bluuebunny/crossref_metadata_2025 huggingface dataset:
Engineered cartilage tissue from biodegradable Poly(ε-caprolactone) scaffold and human umbilical cord derived mesenchymal stem cells
Authors: Nguyen Phuc Dang-Ngoc , Vu Ngoc Bich , Le Ha Thi-Ngan , Dao Thuy Thi-Thanh , Gia Long Xuan , Pham Phuc Van
Published: February 2018

Introduction: Cartilage injury is the most common injury among orthopedic diseases. The predominant treatment for this condition is cartilage transplantation. Therefore, production of cartilage for treatment is an important strategy in regenerative medicine of cartilage to provide surgeons with an additional option for treatment of cartilage defects. This study aimed to produce in vitro engineered cartilage tissue by culturing and differentiating umbilical cord derived mesenchymal stem cells on biodegradable Poly(ε-caprolactone) (PCL) scaffold.

Methods: Human umbilical cord derived mesenchymal stem cells (UCMSCs) were isolated and expanded according to previous published protocols. UCMSCs were labeled with CD90 APC‑conjugated monoclonal antibody (CD90-APC) and then seeded onto porous PCL scaffolds. Cell adhesion and proliferation on PCL scaffolds were evaluated based on the strength/signal of APC, MTT assays, and scanning electron microscopy (SEM). The chondrogenic differentiation of UCMSCs on scaffolds was detected by Alcian Blue and Safranin O staining.

Results: The results showed that UCMSCs successfully adhered, proliferated and differentiated into chondroblasts and chondrocytes on PCL scaffolds. The chondrocyte scaffolds were positive for some markers of cartilage, as indicated by Alcian Blue and Safranin O staining.

Conclusion: In conclusion, this study showed successful production of cartilage tissues from UCMSCs on PCL scaffolds.
TILKA Educational Model and Nonviolent Communication
Authors: Mikolič Vesna
Published: February 2018

The aim of the article is to present the development of the TILKA educational model.  This new L1 and L2 teaching model integrates language and literature teaching through research and activity, as well as principles and methods of intercultural education and transactional analysis. Our main research question during the model development was how can nonviolent communication be included into the intercultural language teaching. The analysis of various discourses (science, tourism, politics, literature) with regard to intensity modification has shown that verbal aggressiveness can be related to the expression of intensity modification. Building the competence of nonviolent communication with the use of specific intensity modificators can be included into the language teaching model as one of the most important intercultural goals.   Keywords: drama triangle; intensity modification; intercultural education; language and literature teaching; transactional analysis.
Fertilización complementada con sílice en la resistencia del tomate a Fusarium oxysporum Schtdl.
Authors: García-Ramos Yolanda , Galindo-Tovar María Elena , Murguía-González Joaquín , Landero-Torres Ivonne , Leyva-Ovalle Otto Raúl
Published: February 2018

Tomato production stands in first place worldwide. This fruit presents benefits as an antioxidant and is widely used in the Mesoamerican cuisine. In this crop, Fusarium oxysporum causes one of the principal diseases that produce wilting and plant death. In fertilizers use, it is known that application of silica improves resistance to diseases. The objective of this work was to evaluate the effect of fertilization supplemented with silica on resistance of tomato to F. oxysporum. In Peñuela, Veracruz, Mexico, from April to July 2015, doses recommended by the manufacturer, and also one 20% lower and other 20% higher of PSD, Silifertidol Ultra y Fosfosilidol fertilizers were applied to tomato plants. The benefit of silica in plant growth was significantly associated with fertilizer sources and the applied doses. The best result was observed when doses 20% higher than the recommended, were applied, and Cid F1 variety was more susceptible to F. oxysporum. The fertilizer with the best results on the severity and incidence was PSD, and best growth was observed when silica was applied at between 33 and 40%. This investigation reached as a conclusion that the application of fertilizers supplemented with silica, resulted in an improved growth of tomato plants and an increased resistance to F. oxysporum, due to the increase in photosynthetic activity and thickness of the cuticle.
Variabilidad patogénica de Colletotrichum lindemuthianum y resistencia en germoplasma de Phaseolus vulgaris L. de Ecuador
Authors: Rodríguez-Ortega Diego , Vega-Jiménez Laura , Murillo-Ilbay Ángel Rubén , Peralta-Idrovo Eduardo , Rosas-Sotomayor Juan Carlos
Published: February 2018

Anthracnose caused by Colletotrichum lindemuthianum is one of the most economically important diseases of bean (Phaseolus vulgaris L.) cultivation in Ecuador. The best control alternative is the use of resistant varieties. C. lindemuthianum presents great pathogenic variability, which hinders the development of varieties with a lasting resistance, therefore, the knowledge of the presence and distribution of the physiological races of the pathogen and the identification of resistance genes are key to developing varieties with broad and lasting resistance. The objective of this research was to determine the pathogenic variability of C. lindemuthianum and to evaluate the resistance of Ecuadorian bean germplasm. The research was carried out between 2013 and 2014. Seventeen isolates of C. lindemuthianum from northern central Ecuador were characterized by the inoculation of a group of twelve standard differential bean varieties. Among the analyzed samples, thirteen races were identified; five of those races had not been previously reported in the country. The differential G2333 (Co-42, Co-52 and Co-7) presented resistance to every characterized races in Ecuador. In addition, twenty - one improved varieties and elite bean lines were evaluated with sixteen of the seventeen isolates, three genotypes were identified (TB2, TB3 and INIAP 485 Urcuquí) with resistance to the mentioned isolates, which can be used as sources of resistance to Anthracnose. The identified sources of resistance in this study will allow to plan the development of bean varieties with broad and durable resistance to C. lindemuthianum.
Factores genéticos y ambientales que inciden en lesiones podales del ganado lechero en Costa Rica
Authors: Solano-López Marvin , Vargas-Leitón Bernardo , Saborío-Montero Alejandro , Pichardo-Matamoros Derling
Published: February 2018

Foot injuries are one of the most important health problems in dairy herds. The objective of this study was to evaluate the effect of genetic and environmental factors on the occurrence of foot injuries (FI) in Costa Rica’s dairy cattle. A total of 130 844 cows (417 895 lactations) from 358 herds users of the VAMPP (Veterinary Automated Management and Production control Programme) software were analyzed between 1990 and 2015. The frequency of FI reports was 16.7% and 7.0% per cow and lactation, respectively. The most frequent FI were white line separation (34.3%), laminitis (13.0%), and sole ulcer (12.8%). FI was analyzed by a logistic regression, which determined significant effects of the following factors: zone, herd within zone, calving number, racial type, period and calving month, lactation stage, herd size, and the cow random effect. Cows with the highest propensity to suffer FI events came from the humid premontane forest zone (OR=1.76), were in the fourth calving (OR=1.29), Holstein breed (OR=1.77), calved between 1995 and 1999 (OR=1.73), April (OR=1.20), were in the second month of lactation (OR=22.2), and came from herds with at least 100 cows (OR=1.22). The heritability for FI, estimated by linear and threshold models, were 0.02±0.002 and 0.05±0.004, respectively; and the repeatability estimates were 0.03±0.001 and 0.05, respectively. Cows with FI presented 16.1 additional days open. There is a high impact of this disease in the evaluated dairy herds.
Physiotherapy clinical education in Australia: Development and validation of a survey instrument to profile clinical educator characteristics, experience and training requirements
Authors: Newstead Clint , Johnston Catherine , Nisbet Gillian , McAllister Lindy
Published: February 2018

Clinical education (also termed “clinical supervision”) is essential for entry-level physiotherapy student training. Physiotherapists providing clinical education have a vital role in facilitating student learning and assessing performance, however research suggests that many assume this role due to willingness, availability or expectation rather than skills or experience. There is a lack of literature internationally describing the involvement of physiotherapists in clinical education, and currently no valid and reliable survey instrument with which to collect this information. The purpose of this study was to develop and validate a survey to explore physiotherapy clinical education in Australia. A draft online survey was developed and reviewed by expert physiotherapists, clinical education managers and clinical educators to ensure face and content validity. Following revision, physiotherapists employed in various healthcare facilities pilot-tested the survey. Survey utility and internal consistency were then evaluated. The final survey has 39 questions in five sections with categorical, Likert and free text response options. Internal consistency of the variables in the two Likert scale questions was acceptable (Cronbach’s alpha: 0.98 and 0.97, respectively). A valid and reliable survey has been developed and can be used to profile the professional characteristics of physiotherapy clinical educators, perceived barriers and training requirements related to the provision of clinical education.
Problematizing medical students with disabilities: A critical policy analysis
Authors: Shrewsbury Duncan , Mogensen Lise , Hu Wendy
Published: February 2018

This article was migrated. The article was marked as recommended. Background: Ensuring diversity, and that the medical profession is representative of the varied communities it serves is a worldwide equity concern. The widening participation movement in higher education aims to attract more students from non-traditional backgrounds into university. Yet, there is persistent under-representation of students with disabilities in medical education, and subsequently, the profession. The inclusion of these students is greatly influenced by the policies which regulate and accredit medical schools, which demand that educators consider students with disabilities as future doctors. While these policies may aim to promote inclusion, they may also have unintended consequences. In this paper we critically analyse key policies in undergraduate medical education to examine how disability in medical students is represented and problematized, and the educational implications of such representations. Method: Key policies concerning medical school accreditation and educational standards from the General Medical Council (UK), Australian Medical Council (Australia) were selected for analysis. Carol Bacchi's 'What's the Problem Represented to Be?' six critical questions approach was applied to conduct a critical interpretive analysis of how disability is problematized in these policies. Findings: Our analysis revealed a distinctive construction of disability in medicine, supported by themes of containment of disability, disability and competence, and disability and risk. Disability is framed as risk and potential educational burden for schools which must adapt practices to meet legal requirements. Risk is conceptualised as a quality of individuals, rather than being constructed through interactions between persons and environments. The ways in which disability is problematized relates to presuppositions which have the effect of restricting access for learners with disabilities. Conclusions: The policies which regulate medical education can inadvertently limit inclusion of students with disabilities by being silent on the value of a diverse medical workforce. Bacchi's six critical questions are an accessible and practical method for identifying the norms and assumptions which may impede change in educational policy and practice. By making visible these hidden suppositions and their consequences for learners, their impact may be ameliorated, and progress made.
Effect of admixtures on the behaviour of lightweight concretes
Authors: Al-Sibahy Adnan , Edwards Rodger
Published: February 2018

This paper presents an experimental investigation of the combined effect of a superplasticiser admixture and metakaolin material on the mechanical behaviour of expanded clay lightweight concrete containing recycled glass aggregate. The optimum dosage of the superplasticiser admixture (type SNF) was adjusted and used by weight of cement. The short- and long-term mechanical properties of concrete mixes were measured in accordance with the relevant British/EN standards. The results obtained were compared with the results of control concrete mixes (without superplasticiser). They showed that the superplasticiser admixture exhibited a 20% reduction in mixing water content. All measured values of unit weight, compressive and splitting tensile strengths increased when the superplasticiser admixture and metakaolin material were used. The concrete mix containing 30% recycled glass revealed an increase in the mechanical strength compared with the mix of 15% recycled glass. However, the workability of the superplasticiser concrete mixes was degraded, reaching 44% reduction in slump value.
José Eusebio Caro y Gregorio Gutiérrez González: variaciones de la poesía romántica colombiana en el siglo XIX
Authors: Sánchez Rueda Humberto
Published: February 2018

En este artículo se propone el análisis de la poesía de Gregorio Gutiérrez González y José Eusebio Caro, como eje que permite reflexionar algunos alcances, variantes y características de la poesía romántica colombiana del siglo XIX. Se analiza como la mezcla entre sensibilidad romántica, proyecto nacionalista y doctrina religiosa, constituye el germen del conflicto poético de la poesía nocturna de Gutiérrez y Caro; el cual determina sus limitaciones y mayores logros poéticos.
Dame tu canto ciudad: a subjetividade expressa entre ruas e casas na poesia de Marta Quiñónez
Authors: Rodrigues Gonçalves Ana Beatriz , Batista Martinhão Marcela
Published: February 2018

Este artigo trata sobre a experiência da mulher negra escritora com o espaço público que a rodeia, ou seja, com a cidade na qual habita. Para tanto, partimos da obra Dame tu canto ciudad (2012), da poeta colombiana Marta Quiñónez. Nos debruçamos sobre a elaboração do discurso feminino a partir dos eixos patriarcais de dominação e hierarquia dos espaços sociais previamente demarcados pelas dicotomias masculino/feminino, público/privado, respectivamente. Assumimos, assim, o discurso da poeta em questão como questionador e revelador de uma realidade social desde a experiência subjetiva da mulher em seu ambiente de escrita poética.
Apropiación y reescritura de Cien años de soledad y de la Cándida Eréndira en Ce que je sais de Vera Candida, de Véronique Ovaldé
Authors: Arcos Guerrero Oscar Iván
Published: February 2018

Este artículo analiza la forma en que Ce que je sais de Vera Candida hace suyas las estructuras textuales de Cien años de soledad y de la Cándida Eréndira. Su objetivo es observar cómo la apropiación y la reescritura de estas obras colombianas en una ficción francesa contribuyen a poner de manifiesto problemáticas de género. Se emplearán principalmente planteamientos del estructuralismo francés, de los estudios de género y de la fenomenología. Esto ayudará a observar, desde América Latina, la recepción que han tenido las novelas del escritor colombiano más allá de los límites de nuestra región.
Historia del arrabal. Los bajos fondos bogotanos en los cronistas Ximénez y Osorio Lizarazo, 1924-1946
Authors: Reales Rizo María Del Pilar
Published: February 2018

En el universo del arte pueden existir múltiples puntos de referencia para estimular una producción; muchas veces el elemento sugerente de una obra en el campo escénico, literario, plástico, o cinematográfico, proviene de factores inmersos en la realidad cotidiana, cuyo principio de intencionalidad llega al creador artístico bajo distintas incitaciones...
O papel de Cartago no debate acerca do sacrifício humano fenício-púnico
Authors: Kormikiari Maria Cristina Nicolau
Published: February 2018

A existência ou não do sacrifício humano, especificamente infantil, entre os povos fenício-púnicos é tema de acalorados debates acadêmicos há mais de um século. Recentemente, um conjunto significativo de revisões e novas abordagens físico-químicas da documentação cartaginesa reavivou a questão, que se viu, mais uma vez, no centro de réplicas e tréplicas internacionais. Estaremos diante de um tema que foge à nossa capacidade de análise imparcial? Este artigo pretende abordar os dados mais recentemente organizados em relação ao tema e as interpretações daí advindas. Neste contexto, o Norte da África destaca-se como espaço, até o momento, onde foram encontrados vestígios arqueológicos particularmente instigantes. Além do papel central que Cartago parece ter desempenhado, temos em solo norte-africano o único caso conhecido de “exportação” dessa prática ritual tão complexa. Referimo-nos ao santuário de El-Hofra, em Cirta (moderna Constantina, Argélia), área númida com posição estratégica na rede de trocas da região, visitada e habitada por gregos, latinos, cartagineses, além dos próprios berberes.
Pluralidade em tempo de cristianização: a concepção das identidades cristãs no Norte da África (200-450 d.C.)
Authors: Campos Ludimila Caliman
Published: February 2018

Resenha de: REBILLARD, É. Christians and their many identities in Late Antiquity, North Africa, 200-450 CE. London: Cornell University Press, 2017. 144 p.
Constructing Christian identity in 'Luke-Acts': the purpose of Pharisees in Lukan theology
Authors: Selvatici Monica
Published: February 2018

The purpose of this article is to analyze the references made by the author of the third gospel and the book of Acts (so-called Luke) to members of the Christian communities in the 1st century CE who defended that Christians had to fully observe Torah laws and who especially defended circumcision for Gentile Christians. Luke refers to them as ‘Pharisees’ in Acts 15, 5. Indirect allusions to these Christian Pharisees are ubiquitous in Luke’s work, showing that this issue was very important within his theology. When writing Luke-Acts, Luke was confronted with the sense of orphanhood of the Gentile Christian movement after the Apostle Paul’s death. Careful analysis of his books reveals more clearly the evangelist’s intent to convince his readers that the Gentile Christian movement is heir of the eschatological blessings promised to Judaism.
Fronteiras difusas: o discurso biológico na produção do corpo-oposto
Authors: Morando André , Loguercio Rochele De Quadros , Da Silva Aline Ferraz
Published: February 2018

Nesse artigo, nos interessa conhecer como o saber científico construído pelas ciências biológicas produziram um sexo e um sujeito oposto, ou mais especificamente, como as práticas discursivas fundamentadas no determinismo biológico marcaram estruturas anatômicas como destino da feminilidade e masculinidade de um corpo. Para tal propósito investimos esforços para construir um cenário capaz de mostrar como a busca pela “verdadeira” diferença entre homens e mulheres marcou diferentes estruturas no corpo, em determinados momentos da história. A partir desse levantamento histórico, colocamos sob suspeita a universalidade ou a constante biológica da masculinidade e feminilidade do corpo.Palavras-chave: Sexo; Anatomia; Discurso biológico; Feminino.
Representações de sujeito negro/a na Política Nacional de Saúde Integral da População Negra: uma análise cultural
Authors: Centeno Silvia Regina , Meyer Dagmar Elisabeth Estermann , Andrade Sandra Dos Santos
Published: February 2018

O artigo se desdobra de pesquisa que discutiu representações de sujeito negro/a produzidas na Política Nacional de Saúde Integral da População Negra (PNSIPN), a partir do cruzamento entre gênero e raça/cor. Inscreve-se nos campos dos Estudos de Gênero e Culturais pós-estruturalistas e o material empírico, examinado por meio da análise cultural em combinação com a pesquisa documental, inclui documentos normativos da política e seus desdobramentos. A análise realizada permite argumentar que, ao mesmo tempo em que a política sugere ações importantes para ampliar direitos e acesso à saúde dessa população, as representações por ela produzidas também reforçam e reproduzem posições de vulnerabilidade do sujeito em questão.
Valorar la literatura infantil digital: propuesta práctica para los mediadores
Authors: Correro Cristina , Real Neus
Published: February 2018

La literatura infantil digital supone un nuevo paradigma literario que requiere criterios específicos de valoración. A pesar de los avances académicos, no se ha desarrollado ni implementado aún una herramienta práctica de evaluación y selección de esta literatura en el ámbito social. Con el objetivo de llenar este vacío, el presente artículo parte de los estudios más recientes para diseñar una ficha de sencilla pero efectiva destinada a los mediadores. La explicación de cada uno sus componentes (organizados en dimensiones, parámetros e indicadores de valoración) se complementa con ejemplos que permitan su comprensión en profundidad para garantizar el uso adecuado del instrumento.
Greek student’s politicization: empirical research in schools of central Macedonia in Greece
Authors: Papaoikonomou Anthony D.
Published: February 2018

This

paper presents a research that was carried out in schools of central Macedonia

in Greece about the degree of students’ politicization. The concept of

politicization was delineated using five different variables that describe

students’ way of thinking about different aspects of their reality. The

findings show that peer group was considered to be the most important

socializing factor which has a determining role in the political socialization

of students. The degree of politicization is equivalent with the attendance in

bars and the frequent watching of political programs on television.   
Dinamika haji Indonesia sejak era kolonial dan problematika calon haji ilegal
Authors: Rosyid Moh.
Published: February 2018

The number of Indonesian pilgrims every year is increasing. On the other hand, the allocation of the number of pilgrims to be dispatched is limited by the quota. This triggers the waiting list and the share of various hajj efforts despite the violation of the law. However, not pilgrims know that pilgrimage using other country’s passport is a violation of Law No. 12 of 2006 on Citizenship and possible losing of one's nationality. From historical perspective, Muslims’ pilgrim dated back from the 16th century. At that time, there was strong suspicion that upon returning from pilgrimage, Muslims tend to be “rebellious” and initiated movement against the Dutch colonial government. Thus, the Dutch made a strict regulation concerning the Hajj and scrutinized Muslims before pilgrimage, while staying in Mecca and after their return. Among the movement against the Dutch led by Muslim upon returning the Hajj was the Padri movement. Nowadays, the number of Muslims who intend to go Hajj is rising significantly, and the waiting list goes for 15 to 20 years. The long list caused some people to find a way to go for Hajj including manipulation of citizenship documents, such as using passport of other countries. In respond to this situation, the government tries to negotiate with the Saudi government to increase the Hajj quota for Indonesians. Another effort is borrowing the remaining quota of neighboring countries. There is also suggestion to close the Hajj registration for some time and the need to revise the Hajj Law.
The impact of cigarette dependence severity on disease outcomes and depression in ankylosing spondylitis
Authors: DÜLGER Seyhan , AYKURT KARLIBEL İlknur , YILDIZ Tekin , ALTAN Lale , ŞENGÖREN DİKİŞ Özlem , KASAPOĞLU AKSOY Meliha
Published: February 2018

Introduction: Ankylosing spondylitis (AS) is a chronic systemic
inflammatory disease. Smoking plays a role in AS pathogenesis and causes
difficulties in its treatment. The aim of this study is to investigate the
association of disease activity, functional status, spinal mobility,
depression, chest expansion, pain, fatigue, quality of life, respiratory
function with cigarette dependence severity in patients with AS. Methods:
The study included 71 patients diagnosed as AS. Patients were evaluated on
questionnaires and examination scales specific to assessment of AS. The results
were compared using the SPSS-23 software. Results: Out of the total 71
patients, 40 (56.3%) were smokers, 31 (43.7%) were non-smokers. There were no significant
differences between the smokers and the non-smokers with respect to the median
values in Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing
Spondylitis Metrology Index (BASMI), Bath Ankylosing Spondylitis Functional
Index, Ankylosing Spondylitis Quality of Life questionnaire, Short Form 36
(SF-36), chest expansion, the fingertip-to-floor test and Beck Depression
Inventory (p > 0.05). However, there were significant differences when
comparing the median scores on BASMI (p
= 0.036), SF-36 physical role strength (p
= 0.004) and the chest expansion (p =
0.015) of the smoker patients placed in the three Fagerström Test for Nicotine
Dependence (FTND) subgrouping. Conclusion: AS patients with
smoking have elevated FTND scores and worse values for test of disease activity
and quality of life.
SABERES DOCENTE SOBRE MEIO AMBIENTE EM UMA COMUNIDADE RIBEIRINHA DA AMAZÔNIA AMAPAENSE.
Authors: Silva Gomes Raimunda Kelly , Nakayama Luiza
Published: February 2018

O objetivo deste estudo foi compreender a percepção dos professores da Escola Estadual Francisco Filho, na Amazônia amapaense, sobre a educação ambiental numa vertente holística. Utilizamos a técnica de entrevistas semiestruturadas e de grupo focal, verificando que a maioria dos docentes é jovem, solteiro e tem ensino superior completo e, destes, 10% têm pós-graduação lato sensu, e, por esta razão, a maioria dos informantes atua no Ensino Fundamental II e/ou Ensino Médio. Embora a maioria apresente uma percepção romântica/naturalista de meio ambiente, contudo, demonstra conhecer os principais problemas ambientais locais, significando que, apesar de os professores terem uma visão fragmentada de meio ambiente, estão atentos ao cotidiano do alunado.
ABORDAGEM SOCIOAMBIENTAL NA EDUCAÇÃO PROFISSIONALIZANTE: UMA EXPERIÊNCIA VIA INVESTIGAÇÃO TEMÁTICA
Authors: Freitas Renata Gomes de Abreu , Meirelles Rosane Moreira Silva
Published: February 2018

O presente estudo compreende parte da tese de doutorado da primeira autora, que tem como objetivo geral delinear caminhos metodológicos para a implementação da dimensão ambiental no ensino profissionalizante do Instituto Federal de Educação, Ciência e Tecnologia do Acre (IFAC) na perspectiva da Educação Ambiental Crítico-Transformadora. Nesses termos, o presente ensaio pretende apresentar o percurso investigativo na elaboração de um Programa de Conteúdos Críticos, via Abordagem Temática Freiriana, para fins de inserção da dimensão ambiental ao currículo do Ensino Médio Técnico. As etapas investigativas indicaram a ocorrência de situações-problemas presentes no contexto dos educandos e seus familiares, os quais, mediante atividades de problematização foram validadas como Temas Geradores. Estes, por sua vez, conduziram à estruturação de uma Rede Temática (Temas Geradores e Contratemas) a qual guiou a organização de um Programa de Conteúdos (Redução Temática), que, partindo do sistema socioeconômico vigente e do modelo de colonização/ocupação da Amazônia Sul-Ocidental, desvela as origens da desigualdade social, conflitos urbanos e a degradação ambiental. O conjunto dos conteúdos apresentados neste artigo articula-se entre si, mediado por uma proposta problematizadora que fomenta a reflexão e compreensão dos problemas socioambientais constituídos, historicamente, via expansão da fronteira desenvolvimentista na região.
Skin Cancer Risk-Lowering Behaviors and Skincare Habits of Youth Ages 18-25 Years
Authors: Rainous Elizabeth , Herrmann Eli J. , Abraham Samuel P.
Published: February 2018

Young adults are known for feeling invincible and thus engaging in risky behaviors. One such risky behavior is not protecting themselves from the sun, which can cause skin cancer. The purpose of this study was to determine the skin cancer risk-lowering behaviors and skincare habits among youth ages 18 to 25 years. The findings indicated that a high level of knowledge does not equal regular use of risk-lowering behaviors. This study was quantitative, cross-sectional, and non-experimental. The survey, consisting of 20 Likert-type scale statements, was given in a college consisting of about 2000 students of which 120 college undergraduates participated. Orem’s self-care theory was used as a guide for the study. Participants tended to agree that the use of sunscreen would help protect them from getting skin cancer (M=2.88, SD=0.57), and that sunlight causes skin cancer (M=2.80, SD=0.70). Despite having an adequate level of knowledge on skin cancer risk factors, individuals did not follow through with correct risk-lowering behaviors. For risk-lowering behaviors, more than half of the participants regularly used sunscreen when exposed to the sun (M=2.50, SD=0.90), and most never used tanning beds (M=1.20, SD=0.60).
Hyperbolic Tangent Ansatz Method to Space Time Fractional Modified KdV, Modified EW and Benney–Luke Equations
Authors: Ersoy Hepson Ozlem
Published: February 2018

The space time fractional Korteweg-de Vries equation, modified Equal Width equation and Benney-Luke Equations are solved by using simple hyperbolic tangent Ansatz method. A simple compatible wave transformation in one dimension is employed to reduce the governing equations to integer ordered ODEs. Then, the ansatz approximation is used to derive exact solutions. Some illustrative examples are presented for some particular choices of parameters and derivative orders.
Acupuncture as Add-On Treatment of the Positive, Negative, and Cognitive Symptoms of Patients with Schizophrenia: A Systematic Review
Authors: Van den Noort Maurits , Yeo Sujung , Lim Sabina , Lee Sook-Hyun , Staudte Heike , Bosch Peggy
Published: February 2018

Background: Schizophrenia is a severe psychiatric disorder that has a large impact on patients’ lives. In addition to Western medicine, the use of additional treatments, such as acupuncture, in treating the positive, negative, and cognitive symptoms is increasing. Methods: We conducted a systematic review on the use of acupuncture as an add-on treatment for patients with schizophrenia that are in regular care, with a special focus on the treatment of the often accompanying co-morbid sleep disorders. In this study, we searched the Medline, ScienceDirect, Cochrane Library, Scopus, and ERIC databases with a cut-off date of December 31, 2017, thereby following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) protocol. Results: Our search resulted in 26 eligible studies. Most studies showed limited evidence for the use of acupuncture as add-on therapy in the treatment of clinical symptoms, but beneficial effects have been reported in the treatment of co-morbid sleep disorders. Conclusions: Limited evidence was found for the use of acupuncture as add-on therapy in the treatment of patients with schizophrenia; however, positive results were found in the treatment of sleep disorders, but this result needs to be confirmed in large, randomized, controlled trials.
Discrete Inverse Sumudu Transform Application to Whittaker Equation and Zettl Equation
Authors: Silambarasan Rathinavel , Nisar Kottakkaran Sooppy , Belgacem Fethi Bin Muhammad
Published: February 2018

Inverse Sumudu transform multiple shifting properties are used to design methodology for solving ordinary differential equations. Then algorithm applied to solve Whittaker and Zettl equations to get their new exact solutions and profiles which shown through Maple complex graphicals. Table of inverse Sumudu transforms for elementary functions given for supporting the differential equations solving using inverse Sumudu transform.
Uji Aktivitas Antioksidan N-Metil Kitosan Berkelarutan Tinggi
Authors: Kurniasih Mardiyah , Purwati Purwati , Dewi Ratna Stia , Fatimah Susi
Published: February 2018

Telah dilakukan uji aktivitas antioksidan dari N-metil kitosan yang memiliki kelarutan tinggi. Uji aktivitas antioksidan dilakukan dengan menggunakan metode DPPH (1,1-diphenyl-2-pikrilhidrazil) dan metode FTC (ferric thiocyanate). Optimasi sintesis dilakukan untuk memperoleh N-metil kitosan dengan kelarutan tinggi. Hasil penelitian menunjukkan bahwa N-metil kitosan yang berkelarutan paling tinggi adalah N-metil kitosan yang disintesis dengan 1,7 mL formaldehid 10%. Berdasarkan hasil uji aktivitas antioksidan menggunakan metode DPPH dapat diketahui bahwa N-metil kitosan merupakan antioksidan sedang dengan nilai IC50 sebesar 145,398 ppm. Hasil pengujian antioksidan metode FTC menunjukkan bahwa N-metil kitosan memiliki kemampuan menghambat terbentuknya senyawa radikal bebas yang disebabkan oleh oksidasi asam lemak.

An Antioxidant Activity Test of High Solubility N-Methyl Chitosan. An antioxidant activity test of high solubility N-methyl chitosan has been performed. The antioxidant activity test was performed using DPPH (1,1-diphenyl-2-pikrilhidrazil) and FTC method (ferric thiocyanate). The synthesis optimization was performed to obtain high N-methyl chitosan solubility. The results showed that N-methyl chitosan with the highest solubility in 1% acetic acid solvent was N-methyl chitosan which was synthesized with 1.7 mL formaldehyde 10%. Based on the results of antioxant activity test using DPPH method can be seen that N-methyl chitosan is a medium antioxidant with IC50 value of 145.398 ppm. The result of antioxidant test of FTC method showed that N-methyl chitosan has antioxidant activity with tendency to increase along with the increase of N-methyl chitosan concentration.
Determination of Vitamin C in Various Colours of Bell Pepper (Capsicum annuum L.) by Titration Method
Authors: Nerdy Nerdy
Published: February 2018

Vitamin C is needed by human body to improve the immune system and can be obtained from the bell pepper. Bell pepper has a different color according to the level of maturity, ranging from green, yellow, orange, and red. Differences in color also make possible differences in vitamin C content. The purpose of this study was to determine vitamin C levels in various colors of bell fruit. Measurement of vitamin C was done by titration method with metaphosphoric acid as the solvent and 2,6 dichloroindophenol as the standardized solution. The samples used were green bell pepper, yellow bell pepper, orange bell pepper, and red bell pepper taken from Gundaling, Berastagi, Karo, Sumatera Utara, 22152, Indonesia. The results show that vitamin C level in various colors of bell pepper respectively, for green bell pepper 16.52 mg vitamin C per 100 g green bell pepper; yellow bell pepper 159.61 vitamin C per 100 g yellow bell pepper; orange bell pepper 121.38 vitamin C per 100g orange bell pepper; red bell pepper 81.19 vitamin C per 100 g red bell pepper. These results indicate that different levels of bell pepper maturity have different vitamin C content.
VARIASI POLA VOKALISASI PADA TAKSONOMI ANAK JENIS ELANG-ULAR (Spilornis cheela) DI PKEK, GARUT, JAWA BARAT
Authors: Dermi Devi Fauzia , Sedayu Agung , Komala Ratna
Published: February 2018

Crested serpent eagle (Spilornis cheela) is a bird of prey with distinctive of uniue vocal. Based on several studies mentioned that there are differences in vocalization at the level of subspecies and is often used to study the role vocalization defining the subspecies in taxonomy. This research aimed to determine the role variation of vocalization pattern in taxonomy on subspecies eagle. The research was conducted from May to September 2017 at Kamojang Eagle Conservation Center. The method used is descriptive method with continuous sampling technique. The samples was an adult eagle from three subspecies serpent eagle. The location of observation determined by purposive sampling with the provisions listening post is less than 5 meters until 30 meters. The data is collected at 7 am to 5 pm. Data were analyzed using sound analysis software. The data taken are fundamental frequency, maximum frequency (MinF), minimum frequency (MinF) and duration. Differences between subspecies were analyzed using Kruskal Wallis and Mann-Whitney U statistical test with SPSS 17.0. The result of the research is The vocalizations can be utilized in the subspecies eagle taxonomy of the species to complement the morphological data, marked by significantly different results on each parameter of vocalization between (Spilornis cheela malayensis) and (Spilornis cheela natunensis). MaxF significantly different in (Spilornis cheela malayensis) and (Spilornis cheela bido), (Spilornis cheela natunensis) and (Spilornis cheela bido).
Developing a Web-Based Learning (E-Learning) in General Biology Subjects with Joomla Program
Authors: Seribulan Muhamad Nurdin Matondang , Rahayu Sri , Isfaeni Hanum
Published: February 2018

Web-based learning has been widely used as learning resources. Developing these learning resources is believed to provide beneficial for students. Therefore, this research was aimed to develop a web-based learning source for General Biology Course. It was developed by Joomla software version 1.5.6. This program was run and supported by Xampp version 1.6.1. in which Apache 2.2.4.. MySQL 5.0.37., and PHP version 5.2.1. were also included to offline program running support. The research was conducted on September – November 2012 in General Biology Course, Biology Department, Faculty of Mathematics and Science, State University of Jakarta. Material contents developed in this web were limited to animal structure. Samples were consisted of students, media expert, and learning material expert. Data were obtained through questionnaires. According to students, the material classified as very good (82.5%), whether 5 five other components including content (79.48%), visual design (70.33%), structure and navigation (76.94%), and interaction (78.67%) were categorized as good. Based on media expert assessment, the web content was classified as very good (81.25%), while the other components including web material (75%), visual design (70%), structure and navigation (70.83%), and also interaction (80%) were categorized as good. Lastly, this product was assessed by the learning material expert who categorized good for the following components: web material (75%), content (78.13), visual design (75%), structure and navigation (79.19%). The only component which got fair score was interaction (50%). Although most of the components were classified as good, some aspects of this web must be repaired.
Shallow Horizontal Well Cyclic Steam Stimulation in Clastic Unconsolidated Unconventional Reservoir in Kuwait - A Case Study
Authors: Al-Ballam Shaikha , Pandey Dharmesh Chandra
Published: February 2018

This paper presents the preliminary results of a Cyclic Steam Stimulation (CSS) trial in a horizontal well for the first time in the State of Kuwait.

The horizontal well was completed in a viscous crude oil bearing shallow unconsolidated sandstone reservoir of Middle Miocene age located in north of the State of Kuwait, in an area where currently several pilot projects are undergoing execution using mobile production facilities and permanent production facilities.

The drilling of the horizontal well was a challenge in terms of reservoir shallowness utilizing conventional drilling rig for vertical wells. The well was completed with 5" slotted liner sizes in an open hole section to prevent sand production and maintain hole stability. The artificial lift method deployed was high temperature tolerance All Metal Progressive Cavity Pumps (AMPCP). The well was equipped with unified Rod BOP which allow CSS operation without any intervention. The unified rod BOP reduces the nonproductive time (NPT) and oil deferment during the CSS process. Therefore, no need to change the X-Mass tree as the setup is applicable for injection and production phases.

The horizontal well started production for a short period of cold production phase followed by a Cyclic Steam Stimulation Cycle (CSS) for well productivity evaluation. The well's cold production, injection performance, production performance post CSS, and the AMPCP artificial lift performance shall be presented in this paper. Monitoring and surveillance detailed plans including nearby drilled observation wells were utilized in CSS performance assessment. The overall wells performance is showing encouraging and promising results for further optimization and field development.
Electrical Heating — Doing the Same Thing Over and Over Again …
Authors: Ali S. M. , Bayestehparvin B.
Published: February 2018

… And expecting different results. Electrical heating of oil reservoirs has fascinated petroleum engineers for more than 70 years - longer, if you include the use of heaters in Siberian oilfields. The earliest laboratory study was done in Pennsylvania in 1940's. Since then, many more studies and field tests have been carried out, none of which was a commercial success. This paper takes a look at different forms of electrical heating, the supporting theoretical work, and field tests. Additionally, several examples are given illustrating the limitations of electrical heating processes. Also discussed is the logic behind the resurgence of electrical heating in recent years. Not discussed are over 200 patents on electrical heating. The major electrical heating processes are resistance heating, using direct current or low frequency alternating current, induction heating, microwave heating, and heating by means of electrical heaters. These are described briefly, and compared. In applications to oil sands, the intent is to utilize the connate water as the heating element (resistance heating) or oil sands as the dielectric (microwave heating). Induction heating is much less effective but has been tested in many field projects. Shale that has a permeability of zero to fluid flow, is electrically conductive, and thus channels much of the electric current flow in resistance heating, which also has other limitations. Microwaves suffer from low depth of penetration (of the order of 20 cm in oil sands) and low power delivery (of the order of 1 MW as a maximum). The power requirements for a typical SAGD pair, in contrast, are 15-30 MW. Electric heaters have been used in oilfields for many years for near-wellbore heating. Two large field pilots used powerful electric heaters, and were recently shut down. Although electrical heating has not had commercial success, recently there has been a resurgence in various electrical processes, as a means of reducing GHG emissions, under the flawed logic that oilfield use of electricity would displace emissions caused by steam generation.
Integrated Static and Dynamic Big-Loop Modeling Workflow for Assisted History Matching of SAGD Process with Presence of Shale Barriers
Authors: Nguyen Ngoc T. , Dang Cuong T. , Yang Chaodong , Nghiem Long X. , Chen Zhangxin
Published: February 2018

Steam Assisted Gravity Drainage (SAGD) has been widely applied to unlock hydrocarbon resources in oil sands reservoirs. This method uses steam, which is generated at the surface, to heat a formation and create a steam chamber around an injector. Past studies have indicated that reservoir heterogeneity is one of the crucial factors that directly affectthe performance of the SAGD process. This paper presents an innovative integrated modeling approach for evaluating, assisted history matching, and production forecasting of the SAGD process with the presence of a complex shale barrier system in oil sands reservoirs.

As SAGD is a strongly geological dependent recovery process and, unfortunately, there are many uncertainties associated with reservoir geology in reality. Therefore, it requires generating a large number of geological realizations to capture the critical effects of geology, especially with the presence of shale barriers, in history matching and field development planning of the SAGD process. To quantify the impact and improve the quality of history matching compared with the traditional method, an efficient integrated workflow has been developed in which geological information generated from a geological modeling package is automatically updated for a reservoir simulator and controlled by an intelligent optimizer in a big-loop modeling approach.

A detailed workflow on the integrated modeling approach that includes shale barriers for a typical oil sands reservoir is described in the first section of this paper. Shale bodies are geostatistically distributed in the geological models. A comprehensive parametric study was conducted with numerous geological realizations to identify the critical role of shale barriers in SAGD performance including shale geometry, shale length and thickness, shale distribution and proportions. Then the Bayesian algorithm with a Proxy-based Acceptance-Rejection sampling method is employed for assisted history matching of SAGD production profiles. With the presence of complex shale barriers, it requires simultaneous updating of both geological and reservoir engineering parameters. Using the proposed approach, the global history matching errors were drastically reduced in all production wells. Validation results indicate that the integrated modeling approach effectively helps to update the properties and distribution of shale barriers to find the closest geological distribution compared to the true solution. Finally, an ensemble of the best-matched simulation models is used to perform a probabilistic forecasting to capture the uncertainties in future production profiles.

Not limited to history matching ofthe SAGD process, the proposed approach can be also applied to different complex problems such as robust optimization for various recovery methods from conventional to unconventional reservoirs.
Waterflood Performance Analyses for the Bhagyam Viscous Oil Reservoir
Authors: Shankar Vivek , Beliveau Dennis , Jain Shakti , Jha Bhawesh Chandra , Tiwari Arjun , Kumar Chandan , Rautela Chandramohan , Stanley Matthew , Chapman Thomas
Published: February 2018

Bhagyam is a large oil field in the Barmer Basin of Rajasthan, India. The major producing intervals are shallow Paleocene-aged Fatehgarh sandstones. The paraffinic oil is viscous (20-500 cP) with wax appearance temperature (WAT) only 2-3°C lower than the average reservoir temperature of ~53°C.

Bhagyam has been developed with 153 wells in an edge linedrive waterflood and has been producing since 2012. However, performance has been less than projected in the initial field development plan (FDP): not as good as the nearby Mangala and Aishwariya Fatehgarh waterfloods and at the lower-end of that seen in worldwide viscous oil waterflood analogues. Key contributors to Bhagyam's performance were lower than expected initial well productivity and a more rapid rise in water cut than projected.

The lower initial well productivities were surprising when compared with experience from Mangala, where initial well productivity was closely aligned with expectations. Simulation models could not replicate Bhagyam performance without numerous major local modifications; hence long-term model predictions were not sufficiently reliable for business planning. Reservoir behaviour was initially attributed to severe heterogeneity and early models used high permeability streaks to match performance. However, saturation logs and selective zonal flow back of a few wells showed that injected water was not confined to select high permeability streaks but was widespread both areally and vertically. The more diffuse nature of water movement suggested a fundamental disconnect between field dynamics and the simulation model description and physics.