bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and Cytostatic Evaluation of Pyridopyrimidobenzimidazole Derivatives.
Authors: Starcevic Kristina , Kralj Marijeta , Ester Katja , Karminski‐Zamola Grace 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Novel Three‐Component, One‐Pot Synthesis of 1,2‐Dihydro‐1‐arylnaphtho[1,2‐e][1,3]oxazine‐3‐one Derivatives under Microwave‐Assisted and Thermal Solvent‐Free Conditions.
Authors: Dabiri Minoo , Delbari Akram Sadat , Bazgir Ayoob 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of 5,7‐Diamino[1,2,4]triazolo[1,2‐a][1,3,5]triazines via Annulation of 1,3,5‐Triazine Ring onto 3(5)‐Amino‐1,2,4‐triazoles.
Authors: Dolzhenko Anton V. , Dolzhenko Anna V. , Chui Wai‐Keung 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chemoselective Synthesis of New Dibenzo[d,f]‐1,3‐dioxepines and 12H‐Dibenzo[d,g]‐1,3‐dioxocines
Authors: Tocco Graziella , Begala Michela , Meli Gabriele , Podda Gianni 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Three Sesquiterpene Glycosides from Elsholtzia bodinieri
Authors: Hu Hao‐bin , Jian Yu‐feng , Zheng Xu‐dong , Cao Hong 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Canataxpropellane, a Novel Taxane with a Unique Polycyclic Carbon Skeleton (Tricyclotaxane) from the Needles of Taxus canadensis.
Authors: Huo Chang‐Hong , Su Xiao‐Hui , Wang Yu‐Fang , Zhang Xi‐Ping , Shi Qing‐Wen , Kiyota Hiromasa 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Aromadendrane‐Type Sesquiterpene Derivatives and Other Constituents from Erigeron acer
Authors: Wu Gang , Fei Dong‐Qing , Gao Kun 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mechanical and Microstructural Characterization of Aluminum Reinforced with Carbon‐Coated Silver Nanoparticles
Authors: Martinez‐Sanchez R. , Reyes‐Gasga J. , Caudillo R. , Garcia‐Gutierrez D. I. , Marquez‐Lucero A. , Estrada‐Guel I. , Mendoza‐Ruiz D. C. , Yacaman M. Jose 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Recent Developments in Asymmetric Hydrogenation of C=O Motif Compounds
Authors: Kwong Fuk Yee , Qiu Liqin , Lam Wai Har , Chan Albert S. C. 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mass Spectrometry and Gas‐Phase Chemistry of Anilines
Authors: Eberlin Marcos N. , Augusti Daniella Vasconcellos , Augusti Rodinei 
Published: July 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Oscillation frequency in hybrid stepping motors
Authors: Yokozuka Tsutomu , Baba Eiji , Shibayama Jūukichi , Sekiguchi Hiroyuki , Kobayashi Toshio 
Published: July 2007

AbstractOscillation characteristics under constant drive pulse‐rate conditions are measured on the basis of the drive pulse rate f (pps). Relationships between the oscillation frequency under rotating conditions and the single‐step response are investigated.It is clarified that the main components of oscillation consist of the integral‐ and fractional‐harmonics of f, and that they are determined from the times at the valley and peak of the single‐step response, respectively. The f/4 component oscillation, which is very different from the forementioned oscillations, also is discussed.
The order effect in self–other predictions: considering target as a moderator
Authors: Pollmann Monique M. H. , Finkenauer Catrin , van Dijk Wilco W. 
Published: July 2007

AbstractTwo factors known to affect the use of self in social prediction, target similarity and order of predictions, are considered in concert to understand how the use of self varies across the prediction of different targets. Replicating earlier studies, we predicted and found that people use the self more when predicting similar others than when predicting dissimilar others. Extending existing studies, we predicted and found order effects for similar others. As predicted no order effects emerged for predictions for dissimilar targets. Because the self is more accessible during the prediction of similar others, it matters whether self‐predictions precede or follow other‐predictions. Feature‐matching theory is proposed as a possible explanation for the emergence of order effects in predictions of similar targets. Copyright © 2007 John Wiley & Sons, Ltd.
Flow Injection Analysis of Maleic Hydrazide Using an Electrochemical Sensor Based on Palladium‐Dispersed Carbon Paste Electrode
Authors: Sánchez A. , Zapardiel A. , de Prado F.López , Bermejo E. , Moreno M. , Pérez‐López J. A. , Chicharro M. 
Published: July 2007

AbstractA new analytical methodology for the electrochemical detection of the herbicide maleic hydrazide (3,6‐dihydroxypyridazine) by flow injection analysis is presented. This method is supported by the novel application of a palladium‐dispersed carbon paste electrode as an amperometric sensor for this herbicide. Maleic hydrazide shows anodic electrochemical activity on carbon‐based electrodes (glassy carbon or carbon paste electrodes) in all the pH range. This electrochemical activity is enhanced using metal‐dispersed carbon paste electrodes, especially at Pd‐dispersed CPE which displays good oxidation signals at 690 mV (0.050 M phosphate buffer pH 7.0), 140 mV lower than at unmodified electrodes. Under the optimized conditions, the electroanalytical performance of Pd‐dispersed CPE in flow injection analysis was excellent, with good reproducibility (RSD 3.3%) and a wide linear range (1.9×10−7 to 1.0×10−4 mol L−1). A detection limit of 1.4×10−8 mol L−1 (0.14 ng maleic hydrazide) was obtained for a sample loop of 100 μL at a fixed potential of 700 mV in 0.050 M phosphate buffer solution at pH 7.0 and a flow rate of 2.0 mL min−1. The proposed method was applied for the maleic hydrazide detection in natural drinking water samples.
Sensitive Biomimetic Sensor Based on Molecular Imprinting at Functionalized Indium Tin Oxide Electrodes
Authors: Gao Na , Xu Zhiai , Wang Fuan , Dong Shaojun 
Published: July 2007

AbstractWe initially report an electrochemical sensing platform based on molecularly imprinted polymers (MIPs) at functionalized Indium Tin Oxide Electrodes (ITO). In this research, aminopropyl‐derivatized organosilane aminopropyltriethoxysilane (APTES), which plays the role of functional monomers for template recognition, was firstly self‐assembled on an ITO electrode and then dopamine‐imprinted sol was spin‐coated on the modified surface. APTES which can interact with template dopamine (DA) through hydrogen bonds brought more binding sites located closely to the surface of the ITO electrode, thus made the prepared sensor more sensitive for DA detection. Potential scanning is presented to extract DA from the modified film, thus DA can rapidly and completely leach out. The affinity and selectivity of the resulting biomimetic sensor were characterized using cyclic voltammetry (CV). It exhibited an increased affinity for DA over that of structurally related molecules, the anodic current for DA oxidation depended on the concentration of DA in the linear range from 2×10−6 M to 0.8×10−3 M with a correlation coefficient of 0.9927. In contrast, DA‐templated film prepared under identical conditions on a bare ITO showed obviously lower response toward dopamine in solution. It should be noted that potential scanning is a very effective approach for DA extraction, and surface modification of the electrochemical transducer with functional monomers is responsible for the development of MIPs‐based highly sensitive biomimetic sensor.
Nafion/Poly(sodium 4‐styrenesulfonate) Mixed Coating Modified Bismuth Film Electrode for the Determination of Trace Metals by Anodic Stripping Voltammetry
Authors: Jia Jianbo , Cao Linyuan , Wang Zhenhui 
Published: July 2007

AbstractTo improve the reproducibility, stability, and sensitivity of bismuth film electrode (BiFE), we studied the performances of a mixed coating of two cation‐exchange polymers, Nafion (NA) and poly(sodium 4‐styrenesulfonate) (PSS), modified glassy carbon BiFE (GC/NA‐PSS/BiFE). The characteristics of GC/NA‐PSS/BiFE were investigated by scanning electron microscopy and cyclic voltammetry. Various parameters were studied in terms of their effect on the anodic stripping voltammetry (ASV) signals. Under optimized conditions, the limits of detection were 71 ng L−1 for Cd(II) and 93 ng L−1 for Pb(II) with a 10 min preconcentration. The results exhibited that GC/NA‐PSS/BiFE can be a reproducible and robust tool for monitor of trace metals by ASV rapidly and environmentally friendly, even in the presence of surface‐active compounds.
TOF‐MRA using multi‐oblique‐stack acquisition (MOSA)
Authors: Wu Ed X. , Hui Edward S. , Cheung Jerry S. 
Published: July 2007

AbstractPurposeTo alleviate the intrinsic limitation of current time‐of‐flight magnetic resonance angiography (TOF‐MRA) techniques, which are insensitive to in‐plane blood flow due to the flow saturation effect.Materials and MethodsA multi‐oblique‐stack acquisition (MOSA) technique was proposed in this study to tackle this TOF problem by acquiring two or more TOF image stacks bearing different orientations. The MOSA approach was evaluated in human brain MR angiograms by integrating it with the widely used multiple overlapping thin‐slab acquisition (MOTSA) technique. Two TOF image sets in different orientations were acquired using MOTSA. They were combined pixel‐by‐pixel by taking the maximum intensity value. Maximum intensity projection (MIP) was then performed, and the resulting MRA quality was assessed.ResultsThe results demonstrated that MR angiograms obtained by MOSA‐MOTSA were clearly improved compared to those acquired by conventional MOTSA in the same scan time.ConclusionMOSA clearly demonstrates its advantage over conventional TOF acquisition in visualizing in‐plane blood flows. J. Magn. Reson. Imaging 2007. © 2007 Wiley‐Liss, Inc.
Claustrophobia and premature termination of magnetic resonance imaging examinations
Authors: Eshed Iris , Althoff Christian E. , Hamm Bernd , Hermann Kay‐Geert A. 
Published: July 2007

AbstractPurposeTo evaluate the incidence of MRI‐related claustrophobia and prematurely terminated MRI (ptMRI) examinations due to claustrophobia in a large‐scale cohort study.Materials and MethodsThe hospital's computerized radiology information system (RIS) was retrospectively analyzed for all 1.5‐Tesla MRI examinations and reports during the year 2004. Data collected included demographic information, body part examined, known claustrophobia, and whether the examination was prematurely terminated. All information available on the MRI examinations and the patient‐based data (i.e., excluding any additional examinations per patient) were analyzed.ResultsA total of 5798 MRI reports of 4821 patients were evaluated. A total of 95 patients (1.97%) suffered from claustrophobia and 59 (1.22%) prematurely terminated the examination due to claustrophobia. The incidence of ptMRI was higher in women than men (no statistical significance). The majority of patients with ptMRI were between 20 and 80 years old. Patients undergoing head MRI showed the highest incidence of ptMRI and those undergoing extremity, breast, or pelvic MRI had the lowest. Prone compared to supine positioning results in the lowest ptMRI incidence (P < 0.05).ConclusionClaustrophobic reactions cause a relatively low incidence of ptMRI and are influenced by sex, body part examined, and positioning within the MR scanner. Sedation and prone positioning might help overcome these reactions. J. Magn. Reson. Imaging 2007. © 2007 Wiley‐Liss, Inc.
Analysis of soil–pile–structure interaction in a two‐layer ground during earthquakes considering liquefaction
Authors: Lu C. W. , Oka F. , Zhang F. 
Published: July 2007

AbstractThis study is conducted with a numerical method to investigate the seismic behaviour among certain soils, single piles, and a structure. A series of numerical simulations of the seismic behaviour of a single‐pile
foundation constructed in a two‐layer ground is carried out. Various sandy soils, namely, dense sand, medium dense sand, reclaimed soil, and loose sand, are employed for the upper layer, while one type of clayey soil is used for the lower layer. The results reveal that when a structure is built in a non‐liquefiable ground, an amplification of the seismic waves is seen on the ground surface and in the upper structure, and large bending moments are generated at the pile heads. When a structure is built in a liquefiable ground, a de‐amplification of the seismic waves is seen on the ground surface and in the upper structure, and large bending moments are generated firstly at the pile heads and then in the lower segment at the boundary between the soil layers when liquefaction takes place. Copyright © 2007 John Wiley & Sons, Ltd.
Synthesis and properties of room temperature curable trimethoxysilane‐terminated polyurethane and their dispersions
Authors: Subramani Sankaraiah , Lee Jung Min , Lee Jun‐Young , Kim Jung Hyun 
Published: July 2007

AbstractThe purpose of this research is to study the synthesis and characterization of stable aqueous dispersions of externally chain extended polyurethane/urea compositions terminated by hydrolyzable or hydrolyzed trialkoxysilane groups incorporated through secondary amino groups. These dispersions with excellent storage stability are substantially free from organic solvents which cure to water and solvent resistant, tough, scratch resistant, preferably light stable (non‐yellowing) silylated polyurethane (SPU) films. The films were characterized by FT‐IR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), tensile strength and water contact angle measurements, nanoindentation, gel content, water and xylene swellability tests. The properties of the films were discussed and correlated in detail by changing length of soft segment, diisocyanates, NCO/OH ratio and chain extender, ethylenediamine (EDA). From the results, it was found that the particle size and viscosity are lower whereas the gel content and thermal stability are higher for SPUs. Modulus, hardness and tensile properties of SPU films are superior compared to EDA‐PU film. Higher water contact angle and residual weight percentage of SPU films confirm silylation of PU by [3‐(phenylamino)propyl]trimethoxysilane (PAPTMS). Increase in NCO/OH ratios consumes more quantity of PAPTMS which makes PU with superior mechanical properties. Higher PAPTMS content in SPU results in effective crosslinking of the functional silanol groups formed by hydrolysis reaction of trimethoxysilane groups. Overall, SPUs synthesized at 1.4 NCO/OH ratio using Poly‐(oxytetramethylene)glycol (PTMG)‐2000 and isophorone diisocyanate (or) toluene‐2,4‐diisocyanate have excellent properties compared to SPUs prepared using PTMG‐1000 and at 1.2 and 1.6 NCO/OH ratios. SPUs prepared at 1.6 NCO/OH ratio are brittle due to higher crosslinking density. In addition, the crosslinking density of the films can be modified through silane end‐group modification to produce SPUs with a wide range of physical properties. Copyright © 2007 John Wiley & Sons, Ltd.
Tei index for prenatal diagnosis of acute fetal hypoxia due to intermittent umbilical cord occlusion in an animal model
Authors: Guorong Lv , Shaozheng He , Zhenghua Wang , Boyi Li , Qiuyue Chen , Peng Jin , Ruiyuan Su 
Published: July 2007

AbstractObjectiveTo study the effectiveness of the pulsatility index for veins of ductus venosus (DV‐PIV) and the Tei index in a prospective assessment of fetal hypoxic‐ischemic brain damage in a near‐term ovine fetus model with intermittent umbilical cord occlusion (UCO).MethodsTwelve fetal sheep were studied with umbilical cord occlusion performed in the experimental group animals by complete inflation of an occluder cuff for 90 s, every 30 min for approximately 2.5 h. Fetal arterial blood was sampled at 5 min before the first umbilical cord occlusions, approximately 60 s of the first umbilical cord occlusions, and 3 min after each occlusion for blood gas, pH, neuron‐specific enolase (NSE) and S100B. Doppler measurements and Doppler echocardiographic examinations were performed 5 min before the first umbilical cord occlusions and 3 min after each successive occlusion.ResultsIn experimental group animals, UCO caused a large decline in arterial PaO2 (to ∼7.70 mmHg, p < 0.01), a modest decline in pH (to ∼7.24, p < 0.01), and a modest rise in PaCO2 (to ∼53.31 mmHg, p < 0.01), with a return more or less to baseline after occluder release. and there was significant change as compared with the control animals (all p < 0.01) with cumulative changes in responses to repetitive cord occlusions. The DV‐PIV waveforms, right ventricle (RV) and LV Tei indices, the serum levels of NSE and S100B increased with cord occlusions (all p < 0.05), and were significantly higher than the control animals (all p < 0.05) with a cumulative changes in responses to repetitive cord occlusions. RV and LV Tei indices were significantly correlated with PaO2 (r = − 0.684, p < 0.01 and r = − 0.725, p < 0.01), PaCO2 (r = 0.682, p < 0.01 and r = 0.780, p < 0.01), pH (r = − 0.538, p < 0.01 and r = − 0.681, p < 0.01), NSE (r = 0.653, p < 0.01 and r = 0.687, p < 0.01), and S100B (r = 0.606, p < 0.01 and r = 0.640, p < 0.01). Significant but weaker correlations were also present between DV‐PIV and the parameters considered.ConclusionUmbilical cord occlusion during the latter part of the pregnancy, enough to cause significant hypoxemia and acidosis, results in a significant increase of DV‐PIV, RV and LV Tei indices, and the serum levels of NSE and S100B. There was a strong correlation between the RV and LV Tei indices and blood gas, pH, and NSE, S100B with hypoxia. Therefore, the Tei index might be an easy and useful quantitative parameter for assessing fetal hypoxic ischemia. Copyright © 2007 John Wiley & Sons, Ltd.
myProMS, a web server for management and validation of mass spectrometry‐based proteomic data
Authors: Poullet Patrick , Carpentier Sabrina , Barillot Emmanuel 
Published: July 2007

AbstractCuration and interpretation of protein databank‐search results by human experts are key aspects of MS‐based proteomic data acquisition. These tasks are often overlooked due to the vast amount of data to inspect. We have developed myProMS, a web server designed to ease search results validation and interpretation by improving data organization, mining and sharing between MS specialists and biologists during MS‐based collaborative projects. A demo is accessible at http://bioinfo.curie.fr/myproms.
Ontologies, categories, folksonomies: an organised language of sound
Authors: Fields Kenneth 
Published: July 2007

AbstractThe views of categorisation presented in this paper along with my own are for the purpose of providing background for current taxonomic projects related to electroacoustic music (e.g. EARS: ElectroAcoustic Resource Site). The views might be summarised as top-down (ontology) as described in Peterson, bottom-up (folksonomy) as described in Shirkey and Weinberger, and a view from the middle ground (TagOntology) as described in Gruber. Semantic Wikipedia enters this discourse in relation to what one might call folk-ontology. It is crucial to conduct experimentation with minimal specifications and practical methodologies in order to facilitate the interoperability of dynamic, emergent knowledge bases within the Semantic Web context.
Functional analysis of macrophages, B cells and splenic dendritic cells as antigen‐presenting cells in West Nile virus‐specific murine T lymphocyte proliferation
Authors: KULKARNI A. B. , MÜLLBACHER A. , BLANDEN R. V. 
Published: July 2007

SummaryIn this paper, the relative efficacy of macrophages, B cells and splenic dendritic cells (SDC) in presenting West Nile virus (WNV) antigens to WNV memory CD4+ T cells is examined. The results indicate that, under appropriate conditions, all these ceil types can function as antigen‐presenting cells (APC). Listeria‐induced peritoneal macrophages induced higher proliferative responses than SDC or B cells derived from naive or 14 day WNV‐primed mice. The ability of Listeria‐induced macróphage populations to present antigen was specifically inhibited by anti‐Class II major histocompatibility complex (MHC) antibodies. On a cell population basis. B cells obtained from mice primed with WNV 14 days previously evoked higher responses than resting B cells. B cells from mice receiving weekly injections of WNV over a period of 4 weeks elicited optimal responses with lowerdoses of antigen than naive or 14 day WNV‐primed B cells. When macrophages were used as APC. addition of specific antibodies to WNV resulted in increased efficiency of presentation, probably due to increased uptake of antigen by opsonization. In contrast, addition of anti‐WNV antibodies to hyperimmune B cells reduced their efficacy presumably by reducing uptake of antigen by B cell surface immunoglobulin. When SDC from C57BL/6 mice were used as APC. WNV‐specific proliferative responses were directly related to the number of stimulator cells used, and the background proliferation with mock antigen was two‐ to five‐fold lower than specific responses. Higher levels of background proliferation were stimulated by SDC from CBA/H mice so that the antigen‐specific responses were always less than two‐fold higher than background.