bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnitude of Hurricane Ike storm surge sedimentation: implications for coastal marsh aggradation
Authors: Williams Harry F.L. 
Published: April 2012

ABSTRACTThere is a paucity of information on the regional distribution and magnitude of hurricane storm surge sedimentation. This study assesses the spatial extent and magnitude of Hurricane Ike's (2008) storm surge sedimentation and discusses implications for the role of hurricanes in marsh aggradation. The characteristics of the storm surge deposit, including thickness, inland penetration, volume and mass, were determined for 15 transects across marshes bordering the Gulf of Mexico in south‐eastern Texas and south‐western Louisiana. The deposit is up to 0·85 m thick, extends up to 3·6 km inland, and has an estimated volume of about 13·7 million m3 and an estimated mass of about 16·2 million metric tons. This level of sedimentation is one to two orders of magnitude larger than other potential sources of marsh sedimentation, including annual riverine inputs and inputs from alongshore sediment transport. The study findings add support to a growing body of evidence that hurricanes may be the predominant sediment source for long‐term aggradation of many coastal marshes bordering the Gulf of Mexico. Copyright © 2012 John Wiley & Sons, Ltd.
Intergalaktische Winde
Authors: Richter Philipp 
Published: April 2012

AbstractSterne bergen nur einen verschwindend geringen Teil der sichtbaren Materie. Das größte Reservoir bilden filamentartige Strukturen aus Gas, die das ganze Universum durchziehen. Ihre Erforschung verrät viel über die Entstehung und Entwicklung von Sternsystemen.
RoboBee und ihre Freunde
Authors: Fuhr Eckhard 
Published: April 2012

AbstractMit Feuilletonisten‐Augen durch die DFG‐Ausstellung „Von der Idee zur Erkenntnis”︁ — ein Blick von außen auf die Originalität und den spielerisch‐freien Geist der Grundlagenforschung
PEER EFFECTS IN ADOLESCENT BMI: EVIDENCE FROM SPAIN
Authors: Mora Toni , Gil Joan 
Published: April 2012

SUMMARYThis paper extends the recent literature on the influence of peers on adolescent weight on three new fronts. First, based on a survey of secondary school students in Spain in which peers are formed by nominated classmate friends, we find a more powerful positive and significant causal effect of friends’ mean BMI on adolescent BMI than previous US‐based research. These results are in line with international data, which show that peer group contact tends to vary across countries. Our findings cover a large set of controls, fixed effects, the testing of correlated unobservables, contextual influences and instrumental variables. Second, social interactions are identified through the property of intransitivity in network relationships. Finally, we report evidence of a strong, positive effect of peer pressure on several subgroups of adolescents in an attempt to study their vulnerability to social influences. Copyright © 2012 John Wiley & Sons, Ltd.
Retracted: Computer‐aided ergonomics and visualization for improving 3D display techniques
Authors: Huang Po‐Hsuan , Chen Chen‐Yuan , Chang Chin‐Jui , Lo D. C. , Huang Cheng‐Chieh 
Published: April 2012

AbstractAlthough there have been numerous studies regarding three‐dimensional (3D) display techniques and Flash technology, there has been little discussion of how to apply the 3D display technique to Flash applications. In this study, we develop a method that uses passive 3D display glasses, which are cheaper than other 3D display techniques, to reduce the cost and popularize this technique for web applications. The 3D red‐blue filter glasses are inexpensive and can be manufactured easily. We also look at how to construct a Flash game and test its 3D effects using the red‐blue filter glasses. © 2012 Wiley Periodicals, Inc.
The Suitability for the Work‐Related Musculoskeletal Disorders Checklist Assessment in the Semiconductor Industry: A Case Study
Authors: Lin Yen‐Hui , Chen Chih‐Yong , Pan Yi‐Tsong 
Published: April 2012

AbstractMusculoskeletal disorders and symptoms are common among workers in the semiconductor and related industries. Ergonomic‐related checklists are used to identify musculoskeletal disorder risk factors in the workplace. This study explores the suitability of the Occupational Safety and Health Administration (OSHA) musculoskeletal disorders (MSDs) checklist for use in the semiconductor manufacturing industry. Six companies were enrolled in the current study, and 122 subjects, ranging in age from 21 to 54 years old, were evaluated through a questionnaire survey and field observation using the OSHA MSDs checklist. The observers were administered an ergonomics‐based checklist training course with a duration of 36 hours. Experimental results demonstrated that nearly 50% of subjects reported physical discomfort, with shoulder symptoms (38.5%) being the most common complaint. In addition, the aggregated sensitivity, specificity, and positive predictive values for the MSDs checklist in the six companies were 47.3%, 62.4%, and 30.0%, respectively. This study concluded that the OSHA MSDs checklist appeared to contain better estimates for capturing musculoskeletal discomfort and found that the OSHA MSDs checklist provided an easily administered, proactive surveillance instrument to assist in early identification of musculoskeletal discomfort. © 2012 Wiley Periodicals, Inc.
New neurons generated from running are broadly recruited into neuronal activation associated with three different hippocampus‐involved tasks
Authors: Clark Peter J. , Bhattacharya Tushar K. , Miller Daniel S. , Kohman Rachel A. , DeYoung Erin K. , Rhodes Justin S. 
Published: April 2012

AbstractRunning increases the formation of new neurons in the adult rodent hippocampus. However, the function of new neurons generated from running is currently unknown. One hypothesis is that new neurons from running contribute to enhanced cognitive function by increasing plasticity in the adult hippocampus. An alternative hypothesis is that new neurons generated from running incorporate into experience‐specific hippocampal networks that only become active during running. The purpose of this experiment was to determine if new neurons generated from running are selectively activated by running, or can become recruited into granule cell activity occurring during performance on other behavioral tasks that engage the hippocampus. Therefore, the activation of new 5–6 week neurons was detected using BrdU, NeuN, and Zif268 triple‐label immunohistochemistry in cohorts of female running and sedentary adult C57BL/6J mice following participation in one of three different tasks: the Morris water maze, novel environment exploration, or wheel running. Results showed that running and sedentary mice displayed a nearly equivalent proportion of new neurons that expressed Zif268 following each task. Since running approximately doubled the number of new neurons, the results demonstrated that running mice had a greater number of new neurons recruited into the Zif268 induction in the granule cell layer following each task than sedentary mice. The results suggest that new neurons incorporated into hippocampal circuitry from running are not just activated by wheel running itself, but rather become broadly recruited into granule cell layer activity during distinct behavioral experiences. © 2012 Wiley Periodicals, Inc.
Decreased tumstatin‐mRNA is associated with poor outcome in patients with NSCLC
Authors: Luo Yi‐Qin , Ming Zhou , Zhao Liang , Yao Li‐Juan , Dong Hang , Du Jian‐Ping , Wu Shuang‐Zheng , Hu Wen 
Published: April 2012

AbstractTumstatin is a candidate tumor suppressor that plays an important role in tumor growth and angiogenesis. The purpose of this study was to evaluate the correlation between tumstatin‐mRNA expression and the clinicopathologic characteristics, tumor angiogenesis, outcome of patients with non–small cell lung cancer (NSCLC). Specimens from 68 patients with NSCLC were recruited in this study. Tumstatin‐mRNA expression and protein level in tumor tissues were quantified respectively by quantitative RT‐PCR and ELISA. Microvessel density (MVD) was determined by CD34 immunostaining. The correlation of tumstatin‐mRNA expression levels with clinicopathologic variables, tumor angiogenesis, and prognosis was analyzed. Tumstatin‐mRNA expression levels were decreased in tumor. Tumstatin‐mRNA expression level was significantly correlated with its protein level in tumor (r = 0.562; P = 0.001). Tumstatin‐mRNA expression levels in poorly differentiated tumor tissues were significantly lower than in well‐differentiated tumor tissues (P < 0.004). Furthermore, tumor tumstatin‐mRNA expression were also significantly related to tumor pathologic stage (P = 0.032) and MVD (r = −0.77, P < 0.0001). Overall survival (OS) and disease‐free survival (DFS) analysis indicated that NSCLC patients with low tumstatin‐mRNA expression had poorer OS and DFS than those with high expression (P = 0.015 and 0.037; respectively). Multivariable Cox regression analysis revealed that the tumstatin‐mRNA expression could be an independent prognostic indicators in both DFS and OS. Tumstatin‐mRNA expression levels are down‐regulated in NSCLC tissues. Tumstatin‐mRNA expression level correlates with prognosis, which suggests that tumstatin‐mRNA is a new potential independent marker of favorable prognosis in NSCLC. 2012 IUBMB IUBMB Life, 2012
Electrostatic polarization is critical for the strong binding in streptavidin‐biotin system
Authors: Mei Ye , Li Yong L. , Zeng Juan , Zhang John Z. H. 
Published: April 2012

AbstractThe origin of strong affinity of biotin and its analogs binding to (strept)avidin is still the subject of an ongoing controversy. In this work, thermodynamic integration is carried out to study of the difference of binding free energies between biotin and iminobiotin to streptavidin. Three atomic charge schemes are implemented and compared. One is the traditional AMBER charge, and the other two, termed the polarized protein‐specific charge, are based on a linear scaling quantum mechanical method and a continuous solvation model and have polarization effect partially or fully included. The result indicates that when nonpolarized AMBER force field is applied, the result is much underestimated. When electronic polarization is gradually included, the difference of binding affinity increases along with it. Using the linear‐response approximation to eliminate the error in self‐charging process, the corrected binding affinity agrees well with the experimental observation. This study is direct evidence indicating that polarization effect is critical for the strong binding in streptavidin‐biotin system. © 2012 Wiley Periodicals, Inc.
Time‐dependent Density Functional Theory Study on the Hydrogen‐bonded Dimers Formed by Gauche‐1PA and Trans‐1PA
Authors: Song Peng , Zhu Yong‐Hua , Li Yong‐Qing , Ding Yong , Ma Feng‐Cai 
Published: April 2012

AbstractThree hydrogen bonding complexes of the gauche‐1PA dimer (GG), trans‐1PA dimer (TT) and mixed dimer (GT) have been calculated for the geometry conformations and excited‐state energies. The electron distribution at the site of C‐O of H‐donor moiety in HOMO transfers to the direction of O‐H of H‐acceptor moiety in LUMO. The hydrogen bond between two 1PAs is the bridge of the intermolecular charge transfer. By the Zhao and Han's excited‐state hydrogen bonding dynamics rule, the first excited‐state hydrogen bonding change has been discussed without optimizing the excited‐state geometry conformations. According to the distinct difference between GT and GG (TT), we concluded that two gauche‐1PA monomers of one dimer are transformed at the same time to two trans‐1PA monomers.
Purification and Partial Properties of a Superoxide Dismutase from Agave Hybrid No.11648
Authors: Chen Bing , Chen Liang , Gao Li‐Jun , Ye Su‐Yu , Xiao Rui , Liu Pei‐Lian , Chen Bi‐Lian , Zhang Yun‐Xia , Yao Jun 
Published: April 2012

AbstractA superoxide dismutase enzyme was extracted from the leaves of Agave Hybrid No.11648 using homogenisation, ammonium sulphate fractional precipitation, diethylaminoethyl cellulose ion exchange and Sephadex gel filtration chromatography. A superoxide dismutase parallelogram‐shaped crystal was formed after packing at 4 °C for two days. The optimum pH was 8, and the optimum temperature was 40 °C. The crystal was relatively stable at temperatures below 60 °C and at pH values from 5 to 10. The subunit size was determined to be approximately 27.5 kDa by sodium dodecyl sulphate‐polyacrylamide gel electrophoresis. It was also demonstrated that the enzyme is an iron‐containing superoxide dismutase based on its sensitivity to inhibitors of potassium cyanide, hydrogen peroxide and chloroform‐ethanol and based on the results of ultraviolet absorption spectroscopy.
Trans‐3,5‐dihydroperoxy‐3,5‐dimethyl‐1,2‐dioxalane/HBr System as New, Effective, Mild and Non‐toxic Reagent for Synthesis of 2‐Aryl‐1H‐benzothiazoles and 2‐Aryl‐1‐arylmethyl‐1H‐benzimidazoles
Authors: Khosravi Kaveh , Kazemi Samira 
Published: April 2012

AbstractTtrans‐3,5‐dihydroperoxy‐3,5‐dimethyl‐1,2‐dioxalane has been used as new, effective, solid, inexpensive and nontoxic oxidant for in situ generation of Br+ from HBr. This system has been applied as catalyst for synthesis of 2‐aryl‐1H‐benzothiazoles and 2‐aryl‐1‐arylmethyl‐1H‐benzimidazoles at room temperature in excellent yields and high purity.
Development of the Brief Inventory of Perceived Stress
Authors: Lehman Kenneth A. , Burns Michelle Nicole , Gagen Emily C. , Mohr David C. 
Published: April 2012

ObjectivesTo provide a measure of perceived stress that is psychometrically superior to existing instruments and novel in dimensionality.DesignAt 4‐week intervals over 48 weeks, patients with multiple sclerosis (N= 138) completed 26 items from the Perceived Stress Scale (PSS) and the Perceived Stress Questionnaire (PSQ).ResultsExtant factor analytic models of the PSS fit poorly. A new measure using nine PSS and PSQ items, the Brief Inventory of Perceived Stress (BIPS), demonstrated good fit, construct validity, and stability with 3 factors: Lack of Control, Pushed, and Conflict and Imposition.ConclusionsItems commonly used to measure perceived stress may have a more sophisticated underlying structure than previously thought. The BIPS's multidimensionality and longitudinal stability offer potential benefits in conceptualization and outcome prediction.
Kinetic study of the partial hydrogenation of 1‐heptyne on tungsten oxide supported on alumina
Authors: Maccarrone María , Torres Gerardo , Lederhos Cecilia , Badano Juan , Vera Carlos , Quiroga Mónica , Yori Juan 
Published: April 2012

AbstractBACKGROUND: Partial hydrogenation of alkynes have industrial and academic relevance on a large scale; industries such as petrochemical, pharmacology and agrochemical use these compounds as raw material. Typical commercial catalysts contains palladium. Finding an economic, active and selective catalyst for the production of alkenes via partial hydrogenation of alkynes is thus an important challenge. On the other hand, the literature on kinetic studies of partial hydrogenation of heavy alkynes is scarce. So the main objectives of this work were to prepare a cheaper catalyst based on low W loading, and study the kinetic of the partial hydrogenation of 1‐heptyne. A pseudo‐homogeneous and six heterogeneous kinetic models were analyzed. The catalyst was characterized by ICP, XPS, DRX, TPR and hydrogen chemisorption techniques.RESULTS: The characterization results indicate that only WOx species are present on the alumina surface. The WOx/Al2O3 catalyst was active and selective for producing 1‐heptene even at low reaction temperatures, the partial hydrogenation of 1‐heptyne proceeds via two irreversible reactions in parallel.CONCLUSION: The best fit of the experimental data was achieved with a heterogeneous Langmuir‐Hinshelwood‐Hougen‐Watson model in which the rate controlling step is the dissociative adsorption of hydrogen. The activation energy was estimated as EH2 = 34.8 kJ mol−1. Copyright © 2012 Society of Chemical Industry
Non‐dispersive absorption of CO2 in parallel and cross‐flow membrane modules using EMISE
Authors: Albo Jonathan , Irabien Angel 
Published: April 2012

AbstractBACKGROUND: This paper reports an analysis of the mass transfer behaviour of CO2 absorption in hollow fibre membrane modules in parallel and cross‐flow dispositions. The ionic liquid EMISE, 1‐ethyl‐3‐methylimidazolium ethylsulfate, is used to achieve a zero solvent emission process and the experimental results are compared with CO2 permeation through the membrane, without solvent in the lumenside.RESULTS: Overall mass transfer coefficients Koverall, CF = (0.74 ± 0.02) × 10−6 m s−1 and Koverall, PF = (0.37 ± 0.018) × 10−6 m s−1 were obtained for cross‐flow and parallel flow, respectively. These values are one order of magnitude lower than the coefficient obtained in permeability experiments, Koverall, PERM = (6.16 ± 0.1) × 10−6 m s−1, indicating the influence of the absorption in the process. Including the specific surface and gas volume of each contactor in the analysis, a similar value of a first‐order kinetic rate constant, KR = 2.7 × 10−3 s−1 is obtained, showing that the interfacial chemical reaction CO2‐ionic liquid is the slow step in the absorption process.CONCLUSION: An interfacial chemical reaction rate constant KR = 2.7 × 10−3 s−1, describes the behaviour of the CO2 absorption in the ionic liquid EMISE using membrane contactors in parallel and cross‐flow dispositions. Copyright © 2012 Society of Chemical Industry
Activation of peroxisome proliferator‐activated receptor‐δ attenuates glutamate‐induced neurotoxicity in HT22 mouse hippocampal cells
Authors: Jin Hana , Ham Sun Ah , Kim Min Young , Woo Im Sun , Kang Eun Sil , Hwang Jung Seok , Lee Ko‐Woon , Kim Hye Jung , Roh Gu Seob , Lim Dae‐Seog , Kang Dawon , Seo Han Geuk 
Published: April 2012

AbstractGlutamate‐induced neurotoxicity has been implicated in the pathogenesis of neurodegenerative disorders; however, little is known about the cellular events that underlie neurotoxicity or how to impede these events. This study demonstrates that peroxisome proliferator‐activated receptor (PPAR)‐δ regulates glutamate‐induced neurotoxicity in HT22 mouse hippocampal cells. Activation of PPARδ by GW501516, a specific ligand, significantly inhibited glutamate‐induced cell death and reactive oxygen species (ROS) production in HT22 cells. The siRNA‐mediated knockdown of PPARδ abrogated the effects of GW501516 in neuronal toxicity and ROS production induced by glutamate. In addition, ligand‐activated PPARδ reduced the glutamate‐induced level of intracellular calcium ions (Ca2+) by modulating the influx of Ca2+ from the extracellular space. Similarly, glutamate‐induced cell death and intracellular Ca2+ levels were attenuated in the presence of LY83583, an inhibitor of soluble guanylyl cyclase. Taken together, these results suggest that PPARδ plays an important role in glutamate‐induced neurotoxicity by modulating oxidative stress and Ca2+ influx. © 2012 Wiley Periodicals, Inc.
Quantifying parameter uncertainty and assessing the skill of exponential dispersion rainfall simulation models
Authors: Gronewold Andrew D. , Stow Craig A. , Crooks James L. , Hunter Timothy S. 
Published: April 2012

AbstractThe exponential dispersion model (EDM) has been demonstrated as an effective tool for quantifying rainfall dynamics across monthly time scales by simultaneously modelling discrete and continuous variables in a single probability density function. Recent applications of the EDM have included development and implementation of statistical software packages for automatically conditioning model parameters on historical time series data. Here, we advance the application of the EDM through an analysis of rainfall records in the North American Laurentian Great Lakes by implementing the EDM in a Bayesian Markov chain Monte Carlo (MCMC) framework which explicitly acknowledges historic rainfall variability and reflects that variability through uncertainty and correlation in model parameters and simulated rainfall metrics. We find, through a novel probabilistic assessment of skill, that the EDM reproduces the magnitude, variability, and occurrence of daily rainfall, but does not fully capture temporal autocorrelation on a daily time scale. These findings have significant implications for the extent to which the EDM can serve as a tool for supporting regional climate assessments, for downscaling regional climate scenarios into local‐scale rainfall time series simulations, and for assessing trends in the historical climate record. Copyright © 2012 Royal Meteorological Society
Virgin olive oil phenolic profile and variability in progenies from olive crosses
Authors: El Riachy Milad , Priego‐Capote Feliciano , León Lorenzo , Luque de Castro María Dolores , Rallo Luis 
Published: April 2012

AbstractBACKGROUND: The progressive transformation of olive growing and the increasing demands for high‐quality monovarietal virgin olive oil (VOO) have triggered interest in olive breeding programs, in which the evaluation of the new genotypes is the basis for obtaining new olive cultivars. In this work, the phenolic composition of VOOs from two progenies from crosses between ‘Arbequina’, ‘Arbosana’ and ‘Sikitita’ has been evaluated along two years.RESULTS: A higher degree of variation was observed in segregating population as compared to genitors. The results also showed that the variability within crosses constitutes the major contribution to total variance for all considered parameters (>92% of total sum of squares). All compounds under study were present in oils obtained in both years; however, clear differences in their concentrations were observed between years.CONCLUSION: Olive breeding can indeed provide genotypes that produce oils with improved phenolic profiles as compared to traditional cultivars. In addition, the data showed that selection as a function of tyrosol content could be achieved in only one crop year. Finally, p‐coumaric acid was the unique component able to discriminate between both crop years under study. Copyright © 2012 Society of Chemical Industry
A climatology of lee waves over the UK derived from model forecasts
Authors: Vosper S. B. , Wells H. , Sinclair J. A. , Sheridan P. F. 
Published: April 2012

ABSTRACTA lee wave forecast system has been run operationally at the UK Met Office since 2006. The forecasts are produced by a numerical model for flow over complex terrain (3DVOM) which is run for five separate hilly regions across the UK. These regions cover Dartmoor (southwest England), Snowdonia (north Wales), Cumbria and the Pennines (northern England), the Grampians (Scotland) and the Mourne and Sperrin mountains (Northern Ireland). Examples of verification of the model forecasts against aircraft and satellite observations are presented. Three years of forecast data for these regions have been used to generate a lee wave climatology for the UK. The model predicts large geographical differences, with lee waves occurring least frequently over Dartmoor and most frequently over Snowdonia and the Grampians. Large amplitude waves, with peak vertical velocities exceeding 3 m s−1 at 700 hPa or above, are more common in forecasts for the Grampian region than others. Lee waves occur more frequently in forecasts during winter months than in summer. The most favourable conditions are those in which there is little turning of the lower tropospheric winds and analysis suggests that the waves are typically trapped in the lower troposphere. The influence of the lee waves on the near‐surface flow has also been investigated. Large accelerations and flow deflections can occur beneath the waves. It is suggested that the latter correspond to turbulent lee wave rotors. Preferred locations for this behaviour have been identified in the model forecasts for the Grampians and Pennines.