bluuebunny/crossref_metadata_2025_split huggingface dataset:
Trace elements in hydrothermal chalcopyrite
Authors: George Luke L. , Cook Nigel J. , Crowe Bryony B. P. , Ciobanu Cristiana L. 
Published: April 2017

ABSTRACTConcentration data are reported for 18 trace elements in chalcopyrite from a suite of 53 samples from 15 different ore deposits obtained by laser-ablation inductively-coupled plasma-mass spectrometry. Chalcopyrite is demonstrated to host a wide range of trace elements including Mn, Co, Zn, Ga, Se, Ag, Cd, In, Sn, Sb, Hg, Tl, Pb and Bi. The concentration of some of these elements can be high (hundreds to thousands of ppm) but most are typically tens to hundreds of ppm. The ability of chalcopyrite to host trace elements generally increases in the absence of other co-crystallizing sulfides. In deposits in which the sulfide assemblage recrystallized during syn-metamorphic deformation, the concentrations of Sn and Ga in chalcopyrite will generally increase in the presence of co-recrystallizing sphalerite and/or galena, suggesting that chalcopyrite is the preferred host at higher temperatures and/or pressures. Trace-element concentrations in chalcopyrite typically show little variation at the sample scale, yet there is potential for significant variation between samples from any individual deposit. The Zn:Cd ratio in chalcopyrite shows some evidence of a systematic variation across the dataset, which depends, at least in part, on temperature of crystallization. Under constant physiochemical conditions the Cd:Zn ratios in co-crystallizing chalcopyrite and sphalerite are typically approximately equal. Any distinct difference in the Cd:Zn ratios in the two minerals, and/or a non-constant Cd:Zn ratio in chalcopyrite, may be an indication of varying physiochemical conditions during crystallization.Chalcopyrite is generally a poor host for most elements considered harmful or unwanted in the smelting of Cu, suggesting it is rarely a significant contributor to the overall content of such elements in copper concentrates. The exceptions are Se and Hg which may be sufficiently enriched in chalcopyrite to exceed statutory limits and thus incur monetary penalties from a smelter.
Impact of ibrutinib dose adherence on therapeutic efficacy in patients with previously treated CLL/SLL
Authors: Barr Paul M. , Brown Jennifer R. , Hillmen Peter , O'Brien Susan , Barrientos Jacqueline C. , Reddy Nishitha M. , Coutre Steven , Mulligan Stephen P. , Jaeger Ulrich , Furman Richard R. , Cymbalista Florence , Montillo Marco , Dearden Claire , Robak Tadeusz , Moreno Carol , Pagel John M. , Burger Jan A. , Suzuki Samuel , Sukbuntherng Juthamas , Cole George , James Danelle F. , Byrd John C. 
Published: April 2017

Key PointsHigher ibrutinib DI is associated with improved PFS, independent of del17p or TP53 mutation. Ibrutinib hold for >1 week, often needed to manage adverse events, is associated with increased PFS events.
Synthesis and Properties of Dicyanomethylene-Endcapped Thienopyrrole-Based Quinoidal S,N-Heteroacenes
Authors: Jiang Hua , Oniwa Kazuaki , Xu Zhanqiang , Bao Ming , Yamamoto Yoshinori , Jin Tienan 
Published: April 2017

Abstract
A new series of highly π-extended dicyanomethylene-endcapped quinoidal S,N-heteroacenes (JH-quinoids) fused with thiophene and pyrrole rings have been designed and synthesized. The π-extension of the central S,N-heteroacene cores gives rise to significant red-shifted absorption maxima in solution without being affected by the long alkyl groups. The absorption maximum of JH10 with the longest quinoidal backbone in the thin film significantly red-shifted to the near-infrared region of 1260 nm as compared to that in solution (880 nm), indicating the formation of strong intermolecular interaction in the solid state. JH-quinoids maintain sufficiently low LUMO energy levels in the range of −4.09∼−4.22 eV regardless of the fused ring systems and substituents, while the HOMO energy levels increase with extending the length of S,N-heteroacenes; the highest HOMO energy level of JH10 is as high as −5.18 eV owing to the contributions from the nitrogen atoms and chalcogen. The molecular geometries of JH-quinoids optimized from the DFT calculations indicate their complete planar backbones and the trend of HOMO and LUMO energy levels variation is in good agreement with the cyclic voltammetry results. Consequently, the present JH-quinoids should be promising candidates for ambipolar organic semiconductors.
The Effect of Learning on Ambiguity Attitudes
Authors: Baillon Aurélien , Bleichrodt Han , Keskin Umut , l’Haridon Olivier , Li Chen 
Published: April 2017

This paper studies the effect of learning information on people’s attitudes toward ambiguity. We propose a method to separate ambiguity attitudes from subjective probabilities and to decompose ambiguity attitudes into two components. Under models like prospect theory that represent ambiguity through nonadditive decision weights, these components reflect pessimism and likelihood insensitivity. Under multiple priors models, they reflect ambiguity aversion and perceived ambiguity. We apply our method in an experiment where we elicit the ask prices of options with payoffs depending on the returns of initial public offerings (IPOs) on the New York Stock Exchange. IPOs are a natural context to study the effect of learning, as prior information about their returns is unavailable. Subjects perceived substantial ambiguity and they were insensitive to likelihood information. We observed only little pessimism and ambiguity aversion. Subjective probabilities were well calibrated and close to the true frequencies. Subjects’ behavior moved toward expected utility with more information, but substantial deviations remained even in the maximum information condition. Data and the online appendix are available at https://doi.org/10.1287/mnsc.2016.2700 This paper was accepted by Manel Baucells, decision analysis.
Mineralogy, Geochemistry, and Genesis of Bentonites in Miocene Volcanic-Sedimentary Units of the Ankara-Çankiri Basin, Central Anatolia, Turkey
Authors: Kadir Selahattin , Külah Tacit , Önalgil Nergis , Erkoyun Hülya , Elliott W. Crawford 
Published: April 2017

AbstractWidespread alteration in the Miocene lacustrine volcanic/sedimentary rocks of the Ankara-Çankiri basin of central Anatolia has resulted in the formation of sizeable (economic) quantities of bentonite deposits. No detailed characterization of the geological, mineralogical, and geochemical properties or the depositional environments of these primary and secondary bentonite deposits has been carried out to date. The present study was undertaken to close this knowledge gap. Two possible hypothetical processes were examined to explain the genesis of the bentonites: 1) The bentonites were formed by the devitrification of volcanic glass in a lacustrine setting; and 2) The bentonites were formed by the chemical weathering of previously deposited volcaniclastic sediments and ophiolitic materials. The characteristics of the bentonites were examined using X-ray diffractometry, scanning and transmission electron microscopy, energy dispersive spectroscopy, and chemical analyses of major and trace elements. The Ankara-Çankırı bentonites are found gradationally interbedded with parent Miocene volcanic and volcaniclastic rocks. These bentonites were deposited in a shallow lacustrine setting based on observed desiccation cracks, locally enclosed coal seams, plant rootlets, gypsum lenses, yellow sulfate-like fracture infillings, and ferric iron oxide stains. Smectite resulted from the chemical weathering of feldspar and possibly also the weathering of biotite and hornblende. This smectite was precipitated in situ on partially dissolved glass and feldspar. The average major-element composition of the smectite-rich clay fractions yielded the following montmorillonitic smectite structural formula: (Na0.33Ca0.31K0.18) (Al2.35Fe0.80Mg0.78)(Si7.79Al0.21)O20(OH)4.The interlayer cation occupancy in the smectite-rich clay fractions was based on the use of Na+/(Na++Ca2+) ratios and showed a composition between a Ca-smectite and a Na-smectite. The relative increases in several groups of elements according to the LREE/(MREE+HREE) ratio, Al2O3, the sum of Ni+Co+Cr, the sum of Fe2O3+MgO+TiO2, the positive correlation between Rb+Ba and Na2O+K2O, Sr and Rb, Rb/Sr and Zr, Zr/Sm and SiO2, the negative Eu anomaly, and the field and petrographic observations further showed that the Si, Al, Fe, and Mg required to form smectite were mainly supplied from the decomposition of feldspars, amphiboles, and volcanic glass from volcanic materials and were partially supplied from the chemical weathering of ophiolitic basement units. The bentonite deposits examined in this study are mainly primary bentonites derived from volcanics and local secondary bentonites from previously deposited volcaniclastic sediments and ophiolitic materials.
The Perceptions of Professionals Toward Siblings of Individuals With Intellectual and Developmental Disabilities
Authors: Burke Meghan M. , Lee Chung eun , Arnold Catherine K. , Owen Aleksa 
Published: April 2017

Abstract
Adult siblings of individuals with intellectual and developmental disabilities (IDD) report struggling to navigate the adult disability service delivery system and collaborate with professionals. To date, though, it is unclear how professionals encourage sibling involvement and, accordingly, the facilitators and challenges in working with siblings. For this study, 290 professionals participated in a national web-based survey; participants answered three open-ended questions about ways to involve siblings, positive experiences with siblings, and challenges in working with siblings. Professionals reported person-level and systems-level supports to encourage sibling involvement. Also, professionals reported enjoying working with cohesive families of individuals with IDD and witnessing the benefits that siblings bring to their brothers and sisters with IDD. Challenges in working with siblings included: lack of sibling involvement, systemic barriers, and caregiving burden. Implications for future research and practice are discussed.
AS TEORIAS DE CURRÍCULO NA IMPLEMENTAÇÃO DAS BRINQUEDOTECAS NA PRIMEIRÍSSIMA INFÂNCIA: CONTRIBUIÇÕES DA NEUROPSICOLOGIA
Authors: Monteiro Kobayashi Maria Do Carmo , Lopes Reis Márcia , Morganti Francesca 
Published: April 2017

Há algum tempo são conhecidas as relações que permeiam a brincadeira e aprendizagem, sobretudo quando sistematizadas nos espaços das brinquedotecas e na organização dos currículos escolares que incentivam e fomentam o desenvolvimento físico, cognitivo, criativo, social e a linguagem da criança. Mais recentemente, os estudos da neurociência tem permitido evidenciar, por meio do uso das imagens por ressonância magnética, como ocorrem os processos de aprendizagem e a sua relação com as oportunidades oferecidas às crianças, assim sugerem o papel dos objetos e das relações das crianças com outras pessoas e com o ambiente onde vivem, sendo fulcrais para seu pleno desenvolvimento e crescimento. Neste texto, são analisadas as relações entre as teorias do currículo, os objetos lúdicos e contribuições da neurociência. Tais interações possibilitam cada vez mais, a reorganização do sistema neural em desenvolvimento que, no caso da primeiríssima infância, parece ser otimizável com a quantidade de construções de aprendizagem desses sujeitos nas brinquedotecas. Ao final, parece ser possível inferir que esses espaços didáticos de aprendizagem devem ocupar um lugar privilegiado nas práticas escolares e curriculares da primeira infância.
Studi Tekno Ekonomi Desalinasi Air Laut Skala Kecil Dengan Sistem Reverse Osmosis
Authors: Yoshi Linda Aliffia , Widiasa I Nyoman 
Published: April 2017

Penelitian ini bertujuan untuk mendapatkan desain dan keekonomian desalinasi air laut di Indonesia yang mempunyai suku bunga bank 12-14%, tarif listrik Rp 1.300-1.800 per kWh, dan pajak air bawah tanah. Penggunaan sistem desalinasi SWRO di Indonesia pada umumnya dibuat skala kecil. Studi ini berdasarkan studi kasus di Pulau Bali dengan tarif listrik adalah Rp 1.335,29/kWh dan pajak air bawah tanah adalah Rp 4.950/m3. Evaluasi tekno-ekonomi dianalisa untuk kapasitas 150-1000 m3/hari, recovery sistem 40% dengan salinitas air laut 32.000 ppm, suku bunga 13%, dan jangka waktu pinjaman 10 tahun. Harga jual air desalinasi pada tahun pertama 24,300/m3. Berdasarkan hasil evaluasi ekonomi yang meliputi NPV dan IRR dapat disimpulkan bahwa investasi layak dilakukan.
Rational taxation in an open access fishery model
Authors: Rokhlin Dmitry B. , Usov Anatoly 
Published: April 2017

Abstract
We consider a model of fishery management, where n agents exploit a single population with strictly concave continuously differentiable growth function of Verhulst type. If the agent actions are coordinated and directed towards the maximization of the discounted cooperative revenue, then the biomass stabilizes at the level, defined by the well known “golden rule”. We show that for independent myopic harvesting agents such optimal (or ε-optimal) cooperative behavior can be stimulated by the proportional tax, depending on the resource stock, and equal to the marginal value function of the cooperative problem. To implement this taxation scheme we prove that the mentioned value function is strictly concave and continuously differentiable, although the instantaneous individual revenues may be neither concave nor differentiable.
State estimation in a decentralized discrete time LQG control for a multisensor system
Authors: Duda Zdzislaw 
Published: April 2017

Abstract
In the paper a state filtration in a decentralized discrete time Linear Quadratic Gaussian problem formulated for a multisensor system is considered. Local optimal control laws depend on global state estimates and are calculated by each node. In a classical centralized information pattern the global state estimators use measurements data from all nodes. In a decentralized system the global state estimates are computed at each node using local state estimates based on local measurements and values of previous controls, from other nodes.
In the paper, contrary to this, the controls are not transmitted between nodes. It leads to nonconventional filtration because the controls from other nodes are treated as random variables for each node. The cost for the additional reduced transmission is an increased filter computation at each node.
Robust H<sub>∞</sub> output feedback control of bidirectional inductive power transfer systems
Authors: Swain Akshya , Almakhles Dhafer , Neath Michael J. , Nasiri Alireza 
Published: April 2017

Abstract
Bidirectional Inductive power transfer (IPT) systems behave as high order resonant networks and hence are highly sensitive to changes in system parameters. Traditional PID controllers often fail to maintain satisfactory power regulation in the presence of parametric uncertainties. To overcome these problems, this paper proposes a robust controller which is designed using linear matrix inequality (LMI) techniques. The output sensitivity to parametric uncertainty is explored and a linear fractional transformation of the nominal model and its uncertainty is discussed to generate a standard configuration for μ-synthesis and LMI analysis. An H∞ controller is designed based on the structured singular value and LMI feasibility analysis with regard to uncertainties in the primary tuning capacitance, the primary and pickup inductors and the mutual inductance. Robust stability and robust performance of the system is studied through μ-synthesis and LMI feasibility analysis. Simulations and experiments are conducted to verify the power regulation performance of the proposed controller.
Pointwise observation of the state given by complex time lag parabolic system
Authors: Kowalewski Adam 
Published: April 2017

AbstractVarious optimization problems for linear parabolic systems with multiple constant time lags are considered. In this paper, we consider an optimal distributed control problem for a linear complex parabolic system in which different multiple constant time lags appear both in the state equation and in the Neumann boundary condition. Sufficient conditions for the existence of a unique solution of the parabolic time lag equation with the Neumann boundary condition are proved. The time horizon T is fixed. Making use of the Lions scheme [13], necessary and sufficient conditions of optimality for the Neumann problem with the quadratic performance functional with pointwise observation of the state and constrained control are derived. The example of application is also provided.
New perspectives of analog and digital simulations of fractional order systems
Authors: Charef Abdelfatah , Charef Mohamed , Djouambi Abdelbaki , Voda Alina 
Published: April 2017

AbstractIn the recent decades, fractional order systems have been found to be useful in many areas of physics and engineering. Hence, their efficient and accurate analog and digital simulations and numerical calculations have become very important especially in the fields of fractional control, fractional signal processing and fractional system identification. In this article, new analog and digital simulations and numerical calculations perspectives of fractional systems are considered. The main feature of this work is the introduction of an adjustable fractional order structure of the fractional integrator to facilitate and improve the simulations of the fractional order systems as well as the numerical resolution of the linear fractional order differential equations. First, the basic ideas of the proposed adjustable fractional order structure of the fractional integrator are presented. Then, the analog and digital simulations techniques of the fractional order systems and the numerical resolution of the linear fractional order differential equation are exposed. Illustrative examples of each step of this work are presented to show the effectiveness and the efficiency of the proposed fractional order systems analog and digital simulations and implementations techniques.
Genetic polymorphisms of the CYP1A1, GSTM1, and GSTT1 enzymes and their influence on cardiovascular risk and lipid profile in people who live near a natural gas plant
Authors: Pašalić Daria , Marinković Natalija 
Published: April 2017

AbstractThe aim of this cross-sectional study was to see whether genetic polymorphisms of the enzymes CYP1A1, GSTM1, and GSTT1 are associated with higher risk of coronary artery disease (CAD) and whether they affect lipid profile in 252 subjects living near a natural gas plant, who are likely to be exposed to polycyclic aromatic hydrocarbons (PAHs). Fasting serum concentrations of biochemical parameters were determined with standard methods. Genetic polymorphisms of CYP 1A1 rs4646903, rs1048943, rs4986883, and rs1799814 were genotyped with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFPL), while GSTM1 and GSTT1 deletions were detected with multiplex PCR. Cardiovascular risk was assessed with Framingham risk score, and the subjects divided in two groups: >10% risk and ≤10% risk. The two groups did not differ in the genotype frequencies. MANCOVA analysis, which included lipid parameters, glucose, and BMI with sex, age, hypertension and smoking status as covariates, showed a significant difference between the GSTT1*0 and GSTT1*1 allele carriers (p=0.001). UNIANCOVA with same covariates showed that total cholesterol and triglyceride levels were significantly higher in GSTT1*1 allele carriers than in GSTT1*0 carriers (p<0.001 and p=0.006, respectively). Our findings suggest that CYP1A1, GSTM1, and GSTT1 polymorphisms are not associated with the higher risk of CAD, but that GSTT1 affects lipid profile.
The effect of fertiliser treatments on the severity of Fusarium head blight and mycotoxin biosynthesis in winter rye
Authors: Cwalina-Ambroziak Bożena , Kurowski Tomasz P. , Waśkiewicz Agnieszka , Goliński Piotr , Stępień Arkadiusz , Głosek-Sobieraj Małgorzata , Perczak Adam 
Published: April 2017

AbstractThe fungi of the genus Fusarium cause Fusarium head blight (FHB), a devastating disease that reduces grain yield and quality. They also produce mycotoxins which may pose a serious threat to human and animal health. This study investigated the effects of NPK fertilisation, foliar application of Cu, Zn, and Mn, applied separately and in combination, and of the Nano-Gro®organic growth stimulator on the occurrence of FHB in cultivar Dańkowskie Diament rye based on the mycological analysis of kernels and on the concentrations of Fusarium mycotoxins in grain. The severity of FHB caused by seven species of the genus Fusarium was influenced by weather conditions in the analysed growing seasons. The applied fertilisation and the Nano-Gro®organic growth stimulator exerted varied effects on FHB development and the biosynthesis of Fusarium mycotoxins (deoxynivalenol, nivalenol, zearalenone and fumonisins) in grain. The greatest reduction in deoxynivalenol and nivalenol concentrations was noted in 2013, and the levels of moniliformin were lower in treated samples than in absolute control (untreated) samples in both years of the study. The severity of FHB positively correlated with the concentrations of zearalenone, deoxynivalenol, nivalenol, and moniliformin in the grain samples. Greater accumulation of ergosterol was noted in the rye grain harvested in 2013 than in 2012, and fertiliser treatment led to higher ergosterol concentrations than did control treatment.
Relationship between ultrasound bone parameters, lung function, and body mass index in healthy student population
Authors: Cvijetić Selma , Pipinić Ivana Sabolić , Varnai Veda Maria , Macan Jelena 
Published: April 2017

Abstract
Low bone mineral density has been reported in paediatric and adult patients with different lung diseases, but limited data are available on the association between lung function and bone density in a healthy young population. We explored the predictors of association between bone mass and pulmonary function in healthy first-year university students, focusing on body mass index (BMI). In this cross-sectional study we measured bone density with ultrasound and lung function with spirometry in 370 university students (271 girls and 99 boys). Information on lifestyle habits, such as physical activity, smoking, and alcohol consumption were obtained with a questionnaire. All lung function and bone parameters were significantly higher in boys than in girls (P<0.001). Underweight students had a significantly lower forced vital capacity (FVC%) (P=0.001 girls; P=0.012 boys), while overweight students had a significantly higher FVC% than normal weight students (P=0.024 girls; P=0.001 boys). BMI significantly correlated with FVC% (P=0.001) and forced expiratory volume in 1 second (FEV1 %) in both genders (P=0.001 girls; P=0.018 boys) and with broadband ultrasound attenuation (BUA) in boys. There were no significant associations between any of the bone and lung function parameters either in boys or girls. The most important determinant of lung function and ultrasound bone parameters in our study population was body mass index, with no direct association between bone density and lung function.