bluuebunny/crossref_metadata_2025_split huggingface dataset:
Children's dietary recalls from three validation studies: types of intrusion vary with retention interval
Authors: Baxter Suzanne Domel , Hardin James W. , Smith Albert F. , Royer Julie A. , Guinn Caroline H. 
Published: November 2007

AbstractUsing previously collected data of fourth‐grade children observed eating school meals and then interviewed, we categorized intrusions (food items reported but not observed eaten) as stretches (on the child's tray) or confabulations (not on the child's tray). We investigated intrusions, confabulations, and stretches and the role of liking, at different retention intervals (morning interviews about the previous day's intake; evening interviews about that day's intake) and under different reporting‐ order prompts (forward; reverse). As retention interval between consumption and report increased, the likelihood (1) increased that reported items were intrusions, that reported items were confabulations and that intrusions were confabulations; and (2) was constant that reported items were stretches. Results concerning reporting‐order prompts were inconclusive. Liking ratings were higher for matches (reports of items observed eaten) than stretches, for confabulations than stretches, and for matches than omissions (unreported items observed eaten), but did not vary by retention interval or reporting‐order prompts. Copyright © 2007 John Wiley & Sons, Ltd.
Structure, interaction and property of amino‐functionalized imidazolium ILs by molecular dynamics simulation and Ab initio calculation
Authors: Yu Guangren , Zhang Suojiang , Zhou Guohui , Liu Xiaomin , Chen Xiaochun 
Published: November 2007

AbstractImidazolium ionic liquids (ILs) can be functionalized by introducing NH2, which were found to be excellent solvents for CO2 capture and electrophile separation, however, some disadvantages, e.g., the relatively high viscosities, limit their eventual large‐scale applications. To understand the influences of amino addition on their properties and promote their applications, the microstructure and interionic interaction in two selected amino‐functionalized imidazolium ILs, 1‐aminoethyl‐3‐methylimidazolium hexafluorophosphate and 1‐aminopropyl‐3‐butylimidazolium tetrafluoroborate, are studied both for bulk liquid by using molecular dynamics simulations and for isolated ion pair by using ab initio calculations. It is found that the amino addition does not remarkably affect the organization of anions around C2‐site, C4‐site, and C5‐site on imidazolium ring, while it participates in the cation–anion interaction as a new strong site where anions strongly organize around NH2 and form strong ion‐type hydrogen bonds. The condensed phase simulations indicate that their ionic self‐diffusion coefficients are on the order of 10−13 m2 s−1 at room temperature, roughly 2 order of magnitude lower than that of conventional imidazolium ILs without NH2; the isolated ion pair calculations show that such terminal amino‐associated interaction reduces the flexibility of alkyl side chains and increases the cation–anion interaction; and these results are qualitatively consistent with their higher experimental viscosities. © 2007 American Institute of Chemical Engineers AIChE J, 2007
Fabricating novel thermal crosslinked ultrafine fibers via electrospinning
Authors: Dai Tian‐He , Yu Hao , Zhang Kai , Zhu Mei‐Fang , Chen Yan‐Mo , Adler Hans‐Juergen 
Published: November 2007

AbstractIn this article, we report the preparation of a kind of novel crosslinked ultrafine fiber by electrospinning of unsaturated polyester macromonomers (UPM) and subsequent thermal crosslinking. The UPM is prepared via a two‐step reaction with poly(2‐methyl‐1,3‐propyleneadipate) diol terminated (PMPA), isophorone‐diisocyanate (IPDI) and 2‐hydroxyethyl methacrylate (HEMA). Poly(3‐hydroxyl‐butyrate‐co‐3‐hydroxylvalerate) (PHBV) is chosen to improve the processability of the UPM. UPM/PHBV blend ultrafine fibers are successfully electrospun with a proper mass ratio of UPM to PHBV in dichloromethane solution. The fibers are thermally crosslinked after electrospinning. Measurement results indicate that the average diameter of the fibers is about 1 μm and the crosslinked fibers have good solvent‐stability and thermal‐stability. This novel fiber has potential applications in filtration and protective coating. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 107:2142–2149, 2008
Modification of polypropylene through intercrosslinking graft copolymerization of poly(vinyl alcohol): Synthesis and characterization
Authors: Kaur Inderjeet , Neena Gautam  , Khanna N. Deepika 
Published: November 2007

AbstractModification of polypropylene (PP) has been successfully carried out through intercrosslinking of poly(vinyl alcohol) (PVA), by chemical graft copolymerization method using benzoyl peroxide (BPO) as radical initiator. Prior to grafting, PP was irradiated by gamma rays at a constant dose rate of 3.40 kGy/h to introduce hydroperoxide groups. Optimum conditions pertaining to maximum percentage of grafting were evaluated as a function of different reaction parameters. Maximum percentage ofgrafting of PVA (75%) was obtained at [BPO] = 5.51 × 10−2 mol/L in 120 min at 70°C using 15 mL of water. Characterization of pristine PP and PP‐g‐PVA was carried out by FTIR, thermogravimetric analysis, and scanning electron micrography. Swelling studies were carried out in pure, binary, ternary, and quaternary solvent systems comprising of water, ethanol (EtOH), dimethylsulfoxide (DMSO) and N, N‐dimethylformamide (DMF) in different ratios. Maximum swelling values of PP‐g‐PVA (both composite and true graft) was observed in pure DMSO followed by DMF, EtOH, and water and it was also higher than that observed in mixed solvent system. Water retention studies of pristine PP and PP‐g‐PVA (both composite and true graft) were investigated at different time periods, temperature, and pH. Maximum % water retention of PP‐g‐PVA (composite) (108%) was observed in 8 h at 50°C in neutral medium (pH = 7). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Enhanced mechanical properties of multilayer nano‐coated electrospun nylon 6 fibers via a layer‐by‐layer self‐assembly
Authors: Park Jong Hoon , Kim Byoung Suhk , Yoo Yeon Chun , Khil Myung Seob , Kim Hak Yong 
Published: November 2007

AbstractWe reported the mechanical properties of the polyelectrolyte multilayer nano‐coated electrospun fiber mats with different number of layers. Multilayer nano‐coatings composed of layers of PSS and PAH were successfully deposited onto electrospun nylon 6 fibers via layer‐by‐layer self‐assembly. Compared with pure nylon 6 fibers, the morphology of polyelectrolyte multilayer coated nylon 6 fibers was uniform and smooth. The mechanical properties of polyelectrolyte multilayer coated random and aligned nylon 6 fibers were remarkably enhanced. Moreover, it was found that the higher degree of alignment resulted in higher tensile strength, suggesting the combined effects of the alignment, the surface nanocoating and the formation of internal networks of polyelectrolytes on nylone 6 fibers. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Non‐destructive electrical resistivity tomography for indoor investigation: the case of Kapnikarea Church in Athens
Authors: Tsokas G. N. , Tsourlos P. I. , Vargemezis G. , Novack M. 
Published: November 2007

AbstractThe area inside and around the church of Kapnikarea in Athens (Greece), was explored by means of electrical resistivity tomography (ERT). ‘Flat base’ electrodes were used exclusively because the survey had to be fully non‐destructive. The performance of ‘flat base’ electrodes was satisfactory, leading to inversions of small root mean square (RMS) errors and reliable subsurface images, which were checked against existing borehole logs. High‐resistivity anomalies were observed beneath the floor of the church. They are attributed to possible voids, remains of ancient wells, or other man‐made structures concealed under the floor of the church. The results show that ‘flat base’ electrodes provided the advantage of fully non‐destructive geoelectrical measurements. They also show that the use of the non‐destructive ERT method offers a serious alternative and a complementary method to ground‐penetrating radar surveys inside existing monuments. Copyright © 2007 John Wiley & Sons, Ltd.
Homogeneous [RuIII(Me3tacn)Cl3]‐Catalyzed Alkene cis‐Dihydroxylation with Aqueous Hydrogen Peroxide
Authors: Yip Wing‐Ping , Ho Chi‐Ming , Zhu Nianyong , Lau Tai‐Chu , Che Chi‐Ming 
Published: November 2007

AbstractA simple and green method that uses [Ru(Me3tacn)Cl3] (1; Me3tacn=N,N′,N′′‐trimethyl‐1,4,7‐triazacyclononane) as catalyst, aqueous H2O2 as the terminal oxidant, and Al2O3 and NaCl as additives is effective in the cis‐dihydroxylation of alkenes in aqueous tert‐butanol. Unfunctionalized alkenes, including cycloalkenes, aliphatic alkenes, and styrenes (14 examples) were selectively oxidized to their corresponding cis‐diols in good to excellent yield (70–96 %) based on substrate conversions of up to 100 %. The preparation of cis‐1,2‐cycloheptanediol (119 g, 91 % yield) and cis‐1,2‐cyclooctanediol (128 g, 92 % yield) from cycloheptene and cyclooctene, respectively, on the 1‐mol scale can be achieved by scaling up the reaction without modification. Results from Hammett correlation studies on the competitive oxidation of para‐substituted styrenes (ρ=−0.97, R=0.988) and the detection of the cycloadduct [(Me3tacn)ClRuHO2(C8H14)]+ by ESI‐MS for the 1‐catalyzed oxidation of cyclooctene to cis‐1,2‐cyclooctanediol are similar to those of the stoichiometric oxidation of alkenes by cis‐[(Me3tacn)(CF3CO2)RuVIO2]+ through [3+2] cycloaddition (W.‐P. Yip, W.‐Y. Yu, N. Zhu, C.‐M. Che, J. Am. Chem. Soc. 2005, 127, 14239).
Testing Concordance of Clinical Characteristics in Familial Studies with Application to Inflammatory Bowel Diseases
Authors: Yan Jun , Tamboli Cyrus P. 
Published: November 2007

AbstractThe etiology of chronic Inflammatory Bowel Diseases (IBD) remains unknown, with both genetic and environmental risk factors having been implicated. A recent collaborative study of IBD provides clinical data from families with three or more affected first‐degree relatives. The scientific question is whether specific clinical characteristics aggregate among affected individuals within families. Gastroenterological researchers have examined the number of concordant familial pairs in familial aggregation studies, but methods and results have been discrepant. This article investigates concepts of concordance and gives a comprehensive statistical treatment for testing concordance of various clinical traits in familial studies. For dichotomous traits, the distribution of this statistic under the null hypothesis of no familial aggregation is obtained by three methods: asymptotic, probability generating function, and permutation. The permutation method is extended to analyze aggregation for non‐dichotomous traits and co‐aggregations between two traits. We apply the permutation method to analyze the aforementioned multiply‐affected IBD family data. Evidence is found for familial clustering of various traits, some of which are not revealed in existing studies. Such analyses provide a basis for investigating the dependence of trait aggregation upon genetic or environmental risk factors. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Simulation of ultrasound guided needle puncture using patient specific data with 3D textures and volume haptics
Authors: Vidal F. P. , John N. W. , Healey A. E. , Gould D. A. 
Published: November 2007

AbstractWe present an integrated system for training ultrasound (US) guided needle puncture. Our aim is to provide a validated training tool for interventional radiology (IR) that uses actual patient data. IR procedures are highly reliant on the sense of touch and so haptic hardware is an important part of our solution. A hybrid surface/volume haptic rendering of an US transducer is proposed to constrain the device to remain outside the bony structures when scanning the patient's skin. A volume haptic model is proposed that implements an effective model of needle puncture. Force measurements have been made on real tissue and the resulting data is incorporated into the model. The other input data required is a computed tomography (CT) scan of the patient that is used to create the patient specific models. It is also the data source for a novel simulation of a virtual US scanner, which is used to guide the needle to the correct location. Copyright © 2007 John Wiley & Sons, Ltd.
The effect of thrombectomy on myocardial blush in primary angioplasty: The randomized evaluation of thrombus aspiration by two thrombectomy devices in acute myocardial infarction (RETAMI) trial
Authors: Sardella Gennaro , Mancone Massimo , Nguyen Bich Lien , De Luca Leonardo , Di Roma Angelo , Colantonio Riccardo , Petrolini Alessandro , Conti Giulia , Fedele Francesco 
Published: November 2007

AbstractBackground: In patients with ST‐segment elevation myocardial infarction (STEMI), primary percutaneous coronary intervention (PCI) may cause thrombus dislodgment leading to microvascular function impairment, which is a negative independent predictor of myocardial function recovery. Compared with conventional stenting, pretreatment with aspiration thrombectomy during primary PCI significantly improves coronary epicardial flow and myocardial tissue perfusion parameters. We sought to evaluate the angiographic findings of two different manual aspiration thrombectomy devices (Diver‐Invatec® (DI) and Export‐Medtronic®® (EM)) in STEMI patients undergoing primary angioplasty. Methods: We randomized 103 STEMI patients referred to our hospital to undergo primary PCI (<12 hr from symptoms onset) to DI (n = 52) and EM (n = 51) devices. The primary angiographic composite end‐points were the rates of post‐thrombectomy thrombus score (TS) ≤≤2, TIMI flow grade ≥≥2, and post‐stenting myocardial blush grade (MBG) ≥≥2 in the two groups. Results: Baseline, clinical, and angiographic preprocedural findings did not differ between the two groups. After aspiration thrombectomy, a TS ≤≤ 2 was more frequently present in EM group (92.3 vs. 69.3%, P = 0.0052). Also the rate of post‐thrombectomy TIMI ≥≥ 2 (69.3 vs. 92.2%, P = 0.0052) and post‐stenting MBG ≥≥2 (88.2 vs. 69.3%, P = 0.029) were significantly higher in EM group. No significative differences were observed in terms of clinical events at 1 and 12 months. Conclusions: In this single‐center, prospective, randomized study, a EM use before stenting in STEMI patients seems to remove more thrombotic burden compared with DI, providing a greater post‐thrombectomy epicardial flow and a better post‐stenting microvascular perfusion. © 2008 Wiley‐Liss, Inc.
In vivo porcine model of reperfused myocardial infarction: In situ double staining to measure precise infarct area/area at risk
Authors: Suzuki Yoriyasu , Lyons Jennifer K. , Yeung Alan C. , Ikeno Fumiaki 
Published: November 2007

AbstractObjectives: The aim of this study is to evaluate a catheter‐based porcine model for reperfused myocardial infarction and investigate the appropriate location and duration of the occlusion. Material and Methods: A balloon catheter was placed in the left descending coronary artery (LAD) in 78 swine, and used to occlude the LAD. To evaluate this model, left ventricular ejection fraction (LVEF), infarct size, incidence of ventricular fibrillation (VF), and mortality was compared among three groups: 60‐min proximal LAD occlusion (60P), 60‐min mid LAD occlusion (60M), and 30‐min proximal LAD occlusion (30P). Results: In 72 of the 78 pigs, the procedures were successfully completed. Both mortality and incidence of VF were highest in the 60P group (66.7% and 91.7%, respectively). Myocardial infarction was successfully induced in all 72 animals and in situ double‐staining with Evans blue dye and 2,3,5‐triphenyltetrazolium chloride was performed to delineate area at risk for ischemia and infarcted myocardium. There was no difference in infarct size, expressed as a percentage of the area at risk, between the 60P and 60M groups (49.5% ± 3.9% vs. 45.4% ± 13.3%, respectively). Serial changes in LVEF of the 60M group demonstrated that until 14 days after reperfusion, LVEF improved naturally over time (36.4% ± 6.6% at 24 hr, and 47.3% ± 10.1% at 14 days). Conclusion: This model and methodology could provide a reproducible and consistent infarct size. The current study demonstrated that 60‐min mid LAD occlusion can be the most feasible to serve as a porcine reperfused myocardial infarction model. © 2008 Wiley‐Liss, Inc.
Java multithreading‐based parallel approximate arrow‐type inverses
Authors: Gravvanis George A. , Epitropou Victor N. 
Published: November 2007

AbstractA new parallel shared memory Java multithreaded design and implementation of the explicit approximate inverse preconditioning, for efficiently solving arrow‐type linear systems on symmetric multiprocessor systems (SMPs), is presented. A new parallel algorithm for computing a class of optimized approximate arrow‐type inverse matrix is introduced. The performance on an SMP, using Java multithreading, is investigated by solving arrow‐type linear systems and numerical results are given. The parallel performance of the construction of the optimized approximate inverse and the explicit preconditioned generalized conjugate gradient square scheme, using a dynamic workload scheduling, is also presented. Copyright © 2007 John Wiley & Sons, Ltd.
IFN‐β modulates the response to TLR stimulation in human DC: Involvement of IFN regulatory factor‐1 (IRF‐1) in IL‐27 gene expression
Authors: Remoli Maria Elena , Gafa Valérie , Giacomini Elena , Severa Martina , Lande Roberto , Coccia Eliana M. 
Published: November 2007

AbstractType I IFN are cytokines which play a central role in host resistance to viral or microbial infections and are important components linking innate and adaptive immunity. We and others have previously demonstrated that the production of IFN‐β by DC following bacterial infections or TLR triggering influences, in an autocrine manner, their maturation. In this study, we investigated whether IFN‐β release modulates the phenotype of the immature DC and their response to a subsequent TLR stimulation. The induction of CD86, HLA‐DR, CD38 and B7H1 and the absence of CCR7 and CD83 expression upon IFN‐β treatment suggest that IFN‐β‐primed DC remain at the site of infection acquiring an activated phenotype. These results prompted us to investigate the response of IFN‐β‐primed DC to TLR stimulation. While IFN‐β pretreatment increases slightly the expression of maturation markers in TLR2‐ or TLR4‐stimulated DC, it is able to modulate selectively the secretion of inflammatory and immuno‐regulating cytokines. Interestingly, IL‐27p28 subunit was induced by IFN‐β alone or during LPS‐induced maturation of DC in a type I IFN‐dependent manner through IFN regulatory factor‐1 (IRF‐1) activation. Taken together, our results shed light on the capacity of IFN‐β to finely tune DC response to invading pathogens.
Cutaneous T‐cell lymphoma‐associated lung cancers show chromosomal aberrations differing from primary lung cancer
Authors: Hahtola Sonja , Burghart Elke , Puputti Marjut , Karenko Leena , Abdel‐Rahman Wael M. , Väkevä Liisa , Jeskanen Leila , Virolainen Susanna , Karvonen Jaakko , Salmenkivi Kaisa , Kinnula Vuokko , Joensuu Heikki , Peltomäki Päivi , Klein Christoph A. , Ranki Annamari 
Published: November 2007

AbstractCutaneous T‐cell lymphoma (CTCL) patients have an increased risk of certain secondary cancers, the most common of which are lung cancers, especially small cell lung cancer. To reveal the molecular pathogenesis underlying CTCL‐associated lung cancer, we analyzed genomic aberrations in CTCL‐associated and reference lung cancer samples. DNA derived from microdissected lung cancer cells of five CTCL‐associated lung cancers and five reference lung cancers without CTCL association was analyzed by comparative genomic hybridization (CGH). Fluorescent in situ hybridization (FISH), immunohistochemistry (IHC), and loss of heterozygosity (LOH) analysis were performed for selected genes. In CTCL‐associated lung cancer, CGH revealed chromosomal aberrations characterizing both lung cancer and CTCL, but also losses of 1p, and 19, and gains of 4q and 7, hallmarks of CTCL. LOH for the CTCL‐associated NAV3 gene was detected in two of the four informative primary lung cancers. FISH revealed increased copy number of the KIT gene in 3/4 of CTCL‐associated lung cancers and 1/5 of primary lung cancers. PDGFRA and VEGFR2 copy numbers were also increased. IHC showed moderate KIT expression when the gene copy number was increased. CTCL‐associated lung cancer shows chromosomal aberrations different from primary lung cancer, especially amplifications of 4q, a chromosome arm frequently deleted in the latter tumor type. Copy numbers and expression of selected genes in chromosome 4 differed between CTCL‐associated and reference lung cancers. These preliminary observations warrant further prospective studies to identify the common underlying factors between CTCL and CTCL‐associated lung cancer. This article contains Supplementary Material available at http://www.interscience.wiley.com/jpages/1045‐2257/suppmat. © 2007 Wiley‐Liss, Inc.
Functional status and depressive symptoms among older adults from residential care facilities in the Czech Republic
Authors: Vanková Hana , Holmerová Iva , Andel Ross , Veleta Petr , Janecková Hana 
Published: November 2007

AbstractBackgroundDepressive symptoms are common among older adults, particularly those living in long‐term care facilities. However, little is known about factors associated with depressive symptoms among long‐term care residents in the Czech Republic and in other Eastern European countries. Moreover, the role of mobility and pain in depressive symptoms among long‐term care residents is relatively understudied.ObjectiveWe examined the relationship between functional status and depressive symptoms in 308 older adults from residential care facilities (RCFs) in the Czech Republic.MethodWe used baseline data from two randomized controlled trials testing the effects of dance and reminiscence therapies on quality of life in older RCF residents. Functional status was measured as cognitive function, general ability to perform basic Activities of Daily Living (ADLs), mobility, and functional limitation by pain. Depressive symptoms were measured using the 15‐item Geriatric Depression Scale.ResultsIn multiple regression analyses adjusted for sociodemographic factors and taking antidepressants, we found that cognitive function and functional limitation by pain were most strongly associated with depressive symptoms. The ability to perform basic ADLs and mobility were also related to depressive symptoms.ConclusionOur findings suggest factors that may be important in efforts to improve psychological well‐being in this population. Copyright © 2007 John Wiley & Sons, Ltd.