed within a broader evolutionary framework. PMID:25693911

  18. Adult attachment, emotion dysregulation, and symptoms of depression and generalized anxiety disorder.

    Science.gov (United States)

    Marganska, Anna; Gallagher, Michelle; Miranda, Regina

    2013-01-01

    Differences in attachment style have been linked to both emotion regulation and psychological functioning, but the emotion regulatory mechanism through which attachment style might impact symptoms of depression and anxiety is unclear. The present study examined the explanatory role of emotion dysregulation in the relation between adult attachment style and symptoms of depression and generalized anxiety disorder (GAD) in a sample of 284 adults. Secure attachment was associated with lower depression and GAD symptoms and lower emotion dysregulation, whereas insecure attachment styles were generally associated with higher depression and GAD scores and higher emotion dysregulation. Perceived inability to generate effective emotion regulation strategies mediated the relation between insecure attachment and both depression and GAD symptoms. Nonacceptance of negative emotions and inability to control impulsive behaviors emerged as additional mediators of the relation between insecure attachment styles and GAD symptoms. The differential contribution of attachment style and emotion regulation to the prediction of depression and GAD symptoms may reflect differences in vulnerability to depression and GAD. PMID:23330631

  19. Changes in Relationship-Specific Attachment in Emotionally Focused Couple Therapy.

    Science.gov (United States)

    Burgess Moser, Melissa; Johnson, Susan M; Dalgleish, Tracy L; Lafontaine, Marie-France; Wiebe, Stephanie A; Tasca, Giorgio A

    2016-04-01

    Emotionally focused couple therapy (EFT; Johnson, The practice of emotionally focused couple therapy (1st/2nd edition). Brunner-Routledge, New York, 2004) is an effective treatment of relationship distress (Johnson et al., Clinical Psychology: Science and Practice, 1999; 6, 67). However, less is known about EFT's impact on couples' relationship-specific attachment bond. Using hierarchical linear modeling with a sample of 32 couples, we examined session-by-session changes in couples' relationship-specific attachment anxiety and avoidance and pre- to posttherapy changes in their relationship-specific attachment behaviors. Couples significantly decreased in relationship-specific attachment avoidance, and those who completed a blamer softening significantly decreased in relationship-specific attachment anxiety. Couples' attachment behavior significantly increased toward security. Finally, session-by-session decreases in relationship-specific attachment anxiety and avoidance were significant associated with increases in relationship satisfaction across sessions. These results provide empirical support for the attachment-based assumptions of EFT. Video abstract accessible by clicking here. PMID:26511674

  20. Attachment as a partial mediator of the relationship between emotional abuse and schizotypy.

    Science.gov (United States)

    Goodall, Karen; Rush, Robert; Grünwald, Lisa; Darling, Stephen; Tiliopoulos, Niko

    2015-12-15

    Developmental theories highlight the salience of attachment theory in explaining vulnerability towards psychosis. At the same time there is increasing recognition that psychosis is associated with childhood trauma variables. This study explored the interaction between attachment and several trauma variables in relation to schizotypy levels in a non-clinical sample. 283 non-clinical participants completed online measures of schizotypy, attachment, childhood abuse and neglect. When five types of abuse/neglect were entered into a linear regression analysis emotional abuse was the sole independent predictor of schizotypy. Age, attachment anxiety and avoidance were independent predictors after the effects of emotional abuse were controlled for. The overall model was significant, explaining 34% of the variation in schizotypy. Moderation analysis indicated that the effect of emotional abuse was not conditional upon attachment. Parallel mediation analysis indicated small but significant indirect effects of emotional abuse on schizotypy through attachment avoidance (13%) and attachment anxiety (8%). We conclude that emotional abuse contributes to vulnerability towards psychosis both directly and indirectly through attachment insecurity. PMID:26474661

  1. Attachment styles, emotion regulation, and adjustment in adolescence.

    Science.gov (United States)

    Cooper, M L; Shaver, P R; Collins, N L

    1998-05-01

    Attachment style differences in psychological symptomatology, self-concept, and risky or problem behaviors were examined in a community sample (N = 1,989) of Black and White adolescents, 13 to 19 years old. Overall, secure adolescents were the best-adjusted group, though not necessarily the least likely to engage in risky behaviors. Anxious adolescents were the worst-adjusted group, reporting the poorest self-concepts and the highest levels of symptomatology and risk behaviors. In contrast, avoidant adolescents reported generally high levels of symptomatology and poor self-concepts but similar levels of risk behaviors to those found among secures. Mediation analyses suggested that the observed differences in problem behaviors were at least partially accounted for by the differential experience of distress symptoms (primarily hostility and depression) and by social competence. Finally, patterns of attachment effects were similar across age, gender, and racial groups, with some important exceptions. PMID:9599450

  2. HI emission and absorption in nearby, gas-rich galaxies II. -- sample completion and detection of intervening absorption in NGC 5156

    CERN Document Server

    Reeves, S N; Allison, J R; Koribalski, B S; Curran, S J; Pracy, M B; Phillips, C J; Bignall, H E; Reynolds, C

    2016-01-01

    We present the results of a survey for intervening 21cm HI absorption in a sample of 10 nearby, gas-rich galaxies selected from the HI Parkes All-Sky Survey (HIPASS). This follows the six HIPASS galaxies searched in previous work and completes our full sample. In this paper we searched for absorption along 17 sightlines with impact parameters between 6 and 46 kpc, making one new detection. We also obtained simultaneous HI emission-line data, allowing us to directly relate the absorption-line detection rate to the HI distribution. From this we find the majority of the non-detections in the current sample are because sightline does not intersect the HI disc of the galaxy at sufficiently high column density, but that source structure is also an important factor. The detected absorption-line arises in the galaxy NGC 5156 ($z = 0.01$) at an impact parameter of 19 kpc. The line is deep and narrow with an integrated optical depth of 0.82 km s$^{-1}$. High resolution Australia Telescope Compact Array (ATCA) images at...

  3. The Cool ISM in Elliptical Galaxies. II. Gas Content in the Volume - Limited Sample and Results from the Combined Elliptical and Lenticular Surveys

    CERN Document Server

    Welch, Gary A; Young, Lisa M

    2010-01-01

    We report new observations of atomic and molecular gas in a volume limited sample of elliptical galaxies. Combining the elliptical sample with an earlier and similar lenticular one, we show that cool gas detection rates are very similar among low luminosity E and SO galaxies but are much higher among luminous S0s. Using the combined sample we revisit the correlation between cool gas mass and blue luminosity which emerged from our lenticular survey, finding strong support for previous claims that the molecular gas in ellipticals and lenticulars has different origins. Unexpectedly, however, and contrary to earlier claims, the same is not true for atomic gas. We speculate that both the AGN feedback and merger paradigms might offer explanations for differences in detection rates, and might also point towards an understanding of why the two gas phases could follow different evolutionary paths in Es and S0s. Finally we present a new and puzzling discovery concerning the global mix of atomic and molecular gas in ear...

  4. Mg II ABSORPTION SYSTEMS WITH W0 ≥ 0.1 A FOR A RADIO SELECTED SAMPLE OF 77 QUASI-STELLAR OBJECTS AND THEIR ASSOCIATED MAGNETIC FIELDS AT HIGH REDSHIFT

    International Nuclear Information System (INIS)

    We present a catalog of Mg II absorption systems obtained from high-resolution Ultraviolet and Visual Echelle Spectrograph/VLT data of 77 quasi-stellar objects in the redshift range 0.6 0 ≥ 0.1 A. The statistical properties of our sample are found to be in agreement with those from the previous work in the literature. However, we point out that the previously observed increase with redshift of ∂N/∂z for weak absorbers pertains exclusively to very weak absorbers with W0 0 in the range 0.1-0.3 A actually decreases with redshift, similar to the case of strong absorbers. We then use this catalog to extend our earlier analysis of the links between the Faraday rotation measure (RM) of the quasars and the presence of intervening Mg II absorbing systems in their spectra. In contrast to the case with strong Mg II absorption systems (W0 > 0.3 A), the weaker systems do not contribute significantly to the observed RM of the background quasars. This is possibly due to the higher impact parameters of the weak systems compared to strong ones, suggesting that the high column density magnetized material that is responsible for the Faraday rotation is located within about 50 kpc of the galaxies. Finally, we show that this result also rules out the possibility that some unexpected secondary correlation between the quasar redshift and its intrinsic RM is responsible for the association of high RM and strong intervening Mg II absorption that we have presented elsewhere, since this would have produced an equal effect for the weak absorption line systems, which exhibit a very similar distribution of quasar redshifts.

  5. Highly sensitive and specific determination of mercury(II) ion in water, food and cosmetic samples with an ELISA based on a novel monoclonal antibody

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Yuzhen; Li, Yuan [Sichuan University, College of Chemistry, Chengdu (China); Yang, Hong [Soochow University, College of Pharmacy, Suzhou (China); Pschenitza, Michael; Niessner, Reinhard; Knopp, Dietmar [Technical University Munich, Chair for Analytical Chemistry, Institute of Hydrochemistry and Chemical Balneology, Munich (Germany); Deng, Anping [Sichuan University, College of Chemistry, Chengdu (China); Soochow University, College of Chemistry, Chemical Engineering and Materials Science, Suzhou (China)

    2012-07-15

    Mercury is one of the most toxic heavy metals present in the environment. In this study, a highly sensitive and specific monoclonal antibody (mAb)-based indirect competitive enzyme-linked immunosorbent assay (ELISA) for the determination of Hg{sup 2+} was developed. A new bifunctional ligand, 6-mercaptonicotinic acid (MNA), which contains a pyridine ring bearing a carboxylic group and a mercapto group, was selected for the preparation of immunogen. After immunization of mice and performing the hybridoma technique, the obtained mAb was characterized for its binding affinity and selectivity for Hg{sup 2+}. Based on this novel mAb, an ELISA was established. At optimal experimental conditions, the standard curve of the ELISA for Hg{sup 2+} was constructed in concentration range of 0.1-100 ng mL{sup -1}. The values of IC{sub 50} and LOD of the assay were found to be 1.12 and 0.08 ng mL{sup -1}. The cross-reactivity was lower than 2 % with MNA, CH{sub 3}Hg, and CH{sub 3}Hg-MNA and was 11.5 % and 4.4 % for Hg{sup +} and Au{sup 3+}, respectively. No cross-reactivity was found with other metal ions such as Cu{sup 2+}, Sn{sup 2+}, Ni{sup 2+}, Mn{sup 2+}, Pb{sup 2+}, Zn{sup 2+}, Cd{sup 2+}, Fe{sup 2+}, Co{sup 2+}, Mg{sup 2+}, Ca{sup 2+}, and anions such as Cl{sup -}, NO{sub 3} {sup -}, NO{sub 2} {sup -}, HCO{sub 3} {sup -}, F{sup -}, and SO{sub 4} {sup 2-}, indicating that the assay displays not only high sensitivity but also high selectivity. Different kinds of samples including water, milk, green vegetable, kelp, facial cleanser, and night cream were spiked with Hg{sup 2+} and the extracts were analyzed by ELISA. Acceptable recovery rates of 80.0-113.0 % and coefficients of variation of 1.9-18.6 % were obtained. A linear relationship between ELISA and cold-vapor atomic fluorescence spectroscopy (CV-AFS) as indicated by a correlation coefficient of 0.97 for liquid samples (water samples) and 0.98 for other samples was obtained. The proposed mAb-based ELISA provides a

  6. Cryogenic devices attached to electron accelerators

    International Nuclear Information System (INIS)

    The cryoeenic equipement attached to electron accelerators used at the CEN.G for fundamental research on point defects in solids is presented and some of their essential technical characteristics are briefly described

  7. Attachment and the Roots of Competence.

    Science.gov (United States)

    Sroufe, L. Alan

    1981-01-01

    Describes research with 12- to 18-month-old infants (N=108) determining whether the quality of an infant's attachment to his/her primary caregiver could predict the nature of his/her emerging personality. (CS)

  8. Attachment of Gold Nanoparticles to Carbon Nanotubes

    Institute of Scientific and Technical Information of China (English)

    Xi Cheng MA; Ning LUN; Shu Lin WEN

    2005-01-01

    Carbon nanotubes were initially chemically modified with an H2SO4-HNO3 treatment,and subsequently activated with Pd-Sn catalytic nuclei via a one-step activation approach. These activated nanotubes were used as precursors for obtaining gold nanoparticles-attached nanotubes via simple electroless plating. This approach provides an efficient method for attachment of metal nanostructures to carbon nanotubes. Such novel hybrid nanostructures are attractive for many applications.

  9. Attachment and Personality Disorders: A Short Review

    OpenAIRE

    Lorenzini, N.; Fonagy, P

    2013-01-01

    Attachment theory is a biopsychosocial model referring to a person’s characteristic ways of relating in close relationships, such as with parents, children, and romantic partners. These ways of relating are learned during early infancy and mold subsequent intimate relationships. An adult who is securely attached has internalized a reliable relationship to his/her caregivers in infancy, and thus is capable of adapting to different social contexts and, more importantly, of maintaining an adequa...

  10. Attachment an interpersonal processes in hearing voices

    OpenAIRE

    Robson, G. E.

    2012-01-01

    Aims: This study investigated the link between attachment anxiety/avoidance, interpersonal aspects of the voice relationship, and distress whilst considering the impact of beliefs about voices and paranoia. Method: A cross sectional correlational method was employed and participants were recruited mainly via online forums for people who hear voices. 44 participants who heard voices completed a number of self-report measures tapping attachment, interpersonal processes in the voice relationship...

  11. Application of a new version of GA-RBF neural network for simultaneous spectrophotometric determination of Zn(II), Fe(II), Co(II) and Cu(II) in real samples: An exploratory study of their complexation abilities toward MTB.

    Science.gov (United States)

    Rasouli, Zolaikha; Hassanzadeh, Zeinabe; Ghavami, Raouf

    2016-11-01

    The current study for the first time is devoted to the application of whole space genetic algorithm-radial basis function network (wsGA-RBFN) method to determine the content micro minerals of Zn(2+), Fe(2+), Co(2+) and Cu(2+) based on their complexes formation with methylthymol blue (MTB) spectrophotometrically in various pharmaceutical products and vegetable samples. Advantage of wsGA-RBFN compared to GA-RBFN is that centers can be located in any point of the samples spaces. Initially, the parameters controlling behavior of the system were investigated and optimum conditions were selected. Then, an exploratory analysis of complex systems was carried out by chemometrics approaches such as SVD, EFA, MCR-ALS and RAFA. The optimal parameters and conditions for constructing the proposed model of wsGA-RBFN were obtained from processing the data set of synthetic samples. Finally, wsGA-RBFN was successfully applied to the simultaneous determination of Zn(2+), Fe(2+), Co(2+) and Cu(2+) in tomato, white cabbage, red cabbage and lettuce and pharmaceutical products included iron, zinc, multi complete and B12 ampoule. PMID:27591591

  12. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean, Philippine Sea and South Pacific Ocean from 2005-07-08 to 2005-07-28 (NODC Accession 0112288)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112288 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean, Philippine...

  13. Dissolved inorganic carbon, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the Ryofu Maru II in the Bismarck Sea, North Pacific Ocean and others from 1994-07-07 to 1994-08-25 (NODC Accession 0115017)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0115017 includes chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the Bismarck Sea, North Pacific Ocean,...

  14. Partial pressure (or fugacity) of carbon dioxide, dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the ATLANTIS II in the North Atlantic Ocean from 1989-04-20 to 1989-06-06 (NODC Accession 0113522)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0113522 includes chemical, discrete sample, physical and profile data collected from ATLANTIS II in the North Atlantic Ocean from 1989-04-20 to...

  15. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the East China Sea (Tung Hai), North Pacific Ocean and Philippine Sea from 2004-10-21 to 2004-11-09 (NODC Accession 0112286)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112286 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the East China Sea (Tung Hai),...

  16. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean, Philippine Sea and South Pacific Ocean from 2004-01-14 to 2004-02-26 (NODC Accession 0112283)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112283 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean, Philippine...

  17. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean and Philippine Sea from 2005-10-21 to 2005-11-08 (NODC Accession 0112289)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112289 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean and...

  18. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean, Philippine Sea and South Pacific Ocean from 2005-01-14 to 2005-02-25 (NODC Accession 0112287)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112287 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean, Philippine...

  19. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean, Philippine Sea and South Pacific Ocean from 2003-07-14 to 2003-08-01 (NODC Accession 0112282)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112282 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean, Philippine...

  20. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean and South Pacific Ocean from 2007-06-06 to 2007-07-24 (NODC Accession 0112295)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112295 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean and South...

  1. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the Ryofu Maru II in the North Pacific Ocean from 2005-06-15 to 2005-07-04 (NODC Accession 0109905)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0109905 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean from...

  2. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean and Philippine Sea from 1997-01-21 to 1997-02-09 (NODC Accession 0112277)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112277 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean and...

  3. Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from the Ryofu Maru II in the North Pacific Ocean, Philippine Sea and South Pacific Ocean from 2004-07-04 to 2004-07-21 (NODC Accession 0112285)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0112285 includes biological, chemical, discrete sample, physical and profile data collected from Ryofu Maru II in the North Pacific Ocean, Philippine...

  4. God as an Attachment Figure : A Case Study of the God Attachment Language and God Concepts of Anxiously Attached Christian Youths in South Africa

    NARCIS (Netherlands)

    Counted, Agina Victor

    2016-01-01

    This study examines the role of the Christian God as an attachment figure, using the attachment language criteria of a strong and enduring affectionate bond. Respondents were 15 anxiously attached Christian youths, purposefully selected for in-depth interviews to explore their God attachment languag

  5. Herschel far-infrared photometry of the Swift Burst Alert Telescope active galactic nuclei sample of the local universe - II. SPIRE observations

    Science.gov (United States)

    Shimizu, T. Taro; Meléndez, Marcio; Mushotzky, Richard F.; Koss, Michael J.; Barger, Amy J.; Cowie, Lennox L.

    2016-03-01

    We present far-infrared (FIR) and submillimetre photometry from the Herschel Space Observatory's Spectral and Photometric Imaging Receiver (SPIRE) for 313 nearby (z selected AGN from the 58 month Swift Burst Alert Telescope (BAT) catalogue, the result of an all-sky survey in the 14-195 keV energy band, allowing for a reduction in AGN selection effects due to obscuration and host galaxy contamination. We find 46 per cent (143/313) of our sample is detected at all three wavebands and combined with our Photoconductor Array Camera and Spectrometer (PACS) observations represents the most complete FIR spectral energy distributions of local, moderate-luminosity AGN. We find no correlation among the 250, 350, and 500 μm luminosities with 14-195 keV luminosity, indicating the bulk of the FIR emission is not related to the AGN. However, Seyfert 1s do show a very weak correlation with X-ray luminosity compared to Seyfert 2s and we discuss possible explanations. We compare the SPIRE colours (F250/F350 and F350/F500) to a sample of normal star-forming galaxies, finding the two samples are statistically similar, especially after matching in stellar mass. But a colour-colour plot reveals a fraction of the Herschel-BAT AGN are displaced from the normal star-forming galaxies due to excess 500 μm emission (E500). Our analysis shows E500 is strongly correlated with the 14-195 keV luminosity and 3.4/4.6 μm flux ratio, evidence the excess is related to the AGN. We speculate these sources are experiencing millimetre excess emission originating in the corona of the accretion disc.

  6. Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types

    Science.gov (United States)

    Skrzypek, N.; Warren, S. J.; Faherty, J. K.

    2016-04-01

    We present a homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 (of which 998 are new), from an effective area of 3070 deg2, classified by the photo-type method to an accuracy of one spectral sub-type using izYJHKW1W2 photometry from SDSS+UKIDSS+WISE. Other than a small bias in the early L types, the sample is shown to be effectively complete to the magnitude limit, for all spectral types L0 to T8. The nature of the bias is an incompleteness estimated at 3% because peculiar blue L dwarfs of type L4 and earlier are classified late M. There is a corresponding overcompleteness because peculiar red (likely young) late M dwarfs are classified early L. Contamination of the sample is confirmed to be small: so far spectroscopy has been obtained for 19 sources in the catalogue and all are confirmed to be ultracool dwarfs. We provide coordinates and izYJHKW1W2 photometry of all sources. We identify an apparent discontinuity, Δm ~ 0.4 mag, in the Y - K colour between spectral types L7 and L8. We present near-infrared spectra of nine sources identified by photo-type as peculiar, including a new low-gravity source ULAS J005505.68+013436.0, with spectroscopic classification L2γ. We provide revised izYJHKW1W2 template colours for late M dwarfs, types M7 to M9. The catalogue is only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/589/A49

  7. Eddy-current testing and analysis of a sample of Zircaloy fuel cladding for the OECD Halden 'Round-Robin' exercise (Phase II)

    International Nuclear Information System (INIS)

    Two samples of Zircaloy fuel cladding were supplied, one containing pre-measured defects of known type and size, and the other containing unknown defects. Eddy-current testing techniques were used to ascertain the nature of the unknown defects. By using a high resolution encircling coil and a probe coil and then processing digitally the data with specially prepared software, nine internal defects, of volume 0.18 to 0.86 mm3 were located positively and identified, despite interference from heavily fluctuating background signals. (author)

  8. Removable partial overdentures with mechanical (precision) attachments.

    Science.gov (United States)

    Mensor, M C

    1990-10-01

    Mechanical attachments for overdentures have been available in various forms for over a century. The explosive interest in osseointegration and the effort on the part of the profession to avoid the complete denture as a treatment modality has stirred the interest in positive retentive elements for overdentures represented by the mechanical stud and bar attachments. The cited references provide a resource as a trouble-free guide in the selection and use of the various stud and bar attachment systems. The clinical examples show a pattern of application not generally discussed by the manufacturers, illustrating the simplicity of use with the options for all attachments including magnets. The discussion on magnets comes from 9 years of clinical experience. Rare earth magnets provide excellent adjunct retention, and their assembly follows the same protocol and complexity as stud attachment systems. All magnets, at the present state of the art, have a corrosion potential with the exception of the Laser Sealed Units (Golden Dental, Golden, CO). Finally, the mechanics of the attachment overdenture serves as an excellent training field for the osseointegrated prosthesis, be it the classic Brånemark (Nobelpharma USA, Chicago, IL) restorative or the implant overdenture concept. PMID:2227040

  9. Attachment and cancer: a conceptual integration.

    Science.gov (United States)

    Tacón, Anna M

    2002-12-01

    Cancer traditionally has been explained by the biomedical model; however, it is limited in comprehensively accounting for all factors in this disease. Recently, it has been suggested that a broader theoretical framework that includes psychosocial components in cancer is needed to complement the traditional approach. The purpose of this article, therefore, is to explore the utility of attachment theory as a biopsychosocial model of both development and health. Attachment, a developmental theory, explains how repeated interactions between caregiver and child in the early years establish lifelong psychosocial, physiological, affective, and cognitive patterns as well as enduring patterns of stress response to threat or illness. Despite attachment theory's biopsychosocial foundation, the application of attachment security as a factor in physical health and psychosomatic medicine is relatively recent. The current work reviews attachment theory and psychosocial literature with regard to cancer and follows with a novel attempt to conceptually integrate both bodies of literature. A concluding integrative model of attachment theory and the type C behavior pattern is provided to illustrate potential links and integrative processes that may lead to disease resilience or vulnerability. PMID:14664730

  10. Attachment styles and violence within couples.

    Science.gov (United States)

    Bond, Sharon B; Bond, Michael

    2004-12-01

    This study examined whether an individual's attachment style and/or a couple's combination of attachment styles predicted violence within the marriage and explored whether other variables moderated the risk of violence. Measures of attachment style were administered to 41 discordant couples who presented to four different clinics. The couples' presenting complaints were not violence, and those who did report violence on questioning did not manifest severe violence, i.e., requiring shelters or legal intervention. Self-report measures of violence and marital satisfaction, including problem-solving communication, were also given. Using analysis of covariance and logistic regression, the relative contributions to strength of predicting being a victim of conjugal violence were calculated. An anxious attachment style was a significant predictor of females being victims of violence and of men not being victims. A dismissive style in men was predictive of men being victims when entered into the model with problem solving communication. The combination of anxiously attached females and dismissive males was a potent predictor of violence, and longer duration of marriage and poor problem-solving communication added power to the prediction. Marital interaction, which is influenced by couples' attachment styles and problem-solving communication, is a significant factor in marital partners experiencing physical violence. For couples with milder levels of violence, a more nuanced approach (compared with the legally based approach used for severe violence) seems indicated. PMID:15583508

  11. Carbon-enhanced metal-poor stars: a window on AGB nucleosynthesis and binary evolution. II. Statistical analysis of a sample of 67 CEMP-$s$ stars

    CERN Document Server

    Abate, C; Izzard, R G; Karakas, A I

    2015-01-01

    Many observed CEMP stars are found in binary systems and show enhanced abundances of $s$-elements. The origin of the chemical abundances of these CEMP-$s$ stars is believed to be accretion in the past of enriched material from a primary star in the AGB phase. We investigate the mechanism of mass transfer and the process of nucleosynthesis in low-metallicity AGB stars by modelling the binary systems in which the observed CEMP-$s$ stars were formed. For this purpose we compare a sample of $67$ CEMP-$s$ stars with a grid of binary stars generated by our binary evolution and nucleosynthesis model. We classify our sample CEMP-$s$ stars in three groups based on the observed abundance of europium. In CEMP$-s/r$ stars the europium-to-iron ratio is more than ten times higher than in the Sun, whereas it is lower than this threshold in CEMP$-s/nr$ stars. No measurement of europium is currently available for CEMP-$s/ur$ stars. On average our models reproduce well the abundances observed in CEMP-$s/nr$ stars, whereas in C...

  12. A mid-IR study of Hickson Compact Groups II. Multi-wavelength analysis of the complete GALEX-Spitzer Sample

    CERN Document Server

    Bitsakis, T; da Cunha, E; Diaz-Santos, T; Floc'h, E Le; Magdis, G

    2011-01-01

    We present a comprehensive study on the impact of the environment of compact galaxy groups on the evolution of their members using a multi-wavelength analysis, from the UV to the infrared, for a sample of 32 Hickson compact groups (HCGs) containing 135 galaxies. Fitting the SEDs of all galaxies with the state-of-the-art model of da Cunha (2008) we can accurately calculate their mass, SFR, and extinction, as well as estimate their infrared luminosity and dust content. We compare our findings with samples of field galaxies, early-stage interacting pairs, and cluster galaxies with similar data. We find that classifying the groups as dynamically "old" or "young", depending on whether or not at least one quarter of their members are early-type systems, is physical and consistent with past classifications of HCGs based on their atomic gas content. [...ABRIDGED...] We also examine their SF properties, UV-optical and mid-IR colors, and we conclude that all the evidence point to an evolutionary scenario in which the e...

  13. Warm Absorbers in X-rays (WAX), a comprehensive high resolution grating spectral study of a sample of Seyfert Galaxies: II. Warm Absorber dynamics and feedback to galaxies

    CERN Document Server

    Laha, Sibasish; Chakravorty, Susmita; Dewangan, Gulab C; Kembhavi, Ajit K

    2016-01-01

    This paper is a sequel to the extensive study of warm absorber (WA) in X-rays carried out using high resolution grating spectral data from XMM-Newton satellite (WAX-I). Here we discuss the global dynamical properties as well as the energetics of the WA components detected in the WAX sample. The slope of WA density profile ($n\\propto r^{-\\alpha}$) estimated from the linear regression slope of ionization parameter $\\xi$ and column density $N_H$ in the WAX sample is $\\alpha=1.236\\pm 0.034$. We find that the WA clouds possibly originate as a result of photo-ionised evaporation from the inner edge of the torus (torus wind). They can also originate in the cooling front of the shock generated by faster accretion disk outflows, the ultra-fast outflows (UFO), impinging onto the interstellar medium or the torus. The acceleration mechanism for the WA is complex and neither radiatively driven wind nor MHD driven wind scenario alone can describe the outflow acceleration. However, we find that radiative forces play a signi...

  14. Herschel Far-Infrared Photometry of the Swift Burst Alert Telescope Active Galactic Nuclei Sample of the Local Universe. II. SPIRE Observations

    CERN Document Server

    Shimizu, T Taro; Mushotzky, Richard F; Koss, Michael J; Barger, Amy J; Cowie, Lennox L

    2015-01-01

    We present far-infrared (FIR) and submillimeter photometry from the Herschel Space Observatory's Spectral and Photometric Imaging Receiver (SPIRE) for 313 nearby z<0.05 active galactic nuclei (AGN). We selected AGN from the 58 month Swift Burst Alert Telescope (BAT) catalog, the result of an all-sky survey in the 14-195 keV energy band, allowing for a reduction in AGN selection effects due to obscuration and host galaxy contamination. We find 46% (143/313) of our sample is detected at all three wavebands and combined with our PACS observations represents the most complete FIR spectral energy distributions of local, moderate luminosity AGN. We find no correlation between the 250, 350, and 500 micron luminosities with 14-195 keV luminosity, indicating the bulk of the FIR emission is not related to the AGN. However, Seyfert 1s do show a very weak correlation with X-ray luminosity compared to Seyfert 2s and we discuss possible explanations. We compare the SPIRE colors (F250/F350 and F350/F500) to a sample of n...

  15. GMRT Radio Halo Survey in galaxy clusters at z = 0.2 -- 0.4. II.The eBCS clusters and analysis of the complete sample

    CERN Document Server

    Venturi, T; Dallacasa, D; Cassano, R; Brunetti, G; Bardelli, S; Setti, G

    2008-01-01

    We present the results of the GMRT cluster radio halo survey. The main purposes of our observational project are to measure which fraction of massive galaxy clusters in the redshift range z=0.2--0.4 hosts a radio halo, and to constrain the expectations of the particle re--acceleration model for the origin of the non--thermal radio emission. We selected a complete sample of 50 clusters in the X-ray band from the REFLEX (27) and the eBCS (23) catalogues. In this paper we present Giant Metrewave Radio Telescope (GMRT) observations at 610 MHz for all clusters still lacking high sensitivity radio information, i.e. 16 eBCS and 7 REFLEX clusters, thus completing the radio information for the whole sample. The typical sensitivity in our images is in the range 1$\\sigma \\sim 35-100 \\mu$Jy b$^{-1}$. We found a radio halo in A697, a diffuse peripheral source of unclear nature in A781, a core--halo source in Z7160, a candidate radio halo in A1682 and ``suspect'' central emission in Z2661. Including the literature informat...

  16. Attachment Quality and Psychopathological Symptoms in Clinically Referred Adolescents: The Mediating Role of Early Maladaptive Schema

    OpenAIRE

    Roelofs, Jeffrey; Onckels, Linda; Muris, Peter

    2012-01-01

    This study investigated relationships between attachment insecurity, maladaptive cognitive schemas, and various types of psychopathological symptoms in a sample of clinically referred adolescents (N = 82). A mediation model was tested in which maladaptive schemas operated as mediators in the relations between indices of attachment quality and conduct, peer, and emotional problems. Results revealed partial support for the hypothesized mediation effect: the schema domain of disconnection/reject...

  17. Longitudinal association between infant disorganized attachment and childhood posttraumatic stress symptoms

    OpenAIRE

    MacDonald, Helen Z.; Beeghly, Marjorie; GRANT-KNIGHT, WANDA; AUGUSTYNs, MARILYN; WOODS, RYAN W.; Cabral, Howard; Rose-Jacobs, Ruth; Saxe, Glenn N.; Frank, Deborah A.

    2008-01-01

    The purpose of this study was to evaluate whether children with a history of disorganized attachment in infancy were more likely than children without a history of disorganized attachment to exhibit symptoms of posttraumatic stress disorder (PTSD) at school age following trauma exposure. The sample consisted of 78 8.5-year-old children from a larger, ongoing prospective study evaluating the effects of intrauterine cocaine exposure (IUCE) on children's growth and development from birth to adol...

  18. Examining psychopathy from an attachment perspective: the role of fear of rejection and abandonment

    OpenAIRE

    Conradi, HJ; Boertien, SD; Cavus, H; Verschuere, Bruno

    2016-01-01

    A key feature of psychopathy, a self-centered orientation towards others and a failure to truly connect, is poorly understood. The attachment framework can be used to examine underlying interpersonal mechanisms. Because of the overall failure to connect, we anticipated, and found, in a large undergraduate sample (n=1074) that both affective-interpersonal traits and impulsive-irresponsible psychopathy facets were positively related to attachment avoidance. Different dynamics may underlie this ...

  19. Attachment, recalled parental rearing, and ADHD symptoms predict emotion processing and alexithymia in adults with ADHD

    OpenAIRE

    Edel, Marc-Andreas; Edel, Susanne; Krüger, Marie; Assion, Hans-Jörg; Juckel, Georg; Brüne, Martin

    2015-01-01

    Background The aim of the aricle is to study the relationship between attachment, parental rearing behavior, and (infant and current) ADHD symptoms with emotion processing and alexithymia in adults with ADHD. Methods Attachment, parental behavior, and ADHD variables were tested for predictive value regarding emotion processing and alexithymia in the total sample, the pooled ADHD groups (with inattentive type and combined type, each with n = 26) and a control group (n = 26). Comparisons were p...

  20. Childhood Trauma and Attachment to Birth Parents in Foster Children. An Empirical Study.

    OpenAIRE

    Skjold, Solvei Harila

    2010-01-01

    Traumatic childhood experiences, posttraumatic stress symptoms (PTSS), and aspects of attachment behavior towards birth parents are assessed in a sample of 80 young individuals who have been or are currently in foster care in Norway. Associations between traumatic childhood experiences, posttraumatic stress symptoms, and attachment to birth parents are explored. Traumatic childhood experiences were assessed with a Norwegian version of the Childhood Trauma Questionnaire (CTQ). ...

  1. Are maternal reflective functioning and attachment security associated with preadolescent mentalization?

    OpenAIRE

    Rosso, Anna Maria; Viterbori, Paola; Scopesi, Alda M.

    2015-01-01

    This study investigated the impact of maternal reflective functioning (RF) and attachment security on children’s mentalization. The Adult Attachment Interview (AAI) was administered to mothers in a sample of 41 mother–preadolescent dyads. AAI transcripts were rated in terms of the Berkeley AAI System (Main and Goldwyn, 1998) and the Reflective Functioning Scale (RFS; Fonagy et al., 1998). Preadolescent mentalization was assessed using a semi-structured interview adapted from O’Connor and Hirs...

  2. Maternal mentalization: do online and offline measures independently predict attachment security?

    OpenAIRE

    Colbeck, K.

    2014-01-01

    Aims: It has been demonstrated that online and offline measures of maternal mentalization use relatively distinct neurological systems. As the unique influence of each on infant attachment classification has not yet been investigated, this study aims to compare the two. Method: A combined sample of “referred” and “non-referred” mother-infant pairs were coded for reflective functioning and representational risk at time one, and reflective functioning, representational risk, infant attachment s...

  3. Determination of propoxur in environmental samples by automated solid-phase extraction followed by flow-injection analysis with tris(2,2'-bipyridyl)ruthenium(II) chemiluminescence detection

    International Nuclear Information System (INIS)

    A sensitive method for the analysis of propoxur in environmental samples has been developed. It involves an automated solid-phase extraction (SPE) procedure using a Gilson Aspec XLi and flow-injection analysis (FI) with chemiluminescence (CL) detection. The FI-CL system relies on the photolysis of propoxur by irradiation using a low-pressure mercury lamp (main spectral line 254 nm). The resultant methylamine is subsequently detected by CL using tris(2,2'-bipyridyl)ruthenium(III), which is on-line generated by photo-oxidation of the ruthenium(II) complex in the presence of peroxydisulfate. The linear concentration range of application was 0.05-5 μg mL-1 of propoxur, with a detection limit of 5 ng mL-1. The repeatability was 0.82% expressed as relative standard deviation (n = 10) and the reproducibility, studied on 5 consecutive days, was 2.1%. The sample throughput was 160 injection per hour. Propoxur residues below ng mL-1 levels could be determined in environmental water samples when an SPE preconcentration device was coupled on-line with the FI system. This SPE-FI-CL arrangement provides a detection limit as low as 5 ng L-1 using only 500 mL of sample. In the analysis of fruits and vegetables, the detection limit was about 10 μg kg-1

  4. Male partners' attachment styles as predictors of women's coerced first sexual intercourse in Chinese college students' dating relationships.

    Science.gov (United States)

    He, Shanshan; Tsang, Sandra

    2014-01-01

    Attachment theory has great potential to help our understanding of the apparent contradiction between violence and intimacy. Yet very few studies applied this theory to explain or predict sexual coercion in the context of intimate relationships. This study examined the relation between male partners' attachment styles and women's coerced first sexual intercourse in dating relationships. There were 927 valid questionnaires collected by purposive snowball sampling in five main cities in China to college students who were currently in a romantic relationship. Results showed that in both male and female samples, male partners' anxious attachment style were significantly and positively predicted emotional manipulation coercive tactics. In the female sample, male partners' two attachment styles (anxious and avoidant) positively predicted violence threat tactics, and male partners' avoidant attachment style positively predicted defection threat tactics. The research hypothesis of this study has been successfully supported, and implications and limitations were discussed. PMID:25905127

  5. Current research projects at the Austrian TRIGA Mark II. High sensitive detection of rare fission gas release of a fuel element sample of the TRIGA Mark II reactor in Vienna

    International Nuclear Information System (INIS)

    It is intended to study the temperature dependent release of rare fission gas products, thus providing information for the calculation of cladding material thickness and burn-up. The fuel clement sample has a diameter of 15/32 inch and 1/2 inch height. The temperature is controlled by 5 thermocoax thermocouples. Pellet, thermocouples and heating coils are encapsulated in a stainless steel tube with an inlet and an outlet for the Helium carrier stream. The Helium is free of Ar, Kr and Xe. The counter system consists of a NaJ crystal in connection with two photomultipliers, the crystal being surrounded by two coaxial annular proportional counters. The radioactive gases are measured while they are flowing through the counting volume

  6. Interview Investigation of Insecure Attachment Styles as Mediators between Poor Childhood Care and Schizophrenia-Spectrum Phenomenology.

    Directory of Open Access Journals (Sweden)

    Tamara Sheinbaum

    Full Text Available Insecure attachment styles have received theoretical attention and some initial empirical support as mediators between childhood adverse experiences and psychotic phenomena; however, further specificity needs investigating. The present interview study aimed to examine (i whether two forms of poor childhood care, namely parental antipathy and role reversal, were associated with subclinical positive and negative symptoms and schizophrenia-spectrum personality disorder (PD traits, and (ii whether such associations were mediated by specific insecure attachment styles.A total of 214 nonclinical young adults were interviewed for subclinical symptoms (Comprehensive Assessment of At-Risk Mental States, schizophrenia-spectrum PDs (Structured Clinical Interview for DSM-IV Axis II Disorders, poor childhood care (Childhood Experience of Care and Abuse Interview, and attachment style (Attachment Style Interview. Participants also completed the Beck Depression Inventory-II and all the analyses were conducted partialling out the effects of depressive symptoms.Both parental antipathy and role reversal were associated with subclinical positive symptoms and with paranoid and schizotypal PD traits. Role reversal was also associated with subclinical negative symptoms. Angry-dismissive attachment mediated associations between antipathy and subclinical positive symptoms and both angry-dismissive and enmeshed attachment mediated associations of antipathy with paranoid and schizotypal PD traits. Enmeshed attachment mediated associations of role reversal with paranoid and schizotypal PD traits.Attachment theory can inform lifespan models of how adverse developmental environments may increase the risk for psychosis. Insecure attachment provides a promising mechanism for understanding the development of schizophrenia-spectrum phenomenology and may offer a useful target for prophylactic intervention.

  7. Grafting 3-mercaptopropyl trimethoxysilane on multi-walled carbon nanotubes surface for improving on-line cadmium(II) preconcentration from water samples

    Energy Technology Data Exchange (ETDEWEB)

    Corazza, Marcela Zanetti; Somera, Bruna Fabrin; Segatelli, Mariana Gava [Departamento de Quimica, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitario, Londrina-PR, CEP 86051-990 (Brazil); Tarley, Cesar Ricardo Teixeira, E-mail: tarley@uel.br [Departamento de Quimica, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitario, Londrina-PR, CEP 86051-990 (Brazil); Instituto Nacional de Ciencia e Tecnologia (INCT) de Bioanalitica, Universidade Estadual de Campinas (UNICAMP), Instituto de Quimica, Departamento de Quimica Analitica, Cidade Universitaria Zeferino, Vaz, s/n, CEP 13083-970, Campinas-SP (Brazil)

    2012-12-15

    Highlights: Black-Right-Pointing-Pointer 3-Mercaptopropyl trimethoxysilane grafted on MWCNT surface was prepared. Black-Right-Pointing-Pointer The material promoted an increase on performance of MWCNT for Cd{sup 2+} adsorption. Black-Right-Pointing-Pointer The life time of adsorbent was very high. Black-Right-Pointing-Pointer An improvement of 84% on the sensitivity was achieved. - Abstract: In the present study, the performance of multi-walled carbon nanotubes (MWCNTs) grafted with 3-mercaptopropyltrimethoxysilane (3-MPTMS), used as a solid phase extractor for Cd{sup 2+} preconcentration in a flow injection system coupled to flame atomic absorption spectrometry (FAAS), was evaluated. The procedure involved the preconcentration of 20.0 mL of Cd{sup 2+} solution at pH 7.5 (0.1 mol L{sup -1} buffer phosphate) through 70 mg of 3-MPTMS-grafted MWCNTs packed into a minicolumn at 6.0 mL min{sup -1}. The elution step was carried out with 1.0 mol L{sup -1} HCl. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to estimate the extent of the MWCNT chemical modification. The 3-MPTMS-grafted MWCNTs provided a 1.68 times improvement in the sensitivity of the Cd{sup 2+} FAAS determination compared to the unsilanized oxidized MWCNTs. The following parameters were obtained: preconcentration factor of 31.5, consumptive index of 0.635 mL, sample throughput of 14 h{sup -1}, and concentration efficiency of 9.46 min{sup -1}. The analytical curve was constructed in the range of 1.0-60.0 {mu}g L{sup -1} (r = 0.9988), and the detection and quantification limits were found to be 0.15 {mu}g L{sup -1} and 0.62 {mu}g L{sup -1}, respectively. Different types of water samples and cigarette sample were successfully analyzed, and the results were compared using electrothermal atomic absorption spectrometry (ETAAS) as reference technique. In addition, the accuracy of proposed method was also checked by analysis of

  8. Methionine-pyrene hybrid based fluorescent probe for trace level detection and estimation of Hg(II) in aqueous environmental samples: Experimental and computational studies

    International Nuclear Information System (INIS)

    A new fluorescent, Hg2+ selective chemosensor, 4-methylsulfanyl-2-[(pyren-4-ylmethylene)-amino] butyric acid methyl ester (L, MP) was synthesized by blending methionine with pyrene. It was well characterized by different analytical techniques, viz. 1H NMR, 13C NMR, QTOF mass spectra, elemental analysis, FTIR and UV-vis spectroscopy. The reaction of this ligand with Hg2+ was studied by steady state and time-resolved fluorescence spectroscopy. The Hg2+ complexation process was confirmed by comparing FTIR, UV-vis, thermal, QTOF mass spectra and 1H NMR data of the product with that of the free ligand values. The composition (Hg2+:L = 1:1) of the Hg2+ complex in solution was evaluated by fluorescence titration method. Based on the chelation assisted fluorescence quenching, a highly sensitive spectrofluorometric method was developed for the determination of trace amounts of Hg2+ in water. The ligand had an excitation and emission maxima at 360 nm and 455 nm, respectively. The fluorescence life times of the ligand and its Hg2+ complex were 1.54 ns and 0.72 ns respectively. The binding constant of the ligand, L with Hg2+ was calculated using Benesi-Hildebrand equation and was found to be 7.5630 x 104. The linear range of the method was from 0 to 16 μg L-1 with a detection limit of 0.056 μg L-1 for Hg2+. The quantum yields of the ligand and its Hg2+ complex were found to be 0.1206 and 0.0757 respectively. Both the ligand and its Hg2+ complex have been studied computationally (Ab-initio, Hartree Fock method) to get their optimized structure and other related physical parameters, including bond lengths, bond angles, dipole moments, orbital interactions etc. The binding sites of the ligand to the Hg2+ ion as obtained from the theoretical calculations were well supported by 1H NMR titration. The interference of foreign ions was negligible. This method has been successfully applied to the determination of mercury(II) in industrial waste water.

  9. Structure, attachment properties, and ecological importance of the attachment system of English ivy (Hedera helix)

    OpenAIRE

    Melzer, Björn; Seidel, Robin; Steinbrecher, Tina; Speck, Thomas

    2011-01-01

    Root climbers such as English ivy (Hedera helix) rely on specialized adventitious roots for attachment, enabling the plants to climb on a wide range of natural and artificial substrates. Despite their importance for the climbing habit, the biomechanical properties of these specialized adventitious roots compared with standard roots and their performance in the attachment to different host species or inert substrates have not been studied. Here organs and tissues involved in the attachment are...

  10. Neurobiology of secure infant attachment and attachment despite adversity: a mouse model

    OpenAIRE

    Roth, T.L.; Raineki, C.; Salstein, L.; Perry, R; Wilson, T. A. Sullivan; Sloan, A.; Lalji, B.; Hammock, E.; Wilson, D. A.; Levitt, P; Okutani, F.; Kaba, H. (Harry); R.M. Sullivan

    2013-01-01

    Attachment to an abusive caregiver has wide phylogenetic representation, suggesting that animal models are useful in understanding the neural basis underlying this phenomenon and subsequent behavioral outcomes. We previously developed a rat model, in which we use classical conditioning to parallel learning processes evoked during secure attachment (odor-stroke, with stroke mimicking tactile stimulation from the caregiver) or attachment despite adversity (odor-shock, with shock mimicking maltr...

  11. Metal-poor dwarf galaxies in the SIGRID galaxy sample. II. The electron temperature-abundance calibration and the parameters that affect it

    CERN Document Server

    Nicholls, David C; Sutherland, Ralph S; Jerjen, Helmut; Kewley, Lisa J; Basurah, Hassan

    2014-01-01

    In this paper, we use the Mappings photoionization code to explore the physical parameters that impact on the measurement of electron temperature and abundance in HII regions. In the previous paper we presented observations and measurements of physical properties from the spectra of seventeen HII regions in fourteen isolated dwarf irregular galaxies from the SIGRID sample. Here, we analyze these observations further, together with three additional published data sets. We explore the effects of optical thickness, electron density, ionization parameter, ionization source, and non-equilibrium effects on the relation between electron temperature and metallicity. We present a standard model that fits the observed data remarkably well at metallicities between 1/10 and 1 solar. We investigate the effects of optically thin HII regions, and show that they can have a considerable effect on the measured electron temperature, and that there is evidence that some of the observed objects are optically thin. We look at the ...

  12. The Role of Adolescent Attachment in Moderating and Mediating the Links between Parent and Adolescent Psychological Symptoms

    Science.gov (United States)

    Woodhouse, Susan S.; Ramos-Marcuse, Fatima; Ehrlich, Katherine B.; Warner, Stephanie; Cassidy, Jude

    2010-01-01

    The present study examined whether adolescent attachment security and attachment-related representations moderate and mediate, respectively, the link between parent symptoms (depressive and anxiety) and adolescent depressive symptoms. Participants were 189 (118 girls) eleventh graders and their parents in a community sample. Results showed that…

  13. Anger and hostility in adolescents: relationships with self-reported attachment style and perceived parental rearing styles.

    NARCIS (Netherlands)

    Muris, P.; Meesters, C.; Morren, M.; Moorman, L.

    2004-01-01

    OBJECTIVE: To examine relationships between self-reported attachment style and parental rearing behaviors, on the one hand, and anger/hostility, on the other hand, in a sample of nonclinical adolescents (N=441). METHOD: Participants completed (a) a single-item measure of attachment style; (b) a ques

  14. Attachment Dimensions as Predictors of Mental Health and Psychosocial Well-Being in the Transition to University

    Science.gov (United States)

    Carr, Sam; Colthurst, Kate; Coyle, Melissa; Elliott, Dave

    2013-01-01

    This study sought to investigate the predictive relationship that dimensions of attachment shared with an array of indicators of psychosocial well-being and mental health in a sample of students making the transition to higher education. One hundred and thirty-one students completed the Vulnerable Attachment Styles Questionnaire (VASQ) prior to…

  15. Insecure Attachment, Dysfunctional Attitudes, and Low Self-Esteem Predicting Prospective Symptoms of Depression and Anxiety during Adolescence

    Science.gov (United States)

    Lee, Adabel; Hankin, Benjamin L.

    2009-01-01

    This study extends the existing adult literature on insecure attachment as a predictor of depression and anxiety by examining these pathways in a sample of adolescents. In addition, dysfunctional attitudes and low self-esteem were tested as mediators of the association between insecure attachment and symptoms of depression and anxiety. Youth (N =…

  16. The Moderating Role of Father's Care on the Onset of Binge Eating Symptoms among Female Late Adolescents with Insecure Attachment

    Science.gov (United States)

    Pace, Ugo; Cacioppo, Marco; Schimmenti, Adriano

    2012-01-01

    The present study examined the association between quality of attachment, perception of the father's bond, and binge eating symptoms in a sample of female late adolescents. In total, 233 female students aged between 18 and 20 years completed measures on binge eating, quality of attachment and parent-child relationship. Data showed that respondents…

  17. Respondent-driven sampling on the Thailand-Cambodia border. II. Knowledge, perception, practice and treatment-seeking behaviour of migrants in malaria endemic zones

    Directory of Open Access Journals (Sweden)

    Kaewkungwal Jaranit

    2011-05-01

    Full Text Available Abstract Background Population movements along the Thailand-Cambodia border, particularly among highly mobile and hard-to-access migrant groups from Cambodia and Myanmar, are assumed to play a key role in the spread of artemisinin resistance. Data on treatment-seeking behaviours, knowledge and perceptions about malaria, and use of preventive measures is lacking as characteristics of this population prevent them from being represented in routine surveillance and the lack of a sampling frame makes reliable surveys challenging. Methods A survey of migrant populations from Cambodia and Myanmar was implemented in five selected rural locations in Thailand along the Thai-Cambodian border using respondent driven sampling (RDS to determine demographic characteristics of the population, migratory patterns, knowledge about malaria, and health-care -seeking behaviours. Results The majority of migrants from Myanmar are long-term residents (98% with no plans to move back to Myanmar, understand spoken Thai (77% and can therefore benefit from health messages in Thai, have Thai health insurance (99% and accessed public health services in Thailand (63% for their last illness. In comparison, the majority of Cambodian migrants are short-term (72%. Of the short-term Cambodian migrants, 92% work in agriculture, 18% speak Thai, 3.4% have Thai health insurance, and the majority returned to Cambodia for treatment (45%, self-treated (11%, or did not seek treatment for their last illness (27%. Conclusion Most highly mobile migrants along the Thai-Cambodia border are not accessing health messages or health treatment in Thailand, increasing their risk of malaria and facilitating the spread of potentially resistant Plasmodium falciparum as they return to Cambodia to seek treatment. Reaching out to highly mobile migrants with health messaging they can understand and malaria diagnosis and treatment services they can access is imperative in the effort to contain the spread of

  18. Ethanolamine phosphoglycerol attachment to eEF1A is not essential for normal growth of Trypanosoma brucei

    OpenAIRE

    Eva Greganova; Peter Bütikofer

    2012-01-01

    Eukaryotic elongation factor 1A (eEF1A) is the only protein modified by ethanolamine phosphoglycerol (EPG). In mammals and plants, EPG is attached to conserved glutamate residues located in eEF1A domains II and III, whereas in the unicellular eukaryote, Trypanosoma brucei, a single EPG moiety is attached to domain III. A biosynthetic precursor of EPG and structural requirements for EPG attachment to T. brucei eEF1A have been reported, but the role of this unique protein modification in cellul...

  19. Constraining the Evolution of the Ionizing Background and the Epoch of Reionization with z~6 Quasars II: A Sample of 19 Quasars

    Energy Technology Data Exchange (ETDEWEB)

    Fan, X; Strauss, M A; Becker, R H; White, R L; Gunn, J E; Knapp, G R; Richards, G T; Schneider, D P; Brinkmann, J; Fukugita, M

    2006-01-05

    We study the evolution of the ionization state of the intergalactic medium (IGM) at the end of the reionization epoch using moderate resolution spectra of a sample of nineteen quasars at 5.74 < z{sub em} < 6.42 discovered in the Sloan Digital Sky Survey. Three methods are used to trace IGM properties: (a) the evolution of the Gunn-Peterson (GP) optical depth in the Ly{alpha}, {beta}, and {gamma} transitions; (b) the distribution of lengths of dark absorption gaps, and (c) the size of HII regions around luminous quasars. Using this large sample, we find that the evolution of the ionization state of the IGM accelerated at z > 5.7: the GP optical depth evolution changes from {tau}{sub GP}{sup eff} {approx} (1 + z){sup 4.3} to (1 + z){sup {approx}> 11}, and the average length of dark gaps with {tau} > 3.5 increases from < 10 to > 80 comoving Mpc. The dispersion of IGM properties along different lines of sight also increases rapidly, implying fluctuations by a factor of {approx}> 4 in the UV background at z > 6, when the mean free path of UV photons is comparable to the correlation length of the star forming galaxies that are thought to have caused reionization. The mean length of dark gaps shows the most dramatic increase at z {approx} 6, as well as the largest line-of-sight variations. We suggest using dark gap statistics as a powerful probe of the ionization state of the IGM at yet higher redshift. The sizes of HII regions around luminous quasars decrease rapidly towards higher redshift, suggesting that the neutral fraction of the IGM has increased by a factor of {approx}> 10 from z = 5.7 to 6.4, consistent with the value derived from the GP optical depth. The mass-averaged neutral fraction is 1-4% at z {approx} 6.2 based on the GP optical depth and HII region size measurements. The observations suggest that z {approx} 6 is the end of the overlapping stage of reionization, and are inconsistent with a mostly neutral IGM at z {approx} 6, as indicated by the finite

  20. The Relationship between Styles of Attachment to God and Forgiveness and Empathy among Female Students in the City of Qom

    Directory of Open Access Journals (Sweden)

    Mahsa Rashidi

    2016-04-01

    Full Text Available Forgiveness and empathy are factors which are influential in improving the relationships between people, themselves can be affected by various factors in turn. The purpose of this research was to investigate the relationship between the styles of attachment to God and forgiveness and empathy among female students in the city of Qom. 250 students were selected from the city of Qom by cluster sampling. Three questionnaires were used: styles of attachment to God by Kirkpatrick and Rowatt, emotional empathy by Mehrabian and Epstein and forgiveness inventory by Enzeit. Pearson correlation and Regression analysis were used for data analysis. The style of secure attachment to God had a significantly positive relationship with forgiveness and empathy. Furthermore, the style of avoidant attachment to God and the style of bilateral attachment to God had a significantly negative relationship with forgiveness. In addition, the standard coefficients of all three predictive variables (Secure attachment, bilateral and avoidant to God were all significant at p=0.05. Assessment and recognition of the style of attachment to God, the students and its relation with forgiveness and empathy can have valuable implications in providing the mental health of the students. Conclusion: The findings of this research show a connection between the style of attachment to God and forgiveness and empathy, indicate the clarification of attachment to God in students' forgiveness and empathy. Based on the findings, it can be suggested that the theory of attachment to God can be used in psychotherapy.