bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure and properties of nanocrystalline nickel prepared by selective leaching at different temperatures
Authors: Michalcová Alena , Marek Ivo , Len Adél , Heczko Oleg , Drahokoupil Jan , Vojtěch Dalibor , Huber Štěpán , Nováková Radka 
Published: March 2017

Abstract
Nanocrystalline nickel is an interesting material for catalysis, and also, like all nanocrystalline metals, it has potential for structural application. Our aim was to develop a method for preparation of precursor materials for powder metallurgy. Because of this, selective leaching of binary alloy was chosen as it leads to production of nanocrystalline clustered (sub)micro particles. In this work, the preparation of Ni particles by selective leaching of Al matrix from Al-50 wt.% Ni in NaOH water solution is described. It was found that structure and magnetic properties were strongly dependent on leaching temperature, which was proven by characterization of Ni particles leached at −20, 0, 20, 40, 60 and 80°C. The microstructure of as-prepared particles was observed by HRTEM and also by small angle neutron scattering. Magnetic properties were characterized by measuring of saturation magnetization. It was proven that with increased leaching temperature the grain size of prepared nanocrystalline particles increased. Also the value of saturated magnetization follows the same trend. The amount of hydrogen stored in nickel particles is independent on leaching temperature.
Extraction of plutonium(IV) by diglycolamide extractants in room temperature ionic liquids
Authors: Prabhu Dattaprasad R. , Raut Dhaval R. , Murali Mallekav S. , Mohapatra Prasanta K. 
Published: March 2017

Abstract
Extraction of Pu(IV) was investigated using solutions of two diglycolamide extractants viz., N,N,N′,N′-tetra-n-octyldiglycolamide (TODGA) and its branched homolog, N,N,N′,N′-tetra(2-ethylhexyl) diglycolamide (T2EHDGA), dissolved in two imidazolium based room temperature ionic liquids viz., 1-butyl-3-methylimidazolium bis(trifluoromethanesulphonyl) imide ([C4mim][NTf2]) and 1-octyl-3-methylimidazolium bis(trifluoromethanesulphonyl) imide ([C8mim][NTf2]) from aqueous nitric acid medium. The extraction kinetics was found to be extremely slow which is reported for the first time for analogous extraction systems and took as long as 30 h to attain equilibrium D
Pu values. In general, TODGA based solvents showed better extraction of Pu(IV) than the T2EHDGA based solvents, one order of magnitude higher, and though both the ionic liquids ultimately yielded comparable D
Pu values, attainment of equilibrium was slower with [C4mim][NTf2]. The extracted species conformed to 1:1 for TODGA in both the ionic liquids while a mixture of 1:1 and 1:2 species was observed for T2EHDGA at 1 M HNO3 which changed to 1:1 species at 4 M HNO3. The extracted species is proposed to be (Pu(L)x
4+)IL (where, L is the extractant and x=1 or 2) at lower acidities suggesting a cation exchange mechanism which changes over to (Pu(NO3)4⋅L)IL at 4 M HNO3 conforming to a solvation mechanism for all the systems except for T2EHDGA-[C8mim][NTf2]. UV-VIS spectroscopic studies were carried out to throw light on the nature of the extracted species.
Luminescence of uranyl ion complexed with 2,6-pyridine dicarboxylic acid as ligand in acetonitrile medium: observation of co-luminescence
Authors: Maji Siuli , Kumar Satendra , Sankaran Kannan 
Published: March 2017

Abstract
Luminescence from UO2
2+ (uranyl ion) complexed with 2,6-pyridine dicarboxylic acid (PDA) has been studied using acetonitrile (MeCN) as solvent between pH 1.0 and 6.0. The enhancement in luminescence intensity because of sensitization by PDA in the non-aqueous environment provided by the MeCN is found to be one order better than in aqueous medium. The luminescence is further enhanced by about four times following the addition of Y3+; a process known as co-luminescence. This is the first study on co-luminescence of uranyl ion in its PDA complex. Lifetime studies indicate the presence of two species having different micro-environments. Formations of both intra and inter molecular complexes are believed to be responsible for enhancement due to co-luminescence.
Fabrication of a flexible polycarbonate/porphyrin film dosimeter for high dose dosimetry
Authors: Feizi Shahzad 
Published: March 2017

Abstract
Dyed polycarbonate (PC) Radiochromic films with 20 μm thickness were prepared by casting of organic solution of PC containing 0.5 wt.% tetrakis (pentafluorophenyl) porphyrin (TPPF20) on a glass petri dish. Characterization of the film as a routine dosimeter was studied. On subjecting PC/TPPF20 film dosimeter to gamma radiation, a gradual decrease in the color of films was observed. The sensitivity of these films and the linearity of dose-response curves were studied under 60Co γ-rays expose in dose range of 0–100 kGy. The results were compared with the commercial and non-commercial dosimeters. Experimental parameters including humidity, temperature and pre-irradiation (shelf-life) and post-irradiation storage in dark and in indirect sunlight were examined. The maximum absorbance of soret band of TPPF20 had a bathochromic shift and appeared at 414 nm which remained intact in the investigated dose range. The dyed films characteristics were found to be stable enough in media with high degrees of temperature and humidity. The results indicate that radiation induced decoloration of PC/TPPF20 films can be reliably used in high dose dosimetry.
A vércukorértékek nem feltétlenül jellemzik megfelelően a sejtanyagcsere-állapotot
Authors: Simon Kornél , Wittmann István 
Published: March 2017

Abstract: In clinical recommendations the normalized blood glucose level is declared as the main target in therapy of diabetes mellitus, i.e. the achievement of euglycemia is the main therapeutic goal. This approach suggests, that the normal blood glucose value is the marker of the normal carbohydrate metabolism (eumetabolism), and vice versa: hyperglycemia is associated with abnormal metabolism (dysmetabolism). However the question arises, whether identical blood glucose values do reflect the same intracellular biochemical mechanisms? On the basis of data published in the literature authors try to answer these questions by studying the relations between the short/longterm blood glucose level and the cellular metabolism in different clinical settings characterized by divergent pathophysiological parameters. The correlations between blood glucose level and cellular metabolism in development of micro-, and macroangiopathy, in the breakthrough phenomenon, as well as during administration of metabolic promoters, the discrepancies of relation between blood glucose values and cellular metabolism in type 1, and type 2 diabetes mellitus, furthermore association between blood glucose value and myocardial metabolism in acute and chronic stress were analyzed. Authors conclude, that the actual blood glucose values reveal the actual cellular metabolism in a very variable manner: neither euglycemia does mandatorily indicate eumetabolism (balance of cellular energy production), nor hyperglycemia is necessarily a marker of abnormal metabolic state (dept of cellular energy production). Moreover, at the same actual blood glucose level both the metabolic efficacy of the same organ may sharply vary, and the intracellular biochemical machinery could also be very different. In case of the very same longterm blood glucose level the metabolic state of the different organs could be very variable: some organs show an energetically balanced metabolism, while others produce a significant deficit. These inconsistencies between blood glucose level and cellular metabolism can be explained by the fact, that blood glucose value is a transport parameter, reflecting the actual steady state of glucose transport from the carbohydrate pools into the blood, and that from the blood into the tissues. Without knowing the speed of these transports of opposite direction, the blood glucose value per se can not reveal the quantitative and qualitative characteristics of cellular metabolism. Orv. Hetil., 2017, 158(11), 409–417.
Questões de gênero e homossexualidade na literatura cordelista brasileira
Authors: Cunha Andréa Mendonça , Mariano Márcia Regina Curado Pereira 
Published: March 2017

<p>Este<strong> </strong>artigo visa observar a construção de imagens discursivas em narrativas cordelistas. Com esse intuito, a partir de Aristóteles (2011) e Perelman e Olbrechts-Tyteca (2005), traçamos um breve panorama acerca da antiga retórica e da retórica contemporânea, adentrando nas definições de ethos e pathos, que são tomados como elementos fundamentais para a persuasão. Em seguida, discorremos sobre a literatura de cordel no tocante as suas características e temáticas, e sobre questões de gênero e homossexualidade, explorando os conceitos de identidade, orientação e estereótipo. Por fim, apresentamos a análise do cordel “Corno, bicha e sapatão: os sacanas de hoje em dia’’, de José Francisco Borges, a fim de mostrarmos a imagem discursiva preconceituosa que o orador constrói do homossexual e que reflete a imagem de si mesmo e do povo brasileiro. Para isso, retomamos ainda as noções de tematização e de figurativização da semiótica greimasiana, que auxiliam na depreensão desses ethé. </p>
Prevalence of metabolic syndrome in type 2 diabetes mellitus presenting to tertiary health care centre
Authors: Chavan Sheshrao Sakharam , Birajdar Sidheshwar Virbhadraappa , Mundhe Sanjay Arun , Jain Ashish Kumar 
Published: March 2017

Background: Diabetes is a syndrome of hyperglycemia and disturbances of carbohydrate, fat and protein metabolism associated with absolute or relative deficiencies in insulin secretion. Association of metabolic abnormalities represents a highly atherogenic state promoting the formation and growth of atheroma plaques in arteries. Hyperinsulinaemia/insulin-resistance and the underlying consequences are associated with presence of cardiovascular risk factors even in the absence of diabetes. Present aim is to study the prevalence of Mets in type 2 DM.Methods: 100 patients with known diabetes were included. Data was collected with predesigned and pretested questionnaire. Data collected was history, clinical examination and investigations like CBC, KFT, LFT and lipid profile USG abdomen.Results: A total of 100 known type 2 diabetics were enrolled in this study. Forty-eight (48%) were females and fifty-two (52%) were males. The mean age of the study participants was 55.2 years. Seventy-seven (77%) were diagnosed to have Mets. Frequency of Mets increased with age. Risk of fatty liver in Mets was 10 times than that those with fatty liver in diabetes (odds ratio -10.65 with p<0.005). Low HDL was most frequent factor 83.11% and was equally distributed in both sexes. Hypertension was second most frequent factor 81.81% and was more prevalent in female.Conclusions: The prevalence of the metabolic syndrome in type 2 DM is high in both genders and increases with age thus posing a potential high cardiovascular risk. The modifiable risk factors should be a focus point in the management of type 2 DM.
Entre o sujeito e a cidade: reflexões sobre a experiência do corpo em movimento
Authors: Bandeira Ângelica Carvalho , Kneib Érika Cristine 
Published: March 2017

Este artigo investiga a possibilidade ou ideia do caminhar como método ou ferramenta de trabalho no campo urbanístico, uma prática cotidiana que poderia influenciar no modo de projetar em função do sujeito. Como parte de uma pesquisa abrangente em andamento, neste artigo, essa investigação busca repertório nas temáticas sobre experiência, corpo e movimento, a partir do pensamento pós-moderno na produção dos autores Tschumi, Agrest, Sennet, Careri e Jacques, que percorrem o século XX ao século XXI. A pretensão central e inicial consiste para tanto, em elaborar argumentos ou reflexões para direcionar outros modos de apreender, de fazer e de pensar a cidade contemporânea brasileira.
Potências inscritas no corpo: do flâneur ao cruiser
Authors: Costa Flávia Nacif da , Ferreira Thiago Vinícius 
Published: March 2017

A partir da constatação da atual condição do corpo no que tange à experiência espacial – uma relação apática, efêmera e descontraída, tendo por objetivo a sensibilização para a experiência do corpo, especialmente nas escalas íntimas – em uma micropercepção –, este trabalho se apoia nas figuras do flâneur e do cruiser para tecer sua discussão principal: pensar as lacunas encontradas na apropriação do espaço a partir das potências do corpo na condição contemporânea. Para isso, elege-se o movimento do cruising como ponto de partida para a revisão da relação corpo-espaço no desenvolvimento da experiência estética na cidade, identificando novas potencialidades junto ao objeto arquitetônico.
Escritas reflexivas de professores que ensinam matemática enquanto desenvolvem produtos educacionais, coletivamente
Authors: Sousa Mariado do Carmo de 
Published: March 2017

Este artigo apresenta escritas reflexivas de professores da Educação Básica que ensinam Matemática, decorrentes de sínteses individuais e coletivas feitas durante uma investigação qualitativa, do tipo participante e longitudinal, com metodologia de trabalho denominada parceria colaborativa, cuja temática se relacionou ao desenvolvimento de produtos educacionais. A partir de análise interpretativa definiram-se os eixos temáticos: dificuldades e questionamentos de professores sobre implementação curricular que desconsideram suas participações; definição do conceito de atividade de ensino; e questionamentos sobre verdades matemáticas apresentadas na formação de professores e o fazer docente. As escritas reflexivas permitiram compreender discursos pedagógicos norteadores das práticas escolares de professores, revelaram angústias que se manifestaram durante o processo de constituírem-se profissionais do ensino e problematizaram a organização do ensino que ministram.
Organização do ensino de matemática na perspectiva histórico-cultural: um processo didático-formativo
Authors: Franco Patrícia Lopes Jorge , Longarezi Andréa Maturano , Marco Fabiana Fiorezi de 
Published: March 2017

O artigo apresenta contribuições da perspectiva histórico-cultural e Teoria da Atividade no processo formativo de uma professora de matemática do Ensino Fundamental, na escola pública municipal de Ituiutaba – MG. A partir de Leontiev (1978), Davidov (1986), Vigotski (1984) problematiza como a organização do ensino para o desenvolvimento do pensamento e conceitos teóricos algébricos, se constitui em conteúdo e forma do processo formativo da professora. A pesquisa desenvolve-se pelo materialismo histórico-dialético e caracteriza-se como de intervenção didático-formativa. Durante o processo são produzidos, colaborativamente, três atividades orientadoras de ensino com conceitos algébricos, dentre as quais se discute um episódio composto de uma cena, com três unidades de análise: compartilhamento/interações; apropriações/objetivações; atribuição de sentido. As unidades revelam o modo da professora atribuir sentido às ações na práxis docente, na unidade de sua atividade prática e teórica.
Conversion of Glenohumeral Fusion to Reverse Total Shoulder Arthroplasty
Authors: Toney C. Brian , Thompson Matthew J. , Barnes Brandon J. , Boardman N. Douglas 
Published: March 2017

Case:
A 41-year-old woman presented 5 years after glenohumeral arthrodesis. She experienced symptomatic relief following conversion to reverse total shoulder arthroplasty, regaining nearly full passive range of motion and >50% of normal active forward flexion, abduction, internal rotation, and external rotation.

Conclusion:
Conversion from glenohumeral arthrodesis to reverse total shoulder arthroplasty in a patient with a functioning deltoid and adequate bone stock may provide symptomatic relief and improved function in the setting of symptomatic glenohumeral arthrodesis refractory to conservative measures.
Comparing Fitness to Work Assessments on Offshore Employees Using Telehealth Versus Conventional Method
Authors: Mohamed Abdul Halim , Mohd Shaffi Mohamad Sabri , Rao Prakash 
Published: March 2017

Abstract
Illnesses which can be easily managed in the urban setting (e.g. an asthmatic attack) may result in a crisis when it occurs at a remote oil and gas facility. To mitigate risks, most offshore operators mandate regular medical assessments on offshore workers. These medical assessments for fitness to work (FTW) are normally conducted face-to-face, at a physician's clinic onshore. They are conducted when the employee has been demobilised from the offshore platform (i.e. during their rest days). Recent technological advances have allowed physicians to conduct FTW assessments remotely using telehealth equipment. This presents oil and gas operators with the opportunity to save on consultation and travel costs, as well as the time taken to pursue an assessment.
Overcoming Challenges in Respirator Fit Testing in Upstream Malaysia
Authors: Hamzah Rosnan , Ain Zali Nurul , Yusoff Nor Hashim 
Published: March 2017

Abstract

Objective/Scope
An approach to established governance in respirator fit testing for Malaysia Upstream, where previously the practice were inconsistently meeting regulatory expectation. Base on survey conducted, small number of the upstream operators/service providers has a program in place and number of the respirator user that had undergone the periodic fit test were extremely low. The challenges in establishing the governance were unfamiliarity of the industry on the respiratory fit testing objectives and requirements, unavailability of specific guidelines and scarcity of competent fit tester in Malaysia which are also common challenges across the other industries in Malaysia.

Method/Procedure/Process
PETRONAS Guidelines For Respirator Fit Testing Programme for Upstream Oil and Gas in Malaysia which served as the main governance document, was established through (1) benchmarking of standards and methods, (2) stakeholders and experts input and (3) practicality of implementation in Malaysia. The establishment of the MPM Respiratory Fit Testing Advisory Panel serve as to provide strategic outlook on the respirator fit testing program in Malaysia including growth and continuous development of competent fit tester. Process for application, appointment and assurance was established to maintain the minimum standard for MPM Approved Fit Tester. Communication and promotion campaign was conducted to reach the potential service and training providers as to increase the number of competent fit tester.

Result/Observation/Conclusion
The governance guideline had obtain recognition by Department of Occupational Safety and Health (DOSH) to be implemented in the Upstream Malaysia. Six month after the enforcement date of the guideline, a total of more than 3000 workers has undergo fit testing. As to date, the number of MPM Approved Fit Tester has grown to 82and increasing, to meet the demand of the periodic fit testing.

Novel/Additive
A comprehensive approach for solution on HSE governance begin with situational assessment, benchmarking, to solution for system and mechanism for successful and sustainable respirator fit testing program in Upstream Malaysia.
Achieving Common Requirements for Improved Safety and Efficiency
Authors: Popat N. , Hawkes C. , Bergeron S. , Carvalho M. , Cruickshank K. , Devincq S. , Gratz G. , Mugno A. , Perkins B. , Stroud D. , Sotoudehmanesh S. , Trapp J. , Burton A. , Vassiliev N. , Valdes O. Reyes 
Published: March 2017

Abstract
The list of 13 fabrication site hazardous activities has been derived from focusing on the areas where significant incidents or near misses with fatality potential have occurred, while also taking into account existing safety practices common within the industry. Analysis of 10 years of IOGP incident data validated the final selection of the recommended practices by the IOGP Task Force. The IOGP Fabrication Site Construction Safety (FSCS) Recommended Practices document will provide standardized minimum requirements for addressing safety risks associated with the 13 listed hazardous activities, as well as a general section that addresses site-wide requirements. The objective of the FSCS Recommended Practices is to support the use of fabrication site specific construction practices that meet or exceed the requirements of the IOGP Recommended Practices, independently of the customer.
This paper uses the on-going development of the IOGP FSCS Recommended Practices as a case study on how to drive for greater industry consistency to achieve a safer work environment and to remove inefficiencies.
Offshore Self-Regulation OSR Implementation in Malaysia Upstream Activities
Authors: Ghani Abdullah Abdul , Md Sodari Mohd Dali , Abd Rashid Rashidah Lailiah , Hazlim Husain M , Abdullah Fakrul , Samat Siti Mariam 
Published: March 2017

Abstract
The objective of this paper is to share the successful implementation of offshore self regulation in Malaysia upstream activities. Post P.U.(A) 106 Exemption Order gazetted by the Malaysian Authority to PETRONAS in 2013, Offshore Self Regulation Management System (OSRMS) was established to demonstrate compliance with this Order through strategic collaboration between PETRONAS and Malaysia Government Authority i.e. Department of Occupational Safety & Health (DOSH). Annual activities are deliberated in a joint Technical Working Committee and implementation is steered by a Joint Management Committee. The Offshore Self Regulation (OSR) allows operators to manage and sustain safe operation of all offshore facilities using their own management processes in lieu of prescriptive regulation.
One of the exemption order conditions is related to determination and certification of eligible Inspector (then known as an OSR Inspector) to examine the integrity of certificated machinery. This is achieved through joint competency assessment of potential candidates from Petroleum Arrangement Contractors (PAC) and certification by DOSH. At the same time a competency development program is established as an option for potential candidates to prepare themselves to become certified OSR Inspector. Any of assessed candidates with gaps may enhance their competencies through the program.
There are three (3) categories of audits to evaluate the effectiveness of the management system in meeting the OSR objectives. Tier 1 is internal PAC audit, Tier 2 Audit is conducted by PETRONAS and Tier 3 is a joint audit by PETRONAS and DOSH. An effective implementation of offshore self regulation management system would therefore assure the integrity and reliability of the installation or facilities. It will also safeguard the health and safety of those personnel working on offshore installations.
The implementation of self-regulation is benefiting all stakeholders including the owner (PETRONAS), occupiers (PAC operators) and government agency (DOSH) in managing occupational safety and health (OSH) and asset integrity in an efficient and cost effective way.