bluuebunny/crossref_metadata_2025 huggingface dataset:
How does collaborative governance scale?
Authors: Ansell Chris , Torfing Jacob
Published: June 2015

Scale is an overlooked issue in the literature on interactive governance. This special issue investigates the challenges posed by the scale and scaling of network and collaborative forms of governance. Our original motivation arose from a concern about whether collaborative governance can scale up. As we learned more, our inquiry expanded to include the tensions inherent in collaboration across scales or at multiple scales and the issue of dynamically scaling collaboration to adapt to changing problems and demands. The diverse cases in this special issue explore these challenges in a range of concrete empirical domains than span the globe.
Not playing any more: A qualitative investigation of why amateur musicians cease or continue membership of performing ensembles
Authors: Pitts Stephanie E. , Robinson Katharine , Goh Kunshan
Published: June 2015

The benefits and pleasures of musical participation are reasonably well known, and yet the number of adults engaging in these activities is only a small proportion of those who learn instruments and participate during their school years. This article reports on three linked studies that investigated the experiences of ‘lapsed’ participants: those who had sought out opportunities for playing in adulthood, before deciding to withdraw for a range of reasons. These reasons are explored through the profiles of the ‘enthusiastic returner’, ‘reluctant retiree’, ‘stressed withdrawer’, ‘tired outsider’ and ‘contented reminiscer’, using qualitative data from participant observation, focus groups, questionnaires and interviews with two amateur ensembles in the North Midlands of England. Implications are considered for lifelong musical engagement, ensemble leadership, and future research into musical participation, identity and learning.
La comunicación en la gestión de la sostenibilidad en las organizaciones
Authors: Krohling Kunsch Margarida M.
Published: June 2015

Este artículo presenta la síntesis de un estudio empírico realizado en organizaciones brasileñas, cuyos principales objetivos han sido mapear, describir y analizar las políticas y estrategias de comunicación para la gestión de la sostenibilidad. Describe y analiza los principales resultados, destacando los medios de comunicación y las prácticas de comunicación en la promoción de la sostenibilidad utilizado por estas organizaciones en sus relacionamientos con las diversas partes interesadas. Se centra en reflexiones sobre el poder de la comunicación en la sociedad contemporánea y el papel reservado a los tres segmentos: el gobierno, el tercer sector y, en particular, las organizaciones privadas en el desarrollo de la comunicación en los procesos de gestión de la sostenibilidad. Apoya la necesidad de una mayor conciencia y sensibilización de todos los actores sociales en la preservación del planeta Tierra.
Comunicación de la ciencia 2.0 en España: El papel de los centros públicos de investigación y de medios digitales
Authors: López Pérez Lourdes , Olvera-Lobo María Dolores
Published: June 2015

España es uno de los países europeos con menor cultura científica, a lo que se suma un descenso de las vocaciones científicas en los últimos diez años. Internet se erige como el principal canal para acercar la ciencia a los nativos digitales y revertir esta situación. Los medios de comunicación y los científicos son los principales actores de esta transformación. El presente estudio demuestra que las universidades públicas españolas y los centros del Consejo Superior de Investigaciones Científicas han comenzado a utilizar las herramientas de la Web 2.0 para comunicar la investigación. Más del 60% tienen canales específicos dedicados a la divulgación de la ciencia. La presencia en redes sociales es aún incipiente, no supera el tercio en ambos casos, aunque la tendencia general, principalmente en los centros del CSIC, es el incremento en el uso de estos canales. En cambio, la investigación española tiene escaso protagonismo en los periódicos digitales de mayor audiencia, a saber, El Mundo, ABC, El País y 20 Minutos, que sólo dedican el 30% de las noticias a la producción científica nacional. Las revistas científicas de alto impacto, como Nature o Science, son la fuente de información más recurrente junto a las dos agencias espaciales más importantes del mundo, la Agencia Espacial Europea y la Administración Nacional de Aeronáutica (ESA) y del Espacio de EEUU (NASA).
El cine como verdad rev(b)elada: Ken Loach; una reflexión sobre los años que forjaron el discurso naturalista del cineasta
Authors: Borrás Mercedes Miguel
Published: June 2015

La sabiduría que se desprende al contemplar el cine de Ken Loach, su depurado estilo naturalista, es fruto de un largo recorrido caracterizado por la coherencia y honestidad. Un cineasta que lleva más de medio siglo dejando huellas de su humanismo, dando voz a los desheredados. ¿De dónde procede su mirada? ¿Cuál es la sustancia expresiva de la que se nutre su discurso?  Detenemos nuestra atención en los filmes realizados en la primera etapa de su carrera (1964-1990), pues es cuando se percibe con mayor fuerza el deseo de Loach de penetrar en la realidad con un lenguaje tan riguroso que el pensamiento parece inscribirse en la película, “un cine de confesión, de ensayo”. Una mirada, que se rebela contra un orden y una sociedad injustos, y engendra emociones insospechadas, convocando a la ternura, pero al mismo tiempo hace que nos cuestionemos lo que se nos está contando.  Un cine puro, directo, sin concesiones, que reduce al mínimo los recursos. Una verdad a la que se accede de forma natural, una verdad revelada. En el calidoscopio de realidades presentes en un mismo acontecimiento, que el cine (por su naturaleza indicial e icónica) es capaz de mostrar, radica esa sustancia expresiva.
Evaluation of gravity field model EIGEN-6C4 by means of various functions of gravity potential, and by GNSS/levelling
Authors: Kostelecký Jan , Klokočník Jaroslav , Bucha Blažej , Bezděk Aleš , Förste Christoph
Published: June 2015

The combined gravity field model EIGEN-6C4 (Förste et al., 2014) is the latest combined global gravity field model of GFZ Potsdam and GRGS Toulouse. EIGEN-6C4 has been generated including the satellite gravity gradiometry data of the entire GOCE mission (November 2009 till October 2013) and is of maximum spherical degree and order 2190. In this study EIGEN-6C4 has been compared with EGM2008 to its maximum degree and order via gravity disturbances and Tzz part of the Marussi tensor of the second derivatives of the disturbing potential. The emphasis is put on such areas where GOCE data (complete set of gradiometry measurements after reductions) in EIGEN-6C4 obviously contributes to an improvement of the gravity field description. 

GNSS/levelling geoid heights are independent data source for the evaluation of gravity field models. Therefore, we use the GNSS/levelling data sets over the territories of Europe, Czech Republic and Slovakia for the evaluation of EIGEN-6C4 w.r.t. EGM2008.
Metabolic control and depression in type 1 diabetes mellitus
Authors: Mokhort Tatiana Vyacheslavovna , Navmenova Yana Leonidovna
Published: June 2015

The most common mental disorder in patients with diabetes mellitus (DM) is depression (DS). Despite the large number of papers about DS in DM, its prevalence in type 1 DM (T1DM) remains unclear. Aim. The aim of this study was to investigate the prevalence of DS in T1DM and its possible association with metabolic control disorders. Materials and Methods. The study included 163 patients with T1DM. The patients were aged 18?65 years, and the mean duration of T1DM was 11.18 years (range 4.28?22.33 years). The control group included 75 apparently healthy individuals. The subjects underwent physical examination, and the standard self-report Hospital Anxiety and Depression Scale questionnaire was administered to evaluate the level of anxiety and DS. Psychological counselling was conducted to diagnose DS and its severity. The continuous glucose monitoring system (CGMS) was used to monitor interstitial fluid glucose levels. Statistical analysis was conducted using SPSS Statistics 17.0 and StatSoft Statistica 6.0. Results. The prevalence of DS among the patients with T1DM was much higher (approximately two-fold) than the prevalence among the healthy individuals. Female sex and age over 40 years were associated with the presence of DS. Conclusion. The development of DS in patients with T1DM is accompanied by poor glycaemic control and increased risk of hypoglycaemic episodes.
Carbohydrate metabolism disorders and coronary collateral circulation in patients with chronic coronary artery disease
Authors: Starostin Ivan Vasil'evich , Talitskiy Konstantin Alexandrovich , Bulkina Olga Samuilovna , Samko Anatoly Nikolaevich , Karpov Yury Alexandrovich
Published: June 2015

Aim. To evaluate the association between coronary collateral circulation (CCC) and carbohydrate metabolism disorders (CMD) in patients with chronic coronary artery disease (CAD). Materials and Methods. Six hundred three patients with chronic CAD were included in this cohort cross-sectional study. Coronary angiography images were used to quantify coronary circulation, including CCC evaluation, with a modified technique proposed by Rentrop. CMD were classified according to the WHO criteria.Potential associations between CMD and CCC were evaluated using multiple linear models that incorporated major angiographic, clinical and laboratory parameters. Results. Among the 603 patients with chronic CAD, 47.4 had CMD, including type 2 diabetes mellitus in 24.2% of the patients, impaired glucose tolerance in 2.8%, type 1 diabetes mellitus in 1.0% and unspecified CMD in 16.1%. CMD were independently associated with lower CCC [odds ratio (OR). = 0.96, p . = 0.003). CMD were independently associated with a decrease in the association . between maximum diameter stenosis and CCC (OR = 0.93, p. = 0.005). No independent associations were found between CCC and type of anti-diabetic treatment, HbA1c levels, insulin resistance (HOMA index), or metabolic syndrome components (body mass index, triglycerides, fasting glucose levels, LDLP cholesterol and arterial hypertension). Conclusion. CMD in patients with chronic CAD are . independently associated with worse CCC. The presence of CMD weakens . the association between maximum diameter stenosis and CCC. Metabolic syndrome components, blood glucose control and anti-diabetic treatment modality were not found to influence CCC.
Vladimir Dilman?theorist and practitioner in the field of endocrinology (90th birth anniversary)
Authors: Bershtein Lev Michailovich
Published: June 2015

Vladimir Dilman ? an internationally renowned endocrinologist, oncologist, and gerontologist whose name is firmly entrenched into the history of medical science. The eve of his 90th birth anniversary is a particularly appropriate time to remember the achievements of Vladimir Dilman. Prof. Dilman predicted what has become a cornerstone of modern theories of origin of many chronic age-associated diseases, highlighting the role of the increase of hypothalamic sensitivity to the inhibitory action of peripheral hormones in the development of main non-communicable diseases. The appreciation of the principal works of V. M. Dilman and his scientific biography not only increases our understanding of this subject, but provides a stimulus to independent research by younger generations and experienced specialists in the field of me. dical science and . practice, including e. ndocrinology and diabetology.
Medien und Stereotype
Authors: Thiele Martina
Published: June 2015

Medien setzen auf stereotype Aussagen und Bilder. Gegenstand der Forschung sind medial vermittelte und konstruierte Stereotype allerdings erst seit einigen Jahrzehnten. Martina Thiele bietet einen Überblick über Geschichte, Theorien und Methoden der kommunikationswissenschaftlichen Stereotypen- und Vorurteilsforschung. Mittels Metaanalysen erhebt sie, welche Studien zu nationalen und ethnischen, religiösen und geschlechtlichen, beruflichen und Altersstereotypen vorliegen und welche politischen und gesellschaftlichen Entwicklungen die Stereotypenforschung forciert oder verhindert haben. So wird ein Forschungsfeld konturiert, das von hoher praktischer Relevanz für Journalismus, Werbung und PR ist.
The Transcription of Identities
Authors: Zhou Min
Published: June 2015

Based on a study of V. S. Naipaul's postcolonial writings, this book explores the process of postcolonial subjects' special route of identification. This enables the readers to see how in our increasingly diverse and fragmented post-modern world, identity is a vibrant, complex, and highly controversial concept. The old notion of identity as a prescribed and self-sufficient entity is now replaced by identity as a plural, floating and becoming process. Min Zhou shows how postcolonial literature, among other artistic forms, is one of the most representative reflections of this floating identity.
Strategien des Gehörtwerdens
Authors: Staudt Kirsten
Published: June 2015

100 Jahre nach der Vertreibung und Ermordung der Armenier im Osmanischen Reich stößt die Völkermordfrage in Frankreich und Deutschland auf unterschiedliche politische Resonanz. Während die Anliegen der armenischen Diaspora in der französischen Politik immer wieder starke Unterstützung finden, gibt sich Deutschland zurückhaltender. Worin bestehen die Unterschiede zwischen beiden Ländern? Kirsten Staudt untersucht verschiedene Einflussgrößen und zeigt: Minderheiten- und Verbandsstrukturen reichen als Erklärung genauso wenig aus wie so genannte Umstände - denn geschichtspolitische Anerkennung ist vor allem abhängig von der Kompatibilität der identitären Bedürfnisse einer Gruppe mit dem jeweiligen nationalen Narrativ.
Stadt und Sicherheit
Authors: Hoepner Felix Sebastian
Published: June 2015

Können Architektur und Städtebau zu einer positiven Identitätsbildung und im Weiteren zu Sicherheitserfahrungen und Kriminalprävention beitragen? Felix Hoepner stellt die Herausbildung maßgeblicher und bis in die Gegenwart wirksamer Leitbilder städtischer Architekturen um 1970 dar und geht ihren Wirkungen auf zeitgenössische Diskurse und architekturbezogene Praktiken nach. Mit einer kontextuellen Untersuchung der einflussreichen Publikationen »Defensible Space« von Oscar Newman (1972) und »Collage City« von Colin Rowe und Fred Koetter (1978) beleuchtet er Ursachen, Bedingungen und Verläufe der Suche nach Sicherheit durch neue Konzepte in Architektur und Städtebau.
Sicher unsicher
Authors: Haubrich Dominik
Published: June 2015

Warum werden wir immer unsicherer, obwohl wir uns immer stärker absichern? Dominik Haubrich nähert sich dieser dialektischen Frage am Beispiel der brasilianischen Metropole Sao Paulo. In einer empirisch originellen und theoretisch fundierten Erkenntnisreise durch die Alltagsgeschichten der städtischen Mittelschicht betrachtet er das gewöhnliche Tun und Sagen von Sicherheit, Gewissheit und Schutz. Eine praktikentheoretische Taxonomie macht das ambivalente Moment der Alltagsordnung sichtbar, in der das sichere Unsicher-Sein wechselseitig in Raum und Zeit hergestellt wird. Die Studie erweitert so den stadtgeographischen Blick auf Un-/Sicherheiten um eine Ontologie verwebter Praktiken und Ordnungen.
Habilidades sociais e adaptação à Universidade: convergências e divergências dos construtos
Authors: Soares Adriana Benevides , Del Prette Zilda Aparecida Pereira
Published: June 2015

Este ensaio visa analisar possíveis relações entre os conceitos de habilidades sociais e de adaptação acadêmica à Universidade, buscando identificar aspectos em que apresentam convergências e divergências. O termo habilidades sociais define o conjunto de comportamentos requeridos para a competência social, conforme critérios especificamente associados a esse construto. A adaptação acadêmica envolve uma integração e uma acomodação das vivências acadêmicas às demandas que são exigidas no contexto universitário. Defende-se que um bom repertório de habilidades sociais contribui para o desempenho socialmente competente, o que pode aumentar a qualidade das vivências acadêmicas e do rendimento acadêmico no processo de adaptação à Universidade. Por outro lado, que o cotidiano e as demandas da vida na Universidade constituem experiências de aprendizagem não somente acadêmicas, mas também sociais. Com base em evidências empíricas de correlação entre medidas de habilidades sociais e de adaptação acadêmica, são discutidas e apontadas possíveis convergências entre esses construtos.
Attributions of causes for unemployment by unemployed workers
Authors: Bendassolli Pedro Fernando , Guedes Gondim Sonia Maria , Coelho-Lima Fellipe
Published: June 2015

This study investigated the assignment of causes for unemployment by unemployed workers, with a view to analyzing the predictive power of sociodemographic variables for the assignment. A scale of causal attribution of unemployment, originally developed by Furnham, was applied to 376 unemployed people. After confirmatory factor analysis (CFA), the scale factors were used in a regression model containing sociodemographic variables as predictors. The CFA results support Furnham’s original three-factor model of unemployment causes (individualistic, societal, and fatalistic; χ2(100) = 261.53, p < 0.001; χ2/gl = 2.61; CFI = 0.91, TLI = 0.90; RMSEA = 0.06). Regression analysis identified significant prediction for only the income variable and individualistic causes factor (β = 0.15, p < 0.01), the income variable and societal causes factor (β = 0.10, p < 0.001), and the educational level variable and societal causes factor (β = -0.15, p < 0.01). Societal causes presented the highest average score, which was significantly (p < 0.001) different than the scores for the other two factors. The study concludes that educational level does not seem to have a linear impact on beliefs regarding the causes for unemployment, nor does gender have a significant influence on these beliefs. Keywords: unemployment; attributing causes; Furnham’s scale
O conhecimento e acesso ao script de base segura e a percepção de suporte social em mães com crianças em idade pré-escolar
Authors: Branco Irina , Monteiro Lígia , Veríssimo Manuela
Published: June 2015

O presente estudo analisou a relação entre o conhecimento e acesso ao script de base  de mães e pais e a percepção da qualidade do suporte social recebido. Participaram 37 mães com crianças em idade pré-escolar. De modo a aceder às representações de vinculação utilizou-se as Narrativas de Representação da Vinculação em Adultos; tendo a competência verbal sido controlada com o recurso ao Índice de Compreensão Verbal (W). O Suporte Social percebido foi avaliado com base na Escala de Satisfação com o Suporte Social. Os resultados indicam associações entre a segurança e dimensões do suporte social. Os resultados são discutidos no contexto da teoria da vinculação de Bowlby e Ainsworth, e do Suporte Social Percebido.
Avaliação Psicológica de Jovens com Comportamentos Desviantes
Authors: Nunes Laura M. , Caridade Sónia - , Oliveira Ana - , Costa André - , Carvalho Cristiana - , Guerra Lara -
Published: June 2015

A avaliação psicológica constitui sempre um processo complexo e que deve atender às especificidades inerentes ao indivíduo, ao grupo ou à comunidade. Assim, não se verificam exceções no que respeita às populações com exteriorização de condutas desviantes e, dentro deste grupo muito alargado, devem ainda ser consideradas as especificidades subjacentes ao tipo de comportamento e ao contexto da sua manifestação. Propomos um plano/roteiro de avaliação voltado para jovens com comportamentos desviantes, com maior ou menor flexibilidade no seguimento dos procedimentos aconselhados, sempre em função das características do alvo de avaliação. Tendo por base a revisão da literatura e a experiência adquirida no âmbito do trabalho desenvolvido pelo Grupo de Consumos e Delinquências (GCD), da Clínica Pedagógica de Psicologia (CPP) da Universidade Fernando Pessoa (UFP), delineámos um protocolo de avaliação, com o objetivo de nortear o conjunto de procedimentos, aquando da avaliação de jovens com sinalização de problemas comportamentais. Trata-se de uma proposta que procura abarcar uma vertente mais impressionista, em que se analisam aspetos mais subjetivos, apelando a técnicas como a observação e a entrevista, não deixando escapar os aspetos mais objetivos, através do recurso a técnicas e a instrumentos mais estruturados.
Determination of caftaric acid in tincture and rose water obtained from Rosae damascenae flores
Authors: Popescu Antoanela , Matei Nicoleta , Roncea Florentina , Miresan Horatiu , Pavalache Georgeta
Published: June 2015

Polyphenolic compounds were determined from a pharmaceutical (tincture) and a cosmetic preparation (rose water), both obtained from the Rosae damascenae flores. Separation of the phenolic compounds was done by a HPLC method, using a Zorbax XDB or equivalent column C18, 250 mm x 4,6 mm; 5 μm. A gradient elution was performed with phosphoric acid and acetonitrile eluted under gradient conditions. The flow rate was 1.5 mL/min and the injection volume was 20 μL. HPLC method for determination of caftaric acid presented in this paper, has been validated. The results were statistically analyzed with SPSS 10 software.
Determination of loratadine in pharmaceuticals by a spectrophotometric method
Authors: Pavalache Georgeta , Matei Nicoleta , Popescu Antoanela
Published: June 2015

The spectrophotometric method for determination of loratadine using tetraiodomercurate has been applied in various pharmaceutical formulations. The results confirmed that recovery value is optimum and the method is valid, thus it can be used in quality control and evaluation of loratadine tablets, oral formulations of mixed composition, oral solutions, etc. The method is easy and simple to apply, does not require complicated equipment and spectrophotometric reading time is reduced, which allows a large number of analyzes in a relatively short time.
Applications of a DAD-HPLC method for determination of loratadine on biological samples
Authors: Pavalache Georgeta , Matei Nicoleta , Popescu Antoanela , Schroder Verginica
Published: June 2015

The aim of research is to assess the active substance by a HPLC method for the separation and quantitative determination of loratadine. The method has been developed and validated on the standard solutions, in previous research. The current study was undertaken to present the results obtained from loratadine determination in biological samples (human serum, urine and breast milk). These results may be applicable on patients with different physiological conditions (aging, pregnancy or recently giving birth, etc.) and pathological conditions which may interfere with the metabolism of loratadine. The used HPLC method detected loratadine concentrations in human serum samples, respectively urine samples, at 2 hours after drug administration. The method detected traces of loratadine which passed into breast milk, as well. Data were statistically interpreted using MED CALC 10.2 software. These results show that the applied method can be used for quantitative analysis of loratadine in biological fluids (all permissible limits of quality specifications being in the range 95- 105%).
Cadmium and lead occurrence in soil and grape from Murfatlar Vineyard
Authors: Matei Nicoleta , Popescu Antoanela , Radu Gabriel-Lucian , Artem Victoria , Pavalache Georgeta
Published: June 2015

The study investigates the pollution with heavy metals of grapes and soil. The grapes nourish from the respective soil, with all existing substances: either nutrients or toxic materials. This link, between grapes and soil, made mandatory to focus on observing the level of toxic materials in both samples grapes and land. The aim of this research is to analyze the level of Cd and Pb in Vitis vinifera L. grape fruits and soil, by flame atomic absorption spectrometry (FAAS) method. The grapes and the soil used in this work were sampled from the Murfatlar City, a nonindustrial area, placed far from the car traffic pollution. Cd and Pb were quantified, after the chemical mineralization of the samples using nitric acid. It can be noticed that the values of cadmium and lead concentrations in grapes were lower than the recommendable maximum limit.
Optimal Product R&D Policies with Endogenous Quality Choices and Unilateral Spillover
Authors: Taba Yumiko
Published: June 2015

This study derives non-cooperative and cooperative optimal product research and development (R&D) policies of a country with a high-quality firm and a country with a low-quality firm in the presence of technology spillover under Cournot and Bertrand competitions in an international duopoly. When the respective governments determine their R&D policies non-cooperatively, optimal policies for both countries involve an R&D tax (subsidy) if spillover is large (small). When the governments choose their R&D policies cooperatively, a tax is always optimal for the country with low-quality firm and a subsidy (tax) is optimal for the country with high-quality firm if spillover is large (small). In addition, we show that the non-cooperative optimal product R&D Policy is tax for a wider range of spillover effects under Cournot competition, compared to the case of Bertrand competition.
Performance characteristics of the VIDAS® 25-OH Vitamin D Total assay – comparison with four immunoassays and two liquid chromatography-tandem mass spectrometry methods in a multicentric study
Authors: Moreau Emmanuel , Bächer Silvia , Mery Sophie , Goff Caroline Le , Piga Nadia , Vogeser Michael , Hausmann Michael , Cavalier Etienne
Published: June 2015

The study was conducted to evaluate the analytical and clinical performance of the VIDAS

VIDAS

The VIDAS

The VIDAS
Correlates of serum hepcidin levels and its association with cardiovascular disease in an elderly general population
Authors: Pechlaner Raimund , Kiechl Stefan , Mayr Manuel , Santer Peter , Weger Siegfried , Haschka David , Bansal Sukhvinder S. , Willeit Johann , Weiss Günter
Published: June 2015

The expression of the key iron regulatory hormone hepcidin is regulated by iron availability, inflammation, hormones, hypoxia, and anaemia. Increased serum concentrations of hepcidin have recently been linked to atherosclerosis. We studied demographic, haematologic, biochemical, and dietary correlates of serum hepcidin levels and its associations with incident cardiovascular disease and with carotid atherosclerosis.

Serum hepcidin concentrations were measured by tandem mass spectrometry in samples taken in 2000 from 675 infection-free participants of the prospective population-based Bruneck study (age, mean±standard deviation, 66.0±10.2; 48.1% male). Blood parameters were measured by standard methods. Dietary intakes of iron and alcohol were surveyed with a food frequency questionnaire. Carotid atherosclerosis (365 cases) was assessed by ultrasound and subjects were observed for incident stroke, myocardial infarction, or sudden cardiac death (91 events) until 2010.

Median (interquartile range) hepcidin levels were 2.27 nM (0.86, 4.15). Most hepcidin correlates were in line with hepcidin as an indicator of iron stores. Independently of ferritin, hepcidin was related directly to physical activity (p=0.024) and fibrinogen (p<0.0001), and inversely to alcohol intake (p=0.006), haemoglobin (p=0.027), and γ-glutamyltransferase (p<0.0001). Hepcidin and hepcidin-to-ferritin ratio were not associated with prevalent carotid atherosclerosis (p=0.43 and p=0.79) or with incident cardiovascular disease (p=0.62 and p=0.33).

In this random sample of the general community, fibrinogen and γ-glutamyltransferase were the most significant hepcidin correlates independent of iron stores, and hepcidin was related to neither atherosclerosis nor cardiovascular disease.
Clinical utility of one versus two faecal immunochemical test samples in the detection of advanced colorectal neoplasia in symptomatic patients
Authors: Auge Josep Maria , Fraser Callum G. , Rodriguez Cristina , Roset Alba , Lopez-Ceron Maria , Grau Jaume , Castells Antoni , Jimenez Wladimiro
Published: June 2015

The utility of faecal immunochemical tests (FIT) in assessment of symptomatic patients with lower gastrointestinal symptoms has not been well explored. The aims of this study were to evaluate the diagnostic yield for advanced colorectal neoplasia (ACRN) in symptomatic patients using the first of two FIT samples (FIT/1) and the higher concentration of two FIT samples (FIT/max).

Samples from two consecutive bowel motions from 208 symptomatic patients who required colonoscopy were analysed using the HM-JACKarc analyser (Kyowa Medex Co., Ltd., Tokyo, Japan). Patients were categorised into two groups: patients with any ACRN and individuals with other diagnoses or normal colonoscopy.

Colonoscopy detected ACRN in 29 patients. In these patients, FIT/1 and FIT/max were significantly higher than in patients with low-risk adenoma (p=0.006 and p=0.024), other findings (p=0.002 and p=0.002) and normal colonoscopy (p<0.001 and p<0.001). The areas under the curves (AUC) of FIT/1 and FIT/max were 0.71 and 0.69, respectively. Undetectable FIT/1 rules out 96.6% of ACRN and the specificity was 10.6%. Increasing the FIT/1 cut-off to 10 μg Hb/g faeces, sensitivity and specificity were 34.5% and 87.2%, respectively. Similar results were obtained using FIT/max with 20 μg Hb/g faeces cut-off, providing a sensitivity and specificity of 34.5% and 85.6%, respectively.

Undetectable FIT is a good strategy to rule-out ACRN in symptomatic patients. The diagnostic yield of collecting two samples for FIT can be achieved with one sample, but a lower faecal haemoglobin concentrations (f-Hb) cut-off is required.
Homocitrulline: a new marker for differentiating acute from chronic renal failure
Authors: Desmons Aurore , Jaisson Stéphane , Pietrement Christine , Rieu Philippe , Wynckel Alain , Gillery Philippe
Published: June 2015

Carbamylation is a non-enzymatic post-translational modification of proteins characterized by the addition of isocyanic acid to amino groups. As isocyanic acid mainly originates from the spontaneous dissociation of urea, carbamylation rate is increased during renal failure. The aim of the study was to evaluate serum homocitrulline (HCit), which results from the carbamylation of ε-amino groups of lysine (Lys) residues, in acute renal failure (ARF) and to determine if it could be useful for differentiating acute from chronic renal failure (CRF).

In total, 213 patients with renal failure referred to the nephrology department of the university hospital of Reims were included. Patients were classified into three groups: patients with ARF (ARF group, n=39), patients with CRF complicated with ARF (A/CRF group, n=29) and patients with CRF (CRF group, n=145). Serum HCit concentrations were measured by LC-MS/MS. Concentration kinetics of HCit and urea were studied in patients suffering from ARF. The HCit thresholds distinguishing ARF and CRF were investigated.

HCit concentrations increased in ARF patients reaching a peak delayed compared to urea concentration peak. HCit concentrations were positively correlated with urea concentrations (r=0.51) and with the time elapsed since the estimated onset of ARF (r=0.57). Serum HCit concentrations were higher (p<0.05) in CRF group compared to ARF group. The receiver operating characteristic curve analysis showed that HCit concentrations <289 μmol/mol Lys were predictive of ARF (Sensitivity: 83%, Specificity: 72%, AUC: 0.856).

Our results demonstrate that HCit is a promising biomarker for distinguishing between ARF and CRF patients.
Lipiduria – with special relevance to Fabry disease
Authors: Becker Gavin J. , Nicholls Kathleen
Published: June 2015

Examination of the urine under the microscope using polarised light is invaluable for detecting and identifying lipid particles. Attention to the shape of these Maltese cross bearing bodies can distinguish conventional fat particles from Fabry bodies with great sensitivity and specificity across a wide phenotypic spectrum. This could be a cheap and rapid tool for screening subjects suspected of having Fabry disease for renal involvement. It remains to be seen whether there is value in integrating polarised light into automated urine microscopy machines, but potentially this could greatly help the pathologist or nephrologist in identifying unusual urinary particles, and broaden the capacity for larger scale screening.
Corrosion inhibition behavior of two quinoline chalcones: insights from density functional theory
Authors: Gece Gökhan
Published: June 2015

There has been a considerable surge of experimental inquiry in recent years into understanding the factors responsible for the corrosion inhibition efficiency of chalcones; however, the question of what actually determines the efficiency still remains a topic of debate. In this study, the dependence of the inhibition effect of such two compounds, namely, 3-(3-oxo-3-phenyl-propenyl)-1H-quinolin-2-one and 3-(3-oxo-3-phenyl-propenyl)-1H-benzoquinolin-2-one, on their molecular and electronic structure is analyzed using density functional theory calculations. In agreement with experiments, this study found strong evidence to link corrosion inhibition property of the compounds to their actual molecular structures in acidic media.
Variability of sulfur speciation in sediments from Sulejów,Turawa and Siemianówka dam reservoirs (Poland)
Authors: Drzewicki Wojciech , Ciężka Monika , Jezierski Piotr , Jędrysek Mariusz Orion
Published: June 2015

A study on sulfur circulation in sediments wascarried out in dam reservoirs (Sulejów, Siemianówka, Turawa)with different hydrological and age characteristicsas well as with a different level of sediment accumulationand organic matter content.Differences in the isotopic composition of SO2−
4 in the watercolumn and small variations in the concentration ofthis ion were observed in the Turawa reservoir. The investigationsdid not show vertical variation in the watercolumnconcentrations and isotopic composition. This isdue to the small depths of the reservoir and mixing of water.A part of sulfate sulfur from the water column is reducedby incorporating it into cell structures, while a partof it is deposited in the sediment. The study revealed asmall exchange of SO2−
4 between thewater column and thesediment. Depending on the season of the year and thesediment sampling site, biogeochemical transformationsof sulfur species are observed.A significant variation in the biogeochemical processeswas found between the Siemianówka and Sulejów reservoirs,both in the concentrations and in the isotopic compositionof particular sulfur species. This primarily resultsfrom the different characteristics of either of these reservoirs(flows, sedimentation, and material discharge to thelake). The main source of sulfur supplied to the sedimentsin the Siemianówka reservoir is organic sulfur contained inorganic matter deposited at the bottom. In the sediment,organic sulfur is bacterially oxidized and fixed as SO2−
4 .This is manifested in a substantial enrichment of sulfate in34S. The presence of polysulfides was found in both reservoirs,but a distinct depletion of δ34S(S2−) in the light sulfurisotope was observed in the Siemianówka reservoir. Ina part of the Sulejów reservoir, polysulfides are oxidized toSO2−
4 ,probably at the sediment/water interface.
Impact of landfilling of red mud waste on local environment – the case of Górka / Wpływ Składowania Odpadów Typu Red Mud Na Środowisko Lokalne Na Przykładzie „Górki“
Authors: Pietrzyk-Sokulska Elżbieta , Kulczycka Joanna
Published: June 2015

Streszczenie

Pomimo zaostrzenia wymagań środowiskowych, na terenie Europy nadal występują zdegra- dowane obszary przemysłowe, które stanowią poważane zagrożenie dla środowiska i zdrowia ludzi. Jednym z nich są składowiska odpadów typu red mud o silnie alkalicznym odczynie, często za- wierające toksyczne związki. Na całym świecie jest zmagazynowanych około 2,7 mld Mg odpadów typu red mud. W artykule przedstawiono problemy związane ze składowiskiem odpadów tego typu, zlokalizowanym w opuszczonym kamieniołomie pomarglowym w Trzebini (Polska połud- niowa). Identyfikacja zachodzących w nim zmian w ostatnich latach oraz związanego z nimi wpły- wu na środowisko pozwoliła wskazać sposób postępowania minimalizujący istniejące zagro- żenia. Przeprowadzone w trakcie 30-lctniego istnienia wyrobiska badania wskazują, iż zachodząca w tym czasie infiltracja zgromadzonych na zwałowisku odpadów przez wody deszczowe i podziemne była powodem powstania głębokiego zbiornika silnie alkalicznych odcieków (pH >13), które mogą negatywnie oddziaływać na środowisko wodno-glebowc. W 2000 r. podniesienie poziomu odcieków w zbiorniku do krawędzi wyrobiska zagroziło ich przelaniem na otaczający teren, stwarzając zagro- żenie dla zdrowia ludzi. Działania zaradcze, w postaci odpompowywania nadmiaru odcieków, zapo- biegły czasowo ekologicznej katastrofie. Ze względu na to, że skład chemiczny odpadów red mud może stwarzać potencjalne zagrożenie dla środowiska ze względu na wypłukiwanie z nich substancji toksycznych, które mogą przyczynić się do skażenia gleby i wody wokół zbiornika, szczegółowe analizy odcieków ze zbiornika Górka, gleby wokół zbiornika Górka, wody i osadów dennych w jeziorze Balaton (znajdującego się w pobliżu składowiska) zostały przeanalizowane. Składo- wany odpad przestanie stanowić zagrożenie dopiero dzięki całkowitej utylizacji. Może to nastąpić w roku 2015 dzięki realizacji kompleksowych prac rekultywacyjnych dofinansowanych z funduszy rządowych i UE.
Wpływ wybranych zagrożeń środowiskowych na właściwości hydrofobowe drobnodyspersyjnego wapienia / The Influence of Chosen Environmental Hazards on Hydrophobic Properties of Fine Dispersional Limestone
Authors: Vogt Elżbieta , Horak Anna , Wolak Eliza , Kanik Urszula
Published: June 2015

Streszczenie

Przestawiono wyniki badań zmiany hydrofobowych właściwości drobnodyspersyjnego wapienia pod wpływem wybranych czynników korozyjnych. Badano dwie frakcje ziarnowe drobnodysper- syjnego wapienia, o średnicy ziaren zgodnie z danymi producenta (Kopalnia Wapienia Czatkowice) wynoszącej odpowiednio: dla mączki wapiennej poniżej 80 um oraz piasku wapiennego z przedziału 100-400 um. Badano również mączką wapienną hydrofobizowaną w kamieniołomie wapieni i margli cementowni w Małogoszczy. Badano materiały surowe oraz hydrofobizowanc za pomocą kwasu stearynowego, preparatu silikonowego oraz preparatu bitumicznego. Jako substancji agresywnych (korodotwórczych) użyto roztworów: kwasu etanowego, zasady amonowej, siarczanu VI sodu. Określono wpływ tych substancji na zmianą nasiąkliwości i ściśliwości badanych materiałów. Miarą nasiąkliwości była zmiana wilgotności materiałów podczas procesu wilgotnego składowania. Ściśli- wość obliczano na podstawie pomiarów deasymetrycznych: gęstości nasypowej swobodnej i upako- wanej, oznaczanych za pomocą cylindra miarowego. Niewielkie zmiany wartości współczynników ściśliwości uzyskane dla materiałów skorodowanych w porównaniu do wartości uzyskanych dla materiałów wyjściowych świadczą o podobnych właściwościach kohezyjnych obu rodzajów mate- riałów. Większość modyfikowanych (hydrofobowych) materiałów po procesie korodowania uzyski- wała gorsze właściwości wodoodporne niż materiały wyjściowe, ale w dalszym ciągu charakte- ryzowała sią wyższym stopniem hydrofobowości niż skorodowane materiały surowe. Dla mączki wapiennej nie uzyskano powtarzalnych wyników, co najprawdopodobniej spowodowane jest większą reaktywnością tego materiału związaną z małą średnicą ziaren. Przeprowadzone badania miały charakter wstępny.
Analiza porównawcza kosztu kapitału własnego przedsiębiorstw górnictwa węgła kamiennego w ujęciu międzynarodowym / Comparative Analysis of the Cost of Equity of Hard Coal Mining Enterprises – An International Perspective
Authors: Michalak Aneta , Leszek Nawrocki Tomasz
Published: June 2015

Streszczenie

Branża górnictwa węgla kamiennego, uznawana za znajdującą się w fazie schyłkowej, przechodzi Ropniowe odrodzenie. Światowy rynek węgla rośnie. Popyt na czarne paliwo jest napędzany głównie przez energetykę w krajach spoza OECD oraz rosnące ceny alternatywnych nośników energii. W związku z rosnącą rolą przedsiębiorstw górniczych w rozwoju gospodarki światowej w niniejszym artykule podjęto problem kosztu kapitału własnego zaangażowanego w finansowanie tego typu przedsiębiorstw. Celem artykułu jest analiza porównawcza kosztu kapitału własnego przedsiębiorstw górniczych w ujęciu międzynarodowym. Zbadano koszt kapitału własnego w największych kon­cernach górniczych działających na rynku w Australii, Chinach oraz USA. Badaniem objęto 12 przed­siębiorstw wydobywających węgiel kamienny. Okres badań obejmuje lata 2009-2013. W badaniach zastosowano przede wszystkim analizę statystyczną danych pierwotnych, dotyczących notowań akcji badanych przedsiębiorstw górniczych oraz indeksów giełd papierów wartościowych, stanowiących dla nich benchmarki. Przeprowadzone badania mogą być pomocne do określenia perspektyw roz­wojowych węgla kamiennego na świecie w aspekcie uwarunkowań międzynarodowych. Pozwalają również uzyskać odpowiedź na podstawowe pytanie badawcze: czy w obliczu globalizacji rynków międzynarodowych i intensyfikacji przepływu surowców, w szczególności węgla, koszt kapitału własnego zaangażowanego do finansowania przedsiębiorstwa wydobywającego węgiel kamienny jest zróżnicowany względem rynku, na którym to przedsiębiorstwo działa? Uzyskane wyniki pozwalają stwierdzić, że koszt kapitału własnego przedsiębiorstw górnictwa węgla kamiennego jest zróż­nicowany w zależności od rynku, na którym te przedsiębiorstwa prowadzą działalność. Zaobser­wowana prawidłowość stanowi przyczynek dalszych badań w kierunku poszukiwania przyczyn tego zróżnicowania oraz wskazania konsekwencji w dłuższej perspektywie czasowej.
Wykazywanie zasobów wêgla kamiennego w Polsce zgodnie z JORC Code / Reporting of Hard Coal Reserves and Resources in Poland on the Basis of the JORC Code
Authors: Saługa Piotr W. , Sobczyk Eugeniusz J. , Kicki Jerzy
Published: June 2015

Streszczenie

Wykazywanie zasobów złóż kopalin oraz podawanie tych informacji do wiedzy publicznej stanowi istotne zagadnienie w odniesieniu do zasadności prowadzenia działalności gospodarczej w branży geologiczno-górniczej. Od szeregu lat w przestrzeni międzynarodowej funkcjonuje system raportowania i klasyfikacji zasobów kopalin stałych bazujący na australijskim kodeksie JORC. Dokument ten, honorowany przez giełdy, przedstawia minimum standardów i wytyczne niezbędne do rzetelnego i wiarygodnego wykazywania zasobów złóż; kodeks JORC stosuje dwie podstawo­we kategorie zasobów: resources i resenres, z których pierwsza odnosi się do zapasów (zasobów bilansowych) kopaliny, a druga do zasobów wydobywalnych - czyli wielkości możliwych do wy­dobycia przy uwzględnieniu aktualnie dostępnych środków technicznych i obecnych kryteriów ekonomicznych. Układ klasyfikacji jest hierarchiczny - zasoby resen/es stanowią podzbiór zapasów. Wraz z napływem informacji geologicznej wśród tych ostatnich wyróżnia się zasoby domniemane (inferred), oznaczone (indicated) oraz zmierzone (measured), natomiast w obrębie pierwszych - zasoby prawdopodobne (probable) i pewne (proved). Zasoby bilansowe zmierzone oraz wy doby walne pewne stanowią najlepiej rozpoznane partie złóż. W związku z sukcesem JORC wiele krajów wprowadziło bazujące na nim własne, narodowe kodeksy wykazywania zasobów. Kodeksy te sku­pione są w obrębie CRIRSCO - Komitecie Międzynarodowych Standardów Wykazywania Zasobów Kopalin [stałych].

Polska klasyfikacja zasobów ma hierarchiczny charakter - z łącznych zasobów geologicznych wyodrębnia się zasoby bilansowe obejmujące zasoby przemysłowe i nieprzemysłowe. W zależności od zakresu wiedzy geologicznej zasoby wykazuje się w pięciu kategoriach rozpoznania: D, C2, Cj, B i A. Po odjęciu strat i uwzględnieniu zubożenia otrzymuje się zasoby eksploatacyjne. Jak do­tychczas, pomimo doświadczeń rosyjskich w tym zakresie, w Polsce nie wypracowano standardu harmonizującego system polski i międzynarodowy. Treść niniejszego artykułu przedstawia pro­pozycję takiego dostosowania.
Recovery of molybdenum from alkali leaching solution of low-grade molybdenum concentrate by ion exchange
Authors: Gao Zhaoguo , Zhang Bo , Liu Hongzhao , Wang Wei , Cao Yaohua
Published: June 2015

In order to extract molybdenum (Mo) from alkali leaching solution of low-grade Mo concentrate, static and dynamic ion exchange experiments were performed. The static experiments results indicated that the adsorption capacity of D201 resins reached 93.50% at pH 3.5, while the adsorption capacity of D314 resins was 95.47%. Therefore, D314 resin was adopted for further experiments. The dynamic experiments results indicated that the adsorption capacity of Mo reached 96.77% when the flow rate of leaching solution was 1 ml/min. The loaded resin could be desorbed by 10% ammonia solution. In consequence, the maximum concentration of Mo in eluate was 122 g/l. In the precipitation process, the Mo recovery reached 97.81%, and the obtained Mo oxide products met the requirement of YMo 55 national standard in GB/T24482-2009 and Grade A standard of ASTM A146-04 (2014).
Mode of action of brown rot decay resistance in phenol-formaldehyde-modified wood: resistance to Fenton’s reagent
Authors: Hosseinpourpia Reza , Mai Carsten
Published: June 2015

The mode of action of phenol-formaldehyde (PF)-modified wood has been investigated with respect to its resistance to brown rot decay. The Fenton reaction is assumed to play a key role in the initial brown rot decay. Pine microveneers were modified to various weight percent gains (WPG) with low molecular weight PF and exposed to a solution containing Fenton’s reagent. The mass loss (ML) and tensile strength loss (TSL) as well as the decomposition of hydrogen peroxide within the incubation time decreased with the increasing WPG of the veneers. Incubation of untreated and PF-modified veneers in acetate buffer containing ferric ions without H2O2 revealed that the modification strongly reduces the uptake of iron by the wood cell wall. Further studies indicated that lignin promotes the decay of wood by Fenton’s reagent. The reason for the enhanced resistance of modified wood to the Fenton reaction is attributable to the impeded diffusion of iron ions into the cell wall rather than to the blocking of free phenolic sites of lignin, which accelerate redox cycling of iron.
The health of Swiss adolescents and its implications for training of health professionals in Switzerland
Authors: Meynard Anne , Rutishauser Christoph , Thomi Mirjam , Stronski Huwiler Suzanne M.
Published: June 2015

Swiss adolescents generally enjoy satisfying life conditions. Nonetheless, violence, suicide and mental health are the main concerns together with injuries, chronic conditions and eating disorders. Adolescents still face barriers to access the care they need. Adequate training can improve practitioners’ skills when dealing with adolescents. The last two decades have seen the development of innovative adolescent health units and networks in various regions of Switzerland as well as research and public health programmes. Training programmes in adolescent health (continuous medical education, post-graduate or pre-graduate) for physicians and nurses are developing but still patchy in Switzerland. Adolescent health is not a sub-specialty as such. Efforts have to be made in order to link with professional associations and institutions to implement adolescent health curricula more efficiently.