bluuebunny/crossref_metadata_2025_split huggingface dataset:
A DFT Study of the Interaction between Microhydrated Anions and Naphthalendiimides
Authors: Campo‐Cacharrón Alba , Cabaleiro‐Lago Enrique M. , Rodríguez‐Otero Jesús 
Published: December 2011

AbstractThe characteristics of the interaction of anions with naphthalendiimides, the basic structural motif of a newly synthesized anion channel based on anion⋅⋅⋅π interactions, are studied by computational methods. Stable complexes are formed with bromide, chloride, fluoride or hydroxide anions, which exhibit strong anion⋅⋅⋅π interactions in the gas phase. Following the sequence of the polarizing power of the anions, hydroxide and fluoride complexes are the most strongly interacting. The presence of a small number of water molecules strongly affects the anion⋅⋅⋅π interactions, especially for hydroxide and fluoride complexes, so the differences in interaction strength among the anions drop significantly. The calculations suggest that a small number of water molecules can be crucial to reducing dehydration cost and contributing to stabilizing interactions with the naphthalendiimide units.
The Effects of Biological Environments on the Electron‐Relay Functionality of Tryptophan Residues in Proteins
Authors: Chen Xiaohua , Dai Hongjing , Li Jilai , Huang Xuri , Wei Zidong 
Published: December 2011

AbstractClarifying the contribution of tryptophan (Trp) to electron‐transfer (ET) processes in different protein surroundings can help to understand the effective pathway of ET in proteins. Interactions between Trp residues and protein microsurroundings involve intermolecular H‐bonds, cation and π‐electron clouds of aromatic rings, the secondary structure and π orbital of aromatic rings, and so on. Detailed analyses reveal that the microsurroundings play an important role in modulating the electron‐relay function of Trp in proteins. Generally, microsurroundings with strong Lewis acidity inhibit electron hole transport through Trp residues. Systems with weak Lewis acidity finely tune the electron‐relay ability of Trp in proteins, while those with strong Lewis basicity strongly enhance the electron‐relay ability of Trp residues.
Xenopus staufen2 is required for anterior endodermal organ formation
Authors: Bilogan Cassandra K. , Horb Marko E. 
Published: December 2011

AbstractSummary:Defining the regulatory molecular networks involved in patterning the developing anterior endoderm is essential to understand how the pancreas, liver, stomach, and duodenum are discretely specified from each other. In this study, we analyzed the expression and function of the double‐stranded RNA‐binding protein Staufen2 in Xenopus laevis endoderm. We found that staufen2 was broadly expressed within the developing endoderm beginning at gastrulation becoming localized to the anterior endoderm at later stages. Through morpholino‐mediated knockdown, we demonstrate that Staufen2 function is required for proper formation of the stomach, liver, and pancreas. We define that its function is required during gastrulation for proper patterning of the dorsal‐ventral axis and that it acts to regulate expression of BMP signaling components. genesis 50:251–259, 2012. © 2012 Wiley Periodicals, Inc.
Theoretical Investigations of Mechanisms of Thermal Cleavage of E=E Bonds in Heavy Butadiene Systems (E = C, Si, Ge, Sn, and Pb)
Authors: Sheu Jeng‐Horng , Su Ming‐Der 
Published: December 2011

AbstractThe potential energy surfaces for the intramolecular reactions of heavy 1,3‐butadiene have been explored using DFT. All the stationary points, which include the heavy 1,3‐butadienes (R2E=ER–ER=ER2, E = group 14 element), intramolecular fragments, transition states, and the products, were completely optimized at the B3LYP/LANL2DZ level of theory. Five 1,3‐butadiene species, which include carbon, silicon, germanium, tin, and lead, were chosen as model reactants. Our theoretical findings suggest the following: (1) both sterically bulky substituents attached to the heavy butadiene and the weakness of the E=E double bond lead to the easy cleavage of one E=E double bond in heavy 1,3‐butadiene and (2) for two intramolecular reactions (cycloaddition and 1,2‐migration) of the heavy 1,3‐butadienes with sterically overcrowded substituents, the lighter the E atoms involved in the 1,3‐butadiene molecule, the smaller the intramolecular barrier, the lower the reaction enthalpy, and the more facile its intramolecular reaction at room temperature. Furthermore, a configuration‐mixing model has been used to rationalize the computational results, and the results obtained allow a number of predictions to be made.
Extended finite element method for viscous flow inside complex three‐dimensional geometries with moving internal boundaries
Authors: Fard Arash Sarhangi , Hulsen Martien A. , Anderson Patrick D. 
Published: December 2011

SUMMARYA three‐dimensional extended finite element method is presented to simulate Stokes flow in complex geometries with internal moving parts. Instead of re‐meshing the flow domain, the kinematics of the internal objects are imposed on the conservation equations using a constraint, implemented with a Lagrangian multiplier. To capture discontinuities of field variables, such as pressure and velocity, on the intersected elements, XFEM is used. To validate our method, it is first applied to a relatively simple problem, that is, the flow around a cylinder in a channel. The results are verified by comparing with a boundary‐fitted solution. After validation of the model and its implementation, the three‐dimensional flow in a twin‐screw extruder is simulated and the results are compared with experimental data from literature. XFEM shows very good accuracy for complex geometries with internal moving parts and narrow gap regions where the shear rate is orders of magnitude higher than in other regions. Copyright © 2011 John Wiley & Sons, Ltd.
The effect of LED lighting on color discrimination and preference of elderly people
Authors: Cheng Wenting , Ju Jiaqi , Sun Yaojie , Lin Yandan 
Published: December 2011

AbstractThe purpose of this study is to find out the effects of light‐emitting diode (LED) lighting on elderly people's color discrimination and preference, to improve the lighting environment for elderly people. In this study, experiments were conducted under LED lighting with two different spectra (with color‐correlated temperature [CCT] of 2800K and 6000K), and three different illuminance levels (30lx; 100lx; 1000lx). Six elderly observers (aged 55–65 years) participated in the experiments and were exposed to each lighting condition to finish one trial of a color discrimination test (Farnsworth–Munsell 100‐Hue Test) and a 7‐scale, 6‐item preference evaluation test. We conclude that elderly people perform better in color discrimination with higher CCT of LED light sources, which compensate for their decreased lens transmission at short wavelength. Their performance also increases with higher illuminance (30lx‐1000lx) of LED lighting. Meanwhile, they prefer higher illuminance, which makes them find the lighting environment more comfortable, brighter, and better for reading; but for CCT, although they feel a higher CCT is better for reading, they still have different tastes regarding CCT of light sources. © 2011 Wiley Periodicals, Inc.
The influence of elderly vision degradation on subjective rating of floor slipperiness
Authors: Hsu Yao‐Wen 
Published: December 2011

AbstractThis study investigated the influence of elderly vision degradation on subjective rating of floor slipperiness and the correlation between the subjective ratings and objective measures. Slips and falls are common causes of injures and fatalities in the elderly population. Many slips and falls may be attributed to environmental risks and misjudgment of floor slipperiness by vision degradation. Environmental risks are generally caused by a slippery floor. The coefficient of friction (COF) is one of the most commonly used indices to assess floor slipperiness. The measurements conducted in this study acquired the COF on four floors under three surface conditions (dry, sand‐covered, and wet). The results showed that the dry condition has the highest COF and the wet condition has the lowest. Thirty elderly persons and thirty younger persons were recruited for vision screening. The vision degradation in elders was significant, with most elders having eye diseases. The subjective ratings of floor slipperiness were recorded for these subjects. Although both age groups had a similar rating trend with the COF measures, the correlation between rating and COF for younger persons was significantly stronger than that for elders. The results also showed that the smooth floor and the sand‐covered condition both cause lower correlation coefficients between rating and COF for elders. The results could be used to reduce slip and fall accidents by elderly persons. © 2011 Wiley Periodicals, Inc.
Effect of spatial resolution on regionalization of hydrological model parameters
Authors: Singh Shailesh Kumar , Bárdossy András , Götzinger J. , Sudheer K. P. 
Published: December 2011

AbstractLack of availability of historical data series is one of the major hindrances in hydrological modelling. Regionalization of hydrological model parameters is one of the solutions to obtain the parameters for ungauged basins. Recently, lots of methodologies have been developed. They can be categorized as model calibration then fitting regression between model parameters and catchments characteristics, using some kind of transfer function. The aim of this study was to compare different regionalization methods as well as to look how the spatial resolution affects regionalization. In this study, a modified Lipschitz and monotony condition was used for regionalization. To identify the effect of the model resolution, the parameters of a distributed and semi‐distributed version of the Hydrologiska Byråns Vattenbalansavdelning (HBV) model were regionalized. The study was conducted at the upper Neckar catchment of southwest Germany. It has been found that the combination of Lipschitz and monotony condition has performed reasonably. It has been seen that the distributed model structure has outperformed the semi‐distributed model structure. It shows under present data conditions that higher model resolution can describe processes of ungauged basins reasonably. Copyright © 2011 John Wiley & Sons, Ltd.
Comment on ‘García‐Santos G, Bruijnzeel LA. 2011. Rainfall, fog and throughfall dynamics in a subtropical ridge top cloud forest, National Park of Garajonay (La Gomera, Canary Islands, Spain). Hydrological Processes 25: 411–417’
Authors: Ritter Axel , Regalado Carlos M. 
Published: December 2011

AbstractA previous study aiming to characterize the water dynamics of a cloud forest in the Garajonay National Park (La Gomera) from measurements taken in a plot located in the upper part of a selected watershed within the park is here commented. Reported magnitudes of hydrological variables and conclusions based on them are in disagreement with those of numerous studies carried out previously at the same site. Large data dispersion and inapplicability of some of the hypothesis assumed are shown to invalidate most of the results. Copyright © 2011 John Wiley & Sons, Ltd.
Keeping the spirit alive: using feminist methodology to address silencing
Authors: Shpungin Elaine , Allen Nicole , Loomis Colleen , DelloStritto Mary Ellen 
Published: December 2011

AbstractThis article describes a feminist intervention to raise awareness about, and problematize, the pervasive experience of silencing, as reported by women, people of color, students, people identifying as gay, lesbian, bisexual, transgender, and queer (GLBTQ), people with national origins outside of North America, and people with disabilities, within the Society for Community Research and Action (SCRA). A theater‐based intervention was designed and scripts were written from real‐life experiences that defined and described the problem of silencing as structural. We highlight three main points that emerged from intervention: (a) nontraditional approaches that step outside the cultural norms of a setting have great potential for raising awareness; (b) questions of power, privilege, and voice continue to be central considerations when using feminist‐based anti‐oppression methods; and (c) although acts of silencing can occur at the individual level, they thrive in an environment in which power, privilege, and historical inequities operate invisibly (without being named, acknowledged, or addressed). © 2011 Wiley Periodicals, Inc.
Embodying critical feminism in community psychology: unraveling the fabric of gender and class
Authors: Angelique Holly 
Published: December 2011

AbstractIn this article, I offer a critical feminist theoretical reflection on my lived experiences as a working‐class White woman as a challenge to some of the dominant narratives in academia. In particular, I describe my development of feminist and class‐consciousness as an “organic intellectual.” I discuss changes to my working‐class identity and the challenges of breaking through the glass‐class ceiling as an academician. I reveal how stigma management has irrevocably shaped my academic life and how my attempts at cultural suicide have overshadowed my professional and personal lives. I ask for a radical critique of higher education and argue for the importance of community psychology to infuse feminism and class consciousness into the field to address societal power asymmetries and to approach its value stance as a discipline. © 2011 Wiley Periodicals, Inc.
Where's the feminism in mothering?
Authors: D'Arcy Catherine , Turner Colleen , Crockett Belinda , Gridley Heather 
Published: December 2011

AbstractThis article is a reflective narrative bringing together personal, collective, and action learning reflections from three women: all mothers, feminists, and community psychology practitioners. Its focus on mothering highlights the interconnectedness and tensions across these roles, as well as the shared learnings arising from this collaboration. The article draws on our experiences in two participatory action research projects in different parts of Melbourne, Australia, to illustrate how our feminism informed approaches to improving mothers' and children's well‐being within a community environment. Learnings for practice include the importance of support and partnership with and empowerment of mothers in all their diversity, and of community change towards communal and child‐centered structures. The combined community psychology and feminist focus may assist those working with mothers in other communities. Sociocultural and political considerations include individualistic notions of motherhood, judgements about '”good” and “neglectful” mothers, and lack of priority for children's needs in community contexts. © 2011 Wiley Periodicals, Inc.
Feminist education and feminist community psychology: experiences from an Irish context
Authors: Moane Geraldine , Quilty Aideen 
Published: December 2011

AbstractThis article describes experiences in an Irish context of education programs delivered in 2 communities, 1 based on class (a working class urban community) and 1 based on sexual orientation (an urban lesbian, gay, bisexual, and transgender community). It aims to illustrate how feminist education can play an important role in feminist community psychology. Principles and practices of feminist education, or feminist pedagogy, have a great deal in common with feminist community psychology, but have been most often practiced in academic rather than in community settings. Feminist education in community settings provides a participatory and dialogical context in which knowledge can be cocreated from the bottom up. It allows for the exploration of diversity and the development of a political analysis that can further involvement in change at a number of different levels. Research on the feminist education programs described here indicates that participants were more likely to make changes in their lives, to obtain employment and/or further education, and to be more involved in community and other forms of action for change. © 2011 Wiley Periodicals, Inc.
Baculovirus‐mediated vascular endothelial growth factor‐DΔNΔC gene transfer induces angiogenesis in rabbit skeletal muscle
Authors: Heikura Tommi , Nieminen Tiina , Roschier Miia M. , Karvinen Henna , Kaikkonen Minna U. , Mähönen Anssi J. , Lesch Hanna P. , Rissanen Tuomas T. , Laitinen Olli H. , Airenne Kari J. , Ylä‐Herttuala Seppo 
Published: December 2011

AbstractBackgroundOccluded arteries and ischemic tissues cannot always be treated by angioplasty, stenting or by‐pass‐surgery. Under such circumstances, viral gene therapy may be useful in inducing increased blood supply to ischemic area. There is evidence of improved blood flow in ischemic skeletal muscle and myocardium in both animal and human studies using adenoviral vascular endothelial growth factor (VEGF) gene therapy. However, the expression is transient and repeated gene transfers with the same vector are inefficient due to immune responses.MethodsDifferent baculoviral vectors pseudotyped with or without vesicular stomatitis virus glycoprotein (VSV‐G) and/or carrying woodchuck hepatitis virus post‐transcriptional regulatory element (Wpre) were tested both in vitro and in vivo. VEGF‐DΔNΔC was used as therapeutic transgene and lacZ as a control. In vivo efficacy was evaluated as capillary enlargement and transgene expression in New Zealand White (NZW) rabbit skeletal muscle.ResultsA statistically significant capillary enlargement was detected 6 days after gene transfer in transduced areas compared to the control gene transfers with baculovirus and adenovirus encoding β‐galactosidase (lacZ). Substantially improved gene transfer efficiency was achieved with a modified baculovirus pseudotyped with VSV‐G and carrying Wpre. Dose escalation experiments revealed that either too large volume or too many virus particles caused inflammation and necrosis in the target tissue, whereas 109 plaque forming units injected in multiple aliquots resulted in transgene expression with only mild immune reactions.ConclusionsWe show the first evidence of biologically significant baculoviral gene transfer in skeletal muscle of NZW rabbits using VEGF‐DΔNΔC as a therapeutic transgene. Copyright © 2012 John Wiley & Sons, Ltd.
Self‐expanding metal stents (SEMS) for patients with advanced Esophageal cancer in Malawi: An effective palliative treatment
Authors: Thumbs Alexander , Borgstein Eric , Vigna Leo , Kingham T. Peter , Kushner Adam L. , Hellberg Kai , Bates Jane , Wilhelm Torsten J. 
Published: December 2011

AbstractBackground and ObjectivesEsophageal cancer is common in Malawi and most patients are inoperable at time of diagnosis. The aim of this study was to prospectively evaluate palliative treatment with self‐expanding metal stents (SEMS) in Malawi, a low‐income country with limited medical resources.MethodsData of patients with advanced inoperable esophageal cancer were prospectively collected. Tumor and patient specifics, risk factors, dysphagia scores, complications, and survival were assessed. Follow‐up data for 1 year or until death were collected from 118/143 patients (83%) during clinic visits, home visits, or via cell phone.ResultsOne hundred forty‐three patients were treated with 154 SEMS. Median survival was 210 days (95% CI: 150–262 days). Fourteen of 118 patients with complete follow‐up (11.9%) survived more than 1 year with longest documented survival of 406 days. The median dysphagia score improved from 3 at the time of presentation to 0 at the time of death. Early complications occurred in 4.2% (6/143), late complications in 11.9% of patients (14/118). The procedure related mortality was 2.1% (3/143).ConclusionsSEMS is an appropriate palliative treatment in a resource‐limited environment. For the vast majority of patients a single intervention provides lasting improvement of dysphagia. J. Surg. Oncol. 2012;105:410–414. © 2011 Wiley Periodicals, Inc.
Use of capillary electrophoresis with chemiluminescence detection for sensitive determination of homocysteine
Authors: Mu Xiaomei , Zhao Shulin , Huang Yong , Ye Fanggui 
Published: December 2011

AbstractA sensitive capillary electrophoresis (CE) method with chemiluminescence (CL) detection was developed for the determination of homocysteine (HCys) in human plasma. In this work, N‐(4‐aminobutyl)‐N‐ethylisoluminol was used as tagging reagent to label the analyte for achieving high assay sensitivity. N‐(4‐Aminobutyl)‐N‐ethylisoluminol‐tagged HCys after CE separation reacted with hydrogen peroxide in the presence of horseradish peroxidase, producing CL emission. Experimental conditions for labeling analyte, CE separation, and CL detection were studied. The CL intensity was proportional to the concentration of HCys in the range of 2.5×10−8 to 5.0×10−6 M. Detection limit (S/N=3) was 7.6×10−9 M. Human plasma samples from healthy donors were analyzed by the presented method. HCys levels were found to be in the range of 9.50–15.3 μM.
Israeli adolescents with ongoing exposure to terrorism: Suicidal ideation, posttraumatic stress disorder, and functional impairment
Authors: Chemtob Claude M. , Pat‐Horenczyk Ruth , Madan Anita , Pitman Seth R. , Wang Yanping , Doppelt Osnat , Burns Kelly Dugan , Abramovitz Robert , Brom Daniel 
Published: December 2011

AbstractIn this study, we examined the relationships among terrorism exposure, functional impairment, suicidal ideation, and probable partial or full posttraumatic stress disorder (PTSD) from exposure to terrorism in adolescents continuously exposed to this threat in Israel. A convenience sample of 2,094 students, aged 12 to 18, was drawn from 10 Israeli secondary schools. In terms of demographic factors, older age was associated with increased risk for suicidal ideation, OR = 1.33, 95% CI [1.09, 1.62], p < .01, but was protective against probable partial or full PTSD, OR = 0.72, 95% CI [0.54, 0.95], p < .05; female gender was associated with greater likelihood of probable partial or full PTSD, OR = 1.57, 95% CI [1.02, 2.40], p < .05. Exposure to trauma due to terrorism was associated with increased risk for each of the measured outcomes including probable partial or full PTSD, functional impairment, and suicidal ideation. When age, gender, level of exposure to terrorism, probable partial or full PTSD, and functional impairment were examined together, only terrorism exposure and functional impairment were associated with suicidal ideation. This study underscores the importance and feasibility of examining exposure to terrorism and functional impairment as risk factors for suicidal ideation.
Closing One of the Last Gaps in Polyionene Compositions: Alkyloxyethylammonium Ionenes as Fast‐Acting Biocides
Authors: Mattheis Claudia , Zheng Mengyao , Agarwal Seema 
Published: December 2011

AbstractAlkyloxyethylammonium ionenes are reported as biocompatible biocides with a time of biocidal action within a few minutes. The presence of both ethoxyethyl and aliphatic spacers besides long alkyl chain substituents on the quaternary nitrogen atom differentiates these biocides structurally from the known polyionenes. The influence of alkyl spacer length, counter ion and length of the pendant alkyl groups on the antibacterial properties is studied. E. coli is adopted as a test organism. MIC and MBC values are determined via broth dilution methods; time‐dependent tests are accomplished by determining the number of viable cells with the spread‐plate method after different contact times. Structural characterization is conducted via NMR and mass spectrometry techniques.magnified image