bluuebunny/crossref_metadata_2025 huggingface dataset:
A percepção de mulheres sobre o exame preventivo de câncer uterino e os seus resultados
Authors: Sebold Luciara Fabiane , Suave Suelen , Girondi Juliana Balbinot Reis , Kempfer Silvana Silveira , Echevarría-Guanilo Maria Elena
Published: November 2017

Objetivo: analisar a compreensão das mulheres ao receberem o resultado do exame orientado pela enfermeira. Métodos: pesquisa de abordagem qualitativa, Convergente Assistencial. Foi desenvolvida com 14 mulheres, usuárias da Estratégia Saúde da Família, de um município de Santa Catarina, Brasil, em outubro de 2011. Utilizou-se entrevista semiestruturada e a análise de conteúdo Resultados: as mulheres que não realizavam o exame preventivo com periodicidade tinham menos compreensão dos resultados que daquelas que realizavam o exame anualmente. A atuação do enfermeiro nas ações educativas é de extrema importância, orientando sobre prevenção, esclarecendo dúvidas e divulgando informações adequadas. Considerações finais: as mulheres que adquirem confiança no profissional enfermeiro entendem que esse é qualificado para realizar a coleta e a entrega do resultado do exame.
Percepções de gestantes tabagistas sobre malefícios do tabaco durante a gestação
Authors: Cruz Joarez Da , Cruz Josceli Gonçalves , Bortoli Cleunir De Fatima Candido de
Published: November 2017

Objetivo: conhecer a percepção das gestantes sobre os malefícios e as consequências do uso do tabaco durante a gestação. Método: estudo de campo, descritivo, qualitativo. Participaram do estudo 18 gestantes tabagistas. Os dados foram coletados, utilizando a técnica de entrevista semiestruturada. A análise dos dados foi orientada pela proposta operativa. Resultados: na análise, emergiram três categorias: início do tabagismo, que esteve relacionado ao entorno social e familiar; abordagem da gestante tabagista, revela a falta de apoio e suporte para o abandono do tabagismo; a percepção das gestantes sobre o tabagismo, que mesmo conhecendo os malefícios do tabaco, as dificuldades para abandonar o vício prevalecem. Considerações finais: o pré-natal é um importante momento para ações voltadas ao controle do tabagismo. São fundamentais a organização de grupos de apoio e o envolvimento do núcleo familiar, na cessação do tabagismo
PKD1 Promotes Functional Synapse Formation Coordinated with N-Cadherin in Hippocampus
Authors: Cen Cheng , Luo Li-Da , Li Wen-Qi , Li Gang , Tian Na-Xi , Zheng Ge , Yin Dong-Min , Zou Yimin , Wang Yun
Published: November 2017

Functional synapse formation is critical for the wiring of neural circuits in the developing brain. The cell adhesion molecule N-cadherin plays important roles in target recognition and synaptogenesis. However, the molecular mechanisms that regulate the localization of N-cadherin and the subsequent effects remain poorly understood. Here, we show that protein kinase D1 (PKD1) directly binds to N-cadherin at amino acid residues 836–871 and phosphorylates it at Ser 869, 871, and 872, thereby increasing the surface localization of N-cadherin and promoting functional synapse formation in primary cultured hippocampal neurons obtained from embryonic day 18 rat embryos of either sex. Intriguingly, neuronal activity enhances the interactions between N-cadherin and PKD1, which are critical for the activity-dependent growth of dendritic spines. Accordingly, either disruption the binding between N-cadherin and PKD1 or preventing the phosphorylation of N-cadherin by PKD1 in the hippocampal CA1 region of male rat leads to the reduction in synapse number and impairment of LTP. Together, this study demonstrates a novel mechanism of PKD1 regulating the surface localization of N-cadherin and suggests that the PKD1-N-cadherin interaction is critical for synapse formation and function.

SIGNIFICANCE STATEMENTDefects in synapse formation and function lead to various neurological diseases, although the mechanisms underlying the regulation of synapse development are far from clear. Our results suggest that protein kinase D1 (PKD1) functions upstream of N-cadherin, a classical synaptic adhesion molecule, to promote functional synapse formation. Notably, we identified a crucial binding fragment to PKD1 at C terminus of N-cadherin, and this fragment also contains PKD1 phosphorylation sites. Through this interaction, PKD1 enhances the stability of N-cadherin on cell membrane and promotes synapse morphogenesis and synaptic plasticity in an activity-dependent manner. Our study reveals the role of PKD1 and the potential downstream mechanism in synapse development, and contributes to the research for neurodevelopment and the therapy for neurological diseases.
Pharmaceuticals and personal care products (PPCPs) are ecological disrupting compounds (EcoDC)
Authors: Richmond Erinn K. , Grace Michael R. , Kelly John J. , Reisinger Alexander J. , Rosi Emma J. , Walters David M.
Published: November 2017

Pharmaceuticals and personal care products (PPCPs) are ubiquitous in freshwater ecosystems worldwide and are recognized as contaminants of concern. Currently, contaminants of concern are classified for their persistence, bioaccumulation, and toxicity (PBT criteria). PPCPs are not classified as persistent organic pollutants (POPs), although some PPCPs share characteristics similar to POPs. For example, PPCPs are known to be pseudopersistent due to constant discharge into the environment, often at low concentrations. At commonly reported environmental concentrations, PPCPs are rarely toxic, but the ability of these compounds to disrupt ecological processes and functions in freshwater ecosystems is often overlooked. Herein we briefly summarize recent studies highlighting the potential ecological effects of PPCPs, including effects on key ecological processes (e.g. primary productivity and community respiration), and we propose that appropriate screening for harmful effects of PPCPs in surface waters should be expanded to include Ecologically Disrupting Compounds (EcoDC) in addition to the established PBT criteria.
Cultura europeia e indígena no Rio da Prata nos séculos XVI/XVIII
Authors: Alvares Kern Arno
Published: November 2017

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Juventude operária católica: uma utopia operária
Authors: Muraro Valmir Francisco
Published: November 2017

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PETROGLIFOS DO ABRIGO DO BARREIRO
Authors: Vargas Lima Taís , Proenza Brochado José
Published: November 2017

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PESQUISAS ARQUEOLÓGICAS NAS MISSÕES JESUÍTICO-GUARANIS (1984-1994)
Authors: Alvares Kern Arno
Published: November 2017

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Established risk factors for addiction fail to discriminate between healthy gamers and gamers endorsing DSM-5 Internet gaming disorder
Authors: Deleuze Jory , Nuyens Filip , Rochat Lucien , Rothen Stéphane , Maurage Pierre , Billieux Joël
Published: November 2017

Background and aims

The DSM-5 includes criteria for diagnosing Internet gaming disorder (IGD) that are adapted from substance abuse and widely used in research and clinical contexts, although evidence supporting their validity remains scarce. This study compared online gamers who do or do not endorse IGD criteria regarding self-control-related abilities (impulsivity, inhibitory control, and decision-making), considered the hallmarks of addictive behaviors.

Method

A double approach was adopted to distinguish pathological from recreational gamers: The first is the classic DSM-5 approach (≥5 criteria required to endorse the IGD diagnosis), and the second consists in using latent class analysis (LCA) for IGD criteria to distinguish gamers’ subgroups. We computed comparisons separately for each approach. Ninety-seven volunteer gamers from the community were recruited. Self-reported questionnaires were used to measure demographic- and game-related characteristics, problematic online gaming (with the Problematic Online Gaming Questionnaire), impulsivity (with the UPPS-P Impulsive Behavior Scale), and depression (with the Beck Depression Inventory-II). Experimental tasks were used to measure inhibitory control (Hybrid-Stop Task) and decision-making abilities (Game of Dice Task).

Results

Thirty-two participants met IGD criteria (33% of the sample), whereas LCA identified two groups of gamers [pathological (35%) and recreational]. Comparisons that used both approaches (DSM-5 and LCA) failed to identify significant differences regarding all constructs except for variables related to actual or problematic gaming behaviors.

Discussion

The validity of IGD criteria is questioned, mostly with respect to their relevance in distinguishing high engagement from pathological involvement in video games.
RUSSIAN PEDIATRIC EXPERIENCE ON ASSESSING THE EFFECTIVENESS OF IMIGLUCERASE FOR LONG-TERM ENZYME REPLACEMENT THERAPY OF GAUCHER DISEASE TYPE 1 IN CHILDREN
Authors: Movsisyan G. B. , Namazova-Baranova L. S. , Savostyanov K. V. , Gundobina O. S. , Semikina E. L. , Ryazanov M. V. , Travina M. L. , Chernikov V. V. , Pushkov A. A. , Bukina T. M.
Published: November 2017

Background: Today the gold standard for the treatment of Gaucher’s disease (GD) is an enzyme replacement therapy (ERT) which allows to stop the main clinical manifestations of the disease and to improve the quality of life in patients. In Russian pediatric practice, there are no publications which assess the effects of long-term ERT in children with GD type 1.Aim: To evaluate the effectiveness of imiglucerase for the treatment of Gaucher’s disease of type 1 in child population of the Russian Federation.Materials and methods: An evaluation of the effectiveness of enzyme replacement therapy was carried out by analyzing the monitoring data of 60 patients who were entered in the Russian pediatric registry of Gaucher disease at the National Scientific and Practical Center for Children’s Health for the period 2013−2016. Patients received continuous infusions of imiglucerase at a dose of 30−60 U/kg/2 weeks. Among of 60 children with Gaucher’s disease type 1, in 35 (group I) were recorded the dynamics of clinical and laboratory-instrumental indices during three years of therapy and in 25 (group II) ― an assessment of changes in quality of life parameters according to the PedsQL questionnaire within one year of treatment.Results: In group I, statistically significant changes for all key parameters (p0.001) were detected: median hemoglobin level and platelet count increased from 106 to 128 g/l and from 85 to 165×109/l, respectively; median chitotriosidase level decreased from 8303 to 1680 nmol/h/mL; median linear size of length and width of the spleen decreased by 54.5% and 40.0%, respectively, and the right lobe of the liver by 15%; parameters of physical development (height and weight) improved and median bone mineral density Z-score for the lumbar spine increased from -1.3 to -0.3. In group II: basing on the answers of children and parents, a statistically significant improvement (p0,05) of physical, emotional, and social functioning and the total score of quality of life was observed in 17 children aged 5−18 years; according to the parents’ answers, the increase of physical functioning was detected in 8 children aged 2−4 years.Conclusions: The timely appointment of ERT with imiglucerase in adequate dose and the regular infusion regime allows achievement of the key points of the treatment within 3 years and significant improvement of the quality of life parameters in children with GD type 1 in a year.
EXPERIMENTAL AND CLINICAL RATIONAL FOR TERAHERTZ THERAPY AT THE FREQUENCY OF MOLECULAR OXYGEN AND NITROGEN OXIDE ABSORPTION AND EMISSION IN DIFFERENT PATHOLOGIES
Authors: Svistunov A. A. , Tsymbal A. A. , Litvitskiy P. F. , Budnik I. A.
Published: November 2017

Most of the abiotic environmental factors are electromagnetic in nature. Electromagnetic radiation from various artificial sources exerts a significant inf luence on living systems. It poses a problem of targeted application of electromagnetic waves in health care, ever yday life, and industr y. Recently, a fundamentally new direction in medicine has emerged: the use of low-power terahertz electromagnetic waves at the frequency of oscillation of active cellular metabolites (nitrogen oxide, molecular oxygen, etc.) for disease treatment and prevention. It has been demonstrated that if there is a match in frequency bet ween the emitted electromagnetic wave and the natural oscillation of the molecule, absorption occurs and this alters the amplitude of the molecular oscillation and modifies involvement of the molecule in the metabolic process. This fact is of great interest for biomedical technologies because cellular metabolites may significantly affect regional circulation, microcirculation, and blood rheology; prevent intravascular coagulation; provide anti-inf lammator y and analgesic effects; limit excessive lipid peroxidation and potentiate the antioxidant mechanism; activate cellular anti-stress mechanisms. Today,  terahertz electromagnetic radiation at the frequency of oscillation of nitric oxide, a universal cellular regulator y molecule, has been shown to be beneficial in the treatment of cardiovascular diseases, burns, polyneuropathy, regional pain syndrome, etc. This review summarizes clinical and experimental data on implementation of terahertz electromagnetic waves in medicine and presents our current understanding of the mechanisms of action of terahertz electromagnetic waves at the frequency of oscillation of active cellular metabolites on a living system at the molecular, cellular, tissue, and organ levels of organization.
TENDENCIES OF INFANTILE AND CHILD MORTALITY IN THE CONDITIONS OF IMPLEMENTATION OF THE MODERN STRATEGY OF DEVELOPMENT OF HEALTH CARE OF THE RUSSIAN FEDERATION
Authors: Baranov A. A. , Namazova- Baranova L. S. , Albitsky V. Yu. , Terletskaya R. N.
Published: November 2017

Development of maternity and childhood protection service is one of the priorities of the Ministry of Health of the Russian Federation. The strategy for its development is included in the National plan of action for the benefit of children formulated according to the international documents on the rights of a child. The preservation of life and health of children under 5 years has been identified as an important strategic task for preserving life and health of the population as a whole. Tendencies of mortality in children under 5 years and infant mortality as a part of the data had been studied basing on the analysis of Federal State Statistics Service of the Russian Federation and World Bank data bases. It is shown that the reduction in mortality of children under 5 years occurred in all age periods. The level of infant mortality decreased significantly to the same extent due to neonatal and post-neonatal mortality. The leading causes for mortality in children under 5 years in general and infant mortality in particular are certain conditions originating in the perinatal period and congenital malformations which slow further reduction of the mortality in children in this age group. Significant reasons for death in children aged 1−4 years are injuries, poisonings, and oncologic diseases. The reserves of infant and child mortality reduction are found in implementation of prenatal and preimplantation diagnostics and «Prenatal consultation» organizational model; broader screening for congenital and hereditary metabolic diseases in the neonatal period including the most common nosological forms of rare (orphan) diseases; expansion of the National Vaccination Calendar; improvement of quality of prehospital medical care to children under the age of 1 year; further development of specialized, rehabilitative, and medical-social support.
GENOMIC ANALYSIS OF FOOD-BORNE STAPHYLOCOCCUS AUREUSCC30 STRAINS IN THE RUSSIAN FEDERATION
Authors: Abaev I. V. , Skryabin Yu. P. , Kislichkina A. A. , Korobova O. V. , Mitsevich I. P. , Mukhina T. N. , Bogun A. G. , Dyatlov I. A.
Published: November 2017

Staphylococcus aureus clonal complex (СС) 30 are associated with hospital-acquired and community-associated invasive infections and may cause outbreaks of staphylococcal food-borne infections (SFI).  In recent years, severe SFI outbreaks caused by S. aureus CC30 in cohorts not linked to high-risk groups have been detected in Russia.Aim: The aim of the study is to conduct a comparative genomic analysis of S. aureus strains B-7778 and B-7779 isolated during widespread SFI outbreak at the International Youth Forum Seliger in 2014, and S. aureus strains B-7738 and B-7739 isolated during widespread SFI outbreak among construction personnel in Saint Petersburg in 2013.Methods: Seliger-2014 S. aureus cultures were screened by PCR and sequence typing. S. aureus strains B-7778 and B-7779 were isolated from clinic material and from food handlers, respectively. Draft genome sequencing and phylogenetic analysis of S. aureus strains B-7778 and B-7779 were carried out. The production of enterotoxin A was determined by the enzyme immunoassay.Results: S. aureus strain B-7778 isolated from 38 patients and S. aureus strain B-7779 isolated from two food handlers at the Forum Seliger-2014 have identical nucleotide sequences, belong to spa-type t122 and sequence-type 30, and carry a set of toxin genes being responsible for SFI manifestations. The core-genome SNP typing has shown that S. aureus B-7738/ B-7739 (St. Petersburg, 2013) and S. aureus B-7778/ B-7779 (Seliger, 2014) belong to different clusters of S. aureus СС30 clade 3. S. aureus B-7778/ B-7779 not closely related with major clusters of S. aureus СС30. The production of enterotoxin A, SFI etiological factor, by S. aureus strains B-7738, B-7739, B-7778, and B-7779 has been confirmed.Conclusion: The genomic analysis of SFI-associated S. aureus strains isolated in Russia has been conducted for the first time. Two different genetic clones of S. aureus СС30 which are able to cause severe SFI outbreaks in cohorts not linked to high-risk groups have been identified and characterized. SNP typing of Seliger-2014 S. aureus genomes has revealed their genetic specificity among known strains of S. aureus CC30. Identified genome sequences of SFI-associated strains will be used for further studies S. aureus clones circulating through the food chain in Russia.
Non-uniform flow over cobble bed with submerged vegetation strip
Authors: Afzalimehr Hossein , Barahimi Mahboobeh , Sui Jueyi
Published: November 2017

To better understand the influence of non-uniform flow in coarse-bed streams with a submerged vegetation strip on flow characteristics, data were collected from experiments in a laboratory flume and field investigations in a cobble-bed river reach in central Iran. The results of the experiments and field observations showed that the velocity profiles for non-uniform flows in cobble-bed streams with vegetation strips can be divided into either two or three sub-zones. The velocity profiles of non-uniform flows in the laboratory flume and cobble-bed stream deviated from the log law in the wake and mixing zones, but fitted approximately in the log-law layer zone. The distribution of Reynolds stress for non-uniform flows was influenced by the vegetation strip and showed a non-concave shape. Near the channel bed, sweep motion occurred more frequently than the ejection process. Close to the top of vegetation strip, the correlation coefficient (ru′w′) was negative, indicating downward momentum transport due to sweep and ejection processes. However, ru′w′was positive near the water surface, indicating upward momentum by the vegetation strip due to inward and outward interactions. The study shows that laboratory results cannot be easily applied to natural rivers without considerable assumptions.
Monetary Policy and the Predictability of Nominal Exchange Rates
Authors: Eichenbaum Martin , Johannsen Benjamin K. , Rebelo Sergio
Published: November 2017

This paper documents two facts about countries with floating exchange rates where monetary policy controls inflation using a short-term interest rate. First, the current real exchange rate predicts future changes in the nominal exchange rate at horizons greater than two years both in sample and out of sample. This predictability improves with the length of the horizon. Second, the real exchange rate is virtually uncorrelated with future inflation rates both in the short run and in the long run. We show that a large class of open-economy models is consistent with these findings and that, empirically and theoretically, the ability of the real exchange rate to forecast changes in the nominal exchange rate depends critically on the nature of the monetary regime.
Common Factors, Trends, and Cycles in Large Datasets
Authors: Barigozzi Matteo , Luciani Matteo
Published: November 2017

This paper considers a non-stationary dynamic factor model for large datasets to disentangle long-run from short-run co-movements. We first propose a new Quasi Maximum Likelihood estimator of the model based on the Kalman Smoother and the Expectation Maximisation algorithm. The asymptotic properties of the estimator are discussed. Then, we show how to separate trends and cycles in the factors by mean of eigenanalysis of the estimated non-stationary factors. Finally, we employ our methodology on a panel of US quarterly macroeconomic indicators to estimate aggregate real output, or Gross Domestic Output, and the output gap.
The Psychology of Yoga Practitioners: A Cluster Analysis
Authors: Genovese Jeremy E. C. , Fondran Kristine M.
Published: November 2017

Yoga practitioners (N = 261) completed the revised Expression of Spirituality Inventory (ESI) and the Multidimensional Body-Self Relations Questionnaire.

Cluster analysis revealed three clusters:

Cluster A scored high on all four spiritual constructs. They had high positive evaluations of their appearance, but a lower orientation towards their appearance. They tended to have a high evaluation of their fitness and health, and higher body satisfaction.

Cluster B showed lower scores on the spiritual constructs. Like Cluster A, members of Cluster B tended to show high positive evaluations of appearance and fitness. They also had higher body satisfaction. Members of Cluster B had a higher fitness orientation and a higher appearance orientation than members of Cluster A.

Members of Cluster C had low scores for all spiritual constructs. They had a low evaluation of, and unhappiness with, their appearance. They were unhappy with the size and appearance of their bodies. They tended to see themselves as overweight.

There was a significant difference in years of practice between the three groups (Kruskall -Wallis, p = .0041). Members of Cluster A have the most years of yoga experience and members of Cluster B have more yoga experience than members of Cluster C.

These results suggest the possible existence of a developmental trajectory for yoga practitioners. Such a developmental sequence may have important implications for yoga practice and instruction.
Clinical profile of patients with allergic contact dermatitis attending tertiary care hospital
Authors: Kalyanrao Y. Guruprasad , Nagure Ashok Kumar B.
Published: November 2017

Background: Contact dermatitis is an inflammatory response of the skin to various antigens and irritants. It accounts for a formidable proportion of dermatological consultations. It accounts for a formidable proportion of dermatological consultations. It is associated with significant morbidity, and it is one of the most common reasons for workmen’s compensation claims for skin diseases.

Methods: The Methodology included detailed history especially of potential sensitisers in the environment, occupation, hobbies, any contact with external application of cosmetics, drugs, ointments. Emphases on past history were recorded regarding the mode of presentation, progression, medication taken and their effect on allergic contact dermatitis.

Results: Allergic contact dermatitis due to Parthenium hysterophorus accounts for 80 (64%) cases, allergic contact dermatitis due to wearing apparel and jewellery accounts for 21 (16.8%) cases, due to topical medicaments 10 (8%), allergic contact dermatitis due to cosmetics and occupational (professional) antigen constituting 7 (5.6%) each.

Conclusions: The most common and important mode of contact is from the pollen or dried leaf fragments flying in the air which settles on the skin, clothes and induces allergy which is known as Air borne contact dermatitis, this is more common in men, outdoor professions or those who spent more time in outdoor including froresters, labourers, engineers, sports person, hunters, gardeners and farmers.
Síndrome hepatopulmonar en pediatría. Serie de casos y revisión de la literatura
Authors: López-Birlain Luis , Cuevas-Schacht Francisco Javier , Gutiérrez-Morales Gabriel , Alva- Chaire Adriana del Carmen
Published: November 2017

El síndrome hepatopulmonar es una entidad poco frecuente en la población pediátrica, con una incidencia desconocida en México. Su diagnóstico supone un verdadero reto para el clínico, debido a la amplia gama de causas de hipoxemia en los pacientes con hepatopatías crónicas. Se presentan dos casos de pacientes diagnosticados con síndrome hepatopulmonar mostrando la variabilidad en la presentación y evolución del mismo; una paciente con hepatopatía crónica secundaria a una enfermedad autoinmune (lupus eritematoso sistémico) con una evolución tórpida, y otra paciente con diagnóstico de hepatopatía, posterior al inicio de la sintomatología respiratoria. En ambos casos el tratamiento ideal consistiría en trasplante hepático; sin embargo, éste no pudo realizarse debido a la dificultad para el acceso al mismo en nuestro país.
Cambiando los paradigmas de la infección por M. pneumoniae en pediatría
Authors: Merida-Vieyra Jocelin , Aquino-Andrade Alejandra , Ribas-Aparicio Rosa María , De Colsa-Ranero Agustín
Published: November 2017

La neumonía atípica es un término que originalmente se utilizó en pacientes adultos que presentaban neumonías de curso atípico, generalmente leves y de evolución benigna, que eran causadas por agentes como: Mycoplasma pneumoniae, Chlamydophila pneumoniae y Legionella pneumophila. En población pediátrica la presentación, tanto clínica como epidemiológica, de las neumonías por M. pneumoniae merece una especial atención ya que no siempre son cursos benignos y pueden existir numerosos cuadros extrapulmonares asociados; el proceso diagnóstico es complejo y poco diferencial de otros agentes etiológicos. Recientemente ha llamado la atención la emergencia de la resistencia a macrólidos en algunos países del mundo, por lo que existen controversias respecto al tratamiento. Estudios numerosos realizados a nivel mundial, particularmente derivados de países asiáticos, han generado nueva información en relación al comportamiento biológico, clínico, epidemiológico, radiológico y respuesta terapéutica de M. pneumoniae en pacientes pediátricos.
Abordaje citogenético y citogenómico de pacientes con discapacidad intelectual y malformaciones congénitas
Authors: Yokoyama-Rebollar Emiy , Frías Sara , Del Castillo-Ruiz Victoria
Published: November 2017

La discapacidad intelectual (DI) o retraso mental tiene una prevalencia del 2-3% en la población general y se define como una alteración del neurodesarrollo que inicia antes de los 18 años. Se caracteriza por limitación importante en el funcionamiento intelectual y en el comportamiento adaptativo en áreas como comunicación y uso de fuentes para la misma, autocuidado, relaciones sociales o interpersonales, autodirección, funciones académicas, salud y seguridad.1,2 La DI se determina por un coeficiente intelectual (CI) menor de 70 puntos mediante escalas como la International Classification of Diseases (ICD-10), Diagnostic and Statistical Manual of Mental Disorders (DSM V) y la clasificación World Health Organization (WHO).
CPI Welcomes Carol Lee's Special Issue
Authors: Abdi Ali , Abdi Ali
Published: November 2017

CPI Welcomes Carol Lee’s Illustrated Anthology of Poetry:No ReturnCarol Lee’s Special Issue is well timed given the magnitude of the recent natural disasters experienced in several tropical and subtropical parts of North America, as well as in south Asia, and the toll on human lives as millions are forced to relocate or flee their homes and seek asylum elsewhere because of wars, persecution, and discrimination. With clarity and precision, Lee’s Special Issue, unapologetically specifically questions, responses by leaders and citizens in northern nation-states to impacts of man-made and natural disasters and tragedies, especially in the south.
Transformative Pedagogy Through Strong Poetry
Authors: Lee Carol M.
Published: November 2017

AbstractIn No Return, a refugee story in poems, the author reflects on the critical stance of art, particularly, language as art.  The anthology uses an eclectic set of methodological tools drawn from critical discourse and literary analyses, and as importantly, it incorporates critical pedagogy theory.  This article consists of two parts.  The first is a literary deconstruction of the introductory poem in the story.  In part two, the author argues cogently that as researchers, educators, and creative writers we share collective responsibilities for the words we use and the stories which we tell; furthermore, the author reminds us that stories are the agents of pedagogy.Keywords:  refugee, pedagogy, art, critical stance, poetry, strong poetry
RAZMATRANJE MOGUĆNOSTI PRIMENE „SCAFFOLDING“-A U SAVREMENOM VASPITNO-OBRAZOVNOM PROCESU
Authors: Nevena Bulajić
Published: November 2017

„Scaffolding“[1] je savremeni pedagoški pristup koji su uveli Wood i saradnici (1976) pokušavajući da, polazeći od pedagoških pogleda Lava Semjonoviča Vigotskog, utvrde najvažnije komponente podučavanja. Promene u novom veku utiču na demografski profil ranog detinjstva koji se u učionici brzo menja, te je neophodno i naše teorije, ideje i vaspitno-obrazovnu praksu menjati. Jedna od najvećih debata u oblasti ranog detinjstva jeste definisati ulogu usmerenog nastavnika u pristupu koji dete stavlja u centar vaspitno–obrazovnog procesa. Razmatranjem suštine „scaffolding“-a, zasnovanog na interakciji, ko-konstrukciji, intersubjektivnosti i značaju uloge odraslog u maksimalizaciji detetovih potencijala i razvoju metakognicije u različitim domenima razvoja (kognitivni, socijalni, emocionalni, fizički i domen jezika), ukazujemo na njegovu pedagošku vrednost i valentnost. Brojne protivrečnosti postmodernog poimanja detinjstva ukazuju na potrebu za pedagoškim pristupom zasnovanim na širokom polju intersubjektivnosti, koji pretpostavlja upravo primenu “scaffolding“-a. Analizom raspoložive naučno-istraživačke građe, upotpunjujemo u literaturi najčešće prisutno shvatanje “scaffolding“-a, kao procesa u kojem se detetu u podržavajućem okruženju obezbeđuju izazovni zadaci i aktivnosti kojima se podstiče njegova sposobnost samostalonog rešavanja problema. Povodom toga, otvaramo pitanje o mogućnosti njegove integracije u našu pedagošku praksu i adekvatnog prevoda termina na našem jeziku u cilju njegovog lakšeg prihvatanja, poimanja i upotrebe u pedagoškoj teoriji i praksi.

 

[1] Termin „scaffolding“ su prvi put uveli sledbenici Vigotskog, Wood, Bruner i Ross (Berk, Winsler, 1995: 20) razvijajući njegovu teoriju. Ovaj termin  našao se posebno pogodnim za slikoviti opis procesa “podupiranja” učenja i razvoja u okviru zone narednog razvoja, o kojem je govorio Vigotski sa stanovišta saradnje deteta sa odraslom osobom (vaspitač, učitelj, nastavnik, roditelj, sposobniji vršnjak). U doslovnom prevodu na srpskom jeziku označava „skele“ i ova metafora konotira  veoma specifičan sistem socijalne podrške za detetove napore, koji je brižljivo podešen prema njihovim potrebama (Berk, Winsler 1997: 20). U literaturi na našem govornom području srećemo prevod: „vođena participacija“ i „aproprijacija“ (Slunjski 2012: 108-113). Međutim, zbog  neadekvatnog jezičkog prevoda, koji ne obuhvata sve elemente ovog pristupa, koje ćemo dalje razmatrati, zadržavamo termin “scaffolding” u tekstu koji najviše odgovara kontekstu o kojem je reč.
Influence of Nanoscaled Surface Modification on the Reaction of Al/Ni Multilayers
Authors: Bartsch Heike , Mánuel José Manuel , Grieseler Rolf
Published: November 2017

Sputtered reactive multilayers applied as a heat source in electronic joining processes are an emerging technology. It promises low-stress assembly of components while improving the thermal contact and thus thermal resistance. The use of nanostructures can significantly enhance the adhesion and reliability of joints between different materials. This work presents a phenomenological proof of the hypothesis. Reactive multilayers of nickel and aluminum directly deposited on nanostructured surfaces of silicon wafers and reference samples with flat surface are compared. The investigation of the self-propagating reaction shows a clear influence of the layer thickness, dependent on the multilayer thickness and nanostructure morphology. Rapid thermal annealing results in the formation of Al1.1Ni0.9 phase. The necessary annealing temperature is much higher than this applied for nanofoils, sputtered multilayer or particles. The nanostructured interface seems to hinder the full transformation of the present nickel. On the other hand, the surfaces modification improves adhesion of the formed alloy on silicon surfaces and can thus reduce the strength of joints based on reactive aluminum/nickel multilayer . The use of nanostructured surface modifications is thus a promising approach to realized reliable multi-material joints in complex systems.
RELATIONSHIP BETWEEN CONVERGENT-DIVERGENT THINKING CHARACTERS AND MIND MAP
Authors: Junaidi -
Published: November 2017

This study aims to evaluate the mind mapping material in creativity course syllabus. The test is performed to see the students' convergent-divergent thinking characters. The treatment of the accounting mind map using numerical symbols was given to students before and after the thinking character tests. The test used paired sample t-test, Wilcoxon, and Chi-Square. The test result proves that there is an increase of students' divergent thinking character after given the material of accounting mind map using numerical symbols compared to before treatment. However, there is no difference of convergent thinking characters in class C before and after treatment.
A New Enhanced Oil Recovery Approach for Clayey Sandstone Reservoirs Using Sequential Injection of Chelating Agent Solutions with Different Concentrations
Authors: Mahmoud Ahmed Abdulhamid , Al-Hashim Hasan
Published: November 2017

Enhanced oil recovery (EOR) techniques are very expensive processes especially in harsh reservoir environment such as high temperature, pressure and salinity as the applications of classical EOR techniques have been limited to certain reservoirs. This work is aimed to design a cost effective EOR technique utilizing Ethylenediaminetetraacetic acid (EDTA) chelating agent solutions prepared using undiluted seawater (57k ppm).

Chelating agents have been used in petroleum industry as matrix stimulation fluids because of their ability to dissolve calcite and chelate the interlayer cations of clay minerals especially (Fe+3 and Ca+2) and keep them in solution without any significant precipitation. Recently, coreflood tests of sandstone core samples using EDTA solutions revealed significant increase in oil recovery during the tertiary mode. This paper presents a new approach to optimize oil production and minimize the injection pressure needed to flood sandstone reservoirs by injecting chelating agent solutions prepared in seawater without dilution with moderate to high pH levels and optimized concentrations in a sequential form after conventional waterflooding starting with small concentration followed by higher concentrations. The main objective of this approach is to optimize the concentrations and pH of the EDTA chelating agent solutions prepared in undiluted seawater for better oil recovery and improved injectivity using sandstone core samples. Coreflood tests at 100°C were conducted using Gray Berea sandstone core samples.

Coreflood results showed incremental oil recovery of about 15% of OOIP when the samples were flooded by the 5wt% chelating agent solution. The pressure drop during the flooding sequence confirmed that there was no damage due to clays detachment and migration or calcite dissolution at the experiments conditions of pH higher than 9.75 and EDTA concentration of 5wt% or less in undiluted seawater for Gray Berea sandstone samples.

A cost effective EOR fluid system having optimum chelating agent concentrations and pH have been designed to function as surface chemistry agents for alteration of sandstone rock wettability to a more water-wet conditions, and hence, can be used as EOR fluids.
Organic Matter Variability in the Early Silurian Qusaiba Source Rocks, Saudi Arabia
Authors: Hayton Shaun , Jaeger Hartmut
Published: November 2017

Regionally extensive organic-rich shales characterize the lower section of the Early Silurian Qusaiba Member, Qalibah Formation. These shales are believed to have acted as the primary Paleozoic petroleum systems source rock in Saudi Arabia. Based on the interpreted paleoenvironmental/chronostratigraphic variability of these organic-rich hot shales (Hayton et al., 2017), significant variation in the organic matter (OM) composition is expected to be present within these source rocks. With notable exceptions including Cole (1994) and Abu-Ali (2005), most of the OM typing work on the Qusaiba Member source rocks has been largely inferred from bulk geochemical analysis. OM typing inferred from bulk geochemistry (e.g. Rock-Eval) is undoubtedly useful, but as it is a weighted average of the mixture of the individual OM components, organic petrography is required to understand the actual OM composition.

Organic petrography conducted on 47 Qusaiba Member core samples from eight wells across the Kingdom identified 5 major groups of OM: (1) aquatic palynomorphs, like acritarchs (strongly fluorescent), (2) terrestrial palynomorphs, like cryptospores (moderately fluorescent), (3) structureless brownish organic matter (BOM), (4) graptolites and chitinozoa (nonfluorescent), and (5) inertinite and black degraded OM (nonfluorescent). Most samples are dominated by partially intensely degraded, nonfluorescent BOM. In one well much of the BOM shows intense fluorescence, indicating significant quantities of hydrogen-rich OM in this well. In all other wells the abundance of hydrogen-rich OM (group 1 and 2) is usually less than 5% each. As expected, given the observed variation in graptolite occurrence on bedding planes in core, group 4 OM abundance is highly variable.

This is the first study aimed at quantifying the variability in the nature of the OM within the Early Silurian source rocks of Saudi Arabia. The findings show that there is significant variability in the nature of the OM, both laterally and chronostratigraphically. Therefore, great care needs to be taken to ensure that geochemical and especially kinetics work on Qusaiba source rocks takes into account this variability, as this will have significant impact on volumetric resource calculations when integrated with basin modeling.

The identification of BOM as the dominant type of OM in the Qusaiba Member means that this organic matter (of hitherto unknown biological affinity) has played a major role in controlling the hydrocarbon generative potential of these source rocks. This highlights the need for further work to understand its primary composition, biological precursor, and hydrocarbon generative potential. Future work will continue to explore for ways to link the organic matter composition to the chronostratigraphy, so that the organic matter composition and correspondingly the hydrocarbon generative potential of the organic-rich shales of the Qusaiba Member can be determined in a predictive manner to support exploration activities.
Application of Nanoparticle Aided Silicate Reservoir Conformance Control Method at the Algyo Field, Hungary: Fundamentals and Case Histories
Authors: Lakatos I. , Szentes G. , Vago A. , Karaffa Z.
Published: November 2017

Reservoir conformance control (RCC) might be fundamental designing profitable production technology in oilfields. Appropriate application of RCC methods can significantly result in improved IOR/EOR through reduced water production and profile correction. In the past decades, numerous techniques were extensively applied with these goals; however, the operators did not appreciate the silicates until mid-1970s despite the fact that emblematic professionals proposed the silicate gels as efficient alternatives to organic gel technologies. Recently, the attitude towards the extensive use of silicates in oilfields has changed. The silicate-based water shutoff treatments and profile control methods have been already used more than hundred times in Hungary, Serbia, Norway, USA, Oman, and other countries. In the past several years, the fundamental and applied research focused on elimination of inherent negative properties of pure silicate gels, and development of efficient and flexible technologies using polymers and nanosilica in the treating solutions. As a result, the diverse silicate RCC methods arouse high interest in oilfield applications. Today, the environmentally friendly composition of the chemical systems, viz. the green technologies are particularly appreciated by the operators.

The presentation summarizes the results of both the fundamentals and a pilot tests accomplished in the Algyő field, and critically analyzes the lessons to learn. Base on the publications disseminated until now it can be concluded that these field jobs demonstrate outstanding responds both in water cut and increased oil rate. It was also proved that the nanoparticle-induced (nucleated) formation of silicate gels could potentially be used in all types of porous and fractured reservoirs. In addition, the in-situ formed gels have outstanding thermal stability up to 150°C, the chemicals are mass-produced and available at low price, the job needs simple surface facilities, and customary human force to operate the RCC method. Consequently, the green silicate methods being low OPEX and CAPEX expenditure, the technology may open new vistas curing numerous problems arising at both oil and gas fields even in time of volatile oil and gas price.
Inverted ESPs Actuating: Water Cone Control, Oil Production Increase, and Produced Water Subsurface Disposal - North Kuwait Case Study
Authors: Al-Maqsseed N. H. , Anthony E. P. , Elaila S. Z. , Areekat M. , Fox M.
Published: November 2017

Inverted Electrical Submersible Pumps (ESPs) are considered to be a relatively young addition to the Artificial Lift portfolio, and were solely used for unnatural Dumflooding (DF) purposes, where the injection zone is located below the source zone, i.e. requiring the pump discharge to be positioned at the bottom of the assembly and the intake evidently on top. Few inverted-ESP-DF applications have been analyzed or reported. Accordingly, operators and technology providers have yet a lot to venture through and improve; in the aspects of inverted ESP design enhancements and concept utilizations. KOC's – North Fields are the first to actuate Cone Control Completions (CCCs) via inverted ESPs; attaining affectability levels never before achieved using conventional technologies. The concept of Cone Control technology is to create a pressure drawdown (ΔP), just below the Oil Water Contact (OWC), marginally higher than the ΔP across the perforated interval within the Oil leg. This drawdown retards the progression of the water cone, and can best be achieved using an inverted, bottom-discharge high-volume ESP. Inverted ESPs were selected after the limited success achieved from utilizing a shrouded conventional ESP with Y-tool in the original CCC implementation at KOC's - North Fields. The major limitations with this ESP configuration were casing size (can only be used in 9⅝" casings and larger; smaller casing sizes implied smaller ESP series of lower rate attainments), and injection rate restrictions (limited to 4,500 BPD, beyond which shroud erosion is expected). Inverted ESP's eliminated both constraints, and added the advantage of being shorter and more compact (as they are operating with gravitational forces), suitable for wells with higher dogleg severities. CCC can, here-by, be considered an emerging technology for improved oil recovery from water drive reservoir; as an effective tool for the retardation or above-OWC-reverse of vicious water cones.
The impact of the deferred tax adjustment on the Economic Value Added (EVA) measure
Authors: Naicker Melissa
Published: November 2017

Economic Value Added (EVA) is a value-based accounting measure used by companies to measure the amount of value created for shareholders. EVA requires the conversion of accounting values to economic values. This conversion process is known as the EVA adjustment. If accounting values are not converted to economic values, the value of the EVA can be distorted. Previous studies have shown that companies are experiencing difficulties in implementing EVA adjustments. To reduce these difficulties, companies have decided to limit their EVA adjustments to ten or even fewer. The research problem is that if the appropriate adjustments are not made, an inaccurate EVA measure will be calculated.
The aim of the research is to measure whether deferred taxes impact EVA. The study is conducted within a quantitative research paradigm. Secondary data analysis was carried out on JSE-listed food producers over a seven-year period, from 2004 to 2010. The unadjusted EVA was compared to the adjusted EVA measure to determine the before and after effects of deferred taxes on EVA. The findings of the study revealed that deferred taxes either understated or overstated the value of the EVA during the period 2004–2010. In addition, the results from the regression analysis revealed an overall significance for all deferred tax predictors. The results from the study showed that deferred tax had a significant impact on the value of EVA. Therefore, the study recommends that companies implement the deferred tax adjustment on EVA.
“VelaMente?!” - Sailin in a Crew to Improve Self-Efficacy in People with Psychosocial Disabilities: A Randomized Controlled Trial
Authors: Sancassiani Federica , Cocco Alessio , Cossu Giulia , Lorrai Stefano , Trincas Giuseppina , Floris Francesca , Mellino Gisa , Machado Sergio , Nardi Antonio Egidio , Fabrici Elisabetta Pascolo , Preti Antonello , Carta Mauro Giovanni
Published: November 2017

Introduction:

It has been proposed that sailing can improve quality of life, personal and social skills of people with severe psychosocial disabilities. This study aimed to assess the efficacy of a psychosocial rehabilitative intervention focused on sailing on quality of life, self-efficacy and sense of coherence in people with severe psychosocial disabilities.

Methods:

The study was a randomized, with parallel groups, waiting-list controlled trial. Participants were 51 people with severe psychosocial disabilities. The intervention was a structured course to learn sailing in a crew lasting three months. A randomized group began the sailing course immediately after a pre-treatment assessment; the waitlist group began the sailing course after a three months period of treatments as usual. Participants were assessed before and after the sailing course, or the waiting list period, on the General Self-Efficacy scale (GSES), Sense Of Coherence scale (SOC) and Health Survey-short form (SF-12).

Results:

Self-efficacy significantly increased after the sailing course and decreased after treatment as usual (p=0.015). Sense of coherence and the levels of quality of life tended to improve after the sailing course, albeit below levels of statistical significance.

Conclusion:

When compared to more traditional psychosocial rehabilitative activities, an intervention focused on sailing in a crew positively impacts the sense of coherence and the levels of quality of life and significantly improves self-efficacy of people with severe psychosocial disabilities. Further longitudinal research is required.