bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of hyaluronidase, phospholipase, lipid solvent and trypsin on the lubrication of canine flexor digitorum profundus tendon
Authors: Sun Yulong , Chen Meng‐Yi , Zhao Chunfeng , An Kai‐Nan , Amadio Peter C. 
Published: April 2008

AbstractAlthough the flexor digitorum profundus (FDP) tendon's gliding resistance is low, the lubrication mechanism that enables this is unclear. The principal lubricants in joints, such as hyaluronic acid, phospholipids, and lubricin, a lubricating glycoprotein, are known to be present in the canine tendon. In this study, we assessed the effect of these lubricants in the tendon by measuring gliding resistance before and after their removal. Canine FDP tendons were treated with hyaluronidase, phospholipase, lipid solvent, and/or trypsin. The gliding resistance of FDP tendons significantly increased after all treatments (p < 0.05). The largest effect on gliding resistance was observed after trypsin digestion. Scanning electron microscopy and immunostaining for hyaluronic acid and lubricin were used to qualitatively assess the tendon surface after treatments. The trypsin digestion produced the most irregular surface, with many exposed collagen fibers. The results of this study suggest that phospholipids, hyaluronic acid, and protein components are all involved in maintaining the low gliding resistance of the FDP tendon. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 26:1225–1229, 2008
Manipulating the anabolic and catabolic response in bone graft remodeling: Synergism by a combination of local BMP‐7 and a single systemic dosis of zoledronate
Authors: Harding Anna Kajsa , Aspenberg Per , Kataoka Masashi , Bylski David , Tägil Magnus 
Published: April 2008

AbstractRemodeling of a bone graft can be influenced both by anabolic substances, such as a bone morphogenic protein (BMP) and by anticatabolic substances, such as the bisphosphonates. BMPs are potent bone anabolic substances, but also boost catabolism and cause resorption. Bisphosphonates inhibit osteoclast function and can be used to postpone resorption. In the present study a combination of both drugs was explored in a rat bone chamber model. Cancellous bone grafts were treated with either BMP‐7 or saline and placed in a bone chamber implanted in the proximal tibia. After 2 weeks, an injection of either zoledronate 0.1 mg/kg or saline was given subcutaneously. The rats were killed after 6 weeks, and bone ingrowth distance into the graft and graft resorption were measured by histomorphometry. BMP‐7 significantly (p = 0.007) increased new bone ingrowth distance into the graft from 2.0 mm (SD = 0.98 mm) in the controls to 3.1 mm (SD = 0.93 mm). If bisphosphonate was not given, most of the newly formed and old graft bone was resorbed. A single injection of zoledronate significantly (p < 0.001) increased the trabecular volume/total volume to 40% (SD = 9%) compared to 14% (SD = 10%) in the nonbisphosphonate treated. In total, the net amount of bone increased by 400% when BMP‐7 and zoledronate combined was compared to saline. A bone graft can be treated with BMP‐7 to increase new bone formation and at the same time be protected against premature catabolism by a single dose of a bisphosphonate. This combination might be useful in various conditions in orthopedic reconstruction. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 26:1245–1249, 2008
Radiographic analysis of femoroacetabular impingement with Hip2norm—reliable and validated
Authors: Tannast Moritz , Mistry Sapan , Steppacher Simon D. , Reichenbach Stephan , Langlotz Frank , Siebenrock Klaus A. , Zheng Guoyan 
Published: April 2008

AbstractThe purpose of this study was to validate the accuracy, consistency, and reproducibility/reliability of a new method for correction of pelvic tilt and rotation of radiographic hip parameters for pincer type of femoroacetabular impingement on an anteroposterior pelvic radiograph. Thirty cadaver hips and 100 randomized, blinded AP pelvic radiographs were used for investigation. To detect the software accuracy, the calculated femoral head coverage and classic hip parameters determined with our software were compared to reference measurements based on CT scans or conventional radiographs in a neutral orientation as gold standard. To investigate software consistency, differences among the different parameters for each cadaver pelvis were calculated when reckoned back from a random to the neutral orientation. Intra‐ and interobserver comparisons were used to analyze the reliability and reproducibility of all parameters. All but two parameters showed a good‐to‐very good accuracy with the reference measurements. No relevant systematic errors were detected in the Bland–Altman analysis. Software consistency was good‐to‐very good for all parameters. A good‐to‐very good reliability and reproducibility was found for a substantial number of the evaluated radiographic acetabular parameters. The software appears to be an accurate, consistent, reliable, and reproducible method for analysis of acetabular pathomorphologies. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 26:1199–1205, 2008
Association of child sexual abuse and dating victimization with mental health disorder in a sample of adolescent girls
Authors: Hébert Martine , Lavoie Francine , Vitaro Frank , McDuff Pierre , Tremblay Richard E. 
Published: April 2008

AbstractThe study's aim was to assess the association between adolescent girls' recall of child sexual abuse (CSA) and prevalence of dating victimization in early romantic relationships and to explore the link between multiple trauma history and mental disorders. When demographics and teacher‐reported behavioral problems during childhood were controlled, the risk of presenting with at least one internalized or externalized mental health disorder was higher for adolescent girls with multiple victimization (history of CSA and dating victimization) than for adolescents with no multiple trauma history. Results highlight a strong association between reports of multiple traumatic experiences and mental health disorders of teenaged girls and the need to assess for a broader range of victimization experiences in the design of intervention services.
Dediazoniation of 1‐naphthalenediazonium tetrafluoroborate in aqueous acid and in micellar solutions
Authors: Bravo‐Diaz Carlos , Pastoriza‐Gallego Maria Jose , Losada‐Barreiro Sonia , Sanchez‐Paz Veronica , Fernandez‐Alonso Alejandra 
Published: April 2008

AbstractWe have measured the rates and product yields of dediazoniation of 1‐naphthalenediazonium (1ND) tetrafluoroborate in the presence and absence of sodium dodecyl sulfate (SDS) micellar aggregates by employing a combination of UV–vis spectroscopy and high‐performance liquid chromatography (HPLC) measurements. Kinetic data were obtained by a derivatization procedure with product yields were determined by HPLC. HPLC chromatograms show that in aqueous acid and in micellar solutions only one dediazoniation product is formed in significant quantities, 1‐naphthol (NOH), and the observed rate constants (kobs) are the same when 1ND loss is monitored spectrometrically and when NOH formation is monitored by HPLC. Activation parameters were obtained both in the presence and absence of SDS micellar aggregates. In both the systems, the enthalpies of activation are high and the entropies of activation are positive. The enthalpy of activation in the absence of SDS is very similar to that in the presence of SDS micelles, but the entropy of activation is lower by a factor of 4. As a consequence, SDS micelles speed up the thermal decomposition of 1ND and increase kobs by a factor of 1.5 when [SDS] = 0.02 M. In contrast, results obtained in the presence of complexing systems such as crown ethers and polyethers show significant stabilization of the parent arenediazonium ions. Kinetic and HPLC data are consistent with the heterolytic DN + AN mechanism that involves the rate‐determining fragmentation of the arenediazonium ion into a very reactive phenyl cation that reacts competitively with available nucleophiles. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 40: 301–309, 2008
Hardy spaces and integral formulas for 𝒟ℱ𝒩‐domains with arbitrary boundary
Authors: Bauer Wolfram 
Published: April 2008

AbstractLet E be the dual of a Fréchet nuclear space, then it is well‐known that for each open set U in E the space ℋ︁(U) of all holomorphic functions on U is a nuclear Fréchet space. Let 𝒜 be a commutative unital Banach sub‐algebra of all bounded holomorphic functions on U which separates points. Applying the nuclearity of ℋ︁(U) we show that the evaluation on U is given by an integral formula over the Shilov boundary of 𝒜. We obtain Szegö‐ and Bergman kernels together with some boundary estimates. Moreover, we show that there is a notion of Hardy and Bergman space for 𝒟ℱ𝒩‐domains with arbitrary boundary. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Correlation asymptotics for non‐translation invariant lattice spin systems
Authors: Matte Oliver 
Published: April 2008

AbstractWe obtain asymptotic expressions for the Green kernels of certain non‐translation invariant transition matrices using methods of semiclassical and microlocal analysis. Combined with a result by Bach and Møller this yields asymptotic formulas for the truncated two‐point correlation functions of certain non‐translation invariant lattice models of real‐valued spins. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Polynomial approximation on the sphere using scattered data
Authors: Filbir Frank , Themistoclakis W. 
Published: April 2008

AbstractWe consider the problem of approximately reconstructing a function f defined on the surface of the unit sphere in the Euclidean space ℝq +1 by using samples of f at scattered sites. A central role is played by the construction of a new operator for polynomial approximation, which is a uniformly bounded quasi‐projection in the de la Vallée Poussin style, i.e. it reproduces spherical polynomials up to a certain degree and has uniformly bounded Lp operator norm for 1 ≤ p ≤ ∞. Using certain positive quadrature rules for scattered sites due to Mhaskar, Narcowich and Ward, we discretize this operator obtaining a polynomial approximation of the target function which can be computed from scattered data and provides the same approximation degree of the best polynomial approximation. To establish the error estimates we use Marcinkiewicz–Zygmund inequalities, which we derive from our continuous approximating operator. We give concrete bounds for all constants in the Marcinkiewicz–Zygmund inequalities as well as in the error estimates. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Geographical variation of medicated parkinsonism in Finland during 1995 to 2000
Authors: Havulinna Aki S. , Tienari Pentti J. , Marttila Reijo J. , Martikainen Kirsti K. , Eriksson Johan G. , Taskinen Olli , Moltchanova Elena , Karvonen Marjatta 
Published: April 2008

AbstractWe performed a nation‐wide study on geographical variation in the incidence and prevalence of medicated parkinsonism among the Finns aged ≥30 years using Bayesian spatial conditional autoregressive models. Registry of reimbursed medication for parkinsonism and a prescription database of purchase of these drugs were used to identify the study subjects. They were located by the map coordinates of the place of residence and aggregated into regular 100 km2 grid cells. A total of 7,190 incident and 10,616 prevalent cases were found. The age‐adjusted annual incidence was 32.6/100,000 (95% HDR 31.8–33.4) during the years 1995 to 2000 and prevalence was 268/100,000 (95% HDR 263–274) in 2000. The male to female ratio was 1.45 (95% HDR 1.39–1.51) in incidence and 1.54 (95% HDR 1.47–1.61) in prevalence. There was strong evidence for geographic variation in incidence and prevalence. A zone with high incidence and prevalence was identified in the eastern and central part of Finland. There was no evidence for difference in incidence and prevalence between urban and rural areas. The marked (more than two‐fold) geographic variation can hardly be caused solely by practices of the registration and collection of data on diagnosis or by methodological issues, but rather suggests to geographic variation in protective and predisposing factors of Parkinsonism in Finland. © 2008 Movement Disorder Society
DGGE and real‐time PCR analysis of lactic acid bacteria in bacterial communities of the phyllosphere of lettuce
Authors: Zwielehner Jutta , Handschur Michael , Michaelsen Astrid , Irez Selen , Demel Michael , Denner Ewald B. M. , Haslberger Alexander G. 
Published: April 2008

AbstractFood associated indigenous microbial communities exert antagonistic effects on pathogens and may routinely deliver health relevant microorganisms to the GI tract. By using molecular, culture independent methods including PCR‐DGGE of 16S rDNA‐coding regions and real‐time PCR (RT‐PCR) as well as BIOLOG metabolic fingerprinting, microbial communities on lettuce were analyzed in samples from fields, from supermarkets and soil. Amplified 16S rRNA gene sequences (57.7%) could be assigned to species previously reported as typical for the phyllosphere including Pantoea agglomerans, Pseudomonas flavescens, Moraxella spp., and Mycobacterium spp. 71.8% of the sequences obtained represented so far undescribed taxa. Principal component analysis of BIOLOG metabolic profiles indicated a seasonal variation in the lettuce phyllosphere microbial community structure. Various lactic acid bacteria were detected including several Lactobacillus and Leuconostoc species in particular on lettuce from organic farming. By RT‐PCR lactobacilli were found with a range of abundances from 1×104 to 1×105 copies/g lettuce. Considering the importance of salad in many diets lettuce may contribute to a constant supply with LAB.
Lagrangian relaxation and enumeration for solving constrained shortest‐path problems
Authors: Carlyle W. Matthew , Royset Johannes O. , Kevin Wood R. 
Published: April 2008

AbstractThe constrained shortest‐path problem (CSPP) generalizes the standard shortest‐path problem by adding one or more path‐weight side constraints. We present a new algorithm for CSPP that Lagrangianizes those constraints, optimizes the resulting Lagrangian function, identifies a feasible solution, and then closes any optimality gap by enumerating near‐shortest paths, measured with respect to the Lagrangianized length. “Near‐shortest” implies ε‐optimal, with a varying ε that equals the current optimality gap. The algorithm exploits a variety of techniques: a new path‐enumeration method; aggregated constraints; preprocessing to eliminate edges that cannot form part of an optimal solution; “reprocessing” that reapplies preprocessing steps as improved solutions are found; and, when needed, a “phase‐I procedure” to identify a feasible solution before searching for an optimal one. The new algorithm is often an order of magnitude faster than a state‐of‐the‐art label‐setting algorithm on singly constrained randomly generated grid networks. On multiconstrained grid networks, road networks, and networks for aircraft routing the advantage varies but, overall, the new algorithm is competitive with the label‐setting algorithm. © 2008 Wiley Periodicals, Inc. NETWORKS, 2008
Numerical solution of a coupled Korteweg–de Vries equations by collocation method
Authors: Ismail M.S. 
Published: April 2008

AbstractA numerical method for solving the coupled Korteweg‐de Vries (CKdV) equation based on the collocation method with quintic B‐spline finite elements is set up to simulate the solution of CKdV equation. Invariants and error norms are studied wherever possible to determine the conservation properties of the algorithm. Simulation of single soliton, interaction of two solitons, and birth of solitons are presented. A linear stability analysis shows the scheme to be unconditionally stable. © 2008 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq, 2009
Inherited unbalanced structural chromosome abnormalities at prenatal chromosome analysis are rarely ascertained through recurrent miscarriage
Authors: Franssen M. T. M. , Korevaar J. C. , Tjoa W. M. , Leschot N. J. , Bossuyt P. M. M. , Knegt A. C. , Suykerbuyk R. F. , Hochstenbach R. , van der Veen F. , Goddijn M. 
Published: April 2008

AbstractObjectiveTo determine the mode of ascertainment of inherited unbalanced structural chromosome abnormalities detected at prenatal chromosome analysis.MethodsFrom the databases of three centres for clinical genetics in the Netherlands, all cases of inherited unbalanced structural chromosome abnormalities detected at prenatal chromosome analysis in the period 1992–2000 were selected. The mode of ascertainment was identified by examining the reason for prenatal chromosome analysis and the reason for parental chromosome analysis of the first structural chromosome abnormality detected within the family.ResultsTotally 56 cases of inherited unbalanced structural chromosome abnormalities were detected at prenatal chromosome analysis. Only one case was ascertained through two previous miscarriages (2%). The main modes of ascertainment were a previous child with an unbalanced karyotype (48%), congenital abnormalities at ultrasound examination (20%), and advanced maternal age (9%). The remaining cases had a different mode of ascertainment.ConclusionInherited unbalanced structural chromosome abnormalities detected at prenatal chromosome analysis are rarely ascertained through two or more miscarriages. Copyright © 2008 John Wiley & Sons, Ltd.
A highly uniform UV transillumination imaging system for quantitative analysis of nucleic acids and proteins
Authors: Chakravarti Bulbul , Louie Melissa , Ratanaprayul Wongrat , Raval Alpan , Gallagher Sean , Chakravarti Deb N. 
Published: April 2008

AbstractThe digital fluorescent imaging for documentation and analysis of gel electrophoretic separations of nucleic acids and proteins is widely used in quantitative biology. Most fluorescent stains used in postelectrophoretic analysis of proteins and nucleic acids have significant excitation peaks with UV light (300–365 nm), making midrange UV (UV‐B) as the excitation source of choice. However, coupling quantitative CCD imaging with UV is difficult due to lack of uniformity found in typical UV transilluminators. The apparent amount of those macromolecules depends on the position of the gel band on the imaging surface of the transilluminator. Here, we report the development and validation of a highly uniform UV transillumination system. Using a novel high density lighting system containing a single lamp formed into a high density grid, an electronic ballast, a phosphor coating, and a bandpass filter to convert 254 nm light produced to 300–340 nm, uniformity of ≤5% CV has been achieved, compared to >80% CV observed in typical UV transilluminators. This system has been used for the quantitative analysis of electrophoretically separated nucleic acids and proteins (CV≤8%) without uniformity correction by software, and continues to outperform typical transilluminators when a uniformity correction is applied.
SET‐LRP of acrylates in the presence of radical inhibitors
Authors: Lligadas Gerard , Percec Virgil 
Published: April 2008

AbstractThe Cu(0)/Me6‐TREN‐catalyzed single‐electron transfer mediated living radical polymerization (SET‐LRP) of methyl acrylate in the presence of the classic 4‐methoxyphenol free radical inhibitor was investigated. Kinetic experiments, combined with1H NMR, and MALDI‐TOF MS analysis of the resulting polyacrylates demonstrated that SET‐LRP is a robust synthetic method that does not require the purification of the monomers to remove the radical inhibitor. It is anticipated that these results will contribute to the expansion of technological and fundamental applications of SET‐LRP since it allows the synthesis of polymers with a structural perfection that previously was not accessible by any other method, starting from unpurified monomers, solvents, initiators, and ligands. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 3174–3181, 2008
D‐brane instantons in 4D supersymmetric string vacua
Authors: Akerblom N. , Blumenhagen R. , Lüst D. , Schmidt‐Sommerfeld M. 
Published: April 2008

AbstractWe review some aspects of D‐instantons in intersecting D‐brane models. In particular, we present applications of the recently proposed instanton calculus to computations of charged matter superpotential couplings and corrections to the gauge kinetic function in the low energy effective action of type IIA orientifolds. As an interesting byway, we also discuss how one‐loop corrections to the gauge kinetic function can be deduced from gauge threshold corrections in the type IIA setting.
Exact solvability of a model of nonequilibrium physics
Authors: Aneva B. 
Published: April 2008

AbstractWe discuss the exact solvability of a lattice model with a flow within the matrix product ansatz to interacting many‐body systems from the point of view of a tridiagonal boundary algebra. It reveals deep symmetry properties of the multiparticle process which allow for the exact solution in the stationary state and puts the description of the dynamics into perspective.
Five‐dimensional black holes in heterotic string theory
Authors: Cvitan M. , Dominis Prester P. , Ficnar A. , Pallua S. , Smolić I. 
Published: April 2008

AbstractWe review recent results on near‐horizon static black hole solutions and entropy in R2‐corrected N = 2 SUGRA in D = 5, focusing on actions connected to heterotic string compactified on K3 × S1. Comparison with α′‐perturbative results, results obtained by using simple Gauss‐Bonnet R2‐correction, OSV conjecture and microscopic stringy description (for small black holes) shows that situation in D = 5 is, in a sense, even more interesting than in D = 4.
Coset space dimensional reduction and classification of semi‐realistic particle physics models
Authors: Douzas G. , Grammatikopoulos T. , Madore J. , Zoupanos G. 
Published: April 2008

AbstractStarting from a Yang‐Mills‐Dirac theory defined in ten dimensions we classify the semi‐realistic particle physics models resulting from their Forgacs‐Manton dimensional reduction. The higher‐dimensional gauge group is chosen to be E8. This choice as well as the dimensionality of the space‐time is suggested by the heterotic string theory. Furthermore, we assume that the space‐time on which the theory is defined can be written in the compactified form M4 × B, with M4 the ordinary Minkowski spacetime and B = S/R a 6 ‐ dim homogeneous coset space. We constrain our investigation in those cases where the dimensional reduction leads in four dimensions to phenomenologically interesting and anomaly‐free GUTs such as E6, SO(10) and SU(5). However the four‐dimensional surviving scalars transform in the fundamental of the resulting gauge group are not suitable for the superstrong symmetry breaking of the Standard Model. The main objective of our work is the investigation to which extent the latter can be achieved by employing the Wilson flux breaking mechanism.
Emergent 4D gravity from matrix models
Authors: Steinacker H. 
Published: April 2008

AbstractRecent progress in the understanding of gravity on noncommutative spaces is discussed. A gravity theory naturally emerges from matrix models of noncommutative gauge theory. The effective metric depends on the dynamical Poisson structure, absorbing the degrees of freedom of the would‐be U(1) gauge field. The gravity action is induced upon quantization.
Renormalizability and phenomenology of θ‐expanded noncommutative gauge field theory
Authors: Trampetić J. 
Published: April 2008

AbstractIn this article we consider θ‐expanded noncommutative gauge field theory, constructed at the first order in noncommutative parameter θ, as an effective, anomaly free theory, with one‐loop renormalizable gauge sector. Related phenomenology with emphasis on the standard model forbidden decays, is discussed. Experimental possibilities of Z → γγ decay are analyzed and a firm bound to the scale of the noncommutativity parameter is set around few TeV's.