bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ectopic expression of macrophage scavenger receptor MARCO in synovial membrane‐like interface tissue in aseptic loosening of total hip replacement implants
Authors: Zhao De‐Sheng , Ma Guo‐Feng , Selenius Mikko , Salo Jari , Pikkarainen Timo , Konttinen Yrjö T. 
Published: February 2009

AbstractMacrophage receptor with collagenous structure (MARCO) is a scavenger receptor with a very limited expression in healthy tissues. It was hypothesized that foreign body wear debris induces it to participate in handling of implant‐derived particles in human synovial membrane‐like tissue around aseptically loosening total hip replacement implants. A DNA microarray study showed that MARCO was upregulated in human monocytes by polymethyl methacrylate particles in cell culture. MARCO mRNA and protein were strongly expressed in numerous CD68 positive macrophages and foreign body giant cells in interface membrane lining and stroma around cemented implants, but was only present in a few cells in synovial membrane from osteoarthritis patients. A 65‐kDa MARCO‐reactive band was only found in interface tissue extracts. This is the first work to show upregulation of MARCO mRNA by foreign bodies in vitro. This is paralleled in vivo as MARCO mRNA and protein were over‐expressed in chronic foreign body synovitis. As scavenger receptor MARCO apparently participates in handling of wear particles, which due to their nondegradable, irritating nature initiate/perpetuate foreign body inflammation, and peri‐implant osteolysis. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res, 2010
Migration of wear debris of polyethylene depends on bone microarchitecture
Authors: Libouban Hélène , Massin Philippe , Gaudin Christine , Mercier Philippe , Baslé Michel F. , Chappard Daniel 
Published: February 2009

AbstractThe mechanism of hip arthroplasties loosening is related to the migration of wear debris throughout the implant environment. In vivo, polyethylene particles (PE) were shown to infiltrate the bone implant interface and the medullary spaces of the cancellous bone. Our test hypothesis was that polyethylene particle migration is correlated to bone porosity. Bone samples with a high or low trabecular volume and microarchitecture were harvested in 20 calves and 20 human cadavers. They were extensively washed to remove marrow cells. Bone cylinders were filled with a light‐curing monomer having the same viscosity as bone marrow. PE particles (7 and 33 μm) were deposited at the surface of the polymer. The bone cylinders were agitated during 7 days on an orbital shaker and the gel was left to polymerize at day light. X‐ray microtomography was performed to characterize bone volume and microarchitecture. Cylinders were sectioned and observed under polarized light. The migration distance and rate were determined. Migration of PE particles strongly depended on trabecular bone volume and microarchitecture. We found a linear relationship (r = 0.61) between speed migration and bone volume and an exponential relationship between speed migration and bone architecture. The present in vitro model confirmed our hypothesis about the key role of bone microarchitecture in the migration of large PE wear particles. This is an explanation for the development of inflammatory reaction at distance from a prosthesis although our study did not include submicron particles. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2009
Differences scores: regression‐based reliable difference and the regression‐based confidence interval
Authors: Charter Richard A. 
Published: February 2009

AbstractOver 50 years ago Payne and Jones (1957) developed what has been labeled the traditional reliable difference formula that continues to be useful as a significance test for the difference between two test scores. The traditional reliable difference is based on the standard error of measurement (SEM) and has been updated to a confidence interval approach. As an alternative to the traditional reliable difference, this article presents the regression‐based reliable difference that is based on the standard error of estimate (SEE) and estimated true scores. This new approach should be attractive to clinicians preferring the idea of scores regressing toward the mean. The new approach is also presented in confidence interval form with an interpretation that can be viewed as a statement of all hypotheses that are tenable and consistent with the observed data and has the backing of several authorities. Two well‐known conceptualizations for true score confidence intervals are the traditional and regression‐based. Now clinicians favoring the regression‐based conceptualization are not restricted to the use of traditional model when testing score differences using confidence intervals. © 2009 Wiley Periodicals, Inc. J Clin Psychol 65: 1–5, 2009.
Psychotherapeutic case conceptualization using plan analysis for bipolar affective disorder
Authors: Kramer Ueli , Berger Thomas , Caspar Franz 
Published: February 2009

AbstractValid individualized case conceptualization methodologies, such as plan analysis, are rarely used for the psychotherapeutic treatment conceptualization and planning of bipolar affective disorder (BD), even if data do exist showing that psychotherapy interventions might be enhanced by applying such analyses for treatment planning for several groups of patients. We applied plan analysis as a research tool (Caspar, 1995) to N=30 inpatients presenting BD, who were interviewed twice. Our study aimed at producing a prototypical plan structure encompassing the most relevant data from the 30 individual case conceptualizations. Special focus was given to links with emotions and coping plans. Inter‐rater reliability of these plan analyses was considered sufficient. Results suggest the presence of two subtypes based on plananalytic principles: emotion control and relationship control, along with a mixed form. These subtypes are discussed with regard to inherent plananalytic conflicts, specific emotions and coping plans, as well as symptom level and type. Finally, conclusions are drawn for enhancing psychotherapeutic practice with BD patients, based on the motive‐oriented therapeutic relationship. © 2009 Wiley Periodicals, Inc. J Clin Psychol 65: 1–16, 2009.
Precoloring extension for K4‐minor‐free graphs
Authors: Pruchnewski Anja , Voigt Margit 
Published: February 2009

AbstractLet G=(V, E) be a graph where every vertex v∈V is assigned a list of available colors L(v). We say that G is list colorable for a given list assignment if we can color every vertex using its list such that adjacent vertices get different colors. If L(v)={1, …, k} for all v∈V then a corresponding list coloring is nothing other than an ordinary k‐coloring of G. Assume that W⊆V is a subset of V such that G[W] is bipartite and each component of G[W] is precolored with two colors taken from a set of four. The minimum distance between the components of G[W] is denoted by d(W). We will show that if G is K4‐minor‐free and d(W)≥7, then such a precoloring of W can be extended to a 4‐coloring of all of V. This result clarifies a question posed in 10. Moreover, we will show that such a precoloring is extendable to a list coloring of G for outerplanar graphs, provided that |L(v)|=4 for all v∈V\W and d(W)≥7. In both cases the bound for d(W) is best possible. © 2009 Wiley Periodicals, Inc. J Graph Theory 60: 284‐294, 2009
Rapid Lateglacial tree population dynamics and ecosystem changes in the eastern Baltic region
Authors: Heikkilä Maija , Fontana Sonia L. , Seppä Heikki 
Published: February 2009

AbstractA growing body of evidence implies that the concept of 'treeless tundra' in eastern and northern Europe fails to explain the rapidity of Lateglacial and postglacial tree population dynamics of the region, yet the knowledge of the geographic locations and shifting of tree populations is fragmentary. Pollen, stomata and plant macrofossil stratigraphies from Lake Kurjanovas in the poorly studied eastern Baltic region provide improved knowledge of ranges of north‐eastern European trees during the Lateglacial and subsequent plant population responses to the abrupt climatic changes of the Lateglacial/Holocene transition. The results prove the Lateglacial presence of tree populations (Betula, Pinus and Picea) in the eastern Baltic region. Particularly relevant is the stomatal and plant macrofossil evidence showing the local presence of reproductive Picea populations during the Younger Dryas stadial at 12 900–11 700 cal. a BP, occurring along with Dryas octopetala and arctic herbs, indicating semi‐open vegetation. The spread of Pinus–Betula forest at ca. 14 400 cal. a BP, the rise of Picea at ca. 12 800 cal. a BP and the re‐establishment of Pinus–Betula forest at ca. 11 700 cal. a BP within a span of centuries further suggest strikingly rapid, climate‐driven ecosystem changes rather than gradual plant succession on a newly deglaciated land. Copyright © 2009 John Wiley & Sons, Ltd.
Density functional theory study and vibrational analysis of FT‐IR and FT‐Raman spectra of N‐hydroxyphthalimide
Authors: Krishnakumar V. , Sivasubramanian M. , Muthunatesan S. 
Published: February 2009

AbstractThe Fourier transform infrared (FT‐IR) spectrum of N‐hydroxyphthalimide has been recorded in the range of 4000–400 cm−1, and the Fourier transform Raman (FT‐Raman) spectrum of N‐hydroxyphthalimide has been recorded in the range of 4000–50 cm−1. With the hope of providing more and effective information on the fundamental vibrations, the Density Functional Theory (DFT)‐Becke3‐Lee‐Yang‐Parr (B3LYP) level with 6‐31G* basis set has been employed in quantum chemical analysis, and normal coordinate analysis has been performed on N‐hydroxyphthalimide by assuming Cs symmetry. The computational wavenumbers are in good agreement with the observed results. The theoretical spectra obtained along with intensity data agree well with the observed spectra. Copyright © 2009 John Wiley & Sons, Ltd.
Clinically important aspects of lymph node assessment in colon cancer
Authors: Wright Frances C. , Law Calvin H.L. , Berry Scott , Smith Andrew J. 
Published: February 2009

AbstractThere has been considerable discussion in the literature regarding the importance and validity of lymph node retrieval and lymph node count for patients with colon cancer. In this article we summarize the importance of lymph node resection and assessment in contemporary colon cancer care, key clinical determinants of lymph node assessment, and discuss the role of lymph node assessment as a quality marker in colon cancer care. J. Surg. Oncol. 2009;99:248–255. © 2009 Wiley‐Liss, Inc.
Learning and change: Deciding whether and how to take on a coach
Authors: Riddle Douglas 
Published: February 2009

AbstractLeadership coaching can be a powerful method for learning and change when it is used in the right circumstances and when appropriate lessons are sought. It is not the right solution for every kind of growth or development, but there are situations that lend themselves to coaching. Here's a guide to what leadership coaching is, how to decide whether it is appropriate for your situation, and how to proceed if you do enter into a coaching relationship.
Double‐pass, low‐fluence laser treatment using a large spot‐size 1,450 nm laser improves acne
Authors: Bernstein Eric F. 
Published: February 2009

AbstractBackgroundLaser treatment using a 1,450 nm diode laser has been shown to improve acne and acne scarring. Its widespread adoption in younger populations has been significantly limited by discomfort. A new double‐pass protocol reduced pain, but doubled treatment time. A new laser with a fourfold larger area treatment beam was developed to decrease treatment time and improve efficacy.Materials and MethodsThirteen subjects with active papular acne were enrolled in the study. Subjects were treated 4 times at monthly intervals using an average fluence of 7.8 J/cm2, a 12 mm spot and an average dynamic cooling device setting of 42.2, treating the entire face with 2 laser passes. Acne counts, Allen‐Smith acne grades and standardized digital photography were performed 2 months following the final treatment, and compared to pre‐treatment counts and photographs.ResultsImprovement in 11 subjects completing treatment evaluated by physician observers comparing pre‐ and post‐treatment photographs was rated as none to mild improvement in three subjects, moderate improvement in six subjects, and marked improvement in two subjects. Allen Smith acne scores decreased from 2.7 pre‐treatment to 2.0 post‐treatment, and lesion counts decreased from an average of 34.4 pre‐treatment to 16.1, 2 months post‐treatment. Pain ratings on a 1 (min) to 10 (max) scale averaged 4.9 (range 1–10). All subjects rated their skin as less oily at the follow‐up period.ConclusionsLow‐energy, double pass 1,450 nm laser treatment with a larger 12 mm‐diameter spot size effectively reduces acne counts 2 months post‐treatment. Lasers Surg. Med. 41:116–121, 2009. © 2009 Wiley‐Liss, Inc.
Revisiting optical clearing with dimethyl sulfoxide (DMSO)
Authors: Bui Albert K. , McClure R. Anthony , Chang Jennell , Stoianovici Charles , Hirshburg Jason , Yeh Alvin T. , Choi Bernard 
Published: February 2009

AbstractFunctional optical characterization of disease progression and response to therapy suffers from loss of spatial resolution and imaging depth due to scattering. Here we report on the ability of dimethyl sulfoxide (DMSO) alone to reduce the optical scattering of skin. We observed a threefold reduction in the scattering of skin with topical DMSO application. With an in vivo window chamber model, we observed a threefold increase in light transmittance through the preparation and enhanced visualization of subsurface microvasculature. Collectively, our data demonstrate the potential of DMSO alone to mitigate effects of scattering, which we expect will improve molecular imaging studies. Lasers Surg. Med. 41:142–148, 2009. © 2009 Wiley‐Liss, Inc.
Comparative Methods for the Evaluation of Protein Adsorption
Authors: Servoli Eva , Maniglio Devid , Aguilar Maria Rosa , Motta Antonella , Vazquez Blanca , Roman Julio San , Migliaresi Claudio 
Published: February 2009

AbstractAFM, Immunogold labeling and SPR have been successfully applied to the analysis of protein adsorption on fibroin substrates, chosen as a paradigmatic biomaterial. The process was evaluated both under static and dynamic conditions, also considering the effect of protein competition. AFM via antibody‐modified tips provided maps of protein adsorption and information on protein‐protein interactions. Double labeling Immunogold imaged protein distribution upon competitive adsorption. SPR described the dynamics of the process, offering also quantitative data both from individual and two‐component protein solutions. The integration of these analytical techniques and the critical evaluation of the results can provide a detailed description of protein adsorption.magnified image
Toward Main Chain Metallo‐Terpyridyl Supramolecular Polymers: “The Metal Does the Trick”
Authors: Chiper Manuela , Hoogenboom Richard , Schubert Ulrich S. 
Published: February 2009

AbstractMetallo‐supramolecular chemistry offers possibilities for the construction of stimuli‐responsive polymeric materials where the environment can have a large impact on the reversibility and strength of interactions between the individual components. The potential of manipulating the strength of the intermolecular non‐covalent bonds can result in impressive modifications of the metallo‐supramolecular structure and, subsequently, produces changes in the properties of the designed material. The present feature article provides an overview on recent developments in the field of metallo‐polymerization of chelating terpyridyl and analogues ligands. Synthetic strategies are described followed by a discussion regarding the characterization and the application of the reviewed metallo‐supramolecular structures, mainly based on terpyridines.magnified image
Supramolecular Network Based on the Self‐Assembly of γ‐Cyclodextrin with Poly(ethylene glycol) and its Shape Memory Effect
Authors: Fan Min‐Min , Yu Zhi‐Jun , Luo Hai‐Ya , Zhang Sheng , Li Bang‐jing 
Published: February 2009

AbstractA novel supramolecular network has been prepared based on the formation of inclusion complexes between γ‐cyclodextrin and poly(ethylene glycol), in which the PEG chains are interlocked by γ‐CD rings. This PEG/γ‐CD network exhibits good shape memory behavior because of the crosslinked structure. The crosslinked PEG/γ‐CD inclusion complexes and PEG crystallites account for the fixing phase and reversible phase, respectively. The characteristics of the materials have been investigated by 1H NMR spectroscopy, XRD, DSC, DMA, viscosity tests, and swelling measurements.magnified image
Patterned Hydrogel Layers Produced by Electrochemically Triggered Polymerization
Authors: Bünsow Johanna , Johannsmann Diethelm 
Published: February 2009

AbstractWe report on a lithographic mode of electrochemically triggered free radical polymerization. The polymerization is initiated by the reduction of an electrochemically active initiator. Hydrogel patterns can be written by employing a small insulated counter electrode. The investigations show that the “pen” actually is a small oxygen bubble between the counter electrode and the sample surface. The spot size corresponds to the size of the bubble produced between the counter electrode and the substrate. The gas/liquid interface traps the growing chains and guides the growth of a gel layer at the bubble surface. Since bubbles can be created and controlled in many different ways, this mechanism constitutes an easy route for the formation of structured, surface‐bound polymer layers.magnified image
Amplified Fluorescence Turn‐On Assay for Mercury(II) Detection and Quantification based on Conjugated Polymer and Silica Nanoparticles
Authors: Wang Yusong , Liu Bin 
Published: February 2009

AbstractAn amplified fluorescence turn‐on assay for mercury(II) detection and quantification was developed. This method makes use of specific thymine/mercury(II)/thymine coordination to capture Fl‐labeled DNA onto NP surface. Addition of a cationic conjugated polymer leads to an amplified Fl signal in solution. A sigmoidal Hg2+ working curve is obtained at fixed [NP] with a detection limit of 0.1 × 10−6 M. However, by reducing [Hg2+] and [NP] simultaneously, while maintaining [Hg2+]:[DNA duplex] = 3:1, a linear calibration curve is observed with a detection limit of 5 × 10−9 M. The CCP‐assisted mercury(II) assay shows potential applications in environmental mercury detection and for industrial process control.magnified image
New Approach in Modeling of Metallocene‐Catalyzed Olefin Polymerization Using Artificial Neural Networks
Authors: Ahmadi Mostafa , Nekoomanesh Mehdi , Arabi Hassan 
Published: February 2009

AbstractA new approach for the estimation of kinetic rate constants in olefin polymerization using metallocene catalysts is presented. The polymerization rate has been modeled using the method of moments. An ANN has been used and trained to behave like the mathematical model developed before, so that it gets polymerization rate at different reaction times and predicts reaction rate constants. The network was trained using modeling results in desired operational window. The polymerization rates were normalized to make the network work independent of operational conditions. The model has also been applied to real polymerization rate data and the predictions were satisfactory. This model is specially useful in comparing different new metallocene catalysts.magnified image
Lesions outside the CNS in Parkinson's disease
Authors: Djaldetti Ruth , Lev Nirit , Melamed Eldad 
Published: February 2009

AbstractParkinson's disease (PD) is not a simple movement disorder induced just by loss of dopaminergic neurons in the substantia nigra pars compacta. Apparently, the substantia nigra is not the only or the first brain region damaged in PD. Moreover, older and recent studies have shown that the degenerative process in PD is much more extensive and affects not only the central nervous system (CNS) but also the peripheral autonomic nervous system and the organs outside the brain that the latter innervates. These include mainly the gastrointestinal tract, the heart, kidneys, urogenital system, and skin. Additional extra‐CNS organs that are involved in PD include the eye and the adrenal gland. This article reviews the anatomical, physiological, and clinical features of extracerebral manifestations of PD, and describes their relevance to the etiology and pathogenesis of the disease. It establishes this illness as a systemic CNS and peripheral disorder that warrants new hypotheses regarding its causation and progression. © 2009 Movement Disorder Society
Catchment dynamics and social response during flash floods: the potential of radar rainfall monitoring for warning procedures
Authors: Creutin Jean Dominique , Borga Marco , Lutoff Céline , Scolobig Anna , Ruin Isabelle , Créton‐Cazanave L. 
Published: February 2009

AbstractThe objective of this paper is to examine how current techniques for flash‐flood monitoring and forecasting can meet the needs of the population at risk to evaluate the flood severity and anticipate its danger. To this end, the social response time for different social actions in the course of two well studied flash flood events which occurred in France and Italy is identified. The event management activities are broadly characterized into three types according to their main objective (information, organisation and protection). The activities are also classified into three other types according to the scale and nature of the human group involved (individuals, communities and institutions). The conclusions reached relate to (1) the characterisation of the social responses according to watershed scale and to the information available, and (2) to the appropriateness of the existing surveillance and forecasting tools to support the social responses. Results suggest that representing the dynamics of the social response with just one number representing the average time for warning a population is an oversimplification. It appears that the social response time exhibits a parallel with the hydrological response time, by diminishing in time with decreasing size of the relevant watershed. A second result is that the human groups have different capabilities of anticipation, apparently based on the nature of information they use. Comparing watershed response times and social response times shows clearly that at scales of less than 100 km2, a number of actions were taken with response times comparable to the catchment response time. The implications for adapting the warning processes to social scales (individual or organisational scales) are considerable. At small scales, and for the implied anticipation times, the reliable and high‐resolution description of the actual rainfall field becomes the major source of information for decision‐making processes such as deciding between evacuations or advising to stay home. This points to the need to improve the accuracy and quality control of real time radar rainfall data, especially for extreme flash flood‐generating storms. Copyright © 2009 Royal Meteorological Society
Sobolev and strict continuity of general hysteresis operators
Authors: Recupero Vincenzo 
Published: February 2009

AbstractThe most natural and important topologies connected with hysteresis operators are those induced by uniform convergence,W1, 1‐convergence, and strict convergence. Indeed the supremum norm and the variation are invariant under reparameterization. We prove a general result that implies that if a hysteresis operator is continuous with respect to the topology ofW1, 1, then it is continuous with respect to the strict topology. Copyright © 2009 John Wiley & Sons, Ltd.