bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dual role of friction in granular flows: attenuation versus enhancement of instabilities
Authors: Mitrano Peter P. , Dahl Steven R. , Hilger Andrew M. , Ewasko Christopher J. , Hrenya Christine M. 
Published: August 2013

AbstractFlow instabilities driven by the dissipative nature of particle–particle interactions have been well documented in granular flows. The bulk of previous studies on such instabilities have considered the impact of inelastic dissipation only and shown that instabilities are enhanced with increased dissipation. The impact of frictional dissipation on the stability of grains in a homogeneous cooling system is studied in this work using molecular dynamics (MD) simulations and kinetic-theory-based predictions. Surprisingly, both MD simulations and theory indicate that high levels of friction actually attenuate instabilities relative to the frictionless case, whereas moderate levels enhance instabilities compared to frictionless systems, as expected. The mechanism responsible for this behaviour is identified as the coupling between rotational and translational motion. These results have implications not only for granular materials, but also more generally to flows with dissipative interactions between constituent particles – cohesive systems with agglomeration, multiphase flows with viscous dissipation, etc.
Sinonasal blue naevus: case report and clinicopathological review
Authors: Lim L M , Tan K B , Petersson F , Thong M 
Published: August 2013

AbstractObjective:To highlight the important clinical and histological features of sinonasal blue naevi.Methods:A case of blue naevus of the nasal cavity is described (including endoscopic and histological pictures) and the existing literature is reviewed.Results:There have been five reported cases (including the presented case). Clinically, sinonasal blue naevi are heavily pigmented lesions that are small and asymptomatic. Histopathologically, blue naevi exhibit heavily pigmented dendritic melanocytes that are never abnormal in form.Conclusion:Blue naevus should be a differential diagnosis for pigmented lesions within the sinonasal cavity, despite its rarity. It may be initially suspected by its small size and asymptomatic nature. However, histological examination is required for definitive diagnosis, looking for the key microscopic features described above.
Influence of enumeration time periods on detecting community parameters of periphytic diatoms using an artificial substratum in coastal waters
Authors: Liu Yuanyuan , Zhang Wei , Xu Henglong 
Published: August 2013

Community parameters of diatoms have been used as useful bioindicators for bioassessment of both lentic and lotic systems. The influence of enumeration time periods on detecting community parameters of periphytic diatom assemblages within different exposure times was studied using an artificial substratum in coastal waters of the Yellow Sea, northern China, during the period May–June 2010. Samples were collected at a depth of 1 m, and were examined with different enumeration time periods. Enumeration time periods represented a significant influence on detecting the community features of periphytic diatoms, although no significant changes occurred in periphytic diatom community structure between two enumeration schemes (within 24 h and 24–48 h). The delayed enumeration (within 24–48 h) may result in the similarity of the communities being reduced 10–29%, and in species numbers decreasing and in abundance increasing with exposure duration, respectively. The diversity (richness, evenness and diversity of species) indices were significantly decreased in almost all samples with >10% standard errors at some exposure times by the delayed enumeration scheme. These results suggest that the delayed enumeration may have resulted in the species richness and individual abundance of periphytic diatoms significantly decreasing and increasing, respectively, and thus significantly affected the analyses of species diversity for assessing water quality in marine ecosystems.
From the medicalisation of dementia to the politics of memory and identity in three Spanish documentary films:Bicicleta, cullera, poma, Las voces de la memoriaandBucarest: la memòria perduda
Authors: MEDINA RAQUEL 
Published: August 2013

ABSTRACTThis paper explores how the concept of Alzheimer's disease (AD) is constructed through Spanish media and documentary films and how it is represented. The article analyses three documentary films and the cultural and social contexts in and from which they emerged: Solé'sBucarest: la memòria perduda[Bucharest: Memory Lost] (2007), Bosch'sBicicleta, cullera, poma[Bicycle, Spoon, Apple] (2010) and Fabrá, Peris and Badia'sLas voces de la memoria[Memory's Voices] (2011). The three documentary films approach AD from different perspectives, creating well-structured discourses of what AD represents for contemporary Spanish society, from medicalisation of AD to issues of personhood and citizenship. These three films are studied from an interdisciplinary perspective, in an effort to strengthen the links between ageing and dementia studies and cultural studies. Examining documentary film representations of AD from these perspectives enables semiotic analyses beyond the aesthetic perspectives of film studies, and the exploration of the articulation of knowledge and power in discourses about AD in contemporary Spain.
Gender Disparities in Self-employment in Urban China's Market Transition: Income Inequality, Occupational Segregation and Mobility Processes
Authors: Zhang Qian Forrest 
Published: August 2013

AbstractThis article presents the first quantitative analysis of gender disparities in self-employment in urban China. It documents the extent of gender income inequality in self-employment. By disaggregating self-employment into three occupational classes, it reveals the gender segregation within self-employment – women were concentrated in the financially least rewarding segment – and identifies it as a main source of gender income inequality. I examine a range of determinants of participation in self-employment, including family structure, family background and career history, and how their gender-specific effects contribute to gender segregation. Although using data from a 1996 national survey, this study captures two key processes that shaped the structure of self-employment in contemporary urban China: the restructuring of the state sector and the growth of financial returns and social status in the private sector, both of which contributed to the formation of gender segregation in self-employment.
Restaging the Revolution in Contemporary China: Memory of Politics and Politics of Memory
Authors: Cai Rong 
Published: August 2013

AbstractThis article focuses on the adaptation of the Red Classics – a collection of literary and cinematic works depicting the Communist armed struggle produced in the PRC between 1949 and 1966 – for contemporary Chinese television. Using the controversy over the remake ofTracks in the Snowy Forest(Linhai xueyuan林海雪原) as a case study, it explores the complexity of restaging the Communist revolution in the post-Mao reform era. Competition in the media industry compels TV producers to re-package Communist history for fragmented contemporary audiences – those who are familiar with the original Red Classics as well as those who grew up in the reform era and who are far removed from the revolutionary legacy. Adaptation of the Red Classics is a sensitive issue. By focusing on the sexual desires and individual interests muted in the original Red Classics in order to cater for the tastes of younger viewers, the remakes offer alternative readings of history and have incurred government censorship. Opposition to the adaptations has also come from a distinct mnemonic community, the Red memory group, whose members came of age in either the 1960s or during the Cultural Revolution and who absorbed the Red Classics in their formative years. The interplay of state politics, collective memory and commercial imperatives ultimately makes the repackaging of the revolution for contemporary mass entertainment a multifaceted and highly contentious issue.
IMF Working Paper Monetary and Capital Markets Department Possible Unintended Consequences of Basel III and Solvency II
Authors: Al-Darwish Ahmed , Hafeman Michael , Impavido Gregorio , Kemp Malcolm , O'Malley Padraic 
Published: August 2013

AbstractThis Working Paper should not be reported as representing the views of the IMF.The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate.In today's financial system, complex financial institutions are connected through an opaque network of financial exposures. These connections contribute to financial deepening and greater savings allocation efficiency, but are also unstable channels of contagion. Basel III and Solvency II should improve the stability of these connections, but could have unintended consequences for cost of capital, funding patterns, interconnectedness, and risk migration.
Scanning Electron Microscopy Studies of Neoformations on Stony Materials of Modern Building Works
Authors: Alves Carlos 
Published: August 2013

AbstractThe built environment is subjected to several pollutants under variable environmental conditions defined by diverse geochemical systems. These geochemical systems promote the occurrence of neoformations that can have a detrimental effect on surfaces of the building materials. Hence, the study of neoformations helps in the understanding of weathering processes that affect built structures. In the present paper we present a scanning electron microscopy study of macroscopic manifestations of neoformations detected during an extensive visual survey of several modern architectural works in urban areas of northern and central Portugal. The studies performed suggest that cementitious materials play an important role as a source of pollutants for the most common neoformations such as carbonate rich stains and coatings, as well as salt efflorescences of alkaline sulphates and carbonates. There are also indications of contributions from organic sources for alkaline nitrates and atmospheric pollution for gypsum-rich black crusts. Other less common neoformations include phosphate aggregates and silica stains that represent interesting indicators of the geochemical systems in built environments. In the case of carbonate-rich coatings, indications of recurrence related to the circulation of carbonate forming solutions relevant to the maintenance of built surfaces were detected.
REMARKS ON EISENSTEIN
Authors: BILU YURI , BORICHEV ALEXANDER 
Published: August 2013

AbstractWe obtain a fully explicit quantitative version of the Eisenstein theorem on algebraic power series which is more suitable for certain applications than the existing version due to Dwork, Robba, Schmidt and van der Poorten. We also treat ramified series and Laurent series, and we demonstrate some applications; for instance, we estimate the discriminant of the number field generated by the coefficients.
Postoperative radiotherapy for advanced head and neck cancer in patients with cardiac pacemakers
Authors: Ampil Federico L. , Nathan Cherie-Ann , Ghali Ghali , Kim David 
Published: August 2013

AbstractThe clinical situation of coexisting significant cardiac arrhythmias complicating head and neck cancer (HNC) is uncommon, accounting for <11% of comorbid illnesses present in this particular cohort of individuals. Little is documented about the outcomes of these people with cardiac pacemakers (CP) when surgery combined with postoperative radiotherapy is rendered. The authors report two cases wherein full-course postoperative irradiation was administered without any patient mishap. Appropriately indicated adjuvant radiotherapy for locally advanced HNC can be conducted safely and effectively in patients with CPs. Implementation of essential precautionary measures is encouraged to avoid any serious, unwanted cardiac events.
Integrating metagenomic and amplicon databases to resolve the phylogenetic and ecological diversity of the Chlamydiae
Authors: Lagkouvardos Ilias , Weinmaier Thomas , Lauro Federico M , Cavicchioli Ricardo , Rattei Thomas , Horn Matthias 
Published: August 2013

Abstract
In the era of metagenomics and amplicon sequencing, comprehensive analyses of available sequence data remain a challenge. Here we describe an approach exploiting metagenomic and amplicon data sets from public databases to elucidate phylogenetic diversity of defined microbial taxa. We investigated the phylum Chlamydiae whose known members are obligate intracellular bacteria that represent important pathogens of humans and animals, as well as symbionts of protists. Despite their medical relevance, our knowledge about chlamydial diversity is still scarce. Most of the nine known families are represented by only a few isolates, while previous clone library-based surveys suggested the existence of yet uncharacterized members of this phylum. Here we identified more than 22 000 high quality, non-redundant chlamydial 16S rRNA gene sequences in diverse databases, as well as 1900 putative chlamydial protein-encoding genes. Even when applying the most conservative approach, clustering of chlamydial 16S rRNA gene sequences into operational taxonomic units revealed an unexpectedly high species, genus and family-level diversity within the Chlamydiae, including 181 putative families. These in silico findings were verified experimentally in one Antarctic sample, which contained a high diversity of novel Chlamydiae. In our analysis, the Rhabdochlamydiaceae, whose known members infect arthropods, represents the most diverse and species-rich chlamydial family, followed by the protist-associated Parachlamydiaceae, and a putative new family (PCF8) with unknown host specificity. Available information on the origin of metagenomic samples indicated that marine environments contain the majority of the newly discovered chlamydial lineages, highlighting this environment as an important chlamydial reservoir.
Rapid prototyping of carbon-based chemiresistive gas sensors on paper
Authors: Mirica Katherine A. , Azzarelli Joseph M. , Weis Jonathan G. , Schnorr Jan M. , Swager Timothy M. 
Published: August 2013

Significance
This paper describes a rapid, solvent-free, two-step procedure for the fabrication of selective gas and vapor sensors from carbon nanotubes and graphite on the surface of paper that overcomes challenges associated with solvent-assisted chemical functionalization and integration of these materials into devices. The first step generates solid composites from carbon nanotubes (or graphite) and small molecules (chosen to interact with specific types of gases and vapors) by mechanical mixing and subsequent compression into a form similar to a conventional pencil “lead”. The second step uses mechanical abrasion (“drawing”) of these solid composites on the surface of paper to generate functional devices. The use of diverse composites yields sensing arrays capable of detecting and differentiating gases and vapors and part-per-million concentrations.
Parmenides - Platon - Hermes Trismegistus
Authors: Jeck Udo Reinhold 
Published: August 2013

Abstract
Heidegger's many observations about the philosophical thought of the Middle Ages, while often controversial, are deserving of attention. One of the lesser-known of these observations reflects his interest in hermetic philosophy, as found in his posthumously published treatise Die Negativität (1938/39), a critical engagement with Hegel with regard to the nature and ontological status of negation. Therein, Heidegger associates the acpoupa of Parmenides with the sphaera intelligibi-lis of Hermes Trismegistus and the absolute Idee of Hegel and therewith Plato's doctrine of the ideas in its absolute-idealist modification. Heidegger weaves these various strands of the tradition into a web of manifold significations representative of different yet related philosophical intentions.
Science Communication in a Digital Age: Social Media and the American Fisheries Society
Authors: Claussen Julie E , Cooney Patrick B , Defilippi Julie M , Fox Sarah Gilbert , Glaser Sarah Michele , Hawkes Elden , Hutt Clifford , Jones Marissa H , Kemp Iris M , Lerner Aaron , Midway Stephen R , Nesbit Shivonne , Osborne-Gowey Jeremiah , Roberts Ryan , Steward Cleve 
Published: August 2013

ABSTRACT
Social media platforms are effective tools used to help communicate and increase involvement in cultural, political, and scientific circles. In 2012, an ad hoc committee was established to explore online fisheries science communication and how social media platforms can be utilized by the American Fisheries Society (AFS). A survey was disseminated to all AFS units (chapters, sections, divisions) and student subunits to better understand the current use of social media within the AFS. A relatively high response rate (82%) provided some confidence in the survey results—namely, that nearly 69% or more of units and subunits used social media. Facebook was the dominant platform used (59%; all others &lt; 15%) and almost exclusively (97%) for the purpose of communication. Education, outreach, and member recruitment were other reasons for social media use. Finally, whether units currently use social media or not at all, it was recommended that AFS-led workshops and assistance would increase the usefulness of social media.
Reduced Myxobolus cerebralis Actinospore Production in a Colorado Reservoir May Be Linked to Changes in Tubifex tubifex Population Structure
Authors: Nehring R. Barry , Hancock B. , Catanese M. , Stinson M. E. T. , Winkelman D. , Wood J. , Epp J. 
Published: August 2013

Abstract
Elucidating the dynamics of a parasitic infection requiring two hosts in a natural ecosystem can be a daunting task. Myxobolus cerebralis (Mc), the myxozoan parasite that causes whirling disease in some salmonids, was detected in the Colorado River upstream of Windy Gap Reservoir (WGR) in 1988. Subsequently, whirling disease was implicated in the decline of wild Rainbow Trout Oncorhynchus mykiss in the river when WGR was identified as a point source of Mc triactinomyxons (TAMs). Between 1997 and 2004, numerous investigations began to elucidate the etiology of Mc in WGR. During this period, Mc TAM production in WGR declined more than 90%. Explanations for the decline have included differences in stream discharge between years, changes in the thermal regime of the lake, severe drought, changes in the fish population structure in WGR, and reductions in the prevalence and severity of Mc infection in salmonids in the Colorado and Fraser rivers upstream of WGR. All of these have been discredited as explanations for the reduced TAM production. In 2005, a new study was conducted to replicate the studies completed in 1998. In this paper, the results of a new real-time polymerase chain reaction assay utilized to quantify the mitochondrial 16S rDNA specific to each of four lineages of Tubifex tubifex in pooled samples of 50 oligochaetes are presented. These results suggest that compared with 1998, the densities of aquatic oligochaetes and T. tubifex have increased, TAM production has been greatly reduced, and the decline is congruent with the dominance of lineages I, V, and VI of T. tubifex—three lineages that are refractory or highly resistant to Mc infection—in the oligochaete population. While it is possible that the resistant lineages function as biofilters that deactivate Mc myxospores, the reason for the decline in TAM production in WGR remains an enigma.
Received February 15, 2012; accepted March 17, 2013
SubNet: a Java application for subnetwork extraction
Authors: Zhang Quanwei , Zhang Zhengdong D. 
Published: August 2013

Abstract
Summary: The extraction of targeted subnetworks is a powerful way to identify functional modules and pathways within complex networks. Here, we present SubNet, a Java-based stand-alone program for extracting subnetworks, given a basal network and a set of selected nodes. Designed with a graphical user-friendly interface, SubNet combines four different extraction methods, which offer the possibility to interrogate a biological network according to the question investigated. Of note, we developed a method based on the highly successful Google PageRank algorithm to extract the subnetwork using the node centrality metric, to which possible node weights of the selected genes can be incorporated.
Availability: http://www.zdzlab.org/1/subnet.html
Contact: zhengdong.zhang@einstein.yu.edu
Supplementary information: Supplementary data are available at Bioinformatics online.
High-accuracy prediction of transmembrane inter-helix contacts and application to GPCR 3D structure modeling
Authors: Yang Jing , Jang Richard , Zhang Yang , Shen Hong-Bin 
Published: August 2013

Abstract
Motivation: Residue–residue contacts across the transmembrane helices dictate the three-dimensional topology of alpha-helical membrane proteins. However, contact determination through experiments is difficult because most transmembrane proteins are hard to crystallize.
Results: We present a novel method (MemBrain) to derive transmembrane inter-helix contacts from amino acid sequences by combining correlated mutations and multiple machine learning classifiers. Tested on 60 non-redundant polytopic proteins using a strict leave-one-out cross-validation protocol, MemBrain achieves an average accuracy of 62%, which is 12.5% higher than the current best method from the literature. When applied to 13 recently solved G protein-coupled receptors, the MemBrain contact predictions helped increase the TM-score of the I-TASSER models by 37% in the transmembrane region. The number of foldable cases (TM-score &gt;0.5) increased by 100%, where all G protein-coupled receptor templates and homologous templates with sequence identity &gt;30% were excluded. These results demonstrate significant progress in contact prediction and a potential for contact-driven structure modeling of transmembrane proteins.
Availability: www.csbio.sjtu.edu.cn/bioinf/MemBrain/
Contact: hbshen@sjtu.edu.cn or zhng@umich.edu
Supplementary information: Supplementary data are available at Bioinformatics online.