bluuebunny/crossref_metadata_2025_split huggingface dataset:
The ecology of population dispersal: Modeling alternative basin‐plateau foraging strategies to explain the Numic expansion
Authors: Magargal Kate E. , Parker Ashley K. , Vernon Kenneth Blake , Rath Will , Codding Brian F. 
Published: April 2017

AbstractObjectivesThe expansion of Numic speaking populations into the Great Basin required individuals to adapt to a relatively unproductive landscape. Researchers have proposed numerous social and subsistence strategies to explain how and why these settlers were able to replace any established populations, including private property and intensive plant processing. Here we evaluate these hypotheses and propose a new strategy involving the use of landscape fire to increase resource encounter rates.MethodsImplementing a novel, spatially explicit, multi‐scalar prey choice model, we examine how individual decisions approximating each alternative strategy (private property, anthropogenic fire, and intensive plant processing) would aggregate at the patch and band level to confer an overall benefit to this colonizing population. Analysis relies on experimental data reporting resource profitability and abundance, ecological data on the historic distribution of vegetation patches, and ethnohistoric data on the distribution of Numic bands.ResultsModel results show that while resource privatization and landscape fires produce a substantial advantage, intensified plant processing garners the greatest benefit. The relative benefits of alternative strategies vary significantly across ecological patches resulting in variation across ethnographic band ranges. Combined, a Numic strategy including all three alternatives would substantially increase subsistence yields.ConclusionsThe application of a strategy set that includes landscape fire, privatization and intensified processing of seeds and nuts, explains why the Numa were able to outcompete local populations. This approach provides a framework to help explain how individual decisions can result in such population replacement events throughout human history.
A case of cerebral tuberculoma mimicking neurocysticercosis
Authors: Yuzawa Hiroko , Hirose Yousuke , Kimura Tomonori , Kimura Sho , Sugawara Hisanori , Yanagisawa Asako , Toi Sono , Ohashi Takashi , Sadahiro Tomohito 
Published: April 2017

CaseA 42‐year‐old Peruvian woman residing in Japan for 11 years with a family history of neurocysticercosis presented to our intensive care unit with fever and intense headache.Computed tomography indicated multiple micronodular lesions in the brain parenchyma, and cerebral tuberculoma and neurocysticercosis were considered in the differential diagnosis. Neurocysticercosis was initially suspected, and oral praziquantel was initiated. However, because of a high adenosine deaminase level in the cerebrospinal fluid and positive peripheral blood interferon gamma release test result, cerebral tuberculoma was subsequently considered.OutcomeAntituberculous drugs with steroids were initiated on day 10, after which the symptoms gradually resolved; the patient was discharged on day 29. Gadolinium‐contrast magnetic resonance imaging 8 months later showed reduced nodular shadows, confirming cerebral tuberculoma.ConclusionImmediate diagnosis and treatment are imperative for cerebral tuberculoma, a lethal infection. Considering the recent increases in immigration worldwide, increased cases of tuberculoma mimicking neurocysticercosis are expected.
Associative Covalent Relay: An Oxadiazolone Strategy for Rhodium(III)‐Catalyzed Synthesis of Primary Pyridinylamines
Authors: Yu Xiaolong , Chen Kehao , Wang Qi , Guo Shan , Zha Shanke , Zhu Jin 
Published: April 2017

AbstractA relay formalism is proposed herein for categorizing the interplay among reactants, target product, and catalytic center in transition‐metal catalysis, an important factor that can dictate overall catalysis viability and efficiency. In this formalism, transition‐metal catalysis can proceed by dissociative relay, associative covalent relay, and associative dative relay modes. An intriguing associative covalent relay process operates in rhodium(III)‐catalyzed oxadiazolone‐directed alkenyl C−H coupling with alkynes and allows efficient access to primary pyridinylamines. Although the primary pyridinylamine synthesis mechanism is posteriori rationalized, the relay formalism formulated herein can provide an important mechanistic conceptual framework for future catalyst design and reaction development.
In‐Phase Ultra High‐Resolution In Vivo NMR
Authors: Fugariu Ioana , Bermel Wolfgang , Lane Daniel , Soong Ronald , Simpson Andre J. 
Published: April 2017

AbstractAlthough current NMR techniques allow organisms to be studied in vivo, magnetic susceptibility distortions, which arise from inhomogeneous distributions of chemical moieties, prevent the acquisition of high‐resolution NMR spectra. Intermolecular single quantum coherence (iSQC) is a technique that breaks the sample's spatial isotropy to form long range dipolar couplings, which can be exploited to extract chemical shift information free of perturbations. While this approach holds vast potential, present practical limitations include radiation damping, relaxation losses, and non‐phase sensitive data. Herein, these drawbacks are addressed, and a new technique termed in‐phase iSQC (IP‐iSQC) is introduced. When applied to a living system, high‐resolution NMR spectra, nearly identical to a buffer extract, are obtained. The ability to look inside an organism and extract a high‐resolution metabolic profile is profound and should find applications in fields in which metabolism or in vivo processes are of interest.
Auto‐Tandem Catalysis with Frustrated Lewis Pairs for Reductive Etherification of Aldehydes and Ketones
Authors: Bakos Mária , Gyömöre Ádám , Domján Attila , Soós Tibor 
Published: April 2017

AbstractHerein we report that a single frustrated Lewis pair (FLP) catalyst can promote the reductive etherification of aldehydes and ketones. The reaction does not require an exogenous acid catalyst, but the combined action of FLP on H2, R‐OH or H2O generates the required Brønsted acid in a reversible, “turn on” manner. The method is not only a complementary metal‐free reductive etherification, but also a niche procedure for ethers that would be either synthetically inconvenient or even intractable to access by alternative synthetic protocols.
Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments
Authors: Melaimi Mohand , Jazzar Rodolphe , Soleilhavoup Michèle , Bertrand Guy 
Published: April 2017

AbstractDiscovered in 2005, cyclic (alkyl)(amino)carbenes (CAACs) are among the most nucleophilic (σ donating) and also electrophilic (π‐accepting) stable carbenes known to date. These properties allow them to activate a variety of small molecules and enthalpically strong bonds, to stabilize highly reactive main‐group and transition‐metal diamagnetic and paramagnetic species, and to bind strongly to metal centers, which gives rise to very robust catalysts. The most important results published up to the end of 2013 are briefly summarized, while the majority of this Review focuses on findings reported within the last three years.
Fabrication of a sulfonated aramid‐graphene nanoplatelet composite paper and its performance as a supercapacitor electrode
Authors: Bose Saswata , Basu Sankhadeep , Das Arit , Rahman Mehabub , Drzal Lawrence T. 
Published: April 2017

ABSTRACTSulfonated aramid (SA) fiber modified graphene nanoplatelet (GnP) paper was fabricated employing simple vacuum filtration technique. The SA macromolecules were noncovalently attached on the surface of GnP through π−π interactions. Robustness of the film was characterized via dynamic mechanical analysis study. X‐ray photoelectron spectroscopy was employed to investigate the extent of surface functionalization. The specific capacitance of 166 F/g was obtained for the sulfonated graphene nanoplatelet composite paper with 97% of specific capacitance retained after 1000 cycles establishing the cyclic stability of the said composite paper. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45099.
Ensemble forecasting of Corbicula fluminea worldwide distribution: Projections of the impact of climate change
Authors: Gama Mafalda , Crespo Daniel , Dolbeth Marina , Anastácio Pedro Manuel 
Published: April 2017

Abstract

Global biodiversity is at risk owing to climate change, and freshwater ecosystems are expected to suffer the most. In recent years niche‐based models (NBMs) have been used to predict species distribution and are an important tool for conservation and management of aquatic ecosystems. In this work, the current and future climatic suitability areas of the invasive species Corbicula fluminea, which has known adverse ecological and economic impacts, were investigated.
The species distribution modelling was based on nine algorithms in BIOMOD2, summarized in an ensemble forecasting approach. To model the species distribution, eight climatic parameters related to temperature and precipitation variables were considered. Three time frames (current, 2050 and 2070) were modelled using four increasing CO2 emission scenarios.
The performance of individual models was excellent according to the area under the receiver operating characteristic curve (AUC) and good to excellent according to true skill statistics (TSS). Annual mean temperature, minimum temperature of the coldest month and mean temperature of the coldest quarter were the most important variables predicting C. fluminea occurrence. Of the total continental area, 6.6% was predicted to be suitable for C. fluminea in current conditions.
In the future, suitable area will increase from the current value of 6.6% to values from 9.4% to 12.6%, according to the 2050 projections and up to 12.7% in 2070 in high emission scenarios.
Overall, the results indicate that climate change will favour the expansion of C. fluminea into new river basins, especially at higher latitudes, and that future climatic scenarios may double the suitable area for Corbicula fluminea.
Probing the Effect of Salinity and pH on Surface Interactions between Air Bubbles and Hydrophobic Solids: Implications for Colloidal Assembly at Air/Water Interfaces
Authors: Cui Xin , Shi Chen , Zhang Shuo , Xie Lei , Liu Jing , Jiang Dazhi , Zeng Hongbo 
Published: April 2017

AbstractIn this work, a bubble probe atomic force microscope (AFM) was employed to quantify the interactions between two air bubbles and between an air bubble and an octadecyltrichlorosilane (OTS)‐hydrophobized mica under various aqueous conditions. The key parameters (e.g., surface potentials, decay length of hydrophobic attraction) were obtained by analyzing the measured forces through a theoretical model based on Reynolds lubrication theory and an augmented Young–Laplace equation by including effect of disjoining pressure. The bubble‐OTS hydrophobic attraction with a decay length of 1.0 nm was found to be independent of solution pH and salinity. These parameters were further used to predict the attachment of OTS‐hydrophobized particles onto the air/water interface, demonstrating that particle attachment driven by hydrophobic attraction could be facilitated by suppressing electrical double‐layer repulsion at low pH or high salinity condition. This facile methodology can be readily extended to quantify interactions of many other colloidal particles with gas/water and oil/water interfaces, with implications for colloidal assembly at different interfaces in many engineering applications.
Design and Implementation of The Plug&Play Enabled Flexible Modular Wireless Sensor and Actuator Network Platform
Authors: Mikhaylov Konstantin , Petäjäjärvi Juha 
Published: April 2017

AbstractIn this paper we address the problem of increasing the flexibility of the contemporary wireless sensor and actuator networks (WSANs) in regard to the design of the nodes. For this we propose the concept of a Plug&Play enabled modular WSAN node platform. According to our concept, the new WSAN nodes with desired functionalities can be built by stacking together the different hardware modules encapsulating power sources, processing units, wired and wireless transceivers, sensors and actuators, or even sets of these. Once a node is built, it automatically discovers and identifies all the connected hardware modules, obtains required software and tunes its own operation taking into account the node's structure, available resources and active applications. In this paper we first present the concept and then report the developed hardware and software architectures and the most critical mechanisms enabling implementation. Also we discuss the practical implementations and report the evaluation results for the prototyped solution. Our results show that the developed platform is much more feature and resource rich than the existing ones, which is achieved at a cost of increased consumption and size. We believe that the unique features of the proposed platform have the potential to drastically change the procedure of WSAN development, especially when it comes to experimenting and developing dynamic WSANs with a heterogeneous structure. In this respect the hardware identification and reconfiguration capabilities conceived in the platform can be utilized in full and may drastically increase the performance of WSANs, if combined with novel control and optimization schemes yet to be developed.
On The Modeling of Twin Rotor MIMO System Using Chirp Inputs as Test Signals
Authors: Paul Parthish Kumar , Jacob Jeevamma 
Published: April 2017

AbstractThis paper addresses the modeling problem for the twin rotor multi input multi output system. To develop experimental data, this popular commercial laboratory model of a helicopter from Feedback Instruments Ltd is excited with band limited chirp inputs. The conclusions drawn in this paper lead to four significant achievements: 1) derivation of a linear nominal model for Twin Rotor MIMO System, TRMS in short, from its equivalent nonlinear mathematical representation; 2) dynamic modeling of TRMS; 3) determination of non‐minimum phase dynamics; and 4) determination of linear operating region. The work considers systematic study of the system dynamics of TRMS and analytical treatment of its identified data leading to derivation of the RHP zero dynamics followed by pictorial illustrations indicating resonant modes associated with the plant. The method used in the present paper can be essentially used in modeling of 2 × 2 plants exhibiting non‐minimum phase dynamics and model uncertainties.
Greenhouse gases stabilizing winter atmosphere in the Indo‐Gangetic plains may increase aerosol loading
Authors: Fosu Boniface O. , Wang S.‐Y. Simon , Wang Sheng‐Hsiang , Gillies Robert R. , Zhao Lin 
Published: April 2017

AbstractThe concentration of aerosols along the Indo‐Gangetic Plains (IGP) and their adverse effects on human health and the environment are increasing, particularly in winter, when the IGP is prone to high anthropogenic aerosol loading (i.e. particulate matter – PM). In this study, three reanalysis datasets including the MERRA aerosol reanalysis were analyzed to characterize the relationship between winter atmospheric stability and aerosols. Due to the lack of long‐term aerosol observations, an empirical relationship between PM and the atmospheric temperature lapse rate was derived. It is shown that PM and stability have a strong relationship at the lower troposphere. Analyses of Coupled Model Intercomparison Project (CMIP5) single‐forcing experiments indicate that the recent stabilization of the atmosphere in the IGP can be explained by both greenhouse gas (GHG) and aerosol forcings. Since a more stable atmosphere traps more PM, stabilization alone can increase aerosols even in the absence of changes in emission sources. Regional simulation with fixed anthropogenic aerosol loading also supports this finding. Thus, enhanced stabilization caused by both aerosols and GHG in the atmosphere can further increase winter aerosol loading in the IGP.
Changes in the ENSO–rainfall relationship in the Mediterranean California border region
Authors: Pavia Edgar G. 
Published: April 2017

AbstractThe El Niño‐Southern Oscillation (ENSO)–rainfall relationship in the Mediterranean California border region (MCBR) changed recently: considering 30‐year running periods (1951–1952 to 1980–1981, until 1986–1987 to 2015–2016) in four stations, ENSO–rainfall correlations (r), and mean precipitation (P) decreased almost simultaneously. Moreover, r and P appear related throughout the entire record: at the beginning and recently both seem lower than at an intermediate stage. Similar results are found for gridded precipitation data in the vicinity of the MCBR, suggesting that periods of recurrent dry seasons have been less related to ENSO than periods of numerous rainy seasons in this region during the last 65 years.
Inclusion of land use changes in long‐term regional climate simulations over East Asia
Authors: Zhao Deming , Wu Jian 
Published: April 2017

AbstractLong‐term simulations with regional climate models (RCMs) show biases over East Asia that result partly from fix‐in‐time land use data (EX2001). Using four satellite‐based land use images (EX8901) from the past 30 years instead of default values, 34‐year integrations were performed to make comparisons (EX8901 minus EX2001) over East Asian land areas. The decreased albedo (−0.019) resulted in weakened upward short‐wave flux, contributing to positive surface radiative forcing (2.89 W m−2), which then induced enhanced sensible heat fluxes. The near‐surface wind speed was weakened (−0.15 m s−1) in relation to the increased roughness length (0.042 m) and weakened pressure gradient, and induced a decreased precipitation bias of 0.0095 mm day−1. The increased ground temperature and enhanced soil water content promoted strengthened sensible and latent heat fluxes, which induced a decreased surface air temperature bias (−0.24 °C). Results show that by including land use changes, model simulations can be improved.
Unifying pricing formula for several stochastic volatility models with jumps
Authors: Baustian Falko , Mrázek Milan , Pospíšil Jan , Sobotka Tomáš 
Published: April 2017

In this paper, we introduce a unifying approach to option pricing under continuous‐time stochastic volatility models with jumps. For European style options, a new semi‐closed pricing formula is derived using the generalized complex Fourier transform of the corresponding partial integro‐differential equation. This approach is successfully applied to models with different volatility diffusion and jump processes. We also discuss how to price options with different payoff functions in a similar way.In particular, we focus on a log‐normal and a log‐uniform jump diffusion stochastic volatility model, originally introduced by Bates and Yan and Hanson, respectively. The comparison of existing and newly proposed option pricing formulas with respect to time efficiency and precision is discussed. We also derive a representation of an option price under a new approximative fractional jump diffusion model that differs from the aforementioned models, especially for the out‐of‐the money contracts. Copyright © 2017 John Wiley & Sons, Ltd.
Dauerhafte Betonfahrbahndecken durch Verwendung unterschiedlicher Bindemittel in Ober‐ und Unterbeton
Authors: Müller Matthias , Ludwig Horst‐Michael , Schulte‐Schrepping Christoph , Breitenbücher Rolf 
Published: April 2017

AbstractDie Eignung hüttensandhaltiger Zemente sowie von Steinkohlenflugaschen zur Vermeidung einer betonschädigenden Alkali‐Kieselsäure‐Reaktion (AKR) im Beton ist hinreichend bekannt. Im deutschen Betonstraßenbau werden entsprechende Bindemittel jedoch nur selten eingesetzt, da eine Verschlechterung des Frost‐Tausalz‐Widerstands des Betons erwartet wird, insbesondere bei hohen Klinkersubstitutionsraten. Die zweischichtige Bauweise von Fahrbahndecken bietet hier die Möglichkeit, Zemente mit erhöhtem Hüttensandanteil nur im Unterbeton einzusetzen, während im hochbelasteten, dünnen Oberbeton weiterhin klinkerreiche Zemente verwendet werden. So kann die Gefahr einer schädigenden AKR im Unterbeton vermindert werden, ohne den Frost‐Tausalz‐Widerstand der Fahrbahndecke zu beeinträchtigen. Diese Herangehensweise wird im aktuellen Regelwerk (TL Beton‐StB 07) allerdings noch ausgeschlossen. Für den Ober‐ und Unterbeton ist ein Zement der gleichen Art und Festigkeitsklasse zu verwenden. Weiterhin ist die Anrechnung von Steinkohlenflugasche auf den Wasserzementwert von Straßenbeton nicht zulässig. Im Rahmen eines Forschungsvorhabens sollten daher die notwendigen theoretischen sowie labortechnischen Kenntnisse gewonnen werden, um die Chancen und Risiken einer flexibleren Bindemittelanwendung im Betonstraßenbau einzuschätzen.
Characterization of a novel allergenic protein from the octocoral Scleronephthya gracillima (Kuekenthal) that corresponds to a new GFP‐like family named Akane
Authors: Kato Yuko , Jimbo Mitsuru , Sakakibara Youichi , Onizuka Reiko , Takahashi Tatsuya , Matsuhashi Sachiko , Mita Hajime , Amada Kei , Imahara Yukimitsu , Tanabe Kimiko , Toda Akihisa , Kamiya Hisao 
Published: April 2017

AbstractCertain marine organisms have been known to cause allergic reactions among occupational fishermen. We have previously reported that bronchial asthma among the workers engaged in spiny lobster fishing in Japan was caused by octocorals such as Dendronephthya sp. and Scleronephthya gracillima (previously named Alcyonium gracillimum).Now we have found another octocoral, Scleronephthya gracillima (Kuekenthal), which causes the allergic disease in fishermen. The octocoral was characterized as a new green fluorescent protein (GFP)‐like family. The new allergen has a molecular mass of 27 kDa in 1D and 2D SDS‐PAGE under reduced conditions. The 27 kDa component was determined to be an allergen by western blotting, ECL immune staining method and absorption of patient sera with the antigen. Furthermore, the combination of analysis with LC‐ESI‐MS/MS and MASCOT search in the NCBInr database concluded the 27 kDa component had the sequence YPADI/LPDYFK, and that the 22 kDa component had the sequence QSFPEGFSWER, which both matched a GFP‐like protein in Acropora aculeus and in Montastraea annularis. Further analysis by MALDI‐TOF/MS/MS and MASCOT search in the NCBInr database of all 27 kDa eight spot components from 2D SDS‐PAGE indicated that the sequence QSFPEGFSWER also matched as GFP‐like protein in Lobophyllia hemprichii and Scleractinia sp. To our knowledge, this is the first report of the new allergenic protein that corresponds to a new GFP‐like protein named Akane, and which has fluorescent emissions in the red and green part of the spectra at 628 nm and 508 nm, respectively.
Luminescence properties of Ce3+ in orthosilicate oxyapatite NaY9(SiO4)6O2
Authors: Xie Mubiao , Xie Wei , Zhu Guoxian , Pan Rongkai 
Published: April 2017

AbstractCe3+‐doped orthosilicate oxyapatite NaY9(SiO4)6O2 phosphors NaY9–x(SiO4)6O2:xCe3+ were prepared by a conventional high‐temperature solid‐state reaction method, and their spectroscopic characteristics were systematically investigated. The occupancies of Ce3+ ions at two different sites (Wyckoff 6 h and 4f sites) in NaY9(SiO4)6O2 were determined. The influence of doping concentration on the emission intensity of Ce3+ was investigated and the critical distance Rc was estimated in terms of the concentration quenching data.