bluuebunny/crossref_metadata_2025_split huggingface dataset:
Any Baumslag–Solitar action on surfaces with a pseudo-Anosov element has a finite orbit
Authors: GUELMAN NANCY , LIOUSSE ISABELLE 
Published: March 2018

We consider homeomorphisms$f,h$generating a faithful$\mathit{BS}(1,n)$-action on a closed surface$S$, that is,$hfh^{-1}=f^{n}$for some$n\geq 2$. According to Guelman and Liousse [Actions of Baumslag–Solitar groups on surfaces.Discrete Contin. Dyn. Syst. A 5(2013), 1945–1964], after replacing$f$by a suitable iterate if necessary, we can assume that there exists a minimal set$\unicode[STIX]{x1D6EC}$of the action, included in$\text{Fix}(f)$. Here, we suppose that$f$and$h$are$C^{1}$in a neighborhood of$\unicode[STIX]{x1D6EC}$and any point$x\in \unicode[STIX]{x1D6EC}$admits an$h$-unstable manifold$W^{u}(x)$. Using Bonatti’s techniques, we prove that either there exists an integer$N$such that$W^{u}(x)$is included in$\text{Fix}(f^{N})$or there is a lower bound for the norm of the differential of$h$depending only on$n$and the Riemannian metric on $S$. Combining the last statement with a result of Alonso, Guelman and Xavier [Actions of solvable Baumslag–Solitar groups on surfaces with (pseudo)-Anosov elements.Discrete Contin. Dyn. Syst.to appear], we show that any faithful action of$\mathit{BS}(1,n)$on$S$with$h$a pseudo-Anosov homeomorphism has a finite orbit containing singularities of $h$; moreover, if$f$is isotopic to the identity, it is entirely contained in the singular set of $h$. As a consequence, there is no faithful$C^{1}$-action of$\mathit{BS}(1,n)$on the torus with$h$Anosov.
Unintended Consequences of Pretransplant Vancomycin-Resistant Enterococcus Screening on Antimicrobial Stewardship Among Allogeneic Hematopoietic Cell Transplant Recipients
Authors: Stohs Erica J. , MacAllister Trenton , Pergam Steven A. , Krantz Elizabeth M. , Jain Rupali , Sweet Ania , Liu Catherine 
Published: March 2018

We examined vancomycin-resistant enterococci (VRE)-directed antimicrobial use and VRE bacteremia in a cohort of allogeneic hematopoietic cell transplantation patients from a center where VRE screening is standard prior to transplant. In this cohort, VRE bacteremia (VREB) was infrequent. In patients without VREB, colonized patients received VRE therapy more often than noncolonized patients.Infect Control Hosp Epidemiol2018;39:730–733
Information technology capability, knowledge management capability, and organizational agility: The role of environmental factors
Authors: Panda Sukanya , Rath Santanu Kumar 
Published: March 2018

AbstractThis study precisely investigates the relationship of information technology (IT) and knowledge management (KM) capabilities with organizational agility along with the moderating influence of external environmental actors on this linkage. A matched-pair field survey was conducted and pretested structured questionnaires were administered to accumulate primary responses from 300 business and IT personnel working in various Indian financial groups. The research findings encompass first, IT and KM capabilities are enablers of organizational agility, while KM capability is more effective on agility. Second, a more diverse and less hostile environment is required for IT and KM capabilities to have more positive influence on agility, yet the moderating effects of environmental factors are found to be more on IT–agility linkage than on KM–agility relationship. These inferences provide several implications for the business and IT executives to concentrate on leveraging both IT and KM capabilities for generating augmented organizational agility.
Stein's method for negatively associated random variables with applications to second-order stationary random fields
Authors: Wiroonsri Nathakhun 
Published: March 2018

Abstract
Let ξ = (ξ1, . . ., ξm) be a negatively associated mean-zero random vector with components that obey the bound |ξi| ≤ B, i = 1, . . ., m, and whose sum W = ∑i=1mξi has variance 1. The bound d1(ℒ(W), ℒ(Z)) ≤ 5B - 5.2∑i≠ jσij is obtained, where Z has the standard normal distribution and d1(∙, ∙) is the L1 metric. The result is extended to the multidimensional case with the L1 metric replaced by a smooth functions metric. Applications to second-order stationary random fields with exponential decreasing covariance are also presented.
On stochastic comparisons ofk-out-of-nsystems with Weibull components
Authors: Balakrishnan Narayanaswamy , Barmalzan Ghobad , Haidari Abedin 
Published: March 2018

AbstractIn this paper we prove that a parallel system consisting of Weibull components with different scale parameters ages faster than a parallel system comprising Weibull components with equal scale parameters in the convex transform order when the lifetimes of components of both systems have different shape parameters satisfying some restriction. Moreover, while comparing these two systems, we show that the dispersive and the usual stochastic orders, and the right-spread order and the increasing convex order are equivalent. Further, some of the known results in the literature concerning comparisons ofk-out-of-nsystems in the exponential model are extended to the Weibull model. We also provide solutions to two open problems mentioned by Balakrishnan and Zhao (2013) and Zhaoet al.(2016).
Development and assessment of an improved recombinant multiepitope antigen-based immunoassay to diagnose chronic Chagas disease
Authors: Peverengo Luz María , Garcia Valeria , Rodeles Luz María , Mendicino Diego , Vicco Miguel , Lagier Claudia , Gonzalez Verónica , Gugliotta Luis , Marcipar Iván 
Published: March 2018

AbstractThe use of chimeric molecules fusing several antigenic determinants is a promising strategy for the development of low-cost, standardized and reliable kits to determine specific antibodies. In this study, we designed and assessed a novel recombinant chimera that complements the performance of our previously developed chimera, CP1 [FRA and SAPA antigens (Ags)], to diagnose chronic Chagas disease. The new chimeric protein, named CP3, is composed of MAP, TcD and TSSAII/V/VI antigenic determinants. We compared the performance of both chimeric Ags using a panel of 67 Trypanosoma cruzi-reactive sera and 67 non-reactive ones. The sensitivity of CP3 vs CP1 was 100 and 90.2%, and specificity was 92.5 and 100%, respectively. The mixture of CP1 + CP3 achieved 100% of sensitivity and specificity. More importantly, an additional subset of 17 sera from patients with discordant results of conventional serological methods was analysed; the CP1 + CP3 mixture allowed us to accurately classify 14 of them with respect to IIF, the usual technique used in most of the reference centres. These results show an improved performance of the CP1 + CP3 mixture in comparison with enzyme-linked immunosorbent assay and indirect haemagglutination commercial assays.
The feminine endings*-ayand*-āyin Semitic and Berber
Authors: van Putten Marijn 
Published: March 2018

AbstractThis paper examines the evidence for the marginal feminine endings*-ay-and*-āy-in Proto-Semitic, and the feminine endings*-eand*-ain Proto-Berber. Their similar formation (*CV̆CC-ay/āy), semantics (verbal abstracts, underived concrete feminine nouns) and plural morphology (replacement of the feminine suffix by a plural suffix with -w-) suggest that this feminine formation should be reconstructed to a shared ancestor which may be called Proto-Berbero-Semitic.
Water-promoted C-S bond formation reactions
Authors: Xie Peizhong , Wang Jinyu , Liu Yanan , Fan Jing , Wo Xiangyang , Fu Weishan , Sun Zuolian , Loh Teck-Peng 
Published: March 2018

AbstractAllylic sulfones, owning to their widespread distributions in biologically active molecules, received increasing attention in the past few years. However, the synthetic method under mild conditions is still a challenging task. In this paper, we report a sulfinic acids ligation with allylic alcohols via metal-free dehydrative cross-coupling. Both aliphatic and aromatic sulfinic acids react with various allylic alcohols to deliver the desired allylic sulfones in high yields with excellent selectivity. This carbon–sulfur bond formation reaction is highly efficient and practical since it works under metal-free, neutral, aqueous media and at room temperature in which the products even can be obtained by simple filtration without the need for organic extraction or column chromatography. Water is found to be essential for the success of this carbon–sulfur bond formation reaction. DFT calculations imply that water acts as promoter in this transformation via intermolecular hydrogen bonds.
Cut Based Method for Comparing Complex Networks
Authors: Liu Qun , Dong Zhishan , Wang En 
Published: March 2018

AbstractRevealing the underlying similarity of various complex networks has become both a popular and interdisciplinary topic, with a plethora of relevant application domains. The essence of the similarity here is that network features of the same network type are highly similar, while the features of different kinds of networks present low similarity. In this paper, we introduce and explore a new method for comparing various complex networks based on the cut distance. We show correspondence between the cut distance and the similarity of two networks. This correspondence allows us to consider a broad range of complex networks and explicitly compare various networks with high accuracy. Various machine learning technologies such as genetic algorithms, nearest neighbor classification, and model selection are employed during the comparison process. Our cut method is shown to be suited for comparisons of undirected networks and directed networks, as well as weighted networks. In the model selection process, the results demonstrate that our approach outperforms other state-of-the-art methods with respect to accuracy.
Use of SU8 as a stable and biocompatible adhesion layer for gold bioelectrodes
Authors: Matarèse Bruno F. E. , Feyen Paul L. C. , Falco Aniello , Benfenati Fabio , Lugli Paolo , deMello John C. 
Published: March 2018

AbstractGold is the most widely used electrode material for bioelectronic applications due to its high electrical conductivity, good chemical stability and proven biocompatibility. However, it adheres only weakly to widely used substrate materials such as glass and silicon oxide, typically requiring the use of a thin layer of chromium between the substrate and the metal to achieve adequate adhesion. Unfortunately, this approach can reduce biocompatibility relative to pure gold films due to the risk of the underlying layer of chromium becoming exposed. Here we report on an alternative adhesion layer for gold and other metals formed from a thin layer of the negative-tone photoresist SU-8, which we find to be significantly less cytotoxic than chromium, being broadly comparable to bare glass in terms of its biocompatibility. Various treatment protocols for SU-8 were investigated, with a view to attaining high transparency and good mechanical and biochemical stability. Thermal annealing to induce partial cross-linking of the SU-8 film prior to gold deposition, with further annealing after deposition to complete cross-linking, was found to yield the best electrode properties. The optimized glass/SU8-Au electrodes were highly transparent, resilient to delamination, stable in biological culture medium, and exhibited similar biocompatibility to glass.
Cohesively enhanced electrical conductivity and thermal stability of silver nanowire networks by nickel ion bridge joining
Authors: Wang Shang , Tian Yanhong , Hang Chunjin , Wang Chenxi 
Published: March 2018

AbstractA facile method for producing high-performance nickel enhanced silver nanowire (Ag NW) transparent electrodes on a flexible substrate is reported. The modified electroplating method called enhanced nickel ion bridge joining of Ag NWs, which provides a new route for improving the loose junctions in bare Ag NW networks. The sheet resistance of Ag NW electrode drops from over 2000 Ω sq−1 to 9.4 Ω sq−1 with excellent thermal uniformity after the electroplating process within 10 s. Nickel enhanced Ag NW transparent films are applied on flexible heaters with good thermal stability (165 °C for 2 h) and mechanical flexibility (3500 cycles under 2.5 mm bending radius) after mechanical bending process. Moreover, the mechanism of nickel growth is also confirmed that the nickel electroplating of the Ag NWs obeyed Faraday’s Laws.
Diatom frustules protect DNA from ultraviolet light
Authors: Aguirre Luis Ever , Ouyang Liangqi , Elfwing Anders , Hedblom Mikael , Wulff Angela , Inganäs Olle 
Published: March 2018

AbstractThe evolutionary causes for generation of nano and microstructured silica by photosynthetic algae are not yet deciphered. Diatoms are single photosynthetic algal cells populating the oceans and waters around the globe. They generate a considerable fraction (20–30%) of all oxygen from photosynthesis, and 45% of total primary production of organic material in the sea. There are more than 100,000 species of diatoms, classified by the shape of the glass cage in which they live, and which they build during algal growth. These glass structures have accumulated for the last 100 million of years, and left rich deposits of nano/microstructured silicon oxide in the form of diatomaceous earth around the globe. Here we show that reflection of ultraviolet light by nanostructured silica can protect the deoxyribonucleic acid (DNA) in the algal cells, and that this may be an evolutionary cause for the formation of glass cages.
Confirmation of a metastasis-specific microRNA signature in primary colon cancer
Authors: Coebergh van den Braak Robert R. J , Sieuwerts Anieta M. , Lalmahomed Zarina S. , Smid Marcel , Wilting Saskia M. , Bril Sandra I. , Xiang Shanshan , van der Vlugt-Daane Michelle , de Weerd Vanja , van Galen Anne , Biermann Katharina , van Krieken J. Han J. M , Kloosterman Wigard P. , Foekens John A. ,   MATCH study group*, Coene Peter-Paul L. O. , Dekker Jan Willem T. , Zimmerman David D. E. , Tetteroo Geert W. M. , Vles Wouter J. , Vrijland Wietske W. , Martens John W. M. , IJzermans Jan N. M. 
Published: March 2018

AbstractThe identification of patients with high-risk stage II colon cancer who may benefit from adjuvant therapy may allow the clinical approach to be tailored for these patients based on an understanding of tumour biology. MicroRNAs have been proposed as markers of the prognosis or treatment response in colorectal cancer. Recently, a 2-microRNA signature (let-7i and miR-10b) was proposed to identify colorectal cancer patients at risk of developing distant metastasis. We assessed the prognostic value of this signature and additional candidate microRNAs in an independent, clinically well-defined, prospectively collected cohort of primary colon cancer patients including stage I-II colon cancer without and stage III colon cancer with adjuvant treatment. The 2-microRNA signature specifically predicted hepatic recurrence in the stage I-II group, but not the overall ability to develop distant metastasis. The addition of miR-30b to the 2-microRNA signature allowed the prediction of both distant metastasis and hepatic recurrence in patients with stage I-II colon cancer who did not receive adjuvant chemotherapy. Available gene expression data allowed us to associate miR-30b expression with axon guidance and let-7i expression with cell adhesion, migration, and motility.
Macular assessment of preoperative optical coherence tomography in ageing Chinese undergoing routine cataract surgery
Authors: Huang Xiaoli , Zhang Zhengwei , Wang Jie , Meng Xiaomei , Chen Tiantian , Wu Zhifeng 
Published: March 2018

AbstractThis retrospective consecutive case series aimed to evaluate spectral-domain optical coherence tomography (SD-OCT) for occult macular disease recognition preoperatively in patients scheduled for routine cataract surgery. All patients scheduled for cataract surgery underwent macular SD-OCT. Scans were reviewed for retinal, retinal pigment epithelium and vitreomacular interface abnormalities. For the subgroup analysis, the following information was collected: age; sex; and diabetes, hypertension, myopia, glaucoma, post intra-ocular surgery, endophotocoagulation, retinal vasculopathy and uveitis statuses. One-thousand-one-hundred-seventy-six consecutive scans were acquired from 1,176 patients. Macular pathology was found in 294 eyes. The most common macular disorders were an epiretinal membrane (n = 130), myopia atrophy (n = 61) and a dome-shaped macular with pathologic myopia (n = 32). One-hundred-thirty eyes (11.05%) presented macular epiretinal membranes not detected by dilated fundus examination, accounting for 44.22% of the abnormalities in diseased eyes and was higher than in previous Chinese studies. Some had multiple macular disorders. The most common ocular history was myopia, including high myopia. The pooled prevalence rate of macular diseases detected by OCT was 0.24 (95% CI 0.14–0.34) using meta-analysis. SD-OCT should be performed for routine cataract surgery patients to evaluate visual outcomes, especially in myopic patients and those considering advanced-technology intraocular lenses.
Diversity of innate immune cell subsets across spatial and temporal scales in an EAE mouse model
Authors: Caravagna Céline , Jaouën Alexandre , Desplat-Jégo Sophie , Fenrich Keith K. , Bergot Elise , Luche Hervé , Grenot Pierre , Rougon Geneviève , Malissen Marie , Debarbieux Franck 
Published: March 2018

AbstractIn both multiple sclerosis and its model experimental autoimmune encephalomyelitis (EAE), the extent of resident microglia activation and infiltration of monocyte-derived cells to the CNS is positively correlated to tissue damage. To address the phenotype characterization of different cell subsets, their spatio-temporal distributions and contributions to disease development we induced EAE in Thy1-CFP//LysM-EGFP//CD11c-EYFP reporter mice. We combined high content flow cytometry, immunofluorescence and two-photon imaging in live mice and identified a stepwise program of inflammatory cells accumulation. First on day 10 after induction, EGFP+ neutrophils and monocytes invade the spinal cord parenchyma through the meninges rather than by extravasion. This event occurs just before axonal losses in the white matter. Once in the parenchyma, monocytes mature into EGFP+/EYFP+ monocyte-derived dendritic cells (moDCs) whose density is maximal on day 17 when the axonal degradation and clinical signs stabilize. Meanwhile, microglia is progressively activated in the grey matter and subsequently recruited to plaques to phagocyte axon debris. LysM-EGFP//CD11c-EYFP mice appear as a powerful tool to differentiate moDCs from macrophages and to study the dynamics of immune cell maturation and phenotypic evolution in EAE.
The effect of nitrogen lone-pair interaction on the conduction in a single-molecule junction with amine-Au bonding
Authors: Sugita Yoshihiro , Taninaka Atsushi , Yoshida Shoji , Takeuchi Osamu , Shigekawa Hidemi 
Published: March 2018

AbstractWe have applied our previously developed three-dimensional dynamic probe method to analyze the conductance in a Au-/1,4-benzenediamine (BDA)/Au single molecule junction. This structure is a typically used example to demonstrate the high performance of the break junction (BJ) method for measuring conductance with small variations, however, details of the interaction of the nitrogen (N) lone-pair in the amine group with a Au electrode, which is considered to have a fundamental role in determining the conductance of the single molecule junction with the amine, have not yet been clarified and still remain an important issue to be resolved. In this study, we have succeeded, for the first time, in observing the site-dependent change in conductance of this system while the molecular conformation was accurately controlled, and the results were well reproduced by a simulation taking account of the effect of the N lone-pair in an amine bonding with a Au electrode.
Mutations in the CDS and promoter of BjuA07.CLV1 cause a multilocular trait in Brassica juncea
Authors: Xiao Lu , Li Xin , Liu Fei , Zhao Zhi , Xu Liang , Chen Cuiping , Wang Yanhua , Shang Guoxia , Du Dezhi 
Published: March 2018

AbstractMultilocular trait has recently attracted considerable attention for its potential to increase yield. Our previous studies indicated that two genes (Bjln1 and Bjln2) are responsible for multilocular siliques in Brassica juncea and the Bjln1 gene has been delimited to a 208-kb region. In present study, the Bjln1 gene was successfully isolated using the map-based cloning method. Complementation test indicated that the BjuA07.CLV1 (equivalent to BjLn1) could rescue the multilocular phenotype and generate bilocular siliques. Two amino acids changes at positions 28 and 63 in BjuA07.clv1 as well as a 702-bp deletion in its promoter have been proved to affect the carpel numbers. Microscopic analyses suggested that BjuA07.CLV1 is involved in the maintenance of shoot and floral meristem size. The expression level of BjuA07.clv1 was significantly reduced in the SAM. Furthermore, WUS, CLV2, CLV3, RPK2 and POL, key genes in the CLV/WUS signal pathway, showed lower expression level in the multilocular plants. These data suggest that the mutations in the CDS and promoter of BjuA07.clv1 reduced its function and expression level, which disturbed CLV/WUS signal pathway, thereby leading to the enlargement of the shoot and floral meristem and resulting in the multilocular siliques.
Pitfalls of statistics-limited X-ray polarization analysis
Authors: Mikhalev V. 
Published: March 2018

Context. One of the difficulties with performing polarization analysis is that the mean polarization fraction of sub-divided data sets is larger than the polarization fraction for the integrated measurement. The resulting bias is one of the properties of the generating distribution discussed in this work. The limitations of Gaussian approximations in standard analysis based on Stokes parameters for estimating polarization parameters and their uncertainties are explored by comparing with a Bayesian analysis. The effect of uncertainty on the modulation factor is also shown, since it can have a large impact on the performance of gamma-ray burst polarimeters. Results are related to the minimum detectable polarization (MDP), a common figure of merit, making them easily applicable to any X-ray polarimeter.
Aims. The aim of this work is to quantify the systematic errors induced on polarization parameters and their uncertainties when using Gaussian approximations and to show when such effects are non-negligible.
Methods. The probability density function is used to deduce the properties of reconstructed polarization parameters. The reconstructed polarization parameters are used as sufficient statistics for finding a simple form of the likelihood. Bayes theorem is used to derive the posterior and to include nuisance parameters.
Results. The systematic errors originating from Gaussian approximations as a function of instrument sensitivity are quantified here. Different signal-to-background scenarios are considered making the analysis relevant for a large variety of observations. Additionally, the change of posterior shape and instrument performance MDP due to uncertainties on the polarimeteric response of the instrument is shown.