bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radiology and the mobile device: Radiology in motion
Authors: Panughpath Sridhar G , Kalyanpur Arjun 
Published: May 2013

AbstractThe use of mobile devices is revolutionizing the way we communicate, interact, are entertained, and organize our lives. With healthcare in general and radiology in particular becoming increasingly digital, the use of such devices in radiologic practice is inevitable. This article reviews the current status of the use of mobile devices in the clinical practice of radiology, namely in emergency teleradiology. Technical parameters such as luminance and resolution are discussed. The article also discusses the benefits of such mobility vis-à-vis the current limitations of the technologies available.
Fusion of intravenous contrast-enhanced C-arm CT and pretreatment imaging for ablation margin assessment of liver tumors: A preliminary study
Authors: Iwazawa Jin , Hashimoto Naoko , Mitani Takashi , Ohue Shoichi 
Published: May 2013

AbstractThe aim of this preliminary study was to evaluate the feasibility of assessing ablation margins after radiofrequency ablation (RFA) of liver tumors from fusion images of post-treatment C-arm computed tomography (CT) images fused to pretreatment images. Five patients with liver tumors underwent RFA. Intravenous contrast-enhanced C-arm CT images were obtained for all patients immediately after RFA, and multi-detector CT (MDCT) images were obtained 3-7 days later. The C-arm CT and MDCT images were fused to pretreatment images using a multimodality image fusion software. The minimum ablation margins were assessed in the C-arm CT and MDCT fusion images. Ablation margins after RFA of liver tumors can be measured using intravenous contrast-enhanced C-arm CT images fused with pretreatment images. This technique has the potential for use in the intra-procedural assessment of liver tumor ablation.
Pictorial essay: Vascular interventions in extra cranial head and neck
Authors: Kulkarni Suyash S , Shetty Nitin S , Dharia Tejas P , Polnaya Ashwin M 
Published: May 2013

AbstractMedicine is an ever changing field and interventional radiology (IR) procedures are becoming increasingly popular because of high efficacy and its minimally invasive nature of the procedure. Management of disease processes in the extra cranial head and neck (ECHN) has always been a challenge due to the complex anatomy of the region. Cross sectional imaging of the ECHN has grown and evolved tremendously and occupies a pivotal and integral position in the clinical management of variety of head and neck pathologies. Advances in angiographic technologies including flat panel detector systems, biplane, and 3-dimensional rotational angiography have consolidated and expanded the role of IR in the management of various ECHN pathologies. The ECHN is at cross roads between the origins of great vessels and the cerebral vasculature. Thorough knowledge of functional and technical aspects of neuroangiography is essential before embarking on head and neck vascular interventions. The vessels of the head and neck can be involved by infectious and inflammatory conditions, get irradiated during radiotherapy and injured due to trauma or iatrogenic cause. The ECHN is also a common site for various hypervascular neoplasms and vascular malformations, which can be treated with endovascular and percutaneous embolization. This pictorial essay provides a review of variety of ECHN pathologies which were managed by various IR procedures using different approaches.
Digestive Discomforts and Effect of Ingested Food in People Performing Hajj
Authors: Osama A. Shaikh-Omar  , Eslam A. Header  , Hassan M. Bukhari  
Published: May 2013

A variety of health issues have been investigated in the Hajj pilgrims (HPs) in KSA. However, it is still obscure to decide which meals contribute to health related issues specifically gastrointestinal disorders and allergies. Hence present study was planned to compare the effect of using different meals on GIT disorders and allergies. The data was categorized into two groups. Group 1 of age matched HPs comprised a Functional Digestive System Questionnaire (FDSQ) to study digestive disorders. Group 2 HPs were compared for those received Toafa Corporation Meals (TCM) and those did not received Toafa Corporation Meals (NTCM). The FDSQ showed some of the gastrointestinal symptoms in male and female Hajj pilgrims differing significantly (p<0.05). The efficacy of the treatment was evaluated by subject recovery scoring (SRS). The 61.7% HPs taking TCM revealed various discomforts and food allergy and the 50.6% HPs using NTCM did not suffer from any disorders. However, the pilgrims taking the meals provided by the Toafa corporation but not showing allergy were more significant in number (p=0.0002). The existing study presents a new method (construction of a FDSQ) for comparing gastrointestinal and other disorders. The present study recommends that Toafa Corporation should provide suitable meals for thepilgrims to meet their actual needs during Hajj and health situation.
« Comment m’entendez-vous ? Je parle de si loin. »*
Authors: Manevy Philippe 
Published: May 2013

Stéphane Saint-Jean proposait en octobre 2003 une mise en scène chorale de La Voix humaine de Cocteau, conversation téléphonique d’une femme avec l’amant qui vient de la quitter. Dans [La Voix humaine]9, le téléphone subit une métamorphose radicale. Le choix d’un mode d’énonciation collectif et le parti pris lyrique bouleversent la signification de la pièce, en l’infléchissant du tragique vers le pathos et en désamorçant sa complexité. La logique de la création collective et l’élan communautaire semblent l’emporter sur le désir – affiché – de rendre hommage au poète.
Remanier les dialogues, rénover les tableaux
Authors: Tralongo Stéphane 
Published: May 2013

Cette étude porte sur les méthodes de rénovation qui se mettent en place au tournant du xxe siècle pour lancer de grandes reprises de pièces féeriques et, plus précisément, sur ce que les historiens du cinéma ont retenu comme l’une des premières intégrations du cinématographe au domaine de la mise en scène théâtrale : la projection d’un film dans la féerie La Biche au bois (Théâtre du Châtelet, 1896). En partant des propositions historiographiques formulées par David Mayer, cette recherche se fonde sur le dépouillement d’archives théâtrales qui invitent à nuancer l’effet de nouveauté qu’on serait tenté de percevoir a posteriori dans cette appropriation très précoce du cinématographe. La logique de « récupération des clous » développée par Roxane Martin permet justement de réinscrire l’utilisation du cinématographe dans la continuité des procédures de l’époque, avec le perfectionnement de techniques déjà anciennes et la reconduction de conventions bien établies.
The Relationship Between Arousal and the Remembered Duration of Positive Events
Authors: Frederickx Sofie , Verduyn Philippe , Koval Peter , Brans Karen , Brunner Bettina , Laet Isabelle De , Ogrinz Barbara , Pe Madeline , Hofmans Joeri 
Published: May 2013

SummaryThe relation between affect and retrospective duration estimation has hardly been examined. In this paper, we contribute to filling this gap by studying the influence of arousal on the remembered duration of positive events. On the basis of the contextual change model, we expected that high‐arousal positive events would be remembered as longer compared with low‐arousal positive events. To test this hypothesis, we set up a naturalistic study in which participants were asked at the end of a pleasant amusement park ride at the local fair to rate how pleasant and aroused they felt during the ride as well as to estimate the ride's duration. Feeling more aroused during a ride was associated with longer estimates of the ride's duration. Results are discussed within the framework of retrospective time estimation models. Copyright © 2013 John Wiley & Sons, Ltd.
Fault tolerant synchronization for a class of complex interconnected neural networks with delay
Authors: Wang Zhanshan , Li Tieshan , Zhang Huaguang 
Published: May 2013

SUMMARYThis paper is concerned with the fault tolerant synchronization problem for a class of complex interconnected neural networks against sensor faults. As sensor faults may lead to performance degradation or even instability of the whole network, fault tolerant control laws are designed to guarantee the controlled synchronization of the complex interconnected neural networks. On the basis of Lyapunov stability theory and adaptive schemes, three kinds of fault tolerant control laws are designed on the basis of linear matrix inequality technique. One is the passive fault tolerant control law, the other two are adaptive fault tolerant control laws. The latter two methods use the adaptive adjusting mechanism of the coupling coefficients to ensure the synchronization of the networks in the presence of sensor faults. Simulation results are given to verify the effectiveness of the proposed methods. Copyright © 2013 John Wiley & Sons, Ltd.
Highly selective extraction of baicalin in natural herbs and medicinal preparations by molecularly imprinted polymer
Authors: Mou Xiaoli , Zhang Wenpeng , Chen Zilin 
Published: May 2013

ABSTRACTSelective extraction of bioactive compounds in natural products and traditional medicines is difficult but necessary for drug analysis and new drug development. In this study, baicalin‐imprinted polymer particles were prepared for selective recognition and extraction of baicalin from herbs and traditional Chinese medicines. The molecularly imprinted polymer (MIP) was synthesized by co‐polymerization of 4‐vinylpridine and ethylene glycol dimethacrylate in the presence of baicalin with a ratio of 8 : 40 : 1, where N,N‐dimethyl formamide/acetonitrile served as porogen. The prepared MIP particles showed good selectivity by comparing with non‐imprinted polymer and possessed an imprinted factor of 2.17; selectivity to other molecules was also tested by extracting an analogue, naringin. The performances of the MIP particles were systematically investigated, including adsorption kinetics, isotherm experiment, and Scatchard analysis. The imprinted particles were also applied to extract baicalin from natural herb Plantago asiatica L, and traditional Chinese medicine Longdanxiegan bolus. The results showed that baicalin in these complex matrixes could be selectively extracted and well isolated with other components. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1873–1878, 2013
Polarimetric Multifrequency and Multi‐incidence SAR Sensors Analysis for Archaeological Purposes
Authors: Patruno Jolanda , Dore Nicole , Crespi Mattia , Pottier Eric 
Published: May 2013

ABSTRACTThe aim of the present work was to compare Advanced Land Observing Satellite (ALOS) Phased Array type L‐band Synthetic Aperture Radar (PALSAR) with RADARSAT‐2 C‐band satellite in order to identify the most suitable method for the detection of ground anomalies due to the presence of shallow underground archaeological structures. This comparison was performed over two UNESCO archaeological sites: Djebel Barkal (northern province of Meroe, Sudan) and Samarra (130 km north of Bagdad, Iraq). The choice of these two cultural sites was motivated by their position in a desert area (especially the Djebel Barkal site) where soil moisture has smaller impact on radar wave penetration, thus not compromising data interpretation. The largest difference between the satellites is the spatial resolution, around 20 m for the PALSAR sensor and 9 m for the RADARSAT‐2 satellite. Given the importance of spatial resolution for archaeological purposes, that difference is balanced by the wave band utilized, which can be translated in differences in soil penetration. However, the quite superficial remains in both the sites give different but complementary responses. Polarimetric SAR data were analysed with PolSARpro software, and all the products were then compared with archaeological maps and available optical satellite images, used as a basis for the georeferencing process. This work constitutes a fundamental step in archaeological research toward a correct interpretation of all the scattering mechanisms above or around ancient structures. Additional information, such as meteorological conditions where available and archaeological maps (that can be consulted from the UNESCO website), was used as a support for interpretation of the archaeological areas; in the case of the Iraqi city of Samarra and of the archaeological area of Gebel Barkal, ground‐truth surveys in situ are not allowed for political reasons. Copyright © 2013 John Wiley & Sons, Ltd.
Osmium(III) and Osmium(V) Complexes Bearing a Macrocyclic Ligand: A Simple and Efficient Catalytic System for cis‐Dihydroxylation of Alkenes with Hydrogen Peroxide
Authors: Sugimoto Hideki , Ashikari Kenji , Itoh Shinobu 
Published: May 2013

AbstractA simple protocol that uses [OsIII(OH)(H2O)(L‐N4Me2)](PF6)2 (1; L‐N4Me2=N,N′‐dimethyl‐2,11‐diaza[3.3](2,6)pyridinophane) as a catalyst and H2O2 as a terminal oxidant for efficient cis‐1,2‐dihydroxylation of alkenes is presented. Unfunctionalized (or aliphatic) alkenes and alkenes/styrenes containing electron‐withdrawing groups are selectively oxidized to the corresponding vicinal diols in good to excellent yields (46–99 %). In the catalytic reactions, the stoichiometry of alkene:H2O2 is 1:1, and thus the oxidant efficiency is very high. For the dihydroxylation of cyclohexene, the catalytic amount of 1 can be reduced to 0.01 mol % to achieve a very high turnover number of 5500. The active oxidant is identified as the OsV(O)(OH) species (2), which is formed via the hydroperoxide adduct, an OsIII(OOH) species. The active oxidant 2 is successfully isolated and crystallographically characterized.
Synergistic Effect of SnO2/ZnWO4 Core–Shell Nanorods with High Reversible Lithium Storage Capacity
Authors: Xing Li‐Li , Yuan Shuang , He Bin , Zhao Ya‐Yu , Wu Xiao‐Ling , Xue Xin‐Yu 
Published: May 2013

AbstractHigh reversible lithium storage capacity is obtained from novel SnO2/ZnWO4 core–shell nanorods. At C/20 (20 h per half cycle) rate, the reversible capacity of SnO2/ZnWO4 core–shell nanorods is as high as 1000 mAh g−1, much higher than that of pure ZnWO4, SnO2, or the traditional theoretical result of the simple mixture. Such performance can be attributed to the synergistic effect between the nanostructured SnO2 and ZnWO4. The distinct electrochemical activity of ZnWO4 nanorods probably activates the irreversible capacity of the SnO2 nanoparticles. These results indicate that high‐performance lithium ion batteries can be realized by introducing the synergistic effect of one‐dimensional core–shell nanocomposites.
Gold‐Catalyzed Synthesis of Iodofulvenes
Authors: Nösel Pascal , Lauterbach Tobias , Rudolph Matthias , Rominger Frank , Hashmi A. Stephen K. 
Published: May 2013

AbstractWe report the gold‐catalyzed synthesis of highly functionalized iodofulvenes from iododialkynes under mild conditions. The catalytic cycle involves the formation of gold acetylides and vinylgold intermediates. These intermediates can then undergo an unprecedented iodine/gold exchange. This new pathway for catalyst transfer in dual gold catalysis opens up the possibility of highly regioselective transformations directed by the gold in the organogold intermediates. The resulting products are well suited for further metal‐mediated coupling reactions, allowing the synthesis of extended π‐systems.
Adamantyl Arotinoids That Inhibit IκB Kinase α and IκB Kinase β
Authors: Lorenzo Paula , Ortiz María A. , Álvarez Rosana , Piedrafita F. Javier , de Lera Ángel R. 
Published: May 2013

AbstractA series of analogues of the adamantyl arotinoid (AdAr) chalcone MX781 with halogenated benzyloxy substituents at C2′ and heterocyclic derivatives replacing the chalcone group were found to inhibit IκBα kinase α (IKKα) and IκBα kinase β (IKKβ) activities. The growth inhibitory capacity of some analogues against Jurkat T cells as well as prostate carcinoma (PC‐3) and chronic myelogenous leukemia (K562) cells, which contain elevated basal IKK activity, correlates with the induction of apoptosis and increased inhibition of recombinant IKKα and IKKβ in vitro, pointing toward inhibition of IKK/NFκB signaling as the most likely target of the anticancer activities of these AdArs. While the chalcone functional group present in many dietary compounds has been shown to mediate interactions with IKKβ via Michael addition with cysteine residues, AdArs containing a five‐membered heterocyclic ring (isoxazoles and pyrazoles) in place of the chalcone of the parent system are potent inhibitors of IKKs as well, which suggests that other mechanisms for inhibition exist that do not depend on the presence of a reactive α,β‐unsaturated ketone.
Aquaporin Inhibition by Gold(III) Compounds: New Insights
Authors: Martins Ana Paula , Ciancetta Antonella , de Almeida Andreia , Marrone Alessandro , Re Nazzareno , Soveral Graça , Casini Angela 
Published: May 2013

AbstractAquaporins (AQPs) are membrane water/glycerol channels with essential roles in biological systems, as well as being promising targets for therapy and imaging. Using a stopped‐flow method, a series of gold(III), platinum(II) and copper(II) complexes bearing nitrogen donor ligands, such as 1,10‐phenatroline, 2,2′‐bipyridine, 4,4′‐dimethyl‐2,2′‐bipyridine, 4,4′‐diamino‐2,2′‐bipyridine and 2,2′;6′,2“‐terpyridine, were evaluated in human red blood cells expressing AQP1 and AQP3, responsible for water and glycerol movement, respectively. The results showed that the gold(III) complexes selectively modulate AQP3 over AQP1. Molecular modeling and density functional theory (DFT) calculations were subsequently performed to rationalize the observations and to investigate the possible molecular mechanism through which these gold compounds act on their putative target (AQP3). In the absence of any crystallographic data, a previously reported homology model was used for this purpose. Combined, the findings of this study show that potent and selective modulation of these solute channels is possible, however further investigation is required into the selectivity of this class of agents against all AQP isoforms and their potential therapeutic uses.
Disposable Solid‐State Sensor Based on Polypyrrole Films Doped for Potentiometric Determination of Dipyrone in Human Urine and Pharmaceuticals Products
Authors: Bindewald Eduardo H. , Bergamini Márcio F. , Marcolino‐Jr Luiz H. 
Published: May 2013

AbstractThe present manuscript describes the development of a sensitive and selective disposable solid‐state potentiometric sensor based on doped polypyrrole films (PPy) for dipyrone determination. The dipyrone was incorporated in the PPy matrix during electrochemical polymerization realized under galvanostatic conditions at a graphite pencil electrode. The sensor response for dipyrone was linear in the concentration range from 1.0×10−4 to 4.0×10−2 mol L−1 with a slope of 29 mV dec−1 without interference of inorganic and/or organic species. The method was successfully applied in the determination of dipyrone in spiked human urine and pharmaceutical commercial samples.
Robust pre‐filtering based space division multiple access over multi‐path channels
Authors: Wu Wei‐Chiang 
Published: May 2013

AbstractA novel concept of time reversal division multiple access (TRDMA) is proposed recently as a low complexity, energy efficient wireless multi‐user access method. In this paper, we first generalize TRDMA as a pre‐filtering based space division multiple access communication system, where each user's signature waveform is derived from the information of channel impulse responses (CIRs) between basestation and location specific multiple mobile stations. We develop two pre‐filtering schemes: one is referred to as time reversal matched filter. The benefit of the time reversal matched filter is to fully collect energy at the sampling instant of the intended mobile station (spatial and temporal focusing). The second pre‐filter, which is referred to as zero‐forcing pre‐filter (ZFPF), is derived to meet the zero‐forcing criterion such that multi‐user interference is completely eliminated. However, because the uplink CIR is generally different from the downlink CIR, we present extensive analysis on the performance degradation of the ZFPF caused by this mismatched effect. Furthermore, to improve the robustness to mismatch, we propose a simple yet effective robust ZFPF. We investigate and compare the performances of both schemes under various scenarios in terms of power consumption and averaged signal‐to‐interference‐plus‐noise power ratio. It is shown in both analytical and simulation results that satisfying performance can be achieved by the proposed pre‐filtering system. Moreover, we demonstrate that the proposed robust‐ZFPF has improved the performance in mismatched condition. Copyright © 2013 John Wiley & Sons, Ltd.
Outage, throughput and energy efficiency analysis of some half and full duplex cooperative relaying schemes
Authors: Alves H. , Souza R.D. , Fraidenraich G. 
Published: May 2013

ABSTRACTIn this paper, we compare cooperative full‐duplex (FD) and incremental cooperative half‐duplex (HD) relaying, in terms of outage probability, throughput and energy efficiency. We consider a practical model for the FD relay, where self‐interference between transmitted and received signals is taken into account. The FD transmission is based on the well‐known block Markov encoding scheme. For the HD transmission, incremental space–time cooperation and selection combining based on the cooperative decode‐and‐forward protocol are considered. Our results show that incremental cooperative HD relaying can outperform cooperative FD relaying, specially if the self‐interference is non‐negligible, achieving a better trade‐off between throughput and energy consumption. Copyright © 2013 John Wiley & Sons, Ltd.
Calcium‐binding protein expression in peritoneal endometriosis‐associated nerve fibres
Authors: Barcena de Arellano M. L. , Münch S. , Arnold J. , Helbig S. , Schneider A. , Mechsner S. 
Published: May 2013

AbstractBackgroundRecent studies demonstrated the potential involvement of nerve fibres in the chronic inflammatory process of endometriosis. We aimed to characterize nerve fibres in the proximal and distal areas of the peritoneal endometriotic lesions in order to understand the chronic inflammatory process in endometriosis.MethodsPeritoneal endometriotic lesions (proximal area) (n = 17), the matching unaffected peritoneum (distal area) and healthy peritoneum of patients without endometriosis (n = 15) were analysed with the neuronal markers PGP 9.5, calbindin, calretinin and parvalbumin. Peritoneal fluids of women with and without endometriosis were used for Western blot analysis and for the neuronal growth assay. The protein expression of neuronal PC‐12 cells incubated with peritoneal fluids was analysed.ResultsThe overall nerve fibre density was significantly reduced in the distal area of the lesion when compared with the proximal area or with healthy peritoneum. The density of calbindin‐, calretinin‐ and parvalbumin‐positive nerve fibres was significantly increased in the endometriosis group. Calretinin expression was elevated in the peritoneal fluid of women with symptomatic endometriosis when compared with women with asymptomatic endometriosis. Furthermore, PC‐12 cells incubated with peritoneal fluid of women with endometriosis showed a higher proliferation rate and a stronger neurite outgrowth than the control group. PC‐12 cells incubated in peritoneal fluids of women with endometriosis expressed less calretinin but more calbindin than the control group.ConclusionsCalcium‐binding proteins seem to be increased in endometriosis‐associated nerve fibres and might play an important role in the chronic inflammatory condition and the pain pathogenesis of endometriosis.