bluuebunny/crossref_metadata_2025_split huggingface dataset:
Re‐esterified oils from palm acid oil do not alter pork fatty acid composition
Authors: Tres Alba , Muzofa Farayi Martin , Vilarrasa Ester , Guardiola Francesc , Codony Rafael 
Published: July 2015

New fat products have been developed by chemically re‐esterifying acid oils (a by‐product of the food oil refining industry) with glycerol (a by‐product from biodiesel industry). These new products show lower free fatty acid content than acid oils and a fatty acid distribution within the positions of acylglycerols different from that of native oils. In this paper, we aim at assessing if the unique composition of re‐esterified palm oils (compared to native and acid oils) would affect pork and back fat fatty acid composition. A total of 24 pigs were fed one of the four experimental diets containing 4% experimental fat: native palm oil (PN), palm acid oil (PA), or two re‐esterified palm oils (PEL and PEH). Our results show that meat from pigs fed re‐esterified palm oils did not differ significantly in terms of total fatty acid and sn‐2 fatty acid compositions compared to PN or PA.Practical applications: Acid oils are by‐products of the food industry. They could be re‐utilized as feed ingredients but their free fatty acid content is usually high. High free fatty acid contents in diets have been related to low digestibility values when used in feed. New fat products have been developed by their chemical esterification with glycerol (a by‐product from biodiesel industry). Here, we have verified that these re‐esterified products would not alter pork fatty acid composition with respect to the use of native palm oil. Since results on productive parameters showed that they might increase feed efficiency and digestibility, overall the results support the re‐utilization of these fat by‐products in feed, alternative to the use of native palm oil or palm acid oil, provided that the benefits of the increase in feed efficiency counteract the cost of the esterification process.New fat products have been developed by chemically re‐esterifying palm acid oil (a by‐product of the palm oil refining industry) with glycerol. Compared to acid oils, they show a reduction of free fatty acids and an increase of partial acylglycerols. The fatty acid distribution within the positions of acylglycerols is different from that of native oils. This study has shown that their use in pig feed does not modify pork fatty acid composition compared to native or acid palm oil.
Application of esterase inhibitors: A possible new approach to protect unsaturated fatty acids from ruminal biohydrogenation
Authors: Sargolzehi Mohammad Mahdi , Naserian Abbasali , Asoodeh Ahmad , Roknabadi Masoumeh Rezaee , Shin Jong Suh , Ghassemi Nejad Jalil , Peng Jing Lun , Lee Bae Hun , Ji Do Hyeon , Haghparast Alireza , Mirshahi Ali , Arshami Javad , Goli Amir Afkhami , Valizadeh Reza , Sung Kyung Il 
Published: July 2015

General nutritional guidelines recommend reducing the consumption of fats originated from ruminant products. This is due to the ruminal biohydrogenation of unsaturated fatty acids (UFAs) which leads to the presence of unhealthy saturated or trans fats in ruminant products. Here, for the first time to our knowledge, we have focused on the main biochemical process which results in the saturation of UFAs. Rumen lipolytic activity (RLA) generates non‐esterified fatty acids (NEFAs) in the rumen, which are a prerequisite for the biohydrogenation process to occur. We have examined different concentrations of pyridostigmine bromide (PB), of reversible cholinesterase inhibitor, in batch cultures containing 80 mg soybean oil, as a source of triglyceride. PB is the main active compound of an FDA approved drug for the treatment of myasthenia gravis and also pretreatment against nerve gas in humans. Our hypothesis was to evaluate PB as an inhibitor for RLA. In normal conditions, soon after triglycerides enter the rumen, they are hydrolyzed as a result and free fatty acids undergo the biohydrogenation process. Our results indicated that no significant (P > 0.01) reduction in linoleic acid (C18:2, ω6) after 6 h incubation was observed for cultures containing PB with concentrations above 0.052 g/dL. We concluded that PB has the potential to inhibit RLA in cultures after 6 h of incubation. Such findings suggest the potential of PB to be utilized in vivo as a feed additive to inhibit biohydrogenation of unsaturated fatty acids in the rumen.Practical applications: The biohydrogenation of health benefitial unsaturated fatty acids in the rumen cause ruminant products, such as milk and meat, to contain highly saturated fats. Inhibition of rumen microbial lipolytic activity in vivo could increase the flow of unsaturated fatty acids for absorption and therefore, would have the potential to improve fatty acid composition of ruminant milk and meat. This would also have benefits for the animal.In normal ruminal fermentation, unsaturated fatty acids are hydrolyzed as a result of rumen lipolytic activity. Hydrolysis of lipids and production of non‐esterified fatty acids are prerequisite for biohydrogenation of unsaturated fatty acids. We have applied esterase inhibitors in vitro to investigate whether it is possible to block rumen lipolytic activity or not. Our objective was to introduce a new method to bypass unsaturated fatty acids to small intestine.
Exploring patterns of explicit and implicit anti‐gay attitudes in Muslims and Atheists
Authors: Anderson Joel , Koc Yasin 
Published: July 2015

AbstractResearch into the relationship between religion and anti‐gay attitudes frequently focuses on Christianity. We explored the role of religiosity dimensions, previous contact, and factors in the dual‐process motivation model as predictors of explicit and implicit anti‐gay attitudes in samples of Muslims and Atheists. The explicit and implicit attitudes of Muslims were more negative than the attitudes of Atheists. Explicit attitudes were more negative towards gay men than lesbians; implicit attitudes were negative towards gay men but were unexpectedly positive towards lesbians. In regression analyses, religious fundamentalism and extrinsic religious orientations (Study 1), and contact and right‐wing authoritarianism (Study 2) were strong significant predictors of explicit anti‐gay attitudes. Interestingly, none of the factors of interest predicted implicit anti‐gay attitudes. These findings reveal a strong link between Islam and explicit anti‐gay attitudes, but suggest that the relationship between religion and implicit anti‐gay attitudes may be more complex than previously thought.
When majority members exclude ethnic minorities: The impact of shame on the desire to object to immoral acts
Authors: Berndsen Mariëtte , Gausel Nicolay 
Published: July 2015

AbstractIn recent years, ethnic minorities have experienced an increase in acts of exclusion. In two studies, we demonstrated how ingroup members' felt shame about such immoral behavior explained their desire to pro‐socially object to this immorality by distancing from the perpetrating ingroup and by wanting to support the affected minorities. We showed how the desire to pro‐socially object varies as a function of national identification. As expected, nationally attached identifiers' felt shame for the immoral behavior was linked with greater willingness to pro‐socially object to it. The opposite pattern was found for nationally glorifying identifiers. In the second study, we found that anger directed at the ingroup partially explained the relationship between group‐based shame and the pro‐social desire to object. The results contribute to the literature on shame and pro‐social motivations by showing that distancing from the perpetrating ingroup can be considered as a pro‐social strategy rather than a defensive one.
Explicit but not implicit sexist beliefs predict benevolent and hostile sexist behavior
Authors: de Oliveira Laux Stephanie H. , Ksenofontov Inna , Becker Julia C. 
Published: July 2015

AbstractMuch work has been carried out on sexist attitudes, but only little on sexist behaviors. The goal of the present research was to close this gap by testing how a variety of benevolent and hostile sexist behaviors correlate with implicit and explicit sexist attitudes. In Study 1 (N = 126), we developed implicit association tests for benevolent sexism and hostile sexism and illustrated that implicit and explicit benevolent sexist beliefs, as well as implicit and explicit hostile sexist beliefs, were positively correlated. In Study 2 (N = 83 of Study 1), we tested whether implicit and explicit benevolent and hostile sexist attitudes correlate with benevolent and hostile sexist behaviors. As expected, explicit benevolent (but not hostile) sexist attitudes predicted benevolent sexist behavior, whereas explicit hostile (but not benevolent) sexist attitudes predicted hostile sexist behavior. Implicit sexist attitudes did not predict sexist behavior. The implications of these findings are discussed.
Electrochemical Behaviour and Rapid Determination of L‐Dopa at Electrochemically Pretreated Screen Printed Carbon Electrode
Authors: Rabinca Andreea Alexandra , Buleandra Mihaela , Balan Adriana , Stamatin Ioan , Ciucu Anton Alexandru 
Published: July 2015

AbstractA simple and rapid voltammetric method based on a disposable electrochemically pretreated screen‐printed carbon electrode is proposed for the determination of L‐dopa. Under optimum differential pulse voltammetry conditions a limit of detection of 3.6×10−7 M for L‐dopa was obtained. The method was successfully applied to the determination of L‐dopa in a commercial pharmaceutical formulation.
Construction and Application of Flow Enzymatic Biosensor Based of Silver Solid Amalgam Electrode for Determination of Sarcosine
Authors: Josypčuk Oksana , Barek Jiří , Josypčuk Bohdan 
Published: July 2015

AbstractIn this paper, the flow amperometric enzymatic biosensor based on polished silver solid amalgam electrode for determination of sarcosine in model sample under flow injection analysis conditions is presented. The biosensor works on principle of electrochemical detection of oxygen decrease during enzymatic reaction which is directly proportional to the concentration of sarcosine in sample. The whole preparation process takes about 3 h. The RSD of repeatability of 10 consecutive measurements is 1.6 % (csarcosine=1.0×10−4 mol dm−3). Under optimal conditions the calibration dependence was linear in the range 7.5×10−6–5.0×10−4 mol dm−3 and limit of detection was 2.0×10−6 mol dm−3.
A Simple and Renewable Nanoporous Gold‐based Electrochemical Sensor for Bisphenol A Detection
Authors: Yan Xupeng , Zhou Chuqing , Yan Yan , Zhu Ye 
Published: July 2015

AbstractA sensitive and simple electrochemical sensor based on nanoporous gold (NPG) was developed for the detection of bisphenol A (BPA). NPG was prepared by the dealloying method. The NPG modified glassy carbon electrode (GCE) displayed excellent catalytic activity towards the electrooxidation of BPA. The mechanism of the electrooxidation of BPA on NPG/GCE sensor was inferred. The sensor showed a linear range from 0.1 μM to 50 μM with a detection limit of 12.1 nM BPA. Specially, a simple but effective approach was attempted to renew the used sensor. The application of the sensor for real sample analysis was demonstrated.
Anti‐cancer Herbal Drug Berberine – Sensitive Determination Using Boron‐doped Diamond Electrode
Authors: Stanković Dalibor M. , Samphao Anchalee , Kalcher Kurt 
Published: July 2015

AbstractDetermination of berberine, an isoquinoline plant alkaloid, with antibacterial, antiparasitic, antifungal, hypotensive and antitumoral effects, was proposed by introducing square wave voltammetry on boron‐doped diamond electrode. At optimized experimental parameters, in Britton‐Robinson buffer solution pH 5 berberine provides 3 oxidation peaks (+0.63; +1.14 and +1.34 V) and one reduction (+0.15 V) (vs. Ag/AgCl electrode), with good repeatability (relative standard deviation of 2.6 % and 1.9 % for 8 measurements at 0.5 and 10 µM concentration level, respectively). Calibration curve was linear in wade linear range from 0.1 to 50 µM with limit of detection of 0.04 µM. The proposed procedure was successfully applied for the determination of berberine in seed extract from Argemone mexicana with satisfactory recovery (102–102.6 %). The developed method may represent a sensitive alternative to highly toxic mercury electrodes, modified electrodes and chromatographic methods.
Enhanced Hydrogen Peroxide Sensing Based on Tetraruthenated Porphyrins/Nafion/Glassy Carbon‐modified Electrodes via Incorporating of Carbon Nanotubes
Authors: Calfumán Karla , Quezada Diego , Isaacs Mauricio , Bollo Soledad 
Published: July 2015

AbstractThe incorporation of carbon nanotubes to a Nafion/tetraruthenated cobalt porphyrin/ glassy carbon electrode (GC/Nf/CoTRP vs GC/Nf/CNTCoTRP) enhanced the amperometric determination of hydrogen peroxide. Both electrodes produced a decrease in the overpotential required for the hydrogen peroxide oxidation in about 100 mV compared to glassy carbon under the same experimental conditions. Nevertheless, for GC/Nf/CNT/CoTRP, the increase in the current is remarkable. The GC/Nf/CoTRP modified electrode gave no significant analitycal signal for hydrogen peroxide reduction. Moreover, a great increase in current is observed with GC/Nf/CNT/CoTRP at −150mV which suggests a significant increase in the sensitivity of the modified electrode. Scanning electrochemical microscopy (SECM) revealed an enhancement in the electroactivity of the GC/Nf/CNT/CoTRP modified electrode. This fact has been explained in terms of enhanced homogeneity of the electrodic surface as a consecuence of better dispersibility of CNT‐CoTRP produced by a Nafion polyelectrolyte.
Limitations on linear elastic procedures in performance assessment of regular frames
Authors: Sucuoğlu Halûk , Özçamur Uğurcan 
Published: July 2015

SummaryLinear elastic analysis procedures are employed exclusively in the traditional seismic design of new structures and widely employed in the seismic assessment of existing structures. It is also a convenient tool for the initial checking of deformations in displacement‐based design. The limitations that should be imposed on linear elastic procedures have been evaluated in this study by comparing the deformation‐based response quantities obtained from response spectrum analysis with those from the nonlinear time history analysis. Both procedures were applied to different design variants of 5, 8, and 12 story moment frames, subjected to 20 strong motion components exhibiting a variety of intensities. Member plastic rotations and interstory drift ratios were employed as the basic response parameter in performance assessment. It has been found that average column demand to capacity ratio (DCR) (the ratio of flexural demand from linear elastic analysis to flexural capacity) and average beam DCR at the critical story are the most effective parameters in determining the validity range of linear elastic procedures in regular moment frames. Limiting values for these response parameters are proposed. Furthermore, amplification factors for member rotation demands predicted by the linear procedures are suggested for moment frames when these limiting values are exceeded. These factors ensure that the amplified linear elastic rotations are not smaller than 84 percentile (mean – 1sigma) of the rotations obtained from nonlinear time history analysis. Copyright © 2015 John Wiley & Sons, Ltd.
The anatomy of effective discharge: the dynamics of coarse sediment transport revealed using continuous bedload monitoring in a gravel‐bed river during a very wet year
Authors: Downs Peter W. , Soar Philip J. , Taylor Alex 
Published: July 2015

AbstractIndirect, passive approaches for monitoring coarse bedload transport could allow cheaper, safer, higher‐resolution, longer‐term data that revolutionises bedload understanding and informs river management. Here, insights provided by seismic impact plates in a downstream reach of a flashy gravel‐bed river (River Avon, Devon, UK) are explored in the context of plate performance. Monitoring of a centrally‐situated plate (IP1) during an extremely wet 12‐month period demonstrated that impacts were related to discharge as a measure of transport potential (R2 = 0.38) but that factors other than transport limitations are important. Analysis of discrete flow events revealed consistent rising‐limb and falling‐limb impact spikes biased toward the latter for larger events. Such patterns may result from disruption of the upstream armour layer (rising limb) and supply enhancements related to both upstream mass bank failures and/or flood routing of non‐local sediment sources (falling limb). Installation of additional impact plates indicated that plate IP1 was indeed dominantly related to instantaneous discharge, that a three‐plate lateral array somewhat better explained impact variability (R2 = 0.49), and that the bedload track shifts laterally with discharge. Aggregating event‐total IP1 impacts against volumetric discharge further increases explanation as intra‐event and stochastic bedload factors are subsumed but left 26% unexplained variance related to the unsampled bedload mass, inter‐event supply differences, and attributes of plate performance. Annualising the data created an impact‐based 'effective discharge’ for this extremely wet year that was closer to morphological bar‐full in magnitude than bankfull, but the preceding results imply this outcome is related as much to supply limitations as transport limitations. Overall, passive approaches offer a liberating prospect for bedload monitoring, capable of producing insights only achievable through high resolution, extended time periods. Such results could potentially inform threshold conditions and geomorphological effectiveness of flows for future river management strategies. Copyright © 2015 John Wiley & Sons, Ltd.
Morphologic and sedimentologic patterns of active aeolian dune‐fields on the east coast of Maranhão, northeast Brazil
Authors: Hilbert Natalia Naches , Guedes Carlos C. F. , Giannini Paulo C. F. 
Published: July 2015

AbstractThe eastern portion of the Maranhão coast is characterized by large active dune‐fields located in a tropical setting. This article combines the analysis of dune‐field morphologic patterns with the classical analysis of grain size and heavy minerals to study the sedimentary dynamics of the active aeolian system in this region. Based on the heavy mineral analysis, the main sedimentary suppliers feeding the system are the westward alongshore drift bringing sand from the coast east of the Parnaíba River mouth and the river itself. The absence of well‐defined variation patterns of the two morphometric parameters studied, dune spacing and crest length, reflects complex sedimentary dynamics and transport pathways, inside the aeolian system, despite the unidirectional wind. During the wet season, the interdune plains are flooded and the system is intensely reworked by intermittent drainages. During the dry season, the deposits formed by the drainages and interdune lakes become temporary internal sedimentary sources for the system. Due to this combined aeolian‐fluvial transport, the sediment source area has a planar geometry, with contributions from the beach and interdune plains, and not linear as expected in a typical case of source only in the beach. The areal limits of the dune‐fields is the main boundary condition controlling the dune‐field patterns, as dune spacing and crest length, by changing the sedimentary inflow–outflow balance and interactions between migration dunes. Copyright © 2015 John Wiley & Sons, Ltd.
Validation of a standard field test method in four countries to assess the toxicity of residues in dung of cattle treated with veterinary medical products
Authors: Floate Kevin D. , Düring Rolf-Alexander , Hanafi Jamal , Jud Priska , Lahr Joost , Lumaret Jean-Pierre , Scheffczyk Adam , Tixier Thomas , Wohde Manuel , Römbke Jörg , Sautot Lucille , Blanckenhorn Wolf U. 
Published: July 2015

Abstract

Registration of veterinary medical products includes the provision that field tests may be required to assess potential nontarget effects associated with the excretion of product residues in dung of treated livestock (phase II, tier B testing). However, regulatory agencies provide no guidance on the format of these tests. In the present study, the authors report on the development of a standardized field test method designed to serve as a tier B test. Dung was collected from cattle before and up to 2 mo after treatment with a topical application of a test compound (ivermectin). Pats formed of dung from the different treatments were placed concurrently in the field to be colonized by insects. The abundance, richness, and diversity of insects developing from egg to adult in these pats were compared across treatments using analysis of variance tests. Regression analyses were used to regress abundance, richness, and diversity against residue concentrations in each treatment. Results of the regression were used to estimate mean lethal concentration (LC50) values. The robustness of the method and the repeatability of its findings were assessed concurrently in 4 countries (Canada, France, Switzerland, and The Netherlands) in climatically diverse ecoregions. Results were generally consistent across countries, and support the method's formal adoption by the European Union to assess the effects of veterinary medical product residues on the composition and diversity of insects in dung of treated livestock. Environ Toxicol Chem 2016;35:1934–1946. © 2015 Crown in the right of Canada. Published by Wiley Periodicals Inc., on behalf of SETAC.
Copper oxide nanoparticles inhibit the metabolic activity of Saccharomyces cerevisiae
Authors: Mashock Michael J. , Kappell Anthony D. , Hallaj Nadia , Hristova Krassimira R. 
Published: July 2015

Abstract

Copper oxide nanoparticles (CuO NPs) are used increasingly in industrial applications and consumer products and thus may pose risk to human and environmental health. The interaction of CuO NPs with complex media and the impact on cell metabolism when exposed to sublethal concentrations are largely unknown. In the present study, the short-term effects of 2 different sized manufactured CuO NPs on metabolic activity of Saccharomyces cerevisiae were studied. The role of released Cu2+ during dissolution of NPs in the growth media and the CuO nanostructure were considered. Characterization showed that the 28 nm and 64 nm CuO NPs used in the present study have different primary diameter, similar hydrodynamic diameter, and significantly different concentrations of dissolved Cu2+ ions in the growth media released from the same initial NP mass. Exposures to CuO NPs or the released Cu2+ fraction, at doses that do not have impact on cell viability, showed significant inhibition on S. cerevisiae cellular metabolic activity. A greater CuO NP effect on the metabolic activity of S. cerevisiae growth under respiring conditions was observed. Under the tested conditions the observed metabolic inhibition from the NPs was not explained fully by the released Cu ions from the dissolving NPs. Environ Toxicol Chem 2016;35:134–143. © 2015 SETAC