bluuebunny/crossref_metadata_2025_split huggingface dataset:
Heavy metals and radionuclides concentrations in mosses from the region of Northern Greece
Authors: Betsou Ch. , Frontasyeva M. , Tsakiri E. , Hansman J. , Kazakis N. , Vasilev A. , Krmar M. , Ioannidou A. 
Published: February 2020

Mosses can be used as biomonitors for investigating the atmospheric deposition of radionuclides and heavy metals. They receive most of their nutrients directly from wet and dry deposition. During the 2015/2016 European moss survey, ninety-five samples of Hypnum cupressiformeHedw. were collected in Northern Greece. They were analyzed to the content of heavy metals using INAA. The concentrations of 137Cs,40K, 7Be and 210Pb radionuclides were determined using gamma spectrometry. Differences have been observed in the activity concentrations between mosses collected from ground surface, rocks, branches and near roots. Finally, a high sampling density was achieved, providing information for the elemental and radionuclides deposition from the atmosphere to terrestrial systems over the region of Northern Greece.
Nucleon numbers for nuclei with shape coexistence
Authors: Martinou Andriana , Bonatsos Dennis , Minkov N. , Mertzimekis T. J. , Assimakis I. E. , Peroulis S. , Sarantopoulou S. 
Published: February 2020

We consider two competing sets of nuclear magic numbers, namely the harmonic oscillator (HO) set (2, 8, 20, 40, 70, 112, 168, 240,...) and the set corresponding to the proxy-SU(3) scheme, possess- ing shells 0-2, 2-4, 6-12, 14-26, 28-48, 50-80, 82-124, 126-182, 184-256... The two sets provide 0+bands with different deformation and bandhead energies. We show that for proton (neutron) numbers starting from the regions where the quadrupole-quadrupole (Q · Q) interaction, as derived by the HO, becomes weaker than the one obtained in the proxy-SU(3) scheme, to the regions of HO shell clo- sure, the shape coexistence phenomenon may emerge. Our analysis suggests that the possibility for appearance of shape coexistence has to be investigated in the following regions of proton (neutron) numbers: 8, 18-20, 34-40, 60-70, 96-112, 146-168, 210-240,...
Production of C4+ (2s2p 3,1P) hollow states in collisions of 6-18 MeV C4+ (1s2, 1s2s 3S) mixed-state beams with gas targets
Authors: Laoutaris A. , Madesis I. , Benis E. P. , Zouros T. J. M. 
Published: February 2020

Normalized electron yields of the formation of 2s2p 3,1P states from the metastable states 1s2s 3,1S and from the ground state 1s21S were obtained in 6-18MeV C4+ collisions with H2, He, Ne and Ar gas targets. The method of zero-degree Auger projectile spectroscopy was used to detect electrons emitted in the Auger decay C4+ (2s2p 3,1P) → C5+ (1s) + e-with high resolution. These states are of particular importance in the detailed study of fundamental excitation mechanisms, i.e. electron-nucleus excitation, electron-electron excitation and electron-electron excitation with spin exchange. Currently, the role of the above mechanisms in the production of the 2s2p 3,1P states is investigated utilizing variable 1s2s 3S metastable fraction beams as a function of collision energy and target species. Our latest results are presented.
Overview of NCSRD Activation Experiments at JET
Authors: Vasilopoulou T. , Savva M. I. , Michelakaki I. , Triantou K. , Mergia K. , Stamatelatos I. E. , Messoloras S. , Contributors JET 
Published: February 2020

The intense collaborative effort for electricity generation through fusion is currently focused on the exploitation of the Joint European Torus (JET) as well as on the preparation of its successors ITER and DEMO. Within this frame, several experiments are carried out at JET aiming to study crucial aspects related to the construction and operation of ITER as well as to the design of future fusion power plants.Most important, a high-performance Deuterium-Tritium campaign is expected to take place at JET in 2020 providing unique neutron yields up to 1.7×1021 neutrons. This paper focuses on the participation of NCSRD fusion technology group in JET nuclear analysis and, in particular, on the implementation of activation experiments at JET and discusses the main achievements in the light of their significance for optimizing future fusion activities and studies.
Cross section measurement of the 191Ir(n,2n)190Ir reaction
Authors: Kalamara A. , Vlastou R. , Kokkoris M. , Patronis N. , Serris M. , Stamatopoulos A. , Chasapoglou S. , Lagoyannis A. , Harissopulos S. 
Published: February 2020

The cross section of the 191Ir(n,2n) reaction was experimentally determined relative to the 27Al(n,α)24Na reference reaction one, for incident neutron beam energies ranging from 15.3 to 20.9 MeV, by means of the activation technique. The quasi-monoenergetic neutron beams were produced at the 5.5 MV Tandem Accelerator ofNCSR "Demokritos" via the 3H(d,n)4He reaction. Following the irradiations the activity induced by the neutron beam at the targets and reference foils was measured by HPGe detectors. The cross sections for the population of the second isomeric state (m2) of 190Ir and the sum of the ground and isomeric states (g+m1+0.086 m2) were independently determined. Additionally, theoretical calculations of the above cross sections were carried out using the EMPIRE code. The details of these calculations concerning the optical model parameters, are described in the present work.
Study of the 234,236U(n,f) and 232Th(n,f) cross sections in the energy range between 14.8 and 19.2 MeV with Micromegas detectors
Authors: Chasapoglou S. , Michalopoulou V. , Stamatopoulos A. , Kalamara A. , Kokkoris M. , Vlastou R. , Lagoyannis A. , Eleme Z. , Patronis N. 
Published: February 2020

The design of fast nuclear reactors and accelerator driven systems is very strongly based on the accurate knowledge of neutron-induced fission cross sections on several actinides, such as 234,236U and 232Th. Specifically, these isotopes play an important role in the thorium cycle. Regarding (n,f) reactions on these isotopes (namely 234,236U(n,f)), few available discrepant cross-section datasets exist in literature in the energy range between 14-20 MeV, accompanied by relatively large errors, resulting to poor evaluations. In the present work, the study of the fission cross sections of the 234,236U and 232Th was possible with the use of quasi-monoenergetic neutron beams at 14.8, 15.2, 17.8 and 19.2 MeV at the 5.5 MV Tandem Van de Graaff accelerator of NCSR “Demokritos”, produced via the 3H(d,n)4He reaction. Moreover, a methodology is presented for the estimation of the parasitic neutrons present in the experimental area, for facilities with no complementary time-of-flight installation.
An upgrade of the materials irradiation facility with in-situ electrical resistivity measurement at the Demokritos TANDEM accelerator
Authors: Theodorou A. , Kotsina Z. , Axiotis M. , Apostolopoulos G. 
Published: February 2020

As an important part of fusion materials research, evaluation of radiation damage in fusion materials has been emphasized more than a half century. In order to improve our understanding of radiation damage in fusion materials, an upgrade has been performed of the materials irradiation facility IR2, which is located at the NCSR “Demokritos” 5.5 MV TANDEM accelerator. The upgraded facility allows irradiation at higher ion beam currents while ensuring that the target temperature remains below 10 K. It provides in-situ electrical resistivity measurements on several samples for real-time monitoring of radiation damage as well as in-situ post-irradiation annealing up to 300 K. The upgraded IR2 facility has been successfully employed in radiation damage and recovery studies of metallic materials with applications in fusion research.
Governança territorial: o que avançou com o Estatuto da Metrópole?
Authors: Rodrigues Maria Rita , Santos Angela Moulin Simões Penalva , Cruz Carlos Eduardo de Souza , Souza Carlos Humberto Francisco de , Wencelau Ethiene Vanila de Souza , Erthal Thiago Serpa 
Published: February 2020

O surgimento de novos arranjos territoriais como é o caso das regiões metropolitanas enseja o enfrentamento de determinados desafios que se colocam à consecução de uma gestão urbana sustentável e articulada. O advento do Estatuto da Metrópole, Lei nº 13.089/2015, tem sido identificado como um relevante avanço normativo a fim de induzir melhor a governança dos territórios não reconhecidos como entes federados. Nesta senda, o artigo se propõe a analisar os desdobramentos da entrada em vigor do Estatuto da Metrópole para a governança dos territórios metropolitanos. O presente trabalho é fruto do grupo de pesquisa institucional "Governança Territorial Urbana e Relações Interfederativas" realizado pelo Programa de Pós Graduação em Direito da UERJ no âmbito da linha de pesquisa Direito da Cidade. Os procedimentos de coleta e análise de dados se referem as capitais estaduais que são núcleos de regiões metropolitanas e demonstram entre outros fatores, a disseminação entre os especialistas sobre o tema governança territorial, e propõe um balanço acerca do avanço em direção às regras estabelecidas pelo Estatuto da Metrópole, com enfoque para a elaboração do Plano de Desenvolvimento Urbano Integrado e a agencia metropolitana de gestão territorial.
A polícia bioecnômica: o dispositivo policial no caso das unidades Paraná Seguro
Authors: Corrêa Murilo Duarte Costa , Souza Karoline Coelho de Andrade e 
Published: February 2020

Este artigo discute a polícia como dispositivo de poder bioeconômico. Para tanto, propõe analisar o caso das Unidades Paraná Seguro em Curitiba, Paraná, entre os anos de 2012 e 2015, com base em fontes documentais, investigando os limites analíticos dos policing studies, cuja inspiração weberiana resulta em uma compreensão da polícia sob seu aspecto exclusivamente repressivo. Uma análise mais detalhada das UPS – programa paranaense de policiamento comunitário que instrumentalizava a implementação de políticas socioeconômicas – descerrou uma forma de exercício de poder não-repressiva, mas constitutiva, como lógica do dispositivo policial. No caso analisado, a atuação da polícia articulava-se com a reconfiguração social e metropolitana do trabalho em Curitiba, implicando novos funcionamentos de poder, característicos do modelo biocapitalista e das sociedades de controle. Os achados empírico-documentais, avaliados na chave teórica da biopolítica foucaultiana, e de alguns de seus desdobramentos posteriores, permitiram redefinir a polícia como um dispositivo de poder bioeconômico, voltado para a gestão e a produção social da vida nas metrópoles.
Sensory processing and organisational abilities in children with inattentive-hyperactive behaviours
Authors: Iyer Pavithra R , Chavan Shashidhar Rao , Rege Sumita 
Published: February 2020

Background/Aims Sensory processing has been theorised to contribute to object and temporal organisation. Sensory processing and organisational abilities in children with inattention-hyperactivity was assessed, and investigated if there was a relationship between the two. Methods A community sample of children aged 9–12 years was categorised into inattentive-hyperactive (n=20) and non-inattentive-hyperactive groups (n=56) using the Vanderbilt Attention Deficit Hyperactivity Disorder Parent and Teacher Rating Scales. The Sensory Profile, Child Organisation Scale and Child Organisation Parent Perception Scale were used to collect additional data. Results Sensory processing and organisational abilities differed significantly between the groups. Object organisation correlated significantly with multisensory processing; temporal organisation failed to correlate with sensory processing. Conclusions Results suggest there is a need to screen children with informant-reported inattention-hyperactivity for sensory processing differences and organisational deficits. Sensory processing and object organisation may be associated; further research on potential factors underlying this association is needed.
<p><strong>Three new species of <em>Dinica </em>Gozmány, 1965 (Lepidoptera: Tineidae) from China</strong></p>
Authors: LI HOUHUN , XING MENGRAN , YANG LINLIN 
Published: February 2020

Three species of the genus Dinica Gozmány, 1965 from China are described as new: D. claviformis Li, sp. nov., D. apicipuncta Li, sp. nov. and D. bulbella Li, sp. nov. Photographs of adults and genitalia are given, along with a key to all the known species of Dinica in China. Key words: Tineoidea, Myrmecozelinae, taxonomy, new taxa
Reflections on Geostatistics and Stochastic Modeling
Authors: Myers D. E. 
Published: February 2020

Abstract
In recent years, geostatistics and stochastic modeling have made a tremendous impact on scientific investigation. This chapter describes the relationship between these two ideas, provides a historical perspective on their development, and discusses the ways in which they have evolved, both separately and in concert with each other. Important issues impacting future development are also addressed.
Modeling the Semivariogram
Authors: Gribov A. , Krivoruchko K. , Hoef J. M. Ver 
Published: February 2020

Abstract
This chapter proposes some new methods for computing empirical semivariograms and covariances and for fitting semivariogram and covariance models to empirical data. Grid-based empirical semivariograms and covariances are described, in which the grid values are smoothed using triangular kernels. A model-fitting procedure using modified iterative weighted least squares is presented. This algorithm is shown to be reliable for a wide range of data types and conditions, and its implementation in commercial software is discussed. Comparisons to restricted maximum likelihood estimation are also discussed.
An Efficient Approach for Quantifying the Uncertainty in
Groundwater-model Predictions
Authors: Kelley V. A. , Mishra S. 
Published: February 2020

Abstract
Distributed-parameter models are increasingly being used to incorporate hydrogeologic uncertainty in predictive analyses of groundwater flow and contaminant transport. Geostatistical techniques have proven to be useful for generating multiple equiprobable realizations of subsurface parameters that are consistent with the available data. However, computational constraints commonly preclude detailed transport calculations with all realizations in a Monte Carlo simulation framework for quantifying the uncertainty in model predictions. As a result, several studies have been performed investigating techniques to rank realizations of a stochastic reservoir or groundwater aquifer model. These techniques share the common goal of trying to develop a surrogate measure that will preserve the quantiles of the desired performance measure. This chapter proposes a technique to both rank and weight realizations through the use of a surrogate traveltime measure and to then accurately reproduce the performance-measure statistics with only a few forward simulations. The methodology is demonstrated using a field example from the Waste Isolation Pilot Plant site in New Mexico that is well documented in the groundwater literature.
Fractured Continuum Approach to Stochastic Permeability
Modeling
Authors: McKenna S. A. , Reeves P. C. 
Published: February 2020

Abstract
A new kind of fracture-permeability model called the fractured continuum model (FCM) is presented that incorporates the advantages of discrete fracture network models and the processing speed of effective continuum representations of fracture permeability. Observations of fracture orientation, length, frequency, and transmissivity from boreholes and outcrops are used as input to the FCM approach. Geostatistical realizations of fracture connectivity, represented by the coordination number of a local percolation network, and fracture frequency are combined with object-based simulations of high- and low-permeability classes in the model domain. At each location, these three spatially variable properties are combined into an effective grid-block permeability using an approximation based on the effective medium theory. The resulting realizations of fracture permeability, containing greater than 106 elements, are used as input to a single-phase flow model. A parallel computer platform coupled with a unique groundwater flow code is used to efficiently solve steady-state pressure fields on multiple realizations. The ability to solve many realizations in a short amount of time allows for the evaluation of the effects of two different conceptual models of fracture permeability on particle traveltimes.
Full Integration of Seismic Data into Geostatistical Reservoir
Modeling
Authors: van Riel P. , Mesdag P. , Debeye H. , Sams M. 
Published: February 2020

Abstract
Seismic reflection amplitude data are increasingly used in reservoir modeling to provide information on changes in earth properties away from well locations. In geostatistical reservoir modeling, the most common application is to use seismic data as background data in some form of comodeling. Seismic data image reflectors and not earth layer properties. Therefore, prior to use in comodeling, seismic data must first be transformed into an earth layer property. Typically, the transform is to acoustic impedance using an appropriate seismic inversion method.
Seismic inversion methods generate results that are generally band limited in nature, resulting in limits to vertical resolution. The vertical resolution achieved can be an order of magnitude below the vertical model resolution required from geostatistical reservoir modeling, which is in the order of well-log resolution. Hence, in using seismic data, geostatistical modelers encounter a problem of downscaling, not the more commonly encountered upscaling problem. This difference in scale introduces scatter between the primary data with well-log order resolution and the secondary seismically derived rock property data used in the comodeling. As a result, to preserve vertical heterogeneity, only limited use of the secondary data can be made in comodeling procedures. This results in models that only partially fit the seismic data, i.e., only limited use is made of the seismic information. If the secondary data are more strongly imposed, the fit to the seismic data improves, but the required vertical heterogeneity is not preserved. The inability to overcome this difference in scale issue, therefore, limits the value of the application of comodeling methods to integrate seismic data into reservoir models.
One class of geostatistical methods that overcomes this limitation relies on iterative geostatistical modeling. In these methods, referred to as geostatistical seismic inversion, the iterative modeling process is conditioned such that the final models generated closely match the seismic data while maintaining the required vertical heterogeneity. The application of these methods is computationally expensive relative to comodeling methods but is now practical for large models on today's desktop hardware. Relative to comodeling, geostatistical seismic inversion methods make full use of the information carried in the seismic data, resulting in a significant reduction in model uncertainty away from well control.
Three-dimensional Seismic Inversion and Geostatistical Reservoir
Modeling of the Rotliegend Gas Field
Authors: Shrestha R. K. , Faruqi S. , Boeckmann M. , Wang M.-K. 
Published: February 2020

Abstract
This chapter describes a study of the Rotliegend gas field in Germany in which impedance-constrained facies and property models were constructed to reevaluate the field and guide future development.
Three-dimensional (3-D) stochastic seismic inversion produces a highresolution acoustic impedance volume by integrating well data with fine vertical sampling and seismic data with dense areal sampling. This acoustic impedance volume can be used as soft data in geostatistical reservoir property modeling. The dense areal sampling in the 3-D seismic grid provides valuable information in interwell areas. Impedance data are particularly useful where well data are sparse.
Brazos A-105 D-Sand Reservoir Modeling by Integration of Seismic
Elastic Inversion Results with Geostatistical Techniques
Authors: Xu W. , Dooley P. , Wrolstad K. , Domingue K. , Kramer D. , Vo D. T. 
Published: February 2020

Abstract
An integrated reservoir modeling study of the Bigenerina humblei (Big Hum) Miocene D-sand at Brazos A-105 field, offshore Texas, was conducted to predict the lateral extent of the reservoir, to build a porosity model for use in flow simulation and reserve evaluation, and to assess the uncertainty of the reserve estimation. Several geostatistical techniques for integrating well-log porosity with quantitative average porosity derived from a forward elastic model-based inversion method for three-dimensional seismic data were applied in this reservoir modeling study. Elastic modeling was necessary to predict the correct porosity-amplitude relationship for this reservoir because it is a class 2 type amplitude-vs.-offset reflection. The results of the study showed that if a reservoir is seismically resolved and properly imaged, elastic model-based inversion of the type employed can be used in conjunction with geostatistical methods to obtain a more complete reservoir description. These techniques were determined to have direct application to reservoir-flow modeling and hydrocarbon reserve volume estimation.
Process-based Knowledge Management
Authors: Herweijer J. C. , Yarus J. M. , Suana M. J. V. 
Published: February 2020

Abstract
This chapter presents an overview of current knowledge management practices in upstream oil and gas exploration and production, specifically for multidisciplinary project teams working with spatial modeling techniques. A process-based knowledge management methodology is defined that allows for continuous work on complex multiscenario models in a consistent, flexible, and shared manner under conditions where data are less than optimal, modeling techniques are poorly understood, and staffing assignments change before project completion.
Deep-Water Sandstones, Brushy Canyon Formation, West Texas
Authors: Beaubouef R. T. , Rossen C. R. , Zelt F. B. , Sullivan M. D. , Mohrig D. C. , Jennette D. C. , Bellian J. A. , Friedman S. J. , Lovell R. W. , Shannon D. S. 
Published: February 2020

Abstract
Exceptional oblique-dip exposures of submarine fan complexes of the Brushy Canyon Fm. allow reconstruction of channel geometries and reservoir architecture from the slope to the basin floor. The Brushy Canyon conslsts of 1,500 ft. of basinally restricted sandstones and siltstones that onlap older carbonate slope deposits at the NW margin of the Delaware Basin. This succession represents a lowstand qequence set comprised of lugher frequency sequences that were deposited in the basin during subaerial exposure and bypass of the adjacent carbonate shelf. Progradational sequence stacking patterns reflect changing position and character of the slope as it evolved from a relict, carbonate margin, to a constructional, siltstone-dominated slope. Lowstand fan systems tracts consist of sharp-based, laterally extensive, sand-prone basin floor deposits and large, sand-filled channels encased in siltstones on the slope. The abandonment phase of each sequence (lowstand wedge-transgressive systems tract) consists of basinward-thinning siltstones that drape the basin floor fans. The slope-tobasin distnbution of lithofacies is attributed to a three stage cycle of: 1) erosion, mass wasting, and sand bypass on the slope with concurrent deposition from sand-rich flows on the basin floor, 2) progressive backfilling of feeder channels with variable fill during waning stages of deposition, and 3) cessation of sand delivery to the basin and deposition of laterally-extensive siltstone wedges. Paleocurrents and channel distributions indicate SE-E sediment transport from the NW basin margin via closely spaced point sources.