bluuebunny/crossref_metadata_2025_split huggingface dataset:
Luminescent Polymeric Dispersions and Films Based on Oligonuclear Lanthanide Clusters
Authors: Hauser Christoph P. , Thielemann Dominique T. , Adlung Matthias , Wickleder Claudia , Roesky Peter W. , Weiss Clemens K. , Landfester Katharina 
Published: December 2010

AbstractThe successful embedding of different amounts and types of hydrophobic rare earth clusters (Ln = Y, Pr, Eu, Sm, Nd) in various polymer matrices via miniemulsion polymerization is presented. The resulting cluster‐polymer hybrid nanoparticles are spherical in shape and possess a narrow size distribution, as investigated by photon cross correlation spectroscopy (PCCS) and transmission electron microscopy (TEM). The exact Ln‐content in the nanoparticles is exemplarily investigated for Eu‐ and Nd‐containing polymer dispersions via inductively coupled plasma‐optical emission spectrometry (ICP‐OES). As a result of encapsulation more than 1000 mg · L−1 of the hydrophobic Ln‐cluster are successfully dispersed in water. The photophysical properties of the emulsion show the successful avoidance of water from the vicinity of the clusters. Furthermore, a very efficient energy transfer from the ligand and polymeric unit to Eu3+ ions can be observed in dispersion. Based on the different glass transition temperatures (Tg) of the applied polymers, monolayers of the nanoparticles and efficient luminescent thin polymer films are obtained by spin coating. magnified image
Current Awareness in NMR in Biomedicine
Authors:   John Wiley & Sons, Ltd.
Published: December 2010

AbstractIn order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of NMR in biomedicine. Each bibliography is divided into 12 sections: 1 Reviews; 2 General; 3 Technology; 4 Contrast Agents; 5 Brain and Nerves; 6 Neuropathology; 7 Cancer; 8 Cardiac, Vascular and Respiratory Systems; 9 Liver, Kidney and Other Organs; 10 Muscle and Orthopaedic; 11 Plants, Micro‐organisms and Parasites; 12 Others. Within each section, articles are listed in alphabetical order with respect to author. If, in the preceding period, no publications are located relevant to any one of these headings, that section will be omitted.
Multi‐LAN approach to LAN/WAN internetworking
Authors: Corr Peter 
Published: December 2010

AbstractThe multi‐LAN concept is a newly evolved approach to LAN internetworking that realizes multiple advantages over classical solutions while incorporating all of their desirable properties. The multi‐LAN access manager possesses the simplicity, protocol transparency and performance of bridging techniques and most of the security capabilities and packet‐switching network capabilities afforded by routing techniques, coupled with an evolutionary leap in performance. In addition, the multi‐LAN access manager supports a centralized, comprehensive, network management and diagnostic capability.
Codex's DualVIEW management option: Enabling two windows on the network
Authors: Robbins Leonard , Casaly Barbara 
Published: December 2010

AbstractThe DualVIEW™ Management Option allows several types of Codex transmission devices to function compatibly with NetView, IBM's network management software. In addition, because DualVIEW‐equipped devices can operate also in conjunction with a Codex Network Management System (NMS), users can benefit from the strengths of both network managers. This article explains how the DualVIEW Option works, and it looks in detail at the user interface that each management system provides.
The weak link
Authors: Hanson David 
Published: December 2010

AbstractPublic network reliability has become a mandatory issue. In the second quarter of 1991 alone, there were 331 switch‐related outages, which affected more than 3.5 million phone lines and lasted an average of 45 minutes each. The carriers are trying but they still represent the ‘Weak Link’ in data and voice communications. There will be improvements but will they be enough?
Does speed matter? A comparison of the effectiveness of fluency and discrete trial training for teaching noun labels to children with autism
Authors: Holding Erica , Bray Melissa A. , Kehle Thomas J. 
Published: December 2010

AbstractThis study used an alternating‐treatment design to compare the efficacy of discrete trial training (DTT) with fluency training (FT) for the acquisition, stimulus generalization, and retention of noun labels in children with autism. Four elementary‐age students diagnosed with autism were taught to expressively label nouns using a DTT format and a FT format. A between‐treatments comparison of the total number of nouns retained at 6 weeks post intervention was also conducted to compare retention. The results of this study showed that FT was superior to DTT in all of these areas. © 2010 Wiley Periodicals, Inc.
Plasma Electrochemistry in 1‐Butyl‐3‐methylimidazolium dicyanamide: Copper Nanoparticles from CuCl and CuCl2
Authors: Kulbe Norman , Höfft Oliver , Ulbrich Angela , Zein El Abedin Sherif , Krischok Stefan , Janek Jürgen , Pölleth Manuel , Endres Frank 
Published: December 2010

AbstractWe report on the reaction of CuCl and CuCl2, each dissolved in 1‐butyl‐3‐methylimidazolium dicyanamide ([BMIm]dca), with a glow discharge argon plasma. The interaction of the plasma with the solutions exhibits a strong reaction with gas evolution and the growth of copper nanoparticles. The particle size was determined with transmission electron microscopy (from the particle/ionic liquid, IL solution). The chemical composition was investigated by ex situ X‐ray photoelectron spectroscopy (XPS). We found that the mean diameter of the copper particles produced in CuCl/[BMIm]dca and CuCl2/[BMIm]dca was in the same order of magnitude (between 2 and 10 nm). Despite the strong reaction we found no hints for IL degradation products in the liquids with infrared spectroscopy. XPS showed that ex situ treatment of the particles leads to the formation of CuO. magnified image
An accurate model of polyglutamine
Authors: Digambaranath Jyothi L. , Campbell Tyler V. , Chung Alfred , McPhail Michael J. , Stevenson Karis E. , Zohdy Mohamed A. , Finke John M. 
Published: December 2010

AbstractPolyglutamine repeats in proteins are highly correlated with amyloid formation and neurological disease. To better understand the molecular basis of glutamine repeat diseases, structural analysis of polyglutamine peptides as soluble monomers, oligomers, and insoluble amyloid fibrils is necessary. In this study, fluorescence resonance energy transfer (FRET) experiments and molecular dynamics simulations using different theoretical models of polyglutamine were conducted. This study demonstrates that a previously proposed simple CαCβmodel of polyglutamine, denoted as FCO, accurately reproduced the present FRET results and the results of previously published FRET, triplet‐state quenching, and fluorescence correlation studies. Other simple CαCβmodels with random coil and extended β‐strand parameters, and all‐atom models with parm96 and parm99SB force fields, did not match the FRET result well. The FCO is an intrinsically disordered model with a high‐effective persistence length producing extended peptides at short lengths (QN< 10). Because of an increasing number of attractive Q–Q interactions at longer lengths, the FCO model becomes increasingly more compact at lengths between QN∼ 10–16 and is as compact as many folded proteins at QN> 16. Proteins 2011. © 2010 Wiley‐Liss, Inc.
Free‐energy landscape of the GB1 hairpin in all‐atom explicit solvent simulations with different force fields: Similarities and differences
Authors: Best Robert B. , Mittal Jeetain 
Published: December 2010

AbstractAlthough it is now possible to fold peptides and miniproteins in molecular dynamics simulations, it is well appreciated that force fields are not all transferable to different proteins. Here, we investigate the influence of the protein force field and the solvent model on the folding energy landscape of a prototypical two‐state folder, the GB1 hairpin. We use extensive replica‐exchange molecular dynamics simulations to characterize the free‐energy surface as a function of temperature. Most of these force fields appear similar at a global level, giving a fraction folded at 300 K between 0.2 and 0.8 in all cases, which is a difference in stability of 2.8 kT, and are generally consistent with experimental data at this temperature. The most significant differences appear in the unfolded state, where there are different residual secondary structures which are populated, and the overall dimensions of the unfolded states, which in most of the force fields are too collapsed relative to experimental Förster Resonance Energy Transfer (FRET) data. Proteins 2011. © 2010 Wiley‐Liss, Inc.
The impact of dopant compensation on the boron–oxygen defect in p‐ and n‐type crystalline silicon
Authors: Macdonald D. , Liu A. , Cuevas A. , Lim B. , Schmidt J. 
Published: December 2010

AbstractWe review recent results relating to the boron–oxygen defect in compensated crystalline silicon for solar cells. The experimental observations are not easily explained by the standard model for the boron–oxygen defect, which involves substitutional boron. In addition, the proposed presence of boron–phosphorus pairs as a possible explanation for these findings is inconsistent with numerous other results. A recently proposed new model for the defect, based on interstitial boron, appears to resolve these problems. In this paper we attempt to extend this model to the case of boron‐containing n‐type silicon. The model predicts that the defect will occur in such material, as has been observed experimentally. However, the tentatively predicted impact of the defect on carrier lifetimes in such material does not appear to be consistent with recent experimental results.
Smooth random change point models
Authors: van den Hout Ardo , Muniz‐Terrera Graciela , Matthews Fiona E. 
Published: December 2010

AbstractChange point models are used to describe processes over time that show a change in direction. An example of such a process is cognitive ability, where a decline a few years before death is sometimes observed. A broken‐stick model consists of two linear parts and a breakpoint where the two lines intersect. Alternatively, models can be formulated that imply a smooth change between the two linear parts. Change point models can be extended by adding random effects to account for variability between subjects. A new smooth change point model is introduced and examples are presented that show how change point models can be estimated using functions in R for mixed‐effects models. The Bayesian inference using WinBUGS is also discussed. The methods are illustrated using data from a population‐based longitudinal study of ageing, the Cambridge City over 75 Cohort Study. The aim is to identify how many years before death individuals experience a change in the rate of decline of their cognitive ability. Copyright © 2010 John Wiley & Sons, Ltd.
Effects of gabapentin on brain hyperactivity related to pain and sleep disturbance under a neuropathic pain‐like state using fMRI and brain wave analysis
Authors: Takemura Yoshinori , Yamashita Akira , Horiuchi Hiroshi , Furuya Masaharu , Yanase Makoto , Niikura Keiichi , Imai Satoshi , Hatakeyama Noboru , Kinoshita Hiroyuki , Tsukiyama Yoshi , Senba Emiko , Matoba Motohiro , Kuzumaki Naoko , Yamazaki Mitsuaki , Suzuki Tsutomu , Narita Minoru 
Published: December 2010

AbstractNeuropathic pain is the most difficult pain to manage in the pain clinic, and sleep problems are common among patients with chronic pain including neuropathic pain. In the present study, we tried to visualize the intensity of pain by assessing neuronal activity and investigated sleep disturbance under a neuropathic pain‐like state in mice using functional magnetic resonance imaging (fMRI) and electroencephalogram (EEG)/electromyogram (EMG), respectively. Furthermore, we investigated the effect of gabapentin (GBP) on these phenomena. In a model of neuropathic pain, sciatic nerve ligation caused a marked decrease in the latency of paw withdrawal in response to a thermal stimulus only on the ipsilateral side. Under this condition, fMRI showed that sciatic nerve ligation produced a significant increase in the blood oxygenation level‐dependent (BOLD) signal intensity in the pain matrix, which was significantly decreased 2 h after the i.p. injection of GBP. Based on the results of an EEG/EMG analysis, sciatic nerve‐ligated animals showed a statistically significant increase in wakefulness and a decrease in nonrapid eye movement (NREM) sleep during the light phase, and the sleep disturbance was almost completely alleviated by a higher dose of GBP in nerve‐ligated mice. These findings suggest that neuropathic pain associated with sleep disturbance can be objectively assessed by fMRI and EEG/EMG analysis in animal models. Furthermore, GBP may improve the quality of sleep as well as control pain in patients with neuropathic pain. Synapse 2011. © 2010 Wiley‐Liss, Inc.
Prenatal sonographic diagnosis of a congenital oral fibrovascular hamartoma
Authors: Coombs P. R. , Gilbertson T. , Teoh M. 
Published: December 2010

AbstractWe report the diagnosis of a congenital oral fibrovascular hamartoma with two‐ and three‐dimensional ultrasound. The distinctive sonographic features including the fibrovascular stalk and a single vascular pedicle are described. Prenatal magnetic resonance imaging and postnatal computed tomography confirmed the ultrasound findings. Despite concerns about impaired swallowing, the prenatal and perinatal courses were straightforward. The lesion was removed soon after birth. Histopathology of the removed lesion provided the definitive diagnosis of a fibrovascular hamartoma and reported a cellular composition that differentiates it from similar lesions. To our knowledge, such a lesion has not been reported pre‐ or postnatally and provides an alternative differential diagnosis for a fetus presenting with a mouth mass. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.
Bacillus subtilis mRNA decay: new parts in the toolkit
Authors: Bechhofer David H. 
Published: December 2010

AbstractRepresentatives of two new ribonuclease families have recently been discovered in the gram‐positive model organism, Bacillus subtilis. The RNase J family founding members, RNase J1 and RNase J2, are highly homologous but show differential activities. Although both are broad‐specificity endonucleases, only the essential RNase J1 is a 5′ → 3′ exonuclease—a type of ribonuclease activity that was previously thought not to exist in bacteria. Current data suggest that RNase J1 is highly involved in the turnover of mRNA decay intermediates and may also be involved in the initiation of mRNA decay. A second family of ribonucleases is represented by RNase Y, an endonuclease that exerts a large effect on global mRNA half‐life. The presence of these ribonucleases in B. subtilis predicts significant differences from the well‐established model of mRNA decay in Escherichia coli. WIREs RNA 2011 2 387–394 DOI: 10.1002/wrna.66This article is categorized under:

RNA Turnover and Surveillance > Regulation of RNA Stability
RNA Turnover and Surveillance > Turnover/Surveillance Mechanisms
[(p‐Tol3Sn)2MoO4] – A Polymeric Triorganotin Molybdate with (10,3)a Network Structure
Authors: Kondracka Małgorzata , Merzweiler Kurt 
Published: December 2010

Abstract(p‐Tol3Sn)2MoO4 was prepared by the reaction of p‐Tol3SnCl with (NBu4)2[Mo6O19] and (NBu4)OH. The title compound crystallises trigonal with a = 2769.2(2) and c = 3576.3(3) pm, space group R3. The crystal structure consists of MoO4 tetrahedra that are linked by p‐Tol3SnO2 bipyramides to give a 3D network structure and additionally every second MoO4 tetrahedron shares a corner with a terminal p‐Tol3SnO tetrahedron. (p‐Tol3Sn)2MoO4 exhibits an uninodal (10,3)a network which is related to the structure of (NBu4)[(Ph3Sn)3MoO4]·CH3CN.
Local existence and uniqueness of solutions of the weak electrolyte model describing electro‐convection in nematic liquid crystals
Authors: Düll W.‐P. , Schneider G. , Uecker H. 
Published: December 2010

AbstractWe show the local existence and uniqueness of solutions of the most advanced model for the description of electro‐convection in nematic liquid crystals, namely the weak electrolyte model (WEM), which is a mixture of quasilinear parabolic equations and balance laws. We do this by bringing the WEM in a form where a standard iteration scheme can be applied.
Non‐local theory solution of a limited‐permeable mode‐I crack in a piezoelectric/piezomagnetic material plane
Authors: Zhou Z.‐G. , Zhang P.‐W. , Wu L.‐Z. 
Published: December 2010

AbstractThe non‐local theory solution of a limited‐permeable mode‐I crack in a piezoelectric/piezomagnetic media was given by using the generalized Almansi's theorem and the Schmidt method in the present paper. The problem was formulated through Fourier transform into two pairs of dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces. To solve the dual integral equations, the displacement jumps across the crack surfaces were directly expanded as a series of Jacobi polynomials. Numerical examples were provided to show the effects of the lattice parameter, the crack length, the electric permittivity, and the magnetic permeability of the air inside the crack on the stress field, the electric displacement field, and the magnetic field near the crack tip. Different from the classical solution that the present solution exhibits no stress, electric displacement, and magnetic flux singularities at the crack tips in a piezoelectric/piezomagnetic media.
Dimension reduction for damping optimization in linear vibrating systems
Authors: Benner P. , Tomljanović Z. , Truhar N. 
Published: December 2010

AbstractWe consider a mathematical model of a linear vibrational system described by the second‐order differential equation

, where M and K are positive definite matrices, called mass, and stiffness, respectively. We consider the case where the damping matrix D is positive semidefinite. The main problem considered in the paper is the construction of an efficient algorithm for calculating an optimal damping. As optimization criterion we use the minimization of the average total energy of the system which is equivalent to the minimization of the trace of the solution of the corresponding Lyapunov equation AX + X AT = ‐I, where A is the matrix obtained from linearizing the second‐order differential equation. Finding the optimal D such that the trace of X is minimal is a very demanding problem, caused by the large number of trace calculations, which are required for bigger matrix dimensions. We propose a dimension reduction to accelerate the optimization process. We will present an approximation of the solution of the structured Lyapunov equation and a corresponding error bound for the approximation. Our algorithm for efficient approximation of the optimal damping is based on this approximation. Numerical results illustrate the effectiveness of our approach.
Inverse scattering problem for a rigid scatterer or a cavity in elastodynamics
Authors: Gintides D. , Midrinos L. 
Published: December 2010

AbstractWe consider the inverse scattering problem for the shape determination of a rigid scatterer or a cavity in a homogeneous and isotropic elastic medium. Both problems are formulated in R2 for time‐harmonic fields and longitudinal or transversal incident plane waves. Representation of the scattered field as a single‐ or a double‐layer potential, equivalently, leads to a system of two nonlinear integral equations for the density and the parametrization of the boundary. A detailed numerical implementation is presented for computing the corresponding solutions of both systems and numerical reconstructions are given to show the effectiveness of the method.
Laparoscopic Mini‐gastric Bypass for Type 2 Diabetes: The Preliminary Report
Authors: Kim Zisun , Hur Kyung Yul 
Published: December 2010

AbstractBackgroundType 2 diabetes mellitus (T2DM) has become an epidemic health problem worldwide. Compared to Western countries, in Asia, T2DM occurs in patients with a lower body mass index (BMI) due to central obesity and decreased pancreatic β‐cell function. The efficacy of laparoscopic mini‐gastric bypass (LMGB) in obese patients with T2DM has been proven by numerous studies. Treatment outcomes of LMGB for non‐obese T2DM patients are also estimated to be excellent. The aim of the present pilot study was to evaluate the efficacy and safety of LMBG in non‐obese T2DM patients (BMI 25–30 kg/m2).MethodsTen consecutive patients underwent LMGB at our hospital from August 2009 to October 2009. Preoperative data including glycosylated hemoglobin (HbA1c), fasting plasma glucose (FPG), and 2 h postprandial glucose (2‐h PPG) were compared with data collected at 1, 3, and 6 postoperative months.ResultsAll procedures were completed laparoscopically. Mean age of the patients was 46.9 years, mean BMI was 27.2 kg/m2, mean operative time was 150.5 min, and mean postoperative hospital stay was 5.3 days. Neither mortality nor major complications occurred. Mean preoperative glycosylated hemoglobin (HbA1c), fasting plasma glucose (FPG), 2‐h PPG, and C‐peptide level were 9.7%, 222 mg/dl, 343 mg/dl, and 2.78 ng/ml, respectively. At the sixth postoperative month, HbA1c, FPG, 2‐h PPG, and C‐peptide level measured 6.7%, 144 mg/dl, 203 mg/dl, and 2.18 ng/ml.ConclusionsThis preliminary study demonstrated the resolution of hyperglycemia in 70% of non‐obese T2DM patients (BMI 25–30 kg/m2). Although long‐term follow‐up data are required, early operative outcomes were satisfactory in terms of glycemic control and safety of the procedure.
Trends in the Surgical Treatment of Ulcerative Colitis over Time: Increased Mortality and Centralization of Care
Authors: Ellis Michelle C. , Diggs Brian S. , Vetto John T. , Herzig Daniel O. 
Published: December 2010

AbstractBackgroundNew medical therapies available to ulcerative colitis (UC) patients have influenced operative mortality for patients requiring colectomy. We sought to examine trends in treatment and outcome for UC patients treated surgically.MethodsA review of 36,447 UC patients from the Nationwide Inpatient Sample was performed, comparing the pre‐monoclonal antibody era (1990–1996) to the present‐day era (2000–2006). Patients treated with total colectomy with ileostomy or proctocolectomy with ileal pouch were reviewed for outcome measures and practice setting (rural, urban non‐teaching, urban teaching). Our main outcome measures were in‐hospital mortality, length of stay, and total charges.ResultsTotal colectomy (n = 30,362) was performed five times more often than proctocolectomy (n = 6,085). When comparing the two study periods, mortality after total colectomy increased 3.8% to 4.6% (p = 0.0003). This difference was primarily due to increasing mortality in later years; when 1995–1996 was compared to 2005–2006, mortality increased from 3.6% to 5.6% (p < 0.0001). There were no deaths in the proctocolectomy group (p < 0.0001). The distribution by practice setting shifted over the two study periods, decreasing in rural (7.0% to 4.8%) and urban non‐teaching (43.7% to 28.4%) centers, and increasing in urban teaching centers (49.3% to 66.8%). The total inflation‐adjusted charges per patient increased significantly ($34,638 vs. $43,621; p < 0.0001).ConclusionsThe mortality rate after total colectomy is increasing, and the difference is accentuated in the years since widespread use of monoclonal antibody therapy. The care of these patients is being shifted to urban teaching centers and is becoming more expensive.