bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of relative humidity and substrate on the spatial association between glyphosate and ethoxylated seed oil adjuvants in the dried deposits of sessile droplets
Authors: Hunsche Mauricio , Noga Georg 
Published: July 2011

AbstractBACKGROUND: In recent years, several studies have shown the impact of adjuvants on the characteristics of herbicide deposits on leaf surfaces. Until now, most studies have addressed the distribution of active ingredients (AIs), whereas few experiments have focused on the location of the adjuvants. The objective of this study was a systematic examination of the particle distribution profile of both the AI (glyphosate, Gly) and the adjuvants after the application of sessile microdroplets on hydrophobic (Teflon) and hydrophilic (glass and aluminium) model surfaces.RESULTS: The association degree (AD) was surface dependent and specific for the tested adjuvants. In general, the rather hydrophobic adjuvant RSO 5 showed decreasing AD with Gly at increasing relative humidity (RH) levels. The rather hydrophilic RSO 60 adjuvant displayed higher AD between the compounds at a higher RH. A high concentration of the adjuvant reduced the AD for both of the RSO adjuvants evaluated.CONCLUSION: The combination of surface properties, the type of adjuvant and the relative humidity determines the degree of association between Gly and the adjuvants. The present results suggest that the interaction between the AI and an adjuvant determines whether spatial separation occurs, whereas physical processes (e.g. capillary particle movement, inward and outward Marangoni flows and the evaporation rate) are decisive for the extent of the separation. Coffee‐ring structures were formed exclusively with the adjuvant + Gly mixtures, whereas Gly alone formed either one big deposit or several small islands distributed within the droplet footprint. Copyright © 2011 Society of Chemical Industry
Steady‐state robustness of qualitative gene regulation networks
Authors: Breindl C. , Waldherr S. , Wittmann D. M. , Theis F. J. , Allgöwer F. 
Published: July 2011

SUMMARYIn this paper, we define a robustness measure for gene regulation networks, which allows to quantify how well a given model structure can reproduce a desired steady‐state pattern in the absence of detailed knowledge about the kinetic mechanisms and parameters. To develop this measure, a modeling framework is introduced, which is able to represent the qualitative knowledge typically available for gene regulation networks. With this framework, the robustness measure as well as tools for its efficient computation are developed. The benefit of our method is twofold: On the one hand, it allows to compare the robustness properties of different model structures and thus may help modelers to decide which model is biologically more plausible. On the other hand, the most fragile interconnections within a network can be detected. To demonstrate its use, the new method is applied to various models of a gene regulation network, which is responsible for the maintenance of the mid‐hindbrain boundary. We find that for this example system, weaker connected networks are more robust. Copyright © 2011 John Wiley & Sons, Ltd.
AN EXAMINATION OF THE IMPACT OF MULTIPLE DISTURBANCES ON A RIVER SYSTEM: TAXONOMIC METRICS VERSUS BIOLOGICAL TRAITS
Authors: Wooster D. E. , Miller S. W. , DeBano S. J. 
Published: July 2011

ABSTRACTRiver reaches are often subject to multiple co‐occurring anthropogenic stressors. Disentangling the relative impacts of different stressors is important in developing river management strategies. Bio‐assessments using taxonomically based metrics (e.g. taxa richness and diversity) are frequently used as a means of determining the impact of stressors on river reach quality. Although this method has been successful in determining river reach quality, taxonomically based metrics are often limited in their ability to distinguish mechanisms of impact and thus the importance of different stressors. In contrast, biological traits can provide a mechanistic understanding of anthropogenic stressor impacts and therefore have the potential to identify the importance of different co‐occurring stressors. Using both taxonomically based metrics and biological traits, we examined the impact of two common co‐occurring stressors, summer water withdrawal and channelization, on the macroinvertebrate assemblage of a Columbia River tributary Both metrics and traits showed a strong shift at the point where intense channelization began. However, the metrics failed to distinguish whether channelization or co‐occurring water withdrawal was the driver of change. In contrast, biological traits indicated that the assemblage within the heavily channelized area shifted to one dominated by resilience traits often found in river reaches subject to scouring flows. This result indicates that scouring flows associated with intense channelization are the primary driver of change in the macroinvertebrate assemblage and that water withdrawals had little observable impact. Our results demonstrate the utility of biological traits for disentangling the impact of multiple stressors in river systems. Copyright © 2011 John Wiley & Sons, Ltd.
Thermogravimetric analysis and dynamic Young's modulus measurement of N,N‐dimethylacetamide‐impregnated wood polymer composites
Authors: Rahman Md. Rezaur , Hamdan Sinin , Ahmed Abu Saleh , Islam Md. Saiful , Talib Z.A. , Abdullah W.F. Wan , Mat M.S. Che 
Published: July 2011

AbstractMercerized wood species were impregnated with N,N‐dimethylacetamide. Their Fourier transform infrared spectra then showed enhanced absorption at 1419 cm−1 (C/CH3), and the 1267‐cm−1 (N/CH3) stretching band confirmed the occurrence of a modification reaction. Thermogravimetric investigation of the resultant wood polymer composites (WPCs) indicated a better thermal stability in comparison with that of the raw wood. The dynamic Young's modulus of the WPCs was significantly increased compared with that of raw wood. After modification, analysis by scanning electron microscopy showed porous cells of raw wood filled with the polymer, which led to the better stability of WPCs. Analysis by XRD indicated that the crystallinity of WPCs increased because of an increase in the stiffness and the thermal stability of the composites. J. VINYL ADDIT. TECHNOL., 2011. © 2011 Society of Plastics Engineers
How do referring clinicians want radiologists to report? Suggestions from the COVER survey
Authors: Bosmans Jan M. L. , Peremans Lieve , De Schepper Arthur M. , Duyck Philippe O. , Parizel Paul M. 
Published: July 2011

Abstract

Objective
To investigate what referring clinicians suggest when asked how the quality of radiology reports can be improved.

Methods
At the end of the questionnaire of the COVER survey, a bi-national quantitative survey on the radiology report among referring physicians, clinical specialists and general practitioners were able to freely enter suggestions with regard to improving the quality of the report. These suggestions were isolated from the quantitative results. Subjects and themes were identified, examined, ordered, counted, compared and analysed.

Results
Of a total of 3,884 invitations to participate, we received 735 response forms from clinicians (18.9%), 233 (31.7%) of which contained suggestions. Issues mentioned most frequently were the need for clinical information and a clinical question, for a conclusion, structuring, communicating directly with the clinician, completeness, integrating images or referring to images, mentioning relevant findings outside of the clinical question, mentioning a diagnosis or suitable differential diagnosis, and concise reporting.

Conclusion
Although these spontaneous suggestions are erratic and sometimes contradictory, they summarise the ideas as well as the emotions of these clients of the radiology department. Therefore it is advisable to take them into account when developing new ways of reporting.
Pain catastrophizing influences the use and the effectiveness of distraction in schoolchildren
Authors: Verhoeven K. , Goubert L. , Jaaniste T. , Van Ryckeghem D.M.L. , Crombez G. 
Published: July 2011

AbstractDistraction is an intuitive way of coping with pain and is often used in children's pain treatment programs. However, empirical evidence concerning the effectiveness of distraction is equivocal. One potential explanation might be that distraction does not work for everyone in every situation. In the current series of studies, we examined the role of pain catastrophizing as an influencing factor of distraction effectiveness. In the first study, we investigated the use of pain coping strategies (including distraction) in schoolchildren (N = 828, aged 8–18 years) by means of a questionnaire. Results indicated that children with higher levels of pain catastrophizing reported using less distraction strategies in daily life than children with lower levels of pain catastrophizing. In the second study, a subsample (N = 81, aged 9–18 years) performed a painful cold pressor task (CPT) (12 °C). Participants were randomly assigned to a distraction group, in which an attention‐demanding tone‐detection task was performed during the CPT, or a control group, in which no distraction task was performed. Results showed that participants in the distraction group were engaged in the distraction task, and reported to have paid less attention to pain than participants in the control group. However, distraction was ineffective in reducing cold pressor pain, and even intensified the pain experience in high catastrophizing children. Caution may be warranted in using distraction as a ‘one size fits all’ method, especially in high catastrophizing children.
Friends in High Places: International Politics and the Emergence of States from Secessionism
Authors: Coggins Bridget 
Published: July 2011

AbstractState emergence is an essential dynamic of the international system, yet international relations scholars pay it little attention. Their oversight is all the more unfortunate because international politics ultimately determine which aspiring system members will succeed in becoming new states. Existing models of state emergence rely exclusively on internal or domestic-level explanations. However, the international system is inherently social; therefore any aspiring state's membership also depends on the acceptance of its peers. I present a novel, international-level model of state birth that suggests state leaders should use decisions regarding new members strategically to advance their own interests, not passively abide by domestic factors. I test this argument using a new data set on secessionism and Great Power recognition (1931–2000). I find that external politics have important, underappreciated effects on state emergence. Furthermore, acknowledging the politics of recognition's centrality to state birth alters our understanding of civil conflict dynamics and conflict resolution and suggests important implications for system-wide stability.
Judicial Power in Domestic and International Politics
Authors: Staton Jeffrey K. , Moore Will H. 
Published: July 2011

AbstractAlthough scholars have made considerable progress on a number of important research questions by relaxing assumptions commonly used to divide political science into subfields, rigid boundaries remain in some contexts. In this essay, we suggest that the assumption that international politics is characterized by anarchy whereas domestic politics is characterized by hierarchy continues to divide research on the conditions under which governments are constrained by courts, international or domestic. We contend that we will learn more about the process by which courts constrain governments, and do so more quickly, if we relax the assumption and recognize the substantial similarities between domestic and international research on this topic. We review four recent books that highlight contemporary theories of the extent to which domestic and international law binds states, and discuss whether a rigid boundary between international and domestic scholarship can be sustained on either theoretical or empirical grounds.
Constitutional Democracy and World Politics: A Response to Gartzke and Naoi
Authors: Keohane Robert O. , Macedo Stephen , Moravcsik Andrew 
Published: July 2011

AbstractAccording to our constitutional conception, modern democracy is multidimensional: it incorporates the values of faction control, minority rights protection, and informed deliberation, as well as political accountability. The impact of multilateral organizations (MLOs) on democracy is often not straightforward: it requires careful analysis of how particular MLOs interact with preexisting domestic political institutions within specific issue-areas. Thus we reject the conventional wisdom that MLOs are necessarily democracy-degrading simply because they are not directly participatory. Gartzke and Naoi's critique misstates our views on some fundamental issues. We clarify our analyses of the multidimensional nature of constitutional democracy; the relationship between democracy and multilateralism; the Madisonian distinction between interest groups that support the general interest and those that do not; and our understanding of the current state of research. We suggest possibilities for further elaborating our argument, theoretically and empirically.
Revisiting the Resource Curse: Natural Disasters, the Price of Oil, and Democracy
Authors: Ramsay Kristopher W. 
Published: July 2011

AbstractFluctuations in the price of oil and the contemporaneous political changes in oil-producing countries have raised an important question about the link between oil rents, political institutions, and civil liberties. This article presents a simple model of the relationship between resource income and political freedom and, using an instrumental variables approach, estimates the causal effect of shocks to oil revenues on levels of democracy. Using a new data set, multiple measures of democracy, and various specifications, I find that the effect of oil price shocks is larger than might be expected and on the order of the effects found from changes in gross domestic product.
From awe to satisfaction: immediate affective responses to the Antarctic tourism experience
Authors: Powell Robert B. , Brownlee Matthew T.J. , Kellert Stephen R. , Ham Sam H. 
Published: July 2011

ABSTRACTAntarctica is a rugged, austere, and yet stunningly beautiful continent with charismatic fauna including several species of penguins, whales, and seals. Mass media, writings from the early explorers, and modern film all describe firsthand experiences as delightful, beautiful, challenging, humbling, and even awe-inspiring. This dramatic allure of Antarctica now fuels one of the fastest growing tourism markets in the world with over 30,000 visitors annually traveling to the continent. Despite the fact that Antarctic tourism has occurred for over 30 years, little research has investigated the psychological and affective influence of these immersive tourism experiences in the Antarctic environment. This study explored visitors' affective judgments regarding their Antarctic tourism experience. An onsite post experience survey was administered to Antarctic tourists to investigate their satisfaction with a range of tour attributes. In addition, the researchers used the open-ended question, “How did this Antarctic experience affect you?” to explore tourists’ affective response to their interaction with the Antarctic tourism environment. These open ended responses were coded usinga priorithemes generated from Kellert's environmental values typology. Additionally, each response was analysed for the presence of an awe experience. Further analysis revealed that tourists described five sub-dimensions of an ‘awe’ experience (nature-human relationship, spiritual connection, transformative experience, goal clarification, and sense of feeling humbled), with many individuals experiencing multiple dimensions of awe. Consequently, this analysis reveals that the impact of an Antarctic tour experience is powerful, rich, and extremely complex.
Co-occurrence of social anxiety and depression symptoms in adolescence: differential links with implicit and explicit self-esteem?
Authors: de Jong P. J. , Sportel B. E. , de Hullu E. , Nauta M. H. 
Published: July 2011

BackgroundSocial anxiety and depression often co-occur. As low self-esteem has been identified as a risk factor for both types of symptoms, it may help to explain their co-morbidity. Current dual process models of psychopathology differentiate between explicit and implicit self-esteem. Explicit self-esteem would reflect deliberate self-evaluative processes whereas implicit self-esteem would reflect simple associations in memory. Previous research suggests that low explicit self-esteem is involved in both social anxiety and depression whereas low implicit self-esteem is only involved in social anxiety. We tested whether the association between symptoms of social phobia and depression can indeed be explained by low explicit self-esteem, whereas low implicit self-esteem is only involved in social anxiety.MethodAdolescents during the first stage of secondary education (n=1806) completed the Revised Child Anxiety and Depression Scale (RCADS) to measure symptoms of social anxiety and depression, the Rosenberg Self-Esteem Scale (RSES) to index explicit self-esteem and the Implicit Association Test (IAT) to measure implicit self-esteem.ResultsThere was a strong association between symptoms of depression and social anxiety that could be largely explained by participants' explicit self-esteem. Only for girls did implicit self-esteem and the interaction between implicit and explicit self-esteem show small cumulative predictive validity for social anxiety, indicating that the association between low implicit self-esteem and social anxiety was most evident for girls with relatively low explicit self-esteem. Implicit self-esteem showed no significant predictive validity for depressive symptoms.ConclusionsThe findings support the view that both shared and differential self-evaluative processes are involved in depression and social anxiety.
Care-givers’ perspectives of occupational engagement of persons with dementia
Authors: TSUNAKA MEGUMI , CHUNG JENNY C. C. 
Published: July 2011

ABSTRACTMeaningful engagement in activity is associated with the maintenance of health and wellbeing, but reduced activity participation is common among persons with dementia. Family care-givers play an important role in engaging their relatives with dementia in activities but little is known about their perception of occupational engagement. This study aimed to examine care-givers’ perception of occupational performance of their relatives from three aspects: person, occupation and environment. Adopting a qualitative methodology, semi-structured and in-depth interviews were conducted with 14 family care-givers. Care-givers were also asked to document the activity patterns of their relative, using the Activity Card Sort Hong Kong version (ACS-HK). The ACS-HK findings suggested that high-demand leisure activities were mostly retained (61%) while instrumental activities of daily living were the least retained (37%). Qualitative analysis revealed that care-givers’ perception of activity participation was intertwined with their motives and behaviours to get their relatives engaged in activities. Care-givers acknowledged occupational engagement as a means of maintaining wellness and used various strategies to encourage their relative's activity participation. Apathy and passivity, however, are difficult to deal with. Also, activity decisions appear to depend on the availability of support resources and a balance between safety concern and risk-taking. Clinical practitioners could assist care-givers by suggesting activity strategies and providing support resources for continued engagement of their relative in activities.
Delayed oseltamivir treatment is associated with longer viral shedding of pandemic (H1N1) 2009 virus
Authors: LEUNG Y. H. , LIM W. L. , WONG M. H. , CHUANG S. K. 
Published: July 2011

SUMMARYDuring the early phase of the influenza pandemic in 2009, all cases of laboratory-confirmed pandemic (H1N1) 2009 (pH1N1) infection required compulsory isolation in hospital. These cases were offered oseltamivir treatment and only allowed to be discharged from the hospital when three consecutive respiratory specimens were negative for the virus by reverse transcription–polymerase chain reaction (RT–PCR). We reviewed the case records of these patients to assess the viral shedding kinetics of the pH1N1 virus. We defined viral shedding duration as the interval from illness onset date to the date of collection of the last positive specimen from the patients. Fifty-six patients were included in the study, of whom 96% received oseltamivir. The median viral shedding duration of pH1N1 virus by viral culture and RT–PCR were 3 days and 4 days, respectively. Patients who started oseltamivir treatment >48 h after onset had a significantly longer median viral shedding duration by viral culture than those who started treatment within 48 h of onset (4 days vs. 2 days, P=0·014).
The effect of growth hormone (GH) and insulin-like growth factor-I (IGF-I) on in vitro maturation of equine oocytes
Authors: Pereira Gabriel Ribas , Lorenzo Pedro Luis , Carneiro Gustavo Ferrer , Ball Barry Allen , Gonçalves Paulo Bayard Dias , Pegoraro Lígia Maria Cantarelli , Bilodeau-Goeseels Sylvie , Kastelic John P. , Casey Patrick J. , Liu Irwin K. M. 
Published: July 2011

SummaryThe objective of this study was to test the hypothesis that equine growth hormone (eGH), in combination with insulin growth factor-I (IGF-I), influences positively in vitro nuclear and cytoplasmic maturation of equine oocytes. Cumulus–oocyte complexes were recovered from follicles that were < 25 mm in diameter, characterized by morphology and were allocated randomly as follow: (a) control (no additives); (b) 400 ng/ml eGH; (c) 200 ng/ml IGF-I; (d) eGH + IGF-I; and (e) eGH + IGF-I + 400 ng/ml anti-IGF-I antibody. Oocytes were matured for 30 h at 38.5°C in air with 5% CO2 and then stained with 10 μg/ml propidium iodide (PI) to evaluate nuclear status and 10 μg/ml Lens culinaris agglutinin-fluorescein complex (FITC-LCA) to assess cortical granule migration by confocal microscopy. The proportion of immature oocytes that developed to the metaphase II (MII) stage in the eGH + IGF-I group (15 of 45) was greater than in the groups that were treated only with IGF-I (7 of 36, p = 0.03). Oocytes that reached MII in the control group (20 of 56; 35.7%) showed a tendency to be different when compared with eGH + IGF-I group (15 of 45; 33.3%, p = 0.08). The treated group that contained anti-IGF-I (15 of 33; 45.4%) decreased the number of oocytes reaching any stage of development when compared with eGH (47 of 72; 65.3%) and eGH + IGF-I (33 of 45; 73.3%) groups (p = 0.05) when data from MI and MII were combined. We concluded that the addition of eGH to in vitro maturation (IVM) medium influenced the in vitro nuclear and cytoplasmic maturation of equine oocytes. The use of GH and IGF-I in vitro may represent a potential alternative for IVM of equine oocytes.