bluuebunny/crossref_metadata_2025 huggingface dataset:
What is the Effect of Promoter Loading on Alkalized Bimetallic Co-Mo Catalyst for Higher Alcohols Synthesis from Syngas?
Authors: Moqadam R. G. , Tavasoli A. , Salimi M.
Published: March 2019

Manganese and nickel co-modified K/Co/MoS2 catalysts supported on graphene were prepared by incipient wetness impregnation method for application in higher alcohol synthesis (HAS). All catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorptiondesorption, temperature-programmed reduction (TPR) and transmission electron microscopy (TEM). The effect of promoters, as well as supports on higher alcohol synthesis production from syngas, was investigated in a fixed bed reactor. The process was performed with an molar ratio H2 : CO = 1 : 1, operating pressure and temperature of 4 MPa and 330 °C, respectively, and gas hourly space velocity (GHSV) 3.84 m3 (STP)/(kgcat.·h) as reaction conditions (STP – standard temperature and pressure). Results originated from practical works showed that the addition of Ni to the graphene-based catalyst increased HAS production and decreased methanol formation. The total alcohols space-time yield (STY) and alcohol selectivity on Ni/Mn/Co/Mo/K/graphene catalyst reached a maximum at 0.41 galc./(gcat.·h) and 63.51 %, respectively, which is higher than the same composition over alumina supported catalyst.
Factors That Account For Low Enrollment In Community-Based Senior High Schools In The Ashanti Region Of Ghana
Authors: Raphael Denteh , Dontoh Samuel , Adjei Augustine , Kyei Badu Francis
Published: March 2019

The study was to explore the factors that account for low enrolments in senior high schools in the Ashanti Region of Ghana. The purpose of the study was to investigate the factors that account for low enrolments in the community-based senior high school in the Ashanti Region of Ghana. The purpose of the study was to investigate socio-economic factors, school related factors, geographical factors and individual characteristics that influence enrolments, participation, retention, attendance, progression and dropout in community-based senior high schools in Ashanti Region of Ghana. The purposive and quota sampling were used to select a sample size of 120 respondent make up of 10 heads, 10 Districts Directors of Education, 10 PTA chairmen and 90 parents of sampled schools. The instruments used to collect data from the respondents were the questionnaire for heads, structured interview guide for parents. PTA Chairmen and the District Directors of GES and observation guide on school building and furniture. The reliability co-efficient of the study was 0.82. The co-efficient is high enough and hence the items were deemed reliable for the study. Data were analysed by the use of frequencies, percentages and apparent cohort method. The finding of the study indicated that most of the sampled senior high schools do not have school bus to convey day students to and from schools. The sample senior high schools do not have workshops for all programmes, classrooms and standard science laboratories and science equipment to enhance academic work.
Rusya’nın Türkiye’ye Yönelik Turizm Talebi: ARDL Sınır Testi Yaklaşımı (2002-2016)
Authors: Bayır Musa
Published: March 2019

Rusya Türkiye’ye yönelik turizm talebinde en
önemli ülkelerden biridir. Bu nedenle, çalışmanın temel amacı Rusya’nın
Türkiye’ye yönelik turizm talebi üzerinde etkili olan faktörlerin ampirik
olarak araştırılmasıdır. Turizm talebini açıklamak amacıyla, Rusya’ya ait
gelir, Türkiye’de turizm fiyatları, alternatif turizm bölgesi (Yunanistan)
turizm fiyatları ve uçak krizi dummy değişkeninin olduğu bir takım
makroekonomik değişken kullanılmaktadır. Analiz 2002-2016 dönemini kapsamakta
ve çeyrek dönemlik veriler kullanılmaktadır.  Çalışmada sınır testi ve ARDL yaklaşımı
kullanılmaktadır. Analiz sonuçlarına göre, gelir ve alternatif turizm bölgesi
fiyat değişimleri kısa ve uzun dönemde pozitif etkiye sahiptir. Turizm fiyatları
ise yalnızca kısa dönemde negatif etkiler ortaya çıkarmaktadır. Uçak krizi ise
kısa dönemde önemli düzeyde negatif bir etkide bulunmaktadır.
Yeşil Sukuk ve Türkiye’de Uygulanabilirliği
Authors: Ela Mehmet
Published: March 2019

Yeşil sukuk henüz niş bir enstrüman olarak son
yıllarda dikkatleri üzerine çekmiştir. Özellikle son birkaç yılda yeşil sukuk
ihraçları artmaya başlamıştır. Yeşil sukukun ihraç edilmesinin temelinde
sunduğu birçok avantaj yatmaktadır. Yeşil sukukun avantajlarını fark eden
birçok ülke yeşil sukuka yönelik yasal ve vergisel düzenlemelere gitmiştir.
Türkiye’de yeşil sukuk ihracı ile fonlanabilecek birçok yeşil proje bulunmasına
rağmen yeşil sukuka ilişkin yasal ve vergisel düzenlemeler henüz gündemde
değildir. Bu durum Türkiye’de önemli bir problem teşkil etmektedir. Bu noktadan
hareketle ele alınan çalışmanın amacı yeşil sukukun Türkiye’deki potansiyeline
araştırmak ve atılması gereken adımlara yer vermektir. Bu amaca ulaşmak için
çalışmada betimleyici bir dil kullanılarak dünyada yeşil sukuk piyasasına
ilişkin genel bilgilere yer verilmiştir
Investigating The Relationship on CO2, Tourism, Economic Growth and Trade Openness in Turkey
Authors: Gövdeli Tuncer
Published: March 2019

The purpose of this study is to examine the impact of economic growth, trade openness and tourist arrivals on CO2 emissions by considering the period 1970 through to 2014. For this purpose, firstly, by analyzing the stability of the variables, it was determined that the variables were stationary at level I (1). After the variables were determined to be stationary at I (1), the ARDL boundary test analysis was performed. The cointegration relation was determined according to the ARDL boundary test analysis. In addition, the long-term coefficients of the variables are positive and significant. According to the VECM Granger causality analysis, there was found to be a causality in Turkey between economic growth and CO2 emissions, between trade openness and CO2 emissions, between tourist arrivals and CO2 emissions and between trade openness and economic growth. According to the long-term causality results, there is a relationship of causality between economic growth, trade openness and tourist arrivals and CO2 emissions.
Beşeri Kalkınma, Sosyal Dışlanma ve Yoksulluk İlişkisi Üzerine Bir Değerlendirme
Authors: Erdal Adnan , Özkan Dilek
Published: March 2019

Ekonomi
literatüründe büyüme ve kalkınma kavramları birbiriyle karıştırılan kavramlar
arasında yer almaktadır. Aynı anlama geldiği düşünülse de ekonomik kalkınma
reel gelir artışına eşlik eden yapısal değişim ve dönüşümü ifade etmektedir.
Ekonomik kalkınmanın en temel amaçlarından olan beşeri kalkınma ise bireylerin
yaşam standartlarının yükseltilmesini ve yaşam kalitelerinin her açıdan
iyileştirilmesini ifade etmektedir. Beşeri kalkınmaya önem veriyor olmak beşeri
sermayenin öneminin farkına varıldığını da göstermektedir. Bu bağlamda beşeri
kalkınmanın gerçekleştirilmesi hususunda yaşanacak olumsuzluklar bireylerin
sahip oldukları yapabilirlik kapasitelerini kullanmaktan yoksun bırakılmalarına
ve yoksulluğun artışına yol açabilecektir.

Amartya
Sen, son yıllarda ekonomi literatürüne kalkınma konusuna ilişkin farklı bir
bakış açısıyla yeni fikirler getirmiştir. Sen’e göre kalkınmaya ulaşabilmek ve
sürdürülebilirliğini sağlayabilmek konusunda özgürlüklerin genişletilmesi bir
amaç olmaktadır.

 Bu çalışmada ekonomik kalkınma, beşeri
kalkınma ve beşeri sermaye arasındaki ilişki ile sosyal dışlanma, yoksunluk ve
yoksulluk bağlamında kuramsal bir yaklaşımla ele alınmaya çalışılmıştır.
Ultrasonography and fine-needle aspiration biopsy in the diagnosis of a cystic type of thyroid papillary cancer
Authors: Britvin T. A. , Bondarenko E. V. , Bondarenko V. O. , Demidova T. Yu.
Published: March 2019

Background: Cystic type of thyroid papillary carcinoma is a  rare independent disease of this organ. Its prevalence among papillary carcinomas is from 2.5 to 6%.

Aim: To identify ultrasonographic features of the cystic form of papillary carcinoma for the differential diagnosis of solitary liquid neoplasms of the thyroid and to elaborate an optimal technique for its fine-needle aspiration biopsy.

Materials and methods: We retrospectively analyzed the data on the diagnosis and treatment of 29  patients with the cystic type of thyroid papillary carcinoma (26  women, 3  men, mean age 52  years). The instrumental diagnosis was based on a  comprehensive ultrasonography and fine-needle aspiration biopsy.

Results: We identified the following ultrasonographic characteristics of “potentially malignant” cystic nodules of the thyroid: the wall thickness of  2 to  3  mm with marginal tissue components of various size (from 10 mm to 3 cm in diameter) and microcalcinates; presence of focal blood supply by color Doppler mapping; homogeneity and low echogenicity of the liquid component. Conclusion: The right interpretation of the ultrasonographic results and adequately performed fine-needle aspiration biopsy help to verify the diagnosis of thyroid carcinoma and to avoid mistake in the treatment of this patient category.
Localizando señales sismo- volcánicas del volcán Turrialba (Costa Rica) usando Python y Computación Avanzada: Un caso de colaboración multidisciplinar para el desarrollo cientí co
Authors: Cornejo-Suárez Guillermo , Van-der-Laat Leonardo , Meneses Esteban , Mora Mauricio M. , Pacheco Javier Fco
Published: March 2019

Las señales sismo-volcánicas de baja frecuencia son generadas por el movimiento interno de magma, gases, agua, entre otros. Suelen preceder o acompañar la actividad eruptiva. Por lo tanto, estudiarlos resulta fundamental para el monitoreo de la actividad volcánica y una apropiada estimación de la amenaza. Sin embargo, la complejidad del mecanismo de la fuente hace que los procedimientos clásicos de localización de sismos generados por procesos tectónicos, que son los más comunes, no puedan ser utilizados para los volcánicos. A esto se suma la heterogeneidad de los edificios volcánicos que modifican en gran medida las formas de onda de las señales sismo-volcánicas, lo que también dificulta su procesamiento. Es por ello que se requiere aplicar otro tipo de métodos de tratamiento de señal los cuales, por su complejidad computacional, requieren de plataformas de computación avanzada (supercomputadoras), sobretodo cuando se precisa de resultados en tiempo real. No obstante, los observatorios o entes encargados de la auscultación y monitoreo volcánico en la región centroamericana tienen recursos limitados y no pueden mantener un departamento completo de desarrollo de software especializado. La presente ponencia analiza un caso de estudio, en el cual se desarrolló un trabajo colaborativo entre especialistas en sismología volcánica y en computación avanzada, quienes implementaron una plataforma computacional para la localización de señales sismo- volcánicas en el Volcán Turrialba, Costa Rica. Nuestra principal conclusión es que la creación de redes de colaboración multidisciplinaria es una opción que permite maximizar recursos para abordar y superar muchas de las limitaciones que existen para el desarrollo de la investigación en nuestro contexto (falta de recursos humano, tecnología, presupuesto, entre otros).
La comunicación de crisis en el sector atómico: protocolo, características, y recomendaciones en eventos nucleares = Crisis communication in the atomic sector: protocol, characteristics, and recommendations in nuclear events
Authors: Cobos Urbina Enrique , Recoder Sellarés María José
Published: March 2019

Resumen: Las centrales nucleares necesitan una comunicación organizada para los dos tipos de situaciones es­peciales a las que se enfrentan: por un lado, para informar a los stakeholders de lo que está ocurriendo en una crisis operativa; y por otra parte para recuperar la confianza pública en aquellos acontecimientos imprevistos que afectan a la reputación de la central y a la legitimidad social de la energía nuclear. ¿Qué características definen la comunicación de crisis nuclear? ¿Qué protocolo comunicativo se sigue en España en caso de un accidente o incidente nuclear? ¿Se tienen en cuenta las teorías de comunicación estratégica en períodos de crisis?Palabras clave: centrales nucleares; energía nuclear; comunicación de crisis; comunicación nuclear; España.Abstract: Nuclear power plants need an organized communication for the two types of special situations they face: on the one hand to inform relevant stakeholders of what is happening in an operational crisis; and on the other hand to recover public confidence in those unforeseen events that affect the reputation of the nuclear power plant and the social legitimacy of nuclear energy. What characteristics define nuclear crisis communication? What communicative protocol is followed in Spain in case of a nuclear accident or incident? Are the theories of strategic communication taken into account during periods of crisis?Keywords: nuclear power plants; nuclear energy; crisis communication; nuclear communication; Spain.
La Administración y la cobertura informativa en situaciones extraordinarias relacionadas con la salud. La crisis del virus del Ébola = The Administration and the information provided in extraordinary situations related to health. The Ebola virus crisis
Authors: Ibáñez Peiró Ángel
Published: March 2019

Resumen: En España, el Sistema Nacional de Salud goza de altas cotas de excelencia. Pero esta buena reputación, en ocasiones, se ve empañada como resultado de la inadecuada gestión de la función pública de informar por parte de sus componentes y de la Administración. El presente trabajo se basa en una investigación realizada por este mismo autor sobre la gestión de la Información Pública, por parte del Estado, ante situaciones extraordinarias relacionadas con la salud, estudiando como caso práctico la crisis del virus del Ébola surgida España en 2014. El punto de vista desde que se acomete el estudio se basa en la objetividad de los datos empíricos que se manejan, lo que se dispone en el ordenamiento jurídico en materia de comunicación, y la utilización de parámetros de carácter técnico en la valoración de las noticias difundidas. En este contexto se analiza la actuación y responsabilidad de los profesionales de los medios de comunicación, las fuentes de información, así como ciertos aspectos éticos, deontológicos y legales que se deben tener en cuenta por parte de todos los implicados en dar respuesta comunicacional a este tipo de situaciones, en especial: los profesionales de la salud pública y las Autoridades políticas.Palabras clave: Información Pública; catástrofes y emergencias sanitarias; epidemias y comunicación; Ébola.Abstract: In Spain, the National Health System has a high level of excellence. But this good reputation may so­metimes be marred as a result of an inadequate managing of the public function of informing by both, its components and the Administration. This essay is based on a research of this author about managing Public Information by the State to face extraordinary situations related to health, analyzing the crisis caused by the Evola virus in Spain in 2014. The point of view on which this study is made is based on the objectivity of the empiric data, the regulations about communication and the use of technical para­meters in the valoration of media reports. In this context these parameters are analyzed: the acting and responsibility of media professionals, the information sources, and some ethycal, deontological and legal aspects that must be taken into account by those concerned with giving an answer to these kind of situations, specially the professionals of public health and political authorities.Keywords: Public Information; Catastrophes and health emergencies; epidemics and communication; Ebola.
Os instrumentos básicos de laboratório
Authors: Andrade João Carlos de
Published: March 2019

O emprego correto dos equipamentos em um laboratório analítico está diretamente relacionado com a qualidade e a confiabilidade dos resultados obtidos. A seleção de um procedimento de análise deve considerar a natureza do problema como um todo, o que requer pleno conhecimento sobre a precisão e exatidão requeridas, a disponibilidade de amostra, o intervalo de concentração a ser medido, os interferentes potenciais, as propriedades físicas e químicas da matriz e a quantidade de medidas a serem efetuadas. Neste artigo descreve-se o uso dos equipamentos mais comuns em laboratórios, especificamente as balanças analíticas, os pHmetros e os espectrofotômetros UV-Vis, incluindo informações gerais sobre o uso apropriado de cada um deles e os cuidados operacionais que devem ser tomados durante as operações em laboratório.
Lucy Seki (1939-2017) em primeira pessoa do singular
Authors: Cruz Aline da , Coelho Olga
Published: March 2019

Este texto resulta da edição de uma entrevista concedida por Lucy Seki ao Projeto Primeira Pessoa do Singular, do Centro de Documentação em Historiografia Linguística do Departamento de Linguística da Universidade de São Paulo (CEDOCH – DL – USP). A entrevista, gravada, foi realizada na casa da pesquisadora em Campinas, em 2000, por Aline da Cruz e Olga Coelho. A presente edição, seguindo diretrizes do projeto, procurou manter a espontaneidade e o conteúdo do depoimento da entrevistada, mas omite perguntas, altera a ordem de certas informações, evita repetições e digressões próprias da fala. As fitas e as transcrições da entrevista foram agregadas ao acervo do CEDOCH. Agradecemos a Cristina Altman, idealizadora e coordenadora do Projeto Primeira Pessoa do Singular, pelo incentivo para que, nós, então jovens pesquisadoras do CEDOCH, realizássemos a entrevista; e a Lucy Seki, pela generosidade com que nos recebeu em sua casa e pela atenção em rever este material, dez anos após a realização da entrevista. Os erros e omissões são de responsabilidade das respectivas autoras.
DERADIKALISASI PEMBELAJARAN PENDIDIKAN AGAMA ISLAM (PAI) MODEL KEBERAGAMAAN INKLUSIF DIKALANGAN SISWA SMA
Authors: Abdurrohman Abdurrohman
Published: March 2019

The phenomenon of religious radicalism has become a global threat of the 21st century that phenomenon was a result of Islam as anaccused religion and was often associated with a terrorist religion. Educational institutions often "suspected" in creating of terrorists’ generations because the content material of Islamic Religious Education Study was dogmatic, indoctrinated, and related to proselytizing spirit that confirms truth claims. Anyway, substance of instructional materials used in senior high school does not contain inclusive religious content so it can create an exclusive and intolerant religious behavior among senior high school students. The aim of this study; 1).Providing foothold among students of theological and sociological thinking and behavior in order to have an inclusive and tolerant religiosity 2).Deploying and seeding ideas and behavior of an inclusive and tolerant religiosity as a form of resistance ideology (de-radicalization). 3). Filling the void literature Islamic Religious Education Study particular model of inclusive diversity relevant to mainstream Islam in Indonesia. To counteract the religious radicalism among students, the teaching material of Islamic Religious Education Study must contain religious inclusive content incorporating the teachings of Islam as a religion Rahmatan Lil Alamin, a religion of tolerance which is supported by the argument of the Qur'an and hadith. By using this model of teaching materials is expected of senior high school students have an inclusive religious behavior that is relevant to the character and Indonesian Islam mainstream in order to prevent radicalism behavior among senior high school students.

 

Keywords: Islamic Religious Education, Inclusive Diversity, De-Radicalism
POVERTY RATE DURING THE 1998 AND 2008 CRISIS PERIOD IN 5 ASEAN COUNTRIES
Authors: Firmansyah Ridho , Kusreni Sri
Published: March 2019

This study aims to examine and analyze the effect of GDP per capita, Inequal distribution of income, unemployment, population growth and government spending on education on poverty in five ASEAN countries. This study uses panel data regression equation using the Fixed Effect Model (FEM). The results showed that the effect of GDP per capita, Inequal distribution of income, unemployment, population growth and government spending on education affects simultaneously on poverty. While partially each independent variable have different effect on poverty in five ASEAN countries.
PERAN KOMISI PENANGGULANGAN AIDS DAERAH (KPAD) DALAM PENANGGULANGAN HIV DAN AIDS DI KABUPATEN KOTAWARINGIN TIMUR
Authors: Puadi Akhmad Rianor Asrari , Qomaruddin M. Bagus
Published: March 2019

Response to HIV and AIDS requires a approaches by the parties mutually integrated. Regional AIDS Commissions (KPAD) has a crucial role in the response to HIV and AIDS. This study aimed todescribe the role of KPAD well as some of the factors inhibiting the implementation of the HIV and AIDS in East Kotawaringin. Used qualitative methods to conduct a document review and in-depth interviews with all fi ve informants which is representative of several agencies that have links to the eff orts to combatHIV and AIDS, with purposive sampling method. The Results were analyzed by means of reduction, presentation, and verifi cation of data. Results showed reduction carried through socialization andeducation about HIV and AIDS in the various elements of society, the establishment of working group of the Pal 12, formed the group “Concerned citizens of AIDS” as well as the ARV (Antiretroviral) services is not limited to a minimum value of CD4. The results showed that KPAD role in response to HIV and AIDS can not be implemented to the fullest, this is due to several obstacles, namely the existence of localization is an determinant spread of cases, the unavailability of services and ARV in all health centers, the lack of cross-sectoral cooperation, fi nancial support from the government is minimal, and the lack of HIV and AIDS Regional Regulation (Perda).Keywords: Response to HIV and AIDS, AIDS Prevention and Control Commission (KPAD)
Ideas and Interests: European Democracy Aid and the Democracy-Security Dilemma, 1990-2010
Authors: Scott James M. , Scott Brandy Jolliff
Published: March 2019

Since
the end of the Cold War, advanced democracies have enacted explicit strategies
of democracy promotion by providing assistance to governments, political
parties, and other non-governmental groups and organizations all over the
world. This paper examines the factors shaping European Union democracy aid allocation
decisions from 1990-2010, weighing the relative impact of ideational concerns
(regime type, human rights) and self-interests (political, security, economic).
We argue that EU democracy aid reflects a “democracy-security dilemma” as the
EU balances ideational reasons for promoting democracy with concerns over
political and economic relationships, regional stability, and security. We test
our hypotheses with a series of random effects, generalized least squares and
Heckman selection models, which provide support for our argument. The paper
concludes with a discussion of the implications of these findings for the
impact and explanation of EU democracy promotion policies.
Killer Activity of Hanseniaspora uvarum Isolated from Dates Vinegar: Partially Purification and Characterization of Killer Toxin
Authors: Et al. Hameed
Published: March 2019

This study was conducted to isolate and identify killer yeast Hanseniaspora uvarum from dates vinegar and measurement the ability of this yeast to produce killer toxin. The antimicrobial activity of the concentrated supernatant containing partially purified concentrated killer toxin was also detected against several pathogenic bacteria and yeast species, which includes two types of yeast Rhodotorula mucilaginosa and Candida tropicalis and four human pathogenic bacteria Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeurginosa. In addition, the antagonistic activity of examined yeast have been studied toward four types of fungi, where two are pathogenic for human Trichophyton mentagrophytes and Trichophyton rubrum and two are plant pathogens Fusarium solani and Sclerotinia sclerotiorum. The results of killer toxin production experiments revealed the ability of yeast to produce killer toxin with molecular weight at 18 kDa by 12 % SDS electrophoresis. The optimal conditions for killer toxin production were studied, and their antimicrobial activity was determined. The results revealed that killer toxin production was increased at 4 % NaCl, the highest inhibtion zone was 20 mm for S. aureus, while the lowest inhibition zone was 7 mm for E. coli. Killer activity was increased at pH 4 and the best inhibtion zone obtained was about 16 mm for K. pneumoniae, while 8 mm for E. coli and C. tropicalis. The temperature was also affect the production of killer toxin, where 25 °C is the best temperature for toxin production of examined yeast, The best killer activity was 21 mm for C. tropicalis. The antagonistic activity of killer yeast H. uvarum toward pathogenic fungal growth was determined and showed killer activity about 61.11, 44.44, 33.33 and 24.44 % against T. mentagrophytes, T.  rubrum, F. solani and S. sclerotiorum in comparison to the control.
Bioremediation of Petroleum Hydrocarbons Contaminated Soil using Bio piles System
Authors: Et al. Jabbar
Published: March 2019

This study was focused on biotreatment of soil which polluted by petroleum compounds (Diesel) which caused serious environmental problems. One of the most effective and promising ways to treat diesel-contaminated soil is bioremediation. It is a choice that offers the potential to destroy harmful pollutants using biological activity.

Four bacterial strains were isolated from diesel contaminated soil samples. The isolates were identified by the Vitek 2 system, as Sphingomonas paucimobilis, Pentoae species, Staphylococcus aureus, and Enterobacter cloacae. The potential of biological surfactant production was tested using the Sigma 703D stand-alone tensiometer showed that these isolates are biological surfactant producers. The better results of the surface tension reduction test were obtained using the mixed bacterial culture which reduced the surface tension of the medium from 66mN/m to 33.89mN/m. For further evidence of the biodegradation effect of these isolates individually and as a mixed culture, which was supported by the use of Gas-Chromatography technology confirming the occurrence of biodegradation.

The capability of mixed bacterial culture was examined to remediate the diesel contaminated soil in bio piles system. Two pilot scale bio piles (25 kg soil each) were constructed containing soils contaminated with approximately 2140 mg/kg total petroleum hydrocarbons (TPHs). Both systems were equipped with oxygen to provide aerobic conditions, incubated at ambient temperature and weekly sampling within 35 days (during summer season). Overall 75.71 % of the total petroleum hydrocarbons were removed from the amended soil and 33.18 % of the control soil at the end of study period. The study concluded that the ex-situ bioremediation (bio piles) is a good option for treating the soil contaminated with diesel as economical and environmentally friendly.
Enhancement of Hydrothermally Co3O4 Thin Films as H2S Gas Sensor by Loading Yttrium Element
Authors: Et al. Hamdan
Published: March 2019

The gas sensing properties of Co3O4 and Co3O4:Y nano structures were investigated. The films were synthesized using the hydrothermal method on a seeded layer. The XRD, SEM analysis and gas sensing properties were investigated for Co3O4 and Co3O4:Y thin films. XRD analysis shows that all films are polycrystalline in nature, having a cubic structure, and the crystallite size is (11.7)nm for cobalt oxide and (9.3)nm for the Co3O4:10%Y. The SEM analysis of thin films obviously indicates that Co3O4 possesses a nanosphere-like structure and a flower-like structure for Co3O4:Y.

The sensitivity, response time and recovery time to a H2S reducing gas were tested at different operating temperatures. The resistance changes with exposure to the test gas. The results reveal that the Co3O4:10%Y possesses the highest sensitivity around 80% at a 100oC operating temperature when exposed to the reducing gas H2S with 0.8sec for both recovery and response times.
Faber Polynomial Coefficient Estimates for Subclass of Analytic Bi-Bazilevic Functions Defined by Differential Operator
Authors: Et al. Juma
Published: March 2019

In this work,  an explicit formula for a class of Bi-Bazilevic univalent functions involving differential operator is given, as well as the determination of upper bounds for the general Taylor-Maclaurin coefficient of a functions belong to this class, are established Faber polynomials are used as a coordinated system to study the geometry of the manifold of coefficients for these functions. Also determining bounds for the first two coefficients of such functions.

         In certain cases, our initial estimates improve some of the coefficient bounds and link them to earlier thoughtful results that are published earlier.
Experimental Investigation on Clay-Fluid Interactions for Enhanced Wellbore Stability
Authors: Al-Arfaj Mohammed , Amanullah Md.
Published: March 2019

The use of water-based drilling fluids to drill shale formations causes wellbore stability problems as a result of the reaction of water with clay minerals. When it comes in contact with water, clay starts to react, swell and/or disperse leading to shale disintegration and sloughing. Consequently, tight hole might develop and/or higher solids loading in the wellbore might be experienced and, hence, the chance to get stuck pipe increases and the hole cleaning efficiency of drilling fluid decreases significantly.

This paper describes the experimental work conducted on four shale samples to assess clay-fluid interactions and shale stabilization. After conducting mineralogical analysis using X-ray diffraction, shale inhibition tests including dispersion and swelling tests were carried out using de-ionized water, 5% potassium chloride brine and 5% Polyamines solution. The work has been extended to cover different pure clay samples: sodium montmorillonite, illite and illite smectite mixed layer.

Cation exchange capacity results showed high reactivity in sodium montmorillonite and illite-smectite mixed layer as they are more willing to exchange cations and adsorb water at natural conditions. Similarly, shale samples with higher concentration of smectite and illite-smectite showed higher CEC values. Dispersion results showed that shale recovery percentages varied from 30.8% for shale sample dominated by kaolinite to 98.65% for those with low kaolinite content. For the high kaolinite sample, the recovery percentage jumped from 30.8% to 59% with potassium chloride and eventually to 85.5% when the polyamine solution was used. When the samples were tested in the swell meter, results showed higher swelling percentage values for those samples with higher smectite content followed by illite while two samples showed no potential swelling as they have low clay content of less than 15%.
Integrated Asset Operating Model Fosters Digital Oil Field Journey to Operational Excellence
Authors: Rubio Erismar , Bin Amro Ahmed Abdulla , Al Hebsi Jawaher Nasser , Davila Rayner , Reddicharla Nagaraju
Published: March 2019

Integrated Asset Operating Model is a holistic approach that fosters several processes such as data consistency, production optimization, well monitoring, field performance, allocation and target compliances; providing efficient and faster decision-making to improve reservoir management, flow assurance and production/process facility optimization. The integration of static and dynamic data from subsurface to surface, combined with real time data acquisition and automation, enable proactive surveillance routines that allow engineers to timely focus on problematic wells and opportunity generation that support the execution of the business plan in a more coherent and reliable fashion; evidenced by satisfactory results.

The process of improvement in an organization often involves change of management, clear communication channels, well defined goals and key health indicators to evaluate performance and take timely remedial actions when is required. IAOM has enabled continuous improvement year after year by following systematic operational workflows and processes that promotes collaboration and alignment among the different disciplines, and effectively translate objectives and opportunities into measurable success indicators to ensure that asset can performs toward value creation.

This paper brief some of the successful best practices applied in a Middle East Digital Oil Field (DOF) after 10 years of Integrated Asset Operating Model (IAOM) implementation; and its journey to operational excellence, using as frame reservoir management guidelines, automation and a collaborative work environment; embedded in daily operational routine tasks with an annual quantified gain of 5-12% out of the total field production; as well as others intangible benefits such as: ensure safe operations, increase efficiency, minimize risk and cost, real-time follow up on events and quick detection of possible production bottlenecks. Finally, this work demonstrates how IAOM helps to bring together ideas, data, knowledge, capability, technology, processes, performance, risks and uncertainties, in today’s hydrocarbon field development planning, embracing a multidisciplinary team to pursuit operational excellence, achieving high performance, lower operational cost while creating value for all stakeholders.
Mycosynthesis of Size-Controlled Silver Nanoparticles through Optimization of Process Variables by Response Surface Methodology
Authors: SHAHZAD ASMA , IQTEDAR MEHWISH , SAEED HAMID , HUSSAIN SYED ZAJIF , CHAUDHARY ASMA , ABDULLAH ROHEENA , KALEEM AFSHAN
Published: March 2019

The present study was carried out to reduce the size of silver nanoparticles (AgNPs) by optimizing physico-chemical conditions of the Aspergillus fumigatus BTCB10 growth based on central composite design (CCD) through response surface methodology (RSM). Variables such as a concentration of silver nitrate (mM), NaCl (%) and the wet weight of biomass (g) were controlled to produce spherical, monodispersed particles of 33.23 nm size, observing 78.7% reduction in size as compared to the initially obtained size that was equal to 356 nm. The obtained AgNPs exhibited negative zeta potential of –9.91 mV with a peak at 420 nm in the UV-Vis range whereas Fourier Transform Infrared (FT-IR) analysis identified O–H, C = C, C ≡ C, C–Br and C–Cl groups attached as capping agents. After conducting RSM experiments, a high nitrate reductase activity value of 179.15 nmol/h/ml was obtained; thus indicating a likely correlation between enzyme production and AgNPs synthesis. The F-value (significant at 3.91), non-significant lack of fit and determination coefficient (R2 = 0.7786) is representative of the good relation between the predicted values of response. We conclude that CCD is an effective tool in obtaining significant results of high quality and efficiency.
The volatility model of the ASEAN Stock Indexes
Authors: Santi Singagerda Faurani , Septarina Linda , Sanusi Anuar
Published: March 2019

This research study examines the characteristics of the Association of Southeast Asian Nations (ASEAN) volatility of stock indexes. The following models are used in this research: Generalized Autoregressive Conditional Heteroscedasticity (GARCH), Exponential Generalized Autoregressive Conditional Heteroscedasticity (EGARCH), Fractionally Integrated Generalized Autoregressive Conditional Heteroscedasticity (FIGARCH), Glosten Jaganathan Runkle Generalized Autoregressive Conditional Heteroscedasticity (GJR-GARCH), and Multifractal Model of Asset Return (MMAR). The research also used the data from the ASEAN country members’ (the Philippines, Indonesia, Malaysia, Singapore, and Thailand) stock indexes for the period from January 2002 until 31 January 2016 to determine the suitable model.Meanwhile, the results of the MMAR parameter showed that the returns of the countries have a characteristic called long-term memory. The authors found that the scaling exponents are associated with the characteristics of the specific markets including the ASEAN member countries and can be used to differentiate markets in their stage of development.
Finally, the simulated data are compared with the original data by scaling function where most of the stock markets of the selected ASEAN countries have long-term memory with the scaling behavior of information asymmetry. Some of the countries such as the Philippines and Indonesia have their own alternative models using GARCH and EGARCH due to the possibility of leverage. Generally, MMAR is the best model for use in ASEAN market, because this model considered Hurst exponent as a parameter of long-term memory that indicates persistent behavior.
Evaluation of choroidal thickness and anatomical and optical parameters of the eye in the early period after orthokeratology myopia correction
Authors: Milash S. V. , Tarutta E. P. , Epishina M. V. , Markossian G. A. , Ramazanova K. A.
Published: March 2019

Purpose: to evaluate subfoveal choroidal thickness (SFCT) and other anatomical parameters of the eye in the early stages after orthokeratological correction of myopia. Material and Methods. The study was conducted on 20 myopic Caucasian patients (40 eyes) with moderate myopia. The main group consisted of 10 children with myopia -4.5 ± 1.03 D aged 11 ± 2.26 years, who were examined before the correction with orthokeratological lenses (OK-lenses) ESA-DL (Dr Lens Tehno, Russia) and 3 weeks after it. The control group comprised 10 patients (20 eyes) with myopia -3.84 ± 1.12 D aged 11.6 ± 1.17 years, who wore monofocal glasses as a correction. SFCT was measured with RS-3000 Advance optical coherent tomograph (OCT) (Nidek, Japan), while axial length (AL), peripheral eye length (PEL), and anterior chamber depth (ACD) was measured with IOL Master 500 optical biometer (Carl Zeiss, Germany), and central cornea thickness (CCT), epithelial thickness (ET) and corneal stroma (ST) thickness, with OCT Avanti Rtvue XR (Optovue, USA). All patients were tested before and 3 weeks after the start of wearing lenses or glasses. Results. SFCF increased by 24.25 ± 19 μm as compared with changes in the control group (p < 0.001) after 3 weeks of wearing OK-lenses. A notable negative correlation of changes in AL and SFCT was revealed in the main group (r = -0.48). CCT decreased by 14.6 ± 2.54 μm in the group wearing OKlenses. The main OK-lens contribution to the statistically significant change in the CCT concerned the epithelium, whose thickness showed a 12.7 ± 1.58 μm (22.6 %) change as compared with the initial data (p < 0.001) and with the change in the control group (p < 0.001). The decrease in AL showed an insignificant correlation with the decrease in the CCT: r = 0.16. ACD, PEL and ST did not change significantly (p > 0.05). Conclusion. SFCT shows an increase in the early stages after OK correction. When controlling the growth of the eye in patients with OK lenses, we need to take into account the impact of the choroid on the results of AL measurement.
Blood glucose level impact on biometric parameters, refraction and intraocular pressure in patients with subcompensated insulin-requiring type II diabetes
Authors: Mineeva L. A. , Balashevich L. I. , Kozhukhov A. A. , Baranov A. A. , Shubin L. B. , Kabanov A. V.
Published: March 2019

Purpose. To study the relationship of biometric parameters, visual acuity, eye refraction and intraocular pressure (IOP) with blood glucose levels and glycated hemoglobin (HbA1c) in patients with subcompensated insulin-requiring type II diabetes mellitus. Material and methods. Ophthalmic monitoring lasted 3 years, the experience of insulin therapy — 6 years. 32 patients (27 women and 5 men) with insulin-requiring diabetes mellitus and no severe general diabetic complications or concomitant eye pathology were monitored for 3 years. The patients’ average age was 60.4 ± 5.3 years; average weight 94.3 ± 16.5 kg; average height 163.4 cm; average BMI (body mass index) was 29.93 kg/m2, all received insulin treatment for 6 years. Patients determined the level of blood glucose themselves on a daily basis using individual “Accu-Check” and/or “OneTouch select” glucometers, supplemented by endocrinologist checks on scheduled examinations once a month. The level of glycated hemoglobin (HbA1c) was determined once every 3–6 months. The 3-year ophthalmic monitoring involved both eyes and included biomicroscopy, autorefractometry, pneumotonometry, measurement of the anterior-posterior axis, the depth of the anterior chamber and lens thickness; pachymetry of the cornea in the central optical zone, and ophthalmoscopy. Visometry was performed according to ETDRS (Early Treatment Diabetic Retinopathy Study Research Group) requirements. Results. The impact of blood glucose level on visual acuity (Spearman R = 0.18/-0.23, t (N-2) = 1.07/-1.34, p = 0.1) is higher than that of HbA1c (Spearman R = 0.07/-0.15, t (N-2) = 0.4/-0.8, p = 0.65) The higher the glucose level, the lower the depth of the anterior chamber and the shorter the APA. In contrast, the higher the level of HbA1c, the thicker the cornea in the central optical zone. Both the glucose and the HbA1c levels reveal a similar positive correlations with IOP. A refraction shift toward myopia from 42 % to 55 % was shown to correlate to HbA1c, and a  corresponding reduction of hyperopia share was revealed. Conclusions. In patients with  subcompensated insulin-requiring diabetes mellitus type II, biometric parameters, refraction and intraocular pressure are determined by changes in the level of blood glycemia.
Artifacts of optical coherence tomography
Authors: Shpak A. A. , Korobkova M. V.
Published: March 2019

Purpose. To study and classify artifacts of spectral-domain optical coherence tomography (OCT).  Material and methods. The retrospective study included OCT data of 112 patients (112 eyes)  examined on two Cirrus HD-OCTs (Carl Zeiss Meditec) sequentially for three days (macular area examinations, 67 patients) and five days (examination of the optic disc region, 62 people), including 17 people who underwent both types of examination. Both the original scanning data (B-scans) and the results of their subsequent analysis were evaluated for the presence of artifacts. Results. The criteria of OCT artifacts were suggested and their practical classification was proposed, which distinguishes three types of artifacts: segmentation errors/errors in delineation of the optic disc borders, "out-of-register" artifacts and displacement/fallout of B-scans, and eight main causes of artifacts. The frequency of artifacts ranged from 19 % (analysis of the optic disc area) to 37 % (analysis of the macular area) and 65 % (evaluation of the ganglion cell-inner plexiform layer). The most common were segmentation errors in patients with pronounced pathology or epiretinal membranes (fibrosis). Conclusion. Clinically significant OCT artifacts occur in 19–65 % of cases, depending on the analyzed eye fundus structures. The most common artifacts are segmentation errors in patients with pronounced pathology and epiretinal membranes (fibrosis). A practical classification of OCT artifacts is proposed, which distinguishes three main types and the most important causes of their presence.
Prenatal ultrasound diagnosis of dural sinus malformation with thrombosis
on second trimester of gestation
Authors: Yu.V. Shatokha, M.V. Medvedev, O.I. Kozlova
Published: March 2019

A case of prenatal ultrasound diagnosis of dural sinus malformation with thrombosis at 21–22 weeks of
gestation is presented. Pregnancy terminated for medical reasons. Prenatal ultrasound diagnosis and perinatal
outcome of dural sinus thrombosis based on previously published cases are discussed.
At the limit of the possible or beyond the real?
Authors: A.Yu. Blinov , V.A. Konov
Published: March 2019

The importance of biometrics as one of the basic elements of successful prenatal diagnosis is argued.
The results of studies on the estimation of errors in biometric measurements are presented. It is shown that the
accuracy of measuring 0,1 mm in real practice is currently impossible to achieve. The minimum measurement
error can be from 0,5 mm or more under the most favorable conditions. The need for a weighed and cautious
attitude to the work of various algorithms for interpreting the results of biometrics in which the difference
in tenths of a millimeter is important for making a decision about the norm or pathology is important, for
example, the FMF algorithm for estimating the NT.
Corrected transposition of the great arteries and dextrocardia:
a case of prenatal diagnosis of these rare anomalies and literature review
Authors: I.V. Komarova
Published: March 2019

The case of prenatal ultrasound diagnosis of combination corrected transposition of the great arteries
(cTGA) with dextrocardia at 21 weeks of gestation is presented. The high-level ventricular septal defect and
stenosis of pulmonary artery were associated cardiac pathologies. Another anomalies of the fetus were not
detected. The fetus karyotype was normal, defined by classical cytogenetic analysis. The prenatal consultation assessed the prognosis for life and health as unfavorable. According to patient’s decision the pregnancy
was terminated. Literature review of antenatal diagnostics of cTGA and combined cTGA with dextrocardia
and the matters of short- and long-term prognosis for the fetus were presented in the paper. The issues of the
difficulty of detecting cTGA in a fetus and prenatal counseling is discussed, especially in the presence of an
abnormality of the intrathoracic location of the heart.
Prenatal diagnosis of Apert syndrome
Authors: N.P. Veropotvelyan , D.I. Laylo , T.V. Usenko
Published: March 2019

Apert syndrome is a rare monogenic autosomal dominant disorder characterized by severe craniosynostosis, hypoplastic mediofacial structures and symmetric syndactyly of the upper and lower limbs. De novo
case with Apert synclrome fetus was detected prenatally at 19–20 weeks of gestation when echography showed
next pathognomic signs: an abnormal skull shape, frontal bossing, mild pachygyria, severe hypertelorism
bilateral exophthalmos, deep nasal bridge, short upturned nose, prognathia, long filtrum, mild microgenia
and ful syndactyly of the feet and hands. Differential diagnosis with other acrocephalosyndactyly types was
performed. It is considered, that this is the earliest term of this syndrom prenatal diagnosis in a low risk pregnancies with unimpaired family history. By the parents desire this pregnancy was terminated and subsequent
autopsy confirmed the diagnosis of Apert syndrome (acrocephalosyndactyly — type I) one of the hands looks
like mitten the other one has the bucket shape.
Familial case of Fryns syndrome in two fetuses in second trimester
Authors: I.V. Novikova, S.I. Kovalev, E.I. Marakhovskaya
Published: March 2019

Fryns syndrome (FS) is a multiple congenital anomaly syndrome, inherited as an autosomal recessive
defect with diagnostic triad including diaphragmatic hernia, abnormal face, and distal limb anomalies. Two
cases of FS in the fetuses, whose mother had previous affected pregnancy with the infant having diaphragmatic hernia are presented. Both fetuses have atypical limb deformity, ectrodactyly. These cases illustrate
the spectrum of FS and the importance of a family history in fetuses with congenital diaphragmatic hernia.