bluuebunny/crossref_metadata_2025_split huggingface dataset:
Remediation of Soil Contamination with Heavy Metals by Using Zeolite and Humic Acid Additives
Authors: Burlakovs J. , Klavins M. , Karklina A. 
Published: May 2013

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Soil remediation at contaminated sites very often needs customized approach, because of the different content of pollutants. Various technologies from simple soil excavation and transporting to hazardous waste landfills to different kinds of remediation by vitrification and the use of additives can be used for the treatment of soil. A series of remediation experiments using zeolites and humic acids were applied to soil contaminated with copper. Remediation can be performed with easily available additive materials of natural origin found near the place of application, in order to diminish the leaching of contaminants. Soils contaminated and spiked with copper were mixed with additives, and ion selective electrode potentiometry was used in order to establish the stability constants of humic-metal complexes. Thus the study provides an opportunity to gain information on the fate of copper variously mixed with potential remediation agents zeolites and humic acids - as additives to contaminated soils.
Alternative Fuels for Marine Applications
Authors: Kołwzan K. , Narewski M. 
Published: May 2013

This paper outlines the growing number of shipboard applications of new, alternative fuels such as: low sulphur fuels, gas fuels and biofuels in the global maritime transport. Advantages of the new fuels, their functionnal basis, is limited to applicability and current development issues have been shown, including the analysis of cost predictions.
All types of marine fuels are subject of certain quality, documentation and survey procedures. EU policy is an example where international standards are being transferred to national level, and where marine standards result in mirror action in inland waterway air pollution prevention measures.
Morphometric Study of Connective Tissue in the Human Pituitary during Aging Process
Authors: Pavlović Miljana , Jovanović Ivan , Pavlović Snežana , Stojanović Vesna , Živković Vladimir , Bakić Mirjana , Kundalić Braca , Antić Vladimir 
Published: May 2013

SUMMARY
The aim of the research was to quantify the connective tissue and blood vessels in the aging human pituitary, using the morphometric methods.
The material contained 29 pituitary tissues from cadavers of both sexes (14 females and 15 males), aged 33-95 years. The pituitary tissue was processed by standard histological procedure and stained by Mallory trichrome method. Histological samples were analyzed using a light microscope with magnification of 400x. Morphometric analysis was performed on digital pictures with the resolution of 1.3 megapixels, at 40 pituitary visual fields of each case examined. Fovea Pro 4 system was used for the analysis. Above the digital images of each field of view, there was inserted a simple network test system. Using this programme, there were determined bulk densities of connective tissue and blood vessels in the examined cases. The results were statistically analyzed using the package NCSS-PASS 2007.
Correlation analysis showed that the bulk density of connective tissue statistically significantly increased during aging. The average bulk density of blood vessels in the pituitary manifested statistically significant decrease during the aging process. These results were confirmed by the linear regression analysis. The average bulk density of the connective tissue, as well as the average bulk density of blood vessels in the pituitary cases, did not differ significantly among males and females.
The process of aging is followed by the proliferation of the connective tissue and fibrosis of the pituitary, which is accompanied by the reduction of its vascular network.
Contemporary migration of Poles to Lebanon and Egypt
Authors: Kałaska Maciej , Suchcicka Maria 
Published: May 2013

Abstract
The article describes the contemporary Polish diaspora in Lebanon and Egypt. The similarities and differences between the two communities are examined in detail. The contemporary phases of the migration of Poles to Lebanon and Egypt are listed and described, the Polish diaspora is mapped and its typology in these countries is outlined. In addition, the issues faced by mixed marriages are described as are the difficulties Poles have in adaptating to life in countries with different cultures.
Description and course of backpacking trips depending on the nationality of the tourists
Authors: Brzózka Małgorzata 
Published: May 2013

Abstract
The following article discusses the differences between backpackers and mass tourists. Its objective is to describe the nature of backpacking trips and to present the dependencies between the course of a trip, the reasons for taking the trip and the nationality of the respondents. The study is based on the results of a survey carried out among backpackers from Israel, Japan, Poland and Germany. Well-defined differences were revealed by the responses given by the Israeli and Japanese backpackers.
Verification of forecasts of periodic changes
in the climate of Warsaw in the period 1779-2010
Authors: Boryczka Jerzy , Stopa-Boryczka Maria , Kossowska-Cezak Urszula , Wawer Jolanta 
Published: May 2013

Abstract
The air temperatures recorded at Warsaw-Okęcie in 1951-2010 were
compared with forecasts for the period 1980-2010 and 1991-2010, i.e. 31
and 20 years ahead. Accurate predictions of air temperatures in Warsaw
in 1980-2010 were calculated using the cycles identified by applying the
sinusoidal regression method to a series of monitoring results obtained in
Warsaw between 1779 and 1979. The high accuracy of these forecasts
is the result of a similar progression of measured and forecast values
over a number of years. The prediction of climate change in the Northern
Hemisphere for example, caused by interference of long solar radiation
cycles as well as variations in the concentrations of the δ18O oxygen
isotope in the Arctic ice cores, requires a larger series of data points.
Policies on intergroup relations
in Central and East European cities:
a comparative analysis of Budapest, Prague, Wrocław and Tallinn
Authors: Kohlbacher Josef , Matusz Protasiewicz Patrycja 
Published: May 2013

Abstract
This article explores the differences in the understanding of ‘intergroup
relations’ and measures underaken in the area of intercultural policies in
four Central and East European (CEE) cities: Budapest, Prague, Wrocław
and Tallinn.
The analysis is based on interviews and field research carried out in 2008
in these cities in cooperation with local scientific experts, representatives
of the ethnic communities and officials of the Municipalities as part of
the Eurofound research project CLIP1. It explores the national and local
political frameworks for intergroup policy and the target groups for such
strategies and policies.
The main aim of this article is to carry out a comparative analysis of four
cities from the CEE countries in order to indicate the similarities and
differences in the understanding of intergroup relations. It investigates
the type of actors involved in this process and whether their actions are
catalysed from the top-down or bottom–up.
A generalized form of Ekeland’s variational principle
Authors: Farkas Csaba 
Published: May 2013

Abstract
In this paper we prove a generalized version of the Ekeland variational principle, which is a common generalization of Zhong variational principle and Borwein Preiss Variational principle. Therefore in a particular case, from this variational principle we get a Zhong type variational principle, and a Borwein-Preiss variational principle. As a consequence, we obtain a Caristi type fixed point theorem.
Jessen's functional, its properties and applications
Authors: Lovričević Neda , Pečarić Josip , Krnić Mario 
Published: May 2013

AbstractIn this paper we consider Jessen's functional, defined by means of a positive isotonic linear functional, and investigate its properties. Derived results are then applied to weighted generalized power means, which yields extensions of some recent results, known from the literature. In particular, we obtain the whole series of refinements and converses of numerous classical inequalities such as the arithmetic-geometric mean inequality, Young's inequality and Hölder's inequality
Stability of generalized Newton difference equations
Authors: Wang Zhihua , Shi Yong-Guo 
Published: May 2013

AbstractIn the paper we discuss a stability in the sense of the generalized Hyers-Ulam-Rassias for functional equations Δn(p, c)φ(x) = h(x), which is called generalized Newton difference equations, and give a sufficient condition of the generalized Hyers-Ulam-Rassias stability. As corollaries, we obtain the generalized Hyers-Ulam-Rassias stability for generalized forms of square root spirals functional equations and general Newton functional equations for logarithmic spirals.
Strong convergence of a hybrid method for pseudomonotone variational inequalities and fixed point problems
Authors: Yu Xin , Yao Yonghong , Liou Yeong-Cheng 
Published: May 2013

AbstractIn this paper, we suggest a hybrid method for finding a common element of the set of solution of a pseudomonotone, Lipschitz-continuous variational inequality problem and the set of common fixed points of an infinite family of nonexpansive mappings. The proposed iterative method combines two well-known methods: extragradient method and CQ method. We derive a necessary and sufficient condition for the strong convergence of the sequences generated by the proposed method.
Riemannian foliations and the kernel of the basic Dirac operator
Authors: Slesar Vladimir 
Published: May 2013

Abstract In this paper, in the special setting of a Riemannian foliation en- dowed with a bundle-like metric, we obtain conditions that force the vanishing of the kernel of the basic Dirac operator associated to the metric; this way we extend the traditional setting of Riemannian foli- ations with basic-harmonic mean curvature, where Bochner technique and vanishing results are known to work. Beside classical conditions concerning the positivity of some curvature terms we obtain new rela- tions between the mean curvature form and the kernel of the basic Dirac operator
Spacetimes with singularities
Authors: Stoica Ovidiu-Cristinel 
Published: May 2013

Abstract We report on some advances made in the problem of singularities in general relativity.First is introduced the singular semi-Riemannian geometry for metrics which can change their signature (in particular be degenerate). The standard operations like covariant contraction, covariant derivative, and constructions like the Riemann curvature are usually prohibited by the fact that the metric is not invertible. The things become even worse at the points where the signature changes. We show that we can still do many of these operations, in a different framework which we propose. This allows the writing of an equivalent form of Einstein's equation, which works for degenerate metric too.Once we make the singularities manageable from mathematical viewpoint, we can extend analytically the black hole solutions and then choose from the maximal extensions globally hyperbolic regions. Then we find space-like foliations for these regions, with the implication that the initial data can be preserved in reasonable situations. We propose qualitative models of non-primordial and/or evaporating black holes.We supplement the material with a brief note reporting on progress made since this talk was given, which shows that we can analytically extend the Schwarzschild and Reissner-Nordström metrics at and beyond the singularities, and the singularities can be made degenerate and handled with the mathematical apparatus we developed.
Best proximity points of Kannan type cyclic weak ϕ-contractions in ordered metric spaces
Authors: Karapınar Erdal 
Published: May 2013

Abstract In this manuscript, the existence of the best proximity of Kannan Type cyclic weak ϕ-contraction in ordered metric spaces is investigated. Some results of Rezapour-Derafshpour-Shahzad [22] are generalized.
Generalized System for Relaxed Cocoercive Mixed Variational Inequalities and Iterative Algorithms in Hilbert Spaces
Authors: Zhang Shuyi , Guo Xinqi , Luan Dan 
Published: May 2013

Abstract The approximate solvability of a generalized system for relaxed co- coercive mixed variational inequality is studied by using the resolvent operator technique. The results presented in this paper extend and improve the main results of Chang et al.[1], He and Gu [2] and Verma [3, 4].
A multidimensional approach to understanding floral function and form1
Authors: Carr David E. 
Published: May 2013

• Premise of the study: Variation in plant mating systems is a fundamental component of the diversity of floral form and function. Mating systems have a strong influence on the distribution and expression of genetic variation, which in turn can influence the course of mating system evolution. It has long been appreciated, however, that ecological interactions may provide much of the impetus behind these evolutionary changes.• Methods: This commentary reviews the Special Section in the American Journal of Botany (vol. 100, issue 6) that features novel research on the role of interactions between plants and their pollinators, seed dispersers, herbivores, and interspecific competitors in the evolution of selfing rates and gender. These studies vary in approach from empirical experiments, to phylogenetic comparisons, to theoretical models, to literature reviews as they each attempt to shed new light on longstanding questions about the selective forces and evolutionary pathways that have led to the diversified means by which plants promote or discourage self‐fertilization.• Key results: Evidence is provided that indicates that ecological interactions (e.g., herbivory and heterospecific pollen deposition by pollinators) can strongly influence the relative advantages of selfing and outcrossing. Ecological interactions can also influence allocation to sexual functions, which will influence individual and population outcrossing rates and possibly the evolutionary path of gender expression.• Conclusions: Mating systems evolution is clearly a multidimensional problem. Research that places the study of mating and sexual systems within a more realistic ecological context will no doubt reveal more complexity as we move toward a better understanding of plant diversity.
Advertising stereotypes and gender representation in social networking sites
Authors: Tortajada-Giménez Iolanda , Araüna-Baró Núria , Martínez-Martínez Inmaculada-José 
Published: May 2013

This article presents the results of a quantitative and qualitative analysis of adolescent selfpresentations in Fotolog. The images which these adolescents create and share through the Net focus on the construction of the Self. Here gender and sexuality become the main structuring factors of representation. Results point to the fact adolescents selfpresentations mirror some of the categories defined by Goffman in his study of gender hyperritualization in advertising. Moreover, other gender expressions are found in the sample, such as the lesbian pose or the erotization of bodies which Gill also detects in advertising. Despite the fact that the images that adolescents upload in Social Networking Sites reproduce gender stereotypes and patriarchal patterns based in advertising, it must be said that they also elaborate a relatively varied repertoire of pictures and are able to conceive original creations. These creative selfrepresentations are the outcome of a process of negotiation of gender and sexual identity which occurs in these settings, as well as in other adolescent media practices. To avoid a thoughtless reproduction of gender stereotypes and contribute to a critical negotiation of these representations, media education is needed. This media education should take into account the way in which adolescent practices are shaped by other media consumption.
Este artículo presenta los resultados del análisis cuantitativo y cualitativo de las autopresentaciones que los y las adolescentes elaboran para Fotolog. Las imágenes que dichos adolescentes crean y comparten a través de la red están centradas en el sí mismo, y el género y la sexualidad constituyen el eje principal de la representación. Los resultados obtenidos apuntan a que algunas de las categorías que estableció Goffman en su estudio sobre la hiperritualización de la feminidad en la publicidad están presentes en las autopresentaciones analizadas. Además, aparecen otras expresiones de género como la pose lésbica o la erotización de los cuerpos que ya han sido detectadas también en los análisis de la publicidad desarrollados por autoras como Gill. Si bien estas imágenes reproducen estereotipos de género y patrones patriarcales, hay que destacar la presencia de un repertorio variado y algunas creaciones originales, resultado de la negociación identitaria que, respecto al género y a la sexualidad, tiene lugar en estos espacios y otras prácticas mediáticas adolescentes. Para evitar una reproducción irreflexiva de patrones de género estereotipados y contribuir a una negociación crítica de estas representaciones sería importante que la educación mediática tuviera en cuenta la manera en que las prácticas adolescentes en las redes sociales se están nutriendo de otros consumos mediáticos y cómo esto afecta a lo que los y las adolescentes expresan en las redes.
Jacques Rancière’s Aesthetic Regime and Democratic Education
Authors: Lewis Tyson E. 
Published: May 2013

Abstract
This article examines the shared crisis in art and education through the lens of Jacques Rancière’s aesthetic theory. Using China Mieville’s novel The City and the City as a literary model for understanding the relation between these two practices, the author argues that democratic education is, first and foremost, a reconfiguring of the distribution of the sensible. Through a critical analysis of lifelong learning, relational pedagogy, and stultifying pedagogy, the article concludes with a theory of democratic education that finds its inspiration in not only Rancière’s theory but also in Mieville’s novel.
Screening for Cervical Cancer in Low-Resource Settings in 2011
Authors: Tambouret Rosemary 
Published: May 2013

Context.—Cervical cancer remains the most common malignancy in women living in low- and middle-income countries, despite the decline of the disease in countries where cervical cytology screening programs have been implemented.Objectives.—To review the current incidence of cervical cancer in low-resource countries, the availability and types of screening programs, and the treatment options.Data Sources.—Literature review through PubMed, Internet search, and personal communication.Conclusions.—Although data are incomplete, available figures confirm that the rate of cervical cancer deaths and the availability of cervical cancer screening programs are inversely proportional and vary, in general, by the wealth of the nation. Despite the success of cervical cytology screening, many major health care organizations have abandoned screening by cytology in favor of direct visualization methods with immediate treatment of lesions by cryotherapy provided by trained, nonmedical personnel.
Fine-Needle Aspiration Cytology in Ethiopia
Authors: Yeshi Melisachew M. , Tambouret Rosemary H. , Brachtel Elena F. 
Published: May 2013

Context.—Most of the population in Ethiopia lives below the poverty line with severely limited access to health care. The burden of infectious diseases is high, but benign and malignant neoplasms are also encountered frequently. For diagnosis of palpable lesions in this setting, fine-needle aspiration biopsy is the method of choice.Objective.—To present findings from several patients from 3 major hospitals in Ethiopia who underwent fine-needle aspiration biopsy.Data Sources.—Representative cytopathology cases of routinely encountered problems are shown. Often patients present with clinically advanced lesions. Staffing, technique, and equipment used for fine-needle aspiration biopsy are described at Black Lion Hospital (Addis Ababa), the University of Gonder Hospital (Gonder), and Ayder Referral Hospital of Mekelle University in the Tigray region of northern Ethiopia.Conclusions.—Fine-needle aspiration biopsy is a highly effective method for diagnosis of mass lesions, especially in an environment with sparse health care resources, such as Ethiopia. This article illustrates the work of Ethiopian cytopathologists and emphasizes the constraints under which they perform their work.
Loss of function of C9orf72 causes motor deficits in a zebrafish model of amyotrophic lateral sclerosis
Authors: Ciura Sorana , Lattante Serena , Le Ber Isabelle , Latouche Morwena , Tostivint Hervé , Brice Alexis , Kabashi Edor 
Published: May 2013

ObjectiveTo define the role that repeat expansions of a GGGGCC hexanucleotide sequence of the C9orf72 gene play in the pathogenesis of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). A genetic model for ALS was developed to determine whether loss of function of the zebrafish orthologue of C9orf72 (zC9orf72) leads to abnormalities in neuronal development.MethodsC9orf72 mRNA levels were quantified in brain and lymphoblasts derived from FTLD and ALS/FTLD patients and in zebrafish. Knockdown of the zC9orf72 was performed using 2 specific antisense morpholino oligonucleotides to block transcription. Quantifications of spontaneous swimming and tactile escape response, as well as measurements of axonal projections from the spinal cord, were performed.ResultsSignificantly decreased expression of C9orf72 transcripts in brain and lymphoblasts was found in sporadic FTLD and ALS/FTLD patients with normal‐size or expanded hexanucleotide repeats. The zC9orf72 is selectively expressed in the developing nervous system at developmental stages. Loss of function of the zC9orf72 transcripts causes both behavioral and cellular deficits related to locomotion without major morphological abnormalities. These deficits were rescued upon overexpression of human C9orf72 mRNA transcripts.InterpretationOur results indicate C9orf72 haploinsufficiency could be a contributing factor in the spectrum of ALS/FTLD neurodegenerative disorders. Loss of function of the zebrafish orthologue of zC9orf72 expression in zebrafish is associated with axonal degeneration of motor neurons that can be rescued by expressing human C9orf72 mRNA, highlighting the specificity of the induced phenotype. These results reveal a pathogenic consequence of decreased C9orf72 levels, supporting a loss of function mechanism of disease. Ann Neurol 2013;74:180–187