bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experiences of 6 years quality assurance in obstetrics in Nigeria – a critical review of results and obstacles
Authors: Galadanci Hadiza , Künzel Wolfgang , Zinser Robert , Shittu Oladapo , Adams Stefanie , Gruhl Manfred 
Published: January 2015

AbstractThe objective of this study was to monitor the maternal mortality ratio (MMR) in 19 general hospitals after introducing quality assurance in four states in Nigeria.Data collection with a structured maternity record book started in 2008 in ten rural hospitals in Kano and Kaduna State. In 2011, five hospitals from Federal Capital Territory Abuja were added, whilst in 2013 four hospitals were added from Ondo State. The routine data collection was conducted by experienced midwives and supervised by obstetricians from each of the states. However, the data from all four states were collated centrally at Aminu Kano Teaching Hospital for analysis.From 2008 to 2013, 121,808 deliveries were evaluated; MMR fell from 1380 to 360/100,000 in Kaduna State, whilst for Kano State there was a gradual reduction of MMR from 2100/100,000 in 2008 to 1070/100,000 in 2011, and then it increased to 2150/100,000 in 2013. Ondo state had the lowest MMR of 180/100,000 in 2013 followed by Abuja with 240/100,000. The median cesarean section rate was 8.19%, (range 0.97–22.53%), eclampsia/preeclampsia was 4.43% (range 0–56.55%), and postpartum hemorrhage was 3.36% (range 0.81–11.4%).Quality assurance in rural hospitals generates the awareness necessary to improve maternal health and lead to reduction of MMR.
Nanofiber formation in the presence of an external magnetic field in electrospinning
Authors: Badieyan Saeide S. , Janmaleki Mohsen 
Published: January 2015

Abstract
Electrospinning is an efficient, versatile, and straightforward technique involving the fabrication of very thin fibers from a rich variety of materials. Despite several promising applications, the remaining problem with electrospinning is the unpredictable deposition of the nanofibers. In this study, a mathematical model for a novel magnetic electrospinning process was established on the basis of a set of equations. Then, the model was utilized to analyze the behavior of the created polymer jet numerically using the Runge-Kutta method. The jet was assumed to consist of a number of discrete charged particles connected by viscoelastic segments. The results showed that exerting an appropriate magnetic field (MF) could significantly decrease the radius and the instability of the whipping circles. After fixing the instability as far as possible, it was demonstrated that a properly applied perpendicular MF could largely adjust the target of the polymer jet on the collector.
The Rotating Cavitation Performance of a Centrifugal Pump with a Splitter-Bladed Inducer under Different Rotational Speed
Authors: Guo XiaoMei , Zhu ZuChao , Cui BaoLing , Li Yi 
Published: January 2015

AbstractDesigning inducer is one of the effective ways to improve the suction performance of high-speed centrifugal pumps. The operation condition including rotational speeds can affect the internal flow and external performance of high-speed centrifugal pumps with an inducer. In order to clarify the rotating cavitation performance of a centrifugal pump with a splitter-bladed inducer under different rotational speed, a centrifugal pump with a splitter-bladed inducer is investigated in the work. By using Rayleigh–Plesset equations and Mixture model, the cavitation flow of centrifugal pump is numerically simulated, as well as the external performance experimental test is carried out. It is found that the cavitation area increases with the rotational speeds. The location of the passage where cavitation is easy to appear is explored. Asymmetric cavitation behavior is observed. That, the trail of the inducer is easy to take cavitation when the rotational speed is increased to a degree, is also observed. The trend of
Thyrotoxicosis with absence of clinical features of acromegaly in a TSH- and GH-secreting, invasive pituitary macroadenoma
Authors: Johnston Philip C , Hamrahian Amir H , Prayson Richard A , Kennedy Laurence , Weil Robert J 
Published: January 2015

Summary
A 54-year-old woman presented with bi-temporal hemianopia, palpitations, and diaphoresis. An invasive pituitary macroadenoma was discovered. The patient had biochemical evidence of secondary hyperthyroidism and GH excess; however, she did not appear to be acromegalic. Surgical removal of the pituitary mass revealed a plurihormonal TSH/GH co-secreting pituitary adenoma. TSH-secreting adenomas can co-secrete other hormones including GH, prolactin, and gonadotropins; conversely, co-secretion of TSH from a pituitary adenoma in acromegaly is infrequent.

Learning points

This case highlights an unusual patient with a rare TSH/GH co-secreting pituitary adenoma with absence of the clinical features of acromegaly.

Plurihormonality does not always translate into the clinical features of hormonal excess.

There appears to be a clinical and immunohistochemical spectrum present in plurihormonal tumors.
Adrenal cancer in neurofibromatosis type 1: case report and DNA analysis
Authors: Menon Ravi Kumar , Ferrau Francesco , Kurzawinski Tom R , Rumsby Gill , Freeman Alexander , Amin Zahir , Korbonits Márta , Chung Teng-Teng L L 
Published: January 2015

Summary
Adrenal cortical carcinoma (ACC) has previously only been reported in eight patients with type 1 neurofibromatosis (NF1). There has not been any clear evidence of a causal association between NF1 gene mutations and adrenocortical malignancy development. We report the case of a 49-year-old female, with no family history of endocrinopathy, who was diagnosed with ACC on the background of NF1, due to a novel germline frame shift mutation (c.5452_5453delAT) in exon 37 of the NF1 gene. A left adrenal mass was detected by ultrasound and characterised by contrast computerised tomography (CT) scan. Biochemical tests showed mild hypercortisolism and androgen excess. A 24-h urinary steroid profile and 18flouro deoxy glucose PET suggested ACC. An open adrenalectomy was performed and histology confirmed ACC. This is the first reported case with DNA analysis, which demonstrated the loss of heterozygosity (LOH) at the NF1 locus in the adrenal cancer, supporting the hypothesis of an involvement of the NF1 gene in the pathogenesis of ACC. LOH analysis of the tumour suggests that the loss of neurofibromin in the adrenal cells may lead to tumour formation.

Learning points

ACC is rare but should be considered in a patient with NF1 and adrenal mass when plasma metanephrines are normal.

Urinary steroid metabolites and PET/CT are helpful in supporting evidence for ACC.

The LOH at the NF1 region of the adrenal tumour supports the role of loss of neurofibromin in the development of ACC.
Cardiovascular Risk Factors in Children After Repeat Doses of Antenatal Glucocorticoids: An RCT
Authors: McKinlay Christopher J.D. , Cutfield Wayne S. , Battin Malcolm R. , Dalziel Stuart R. , Crowther Caroline A. , Harding Jane E. ,   on behalf of the ACTORDS Study Group
Published: January 2015

BACKGROUND:Treatment of women at risk for preterm birth with repeat doses of glucocorticoids reduces neonatal morbidity but could have adverse long-term effects on cardiometabolic health in offspring. We assessed whether exposure to repeat antenatal betamethasone increased risk factors for later cardiometabolic disease in children whose mothers participated in the Australasian Collaborative Trial of Repeat Doses of Corticosteroids.METHODS:Women were randomized to betamethasone or placebo treatment, ≥7 days after an initial course of glucocorticoids, repeated each week that they remained at risk for preterm birth at &lt;32 weeks’ gestation. In this follow-up study, children were assessed at 6 to 8 years’ corrected age for body composition, insulin sensitivity, ambulatory blood pressure, and renal function.RESULTS:Of 320 eligible childhood survivors, 258 were studied (81%; 123 repeat betamethasone group; 135 placebo [single course] group). Children exposed to repeat antenatal betamethasone and those exposed to placebo had similar total fat mass (geometric mean ratio 0.98, 95% confidence interval [CI] 0.78 to 1.23), minimal model insulin sensitivity (geometric mean ratio 0.89, 95% CI 0.74 to 1.08), 24-hour ambulatory blood pressure (mean difference systolic 0 mm Hg, 95% CI −2 to 2; diastolic 0 mm Hg, 95% CI −1 to 1), and estimated glomerular filtration rate (mean difference 1.2 mL/min/1.73m2, 95% CI −3.2 to 5.6).CONCLUSIONS:Exposure to repeat doses of antenatal betamethasone compared with a single course of glucocorticoids does not increase risk factors for cardiometabolic disease at early school age.
Arrangements of Fe-Centered Zn12 Icosahedra in Fe-Zn Intermetallic Compounds Determined by Ultra-High Resolution Scanning Transmission Electron Microscopy
Authors: Okamoto Norihiko L. , Yasuhara Akira , Tanaka Katsushi , Inui Haruyuki 
Published: January 2015

ABSTRACTThe crystal structure of the δ1p phase in the Fe-Zn system has been refined by single-crystal synchrotron X-ray diffraction combined with ultra-high resolution scanning transmission electron microscopy. The crystal structure can be described to build up with Fe-centered Zn12 icosahedra. The deformation properties obtained by single-crystal micropillar compression tests of the δ1p phase is discussed in terms of the arrangement of the Fe-centered Zn12 icosahedra in contrast with the ζ phase in the Fe-Zn system.
Postanästhesiologische Tränenproduktion und Irritationen am Auge der Katze
Authors: Köstlin R. , Reese S. , Pieper K. , Peche N. 
Published: January 2015

ZusammenfassungGegenstand und Ziel: Eine Allgemeinanästhesie geht bekanntermaßen mit einer Verminderung der Tränenproduktion einher und auch nach Narkoseende werden nicht sofort wieder physiologische Werte erreicht. Folglich muss während dieser Zeit eine ausreichende Befeuchtung des Auges zum Schutz der Hornhaut gewährleistet werden. Hierzu stehen unterschiedliche Methoden zur Verfügung, wie das Zukleben der Augenlider oder die Applikation von Augensalben, -gelen oder -tropfen. Humanmedizinische Studien belegen, dass die verschiedenen Formulierungen in unterschiedlicher Ausprägung zu Irritationen am Auge führen können. Ziel dieser Studie war, die Tränenproduktionsmenge nach Allgemeinanästhesie bei der Katze und auftretende Augenirritationen hinsichtlich ihrer Pathogenese zu untersuchen. Material und Methoden: Bei 41 Katzen erfolgte nach Allgemeinanästhesie eine Messung der Tränenproduktion und die Augen wurden auf Irritationsanzeichen untersucht. Es kamen zwei unterschiedliche Narkoseprotokolle zur Anwendung und zum Schutz der Hornhaut wurde bei Narkoseeinleitung jeweils in das rechte Auge eine Augensalbe und in das linke Auge ein Augengel appliziert. Ergebnisse: Die Tränenproduktion war auf dem rechten Auge bis 6 Stunden und auf dem linken Auge bis 18 Stunden nach der Narkose signifikant reduziert. Bei 92,7% (n = 38) der Katzen bestand 2 Stunden nach Narkoseende ein Blepharospasmus am rechten Auge, während bei sämtlichen Tieren am linken Auge eine physiologische Lidöffnung vorlag. Schlussfolgerungen: Alle Katzen zeigten, unabhängig von verschiedenen Narkoseparametern, postanästhetisch eine signifikant verringerte Tränenproduktion. Sowohl das Augengel als auch die Augensalbe schützten die Hornhaut ausreichend. Bei gleicher Effektivität sollte jedoch dem Augengel der Vorzug gewährt werden, da davon auszugehen ist, dass die Augensalbe bei der Katze wie auch beim Menschen ein deutliches Fremdkörpergefühl im Auge verursacht.
Cytology of endoscopically obtained biopsies for the diagnosis of chronic intestinal diseases in cats
Authors: Teske E. , Bomhard W. v. , Stockhaus C. , Mangelsdorf S. 
Published: January 2015

SummaryObjective: To evaluate the diagnostic value of cytology of endoscopically obtained biopsies in cats presented for chronic gastrointestinal complaints with emphasis on the diagnosis of low-grade alimentary lymphoma (LGAL). Materials and methods: Data of endoscopically obtained duodenal biopsies from 137 cats were evaluated retrospectively. Cytology was performed using the squash smear technique with subsequent Diff Quick® staining. Pathological findings were categorized according to type and grade of the inflammatory infiltrate. Moreover, reports were reviewed with regard to diagnosis of LGAL. Histopathology reports were analysed correspondingly and compared to cytology results. Histopathological samples were further evaluated by immunohistochemistry (IHC) if a diagnosis of LGAL had been expressed. Results: Squash smear preparation of intestinal biopsies was adequate for cytological examination in > 97% of cases. Using histopathology as gold standard, with cytology, a sensitivity and specificity for detection of a pathologic process in feline intestinal biopsies of 68.1% and 70.6% were calculated, respectively. Regarding the detection of lymphoplasmacytic (LPE) and eosinophilic enteritis a statistically significant correlation with histopathology (p < 0.05) was observed. With regard to grade of the inflammatory infiltrate, a weak correlation was calculated (r = 0.482). Of 21 cats diagnosed or suspected with LGAL by cytology, IHC confirmed nine cases whereas 11 cases were reclassified as LPE. None of the confirmed LGAL had been missed with histopathology. A sensitivity of 60.0% and specificity of 90.6% for cytological detection of feline LGAL was obtained. Conclusion and clinical relevance: The sensitivity of cytology to diagnose LGAL is low and it has no additional significance to histological biopsies.
The human Bosniak model applied to a cat with renal cystadenoma
Authors: Del Chicca F. , Ruetten M. , Gerber B. , Baloi P. 
Published: January 2015

SummaryA 13-year-old domestic shorthair cat was presented with weight loss and azotemia. Abdominal ultrasound revealed a large cystic spaceoccupying lesion with multiple septae in the left kidney. A core needle biopsy yielded a renal cystadenoma originating from the epithelial cells. This report describes the clinical, ultrasonographic and computed tomographic features and the growth progression of a renal cystadenoma. We describe the first attempt to apply the human Bosniak classification to a cat with renal cystic neoplasia to differentiate between benign and malignant lesions. Cystadenoma should be a differential diagnosis in cases of renal cystic space-occupying lesions. Other differentials, imaging features to differentiate benign and malignant lesions and the risk of malignant transformation will be discussed.
La Constitución Política enseñada a alumnos de educación superior no estudiantes de Derecho o ciencias afines: Un reto para la enseñanza
Authors: García Jiménez Carlos Andrés 
Published: January 2015

La Constitución Política de 1991 ordena el estudio del texto constitucional y el fomento de la participación en todas las instituciones educativas del país. La enseñanza de la constitución y el avance en compe- tencias ciudadanas es esencial para el desarrollo de los individuos y los Estados. Es necesario plantear un modelo pedagógico diferente al tradicional en el que se manejan estos temas por personas o estudiantes adscritos a facultades de Derecho o ciencias afines en instituciones de educación superior, el cual deberá ser especialmente diseñado para ciudadanos del común. El nuevo modelo pedagógico debe buscar corregir las falencias del tradicional y ser efectivo frente al cumplimiento de los objetivos de la asignatura y el desarrollo de competencias ciudadanas como se describe en el texto.
Las TIC en la enseñanza de los negocios internacionales Un asunto de competencias comunicativas
Authors: Mora Ramírez Ángela Julieta 
Published: January 2015

Este artículo es una descripción sobre la utilización de las tic en la enseñanza de los negocios interna- cionales, desde las competencias comunicativas, documento, que permite identificar la apropiación de este tipo de competencias en los estudiantes a partir de los primeros semestres de Negocios Inter- nacionales.
Sentidos de la corporalidad en cuerpos intervenidos por la cirugía estética
Authors: Plata Peñafort Vanessa , Torres Sanmiguel Alexander 
Published: January 2015

La siguiente investigación se detiene en el fenómeno del auge de la cirugía estética como forma de moldeamiento de la subjetividad, con las consecuencias que esto trae en el reordenamiento social. Parte del establecimiento de las categorías “cuerpo” y “poder”, y de las dimensiones de corporalidad, intervención estética, subjetividad y exclusión para indagar en narraciones de sujetos con cuerpos intervenidos. De estas narraciones, a su vez, emergen nuevas categorías que, en el cruce con las categorías iniciales, dan cuenta de los sentidos que los sujetos construyen sobre su corporalidad, sentidos que no son estáticos, sino que circulan en los diversos discursos sociales. Las narraciones fueron recogidas principalmente en el Politécnico Grancolombiano y en la Universidad Santo Tomás, por medio de entrevistas no estructuradas.
Editorial
Authors: Escobar Pérez Billy , García López Carlos Augusto 
Published: January 2015

Esta entrega de Panorama da la bienvenida a una nueva y crucial etapa para la publicación. Con el firme compromiso de divulgar los trabajos investigativos más destacados de nuestra institución y para atender a los requisitos de indexación que exige Colciencias, desde esta entrega la revista pasará a publicarse anualmente, cada noviembre. Con nueva periodicidad, Panorama sigue divulgando el trabajo investigativo y el enfoque multidisciplinario que alientan esta función esencial del trabajo académico institucional.
Editorial
Authors: Escobar Pérez Billy 
Published: January 2015

El arte de Educar involucra la interacción entre personas, instrumentos de mediación, entornos de aprendizaje y modelos instruccionales, y su fin último es lograr que los individuos se apropien de un conocimiento especí- fico, que pueda ser usado posteriormente como insumo para la consecución de metas personales y profesionales o para desarrollar teorías y modelos que sean aplicables al sector real y contribuyan con el desarrollo social y económico de las regiones. Bajo esta comprensión de la realidad educativa, la Facultad de Ciencias Sociales de la Institución Universitaria Politécnico Grancolombiano ha estado siempre comprometida en la gestión y conso- lidación de un campo de trabajo para la formación educativa y para la formación de formadores.
Behavioral Implications of Big Data's Impact on Audit Judgment and Decision Making and Future Research Directions
Authors: Brown-Liburd Helen , Issa Hussein , Lombardi Danielle 
Published: January 2015

SYNOPSIS
This paper addresses information processing weaknesses and limitations that can impede the effective use and analysis of Big Data in an audit environment. Drawing on the literature from psychology and auditing, we present the behavioral implications Big Data has on audit judgment by addressing the issues of information overload, information relevance, pattern recognition, and ambiguity. We also discuss the challenges that auditors encounter when incorporating Big Data in audit analyses and the various analytical tools that are currently used by companies in the analysis of Big Data. The manuscript concludes by raising questions that future research might address related to utilizing Big Data in auditing.
Controllability of nonlinear implicit fractional integrodifferential systems
Authors: Balachandran Krishnan , Divya Shanmugam 
Published: January 2015

Abstract
In this paper, we study the controllability of nonlinear fractional integrodifferential systems with implicit fractional derivative. Sufficient conditions for controllability results are obtained through the notion of the measure of noncompactness of a set and Darbo’s fixed point theorem. Examples are included to verify the result.
Improving the stability of discretization zeros with the Taylor method using a generalization of the fractional-order hold
Authors: Zeng Cheng , Liang Shan , Zhang Yuzhe , Zhong Jiaqi , Su Yingying 
Published: January 2015

Abstract
Remarkable improvements in the stability properties of discrete system zeros may be achieved by using a new design of the fractional-order hold (FROH) circuit. This paper first analyzes asymptotic behaviors of the limiting zeros, as the sampling period T tends to zero, of the sampled-data models on the basis of the normal form representation for continuous-time systems with a new hold proposed. Further, we also give the approximate expression of limiting zeros of the resulting sampled-data system as power series with respect to a sampling period up to the third order term when the relative degree of the continuous-time system is equal to three, and the corresponding stability of the discretization zeros is discussed for fast sampling rates. Of particular interest are the stability conditions of sampling zeros in the case of a new FROH even though the relative degree of a continuous-time system is greater than two, whereas the conventional FROH fails to do so. An insightful interpretation of the obtained sampled-data model can be made in terms of minimal intersample ripple by design, where multirate sampled systems have a poor intersample behavior. Our results provide a more accurate approximation for asymptotic zeros, and certain known results on asymptotic behavior of limiting zeros are shown to be particular cases of the ideas presented here.
Further results on robust fuzzy dynamic systems with LMI D-stability constraints
Authors: Assawinchaichote Wudhichai 
Published: January 2015

Abstract
This paper examines the problem of designing a robust H∞ fuzzy controller with D-stability constraints for a class of nonlinear dynamic systems which is described by a Takagi-Sugeno (TS) fuzzy model. Fuzzy modelling is a multi-model approach in which simple sub-models are combined to determine the global behavior of the system. Based on a linear matrix inequality (LMI) approach, we develop a robust H∞ fuzzy controller that guarantees (i) the L2-gain of the mapping from the exogenous input noise to the regulated output to be less than some prescribed value, and (ii) the closed-loop poles of each local system to be within a specified stability region. Sufficient conditions for the controller are given in terms of LMIs. Finally, to show the effectiveness of the designed approach, an example is provided to illustrate the use of the proposed methodology.
A system for deduction-based formal verification of workflow-oriented software models
Authors: Klimek Radosław 
Published: January 2015

Abstract
The work concerns formal verification of workflow-oriented software models using the deductive approach. The formal correctness of a model’s behaviour is considered. Manually building logical specifications, which are regarded as a set of temporal logic formulas, seems to be a significant obstacle for an inexperienced user when applying the deductive approach. A system, along with its architecture, for deduction-based verification of workflow-oriented models is proposed. The process inference is based on the semantic tableaux method, which has some advantages when compared with traditional deduction strategies. The algorithm for automatic generation of logical specifications is proposed. The generation procedure is based on predefined workflow patterns for BPMN, which is a standard and dominant notation for the modeling of business processes. The main idea behind the approach is to consider patterns, defined in terms of temporal logic, as a kind of (logical) primitives which enable the transformation of models to temporal logic formulas constituting a logical specification. Automation of the generation process is crucial for bridging the gap between the intuitiveness of deductive reasoning and the difficulty of its practical application when logical specifications are built manually. This approach has gone some way towards supporting, hopefully enhancing, our understanding of deduction-based formal verification of workflow-oriented models.