bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bifurcation stenting in patients with ST‐Segment elevation myocardial infarction
Authors: Kwan Tak W. , Gujja Karthik , Liou Michael C. , Huang Yili , Wong Sally , Coppola John , Chen Shao‐Liang 
Published: March 2013

ObjectiveWe sought to study the clinical outcomes of bifurcation stenting in patients who presented with stent thrombosis segment elevation myocardial infarction (STEMI).BackgroundPatients with STEMI are usually excluded from randomized bifurcation studies. There is limited information for bifurcation stenting in this population.MethodsAll STEMI patients who were randomized were retrospectively reviewed from DKCRUSH II (double kissing, double crush) database. DKCRUSH II is a multicenter, randomized study of provisional stenting (PS) versus the DK crush stenting techniques. A total of 370 patients with bifurcation lesions were randomized and of this group a total of 63 patients with STEMI were found. This group of STEMI included 30 patients in the PS group and 33 patients in the DK crush stenting group.ResultsThere were no differences in terms of contrast used, procedure time, and fluoroscopy time. Procedural success rates were 97% in all patients with STEMI, with 100% in the PS group and 94% in the DK crush stenting group. During the procedure, there were two patients with less than TIMI 3 (thrombolysis in myocardial infarction) flow in the main vessel of the DK crush group However, TIMI 3 flow was 100% in the side branch for both groups. Cumulative 12‐month major adverse cardiac event (MACE) was 22% in the whole STEMI group, whereas PS and DK crush groups were 23% versus 21%, respectively (P = NS). There were no differences in in‐hospital, 6‐month, and 12‐month MACE in these two groups. At 6 and 12 months, there were two cardiac deaths in the PS group but without statistical significance when compared with the DK crush stenting group (7% vs. 0%, P = NS).ConclusionBifurcation stenting in patients with STEMI is safe and feasible. The immediate and midterm clinical outcomes were comparable between PS and DK crush stenting. © 2013 Wiley Periodicals, Inc.
Computational Fluid Dynamics Simulation of Mass Transfer in the Separation of Fermentation Products Using Nanoporous Membranes
Authors: Ranjbar M. , Shirazian S. , Ghafarnejad Parto S. , Ahmadi M. 
Published: March 2013

AbstractThe simulation of fermentation product separation using nanoporous membranes is presented. The aim of the simulation was to predict the performance of an extraction process to remove compounds from aqueous solutions. The simulation was conducted using computational fluid dynamics techniques for the solution of governing equations. The system studied was a membrane‐based extractor of acetone from aqueous solutions using near‐critical CO2 as solvent. The predicted extraction percentages obtained by the simulations were compared to experimental values reported in the literature and showed very good agreement. The simulation can predict the concentration profile of acetone in the membrane and also predicts the formation of a concentration boundary layer.
O‐Heterocyclic Embeurekols from Embellisia eureka, an Endophyte of Cladanthus arabicus
Authors: Ebrahim Weaam , Aly Amal H. , Mándi Attila , Wray Victor , Essassi El Mokhtar , Ouchbani Tarik , Bouhfid Rachid , Lin Wenhan , Proksch Peter , Kurtán Tibor , Debbab Abdessamad 
Published: March 2013

ABSTRACTThree new polyketides (-)-1, (+)-1, and 2) were isolated from the EtOAc extract of the fungus Embellisia eureka, an endophyte of the Moroccan plant Cladanthus arabicus (Asteraceae). The structures of these new compounds were determined on the basis of one‐ and two‐dimensional NMR spectroscopy as well as by high‐resolution mass spectrometry. The absolute configurations of (-)-1, (+)-1, and 2 were determined by TDDFT ECD calculations of solution conformers, online HPLC‐ECD analysis, and the modified Mosher method. Chirality 25:250–256, 2013. © 2013 Wiley Periodicals, Inc.
Enhancement of the liquid feed distribution in gas solid fluidised beds by non‐mechanically induced nozzle pulsations
Authors: Sabouni Rana , Briens Cedric , Berruti Franco 
Published: March 2013

AbstractThe effect of non‐mechanically induced nozzle pulsations was investigated in the current work, and it was found that appropriately tailored spray nozzles pulsations resulted in the dramatic improvement of the liquid feed spray distribution on particles of a fluidised bed. Non‐mechanically induced pulsations were imposed on the liquid spray, using liquid and gas circuits that favour the development of beneficial pulsations. The resulting effect on liquid dispersion on the fluidised bed particles was determined with a conductance method. © 2013 Canadian Society for Chemical Engineering
Thermodiffusion effect for a non‐associating mixture in a multi layered system of porous media and fluid layers heated from above
Authors: Jawad H. , Bataller H. , Saghir M.Z. 
Published: March 2013

AbstractA numerical simulation has been conducted to investigate the thermodiffusion phenomenon in a porous layer sandwiched between two liquid layers that are wetted with water alcohol mixtures at different water concentrations. Two different binary mixtures with different Soret coefficients have been used in the entire system, one with a negative Soret coefficient and the other one with a positive sign. The results show that the direction of the component migration in a porous layer depends on the sign of the Soret coefficient. For a binary mixture with a negative Soret coefficient, such as 10% isopropanol and 90% water, the heavier species move in the direction of the hot surface, while for a mixture with a positive Soret effect, such as 50% isopropanol and 50% water, the heavier species migrate toward the colder surface. To reduce the gravity effect, the cavity was heated from the top with different temperatures ranging from 5 to 20 K.
Semicontinuous separation of dimethyl ether (DME) produced from biomass
Authors: Pascall Alicia , Adams Thomas A. 
Published: March 2013

AbstractA ternary semicontinuous system for the separation of bio‐dimethyl ether from methanol and water is presented. The performance of eight potential control configurations, including the application of temperature inferential control, is evaluated. Dynamic simulations of the semicontinuous system and associated control scheme demonstrate that the temperature inferential control configuration is effective in achieving the separation objectives while remaining within operational limits. The semicontinuous system using the inferential temperature control scheme is simulated and shown to be economically preferable to the traditional continuous process for a range of production rates. © 2013 Canadian Society for Chemical Engineering
Chemoselective CaO‐Mediated Acylation of Alcohols and Amines in 2‐Methyltetrahydrofuran
Authors: Pace Vittorio , Hoyos Pilar , Alcántara Andrés R. , Holzer Wolfgang 
Published: March 2013

AbstractCalcium oxide is proposed as an innocuous acid scavenger for the chemoselective synthesis of amide‐ and ester‐type compounds. Although these molecules have wide spread applications in organic and pharmaceutical chemistry, and a large number of routes have been designed for their synthesis, the development of more efficient and environmentally friendly acylation strategies remains an ongoing challenge. The use of CaO allows for the stoichiometric acylation of primary alcohols in the presence of phenols or tertiary alcohols; amines can also be subjected to acylation reactions in the presence of hydroxyl groups. Chirality is obtained through acylation if the starting material is an optically pure alcohol or if a chiral acylating agent is used. Furthermore, the use of 2‐methyltetrahydrofuran (2‐MeTHF), a more ecofriendly solvent, leads to maximized yields. This protocol is successfully applied to the synthesis of an interesting N‐aryloxazolidin‐2‐one intermediate for the preparation of linezolid‐type compounds.
The Development of end‐ and beginning‐state comfort in a cup manipulation task
Authors: Scharoun Sara M. , Bryden Pamela J. 
Published: March 2013

AbstractEnd‐state comfort (ESC) is the tendency to assume comfortable postures at the end of simple object manipulation rather than at the start; and therefore has been used to assess the behavioral effects of motor planning. Adult‐like patterns have been observed at age 9. Observations can extend to joint‐action, such that adults consider the beginning‐state comfort (BSC) of another, without sacrificing ESC; however, trends in children have yet to be delineated. This study investigated the development of ESC and BSC in a cup manipulation task. Three to 12‐year‐olds and adults were asked to pick up a cup and (1) pour a glass of water or (2) pass it to the researcher to pour. Paralleling previous findings, adult‐like patterns of ESC were observed at age 9. Adding to the literature, adult‐like evidence of BSC emerged at the age of 7. Therefore, 7‐year‐olds consider another's BSC; however, cannot facilitate ESC until age 9. © 2013 Wiley Periodicals, Inc. © 2013 Wiley Periodicals, Inc. Dev Psychobiol 56: 407–420, 2014.
The Best of Polyoxometalates
Authors: Kortz Ulrich , Liu Tianbo 
Published: March 2013

AbstractAn overview of the papers in this cluster issue is presented.“...Guest Editors Ulrich Kortz and Tianbo Liu provide a glimpse into the highlights of the many achievements of Michael Pope, who has been the most influential chemist in the field of polyoxometalates...”Read more by the Guest Editors on p. 1559.
Molecular phylogeny and ecogeography of Onobrychis viciifolia Scop. (Fabaceae) based on nrDNA ITS sequences and genomic ISSR fingerprinting
Authors: Toluei Zeinab , Ranjbar Massoud , Wink Michael , Atri Morteza 
Published: March 2013

AbstractIn this study 40 specimens from 8 representative Iranian populations of Onobrychis viciifolia SCOP. were collected from their natural habitats. The specimens were biometrically assessed using 43 quantitative and 15 qualitative morphological characters. At each sample site we recorded ecogeographical variables. In order to evaluate the difference between the variation due to phenotypic responses and genetic adaptation, we generated nucleotide sequence data from the internal transcribed spacer of the nuclear rDNA genes (ITS) and carried out genomic fingerprints using inter‐simple sequence repeat PCR (ISSR). Cluster analysis of morphological characters divided the eight populations into three major groups. Leaf length, leaflet length and width, calyx length, plant height, and stem length were introduced as diagnostic characters for three different morphological groups. Furthermore, canonical correspondence analysis (CCA) of ecogeographical data showed correlations between morphological variations and ecogeographical factors. Clay%, saturation percentage (SP), total neutralizing value (TNV%), texture, minimum temperature, and geographic separation were the main environmental variables associated with morphological groups of O. viciifolia. ISSR analysis revealed three main groups which are in correspondence with morphological groups, indicating that the three morphological groups have been shaped by genetic and phenotypic responses to environmental conditions. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
On the nature of meandering of the springtime western boundary current in the Bay of Bengal
Authors: Gangopadhyay Avijit , Bharat Raj G. N. , Chaudhuri Ayan H. , Babu M. T. , Sengupta Debasis 
Published: March 2013

AbstractWe present evidence that the springtime western boundary current (WBC) in the Bay of Bengal is a continuous northward‐flowing current from about 12°N to 17°N, which then separates from the coast at around 18°N. We first revisit a hydrographic data set collected in 1987 from a potential vorticity perspective, and then analyze absolute dynamic height maps from satellite altimeters during the period 2000–2010. The altimetric maps suggest that the mean configuration of the WBC is that of an intense current with two anticyclonic eddies on the offshore side, which are part of the basin‐wide anticyclonic circulation. The WBC consistently separates from the coast at around 18°N in all years between 2000 and 2010. The path of the eastward‐flowing mean stream after separation appears to be consistent with isolines of f/H and with Ertel's potential vorticity, based on an analysis of the hydrographic data from 1987.
Non‐Darcy assisted flow along a channel with an open cavity filled with water–TiO2 nanofluid
Authors: Nasrin Rehena , Alim M.A. 
Published: March 2013

AbstractNumerical investigation on forced (assisted) convection heat transfer in a two‐dimensional horizontal porous channel with an open cavity is studied in this article. A non‐uniform heat flux is considered to be located on the bottom surface of the cavity. The rest of the surfaces are taken to be perfectly insulated. The physical domain is filled with a water‐based nanofluid containing TiO2 nanoparticles. The fluid enters from the left and exits from the right with initial velocity Ui and temperature Ti. Governing equations are discretized using the penalty finite element method. The simulation is carried out for a wide range of Reynolds number Re (= 10–500) and Darcy number Da (= 10−5–∞). Results are presented in the form of streamlines, isothermal lines, local and average Nusselt numbers, average temperatures of the fluid, horizontal and vertical velocities at mid‐height of the channel and mean velocity fields for various Re and Da. The enhancement of heat transfer rate is caused by the increasing Re and falling Da. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21046
Biomathematical study of non‐Newtonian nanoﬂuid in a diverging tube
Authors: Sher Akbar Noreen , Nadeem S. 
Published: March 2013

AbstractThe present article deals with the peristaltic ﬂow of a nano‐Eyring Prandtl ﬂuid model in a diverging tube. The governing equations for the considered model in view of the nanoparticles are presented in cylindrical coordinates using long wavelength and low Reynolds number approximation. The resulting nonlinear diﬀerential equations are solved for velocity, temperature, nanoparticle, and pressure gradient using the homotopy perturbation method. Numerical integration has been carried out for pressure rise, frictional forces, velocity, temperature, and nanoparticles. The numerical results are discussed through graphs. The eﬀects of various emerging parameters are investigated for ﬁve diﬀerent peristaltic waves. Streamlines have been plotted at the end of the article for the considered waveforms. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21047
Effect of drainage and wildfire on peat hydrophysical properties
Authors: Sherwood J. H. , Kettridge N. , Thompson D. K. , Morris P. J. , Silins U. , Waddington J. M. 
Published: March 2013

AbstractConsecutive multiple disturbances to northern peatlands can dramatically impact peat hydrophysical properties. We examine the impact of a double disturbance (drainage and wildfire) on the hydrophysical and moisture retention properties of peat, a key regulator of peatland ecohydrological resilience, and compare this with the impact to each individual disturbance (drainage and wildfire). The compound effect of drainage and wildfire resulted in a shift of the surface datum down the peat profile, revealing denser peat. Less‐dense near‐surface peats that regulate water‐table position and near‐surface moisture content, both favourable to Sphagnum recolonization, were lost. At a drained peatland that was then subject to wildfire, peat bulk density increased by 14.1%, von Post humification class increased by two categories and water retention increased by 15.6%, compared with an adjacent burned but undrained (single disturbance) portion of the fen. We discuss the key hydrophysical metrics of peatland vulnerability and outline how they are affected by the isolated impacts of drainage and wildfire, as well as their combined effects. We demonstrate that multiple peatland disturbances have likely led to an increase in hydrological limitations to Sphagnum recovery, which may impact peatland ecohydrological resilience. Copyright © 2013 John Wiley & Sons, Ltd.
WATER HARVESTING FROM FOG AND AIR HUMIDITY IN THE WARM AND COASTAL REGIONS IN THE SOUTH OF IRAN
Authors: Davtalab Rahman , Salamat Alireza , Oji Ruhollah 
Published: March 2013

ABSTRACTThe south coastal area of Iran, being adjacent to the humidity of the Persian Gulf and Oman Sea in addition to its high temperature and its high capacity for absorbing humidity, has a great potential for water harvesting from fog and air humidity. In this research, data have been collected from 10 synoptic stations adjacent to the Persian Gulf and Oman Sea, in order to investigate water harvesting from fog and air humidity. The data used in this study included hourly dry and wet temperature, relative humidity, wind direction and velocity and dew point temperature. By the use of these data, various parameters such as atmospheric water vapour pressure, saturated vapour pressure and the absolute humidity of the atmosphere were estimated. Finally, according to the investigations carried out in this study, it was clear that the cited regions had the potential to harvest fog water for 160–360 days. This is whilst the average number of foggy days in the region is 41 maximally. In addition the annual mean water harvested through this technique varies between 6.7 l m‾2 day‾1 at Abadan station and 156 l m‾2 day‾1 at Chabahar station. It is worth noting that the maximum amount of water harvested from the stations near the coastal areas occurs during the summer while at stations far from the coastal areas this happens during the winter. Copyright © 2013 John Wiley & Sons, Ltd.
Alterations in mucosal neuropeptides in patients with irritable bowel syndrome and ulcerative colitis in remission: A role in pain symptom generation?
Authors: Keszthelyi D. , Troost F.J. , Jonkers D.M. , Helyes Z. , Hamer H.M. , Ludidi S. , Vanhoutvin S. , Venema K. , Dekker J. , Szolcsányi J. , Masclee A.A. 
Published: March 2013

AbstractBackgroundIrritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by chronic abdominal pain. The transient receptor potential vanilloid 1 (TRPV1) channel, which is involved in visceral pain signalling, has been shown to be up‐regulated in IBS. Activation of TRPV1 leads to the release of neuropeptides, such as somatostatin and substance P (SP). We hypothesized that increased pain perception in IBS could be explained by increased transcription in TRPV1 and/or altered levels of neuropeptides. We therefore assessed the transcription of TRPV1 and the mucosal concentration of somatostatin and SP in IBS in comparison to healthy volunteers and patients with ulcerative colitis (UC) in remission as disease controls, and to ascertain their relationship to pain symptoms.MethodSigmoid colonic mucosal samples were collected from 12 patients with IBS, 34 patients with UC in remission and 9 healthy volunteers, in which groups TRPV1 mRNA levels were determined using quantitative polymerase chain reaction and neuropeptide concentrations by radioimmunoassay. Pain symptom intensity was determined by questionnaires.ResultsTranscription of TRPV1 as well as the concentration of neuropeptides were significantly higher in IBS, but only the former correlated with pain symptom severity.ConclusionIncreased transcription of TRPV1 may provide a possible explanation for pain generation in IBS. While the neuropeptides SP and somatostatin were both found to be increased in IBS, these changes are not sufficient to explain pain generation. Pain generation in IBS is probably explained by a complex redundancy in the regulation of local nociceptive mechanisms, which remains a subject of intensive investigation.
Alteration of pain recognition in schizophrenia
Authors: Wojakiewicz A. , Januel D. , Braha S. , Prkachin K. , Danziger N. , Bouhassira D. 
Published: March 2013

AbstractBackgroundSchizophrenia patients display impaired recognition of their own emotions and those of others and deficits in several domains of empathy. The first‐person experience of pain and observing others in pain normally trigger strong emotional mechanisms. We therefore hypothesized that schizophrenia patients would display impaired recognition and categorization of both their own pain and the pain of others.MethodsWe studied 29 patients (18 men/11 women; 36 ± 13 years old) with paranoid schizophrenia‐spectrum disorder and 27 healthy volunteers (20 men/7 women; 31 ± 9 years old) matched for age, gender, IQ and socio‐cultural level. We assessed symptom severity and theory of mind. The participants' ability to detect and categorize pain in others was assessed with the sensitivity to expressions of pain (STEP) test, which is based on facial expressions, and another dynamic test involving a series of video sequences showing various pain‐inducing events. The ability of patients to evaluate their own pain was assessed with the situational pain questionnaire (SPQ), which includes a series of questions assessing how one would expect to feel in different imaginary situations. Empathic tendencies were assessed with the interpersonal reactivity index.ResultsPatients and controls differed significantly in STEP, pain video and SPQ scores. By contrast with control subjects, the patients' pain judgements were not correlated with their affective or cognitive empathic capacities.ConclusionsSchizophrenic patients have a deficit of the identification and categorization of pain both in themselves and in others.
Standard and individually determined thermal pain stimuli induce similar brain activations
Authors: van den Bosch G.E. , van Hemmen J. , White T. , Tibboel D. , Peters J.W.B. , van der Geest J.N. 
Published: March 2013

AbstractBackgroundSeveral functional magnetic resonance imaging (fMRI) studies use thermal pain stimuli to determine brain activation patterns during pain. Studies use either a standard temperature condition for all participants or an individualized temperature condition based on the individually determined pain threshold of the participant. The aim of the present study was to compare both conditions in the same participants.MethodsEighteen healthy participants (21–29 years) underwent four fMRI runs, in each of which they received three types of thermal stimuli: neutral (32 °C), warm (37 °C) and painfully hot. In two runs, the painfully hot stimulus was set at a standard temperature of 46 °C; in the other two runs, the temperature was set at the subject's individual pain threshold (46–48 °C). fMRI (blood oxygen level dependent) was performed on a 1.5T MR scanner (GE Signa). Pre‐processing and statistical analyses were performed using Statistical Parametric Mapping (SPM8) software.ResultsWhile the stimulation temperatures were lower in the standard temperature condition, both conditions activated the same brain regions. When comparing the conditions directly to each other, we did not find significantly different grey matter activation patterns.ConclusionsThe similar activation patterns between the two conditions suggest that it is not necessary to use individualized stimuli per se. The temperature of 46 °C appeared to be an adequate temperature for standardized stimulation to observe significant brain activations related to thermal pain.