bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Study of the Factors Related to Cardiopulmonary Resuscitation Physical Fatigue and the Quality of Resuscitation
Authors: Rad Mojtaba , Rad Mostafa 
Published: March 2017

Summary
Effective chest compression is an important factor playing a key role in the cardiac arrest patient survival. An understanding of the factors causing an early physical fatigue can help to improve the quality of CPR operations in hospitals. Therefore, this study aimed to assess the factors relevant to the onset time of physical fatigue and resuscitation quality during cardiopulmonary resuscitation (CPR) provision by Iranian nurses.
The present cross-sectional study was performed on 194 subjects selected based on a stratified random sampling procedure from different hospital wards. The participants were required to perform CPR operations on a manikin. As they were performing CPR, the time and the quality of compressions were measured by a chronometer and visual analogue fatigue scale, respectively. The rescuers themselves reported the onset time of physical fatigue.
Statistical analyses run on the collected data revealed that the majority of participants experienced extreme physical fatigue after a two-minute CPR operation. Moreover, about 71.2% of the participants managed to provide compressions over five centimeters deep. Finally, the physical fatigue experienced by the participants was meaningfully correlated with the body weight, sex, university degree, and work place of the participants (p < 0.05). Since the findings of the present study showed that various factors including the sex, weight, height, university degree, and the work place of the rescuer were significantly correlated with the onset time of physical fatigue experienced during CPR operation, it is recommended that male nurses with greater height and weight be employed in the rescue teams in ICU wards. Moreover, it seems mandatory for the nurses currently working in such teams in hospitals to improve their physical fitness through doing aerobics on a regular basis so that they may experience less fatigue during their CPR operations in future.
Global Tungsten Demand and Supply Forecast
Authors: Dvořáček Jaroslav , Sousedíková Radmila , Vrátný Tomáš , Jureková Zdenka 
Published: March 2017

Abstract
An estimate of the world tungsten demand and supply until 2018 has been made. The figures were obtained by extrapolating from past trends of tungsten production from1905, and its demand from 1964. In addition, estimate suggestions of major production and investment companies were taken into account with regard to implementations of new projects for mining of tungsten or possible termination of its standing extraction. It can be assumed that tungsten supply will match demand by 2018. This suggestion is conditioned by successful implementation of new tungsten extraction projects, and full application of tungsten recycling methods.
Functional Dependence of Thermodynamic and Thermokinetic Parameters of Refrigerants Used in Mine Air Refrigerators. Part 1 – Refrigerant R407C
Authors: Nowak Bernard , Życzkowski Piotr , Łuczak Rafał 
Published: March 2017

Abstract
The authors of this article dealt with the issue of modeling the thermodynamic and thermokinetic properties (parameters) of refrigerants. The knowledge of these parameters is essential to design refrigeration equipment, to perform their energy efficiency analysis, or to compare the efficiency of air refrigerators using different refrigerants. One of the refrigerants used in mine air compression refrigerators is R407C. For this refrigerant, 23 dependencies were developed, determining its thermodynamic and thermokinetic parameters in the states of saturated liquid, dry saturated vapour, superheated vapor, subcooled liquid, and in the two-phase region. The created formulas have been presented in Tables 2, 5, 8, 10 and 12, respectively. It should be noted that the scope of application of these formulas is wider than the range of changes of that refrigerant during the normal operation of mine refrigeration equipment. The article ends with the statistical verification of the developed dependencies. For this purpose, for each model correlation coefficients and coefficients of determination were calculated, as well as absolute and relative deviations between the given values from the program REFPROP 7 (Lemmon et al., 2002) and the calculated ones. The results of these calculations have been contained in Tables 14 and 15.
Location of Opening-Out Cross-Cuts in Relation to Rockburst Hazard Conditions along the Face in the Light of Model Testing
Authors: Chlebowski Dariusz , Zorychta Andrzej , Burtan Zbigniew , Cała Marek 
Published: March 2017

Abstract
The paper outlines the main objectives of the method used for assessment of rockburst hazard during longwall mining operations taking into account factors expressing the confined work conditions. Relying on analytical approach, the conditions are examined that are likely to trigger the rockburst occurrence along the face, with regards to the location of cross-cuts and taking into account the presence of past excavation and geological disorders in the overlying strata. Simulation data apply to three cases of model loading, representing the impacts of residual pillars, gobs surrounded by undisturbed blocks of coal and the presence of faults, whilst the procedure involves five possible locations of opening-out cross-cuts in relation to characteristic points in the model. Results are examined basing on variability patterns of stress concentration and energy density distribution in the proximity of the workface in the course of progressing mining operations.
Histopathological Confirmation Etiopathology in the Carpal Tunnel Syndrome
Authors: Bordeianu I. , Baltatescu Gabriela Izabela , Iordache I.V. , Bratu I.C. , Caraban B.M. , Bosnac Nida , Ivanov B. , Podac C. 
Published: March 2017

AbstractThe authors present a retrospective clinical study on a total of 39 patients of both sexes aged between 38 and 76 years with idiopathic carpal tunnel compressive syndrome that surgically excised the anterior carpal ligament by a process custom classic which they examined histologically.Histopathological examination of objectified as a percentage of 71.79% previously carpal ligament structure is invaded by striated muscle fibers.Based on histopathological findings as the similarities between functional and embryological origin carpal ligament and anterior aponeurosis palm authors propose introducing embriogenetics etiopathology in compression carpal tunnel syndrome or inclusion in this category suffering from Dupuytren diathesis.
The Importance of Bronchoscopy in Early Lung Cancer (LC) Diagnosis
Authors: Tofolean Doina-Ecaterina , Fildan Ariadna-Peronela , Dantes Elena , Mazilu Laura , Dumitru E. , Tuta Liliana 
Published: March 2017

Abstract
Lung cancer is a leading cause of death worldwide, due to the fact that most patients are diagnosed in a fairly advanced stage. Screening tests such as sputum citology, chest x-rays or CT scans have their limitations and need further histological confirmation of the diagnosis.
Therefore, the need forfast and accurate detection and staging of lung cancer has determined the development of advanced medical procedures using bronchoscopic methods such as white light bronchoscopy, narrow-band imaging, auto-fluorescence bronchoscopy, confocal fluorescence microendoscopy or echoendoscopy.
Multifunctional graphene oxide for bioimaging: emphasis on biological research
Authors: Hwang Do Won , Hong Byung Hee , Lee Dong Soo 
Published: March 2017

AbstractGraphene oxide (GO) nanomaterials offer a wide range of bioimaging applicability. Almost complete quenching ability of fluorescence by GO and natural interaction of GO with single stranded nucleic acid made GO a useful and intriguing multifunctional nanoplatform both as a biosensor for in vitro microplate diagnostics and as a drug delivery carrier for targeted delivery. GO’s large surface area and strong near infrared absorbance contribute to enhancement of a therapeutic effect with abundant loading of drugs for possible photothermal and photodynamic therapy. Bioimaging capability of GO made it a good theranostic tool, while enabling tracing in vivo pharmacokinetics during concurrent treatment. Fluorescence, either signal on or off, Raman and surface-enhanced Raman scattering (SERs), photoacoustic, and radionuclide imaging modalities can be used for theranostic purposes using GO nanomaterials. In this review, we highlight current applications of GO for bioimaging that are classified into in vitro microplate, in vitro cellular and in vivo bioimaging.
Socio-spatial conflicts caused by an unfavourable rural structure and out-of-date Land and Property Register
Authors: Głowacka Agnieszka , Noszczyk Tomasz , Taszakowski Jarosław , Hernik Józef 
Published: March 2017

Abstract
This article addresses the issue of conflict situations caused by an out-of-date Land and Property Register (LPR) and the disadvantageous structure of rural areas in southern Poland. In this part of the country, holdings are very fragmented and scattered, made up of a large number of small surface area plots located far from the headquarters of the holding. The aim of the article is to present actions that can help improve rural spatial structure and validity of the land register. The authors have, therefore, analysed the problems that may result in both spatial and social conflicts. The following were analysed in particular: discrepancies between data in the LPR and the existing factual state, plots without access to public roads, property ownership structure, the necessity to regulate property boundaries, and problems with the procedure for taking land out of agricultural production. The article presents both positive and negative effects of the land consolidation and exchange process, modernisation of the Land and Property Register, and their impact on socio-spatial conflicts. Its results indicated that the land consolidation procedure and LPR modernisation have a significant impact on socio-spatial relations in rural areas. It has been found that despite the fact that both these activities may give rise to new disputes in addition to resolving conflicts, the overall balance is positive. It is because more positive aspects of these actions were found than negative consequences.
A Theorem at the Core of Colliding Bias
Authors: Shahar Doron J. , Shahar Eyal 
Published: March 2017

AbstractConditioning on a shared outcome of two variables can alter the association between these variables, possibly adding a bias component when estimating effects. In particular, if two causes are marginally independent, they might be dependent in strata of their common effect. Explanations of the phenomenon, however, do not explicitly state when dependence will be created and have been largely informal. We prove that two, marginally independent, causes will be dependent in a particular stratum of their shared outcome if and only if they modify each other’s effects, on a probability ratio scale, on that value of the outcome variable. Using our result, we also qualify the claim that such causes will “almost certainly” be dependent in at least one stratum of the outcome: dependence must be created in one stratum of a binary outcome, and independence can be maintained in every stratum of a trinary outcome.
Evaluating fetal head dimension changes during labor using open magnetic resonance imaging
Authors: Bamberg Christian , Deprest Jan , Sindhwani Nikhil , Teichgräberg Ulf , Güttler Felix , Dudenhausen Joachim W. , Kalache Karim D. , Henrich Wolfgang 
Published: March 2017

AbstractAim:Fetal skull molding is important for the adaptation of the head to the birth canal during vaginal delivery. Importantly, the fetal head must rotate around the maternal symphysis pubis. The goals of this analysis were to observe a human birth in real-time using an open magnetic resonance imaging (MRI) scanner and describe the fetal head configuration during expulsion.Methods:Real-time cinematic MRI series (TSE single-shot sequence, TR 1600 ms, TE 150 ms) were acquired from the midsagittal plane of the maternal pelvis during the active second stage of labor at 37 weeks of gestation. Frame-by-frame analyses were performed to measure the frontooccipital diameter (FOD) and distance from the vertex to the base of the fetal skull.Results:During vaginal delivery in an occiput anterior position, the initial FOD was 10.3 cm. When expulsion began, the fetal skull was deformed and elongated, with the FOD increasing to 10.8 cm and 11.2 cm at crowning. In contrast, the distance from the vertex to the base of the skull was reduced from 6.4 cm to 5.6 cm at expulsion.Conclusions:Fetal head molding is the change in the fetal head due to the forces of labor. The biomechanics of this process are poorly understood. Our visualization of the normal mechanism of late second-stage labor shows that MRI technology can for the first time help define the changes in the diameters of the fetal head during active labor.
Vibration Analysis of a Tire in Ground Contact under Varied Conditions
Authors: Karakus Murat , Cavus Aydin , Colakoglu Mehmet 
Published: March 2017

Abstract
The effect of three different factors, which are inflation pressure, vertical load and coefficient of friction on the natural frequencies of a tire (175/70 R13) has been studied. A three dimensional tire model is constructed, using four different material properties and parts in the tire. Mechanical properties of the composite parts are evaluated. After investigating the free vibration, contact analysis is carried out. A concrete block and the tire are modelled together, using three different coefficients of friction. Experiments are run under certain conditions to check the accuracy of the numerical model. The natural frequencies are measured to describe free vibration and vibration of the tire contacted by ground, using a damping monitoring method. It is seen, that experimental and numerical results are in good agreement. On the other hand, investigating the impact of three different factors together is quite difficult on the natural frequencies. When some of these factors are assumed to be constant and the variables are taken one by one, it is easier to assess the effects.
Spline Parameterization of Complex Planar Domains for Isogeometric Analysis
Authors: Gondegaon Sangamesh , Voruganti Hari K. 
Published: March 2017

Abstract
Isogeometric Analysis (IGA) involves unification of modelling and analysis by adopting the same basis functions (splines), for both. Hence, spline based parametric model is the starting step for IGA. Representing a complex domain, using parametric geometric model is a challenging task. Parameterization problem can be defined as, finding an optimal set of control points of a B-spline model for exact domain modelling. Also, the quality of parameterization, too has significant effect on IGA. Finding the B-spline control points for any given domain, which gives accurate results is still an open issue. In this paper, a new planar B-spline parameterization technique, based on domain mapping method is proposed. First step of the methodology is to map an input (non-convex) domain onto a unit circle (convex) with the use of harmonic functions. The unique properties of harmonic functions: global minima and mean value property, ensures the mapping is bi-jective and with no self-intersections. Next step is to map the unit circle to unit square to make it apt for B-spline modelling. Square domain is re-parameterized by using conventional centripetal method. Once the domain is properly parameterized, the required control points are computed by solving the B-spline tensor product equation. The proposed methodology is validated by applying the developed B-spline model for a static structural analysis of a plate, using isogeometric analysis. Different domains are modelled to show effectiveness of the given technique. It is observed that the proposed method is versatile and computationally efficient.
Computation and Monitoring of the Soil Moisture Index on Bulgarian Territory
Authors: Nitcheva Olga , Milev Borislav 
Published: March 2017

Abstract
The estimation and monitoring of the soil moisture index (SMI) on the Bulgarian territory is an important task from agricultural, fire and flood safety and water resources management aspects. It is not achievable by direct measurements as in the country there are only 20 field observation points. For the purpose adequate spatially distributed mathematical models must be employed. The paper demonstrates the implementation of the task by application of the Community Land Model (CLM) and all other procedures related to the preparation of GIS maps (Geographic Information Systems) for monitoring of monthly mean soil moisture index.
Assessment and modulation of cortical inhibition using transcranial magnetic stimulation
Authors: Vlachos Andreas , Funke Klaus , Ziemann Ulf 
Published: March 2017

Abstract:Transcranial magnetic stimulation (TMS) is a non-invasive brain stimulation technique, which is used for diagnostic, therapeutic and scientific purposes in the field of neurology and psychiatry. It is based on the physical principle of electromagnetic induction and allows for the local activation of cortical areas through the intact skull of conscious humans. When applied repeatedly (repetitive TMS; rTMS) sustained changes of cortical excitability can be observed. Hence, TMS resembles a promising approach for assessing and modulating neuronal networks in a non-invasive manner. However, despite its broad clinical application, the cellular and molecular mechanisms of rTMS-based therapies remain not well understood. Established therapeutic concepts assume that pathologically altered cortical excitability is normalised, which may involve ‘long-term potentiation’ or ‘long-term depression’ of excitatory synapses. Indeed, animal studies demonstrate that rTMS induces long-term changes of excitatory neurotransmission. However, it is unclear through which mechanisms synaptic changes, which are caused by external electromagnetic activation of the cortex and therefore are not specific for context or behaviour, could have a positive impact on complex brain function. More recent findings suggest that not only excitatory but also inhibitory neuronal networks are modulated by rTMS. It was shown for example that 10 Hz rTMS leads to a calcium-dependent long-term depression of inhibitory GABAergic synapses. Since the reduction of inhibitory neurotransmission (= disinhibition) is considered important for the expression of associative plasticity at excitatory synapses, it is conceivable that rTMS-induced disinhibition may promote context- and behaviour-specific synaptic changes. Hence, the model of
Mechanisms of Neurite Pruning
Authors: Rumpf Sebastian , Rode Sandra , Herzmann Svende , Krumkamp Rafael 
Published: March 2017

Abstract:The axons, dendrites and synapses of neurons are among the most intricate structures cells can build. Their morphogenesis involves growth mechanisms, but also regressive mechanisms like retraction or degeneration of supernumerary or non-specific processes. Regressive mechanisms are collectively known as pruning. Pruning can serve the specification of neuronal circuits or the removal of developmentally intermediate structures. Pruning can affect both single synapses or long stretches of neurite. Here, we introduce well-characterized models of developmental pruning in mammals and
Factors of a Successfully Implemented Compulsory Settlement
Authors: Bukovšek Marjeta Zorin , Bratina Borut , Tominc Polona 
Published: March 2017

Abstract
In Slovenia, many companies try to avoid bankruptcy with the introduction of a compulsory settlement procedure, but only a handful of companies successfully complete the compulsory settlement in the sense of a final repayment of creditors in accordance with the adopted financial restructuring plan. The article identified the factors affecting the confirmation of a compulsory settlement as well as the factors affecting the final repayment of creditors and, thus, permanently eliminated the causes of insolvency. The factors were divided into internal and external, whereby the impact of factors on a successfully completed compulsory settlement was verified using quantitative and qualitative research methods.
Mobile Learning Usage and Preferences of Vocational Secondary School Students: The cases of Austria, the Czech Republic, and Germany
Authors: Biloš Antun , Turkalj Davorin , Kelić Ivan 
Published: March 2017

Abstract
The purpose of this paper is to determine the current status of mobile device usage and mobile learning adoption in vocational education and training (VET) secondary schools in three European Union countries (Austria, the Czech Republic, and Germany). The research focused on exploring students’ mobile device usage habits, their attitudes toward education in the context of mobile application support, and preferences regarding mobile learning features. The research confirmed a high level of mobile device usage among secondary school students on a daily basis; smartphones and laptops were the most commonly used devices. The vast majority of participants perceived themselves to be advanced mobile device users, but reported a deficit of ICT-assisted mobile learning experience. However, the majority of respondents with prior ICT-assisted education experience described it as a positive or very positive experience. In addition, study participants tended to agree that mobile learning will play a significant role in education in the future. The paper also explored the reported differences among the students in the three countries and suggested several implications for understanding students’ views of mobile learning. The findings provide insights into possibilities of m-learning implementation while creating a framework for m-learning application development in the VET secondary school environment.
Conus medullaris dermoid tumour. Uncommon presentation of conus medullaris dermoid as an exophytic mass lesion
Authors: Satyarthee Guru Dutta , Kumar Ashwini , Moscote-Salazar Luis Rafael 
Published: March 2017

Abstract
Authors report an extremely uncommon case dorsally exophytic conus dermoid in a three-years old boy, who underwent meningocele repair locate at lumbosacral region at an age of one month. The boy presented with low backache and difficulty in passing urine. Magnetic resonance imaging evaluation of spine revealed presence of a large exophytic mass located dorsally in the conus and the features suggestive of dermoid. He underwent surgical intervention during surgery lesion was dorsally exophytic containing cheesy material with hairs, excision of dermoid along capsule was carried our successfully. Pertinent literature and management of exophytic conus dermoid is discussed briefly.
Sturge Weber Syndrome: review of literature with case illustration
Authors: Satyarthee Guru Dutta , Prabhu Manik , Moscote-Salazar Luis Rafael 
Published: March 2017

AbstractSturge-Weber syndrome (SWS) also called as encephalotrigeminal angiomatosis, is a sporadically occurring rare neuro-cutaneous syndrome, characterized by vascular malformation with capillary venous angiomas involving face, choroidal layer of eye globe and leptomeninges responsible for ophthamological as well as neurological signs and symptoms. Authors report an interesting case, a six year old girl, who presented with seizures, facial port wine stain and normal psychomotor development. CT scan showed left cerebral hemiatrophy, left frontal and parieto occipital calcification with cortical calcification in left high frontal convexity. Cranial MRI scan also confirmed finding of left cerebral hemiatrophy and also revealed presence of gyriform cortical calcification, prominent flow voids seen in left basal ganglia. Her seizure is well controlled with antiepileptic medication. The pertinent literature is reviewed and management of such cases is discussed briefly.