bluuebunny/crossref_metadata_2025_split huggingface dataset:
Monte Carlo simulation of nonlinear gravity driven Poiseuille–Couette flow in a dilute gas
Authors: Baliti Jamal , Hssikou Mohamed , Alaoui Mohammed 
Published: July 2018

AbstractThrough the direct simulation Monte Carlo, the Boltzmann equation is solved numerically for dilute hard spheres gas between two infinite parallel plates in relative motion and at the same time the particles feel the action of a uniform body force along the same direction as the moving plate. The study is conducted on the effect of the external force on the nonlinear properties of the Poiseuille–Couette flow. We have been interested in the bulk properties, to inhibit the influence of finite-size effects, while ignoring linear effects like Knudsen boundary layer to investigate the generalised transport coefficients depending on the shear rate nonlinearly: the two nonlinear thermal conductivity function of normal heat flux and parallel one, the viscosity function, the tangential friction function, and the thermal curvature. The results indicate that the effect of the external force is significant on the nonlinear functions, where the viscosity function and normal thermal conductivity are increasing functions of this field.
Two novel Zn(II)-Li(I)-based and In(III)-based coordination polymers: crystal structures and anti-lung cancer activity
Authors: Meng Xian-Qing , Dong Xiao-Bin , Wang Hui , Tian Zheng-Yun 
Published: July 2018

Abstract
In this study, two new metal-organic frameworks, namely, {(H2NMe2)[Zn3LiO(BTA)2](DMF)3}n (1, H3BTA=3,3′,3″-[1,3,5-benzenetriyltris(carbonylimino)] trisbenzoic acid) and {(Me2NH2)2[In2(TTA)2(FBA)2](DMF)3}n (2, H3TTA=4,4′-(((5-((4-(hydroxy-l2-methoxy)phenoxy) methyl)-2,4,6-trimethyl-1,3-phenylene)bis(methylene))bis(oxy))dibenzoic acid, HFBA=2-fluorobenzoic acid), were obtained via a one-pot solvothermal reaction of metal salts and organic connectors. The structures of the title two metal-organic coordination compounds were structurally probed via X-ray single crystal diffraction technique. In connection to their structures, the MTT assay was used to access the in vitro antitumor activities for compounds 1 and 2 against the human lung cancer cells (MSTO-211H, NCI-H1299 and NCI-H292).
Crystal structure of 2-amino-5-oxo-4-(4-chloro-phenyl)-4,5,6,7-tetrahydro-cyclopenta[b]pyran-3-carbonitrile, C15H11ClN2O2
Authors: Li Da , Zhou Yan , Zhong Wei , Peng Ling 
Published: July 2018

Abstract
C15H11ClN2O2, monoclinic, C2/c (no. 15), a = 12.955(7) Å, b = 10.425(7) Å, c = 20.149(13) Å, β = 102.415(14)°, V = 2658(3) Å3, Z = 8, R
gt(F) = 0.0361, wR
ref(F
2) = 0.0917, T = 296(2) K.
Crystal structure of triaqua-(pyridine-2,6-dicarboxylato-κ3
O,N,O′)cobalt(II) – 6-phenyl-1,3,5-triazine-2,4-diamine (1/1), C16H18CoN6O7
Authors: Ren-Shu Wang , Jing Feng 
Published: July 2018

Abstract
C16H18CoN6O7, monoclinic, P21/c (no. 14), a = 12.6820(11) Å, b = 7.9486(6) Å, c = 19.6429(15) Å, V = 1928.9(3) Å3, Z = 4, R
gt(F) = 0.0429, wR
ref(F
2) = 0.1077, T = 296(2) K.
Crystal structure of 2-amino-4-(4-fluorophenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2c] chromene, C19H11FN2O3
Authors: He Lian-Man , Gao Chuan-Yu 
Published: July 2018

Abstract
C19H11FN2O3, monoclinic, P21/c (no. 14), a = 8.8312(5) Å, b = 12.9378(9) Å, c = 13.1531(8) Å, β = 93.022(5)°, V = 1500.73(16) Å3, Z = 4, R
gt(F) = 0.0411, wR
ref(F
2) = 0.1059, T = 293(2) K.
Molecular dynamics of neuronal information transfer
Authors: Heine Martin , Bikbaev Arthur 
Published: July 2018

Abstract
A detailed analysis of synapses as connecting elements between neurons is of central importance to understand the brain’s cognitive performance and its constraints. Nowadays, state-of-the-art optical methods make possible to localize individual molecules in a living cell. In particular, the dynamics of molecular composition can be evaluated in smallest neuronal compartments, such as pre- and postsynaptic membrane. The monitoring of the distribution of receptors, ion channels, and adhesion molecules over time revealed their continuous stochastic motion. This is surprising, since the synapses are considered as accumulation sites anchoring these molecules. The direct manipulation of the lateral dynamics of glutamate receptors, in combination with classical electrophysiological approaches, demonstrated that such molecular dynamics is necessary for the induction of synaptic plasticity and, in turn, is influenced by synaptic activity. Therefore, the molecular dynamics requires further studies in the context of the brain function in health and disease.
“Feminist, Gun-Toting Abolitionist with a Bankroll”: the Black Radical Philanthropy of Mary Ellen Pleasant
Authors: Papazoglakis Sarah 
Published: July 2018

Abstract
This article posits that philanthropy, most often identified with wealthy white American businessmen along the lines of Andrew Carnegie, has an alternative history whose central figures were black female liberators like Mary Ellen Pleasant, the “Mother of Civil Rights in California” who donated $30,000 to fund the Raid on Harper’s Ferry in 1859. Pleasant’s story subverts standard masculinist and implicitly white accounts of American philanthropy, envisioning underground financing by black proto-feminists as a radical tool for black emancipation in the Americas.
The soldier’s tolerance for autonomous systems
Authors: Galliott Jai 
Published: July 2018

Abstract
Autonomous robots are here and military leaders have typically sought to understand the human-machine relationship as a matter of trust - a human-machine engineering problem with a largely technical solution. This paper argues that engineering is merely one part of the challenge and that trust in robotics and automation ought to be understood in a much broader socio-psychological context, defined by a power process, the capacity of soldiers to endure subjection to technology and the extent to which automation impinges upon one’s autonomy or otherwise impacts the soldier’s wellbeing.
CO2-based hydrogen storage – hydrogen liberation from methanol/water mixtures and from anhydrous methanol
Authors: Trincado Monica , Vogt Matthias 
Published: July 2018

AbstractNew strategies for the reforming of methanol under mild conditions on the basis of heterogeneous and molecular catalysts have raised the hopes and expectations on this fuel. This contribution will focus on the progress achieved in the production of hydrogen from aqueous and anhydrous methanol with molecular and heterogeneous catalysts. The report entails thermal approaches, as well as light-triggered dehydrogenation reactions. A comparison of the efficiency and mechanistic aspects will be made and principles of catalytic pathways operating in biological systems will be also addressed.
Archaeological investigations (archaeometry)
Authors: Rousaki Anastasia , Moens Luc , Vandenabeele Peter 
Published: July 2018

AbstractArchaeometry is the research area on the edge between humanities and natural sciences: it uses and optimises methods from chemistry, spectroscopy, physics, biology, etc. to help answering research questions from humanities. In general, these objects are investigated for several reasons. Besides the fundamental interest to know about the materials that were used in the past, the study of artefacts can support their preservation, either by helping to select optimal storage or display conditions, either by investigating decay pathways and suggesting solutions. Other reasons for art analysis include provenance studies, dating the artefact or identifying forgeries. Since several years, Raman spectroscopy is increasingly applied for the investigation of objects of art or archaeology. The technique is well-appreciated for the limited (or even absent) sample preparation, the relative straightforward interpretation of the spectra (by fingerprinting - comparing them against a database of reference pigments) and its speed of analysis. Moreover, the small spectral footprint – allowing to record a molecular spectrum of particles down to 1 µm, the typical size of pigment grains – is certainly a positive property of the technique. Raman spectroscopy can be considered as rather versatile, as inorganic as well as organic materials can be studied, and as the technique can gather information on crystalline as well as on non-crystalline phases. As a consequence, Raman spectroscopy can be used to study antique objects and twentieth-century synthetic (organic) materials – illustrating the wide range of applications. Finally, the technique is as non-destructive, provided the laser power is kept sufficiently low not to damage the artwork. In literature, the terms “non-invasive” and “non-destructive” are used, where the first term means that no sampling is involved, and the latter term indicates that no sample is taken or that during analysis the sample is not consumed (destroyed) and remains available for further analysis.
Synthesis and characterization of size-controlled silver nanowires
Authors: Zhang Pei , Lin Shudong , Hu Jiwen 
Published: July 2018

Abstract
Silver nanowires (AgNWs) have attracted attentions form both academia and industry due to their outstanding electronic and optical properties. The AgNW-based devices for various uses were invented in recent years. It is well known that the sizes of AgNWs have a crucial effect on the performance of AgNW-based devices. However, how to synthesize AgNWs with controlled sizes is still unsolved. Researchers reported many methods to synthesize AgNWs with different sizes in the past decade. However, a review that focuses on the synthetic methods of AgNWs is very rare. The aim of this review is to summarize the recent developments that have been achieved with AgNWs, and many procedure details and results and discussions will be provided for practical use.
Graphical Abstract:
Synthesis of metallic nanoparticles by microplasma
Authors: Lin Liangliang , Starostin Sergey A. , Li Sirui , Hessel Volker 
Published: July 2018

AbstractThe synthesis of metallic nanoparticles has been of long standing interest, primarily induced by their novel and unique properties that differ considerably from bulk materials. Despite various methods have been developed, it is still a challenge to produce high-quality metallic nanoparticles with controllable properties in a simple, cost-effective and environmentally benign manner. However, the development of the microplasma-assisted technology can bring an answer to this formidable challenge. In the present work, four main microplasma configurations used for metallic synthesis of metallic nanoparticles are reviewed.  These are  hollow-electrode microdischarges, microplasma jets with external electrodes, microplasma jets with consumable electrodes and plasma–liquid systems. The state of the art characterization methodologies and diagnostic techniques forin situmicroplasma-assisted precursor dissociation as well asex situ metallic nanoparticles analysis is also summarized. Further, a broad category of representative examples of microplasma-induced metallic nanoparticle fabrication is presented, together with the discussion of possible synthesis mechanisms. This is followed by a brief introduction to related safety considerations. Finally, the future perspectives, associated challenges and feasible solutions for scale-up of this technique are pointed out.Graphical Abstract:
Die Besteuerung des Gewinns aus den grenzüberschreitenden Direktgeschäften von Google, Facebook & Co.
Authors: Richter Wolfram F. 
Published: July 2018

ZusammenfassungDie Unternehmen der digitalen Wirtschaft werden verdächtigt, zu wenig Steuern zu zahlen. Auf Dauer muss beides nicht so bleiben. Schließlich haben kleine Länder einen starken Anreiz, den Import digitaler Unternehmensleistungen – anders als den Import von Kapital – unilateral zu besteuern. Daher besteht vielmehr die Gefahr, dass es ohne internationale Vereinbarungen längerfristig zu einer Doppelbesteuerung von digitalen F&E-Aktivitäten kommt. Dagegen spricht allenfalls die begründete Erwartung, dass die Exportländer im eigenen Interesse einer internationalen Steuerrechtsordnung zustimmen, die die Teilung des Gewinns aus digitalen Unternehmensleistungen zur Regel macht. Eine solche Gewinnteilung lässt sich auch mit einer normativen Analyse zwischenstaatlicher Steuergerechtigkeit rechtfertigen. Derartige theoretische Erkenntnisse ermöglichen es, die jüngsten Vorschläge der Europäischen Kommission zur fairen Besteuerung der digitalen Wirtschaft einzuordnen.
Zehn Jahre nach dem Konkurs von Lehman Brothers
Authors: Winkler Adalbert 
Published: July 2018

Zusammenfassung
Seit dem Konkurs von Lehman Brothers steht die Geldpolitik der Europäischen Zentralbank (EZB) in Deutschland unter verschärfter Beobachtung. Denn schon die Krisenmaßnahmen 2008/09 verstießen in grober Weise gegen aus ordnungspolitischer Sichtweise zentrale Prinzipien: das Haftungsprinzip und das Primat der Währungspolitik. Seit 2010 tragen Ökonomen, Journalisten und Politiker EZB-Kritik aber in bis dato unbekannter Schärfe vor, verbunden mit der Dauerwarnung oder der Prognose, dass als Folge der Geldpolitik Inflation, Finanzinstabilitäten, allgemeines Siechtum und andere extreme Risiken ins Haus stünden. Nichts davon hat sich bewahrheitet. Nach Adalbert Winkler ist dies auf zentrale Schwächen einer rigiden ordnungspolitischen Sichtweise zurückzuführen: auf die Unfähigkeit, Krisen als Liquiditätskrisen zu erfassen, und auf die Gleichsetzung von Stabilität mit der Wahl bestimmter geldpolitischer Instrumente statt mit dem Erreichen der Zielgröße Preisstabilität. Eine selbstkritische Aufarbeitung dieser Schwächen tut not, statt stets auf die lange Frist zu verweisen, in der sich angeblich die Richtigkeit der EZB-Kritik erweisen werde.
Die Auswirkungen der Automatisierung auf Wachstum, Beschäftigung und Ungleichheit
Authors: Prettner Klaus , Geiger Niels , Schwarzer Johannes A. 
Published: July 2018

ZusammenfassungDie Automatisierung ist eines der wichtigsten Phänomene, über die aktuell innerhalb der Wirtschaftswissenschaften und in der breiteren Öffentlichkeit diskutiert wird. Dabei finden sich sehr unterschiedliche Positionen: Pessimisten verweisen auf die negativen Beschäftigungseffekte, wenn Menschen mehr und mehr durch Maschinen ersetzt werden und ihre am Markt angebotene Arbeitsleistung somit obsolet wird. Gleichzeitig gilt die Automatisierung auch als Ursache für einen Anstieg der wirtschaftlichen Ungleichheit. Optimistische Stimmen erinnern an die Entwicklung seit der Industriellen Revolution, die mit hohem Produktivitätswachstum und starken Wohlfahrtssteigerungen durch fortlaufende technologische Veränderungen einherging, ohne dass es langfristig zu Massenarbeitslosigkeit gekommen ist. In diesem Survey präsentieren die Autoren empirische Daten und skizzieren ein einfaches Wachstumsmodell, das einen ersten Einblick in die zu erwartenden ökonomischen Auswirkungen der Automatisierung erlaubt. Anschließend vertiefen und erweitern sie die Ergebnisse unter Bezugnahme auf die aktuelle wissenschaftliche Literatur. Aus den verschiedenen Ansatzpunkten und Überlegungen leiten sie schließlich wirtschaftspolitische Handlungsmöglichkeiten ab und erörtern deren Einschränkungen.
Preparation of dual-modality yttrium-90 radiolabeled nanoparticles for therapeutic investigation
Authors: Khameneh Elham Sattarzadeh , Amini Mostafa M. , Kakaei Saeed , Khanchi Alireza 
Published: July 2018

Abstract
Magnetic Fe3O4 nanoparticles with narrow size distribution were synthesized by simple and high yielded co-precipitation technique using ferrous salts with a molar ratio of Fe3+/Fe2+=2. After coating of the nanoparticles with Stöber silica (SiO2@Fe3O4), nanoparticles were functionalized by amine groups. Then chelator molecules diethylenetriaminepentaacetic (DTPA) and tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) were coupled to the APTS-SiO2@Fe3O4 to chelating Y-90 radiometal that makes these nanoparticles a suitable agent for therapeutic application as dual-modality PET/MRI imaging. The results show the coupling of DTPA takes place better than DOTA. Synthesis of magnetic nanoparticles (MNPs) was followed by structure identification using XRD, SEM, TGA and IR techniques. In order to trace MNPs biodistribution, the radiolabeled MNPs-DTPA were prepared using 90Y (production of 90Y/90Sr generator) with a good labeling efficiency (about 92%, RTLS method). The biodistribution of the radiolabeled MNPs was checked in normal male rats up to 24 h compared to free Y3+. The data shows that the tracer accumulation is in reticuloendothelial tissue while the stability of the complex is highly retained.
The natural environment as a reservoir of pathogenic and non-pathogenic Acinetobacter species
Authors: Adewoyin Mary A. , Okoh Anthony I. 
Published: July 2018

Abstract

Acinetobacter is a genus of Gram-negative bacteria, which are oxidase-negative, exhibiting a twitching motility under a magnifying lens. Besides being important soil microorganisms, due to their contribution to the soil fertility, Acinetobacter species, particularly A. baumannii, hold a prominent place within the genus because, it is the most virulent among the other species, causing varying degrees of human infections in clinical environments. However, results of different research have shown that Acinetobacter species can be isolated from such natural environments as surface water, wastewater and sewage, healthy human skin, plant, animal and food material as well as domestic appliances. The presence of some other Acinetobacter species in the natural environment has been associated with beneficial roles including soil improvement, detoxification of oil spillages and as microflora in human and plant bodies. In this paper, we carried out an overview of various natural ecological niches as reservoirs of pathogenic and non-pathogenic Acinetobacter species.
Syntaxe et discursivité : Le cas de la dislocation gauche
Authors: Combettes Bernard 
Published: July 2018

Résumé
Le but de cet article est d’examiner le fonctionnement discursif des constructions disloquées en français. On étudie successivement la dislocation gauche (« ce livre, je l’ai lu ») et la dislocation droite (« je l’ai lu, ce livre »), en montrant ce qui les distingue dans le domaine de la connaissance partagée. La prise en compte du degré de saillance du référent concerné permet de rattacher cette question à celle du dynamisme communicatif et de voir dans quelle mesure chacune de ces constructions participe au marquage de la rhématicité du syntagme verbal.
Approche procédurale de la lecture : Catégories flottantes et unités élastiques
Authors: Lundquist Lita 
Published: July 2018

Résumé L’article vise trois objectifs différents, mais intégrés : le français langue étrangère, la lecture et les textes spécialisés, trois objectifs qui nous situent au cœur de la linguistique textuelle contrastive, avec des excursions dans la linguistique cognitive et ses réflexions sur le rôle de différents types de savoir : savoir sur la langue, sur le texte et sur le monde. Dans la perspective procédurale de la lecture, nous considérons lescatégories textuelles : discours, genreettype de textecomme des déclencheurs d’attentes « descendants », et lesunités linguistiques, à déterminer par leur forme, fonction et frontières, comme des déclencheurs « ascendants » du traitement « en ligne » du matériau linguistique arrivant. Nous illustrerons comment ces deux procédures, descendante et ascendante, se combinent dans une « lecture raisonnée », de prédiction-identification-vérification-(correction), où catégories textuelles et unités linguistiques se concrétisent et se déterminent en cours de route, tout selon le savoir linguistique, textuel et du monde, du lecteur.
Central and peripheral pain sensitization during an ultra-marathon competition
Authors: Agnew James W. , Hammer Steven B. , Roy Alexandre L. , Rahmoune Amina 
Published: July 2018

Abstract

Background and aims
The participation in ultra-marathons and other ultra-endurance events has increased exponentially over the past decade. There is insufficient data on variation in pain mechanisms in exercise overall but especially in the ultra-endurance athlete population. To further understand peripheral and central pain sensitization we have investigated pressure pain threshold and conditioned pain modulation during three separate ultra-marathon competitions.

Methods
Each ultra-marathon investigated was held in the state of Florida, USA, over flat, sandy and paved surfaces under generally warm to hot, humid conditions. Pressure pain threshold was measured utilizing a Baseline © Dolorimeter. The blunt end of the dolorimeter stylus was placed onto the distal dominant arm, equidistant between the distal radius and ulna, three times in a blinded manner to insure that the testing technician did not influence the subject’s responses. Conditioned pain modulation was measured immediately after the PPT measures by placing the non-dominant hand in a cool water bath maintained at 15°C. The same dolorimeter measurement was repeated two more times on the dominant arm while the non-dominant hand remained in the water. Data was analyzed with a paired t-test.

Results
Pressure pain threshold was significantly decreased (p<0.05) at 25, 50 and 100 miles. Conditioned pain modulation was also significantly decreased (p<0.05) at 25, 50 and 100 miles of an ultra-marathon competition.

Conclusions
Together these data suggest an increased peripheral and/or central pain sensitization starting at 25 miles and continuing throughout an ultra-marathon competition run in these conditions. This is the first study that provides evidence of a decreased peripheral pain threshold and decreased central pain inhibition from ultra-marathon running. Decreases in both the peripheral pain threshold and central inhibition may result from nociceptor plasticity, central sensitization or a combination of both.

Implications
Based on previous research that has indicated a central sensitization resulting from inflammation and the well-documented inflammatory response to the rigors of ultra-marathon competition, we suggest the decreased peripheral pain threshold and decreased descending pain inhibition results from this inflammatory response of running an ultra-marathon.
Determinants of binomial-related circulant matrices
Authors: Jantaramas Trairat , Jitman Somphong , Kaewsaard Pornpan 
Published: July 2018

Abstract
Due to their rich algebraic structures and wide applications, circulant matrices have been of interest and continuously studied. In this paper, n×n complex left and right circulant matrices whose first row consists of the coefficients in the expansion of (x + zy)n−1 are focused on, where z is a nonzero complex number and n is a positive integer. In the case where z ∈ {1, −1, i, −i}, explicit formulas for the determinants of such matrices are completely determined. Known results on the determinants of binomial circulant matrices can be viewed as the special case where z = 1. Finally, some remarks and open problems are discussed.