bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydraulic Fracturing as a Development Strategy - Successful Case Histories from the Congo Basin: A Matter of Technology and Risk Attitude
Authors: Perfetto R. , Tealdi L. 
Published: July 2013

Abstract
Testing novel technologies, developing abandoned reservoirs and rejuvenating mature fields require top-notch technical preparation and fit for purpose risk exposure attitude. Even in case of the commercial availability of the right technology at the right time, studying a technological pilot and actually executing it highly depends on the risk exposure attitude of the management which plays a crucial role.
The history of Hydraulic Fracturing activity in Congo goes up to 2007; with the background of producers with very low or nil performance and the high costs of fracking offshore for the first time in the country, the risk of investment and technological failure was elevated.
At the time of the first pilot test in K-field offshore, the eni Congo management was not so interested in the immediate gains. The management was betting on eventual success of the technology, which would start a new era for the development of low permeability reservoirs in Congo and thus making a huge impact on the future of the company production and reserves.
This papers describes the lessons learnt in 5 years of frac operations in Congo with over 130 diverse frac operations (performed on different reservoir of diverse permeability ranges, green to brown fields, onshore to offshore, conventional single stage to multistage fracturing, acid and proppant frac with water base and oil base frac fluids). This paper would also serve as potential reference for all Operations Managers who are willing to optimize their assets value by means of Hydraulic Fracturing but face difficulties in winning mental barriers towards novel technologies inside or outside their companies.
Estimation of Transient Drainage Discharge from Subsurface Pipe Drainage System in City Park Next to Mseno Dam (Czech Republic)
Authors: Stibinger Jakub 
Published: July 2013

Abstract The aim of this study has been to demonstrate the way of determination of drainage discharge by the method of De Zeeuw-Hellinga in the transient drainage flow conditions. For comparison and verification of numerical experiment of calculation of drainage discharge by equation of De Zeeuw-Hellinga with measured daily values of drainage discharge was selected subsurface pipe drainage system in experimental drained area, placed in the local city park next to the Mseno Dam, in the city of Jablonec nad Nisou, Czech Republic. The results showed a good conformity between calculations and measured data, the differences between De Zeeuw-Hellinga’s approximations and measured daily values of drainage discharge fluctuated from 0.6 (mm.day-1) to zero, and confirmed that the De Zeeuw-Hellinga’s formula is a suitable tool for approximation of the drainage discharge in the transient flow conditions. It was confirmed again that De Zeeuw-Hellinga theory is also applicable for the shallow subsurface pipe drainage system.
Influence of particle size on physical and sensory attributes of mango pulp powder
Authors: Sharma M. , Kadam D.M. , Chadha S. , Wilson R.A. , Gupta R.K. 
Published: July 2013

Abstract
The present investigation was aimed to observe the effect of particle size on physical, sensory and thermal properties of foam-mat dried mango pulp powder. Mango pulp of Dussehri variety was foam-mat dried using 3% egg white at 65ºC. Dried foam-mats were pulverized and passed through a sieve shaker for obtaining three grades of powder with 50, 60, and 85 mesh size sieves. The particle size of these samples measured using laser diffraction particle size analyzer ranged from 191.26 to 296.19 μm. The data was analysed statistically using ANOVA of SAS. There was a linear increase in lightness (‘L’ value) with a decrease in particle size, however, ‘a’ value decreased with a decrease in particle size, indicating the decrease in redness. An increase in bulk density and decrease in water solubility index and water absorption index % were observed with a decrease in particle size. Particle size had a significant effect on sensory parameters. Particle size in the range of 258.01 to 264.60μmwas found most acceptable with respect to sensory characteristics. This finding can be exploited for various commercial applicationswhere powder quality is dependent on the particle size and has foremost priority for end users.
A Model for the Identification of Areas Favourable for the Development of Tourism: A Case Study of the Šumava Mts. and South Bohemia Tourist Regions (Czech Republic)
Authors: Navrátil Josef , Pícha Kamil , Martinát Stanislav , Knotek Jaroslav , Kučera Tomáš , Balounová Zuzana , White Baravalle Gilliam Vivian L. , Švec Roman , Rajchard Josef 
Published: July 2013

Abstract
A basis for the identification of potential tourist development areas was defined as a combined use of the model of area load by visitors, the territorially-located database of tourist attractions, and the perception of their attractiveness by visitors. A distinctive inequality was identified in the area load and the distribution of tourist attractions. The areas of development were determined on the basis of a difference between the relative attendance and the relative attractiveness of the partial territorial units of a regular hexagonal network, sized approximately 3 km2, with a concurrent requirement of above-average total attractiveness
Using Multi-Scale Spatial and Statistical Analysis to Assess the Effects of Brownfield Redevelopment on Surrounding Residential Property Values in Milwaukee County, USA
Authors: Sun Wenjie , Jones Brendon 
Published: July 2013

Abstract
Brownfield redevelopment has gained support in the U.S. as an essential ingredient of urban revitalization. Assessing the effects of such projects is important as government budgets tighten recently. Through multi-scale spatial and statistical analysis, this study shows the spatial patterns of residential property values and their changes, and investigates linkages to the presence of different types and sizes of nearby brownfield redevelopment projects, as opposed to neighborhood demographics and property characteristics. While the results of this study suggest brownfield redevelopment does play a positive role on the surrounding residential property values in general, there are quite different statistical significances found at the two levels of analysis and the type of redevelopment found to determine the direction of this effect.
Estimated collective effective dose to the population from nuclear medicine examinations in Slovenia
Authors: Skrk Damijan , Zontar Dejan 
Published: July 2013

Abstract
Background. A national survey of patient exposure from nuclear medicine diagnostic procedures was performed by Slovenian Radiation Protection Administration in order to estimate their contribution to the collective effective dose to the population of Slovenia.
Methods. A set of 36 examinations with the highest contributions to the collective effective dose was identified. Data about frequencies and average administered activities of radioisotopes used for those examinations were collected from all nuclear medicine departments in Slovenia. A collective effective dose to the population and an effective dose per capita were estimated from the collected data using dose conversion factors.
Results. The total collective effective dose to the population from nuclear medicine diagnostic procedures in 2011 was estimated to 102 manSv, giving an effective dose per capita of 0.05 mSv.
Conclusions. The comparison of results of this study with studies performed in other countries indicates that the nuclear medicine providers in Slovenia are well aware of the importance of patient protection measures and of optimisation of procedures.
Electromagnetic tunneling through a three-layer asymmetric medium containing epsilon-negative slabs
Authors: Yang Chao , Zhao Hui 
Published: July 2013

Abstract
With the transfer-matrix method, conditions of extraordinary electromagnetic resonant tunneling through all combinations of three-layer nonmagnetic (µr = 1) media containing epsilon-negative (ENG) and doublepositive (DPS) slabs were explored. We show that abnormal phenomena can occur in the ENG-DPS-ENG structure, without any restriction on the permittivity of the DPS layer. Changes of transmittance as a function of frequency and incidence angle for a dispersive, lossy model are also calculated, and the results demonstrate the possibility of exhibition this counterintuitive tunneling phenomenon in the DPS-ENG-DPS structure within a wide range of incidence angles.
Measuring Systemic Risk in the Polish Banking System by Means of the Risk-Based Balance Sheets Method
Authors: Karkowska Renata 
Published: July 2013

Abstract
The complex connections, spillovers and feedbacks of the global financial crisis remind how important it is to improve the analysis of risk modeling. This article introduces a new framework for mitigating systemic risk by using a risk-adjusted balance sheet approach. In this regard, the analysis of individual banks in Poland shows potential risk which could threaten all the financial system. Traditional banking models do not adequately measure risk position of financial institutions and cannot be used to understand risk within and between balance sheets in the financial sector. A fundamental subject is that accounting balance sheets do not indicate risk exposures, which are forward-looking. The paper concludes new directions for measuring systemic risk by using Merton’s model. It shows how risk management tools can be applied in new ways to measure and analyze systemic risk in the Polish banking system.
Visibility And Geometry Of Galileo Satellites Constellation During Initial Operation Capability
Authors: Januszewski Jacek 
Published: July 2013

Abstract
The European Space Agency (ESA) confirmed that it plans to declare an Initial Operational Capability (IOC) once a constellation of 18 satellites is achieved in 2014 and after few Soyuz and Ariane launches Full Operational Capability (FOC) once a constellation of 26 satellites next year or later. In the paper are presented the distribution of the number of satellites visible by the observer and the distribution of GDOP coefficient values both for different masking elevation angles (Hmin) at different observer’s latitudes for three constellations, with 18, 22 and 26 satellites, the distribution of satellite azimuths in open area and the percentage of satellites visible above given angle. Additionally for latitude of Poland (zone 50-60°) No Fix (in per cent) and the detailed distribution of GDOP values for six angles Hmin for all these constellations and the results of other calculations are showed. Finally the results concern the possibility of the positioning and its accuracy for different numbers of Galileo satellites at different observer’s latitudes
Using High-Density Bathymetric Data for the Production of Precise ENC
Authors: Stateczny Andrzej , Włodarczyk-Sielicka Marta , Zaniewicz Grzegorz 
Published: July 2013

Abstract
Due to an increasing trend of replacing traditional paper navigational charts with electronic ones, requirements for the creation of new ENC have been steadily growing. One example is the precise electronic navigational chart, which is based on accurate mapping of topographic and hydrographic elements. Information about depth of the waters contained on the charts are crucial for the safety of navigation. During the production of precise navigational charts, bathymetric information acquired by a multi-beam sonar system (or swath-bathymetry interferometric system) is used. A multi-beam sonar system emits several signal beams from a single transducer in different directions, which allows to cover a hundred percent of the survey area. The authors of the article carried out an analysis of bathymetric data in terms of differences in their preparation for the production of precise ENC.
Inertial Navigation Position and Orientation Estimation with Occasional Galileo Satellite Position Fixes and Stereo Camera Measurements
Authors: Vepa Ranjan , Petrakou Kanella 
Published: July 2013

Abstract
In this paper an adaptive unscented Kalman filter based mixing filter is used to integrate kinematic satellite aided inertial navigation system with vision based measurements of five representative points on a runway in a modern receiver that incorporates carrier phase smoothing and ambiguity resolution. Using high resolution multiple stereo camera based measurements of five points on the runway, in addition to a set of typical pseudo-range estimates that can be obtained from a satellite navigation system such GPS or GNSS equipped with a carrier phase receiver, the feasibility of generating high precision estimates of the typical outputs from an inertial navigation system is demonstrated. The methodology may be developed as a stand-alone system or employed in conjunction with a traditional strapped down inertial navigation systems for purposes of initial alignment. Moreover the feasibility of employing adaptive mixing was explored as it facilitates the possibility of using the system for developing a vision based automatic landing controller.
Synergetic Concept of Algorithms Autonomous Inertial Navigation Systems
Authors: Yakushin Sergey 
Published: July 2013

Abstract
Errors of INS output parameters lead to a positive feedback effect of errors and eventually to an even more dramatic increase in system errors. To reduce the impact of this problem on the error output parameters of INS, in this paper, we propose and study a new concept of constructing algorithms for autonomous INS, which is called as synergetic concept. In the paper the synergetic concept of inertial system’s algorithm is presented and investigated by implementing its into strapdown inertial navigation system (SDINS).
Des recherches pour éclairer le recouvrement des pensions alimentaires
Authors: Guibert Bernard , Renaudat Evelyne 
Published: July 2013

Depuis la prise en charge par les CAF du recouvrement des pensions alimentaires, fin 1984, une série d'enquêtes a permis de mieux connaître la population des séparés, divorcés, à qui leurs "ex" étaient redevables d'obligations alimentaires.
Lors d'un colloque organisé par l'AISS, Bernard Guibert, responsable de la branche Recherches et prévisions à la CNAF , et Evelyne Renaudat ont exposé pour la délégation française la politique de concertation menée pour ces études avec d'autres organismes de recherche publics ainsi que les apports, enseignements et exploitations qui ont été tirés des résultats.
Droit et nouvelles formes de la vie familiale
Authors: Blanc Catherine 
Published: July 2013

Le titre "Transformations des structures familiales" désigne l'un des cinq programmes de recherche retenus par le Conseil d'Administration de la C.N.A.F. , lors de sa séance du 10 juillet 1984.
Ce programme qui a été à l 'origine de deux appels d'offres s'est réalisé en deux étapes.
La première a consisté à développer et préciser les investigations de recherche sur un sous-ensemble significatif : les familles dites monoparentales .
La seconde étape de ce programme ne limite plus le champ de recherche à certaines, importantes certes, des différentes formes de la vie familiale dans la société d'aujourd'hui. Mais elle invite les chercheurs à se pencher plus particulièrement sur le rapport entre les transformations de ces dernières et les importantes modifications du droit civil, social et fiscal qui les accompagnent et les codifient de manière plus ou moins formelle. D'où le titre d'un nouvel appel d'offres : "Droit et nouvelles formes de la vie familiale" .
Une carrière en famille : masculin pluriel, féminin singulier
Authors: Renaudat Evelyne 
Published: July 2013

Cette enquête menée par Chantai Nicole (Laboratoire de sociologie du travail du CNAM) , dans le cadre de l'appel de propositions de recherches "Activité féminine - Vie familiale" , lancé par la CNAF en janvier 1986, a été réalisée auprès de 20 cadres (10 hommes et 10 femmes) qui travaillent dans la même entreprise (une mutuelle d' assurances de Niort) et auprès de leur conjoint(e) .
Elle se propose de comprendre l'évolution des modèles familiaux à travers l'interaction des stratégies professionnelles des hommes et des femmes, au sein des couples.
La population des familles allocataires du régime général
Authors: Escande Marie-Thérèse 
Published: July 2013

Fin 1989, 7,3 millions d'allocataires étaient gérés par les Caisses d allocations familiales.
Cet accroissement, de 4,6 % par rapport à 1988, est principalement dû au RMI (+2,5points) et à l'APL(+ 2,0 points).
Recettes et dépenses de la branche famille en 1989
Authors: Boissières Catherine 
Published: July 2013

En 1989, les recettes de la branche famille ont atteint 184 milliards de francs, les dépenses 180,5 milliards. L'excédent (3,5 milliards de francs) représente 1 ,9 % des recettes. Les exercices 1988-1989 sont caractérisés par la reprise de la progression des cotisations (respectivement -h 2,9 % et + 2,2 % en francs constants) du fait de la croissance économique, alors que l'évolution des prestations en francs constants n'est que de + 1,8% en 1988, -0,5% en 1989.
Les chiffres présentés couvrent les recettes et les dépenses de l 'ensemble des régimes de prestations familiales, en métropole et dans les DOM, y compris les exploitants agricoles depuis 1983 et l'allocation aux adultes handicapés. Les dépenses relatives à l 'aide personnalisée au logement, à l 'allocation logement sociale et au revenu minimum d 'insertion ne sont pas retracées dans les trois fonds gérés par la CNAF (fonds nationaux des prestations familiales, d'action sociale, de la gestion administrative).
Des politiques vieillesse ségrégatives à une prestation universelle d'aide à l'autonomie
Authors: Henrard Jean-Claude 
Published: July 2013

La création d’un nouveau droit social universel de compensation de la perte d’autonomie avec un système de prestations médicosociales au long cours est aujourd’hui nécessaire pour corriger 50 ans de politique vieillesse d’action sociale qui ont abouti à un enfermement des personnes âgées de 60 ans et plus ayant perdu leur autonomie dans un dispositif ségrégatif peu efficace et injuste par rapport aux personnes handicapées âgées de moins de 60 ans.
Drogues illégales et société : expériences mexicaines
Authors: Astorga Luis 
Published: July 2013

Le sociologue Luis Astorga esquisse dans cet entretien les caractéristiques et les évolutions des organisations de trafiquants. Il met notamment en avant l’importance du territoire : les grands groupes se développent sur un terreau d’origine mais contrôlent aussi des villes frontalières, principaux points de passage frontaliers des marchandises illicites vers les Etats-Unis. Après avoir décrit la profondeur de l’ancrage de ces trafics dans la société mexicaine et leur développement à l’ombre du pouvoir, il souligne l’impréparation tant du gouvernement divisé que des différents groupes sociaux (notamment la presse et les élites) pour faire face aux défis du trafic de drogue, au premier rang desquels la violence.
Readings of the Platform Sūtra. Edited by Morten Schlütter and Stephen F. Teiser; and The Platform Sūtra of the Sixth Patriarch: The Text of the Tun-Huang Manuscript. Translated by Philip B. Yampolsky with a new foreword by Morten Schlütter
Authors: Heller Natash 
Published: July 2013

Readings of the Platform Sūtra. Edited by Morten Schlütter and Stephen F. Teiser. New York: Columbia University Press, 2012. Pp. ix + 220. $27 (paper).
The Platform Sūtra of the Sixth Patriarch: The Text of the Tun-Huang Manuscript. Translated by Philip B. Yampolsky with a new foreword by Morten Schlütter. New York: Columbia University Press, 2012. Pp. xvi + 220 + 30 (paginated in Chinese). $32 (paper).
4‐Hydroxyphenylpyruvatdioxygenase‐Inhibitoren plus Safener: Lösungen für eine moderne und nachhaltige Landwirtschaft
Authors: Ahrens Hartmut , Lange Gudrun , Müller Thomas , Rosinger Chris , Willms Lothar , van Almsick Andreas 
Published: July 2013

AbstractHPPD‐Inhibitoren verhindern die Bildung der pflanzlichen Carotinoidpigmente, was wiederum zum Chlorophyllabbau führt. Dieser “Bleaching”‐Wirkmechanismus kommt bei Produkten zur Kontrolle von Schadpflanzen in unterschiedlichen Kulturen wie Reis, Mais und Getreide zum Einsatz. In Kombination mit einem geeigneten Safener lässt sich das Potential dieser Verbindungsklasse bei der selektiven Bekämpfung der wichtigsten Schadpflanzen, einschließlich der rasch zunehmenden Fälle von Resistenzen gegen andere wichtige Herbizidklassen, voll ausschöpfen.
Cyclotides as grafting frameworks for protein engineering and drug design applications
Authors: Poth Aaron G. , Chan Lai Y. , Craik David J. 
Published: July 2013

ABSTRACTCyclotides are a family of naturally occurring backbone‐cyclized macrocyclic mini‐proteins from plants that have a knotted trio of intramolecular disulfide bonds. Their structural features imbue cyclotides with extraordinary stability against degradation at elevated temperatures or in the presence of proteolytic enzymes. The plasticity of their intracysteine loop sequences is exemplified by the more than 250 natural cyclotides sequenced to date, and this tolerance to sequence variation, along with their diverse bioactivities, underpins the suitability of the cyclic cystine knot motif as a valuable drug design scaffold and research tool for protein engineering studies. Here, we review the recent literature on applications of cyclotides for the stabilization of peptide epitopes and related protein engineering studies. Possible future directions in this field are also described. © 2013 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 100: 480–491, 2013.
Recombinant expression of backbone‐cyclized polypeptides
Authors: Borra Radhika , Camarero Julio A. 
Published: July 2013

ABSTRACTHere we review the different biochemical approaches available for the expression of backbone‐cyclized polypeptides, including peptides and proteins. These methods allow for the production of circular polypeptides either in vitro or in vivo using standard recombinant DNA expression techniques. Polypeptide circularization provides a valuable tool to study the effects of topology on protein stability and folding kinetics. Furthermore, having biosynthetic access to backbone‐cyclized polypeptides makes the production of genetically encoded libraries of cyclic polypeptides possible. The production of such libraries, which was previously restricted to the domain of synthetic chemistry, now offers biologists access to highly diverse and stable molecular libraries that can be screened using high‐throughput methods for the rapid selection of novel cyclic polypeptide sequences with new biological activities. © 2013 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 100: 502–509, 2013.
An Enantiospecific Polyene Cyclization Initiated by an Enantiomerically Pure Bromonium Ion
Authors: Braddock D. Christopher , Marklew Jared S. , Foote Kevin M. , White Andrew J. P. 
Published: July 2013

ABSTRACTDimethylaluminum triflate‐mediated activation of tetrafluorobenzoates of enantiomerically pure bromohydrins results in enantiospecific polyene cyclizations. The initiation of cyclization by enantiomerically pure bromonium ions and subsequent propagation is not subject to catastrophic erosion of enantiomeric purity by any intramolecular or intermolecular bromonium ion‐to‐alkene transfer. Chirality 25:692–700, 2013. © 2013 Wiley Periodicals, Inc.